阅读说明：本技术 一种器件承放区域定位结构 (Positioning structure for device placing area ) 是由 伍志勇 于 2020-12-11 设计创作，主要内容包括：一种器件承放区域定位结构,包括左右侧板,左右侧板之间设有承放装置,承放装置包括前中后横杆伸缩组件,前后横杆伸缩组件上分别横向活动有前后活动件,中横杆伸缩组件上设有中定位件、以及横向活动有中活动件,前中后活动件之间设有连杆；中横杆伸缩组件、中定位件、中活动件通过连杆同步纵向滑动在前后横杆伸缩组件之间,并至少在受力时通过中定位件和/或中活动件定位支承在左右侧板的左右支承部上；前中后横杆伸缩组件、前中后活动件在活动时相互之间形成一个以上承放区域；中定位件与前和/或后活动件之间设有定位配合部；器件承托式放置在承放区域上、且承放在其中一个承放区域时,中定位件与前或后活动件之间通过定位配合部相互定位配合。(A device bearing area positioning structure comprises a left side plate and a right side plate, a bearing device is arranged between the left side plate and the right side plate, the bearing device comprises a front, middle and rear cross rod telescopic assembly, a front moving part and a rear moving part are respectively and transversely movable on the front and rear cross rod telescopic assembly, a middle positioning part and a middle moving part are arranged on the middle cross rod telescopic assembly, and a connecting rod is arranged between the front, middle and rear moving parts; the middle cross bar telescopic component, the middle positioning piece and the middle moving piece synchronously and longitudinally slide between the front cross bar telescopic component and the rear cross bar telescopic component through the connecting rod, and are positioned and supported on the left supporting part and the right supporting part of the left side plate and the right side plate through the middle positioning piece and/or the middle moving piece at least when stressed; the front middle rear cross bar telescopic component and the front middle rear movable part form more than one bearing area when moving; a positioning matching part is arranged between the middle positioning piece and the front and/or rear movable piece; when the device is placed on the bearing area in a bearing way and is placed in one bearing area, the middle positioning piece and the front or rear movable piece are mutually positioned and matched through the positioning matching part.)

1. The utility model provides a regional location structure is put to device, includes curb plate (1) of controlling the setting, its characterized in that: the lower parts of the left side plate and the right side plate (1) are respectively provided with a left supporting part and a right supporting part (3), a bearing device is arranged between the left supporting part and the right supporting part (3), the bearing device comprises at least three front, middle and rear cross rod telescopic assemblies which are arranged in a front-middle-rear manner and can be transversely positioned and moved, wherein a front movable part and a rear movable part (5) are respectively transversely moved on the front and rear cross rod telescopic assemblies (X), a middle positioning part (18) and a middle movable part (28) are arranged on the middle cross rod telescopic assemblies (Z), and a connecting rod is also arranged between the front;

the middle cross bar telescopic component (Z), the middle positioning piece (18) and the middle moving piece (28) synchronously and longitudinally slide between the front cross bar telescopic component and the rear cross bar telescopic component (X) through connecting rods, and are positioned and supported on the left supporting part and the right supporting part (3) through the middle positioning piece (18) and/or the middle moving piece (28) at least when stressed;

the front, middle and rear cross bar telescopic components and the front, middle and rear movable parts mutually form more than one placeable device (8) and a bearing area (Y) with adjustable longitudinal and/or transverse dimensions when moving; wherein, a positioning matching part is arranged between the middle positioning piece (18) and the front and/or rear movable piece (5);

when the device (8) is placed on the bearing area (Y) in a bearing manner and is placed in one bearing area (Y), the middle positioning piece (18) and the front or rear movable piece (5) are mutually positioned and matched through the positioning and matching part.

2. The device placement area positioning structure of claim 1, wherein: the positioning matching part comprises a side positioning and leaning position (40) which is arranged on the front side and/or the rear side of the front and/or rear movable element (5) and a middle positioning and leaning position (41) which is arranged on the front side and/or the rear side of the middle movable element (28) respectively;

the intermediate positioning abutment (41) slides synchronously with the middle moving part (28) in the longitudinal direction and cooperates with the lateral positioning abutment (40) of the front or rear moving part (5) when the component (8) is placed in one of the receiving areas (Y) in a supporting manner.

