阅读说明：本技术 一种窗帘伸缩导轨 (Curtain telescopic guide rail ) 是由 谭锦斌 李裕生 于 2021-07-21 设计创作，主要内容包括：本发明提供一种窗帘伸缩导轨。其包括内导轨、外导轨、第一转动轮、第二转动轮、传送带和窗帘导轨滑车；内导轨一端嵌套安装在外导轨内,内导轨和外导轨可相对伸缩滑动；第一转动轮和第二转动轮分别安装在窗帘伸缩导轨的两端；传送带为环形且套设在第一转动轮和第二转动轮外侧；传送带连接在第一转动轮和第二转动轮之间,使第一转动轮和第二转动轮传动连接,传送带位于外导轨和内导轨内,窗帘导轨滑车与传动带连接,且伸出外导轨和内导轨外,导轨滑车可在传送带的带动下沿外导轨和内导轨的轴向移动。导轨滑车上的穿线通孔方便调节窗帘导轨内皮带或者绳索长度；多组滑轮的设置能让滑车横向、纵向顺滑运行；导轨固定装置可方便调节伸缩杆导轨长度。(The invention provides a curtain telescopic guide rail. The curtain rail pulley comprises an inner guide rail, an outer guide rail, a first rotating wheel, a second rotating wheel, a conveyor belt and a curtain rail pulley; one end of the inner guide rail is nested in the outer guide rail, and the inner guide rail and the outer guide rail can relatively slide in a telescopic way; the first rotating wheel and the second rotating wheel are respectively arranged at two ends of the curtain telescopic guide rail; the conveying belt is annular and is sleeved outside the first rotating wheel and the second rotating wheel; the conveyor belt is connected between the first rotating wheel and the second rotating wheel, so that the first rotating wheel is in transmission connection with the second rotating wheel, the conveyor belt is positioned in the outer guide rail and the inner guide rail, the curtain guide rail pulley is connected with the conveyor belt and extends out of the outer guide rail and the inner guide rail, and the guide rail pulley can move along the axial direction of the outer guide rail and the axial direction of the inner guide rail under the driving of the conveyor belt. The threading through hole on the guide rail pulley is convenient for adjusting the length of a belt or a rope in the curtain guide rail; the arrangement of the plurality of groups of pulleys can ensure that the pulley can transversely and longitudinally smoothly run; the guide rail fixing device can conveniently adjust the length of the telescopic rod guide rail.)

1. A curtain telescopic guide rail is characterized by comprising an inner guide rail, an outer guide rail, a first rotating wheel, a second rotating wheel, a conveyor belt and a curtain guide rail pulley; one end of the inner guide rail is nested and installed in the outer guide rail, and the inner guide rail and the outer guide rail can relatively slide in a telescopic way; the first rotating wheel and the second rotating wheel are respectively arranged at two ends of the curtain telescopic guide rail; the conveying belt is annular and is sleeved outside the first rotating wheel and the second rotating wheel; the conveyer belt is connected first rotation wheel with the second rotates between the wheel, makes first rotation wheel with the second rotates a round transmission and connects, the conveyer belt is located in outer guide rail and the inner rail, the curtain guide rail coaster with the drive belt is connected, and stretches out outside outer guide rail and the inner rail, the curtain guide rail coaster can follow under the drive of conveyer belt the axial displacement of outer guide rail and inner rail.

2. The telescopic curtain rail of claim 1, further comprising a curtain rail fixing device, wherein the curtain rail fixing device comprises a guide sleeve, and the guide sleeve is a hollow tube with two open ends; the utility model discloses a curtain guide rail pulley, including the uide bushing, the uide bushing cover is in outside outer guide rail and the inner rail junction, the link of outer guide rail certainly the second end of uide bushing inserts in the uide bushing, with the uide bushing cooperates, the free end of outer guide rail stretches out outside the uide bushing, the inner rail certainly the first end of uide bushing inserts in the uide bushing, with the uide bushing cooperates, the link of inner rail inserts in the outer guide rail, the free end of inner rail stretches out outside the uide bushing, the curtain guide rail coaster is in the outer guide rail with can pass when moving between the inner rail the uide bushing.

3. The window covering telescopic rail as claimed in claim 2, wherein the bottom surface of the guide sleeve is formed with a first support surface and a second support surface, the first support surface extending from the first end of the guide sleeve axially inwardly of the guide sleeve, the second support surface extending from the second end of the guide sleeve axially inwardly of the guide sleeve, the first support surface and the second support surface being connected, the first support surface being higher than the second support surface, and a step being formed at a junction of the first support surface and the second support surface; the first supporting surface supports the inner guide rail, the second supporting surface supports the outer guide rail, the outer guide rail is abutted to the step, and the height difference between the bottom surfaces of the outer guide rail and the inner guide rail is matched with the height difference between the second supporting surface and the first supporting surface.

4. The telescopic guide rail of curtain as claimed in claim 3, wherein the bottom surface of the guide sleeve is provided with a through slot penetrating through the first support surface and the second support surface, the bottom of the inner guide rail is provided with a first sliding opening along the axial direction, the bottom of the outer guide rail is provided with a second sliding opening along the axial direction, and the first sliding opening is communicated with the second sliding opening; and two ends of the through groove are respectively communicated with the first sliding opening and the second sliding opening.

5. The telescopic curtain rail of claim 4, wherein the through groove comprises a first through section and a second through section, the first through section and the second through section are communicated, and the positions of the first through section and the second through section correspond to the positions of the first supporting surface and the second supporting surface respectively; the width of the first through section close to the first end of the guide sleeve is larger than that of the first sliding opening, and the width of the first through section close to the second through section is adaptive to that of the first sliding opening; the width of the second through section is adapted to the width of the second sliding opening.

6. A window covering telescopic rail as claimed in claim 3, wherein the window covering rail trolley is rotatably mounted with a plurality of second pulleys, and the guide sleeve further comprises a transition table upwardly raised with respect to the first sliding support surface and extending axially outwardly from the junction of the first and second sliding support surfaces along the guide sleeve; a second sliding support surface is arranged on the inner surface of the bottom of the outer guide rail, extends axially from the connecting end of the outer guide rail along the other end of the outer guide rail and is higher than the inner surface of the bottom of the outer guide rail; when the outer guide rail is matched with the guide sleeve, the transition table is in butt joint matching with the second sliding support surface in the axial direction of the guide sleeve, the height of the second sliding support surface is higher than that of the transition table, and the second pulley can slide upwards from the transition table onto the second sliding support surface or downwards from the second sliding support surface onto the transition table.

7. The telescopic guide rail for curtain as claimed in claim 2, wherein the guide sleeve is formed at an upper portion thereof with a first guide rail and a second guide rail, the first guide rail and the second guide rail are respectively located above the first support surface and the second support surface and extend along the axial direction of the guide sleeve, the first guide rail and the second guide rail are connected and a step is also provided at the connection of the first guide rail and the second guide rail; the first guide rail is matched with the top end of the inner guide rail, so that two sides of the inner guide rail are fixed relative to the guide sleeve, and the second guide rail is matched with the top end of the outer guide rail, so that two sides of the outer guide rail are fixed relative to the guide sleeve.

8. The telescopic curtain rail as claimed in claim 2, wherein the outer surface of the bottom surface of the guide sleeve is provided with a transition surface, the transition surface is positioned at the back of the first supporting surface, one end of the transition surface, which is close to the joint of the first supporting surface and the second supporting surface, is matched with the outer rail, and the other end of the transition surface is matched with the inner rail; the height difference between one end of the transition surface matched with the outer guide rail and the other end of the transition surface is matched with the height difference between the inner guide rail and the outer guide rail.

9. The window covering telescopic rail of claim 2, wherein the window covering rail fixing device further comprises a fixing component, wherein the fixing component penetrates through the outer shell of the guide sleeve from the outside of the guide sleeve and partially extends into the guide sleeve; the fixing assembly is connected with the inner guide rail and/or the outer guide rail and fixes the inner guide rail and/or the outer guide rail relative to the guide sleeve.

