Chair capable of being quickly disassembled and assembled

Abstract

The chair capable of being quickly disassembled and assembled comprises a seat body assembly, a supporting assembly and a backrest assembly, the seat body assembly comprises a left longitudinal beam and a right longitudinal beam; the seat body assembly further comprises a seat plate connected with the left longitudinal beam and the right longitudinal beam. A limiting groove is formed in the seat plate; the supporting assembly comprises a left supporting assembly and a right supporting assembly; the left longitudinal beam is connected with the left supporting assembly through more than two dovetail assemblies; the right longitudinal beam and the right supporting assembly are connected through more than two dovetail assemblies; the left supporting assembly and the right supporting assembly are each provided with a rear supporting leg, and a positioning pin is arranged at the top of each rear supporting leg. The backrest assembly comprises a backrest plate and connecting rods, positioning holes are formed in the bottoms of the two ends of the connecting rods, and the two ends of the connecting rods are connected with the rear supporting legs through matching of the positioning holes and positioning pins. All the components in the assembly can be connected through screws or other fasteners when leaving a factory, all the components only need to be assembled together according to the positions in the assembling process, and assembling and disassembling can be completed without using any tool.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a chair that can be quickly disassembled and assembled. Background Technology

[0002] To facilitate the movement of furniture such as chairs and sofas, the market share of disassembled furniture is increasing. Conventional disassembled furniture usually uses hand-tightening screws to connect the various parts. However, hand-tightening screws requires high precision and is time-consuming and labor-intensive.

[0003] Patent document CN208837388U discloses a quick-assembly sofa, including a base, a seat frame, and a backrest. The base includes a left baffle, a rear baffle, and a right baffle arranged vertically and connected in sequence. The left and right baffles are parallel. The rear upper part of the left and right baffles is provided with a first slope that is higher in the front and lower in the back. A pin parallel to the first slope is provided on the first slope. The front left and right sides of the backrest are provided with a left side panel and a right side panel, respectively corresponding to the positions of the left and right baffles. The lower end surface of the left and right side panels is a second slope that is higher in the front and lower in the back. The second slope is provided with a slot adapted to the pin. The pin can be fully inserted into the slot, so that the backrest is connected to the base. The seat frame has a cushion at the top. The inner walls of the left, rear, and right baffles are equipped with multiple "L"-shaped hooks. The seat frame is located around the "L"-shaped hooks. Each "L"-shaped hook consists of a horizontal plate and a vertical plate. There is a gap between the vertical plate and the inner wall of the base. The vertical plate has a limiting hole that passes through it. The limiting hole has a ball and a screw. The screw is threaded into the limiting hole. The ball slides in the limiting hole. A pressure spring is provided between the screw and the ball. The opening diameter of the limiting hole near the ball is smaller than the diameter of the ball. When the seat frame is placed between the inner wall of the base and the vertical plate, the ball applies pressure to the seat frame towards the inner wall of the base, thus fixing the seat frame to the base.

[0004] However, it only disassembles the backrest and seat frame, and the base is not completely disassembled. The base is still not convenient to transport due to its size. In addition, the connection between the base and the seat is through an "L"-shaped hook. The "L"-shaped hook contains components such as ball bearings and springs, which makes the structure relatively complex and the assembly process more troublesome. Summary of the Invention

[0005] The problem this invention aims to solve is the technical issue of current chair assembly and disassembly structures being complex and chairs not being completely disassembled.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a chair that can be quickly disassembled and assembled, comprising a seat assembly, a support assembly, and a backrest assembly that are detachably connected; the seat assembly includes a left longitudinal beam and a right longitudinal beam extending from the front side to the rear side of the chair; the seat assembly also includes one or more seat plates connecting the left and right longitudinal beams; a limiting groove is provided on the seat plate for limiting the lower end of the backrest assembly; the support assembly includes a left support assembly connected to the left longitudinal beam and a right support assembly connected to the right longitudinal beam; the left longitudinal beam and the left support assembly are connected by two or more dovetail components; the right longitudinal beam and the right support assembly are connected by two or more dovetail components; both the left and right support assemblies have rear support legs, and the backrest assembly includes one or more backrest panels, the backrest panels and the rear support legs being detachably connected by fastening components.

