Liftable folding conference chair

Abstract

The utility model discloses a liftable folding conference chair which comprises a chair seat, a first supporting leg is rotatably connected to one side of the lower end of the chair seat, a supporting block is arranged on the other side of the lower end of the chair seat, a second supporting leg is rotatably connected to the lower end of the supporting block, the first supporting leg is matched with the second supporting leg, and a rotating seat is arranged at one end of the chair seat. A chair back is rotatably connected to the rotating seat, rotating shafts are arranged at the two ends of the chair back, the rotating shafts are rotatably matched with the rotating seat, matching wheels are arranged on the rotating shafts, a limiting rod is slidably connected into the rotating seat, the matching wheels are matched with the limiting rod, and a pressure spring is arranged between the limiting rod and the inner wall of the rotating seat. A fixing pin is arranged in the rotating seat, a fixing hole is formed in the limiting rod, and the fixing pin is matched with the fixing hole, the equipment can be folded and lifted, the amplitude of the chair backrest structure is convenient to adjust, use is convenient, and the comfort degree is improved.

Description

Technical Field

[0001] This utility model relates to the field of conference chair technology, and more specifically, to a height-adjustable and foldable conference chair. Background Technology

[0002] A chair is a common piece of equipment that people can sit on to recover and maintain their physical strength in a variety of situations.

[0003] When holding meetings, meeting chairs are prepared to facilitate long meetings. Common meeting chairs are similar to ordinary chairs, with simple structure and single function. In actual use, meetings need to prepare chairs corresponding to the number of attendees. However, in large companies, schools, and other venues, the number of attendees varies depending on the meeting and the number of chairs required. If more chairs are prepared than the number of attendees, the limited number of chairs placed among the people may affect the movement of people, and empty chairs will also affect the overall aesthetics of the meeting and cause inconvenience. Moreover, many meetings need to last for a long time, and sitting for long periods of time can cause discomfort and fatigue. Ordinary chairs have a simple and fixed structure. Although they may provide backrests, the non-adjustable backrests cannot accommodate the different sitting habits of different people, providing limited comfort. In addition, different people have different chair usage habits, and due to differences in their physical size, they have different fits when sitting on a chair and table. A suitable height is needed for convenient work and meetings, but ordinary chairs have a fixed structure and cannot be adjusted in height, making it impossible for everyone to use them efficiently. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a height-adjustable and foldable conference chair to solve the technical problems mentioned in the background art, such as the simple structure and single function of common chairs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a height-adjustable and foldable conference chair, including a seat, a first support leg rotatably connected to one side of the lower end of the seat, a support block provided on the other side, a second support leg rotatably connected to the lower end of the support block, the first support leg cooperating with the second support leg, a rotating seat provided at one end of the seat, and a backrest rotatably connected to the rotating seat;

[0008] The chair back is provided with a rotating shaft at both ends, the rotating shaft is rotatably engaged with the rotating seat, the rotating shaft is provided with a cooperating wheel, the rotating seat is slidably connected with a limiting rod, the cooperating wheel is engaged with the limiting rod, a pressure spring is provided between the limiting rod and the inner wall of the rotating seat, the rotating seat is provided with a fixing pin, the limiting rod is provided with a fixing hole, and the fixing pin is engaged with the fixing hole.

[0009] The present invention is further configured such that each of the first and second support legs has a telescopic groove, and a support rod is slidably connected in the telescopic groove. Each of the first and second support legs has a support pin on its side end. The support rod has a support hole, and multiple support holes are arranged vertically at equal intervals on the support rod. The support pin cooperates with the support hole to adjust the height of the equipment.

[0010] The present invention is further provided with a support plate at the lower end of the support rod, and an anti-slip pad at the lower end of the support plate to improve the support stability.

[0011] The present invention is further configured such that a limiting block is provided at the lower end of the seat and the support block, and the limiting block cooperates with the corresponding first support leg and the second support leg respectively to stabilize the support structure.