3. The device placement area positioning structure of claim 2, wherein: the side positioning and leaning positions (40) are integrally formed or are arranged on the front side and/or the rear side of the front and/or rear movable piece (5) in a split mode and extend towards the direction of the middle movable piece (28); the middle positioning and leaning position (41) is integrally formed or separately arranged on the front side and/or the rear side of the middle moving part (28) and extends towards the direction of the front and/or the rear moving part (5).

4. The device placement area positioning structure of claim 3, wherein: the side positioning and leaning positions (40) are provided with at least two parts which respectively extend towards the direction of the middle moving part (28) integrally to the front side and the rear side of the front moving part (5) and the rear moving part (5); the middle positioning and leaning positions (41) are provided with at least two parts which respectively extend towards the front and back moving parts (5) and are integrally arranged at the front side and the back side of the middle moving part (28); when the device (8) is placed in one of the bearing areas (Y) in a bearing manner, the middle movable part (28) is positioned on the lateral positioning position (40) of the front or rear movable part (5) through the middle positioning position (41).

5. The device placement area positioning structure of claim 2, wherein: the upper parts of the front, middle and rear movable pieces are respectively provided with a clamping part (9), and the lower parts of the front, middle and rear movable pieces are respectively provided with an inserting positioning part (10); the connecting rods comprise upper connecting rods (6) and lower connecting rods (7), the upper connecting rods (6) are clamped on the clamping portions (9), and the lower connecting rods (7) are inserted on the inserting positioning portions (10); the middle cross rod telescopic component (Z), the middle positioning piece (18) and the middle movable piece (28) synchronously and longitudinally slide between the front cross rod telescopic component and the rear cross rod telescopic component (X) through the matching of the upper connecting rod (6) and the lower connecting rod (7).

6. The device placement area positioning structure of claim 5, wherein: an upper space and a lower space are formed between the upper connecting rod (6) and the lower connecting rod (7), and the upper connecting rod and the lower connecting rod are respectively provided with an upper supporting part and a lower bearing part;

at least two side positioning parts (30) are respectively arranged at the upper and lower positions of the front side and/or the rear side of the front and rear movable pieces (5) at intervals; at least two middle positioning parts (31) are respectively arranged at the upper and lower positions of the front side and/or the rear side of the middle moving part (28) at intervals, and the at least two middle positioning parts (31) synchronously and longitudinally slide along with the middle moving part (28);

when the device (8) is placed in the bearing area (Y), the upper and lower positions of the front and rear side parts of the device are respectively positioned on the at least two side positioning parts (30) and/or the at least two middle positioning parts (31) in the front and rear direction, the left and right side parts of the device are respectively positioned on the upper supporting part of the upper connecting rod (6) in the left and right direction, and the bottom supporting type positioning support is arranged on the lower supporting part of the lower connecting rod (7).

7. The device placement area positioning structure as claimed in claim 6, wherein: the movable side positioning leaning position (40) and the side positioning part (30) are integrally formed or are arranged in a split mode, and the middle positioning leaning position (41) and the middle positioning part (31) are integrally formed or are arranged in a split mode;

the front, middle and rear movable pieces transversely slide on the front, middle and rear cross rod telescopic assemblies and drive the side positioning and leaning positions (40), the middle positioning and leaning positions (41), the upper connecting rod (6), the lower connecting rod (7), the upper supporting portion, the lower supporting portion, the side positioning portions (30) and the middle positioning portions (31) to synchronously transversely slide on the front, middle and rear cross rod telescopic assemblies so as to adjust the transverse size of the supporting and placing area (Y).

8. The device placement area positioning structure of claim 5, wherein: the upper and lower positions of the front and rear moving pieces (5) are respectively provided with an upper front and rear limiting part (11) and a lower front and rear limiting part (12); the front end and the rear end of the upper connecting rod (6) are respectively limited and arranged on the upper front limiting part and the lower rear limiting part (11); the front end and the rear end of the lower connecting rod (7) are respectively arranged on the lower front limiting part and the lower rear limiting part (12) in a limiting way;

the middle cross bar telescopic component (Z), the middle positioning piece (18) and the middle moving piece (28) longitudinally slide between the front and rear cross bar telescopic components (X) through the matching of the upper connecting rod (6) and the lower connecting rod (7), and are positioned and supported on the left and right supporting parts (3) through the middle positioning piece (18) and/or the middle moving piece (28) at least when stressed, so as to position and/or adjust the longitudinal size of the bearing area (Y).

