Supporting plate assembly and seat

Abstract

The utility model discloses a plurality of supporting plate components and a seat, which comprise a supporting plate and a connecting component which is arranged on the supporting plate and is used for being detachably mounted with the seat, and the connecting component can be detachably mounted with the seat on the premise of not damaging or changing the structure of an office chair or an ergonomic chair. A seated person can selectively install the supporting plate assembly on the chair body as an integral module according to the choice of the seated person, so that the seated person can work or rest independently in the state of leaving the table, and the use requirement of the seated person is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat, especially a kind of supporting plate subassembly and seat. BACKGROUND

[0002] The seat structure in daily life is various, and the common office chair or ergonomic chair for office is used, and the sitter can sit on the office chair or ergonomic chair to work in front of the table;In addition, in the spacious conference room or training place, conference chair and training chair with supporting plate can also be frequently seen, the supporting plate is also called writing board or small table board, and can support the arm of user or office articles;For example, in the conference chair patent with announcement number CN208017230, the conference chair includes writing board and multiple chair legs, the writing board is fixed with fixed base at right lower end, the bottom end of fixed base is fixed with fixed rod, the fixed rod is sleeved on the first chair leg, and is fixed by bolt, so that the writing board can stably support office articles, and it is also convenient for user to make notes.

[0003] For example, in the conference chair patent with announcement number CN220069225, the seat includes seat, overhead foot support and supporting frame, supporting pipe is arranged between seat and overhead foot support, pipe sleeve is arranged outside supporting pipe, and writing supporting frame is installed at one end of writing supporting frame, so as to facilitate user to make records or place office articles.

[0004] With the development of society, office demand is more diversified, and some home office sitters need to work more flexibly and comfortably in the state of leaving the table, for example, the sitter can place keyboard or tablet computer on the supporting plate and work in a comfortable supine position;But lacking the support of table, the sitter can only rely on leg support office articles or tablet computer, and the supporting plate on the above training chair needs to be pre-installed on the chair body.

[0005] Therefore, a supporting plate subassembly that can be detachably installed on office chair is needed, which can be installed on the chair body without changing or damaging the chair structure when the supporting plate is needed, and the supporting plate subassembly can be completely removed from the chair body when it is not needed, so as to meet the use needs of sitters in different situations. SUMMARY

[0006] The utility model provides multiple supporting plate subassemblies and seats, which can be selectively installed on the chair body as a whole module without damaging or changing the structure of office chair or ergonomic chair according to the selection of sitters, so that the sitter can work or rest alone in the state of leaving the table, and the use needs of sitters are met.

[0007] The technical scheme of the utility model is realized as follows:

[0008] A kind of pallet assembly, including pallet and the connecting assembly for being detachably installed with seat and being arranged on pallet, connecting assembly includes the first clamping piece and the second clamping piece in the lower end of pallet, first clamping piece and second clamping piece form with the cooperation space between them, at least one of first clamping piece and second clamping piece can slide along the width direction of cooperation space and stay in corresponding position;

[0009] First clamping piece and / or second clamping piece slide and stay in corresponding position, to adjust the width of cooperation space in place.

[0010] As preferred, first clamping piece can slide along the width direction of cooperation space and stay in corresponding position, second clamping piece is relatively fixed with pallet.

[0011] As preferred, connecting assembly further includes the base fixed in the lower end of pallet, second clamping piece is fixedly connected on base;Base is equipped with the sliding slot extending along the width direction of cooperation space, first clamping piece is equipped with the sliding connection part matched with sliding slot, and sliding connection part is slidably connected in sliding slot.

[0012] As preferred, first clamping piece is equipped with the helical hole extending along the width direction of cooperation space, and connecting assembly further includes the driving member, and the driving screw of driving member is helically fitted in helical hole and can rotate in situ, the handle is connected to the outer end of driving screw, and rotating handle makes first clamping piece slide along the width direction of cooperation space and stay in corresponding position;The self-locking of helical fitting mode is formed to first clamping piece, to prevent first clamping piece from backfiring and causing clamping loose.

[0013] As preferred, driving screw includes limiting section, the helical section for cooperating with helical hole, limiting piece is connected on limiting section, and the width of limiting piece is greater than the width of helical section;Base is equipped with the first limiting part and the second limiting part corresponding to the position of limiting piece, and the two ends of limiting piece are respectively resisted by first limiting part and second limiting part, so that driving screw remains in situ when rotating.

[0014] As preferred, the upper end of pallet is equipped with the blocking part, and the blocking part protrudes upward from the upper end surface of pallet;Blocking part can block office articles on pallet from sliding off pallet.

