阅读说明：本技术 反光罩及其卡盘组件 (Reflector and chuck assembly thereof ) 是由 曾伟均 于 2021-09-01 设计创作，主要内容包括：本发明提供了一种反光罩及其卡盘组件。卡盘组件包括底盘、滑环、顶盘。底盘用于承载多个与之铰接连接的伞骨。滑环固定设于底盘上,滑环包括环形侧壁及设于环形侧壁的导轨,导轨沿环形侧壁的周向延伸。顶盘可旋转套设于滑环,顶盘朝向所滑环固定设有导向轴,导向轴可移动设置于导轨。顶盘沿滑环的周向旋转,导向轴沿导轨移动,顶盘沿滑环的轴向升降；顶盘的升降运动压持伞骨的铰接端转动。在打开或收折上述反光罩的时候,卡盘组件可以避免操作人员费力操作,操作较为方便。(The invention provides a reflector and a chuck assembly thereof. The chuck component comprises a bottom plate, a sliding ring and a top plate. The chassis is used for bearing a plurality of umbrella ribs hinged with the chassis. The sliding ring is fixedly arranged on the chassis and comprises an annular side wall and a guide rail arranged on the annular side wall, and the guide rail extends along the circumferential direction of the annular side wall. The sliding ring is rotatably sleeved on the top disc, a guide shaft is fixedly arranged on the top disc towards the sliding ring, and the guide shaft can be movably arranged on the guide rail. The top disc rotates along the circumferential direction of the slip ring, the guide shaft moves along the guide rail, and the top disc ascends and descends along the axial direction of the slip ring; the lifting motion of the top plate presses the hinged end of the umbrella rib to rotate. When the reflector is opened or folded, the chuck assembly can avoid the laborious operation of operators, and the operation is more convenient.)

1. A chuck assembly for a reflector, comprising:

the chassis is used for bearing a plurality of umbrella ribs hinged with the chassis;

the sliding ring is fixedly arranged on the chassis and comprises an annular side wall and a guide rail arranged on the annular side wall, and the guide rail extends along the circumferential direction of the annular side wall;

the top disc is rotatably sleeved on the sliding ring, a guide shaft is fixedly arranged on the top disc towards the sliding ring, and the guide shaft is movably arranged on the guide rail;

the top disc rotates along the circumferential direction of the slip ring, the guide shaft moves along the guide rail, and the top disc ascends and descends along the axial direction of the slip ring; the lifting motion of the top plate presses the hinged end of the umbrella rib to rotate.

2. The reflector chuck assembly of claim 1, wherein the plurality of rails is spaced apart from the annular sidewall of the slip ring.

3. The reflector chuck assembly of claim 1 wherein the guide rails are guide slots.

4. The reflector chuck assembly as claimed in claim 3, wherein the guide shaft is disposed in the guide slot, and a sleeve is rotatably sleeved on the guide shaft and rolls along the guide slot.

5. The reflector chuck assembly of claim 1 wherein the guide track includes a first end and a second end, the guide track extending gradually downward from the first end to the second end, the first end or the second end being provided with a flat section, the flat sections being located on a same circumference of the slip ring.

6. The reflector chuck assembly as claimed in claim 1, wherein the top surface of the top plate is provided with a boss, the boss is provided with a guide shaft hole along the radial direction of the top plate, and the guide shaft is fixedly accommodated in the guide shaft hole.

7. The chuck assembly of reflector as claimed in claim 1, wherein a pressing plate and a needle roller are further disposed between the base plate and the top plate, the pressing plate is used for pressing the hinged end of the rib, the needle roller is pressed between the pressing plate and the top plate, the needle roller comprises a plate body and a plurality of needle rollers rotatably disposed on the plate body, the plurality of needle rollers are distributed along the radial direction of the plate body, the needle rollers rotate around their own axes, and the needle rollers are in line contact with the top plate and the pressing plate.

8. The reflector chuck assembly of claim 7, wherein the top plate defines an annular receiving groove on a side surface thereof facing the bottom plate, and the needle roller is received in the receiving groove.

9. The reflector chuck assembly of claim 7, wherein the platen includes an inner ring and an outer ring disposed around an outer periphery of the inner ring, the inner ring being disposed parallel to the needle dial, the inner ring being configured to carry the needle dial.

10. The reflector chuck assembly as set forth in claim 9, wherein said outer ring body is provided with a slope surface bent toward said base plate, said slope surface being adapted to press against a hinge end of said rib, said hinge end moving along said slope surface.

11. The reflector chuck assembly of claim 10 wherein the hinged ends of the ribs are in line contact with the beveled surface of the outer ring.

12. The reflector chuck assembly of claim 7, wherein the top plate has an outer periphery extending toward the bottom plate to form a fixing edge, the fixing edge has a slot, the outer periphery of the pressing plate slides into the slot by interference fit, and the pressing plate is retained in the slot.

