Office chair provided with a chair leg stabilizing structure

Abstract

An office chair with chair leg stabilizing structure, comprising a seat plate, two chair legs in contact with the ground arranged below the seat plate, and a foot pad detachably mounted at the bottom of the chair leg, each chair leg is provided with two foot pads, and a length adjusting assembly is connected between the two foot pads on each chair leg, the length adjusting assembly is used for adjusting the distance between the two foot pads on each chair leg; two locking members are arranged on the length adjusting assembly, and the two locking members on each length adjusting assembly are used for locking the position of the corresponding foot pad, thereby solving the technical problems of easy displacement and functional failure of the existing office chair foot pad.

Description

Technical Field

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

[0002] Office chairs, as widely used furniture in daily office settings, directly affect the user experience and lifespan of their legs due to the stability and practicality of their leg structure. Currently, most mainstream office chairs on the market typically have plastic foot pads fitted to the outer walls of the legs (especially the section of the legs closest to the ground) to reduce friction between the legs and the ground, lower noise during movement, and prevent scratches on the floor and legs.

[0003] Most office chair plastic foot pads are designed as hollow cylindrical tubes. To facilitate fitting onto the outer wall of the chair leg, a slit parallel to the tube's axis is cut on the side of the hollow cylindrical tube. During installation, the operator uses external force to pull open the slit, temporarily enlarging the tube's diameter. After the foot pad is fitted onto the outer wall of the chair leg, the elastic restoring properties of the plastic material ensure that the inner wall of the foot pad fits tightly against the outer wall of the chair leg, thus completing the fixation.

[0004] However, the existing foot pad structure has significant drawbacks in actual use: because the foot pads rely solely on the elasticity of the plastic itself to adhere and fix to the outer wall of the chair legs, their fixing strength is low, making it difficult to resist the axial forces generated when the office chair moves, the user adjusts their sitting posture, or experiences minor impacts. Specifically, after a period of use, the foot pads tend to shift along the axial direction of the chair legs, gradually detaching from the section of the chair legs closest to the ground, and eventually sliding to the vertical middle or upper part of the chair legs.

[0005] When the foot pads are moved to the vertical part of the chair legs, their original functions of "reducing friction between the chair legs and the ground and protecting the ground and chair legs" are completely lost. On the one hand, the exposed ends of the chair legs are in direct contact with the ground, which can easily scratch the floor (such as wooden floors or tiles). At the same time, the ends of the chair legs will also be worn and deformed due to friction and collision. On the other hand, without the cushioning of the foot pads when moving the office chair, it will generate more noise, and the hard contact between the chair legs and the ground will reduce the smoothness of movement, affecting the user experience. In addition, the moved foot pads may also cause a feeling of jamming when the user moves the chair, and there is even a potential risk that the chair legs will become unbalanced due to the foot pads accidentally falling off, which cannot meet the needs of long-term stable use of office chairs. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an office chair with a stable leg structure, which solves the technical problems of easy displacement and functional failure of existing office chair leg pads.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An office chair with a leg stabilization structure includes a seat, two legs located below the seat and in contact with the ground, and foot pads detachably installed at the bottom of the legs. Each leg has two foot pads, and a length adjustment component connects the two foot pads on each leg. The length adjustment component is used to adjust the distance between the two foot pads on each leg. The length adjustment component has two locking elements, which are used to lock the corresponding foot pad positions.

[0008] Working principle: Adjust the distance between the two foot pads using the length adjustment component, then install the foot pads at the bottom of the chair legs and lock the position of the foot pads using the locking mechanism.

[0009] Beneficial effects: 1. This utility model completely solves the problem of existing office chair foot pads relying solely on elastic plastic adhesion for fixation, which easily shifts along the axial direction of the chair leg, by setting a length adjustment component between the two foot pads on each chair leg and using a locking component to lock the position of the foot pads. The length adjustment component and locking component can reliably limit the axial position of the foot pads, preventing them from sliding to the vertical part of the chair leg during office chair movement, posture adjustment, or minor collisions. This ensures that the foot pads are always in the working position at the bottom of the chair leg, continuously reducing friction between the chair leg and the ground, protecting the ground and chair leg, and reducing movement noise, significantly improving the stability and service life of the office chair leg structure.

