Quickly assembled and disassembled chair

Abstract

The utility model provides a chair capable of being quickly assembled and disassembled, which comprises two supporting leg assemblies, a chair body and a chair body, each supporting leg assembly comprises a side frame and a supporting leg arranged at the bottom of the side frame, the rear side of each side frame is provided with a positioning part and a first through hole, and the front side of each side frame is provided with a second through hole; gourd-shaped holes matched with the positioning parts are formed in the two sides of the back frame respectively, and each gourd-shaped hole is provided with a large hole and a small hole which are communicated with each other; two first fixing pins matched with the first through holes are arranged at the bottom of the back frame, and meanwhile a third through hole is further formed in the bottom of the back frame. Two second fixing pins matched with the second through holes are arranged on the front side of the seat plate, and third fixing pins matched with the third through holes are arranged on the rear side of the seat plate; according to the utility model, through a simple assembly structure and convenient assembly steps without any tool assistance, the storage size and the assembly convenience are considered at the same time, and the problem that the storage size and the assembly convenience of the fixed chair cannot be considered at the same time in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a chair which can be assembled and disassembled quickly. Background Art

[0002] As people's living standards continue to improve, in pursuit of a higher quality of life, people have higher and higher demands for chair functions. For example, due to the requirement for transportation convenience, more and more people tend to choose chairs that are easy to assemble. At the same time, because chairs that are easy to assemble require less packaging space and are more convenient for logistics, they are very suitable for self-assembly after online shopping.

[0003] In order to save logistics costs as much as possible, the conveniently assembled chairs in the prior art are often disassembled into as many parts as possible, and then assembled and fixed by connecting structures such as screws. When the chair with this structure is unfolded, due to its large number of parts and unclear assembly positions, the user is generally required to carefully study the instructions and use tools to complete the assembly, which will undoubtedly reduce the user's experience. Therefore, there is a need for a quick-assemble and disassemble chair that takes up as little space as possible for storage and packaging and can be assembled without tools. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a chair that can be assembled and disassembled quickly, so as to solve the problem that the fixed chair in the prior art cannot take into account the storage logistics size and is easy to assemble at the same time.

[0005] In order to solve the above technical problems, the utility model provides a chair that can be quickly assembled and disassembled, comprising:

[0006] Two leg assemblies, the leg assemblies comprising a side frame and a leg arranged at the bottom of the side frame, a positioning portion and a first through hole being arranged at the rear side of the side frame, and a second through hole being arranged at the front side of the side frame;

[0007] A back frame, wherein gourd holes adapted to the positioning portion are respectively arranged on both sides of the back frame, the gourd hole comprises a large hole and a small hole which are interconnected, the size of the large hole is larger than the size of the positioning portion, and the size of the small hole is smaller than the size of the positioning portion; two first fixing pins adapted to the first through holes are arranged at the bottom of the back frame, and a third through hole is also opened at the bottom of the back frame;

[0008] A seat plate, wherein two second fixing pins adapted to the second through holes are provided on the front side of the seat plate, and a third fixing pin adapted to the third through hole is provided on the rear side of the seat plate;

[0009] During assembly, the two leg assemblies are placed on both sides of the back frame and the positioning part is set in the large hole of the gourd hole. At the same time, the first fixing pin at the bottom of the back frame is aligned with the first through hole. Then, the back frame is pushed downward with force, the positioning part slides into the small hole of the gourd hole and the first fixing pin is inserted into the first through hole, and the back frame is fixed to the rear side of the leg assembly; then, the third fixing pin is inserted into the third through hole and the second fixing pin is aligned with the second through hole. The front side of the seat plate is pressed to make the second fixing pin fit into the second through hole to complete the installation of the seat plate. At this time, the quick-assembly and disassembly chair is in the unfolded state.