13. The reflector chuck assembly of claim 1, further comprising a bayonet for attachment to a camera device, the bayonet being removably attachable to the chassis.

14. The reflector chuck assembly of claim 1, wherein the top plate and the bottom plate are respectively provided with auxiliary holes on outer sides thereof.

15. The reflector chuck assembly of claim 14, further comprising auxiliary pins inserted into the auxiliary holes.

16. A reflector comprising ribs, reflective fabric and a chuck assembly as claimed in any one of claims 1 to 15, wherein the reflective fabric is detachably mounted on the ribs, and the hinged ends of the ribs are hinged to the chassis.

Technical Field

The invention relates to shooting equipment, in particular to a reflecting shade and a chuck assembly thereof.

Background

The reflector is arranged on the studio lamp, the emitted light is softer, and light spots and shadows on the photo can be eliminated during shooting. The reflecting cover mostly supports reflecting cloth through umbrella-shaped folded umbrella ribs to form a reflecting surface of the reflecting cover.

The larger the reflecting surface of the reflecting cover is, the more uniform and soft the light is, and the color is more bright. In order to meet better shooting effect, the reflecting area of the reflecting shade is required to be larger and larger. However, for the reflector with an excessively large volume, when the reflector is folded or unfolded, a large resistance needs to be overcome, and the operation is inconvenient.

Disclosure of Invention

An object of the present invention is to provide a reflector and a chuck assembly thereof which are convenient to use.

A chuck assembly for a reflector comprising:

the chassis is used for bearing a plurality of umbrella ribs hinged with the chassis;

the sliding ring is fixedly arranged on the chassis and comprises an annular side wall and a guide rail arranged on the annular side wall, and the guide rail extends along the circumferential direction of the annular side wall;

the top disc is rotatably sleeved on the sliding ring, a guide shaft is fixedly arranged on the top disc towards the sliding ring, and the guide shaft is movably arranged on the guide rail;

the top disc rotates along the circumferential direction of the slip ring, the guide shaft moves along the guide rail, and the top disc ascends and descends along the axial direction of the slip ring; the lifting motion of the top plate presses the hinged end of the umbrella rib to rotate.

In one embodiment, the guide rail is a plurality of guide rails, and the plurality of guide rails are distributed on the annular side wall of the slip ring at intervals.

In one embodiment, the guide rail is a guide groove.

In one embodiment, the guide shaft penetrates through the guide groove, a shaft sleeve is rotatably sleeved on the guide shaft, and the shaft sleeve rolls along the guide groove.

In one embodiment, the guide rail includes a first end and a second end, the guide rail gradually extends downward from the first end to the second end, and the first end or the second end is provided with a flat section, and the flat sections are located on the same circumference of the slip ring.

In one embodiment, a boss is arranged on the top surface of the top plate, a guide shaft hole is formed in the boss along the radial direction of the top plate, and the guide shaft is fixedly accommodated in the guide shaft hole.

In one embodiment, a pressure plate and a needle roller plate are further arranged between the base plate and the top plate, the pressure plate is used for pressing and holding the hinged end of the umbrella rib, the needle roller plate is pressed and held between the pressure plate and the top plate, the needle roller plate comprises a plate body and a plurality of needle rollers which are rotatably arranged on the rotating plate, the plurality of needle rollers are distributed along the radial direction of the plate body, the needle rollers axially rotate around the needle rollers, and the needle rollers are in line contact with the top plate and the pressure plate.

In one embodiment, an annular accommodating groove is formed in a side surface of the top plate facing the bottom plate, and the needle roller plate is accommodated in the accommodating groove.

In one embodiment, the pressure plate includes an inner ring and an outer ring disposed on an outer periphery of the inner ring, the inner ring is disposed parallel to the needle dial, and the inner ring is configured to carry the needle dial.

In one embodiment, the outer ring body is provided with an inclined surface, the inclined surface is bent towards the chassis, the inclined surface is used for pressing and holding the hinged end of the umbrella rib, and the hinged end moves along the inclined surface.

In one embodiment, the hinge end of the rib is held in line contact with the inclined surface of the outer ring body.

In one embodiment, the outer periphery of the top plate extends towards the bottom plate to form a fixing edge, a clamping groove is formed in the fixing edge, the outer periphery of the pressing plate slides into the clamping groove through interference fit, and the pressing plate is limited in the clamping groove.

In one embodiment, the portable electronic device further comprises a bayonet for connecting the camera shooting device, and the bayonet is detachably connected with the chassis.

In one embodiment, the outer side surfaces of the top plate and the slip ring are respectively provided with an auxiliary hole.

In one embodiment, the device further comprises an auxiliary pin, and the auxiliary pin is correspondingly inserted into the auxiliary hole.

The utility model provides a reflector, includes rib, reflection of light cloth and chuck subassembly, reflection of light cloth can be dismantled and locate on the rib, the hinged end of rib articulate in on the chassis.