10. The telescopic curtain rail of claim 9, wherein the fixing component is a fixing bolt, the guide sleeve is further provided with a fixing bolt hole matched with the fixing bolt, the fixing bolt hole penetrates through the guide sleeve, and the fixing bolt can extend into the guide sleeve through the fixing bolt hole to fix the inner rail; or

The fixing assembly comprises a fixing bolt and a fixing plate, the fixing plate is arranged in the guide sleeve, the guide sleeve and the fixing plate are both provided with fixing bolt holes matched with the fixing bolt, and the fixing plate moves inwards to press and fix the inner guide rail or moves outwards to clamp and fix the inner guide rail between the fixing plate and the guide sleeve under the rotating matching of the fixing bolt and the fixing bolt holes.

11. The window curtain telescopic guide rail of claim 1, wherein the window curtain guide rail pulley comprises a pulley main body, a plurality of first pulleys and a plurality of second pulleys, the plurality of first pulleys and the plurality of second pulleys are rotatably connected to the pulley main body, the pulley main body comprises an upper pulley main body and a lower pulley main body connected to the upper pulley main body, the first pulleys and the second pulleys are arranged on two sides of the upper pulley main body, the bottoms of the plurality of first pulleys form a first sliding support surface, the bottoms of the plurality of second pulleys form a second sliding support surface, and the second sliding support surface is higher than the first sliding support surface; be provided with first slip holding surface in the inner rail, be provided with the second slip holding surface in the outer rail, the (window) curtain guide rail coaster is in when the inner rail slides, one of them of first pulley and second pulley supports on the first slip holding surface, the (window) curtain guide rail coaster is in when the outer rail slides, one of them of first pulley and second pulley supports on the second slip holding surface, the difference in height between first slip holding surface and the second slip holding surface with the difference in height of second slip holding surface and first slip holding surface suits.

12. The window covering telescopic rail of claim 11, wherein the first pulley and the corresponding second pulley are coaxial or have rotation axes parallel to each other, and the first pulley and the second pulley are disposed to be offset in an axial direction of the first pulley and the second pulley, and accordingly, the first sliding support surface and the second sliding support surface are disposed to be offset in an axial direction of the first pulley and the second pulley.

13. The window covering telescopic rail of claim 11, wherein the window covering rail block further comprises a first guide wheel rotatably coupled to the upper block body, the first guide wheel transversely penetrating the upper block body and having a wheel of the first guide wheel projecting outwardly in a transverse direction with respect to a side surface of the upper block body, the first guide wheel rotating in the transverse direction, the first guide wheel being higher than the second sliding support surface;

the curtain guide rail pulley also comprises a second guide wheel which is arranged at the top end of the upper pulley main body and can rotate in the transverse direction, and the wheel edge of the second guide wheel protrudes outwards relative to the side surface of the upper pulley main body in the transverse direction;

the second guide wheel is higher than the first guide wheel, and the radius of the second guide wheel is different from that of the first guide wheel;

the utility model discloses a curtain guide rail pulley, including interior guide rail, first leading wheel and second leading wheel, be provided with first guide way in the interior guide rail, be provided with the second guide way in the outer guide rail, the curtain guide rail coaster is in when the interior guide rail slides, one of them of first leading wheel and second leading wheel is located in the first guide way and with first guide way cooperatees, the curtain guide rail coaster is in when the outer guide rail slides, one of them another of first leading wheel and second leading wheel is located in the second guide way and with the second guide way cooperatees, first guide way and second guide way width are different, just width difference between first guide way and the second guide way with the diameter difference of first leading wheel and second leading wheel suits.

14. The telescopic curtain rail of claim 1, wherein the curtain rail block comprises a block main body and a plurality of pulleys, the block main body comprises an upper block main body and a lower block main body connected with the upper block main body, the upper block main body is rotatably provided with the plurality of pulleys, the upper block main body is provided with a first threading through hole, and the lower block main body is provided with a second threading through hole; the conveying belt comprises a first conveying belt and a second conveying belt, the second conveying belt is meshed with the second rotating wheel, the first conveying belt is a rope, the first conveying belt and the second conveying belt are connected in an annular shape and sleeved on the first rotating wheel and the second rotating wheel, and the first rotating wheel and the second rotating wheel are in transmission fit; the curtain guide rail tackle is connected with the first conveying belt, the first conveying belt is driven to move on the outer guide rail and/or the inner guide rail, an upper sliding vehicle body of the curtain guide rail tackle can slide in the outer guide rail and/or the inner guide rail, a lower sliding vehicle body of the curtain guide rail tackle is positioned outside the outer guide rail and the inner guide rail, and the first conveying belt sequentially penetrates through the first threading through hole and the second threading through hole and is fixed on the curtain guide rail tackle.

15. The window covering telescopic rail of claim 14, wherein the first belt includes a first rope section and a second rope section, the first rope section and the second rope section are separated, a first end of the first rope section is connected to a first end of the second belt, a second end of the first rope section passes through the first threading through hole and the second threading through hole and is fixed to the window covering rail block, a first end of the second rope section is connected to a second end of the second belt, and a second end of the second rope section passes through the first threading through hole and the second threading through hole and is fixed to the window covering rail block.

16. The window covering telescopic rail of claim 15, wherein the window covering rail block further comprises a threading fixing device, the threading fixing device is provided on the lower block body and located at one side of the second threading through hole or the threading fixing device is provided in the second threading through hole, and the threading fixing device fixes the second end of the first rope segment and the second end of the second rope segment on the window covering rail block.

17. The telescopic curtain rail of claim 16, wherein the second threading through hole is a threading bolt hole vertically disposed on the lower pulley body, and the second threading through hole comprises a second through hole upper opening and a second through hole lower opening, and the second through hole lower opening is disposed at the bottom of the lower pulley body; the threading fixing device comprises a threading bolt and a threading nut, the threading bolt can be matched with the second threading through hole, and the threading nut can be matched with an upper opening of the second through hole; the second end of the first rope section and the second end of the second rope section are fixed on the curtain guide rail pulley through the matching of the threading bolt and the threading nut.

18. The window curtain telescopic rail as claimed in claim 14, wherein a portion of the first conveyor belt is disposed on both sides of the carriage body of the window curtain rail carriage.

19. The telescopic curtain rail as claimed in claim 14, wherein the pulley body of the pulley for curtain rail further has a third through hole, the third through hole transversely penetrates through the pulley body of the pulley for curtain rail, and the first belt sequentially passes through the first through hole, the third through hole and the second through hole.

20. The window covering telescopic rail of claim 14, wherein the first threading through-hole includes a first end opening and a second end opening communicating with the first end opening, the first end opening is formed on one side surface of the upper pulley body, and the second end opening is formed on the other side surface of the upper pulley body; the first end opening is higher than the pulley on the same side and the outward protruding part of the pulley on the same side on one side of the upper pulley body, and the second end opening is lower than the pulley on the same side and the outward protruding part of the pulley on the same side on the other side of the upper pulley body; the parts of the conveyor belt between the first end opening to the first rotating wheel and the first end opening to the second rotating wheel are higher than the pulleys on the same side and the outward protruding parts of the pulleys on the same side.

21. The telescopic window curtain rail as claimed in claim 20, wherein the first threading through-hole is an arc-shaped through-hole that transversely penetrates through the pulley body, and the first end opening and the second end opening are arranged on two sides of the pulley body in a staggered manner.

Technical Field

The invention belongs to the technical field of curtains, and particularly relates to a curtain telescopic guide rail.