[0010] As a more preferred embodiment, the quick-assembly and disassembly chair further comprises two support members, the two support members are symmetrically fixed on the rear sides of the leg assemblies, the first through holes are formed on the support members, and when the first fixing pin is inserted into the first through holes, the two support members abut against the bottom of the back frame and provide support for the back frame; on the one hand, the support members provide support for the back frame, and at the same time, the first through holes provided thereon also meet the requirements for positioning and assembling the back frame.

[0011] As a more preferred embodiment, an armrest is provided on the upper portion of the side frame.

[0012] As a more preferred embodiment, the quick-assembly and disassembly chair further comprises two support tubes, the two support tubes are symmetrically fixed on the front sides of the leg assemblies, the second through holes are formed on the support tubes, and when the second fixing pins are inserted into the second through holes, the two support tubes abut against the bottom of the seat plate and provide support for the seat plate; on the one hand, the support tubes provide support for the seat plate, and at the same time, the second through holes provided thereon also meet the requirements for positioning and assembling the seat plate.

[0013] As a more preferred manner, the support member is at the same level as the support tube. When the seat plate is installed, the rear and front sides of the seat plate can remain level. Keeping the seat plate level can meet the normal usage needs of the user.

[0014] As a more preferred method, two third through holes are opened at the bottom of the back frame, and a third fixing pin compatible with the two third through holes is opened on the rear side of the seat plate. The back frame and the seat plate are fixed to each other by the two third fixing pins and the third through holes, thereby improving the stability of the structure.

[0015] As a more preferred embodiment, the quick-assembly and disassembly chair also includes a plate buckle assembly, which includes a locking hook and a locking buckle matched with the locking hook, the locking hook is arranged at the bottom of the rear side of the side frame, and the locking buckle is correspondingly arranged at the bottom of the rear side of the seat plate, and after pressing the front side of the seat plate to make the second fixing pin engage in the second through hole and complete the installation of the seat plate, the locking buckle is pulled to engage with the locking hook to further lock the seat plate; the plate buckle assembly can further lock the seat plate and the leg assembly, thereby improving the compactness of the finishing structure after assembly, reducing the gap between the seat plate and the leg assembly, eliminating abnormal noise caused by collision of parts and wear of various components, and improving the service life and product texture.

[0016] As a more preferred embodiment, the lock includes a base, a turning handle and a buckle, the base is fixed to the seat plate, one end of the turning handle is rotatably set on the base, one end of the buckle is hinged on the turning handle, the turning handle is rotated in the direction of the lock, so that the other end of the buckle is inserted into the lock, and then the turning handle is rotated in the opposite direction, which drives one end of the buckle to move away from the lock, thereby tightening the lock, thereby locking the seat plate and the side frame of the leg assembly.

[0017] As a more preferred embodiment, the leg assembly includes two legs, and the two legs are respectively fixed to the front and rear bottoms of the side frame, so that the four legs of the quick-assembled and disassembled chair frame structure can ensure its stability during use.

[0018] As a more preferred embodiment, the side frame includes an armrest frame and a reinforcement structure arranged in the armrest frame. The armrest frame meets the needs of users to place their arms when in use, and the reinforcement structure further improves the bearing capacity of the armrest frame.

[0019] As a more preferred embodiment, the quick-assembly and disassembly chair further comprises a flexible cushion, and the flexible cushion is arranged on the back frame and / or the seat plate to further enhance the sitting experience.

