Chair leg assembly structure and seat

Abstract

The utility model relates to a chair leg assembly structure and a chair. The technical problem that an existing detachable chair leg is unreasonable in design is solved. The chair leg assembling structure comprises a mounting base and a chair leg, the at least three chair legs are fixedly connected to the bottom of the mounting base, each chair leg comprises a sleeve part which is connected to the outer wall of the bottom of the mounting base in a sleeving mode and is axially connected end to end, and a supporting leg protruding in the radial direction is arranged on the outer wall of each sleeve part; the supporting legs are distributed in the circumferential direction along the center axis of the sleeve part, and the ends, away from the sleeve part, of the supporting legs are located on the same height horizontal plane. According to the chair leg assembly structure and the chair, the size of a chair leg disassembly and assembly structure is reduced, meanwhile, assembly of small parts is reduced, consumables are reduced, packaging and transportation are facilitated, the axial connection mode of the sleeve parts and stress in the vertical direction of the chair leg assembly position guarantee the supporting strength of the supporting leg body, the bearing pressure of the assembled chair leg is relieved, and the service life of the chair leg assembly structure is prolonged. Therefore, the same pressure-bearing performance as an integrated chair leg is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of seats and relates to a chair leg assembly structure and a seat. Background Art

[0002] For example, a Chinese patent document discloses a detachable swivel chair leg [202020694722.2], comprising a swivel chair leg base and a plurality of single legs connected to the swivel chair leg base. At the connection between the swivel chair leg base and the single legs, the swivel chair leg base is provided with a concave receiving cavity, and the single leg is provided with a receiving block for inserting into the receiving cavity. The receiving block is provided with a latch hole, and an elastic latch assembly is provided in the latch hole. A limiting hole cooperating with the elastic latch assembly is provided at the bottom of the receiving cavity.

[0003] The defects of the above technical solution are: the disassembly and assembly method of the swivel chair leg base and multiple single legs has a lower stress and pressure bearing performance than the structural strength of the integrated single leg, and the parts of the entire disassembly and assembly structure are small and numerous, and the transportation packaging is numerous and easy to lose. Utility Model Content

[0004] The purpose of the utility model is to provide a chair leg assembly structure and a seat in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The chair leg assembly structure comprises:

[0007] Install the base;

[0008] The chair legs have at least two groups and are fixedly connected to the bottom of the mounting base. The chair legs include sleeve portions that are sleeved on the outer wall of the bottom of the mounting base and are axially connected end to end. The outer wall of each sleeve portion is provided with at least two radially protruding supporting feet. The supporting feet are circumferentially distributed along the central axis of the mounting base and the end of each supporting foot away from the sleeve portion is located at the same height level.

[0009] Furthermore, a circumferential positioning structure is provided between adjacent sleeve portions, and the circumferential positioning structure includes at least one positioning notch provided at the end of the sleeve portion, and a positioning protrusion provided at the end of the adjacent sleeve portion and capable of correspondingly embedding into the positioning notch.

[0010] Furthermore, the support legs are arranged radially outward and obliquely downward along the sleeve portion, and when adjacent sleeve portions are axially connected and the support legs are located on the same side, the support legs at the upper end overlap the support legs at the lower end.

[0011] Furthermore, a circumferential positioning structure is provided between the sleeve portion and the outer wall of the mounting base, and the inner wall structure of the sleeve portion cooperates with the circumferential positioning structure and is sleeved on the outer wall of the mounting base.

[0012] Furthermore, the sleeve portion is provided with radially penetrated bolts, and the bolts pass through the sleeve portion and are connected to the mounting base.

[0013] Furthermore, adjacent sleeve parts are located at axially connected positions and have radially fitted overlapping surfaces, and the positioning notches and the positioning convex portions are respectively arranged on the overlapping surfaces on the adjacent sleeve parts.

[0014] Furthermore, a limiting step for the uppermost sleeve portion to contact is provided in the middle of the mounting base, and a limiting sleeve abutting against the bottom of the lowermost sleeve portion is detachably provided at the bottom of the mounting base.

[0015] Furthermore, one end of the supporting foot away from the sleeve portion is connected to a universal wheel.

[0016] Furthermore, the height of the lowest end of the universal wheel is lower than the height of the bottom end surface of the mounting base.