Background

Most curtain guide rails in the market at present need to be manufactured by measuring the size firstly and then manufactured according to the size or needs to be modified by professional personnel during specific application, the customized production period is long, inconvenience is caused to the installation of the curtain rod, and waste in the cutting of the curtain rod is easily caused; once the length of the curtain guide rail is determined, the curtain guide rail can only be used on a corresponding window, and once the size of the window is changed due to decoration and the like, the curtain guide rail with the original size cannot be used continuously or adjusted, so that waste is generated. The problem can be well solved by adopting the curtain telescopic rod guide rail. However, the problem of how to fix the telescopic rod guide rail needs to be solved by adopting the telescopic rod guide rail; when the fixing function is realized, the length of the telescopic rod guide rail is inconvenient to adjust; when the telescopic rod guide rail is matched with other transmission parts for use, the inner rail, the outer rail and a fixing device between the inner rail and the outer rail are difficult to realize the problems of smooth transition and the like. Moreover, when the guide rail passes through the interior guide rail and when outer guide rail realization is scalable, there is the difference in height in interior guide rail and outer guide rail itself to inner structure is more complicated after the cooperation, and four wheel structures on ordinary coaster coplanar are difficult to be installed and will be steadily passed through and horizontal longitudinal and smooth operation at two guide rails, easily cause the (window) curtain guide rail to damage for a long time, and especially the electronic (window) curtain guide rail is changeed and is caused the damage. In addition, the existing curtain is generally a motorized curtain, and the curtain can be opened and closed in a time-saving and labor-saving manner through the pulley. Therefore, the curtain with the telescopic guide rail, the pulley mechanism, the electric mechanism and the like generally has the parts of the rope and the synchronous belt to realize the functions of stretching, opening and closing the curtain in a time-saving and labor-saving manner, but the length of the transmission mechanisms of the rope and the synchronous belt in the curtain guide rail is difficult to adjust, if the adjusting mechanism is additionally arranged, the structural complexity of the curtain guide rail is increased, and the size of the curtain guide rail is increased, so that the curtain guide rail is not favorable for practical application and product attractiveness.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a curtain telescopic guide rail.

The embodiment provided by the invention provides a curtain telescopic guide rail, which comprises an inner guide rail, an outer guide rail, a first rotating wheel, a second rotating wheel, a conveyor belt and a curtain guide rail pulley, wherein the inner guide rail is fixed on the outer guide rail; one end of the inner guide rail is nested and installed in the outer guide rail, and the inner guide rail and the outer guide rail can relatively slide in a telescopic way; the first rotating wheel and the second rotating wheel are respectively arranged at two ends of the curtain telescopic guide rail; the conveying belt is annular and is sleeved outside the first rotating wheel and the second rotating wheel; the conveyer belt is connected first rotation wheel with the second rotates between the wheel, makes first rotation wheel with the second rotates a round transmission and connects, the conveyer belt is located in outer guide rail and the inner rail, the curtain guide rail coaster with the drive belt is connected, and stretches out outside outer guide rail and the inner rail, the curtain guide rail coaster can follow under the drive of conveyer belt the axial displacement of outer guide rail and inner rail.

Preferably, the curtain telescopic guide rail further comprises a curtain guide rail fixing device, the curtain guide rail fixing device comprises a guide sleeve, and the guide sleeve is in a hollow tubular shape with two open ends; the utility model discloses a curtain guide rail pulley, including the uide bushing, the uide bushing cover is in outside outer guide rail and the inner rail junction, the link of outer guide rail certainly the second end of uide bushing inserts in the uide bushing, with the uide bushing cooperates, the free end of outer guide rail stretches out outside the uide bushing, the inner rail certainly the first end of uide bushing inserts in the uide bushing, with the uide bushing cooperates, the link of inner rail inserts in the outer guide rail, the free end of inner rail stretches out outside the uide bushing, the curtain guide rail coaster is in the outer guide rail with can pass when moving between the inner rail the uide bushing.

Preferably, the bottom surface of the guide sleeve is formed with a first supporting surface and a second supporting surface, the first supporting surface extends from the first end of the guide sleeve along the axial direction of the guide sleeve inwards, the second supporting surface extends from the second end of the guide sleeve along the axial direction of the guide sleeve inwards, the first supporting surface and the second supporting surface are connected, the first supporting surface is higher than the second supporting surface, and a step is formed at the joint of the first supporting surface and the second supporting surface; the first supporting surface supports the inner guide rail, the second supporting surface supports the outer guide rail, the outer guide rail is abutted to the step, and the height difference between the bottom surfaces of the outer guide rail and the inner guide rail is matched with the height difference between the second supporting surface and the first supporting surface.

Preferably, a through groove penetrating through the first supporting surface and the second supporting surface is formed in the bottom surface of the guide sleeve, a first sliding opening is formed in the bottom of the inner guide rail along the axial direction, a second sliding opening is formed in the bottom of the outer guide rail along the axial direction, and the first sliding opening is communicated with the second sliding opening; and two ends of the through groove are respectively communicated with the first sliding opening and the second sliding opening.

Preferably, the through groove comprises a first through section and a second through section, the first through section is communicated with the second through section, and the positions of the first through section and the second through section correspond to the positions of the first supporting surface and the second supporting surface respectively; the width of the first through section close to the first end of the guide sleeve is larger than that of the first sliding opening, and the width of the first through section close to the second through section is adaptive to that of the first sliding opening; the width of the second through section is adapted to the width of the second sliding opening.

Preferably, the curtain rail block is rotatably mounted with a plurality of second pulleys, and the guide sleeve further comprises a transition table protruding upward relative to the first sliding support surface and extending axially outward from the junction of the first sliding support surface and the second sliding support surface along the guide sleeve; a second sliding support surface is arranged on the inner surface of the bottom of the outer guide rail, extends axially from the connecting end of the outer guide rail along the other end of the outer guide rail and is higher than the inner surface of the bottom of the outer guide rail; when the outer guide rail is matched with the guide sleeve, the transition table is in butt joint matching with the second sliding support surface in the axial direction of the guide sleeve, the height of the second sliding support surface is higher than that of the transition table, and the second pulley can slide upwards from the transition table onto the second sliding support surface or downwards from the second sliding support surface onto the transition table.

Preferably, a first guide rail and a second guide rail are formed at the upper part of the guide sleeve, the first guide rail and the second guide rail are respectively positioned above the first supporting surface and the second supporting surface and extend along the axial direction of the guide sleeve, the first guide rail and the second guide rail are connected, and a step is also arranged at the joint of the first guide rail and the second guide rail; the first guide rail is matched with the top end of the inner guide rail, so that two sides of the inner guide rail are fixed relative to the guide sleeve, and the second guide rail is matched with the top end of the outer guide rail, so that two sides of the outer guide rail are fixed relative to the guide sleeve.

Preferably, the outer surface of the bottom surface of the guide sleeve is provided with a transition surface, the transition surface is positioned on the back surface of the first supporting surface, one end of the transition surface, which is close to the joint of the first supporting surface and the second supporting surface, is matched with the outer guide rail, and the other end of the transition surface is matched with the inner guide rail; the height difference between one end of the transition surface matched with the outer guide rail and the other end of the transition surface is matched with the height difference between the inner guide rail and the outer guide rail.

Preferably, the curtain guide rail fixing device further comprises a fixing component, the fixing component penetrates through the shell of the guide sleeve from the outside of the guide sleeve, and partially extends into the guide sleeve; the fixing assembly is connected with the inner guide rail and/or the outer guide rail and fixes the inner guide rail and/or the outer guide rail relative to the guide sleeve.

Preferably, the fixing assembly is a fixing bolt, the guide sleeve is further provided with a fixing bolt hole matched with the fixing bolt, the fixing bolt hole penetrates through the guide sleeve, and the fixing bolt can extend into the guide sleeve through the fixing bolt hole to fix the inner guide rail; or

The fixing assembly comprises a fixing bolt and a fixing plate, the fixing plate is arranged in the guide sleeve, the guide sleeve and the fixing plate are both provided with fixing bolt holes matched with the fixing bolt, and the fixing plate moves inwards to press and fix the inner guide rail or moves outwards to clamp and fix the inner guide rail between the fixing plate and the guide sleeve under the rotating matching of the fixing bolt and the fixing bolt holes.