[0012] The present invention is further configured such that a rod groove is provided on the side end of the first support leg, and a reinforcing rod is rotatably connected in the rod groove; and a receiving frame is rotatably connected on the side end of the second support leg, thereby improving the structural strength.

[0013] The present invention is further configured such that a storage groove is provided on the side end of the first support leg, and the storage groove cooperates with the receiving frame to facilitate the cooperation between the structures during storage.

[0014] The present invention is further configured such that sliding grooves are provided at both ends of the chair seat, a traction block is provided in the sliding groove, the traction block is connected to a fixing pin, and a first return spring is provided between the traction block and the inner wall of the sliding groove to facilitate control of the rotation of the chair seat.

[0015] The present invention is further configured such that a second return spring is provided on one side of the support pin, and the support pin cooperates with the corresponding first support leg or second support leg through the second return spring to maintain stable control.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a height-adjustable and foldable conference chair, which has the following beneficial effects:

[0018] 1. The support structure is formed by the cooperation of the first support leg, the support block and the second support leg. Both the first support leg and the second support leg can rotate relative to the chair back. With the support of the support block, the support legs do not interfere with each other when folding. The rotating seat and the chair back provide a foldable chair back structure, so that the equipment can be folded with the chair seat as the center, reducing the size of the equipment, making it convenient for the storage and transportation of the conference chair, and making it convenient to use.

[0019] 2. The chair back rotates through the cooperation of the rotating seat and the chair back. The rotation is achieved through the rotating shaft. The structure is fixed by the cooperation of the wheels, limiting rods, pressure springs, fixing pins and fixing holes. The chair back can be fixed by simply moving the fixing pin, and the rotation range can be adjusted. This makes it easy to operate, adapts to the chair back needs of different people, and improves the comfort of use.

[0020] 3. An additional support structure is provided by the support rod, and space is provided by the telescopic groove, so that the support rod can cooperate with the first support leg and the second support leg to provide a telescopic and movable support structure. It is fixed by the cooperation of the support pin and the support hole, thereby providing a height-adjustable support structure, so as to adjust the height of the chair to meet the needs of different people for the conference instrument, enhance comfort and improve applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of a height-adjustable and foldable conference chair according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the meeting chair after folding and the cooperation between the bottom and the support leg in this utility model;

[0023] Figure 3 This is a cross-sectional view of the internal structure of the rotating seat and its connection with the rotating shaft after disassembly in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure in which the back of the chair seat and the unfolded support legs cooperate in this utility model;

[0025] Figure 5 This is a schematic diagram of the structure in which the bottom of the chair seat and the unfolded support legs cooperate in this utility model.

[0026] In the diagram: 1. Seat; 2. First support leg; 3. Support block; 4. Second support leg; 5. Rotating seat; 6. Backrest; 7. Rotating shaft; 8. Matching wheel; 9. Limiting rod; 10. Compression spring; 11. Fixing pin; 12. Fixing hole; 13. Telescopic groove; 14. Support rod; 15. Support pin; 16. Support hole; 17. Support plate; 18. Anti-slip pad; 19. Limiting block; 20. Rod groove; 21. Reinforcing rod; 22. Receiving frame; 23. Storage groove; 24. Sliding groove; 25. Traction block; 26. First return spring; 27. Second return spring. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figure 1-5 A height-adjustable and foldable conference chair includes a seat 1, a first support leg 2 rotatably connected to one side of the lower end of the seat 1, a support block 3 on the other side, a second support leg 4 rotatably connected to the lower end of the support block 3, the first support leg 2 and the second support leg 4 cooperating, a rotating seat 5 at one end of the seat 1, and a backrest 6 rotatably connected to the rotating seat 5.

[0031] The chair back 6 has a rotating shaft 7 at both ends, which rotates in conjunction with the rotating seat 5. The rotating shaft 7 has a mating wheel 8, and the rotating seat 5 has a sliding connection of a limiting rod 9. The mating wheel 8 and the limiting rod 9 are mated. A pressure spring 10 is provided between the limiting rod 9 and the inner wall of the rotating seat 5. A fixing pin 11 is provided in the rotating seat 5, and a fixing hole 12 is provided on the limiting rod 9. The fixing pin 11 and the fixing hole 12 are mated.

