Adjustable office chair

Abstract

The utility model relates to the technical field of office chairs, and discloses an adjustable office chair which comprises a drain pipe and a seat cushion, an adjusting component is arranged at the bottom end of the seat cushion, armrest components are mounted on two sides of the seat cushion, a lifting mechanism is connected to the rear end of the seat cushion, and a chair back is fixedly connected to the inner wall of the lifting mechanism. According to the utility model, under the cooperative use of the lifting mechanism and the armrest assembly, the rotation motion of the screw rod is further realized under the occlusion of the first bevel gear and the second bevel gear, and the lifting of the backrest is realized by utilizing the positioning block arranged on the outer edge of the screw rod; according to the height-adjustable office chair, the comfort level of a user on the office chair can be improved according to the height requirement, meanwhile, a plurality of uniformly distributed locking holes are formed in the bottoms of the two sides of the armrest, so that horizontal adjustment of the armrest is conveniently realized, the practical performance of the device structure is greatly improved, and the requirements are met.

Description

Technical Field

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

[0002] With the continuous development of society and the continuous updating of science and technology, people's requirements for the quality of life and work are getting higher and higher, and people's requirements for the office environment are also constantly improving. Office chairs refer to the backrest chairs that office workers sit on when they work on the desk in a sitting position, which provides conditions for people's office work. Most of the existing office chairs are difficult to adjust the height of the backrest position, making it difficult to achieve the lifting and lowering of the backrest function of the office chair according to different height requirements, thereby reducing the comfort of the backrest position. In view of this, we propose an adjustable office chair. Utility Model Content

[0003] The purpose of the utility model is to provide an adjustable office chair to solve the problems in the above-mentioned background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: an adjustable office chair, comprising a seat cushion, an adjustment assembly is arranged at the bottom of the seat cushion, armrest assemblies are installed on both sides of the seat cushion, a lifting mechanism is connected to the rear end of the seat cushion, and a chair back is fixedly connected to the inner wall of the lifting mechanism;

[0005] The lifting mechanism includes a support plate, a rectangular frame, a hollow chamber, a forward and reverse motor, a first bevel gear, a second bevel gear, a screw, a bearing ring, a positioning block and an open groove. The support plate is fixed to the bottom of the seat cushion by bolts, the upper end of the support plate is connected to the rectangular frame, the inner cavity of the rectangular frame is provided with a hollow chamber, the outer side of the rectangular frame is provided with a forward and reverse motor, the output end of the forward and reverse motor is connected to the first bevel gear, one side of the first bevel gear is meshingly connected to the second bevel gear, the top of the second bevel gear is fixedly connected to the screw, the top of the screw is rotatably connected to the bearing ring, a positioning block is slidably provided on the outer edge of the screw, and an open groove is provided on the inner side wall of the rectangular frame.

[0006] Preferably, the adjustment assembly includes a five-pointed claw, a lifting cylinder, a handle and a mounting plate, the mounting plate is arranged at the bottom of the seat cushion, one side of the mounting plate is connected to the handle, the bottom of the mounting plate is connected to the lifting cylinder, and the bottom of the lifting cylinder is connected to the five-pointed claw.

[0007] Preferably, the armrest assembly comprises a positioning groove, a connecting rod and an armrest, the positioning groove is arranged at two sides of the bottom of the seat cushion, a connecting rod is movably mounted on the inner wall of the positioning groove, and an armrest is fixedly connected to the top of the connecting rod.

[0008] Preferably, the inner wall of the positioning groove is provided with a plurality of evenly distributed locking holes, the connecting rod is L-shaped, and a locking head is formed on the connecting rod relative to the outer wall of the positioning groove.

[0009] Preferably, the length of the open slot is shorter than the length of the hollow chamber.