[0020] As described above, the quick-assembly and disassembly chair of the present invention has the following beneficial effects: when assembling the quick-assembly and disassembly chair of the present invention, the two leg assemblies are placed on both sides of the back frame and the positioning part is set in the large hole of the gourd hole. At the same time, the first fixing pin at the bottom of the back frame is aligned with the first through hole, and then the back frame is pushed downward with force, the positioning part slides into the small hole of the gourd hole and the first fixing pin is inserted into the first through hole, so that the back frame is fixed to the rear side of the leg assembly; then the third fixing pin is inserted into the third through hole and the second fixing pin is aligned with the second through hole, the front side of the seat plate is pressed so that the second fixing pin is stuck in the second through hole to complete the installation of the seat plate, and the quick-assembly and disassembly chair is in the unfolded state at this time; the assembly of the quick-assembly and disassembly chair of the present invention can be completed through the above simple steps, and there is no need to use fasteners such as screws during the assembly process, and there is no need to use any other tools to assist in assembly, which greatly improves the assembly experience; further, the present invention It is also very convenient to disassemble the new quick-assembly and disassembly chair from an assembled state to a state suitable for storage logistics. It is only necessary to reverse the above-mentioned assembly steps, such as first pushing the front side of the seat plate upward to make the second fixing pin disengage from the second through hole, and then pulling the seat plate to make the third fixing pin disengage from the third through hole, thus completing the disassembly of the seat plate; then pulling the back frame upward so that the positioning part slides from the small hole of the gourd hole into the large hole while the first fixing pin disengages from the first through hole, and then pulling the leg assembly from both sides so that the positioning part disengages from the large hole, thereby achieving the separation of the back frame and the leg assembly, and then completing the disassembly; it should also be noted that the above-mentioned complete assembly and disassembly process does not cause any irreversible damage to the main body of the quick-assembly and disassembly chair of the utility model, so the above-mentioned assembly and disassembly process can be repeated many times, while the chair of the prior art assembled by screws after the large hole is likely to cause structural looseness if assembled and disassembled again, or even cannot be assembled again.

[0021] In summary, the quick-assembled and disassembled chair of the present invention takes into account both the storage size and the ease of assembly through a simple assembly structure and convenient assembly steps that do not require any tools, thereby solving the problem in the prior art that fixed chairs cannot take into account both the storage size and the ease of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic diagram of a quick-assembled and disassembled chair of the present invention;

[0023] Figure 2 Display as Figure 1 A partial enlarged view of the middle area A;

[0024] Figure 3 The schematic diagram shows the plate buckle assembly of the quick-assembled and disassembled chair of the present invention when it is not locked;

[0025] Figure 4 A schematic diagram showing the buckle assembly of the quick-assembled and disassembled chair of the present invention when the handle is rotated;

[0026] Figure 5 Shown is a schematic diagram of the fastening assembly of the quick-assembled and disassembled chair of the present invention when it is locked.

[0027] Component number description

[0028] 1 Leg assembly

[0029] 11 Side frame

[0030] 111 Handrail frame

[0031] 111a Handrail bottom bar

[0032] 111b Handrail top rod

[0033] 111c Handrail front bar

[0034] 111d Armrest rear bar

[0035] 112 Strengthening structure

[0036] 12 Legs

[0037] 13 Positioning unit

[0038] 131 convex head

[0039] 132 Connection

[0040] 14 Support

[0041] 141 First through hole

[0042] 15 Support tube

[0043] 151 Second through hole

[0044] 2 Backrest

[0045] 21 Backrest bottom bar

[0046] 211 Third through hole

[0047] 212 First fixing pin

[0048] 22 Back frame top bar

[0049] 23 Back frame transition rod

[0050] 24 Carrier side bars

[0051] 241 Gourd Hole

[0052] 241a Large hole

[0053] 241b Small hole

[0054] 3 Seat Plate

[0055] 31 Seat front bar

[0056] 32 Seat rear rod

[0057] 321 Third fixing pin

[0058] 33 Seat side bar

[0059] 331 Second fixing pin

[0060] 4 Plate buckle assembly

[0061] 41 Hook

[0062] 42 Lock

[0063] 421 Base

[0064] 422 Turning handle

[0065] 423 Buckle

[0066] 5 Flexible cushion DETAILED DESCRIPTION

[0067] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0068] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" 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 or an electrical connection; it can be a direct connection, or an indirect connection 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.