9. The device placement region positioning structure according to any one of claims 1 to 8, wherein: the sliding rail assembly (2) is further included; the left and right supporting parts (3) are respectively provided with a leaning part (4); the side plate (1) is detachably arranged on the sliding rail component (2), and when the sliding rail component and the sliding rail component are assembled, the sliding rail component (2) is leaned on the inner side of the leaning part (4);

the front and rear cross bar telescopic assemblies (X) respectively comprise a middle cross bar (13) and side cross bars (14) arranged on the left and right sides; the outer ends of the left and right lateral cross rods (14) are respectively provided with lateral positioning pieces (15), the lateral positioning pieces (15) are respectively and fixedly supported on the left and right supporting parts (3) and/or the sliding rail assembly (2), and the inner ends of the left and right lateral cross rods (14) are respectively in positioning type sliding sleeve joint with the two ends of the middle cross rod (13);

the middle cross bar telescopic component (Z) comprises a middle movable bar (16) and side movable bars (17) arranged on the left and right; the outer ends of the left and right movable rods (17) are respectively provided with a middle positioning piece (18) and are respectively supported on the left and right supporting parts (3) and/or the sliding rail assembly (2) through the middle positioning piece (18) in a longitudinal sliding and/or positioning mode, and the inner ends of the left and right movable rods (17) are respectively sleeved with the two ends of the middle movable rod (16) in a positioning mode in a sliding mode.

10. The device placement area positioning structure as claimed in claim 9, wherein: the left and right supporting parts (3) are respectively provided with a left base and a right base (19), the inner sides of the left and right bases (19) respectively extend towards the inner sides of the side plates (1) to be provided with left and right base bearing parts (20), and the left and right supporting parts (3) and the slide rail assembly (2) are respectively supported by the left and right base bearing parts (20); the left and right lateral cross bars (14) are respectively and fixedly supported on the left and right base bearing parts (20) through lateral positioning pieces (15); the left and right movable rods (17) are respectively supported on the left and right base bearing parts (20) through a middle positioning piece (18) in a longitudinally sliding and/or positioning way;

after being positioned, the device (8) is positioned and acted on the left base bearing part and the right base bearing part (20) through the side positioning piece (15), and/or the middle positioning piece (18), and/or the front movable piece (5), and/or the middle movable piece (28), and is supported on the left supporting part and the right supporting part (3) and the sliding rail component (2) through the left base bearing part and the right base bearing part (20).

Technical Field

The invention relates to a device placing region positioning structure.

Background

Chinese patent document No. CN111086803A discloses a drawer-type hidden trash can in 5/1/2020, which comprises a trash can, a flat plate, a drawer guide rail and a connecting device, wherein the connecting device is either an L-shaped corner brace or a batten. The structure is characterized in that the garbage can, the flat plate and the drawer guide rail are combined into a whole, and the garbage can is hidden in an empty space below a bottom plate of the furniture and is pulled out when in use, so that two defects of stumbling and unsightly of the garbage can placed in a room to people are eliminated; however, the space in the kitchen is different in size, and the size of the drawer is designed according to the space in the kitchen, meanwhile, the sizes of the garbage cans are different, the drawer of the structure has fixed size and can only be used for concealing the garbage cans with single size, the use limitation is larger, and meanwhile, the garbage can is positioned on the flat plate through the extending edge of the upper side part when being placed, the flexibility is poorer, and the force of the garbage can be completely acted on the extending edge at the upper part of the garbage can when being stressed, so that the extending edge is broken and damaged, the garbage can also have the problem of falling when being serious, the bearing stability of the garbage can is influenced, and the garbage can occupies a very large space inside the drawer after being placed, so that the usable space inside the drawer is very little, if the drawer is adjustable, the garbage can cannot be stably placed due to the fact that the adjusting position cannot be located, and the using requirements of users cannot be met. Therefore, further improvements are necessary.

