Chair leg structure

Abstract

The chair leg structure provided by the utility model comprises a plurality of chair legs, the upper parts of the chair legs are transversely bent to form connecting parts, and the connecting parts are provided with lower end surfaces and side end surfaces; the first fixing piece comprises a plurality of first connecting arms corresponding to the connecting parts; the first fixing piece is fixed on the lower end surface, so that the plurality of chair legs are relatively fixed; the side face of the center shaft assembly is connected with the side end faces of the multiple connecting parts in an up-down limiting mode. Therefore, the chair legs can be stably fixed on the central shaft, the failure rate is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of chair technology, and in particular to a chair leg structure. Background Technology

[0002] One type of existing chair includes a seat cushion, chair legs, and a central shaft connecting the seat cushion. The chair legs are fixed to the central shaft to support the seat cushion. In this type of chair, when the chair legs are fixed to the central shaft, the force is concentrated at the connection point between the chair legs and the central shaft. This connection is prone to loosening and may even lead to breakage, resulting in a relatively high failure rate and a short service life for this type of chair.

[0003] Therefore, there are still problems in the existing technology that need to be solved. Utility Model Content

[0004] The main purpose of this invention is to propose a chair leg structure that allows the chair legs to be securely fixed to the central axis, thereby reducing the failure rate and extending the service life.

[0005] To achieve the above objectives, the chair leg structure proposed in this utility model includes: multiple chair legs, the upper part of which is laterally bent to form a connecting part, the connecting part having a lower end face and a side end face; a first fixing member, the first fixing member including multiple first connecting arms corresponding to the connecting part; the first fixing member is fixed to the lower end face to fix the multiple chair legs relatively; and a central shaft assembly, the side of the central shaft assembly being vertically and vertically connected to the side end faces of the multiple connecting parts.

[0006] Preferably, the lower end face is arranged horizontally with the first fixing member.

[0007] Preferably, the first connecting arm is provided with a first through hole and the lower end face is provided with a first screw hole; the first fixing member is fixed to the lower end face by passing a screw through the first through hole and screwing it into the first screw hole.

[0008] Preferably, the lower end face is formed with a first groove for the first connecting arm to be inserted, the first groove being adapted to the first connecting arm; the first screw hole is located at the bottom of the first groove.

[0009] Preferably, a second fixing member is provided on the side end face; the central shaft assembly includes a bushing, the bushing is provided with a blind hole or a second through hole, the second fixing member is embedded in the blind hole or the second through hole, and the upper and lower limit connection parts are connected.

[0010] Preferably, a mounting hole is provided on the side end face, and the second fixing member is a pin, which is installed in the mounting hole.

[0011] Preferably, the chair leg structure further includes a third fixing member, which includes a plurality of second connecting arms corresponding to the connecting part; the third fixing member is fixed to the upper end face of the connecting part.

[0012] Preferably, the third fixing member and the upper end face are arranged in a horizontal direction.

[0013] Preferably, the central shaft assembly further includes an inner shaft, the upper end of which is formed with a connecting post, and the third fixing member is formed with a third through hole through which the connecting post passes.

[0014] Preferably, the second connecting arm is provided with a fourth through hole and a second screw hole on its upper end face; the third fixing member is fixed to the upper end face by passing a screw through the fourth through hole and screwing it into the second screw hole.

[0015] The chair leg structure provided in this application includes: multiple chair legs, the upper part of which is laterally bent to form a connecting portion, the connecting portion having a lower end face and a side end face; a first fixing member, the first fixing member including multiple first connecting arms corresponding to the connecting portion; the first fixing member is fixed to the lower end face to fix the multiple chair legs relatively; a central shaft assembly, the side of the central shaft assembly being vertically and vertically connected to the side end faces of the multiple connecting portions. This allows the chair legs to be securely fixed to the central shaft, reducing the failure rate and extending the service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an embodiment of the chair leg structure of this utility model;

[0018] Figure 2 This is another schematic diagram of an embodiment of the chair leg structure of this utility model;

[0019] Figure 3 This is an exploded view of one embodiment of the chair leg structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the first fixing member of an embodiment of the chair leg structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the third fixing member of an embodiment of the chair leg structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the central shaft assembly of an embodiment of the chair leg structure of this utility model;

[0023] Figure 7 This is a schematic diagram of a chair leg according to an embodiment of the chair leg structure of this utility model;

[0024] Figure 8 This is another schematic diagram of a chair leg according to an embodiment of the chair leg structure of this utility model.

