Chair leg capable of limiting rotation angle of swivel chair
By designing the chair foot of the limit shaft assembly to limit the rotation angle of the swivel chair, the problem of easy collision during the rotation of the swivel chair is solved, and the safety performance of the swivel chair is improved.
Patent Information
- Application Number
- CN202422026618.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing swivel chairs are prone to collision with other furniture during the 360-degree rotation, which poses a safety hazard. How to design a foot that can limit the rotation angle of the swivel chair.
A chair foot consisting of a limit shaft assembly is designed. The limit shaft assembly consists of a limit sleeve, a rotating shaft and a limit ring. The side surface of the limit ring is protruding with a limit block, and the top of the limit sleeve is protruding with a limit arc plate toward the top. The limit block is blocked by the limit arc plate, so that the rotation shaft can only rotate within a specific angle range.
By limiting the rotation angle of the swivel chair, the safety performance of the swivel chair is improved, avoiding the risk of swivel chair colliding with other furniture in occasions where space is limited.
Smart Images
Figure CN222955120U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of swivel chair accessories, and particularly relates to a chair leg capable of limiting the rotation angle of a swivel chair. Background Art
[0002] A swivel chair is a chair that can be easily rotated and is one of the most commonly used furniture. Currently, swivel chairs on the market can basically rotate 360 degrees arbitrarily. However, for some occasions with limited space, during the 360-degree rotation of a swivel chair, it is easy to collide with other furniture, posing a potential safety hazard. How to design a chair leg that can make the swivel chair rotate only within a specific angle range has become an urgent technical problem in this field. Content of the Utility Model
[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a chair leg capable of limiting the rotation angle of a swivel chair.
[0004] The technical solution adopted by the utility model is as follows: A chair leg capable of limiting the rotation angle of a swivel chair includes a limit rotating shaft assembly, and a mounting seat and a leg body respectively arranged above and below the limit rotating shaft assembly; wherein,
[0005] The limit rotating shaft assembly includes a limit sleeve fixedly connected with the leg body, a rotating shaft rotating relative to the limit sleeve, and a limit ring synchronously rotating with the rotating shaft. The limit ring is movably arranged above the limit sleeve. A limit block protrudes outward from the side surface of the limit ring, and a limit arc plate protrudes upward from the top of the limit sleeve.
[0006] The mounting seat rotates synchronously with the rotating shaft;
[0007] A central hole for the limit sleeve to be embedded is arranged at the center of the leg body.
[0008] Preferably, a circumferential snap ring protrudes radially outward from the middle of the rotating shaft, and the limit ring is located below the circumferential snap ring.
[0009] Preferably, a mounting flange for clamping the limit ring is arranged below the circumferential snap ring of the rotating shaft.
[0010] Preferably, the outer side surface of the mounting flange is oval, and the inner side surface of the limit ring is an oval mounting hole adapted to the mounting flange.
[0011] Preferably, the rotating shaft is rotationally connected with the limit sleeve through a guide sleeve, and the guide sleeve is arranged below the limit ring.
[0012] Preferably, a circumferential flange is arranged at the top of the guide sleeve, and a stepped clamping portion for clamping the circumferential flange is arranged at the top of the inner side surface of the limit sleeve.
[0013] Preferably, a support ring for clamping the bottom of the guide sleeve extends radially outward at the bottom of the rotating shaft.
[0014] Preferably, an upper sleeve fixedly connected to the upper end of the rotating shaft is provided at the center of the mounting base.
[0015] Preferably, the upper sleeve is provided with a rotating shaft hole for the upper end of the limiting rotating shaft assembly to be embedded.
[0016] Preferably, the leg body includes a rotating shaft sleeve and five legs evenly distributed on the outer side of the rotating shaft sleeve.
[0017] Preferably, a decorative sleeve is sleeved outside the rotating shaft sleeve, and the top of the decorative sleeve extends to the bottom of the mounting base.
[0018] Preferably, a detachable foot pad is provided at the bottom of the end of the leg away from the limiting rotating shaft assembly.
[0019] The utility model has the following advantages compared with the prior art:
[0020] For the chair leg of the utility model, a limiting rotating shaft assembly is provided. The limiting ring that rotates synchronously with the rotating shaft can rotate relative to the limiting sleeve, and then the limiting arc plate on the limiting sleeve is used to block the limiting block on the limiting ring, so that the rotating shaft fixedly connected to the limiting ring can only rotate within a specific angle range, thereby improving the safety performance of the swivel chair. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the utility model.
[0022] Figure 2 is an exploded structural view of the utility model.
[0023] Figure 3 is a schematic structural diagram of the limiting rotating shaft assembly.