Disclosure of Invention

The invention aims to provide a device bearing area positioning structure to overcome the defects that in the prior art, a drawer is fixed in size, only a device with a single size can be borne, the space utilization rate is low, and the stability of bearing the device is poor.

According to the regional location structure of putting of a device design of this purpose, including controlling the curb plate that sets up, its characterized in that: the lower parts of the left side plate and the right side plate are respectively provided with a left supporting part and a right supporting part, a bearing device is arranged between the left supporting part and the right supporting part, the bearing device comprises at least three front, middle and rear cross rod telescopic assemblies which are arranged in the front, middle and rear and can be transversely positioned and moved, wherein the front and rear cross rod telescopic assemblies respectively transversely move to form a front moving part and a rear moving part, the middle cross rod telescopic assemblies are provided with middle positioning parts and transversely move to form a middle moving part, and a connecting rod is further arranged between the.

The middle cross rod telescopic component, the middle positioning piece and the middle moving piece synchronously and longitudinally slide between the front cross rod telescopic component and the rear cross rod telescopic component through the connecting rod, and are positioned and supported on the left supporting part and the right supporting part through the middle positioning piece and/or the middle moving piece at least when stressed.

The front, middle and rear cross bar telescopic components and the front, middle and rear movable parts form more than one device capable of being placed and a bearing area capable of adjusting the longitudinal and/or transverse size when moving; wherein, a positioning matching part is arranged between the middle positioning piece and the front and/or rear movable piece.

When the device is placed on the bearing area in a bearing way and is placed in one of the bearing areas, the middle positioning piece and the front or rear movable piece are mutually positioned and matched through the positioning matching part.

The positioning matching part comprises a side positioning leaning position and a middle positioning leaning position, wherein the side positioning leaning position is arranged on the front side and/or the rear side of the front movable part and/or the rear movable part respectively, and the middle positioning leaning position is arranged on the front side and/or the rear side of the middle movable part.

The middle positioning leaning position follows the middle moving part to synchronously and longitudinally slide, and is mutually positioned and matched with the side positioning leaning positions of the front or rear moving part when the device is placed in one bearing area in a bearing way.

The side positioning and leaning positions are integrally formed or are separately arranged on the front side and/or the rear side of the front and/or rear movable pieces and extend towards the direction of the middle movable piece; the middle positioning and leaning position is integrally formed or is separately arranged on the front side and/or the rear side of the middle moving part and extends towards the direction of the front and/or the rear moving part.

The side positioning leaning position is provided with at least two parts which respectively extend towards the direction of the middle moving part integrally to the front side and the rear side of the front moving part and the rear moving part; the middle positioning and leaning position is provided with at least two middle positioning and leaning parts which respectively extend towards the front and back moving parts integrally at the front side and the back side of the middle moving part; when the device is placed in one of the bearing areas in a bearing mode, the middle moving part is positioned on the side positioning and leaning position of the front or rear moving part through the middle positioning and leaning position.

The upper parts of the front, middle and rear movable pieces are respectively provided with a clamping part, and the lower parts of the front, middle and rear movable pieces are respectively provided with an inserting positioning part; the connecting rod comprises an upper connecting rod and a lower connecting rod, the upper connecting rod is clamped on the clamping part, and the lower connecting rod is inserted on the inserting positioning part; the middle cross rod telescopic component, the middle positioning piece and the middle moving piece synchronously and longitudinally slide between the front cross rod telescopic component and the rear cross rod telescopic component through the matching of the upper connecting rod and the lower connecting rod.

An upper space and a lower space are formed between the upper connecting rod and the lower connecting rod, and the upper connecting rod and the lower connecting rod are respectively provided with an upper supporting part and a lower bearing part.

At least two side positioning parts are respectively arranged at the upper and lower positions of the front side and/or the rear side of the front and rear movable pieces at intervals; the upper and lower positions of the front side and/or the rear side of the middle moving part are respectively provided with at least two middle positioning parts at intervals, and the at least two middle positioning parts synchronously and longitudinally slide along with the middle moving part.

When the device is placed in the bearing area, the upper and lower positions of the front and rear side parts of the device are respectively positioned front and back on the at least two side positioning parts and/or the at least two middle positioning parts, the left and right side parts of the device are respectively positioned left and right on the upper supporting part of the upper connecting rod, and the bottom bearing type positioning support is arranged on the lower supporting part of the lower connecting rod.