[0007] This design divides the chair into a seat assembly, a support assembly, and a backrest assembly. The seat assembly and support assembly are detachably connected via multiple dovetail components. The backrest assembly can be easily fixed to the seat assembly through the cooperation of limiting grooves and fastening components. Each component occupies a small space individually, facilitating transportation and handling. Each part of the three components is connected at the factory using screws or other fasteners. After receiving the chair, the user only needs to assemble the components in their positions, completing assembly and disassembly without the use of any tools. Furthermore, the chair can be combined with seat cushions and back cushions to form a sofa, which the user can adjust according to their usage scenarios. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0009] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0010] Figure 3 This is an exploded structural diagram from the rear view of an embodiment of the present invention;

[0011] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0012] Figure 5 This is an exploded structural diagram from the bottom view of an embodiment of the present invention;

[0013] Figure 6 This is a schematic diagram showing the placement of a seat cushion and a back cushion in an embodiment of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1 to 6 As shown, a chair that can be quickly assembled and disassembled includes a seat assembly 1, a support assembly 2, and a backrest assembly 3 that are detachably connected. The seat assembly 1 includes a left longitudinal beam 11 and a right longitudinal beam 12 extending from the front side of the chair to the rear side. A front crossbeam 14 is connected to the front of the left longitudinal beam 11 and the right longitudinal beam 12, and a rear crossbeam 15 is connected to the rear of the left longitudinal beam 11 and the right longitudinal beam 12. A limiting beam 16 is connected between the front crossbeam 14 and the rear crossbeam 15. In this embodiment, a connecting hole 17 is provided in the middle of the inner side of the front crossbeam 14 and the rear crossbeam 15. The two ends of the limiting beam 16 have connecting parts 18, which can be inserted into the connecting holes 17, so that the limiting beam 16 is fixed in the middle between the front crossbeam 14 and the rear crossbeam 15.

[0016] The seat assembly 1 also includes one or more seat plates 13 connecting the left longitudinal beam 11 and the right longitudinal beam 12. In this embodiment, four seat plates 13 are connected side by side above the left longitudinal beam 11 and the right longitudinal beam 12. A limiting groove 131 for limiting the lower end of the backrest assembly 3 is provided on the third seat plate 13 arranged from the front to the back of the chair. The limiting groove 131 is a through groove and is opened laterally on the seat plate 13. The limiting beam 16 is partially located below the limiting groove 131. After the lower end of the backrest assembly 3 passes through the limiting groove 131, it partially abuts against the limiting beam 16, and the limiting beam 16 limits the backrest assembly 3 again.

[0017] like Figures 2 to 3 As shown, in this embodiment, the support assembly 2 includes a left support assembly 21 connected to the left longitudinal beam 11 and a right support assembly 22 connected to the right longitudinal beam 12; the left longitudinal beam 11 and the left support assembly 21 are connected by three dovetail assemblies 4; the right longitudinal beam 12 and the right support assembly 22 are connected by three dovetail assemblies 4; wherein, the dovetail assembly 4 includes a dovetail groove 41 and a dovetail block 42, and three connecting grooves 19 are provided on the outward side of the left longitudinal beam 11 and the right longitudinal beam 12, and the dovetail groove 41 is fixed in the connecting groove 19 of the left longitudinal beam 11 and the right longitudinal beam 12. Within component 9, the dovetail block 42 is disposed on the support component 2. By inserting the dovetail block 42 into the dovetail groove 41, the left support component 21 is connected to the left longitudinal beam 11, and the right support component 22 is connected to the right longitudinal beam 12. In another embodiment, the dovetail block 42 is disposed on the left longitudinal beam 11 and the right longitudinal beam 12 of the base component 1, and the dovetail groove 41 is disposed on the support component 2. Similarly, by inserting the dovetail block 42 into the dovetail groove 41, the left support component 21 is connected to the left longitudinal beam 11, and the right support component 22 is connected to the right longitudinal beam 12.

[0018] The dovetail assembly 4 allows for easy assembly of the chair by simply aligning the dovetail block 42 with the dovetail groove 41 and inserting it. This installation method requires no complicated tools and can be easily completed. Similarly, when the chair needs to be disassembled for repair or storage, the dovetail block 42 can be pulled out of the dovetail groove 41, which is convenient and quick. This makes the assembly and disassembly of the chair more efficient, whether it is mass production assembly on a production line or user self-assembly and disassembly in a home environment.

[0019] Both the left support assembly 21 and the right support assembly 22 have a front support leg 24 and a rear support leg 23. The backrest assembly 3 includes one or more backrest panels 31. The upper part of the backrest panel 31 and the top of the rear support leg 23 are detachably connected by a fastening assembly.

[0020] A connecting beam 25 is connected between the front support leg 24 and the rear support leg 23. A dovetail block 42 is set on the connecting beam 25. When the dovetail block 42 is connected to the dovetail groove 41 of the seat assembly, the connecting beam 25 can better transmit the pressure from the seat assembly 1 to the support leg.

