Office chair

Abstract

The utility model relates to the technical field of office supplies, in particular to an office chair which comprises a bottom frame, a chair seat and a chair back, the chair seat and the chair back are both arranged on the bottom frame, the bottom frame comprises a connecting seat, and the lower end of the chair back is connected with the connecting seat in a sliding mode; the chair back comprises at least two combination parts, the combination parts are detachably connected in the height direction of the chair back, and the side faces of the combination parts are matched to form a curved surface structure attached to the arc line of the back of the human body; the detachable chair back mainly solves the problem that a product is large in size in the packaging process, the chair back is disassembled, so that the size of the product in the packaging state is smaller, and more products can be contained in the same container.

Description

Technical Field

[0001] The utility model relates to the technical field of office supplies, in particular to an office chair. Background Art

[0002] Office chairs are common seats nowadays. Since users often sit and work for long periods of time, whether a chair is comfortable and whether it can bring a good experience to users is an issue worthy of attention.

[0003] Existing chairs generally have the backrest and the lumbar support part as an integrated structure. Although the curved back is designed to fit the back of the human body, since the backrest and the lumbar support part are a fixed integrated structure, different users have different heights, and the corresponding positions of the head and waist are also different when sitting. If a fixed standard structure is used, it cannot adapt to the needs of users of different heights, which is likely to bring a bad experience to users.

[0004] Furthermore, the existing chair back is an integral part, and the entire chair takes up a large space when packed. The chair back is one of the locations that takes up a large space. This problem is most obvious when loading containers. To address the problem of the chair back taking up a large space, technical improvements can be made to allow the chair back to take up as little space as possible during packaging and transportation. Utility Model Content

[0005] The utility model aims to provide an office chair, which can make the volume of products in a packaged state smaller by disassembling the chair back, so that more products can be loaded into a container.

[0006] To achieve this purpose, the utility model adopts the following technical solution: an office chair, comprising a base frame, a seat and a backrest, wherein the seat and the backrest are both arranged on the base frame:

[0007] The base frame includes a connecting seat, and the lower end of the chair back is slidably connected to the connecting seat;

[0008] The chair back comprises at least two combined parts, which are detachably connected along the height direction of the chair back, and the side surfaces of each of the combined parts cooperate to form a curved surface structure that fits the arc of the back of a human body.

[0009] Preferably, the lower end of the combined part located at the lowermost side is slidably connected to the connecting seat, the upper end of the combined part located at the lower side is provided with a first mounting hole, the side of the first mounting hole is provided with a first locking piece, and the lower end of the combined part located at the upper side is provided with a first mounting foot, the first mounting hole is adapted to the first mounting foot, the lower end of the first mounting foot is inserted into the first mounting hole, and is locked and fixed by the first locking piece.

[0010] Preferably, a first card slot is provided on the first mounting foot; the first locking member includes a first mounting block, a first through hole, a first rotating shaft, a first fastener and a first spring, the first mounting block is arranged on the side of the first mounting hole, the first rotating shaft is arranged on the first mounting block, the middle part of the first fastener is movably connected with the first rotating shaft, the first spring is arranged between one end of the first fastener and the first mounting block, the first through hole is opposite to the other end of the first fastener, and the first through hole is connected to the first mounting hole, and the other end of the first fastener passes through the first through hole and is engaged with the first card slot.

[0011] Preferably, a headrest bulge is provided on the uppermost combination portion, and the headrest bulge is opposite to the head of the human body.

[0012] Preferably, a connecting groove is provided at the lower end of the chair back, a connecting block is provided on the connecting seat, the connecting block is adapted to the connecting groove, the connecting block is inserted into the connecting groove, a plurality of strip holes are provided on the connecting block, a plurality of threaded holes are provided on the connecting groove, the strip holes correspond to the threaded holes one by one, and the corresponding strip holes and the threaded holes are connected by bolts.

[0013] Preferably, a protective seat is provided at the lower end of the seat, the protective seat is made of metal, and the protective seat includes a baffle, and the baffle is located directly above the base frame.

[0014] Preferably, armrests are provided on both sides of the seat along the width direction, the lower ends of the armrests are connected to the lower end surface of the seat, and a locking switch is provided between the lower ends of the armrests and the lower end surface of the seat.