According to the technical scheme, the invention has at least the following advantages and positive effects:

above-mentioned chuck subassembly of reflector can avoid operating personnel to use great strength to prop up each rib, can strut the rib through rotating the top dish. When the umbrella ribs are folded, the top plate rotates reversely, so that the limit of the umbrella ribs can be released, and the umbrella ribs are folded. Therefore, when the chuck assembly of the reflecting shade is used, the operation of operators which is hard can be avoided, the operation is convenient, and the convenience of the reflecting shade is improved.

Drawings

Fig. 1 is a perspective view of the reflector of the present embodiment in a folded state;

figure 2 is a perspective view of the reflector according to figure 1 in an open state;

figure 3 is an exploded view of the reflector according to figure 2;

FIG. 4 is a perspective view of an umbrella bead according to the reflector shown in FIG. 2;

FIG. 5 is a top view of the reflector according to FIG. 1;

FIG. 6 is a cross-sectional view of the reflector shown in FIG. 5 taken along the direction B-B;

figure 7 is an enlarged partial view of an exploded view of the reflector according to figure 3;

FIG. 8 is an exploded view of the top disk of the reflector according to FIG. 3;

FIG. 9 is a cross-sectional view of the reflector according to FIG. 2;

FIG. 10 is a cross-sectional view of the reflector according to FIG. 5 taken along the direction A-A.

Reference numerals: 10. a chuck assembly; 11. a chassis; 110. reinforcing ribs; 111. a hinge portion; 112. a shaft groove; 113. a limiting member; 114. a screw hole; 115. accommodating grooves; 116. lines; 119. a second auxiliary hole site; 12. a slip ring; 121. an annular sidewall; 122. a guide rail; 1221. a first end; 1222. a second end; 1223. flattening; 123. an avoidance groove; 13. a top tray; 130. reinforcing ribs; 131. a guide shaft; 132. a boss; 133. a guide shaft hole; 134. fixing grooves; 135. a fixing member; 136. a shaft sleeve; 137. an accommodating groove; 138. a fixing edge; 139. a card slot; 1390. a first auxiliary hole site; 14. a bayonet; 141. a protrusion; 142. a convex edge; 15. a gasket; 16. a needle rolling disc; 161. a tray body; 162. rolling needles; 17. a platen; 171. an inner ring body; 172. an outer ring body; 173. a bevel;

20. umbrella ribs; 21. a hinged end; 22. a hinge sleeve; 23. pressing and holding the noodles; 24. a pivot; 25. umbrella beads; 252. burying a wire groove; 253. a wire passing hole; 254. positioning a groove;

30. reflective cloth; 31. windowing; 50. an auxiliary pin; 91. a screw; 92. and (5) fixing the bolt.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like.

In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Preferred embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings of the present specification.

The present disclosure provides a reflector and a chuck assembly thereof. The chuck assembly can be used for fixedly connecting the camera equipment (not shown) on the reflector, so that the camera equipment can be conveniently used for shooting. The image pickup apparatus may be various kinds of lighting source apparatuses, a camera, or a zoom apparatus, or the like. The reflecting shade can be a soft light box, and can also be a parabolic shade and the like. One end opening of the reflecting cover is used for being installed with the light source, and the other end opening is a light outlet of light of the light source. In this embodiment, the reflector is a parabolic reflector. When the light source is positioned at the focus of the parabolic reflector, the light rays are reflected into parallel light beams through the reflecting layer and are emitted from the light outlet of the reflecting reflector.

Referring to fig. 1 and 2, in the present embodiment, the reflector includes a chuck assembly 10, a plurality of ribs 20, and a reflective fabric 30. The reflective cloth 30 is detachably mounted on the umbrella ribs 20. One end of the rib 20 is hinged to the chuck assembly 10. The umbrella ribs 20 can be opened and folded in an umbrella shape relative to the chuck assembly 10, so as to open and retract the reflector. Wherein fig. 1 is a diagram of the reflector in a folded state, and fig. 2 is a diagram of the reflector in an open state.

The umbrella rib 20 is a long and narrow support rod for supporting the reflective fabric. The ribs 20 have a certain elasticity and toughness, for example, the ribs 20 may be made of fiber or metal rod.

Referring also to fig. 3, the end of rib 20 adjacent to chuck assembly 10 is hinged end 21. The hinged end 21 is externally provided with a hinged sleeve 22. The hinged end 21 is connected to the chuck assembly 10 by a hinge sleeve 22. The ribs 20 are disposed through the hinge sleeve 22. The hinge sleeve 22 may be a plastic member. The outer volume of the hinge sleeve 22 is greater than the outer volume of the ribs 20 to facilitate manipulation of the ribs 20 by the chuck assembly 10 through the hinge sleeve 22.