The movable side positioning leaning position and the side positioning part are integrally formed or are arranged in a split mode, and the middle positioning leaning position and the middle positioning part are integrally formed or are arranged in a split mode.

The front, middle and rear moving parts transversely slide on the front, middle and rear cross rod telescopic assemblies and drive the side positioning leaning position, the middle positioning leaning position, the upper connecting rod, the lower connecting rod, the upper supporting part, the lower supporting part, the side positioning part and the middle positioning part to synchronously transversely slide on the front, middle and rear cross rod telescopic assemblies during transverse sliding so as to adjust the transverse size of the supporting area.

The upper and lower positions of the front and rear movable pieces are respectively provided with an upper front and rear limiting part and a lower front and rear limiting part; the front end and the rear end of the upper connecting rod are respectively arranged on the upper front limiting part and the lower rear limiting part in a limiting way; the front end and the rear end of the lower connecting rod are respectively arranged on the lower front limiting part and the lower rear limiting part in a limiting way.

The middle cross rod telescopic assembly, the middle positioning piece and the middle moving piece longitudinally slide between the front cross rod telescopic assembly and the rear cross rod telescopic assembly through the matching of the upper connecting rod and the lower connecting rod, and are positioned and supported on the left supporting part and the right supporting part through the middle positioning piece and/or the middle moving piece at least when stressed, so that the longitudinal size of the bearing area is positioned and/or adjusted.

The structure also comprises a sliding rail component; the left and right supporting parts are respectively provided with a depending part; the side plates are detachably arranged on the sliding rail assembly, and when the side plates and the sliding rail assembly are assembled, the sliding rail assembly depends on the inner side of the depending part.

The front and rear cross rod telescopic assemblies respectively comprise a middle cross rod and side cross rods arranged on the left and right sides; the outer ends of the left and right side cross rods are respectively provided with a side positioning piece and are respectively fixedly supported on the left and right supporting parts and/or the slide rail assembly through the side positioning pieces, and the inner ends of the left and right side cross rods are respectively in positioning type sliding sleeve joint with the two ends of the middle cross rod.

The middle cross rod telescopic component comprises a middle movable rod and side movable rods arranged on the left and right; the outer ends of the left and right movable rods are respectively provided with a middle positioning piece and are respectively supported on the left and right supporting parts and/or the sliding rail assembly through the longitudinal sliding and/or positioning of the middle positioning piece, and the inner ends of the left and right movable rods are respectively sleeved with the two ends of the middle movable rod in a positioning type sliding manner.

The left and right supporting parts are respectively provided with a left base and a right base, the inner sides of the left and right bases respectively extend towards the inner sides of the side plates and are respectively supported on the left and right supporting parts and the slide rail assembly through the left and right base bearing parts; the left and right lateral cross rods are respectively and fixedly supported on the left and right base bearing parts through lateral positioning pieces; the left and right movable rods are respectively supported on the left and right base bearing parts through the middle positioning piece in a longitudinally sliding and/or positioning way.

After the device is positioned, the device is positioned and acted on the left and right base bearing parts through the side positioning part and/or the middle positioning part and/or the front and rear movable part and/or the middle movable part, and then is supported on the left and right supporting parts and the sliding rail assembly through the left and right base bearing parts.

Through the improvement of the structure, compared with the prior art, the invention has the following advantages:

1. the left and right supporting parts are respectively arranged at the lower parts of the left and right side plates, a left base and a right base are placed between the left and right supporting parts, at least three front, middle and rear cross rod telescopic assemblies are arranged on the left and right bases, positioning parts are respectively arranged at two ends of the front, middle and rear cross rod telescopic assemblies and are respectively positioned and/or longitudinally slide on the left and right bases, the left and right bases are respectively supported on the left and right supporting parts and the left and right slide rail assemblies, so that the bearing and placing device can be conveniently, efficiently and flexibly placed between the left and right side plates, meanwhile, the bearing and placing device can well apply bearing and placing force to the left and right side plates and the left and right slide rail assemblies when bearing and placing devices, bearing and placing stability of the bearing and placing device is improved, and users can also freely detach or place the bearing and placing device.