[0024] Figure 4 is a longitudinal sectional view of the utility model.
[0025] The reference numerals in the figures are shown as:
[0026] 1 - limiting rotating shaft assembly, 11 - limiting sleeve, 111 - limiting arc plate, 112 - stepped clamping portion, 12 - rotating shaft, 121 - circumferential snap ring, 122 - mounting flange, 123 - support ring, 13 - limiting ring, 131 - limiting block, 132 - elliptical mounting hole, 14 - guide sleeve, 141 - buffer tooth, 142 - circumferential flange, 2 - mounting base, 21 - upper sleeve, 211 - rotating shaft hole, 22 - seat mounting hole, 3 - leg body, 31 - central hole, 32 - rotating shaft sleeve, 33 - leg, 34 - decorative sleeve, 35 - foot pad, 351 - groove. Detailed implementation mode
[0027] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in combination with implementation cases and drawings. The present utility model can be implemented in the following manner:
[0028] Referring to Figures 1-4 , a chair leg capable of limiting the rotation angle of a swivel chair, comprising a limit rotating shaft assembly 1, and a mounting seat 2 and a leg body 3 respectively arranged above and below the limit rotating shaft assembly 1.
[0029] Among them, the limit rotating shaft assembly 1 includes a limit sleeve 11 fixedly connected to the leg body 3, a rotating shaft 12 rotating relative to the limit sleeve 11, and a limit ring 13 rotating synchronously with the rotating shaft 12. The limit ring 13 is movably arranged above the limit sleeve 11. A limit block 131 protrudes outward from the side surface of the limit ring 13, and a limit arc plate 111 protrudes upward from the top of the limit sleeve 11. In this embodiment, the limit arc plate 111 on the limit sleeve 11 is used to block the limit block 131 on the limit ring 13, so that the rotating shaft 12 fixedly connected to the limit ring 13 can only rotate within a specific angle range. When the limit block 131 rotates to the end of the limit arc plate 111, it stops rotating. That is, the arc length of the limit arc plate 111 plus the central angle corresponding to the limit block 131 is the rotation limit angle of the rotating shaft 12, and the angle range within which the rotating shaft 12 can rotate is 360° minus the rotation limit angle. If you want to reduce the rotation angle range of the swivel chair, you can choose to replace the limit ring 13 with a limit block 131 with a longer arc or the limit sleeve 11 with a limit arc plate 111 with a longer arc.
[0030] In this embodiment, a circumferential snap ring 121 protrudes radially outward from the middle of the rotating shaft 12, and the limit ring 13 is located below the circumferential snap ring 121. An installation flange 122 for clamping the limit ring 13 is arranged below the circumferential snap ring 121 on the rotating shaft 12. During assembly, the limit ring 13 can be directly sleeved on the installation flange 122. The outer side surface of the installation flange 122 is elliptical, and the inner side surface of the limit ring 13 is an elliptical installation hole 132 adapted to the installation flange 122. This design can prevent the limit ring 13 from slipping during the rotation process following the rotating shaft 12, and ensure that the limit ring 13 rotates synchronously with the rotating shaft 12.
[0031] The described rotating shaft 12 is rotatably connected to the limit sleeve 11 through a guide sleeve 14, and the guide sleeve 14 is arranged below the limit ring 13. With this design, the circumferential snap ring 121 and the guide sleeve 14 clamp the limit ring 13, enabling it to rotate only on the horizontal plane where the limit arc plate 111 is located. The guide sleeve 14 is made of plastic material, and a number of buffer teeth 141 are evenly distributed on the side surface of the guide sleeve 14, which can reduce the shaking degree of the chair during rotation. A circumferential flange 142 is provided at the top of the guide sleeve 14, and a stepped clamping portion 112 for clamping the circumferential flange 142 is provided at the top of the inner side surface of the limit sleeve 11. A support ring 123 for clamping the bottom of the guide sleeve 14 extends radially outward at the bottom of the rotating shaft 12, preventing the guide sleeve 14 from detaching from the rotating shaft 12, so that the guide sleeve 14 can only rotate between the limit ring 13 and the support ring 123.
