Star-shaped aluminum alloy chair leg for office chair

Abstract

The utility model discloses an office chair star -shaped aluminum alloy chair foot belongs to office chair technical field, including center seat, the upper end of center seat is provided with support axle main part, and support axle main part and center seat are fixedly connected through support axle fixing mechanism, and the lower extreme of center seat is provided with chair foot fixing mechanism, the chair foot fixing mechanism includes support subassembly, and the lower extreme of center seat's side is provided with support subassembly, and the upper extreme of center seat's side is provided with five chair foot main parts, and one end of chair foot main part is provided with the clamping seat, the utility model discloses a chair foot fixing mechanism is set up, realized the quick installation and stable fixation between chair foot main part and center seat, and the traditional chair foot and center seat adopt integrated design, and once damage can only integral replacement, and the cost is higher, and the utility model discloses the cooperation of clamping seat and clamping groove and the fixing of bolt no.

Description

Technical Field

[0001] This utility model belongs to the field of office chair technology, specifically relating to a star-shaped aluminum alloy chair leg for office chairs. Background Technology

[0002] Star-shaped aluminum alloy chair legs are a common support structure for office chairs, typically consisting of a central seat and multiple outward-extending aluminum alloy brackets. This design not only offers excellent load-bearing capacity but also provides stable support, making it widely used in various types of office chairs. Aluminum alloy, due to its lightweight, high strength, and good corrosion resistance, is an ideal material for manufacturing office chair legs.

[0003] Although star-shaped aluminum alloy chair legs are widely used in office chairs, they still have some shortcomings. First, the existing aluminum alloy chair legs and center seat are mostly integrated, so when the aluminum alloy support is damaged, it cannot be replaced individually and must be replaced as a whole. This not only increases maintenance costs but also causes unnecessary waste of resources. Second, the existing connection and fixing structure between the support shaft and the center seat is relatively complex, and the installation and disassembly process is cumbersome, which is not convenient for daily maintenance and use, affecting the overall service life of the office chair and the user experience. Utility Model Content

[0004] To address the problems mentioned in the background section, this utility model provides a star-shaped aluminum alloy chair leg for office chairs, which facilitates the installation and fixing of both the aluminum alloy chair leg and the support shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a star-shaped aluminum alloy chair leg for an office chair, including a central seat, a support shaft body is provided at the upper end of the central seat, the support shaft body and the central seat are fixedly connected by a support shaft fixing mechanism, and a chair leg fixing mechanism is provided at the lower end of the central seat.

[0006] The chair leg fixing mechanism includes a support component. The support component is provided at the lower side of the center seat, and five chair leg bodies are provided at the upper side of the center seat. One end of the chair leg body is provided with a card seat, and the side of the center seat has a corresponding card slot. The card seat and the center seat are fixedly connected by bolts. The other end of the chair leg body is provided with a universal wheel fixing structure.

[0007] Preferably, the support assembly includes a connecting frame, with the connecting frame located at the lower side of the center seat and a support ring located at the other end of the connecting frame.

[0008] Preferably, the upper end of the support ring is provided with a positioning groove corresponding to the main body of the chair leg.

[0009] Preferably, the chair leg fixing mechanism further includes a positioning rod, with a positioning rod provided on the side of the card seat and a positioning hole corresponding to the positioning rod provided on the side of the center seat.

[0010] Preferably, the universal wheel fixing structure includes a connecting seat, a connecting seat is provided at the other end of the chair leg body, a connecting column is provided inside the connecting seat, a connecting groove corresponding to the connecting column is opened inside the connecting seat, a connecting rod is provided at the lower end of the connecting column, a limit block is provided on the inner wall of the connecting groove, a limit groove corresponding to the limit block is opened on the side of the connecting column, and the connecting seat and the connecting column are fixedly connected by bolts.

[0011] Preferably, the support shaft fixing mechanism includes a flange one, a flange one is provided at the upper end of the center seat, a flange two is provided at the lower end of the support shaft body, a fixing column is provided at the lower end of the flange two, the flange one and the flange two are fixedly connected by bolt four, and a fixing groove corresponding to the fixing column is opened inside the center seat.

[0012] Preferably, the support shaft fixing mechanism further includes a hexagonal column, the fixing groove is provided with a hexagonal column, and the fixing column is provided with a hexagonal groove corresponding to the hexagonal column.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves rapid installation and stable fixation between the chair leg body and the center seat by setting up a chair leg fixing mechanism. Traditional chair legs and center seats are mostly designed as an integrated unit, which can only be replaced as a whole if damaged, resulting in high costs. However, this utility model, through the cooperation of the card seat and the card slot, as well as the fixing of the bolt, allows the chair leg body to be installed onto the center seat quickly and accurately. The cooperation of the positioning rod and the positioning hole further enhances the stability of the connection and prevents the chair leg body from loosening or shifting during use. In addition, the design of the universal wheel fixing structure ensures the secure installation and flexible rotation of the universal wheels, improving the user experience of the office chair.

