High-stability multifunctional office chair
By designing a locking component and footpad mechanical structure that automatically locks the casters using the user's gravity, the problem of office chair slippage was solved, achieving a multi-functional office chair design with high stability and comfort.
Patent Information
- Application Number
- CN202520750738.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-21
AI Technical Summary
Existing office chairs, due to their casters, lack an automatic anti-slip mechanism, making them prone to slipping during use and affecting stability.
A locking component was designed to automatically lock and unlock the pulleys using the user's own weight. It includes a first limiting plate, a first spring, a fixed rod, a horizontal bar, a vertical bar, and a curved plate with mechanical linkage. Combined with anti-slip particles to increase friction, it ensures that the chair will not slip during use.
The system automatically locks the casters when the user sits down and unlocks them when the user leaves, improving the stability and comfort of the office chair, preventing slippage, and further enhancing stability by increasing friction with the floor through the foot pads and anti-slip particles.
Smart Images
Figure CN223817217U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of office chair technology, and in particular relates to a highly stable multifunctional office chair. Background Technology
[0002] Office chairs are chairs provided for convenience during daily work and social activities. To increase their mobility, existing office chairs generally have casters on the bottom of their legs. However, because office chairs with casters are too flexible, and the casters often lack automatic anti-slip mechanisms, the chairs are prone to slipping during use due to instability, thus affecting their normal operation. Utility Model Content
[0003] The purpose of this invention is to provide a highly stable, multifunctional office chair. When the user sits on the chair, the casters lock under the user's own weight to prevent slippage. When the user leaves the chair, the casters automatically unlock for easy relocation.
[0004] The technical solution adopted by this utility model to solve the above problems is: a highly stable multifunctional office chair, comprising:
[0005] A chair seat, on which a backrest is fixedly connected, and a support rod is rotatably connected to the bottom center of the chair seat. A hollow support tube is movably connected to the lower outer side of the support rod, and a roller is rotatably connected to the lower outer side of the hollow support tube via a bracket.
[0006] The locking assembly includes a first limiting plate fixedly connected to the bottom end of the support rod and movably connected to the hollow support tube; a first spring disposed inside the hollow support tube and pushing upward against the first limiting plate; a fixed rod fixedly connected to the outside of the support rod; a horizontal bar movably connected to the bracket; a first connecting rod hinged to the horizontal bar and the fixed rod via a hinge; a vertical bar slidably connected to the bracket; a second connecting rod hinged to the horizontal bar and the vertical bar via a hinge; and an arc-shaped plate fixedly connected to the bottom end of the vertical bar for friction locking the roller.
[0007] A further preferred technical solution is as follows: a hollow tube is fixedly connected to one side of the chair seat, a second limiting plate is slidably connected inside the hollow tube, a movable rod is fixedly connected to the bottom end of the second limiting plate and the bottom end of the movable rod extends to the outside of the hollow tube, a foot pad is fixedly connected to the bottom end of the movable rod, and a second spring for pushing the second limiting plate upward is sleeved on the movable rod.
[0008] A further preferred technical solution is that armrests are fixedly connected to the chair seat via a connecting frame.
[0009] A further preferred technical solution is that: both sides of the first limiting plate are fixedly connected to limiting blocks, and the inner wall of the hollow support tube is provided with a limiting groove corresponding to the position of the limiting block and is slidably connected to the limiting block.
[0010] A further preferred technical solution is that the two ends of the first spring are fixedly connected to the first limiting plate and the bottom of the inner cavity of the hollow support tube, respectively.
[0011] A further preferred technical solution is that a guide member is fixedly connected to the bracket, and the guide member is slidably connected to the crossbar on the same side.
[0012] A further preferred technical solution is that the bottom surface of the arc-shaped plate is provided with a number of first anti-slip particles.
[0013] A further preferred technical solution is that an anti-slip pad is added to the top of the foot pad.
[0014] A further preferred technical solution is that the bottom of the foot pad is provided with a number of second anti-slip particles.
[0015] A further preferred technical solution is that the two ends of the second spring are fixedly connected to the second limiting plate and the inner wall of the hollow tube, respectively.
[0016] In summary, this utility model has the following advantages:
[0017] 1. When a user sits on the chair, the user's weight and the movement between the first limiting plate and the hollow support tube cause the support rod to move vertically downwards and compress the first spring. The downward movement of the support rod also causes the fixed rod to move downwards. The hinge between the fixed rod and the crossbar and the first connecting rod, and the sliding engagement between the crossbar and the guide member, allows the crossbar to be pushed outwards. The hinge between the crossbar and the vertical rod and the second connecting rod, and the sliding engagement between the vertical rod and the bracket, allows the arc-shaped plate to move vertically downwards and contact the roller surface. The added first anti-slip particles increase the friction between the arc-shaped plate and the roller surface, thus automatically preventing the office chair from slipping when seated. It is highly practical. When the user leaves the office chair, the rebound of the first spring causes the arc-shaped plate to automatically return to its original position, thereby automatically releasing the restriction on the roller.