[0015] As preferred, pallet includes pallet main body, and the extension of the rear end of pallet main body extends transversely outward, and the extension and the pallet main body form L-shaped structure, and connecting assembly is arranged at the lower end of extension;Extension can lengthen the length of front and back of pallet, so that, after connecting assembly is connected on seat, larger sitting space is formed between pallet main body and chair back.

[0016] A kind of pallet assembly, including pallet and the connecting assembly for being detachably installed with seat and being arranged on pallet, connecting assembly includes the first clamping piece and the second clamping piece in the lower end of pallet, first clamping piece and second clamping piece form cooperation space between them, at least one of first clamping piece and second clamping piece can rotate along the width direction of cooperation space;

[0017] First clamping piece and / or second clamping piece rotate and open outward to predetermined position, to adjust the width of cooperation space to position.

[0018] As preferred, the connecting assembly further includes a base fixed to the lower end of the pallet, and the first clamping piece and the second clamping piece are both hinged to the base and form two hinged ends, and a torsion spring is arranged at the hinged end to make the first clamping piece and the second clamping piece always have a restoring tendency.

[0019] As preferred, the second clamping piece is fixedly connected to the lower end of the pallet, and the first clamping piece and the second clamping piece are both provided with a hinged part, and the two hinged parts are hinged to form a hinged end, and a torsion spring is arranged at the hinged end to make the first clamping piece always have a restoring tendency.

[0020] As preferred, the connecting assembly further includes a base fixed to the lower end of the pallet, and the first clamping piece and the second clamping piece are both hinged to the base, and a tension spring is fixedly connected between the first clamping piece and the second clamping piece to make the first clamping piece and the second clamping piece always have a restoring tendency.

[0021] As preferred, the connecting assembly further includes a base fixed to the lower end of the pallet, and the first clamping piece and the second clamping piece are both hinged to the base, and the first clamping piece and the second clamping piece are both provided with an adjusting part, and an adjusting hole extending along the width direction of the cooperation space is arranged through the adjusting part, and an adjusting bolt is simultaneously arranged in the two adjusting holes, and a adjusting nut is threadedly connected to the tail of the adjusting bolt, and rotating the adjusting nut makes the two adjusting parts approach or move away from each other to adjust the width of the cooperation space.

[0022] A kind of pallet assembly, including pallet and the connecting assembly for being detachably installed with seat and being arranged on pallet, connecting assembly includes the first clamping piece and the second clamping piece in the lower end of pallet, first clamping piece and second clamping piece form cooperation space between them, at least one of first clamping piece and second clamping piece can be elastically deformed along the width direction of cooperation space under external force;

[0023] Under the action of external force, the first clamping member and / or the second clamping member are elastically deformed and outwardly spread to a predetermined position to adjust the width of the fitting space.

[0024] The tray assembly comprises a tray and a connecting assembly arranged on the tray and used for detachably mounting the tray to a seat, the connecting assembly comprising a sleeve member and a wedge-shaped sliding member, the sleeve member having a fitting space extending in a horizontal direction, and the wedge-shaped sliding member being slidingly connected to a lower end of the tray and corresponding to the fitting space.

[0025] The wedge-shaped sliding member is horizontally slid into the fitting space to a predetermined position to adjust the width of the fitting space.

[0026] Preferably, screw holes extending in the horizontal direction are arranged on the wedge-shaped sliding member, and the connecting assembly further comprises a driving member, which is a screw rod screw-coupled into the screw holes and rotatable in situ, and a hand wheel fixedly connected to an outer end of the screw rod, and the hand wheel is rotated to horizontally slide the wedge-shaped sliding member into the fitting space and stop at the corresponding position.

[0027] Preferably, a supporting seat is arranged at the lower end of the tray, a through hole is arranged on the supporting seat, the screw rod is inserted into the through hole, and two limiting nuts are screw-coupled to the screw rod and located at two ends of the supporting seat respectively, and the two limiting nuts abut against the two ends of the supporting seat respectively to keep the screw rod in situ when the screw rod is rotated.

[0028] The seat comprises a seat body and the tray assembly, and the tray is detachably mounted to the seat body through the connecting assembly.

[0029] Preferably, armrests are arranged on left and right sides of the seat body, and one of the armrests on the seat body is located in the adjusted fitting space to keep the tray fixed on the seat.

[0030] Preferably, the seat body comprises a seat back and a seat cushion, armrest supporting arms are connected to left and right sides of the seat back or left and right sides of the seat cushion, and the armrests are rotatably connected to top ends of the armrest supporting arms in the horizontal direction; under the action of external force, the tray can be rotated to the outside along the corresponding armrest to leave a standing-up space.