[0070] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0071] like Figures 1 to 5 As shown, the utility model provides a quick-assembled and disassembled chair, comprising:

[0072] Two leg assemblies 1, the leg assemblies 1 comprising a side frame 11 and a leg 12 arranged at the bottom of the side frame 11, a positioning portion 13 and a first through hole 141 are arranged at the rear side of the side frame 11, and a second through hole 151 is opened at the front side of the side frame 11;

[0073] Back frame 2, gourd holes 241 adapted to the positioning portion 13 are respectively arranged on both sides of the back frame 2, the gourd hole 241 has a large hole 241a and a small hole 241b that are interconnected, the large hole 241a is larger than the positioning portion 13, and the small hole 241b is smaller than the positioning portion 13; two first fixing pins 212 adapted to the first through holes 141 are arranged at the bottom of the back frame 2, and a third through hole 211 is also opened at the bottom of the back frame 2;

[0074] A seat plate 3, wherein two second fixing pins 331 adapted to the second through holes 151 are provided on the front side of the seat plate 3, and a third fixing pin 321 adapted to the third through hole 211 is provided on the rear side of the seat plate 3;

[0075] During assembly, the two leg assemblies 1 are placed on both sides of the back frame 2 and the positioning portion 13 is set in the large hole 241a of the gourd hole 241. At the same time, the first fixing pin 212 at the bottom of the back frame 2 is aligned with the first through hole 141. Then, the back frame 2 is pushed downward with force, and the positioning portion 13 slides into the small hole 241b of the gourd hole 241. At the same time, the first fixing pin 212 is inserted into the first through hole 141 to fix the back frame 2 to the rear side of the leg assembly 1; then, the third fixing pin 321 is inserted into the third through hole 211 and the second fixing pin 331 is aligned with the second through hole 151. The front side of the seat plate 3 is pressed so that the second fixing pin 331 is inserted into the second through hole 151 to complete the installation of the seat plate 3. At this time, the quick-assembly and disassembly chair is in an unfolded state.

[0076] In order to better introduce the utility model, the following specific applications are now used for explanation: When assembling the quick-assembly and disassembly chair of the utility model, the two leg assemblies 1 are placed on both sides of the back frame 2 and the positioning part 13 is set in the large hole 241a of the gourd hole 241. At the same time, the first fixing pin 212 at the bottom of the back frame 2 is aligned with the first through hole 141. Then, the back frame 2 is pushed downward with force, and the positioning part 13 slides into the small hole 241b of the gourd hole 241. At the same time, the first fixing pin 212 is inserted into the first through hole 141, and the back frame 2 is fixed to the legs. The rear side of the component 1; then, the third fixing pin 321 is inserted into the third through hole 211, and the second fixing pin 331 is aligned with the second through hole 151, and the front side of the seat plate 3 is pressed to make the second fixing pin 331 snap into the second through hole 151 to complete the installation of the seat plate 3. At this time, the quick-assembled and disassembled chair is in the unfolded state; the assembly of the quick-assembled and disassembled chair of the utility model can be completed through the above simple steps, and there is no need to use fasteners such as screws during the assembly process, and there is no need to use any other tools to assist in the assembly, which greatly improves the assembly experience; further The quick-assembly and disassembly chair of the present invention is also very convenient to disassemble from the assembled state to the state suitable for storage logistics. It only needs to reverse the above-mentioned assembly steps, such as first pushing the front side of the seat plate 3 upward to make the second fixing pin 331 disengage from the second through hole 151, and then pulling the seat plate 3 to make the third fixing pin 321 disengage from the third through hole 211, thus completing the disassembly of the seat plate 3; then pulling the back frame 2 upward so that the positioning portion 13 slides from the small hole 241b of the gourd hole 241 into the large hole 241a, and at the same time the first fixing pin 331 is pulled out of the second through hole 151. The fixing pin 212 is disengaged from the first through hole 141, and then the leg assembly 1 is pulled from both sides to make the positioning portion 13 disengage from the large hole 241a, thereby realizing the separation of the back frame 2 and the leg assembly 1, and then completing the disassembly; it should also be noted that the above-mentioned complete assembly and disassembly process does not cause any irreversible damage to the main body of the quick-assembly and disassembly chair of the utility model, so the above-mentioned assembly and disassembly process can be repeated many times, while the chair of the prior art that is assembled by screws after the large hole 241a is likely to cause structural looseness after assembly and disassembly, and may even be unable to be assembled again.