[0032] In this embodiment, when using the device, the chair seat 1 is used as the main body, and is supported by the first support leg 2 and the second support leg 4. This allows the chair seat 1 to provide support for the seat, and the backrest 6 can be leaned against for easy sitting. The first support leg 2, the second support leg 4 and the backrest 6 can all rotate, so that the backrest 6 rotates towards the chair seat 1 under the support of the rotating seat 5 and is close to the chair seat 1. The first support leg 2 and the second support leg 4 are also installed in sequence and rotate inward, so that the first support leg 2 is close to the lower end of the chair seat 1, and the second support leg 4 is located below the first support leg 2 under the support block 3. The device can be folded for easy storage and stacking.

[0033] More specifically, when leaning against the chair back 6, the angle of the chair back 6 can be adjusted, and the fixing pin 11 can be pulled outward to separate the fixing pin 11 from the limiting rod 9, thus releasing the fixation of the limiting rod 9. Force is applied to the chair back 6, causing the chair back 6 to rotate. Under the transmission of the rotating shaft 7, the chair back 6 causes the mating wheel 8 to rotate together. The mating wheel 8 will apply force to the limiting rod 9, and the contact arc structure will cause the limiting rod 9 to move downward without preventing the rotation of the mating wheel 8. When the chair back 6 rotates to a suitable angle, it stops rotating. The limiting rod 9 rises under the push of the pressure spring 10, contacts the mating wheel 8, and is locked into the mating wheel 8. Then, the fixing pin 11 is controlled to move and insert into the fixing hole 12 to position the limiting rod 9, thereby locking the mating wheel 8 in place. Thus, through the transmission of the rotating shaft 7, the chair back 6 is kept fixed.

[0034] Please see Figure 1 and Figure 2 As one embodiment of the telescopic support: both the first support leg 2 and the second support leg 4 are provided with telescopic grooves 13, and support rods 14 are slidably connected in the telescopic grooves 13. Both the first support leg 2 and the second support leg 4 are provided with support pins 15 on their side ends. Support holes 16 are provided on the support rods 14. Multiple support holes 16 are provided and are arranged vertically at equal intervals on the support rods 14. The support pins 15 cooperate with the support holes 16.

[0035] Specifically, when the equipment is unfolded, the height of the equipment is adjusted according to the user's height requirements. The support pin 15 is pulled outward to separate the support pin 15 from the support rod 14. Then, the support rod 14 is controlled to slide along the support groove to slide out a suitable length so that the support rod 14 cooperates with the corresponding first support leg 2 or second support leg 4 to form a suitable length. The support pin 15 is then inserted into the corresponding support hole 16 to support the support rod 14.

[0036] Please see Figure 1 As a further embodiment of the support rod: the lower end of the support rod 14 is provided with a support plate 17, and the lower end of the support plate 17 is provided with an anti-slip pad 18.

[0037] Specifically, the support plate 17 increases the contact area, improving the stability of the support, and the anti-slip pad 18 contacts the ground, further enhancing stability.

[0038] Please see Figure 1 and Figure 2 As a further embodiment of the chair seat: the lower ends of the chair seat 1 and the support block 3 are provided with limiting blocks 19, which cooperate with the corresponding first support leg 2 and second support leg 4 respectively.

[0039] Specifically, the first support leg 2 and the second support leg 4 are restricted by the limiting block 19 to keep the unfolding of the first support leg 2 and the second support leg 4 stable and to prevent the rotation range from being too large and losing the support effect.

[0040] Please see Figure 4 and Figure 5 As a further embodiment of the support leg: a rod groove 20 is provided on the side end of the first support leg 2, and a reinforcing rod 21 is rotatably connected in the rod groove 20; a receiving frame 22 is rotatably connected on the side end of the second support leg 4.

