Desk and chair with slow-rebound seat plate

Abstract

The utility model relates to a desk and chair with a slowly rebounded seat plate, which belongs to the field of desks and chairs and comprises chair legs, a seat plate and a chair back, a mounting seat is fixedly arranged at the top ends of the chair legs, and a seat plate support and a chair back support are arranged on the mounting seat; the chair back bracket is fixedly arranged on the mounting seat, and the seat plate bracket is rotatably arranged on the mounting seat through the damping rotating mechanism; the damping rotating mechanism comprises a rotating shaft rotatably arranged on the mounting seat through a damper, the seat plate support is fixedly connected with the rotating shaft, the damping rotating mechanism further comprises a rebound assembly arranged on the seat plate support, the rebound assembly is connected with the mounting seat and the seat plate support, and the damping rotating mechanism further comprises a limiting assembly used for supporting the seat plate support; the seat plate is fixedly arranged on the seat plate support, and the chair back is fixedly arranged on the chair back support. According to the utility model, the collision between the seat plate and the chair back can be effectively reduced, the purpose of reducing and even preventing the sound generated when the seat plate rebounds is achieved, and the purpose of preventing the desk and chair from being collided and damaged when the seat plate rebounds is achieved.

Description

Technical Field

[0001] The utility model relates to the field of desks and chairs, in particular to a desks and chairs with a slow-rebound seat board. Background Art

[0002] Desks and chairs are the desks and chairs used by students in class and are a type of desks and chairs. At present, the classrooms in higher vocational schools and universities are generally stepped classrooms. The desks and chairs in stepped classrooms generally use desks and chairs that can rebound. When the desks and chairs are not in use, the seat board will automatically rebound and lean against the backrest, which can effectively save the space in the classroom and leave aisles between the desks and chairs. However, the seat boards of the current desks and chairs basically rebound by their own gravity. The seat board rotates by the self-weight at the rear end of the seat board to realize the rebound of the seat board. The rebound speed is relatively fast, and a relatively large sound will be generated when colliding with the backrest. At the same time, the collision between the seat board and the backrest will also accelerate the damage of the desks and chairs. Based on this, the utility model provides a desks and chairs with a slow-rebound seat board, which slows down the rebound speed of the seat board to achieve the purpose of reducing or even preventing the sound when the seat board rebounds, and to avoid the desks and chairs from being damaged by collision when the seat board rebounds. Content of the Utility Model

[0003] Based on this, it is necessary to provide a desks and chairs with a slow-rebound seat board, including chair legs, a seat board and a backrest. An installation seat is fixedly arranged at the top end of the chair legs. A seat board bracket and a backrest bracket are arranged on the installation seat. The backrest bracket is fixedly arranged on the installation seat. The seat board bracket is rotatably arranged on the installation seat through a damping rotation mechanism. The damping rotation mechanism includes a rotating shaft rotatably arranged on the installation seat through a damper. The rotating shaft is horizontally arranged. The seat board bracket is fixedly connected with the rotating shaft. The damping rotation mechanism further includes a rebound assembly arranged on the seat board bracket. The rebound assembly connects the installation seat and the seat board bracket and is used for driving the seat board bracket to rotate towards the backrest. The damping rotation mechanism further includes a limiting assembly for supporting the seat board bracket. The seat board is fixedly arranged on the seat board bracket. The backrest is fixedly arranged on the backrest bracket.

[0004] In the utility model, the chair legs are the installation structure of the desks and chairs. The chair legs are used to fixedly install the desks and chairs on the ground. The seat board and the backrest are respectively installed on the chair legs through the seat board bracket and the backrest bracket. Among them, the backrest bracket and the installation seat are fixedly connected to each other. Therefore, preferably, the backrest bracket and the installation seat can be integrally formed to facilitate the production of the backrest bracket and the installation seat.

[0005] In the present utility model, the limiting component is used to support the seat plate and plays a fixing role on the seat plate so that the seat plate can be used for students to sit on. Among them, after the student leaves the seat plate, the elastic return component will, under the action of its own elastic return force, push the seat plate bracket to rotate around the axis of the rotating shaft towards the backrest, thereby driving the seat plate to rotate towards the back of the chair. During this process, due to the restriction of the damper on the rotating shaft, the entire rotation process is slow. Therefore, it can effectively reduce the collision between the seat plate and the back of the chair, achieve the purpose of reducing or even preventing the seat plate from making a sound when it rebounds, and achieve the purpose of avoiding the collision damage of the desks and chairs when the seat plate rebounds.

