Chair leg structure with plastic bottom cover

Abstract

The chair leg structure with the plastic bottom covers comprises a chair leg body and the bottom covers, the chair leg body comprises an integrally-formed mounting seat and a plurality of supporting legs with the same structure, the supporting legs are connected to the outer side of the mounting seat and evenly distributed around the mounting seat at intervals, the number of the bottom covers is multiple, each supporting leg corresponds to one bottom cover, and the bottom covers are arranged on the mounting seat. The plastic bottom covers are arranged at the bottoms of the supporting legs to cover the edges of the supporting legs, so that burrs and the edges on the chair leg body can be prevented from being exposed, the chair leg body does not need to be ground and polished during production, the grinding and polishing step of the chair leg body is omitted, the labor cost is saved, and the production efficiency is improved; in addition, the hand feeling of the chair leg body can be improved by arranging the plastic bottom cover, the situation that hands are placed on the chair leg body in the assembling or moving process is avoided, and the plastic bottom cover can be designed into different colors, lines or patterns to improve the attractiveness of the chair leg.

Description

Technical Field

[0001] The utility model relates to the technical field of chair feet, and particularly relates to a chair foot structure with a plastic bottom cover. Background Art

[0002] A chair foot is the supporting part that contacts the ground at the bottom of a chair, and its design, shape, and stability have an important impact on the use effect and aesthetic degree of the chair. The applicant has previously applied for and publicly disclosed a utility model patent for an integrally formed chair foot, with the patent application number CN202222771172.1, which includes a chair foot body. The chair foot body includes a fixing seat and multiple supporting feet integrally stamped and bent from the same first metal plate. The multiple supporting feet are distributed on the outer periphery of the fixing seat, and the end of each supporting foot away from the fixing seat is bent downward with an arc-shaped closing part. By integrally stamping and bending the fixing seat and multiple supporting feet from the same first metal plate, the fixing seat and the multiple supporting feet are integrally formed, avoiding the drawbacks of welding the supporting feet, and effectively improving the production efficiency and quality of the chair feet, as well as reducing the production cost.

[0003] During the production process of the above chair feet, the chair foot body can be formed by stamping or casting. However, regardless of which forming method is used, burrs and edges will be generated on the edge of the formed chair foot body. Therefore, the chair foot body needs to be polished. Otherwise, the burrs and edges may scratch the hand. Moreover, in order to improve the hand feeling, in the polishing process, not only rough machining but also fine machining are required to round each edge. However, these processing steps usually need to be completed manually, which will greatly increase the processing cost, waste a lot of labor and materials, and have low production efficiency. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a chair foot structure with a plastic bottom cover.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A chair foot structure with a plastic bottom cover includes a chair foot body and a bottom cover. The chair foot body includes an integrally formed mounting seat and multiple support feet with the same structure. The multiple support feet are connected to the outside of the mounting seat and are evenly spaced around the mounting seat. The bottom cover has multiple pieces, and each support foot corresponds to one bottom cover. The bottom cover is fixed to the bottom of the support foot to cover the edge at the bottom of the support foot. A first connecting column is provided on the inner side of the support foot, and a second connecting column is provided on the inner side of the bottom cover. The first connecting column and the second connecting column are arranged opposite to each other.

[0007] In the present utility model, the mounting base is of a sleeve-like structure. One end of the supporting leg is connected to a position near the top of the mounting base, and the other end extends obliquely downward toward the outside of the mounting base. The angle between the supporting leg and the horizontal plane is 15° - 20°, and the ground clearance of the mounting base is controlled to be 20 - 25 cm.

[0008] Furthermore, an arc surface for transition is provided between the top surface of the supporting leg and the mounting base.

[0009] In the present utility model, a U-shaped groove with an opening facing downward and extending along the length direction of the supporting leg is provided at the bottom of the supporting leg, and a connecting seat for installing a chair wheel is provided at the extending end of the U-shaped groove.

[0010] Furthermore, at least two groups of the first connecting columns are provided and arranged in the U-shaped groove. A plurality of groups of reinforcing ribs are also provided in the U-shaped groove. The plurality of groups of reinforcing ribs are arranged around the first connecting columns to form a support, and are connected between the groove wall and the groove bottom of the U-shaped groove to form a support.

[0011] Furthermore, after the bottom cover is installed, it covers the U-shaped groove. A limiting head protruding upward is provided at the top of the first connecting column, and a limiting groove is provided at the top of the second connecting column. When the first connecting column and the second connecting column face each other, the limiting head extends into the limiting groove to form a limit.