[0031] The beneficial effects of the present application are as follows:

[0032] The tray assembly in the present application does not need to change or damage the structure of the office chair or ergonomic chair when mounted to the seat, and does not affect the functions of the original office chair or ergonomic chair, so that the whole tray assembly can be mounted according to the use requirements of the seated person, and when the seated person needs to use the tray, the tray assembly is connected to the seat body through the connecting assembly, so that the seated person can leave the desk and work independently, and when the seated person does not need to use the tray, the tray assembly can be detached from the office chair and used independently, thereby meeting the various use requirements of the seated person.

[0033] The connecting assembly is a detachable clamping adjustment structure. When the tray assembly is installed on the armrest, the first clamping member and the second clamping member can clamp the armrests of different widths or thicknesses, so that the tray assembly is not limited by the width and thickness of the armrest and is suitable for most office chairs or ergonomic chairs on the market.

[0034] The clamping adjustment structure is flexible. The user can select the front and rear connection position between the connecting assembly and the armrest according to the body state, and adjust the sitting space between the tray and the backrest to the right position, so that the tray assembly is suitable for different sitting persons with different body states. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural diagram of the tray assembly and a cross-sectional view of the cup seat connection;

[0036] Figure 2 It is an exploded view of the tray assembly;

[0037] Figure 3 It is an exploded view of the cup seat and the plug-in seat;

[0038] Figure 4 It is an exploded view of the connecting assembly and a structural diagram of the base;

[0039] Figure 5 It is a structural diagram of the tray assembly arranged on the seat;

[0040] Figure 6 It is a cross-sectional view of the armrest in the matching space;

[0041] Figure 7 It is a side view when the tray assembly is kept horizontal;

[0042] Figure 8 It is a side view when the backrest is reclined and the tray assembly is inclined backward;

[0043] Figure 9 It is a diagram of the connecting assembly in Example 2;

[0044] Figure 10 It is a diagram of another structure of the connecting assembly in Example 2;

[0045] Figure 11 It is a diagram of the connecting assembly in Example 2, in which a tension spring is arranged between the first clamping member and the second clamping member;

[0046] Figure 12 It is a diagram of the connecting assembly in Example 2, in which an adjusting bolt is arranged between the first clamping member and the second clamping member;

[0047] Figure 13 It is a diagram of the connecting assembly in Example 3;

[0048] Figure 14Figure 1 is a cross-sectional view of the connection assembly of Example 4, with the armrest in the engaged position;

[0049] Figure 15 Figure 2 is a cross-sectional view of the connection assembly of Example 4, with the armrest in the disengaged position;

[0050] 1- tray, 2- detachable mounting module, 3- blocking part, 4- cover plate, 5- cup seat, 6- chair body, 7- sleeve part, 11- extension part, 12- counterbore, 13- insertion hole, 21- first clamping part, 21a- second clamping part, 22- engaging space, 23- base, 24- drive screw, 25- limiting part, 26- tension spring, 27- adjusting bolt, 28- adjusting nut, 31- latch, 51- insertion seat, 51a- insertion slot, 52- insertion part, 53- pen hole, 54- drainage hole, 61- armrest, 61a- armrest support arm, 62- seat, 63- backrest, 71- wedge-shaped sliding part, 72- support seat, 73- screw rod, 74- hand wheel, 75- guide rail, 76- limiting nut, 211- sliding connection part, 212- screw hole, 231- sliding groove, 511- arc-shaped guide surface, 512- avoiding slot, 521- arc-shaped engaging surface, 522- narrowing part, 232- insertion column, 233- insertion hole, 234- accommodating slot, 234a- first limiting part, 234b- second limiting part, 241- handle, 242- limiting section, 251- connecting slot, 711- wedge-shaped surface. DETAILED DESCRIPTION

[0051] In order to enable a more complete understanding of the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0053] The present application has a plurality of embodiments, and the specific embodiments are as follows:

[0054] Embodiment 1: as Figures 1-8As shown, the embodiment provides a tray assembly, which comprises a tray 1 and a connecting assembly arranged on the tray 1 and used for detachable mounting with a seat, the connecting assembly is equivalent to a detachable mounting module 2, the connecting assembly comprises a first clamping member 21 and a second clamping member 21a located at the lower end of the tray 1, a fitting space 22 is formed between the first clamping member 21 and the second clamping member 21a, and at least one of the first clamping member 21 and the second clamping member 21a can slide along the width direction of the fitting space 22 and stay at a corresponding position;

[0055] The first clamping member 21 and / or the second clamping member 21a slides and stays at a corresponding position to adjust the width of the fitting space 22.