2. The front, middle and rear cross bar telescopic components are respectively provided with a movable part which moves transversely, the upper and lower positions of the movable part are respectively provided with a connecting rod, wherein the front, middle and rear cross bar telescopic components and the movable part mutually form more than one bearing area capable of adjusting the longitudinal and transverse dimensions when moving, so that a user can adjust the transverse and longitudinal dimensions of the bearing area when using the device, thereby enabling devices with different sizes and/or the same size to be randomly positioned and placed on the placing areas with different sizes and/or the same size and/or different positions so as to meet various placing requirements of various devices, thereby effectively avoiding the problems that the drawer in the prior art has fixed size and can only carry or fix the carrying position of a device with single size, the flexibility of bearing and placing the device is improved, and great convenience is provided for bearing and placing the device by a user.

3. When the device is placed in the bearing area, the upper and lower positions of the front and rear side parts of the device are respectively positioned front and rear and act on at least two side positioning parts of the front and rear moving parts and/or at least two middle positioning parts of the middle moving part, the left and right side parts of the device are respectively positioned left and right and act on the upper supporting part of the upper connecting rod, thereby providing effective supporting and positioning for the outer side part of the device, preventing the device from tilting during working, positioning and supporting the bottom of the device on the lower bearing part of the lower connecting rod, because the device adopts the supporting type positioning and bearing reason, the device can apply all force on the left base, the right base, the left bearing part, the right bearing part and the left sliding rail component and the right sliding rail component when stressed, thereby carry out effectual bearing to the device and place, not only can improve the bearing capacity of device, avoid it to appear the problem that fracture damaged or dropped in the during operation in addition to guarantee the bearing of device and put stability.

4. When the device bearing type is placed in one of the bearing areas, the middle moving part can be positioned in front of or behind the side of the moving part through the middle positioning and leaning on the positioning, so that the middle cross rod telescopic assembly can be positioned on the front or rear cross rod telescopic assembly, the problem that the middle cross rod telescopic assembly cannot slide longitudinally twice when the device is placed is guaranteed, the device can be stably placed, and the problems of shaking and displacement of the device in the sliding process of the sliding rail assembly are avoided.

5. The two ends of the front and rear cross rod telescopic assemblies are fixedly connected with the left and right bases respectively, and the front and rear cross rod telescopic assemblies can slide transversely, so that the transverse size of the whole bearing and placing device can be adjusted, the bearing and placing device can be suitable for drawers with different inner widths to use, and the use flexibility and the application range of the bearing and placing device are improved.

6. Well horizontal pole subassembly that stretches out and draws back can longitudinal sliding between the subassembly that stretches out and draws back in the front and back horizontal pole, not only makes the device that holds and put the device and can adapt to the different degree of depth place, can also carry out longitudinal sliding to the flexible subassembly of centering horizontal pole when a plurality of devices dismouting simultaneously to the position of transferring out supplies the device to carry out the dismouting, convenience of customers' use.

Comprehensively, it has simple structure reasonable, and the assembly is swift, convenient, low in manufacturing cost, and the device is put characteristics such as disguise good, stability is good, and application range is wide, the flexibility height, and the practicality is strong.

Drawings

Fig. 1 and fig. 2 are schematic views of an assembly structure of a slide rail assembly, a side plate and a supporting device according to an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of a device placement and positioning according to an embodiment of the invention.

Fig. 5 and 6 are schematic views of an assembly structure of the supporting device according to an embodiment of the invention.

Fig. 7 is an enlarged schematic view of a portion B in fig. 5.

Fig. 8 and 9 are schematic exploded structural views of a supporting device according to an embodiment of the invention.

Fig. 10 and 11 are schematic structural views of a front movable member and a rear movable member according to an embodiment of the present invention.

Fig. 12 and 13 are schematic structural views of a middle movable member according to an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1-13, the device bearing area positioning structure comprises a left side plate 1 and a right side plate 1, wherein a left support part 3 and a right support part 3 are respectively arranged at the lower parts of the left side plate 1 and the right side plate 1, a bearing device is arranged between the left support part 3 and the right support part 3, the bearing device comprises at least three front, middle and rear cross rod telescopic assemblies which are arranged in a front, middle and rear manner and can be transversely positioned and moved, a front moving part 5 and a rear moving part 5 are respectively transversely moved on the front and rear cross rod telescopic assemblies X, a middle positioning part 18 and a middle moving part 28 are arranged on the middle cross rod telescopic assembly Z, and a.

