A detachable chair

Abstract

The utility model discloses a detachable chair, which comprises a seat surface, a front leg, a rear leg and a backrest. The backrest and the rear leg form an integrated combination. The seat surface rear side is provided with a first connecting part, the combination is provided with a backrest connecting part matched with the first connecting part, the seat surface front side is provided with a second connecting part, and the front leg is provided with a third connecting part matched with the second connecting part. The backrest connecting part and the first connecting part are connected through insertion connection, and the second connecting part and the third connecting part are connected through insertion connection. The backrest and the two rear legs of the chair are designed in an integrated manner, the chair is divided into four parts, the corresponding connecting part is further provided with a mortise and tenon joint structure of dovetail tenon, the mechanical properties of the dovetail tenon and the supporting effect of the reinforcing rib are fully utilized, the stability of the connection of each part is greatly improved, the structural defects of the existing detachable chair, such as insufficient supporting strength and easy loosening, are effectively solved, and the use safety and durability are ensured.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a detachable chair. Background Technology

[0002] Currently, chairs on the market mainly fall into two structural categories: one is a fixed structure assembled with screws or nails, which offers good stability but suffers from large size and low space utilization during transportation and storage, significantly increasing logistics costs; the other is a foldable chair. While this type of product achieves folding functionality through the design of multiple movable components, achieving this often requires complex movable structures and sacrifices product stability, resulting in cumbersome assembly processes, increased production costs, and reduced product stability and comfort. Neither of these structural types can simultaneously meet the dual requirements of convenient assembly and disassembly and structural stability.

[0003] Furthermore, existing chairs mostly use a fixed connection between the seat and backrest, making it impossible to replace individual parts when they are damaged, resulting in the entire chair being discarded even when it still has usability. While existing detachable designs can separate parts, they generally suffer from insufficient support strength and inconvenience in disassembly and assembly. This is especially true for public chairs that require frequent disassembly and storage, where current technology struggles to meet the dual requirements of stability and convenience.

[0004] Therefore, it is of great significance to develop a modular chair that is highly stable, supports quick assembly and disassembly, and facilitates component replacement. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to provide a detachable chair to solve the problems of insufficient stability and inability to be quickly disassembled and assembled.

[0006] According to one aspect of the present invention, a detachable chair is provided, comprising: a seat, front legs, rear legs, and a backrest; wherein the backrest and the rear legs form an integral assembly; a first connecting portion is provided on the rear side of the seat, the assembly is provided with a backrest connecting portion that matches the first connecting portion, a second connecting portion is provided on the front side of the seat, and a third connecting portion that matches the second connecting portion is provided on the front legs; the backrest connecting portion is plugged into the first connecting portion, and the second connecting portion is plugged into the third connecting portion, thereby achieving a detachable connection through the plugging structure.

[0007] Optionally, the first connecting part includes a dovetail tenon protrusion protruding along the width direction of the seat surface, and the backrest connecting part is provided with a dovetail tenon slot that mates with the first connecting part.

[0008] Optionally, the cross-section of the first connecting part is trapezoidal and extends laterally along the side of the seat surface for a predetermined length.

[0009] Optionally, the second connecting portion includes a plurality of downwardly protruding protrusions, the plurality of protrusions including circular columnar protrusions and L-shaped strip protrusions.

[0010] Optionally, the third connecting portion includes a concave contour protrusion that mates with the L-shaped strip protrusion, and a circular groove that mates with the circular column protrusion.

[0011] Optionally, the sides of the L-shaped strip protrusion are provided with anti-slip texture.

[0012] Optionally, the lower end of the front leg is provided with an anti-slip pad, which is fixedly connected to the front leg through a slot.

[0013] Optionally, the bottom surface of the seat is provided with a reinforcing rib structure, and the backrest connection part is located at the connection between the backrest and the rear leg and extends laterally.

[0014] Optionally, the backrest, the rear legs, and the backrest connecting part are integrally injection molded.

[0015] Optionally, there are two front legs, symmetrically arranged at the two corners of the front of the seat, and two rear legs, symmetrically arranged at the lower end of the backrest.