[0017] The utility model also provides a chair having the chair foot assembly structure as described above.

[0018] Compared with the prior art, the chair leg assembly structure and the seat adopt a method of assembling and disassembling multiple chair legs, which reduces the size of the chair leg structure while reducing the assembly of small parts, reducing consumables and facilitating packaging and transportation. In addition, the sleeve parts are axially connected, and the force in the vertical direction of the chair leg assembly position is guaranteed, which ensures the supporting strength of the supporting leg body and reduces the pressure of the assembled chair leg, so as to achieve the same pressure-bearing performance as an integrated chair leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the chair leg assembly structure provided by the utility model.

[0020] Figure 2 A cross-sectional view of the chair leg assembly structure provided by the utility model Figure 1 .

[0021] Figure 3 The utility model is a schematic diagram of the chair leg explosion structure.

[0022] Figure 4 A schematic diagram of chair leg transportation and stacking of the chair leg assembly structure provided by the utility model.

[0023] Figure 5 The circumferential positioning structure provided by the utility model is schematically shown Figure 1 .

[0024] Figure 6 The circumferential positioning structure provided by the utility model is schematically shown Figure 2 .

[0025] Figure 7A cross-sectional view of the chair leg assembly structure provided by the utility model Figure 2 .

[0026] In the figure, 10, mounting base; 11, threaded matching structure; 12, limiting step; 13, limiting sleeve; 14, positioning groove; 20, chair leg; 21, sleeve portion; 22, supporting foot; 23, positioning notch; 24, positioning convex portion; 25, overlapping surface; 26, positioning convex strip; 30, bolt; 40, universal wheel; 50, supporting gas rod. DETAILED DESCRIPTION

[0027] Embodiment 1

[0028] See also Figure 1 to Figure 2 , which is a schematic diagram of a chair leg assembly structure provided by the utility model. The chair leg assembly structure includes: a mounting base 10; at least two groups of chair legs 20 sleeved on the bottom of the mounting base 10, a circumferential positioning structure arranged between the chair legs 20, a circumferential positioning structure arranged between the mounting base 10 and the chair legs 20, and a universal wheel 40 arranged at the end of the chair legs 20. It can be imagined that the chair leg assembly structure also includes other functional components and specific structures, such as cylinders, mounting structures, etc., which are all well-known technologies to those skilled in the art, so they will not be described in detail one by one here.

[0029] The mounting base 10 has a columnar structure on the outside, and a cylinder is provided inside the mounting base 10, which is controlled by an external button. A support gas rod 50 is provided at the upper end of the mounting base 10, and one end of the support gas rod 50 is connected to the cylinder, which is used to control the length of the support gas rod 50 extending out of the mounting base 10 and to provide a resisting force for the support gas rod 50. The end of the support gas rod 50 away from the mounting base 10 is connected to the seat structure, usually by plugging. The cylinder structure is a prior art in the art and will not be described in detail here.

[0030] In this embodiment, there are two groups of chair legs 20, each of which has an independent structure and is fixedly connected to the bottom of the mounting base 10. Each chair leg 20 is provided with a fixed fulcrum by the mounting base 10. The two groups of chair legs 20 are arranged so that the chair legs 20 can form a stable horizontal plane support at least three points between the swivel chair and the ground.

[0031] Specifically, the chair leg 20 includes a sleeve portion 21 sleeved on the outer wall of the bottom of the mounting base 10. The inner wall of the sleeve portion 21 is tightly connected to the outer wall of the bottom of the mounting base 10, which is conducive to the tightness of the connection between the chair leg 20 and the mounting base 10. Adjacent sleeve portions 21 are axially connected end to end. This structure is conducive to setting the flat state of the chair leg 20. At least two radially protruding support feet 22 are provided on the outer wall of each sleeve portion 21. The support feet 22 are used to expand the support surface of the bottom of the seat, lower the structural center of gravity of the seat, and make the support of the chair leg 20 more stable and reliable. The support feet 22 are circumferentially distributed along the central axis of the sleeve portion 21, so that the force on each chair leg 20 is balanced and the pressure bearing performance is improved.