Specifically, the outer side surface of the hinge sleeve 22 is provided with an arc-shaped pressing surface 23. The surface of the pressing surface 23 is an arc surface. The arcuate surfaces help to hold the hinged end 21 in motion with the ribs 20. The hinge sleeve 22 is provided with pivots 24 on opposite sides. The hinged end 21 is pivoted about a pivot 24.

The end of the ribs 20 remote from the chuck assembly 10 is provided with an umbrella bead 25. The ribs 20 are disposed through the beads 25. The umbrella beads 25 may be fixedly attached to the reflective fabric 30. Therefore, the umbrella bead 25 can cover the end of the umbrella rib 20, and the reflective cloth is better fixedly connected with the umbrella rib 20 through the umbrella bead 25. On the other hand, the umbrella bead 25 can also be used for installing light effect accessories so as to increase the light effect of the reflector. For example, the umbrella bead 25 may be used to mount soft yarns, a bundle light grid, and the like.

Referring to fig. 4, a pair of wire embedding grooves 252 are formed on opposite sides of the umbrella bead 25. The bottom of the wire embedding groove 252 is provided with a wire passing hole 253, and the wire passing hole 253 is communicated with the two wire embedding grooves 252. The thread passes through the thread passing hole 253, and the reflective cloth 30 is fixed on the umbrella bead 25 by sewing. The thread is accommodated in the thread embedding groove 252 to keep the surface of the umbrella bead 25 neat.

The umbrella bead 25 is also provided with a positioning groove 254. The two positioning grooves 254 are disposed on two sides of the rod body. The positioning groove 254 can facilitate the positioning of the flatcar mold with the umbrella bead 25, avoiding the rotation of the umbrella bead 25 in the circumferential direction when the umbrella bead 25 and the reflective fabric 30 are connected by a sewing thread.

The reflective fabric 30 includes an inner reflective layer (not shown) and an outer light-shielding layer (not shown). The reflective fabric 30 may be a soft fabric. The reflective cloth 30 is provided with an openable window 31. The window 31 is used for an electric cable or the like passing through the light source. The opening 31 is covered with reflective cloth to prevent the reflective surface of the reflector from being complete and prevent light from being emitted from the opening 31. It can be understood that the opening window 31 can be opened and closed by magic tape.

The chuck assembly 10 of the present embodiment can also be used to open and fold the umbrella ribs 20 and the reflective fabric 30.

Referring also to fig. 3, the chuck assembly 10 may include a bottom plate 11, a slip ring 12, and a top plate 13. The ribs 20 are hinged to the chassis 11. The top plate 13 rotates in the circumferential direction of the slip ring 12, and the top plate 13 moves up and down in the axial direction of the slip ring 12. The lifting movement of the top plate 13 relative to the base plate 11 presses the hinged end 21 of the rib 20 and causes it to rotate. The hinged ends 21 of the ribs 20 are relatively rotated to open or store the ribs 20.

Above-mentioned chuck subassembly 10 of reflector can avoid operating personnel to use the gas of great power to push away, prop up each rib 20, can prop up rib 20 through rotating top dish 13. When the umbrella ribs 20 are folded, the top plate 13 rotates reversely, so that the limit of the umbrella ribs 20 can be released, and the umbrella ribs 20 are folded. Therefore, when the chuck assembly 10 of the reflector is used, the labor-consuming operation of operators can be avoided, the operation is convenient, and the convenience of the reflector is improved.

The base plate 11 is an annular plate. The base plate 11 may be made of metal to enhance the strength of the base plate 11 and prolong the service life of the chuck assembly 10. Further, a plurality of ribs 110 are provided on the surface of the chassis 11. The reinforcing ribs 110 can enhance the strength of the chassis 11 to ensure that the chassis 11 can be used repeatedly.

The chuck assembly 10 further includes a bayonet 14 for attachment of a light source. The mount 14 is used for connecting an image pickup apparatus. In this embodiment, the bayonet may be connected to a lighting device or a focusing rod zooming device. The image pickup apparatus will be described by taking as an example a light source and a focus zoom apparatus that moves in accordance with the light source. The bayonet 14 may be a BaoRong bayonet or other special bayonet. The specific type of bayonet 14 is not limited herein.

Specifically, in the present embodiment, the mount 14 is provided with a plurality of protrusions 141 on the outer side thereof, to which the imaging device is engaged. The protrusion 141 can realize the limit connection between the bayonet 14 and the camera device. It will be appreciated that the projection 141 may be omitted when the bayonet 14 is a different type of bayonet 14. The bayonet 14 can also be in limit connection with the camera device through other corresponding types of structural forms.

The bayonet 14 is detachably connected with the chassis 11. The inner ring of the chassis 11 is used for mounting the bayonet 14. The bayonet 14 is located on the inside of the chassis 11. In addition, the central axis direction of the chassis 11 and the central axis direction of the bayonet 14 coincide with the optical axis direction of the reflector. In addition, the central axis direction of the slip ring 12 and the central axis direction of the top disc 13 coincide with the optical axis direction of the reflector.