[0015] 2. This utility model achieves a firm connection and convenient installation between the support shaft body and the center seat by setting up a support shaft fixing mechanism. The traditional connection structure between the support shaft and the center seat is complicated and inconvenient to install and disassemble. This utility model adopts the design of flange one and flange two, and fixes the two together with bolt four. The connection is not only firm, but also easy to install and disassemble, improving the convenience of maintenance and replacement. The cooperation between the hexagonal column and the hexagonal groove further enhances the connection stability between the support shaft body and the center seat, prevents the fixed column from rotating during use, ensures the stability of the entire support shaft, and thus extends the service life of the office chair. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a perspective view of the chair leg fixing mechanism of this utility model;

[0018] Figure 3 This is a perspective view of the universal wheel fixing structure of this utility model;

[0019] Figure 4 This is a perspective view of the support shaft fixing mechanism of this utility model;

[0020] In the diagram: 1. Center seat; 2. Chair leg fixing mechanism; 21. Positioning hole; 22. Slot; 23. Bolt 1; 24. Bolt 2; 25. Positioning groove; 26. Chair leg body; 27. Caster wheel fixing structure; 271. Bolt 3; 272. Connecting seat; 273. Connecting column; 274. Connecting rod; 275. Limiting groove; 276. Limiting block; 277. Connecting groove; 28. Positioning rod; 29. ​​Support assembly; 291. Support ring; 292. Connecting frame; 210. Slot; 3. Support shaft fixing mechanism; 31. Hexagonal column; 32. Flange 1; 33. Fixing groove; 34. Hexagonal groove; 35. Bolt 4; 36. Flange 2; 37. Fixing column; 4. Support shaft body. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a star-shaped aluminum alloy chair leg for an office chair, including a center seat 1, a support shaft body 4 is provided at the upper end of the center seat 1, the support shaft body 4 and the center seat 1 are fixedly connected by a support shaft fixing mechanism 3, and a chair leg fixing mechanism 2 is provided at the lower end of the center seat 1.

[0024] The chair leg fixing mechanism 2 includes a support component 29. The support component 29 is provided at the lower side of the center seat 1. Five chair leg bodies 26 are provided at the upper side of the center seat 1. One end of the chair leg body 26 is provided with a card seat 210. The side of the center seat 1 is provided with a corresponding card slot 22 for the card seat 210. The card seat 210 is fixedly connected to the center seat 1 by bolts 23. The other end of the chair leg body 26 is provided with a universal wheel fixing structure 27.

[0025] Specifically, the support component 29 includes a connecting frame 292. The connecting frame 292 is provided at the lower side of the center seat 1, and a support ring 291 is provided at the other end of the connecting frame 292. By adopting the above technical solution, the connecting frame 292 and the support ring 291 provide stable support for the chair leg body 26, enhance the structural strength of the entire chair leg, and ensure the stability of the office chair during use.

[0026] Specifically, the upper end of the support ring 291 is provided with a positioning groove 25 corresponding to the chair leg body 26. By adopting the above technical solution, the positioning groove 25 can accurately position the chair leg body 26, so that it can be quickly and accurately aligned with the center seat 1 during the installation process, thereby improving the installation efficiency.

[0027] Specifically, the chair leg fixing mechanism 2 also includes a positioning rod 28. The positioning rod 28 is provided on the side of the card seat 210, and the positioning hole 21 corresponding to the positioning rod 28 is opened on the side of the center seat 1. By adopting the above technical solution, the cooperation between the positioning rod 28 and the positioning hole 21 further enhances the connection stability between the chair leg body 26 and the center seat 1, and prevents the chair leg body 26 from loosening or shifting during use.

[0028] Specifically, the universal wheel fixing structure 27 includes a connecting seat 272. The connecting seat 272 is provided at the other end of the chair leg body 26. A connecting column 273 is provided inside the connecting seat 272. A connecting groove 277 corresponding to the connecting column 273 is opened inside the connecting seat 272. A connecting rod 274 is provided at the lower end of the connecting column 273. A limit block 276 is provided on the inner wall of the connecting groove 277. A limit groove 275 corresponding to the limit block 276 is opened on the side of the connecting column 273. The connecting seat 272 and the connecting column 273 are fixedly connected by bolts 271. By adopting the above technical solution, the universal wheel fixing structure 27 can firmly fix the universal wheel. At the same time, the design of the limit block 276 and the limit groove 275 prevents the connecting column 273 from rotating during use, ensuring the stability and flexibility of the universal wheel.

[0029] In this embodiment, the chair leg body 26 is first aligned with the slot 22 on the center seat 1 via the card holder 210 and inserted. Then, the card holder 210 is fixed to the center seat 1 via bolt 23. The positioning rod 28 is inserted into the positioning hole 21 to further enhance stability. The universal wheel is fixed to the other end of the chair leg body 26 via the connecting seat 272 and the connecting column 273. The connecting seat 272 and the connecting column 273 are fixedly connected via bolt 271. The limiting block 276 is embedded in the limiting groove 275 to prevent rotation, thus completing the assembly of the entire chair leg.