[0077] In this embodiment, if Figure 1 as well as Figure 2As shown, the back frame 2 is a rectangular frame structure, which is surrounded by a back frame bottom rod 21, a back frame top rod 22, two back frame transition rods 23 and a back frame side rod 24. The two ends of the back frame bottom rod 21 are respectively connected to one end of the two back frame side rods 24; the other ends of the two back frame side rods 24 are respectively connected to the corresponding ends of the two back frame transition rods 23, and the other ends of the two back frame transition rods 23 are respectively connected to the two ends of the back frame top rod 22. The first fixing pin 212 is set on the back frame At the bottom of the frame bottom rod 21, the third through hole 211 is opened on the back frame bottom rod 21, the gourd hole 241 is symmetrically arranged on the two back frame side rods 24, and the back frame transition rod 23 is used to make the transition between the back frame top rod 22 and the back frame side rod 24 more rounded, more beautiful in appearance and safer; further, in this embodiment, the back frame 2 also includes a mesh plate, which is filled in the rectangular frame structure of the back frame 2 to provide support while reducing weight and facilitating ventilation.

[0078] Furthermore, in this embodiment, if Figure 1 as well as Figure 2 As shown, the seat plate 3 is also a rectangular frame structure, which is surrounded by a seat plate front rod 31, a seat plate rear rod 32 and two seat plate side rods 33. The two second fixing pins 331 are vertically arranged at the bottom of the front side of the two seat plate side rods 33, and the third fixing pin 321 is rearwardly arranged on the seat plate rear rod 32; further, in this embodiment, the seat plate 3 also includes a mesh plate, which is filled in the rectangular frame structure of the seat plate 3 to provide support while reducing weight and facilitating ventilation.

[0079] Furthermore, in this embodiment, if Figure 1 as well as Figure 2 As shown, the side frame 11 includes an armrest frame 111 and a reinforcement structure 112 arranged in the armrest frame 111, the armrest frame 111 meets the user's need to place the arm when in use, and the reinforcement structure 112 further improves the bearing capacity of the armrest frame 111; further, in this embodiment, the armrest frame 111 is surrounded by an armrest bottom rod 111a, an armrest top rod 111b, an armrest front rod 111c, and an armrest rear rod 111d, the positioning portion 13 is arranged at the upper part of the armrest rear rod 111d, the first through hole 141 is arranged at the lower part of the armrest rear rod 111d, and the second through hole 151 is arranged at the lower part of the armrest front rod 111c; at the same time, an armrest portion is also provided on the upper part of the side frame 11.

[0080] Furthermore, in this embodiment, if Figure 1As shown, the leg assembly 1 includes two legs 12, and the two legs 12 are respectively fixed to the bottom of the front armrest rod 111c and the rear armrest rod 111d, so that the four legs 12 of the quick-assembled and disassembled chair frame structure can ensure its stability during use.

[0081] Furthermore, in this embodiment, if Figure 2 As shown, the positioning portion 13 includes a connecting portion 132 and a convex portion 131 integrally formed with one end of the connecting portion 132, the outer contour of the convex portion 131 is a cylinder, and its diameter is larger than that of the connecting portion 132, and is adapted to the large hole 241a of the gourd hole 241, and the large hole 241a is arranged below the small hole 241b, when the convex portion 131 extends into the large hole 241a through the large hole 241a and slides into the small hole 241b, the side wall of the small hole 241b limits the convex portion 131, so that the leg assembly 1 and the back frame 2 are locked with each other.

[0082] In this embodiment, if Figure 1 as well as Figure 2 As shown, the quick-assembled and disassembled chair also includes two support members 14, and the two support members 14 are symmetrically fixed to the rear side of the leg assembly 1, and the first through hole 141 is opened on the support member 14. When the first fixing pin 212 is inserted into the first through hole 141, the two support members 14 abut against the bottom of the back frame 2 and provide support for the back frame 2; on the one hand, the support member 14 provides support for the back frame 2, and at the same time, the first through hole 141 arranged thereon also meets the positioning and assembly requirements of the back frame 2.