Preferably, the curtain rail pulley comprises a pulley main body, a plurality of first pulleys and a plurality of second pulleys, the plurality of first pulleys and the plurality of second pulleys are rotatably connected to the pulley main body, the pulley main body comprises an upper pulley main body and a lower pulley main body connected with the upper pulley main body, the first pulleys and the second pulleys are arranged on two sides of the upper pulley main body, the bottoms of the plurality of first pulleys form a first sliding support surface, the bottoms of the plurality of second pulleys form a second sliding support surface, and the second sliding support surface is higher than the first sliding support surface; be provided with first slip holding surface in the inner rail, be provided with the second slip holding surface in the outer rail, the (window) curtain guide rail coaster is in when the inner rail slides, one of them of first pulley and second pulley supports on the first slip holding surface, the (window) curtain guide rail coaster is in when the outer rail slides, one of them of first pulley and second pulley supports on the second slip holding surface, the difference in height between first slip holding surface and the second slip holding surface with the difference in height of second slip holding surface and first slip holding surface suits.

Preferably, the first pulley and the corresponding second pulley are coaxial or have rotation axes parallel to each other, and the first pulley and the second pulley are arranged in a staggered manner in the axial direction of the first pulley and the second pulley, and correspondingly, the first sliding support surface and the second sliding support surface are arranged in a staggered manner in the axial direction of the first pulley and the second pulley.

Preferably, the curtain rail block further comprises a first guide wheel rotatably connected to the upper block main body, the first guide wheel transversely penetrates through the upper block main body and projects outwards relative to the side surface of the upper block main body along the wheel of the first guide wheel in the transverse direction, the first guide wheel rotates in the transverse direction, and the first guide wheel is higher than the second sliding support surface;

the curtain guide rail pulley also comprises a second guide wheel which is arranged at the top end of the upper pulley main body and can rotate in the transverse direction, and the wheel edge of the second guide wheel protrudes outwards relative to the side surface of the upper pulley main body in the transverse direction;

the second guide wheel is higher than the first guide wheel, and the radius of the second guide wheel is different from that of the first guide wheel;

the utility model discloses a curtain guide rail pulley, including interior guide rail, first leading wheel and second leading wheel, be provided with first guide way in the interior guide rail, be provided with the second guide way in the outer guide rail, the curtain guide rail coaster is in when the interior guide rail slides, one of them of first leading wheel and second leading wheel is located in the first guide way and with first guide way cooperatees, the curtain guide rail coaster is in when the outer guide rail slides, one of them another of first leading wheel and second leading wheel is located in the second guide way and with the second guide way cooperatees, first guide way and second guide way width are different, just width difference between first guide way and the second guide way with the diameter difference of first leading wheel and second leading wheel suits.

Preferably, the curtain guide rail pulley comprises a pulley main body and a plurality of pulleys, the pulley main body comprises an upper pulley main body and a lower pulley main body connected with the upper pulley main body, the plurality of pulleys are rotatably mounted on the upper pulley main body, a first threading through hole is formed in the upper pulley main body, and a second threading through hole is formed in the lower pulley main body; the conveying belt comprises a first conveying belt and a second conveying belt, the second conveying belt is meshed with the second rotating wheel, the first conveying belt is a rope, the first conveying belt and the second conveying belt are connected in an annular shape and sleeved on the first rotating wheel and the second rotating wheel, and the first rotating wheel and the second rotating wheel are in transmission fit; the curtain guide rail tackle is connected with the first conveying belt, the first conveying belt is driven to move on the outer guide rail and/or the inner guide rail, an upper sliding vehicle body of the curtain guide rail tackle can slide in the outer guide rail and/or the inner guide rail, a lower sliding vehicle body of the curtain guide rail tackle is positioned outside the outer guide rail and the inner guide rail, and the first conveying belt sequentially penetrates through the first threading through hole and the second threading through hole and is fixed on the curtain guide rail tackle.

Preferably, the first transmission belt comprises a first rope section and a second rope section, the first rope section and the second rope section are separated, the first end of the first rope section is connected with the first end of the second transmission belt, the second end of the first rope section penetrates through the first threading through hole and the second threading through hole and is fixed on the curtain guide rail pulley, the first end of the second rope section is connected with the second end of the second transmission belt, and the second end of the second rope section penetrates through the first threading through hole and the second threading through hole and is fixed on the curtain guide rail pulley.

Preferably, the curtain rail block further comprises a threading fixing device, the threading fixing device is arranged on the lower block main body and located on one side of the second threading through hole or arranged in the second threading through hole, and the threading fixing device fixes the second end of the first rope section and the second end of the second rope section on the curtain rail block.

Preferably, the second threading through hole is formed in the lower pulley main body in a manner that a threading bolt hole is arranged in the vertical direction, the second threading through hole comprises a second through hole upper opening and a second through hole lower opening, and the second through hole lower opening is formed in the bottom of the lower pulley main body; the threading fixing device comprises a threading bolt and a threading nut, the threading bolt can be matched with the second threading through hole, and the threading nut can be matched with an upper opening of the second through hole; the second end of the first rope section and the second end of the second rope section are fixed on the curtain guide rail pulley through the matching of the threading bolt and the threading nut.

Preferably, two sides of the pulley body of the curtain guide rail pulley are respectively provided with a part of the first conveyor belt.

Preferably, a third threading through hole is further formed in the pulley main body of the curtain guide pulley, the third threading through hole transversely penetrates through the pulley main body of the curtain guide pulley, and the first conveyor belt sequentially penetrates through the first threading through hole, the third threading through hole and the second threading through hole.

Preferably, the first threading through hole comprises a first end opening and a second end opening communicated with the first end opening, the first end opening is arranged on one side surface of the upper pulley body, and the second end opening is arranged on the other side surface of the upper pulley body; the first end opening is higher than the pulley on the same side and the outward protruding part of the pulley on the same side on one side of the upper pulley body, and the second end opening is lower than the pulley on the same side and the outward protruding part of the pulley on the same side on the other side of the upper pulley body; the parts of the conveyor belt between the first end opening to the first rotating wheel and the first end opening to the second rotating wheel are higher than the pulleys on the same side and the outward protruding parts of the pulleys on the same side.

Preferably, the first threading through hole transversely penetrates through the pulley main body for an arc-shaped through hole, and the first end opening and the second end opening are arranged on two sides of the pulley main body in a staggered mode.

The curtain telescopic guide rail provided by the invention is provided with the curtain guide rail pulley, the threading through hole on the curtain guide rail pulley is matched with the curtain guide rail to realize the extension and retraction of the guide rail, so that the size of the guide rail is prevented from being increased, and further, the pulley through hole extends out of the guide rail and is opened and closed by arranging a fixed structure to conveniently adjust the length of a belt or a rope in the curtain guide rail; the arrangement of the plurality of groups of pulleys on the curtain guide rail pulley can still enable the curtain pulley to keep horizontal and longitudinal smooth running under the condition that the curtain guide rail with uneven height is in stable transition and the internal structure is more complex after the curtain guide rail is matched; the curtain guide rail fixing device can conveniently adjust the length of the telescopic rod guide rail, and the fixing device and the first slide rail are matched to limit inward contraction and telecontrol of the two telescopic rod guide rails.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a front view of an angled curtain rail mounting assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a bottom view of a curtain guide fixing device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a bottom view of an angled curtain rail fastening device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of a curtain rail;

FIG. 6 is a sectional view taken along line A-A;

FIG. 7 is a schematic view of the structure of the inner and outer guide rails in cooperation with the curtain rail fixing device;

FIG. 8 is a schematic view of the structure of the outer rail cooperating with the curtain rail fixing device;

FIG. 9 is a schematic view of the inside structure of the curtain telescopic rail;

FIG. 10 is a schematic view of the curtain rail trolley and the mounting assembly;

FIG. 11 is a schematic top view of a curtain rail block;

FIG. 12 is a front view of a curtain pulley according to an embodiment of the present invention;

FIG. 13 is a schematic view of the curtain carrier in an assembled configuration with the inner and outer tracks;

FIG. 14 is a schematic view of the curtain carrier in position within the inner track;

fig. 15 is a schematic view of the curtain carrier in the outer rail.