[0032] And the end of each support foot 22 away from the sleeve part 21 is located at the same height level. In this embodiment, the support foot 22 is arranged obliquely downward along the outer wall of the sleeve part 21. The end of each support foot 22 away from the sleeve part 21 is the lowest end of the support foot 22. With the universal wheel 40 connected to the end of each support foot 22 away from the sleeve part 21, the entire chair leg 20 structure can be supported or slid on the ground smoothly and stably. The lowest end height of the universal wheel 40 is lower than the bottom end height of the mounting base 10, ensuring that the universal wheel 40 first contacts the ground to support the chair leg 20, avoiding the bottom of the mounting base 10 interfering with the support or sliding of the universal wheel 40. It should be noted that, since the sleeve part 21 of each support foot 22 is sleeved on the mounting base 10 at different heights, the corresponding inclination angle and length of the support foot 22 are different, so as to achieve the purpose that the end of each support foot 22 away from the sleeve part 21 is located at the same height level. The uppermost chair leg 20 is prevented from detaching upward from the mounting base 10 through the threaded matching structure 11 of the sleeve portion 21 and the bottom outer wall of the mounting base 10, and cooperates with the reverse pressure of the chair leg 20 against the ground to achieve axial limitation of the sleeve portion 21 on the mounting base 10, or is fastened by bolts 30 to ensure that each chair leg 20 is reliably and stably connected to the mounting base 10, thereby improving the supporting performance of the disassembly and assembly of the chair leg 20.

[0033] The chair leg assembly structure adopts a method of assembling and disassembling multiple chair legs 20, which reduces the size of the chair leg 20 structure while reducing the assembly of small parts, reducing consumables and facilitating packaging and transportation. In addition, the sleeve portion 21 is axially connected, and the vertical force at the assembly position of the chair leg 20 ensures the supporting strength of the main body of the supporting leg 22, and reduces the pressure-bearing pressure of the assembled chair leg 20, so as to achieve the same pressure-bearing performance as the integrated chair leg 20.

[0034] A circumferential positioning structure is provided between adjacent sleeve portions 21. In this embodiment, the circumferential positioning structure includes at least one positioning notch 23 provided at the end of the sleeve portion 21, and a positioning convex portion 24 provided at the end of the adjacent sleeve portion 21. During the axial connection of adjacent sleeve portions 21, the positioning convex portions 24 of adjacent sleeve portions 21 are correspondingly embedded in the positioning notch 23, that is, circumferential synchronization is formed between each chair leg 20, the connection structure of each sleeve is more compact, and the stability of the circumferential distribution of the supporting foot 22 of each chair leg 20 is ensured.

[0035] Optimally, see Figure 3 , the adjacent sleeve parts 21 have radially fitting overlap surfaces 25 at the axially connected positions, for example, an annular groove and an annular convex portion are provided at the ends of the adjacent sleeve parts, and the annular convex portion is embedded in the annular groove. This structure further improves the axial connection of the adjacent sleeve parts 21 and improves the accuracy of the force in the vertical direction on the sleeve parts 21. In this embodiment, the positioning notch 23 and the positioning convex portion 24 are respectively provided on the overlap surfaces 25 on the adjacent sleeve parts 21, and the structures of the positioning notch 23 and the positioning convex portion 24 are hidden inside the sleeve part 21, and the circumferential fixation of the two chair legs 20 is formed.

[0036] It is conceivable that, see Figure 4 Each supporting foot 22 is arranged radially outward and inclined downward along the sleeve portion 21. When adjacent sleeve portions 21 are axially connected and the supporting feet 22 are located on both sides, the supporting feet 22 form a circumferential distribution. When adjacent sleeve portions 21 are axially connected and the supporting feet 22 are located on the same side, the supporting foot 22 at the upper end is overlapped on the supporting foot 22 at the lower end. During transportation, the two sets of chair legs 20 can be placed on the same side and bundled for transportation, thereby reducing the packaging size, increasing the structural strength of the components, and avoiding damage to the components during transportation.

[0037] In other embodiments, a circumferential positioning structure may also be provided between the sleeve portion 21 and the outer wall of the mounting base 10, see Figures 5 and 6 The circumferential positioning structure includes a mounting base 10 whose cross section is any one of a triangle, a rectangle, a polygon, etc. The sleeve portion 21 under the structure can be directly sleeved on the mounting base 10, so that each chair leg 20 is circumferentially distributed on the mounting base 10. It is conceivable that a positioning plug-in structure with a vertical guide can be arranged on the inner wall of the sleeve portion 21 and the mounting base 10, such as a positioning groove 14, and a positioning convex strip 26, so that each chair leg 20 can be circumferentially distributed on the mounting base 10.