[0016] The detachable chair provided by this utility model integrates the backrest and two rear legs into a single design, allowing the chair to be divided into four parts: the seat, the backrest and rear legs, and the two front legs. The corresponding connecting parts are also equipped with a dovetail tenon joint structure, which fully utilizes the mechanical properties of the dovetail tenon and the supporting role of the reinforcing ribs, greatly improving the stability of the connection between the components. This effectively solves the structural defects of existing detachable chairs, such as insufficient support strength and easy loosening, ensuring safety and durability. Compared with traditional folding chairs, this application reduces production costs while ensuring product comfort.

[0017] The detachable chair described in this application employs a modular design and mortise-and-tenon joint structure for connection, enabling rapid assembly and disassembly. This significantly simplifies the assembly process and is particularly suitable for the frequent disassembly and assembly needs of public places. The stackable storage design of the disassembled components greatly reduces transportation and storage space, significantly lowering logistics costs. The independent modular design of each functional component (seat, backrest, front legs, and back legs) allows for targeted replacement in case of partial damage, avoiding overall waste, improving resource utilization, and demonstrating good economic and environmental benefits. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0019] Figure 1A schematic diagram of a detachable chair according to an embodiment of the present invention is shown;

[0020] Figure 2 This diagram illustrates the connection structure between the detachable chair seat, backrest, and rear legs according to an embodiment of the present invention.

[0021] Figure 3 A schematic diagram of the connection structure between the detachable chair seat and the front legs according to an embodiment of the present invention is shown.

[0022] Figure 4 A schematic diagram illustrating the disassembly and stacking of a detachable chair according to an embodiment of the present invention is shown;

[0023] Figure 5 A schematic diagram of the bottom surface of the detachable chair seat according to an embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram of the front legs of a detachable chair according to an embodiment of the present invention is shown. Detailed Implementation

[0025] The present invention will now be described in more detail with reference to the accompanying drawings. To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application may be implemented in different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0026] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] In the description of this application, the words "exemplary" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments. "And / or" in this document describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. "Connection" describes a connection relationship between related objects. For example, A and B are connected, which can indicate a direct connection between A and B, or an indirect connection between A and B through other devices / units / modules. "Multiple" refers to two or more. Furthermore, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first," "second," etc., are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that "first," "second," etc., do not necessarily imply differences.

[0028] Furthermore, the same reference numerals in the figures denote the same or similar structures, thus repeated descriptions of them will be omitted. That is, the various parts in this specification are described using a combination of parallel and progressive methods, with each part focusing on its differences from the others. Similar or identical parts can be referred to interchangeably. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings in this application are for illustrating relative positional relationships only and do not represent actual scale.

[0029] This application describes many specific details of the present invention, such as the specific structure, dimensions, connection relationships, and techniques of the modules, in order to provide a clearer understanding of the present invention. However, as those skilled in the art will understand, the present invention may be implemented without following these specific details.

[0030] This utility model can be presented in various forms, some of which will be described below.

[0031] Figure 1A schematic diagram of a detachable chair according to an embodiment of the present invention is shown. The detachable chair includes a seat 100, front legs 200, rear legs 310, and a backrest 320. For example, there are two front legs 200, each connected to the bottom surface of the seat 100 at one of its two front corners. For example, there are two rear legs 310, which are integrally designed with the backrest 320. A laterally extending connecting portion 330 is provided at the junction of the rear legs 310 and the backrest 320, connecting to the left and right sides of the seat 100 via the connecting portion 330. The two rear legs 310, the backrest 320, and the backrest connecting portion 330 form a combined body 300. In summary, the detachable chair according to this embodiment of the present invention can be disassembled into four parts for easy storage, stacking, and transportation.