[0010] 2. The length adjustment component allows for flexible adjustment of the distance between the two foot pads on each chair leg, eliminating the need for separate design for chair legs of specific lengths and enabling it to adapt to various lengths of office chair legs on the market. By adjusting the length of the length adjustment component, the two foot pads are precisely fitted to the outer wall of the chair leg and secured with locking components, greatly improving the versatility and applicability of the structure and reducing production and adaptation costs. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the prior art mentioned in the background section; Figure 2 A schematic diagram of the structure for mounting the foot pads on the chair legs; Figure 3 for Figure 2 A cross-sectional structural diagram of the middle sleeve and connecting strip.

[0012] In the above attached diagram: 1. Seat plate; 2. Chair leg; 3. Foot pad; 41. Sleeve; 42. Connecting strip; 5. Limiting block; 6. Blocking block; 7. Strip hole; 8. Mounting groove; 9. Bolt; 91. Nut. Detailed Implementation

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0014] Example: This embodiment discloses an office chair with a leg stabilization structure, such as... Figures 1-3 As shown, the chair includes: a seat 1: serving as the main support of the office chair, using a conventional office chair seat 1 structure (composite board with a sponge padding layer), for users to sit on. Two chair legs 2, which are in contact with the ground, are bolted to the seat 1. The two chair legs 2 are symmetrically distributed on both sides of the bottom of the seat 1, and are made of high-strength metal (such as aluminum alloy) to ensure support stability; foot pads 3: using a hollow cylindrical tube structure made of existing plastic material, with slits parallel to the axial direction on the side of the tube (for easy fitting onto the outer wall of the chair legs 2). Two foot pads 3 are detachably installed on the bottom of each chair leg 2, spaced apart along the axial direction of the chair leg 2, to provide cushioning and scratch protection; a length adjustment component: connected between the two foot pads 3 on the same chair leg 2, used to adjust the distance between the two foot pads 3 to accommodate chair legs 2 of different lengths; and a locking mechanism: located on the length adjustment component, used to lock the position of the foot pads 3.

[0015] The sleeve 41 is a cylindrical hollow sleeve 41 with both ends through, and the material is hard plastic (ABS plastic); the length of the sleeve 41 is designed according to the size of the regular chair leg 2 (usually 5-10cm, which can be adjusted according to actual needs), and its side wall is also provided with a strip hole 7 extending along the axis.

[0016] The connecting strip 42 is a long strip structure with a circular cross-section, and its material is the same as that of the sleeve 41 (to ensure structural strength and wear resistance). One end of the two connecting strips 42 is fixedly connected to the side wall of the two foot pads 3 respectively (the connection method is integral injection molding to avoid loosening), and the other end is inserted into the tube body from the two ends of the sleeve 41 respectively, and can move freely along the axial direction of the sleeve 41. The length of the entire component can be adjusted by "changing the length of the two connecting strips 42 extending into the sleeve 41".

[0017] The limiting block 5 is a block structure with a circular cross-section and a diameter larger than that of the connecting strip 42 (usually 2-3 mm larger than the diameter of the connecting strip 42). The material is the same as that of the connecting strip 42. A limiting block 5 (through integral molding) is fixedly installed at the end of each connecting strip 42 that extends into the sleeve 41. The outer diameter of the limiting block 5 is adapted to the inner diameter of the sleeve 41, so that the limiting block 5 can slide smoothly along the inner wall of the sleeve 41 and can prevent the connecting strip 42 from radially shifting during movement.

[0018] The annular blocking block 6 is an annular structure with a through hole on the inner side. It is made of the same material as the sleeve 41 and is fixedly installed on the inner wall of both ends of the sleeve 41 (through integral molding). Its outer wall is tightly fitted with the inner wall of the sleeve 41, and its inner wall is in contact with the outer wall of the connecting strip 42 (without affecting the axial movement of the connecting strip 42). Since the diameter of the limiting block 5 is larger than the diameter of the through hole of the annular blocking block 6, when the connecting strip 42 moves outward to the limit position, the limiting block 5 will abut against the inner side of the annular blocking block 6, thereby preventing the connecting strip 42 from coming out of the sleeve 41 and ensuring the integrity of the component structure.

[0019] The strip hole 7 is opened on the top surface of the sleeve 41 (extending along the axial direction of the sleeve 41), the length of which is adapted to the length of the sleeve 41 (ensuring that the connecting strip 42 can be locked by the bolt 9 within the maximum adjustment range), the width of which is slightly larger than the diameter of the bolt 9 (to facilitate the movement of the bolt 9 along the strip hole 7), and smaller than the diameter of the bolt 9 nut 91 (to prevent the nut 91 from falling into the sleeve 41).