[0025] Explanation of icon numbers:

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] label name label name 100 Chair legs 211 First through hole 110 Connection part 300 Central shaft assembly 111 lower end face 310 bushing 111a First screw hole 311 Second through hole 111b First groove 320 inner shaft 112 Side end face 321 Connecting column 112a Mounting holes 400 Second fastener 113 Top surface 500 Third fastener 113a Second screw hole 510 Second connecting arm 200 First fastener 511 Fourth through hole 210 First connecting arm 520 Third through hole Detailed Implementation

[0028] 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.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] One type of existing chair includes a seat cushion, chair legs, and a central shaft connecting the seat cushion. The chair legs are fixed to the central shaft to support the seat cushion. In this type of chair, when the chair legs are fixed to the central shaft, the force is concentrated at the connection point between the chair legs and the central shaft. This connection is prone to loosening and may even lead to breakage, resulting in a relatively high failure rate and a short service life for this type of chair.

[0032] To address the aforementioned issues, this patent provides a chair leg structure designed to securely fix the chair legs to the central axis, thereby reducing the failure rate and extending the service life.

[0033] For ease of understanding, the specific implementation methods of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] Please see Figure 1-3 A chair leg structure includes multiple chair legs 100. The upper part of each chair leg 100 is laterally bent to form a connecting portion 110. The connecting portion 110 has a lower end face 111 and a side end face 112. The lateral bending is achieved such that the lower end face 111 is parallel to the ground. The lateral bending can be a bending of the lower surface of the upper part of the chair leg 100 or a bending of the entire upper part of the chair leg 100, as long as the lower surface of the upper part of the chair leg 100 can form the lower end face 111 for fixing the first fixing member 200. The chair leg structure includes a first fixing member 200, which includes multiple first connecting arms 210 corresponding to the connecting portion 110. The shape of the first connecting arms 210 can be sheet-like. It can also be tubular; the first fixing member 200 is fixed to the lower end face 111 of each connecting part 110 through the first connecting arm 210, thereby fixing the multiple chair legs 100 relatively; the chair leg structure includes a central shaft assembly 300, the side of the central shaft assembly 300 is vertically and vertically connected to the side end face 112 of the multiple connecting parts 110, so that each connecting part 110 is fixed relative to the central shaft in the vertical direction. At the same time, since the first fixing member 200 is fixed to the lower end face 111 of each connecting part 110, each connecting part 110 can also be fixed in the horizontal direction, so that the chair legs 100 can be stably fixed to the central shaft, reducing the failure rate and extending the service life.

[0035] Furthermore, both the lower end face 111 and the first fixing member 200 are arranged in a horizontal direction. At this time, the first fixing member 200 can provide a strong inward pulling and fixing effect to each chair leg 100, which can more effectively prevent the risk of the chair leg 100 tilting outward and detaching from the central axis due to the outward force when the chair is in use, and enhance the stability of the connection structure between the chair leg 100 and the central axis.

[0036] It should be noted that there are multiple ways to fix the first fastener 200 to the lower end face 111 of each connecting part 110 via the first connecting arm 210. This embodiment provides the following implementation method, please refer to [link / reference]. Figure 4 The first connecting arm 210 is provided with a first through hole 211, and the lower end face 111 is provided with a first screw hole 111a; the first fixing member 200 is fixed to the lower end face 111 by passing through the first through hole 211 and screwing into the first screw hole 111a through a screw.

[0037] Based on the above implementation, in order to prevent the first connecting arm 210 from shifting horizontally relative to the connecting portion 110, this embodiment provides the following implementation method, please refer to [link / reference]. Figure 4 and Figure 7 The lower end face 111 has a first groove 111b for the first connecting arm 210 to be inserted into, and the first groove 111b is adapted to the first connecting arm 210; the first screw hole 111a is located at the bottom of the first groove 111b. When the first connecting arm 210 is locked in the first groove 111b, the sidewall of the first groove 111b can prevent the first connecting arm 210 from shifting in the horizontal direction.

[0038] It should be noted that the side end faces 112 of the central shaft assembly 300, which are vertically and vertically connected to the multiple connecting parts 110, can be implemented in various ways. This embodiment provides the following implementation methods; please refer to [link / reference]. Figure 3 and Figure 6 A second fixing member 400 is provided on the side end face 112; the central shaft assembly 300 includes a bushing 310, the bushing 310 is provided with a blind hole or a second through hole 311, and the second fixing member 400 is embedded in the blind hole or the second through hole 311, so that the connecting part 110 is fixed relative to the bushing 310 in the vertical direction.

[0039] Based on the above implementation, the second fixing member 400 can be disposed on the side end face 112 in various ways. This embodiment provides the following implementation methods. Please refer to [link / reference]. Figure 7 and Figure 8 A mounting hole 112a is provided on the side end face 112, and the second fastener 400 is configured as a pin, which is installed in the mounting hole 112a.