[0083] In this embodiment, if Figure 1 as well as Figure 2 As shown, the quick-assembly and disassembly chair also includes two support tubes 15, and the two support tubes 15 are symmetrically fixed on the front side of the leg assembly 1, and the second through hole 151 is opened on the support tube 15. When the second fixing pin 331 is inserted into the second through hole 151, the two support tubes 15 abut against the bottom of the seat plate 3 and provide support for the seat plate 3; on the one hand, the support tube 15 provides support for the seat plate 3, and at the same time, the second through hole 151 arranged thereon also meets the positioning and assembly requirements of the seat plate 3.

[0084] In this embodiment, if Figure 1 as well as Figure 2As shown, the horizontal heights of the support member 14 and the support tube 15 are consistent. When the seat plate 3 is installed, the rear side and the front side of the seat plate 3 can be kept horizontal. Keeping the seat plate 3 horizontal can meet the normal usage needs of the user. Similarly, the horizontal heights of the support member 14 and the support tube 15 can be set inconsistently, so that the seat plate 3 can maintain a certain tilt angle to meet the needs of different groups of people.

[0085] In this embodiment, if Figure 1 as well as Figure 2 As shown, two third through holes 211 are provided at the bottom of the back frame 2, and a third fixing pin 321 adapted to the two third through holes 211 is provided on the rear side of the seat plate 3. The back frame 2 and the seat plate 3 are fixed to each other by the two third fixing pins 321 and the third through holes 211, thereby improving the stability of the structure.

[0086] In this embodiment, if Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the quick-assembled and disassembled chair further includes a plate buckle assembly 4, the plate buckle assembly 4 includes a lock hook 41 and a lock buckle 42 adapted to the lock hook 41, the lock hook 41 is arranged at the bottom of the rear side of the side frame 11, and the lock buckle 42 is correspondingly arranged at the bottom of the rear side of the seat plate 3, as shown in FIG. Figure 3 As shown, after pressing the front side of the seat plate 3 to make the second fixing pin 331 snap into the second through hole 151 and completing the installation of the seat plate 3, pull the lock buckle 42 and make it snap into the lock hook 41 to further lock the seat plate 3, as shown in FIG. Figure 5 As shown; the plate buckle assembly 4 can further lock the seat plate 3 and the leg assembly 1, thereby improving the compactness of the finishing structure after assembly, reducing the gap between the seat plate 3 and the leg assembly 1, eliminating abnormal noise caused by the collision of parts and the wear of various components, and improving the service life and product texture; further, in this embodiment, the quick-assembly and disassembly chair includes two plate buckle assemblies 4, and the two locking hooks 41 of the two plate buckle assemblies 4 are respectively arranged at the bottom of the rear side of the two side frames 11, and the two locks 42 of the two plate buckle assemblies 4 are respectively arranged at the two ends of the seat plate rear rod 32.

[0087] In this embodiment, if Figure 3 , Figure 4 as well as Figure 5 As shown, the lock buckle 42 includes a base 421, a handle 422 and a buckle 423. The base 421 is fixed to the seat plate 3, one end of the handle 422 is rotatably disposed on the base 421, and one end of the buckle 423 is hinged on the handle 422. The handle 422 is rotated toward the lock buckle 42. Figure 4 As shown, the other end of the buckle 423 is inserted into the lock buckle 42, and then the handle 422 is rotated in the opposite direction, and at the same time, one end of the buckle 423 is driven to move away from the lock buckle 42, thereby tightening the lock buckle 42. Figure 5 As shown, the seat plate 3 is thereby locked with the side frame 11 of the leg assembly 1 .

[0088] In this embodiment, if Figure 1 As shown, the quick-assembled and disassembled chair also includes a flexible cushion 5, and the flexible cushion 5 is arranged on the back frame 2 and / or the seat plate 3 to further enhance the sitting experience.