[0015] The technical solution provided by the utility model may have the following beneficial effects:

[0016] 1. The disassembly and assembly of the chair back mainly solves the problem of the large volume of the product during packaging. By disassembling the chair back, the volume of the product in the packaged state can be made smaller, and the same container can hold more products; 2. The utility model is installed through the coordination of multiple combination parts. Combination parts with different sides can be provided according to different needs of users, thereby forming a curved surface structure that fits the arc of the user's back, thereby improving the user's riding experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of a chair back in one embodiment of the utility model;

[0019] Figure 3It is a three-dimensional structural schematic diagram of a chair seat in one embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a three-dimensional structure in which two combined parts of an embodiment of the utility model are separated;

[0021] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A in the middle.

[0022] Among them, the base frame 1, the connecting seat 11, the connecting block 111, the strip hole 112, the seat 2, the protective seat 21, the seat back 3, the combination part 31, the first mounting hole 311, the headrest protrusion 312, the first locking member 32, the first mounting block 321, the first through hole 322, the first fastener 323, the first mounting foot 33, the first slot 331, the connecting slot 34, the armrest 4, and the locking switch 5. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Combine the following Figures 1 to 5 , describing an office chair according to an embodiment of the utility model.

[0025] An office chair comprises a base frame 1, a seat 2 and a backrest 3, wherein the seat 2 and the backrest 3 are both arranged on the base frame 1:

[0026] The base frame 1 includes a connecting seat 11, and the lower end of the chair back 3 is slidably connected to the connecting seat 11;

[0027] The chair back 3 includes at least two combination parts 31, and the combination parts 31 are detachably connected along the height direction of the chair back 3. The side surfaces of the combination parts 31 cooperate to form a curved surface structure that fits the arc of the human back.

[0028] The utility model is installed by matching multiple combination parts 31. According to different needs of users, combination parts 31 with different sides can be set, thereby forming a curved surface structure that fits the arc of the user's back and improves the user's riding experience. Generally, according to the approximate range of the user's height, several universal combination parts 31 can be set. These combination parts 31 can be matched to users of different heights, making the product more applicable. By disassembling the chair back, the volume of the product in the packaged state is smaller, and the same container can hold more products.

[0029] Preferably, the lower end of the combination part 31 located at the lowermost side is slidably connected to the connecting seat 11, the upper end of the combination part 31 located at the lower side is provided with a first mounting hole 311, the side of the first mounting hole 311 is provided with a first locking piece 32, and the lower end of the combination part 31 located at the upper side is provided with a first mounting foot 33, the first mounting hole 311 is adapted to the first mounting foot 33, the lower end of the first mounting foot 33 is inserted into the first mounting hole 311, and is locked and fixed by the first locking piece 32.

[0030] The first mounting hole 311 and the first mounting foot 33 are plugged together to fix the first mounting foot 33 in the first mounting hole 311, which is convenient and quick to install. The first locking member 32 is used to lock and fix the first mounting foot 33 to prevent it from being separated or loosened.

[0031] Specifically, a first clamping groove 331 is provided on the first mounting foot 33; the first locking member 32 includes a first mounting block 321, a first through hole 322, a first rotating shaft, a first fastener 323 and a first spring, the first mounting block 321 is arranged on the side of the first mounting hole 311, the first rotating shaft is arranged on the first mounting block 321, the middle part of the first fastener 323 is movably connected with the first rotating shaft, the first spring is arranged between one end of the first fastener 323 and the first mounting block 321, the first through hole 322 is opposite to the other end of the first fastener 323, and the first through hole 322 is connected to the first mounting hole 311, and the other end of the first fastener 323 passes through the first through hole 322 and is clamped with the first clamping groove 331.

[0032] The first spring plays a lifting role, causing one end of the first fastener 323 to deflect toward the side away from the first mounting block 321. Conversely, the other end of the first fastener 323, that is, the end opposite to the first through hole 322, always maintains an inward tightening force. When the first slot 331 of the first mounting foot 33 is installed in place, the other end of the first fastener 323 is clamped in the first slot 331, thereby completing the locking work.

[0033] Preferably, a headrest convex block 312 is provided on the uppermost combination portion 31 , and the headrest convex block 312 is opposite to the head of the human body.