[0010] Preferably, a roller is provided at the end of the five-cornered claw.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model adopts the lifting mechanism and the armrest assembly to cooperate with each other, further utilizes the engagement of the first bevel gear and the second bevel gear to facilitate the rotation of the screw rod, and utilizes the positioning block arranged on the outer edge of the screw rod to realize the lifting of the backrest, which can improve the comfort of the office chair for users according to their height requirements. At the same time, a number of evenly distributed locking holes are arranged on the bottom of both sides of the armrest position to facilitate the horizontal adjustment of the position, which greatly improves the practical performance of the device structure and meets the needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an adjustable office chair of the utility model;

[0014] Figure 2 This is a structural analysis diagram of a lifting mechanism of an adjustable office chair of the utility model;

[0015] Figure 3 The utility model is an adjustable office chair Figure 2 A magnified view of the structure in the middle;

[0016] Figure 4 This is another view of the overall structure of an adjustable office chair of the utility model.

[0017] In the figure: 1. adjustment component; 101. roller; 102. pentagonal claw; 103. lifting cylinder; 104. handle; 105. mounting plate; 2. seat cushion; 3. chair back; 4. lifting mechanism; 401. support plate; 402. rectangular frame; 403. bearing ring; 404. screw rod; 405. hollow chamber; 406. opening groove; 407. positioning block; 408. second bevel gear; 409. first bevel gear; 410. forward and reverse motor; 5. armrest assembly; 501. armrest; 502. connecting rod; 503. positioning groove; 504. locking hole; 505. locking head. DETAILED DESCRIPTION

[0018] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Example: Refer to Figure 1-Figure 4The utility model provides an adjustable office chair including a seat cushion 2, an adjustment component 1 is arranged at the bottom of the seat cushion 2, armrest components 5 are installed on both sides of the seat cushion 2, a lifting mechanism 4 is connected to the rear end of the seat cushion 2, and a chair back 3 is fixedly connected to the inner wall of the lifting mechanism 4;

[0025] The lifting mechanism 4 includes a support plate 401, a rectangular frame 402, a hollow chamber 405, a forward and reverse motor 410, a first bevel gear 409, a second bevel gear 408, a screw rod 404, a bearing ring 403, a positioning block 407 and an open groove 406. The support plate 401 is fixed to the bottom of the cushion 2 by bolts, the upper end of the support plate 401 is connected to the rectangular frame 402, the inner cavity of the rectangular frame 402 is provided with a hollow chamber 405, the outer side of the rectangular frame 402 is provided with a forward and reverse motor 410, the output end of the forward and reverse motor 410 is connected to the first bevel gear 409, one side of the first bevel gear 409 is meshingly connected to the second bevel gear 408, the top of the second bevel gear 408 is fixedly connected to the screw rod 404, the top of the screw rod 404 is rotatably connected to the bearing ring 403, the outer edge of the screw rod 404 is slidably provided with a positioning block 407, and the inner side wall of the rectangular frame 402 is provided with an open groove 406.

[0026] Among them: the adjustment component 1 includes a pentagonal claw 102, a lifting cylinder 103, a handle 104 and a mounting plate 105, the mounting plate 105 is arranged at the bottom of the seat cushion 2, the handle 104 is connected to one side of the mounting plate 105, the lifting cylinder 103 is connected to the bottom of the mounting plate 105, and the pentagonal claw 102 is connected to the bottom of the lifting cylinder 103.

[0027] The armrest assembly 5 includes a positioning groove 503, a connecting rod 502 and an armrest 501. The positioning groove 503 is provided at both sides of the bottom of the seat cushion 2. The connecting rod 502 is movably mounted on the inner wall of the positioning groove 503. The top of the connecting rod 502 is fixedly connected to the armrest 501.

[0028] The inner wall of the positioning groove 503 is provided with a plurality of evenly distributed locking holes 504 . The connecting rod 502 is L-shaped. A locking head 505 is formed on the connecting rod 502 relative to the outer wall of the positioning groove 503 .

[0029] Wherein: the length of the opening slot 406 is shorter than the length of the hollow chamber 405 .

[0030] Wherein: a roller 101 is arranged at the end of the five-angle claw 102 .