[0089] As described above, the quick-assembly and disassembly chair of the utility model has the following beneficial effects: when assembling the quick-assembly and disassembly chair of the utility model, the two leg assemblies 1 are placed on both sides of the back frame 2 and the positioning portion 13 is set in the large hole 241a of the gourd hole 241. At the same time, the first fixing pin 212 at the bottom of the back frame 2 is aligned with the first through hole 141. Then, the back frame 2 is pushed downward with force, and the positioning portion 13 slides into the small hole 241b of the gourd hole 241. At the same time, the first fixing pin 212 is inserted into the first through hole 141, and the back frame 2 is fixed to the support. The rear side of the leg assembly 1; then, the third fixing pin 321 is inserted into the third through hole 211, and the second fixing pin 331 is aligned with the second through hole 151, and the front side of the seat plate 3 is pressed to make the second fixing pin 331 snap into the second through hole 151 to complete the installation of the seat plate 3. At this time, the quick-assembly and disassembly chair is in the unfolded state; the assembly of the quick-assembly and disassembly chair of the utility model can be completed through the above simple steps, and no fasteners such as screws are needed during the assembly process, and no other tools are needed to assist in the assembly, which greatly improves the assembly experience; further The quick-assembly and disassembly chair of the present invention is also very convenient to disassemble from the assembled state to the state suitable for storage logistics. It only needs to reverse the above-mentioned assembly steps, such as first pushing the front side of the seat plate 3 upward to make the second fixing pin 331 disengage from the second through hole 151, and then pulling the seat plate 3 to make the third fixing pin 321 disengage from the third through hole 211, thus completing the disassembly of the seat plate 3; then pulling the back frame 2 upward so that the positioning portion 13 slides from the small hole 241b of the gourd hole 241 into the large hole 241a, and at the same time the first The fixing pin 212 is disengaged from the first through hole 141, and then the leg assembly 1 is pulled from both sides to make the positioning portion 13 disengage from the large hole 241a, thereby realizing the separation of the back frame 2 and the leg assembly 1, and then completing the disassembly; it should also be noted that the above-mentioned complete assembly and disassembly process does not cause any irreversible damage to the main body of the quick-assembly and disassembly chair of the utility model, so the above-mentioned assembly and disassembly process can be repeated many times, while the chair of the prior art that is assembled by screws after the large hole 241a is likely to cause structural looseness after assembly and disassembly, and may even be unable to be assembled again.

[0090] In summary, the quick-assembly and disassembly chair of the present invention has a simple assembly structure and convenient assembly steps without any tools, while taking into account both the storage size and the convenience of assembly, thus solving the problem that the fixed chair in the prior art cannot take into account both the storage size and the convenience of assembly. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0091] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A quick-assemble and disassemble chair, characterized in that: include: Two leg assemblies (1), the leg assemblies (1) comprising a side frame (11) and a leg (12) arranged at the bottom of the side frame (11), a positioning portion (13) and a first through hole (141) being arranged on the rear side of the side frame (11), and a second through hole (151) being arranged on the front side of the side frame (11); A back frame (2), wherein both sides of the back frame (2) are respectively provided with gourd-shaped holes (241) adapted to the positioning portion (13), the gourd-shaped holes (241) having a large hole (241a) and a small hole (241b) which are interconnected, the large hole (241a) having a size larger than the positioning portion (13), and the small hole (241b) having a size smaller than the positioning portion (13); two first fixing pins (212) adapted to the first through holes (141) are provided at the bottom of the back frame (2), and a third through hole (211) is also provided at the bottom of the back frame (2); A seat plate (3), wherein two second fixing pins (331) adapted to the second through holes (151) are provided on the front side of the seat plate (3), and a third fixing pin (321) adapted to the third through hole (211) is provided on the rear side of the seat plate (3); During assembly, the two leg assemblies (1) are placed on both sides of the back frame (2) and the positioning part (13) is set in the large hole (241a) of the gourd hole (241) and the first fixing pin (212) at the bottom of the back frame (2) is aligned with the first through hole (141). Then, the back frame (2) is pushed downward with force, the positioning part (13) slides into the small hole (241b) of the gourd hole (241) and the first fixing pin (212) is inserted into the first through hole (141) to fix the back frame (2) to the rear side of the leg assembly (1); then, the third fixing pin (321) is inserted into the third through hole (211) and the second fixing pin (331) is aligned with the second through hole (151). The front side of the seat plate (3) is pressed so that the second fixing pin (331) is inserted into the second through hole (151) to complete the installation of the seat plate (3). At this time, the quick assembly and disassembly chair is in an unfolded state.