[0021] like Figures 4 to 5 As shown, in this embodiment, a fixed connecting rod 26 is also provided between the front support leg 24 and the rear support leg 23. The upward-facing side of the fixed connecting rod 26 is flush with the upper end surfaces of the front support leg 24 and the rear support leg 23. A handrail 27 is connected to the upward-facing side of the fixed connecting rod 26, and the handrail 27 is fixed above the front support leg 24 and the rear support leg 23 by the fixed connecting rod 26. Fixing the handrail 27 above the front support leg 24 and the rear support leg 23 by the fixed connecting rod 26 provides a more stable support structure for the handrail 27. The structure consists of a fixed connecting rod 26 that connects the front support leg 24 and the rear support leg 23, forming a stable plane to support the armrest 27. When the user places their arm on the armrest 27, the pressure on the armrest 27 can be evenly distributed to the front support leg 24 and the rear support leg 23 through the fixed connecting rod 26. Since a positioning pin 231 is provided at the top of the rear support leg 23, and an avoidance notch 271 is provided at the end of the armrest 27 above the rear support leg 23, the positioning pin 231 at the top of the rear support leg 23 is exposed.

[0022] like Figure 2As shown, in this embodiment, the backrest panel 31 includes a left backrest panel 311 and a right backrest panel 312. Limiting notches 313 are provided on both sides of the lower end of the left backrest panel 311 and the right backrest panel 312. After the lower end of the backrest panel 31 is inserted into the limiting groove 131 on the seat plate 13, the limiting notches 313 on both sides of the lower end of the left backrest panel 311 abut against the left longitudinal beam 11 and the limiting beam 16, respectively, and the limiting notches 313 on both sides of the lower end of the right backrest panel 312 abut against the right longitudinal beam 12, respectively. The backrest panel 31 is inserted into the longitudinal beam and the limiting beam 16 through the contact between the limiting notch 313 and the longitudinal beam and the limiting beam 16, thereby limiting the insertion depth of the lower end of the backrest panel 31. The pressure generated by the user leaning against the backrest can be effectively distributed to the longitudinal beam and the limiting beam 16 of the seat assembly 1. This can avoid the pressure being concentrated on a certain point or component, reducing the risk of component damage due to long-term pressure. At the same time, this design makes it easy to find the correct position of the backrest panel 31 during installation.

[0023] like Figure 4 As shown, in this embodiment, a connecting rod 32 is provided on the back of the backrest panel 31. Positioning holes 321, which can mate with the positioning pins 231, are provided at the bottom of both ends of the connecting rod 32. Both ends of the connecting rod 32 are connected to the rear support leg 23 through the engagement of the positioning holes 321 and the positioning pins 231. During assembly, both ends of the connecting rod 32 abut against the clearance notch 271, and the positioning pins 231 are inserted into the positioning holes 321 at the bottom of both ends of the connecting rod 32. This design facilitates the installation of the connecting rod 32. The existence of the clearance notch 271 allows the connecting rod 32 to align smoothly with the positioning pins 231, making it easier for installers to insert the positioning pins 231 into the positioning holes 321 at both ends of the connecting rod 32. This design simplifies the installation process, improves assembly efficiency, and reduces potential component interference problems during installation.

[0024] like Figure 5 As shown, in this embodiment, two gripping through holes 132 are also provided on the seat plate 13. During disassembly, both hands can partially pass through the gripping through holes 132 to grasp the seat plate 13. When disassembling the chair, both hands partially pass through the gripping through holes 132 to grasp the seat plate 13, providing a stable point of force for the disassembly operation. Especially when it is necessary to separate the seat plate 13 from the longitudinal beam or other connecting parts, the gripping through holes 132 can better control the direction and force of the movement of the seat plate 13.

[0025] In this embodiment, a fastening connecting plate 28 is also connected between the front support leg 24 and the rear support leg 23. The bottom of both ends of the fastening connecting plate 28 has a first fixing through hole 281 in the direction of the front support leg 24 and the rear support leg 23. The fastening connecting plate 28 is fixed between the front support leg 24 and the rear support leg 23 by fasteners passing through the first fixing through hole 281. Since the first fixing through hole 281 is opened from the bottom of the fastening connecting plate 28 in the direction of the support leg, the fasteners are hidden on the bottom surface of the fastening connecting plate 28 when fixed, making the overall seat more aesthetically pleasing. The connection between the connecting rod 32 and the backrest 31 also uses this structure. A second fixing through hole 322 is opened from the bottom of the connecting rod 32 in the direction of the backrest 31. The fasteners are hidden on the bottom surface of the connecting rod 32, maintaining the overall aesthetic appearance of the seat.

[0026] like Figure 6 As shown, in this embodiment, a seat cushion 6 and a back cushion 5 can be placed on the seat plate 13 and the backrest plate 31 respectively, so that this embodiment can be used as a sofa and the user can change it according to the usage scenario.

[0027] The above overall design connects the support component 2 and the base component 1 through the dovetail component 4. While ensuring the stability of the connection, the connection also allows for quick disassembly and assembly of the support component 2 and the base component 1. Installation and disassembly can be completed without tools, which is quick and convenient.