[0056] Further, in the embodiment, the first clamping member 21 slides along the width direction of the fitting space 22, and the second clamping member 21a remains fixed, that is, the first clamping member 21 can slide along the width direction of the fitting space 22 and stay at a corresponding position, and the second clamping member 21a remains relatively fixed with the tray 1; specifically, the connecting assembly further comprises a base 23 fixed at the lower end of the tray 1, and the second clamping member 21a is fixedly connected to the base 23; wherein the base 23 is provided with a plurality of positioning holes, and the second clamping member 23 is provided with a positioning column which is inserted into the positioning hole and locked by a screw; the base 23 is provided with a sliding groove 231 extending along the width direction of the fitting space 22, the cross-sectional shape of the sliding groove 231 is T-shaped, the first clamping member 21 is provided with a sliding connection part 211 matched with the sliding groove 231, and the sliding connection part 211 is slidingly connected in the sliding groove 231 to adjust the width of the fitting space 22 between the first clamping member 21 and the second clamping member 21a in response to an external driving force.

[0057] Further, a seat is provided, which comprises a seat body 6 and the tray assembly, the seat body 6 comprises a seat cushion 62 and a seat back 63, and the tray 1 is detachably mounted on the seat body 6 through the connecting assembly; specifically, the seat body 6 is provided with an armrest 61 on each of the left and right sides, and the lower end of the armrest 61 is connected with an armrest support arm 61a which can be connected to the lower end of the seat cushion 62 or the seat back 63; in the embodiment, one of the armrests 61 on the seat body 6 is in the adjusted fitting space 22, so that the entire tray assembly is clamped and fixed on the corresponding armrest 61 to keep the tray 1 fixed on the seat; when the tray 1 is not needed, the tray assembly can be detached and the seat can be used alone, so as to meet various use requirements of the sitter.

[0058] Further, the chair back 63 can be rotated forward and backward in the embodiment, and the armrest support arm 61a is preferably connected to the chair back 63. When the tray assembly is connected to the corresponding armrest 61, and the chair back 63 is rotated backward, the tray 1 will also be inclined backward to adapt to the sitting posture of the user. The user can work in an upright sitting posture when the chair back 63 is upright, or the user can work in a supine position when the chair back 63 is reclined, in order to protect the spine. Compared with the use of the tray 1 in the upright sitting posture, the chair back 63 bears most of the pressure of the upper body of the user in the supine position, and the pressure on the spine of the user is greatly reduced, thereby protecting the spine of the user who uses the tray 1 for a long time.

[0059] Further, in order to ensure the user experience, the armrest 61 is connected to the top end of the corresponding armrest support arm 61a in the horizontal direction in the embodiment. Under the action of external force, the tray 1 can be rotated to the outside with the corresponding armrest 61 to leave a standing space, so that the user can stand up and leave the seat without disassembling the entire tray assembly, which is simple and convenient and improves the user experience of the tray assembly.

[0060] Further, after the width of the matching space 22 is adjusted, the first clamping part 21 and the second clamping part 21a need to form a clamping force and remain relatively fixed. Therefore, the first clamping part 21 is provided with a spiral hole 212 extending in the width direction of the matching space 22 in the embodiment. The connecting assembly further includes a driving part, which is a driving screw 24 that is screw-fitted in the spiral hole 212 and can rotate in place. The base 23 is provided with a penetrating hole 233, and the driving screw 24 is penetratingly arranged in the penetrating hole 233. The outer end of the driving screw 24 is connected with a handle 241. Rotating the handle 241 makes the first clamping part 21 slide in the width direction of the matching space 22 and stay at the corresponding position. The screw-fitted mode forms self-locking for the first clamping part 21, preventing the first clamping part 21 from retreating and causing the clamping to be loose.

[0061] Further, in order to ensure that the driving screw 24 does not move axially when it rotates, the driving screw 24 includes a limiting section 242 and a spiral section for cooperating with the spiral hole 212. The limiting section 242 is connected with a limiting part 25, and the width of the limiting part 25 is greater than the width of the spiral section. The base 23 is provided with a first limiting part 234a and a second limiting part 234b corresponding to the position of the limiting part 25. The first limiting part 234a and the second limiting part 234b respectively abut against both ends of the limiting part 25, so that the driving screw 24 remains in place when it rotates.

[0062] Further, the limiting section 242 is located at the inner end of the spiral section, and the cross-sectional shape of the limiting section 242 is non-circular. The limiting member 25 is provided with a connecting groove 251, and the cross-sectional shape of the connecting groove 251 matches the cross-sectional shape of the limiting section 242. The limiting section 242 is inserted into the connecting groove 251 and locked by a screw. The first limiting part 234a and the second limiting part 234b are connected by two spaced blocking parts, and the first limiting part 234a, the second limiting part 234b and the two blocking parts form a containing groove 234. The limiting member 25 is located in the containing groove 234 to save space on the base 23.