[0040] It should be noted that, in order to make the chair leg 100 more securely fixed to the central axis, this embodiment provides the following implementation method, please refer to [link / reference]. Figure 1 , Figure 3 , Figure 5 and Figure 8 The chair leg structure also includes a third fixing member 500, which includes a plurality of second connecting arms 510 corresponding to the connecting part 110. The third fixing member 500 is fixed to the upper end face 113 of each connecting part 110 through the second connecting arms 510, thereby strengthening the fixing effect of each connecting part 110 in the horizontal direction and strengthening the fixing effect of each connecting part 110 in the vertical direction.

[0041] Furthermore, both the upper end face 113 and the third fixing member 500 are arranged in a horizontal direction. At this time, the third fixing member 500 can provide a strong inward pulling and fixing effect to each chair leg 100, which can more effectively prevent the lower part of the chair leg 100 from tilting outward and detaching from the central axis due to the inward force when the chair is in use, thereby enhancing the stability of the connection structure between the chair leg 100 and the central axis.

[0042] It should be noted that, in order for the chair leg structure to support the seat cushion, turntable, and other components, this embodiment provides the following implementation method; please refer to [link / reference]. Figure 6 The central shaft assembly also includes an inner shaft 320, with a connecting post 321 formed at the upper end of the inner shaft 320. The third fixing member 500 has a third through hole 520, through which the connecting post 321 passes, enabling the connecting post 321 to connect to other components of the seat cushion and turntable, thereby achieving the effect of the chair leg structure supporting the seat cushion, turntable, and other components.

[0043] It should be noted that the third fixing member 500 being fixed to the upper end face 113 of each connecting part 110 via the second connecting arm 510 can be implemented in various ways. This embodiment provides the following implementation methods; please refer to [link / reference]. Figure 5 and Figure 8 The second connecting arm 510 is provided with a fourth through hole 511, and the upper end face 113 is provided with a second screw hole 113a; the third fixing member 500 is fixed to the upper end face 113 by passing a screw through the fourth through hole 511 and screwing it into the second screw hole 113a.

[0044] In summary, the chair leg structure provided in this application includes: a plurality of chair legs 100, the upper part of each chair leg 100 being laterally bent to form a connecting portion 110, the connecting portion 110 having a lower end face 111 and a side end face 112; a first fixing member 200, the first fixing member 200 including a plurality of first connecting arms 210 corresponding to the connecting portion 110; the first fixing member 200 being fixed to the lower end face 111 to relatively fix the plurality of chair legs 100; and a central shaft assembly 300, the side of the central shaft assembly 300 being vertically and vertically connected to the side end faces 112 of the plurality of connecting portions 110. This allows the chair legs 100 to be securely fixed to the central shaft, reducing the failure rate and extending the service life.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A chair foot structure, characterized by The application relates to a chair leg structure, which comprises: a plurality of chair legs, upper portions of the chair legs being transversely bent to form connecting portions, the connecting portions having lower end faces and side end faces; a first fixing member comprising a plurality of first connecting arms corresponding to the connecting portions, the first fixing member being fixed to the lower end faces so as to relatively fix the plurality of chair legs; a central shaft assembly, side faces of the central shaft assembly being connected to the side end faces of the plurality of connecting portions in a limiting manner.

2. The chair leg structure of claim 1, wherein The lower end faces are arranged horizontally with the first fixing member.

3. The chair leg structure of claim 1, wherein The first connecting arms are provided with first through holes, and the lower end faces are provided with first screw holes. The first fixing member is fixed to the lower end faces by means of screws penetrating through the first through holes and being screwed into the first screw holes.

4. The chair leg structure of claim 3, wherein The lower end faces are formed with first grooves for embedding the first connecting arms, and the first grooves are adapted to the first connecting arms. The first screw holes are located at groove bottoms of the first grooves.

5. The chair leg structure of claim 1, wherein The side end faces are provided with second fixing members. The central shaft assembly comprises a shaft sleeve provided with blind holes or second through holes, and the second fixing members are embedded in the blind holes or the second through holes so as to limit the connecting portions in a vertical manner.

6. The chair foot structure of claim 5, wherein, The side end faces are provided with mounting holes, and the second fixing members are provided in the form of bolts, which are mounted in the mounting holes.

7. The chair leg structure of any one of claims 1-6, wherein, The chair leg structure further comprises a third fixing member comprising a plurality of second connecting arms corresponding to the connecting portions, and the third fixing member is fixed to upper end faces of the connecting portions.

8. The chair leg structure of claim 7, wherein The third fixing member and the upper end faces are arranged horizontally.

9. The chair foot structure of claim 8, wherein, The central shaft assembly further comprises an inner shaft, an upper end of the inner shaft being formed with a connecting column, the third fixing member being formed with a third through hole, and the connecting column penetrating through the third through hole.

10. The chair leg structure of claim 7, wherein The second connecting arms are provided with fourth through holes, and the upper end faces are provided with second screw holes. The third fixing member is fixed to the upper end faces by means of screws penetrating through the fourth through holes and being screwed into the second screw holes.

Images