[0018] 2. This utility model can increase the comfort of the user's feet by adding a foot pad. At the same time, when the user's feet are placed on the foot pad, the foot pad can be pressed down and made to contact the ground by stepping on it and the movement between the movable rod and the hollow tube. The added second anti-slip particles can increase the friction between it and the ground, thereby further improving the stability of the office chair during use. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;
[0021] Figure 3 This is a longitudinal sectional three-dimensional schematic diagram of the connection structure between the support rod and the hollow support tube of this utility model;
[0022] Figure 4 This is a longitudinal sectional perspective view of the hollow tube and movable rod connection structure of this utility model;
[0023] Figure 5 This is a three-dimensional structural diagram of the foot pad of this utility model, viewed from below.
[0024] In the attached diagram, the components represented by each number are as follows: 1. Seat; 2. Backrest; 3. Support rod; 4. Hollow support tube; 5. Roller; 6. Armrest; 7. Limiting block; 8. Guide component; 101. First limiting plate; 102. First spring; 103. Fixed rod; 104. Horizontal bar; 105. First connecting rod; 106. Vertical bar; 107. Second connecting rod; 108. Arc plate; 201. Hollow tube; 202. Second limiting plate; 203. Movable rod; 204. Foot pad; 205. Second spring; 206. Second anti-slip particle. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to the accompanying drawings.
[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0027] Example:
[0028] Please combine Figures 1-5 This embodiment of a highly stable multifunctional office chair includes:
[0029] A chair seat 1, a chair back 2 is fixedly connected to the chair seat 1, a support rod 3 is rotatably connected to the bottom center of the chair seat 1, a hollow support tube 4 is movably connected to the lower outer side of the support rod 3, and rollers 5 are rotatably connected to the lower outer side of the hollow support tube 4 through a bracket at equal intervals.
[0030] The locking assembly includes a first limiting plate 101 fixedly connected to the bottom end of the support rod 3 and movably connected to the hollow support tube 4. A first spring 102 is installed inside the hollow support tube 4, with both ends of the first spring 102 fixedly connected to the first limiting plate 101 and the bottom of the inner cavity of the hollow support tube 4, respectively. Fixed rods 103 are equidistantly and circumferentially fixedly connected to the outside of the support rod 3. A horizontal rod 104 is movably connected to the bracket, and a first connecting rod 105 is symmetrically hinged to the horizontal rod 104 and the fixed rod 103 on the same side via a hinge. A vertical rod 106 is slidably connected to the bracket, and the vertical rod 106 is symmetrically hinged to the horizontal rod 104 on the same side via a hinge. The second connecting rod 107 is connected to the bottom of the vertical rod 106, and the arc plate 108 is fixedly connected to the bottom end. Limiting blocks 7 are fixedly connected to both sides of the first limiting plate 101. The inner wall of the hollow support tube 4 is provided with a limiting groove corresponding to the position of the limiting block 7 and is slidably connected to the limiting block 7 to facilitate the rotation of the seat 1. A guide 8 is fixedly connected to the bracket and is slidably connected to the cross bar 104 on the same side, which can play a certain guiding role in the horizontal movement of the cross bar 104. The bottom surface of the arc plate 108 is provided with a first anti-slip particle, which can increase the friction between the arc plate 108 and the surface of the roller 5 and improve the restriction effect on the roller 5.
[0031] In this embodiment, when the user sits down, the seat 1 is pressed down by gravity, causing the support rod 3 to move downwards and compress the first spring 102. The descent of the support rod 3 drives the first connecting rod 105 through the fixed rod 103, causing the horizontal rod 104 to move horizontally, which in turn pushes the vertical rod 106 down the support frame through the second connecting rod 107, ultimately causing the arc plate 108 to press tightly against the surface of the roller 5 to form a friction lock. When the user gets off, the first spring 102 elastically recovers and pushes the support rod 3 upwards, the linkage mechanism moves in the opposite direction, the vertical rod 106 drives the arc plate 108 to disengage from the roller 5, and the pulley returns to a free rotation state. Automatic locking / unlocking is achieved through the mechanical balance of the user's weight and the spring, without the need for manual operation of the control mechanism, which conforms to ergonomic usage habits.
[0032] Two sets of hollow tubes 201 are symmetrically fixedly connected to one side of the seat 1. A second limiting plate 202 is slidably connected inside the hollow tube 201. A movable rod 203 is fixedly connected to the bottom end of the second limiting plate 202, and the bottom end of the movable rod 203 extends to the outside of the hollow tube 201. The bottom ends of the two sets of movable rods 203 are fixedly connected to the same foot pad 204. A second spring 205 is sleeved on the upper outer side of the movable rod 203. The two ends of the second spring 205 are fixedly connected to the second limiting plate 202 and the inner wall of the hollow tube 201, respectively. An anti-slip pad is added to the top of the foot pad 204 to prevent the feet from slipping on the foot pad 204. A second anti-slip particle 206 is added to the bottom of the foot pad 204 to increase the friction between the foot pad 204 and the ground, further improving the stability of the office chair.