The middle cross bar telescopic assembly Z, the middle positioning piece 18 and the middle movable piece 28 synchronously slide longitudinally between the front and rear cross bar telescopic assemblies X through the connecting rod, and are positioned and supported on the left and right supporting parts 3 through the middle positioning piece 18 and/or the middle movable piece 28 at least when stressed.

The front, middle and rear cross bar telescopic components and the front, middle and rear movable parts form more than one device 8 capable of being placed and a bearing area Y capable of adjusting the longitudinal and/or transverse size when moving; wherein, a positioning matching part is arranged between the middle positioning piece 18 and the front and/or rear movable piece 5.

When the device 8 is placed on the bearing area Y in a bearing manner and is placed in one of the bearing areas Y, the middle positioning piece 18 and the front or rear movable piece 5 are mutually positioned and matched through the positioning and matching part.

Specifically, the detent engagement includes a side detent 40 disposed on a front side and/or a rear side of the front and/or rear movable member 5, and a middle detent 41 disposed on a front side and/or a rear side of the middle movable member 28, respectively.

The intermediate abutment 41 follows the synchronous longitudinal sliding movement of the middle movable part 28 and cooperates in a mutually aligned manner with the lateral abutment 40 of the front or rear movable part 5 when the device 8 is placed in bearing contact in one of the bearing areas Y.

The side positioning leaning position 40 is integrally formed or separately arranged on the front side and/or the rear side of the front and/or rear movable piece 5 and extends towards the direction of the middle movable piece 28; the middle positioning and leaning part 41 is integrally formed or separately arranged on the front side and/or the rear side of the middle moving part 28 and extends towards the direction of the front and/or the rear moving part 5.

The side positioning leaning positions 40 are provided with at least two and respectively extend integrally to the front side and the rear side of the front and rear movable pieces 5 in the direction of the middle movable piece 28; the middle positioning and leaning position 41 is provided with at least two parts which respectively extend towards the front and back moving parts 5 and are integrally arranged on the front side and the back side of the middle moving part 28; when the device 8 is placed in one of the bearing areas Y, the middle movable part 28 is positioned by means of the intermediate positioning points 41 on the lateral positioning points 40 of the front or rear movable part 5.

The upper parts of the front, middle and rear moving pieces are respectively provided with a clamping part 9, and the lower parts of the front, middle and rear moving pieces are respectively provided with an inserting positioning part 10; the connecting rods comprise upper connecting rods 6 and lower connecting rods 7, the upper connecting rods 6 are clamped on the clamping portions 9, and the lower connecting rods 7 are inserted on the inserting positioning portions 10; the middle cross bar telescopic assembly Z, the middle positioning piece 18 and the middle movable piece 28 synchronously and longitudinally slide between the front cross bar telescopic assembly X and the rear cross bar telescopic assembly X through the matching of the upper connecting rod 6 and the lower connecting rod 7.

An upper space and a lower space are formed between the upper connecting rod 6 and the lower connecting rod 7, and the upper supporting part and the lower supporting part are respectively arranged on the upper connecting rod and the lower connecting rod.

At least two side positioning parts 30 are respectively arranged at the upper and lower positions of the front side and/or the rear side of the front and rear movable pieces 5 at intervals; at least two middle positioning parts 31 are respectively arranged at the upper and lower positions of the front side and/or the rear side of the middle moving part 28 at intervals, and the at least two middle positioning parts 31 synchronously and longitudinally slide along with the middle moving part 28.

When the device 8 is placed in the bearing area Y, the upper and lower positions of the front and rear side parts of the device respectively act on the at least two side positioning parts 30 and/or the at least two middle positioning parts 31 in a front-back positioning mode, the left and right side parts respectively act on the upper supporting part of the upper connecting rod 6 in a left-right positioning mode, and the bottom supporting type positioning support is arranged on the lower supporting part of the lower connecting rod 7.

The movable side positioning rest 40 and the side positioning part 30 are integrally formed or separately arranged, and the middle positioning rest 41 and the middle positioning part 31 are integrally formed or separately arranged.