In the figure: the curtain guide rail fixing device comprises a curtain guide rail fixing device 1, an inner guide rail 2, an outer guide rail 3, a curtain guide rail pulley 4, a conveyor belt 5, a first rotating wheel 6 and a second rotating wheel;

the guide sleeve 101, the first supporting surface 102, the second supporting surface 103, the first guide rail 104, the second guide rail 105, the first matching surface 106, the second matching surface 107, the through groove 108, the first through section 109, the second through section 110, the transition surface 111, the transition table 112, the fixing assembly 113, the fixing bolt 114, the fixing bolt hole 115, the T-shaped nut 116 and the limiting part 117117;

a first sliding opening 201, a first sliding support surface 202, a first guide groove 203, a second guide groove 204, a second sliding opening 301, a second sliding support surface 302;

the threading device comprises a pulley body 401, a first pulley 402, a second pulley 403, a first guide wheel 404, a second guide wheel 405, an outer pulley 406, a first threading through hole 407, a second threading through hole 408, a third threading through hole 409, a lead platform 410, a threading fixing device 411, a threading bolt 4111, a threading nut 4112, a first end opening 4071, a second end opening 4072, a first through hole upper opening 4081 and a first through hole lower opening 4082;

a rope 501, a timing belt 502, and a meshing section 503.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 15, in an embodiment of the present invention, a curtain telescopic rail includes an inner rail 2, an outer rail 3, a first rotating wheel 6, a second rotating wheel 7, a conveyor belt 5, and a curtain rail pulley 4; one end of the inner guide rail 2 is nested in the outer guide rail 3, and the inner guide rail 2 and the outer guide rail 3 can relatively slide in a telescopic way; the first rotating wheel 6 and the second rotating wheel 7 are respectively arranged at two ends of the curtain telescopic guide rail; the conveyor belt is annular and is sleeved outside the first rotating wheel 6 and the second rotating wheel 7; the conveyor belt 5 is connected between the first rotating wheel 6 and the second rotating wheel 7, so that the first rotating wheel 6 is in transmission connection with the second rotating wheel 7, the conveyor belt 5 is positioned in the outer guide rail 3 and the inner guide rail 2, the curtain guide rail pulley 4 is connected with the conveyor belt and extends out of the outer guide rail 3 and the inner guide rail 2, and the curtain guide rail pulley 4 can move along the axial direction of the outer guide rail 3 and the axial direction of the inner guide rail 2 under the driving of the conveyor belt 5.

Referring to fig. 5 and 9, in a preferred embodiment, the curtain telescopic rail further includes a curtain rail fixing device 1, the curtain rail fixing device 1 includes a guide sleeve 101, and the guide sleeve 101 is a hollow tube with two open ends; the uide bushing 101 cover is outside outer guide rail 3 and inner rail 2 junction, the link of outer guide rail 3 inserts in uide bushing 101 from the second end of uide bushing 101, cooperate with uide bushing 101, the free end of outer guide rail 3 stretches out outside uide bushing 101, inner rail 2 inserts in uide bushing 101 from the first end of uide bushing 101, cooperate with uide bushing 101, the link of inner rail 2 inserts in outer guide rail 3, the free end of inner rail 2 stretches out outside uide bushing 101, curtain guide rail coaster 4 can pass uide bushing 101 when moving between outer guide rail 3 and inner rail 2. Further, the upper pulley body of the curtain rail pulley 4 is located inside the outer rail 3 and the inner rail 2, the lower pulley body of the curtain rail pulley 4 is located outside the outer rail 3 and the inner rail 2, and the upper pulley body and the lower pulley body move along both ends of the inner rail 2 and the outer rail 3. The length of the conveyor belt 5 is fixed when the conveyor belt is in a use state, the conveyor belt can limit the curtain guide rail to extend outwards, and the conveyor belt can be matched with the curtain guide rail fixing device 1 to fix the telescopic rod guide rail and prevent the telescopic rod guide rail from extending outwards and contracting inwards. The free ends of the outer rail 3 and the inner rail 2 refer to the ends of the outer rail 3 and the inner rail 2 opposite to the ends that are matched with the guide sleeve 101.

Referring to fig. 5 and 9, when in use, the second supporting surface 103 may be matched with the outer guide rail 3, the step at the joint of the first supporting surface 102 and the second supporting surface 103 is limited to the outer guide rail 3, the first supporting surface 102 may be matched with the inner guide rail 2, the inner guide rail 2 may slide along the first supporting surface 102 from the first end of the guide sleeve 101 and extend into the outer guide rail 3 of the telescopic rod, the position where the inner guide rail 2 extends into the outer guide rail 3 is adjusted to achieve the required curtain guide rail length, then the curtain guide rail may be fixed by the fixing component 113, and the fixing component 113 may be matched with the guide sleeve 101 to limit the inner guide rail 2 and the outer guide rail 3 from relatively retracting inwards. The curtain guide fixing device 1 can also be matched with curtain guide conveying mechanisms such as a conveying belt or a conveying rope, and the like for use, and because the length of the curtain guide conveying mechanism is fixed when the curtain guide conveying mechanism is in a use state, the curtain guide can be limited to extend outwards, the curtain guide fixing device 1 and the curtain guide conveying mechanism can fix the curtain telescopic rod guide to prevent the curtain telescopic rod guide from extending outwards and contracting inwards.

Referring to fig. 1, 5 and 6, in a preferred embodiment, a bottom surface of the guiding sleeve 101 is formed with a first supporting surface 102 and a second supporting surface 103, the first supporting surface 102 extends from a first end of the guiding sleeve 101 to the inside along the axial direction of the guiding sleeve 101, the second supporting surface 103 extends from a second end of the guiding sleeve 101 to the inside along the axial direction of the guiding sleeve 101, the first supporting surface 102 is connected with the second supporting surface 103, the first supporting surface 102 is higher than the second supporting surface 103, and a step is formed at the connection position of the first supporting surface 102 and the second supporting surface 103; the first supporting surface 102 supports the inner guide rail 2, the second supporting surface 103 supports the outer guide rail 3, the outer guide rail 3 abuts against a step, and the height difference between the bottom surfaces of the outer guide rail 3 and the inner guide rail 2 is matched with the height difference between the second supporting surface 103 and the first supporting surface 102. The abutment here is understood to mean that the outer guide rail 3 is connected with a step which resists the movement of the outer guide rail 3 towards the first end of the guide housing 111. The first bearing surface 102 is higher than the second bearing surface 103 with reference to the bottom surface of the guide sleeve 101. References in this application to being above are to the plane of the outer surface of the bottom of the sleeve 101.

Referring to fig. 7, in a preferred embodiment, a through groove 108 penetrating through the first supporting surface 102 and the second supporting surface 103 is formed in a bottom surface of the guide sleeve 101, a first sliding opening 201 is formed in a bottom of the inner guide rail 2 along the axial direction, a second sliding opening 301 is formed in a bottom of the outer guide rail 3 along the axial direction, and the first sliding opening 201 is communicated with the second sliding opening 301; both ends of the through-slot 108 communicate with the first and second slide openings 201 and 301, respectively. Further, the first sliding opening 201 is wider than the second sliding opening 301 and is a rectangular opening, and the first sliding opening 201 and the second sliding opening 301 are respectively arranged at the bottom of the inner rail 2 and at the middle position of the bottom of the inner rail 2. The first and second slide openings 201 and 301 are communicated with each other and each communicated with the through-groove 108, so that a curtain rail member such as the curtain rail block 4, which partially protrudes outside the curtain rail, can move between the inner rail 2 and the outer rail 3 through the guide housing 101.

