Detachable chair back connecting piece

Abstract

The utility model discloses a detachable chair back connecting piece. The detachable chair back connecting piece comprises a rubber shell and a framework assembly, the framework assembly is assembled in the rubber shell and used for supporting the rubber shell. A mounting hole in threaded connection with the backrest is formed in one side of the rubber shell, and a connecting groove in sliding connection with the chair back bracket is formed in the other side of the rubber shell; the assembly process of the backrest and the connecting piece and the assembly process of the chair back support and the connecting piece are simplified, an operator can complete installation only through simple screwing and inserting operation, and meanwhile disassembly becomes easy and fast. Moreover, the framework assembly provides firm support for the rubber shell, so that the whole connecting piece is more stable and not easy to damage when bearing the weight of a backrest and being used daily, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field especially is connected for connecting piece of chair back and support. BACKGROUND

[0002] Traditional connecting pieces are mostly made of metal materials such as steel or aluminum alloy, and are assembled by welding, riveting or bolt connection. These traditional processes can provide strong structural strength, but also have some defects that cannot be ignored. For example, the welding process may cause stress concentration, affecting the durability of the overall structure; the surface treatment process is complex, increasing the manufacturing cost and time; at the same time, the metal connecting piece may loosen due to corrosion or fatigue after long-term use, affecting the stability and safety of the seat.

[0003] In the public number CN203633797U disclosed "chair back support connecting piece", including horizontal sleeve and vertical sleeve, the upper end of vertical sleeve is fixed vertically below the middle part of horizontal sleeve, horizontal sleeve and vertical sleeve adopt integral injection molding. Solve the original T-shaped frame welding and surface process complex problem, save the cost, reduce the manufacturing time, but this device is fixed structure, once installation is completed, the connection between chair back and support is relatively fixed, not easy to disassemble or adjust quickly, need to use specific tool or method to install and disassemble, this increases the complexity of operation. SUMMARY

[0004] In order to overcome the defects in the prior art, a detachable chair back connecting piece is provided.

[0005] The technical scheme of the utility model is as follows: a detachable chair back connecting piece, comprising a rubber shell and a framework assembly; the framework assembly is assembled in the rubber shell and is used for supporting the rubber shell; one side of the rubber shell is provided with a mounting hole for screwing with a backrest, and the other side is provided with a connecting groove for sliding connection with a chair back support.

[0006] Preferably, the middle part of the rubber shell is provided with an inner cavity partition plate, which divides the inner cavity into a first inner cavity and a second inner cavity.

[0007] Preferably, the framework assembly comprises a connecting groove support framework, a mounting hole support framework and a screw; the mounting hole support framework is assembled in the first inner cavity through the screw, and the connecting groove support framework is assembled in the second inner cavity.

[0008] Preferably, one end of the connecting groove is provided with a baffle.

[0009] Preferably, the connecting groove support framework comprises a support top plate and a grid support plate, the support top plate is assembled at one end of the grid support plate and abuts against the inner cavity partition plate.

[0010] Preferably, the mounting hole support framework comprises a grid framework and a positioning plate, the positioning plate being assembled in the middle of the grid framework and abutting against the inner wall of the first inner cavity.

[0011] Preferably, the grid framework is provided with a threaded hole for screwing, the threaded hole being in communication with the mounting hole.

[0012] Preferably, the connecting groove is provided with two, which are symmetrically arranged along the center line of the side surface of the rubber shell.

[0013] Preferably, the rubber shell on one side of the mounting hole is provided with a raised connecting platform.

[0014] Preferably, the rubber shell is in a streamline structure.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] A detachable chair back connecting piece simplifies the assembly process of the backrest and the connecting piece, the chair back support and the connecting piece, and an operator can complete the installation only by simple screwing and inserting operations, and the disassembly is also easy and fast.

[0017] Further, the inner cavity partition plate strengthens the overall structural strength of the rubber shell, so that the connecting piece is more stable when bearing external force and is not easy to deform or be damaged.

[0018] Further, the connecting groove support framework ensures the structural stability of the connecting groove, so that the connecting piece can be smoothly and smoothly installed on the chair back support.