[0006] Furthermore, a table board is fixedly arranged on the backrest bracket. The table board is horizontally arranged and located at the rear side of the backrest.

[0007] In the present utility model, the table board fixedly arranged on the backrest is used by students sitting on the desks and chairs in the back row.

[0008] Furthermore, a receiving frame is fixedly arranged on the lower surface of the table board.

[0009] In the present utility model, the receiving frame arranged on the lower surface of the table board can be used to store items, such as books, stationery, etc.

[0010] Furthermore, the mounting seat has a box-like structure with an open lower end. The mounting seat is fixedly sleeved on the top end of the chair leg; the damper is fixedly arranged inside the mounting seat. Both ends of the rotating shaft extend out of the mounting seat. The seat plate bracket is provided with two connecting arms corresponding to both ends of the rotating shaft. The connecting arms are respectively located on both sides of the mounting seat, and mounting holes are formed at the ends of the connecting arms corresponding to the rotating shaft. Both ends of the rotating shaft are inserted into the corresponding mounting holes and fixedly connected to the corresponding mounting holes.

[0011] In the present utility model, the mounting seat is fixed on the chair leg by being sleeved on the top end of the chair leg. Among them, a plurality of through-hole structures can be formed on the mounting seat and the chair leg so that the mounting seat can be fixed on the chair leg using bolt structures, improving the firmness of its connection structure.

[0012] In the present utility model, preferably, the rotating shaft is preferably made of hexagonal steel. Correspondingly, the mounting holes on the connecting arms are set as internal hexagonal holes so that there will be no relative rotation between the rotating shaft and the connecting arms. In addition, a transmission piece fixedly connected to the rotating shaft can be sleeved on the rotating shaft, and a stop block is arranged on the connecting arm corresponding to the edge of the transmission piece so that the edge of the transmission piece abuts against the stop block, which can further prevent relative rotation between the rotating shaft and the connecting arms; further preferably, both sides of the two connecting arms on the seat plate bracket facing the mounting seat are in contact with the mounting seat and are slidably matched with the mounting seat. At this time, the mounting seat can play a certain limiting role on the seat plate bracket to prevent the seat plate bracket from sliding relative to the rotating shaft.

[0013] In addition, in the present invention, the damper is mounted on the inner side of the mounting seat, and the mounting seat can be used to provide good protection for the damper, thereby preventing the damper from being contaminated by dust during use and affecting its normal use.

[0014] Furthermore, the damper is a disc-type damper that can rotate 360 degrees.

[0015] In the present invention, the damper adopts a disc-type damper that can rotate 360°, such as the disc-type damper model ZB-48D12 produced by Hebei Mufeng Furniture Manufacturing Co., Ltd. At this time, the rotating shaft needs to be inserted into the damper and connected to the damper. Compared with the damper with angle limitation, the rotation process of the seat plate bracket can avoid the impact on the damper, thereby effectively extending the service life of the damper.

[0016] Furthermore, the rebound assembly includes a torsion spring sleeved on the end of the rotating shaft, and two torsion legs of the torsion spring are respectively in contact with the mounting seat and the connecting arm.

[0017] In the present invention, when the seat is supported by the limiting assembly, the torsion spring needs to be in a compressed state. At this time, after the student leaves the seat, the seat will be pushed toward the chair back under the rebound force of the torsion spring, thereby realizing the folding of the seat.

[0018] Furthermore, a receiving groove is provided on the side wall of the connecting arm facing away from the mounting seat, the receiving groove is connected to the mounting hole, and the end of the rotating shaft is located in the receiving groove to form a connecting end, and the torsion spring is sleeved on the connecting end of the rotating shaft; a limiting hole is also provided at the bottom of the receiving groove, and the limiting hole is in the shape of an arc with the center located on the axis of the rotating shaft, and the limiting assembly includes an abutment column fixedly provided on the side wall of the receiving groove, and a support end formed at one end of the limiting hole, and the abutment column is provided through the limiting hole; an abutment block is provided on the side wall of the receiving groove corresponding to the torsion spring, and the two torsion feet of the torsion spring respectively abut the abutment block and the abutment column, thereby realizing an elastic connection between the seat plate bracket and the mounting seat.