[0038] As mentioned above, the sleeve portion 21 can be connected to the mounting base 10 by bolt fastening. Specifically, the sleeve portion 21 is provided with a radially penetrated bolt 30, and the bolt 30 can pass through the sleeve portion 21 and be threadedly connected with the screw hole on the mounting base 10, or the bolt 30 can be screwed into the threaded sleeve portion 21 to abut against the outer wall of the mounting base 10, both of which can achieve relative fixation of the sleeve portion 21 and the mounting base 10.

[0039] In other embodiments, the sleeve portion 21 may also be connected to the mounting base 10 by a pin-type fixing method.

[0040] In other embodiments, see Figure 7 A limiting step 12 is provided in the middle of the mounting base 10 for the uppermost sleeve portion 21 to connect with, and the limiting step 12 provides an initial abutment reference for the uppermost sleeve portion 21, and a limiting sleeve 13 is detachably provided at the bottom of the mounting base 10 to abut against the bottom of the sleeve portion 21 at the lower end. In this embodiment, one end of the limiting sleeve 13 can be screwed into the bottom of the mounting base 10 to adjust the height of the limiting sleeve 13 until the upper end of the limiting sleeve 13 abuts against the sleeve portion 21 at the lower end, thereby realizing the double-end axial limitation of the sleeve portion 21 on the mounting base 10, so as to achieve a better assembly method and supporting performance.

[0041] Embodiment 2

[0042] The utility model also provides a chair, which has the chair leg assembly structure as described above, and except for the chair leg assembly structure, other components are existing technologies or commercially available parts.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A chair leg assembly structure, characterized in that: include: Install the base; The chair legs have at least two groups and are fixedly connected to the bottom of the mounting base. The chair legs include sleeve portions that are sleeved on the outer wall of the bottom of the mounting base and are axially connected end to end. The outer wall of each sleeve portion is provided with at least two radially protruding supporting feet. The supporting feet are circumferentially distributed along the central axis of the mounting base and the end of each supporting foot away from the sleeve portion is located at the same height level.

2. The chair leg assembly structure according to claim 1, characterized in that: A circumferential positioning structure is provided between adjacent sleeve portions, and the circumferential positioning structure includes at least one positioning notch provided at the end of the sleeve portion, and a positioning protrusion provided at the end of the adjacent sleeve portion and capable of correspondingly embedding into the positioning notch.

3. The chair leg assembly structure according to claim 2, characterized in that: The support legs are arranged radially outward and obliquely downward along the sleeve portion. When adjacent sleeve portions are axially connected and the support legs are located on the same side, the support legs at the upper end overlap the support legs at the lower end.

4. The chair leg assembly structure according to claim 2, characterized in that: A circumferential positioning structure is provided between the sleeve portion and the outer wall of the mounting base, and the inner wall structure of the sleeve portion cooperates with the circumferential positioning structure and is sleeved on the outer wall of the mounting base.

5. The chair leg assembly structure according to claim 3 or 4, characterized in that: The sleeve portion is provided with radially penetrating bolts, which pass through the sleeve portion and are connected to the mounting base.

6. The chair leg assembly structure according to claim 3, characterized in that: Adjacent sleeve parts are located at axially connected positions and have radially fitted overlapping surfaces, and the positioning notches and positioning convex portions are respectively arranged on the overlapping surfaces of the adjacent sleeve parts.

7. The chair leg assembly structure according to claim 3 or 4, characterized in that: A limiting step for the uppermost sleeve portion to contact is provided in the middle of the mounting base, and a limiting sleeve abutting against the bottom of the lowermost sleeve portion is detachably provided at the bottom of the mounting base.

8. The chair leg assembly structure according to claim 1, characterized in that: One end of the support foot away from the sleeve portion is connected with a universal wheel.

9. The chair leg assembly structure according to claim 8, characterized in that: The lowest end height of the universal wheel is lower than the bottom end surface height of the mounting base.

10. A seat, characterized in that: A chair leg assembly structure having the structure described in any one of claims 1 to 9.

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