[0019] Further, the baffle further strengthens the structural stability of the connecting groove.

[0020] Further, the grid support plate is usually designed in a grid shape, which not only reduces the weight of the support framework, but also improves the bending strength and stability.

[0021] Further, the grid skeleton adopts a grid-like design, which not only reduces the weight of the entire support skeleton, but also improves its structural strength and stability. The grid skeleton provides a solid support foundation for the positioning plate, ensuring the stability and accuracy of the positioning plate during installation. At the same time, the grid skeleton itself has a certain elasticity, which can absorb and buffer external impact to a certain extent, protecting the installation hole from damage.

[0022] Further, the threaded holes on the grid skeleton are pre-machined, with their positions and sizes accurately calculated to ensure that the screws can be accurately and firmly fixed in the desired position. The threaded holes are connected to the installation holes, which means that the screws can pass through the installation holes and be directly screwed into the threaded holes during installation. This design simplifies the installation process and improves installation efficiency.

[0023] Further, the two connecting grooves are symmetrically arranged along the center line of the side of the rubber shell, which helps to achieve structural balance. This balanced design can reduce distortion or deformation caused by asymmetric stress, thereby improving the stability and durability of the entire connecting structure.

[0024] Further, the raised connection platform increases the contact area between the rubber shell and adjacent components, thereby improving the stability of the connection. It helps to distribute external forces and reduce the risk of damage to the rubber shell due to excessive stress. It also provides convenience for positioning and alignment during installation.

[0025] Further, the streamlined structure generally means fewer sharp corners and edges, which helps to reduce the risk of damage caused by accidental collisions. It enhances the compression resistance and impact resistance of the rubber shell. And makes cleaning and maintenance much simpler. Dirt and dust are less likely to accumulate on the surface, reducing the difficulty and time of cleaning work.

[0026] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present utility model will be further described below in conjunction with the drawings:

[0028] Figure 1 is the installation schematic view of the detachable chair back connecting piece of the present utility model;

[0029] Figure 2 is the structural schematic view of the rubber shell of the present utility model;

[0030] Figure 3 is the cross-sectional schematic view of the rubber shell of the present utility model;

[0031] Figure 4The exploded installation schematic view of the detachable chair back connecting piece of the utility model is shown in the figure.

[0032] Figure 5 The structure schematic view of the connecting groove of the utility model is shown in the figure.

[0033] Figure 6 The structure schematic view of the mounting hole of the utility model is shown in the figure.

[0034] The figure mark is explained as follows:

[0035] Rubber shell 1, mounting hole 11, connecting groove 12, inner cavity partition plate 13, first inner cavity 131, second inner cavity 132, baffle 14, convex connecting table 15, framework assembly 2, connecting groove support framework 21, mounting hole support framework 22, screw 23, support top plate 211, grid support plate 212, grid framework 221, positioning plate 222, threaded hole 2211, backrest 3, chair back support 4. DETAILED DESCRIPTION

[0036] The technical scheme of the utility model embodiment is explained and described below in combination with the figures of the utility model embodiment, but the following embodiments are only preferred embodiments of the utility model, and not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0037] In the following description, the appearance of terms such as "inner", "outer", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship only for the convenience of describing the embodiments and simplifying the description, and are not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] As shown in the figure, Figures 1 to 6 The detachable chair back connecting piece of the embodiment comprises a rubber shell 1 and a framework assembly 2 assembled in the interior thereof. The rubber shell 1 adopts a streamline structure design, the surface is smooth and conforms to ergonomics, and the two sides are clearly divided into functional zones: one side is provided with a mounting hole 11 for screwing with a backrest 3, and the other side is symmetrically provided with two connecting grooves 12, the connecting grooves 12 are in sliding connection with a chair back support 4, and quick disassembly and assembly are realized. The surface of the rubber shell 1 on the side where the mounting hole 11 is located is also provided with a convex connecting table 15, for enhancing the contact stability with the backrest 3.