Referring to fig. 7, in a preferred embodiment, the through slot 108 includes a first through section 109 and a second through section 110, the first through section 109 and the second through section 110 are communicated, and the positions of the first through section 109 and the second through section 110 correspond to the positions of the first supporting surface 102 and the second supporting surface 103, respectively; the width of the first through section 109 close to the first end of the guide sleeve 101 is larger than that of the first sliding opening 201, and the width of the first through section 109 close to the second through section 110 is adapted to the width of the first sliding opening 201; the width of the second through section 110 is adapted to the width of the second sliding opening 301. Further, the first sliding opening 201 is wider than the second sliding opening 301 and is a rectangular opening, the first sliding opening 201 and the second sliding opening 301 are respectively arranged at the bottom of the inner guide rail 2 and the middle position of the bottom of the inner guide rail 2, and the width of the first sliding opening 201 refers to the distance between two sides of the first sliding opening parallel to the axial direction of the inner guide rail 2; the width of the second slide opening 301 refers to the distance between its two sides parallel to the axial direction of the outer guide rail 3. When in use, the width of the first through section 109 close to the first end of the guide sleeve 101 is larger than the width of the first sliding opening 201 of the inner guide rail 2, and the width of the first through section 109 close to the second through section 110 is adapted to the width of the first sliding opening 201 of the inner rail; the width of the second through section 110 is adapted to the width of the first sliding opening 201 of the outer guide rail 3. The communication positions among the through groove 108 of the guide sleeve 101, the first sliding opening 201 of the inner guide rail 2 and the first sliding opening 201 of the outer guide rail 3 are smoother, and curtain guide rail components such as the curtain guide rail pulley 4 and the like pass through the communication positions more smoothly.

Referring to fig. 8, in the preferred embodiment, the curtain rail trolley 4 is rotatably mounted with a plurality of second pulleys 403, and the guide sleeve 101 further includes a transition table 112, wherein the transition table 112 protrudes upward relative to the first sliding support surface 202 and extends axially outward along the guide sleeve 101 from the connection between the first sliding support surface 202 and the second sliding support surface 302; a second sliding support surface 302 is arranged on the inner surface of the bottom of the outer guide rail 3, the second sliding support surface 302 extends axially from the connecting end of the outer guide rail 3 along the other end of the outer guide rail 3, and the second sliding support surface 302 is higher than the inner surface of the bottom of the outer guide rail 3; when the outer guide rail 3 and the guide sleeve 101 are matched, the transition table 112 is in butt fit with the second sliding support surface 302 in the axial direction of the guide sleeve 101, the second sliding support surface 302 is higher than the transition table 112, and the second pulley 403 can slide upwards from the transition table 112 to the second sliding support surface 302 or downwards from the second sliding support surface 302 to the transition table 112. The height of the transition table 112 (compared to the first support surface 102) is lower than the height of the pulley support table 302 (compared to the inner bottom surface of the outer rail 3), and the height of the transition table 112 is generally one-half of the height of the pulley support table 302. The setting can solve the following problems: when the height of the pulley support platform 302 is high, the problem that the pulleys of the curtain guide rail pulley 4 are not stable when the pulley support platform 302 is moved up and down can be solved, for example, when the height of the pulley support platform 302 is higher than the radius of the pulleys of the curtain guide rail pulley 4, the curtain guide rail pulley 4 may be obstructed from moving. Therefore, the transition table 112 can make the pulley of the curtain rail pulley 4 more stable when the pulley supports the upper pulley support table 302 and the lower pulley support table 302, and the operation is smoother.

Referring to fig. 2 and 6, in a preferred embodiment, a first guide rail 104 and a second guide rail 105 are formed at an upper portion of the guide sleeve 101, the first guide rail 104 and the second guide rail 105 are respectively located above the first supporting surface 102 and the second supporting surface 103 and extend along an axial direction of the guide sleeve 101, the first guide rail 104 and the second guide rail 105 are connected, and a step is also formed at a connection position of the first guide rail 104 and the second guide rail 105; the first guide rail 104 is fitted to the top end of the inner rail 2 so that both sides of the inner rail 2 are fixed with respect to the guide housing 101, and the second guide rail 105 is fitted to the top end of the outer rail 3 so that both sides of the outer rail 3 are fixed with respect to the guide housing 101. The first guide rail 104 and the second guide rail 105 are respectively located above the first support surface 102 and the second support surface 103 and extend in the axial direction of the guide housing 101, which means that the first guide rail 104 and the second guide rail 105 are located inside the guide housing 101 and away from the corresponding top end portions of the first support surface 102 and the second support surface 103. When the guide sleeve is used, the shape of the first guide rail 104 is matched with the top end of the inner guide rail 2, the shape of the second guide rail 105 is matched with the top end of the outer guide rail 3, and the step can be abutted against the connecting end of the outer guide rail 3, so that the guide sleeve 101 can limit the two sides of the inner guide rail 2, the two sides of the outer guide rail 3 and the connecting end.

Referring to fig. 2 and 7, in a preferred embodiment, the outer surface of the bottom surface of the guide sleeve 101 is provided with a transition surface 111, the transition surface 111 is located at the back of the first supporting surface 102, one end of the transition surface 111 near the joint of the first supporting surface 102 and the second supporting surface 103 is matched with the outer guide rail 3, and the other end is matched with the inner guide rail 2; the height difference between one end and the other end of the transition surface 111, which is matched with the outer guide rail 3, is adapted to the height difference between the inner guide rail 2 and the outer guide rail 3. The thickness of the bottom surface of the guide sleeve 101 becomes thinner gradually from the connection position of the first supporting surface 102 and the second supporting surface 103 to the first end of the guide sleeve 101, a transition surface 111 is arranged on the outer surface of the bottom surface of the guide sleeve 101, the transition surface 111 is positioned on the back surface of the first supporting surface 102 and positioned on two sides of the through groove 108, when the bottom surface of the guide sleeve 101 is placed on a horizontal plane, the transition surface 111 is obliquely arranged relative to the horizontal plane, and the height of the transition surface 111 close to the connection position of the first supporting surface 102 and the second supporting surface 103 is higher than the height of the transition surface 111 close to the first end of the guide sleeve 101. The other end of the transition surface 111 is matched with the inner guide rail 2, and can be understood as touching with the outer surface of the bottom of the inner guide rail 2 at the other end and can slide relatively or have a slight interval. The transition surface 111 is arranged to enable the outer pulley 406 of the curtain guide rail pulley 4 to smoothly transition between the guide sleeve 101 and the inner guide rail 2 and the outer guide rail 3 when the curtain guide rail is used in cooperation with the curtain guide rail pulley 4.

Referring to fig. 1, 2, 4 and 6, in a preferred embodiment, the curtain rail fixing device 1 further includes a fixing member 113, wherein the fixing member 113 penetrates through the outer shell of the guide sleeve 101 from the outside of the guide sleeve 101, and partially extends into the guide sleeve 101; the fixing member 113 is connected to the inner rail 2 and/or the outer rail 3 to fix the inner rail 2 and/or the outer rail 3 with respect to the guide housing 101. Preferably from the top of the guide sleeve 101 through the housing of the guide sleeve 101. Further, the fixing assembly 113 includes a screw connection fixing structure, a snap spring fixing structure, a clamping fixing structure, and the like.

Referring to fig. 1, 2, 4 and 6, in a preferred embodiment, the fixing assembly 113 is a fixing bolt 114, the guide sleeve 101 is further provided with a fixing bolt 114 hole matching with the fixing bolt 114, the fixing bolt 114 hole penetrates through the guide sleeve 101, and the fixing bolt 114 can extend into the guide sleeve 101 through the fixing bolt 114 hole to fix the inner guide rail 2; or

The fixing assembly 113 comprises a fixing bolt 114 and a fixing plate, the fixing plate is arranged in the guide sleeve 101, the guide sleeve 101 and the fixing plate are both provided with a fixing bolt 114 hole matched with the fixing bolt 114, and the fixing plate moves inwards to press and fix the inner guide rail 2 or moves outwards to clamp and fix the inner guide rail 2 between the fixing plate and the guide sleeve 101 under the rotation matching of the fixing bolt 114 and the fixing bolt 114 hole. Further, the fixing component 113 is a bolt fixing component, the bolt fixing component includes a fixing bolt 114, a fixing bolt hole 115 and a T-shaped nut 116, an upper portion of the T-shaped nut 116 is smaller than a lower portion thereof, a hollow limiting portion 117 with one end opened is arranged in the guide sleeve 101, the opening faces the guide sleeve 101, the upper portion of the T-shaped nut 116 can be nested in the limiting portion 117, and the fixing bolt 114 penetrates through the limiting portion and is connected with the T-shaped nut 116 through the fixing bolt hole 115; when the fixing bolt 114 and the T-nut 116 are rotationally engaged in the fixing bolt hole 115, the stopper 117 partially stops the upper portion of the T-nut 116, and the T-nut 116 can move out of the guide sleeve 101. The T-nut 116 can better fix the inner rail 2 and the guide sleeve 101.