[0033] The implementation principle of a high-stability multifunctional office chair in this application embodiment is as follows: During use, the rolling action of the rollers 5 facilitates movement of the office chair. When seated, the user's own weight and the movable cooperation between the first limiting plate 101 and the hollow support tube 4 cause the support rod 3 to move vertically downwards and compress the first spring 102. The downward movement of the support rod 3 also drives the fixed rod 103 to move downwards. Utilizing the hinge between the fixed rod 103, the horizontal rod 104, and the first connecting rod 105, and the sliding cooperation between the horizontal rod 104 and the guide member 8, the horizontal rod 104 can be pushed outwards. Furthermore, the hinge between the horizontal rod 104 and the vertical rod 106 and the second connecting rod 107, and the sliding cooperation between the vertical rod 106 and the bracket, allows the arc-shaped plate 108 to move vertically downwards and contact the surface of the rollers 5. The added first anti-slip particles can increase... The friction between the curved plate 108 and the surface of the roller 5 automatically prevents the office chair from slipping when seated. The added foot pad 204 increases the comfort of the user's feet. At the same time, when the user's feet are placed on the foot pad 204, stepping on the foot pad 204 and the movement between the movable rod 203 and the hollow tube 201 can press the foot pad 204 down and make it contact the ground. The added second anti-slip particles 206 can increase the friction between it and the ground, thereby further improving the stability of the office chair during use. When the user leaves the office chair, the curved plate 108 will automatically return to its original position under the rebound of the first spring 102, thereby automatically releasing the restriction on the roller 5. Under the rebound of the second spring 205, the foot pad 204 will automatically return to its original position.
[0034] Furthermore, a further improvement is that armrests 6 are symmetrically fixed to the seat 1 via a connecting frame, which makes it easier for users to place their hands to improve comfort.
[0035] Furthermore, the same or similar element symbols are used as far as possible in the accompanying drawings and description to refer to the same or similar parts or steps. The drawings are presented in a simplified form and are not drawn to scale. For convenience and clarity only, directional terms such as top, bottom, front, back, left, right, front, back, upward, above, above, below, behind, and front may be used to refer to the drawings. These and similar directional terms should not be construed as limiting the scope of this disclosure in any way.
Claims
1. A highly stable multifunctional office chair, characterized in that, include: A chair seat (1) is fixedly connected to a backrest (2). A support rod (3) is rotatably connected to the bottom center of the chair seat (1). A hollow support tube (4) is movably connected to the lower outer side of the support rod (3). A roller (5) is rotatably connected to the lower outer side of the hollow support tube (4) through a bracket. The locking assembly includes a first limiting plate (101) fixedly connected to the bottom end of the support rod (3) and movably connected to the hollow support tube (4), a first spring (102) disposed inside the hollow support tube (4) and pushing the first limiting plate (101) upward, a fixing rod (103) fixedly connected to the outside of the support rod (3), a crossbar (104) movably connected to the bracket, a first connecting rod (105) hinged to the crossbar (104) and the fixing rod (103) by a hinge, a vertical rod (106) slidably connected to the bracket, a second connecting rod (107) hinged to the crossbar (104) and the vertical rod (106) by a hinge, and an arc-shaped plate (108) fixedly connected to the bottom end of the vertical rod (106) for friction locking the roller (5).
2. The high-stability multifunctional office chair according to claim 1, characterized in that, A hollow tube (201) is fixedly connected to one side of the seat (1). A second limiting plate (202) is slidably connected inside the hollow tube (201). A movable rod (203) is fixedly connected to the bottom end of the second limiting plate (202), and the bottom end of the movable rod (203) extends to the outside of the hollow tube (201). A foot pad (204) is fixedly connected to the bottom end of the movable rod (203). A second spring (205) is sleeved on the movable rod (203) for pushing the second limiting plate (202) upward.
3. The high-stability multifunctional office chair according to claim 1, characterized in that, The chair seat (1) is fixedly connected to the armrests (6) via a connecting frame.
4. The high-stability multifunctional office chair according to claim 1, characterized in that, Both sides of the first limiting plate (101) are fixedly connected to limiting blocks (7), and the inner wall of the hollow support tube (4) is provided with a limiting groove corresponding to the position of the limiting block (7) and is slidably connected to the limiting block (7).
5. A highly stable multifunctional office chair according to claim 1, characterized in that, The two ends of the first spring (102) are fixedly connected to the bottom of the inner cavity of the first limiting plate (101) and the hollow support tube (4), respectively.
6. The high-stability multifunctional office chair according to claim 1, characterized in that, The bracket is fixedly connected to a guide (8), and the guide (8) is slidably connected to the crossbar (104) on the same side.
7. A high-stability multifunctional office chair according to claim 1, characterized in that, The bottom surface of the arc plate (108) is provided with a number of first anti-slip particles.
8. A highly stable multifunctional office chair according to claim 2, characterized in that, The top of the foot pad (204) is provided with an anti-slip pad.
9. A highly stable multifunctional office chair according to claim 2, characterized in that, The bottom of the foot pad (204) is provided with a number of second anti-slip particles (206).
10. A highly stable multifunctional office chair according to claim 2, characterized in that, The two ends of the second spring (205) are fixedly connected to the second limiting plate (202) and the inner wall of the hollow tube (201), respectively.