[0012] In the present utility model, the bottom cover is of a shell-like structure. The edge contour of the bottom cover corresponds to the edge contour of the supporting leg. One end of the bottom cover abuts against the side surface of the mounting base, and the other end abuts against the side surface of the connecting seat.

[0013] The present utility model has the following advantages and beneficial effects:

[0014] By providing a plastic bottom cover at the bottom of the supporting leg to cover the edges of the supporting leg, burrs and edges on the chair leg body can be avoided from being exposed. During production, it is no longer necessary to polish the chair leg body, saving the polishing step of the chair leg body, saving labor costs and improving production efficiency. In addition, by providing a plastic bottom cover, the feel of the chair leg body can be improved, and there will be no situation of getting stuck during assembly or handling. Moreover, the plastic bottom cover can be designed with different colors, patterns or textures to improve the aesthetics of the chair legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the chair leg in this embodiment;

[0017] Figure 2 It is an installation schematic diagram of the bottom cover in this embodiment;

[0018] Figure 3 This is a sectional view of the support feet in this embodiment. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The present utility model is not limited to the following embodiments.

[0020] As Figures 1 to 3 shown, this embodiment discloses a chair leg structure with a plastic bottom cover 2, which includes a chair leg body 1 and a bottom cover 2. The chair leg body 1 includes an integrally formed mounting seat 10 and a plurality of support feet 11 with the same structure. The plurality of support feet 11 are connected to the outside of the mounting seat 10 and are evenly spaced around the mounting seat 10. The bottom cover 2 has a plurality of pieces, and each support foot 11 corresponds to one bottom cover 2. The bottom cover 2 is made of plastic material and is fixed to the bottom of the support foot 11 by bolts to cover the edges at the bottom of the support foot 11. Specifically, a first connecting column 110 is provided on the inner side of the support foot 11, and a second connecting column 200 is provided on the inner side of the bottom cover 2. The first connecting column 110 and the second connecting column 200 are arranged opposite to each other. Preferably, the bolt passes through the first connecting column 110 and the second connecting column 200 to fix the bottom cover 2 inside the support foot 11, which is convenient for installation. By providing a plastic bottom cover 2 at the bottom of the support foot 11 to cover the edges of the support foot 11, burrs and edges on the chair leg body 1 can be prevented from being exposed. During production, it is no longer necessary to polish the chair leg body 1, saving the polishing step of the chair leg body 1 and reducing labor costs and improving production efficiency. In addition, by providing the plastic bottom cover 2, the feel of the chair leg body 1 can be improved, and there will be no situation of getting stuck during assembly or handling. Moreover, the plastic bottom cover 2 can be designed with different colors, patterns or textures to improve the aesthetics of the chair legs.

[0021] In the present utility model, the mounting base 10 is of a sleeve-like structure, the pneumatic rod is inserted into the mounting base 10, one end of the support leg 11 is connected to a position near the top of the mounting base 10, and the other end extends obliquely downward toward the outside of the mounting base 10. The included angle between the support leg 11 and the horizontal plane is 15° - 20°, preferably 17°. It should be noted that the included angle between the support leg 11 and the horizontal plane needs to be determined according to the length of the support leg 11. By setting the included angle, the ground clearance of the mounting base 10 is controlled between 20 - 25 cm, preferably 20 cm. The ground clearance of the mounting base 10 determines the lowest height of the seat when the pneumatic rod is in the retracted state. The seat has different comfort levels at different heights. Through multiple comparative tests, the optimal seat height with the best comfort can be obtained, and thus the optimal ground clearance of the mounting base 10 can be deduced inversely under the condition of determining the length of the support leg 11. Specifically, an arc surface 100 for transition is provided between the top surface of the support leg 11 and the mounting base 10. By providing the arc surface 100, the outer surface of the chair leg body 1 is smooth without sharp edges, and the aesthetics can also be improved.

[0022] In this embodiment, a U-shaped groove 111 with an opening facing downward and extending along the length direction of the support leg 11 is provided at the bottom of the support leg 11. A connecting seat 112 for installing the chair wheel is provided at the extending end of the U-shaped groove 111. By providing the U-shaped groove 111, the material cost can be saved while ensuring the structural stability, and the weight of the support leg 11 can be reduced. Specifically, at least two groups of the first connecting columns 110 are provided and arranged in the U-shaped groove 111. In addition, in order to improve the structural stability of the support leg 11 and the first connecting columns 110, multiple groups of reinforcing ribs 113 are provided in the U-shaped groove 111. The multiple groups of reinforcing ribs 113 are arranged around the first connecting columns 110 to form a support, and are connected between the groove wall and the groove bottom of the U-shaped groove 111 to form a support.