[0032] Specifically, see Figure 2 The diagram shown illustrates the disassembly and stacking of the detachable chair according to an embodiment of the present invention. Figure 2 For example, two sets of the detachable chairs described in this application were stacked together, one green and one black; taking the black detachable chair as an example, from... Figure 2 As can be seen from the diagram, the detachable chair of this utility model embodiment includes an assembly 300 formed by two front legs 200, a seat 100, a backrest 320, two rear legs 310, and a backrest connecting part 330. Each set of chairs is stacked as follows: the two front legs 200 are placed below the assembly 300 and between the two rear legs 310; the assembly 300 is above the front legs 200 with the backrest connecting part 330 facing upwards; and the seat 100 is placed above the assembly 300 and specifically on the rear legs 310. Furthermore, when multiple detachable chairs are stacked, the backrests 320 of adjacent sets of detachable chairs can be staggered during stacking.

[0033] Figure 3 This diagram illustrates the connection structure between the detachable chair seat, backrest, and rear legs according to an embodiment of the present invention.

[0034] The left and right sides of the rear side of the seat 100 are provided with first connecting parts 110. The first connecting parts 110 are dovetail tenons protruding along the width direction of the seat. The first connecting parts 110 extend laterally along the side of the seat for a predetermined length to ensure a secure insertion. The cross-section of the first connecting parts 110 is trapezoidal. The combination of the backrest 320 and the two rear legs 310 also includes a backrest connecting part 330 and a support rod 340. The upper ends of the two rear legs 310 are fixedly connected to the two sides of the backrest 320. The two rear legs 310, the support rod 340 between the two rear legs 310 and the backrest connecting part 330 are integrally injection molded with the backrest 320. The backrest connection 330 is located, for example, at the connection between the backrest 320 and the two rear legs 310. The backrest connection 330 extends laterally and corresponds to the first connection 110 of the seat surface 100. The backrest connection 330 is provided with a dovetail slot corresponding to the first connection 110. The support rod 340 is located, for example, between the two rear legs 310 and below the seat surface 100. During assembly, align the dovetail protrusion of the first connecting part 110 with the dovetail slot of the backrest connecting part 330, and insert the backrest connecting part 330 and the first connecting part 110 horizontally, so that the dovetail protrusion of the first connecting part 110 can be reliably and securely inserted into the dovetail slot, achieving a stable connection between the seat surface 100 and the assembly 300. Furthermore, to enhance the stability of the connection, bolts can be provided. Specifically, the support rod 340 is provided with a longitudinal through hole matching the bolt. The bolt passes through the support rod 340 from below and is at least partially screwed into the bottom surface of the seat surface 100, achieving fixation to the seat surface 100. See [link to documentation]. Figure 5 As shown, a first connecting post 111 is provided at the bottom of the rear end of the seat 100. The first connecting post 111 is used, for example, to connect with the aforementioned bolt.

[0035] Figure 4 This diagram illustrates the connection structure between the detachable chair seat and the front legs according to an embodiment of the present invention; second connecting portions 120 are symmetrically provided at the two corners of the bottom front end of the seat 100, see [reference]. Figure 5 As shown, the second connecting portion 120 includes, for example, a plurality of downwardly protruding protrusions 121, the protrusions 121 including, for example, a second connecting post and an L-shaped strip protrusion, and some of the protrusions 121 are provided with reinforcing ribs extending along the depth direction.

[0036] The upper end of the front leg 200 is provided with a third connecting portion 210 corresponding to the second connecting portion 120, see [reference]. Figure 6As shown, the third connecting portion 210 includes, for example, a U-shaped protrusion corresponding to the L-shaped protrusion in the second connecting portion 120. Furthermore, the third connecting portion 210 also includes multiple through holes 211 corresponding to the second connecting posts in the second connecting portion 120. Bolts are inserted from below the through holes 211 of the front leg 200 and at least partially screwed into the second connecting posts of the seat surface 100 to fix the front leg 200 to the seat surface 100. Specifically, three bolts are provided between each front leg 200 and the seat surface 100, and the three bolts are arranged in a triangular pattern. Furthermore, the sides of the L-shaped protrusions on the seat surface 100 are also provided with anti-slip textures, which significantly increase friction after connection to the third connecting portion 210 of the front leg 200, effectively preventing the front leg 200 from loosening or rotating. Furthermore, an anti-slip pad can be installed at the lower end of the front leg 200. The anti-slip pad can be made of rubber and is fixedly connected to the front leg 200 through a slot. This can increase the friction with the ground, prevent the chair from sliding, and at the same time play a role in shock absorption and noise reduction.