Referring to fig. 12 to 15, in a preferred embodiment, the curtain rail pulley 4 includes a pulley main body 401, a plurality of first pulleys 402 and a plurality of second pulleys 403, the plurality of first pulleys 402 and the plurality of second pulleys 403 are rotatably connected to the pulley main body 401, the pulley main body 401 includes an upper pulley main body 401 and a lower pulley main body 401 connected to the upper pulley main body 401, the first pulleys 402 and the second pulleys 403 are disposed on two sides of the upper pulley main body 401, bottoms of the plurality of first pulleys 402 form a first sliding support surface 202, bottoms of the plurality of second pulleys 403 form a second sliding support surface 302, and the second sliding support surface 302 is higher than the first sliding support surface 202; the inner rail 2 is provided with a first sliding support surface 202, the outer rail 3 is provided with a second sliding support surface 302, when the curtain rail pulley 4 slides in the inner rail 2, one of the first pulley 402 and the second pulley 403 is supported on the first sliding support surface 202, when the curtain rail pulley 4 slides in the outer rail 3, the other of the first pulley 402 and the second pulley 403 is supported on the second sliding support surface 302, and the height difference between the first sliding support surface 202 and the second sliding support surface 302 is adapted to the height difference between the second sliding support surface 302 and the first sliding support surface 202.

Technical principle of the embodiment: the inner guide rail 2 and the outer guide rail 3 are respectively provided with a first sliding support surface 202 and a second sliding support surface 302; the first pulley 402 arranged on the curtain pulley forms a first sliding surface, and the second pulley 403 arranged on the curtain pulley forms a second sliding surface; the height difference between the first sliding support surface 202 and the second sliding support surface 302 is adapted to the height difference between the second sliding surface and the first sliding surface, so as to eliminate the influence of the height difference between the inner rail 2 and the outer rail 3 after the two are matched on the movement of the window curtain pulley.

The bottom of the first pulley 402 and the bottom of the second pulley 403 are the ends of the curtain pulley that support the pulley when the curtain pulley is in use, the first sliding surface can be understood as the ends of the plurality of first pulleys 402 that support the pulley are all in the same horizontal plane, and the second sliding surface can be understood as the ends of the plurality of second pulleys 403 that support the pulley are all in the same horizontal plane. The first sliding support surface 202 is a support surface provided in the inner rail 2 and cooperates with the first sliding surface to support the bottom of the first pulley as the window covering trolley moves within the rail. The second sliding support surface 302 is a support surface provided in the outer guide rail 3 and cooperates with the second sliding surface to support the bottom of the second pulley as the curtain carrier moves within the guide rail.

Referring to fig. 12 to 15, in a preferred embodiment, the first pulley 402 and the corresponding second pulley 403 are coaxial or have rotation axes parallel to each other, and the first pulley 402 and the second pulley 403 are disposed in a staggered manner in the axial direction of the first pulley 402 and the second pulley 403, and accordingly, the first sliding support surface 202 and the second sliding support surface 302 are disposed in a staggered manner in the axial direction of the first pulley 402 and the second pulley 403. The pulley has a more compact structure and is more convenient to produce and install due to the coaxial arrangement or the parallel design of the rotating shafts. The first sliding support surface 202 and the second sliding support surface 302 are arranged in a staggered mode to match the arrangement of the first pulley 402 and the second pulley 403, so that the problem that the pulley runs unstably between the inner guide rail 2 and the outer guide rail 3 is well solved.

Referring to fig. 12 to 15, in a preferred embodiment, the curtain rail pulley 4 further includes a first guide wheel 404, the first guide wheel 404 is rotatably connected to the upper pulley body 401, the first guide wheel 404 transversely penetrates the upper pulley body 401, a wheel edge of the first guide wheel 404 in a transverse direction protrudes outward relative to a side surface of the upper pulley body 401, the first guide wheel 404 rotates in the transverse direction, and the first guide wheel 404 is higher than the second sliding support surface 302;

the curtain guide rail pulley 4 further comprises a second guide wheel 405, the second guide wheel 405 is mounted at the top end of the upper pulley body 401 and can rotate in the transverse direction, and the wheel edge of the second guide wheel 405 protrudes outwards relative to the side surface of the upper pulley body 401 in the transverse direction;

the second guide wheel 405 is higher than the first guide wheel 404, and the second guide wheel 405 has a different radius from the first guide wheel 404;

a first guide groove 203 is arranged in the inner guide rail 2, a second guide groove 204 is arranged in the outer guide rail 3, when the curtain guide rail pulley 4 slides in the inner guide rail 2, one of a first guide wheel 404 and a second guide wheel 405 is positioned in the first guide groove 203 and matched with the first guide groove 203, when the curtain guide rail pulley 4 slides in the outer guide rail 3, the other of the first guide wheel 404 and the second guide wheel 405 is positioned in the second guide groove 204 and matched with the second guide groove 204, the widths of the first guide groove 203 and the second guide groove 204 are different, and the width difference between the first guide groove 203 and the second guide groove 204 is adapted to the diameter difference between the first guide wheel 404 and the second guide wheel 405. The transverse limiting of the pulley can be realized by matching the guide wheels with the grooves, so that the transverse running of the pulley is smooth.

Referring to fig. 10 to 11, in a preferred embodiment, the curtain rail pulley 4 includes a pulley main body 401 and a plurality of pulleys, the pulley main body 401 includes an upper pulley main body 401 and a lower pulley main body 401 connected to the upper pulley main body 401, the upper pulley main body 401 is rotatably mounted with a plurality of pulleys, the upper pulley main body 401 is provided with a first threading through hole 407, and the lower pulley main body 401 is provided with a second threading through hole 408; the conveyor belt 5 comprises a first conveyor belt and a second conveyor belt, the second conveyor belt is meshed with the second rotating wheel 7, the first conveyor belt is a rope, the first conveyor belt and the second conveyor belt are connected in an annular shape and sleeved on the first rotating wheel 6 and the second rotating wheel 7, and the first rotating wheel 6 is in transmission fit with the second rotating wheel 7; the curtain guide rail pulley 4 is connected with a first conveying belt, moves on the outer guide rail 3 and/or the inner guide rail 2 under the driving of the first conveying belt, an upper pulley main body 401 of the curtain guide rail pulley 4 can slide in the outer guide rail 3 and/or the inner guide rail 2, a lower pulley main body 401 of the curtain guide rail pulley 4 is positioned outside the outer guide rail 3 and the inner guide rail 2, and the first conveying belt sequentially penetrates through a first threading through hole 407 and a second threading through hole 408 and is fixed on the curtain guide rail pulley 4.

Referring to fig. 10 to 11, in use, the first threading through hole 407 and the second threading through hole 408 of the curtain rail pulley 4 are generally used together with the conveyor belt 5, the conveyor belt 5 may be formed by two structures, i.e., a first conveyor belt and a second conveyor belt, the first conveyor belt is a steel wire rope 501, the second conveyor belt is a synchronous belt 502, and the curtain rail is generally a curtain rail in which the outer rail 3 and the inner rail 2 can relatively slide in a telescopic manner. The threading mode of the steel wire rope 501 on the curtain guide rail pulley 4 is as follows: the first end opening 4071, the second end opening 4072, the third threading through hole 409, the second through hole upper opening 4081 and the second through hole lower opening 4082 of the second threading through hole 408 are sequentially passed through, and then fixed by the threading fixing device 411. A synchronizing wheel, a driven wheel, a conveyor belt 5 and a plurality of curtain guide rail pulleys 4 are generally arranged in the curtain guide rail, the synchronizing wheel and the driven wheel are respectively fixed at two ends of the curtain guide rail, and a lower pulley body 401 of the curtain guide rail pulleys 4 extends out of the curtain guide rail. The synchronous belt 502 is arranged at one end of the synchronous wheel, and the conveying belt 5 is sequentially connected with the synchronous wheel, the curtain guide rail pulley 4, the driven wheel and the synchronous wheel to form a ring. The curtain rail block 4 may be provided with a plurality of connection members connected to the wire rope 501 and the timing belt 502, and any one of the connection members is connected to the wire rope 501 through the first threading through hole 407 and the second threading through hole 408. When the length of the curtain guide rail needs to be adjusted, the threading fixing device 411 is loosened, the steel wire rope 501 is pulled through the first threading through hole 407 of the lower pulley main body 401, the length of the steel wire rope 501 in the curtain guide rail is changed, the length of the curtain guide rail is changed, and the threading fixing device 411 is screwed down after adjustment is achieved. The lead structure of the curtain guide rail pulley 4 is matched with the curtain guide rail to realize the extension and contraction of the guide rail, so that the size of the guide rail is prevented from being increased. Because one end of the through hole of the lower pulley body 401 extends out of the guide rail, the length of the steel wire can be temporarily changed through the through hole of the lower pulley body 401 and the threading fixing device 411, and the adjustment operation is convenient and easy; furthermore, the relative positions of the curtain guide rail pulley 4 and the second curtain guide rail pulley 4 can be rapidly changed, so that the curtain guide rail pulleys and the second curtain guide rail pulley can be used for double curtain opening.

