Portable chair

Abstract

The utility model discloses a portable chair which comprises a chair surface and a chair back assembly, the rear side of the top of the chair surface is movably connected with the chair back assembly, the chair back assembly comprises a mounting plate, and the left side and the right side of the top of the mounting plate are fixedly connected with vertical plates. The chair seat, the chair back assembly, the mounting plate, the vertical plate, the connecting shaft, the chair back, a first clamping groove, a first threaded groove, a first threaded rod, a connecting block, a second clamping groove, a movable groove, a connecting groove, a positioning mechanism, a moving groove, a sliding rod, a moving block, a second clamping block, a second threaded rod, a threaded block, a rotating block, chair legs, a mounting pipe and a locking baffle are matched with one another; the effect of conveniently disassembling and replacing the chair back is achieved, so that the market demand is greatly met.

Description

Technical Field

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

[0002] As a tool mainly used for people to sit and rest or climb, chairs not only make people's lives convenient and comfortable, but also create convenient conditions for work and improve efficiency. Therefore, seats have always been an indispensable piece of furniture in people's lives.

[0003] At present, the patent application number is CN201120502789.2. The utility model discloses a portable chair, which belongs to furniture and mainly solves the problem that traditional chairs are inconvenient to carry. It includes a seat, a backrest and legs. The seat and backrest are connected by hinges. Both ends of the lower surface of the seat are symmetrically provided with leg mounting tubes. The legs are trapezoidal frames. The top edges of the legs are movable through the leg mounting tubes. A fixed locking baffle is provided on the outer side of the leg mounting tubes.

[0004] However, in actual use, the above patented portable chair has the following defects: it is not convenient to disassemble and replace the chair back, and it is difficult to meet market demand. For this reason, we propose a portable chair. Utility Model Content

[0005] The purpose of the utility model is to provide a portable chair to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a portable chair, comprising:

[0007] Seat;

[0008] A backrest assembly, wherein the backrest assembly is movably connected to the top rear side of the seat surface, the backrest assembly comprises a mounting plate, the left and right sides of the top of the mounting plate are fixedly connected to vertical plates, the lower part between the two vertical plates is fixedly connected by a connecting shaft, the surface of the connecting shaft is rotatably connected to the backrest, the left and right sides of the backrest are provided with a first clamping groove, the vertical plate is provided with a first threaded groove at a position close to one side of the backrest and corresponding to the first clamping groove, the first threaded rod is movably clamped inside the first clamping groove, one end of the first threaded rod close to the vertical plate sequentially penetrates the first clamping groove and the first threaded groove and extends to the outside of the first threaded groove and is fixedly connected to a handle, the first threaded rod is threadedly connected to the first threaded groove, a connecting block is fixedly connected to the bottom center of the mounting plate, and second clamping grooves are provided at the left and right sides of the connecting block;

[0009] A movable groove, a movable groove is provided on the rear side of the seat surface, a connecting groove is provided at the position of the connecting block at the top of the inner wall of the movable groove, the bottom of the connecting block sequentially passes through the connecting groove and the movable groove and extends to the inside of the movable groove, the connecting block is movably engaged with the connecting groove, and the connecting block is movably connected with the movable groove;

[0010] A positioning mechanism is provided in the movable groove;

[0011] Chair legs, the bottom of the seat surface is movably connected with chair legs on both sides, and the upper surface of the chair legs is movably sleeved with mounting tubes, and the top of the mounting tubes is fixedly connected with the bottom of the seat surface;

[0012] The bottom of the chair seat is fixedly connected to two locking baffles on both sides, and the locking baffles are in movable contact with the chair legs.

[0013] Furthermore, the positioning mechanism comprises a movable groove and a rotating block, two movable grooves are symmetrically provided at the bottom of the inner wall of the movable groove, and the left and right sides of the inner wall of the movable groove are fixedly connected by a sliding rod.

[0014] Furthermore, a moving block is slidably connected to the surface of the sliding rod and one side close to the connecting block, and the moving block is movably connected to the moving groove.

[0015] Furthermore, the top of the moving block passes through the moving slot and extends to the outside of the moving slot, and the second clamping block is movably clamped inside the second clamping slot.

[0016] Furthermore, the second clamping block is fixedly connected to the moving block.

[0017] Furthermore, a bearing is fixedly installed on the upper side of the moving block away from the connecting block, a second threaded rod is rotatably connected to the side of the bearing away from the connecting block, and a threaded block is threadedly connected to the surface of the second threaded rod away from the bearing.