[0041] Specifically, after the first support leg 2 and the second support leg 4 are deployed, the reinforcing rod 21 is rotated out so that the reinforcing rod 21 cooperates with the receiving frame 22. With the support of the receiving frame 22, the reinforcing rod 21 presses against the second support leg 4, thereby maintaining the deployment range of the first support leg 2 and the second support leg 4.

[0042] Please see Figure 4 As a further implementation of the first support leg: a storage groove 23 is provided on the side end of the first support leg 2, and the storage groove 23 cooperates with the receiving frame 22.

[0043] Specifically, the space provided by the storage slot 23 facilitates the storage of the receiving frame 22 when the device is stored, avoiding interference with the first support leg 2.

[0044] Please see Figures 1-3 As a further embodiment of the fixing pin: the seat 1 has sliding grooves 24 at both ends, and a traction block 25 is provided in the sliding groove 24. The traction block 25 is connected to the fixing pin 11, and a first return spring 26 is provided between the traction block 25 and the inner wall of the sliding groove 24.

[0045] Specifically, by controlling the traction block 25 to slide along the sliding groove 24, the movement of the fixing pin 11 can be easily controlled, and under the action of the first reset spring 26, the fixing pin 11 is reset and fixed.

[0046] Please see Figure 1 and Figure 2 As a further implementation of the support pin: a second return spring 27 is provided on one side of the support pin 15, and the support pin 15 cooperates with the corresponding first support leg 2 or second support leg 4 through the second return spring 27.

[0047] Specifically, by tightening the second return spring 27, the support pin 15 is prevented from falling off and the support pin 15 is reset, ensuring the fixation of the support rod 14.

[0048] In summary, during the use or operation of the overall equipment:

[0049] When using the equipment, the seat 1 serves as the main body, supported by the first support leg 2 and the second support leg 4. This allows the seat 1 to provide support for the chair, while the backrest 6 provides a comfortable place to sit. The first support leg 2, the second support leg 4, and the backrest 6 can all rotate. With the support of the rotating seat 5, the backrest 6 rotates towards the seat 1, pressing against it. The first support leg 2 and the second support leg 4 also rotate inwards in sequence, so that the first support leg 2 is pressed against the lower end of the seat 1, and the second support leg 4, supported by the support block 3, is positioned below the first support leg 2. The equipment can be folded for easy storage and stacking. When unfolded, simply... The operation can be reversed. When the first support leg 2 and the second support leg 4 are unfolded, the limiting block 19 restricts the unfolding of the first support leg 2 and the second support leg 4, so that the unfolding of the first support leg 2 and the second support leg 4 remains stable and avoids excessive rotation and loss of support effect. Under the support of the support block 3, the lower part of the second support leg 4 is at the same height as the lower part of the first support leg 2. After unfolding, the reinforcing rod 21 is rotated out of the rod groove 20 so that the reinforcing rod 21 cooperates with the receiving frame 22. Under the support of the receiving frame 22, it abuts against the second support leg 4, thereby maintaining the unfolding range of the first support leg 2 and the second support leg 4.

[0050] During equipment deployment, the height of the equipment is adjusted according to the user's height requirements. The support pin 15 is pulled outward to separate it from the support rod 14. Then, the support rod 14 is controlled to slide along the support groove to a suitable length, so that it engages with the corresponding first support leg 2 or second support leg 4 to form a suitable length. The support pin 15 is then inserted into the corresponding support hole 16 to support the support rod 14. The second return spring 27 tightens the support pin 15 to prevent it from falling off and resets it, ensuring the fixation of the support rod 14. The support rod 14 increases the contact area through the support plate 17, improving the stability of the support. It also contacts the ground through the anti-slip pad 18, further enhancing stability.