[0019] In the present invention, an abutment post provided on the mounting base passes through a limiting hole. Therefore, when the seat plate bracket rotates relative to the mounting base, the rotation angle of the seat plate bracket is limited by the abutment post. When the abutment post abuts against the supporting end of the limiting hole, the seat plate bracket is supported by the limiting hole, and the seat plate is in a riding position for a student to sit on. The position of the other end of the limiting hole can be designed according to the angle between the seat plate and the chair back when the seat plate is in the riding position, so that when the abutment post abuts against the other end of the limiting hole, that is, when the seat plate is in the retracted position, the seat plate is still a certain distance away from the chair back, thereby preventing the seat plate from colliding with the chair back during rebound.

[0020] Among them, when a transmission piece is sleeved on the connecting shaft, the transmission piece is preferably located in the receiving groove so that the receiving groove can play a certain role in isolating and protecting the transmission piece.

[0021] Furthermore, a protective cover is detachably arranged at the opening of the receiving groove.

[0022] In the present utility model, the protective cover arranged at the opening of the receiving groove can seal the receiving groove, thereby playing a role in protecting and isolating the components in the receiving groove.

[0023] Furthermore, a mounting plate is fixedly arranged at the bottom end of the chair leg, and a plurality of through holes vertically penetrating through the mounting plate are formed on the mounting plate.

[0024] In the present utility model, the mounting plate at the bottom end of the chair leg is used for the installation of the chair leg, and the mounting plate can be fixed to the ground by using bolt structures through the through holes on the mounting plate. Among them, a detachable protective cover can also be sleeved on the mounting plate to protect the bolt structures on the mounting plate.

[0025] The principle and effects of the present utility model will be further described below in combination with the above technical solutions and the accompanying drawings:

[0026] In the present utility model, the limiting component is used to support the seat board and plays a fixing role on the seat board so that the seat board can be used for students to sit. Among them, after the student leaves the seat board, the elastic return component will push the seat board bracket to rotate towards the backrest around the axis of the rotating shaft under the action of its own elastic return force, thereby driving the seat board to rotate towards the backrest of the chair. During this process, due to the restriction of the damper on the rotating shaft, the entire rotation process is slow. Therefore, it can effectively reduce the collision between the seat board and the backrest, achieve the purpose of reducing or even preventing the seat board from making a sound when rebounding, and achieve the purpose of avoiding the collision damage of the desks and chairs when the seat board rebounds. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the seat board of the slow-rebound type desks and chairs of the present utility model when in the sitting state;

[0028] Figure 2 is a schematic structural diagram of the seat board of the slow-rebound type desks and chairs of the present utility model when in the retracted state;

[0029] Figure 3 is a schematic connection structure diagram of the mounting seat and the seat board bracket of the present utility model;

[0030] Figure 4 is Figure 3 a partial enlarged view of;

[0031] Figure 5Explosion structure schematic diagram of the slow-rebound type school desk and chair with a seat board according to the embodiment of the present utility model.

[0032] Reference numerals

[0033] 1 - chair leg, 11 - mounting plate, 12 - protective cover, 2 - seat board, 3 - backrest, 4 - mounting seat, 41 - damper, 42 - rotating shaft, 421 - torsion spring, 422 - transmission piece, 43 - abutting column, 5 - seat board support, 51 - connecting arm, 511 - receiving groove, 512 - abutting block, 513 - stop block, 514 - protective cover, 515 - limiting hole, 6 - backrest support, 7 - table board, 71 - receiving frame. Detailed implementation manners

[0034] For the convenience of those skilled in the art to understand, the present utility model will be further described in detail below in conjunction with the drawings and embodiments:

[0035] As Figures 1-5 , a slow-rebound type school desk and chair with a seat board, comprising a chair leg 1, a seat board 2 and a backrest 3. The top end of the chair leg 1 is fixedly provided with a mounting seat 4, and a seat board support 5 and a backrest support 6 are arranged on the mounting seat 4; the backrest support 6 is fixedly provided on the mounting seat 4, and the seat board support 5 is rotatably arranged on the mounting seat 4 through a damping rotation mechanism; the damping rotation mechanism includes a rotating shaft 42 rotatably arranged on the mounting seat 4 through a damper 41, the rotating shaft 42 is horizontally arranged, the seat board support 5 is fixedly connected with the rotating shaft 42, the damping rotation mechanism further includes a rebound assembly arranged on the seat board support 5, the rebound assembly connects the mounting seat 4 and the seat board support 5 and is used for driving the seat board support 5 to rotate towards the backrest 3, and the damping rotation mechanism further includes a limiting assembly for supporting the seat board support 5; the seat board 2 is fixedly provided on the seat board support 5, and the backrest 3 is fixedly provided on the backrest support 6.

[0036] In the present utility model, the chair leg 1 is the installation structure of the school desk and chair, and the chair leg 1 is used to fixedly install the school desk and chair on the ground. The seat board 2 and the backrest 3 are respectively installed on the chair leg 1 through the seat board support 5 and the backrest support 6. Among them, the backrest support 6 and the mounting seat 4 are fixedly connected to each other. Therefore, preferably, the backrest support 6 and the mounting seat 4 can be integrally formed to facilitate the production of the backrest support 6 and the mounting seat 4.

[0037] In the present utility model, the limiting component is used to support the seat board 2 and plays a fixing role on the seat board 2 so that the seat board 2 can be used for students to sit on. Among them, after the student leaves the seat board 2, the elastic return component will push the seat board bracket 5 to rotate towards the backrest around the axis of the rotating shaft 42 under the action of its own elastic return force, thereby driving the seat board 2 to rotate towards the chair back 3. During this process, due to the restriction of the damper 41 on the rotating shaft 42, the whole rotation process is slow. Therefore, it can effectively reduce the collision between the seat board 2 and the chair back 3, achieve the purpose of reducing or even preventing the seat board 2 from making a sound when it rebounds, and achieve the purpose of avoiding the collision damage of the desks and chairs when the seat board 2 rebounds.

[0038] In one embodiment, a table board 7 is further fixedly arranged on the chair back bracket 6. The table board 7 is horizontally arranged and is located at the rear side of the chair back 3.

[0039] In this embodiment, the table board 7 fixedly arranged on the chair back 3 is used by students sitting on the desks and chairs in the back row.

[0040] In one embodiment, a receiving frame 71 is fixedly arranged on the lower surface of the table board 7.

[0041] In this embodiment, the receiving frame 71 arranged on the lower surface of the table board 7 can be used to store items, such as books, stationery, etc.

[0042] In one embodiment, the mounting seat 4 has a box-like structure with an open lower end. The mounting seat 4 is fixedly sleeved on the top end of the chair leg 1; the damper 41 is fixedly arranged inside the mounting seat 4. The two ends of the rotating shaft 42 extend out of the mounting seat 4. The seat board bracket 5 is provided with two connecting arms 51 corresponding to the two ends of the rotating shaft 42. The connecting arms 51 are respectively located on both sides of the mounting seat 4, and mounting holes are formed in the connecting arms 51 corresponding to the ends of the rotating shaft 42. The two ends of the rotating shaft 42 are inserted into the corresponding mounting holes and fixedly connected to the corresponding mounting holes.

[0043] In this embodiment, the mounting seat 4 is fixed on the chair leg 1 by sleeving it on the top end of the chair leg 1. Among them, a plurality of through-hole structures can be formed on the mounting seat 4 and the chair leg 1 so that the mounting seat 4 can be fixed on the chair leg 1 by using bolt structures, thereby improving the firmness of its connection structure.