2. The quick-assembly and disassembly chair according to claim 1, characterized in that: The quick-assembly and disassembly chair further comprises two support members (14), the two support members (14) being symmetrically fixed to the rear side of the leg assembly (1), the first through hole (141) being formed on the support member (14), and when the first fixing pin (212) is inserted into the first through hole (141), the two support members (14) abut against the bottom of the back frame (2) and provide support for the back frame (2).

3. The quick-assembly and disassembly chair according to claim 1, characterized in that: An armrest is provided on the upper portion of the side frame (11).

4. The quick-assembly and disassembly chair according to claim 2, characterized in that: The quick-assembly and disassembly chair further comprises two support tubes (15), the two support tubes (15) being symmetrically fixed to the front side of the leg assembly (1), the second through hole (151) being formed on the support tube (15), and when the second fixing pin (331) is inserted into the second through hole (151), the two support tubes (15) abut against the bottom of the seat plate (3) and provide support for the seat plate (3).

5. The quick-assembly and disassembly chair according to claim 1, characterized in that: At the same time, two third through holes (211) are provided at the bottom of the back frame (2), and a third fixing pin (321) adapted to the two third through holes (211) is provided at the rear side of the seat plate (3).

6. The quick-assembly and disassembly chair according to claim 1, characterized in that: The quick-assembly and disassembly chair also includes a plate buckle assembly (4), which includes a locking hook (41) and a locking buckle (42) matched with the locking hook (41), wherein the locking hook (41) is arranged at the bottom of the rear side of the side frame (11), and the locking buckle (42) is correspondingly arranged at the bottom of the rear side of the seat plate (3), and after pressing the front side of the seat plate (3) to make the second fixing pin (331) snap into the second through hole (151) and completing the installation of the seat plate (3), the locking buckle (42) is pulled to snap into contact with the locking hook (41) to further lock the seat plate (3).

7. The quick-assembly and disassembly chair according to claim 6, characterized in that: The lock (42) comprises a base (421), a rotating handle (422) and a buckle (423); the base (421) is fixed to the seat plate (3); one end of the rotating handle (422) is rotatably disposed on the base (421); one end of the buckle (423) is hinged on the rotating handle (422); the rotating handle (422) is rotated toward the lock (42) so that the other end of the buckle (423) is inserted into the lock (42); and the rotating handle (422) is rotated in the opposite direction, thereby driving one end of the buckle (423) to move in a direction away from the lock (42), thereby tightening the lock (42), thereby locking the seat plate (3) and the side frame (11) of the leg assembly (1).

8. The quick-assembly and disassembly chair according to claim 1, characterized in that: The leg assembly (1) comprises two legs (12), and the two legs (12) are respectively fixed to the front and rear bottom of the side frame (11), so that the four legs (12) of the quick-assembled and disassembled chair frame structure can ensure its stability during use.

9. The quick-assembly and disassembly chair according to claim 3, characterized in that: The side frame (11) comprises a handrail frame (111) and a reinforcement structure (112) arranged in the handrail frame (111).

10. The quick-assemble and disassemble chair according to claim 1, characterized in that: The quick-assembly and disassembly chair further comprises a flexible soft pad (5), and the flexible soft pad (5) is arranged on the back frame (2) and / or the seat plate (3).

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