Referring to fig. 5 and 6, the bayonet 14 has a protruding edge 142. The protruding edge 142 can be fixedly connected with the chassis 11 through the screw 91, so as to realize the detachable connection of the bayonet 14 and the chassis 11. When the type of bayonet 14 needs to be replaced, the screw needs to be removed. In other embodiments, the bayonet 14 may also be detachably connected to the chassis 11 by a snap-fit connection.

The chuck assembly 10 further includes a shim 15. The washer 15 is sleeved on the screw and pressed on the convex edge of the bayonet 14 and the chassis 11 to ensure that the bayonet 14 can be stably fixed.

Referring to fig. 7, the annular bearing surface of the bottom plate 11 is used for bearing a plurality of umbrella ribs 20 hinged with the bottom plate. The annular bearing surface of the chassis 11 is provided with a plurality of hinge portions 111 for hinging the umbrella ribs 20. The hinges 111 are distributed uniformly in the circumferential direction of the annular support surface. The hinge portion 111 is protruded on the annular bearing surface of the chassis 11.

Specifically, the plurality of hinge portions 111 are disposed at intervals from each other. Shaft grooves 112 for receiving the pivots 24 of the umbrella ribs 20 are opened at both sides of the hinge portion 111. The shaft slot 112 opens at the top surface of the hinge portion 111, so that the pivot 24 of the hinge end 21 can enter the shaft slot 112 from the opening. The two pivot shafts 24 at the same hinge end 21 can be respectively received in the shaft slots 112 of the two adjacent hinge portions 111, and the hinge end 21 and the hinge portions 111 form a hinged connection.

The top of the hinge portion 111 is further provided with a limiting member 113, and the limiting member 113 blocks the top opening of the shaft slot 112. After the hinge end 21 is hinged to the hinge portion 111, the hinge portion 111 blocks the opening of the shaft slot 112 on the top surface of the hinge portion 111 through the limiting member 113. The limiting member 113 can prevent the pivot shaft 24 from sliding out of the shaft slot 112.

Specifically, in the present embodiment, since the hinge portion 111 has a certain height, the shaft groove 112 also has a certain height. The pivot shaft 24 can move up and down along the extending direction of the shaft groove 112 when the pivot shaft 24 is pressed to rotate passively. That is, when the umbrella ribs 20 are in the collapsed state, the pivot shaft 24 is located at the bottom of the shaft groove 112; when rib 20 is in the open position, pivot 24 is at the top of shaft slot 112. When the pivot shaft 24 moves up and down along the shaft groove 112 while rotating in the shaft groove 112, the hinge end 21 can be easily rotated into position to facilitate the opening of the reflector.

When the umbrella frame 20 is fully opened, the pivot shaft 24 is at the top of the shaft groove 112 and can be supported against the stopper 113, so as to ensure that the umbrella frame 20 can be stably opened.

In this embodiment, the position-limiting member 113 may be a large head screw. The top of the hinge portion 111 is provided with a screw hole 114. When the big head screw is screwed on the top of the hinge portion 111, the head of the big head screw will block the opening of the shaft slot 112 to prevent the pivot 24 from sliding out of the shaft slot 112. Therefore, the stopper 113 can perform a stopper function on the pivot shaft 24, and the rib 20 can be stably placed in the open state.

The outer periphery of the chassis 11 is further opened with a receiving groove 115 for receiving the umbrella rib 20. When the umbrella frame 20 is in the storage state, the umbrella frame 20 can be stored in the storage groove 115, and the reflector in the storage state is kept flush, so that the appearance is kept neat. The number of the receiving grooves 115 may be set corresponding to the number of the umbrella ribs 20, and the receiving grooves 115 may be plural.

Referring to fig. 6, a side surface of the chassis 11 facing away from the hinge portion is provided with a texture 116. The surface of the texture 116 is provided with a diffuse reflection layer (not shown). The diffuse reflection layer can perform diffuse reflection on light of the light source so as to ensure that the light in the reflector is soft. Specifically, in the present embodiment, the bottom plate 11 has a wave shape. The ridges 116 of the chassis 11 may be wavy. In other embodiments, the texture may also be a stepped texture.

Referring to fig. 7, the slip ring 12 may be a metal ring with a certain height. The slip ring 12 is fixedly arranged on the chassis 11. Specifically, the slip ring 12 is fixedly connected to the chassis 11 by screws. The end face of the slip ring 12 close to the chassis 11 is provided with a screw hole, the slip ring 12 is arranged on the chassis 11, and the fixing bolt 92 penetrates through the chassis 11 to be fixed with the slip ring 12 in a threaded manner.