[0020] Mounting groove 8 is formed on the top surface of each limiting block 5. The groove is provided with internal thread, the thread specification of which is adapted to the external thread of bolt 9, for forming a threaded connection with bolt 9.

[0021] Bolt 9 serves as a locking element, comprising a nut 91 and a threaded shank. The length of the shank is greater than the wall thickness of the sleeve 41 (ensuring that the shank can pass through the slot 7 and be screwed into the mounting groove 8), and the diameter of the nut 91 is greater than the width of the slot 7 (for locking by pressing the outer wall of the sleeve 41).

[0022] Working principle: When it is necessary to install or adjust the foot pads 3, first loosen the bolts 9 counterclockwise to separate the nuts 91 from the outer wall of the sleeve 41. At this time, the limiting block 5 can drive the connecting strip 42 to move freely along the axial direction of the sleeve 41. According to the length of the chair leg 2 (the required spacing of the foot pads 3), push the two foot pads 3 to move the connecting strip 42 to the appropriate position in the sleeve 41, ensuring that both foot pads 3 can fit tightly against the outer wall of the chair leg 2. After the position is determined, tighten the bolts 9 clockwise to make the nuts 91 tightly press against the top outer wall of the sleeve 41. At the same time, the screw and the internal thread of the mounting groove 8 are tightly engaged, and the position of the limiting block 5 is fixed by friction, thereby locking the connecting strip 42 and the foot pads 3 to prevent the foot pads 3 from shifting along the axial direction of the chair leg 2.

[0023] If the foot pad 3 needs to be replaced or the spacing needs to be adjusted, simply loosen the bolt 9 counterclockwise to release the pressure of the nut 91 on the sleeve 41, and then push the foot pad 3 to adjust its position. The operation is convenient and does not require disassembling the entire component.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An office chair with a leg stabilization structure, comprising a seat (1), two chair legs (2) disposed below the seat (1) and in contact with the ground, and foot pads (3) detachably installed at the bottom of the chair legs (2), characterized in that: Two foot pads (3) are provided on each chair leg (2). A length adjustment component is connected between the two foot pads (3) on each chair leg (2). The length adjustment component is used to adjust the distance between the two foot pads (3) on each chair leg (2). The length adjustment component is provided with two locking parts. The two locking parts on each length adjustment component are used to lock the position of the corresponding foot pad (3).

2. An office chair with a leg stabilization structure according to claim 1, characterized in that: The length adjustment assembly includes a cylindrical hollow sleeve (41) with both ends through it, and two connecting strips (42) that can move axially along the sleeve (41) inside the sleeve (41). The connecting strips (42) have a circular cross-section. One end of each of the two connecting strips (42) is fixed to the side wall of the two foot pads (3), and the other end of each of the two connecting strips (42) passes through the two ends of the sleeve (41).

3. An office chair with a leg stabilization structure according to claim 2, characterized in that: The other end of the two connecting strips (42) is fixedly provided with a limiting block (5) inside the sleeve (41); the inner wall of both ends of the sleeve (41) is fixedly provided with annular blocking blocks (6), the outer wall of the blocking block (6) is fixedly connected to the inner wall of the sleeve (41), and the inner wall is in contact with the outer wall of the connecting strip (42); the cross-section of the limiting block (5) is circular, the diameter of the limiting block (5) is larger than the diameter of the connecting strip (42), and the outer wall of the limiting block (5) abuts against the inner wall of the sleeve (41).

4. An office chair with a leg stabilization structure according to claim 3, characterized in that: The sleeve (41) has a strip hole (7) extending axially along the side wall of the sleeve (41), and each of the limiting blocks (5) has an installation groove (8); the locking element is a bolt (9), which is threaded into the installation groove (8). Each bolt (9) includes a nut (91). After passing through the strip hole (7), each bolt (9) is inserted into the installation groove (8) on the corresponding limiting block (5). When the nut (91) abuts against the outer wall of the sleeve (41), it is used to lock the corresponding connecting strip (42).

5. An office chair with a leg stabilization structure according to claim 2, characterized in that: The connecting strip (42) is located on the side of the foot pad (3) facing the other chair leg (2).

6. An office chair with a leg stabilization structure according to claim 4, characterized in that: The strip hole (7) is provided on the top surface of the sleeve (41), and the mounting groove (8) is provided on the top surface of the corresponding limiting block (5).

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