[0031] The working principle of the embodiment of the utility model: when the adjustable office chair is used, according to the requirements of people of different heights, after sitting on the seat cushion 2, the first bevel gear 409 at the output end can be driven by the transmission shaft under the drive of the electric spindle of the forward and reverse motor 410, so that the first bevel gear 409 meshes with the second bevel gear 408 on one side, and then the screw rod 404 set on the second bevel gear 408 can rotate, and the top of the screw rod 404 is rotatably connected with the bearing ring 403 to improve the stability of the device structure. At the same time, the positioning block 407 set on the outer wall of the screw rod 404 can complete the sliding setting with the open groove 406 on one side, and the positioning block 407 can be adjusted to the position of the screw rod 404. One end of the positioning block 407 is connected to the chair back 3 to realize the lifting and lowering adjustment process. The position of the handle 104 can be adjusted at the bottom of the seat cushion 2 so that the lifting cylinder 103 can realize the lifting and lowering adjustment. The five-pointed claw 102 and the roller 101 arranged at the bottom facilitate the movement of the position, which greatly improves the stability of the device structure. At the same time, positioning grooves 503 are arranged on both sides of the bottom of the seat cushion 2, which can complete the locking connection with the locking head 505 through the locking hole 504 on the surface, so that the connecting rod 502 at the bottom position can support the armrest 501 at the top, thereby completing the horizontal adjustment process of the armrest 501 position. It is easy to operate and meets the needs.

[0032] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An adjustable office chair, characterized in that: include: A seat cushion (2), wherein an adjustment component (1) is arranged at the bottom end of the seat cushion (2), armrest components (5) are installed on both sides of the seat cushion (2), a lifting mechanism (4) is connected to the rear end of the seat cushion (2), and a chair back (3) is fixedly connected to the inner wall of the lifting mechanism (4); The lifting mechanism (4) comprises a support plate (401), a rectangular frame (402), a hollow chamber (405), a forward and reverse motor (410), a first bevel gear (409), a second bevel gear (408), a screw rod (404), a bearing ring (403), a positioning block (407) and an open slot (406), wherein the support plate (401) is fixed to the bottom of the seat cushion (2) by bolts, the upper end of the support plate (401) is connected to the rectangular frame (402), the inner cavity of the rectangular frame (402) is provided with a hollow chamber (405), and the rectangular A forward and reverse motor (410) is arranged outside the frame (402); an output end of the forward and reverse motor (410) is connected to a first bevel gear (409); one side of the first bevel gear (409) is meshingly connected to a second bevel gear (408); a screw rod (404) is fixedly connected to the top of the second bevel gear (408); a bearing ring (403) is rotatably connected to the top of the screw rod (404); a positioning block (407) is slidably arranged on the outer edge of the screw rod (404); and an opening groove (406) is provided on the inner wall of the rectangular frame (402).

2. The adjustable office chair according to claim 1, characterized in that: The adjustment assembly (1) comprises a pentagonal claw (102), a lifting cylinder (103), a handle (104) and a mounting plate (105); the mounting plate (105) is arranged at the bottom of the seat cushion (2); one side of the mounting plate (105) is connected to the handle (104); the bottom of the mounting plate (105) is connected to the lifting cylinder (103); and the bottom of the lifting cylinder (103) is connected to the pentagonal claw (102).

3. The adjustable office chair according to claim 1, characterized in that: The armrest assembly (5) comprises a positioning groove (503), a connecting rod (502) and an armrest (501); the positioning groove (503) is arranged at two sides of the bottom of the seat cushion (2); the connecting rod (502) is movably mounted on the inner wall of the positioning groove (503); and the top of the connecting rod (502) is fixedly connected to the armrest (501).

4. The adjustable office chair according to claim 3, characterized in that: The inner wall of the positioning groove (503) is provided with a plurality of evenly distributed locking holes (504); the connecting rod (502) is L-shaped; and a locking head (505) is formed on the connecting rod (502) relative to the outer wall of the positioning groove (503).

5. The adjustable office chair according to claim 1, characterized in that: The length of the opening slot (406) is shorter than the length of the hollow chamber (405).

6. The adjustable office chair according to claim 2, characterized in that: A roller (101) is provided at the end of the five-cornered claw (102).

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