[0034] With the cooperation of different combination parts 31 , the headrest protrusion 312 of the combination part 31 located at the uppermost side is just opposite to the head of the user, further improving the riding experience.

[0035] Preferably, a connecting groove 34 is provided at the lower end of the chair back 3, and a connecting block 111 is provided on the connecting seat 11, the connecting block 111 is adapted to the connecting groove 34, the connecting block 111 is inserted into the connecting groove 34, a plurality of strip holes 112 are provided on the connecting block 111, a plurality of threaded holes are provided on the connecting groove 34, the strip holes 112 correspond to the threaded holes one by one, and the corresponding strip holes 112 and the threaded holes are connected by bolts.

[0036] With this structure, the lower end of the chair back 3 can slide with the connecting seat 11, and the sliding distance is determined by the length of the strip hole 112. In order to avoid a large loose feeling of the chair back 3, the length of the strip hole 112 will not be set too large.

[0037] Preferably, a protective seat 21 is provided at the lower end of the seat 2 , and the protective seat 21 is made of metal. The protective seat 21 includes a baffle, and the baffle is located directly above the base frame 1 .

[0038] In order to improve the safety performance of the office chair, a baffle is provided above the cylinder of the base frame 1 to reinforce the bottom of the seat 2 and prevent the user from being injured when the cylinder fails.

[0039] Preferably, armrests 4 are provided on both sides of the seat 2 along the width direction, the lower ends of the armrests 4 are connected to the lower end surface of the seat 2 , and a locking switch 5 is provided between the lower ends of the armrests 4 and the lower end surface of the seat 2 .

[0040] The armrests 4 can be adjusted via the locking switch 5, and the adjustment direction is the left and right direction of the office chair, that is, the user can adjust the two armrests 4 to different widths according to usage requirements to improve usage comfort.

[0041] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An office chair, comprising a base frame, a seat and a backrest, wherein the seat and the backrest are both arranged on the base frame, characterized in that: The base frame includes a connecting seat, and the lower end of the chair back is slidably connected to the connecting seat; The chair back comprises at least two combined parts, which are detachably connected along the height direction of the chair back, and the side surfaces of each of the combined parts cooperate to form a curved surface structure that fits the arc of the back of a human body.

2. An office chair according to claim 1, characterized in that: The lower end of the combined part located at the lowermost side is slidably connected to the connecting seat, the upper end of the combined part located at the lower side is provided with a first mounting hole, the side of the first mounting hole is provided with a first locking piece, and the lower end of the combined part located at the upper side is provided with a first mounting foot, the first mounting hole is adapted to the first mounting foot, the lower end of the first mounting foot is inserted into the first mounting hole, and is locked and fixed by the first locking piece.

3. An office chair according to claim 2, characterized in that: A first card slot is provided on the first mounting foot; the first locking member includes a first mounting block, a first through hole, a first rotating shaft, a first fastener and a first spring, the first mounting block is arranged on the side of the first mounting hole, the first rotating shaft is arranged on the first mounting block, the middle part of the first fastener is movably connected with the first rotating shaft, the first spring is arranged between one end of the first fastener and the first mounting block, the first through hole is opposite to the other end of the first fastener, and the first through hole is connected to the first mounting hole, and the other end of the first fastener passes through the first through hole and is engaged with the first card slot.

4. An office chair according to claim 1, characterized in that: A headrest convex block is arranged on the uppermost combined part, and the headrest convex block is opposite to the head of the human body.

5. An office chair according to claim 1, characterized in that: A connecting groove is provided at the lower end of the chair back, and a connecting block is provided on the connecting seat. The connecting block is adapted to the connecting groove and inserted into the connecting groove. A plurality of strip holes are provided on the connecting block, and a plurality of threaded holes are provided on the connecting groove. The strip holes correspond to the threaded holes one by one, and the corresponding strip holes and threaded holes are connected by bolts.

6. An office chair according to claim 1, characterized in that: A protective seat is arranged at the lower end of the seat, the protective seat is made of metal, and the protective seat comprises a baffle, and the baffle is located just above the base frame.

7. An office chair according to claim 1, characterized in that: The seat is provided with armrests on both sides along the width direction, the lower ends of the armrests are connected to the lower end surface of the seat, and a locking switch is provided between the lower ends of the armrests and the lower end surface of the seat.

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