[0018] Furthermore, the bottom of the threaded block is fixedly connected to the bottom of the inner wall of the movable groove, and one end of the second threaded rod away from the bearing is fixedly connected to a rotating block.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The utility model achieves the effect of facilitating the disassembly and replacement of the chair back through the cooperation of the chair surface, chair back assembly, mounting plate, vertical plate, connecting shaft, chair back, first clamping groove, first threaded groove, first threaded rod, connecting block, second clamping groove, movable groove, connecting groove, positioning mechanism, movable groove, sliding rod, movable block, second clamping block, second threaded rod, threaded block, rotating block, chair leg, mounting tube and locking baffle, thereby greatly meeting market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view structural schematic diagram of the utility model;

[0022] Figure 2 It is a side view structural schematic diagram of the utility model;

[0023] Figure 3 It is a rear view structural schematic diagram of the utility model;

[0024] Figure 4 It is a rear structural cross-sectional view of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the connection block of the utility model.

[0026] In the figure: 1. chair seat; 2. chair back assembly; 201. mounting plate; 202. vertical plate; 203. connecting shaft; 204. chair back; 205. first slot; 206. first threaded slot; 207. first threaded rod; 208. connecting block; 209. second slot; 3. movable slot; 4. connecting slot; 5. positioning mechanism; 501. movable slot; 502. sliding rod; 503. movable block; 504. second block; 505. second threaded rod; 506. threaded block; 507. rotating block; 6. chair leg; 7. mounting tube; 8. locking baffle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1-5A portable chair comprises a seat surface 1 and a seat back assembly 2, wherein the seat back assembly 2 is movably connected to the top rear side of the seat surface 1, and the seat back assembly 2 comprises a mounting plate 201, and vertical plates 202 are fixedly connected to the left and right sides of the top of the mounting plate 201, and the lower part between the two vertical plates 202 is fixedly connected by a connecting shaft 203, and the surface of the connecting shaft 203 is rotatably connected to the seat back 204, and a first clamping groove 205 is provided at the lower part of the left and right sides of the seat back 204, and a first threaded groove 206 is provided at a position of the vertical plate 202 close to the side of the seat back 204 and corresponding to the first clamping groove 205, and a first threaded rod 207 is movably clamped inside the first clamping groove 205, and one end of the first threaded rod 207 close to the vertical plate 202 sequentially penetrates the first clamping groove 205 and the first threaded groove 206 and extends to the outside of the first threaded groove 206 and is fixedly connected to a handle, and the first threaded rod 207 is connected to the first The threaded grooves 206 are threadedly connected, and a connecting block 208 is fixedly connected at the bottom center of the mounting plate 201. A second slot 209 is provided below the left and right sides of the connecting block 208. A movable slot 3 is provided on the rear side of the chair surface 1, and a connecting slot 4 is provided at the position corresponding to the connecting block 208 on the top of the inner wall of the movable slot 3. The bottom of the connecting block 208 passes through the connecting slot 4 and the movable slot 3 in sequence and extends to the inside of the movable slot 3. The connecting block 208 is movably engaged with the connecting slot 4, and the connecting block 208 is movably connected to the movable slot 3. A positioning mechanism 5 is provided in the movable slot 3. Chair legs 6 are movably connected to the left and right sides of the bottom of the chair surface 1, and a mounting tube 7 is movably sleeved above the surface of the chair leg 6. The top of the mounting tube 7 is fixedly connected to the bottom of the chair surface 1, and two locking baffles 8 are fixedly connected to the left and right sides of the bottom of the chair surface 1, and the locking baffles 8 are movably in contact with the chair legs 6.

[0031] Specifically, the positioning mechanism 5 includes a moving groove 501 and a rotating block 507 . Two moving grooves 501 are symmetrically provided at the bottom of the inner wall of the movable groove 3 . The left and right sides of the inner wall of the moving groove 501 are fixedly connected by a sliding rod 502 .

[0032] In a specific implementation, a moving block 503 is slidably connected to a surface of the sliding rod 502 and a side close to the connecting block 208 , and the moving block 503 is movably connected to the moving groove 501 .

[0033] Specifically, the top of the moving block 503 passes through the moving slot 501 and extends to the outside of the moving slot 501 , and the second clamping block 504 is movably clamped inside the second clamping slot 209 .

[0034] During specific implementation, the second clamping block 504 is fixedly connected to the moving block 503 .

[0035] Specifically, a bearing is fixedly installed on the upper side of the moving block 503 away from the connecting block 208, and the second threaded rod 505 is rotatably connected to the side of the bearing away from the connecting block 208. The threaded block 506 is threadedly connected to the surface of the second threaded rod 505 away from the bearing.

[0036] During specific implementation, the bottom of the threaded block 506 is fixedly connected to the bottom of the inner wall of the movable groove 3 , and the end of the second threaded rod 505 away from the bearing is fixedly connected to the rotating block 507 .