[0039] The interior of the rubber shell 1 is divided into a first inner cavity 131 and a second inner cavity 132 by a horizontal inner cavity partition plate 13 arranged in the middle. The framework assembly 2 comprises a connecting groove support framework 21 and a mounting hole support framework 22, which are respectively assembled in the second inner cavity 132 and the first inner cavity 131. The mounting hole support framework 22 is composed of a grid framework 221 and a positioning plate 222 fixed vertically in the middle, and the positioning plate 222 is in close abutment with the inner wall of the first inner cavity 131, thereby ensuring the stability of the mounting hole support framework 22. Threaded holes 2211 are formed in the grid framework 221, and the mounting hole 11 is screwed and fixed with the backrest 3 through the screw 23.

[0040] The connecting groove support framework 21 is composed of a support top plate 211 and a grid support plate 212, and the support top plate 211 is located at the top of the grid support plate 212 and is in abutment with the inner cavity partition plate 13, thereby forming rigid support for the connecting groove 12. Two connecting grooves 12 are symmetrically distributed along the center line of the side surface of the rubber shell 1, and the end of each connecting groove 12 is provided with a baffle 14 to prevent the chair back support 4 from falling out when being slidably inserted.

[0041] In the assembly process, first, in the factory, the connecting groove support framework 21 is embedded in the second inner cavity 132, so that the support top plate 211 is in abutment with the inner cavity partition plate 13; the mounting hole support framework 22 is fixed in the first inner cavity 131 by the screw 23, the threaded hole 2211 is aligned with the mounting hole 11, and the connecting piece is assembled; then, the chair back support 4 is slidably inserted along the connecting groove 12 until it is limited by the baffle 14, and the connection is completed; the backrest 3 is locked and fixed on the protruding connecting table 15 by the screw passing through the mounting hole 11 and the threaded hole 2211. The connecting piece combines the elastic buffering of the rubber shell 1 and the rigid support of the framework assembly 2, which not only guarantees the connection strength, but also reduces the vibration noise, and the streamline design improves the aesthetic appearance and the use comfort.

[0042] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the above specific embodiments and the drawings. Any modification of the function and structure principle without deviating from the present application will be included in the scope of the claims.

Claims

1. A detachable chair back connector, characterized by: It comprises a rubber shell (1) and a framework assembly (2); the framework assembly (2) is assembled in the rubber shell (1) for supporting the rubber shell (1); one side of the rubber shell (1) is provided with a mounting hole (11) for screwing with a backrest (3), and the other side is provided with a connecting groove (12) for sliding connection with a chair back support (4).

2. A detachable seat back connector according to claim 1, wherein: The middle part of the rubber shell (1) is provided with an inner cavity partition plate (13), which divides the inner cavity into a first inner cavity (131) and a second inner cavity (132).

3. A detachable seat back connector according to claim 2, wherein: The framework assembly (2) comprises a connecting groove support framework (21), a mounting hole support framework (22) and a screw (23); the mounting hole support framework (22) is assembled in the first inner cavity (131) through the screw (23), and the connecting groove support framework (21) is assembled in the second inner cavity (132).

4. A detachable seat back connector as defined in claim 1, wherein: One end of the connecting groove (12) is provided with a baffle (14).

5. A detachable seat back connector as defined in claim 3, wherein: The connecting groove support framework (21) comprises a support top plate (211) and a grid support plate (212), the support top plate (211) is assembled at one end of the grid support plate (212) and abuts against the inner cavity partition plate (13).

6. A detachable seat back connector as defined in claim 3, wherein: The mounting hole support framework (22) comprises a grid framework (221) and a positioning plate (222), the positioning plate (222) is assembled in the middle part of the grid framework (221) and abuts against the inner wall of the first inner cavity (131).

7. A detachable seat back connector according to claim 6, wherein: The grid framework (221) is provided with a threaded hole (2211) for fixing the screw (23), and the threaded hole (2211) is communicated with the mounting hole (11).

8. A detachable seat back connector as defined in claim 1, wherein: The connecting groove (12) is provided with two, which are symmetrically arranged along the center line of the side of the rubber shell (1).

9. A detachable seat back connector as defined in claim 1, wherein: The rubber shell (1) on one side of the mounting hole (11) is provided with a raised connecting table (15).

10. The detachable seatback connector of claim 1, wherein: The rubber shell (1) is in a streamline structure.

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