The front, middle and rear movable members transversely slide on the front, middle and rear cross bar telescopic assemblies and drive the side positioning leaning position 40, the middle positioning leaning position 41, the upper connecting rod 6, the lower connecting rod 7, the upper supporting part, the lower supporting part, the side positioning part 30 and the middle positioning part 31 to synchronously transversely slide on the front, middle and rear cross bar telescopic assemblies during transverse sliding so as to adjust the transverse size of the supporting area Y.

Wherein, the extension size of the side positioning leaning position 40 is larger than the size of the side positioning part 30; the intermediate positioning portion 41 extends to a size larger than that of the intermediate positioning portion 31.

Meanwhile, the side positioning and leaning position 40, the side positioning portion 30, the middle positioning and leaning position 41 and the middle positioning portion 31 can be adjusted with adjusting pieces, and the side positioning and leaning position 40, the side positioning portion 30, the middle positioning and leaning position 41 and the middle positioning portion 31 can be telescopically moved on the front and rear movable pieces 5 and the middle movable piece 28 through the adjusting pieces, so that the longitudinal size fine adjustment of more than one bearing area Y can be realized.

The upper and lower positions of the front and rear moving pieces 5 are respectively provided with an upper front and rear limiting part 11 and a lower front and rear limiting part 12; the front end and the rear end of the upper connecting rod 6 are respectively limited and arranged on the upper front limiting part 11 and the lower front limiting part 11; the front end and the rear end of the lower connecting rod 7 are respectively arranged on the lower front limiting part and the lower rear limiting part 12 in a limiting way.

The middle cross bar telescopic assembly Z, the middle positioning piece 18 and the middle movable piece 28 longitudinally slide between the front cross bar telescopic assembly X and the rear cross bar telescopic assembly X through the matching of the upper connecting rod 6 and the lower connecting rod 7, and are positioned and supported on the left supporting part 3 and the right supporting part 3 through the middle positioning piece 18 and/or the middle movable piece 28 at least when stressed, so as to position and/or adjust the longitudinal dimension of the bearing area Y.

The structure also comprises a slide rail component 2; the left and right supporting parts 3 are respectively provided with a leaning part 4; the side plate 1 is detachably arranged on the sliding rail component 2, and when the sliding rail component 2 and the sliding rail component 2 are assembled, the sliding rail component is leaned on the inner side of the leaning part 4.

The front and rear cross bar telescopic assemblies X respectively comprise a middle cross bar 13 and side cross bars 14 arranged left and right; the outer ends of the left and right side cross rods 14 are respectively provided with a side positioning piece 15 and are respectively fixedly supported on the left and right supporting parts 3 and/or the slide rail assembly 2 through the side positioning piece 15, and the inner ends of the left and right side cross rods 14 are respectively in positioning type sliding sleeve connection with the two ends of the middle cross rod 13.

The middle cross bar telescopic component Z comprises a middle movable bar 16 and side movable bars 17 arranged on the left and right; the outer ends of the left and right movable rods 17 are respectively provided with a middle positioning piece 18, and are respectively supported on the left and right supporting parts 3 and/or the sliding rail assembly 2 through the middle positioning piece 18 in a longitudinal sliding and/or positioning way, and the inner ends of the left and right movable rods 17 are respectively sleeved with the two ends of the middle movable rod 16 in a positioning way in a sliding way.

The left and right supporting parts 3 are respectively provided with a left and right base 19, the inner sides of the left and right bases 19 are respectively provided with a left and right base receiving part 20 extending towards the inner side of the side plate 1 and are respectively supported on the left and right supporting parts 3 and the slide rail assembly 2 through the left and right base receiving parts 20; the left and right cross bars 14 are respectively fixed and supported on the left and right base receiving parts 20 through the side positioning pieces 15; the left and right movable rods 17 are supported on the left and right base receiving parts 20 by the middle positioning member 18 in a longitudinally sliding and/or positioning manner, respectively.

After positioning, the device 8 is positioned by the side positioning element 15, and/or the middle positioning element 18, and/or the front and rear movable element 5, and/or the middle movable element 28 to act on the left and right base receiving portions 20, and is supported by the left and right support portions 3 and the slide rail assembly 2 through the left and right base receiving portions 20.

The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.