[0063] Further, in order to ensure the use experience of the supporting plate 1, the upper end of the supporting plate 1 is provided with a blocking part 3 which protrudes upward from the upper end surface of the supporting plate 1. The blocking part 3 can be integrally formed with the supporting plate 1, or can be connected to the supporting plate 1 by a detachable connection. For example, the lower end of the blocking part 3 in the embodiment is provided with a plurality of latches 31, and the supporting plate 1 is provided with corresponding insertion holes 13. The latches 13 are inserted into the insertion holes 13. When the supporting plate 1 is inclined backward, the blocking part 3 can block the office articles on the supporting plate 1 from sliding off the supporting plate 1.

[0064] Further, the supporting plate 1 includes a supporting plate body, and the rear end of the supporting plate body has an extension part 11 which extends outward and transversely. The extension part 11 and the supporting plate body form an L-shaped structure, and the connecting assembly 2 is arranged at the lower end of the extension part 11. The extension part 11 can extend the length of the supporting plate 1 in the front-rear direction. After the connecting assembly is connected to the armrest 61 of the seat, a larger sitting space is formed between the supporting plate body and the back of the chair.

[0065] Further, the base 23 is connected to the lower end of the supporting plate 1, and the connection structure is as follows: the base 23 is provided with a plurality of insertion columns 232, and the supporting plate 1 is provided with a plurality of countersunk holes 12. The countersunk hole 12 includes a counterbore which is recessed from the upper end surface of the supporting plate 1, and an insertion hole which extends downward from the bottom surface of the counterbore and penetrates the supporting plate 1. The insertion column 322 is inserted into the insertion hole and locked by a screw. The head of the screw is located in the counterbore, so as to ensure that the upper end surface of the supporting plate 1 remains flat.

[0066] Further, although the head of the screw is located in the counterbore, the upper end surface of the supporting plate 1 can still be observed carefully to see the screw head, which greatly affects the appearance of the supporting plate 1. Therefore, in the embodiment, a cover plate 4 is connected to the upper end surface of the supporting plate 1. The cover plate 4 can be a rigid plate fixed to the supporting plate 1 by adhesive, or a flexible mouse pad covering the upper end surface of the supporting plate 1. The cover plate 4 covers the plurality of counterbores, so that the supporting plate 1 is more simple and elegant in appearance. In addition, the thickness of the cover plate 4 is much smaller than the thickness of the supporting plate 1, and will not greatly affect the flatness of the upper end surface of the supporting plate 1.

[0067] Further, in order to improve the experience of the supporting plate 1, a cup seat 5 is arranged on the left side or the right side of the supporting plate 1, and the cup seat 5 is arranged on the supporting plate 1 through a plug-in assembly, which comprises a plug-in seat 51 arranged on the supporting plate 1 and a plug-in part 52 arranged on the cup seat 5. The plug-in part 52 is inserted into or pulled out of the plug-in groove 51a, so that the cup seat 5 is connected to or separated from the supporting plate 1. The user can quickly install the cup seat 5 on the supporting plate 1, and can quickly remove the cup seat 5 from the supporting plate 1 when the cup seat 1 is not needed.

[0068] Further, when the supporting plate 1 is deflected with the backward rotation of the chair back 63, the cup seat 5 and the water cup arranged on the cup seat 5 are also linked and tilted backward, which may cause the drink in the water cup to spill. Therefore, in order to avoid this phenomenon, an anti-tilting structure is arranged between the plug-in seat 51 and the plug-in part 52. The anti-tilting structure comprises an arc-shaped guide surface 511 arranged on the groove bottom of the plug-in groove 51a and an arc-shaped matching surface 521 arranged on the outer wall of the plug-in part 52. The arc-shaped matching surface 521 is in contact with the arc-shaped guide surface 511. When the supporting plate 1 is tilted backward, the arc-shaped matching surface 521 and the arc-shaped guide surface 511 are not fixed structures, and the cup seat 5 is only subjected to the downward gravity. Therefore, the arc-shaped guide surface 511 guides the arc-shaped matching surface 521, so that the plug-in part 52 rotates relative to the plug-in seat 51, and the cup seat 5 and the water cup arranged in the cup seat 5 are always perpendicular to the ground, thereby preventing the drink in the water cup from spilling.

[0069] Further, in order to smoothly match the plug-in part 52 with the plug-in groove 51a, the plug-in part 52 is connected to the cup seat 5 through a narrowed part 522, and the width of the narrowed part 522 is smaller than the width of the plug-in part 52. An avoiding groove 512 is arranged on the plug-in seat 51 and is in communication with the plug-in groove 51a. When the plug-in part 52 is inserted into or pulled out of the plug-in groove 51a, the avoiding groove 512 avoids the narrowed part 522, thereby preventing the plug-in part 52 from interfering with the plug-in seat 51 when the plug-in part 52 is inserted upward or downward.

[0070] Further, the cup seat 5 is also provided with a pen hole 53 with an open upper end, so as to facilitate the user to place a writing pen after the work is completed.