[0032] In this embodiment, a central hole 31 for the limit sleeve 11 to be embedded is provided at the center of the foot body 3. The foot body 3 includes a rotating shaft sleeve 32 and five feet 33 evenly distributed on the outer side surface of the rotating shaft sleeve 32. The inner side surface of the rotating shaft sleeve 32 is fixedly connected to the outer side surface of the limit sleeve 11. A decorative sleeve 34 is sleeved outside the rotating shaft sleeve 32, and the top of the decorative sleeve 34 extends to the bottom of the mounting seat 2. With this design, not only does the appearance of the chair leg become more beautiful, but also it can prevent dust from entering the limit rotating shaft assembly 1. A detachable foot pad 35 is provided at the bottom of the end of the foot 33 away from the limit rotating shaft assembly 1. A groove 351 adapted to the shape of the free end of the foot 33 is provided at the top of the foot pad 35. The foot pad 35 is made of a buffer material, which can not only play a buffering role to prevent the foot 33 from being scratched, but also keep the bottoms of the five feet 33 balanced.
[0033] In this embodiment, the mounting seat 2 rotates synchronously with the rotating shaft 12; a upper sleeve 21 fixedly connected to the upper end of the rotating shaft 12 is provided at the center of the mounting seat 2, and a rotating shaft hole 211 for the upper end of the limit rotating shaft assembly 1 to be embedded is provided in the upper sleeve 21. The upper sleeve 21 is fixedly connected to the mounting seat 2. A number of seat mounting holes 22 for the seat of the mounting seat 2 are provided on the mounting seat 2. During assembly, the seat is placed on the mounting seat 2, and then fixing parts such as screws or bolts are used to pass through the seat mounting holes 22 to fix the seat on the mounting seat 2, so that the seat can rotate synchronously with the rotating shaft 12.
[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A chair leg capable of limiting the rotation angle of a swivel chair, characterized in that: The invention comprises a limit rotating shaft assembly (1), and a mounting seat (2) and a support foot body (3) respectively arranged above and below the limit rotating shaft assembly (1); wherein the limit rotating shaft assembly (1) comprises a limit sleeve (11) fixedly connected to the support foot body (3), a rotation shaft (12) rotating relative to the limit sleeve (11), and a limit ring (13) rotating synchronously with the rotation shaft (12); the limit ring (13) is movably arranged above the limit sleeve (11); a limit block (131) protrudes outwards from the side surface of the limit ring (13); and a limit arc plate (111) protrudes upwards from the top of the limit sleeve (11); The mounting seat (2) rotates synchronously with the rotating shaft (12); A central hole (31) for the limiting sleeve (11) to be embedded is arranged at the center of the support leg body (3).
2. A chair leg capable of limiting the rotation angle of a swivel chair according to claim 1, characterized in that: A circumferential snap ring (121) protrudes radially outward from the middle of the rotating shaft (12), and the limiting ring (13) is located below the circumferential snap ring (121); and a mounting flange (122) for clamping the limiting ring (13) is provided on the rotating shaft (12) below the circumferential snap ring (121).
3. The chair leg capable of limiting the rotation angle of a swivel chair according to claim 2, characterized in that: The outer side surface of the mounting flange (122) is elliptical, and the inner side surface of the limiting ring (13) is an elliptical mounting hole (132) adapted to the mounting flange (122).
4. The chair leg capable of limiting the rotation angle of a swivel chair according to claim 3, characterized in that: The rotating shaft (12) is rotatably connected to the limiting sleeve (11) via a guide sleeve (14), and the guide sleeve (14) is arranged below the limiting ring (13).
5. The chair leg capable of limiting the rotation angle of a swivel chair according to claim 4, characterized in that: The top of the guide sleeve (14) is provided with a circumferential flange (142), and the top of the inner side surface of the limiting sleeve (11) is provided with a stepped clamping portion (112) for clamping the circumferential flange (142).
6. The chair leg capable of limiting the rotation angle of a swivel chair according to claim 5, characterized in that: A supporting ring (123) is radially extended outward from the bottom of the rotating shaft (12) and is used for clamping the bottom of the guide sleeve (14).
7. A chair leg capable of limiting the rotation angle of a swivel chair according to any one of claims 1 to 5, characterized in that: An upper sleeve (21) fixedly connected to the upper end of the rotating shaft (12) is arranged at the center of the mounting seat (2).
8. A chair foot capable of limiting the rotation angle of a swivel chair according to any one of claims 1 to 5, characterized in that: The support leg body (3) comprises a rotating shaft sleeve (32) and five support legs (33) evenly distributed on the outer side of the rotating shaft sleeve (32).
9. The chair foot capable of limiting the rotation angle of a swivel chair according to claim 8, characterized in that: The outer cover of the rotating shaft sleeve (32) is provided with a decorative sleeve (34), and the top of the decorative sleeve (34) extends to the bottom of the mounting seat (2).
10. The chair foot capable of limiting the rotation angle of a swivel chair according to claim 9, characterized in that: The support leg (33) is provided with a detachable foot pad (35) at the bottom of one end away from the position-limiting rotating shaft assembly (1).