The slip ring 12 includes an annular sidewall 121 and a guide rail 122 disposed on the annular sidewall 121. The guide rails 122 are used to provide a guiding function for the rotation of the top plate 13 relative to the slip ring 12. The guide rail 122 extends in the circumferential direction of the annular side wall 121. The guide rail 122 extends helically along the annular side wall 121. When the top plate 13 rotates along the guide rail 122, the top plate 13 is raised or lowered in the axial direction of the slip ring 12.

Specifically, in the present embodiment, the guide rail 122 is provided in plurality. A plurality of rails 122 are spaced apart on the annular sidewall 121 of the slip ring 12. The plurality of guide rails 122 may enable the top plate 13 to stably rotate along the slip ring 12.

The guide rail 122 includes a first end 1221 and a second end 1222. The guide rail 122 extends gradually downward from the first end 1221 to the second end 1222. The guide rail 122 is also provided with a flat section 1223. The flat sections 1223 are located on the same circumference of the slip ring 12. The flat sections 1223 are located in the circumferential direction of the same cross section of the slip ring 12. In the axial direction perpendicular to the slip ring 12, the flat section 1223 is a horizontal section, and there is no upward and downward inclination angle. The flat section 1223 can be disposed at the first end 1221 or at the second end 1222 depending on the corresponding motion state of the guide rail 122. In particular, in this embodiment, the second end 1222 is provided with the flat section 1223.

In this embodiment, the guide rail 122 is a guide groove. The guide groove can be in a through hole shape or a groove shape, and the like, so long as the guide groove can play a role in guiding the rotation.

An avoiding groove 123 is arranged on the end surface of the slip ring 12 far away from the chassis 11. The avoiding groove 123 is used for corresponding to a protruding structure such as a locking device on the outer side of the installed camera equipment, so that the height of the sliding ring 12 is avoided, and interference is generated on the installation and the use of the camera equipment. The escape groove 123 may be plural.

Referring to fig. 8, the top disk 13 is an annular disk. The top disk 13 may be made of metal to enhance the strength of the top disk 13 and to increase the service life of the chuck assembly 10. Further, a plurality of ribs 130 are provided on the surface of the top plate 13. The reinforcing ribs 130 can reinforce the strength of the top plate 13 to ensure that the top plate 13 can be used repeatedly.

The top disc 13 is rotatably sleeved on the slip ring 12. The top disk 13 rotates in the circumferential direction of the slip ring 12, and the top disk 13 moves up and down in the axial direction of the slip ring 12. The lifting movement of the top plate 13 holds the hinged end 21 of the rib 20 in rotation, driving the rib 20 to open and fold.

The top plate 13 is fixedly provided with a guide shaft 131 toward the slip ring 12. Specifically, in this embodiment, the top surface of the top plate 13 is provided with a boss 132. The boss 132 has a guide shaft hole 133 formed along the radial direction of the top disk 13, and the guide shaft 131 is fixedly accommodated in the guide shaft hole 133. A fixing groove 134 is formed on the cylindrical surface of the guide shaft 131.

The slip ring 12 is further provided with a fixing 135 for fixing the guide shaft 131. The fixing member 135 is inserted into the guide shaft hole 133 from the top of the boss 132, and the fixing member 135 is received in the fixing groove 134 of the guide shaft 131. The fixing member 135 limits the axial direction of the guide shaft 131 so that the guide shaft 131 can be stably received in the guide shaft hole 133.

Specifically, the fixing groove 134 is an arc-shaped groove. The fixing member 135 is a fixing bolt. When the fixing bolt is screwed into the guide shaft hole 133 from the top surface of the boss 132, and the shape of the arc groove is matched with the shape of the cylindrical surface of the fixing bolt, at least part of the fixing bolt is accommodated in the arc groove, and the fixing bolt limits and fixes the guide shaft 131.

In other embodiments, the guide shaft 131 may be fixed to the top plate 13 by other methods, such as welding, riveting, and the like.

Referring to fig. 9, the guide shaft 131 is movably disposed on the guide rail 122. When the top plate 13 rotates relative to the slip ring 12, the guide shaft 131 rotates along the track of the guide rail 122. Due to the guiding action of the guide rail 122, the top plate 13 moves up and down in the axial direction along the slip ring 12.

Specifically, in the present embodiment, when the top disk 13 moves down in the axial direction of the slip ring 12, the top disk 13 drives the reflector to open. The guide shaft 131 moves from the first end 1221 to the second end 1222 and remains positioned at the flat section 1223. Since the top plate 13 needs to keep a large pressure to hold the hinged ends of the ribs when the reflector is in the open state, the flat section 1223 can be beneficial to the guide shaft 131 to keep a stable state at the position, so that the reflector is kept in the open state. When the top disc 13 is moved upwards in the axial direction of the slip ring 12, the reflector is in the process of being folded. The guide shaft 131 first passes through the flat section 1223 and moves from the second end 1222 to the first end 1221.