[0071] Further, the cup seat 5 comprises an integrated supporting part and a ring-shaped blocking part, the ring-shaped blocking part surrounds the supporting part and forms a placing groove, and the supporting part is provided with single or multiple drainage holes 54. The drainage holes 54 can drain the drink accidentally spilled into the cup seat 5, so as to keep the cup seat 5 clean.

[0072] Embodiment 2: The difference between the embodiment and the above-mentioned embodiments is that, as shown in FIG. 2, the plug-in part 52 is arranged on the cup seat 5 through a plug-in part 52, and the plug-in part 52 is arranged on the plug-in seat 51 through a plug-in part 52. Figures 9-12As shown, the structure of the first clamping member 21 and the second clamping member 21a in the embodiment is different from the above embodiment. In the embodiment, the connecting assembly comprises the first clamping member 21 and the second clamping member 21a located at the lower end of the supporting plate 1, and a matching space 22 is formed between the first clamping member 21 and the second clamping member 21a. At least one of the first clamping member 21 and the second clamping member 21a can rotate along the width direction of the matching space 22.

[0073] The first clamping member 21 and / or the second clamping member 21a rotate and open outward to a predetermined position to adjust the width of the matching space 22.

[0074] Further, in the embodiment, both the first clamping member 21 and the second clamping member 21a can rotate along the width direction of the matching space 22 to form a rotating clamp structure. A spring is arranged between the first clamping member 21 and the second clamping member 21a to provide sufficient clamping force for the first clamping member 21 and the second clamping member 21a. The spring can be a torsion spring. Specifically, the connecting assembly comprises a base 23 fixed at the lower end of the supporting plate 1. The first clamping member 21 and the second clamping member 21a are both hinged to the base 23 and form two hinged ends. The hinged ends are provided with torsion springs that always have a restoring tendency for the first clamping member 21 and the second clamping member 21a.

[0075] Further, the spring can also be a tension spring 26. Specifically, the connecting assembly further comprises the base 23 fixed at the lower end of the supporting plate 1. The first clamping member 21 and the second clamping member 21a are both hinged to the base 23. A tension spring 26 that always has a restoring tendency for the first clamping member 21 and the second clamping member 21a is fixedly connected between the first clamping member 21 and the second clamping member 21a. The tension spring 26 can provide sufficient clamping force for the first clamping member 21 and the second clamping member 21a to prevent the first clamping member 21 and the second clamping member 21a from loosening. At the same time, the tension spring 26 connects the first clamping member 21 and the second clamping member 21a, making the connecting assembly more stable in connection with the handrail 61.

[0076] Further, in addition to making the first clamping member 21 and the second clamping member 21a rotate along the width direction of the matching space 22, another design structure of the first clamping member 21 and the second clamping member 21a in the embodiment is as follows: the second clamping member 21a is fixedly connected at the lower end of the supporting plate 1. The first clamping member 21 and the second clamping member 21a are both provided with hinged parts, and the two hinged parts are hinged to form a hinged end. The hinged end is provided with a torsion spring that always has a restoring tendency for the first clamping member 21.

[0077] Further, besides setting the elastic member to form enough clamping force between the first clamping member 21 and the second clamping member 21a, the cooperation of the bolt and the nut can also be achieved. Specifically, the connecting assembly further comprises a base 23 fixed at the lower end of the supporting plate 1, and the first clamping member 21 and the second clamping member 21a are both hinged on the base 23. The first clamping member 21 and the second clamping member 21a are both provided with adjusting portions, and the adjusting portions are both provided with adjusting holes extending along the width direction of the cooperation space 22. Two adjusting holes are simultaneously provided with adjusting bolts 27, and the tail portions of the adjusting bolts 27 are threadedly cooperated with adjusting nuts 28. The adjusting nuts 28 are butterfly nuts for easy rotation. The rotation of the adjusting nuts 28 makes the two adjusting portions approach or move away from each other, so as to adjust the width of the cooperation space 22.

[0078] Embodiment 3: The difference between this embodiment and the above embodiments is that, as shown in the figure, the first clamping member 21 and the second clamping member 21a in this embodiment are fixedly designed. Specifically, the connecting assembly comprises the base 23 and the first clamping member 21 and the second clamping member 21a fixed at the lower end of the base 23. The first clamping member 21 and the second clamping member 21a form the cooperation space 22. At least one of the first clamping member 21 and the second clamping member 21a can be elastically deformed along the width direction of the cooperation space 22 under the action of external force. Figure 13

[0079] Under the action of external force, the first clamping member 21 and / or the second clamping member 21a are elastically deformed and outwardly opened to a predetermined position, so as to adjust the width of the cooperation space 22 to the right position, thereby also forming enough clamping force on the handrail 61.

