Office chair leg and foot assembly with novel connection structure

Abstract

The utility model relates to a rotatable supporting leg column and foot stand assembly of office chair, and relates to an office chair leg and foot assembly with a novel connecting structure. The utility model discloses a chair supporting leg column, and a foot stand which is detachably and fixedly connected with the supporting leg column. The foot stand comprises a central sleeve and a chair foot extending outward. The central sleeve has a leg column hole, and the supporting leg column can be inserted into the leg column hole and tightly matched with the leg column hole. A plurality of axial strip-shaped slot holes are uniformly distributed on the inner surface of the leg column hole. A key groove is also arranged on the inner surface of the leg column hole. A key hole is arranged on the supporting leg column. A key column is also arranged and can be clamped in the key groove. The utility model technical scheme can realize quick, simple and easy disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to an office chair, and more particularly to a rotatable support leg column and foot frame assembly for an office chair. Background Technology

[0002] To improve storage and transportation efficiency and reduce storage and transportation costs, the furniture industry has adopted modular transportation and on-the-spot assembly methods. This requires that the assembly and disassembly of each component be quick, simple, and easy, while also ensuring that the connections between the components are firm and stable to meet usage requirements.

[0003] Existing office chair support legs and frames include a central sleeve and outwardly extending chair legs. The central sleeve has leg posts with cylindrical or tapered through holes. The central sleeve also has radial pin holes penetrating through it, and each end of the support leg has a radial pin hole penetrating through that end. During installation, the support leg is inserted into the leg posts, aligning the pin holes on the support leg with the pin holes on the central sleeve. A pin is then inserted, penetrating both the pin holes, to securely connect the support leg to the frame.

[0004] The existing technology has the following drawbacks: First, when inserting the support leg into the leg hole, the pin hole on the support leg becomes invisible after insertion, making it difficult to precisely align the pin hole on the support leg with the seat pin hole on the center sleeve, thus preventing pin insertion. Alignment relies almost entirely on experience and skill, requiring experienced professionals and making installation difficult. Even then, it is time-consuming. Second, the connection between the support leg and the leg hole is a tight surface-to-surface contact, making disassembly of the support leg and the leg frame very difficult. Especially after prolonged use, the support leg and leg hole appear to be fused together, making disassembly extremely difficult and requiring specialized tools. Thus, this structural defect in the existing technology prevents quick and easy assembly and disassembly. Summary of the Invention

[0005] The purpose of this utility model is to provide an office chair leg assembly with a novel connection structure, which can be quickly, easily, and conveniently assembled and disassembled.

[0006] This utility model discloses an office chair leg assembly with a novel connection structure, including chair support legs and a frame detachably and fixedly connected to the support legs. The frame includes a central sleeve and outwardly extending chair legs. The central sleeve has leg holes, and the support legs can be inserted into the leg holes and tightly fitted therein. The feature is that several axially distributed strip-shaped slots are provided on the inner surface of the leg holes; a keyway is also provided on the inner surface of the leg holes; a key hole is provided on the support legs; and a key post portion is placed in the key hole and can be locked in the keyway.

[0007] In the aforementioned office chair leg assembly with a novel connection structure, the keyway is located within one of the strip-shaped slots, and the keyhole is a blind hole located on the support leg column.

[0008] The above-mentioned office chair leg assembly with a novel connection structure has a tapered hole for the leg post and a tapered column at the end of the supporting leg post.

[0009] In the aforementioned office chair leg assembly with a novel connection structure, the key post portion is placed inside the key hole and fits tightly with the key hole.

[0010] In the aforementioned office chair leg assembly with a novel connection structure, the strip-shaped slot is a trapezoidal slot, and the slot opening width is greater than the slot bottom width.

[0011] Compared with the prior art, the technical solution of this utility model has the following advantages: 1. An axial strip-shaped groove is provided on the inner surface of the leg post hole, which reduces the contact area between the support leg post and the leg post hole. It can even make the support leg post and the leg post hole make line contact. This makes disassembly easy. 2. A key post is placed in the key hole of the support leg post and can be locked in the keyway of the center sleeve, so that it is no longer necessary to align the pin hole on the support leg post with the seat pin hole on the center sleeve, and no experienced professionals are required for installation, making assembly easy and simple. Attached Figure Description

[0012] Figure 1 This is a perspective view of an office chair leg assembly with a novel connection structure according to this utility model.

[0013] Figure 2 yes Figure 1 The exploded view shown.

[0014] Figure 3 This is a three-dimensional view of the tripod of this utility model.

[0015] Figure 4 This is a cross-sectional view of an office chair leg assembly with a novel connection structure according to this utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0017] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The illustration shows an embodiment of an office chair leg assembly with a novel connection structure according to this utility model. It includes a chair support leg 1 and a foot frame 2 detachably and fixedly connected to the support leg 1. The foot frame 2 includes a central sleeve 21 and outwardly extending chair legs 22. The central sleeve 21 has leg holes 211 into which the support leg 1 can be inserted and tightly fitted. Several evenly distributed axial strip-shaped slots 2111 are provided on the inner surface of the leg holes 211. In this embodiment, six axial strip-shaped through holes are provided, all parallel to the center line of the leg holes. This reduces the contact area between the outer surface of the support leg 1 and the inner surface of the leg holes 211 compared to existing technologies, while still maintaining surface-to-surface contact. If a sufficient number of strip-shaped slots 2111 are provided, arranged together, or if trapezoidal slots are used with a slot opening width greater than the slot bottom width, line contact between the support leg 1 and the leg holes 211 can be achieved, making disassembly easier. A keyway 2112 is provided on the inner surface of the leg post hole 211, and a key hole 11 is provided on the support leg post 1. A key post 3 is also provided, with a portion placed in the key hole 11 and capable of being engaged in the keyway 2112. The key post 3 and the key hole 11 are tightly fitted together. In this embodiment, the keyway 2112 is located in one of the strip-shaped slot holes 2111, and the key hole 11 is a blind hole. Thus, by placing the key post 3 portion in the key hole 11 and engaging in the keyway 2112, the support leg post 1 and the center sleeve 21 can be tightly and securely connected, preventing loosening or relative rotation between the support leg post 1 and the center sleeve 21.

[0018] Furthermore, the leg post hole 211 is a tapered hole, and the end of the support leg post 1 is a tapered post. This makes the fit between the support leg post 1 and the central sleeve 21, as well as the locking of the key post 3 in the keyway 2112, more tight, firm, and stable.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. An office chair leg assembly with a novel connection structure, comprising chair support legs and a frame detachably and fixedly connected to the support legs, the frame comprising a central sleeve and outwardly extending chair legs, the central sleeve having leg posts holes into which the support legs can be inserted and tightly fitted, characterized in that... The inner surface of the leg post hole is provided with several axially distributed strip-shaped slots; the inner surface of the leg post hole is also provided with a keyway, the support leg post is provided with a key hole, and a key post portion is placed in the key hole and can be locked in the keyway.

2. The office chair leg assembly with a novel connection structure according to claim 1, characterized in that... The keyway is located in one of the strip-shaped slots, and the keyhole is a blind hole located on the support leg column.

3. An office chair leg assembly with a novel connection structure according to claim 1 or 2, characterized in that... The leg post hole is a conical hole, and the end of the supporting leg post is a conical post.

4. The office chair leg assembly with a novel connection structure according to claim 3, characterized in that... The key post portion is placed inside the key hole and fits tightly with the key hole.

5. The office chair leg assembly with a novel connection structure according to claim 4, characterized in that... The strip-shaped slot is a trapezoidal slot, with the slot opening width being greater than the slot bottom width.

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