Specifically, in the present embodiment, the guide shaft 131 is inserted into the guide groove. The guide shaft 131 is rotatably sleeved with a shaft sleeve 136, and the shaft sleeve 136 rolls along the guide groove. The sliding friction between the guide shaft 131 and the guide groove is converted into rolling friction between the sleeve 136 and the guide groove by the sleeve 136, so that the friction of the top disc 13 rotating relative to the slip ring 12 is reduced, and the rotation of the top disc 13 is convenient to control.

The guide shafts 131 are plural and uniformly distributed on the top plate 13 to ensure that the top plate 13 can stably move along the guide rail 122. Accordingly, the boss 132, the guide shaft hole 133, the fixing member 135, and the bushing 136 are provided in plural numbers, and are provided correspondingly to the position of the guide shaft 131.

Referring to fig. 3 again, the chuck assembly 10 of the reflector of the present embodiment further includes a needle plate 16 and a platen 17. The needle roller 16 and the pressure plate 17 are both sleeved on the slip ring 12 and are arranged between the bottom plate 11 and the top plate 13.

Referring to fig. 3 and 10, a side surface of the top plate 13 facing the bottom plate 11 is provided with an annular receiving groove 137. The accommodation groove 137 accommodates the dial 16. The needle roller plate 16 includes a plate body 161 and a plurality of needle rollers 162 rotatably disposed on the plate body 161. The roller pins 162 are cylinders with uniform sizes, and a plurality of roller pins 162 are distributed along the radial direction of the disc body 161 and rotate around the axial direction of the roller pins. The needle roller 162 can freely rotate on the disc 161. The needle rollers 162 abut against the bottom surfaces of the receiving grooves 137 of the top plate 13, and the needle rollers 162 contact the top plate 13 in a line contact manner.

The outer periphery of the top plate 13 is formed with a fixing rim 138 extending toward the bottom plate 11. In this embodiment, the inner side wall of the fixing edge 138 is provided with a slot 139 for mounting the pressure plate 17. The engaging groove 139 includes a transition section and a limiting section. The pressure plate 17 enters the clamping groove 139 through the transition section and continues to slide to the limiting section, and the pressure plate 17 is limited in the clamping groove 139. The pressure plate 17 is clamped into the clamping groove 139 through interference fit, and the chuck 17 needs to be limited in the clamping groove 139, so that the chuck 17 and the top plate 13 are prevented from being separated from each other. The chuck 17 is also freely movable, however, the chuck 17 can rotate relative to the slip ring 12.

In other embodiments, the inner sidewall of the retaining rim 138 may be connected to the outer periphery of the platen 17 by other interference fit structures.

The platen 17 is provided below the needle dial 16 and above the base plate 11. The needle dial 16 is held pressed between the pressure plate 17 and the top plate 13. The pressure plate 17 can be used both to support the needle plate 16 and to hold the hinged end 21 of the ribs 20.

Specifically, in the present embodiment, the pressure plate 17 includes an inner ring 171 and an outer ring 172 provided on the outer periphery of the inner ring 171. The inner ring 171 is correspondingly disposed at the opening of the receiving groove 137 of the top plate 13, so that the inner ring 171 can limit the needle roller 16 in the receiving groove 137. Inner ring 171 is arranged parallel to needle dial 16, and inner ring 171 is used to carry needle dial 16. The surface of the inner ring 171 facing the needle dial 16 is flat, and the needles of the needle dial 16 are held in line contact with the inner ring 171.

When the top disc 13 rotates, the roller needles of the top disc 13 and the roller needle disc 16 are pressed against each other, so that the top disc 13 drives the roller needles to rotate, the roller needles rotate, and small rolling friction force is generated between the roller needles and the pressure plate 17, the rolling friction force is not enough to rotate the pressure plate 17, and the pressure plate 17 is kept stable. Also, the frictional resistance to the rotation of the top plate 13 is greatly reduced, facilitating the rotation operation of the top plate 13.

The outer ring 172 has an inclined surface 173, and the inclined surface 173 is bent toward the chassis 11. Ramp 173 is used to hold the hinged end 21 of rib 20 in compression, with hinged end 21 moving along ramp 173. The hinge end 21 of the rib 20 maintains line contact with the inclined surface 173 of the outer ring body 172.

When top plate 13 rotates, top plate 13 moves up and down, and pressure exists between top plate 13 and hinged end 21 of rib 20. The pressing point between the inclined surface 173 and the hinged end 21 is the stress point, and the hinged end 21 is the pivot 24. Therefore, the outer ring body 172 presses between the hinge ends 21 to generate a moment capable of rotating the hinge ends 21.

The needle dial 16 can transmit the pressure of the top plate 13 to the pressure plate 17 uniformly, and the pressure on the pressure plate 17 is also distributed uniformly. The pressure plate 17 can also hold the hinged ends 21 of the ribs more uniformly, so that the pressure applied to the hinged end 21 of each rib 20 is also more uniform, and the rotation of the ribs is kept uniform.