[0030] Example 2

[0031] The difference between this embodiment and embodiment 1 is that the support shaft fixing mechanism 3 includes a flange 32, a flange 32 is provided at the upper end of the center seat 1, a flange 36 is provided at the lower end of the support shaft body 4, and a fixing post 37 is provided at the lower end of the flange 36. The flange 32 and the flange 36 are fixedly connected by bolts 35. The center seat 1 has a fixing groove 33 corresponding to the fixing post 37. By adopting the above technical solution, the design of the flange 32 and the flange 36 makes the connection between the support shaft body 4 and the center seat 1 more secure. The fixing method of bolts 35 facilitates installation and disassembly, and improves the convenience of maintenance and replacement.

[0032] Specifically, the support shaft fixing mechanism 3 also includes a hexagonal column 31. The fixing groove 33 is provided with a hexagonal column 31 inside, and the fixing column 37 is provided with a hexagonal groove 34 corresponding to the hexagonal column 31 inside. By adopting the above technical solution, the cooperation between the hexagonal column 31 and the hexagonal groove 34 further enhances the connection stability between the support shaft body 4 and the center seat 1, prevents the fixing column 37 from rotating during use, and ensures the stability of the entire support shaft.

[0033] In this embodiment, the fixing post 37 is inserted into the fixing groove 33 of the center seat 1, the hexagonal post 31 is embedded in the hexagonal groove 34 of the fixing post 37, and the flange 1 32 and flange 2 36 are fixedly connected by bolt 4 35 to complete the assembly of the support shaft body 4 and the center seat 1.

[0034] The working principle and usage process of this utility model are as follows: When using this utility model, firstly, align the main body 26 of the chair leg with the slot 22 on the center seat 1 through the card seat 210 and insert it. Then, fix the card seat 210 on the center seat 1 with bolt 23. Insert the positioning rod 28 into the positioning hole 21 to further enhance stability. The universal wheel is fixed to the other end of the main body 26 of the chair leg through the connecting seat 272 and the connecting column 273. Fix the connecting seat 272 and the connecting column 273 with bolt 271. The limiting block 276 is embedded in the limiting groove 275 to prevent rotation, thus completing the assembly of the entire chair leg.

[0035] Then, the fixing post 37 is inserted into the fixing groove 33 of the center seat 1, and the hexagonal post 31 is embedded in the hexagonal groove 34 of the fixing post 37. The flange 1 32 and flange 2 36 are fixedly connected by bolt 4 35, thus completing the assembly of the support shaft body 4 and the center seat 1.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A star-shaped aluminum alloy chair leg for an office chair, comprising a central seat (1), wherein a support shaft body (4) is provided at the upper end of the central seat (1), characterized in that: The main body of the support shaft (4) and the center seat (1) are fixedly connected by the support shaft fixing mechanism (3), and the lower end of the center seat (1) is provided with a chair leg fixing mechanism (2). The chair leg fixing mechanism (2) includes a support component (29). The support component (29) is provided at the lower side of the center seat (1). Five sets of chair leg bodies (26) are provided at the upper side of the center seat (1). A card seat (210) is provided at one end of the chair leg body (26). A corresponding card slot (22) is opened on the side of the center seat (1). The card seat (210) and the center seat (1) are fixedly connected by a bolt (23). A universal wheel fixing structure (27) is provided at the other end of the chair leg body (26). The support assembly (29) includes a connecting frame (292), the lower side of the center seat (1) is provided with the connecting frame (292), and the other end of the connecting frame (292) is provided with a support ring (291). The universal wheel fixing structure (27) includes a connecting seat (272). The other end of the chair leg body (26) is provided with a connecting seat (272). A connecting column (273) is provided inside the connecting seat (272). A connecting groove (277) corresponding to the connecting column (273) is opened inside the connecting seat (272). A connecting rod (274) is provided at the lower end of the connecting column (273). A limit block (276) is provided on the inner wall of the connecting groove (277). A limit groove (275) corresponding to the limit block (276) is opened on the side of the connecting column (273). The connecting seat (272) and the connecting column (273) are fixedly connected by bolts (271). The support shaft fixing mechanism (3) includes a flange one (32), a flange one (32) is provided at the upper end of the center seat (1), a flange two (36) is provided at the lower end of the support shaft body (4), a fixing column (37) is provided at the lower end of the flange two (36), and a flange one (32) and a flange two (36) are fixedly connected by bolt four (35). The center seat (1) has a fixing groove (33) corresponding to the fixing column (37) inside.

2. The star-shaped aluminum alloy chair leg for an office chair according to claim 1, characterized in that: The upper end of the support ring (291) is provided with a positioning groove (25) corresponding to the chair leg body (26).

3. The star-shaped aluminum alloy chair leg for an office chair according to claim 1, characterized in that: The chair leg fixing mechanism (2) also includes a positioning rod (28). The side of the card seat (210) is provided with a positioning rod (28), and the side of the center seat (1) is provided with a positioning hole (21) corresponding to the positioning rod (28).

4. The star-shaped aluminum alloy chair leg for an office chair according to claim 1, characterized in that: The support shaft fixing mechanism (3) also includes a hexagonal column (31), the fixing groove (33) is provided with a hexagonal column (31), and the fixing column (37) is provided with a hexagonal groove (34) corresponding to the hexagonal column (31).

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