In the preferred embodiment, the first belt includes a first cord segment and a second cord segment, the first cord segment and the second cord segment being separated, a first end of the first cord segment being connected to a first end of the second belt, a second end of the first cord segment being secured to the curtain rail block 4 by passing through the first threading thru-hole 407 and the second threading thru-hole 408, a first end of the second cord segment being connected to a second end of the second belt, and a second end of the second cord segment being secured to the curtain rail block 4 by passing through the first threading thru-hole 407 and the second threading thru-hole 408. Further, the first transmission belt is a steel wire rope 501, the second transmission belt is a synchronous belt 502, the steel wire rope 501 comprises a first steel wire rope 501 section and a second steel wire rope 501 section, the first steel wire rope 501 section is separated from the second steel wire rope 501 section, and two first threading through holes 407 and two second threading through holes 408 are correspondingly arranged; the first steel wire rope 501 section passes through the first threading through hole 407 and the second threading through hole 408, and the second steel wire rope 501 section passes through the other first threading through hole 407 and the other second threading through hole 408. The length of the steel wire rope 501 in the curtain telescopic guide rail can be conveniently and rapidly adjusted through the arrangement.

Referring to fig. 10 to 11, in a preferred embodiment, the curtain rail block 4 further includes a threading fixing device 411, the threading fixing device 411 is disposed on the lower block body 401 at one side of the second threading through hole 408 or the threading fixing device 411 is disposed in the second threading through hole 408, and the threading fixing device 411 fixes the second end of the first rope segment and the second end of the second rope segment on the curtain rail block 4. The threading fixture 411 being disposed in the second threading through hole 408 means that the threading fixture 411 is partially or entirely within the second threading through hole 408 and can fix the steel wire rope 501 by cooperating with the second threading through hole 408. Further, the threading fixing device 411 is a hole, a ring, a threading bolt 4111 structure, an elastic structure, a clamping structure and the like arranged on the main body 401 of the lower pulley, and the steel wire rope 501 can be fixed on the main body 401 of the lower pulley through the threading fixing device 411; further, the wire rope 501 may be wound around the second threading hole 408 and fixed by knotting or the like without providing the threading fixing means 411.

Referring to fig. 10 to 11, in a preferred embodiment, the second threading through hole 408 is formed in the lower block body 401 in a vertical direction of a hole of the threading bolt 4111, the second threading through hole 408 includes a second through hole upper opening and a second through hole lower opening 4082, and the second through hole lower opening 4082 is formed in the bottom of the lower block body 401; the threading fixing device 411 comprises a threading bolt 4111 and a threading nut 4112, the threading bolt 4111 can be matched with the second threading through hole 408, and the threading nut 4112 can be matched with an upper opening of the second through hole; the cooperation of the threading bolt 4111 and the threading nut 4112 secures the second end of the first cord segment and the second end of the second cord segment to the window curtain rail block 4. The wire rope 501 can be better fixed in the second threading through hole 408 by the cooperation of the threading bolt 4111 and the threading nut 4112, and the operation of adjusting the wire rope 501 can be conveniently carried out by screwing and unscrewing the threading bolt 4111 and the threading nut 4112.

Referring to fig. 10 to 11, in a preferred embodiment, a portion of the first conveyor belt is distributed on both sides of the carriage body 401 of the curtain rail carriage 4. Further, the first conveyor belt is generally a steel wire rope 501, the steel wire rope 501 sequentially passes through the first threading through hole 407 and the second threading through hole 408, and any one of the first threading through hole 407 and the second threading through hole 408 transversely passes through the pulley main body 401, so that the steel wire rope 501 is uniformly distributed on both sides of the pulley main body 401, and the steel wire rope 501 is easier to pull and fix.

Referring to fig. 10 to 11, in a preferred embodiment, the pulley body 401 of the curtain rail pulley 4 is further provided with a third threading through hole 409, the third threading through hole 409 transversely penetrates through the pulley body 401 of the curtain rail pulley 4, and the first conveyor belt sequentially penetrates through the first threading through hole 407, the third threading through hole 409 and the second threading through hole 408. Further, a third through-threading hole 409 is generally between the first through-threading hole 407 and the second through-threading hole 408, the third through-threading hole 409 extending transversely through the pulley body 401. The third threading through hole 409 is provided to allow the steel wire 501 to be attached to the pulley body 401.

Referring to fig. 10-11, in a preferred embodiment, first threading throughbore 407 includes a first end opening 4071 and a second end opening 4072 in communication with first end opening 4071, first end opening 4071 is on one side of upper block body 401, and second end opening 4072 is on the other side of upper block body 401; the first end opening 4071 is higher than the pulley on the same side and the outward protruding part of the pulley on the same side on one side of the upper pulley body 401, and the second end opening 4072 is lower than the pulley on the same side and the outward protruding part of the pulley on the same side on the other side of the upper pulley body 401; the parts of the conveyor belt 5 between the first end opening 4071 to the first rotating wheel 6 and the first end opening 4071 to the second rotating wheel 7 are higher than the outward protruding parts of the pulleys on the same side and the pulleys on the same side. Wherein the pulleys of the pulley main body 401 comprise a first pulley 402, a second pulley 403, a first guide pulley 404 and a second guide pulley 405, the first guide pulley 404 and the first guide pulley 405 are rotatably connected to the upper pulley main body 401, the first guide pulley 404 transversely penetrates through the upper pulley main body 401 and the pulley of the first guide pulley 404 in the transverse direction protrudes outwards relative to the side surface of the upper pulley main body 401; a first pulley 402 and a second pulley 403 rotatably connect the upper block body 401 on both sides of the body. The pulleys on the same side are the first pulley 402 and the second pulley 403 on the same side; the above-described outwardly projecting portion of the pulley on the same side refers to a portion where the first guide sheave 404 and the first guide sheave 405 project laterally outward with respect to the side of the upper block main body 401. The arrangement can reduce the transverse dimension of the curtain guide rail pulley 4, and the pulley of the curtain guide rail pulley 4 is separated from the steel wire rope 501, so that the steel wire rope 501 is prevented from blocking and winding the curtain guide rail pulley 4 in the running process.

Referring to fig. 10 to 11, in a preferred embodiment, the first threading through hole 407 is an arc-shaped through hole transversely penetrating through the pulley body 401, and the first end opening 4071 and the second end opening 4072 are disposed on two sides of the pulley body 401 in a staggered manner. The first threading through hole 407 is an arc-shaped through hole, or an arc-shaped through hole may be formed in the middle of the first threading through hole 407; the arc-shaped through holes are arranged, so that the steel wire rope 501 can be pulled more smoothly when being adjusted; the first end opening 4071 and the second end opening 4072 are arranged in a staggered manner to reduce the transverse dimension of the curtain rail block 4 and optimize the transverse and longitudinal stress conditions of the steel wire rope 501 and a threading through hole, so that the steel wire rope 501 can be pulled and fixed more easily.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.