[0037] The aforementioned connecting part adopts a dovetail tenon structure, which has a self-locking characteristic to further ensure the reliability of the connection. When disassembling, it can be pulled out by simply applying force in the opposite direction. Furthermore, bolts can be installed to ensure the stability of the connection and prevent loosening.

[0038] The detachable chair provided by this utility model integrates the backrest and two rear legs into a single design, allowing the chair to be divided into four parts: the seat, the backrest and rear legs, and the two front legs. The corresponding connecting parts are also equipped with a dovetail tenon joint structure, which fully utilizes the mechanical properties of the dovetail tenon and the supporting role of the reinforcing ribs, greatly improving the stability of the connection between the components. This effectively solves the structural defects of existing detachable chairs, such as insufficient support strength and easy loosening, ensuring safety and durability. Compared with traditional folding chairs, this application reduces production costs while ensuring product comfort.

[0039] The detachable chair described in this application employs a modular design and mortise-and-tenon joint structure for connection, enabling rapid assembly and disassembly. This significantly simplifies the assembly process and is particularly suitable for the frequent disassembly and assembly needs of public places. The stackable storage design of the disassembled components greatly reduces transportation and storage space, significantly lowering logistics costs. The independent modular design of each functional component (seat, backrest, front legs, and back legs) allows for targeted replacement in case of partial damage, avoiding overall waste, improving resource utilization, and demonstrating good economic and environmental benefits.

[0040] The embodiments of this utility model described above are examples of specific examples, and do not exhaustively describe all details, nor do they limit the utility model to only specific embodiments. Obviously, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to make good use of this utility model and its modifications. The scope of protection of this utility model should be determined by the scope defined by the claims of this utility model and their equivalents.

Claims

1. A detachable chair, characterized in that, include: The assembly includes a seat, front legs, rear legs, and a backrest; wherein the backrest and the rear legs form an integral assembly; a first connecting portion is provided on the rear side of the seat, the assembly has a backrest connecting portion that matches the first connecting portion, a second connecting portion is provided on the front side of the seat, and a third connecting portion that matches the second connecting portion on the front legs; the backrest connecting portion is plugged into the first connecting portion, and the second connecting portion is plugged into the third connecting portion, achieving a detachable connection through the plug-in structure.

2. The detachable chair according to claim 1, characterized in that, The first connecting part includes a dovetail tenon protrusion that protrudes along the width direction of the seat surface, and the backrest connecting part is provided with a dovetail tenon slot that mates with the first connecting part.

3. The detachable chair according to claim 2, characterized in that, The first connecting part has a trapezoidal cross section and extends laterally along the side of the seat surface for a predetermined length.

4. The detachable chair according to claim 3, characterized in that, The second connecting portion includes a plurality of downwardly protruding protrusions, including circular cylindrical protrusions and L-shaped strip protrusions.

5. The detachable chair according to claim 4, characterized in that, The third connecting part includes a concave contour protrusion that cooperates with the L-shaped strip protrusion, and a circular groove that cooperates with the circular column protrusion. The side of the L-shaped strip protrusion is provided with anti-slip texture.

6. The detachable chair according to claim 5, characterized in that, The lower end of the front leg is provided with an anti-slip pad, which is fixedly connected to the front leg through a slot.

7. The detachable chair according to claim 1, characterized in that, The bottom surface of the seat is provided with a reinforcing rib structure, and the backrest connection part is located at the connection between the backrest and the rear leg and extends laterally.

8. The detachable chair according to claim 1, characterized in that, The backrest, the rear legs, and the backrest connection are integrally injection molded.

9. The detachable chair according to claim 1, characterized in that, The front legs are two in number and are symmetrically positioned at the two corners of the front of the seat. The rear legs are two in number and are symmetrically positioned at the lower end of the backrest.

10. The detachable chair according to claim 1, characterized in that, The front leg is fixed to the seat surface by bolts after being connected to it, and the assembly is fixed to the seat surface by bolts after being connected to it.

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