[0044] In this embodiment, preferably, the rotating shaft 42 is preferably made of hexagonal steel. Correspondingly, the mounting holes on the connecting arm 51 are set as hexagonal holes, so that there is no relative rotation between the rotating shaft 42 and the connecting arm 51. In addition, a transmission piece 422 fixedly connected to the rotating shaft 42 can be sleeved on the rotating shaft 42, and a stop block 513 is arranged on the connecting arm 51 corresponding to the edge of the transmission piece 422, so that the edge of the transmission piece 422 abuts against the stop block 513, which can further prevent relative rotation between the rotating shaft 42 and the connecting arm 51. Further preferably, both sides of the two connecting arms 51 on the seat plate bracket 5 facing the mounting seat 4 are attached to the mounting seat 4 and are slidably arranged with the mounting seat 4. At this time, the mounting seat 4 can play a certain limiting role on the seat plate bracket 5 to prevent the seat plate bracket 5 from sliding relative to the rotating shaft 42.

[0045] In addition, in this embodiment, the damper 41 is installed inside the mounting seat 4, and the mounting seat 4 can play a good protective role for the damper 41, avoiding the damper 41 being contaminated with dust during use and affecting its normal use.

[0046] In one embodiment, the damper 41 is a disk-shaped damper that can rotate 360°.

[0047] In this embodiment, the damper 41 is a disk-shaped damper 41 that can rotate 360°, such as the disk-shaped damper 41 with the model number ZB-48D12 produced by Hebei Mufeng Furniture Manufacturing Co., Ltd. At this time, the rotating shaft 42 needs to be inserted into and connected to the damper 41. Compared with the damper 41 with an angular limit, it can avoid the impact of the rotation process of the seat plate bracket 5 on the damper 41, thereby effectively extending the service life of the damper 41.

[0048] In one embodiment, the return spring assembly includes a torsion spring 421 sleeved on the end of the rotating shaft 42, and the two torsion feet of the torsion spring 421 respectively abut against the mounting seat 4 and the connecting arm 51.

[0049] In this embodiment, when the seat plate 2 is supported by the limiting component, the torsion spring 421 needs to be in a compressed state. At this time, after the student leaves the seat plate 2, the seat plate 2 will be pushed towards the backrest 3 under the resilience of the torsion spring 421, realizing the folding of the seat plate 2.

[0050] In one embodiment, a receiving groove 511 is formed on a side wall of the connecting arm 51 facing away from the mounting seat 4. The receiving groove 511 communicates with the mounting hole, and an end of the rotating shaft 42 is located in the receiving groove 511 to form a connecting end. The torsion spring 421 is sleeved on the connecting end of the rotating shaft 42. A limiting hole 515 is further formed at the bottom of the receiving groove 511. The limiting hole 515 is in an arc shape with its center located on the axis of the rotating shaft 42. The limiting assembly includes a contact post 43 fixedly arranged on the side wall of the receiving groove 511 and a supporting end formed at one end of the limiting hole 515. The contact post 43 passes through the limiting hole 515. Contact blocks 512 corresponding to the torsion spring 421 are arranged on the side wall of the receiving groove 511. Two torsion feet of the torsion spring 421 respectively abut against the contact blocks 512 and the contact post 43, thereby realizing the elastic connection between the seat plate bracket 5 and the mounting seat 4.

[0051] In this embodiment, the contact post 43 arranged on the mounting seat 4 passes through the limiting hole 515. Therefore, when the seat plate bracket 5 rotates relative to the mounting seat 4, the rotation angle of the seat plate bracket 5 is limited by the contact post 43. When the contact post 43 abuts against the supporting end of the limiting hole 515, the seat plate bracket 5 is supported by the limiting hole 515. At this time, the seat plate 2 is in a riding state for students to sit on. The position of the other end of the limiting hole 515 can be designed according to the included angle between the seat plate 2 and the backrest 3 when the seat plate 2 is in the riding state, so that when the contact post 43 abuts against the other end of the limiting hole 515, that is, when the seat plate 2 is in the retracted state, there is a certain distance between the seat plate 2 and the backrest 3, thereby avoiding the collision between the seat plate 2 and the backrest 3 during the rebound process of the seat plate 2.

[0052] Among them, when a transmission piece 422 is sleeved on the connecting shaft, the transmission piece 422 is preferably located in the receiving groove 511, so that the receiving groove 511 can play a certain role in isolating and protecting the transmission piece 422.

[0053] In one embodiment, a protective cover 514 is detachably arranged at the opening of the receiving groove 511.

[0054] In this embodiment, the protective cover 514 arranged at the opening of the receiving groove 511 can close the receiving groove 511, thereby playing a role in protecting and isolating the components in the receiving groove 511.