[0023] Further, after the bottom cover 2 is installed, the U-shaped groove 111 is covered. During the production process, multiple bottom covers 2 need to be successively covered on the U-shaped groove 111, and then bolts are inserted and tightened. During this process, the bottom cover 2 has no limit and is prone to dislocation. Therefore, a limiting head 114 protruding upward is provided at the top of the first connecting column 110, and a limiting groove 201 is provided at the top of the second connecting column 200. When the first connecting column 110 and the second connecting column 200 are opposite to each other, the limiting head 114 extends into the limiting groove 201 to form a limit. After the limit, the bottom cover 2 can be prevented from moving randomly on the support leg 11, which provides convenience for installation.

[0024] In this embodiment, in order to save the production cost of the bottom cover 2, the bottom cover 2 is provided with a shell-like structure. The edge contour of the bottom cover 2 corresponds to the edge contour of the support leg 11. One end of the bottom cover 2 abuts against the side surface of the mounting seat 10, and the other end abuts against the side surface of the connecting seat 112. After the bottom cover 2 is installed, one end of the bottom cover 2 close to the mounting seat 10 is flush with the bottom plane of the mounting seat 10.

[0025] The above content described in this specification is only an example of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the content of this specification of the present utility model or exceed the scope defined by this claim book, they should all belong to the protection scope of the present utility model.

Claims

1. A chair leg structure with a plastic bottom cover, characterized in that: The invention comprises a chair foot body (1) and a bottom cover (2), wherein the chair foot body (1) comprises an integrally formed mounting seat (10) and a plurality of supporting feet (11) having the same structure, wherein the plurality of supporting feet (11) are connected to the outer side of the mounting seat (10) and are evenly spaced around the mounting seat (10), wherein the bottom cover (2) is provided with a plurality of pieces, each supporting foot (11) corresponding to a bottom cover (2), wherein the bottom cover (2) is fixed to the bottom of the supporting foot (11) to cover the edge of the bottom of the supporting foot (11), wherein a first connecting column (110) is provided on the inner side of the supporting foot (11), and wherein a second connecting column (200) is provided on the inner side of the bottom cover (2), wherein the first connecting column (110) and the second connecting column (200) are arranged opposite to each other.

2. A chair leg structure with a plastic bottom cover according to claim 1, characterized in that: The mounting seat (10) is a sleeve-shaped structure, one end of the support foot (11) is connected to a position on the mounting seat (10) close to the top, and the other end extends downwardly and obliquely toward the outside of the mounting seat (10), the angle between the support foot (11) and the horizontal plane is 15°-20°, and the ground clearance of the mounting seat (10) is controlled to be 20-25 cm.

3. The chair leg structure with a plastic bottom cover according to claim 1, characterized in that: A circular arc surface (100) for transition is provided between the top surface of the support foot (11) and the mounting seat (10).

4. The chair leg structure with a plastic bottom cover according to claim 1, characterized in that: The bottom of the support foot (11) is provided with a U-shaped groove (111) with an opening facing downwards and extending along the length direction of the support foot (11), and the extended end of the U-shaped groove (111) is provided with a connecting seat (112) for mounting a chair wheel.

5. A chair leg structure with a plastic bottom cover according to claim 4, characterized in that: The first connecting column (110) is provided with at least two groups and is arranged in the U-shaped groove (111). The U-shaped groove (111) is also provided with a plurality of groups of reinforcing ribs (113). The plurality of groups of reinforcing ribs (113) are arranged around the first connecting column (110) to form support, and are connected between the groove wall and the groove bottom of the U-shaped groove (111) to form support.

6. The chair leg structure with a plastic bottom cover according to claim 4, characterized in that: After the bottom cover (2) is installed, the U-shaped groove (111) is covered; the top of the first connecting column (110) is provided with a limit head (114) protruding upward; the top of the second connecting column (200) is provided with a limit groove (201); when the first connecting column (110) and the second connecting column (200) are opposite to each other, the limit head (114) extends into the limit groove (201) to form a limit.

7. The chair leg structure with a plastic bottom cover according to claim 1, characterized in that: The bottom cover (2) is configured as a shell-like structure, the edge contour of the bottom cover (2) corresponds to the edge contour of the support foot (11), one end of the bottom cover (2) abuts against a side surface of the mounting seat (10), and the other end abuts against a side surface of the connecting seat (112).

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