[0080] Embodiment 4: The difference between this embodiment and the above embodiments is that, as shown in the figure, the structure of the connecting assembly in this embodiment is different from that of the above embodiments. Specifically, the connecting assembly comprises the sleeve joint 7 and the wedge-shaped sliding member 71. The wedge-shaped sliding member 71 is slidingly connected at the lower end of the supporting plate 1 through the guide rail 75 arranged at the lower end of the supporting plate 1. The sleeve joint 7 has the cooperation space 22 extending along the horizontal direction, and the wedge-shaped sliding member 71 is positionally corresponding to the cooperation space 22. Figures 14-15

[0081] The wedge-shaped sliding member 71 is horizontally slid into the predetermined position in the cooperation space 22, so as to adjust the width of the cooperation space 22 to the right position. When actually installed on the seat, the corresponding handrail 61 is in the cooperation space 22, and the handrail 61 forms a gap with the sleeve joint 7. The wedge-shaped sliding member 71 has a wedge surface 711. As the wedge-shaped sliding member 71 gradually slides into the gap, the gap is gradually filled by the wedge-shaped sliding member 71, thereby clamping the handrail 61 in the cooperation space.

[0082] ​​Further, in order to keep the wedge-shaped sliding member 7 in position after sliding, a screw hole is arranged on the wedge-shaped sliding member 71 in horizontal direction, and the connecting assembly further comprises a driving member, which is a screw rod 73 screwing into the screw hole and capable of rotating in situ, and the outer end of the screw rod 73 is fixedly connected with a hand wheel 74, and rotating the hand wheel 74 can make the wedge-shaped sliding member 71 slide into the matching space 22 horizontally and stay in the corresponding position.

[0083] Further, in order to avoid axial movement of the screw rod 73, a supporting seat 72 is arranged at the lower end of the supporting plate 1, and a through hole is arranged on the supporting seat 72, and the screw rod 73 is inserted into the through hole, and two limiting nuts 76 are screwing onto the screw rod 73 and located at the two ends of the supporting seat 72 respectively, and the two limiting nuts 76 abut against the two ends of the supporting seat 72 respectively, so that the screw rod 73 can keep in situ when rotating.

[0084] The above description of the utility model and its embodiments is illustrative, and is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, and without departing from the creative purpose of the utility model, similar structural modes and embodiments can be designed without creativity, and all of them shall belong to the protection scope of the utility model.

Claims

1. A pallet assembly, characterized by The utility model provides a kind of connecting assembly, including supporting plate (1) and the connecting assembly for being detachably installed with seat and being arranged on supporting plate (1), connecting assembly includes first clamping piece (21) and second clamping piece (21a) at the lower end of supporting plate (1), and first clamping piece (21) and second clamping piece (21a) form cooperation space (22) between, at least one of first clamping piece (21) and second clamping piece (21a) can slide along the width direction of cooperation space (22) and stay in corresponding position; First clamping piece (21) and / or second clamping piece (21a) slide and stay in corresponding position, to adjust the width of cooperation space (22) in place.

2. The pallet assembly of claim 1, wherein: First clamping piece (21) can slide along the width direction of cooperation space (22) and stay in corresponding position, and second clamping piece (21a) is relatively fixed with supporting plate (1).

3. A pallet assembly according to claim 2, wherein: Connecting assembly further includes pedestal (23) fixed at the lower end of supporting plate (1), and second clamping piece (21a) is fixedly connected on pedestal (23);Pedestal (23) is equipped with sliding groove (231) extending along the width direction of cooperation space (22), and first clamping piece (21) is equipped with sliding connection part (211) matched with sliding groove (231), and sliding connection part (211) is slidably connected in sliding groove (231).

4. The pallet assembly of claim 2, wherein: First clamping piece (21) is equipped with helical hole (212) extending along the width direction of cooperation space (22), and connecting assembly further includes driving member, which is driving screw (24) helically fitted in helical hole (212) and can rotate in situ, and driving screw (24) is connected with handle (241) at outer end, and rotating handle (241) makes first clamping piece (21) slide along the width direction of cooperation space (22) and stay in corresponding position.

5. A pallet assembly according to claim 4 wherein: Driving screw (24) includes limiting section (242), and helical section for cooperating with helical hole (212), limiting section (242) is connected with limiting piece (25), and the width of limiting piece (25) is greater than the width of helical section;Pedestal (23) is equipped with first limiting part (234a) and second limiting part (234b) corresponding to the position of limiting piece (25), and first limiting part (234a) and second limiting part (234b) respectively abut against both ends of limiting piece (25), so that driving screw (24) remains in situ when rotating.

6. The pallet assembly of claim 1, wherein: The upper end of the supporting plate (1) is provided with a blocking part (3) which protrudes upward from the upper end surface of the supporting plate (1).