Claims

1. A chair that can be quickly disassembled, characterized by: The seat body assembly (1), the support assembly (2) and the backrest assembly (3) are detachably connected; The seat body assembly (1) comprises left and right longitudinal beams (11, 12) extending from the front side to the back side of the chair; the seat body assembly (1) further comprises one or more seat plates (13) connecting the left and right longitudinal beams (11, 12); the seat plate (13) is provided with a limiting groove (131) for limiting the lower end of the backrest assembly (3); The support assembly (2) comprises a left support assembly (21) connected to the left longitudinal beam (11) and a right support assembly (22) connected to the right longitudinal beam (12); the left longitudinal beam (11) and the left support assembly (21) are connected by two or more dovetail assemblies (4); the right longitudinal beam (12) and the right support assembly (22) are connected by two or more dovetail assemblies (4); The left and right support assemblies (21, 22) each have a rear support leg (23); the backrest assembly (3) comprises one or more backrest plates (31) which are detachably connected to the rear support leg (23) by a buckling assembly.

2. The quick detachable chair according to claim 1, wherein: The buckling assembly comprises a positioning pin (231) provided on the top of the rear support leg (23); The backrest plate (31) is provided with a connecting rod (32) on the back side; the connecting rod (32) is provided with a positioning hole (321) at the bottom of both ends, which can cooperate with the positioning pin (231); the connecting rod (32) is detachably connected to the rear support leg (23) through the cooperation of the positioning hole (321) and the positioning pin (231).

3. The quick detachable chair according to claim 2, wherein: The dovetail assembly (4) comprises a dovetail groove (41) and a dovetail block (42); the dovetail groove (41) is arranged on the left and right longitudinal beams (11, 12) of the seat body assembly (1), and the dovetail block (42) is arranged on the support assembly (2); The support assembly (2) further comprises a front support leg (24), and the front support leg (24) and the rear support leg (23) are connected by a connecting beam (25); the dovetail block (42) is arranged on the connecting beam (25).

4. The quick detachable chair according to claim 1, wherein: The front ends of the left and right longitudinal beams (11, 12) are connected to a front cross beam (14), and the rear ends of the left and right longitudinal beams (11, 12) are connected to a rear cross beam (15); the front cross beam (14) and the rear cross beam (15) are connected by a limiting beam (16); the front cross beam (14) and the rear cross beam (15) are each provided with a connecting hole (17); the limiting beam (16) has a connecting portion (18) at both ends, which can be inserted into the connecting hole (17) to fix the limiting beam (16) between the front cross beam (14) and the rear cross beam (15).

5. The quick detachable chair according to claim 4, wherein: The limiting groove (131) is a through groove and is horizontally arranged on the seat plate (13); the limiting beam (16) is partially located below the limiting groove (131).

6. The quick detachable chair according to claim 5, wherein: The backrest plate (31) comprises a left backrest plate (311) and a right backrest plate (312), and limit notches (313) are arranged on both sides of the lower ends of the left backrest plate (311) and the right backrest plate (312); after the lower end of the backrest plate (31) is inserted into the limit slot (131) on the seat plate (13), the limit notches (313) on both sides of the lower end of the left backrest plate (311) abut against the left longitudinal beam (11) and the limit beam (16) respectively, and the limit notches (313) on both sides of the lower end of the right backrest plate (312) abut against the right longitudinal beam (12) and the limit beam (16) respectively.

7. The quick detachable chair according to claim 1, wherein: Two holding through holes (132) are arranged on the seat plate (13), and when disassembling, hands can partially pass through the holding through holes (132) to hold the seat plate (13).

8. The quick detachable chair according to claim 1, wherein: At least two connection slots (19) are arranged on the outer side of the left longitudinal beam (11) and the right longitudinal beam (12), and the dovetail groove piece (41) is fixed in the connection slot (19).

9. The quick detachable chair according to claim 3, wherein: A fixed connecting rod (26) is further arranged between the front supporting leg (24) and the rear supporting leg (23), the upward side of the fixed connecting rod (26) is flush with the upper end surface of the front supporting leg (24) and the rear supporting leg (23); a handrail (27) is connected to the upward side of the fixed connecting rod (26), and the handrail (27) is fixed above the front supporting leg (24) and the rear supporting leg (23) through the fixed connecting rod (26).

10. The quick detachable chair according to claim 9, wherein: An avoiding notch (271) is arranged at the end of the handrail (27) above the rear supporting leg (23), so that the positioning pin (231) on the top of the rear supporting leg (23) is exposed; during assembly, the two ends of the connecting rod (32) abut against the avoiding notches (271) respectively, and the positioning pin (231) is inserted into the positioning hole (321) below the two ends of the connecting rod (32).

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