[0055] In one embodiment, a mounting plate 11 is fixedly arranged at the bottom end of the chair leg 1. A plurality of through holes vertically penetrating the mounting plate 11 are formed on the mounting plate 11.

[0056] In this embodiment, the mounting plate 11 at the bottom end of the chair leg 1 is used for the installation of the chair leg 1, and it can be fixed to the ground by using a bolt structure through the through holes on the mounting plate 11. Additionally, a detachable protective cover 12 can be provided over the mounting plate 11 to protect the bolt structure on the mounting plate 11.

[0057] The above embodiments only illustrate several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A slow-rebound type school desk and chair with a seat board, comprising chair legs, a seat board and a backrest, characterized in that, The top of the chair leg is fixedly provided with a mounting seat, and the mounting seat is provided with a seat plate bracket and a seat back bracket; the seat back bracket is fixedly provided on the mounting seat, and the seat plate bracket is rotatably provided on the mounting seat through a damping rotation mechanism; the damping rotation mechanism includes a rotating shaft rotatably provided on the mounting seat through a damper, the rotating shaft is horizontally provided, the seat plate bracket is fixedly connected to the rotating shaft, and the damping rotation mechanism also includes a rebound component provided on the seat plate bracket, the rebound component connects the mounting seat and the seat plate bracket, and is used to drive the seat plate bracket to rotate toward the chair back, and the damping rotation mechanism also includes a limiting component for supporting the seat plate bracket; the seat plate is fixedly provided on the seat plate bracket, and the chair back is fixedly provided on the chair back bracket.

2. The slow-rebound seatboard type desks and chairs according to claim 1, characterized in that, A table top is also fixedly arranged on the chair back bracket, and the table top is arranged horizontally and located at the rear side of the chair back.

3. The slow-rebound seatboard type desks and chairs according to claim 2, characterized in that, A receiving frame is fixedly provided on the lower surface of the table top.

4. A slow-rebound seatboard type school desk and chair according to any one of claims 1-3, characterized in that, The mounting base is a box-shaped structure with an open lower end, and the mounting base is fixedly mounted on the top of the chair leg; the damper is fixedly arranged on the inner side of the mounting base, and the two ends of the rotating shaft extend out of the mounting base. The seat plate bracket is provided with two connecting arms corresponding to the two ends of the rotating shaft, and the connecting arms are respectively located on both sides of the mounting base, and mounting holes are opened on the connecting arms corresponding to the ends of the rotating shaft. The two ends of the rotating shaft are inserted into the corresponding mounting holes and fixedly connected to the corresponding mounting holes.

5. The slow-rebound seatboard type desks and chairs according to claim 4, characterized in that, The damper adopts a disc-type damper which can rotate 360 degrees.

6. The slow-rebound seatboard type school desks and chairs according to claim 4, characterized in that, The rebound component includes a torsion spring sleeved on the end of the rotating shaft, and two torsion legs of the torsion spring are respectively in contact with the mounting seat and the connecting arm.

7. The slow-rebound seatboard type school desks and chairs according to claim 6, characterized in that, A receiving groove is provided on the side wall of the connecting arm facing away from the mounting seat, the receiving groove is connected to the mounting hole, and the end of the rotating shaft is located in the receiving groove to form a connecting end, and the torsion spring is sleeved on the connecting end of the rotating shaft; a limiting hole is also provided at the bottom of the receiving groove, and the limiting hole is in the shape of an arc with the center located on the axis of the rotating shaft, and the limiting assembly includes an abutment column fixedly provided on the side wall of the receiving groove, and a support end formed at one end of the limiting hole, and the abutment column is provided through the limiting hole; an abutment block is provided on the side wall of the receiving groove corresponding to the torsion spring, and the two torsion feet of the torsion spring respectively abut the abutment block and the abutment column.

8. A slow-rebound seatboard type school desk and chair according to claim 7, characterized in that, A protective cover is detachably provided at the opening of the accommodating groove.

9. The slow-rebound seatboard type desks and chairs according to claim 1, characterized in that, A mounting plate is fixedly provided at the bottom end of the chair leg, and a plurality of through holes are vertically penetrated therethrough.

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