7. The pallet assembly of claim 1, wherein: The supporting plate (1) includes a supporting plate body, and the rear end of the supporting plate body has an extension (11) extending transversely outward, the extension (11) and the supporting plate body form an L-shaped structure, and the connecting assembly (2) is arranged at the lower end of the extension (11).

8. A pallet assembly characterized by, The utility model provides a kind of connecting assembly, including supporting plate (1) and the connecting assembly for being detachably installed with seat and being arranged on supporting plate (1), connecting assembly includes first clamping piece (21) and second clamping piece (21a) at the lower end of supporting plate (1), and first clamping piece (21) and second clamping piece (21a) form cooperation space (22) between, at least one of first clamping piece (21) and second clamping piece (21a) can rotate along the width direction of cooperation space (22); The first clamping member (21) and / or the second clamping member (21a) rotates and spreads outward to a predetermined position to adjust the width of the fitting space (22) in place.

9. A pallet assembly according to claim 8, wherein: The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23) and form two hinged ends, and torsion springs are arranged at the hinged ends to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency.

10. The pallet assembly of claim 8, wherein: The second clamping member (21a) is fixedly connected at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both provided with a hinged part, and the two hinged parts are hinged and form a hinged end, and a torsion spring is arranged at the hinged end to make the first clamping member (21) always have a restoring tendency.

11. The pallet assembly of claim 8, wherein: The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and a tension spring (26) is fixedly connected between the first clamping member (21) and the second clamping member (21a) to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency.

12. The pallet assembly of claim 8, wherein: The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and the first clamping member (21) and the second clamping member (21a) are both provided with an adjusting part, and an adjusting hole extending along the width direction of the fitting space (22) is arranged through the adjusting part, and an adjusting bolt (27) is simultaneously arranged in the two adjusting holes, and an adjusting nut (28) is threadedly connected at the tail of the adjusting bolt (27), and rotating the adjusting nut (28) makes the two adjusting parts close to or away from each other to adjust the width of the fitting space (22).

13. A pallet assembly characterized by, The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and a tension spring (26) is fixedly connected between the first clamping member (21) and the second clamping member (21a) to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency. Under the action of the external force, the first clamping member (21) and / or the second clamping member (21a) elastically deforms and spreads outward to a predetermined position to adjust the width of the fitting space (22) in place.

14. A pallet assembly characterized by, The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and a tension spring (26) is fixedly connected between the first clamping member (21) and the second clamping member (21a) to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency. The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and a tension spring (26) is fixedly connected between the first clamping member (21) and the second clamping member (21a) to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency. The connecting assembly further comprises a base (23) fixed at the lower end of the supporting plate (1), and the first clamping member (21) and the second clamping member (21a) are both hinged on the base (23), and a tension spring (26) is fixedly connected between the first clamping member (21) and the second clamping member (21a) to make the first clamping member (21) and the second clamping member (21a) always have a restoring tendency.

15. The pallet assembly of claim 14, wherein: The wedge-shaped sliding member (71) is provided with a screw hole extending in the horizontal direction, and the connecting assembly further comprises a driving member, which is a screw rod (73) screw-fitted in the screw hole and rotatable in place. The outer end of the screw rod (73) is fixedly connected with a hand wheel (74). Rotating the hand wheel (74) makes the wedge-shaped sliding member (71) slide horizontally into the fitting space (22) and stay at the corresponding position.

16. The pallet assembly of claim 15, wherein: The lower end of the supporting plate (1) is provided with a supporting seat (72), and the supporting seat (72) is provided with a through hole. The screw rod (73) is inserted into the through hole. Two limiting nuts (76) are screw-fitted on the screw rod (73) and located at the two ends of the supporting seat (72) respectively. The two limiting nuts (76) abut against the two ends of the supporting seat (72) respectively, so that the screw rod (73) remains in place when rotating.

17. A seat, characterized by The chair body (6) and the supporting plate assembly according to any one of claims 1-16 are included, and the supporting plate (1) is detachably installed on the chair body (6) through the connecting assembly.

18. A seat as claimed in claim 17, characterised in that: The chair body (6) is provided with an armrest (61) on each of the left and right sides. One of the armrests (61) on the chair body (6) is located in the adjusted fitting space (22), so that the supporting plate (1) is fixed on the seat.

19. A seat as claimed in claim 18, characterised in that: The chair body (6) comprises a seat (62) and a back (63). The seat (62) or the back (63) is connected with an armrest support arm (61a) on each of the left and right sides. The armrest (61) is rotatably connected to the top end of the armrest support arm (61a) in the horizontal direction. Under the action of external force, the supporting plate (1) can rotate to the outside with the corresponding armrest (61) to leave a standing-up space.

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