Referring to fig. 1 and 2, the chuck assembly 10 of the reflector further includes auxiliary pins 50, wherein auxiliary holes are respectively formed on the outer side surfaces of the top plate 13 and the bottom plate 11, and the auxiliary pins 50 are correspondingly inserted into the auxiliary holes.

The outer side of the top plate 13 is provided with a first auxiliary hole 1390. The outer side of the chassis 11 is provided with a second auxiliary hole 119. The first auxiliary hole 1390 and the second auxiliary hole 119 can be inserted into the auxiliary pin 50, and the auxiliary pin 50 can be conveniently held by an operator. An operator respectively holds one auxiliary pin 50, and meanwhile, the auxiliary pin 50 can increase the torque of the rotating force by exerting force, so that the top plate 13 can be conveniently rotated relatively.

The opening position of the auxiliary hole position requires enough strength to ensure the strength of the top disc 13 and the bottom disc 11. Specifically, the outer side wall of the boss 132 of the top plate 13 is provided with a first auxiliary hole 1390. The outer side wall of the hinged part of the chassis 11 is provided with a second auxiliary hole 119.

Also, there may be a plurality of first auxiliary hole 1390 and a plurality of second auxiliary hole 119. An operator can select two of the first auxiliary hole position 1390 and the second auxiliary hole position 119 according to the selection of the user, and the auxiliary hole position with a more convenient operation distance is operated. The auxiliary hole positions enhance the convenience of operation and are more humanized.

When the rotation is completed, the auxiliary pin 50 can be removed from the auxiliary hole position without affecting the volume and normal use of the chuck assembly 10.

The auxiliary pin 50 may be replaced with a general screwdriver, a metal bar, or the like. As long as can cooperate with the auxiliary hole site, make things convenient for top plate 13 to rotate the operation can.

Referring to fig. 6, when the reflector is in the folded state, the guide shaft 131 of the top plate 13 is located at the first end 1221 of the guide rail 122. The top disc 13 is now located at the end of the slip ring 12 remote from the bottom disc 11. The hinged end 21 of rib 20 remains in the vertical initial position and the contact position of hinged end 21 with pressure plate 17 is closer to the outside of ramp 173. The pivot 24 of the hinged end 21 is located at the top of the shaft slot 112.

When the reflector needs to be opened, an operator rotates the two auxiliary pins 50 to enable the two auxiliary pins to approach each other, so that the top disc 13 is driven to rotate. During the rotation of the top plate 13, the guide shaft 131 moves along the guide rail 122, and the top plate 13 moves close to the bottom plate 11. The top disk 13 is pressed against the hinged end 21 by the needle disk 16 and the pressure disk 17. The hinged end 21 is subjected to a turning moment, the hinged end 21 being turned towards the chassis 11. While the pivot shaft 24 rotates about the pivot shaft 24, the pivot shaft 24 moves downward along the shaft groove 112, and the contact position of the pivot shaft 21 and the pressure plate 17 moves from the outside to the inside along the inclined surface 173 until the umbrella ribs 20 are completely opened.

Referring to fig. 9, when the reflector is in the open state, the guide shaft 131 of the top plate 13 moves to the flat section 1223 of the second end 1222 of the guide rail 122. The top disk 13 stops rotating and remains in place. The ribs 20 remain open and the hinged end 21 contacts the pressure plate 17 at a location relatively close to the inside of the pressure plate 17. The pivot 24 of the hinged end 21 is located at the bottom of the shaft slot 112. The flat section 1223 of the second end 1222 of the guide rail 122 may enable the guide shaft 131 to remain in position, facilitating the positioning of the top plate 13.

When the reflector needs to be folded, an operator rotates the two auxiliary pins to make the two auxiliary pins away from each other, so as to drive the top disc 13 to rotate reversely. During the reverse rotation of the top plate 13, the guide shaft 131 moves along the flat section 1223 of the guide rail 122 in the reverse direction toward the first end 1221, and the top plate 13 moves away from the bottom plate 11. The hinge end 21 is subjected to a reduced turning moment and the hinge end 21 is turned in the opposite direction to the initial position. The pivot 24 is rotated reversely by the pivot 21, the pivot 24 moves upward along the shaft groove 112, and the contact position of the pivot 21 and the pressure plate 17 moves from inside to outside along the pressure plate 17 until the umbrella rib 20 is completely folded.

The chuck assembly 10 of the reflector can prevent an operator from using a large force to support each umbrella rib 20, and the umbrella ribs 20 can be supported by rotating the top plate 13. When the umbrella ribs 20 are folded, the top plate 13 is rotated in the reverse direction, so that the pressing and holding limit of the umbrella ribs 20 can be released, and the umbrella ribs 20 are folded. Therefore, the chuck assembly 10 of the reflector can avoid the laborious operation of operators, is convenient to operate and improves the use convenience of the reflector.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.