[0037] In actual application: when carrying, fold the chair legs 6, then turn the handle counterclockwise to drive the first threaded rod 207 to rotate, so that the first threaded rod 207 can be separated from the first clamping slot 205, and then fold the chair back 204, so as to facilitate carrying. When the chair back 204 needs to be disassembled, just rotate the rotating block 507 counterclockwise to drive the second threaded rod 505 to rotate, so that the second threaded rod 505 moves to the side away from the second clamping slot 209 in the threaded block 506, and then drive the moving block 503 and the second clamping block 504 to move to the side away from the second clamping slot 209, so that the second clamping block 504 is separated from the second clamping slot 209, and then pull the chair back 204 upwards to make the connecting block 208 separate from the connecting slot 4, so that the chair back 204 can be removed, and then the chair back 204 can be replaced. Through the above steps, the chair back 204 can be conveniently disassembled and replaced, which is simple to operate and saves time and effort.

[0038] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and drawings. The specific connection method of each component adopts conventional means such as mature bolts, rivets, welding, etc. in the prior art, and machinery, parts and equipment adopt conventional models in the prior art.

[0039] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle, and the electrical connection between the electrical components should be completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The utility model mainly introduces the working principle and process, and no longer explains the electrical control.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A portable chair, characterized in that: include: Seat (1); A backrest assembly (2), wherein the backrest assembly (2) is movably connected to the top rear side of the seat surface (1), and the backrest assembly (2) comprises a mounting plate (201), and vertical plates (202) are fixedly connected to the left and right sides of the top of the mounting plate (201), and the two vertical plates (202) are fixedly connected below by a connecting shaft (203), and the surface of the connecting shaft (203) is rotatably connected to the backrest (204), and the backrest (204) is provided with a first slot (205) below the left and right sides, and the vertical plate (202) is opened at a position close to one side of the backrest (204) and corresponding to the first slot (205). A first threaded groove (206) is provided, a first threaded rod (207) is movably connected inside the first clamping groove (205), one end of the first threaded rod (207) close to the vertical plate (202) passes through the first clamping groove (205) and the first threaded groove (206) in sequence and extends to the outside of the first threaded groove (206) and is fixedly connected with a handle, the first threaded rod (207) is threadedly connected to the first threaded groove (206), a connecting block (208) is fixedly connected at the bottom center of the mounting plate (201), and second clamping grooves (209) are provided below the left and right sides of the connecting block (208); A movable groove (3), the rear side of the seat surface (1) is provided with the movable groove (3), the top of the inner wall of the movable groove (3) is provided with a connecting groove (4) at a position corresponding to the connecting block (208), the bottom of the connecting block (208) sequentially passes through the connecting groove (4) and the movable groove (3) and extends to the inside of the movable groove (3), the connecting block (208) and the connecting groove (4) are movably engaged, and the connecting block (208) and the movable groove (3) are movably connected; A positioning mechanism (5), wherein the movable groove (3) is provided with a positioning mechanism (5); Chair legs (6), the bottom of the seat (1) is movably connected to the chair legs (6) on both the left and right sides, the upper surface of the chair legs (6) is movably sleeved with a mounting tube (7), the top of the mounting tube (7) is fixedly connected to the bottom of the seat (1); A locking baffle (8), wherein two locking baffles (8) are fixedly connected to the left and right sides of the bottom of the chair surface (1), and the locking baffles (8) are in movable contact with the chair legs (6).

2. A portable chair according to claim 1, characterized in that: The positioning mechanism (5) comprises a movable groove (501) and a rotating block (507). Two movable grooves (501) are symmetrically provided at the bottom of the inner wall of the movable groove (3). The left and right sides of the inner wall of the movable groove (501) are fixedly connected via a sliding rod (502).

3. A portable chair according to claim 2, characterized in that: A moving block (503) is slidably connected to the surface of the sliding rod (502) and one side close to the connecting block (208), and the moving block (503) is movably connected to the moving groove (501).

4. A portable chair according to claim 3, characterized in that: The top of the moving block (503) passes through the moving groove (501) and extends to the outside of the moving groove (501), and the second clamping block (504) is movably clamped inside the second clamping groove (209).

5. A portable chair according to claim 4, characterized in that: The second clamping block (504) is fixedly connected to the moving block (503).

6. A portable chair according to claim 5, characterized in that: A bearing is fixedly installed on the upper side of the moving block (503) away from the connecting block (208); a second threaded rod (505) is rotatably connected to the side of the bearing away from the connecting block (208); a threaded block (506) is threadedly connected to the surface of the second threaded rod (505) away from the bearing.

7. A portable chair according to claim 6, characterized in that: The bottom of the threaded block (506) is fixedly connected to the bottom of the inner wall of the movable groove (3), and the end of the second threaded rod (505) away from the bearing is fixedly connected to a rotating block (507).

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