[0051] When leaning against the chair back 6, the angle of the chair back 6 can be adjusted. By controlling the traction block 25 to slide along the sliding groove 24, the movement of the fixing pin 11 can be easily controlled. Pulling the fixing pin 11 outward separates it from the limiting rod 9, releasing the fixation of the limiting rod 9. Force is applied to the chair back 6, causing the chair back 6 to rotate. Under the transmission of the rotating shaft 7, the chair back 6 causes the mating wheel 8 to rotate together. The mating wheel 8 will apply force to the limiting rod 9. The contact arc structure will cause the limiting rod 9 to move downward without preventing the rotation of the mating wheel 8. When the chair back 6 rotates to a suitable angle, it stops rotating. The limiting rod 9 rises under the push of the pressure spring 10, contacts the mating wheel 8, and is locked into the mating wheel 8. The traction block 25 is released. Under the action of the first return spring 26, the fixing pin 11 is controlled to move, so that the fixing pin 11 is reset and inserted into the fixing hole 12 to position the limiting rod 9. Thus, the limiting rod 9 locks the mating wheel 8 in place. Therefore, through the transmission of the rotating shaft 7, the chair back 6 is kept fixed.

[0052] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable and foldable conference chair, comprising a seat (1), characterized in that: The lower end of the chair seat (1) is rotatably connected to a first support leg (2) on one side and a support block (3) on the other side. The lower end of the support block (3) is rotatably connected to a second support leg (4). The first support leg (2) and the second support leg (4) cooperate with each other. One end of the chair seat (1) is provided with a rotating seat (5), and a chair back (6) is rotatably connected to the rotating seat (5). The backrest (6) is provided with rotating shafts (7) at both ends. The rotating shafts (7) are rotatably engaged with the rotating seat (5). The rotating shafts (7) are provided with mating wheels (8). The rotating seat (5) is slidably connected with a limiting rod (9). The mating wheels (8) are engaged with the limiting rod (9). The limiting rod (9) is connected with the inner wall of the rotating seat (5) with a pressure spring (10). The rotating seat (5) is provided with a fixing pin (11). The limiting rod (9) is provided with a fixing hole (12). The fixing pin (11) is engaged with the fixing hole (12).

2. The height-adjustable and foldable conference chair according to claim 1, characterized in that: The first support leg (2) and the second support leg (4) are provided with telescopic grooves (13), and a support rod (14) is slidably connected in the telescopic groove (13). The first support leg (2) and the second support leg (4) are provided with support pins (15) on their side ends. The support rod (14) is provided with support holes (16). Multiple support holes (16) are provided and are arranged vertically at equal intervals on the support rod (14). The support pins (15) cooperate with the support holes (16).

3. A height-adjustable and foldable conference chair according to claim 2, characterized in that: The lower end of the support rod (14) is provided with a support plate (17), and the lower end of the support plate (17) is provided with an anti-slip pad (18).

4. A height-adjustable and foldable conference chair according to claim 2, characterized in that: The lower ends of the seat (1) and the support block (3) are provided with limiting blocks (19), which cooperate with the corresponding first support leg (2) and second support leg (4).

5. A height-adjustable and foldable conference chair according to claim 4, characterized in that: The first support leg (2) has a rod groove (20) on its side end, and a reinforcing rod (21) is rotatably connected in the rod groove (20). The second support leg (4) has a receiving frame (22) rotatably connected to its side end.

6. A height-adjustable and foldable conference chair according to claim 5, characterized in that: The first support leg (2) has a storage groove (23) on its side end, and the storage groove (23) cooperates with the receiving frame (22).

7. A height-adjustable and foldable conference chair according to claim 1, characterized in that: The seat (1) has sliding grooves (24) at both ends. A traction block (25) is provided in the sliding groove (24). The traction block (25) is connected to the fixing pin (11). A first return spring (26) is provided between the traction block (25) and the inner wall of the sliding groove (24).

8. A height-adjustable and foldable conference chair according to claim 2, characterized in that: A second return spring (27) is provided on one side of the support pin (15), and the support pin (15) cooperates with the corresponding first support leg (2) or second support leg (4) through the second return spring (27).

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