Connecting structure of hidden replaceable backrest

Abstract

The utility model discloses a hidden type replaceable backrest connecting structure which comprises a backrest plate and a backrest supporting piece for supporting the backrest plate, the backrest plate is installed in the backrest supporting piece through a detachable structure, and the detachable structure comprises a base installed on the backrest supporting piece and a sleeving piece installed on the backrest plate. The sleeving piece is arranged on the base in a sliding and sleeving mode to achieve connection of the backrest plate and the backrest supporting piece. The utility model relates to the technical field of furniture. According to the connecting structure of the hidden replaceable backrest, the backrest plate and the backrest supporting piece are connected through the detachable structure, the stability of an office chair is improved through mutual engagement of the base and the sleeving piece, the office chair is firmer, and therefore safer and more stable support is provided for a user; in addition, the backrest plate can be easily detached and replaced so as to adapt to different purposes or decoration styles. By means of the design, the flexibility of the furniture is improved, and the furniture can be customized and adjusted according to different requirements and environments.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a connection structure of a hidden interchangeable backrest. Background Art

[0002] Office leisure chairs are widely used in modern life, and the support and connection structure of the backrest plays a vital role in the comfort and stability of the chair. The office chair backrest styles on the market are relatively single, which cannot meet the diverse selection needs of customers. Therefore, it is necessary to develop a support and connection structure with a replaceable backrest to adapt to different usage scenarios and provide customers with better choices. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a connection structure for a concealed interchangeable backrest, which solves the above-mentioned problems.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a hidden connection structure of a replaceable backrest, including a backrest plate and a backrest support member supporting the backrest plate, the backrest plate is installed in the backrest support member through a detachable structure, the detachable structure includes a base installed on the backrest support member and a sleeve installed on the backrest plate, the sleeve member can be slidably mounted on the base to achieve the connection between the backrest plate and the backrest support member, and the detachable structure is hidden between the backrest plate and the backrest support member.

[0005] Preferably, the cross section of the base is an I-shape, a mounting groove adapted to the rear half of the base is provided in the backrest support, and the rear side of the base is injection-molded and fixed in the mounting groove.

[0006] Preferably, a T-shaped groove adapted to the front half of the base is provided in the lower middle portion of the rear side of the sleeve.

[0007] Preferably, the sleeve is fixedly connected to the backrest plate by bolts.

[0008] Preferably, a positioning circular hole is provided on the front side of the sleeve corresponding to the bolt installation position, and positioning square holes are provided on both sides of the middle of the front side of the sleeve.

[0009] Preferably, a round positioning block and a square positioning block are provided on the rear side of the backrest plate and are correspondingly inserted into the round positioning hole and the square positioning hole.

[0010] Beneficial Effects

[0011] The utility model provides a connection structure of a hidden interchangeable backrest. Compared with the prior art, it has the following beneficial effects:

[0012] 1. The connection structure of the hidden interchangeable backrest connects the backrest board and the backrest support by setting a detachable structure, and uses the mutual engagement of the base and the sleeve to help increase the stability of the office chair, making it more solid, thereby providing users with safer and more stable support; in addition, the backrest board can be easily disassembled and replaced to adapt to different uses or decorative styles. This design increases the flexibility of the furniture, allowing the furniture to be customized and adjusted according to different needs and environments.

[0013] 2. The connection structure of the hidden interchangeable backrest is that the base is embedded in the backrest support through the installation groove, and the sleeve is fixed to the backrest plate by bolts. The positioning circular hole and the positioning square hole cooperate with the round positioning block and the square positioning block to ensure the force strength of the base and the sleeve, and ensure the firmness of the backrest plate installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the assembly drawing of the utility model;

[0015] Figure 2 It is an exploded view of the utility model;

[0016] Figure 3 It is a three-dimensional diagram of the backrest support member of the utility model;

[0017] Figure 4 It is a front view of the backrest support member and the sleeve connector of the utility model;

[0018] Figure 5 It is a rear view of the socket connector of the utility model;

[0019] Figure 6 It is a front view of the socket connector of the utility model.

[0020] In the figure: 1-backrest plate, 11-round positioning block, 12-square positioning block, 2-backrest support, 21-installation groove, 31-base, 32-sleeve connector, 33-T-slot, 34-positioning round hole, 35-positioning square hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides two technical solutions:

[0023] Figure 1-2The first embodiment is shown: a connection structure of a hidden interchangeable backrest, comprising a backrest board 1 and a backrest support 2 supporting the backrest board 1, wherein the backrest board 1 is installed in the backrest support 2 via a detachable structure 3, wherein the detachable structure 3 comprises a base 31 installed on the backrest support 2 and a socket 32 ​​installed on the backrest board 1, wherein the socket 32 ​​can be slidably mounted on the base 31 to realize the connection between the backrest board 1 and the backrest support 2, and the detachable structure 3 is hidden between the backrest board 1 and the backrest support 2.

[0024] By providing a detachable structure 3 to connect the backrest board 1 and the backrest support 2, the mutual engagement of the base 31 and the sleeve 32 helps to increase the stability of the office chair, making it more solid, thereby providing a safer and more stable support for the user; in addition, the backrest board 1 can be easily disassembled and replaced to adapt to different uses or decoration styles. This design increases the flexibility of the furniture, allowing the furniture to be customized and adjusted according to different needs and environments.

[0025] Figure 2-6 The second embodiment is shown, which is mainly different from the first embodiment in that: the cross section of the base 31 is I-shaped, a mounting groove 21 adapted to the rear half of the base 31 is opened in the back support 2, and the rear side of the base 31 is injection-molded and fixed in the mounting groove 21, and a T-shaped groove 33 adapted to the front half of the base 31 is opened in the middle and lower part of the rear side of the sleeve 32;

[0026] The socket 32 ​​is fixedly connected to the backrest plate 1 by bolts, a positioning circular hole 34 is provided on the front side of the socket 32 ​​corresponding to the bolt installation position, and positioning square holes 35 are provided on both sides of the middle of the front side of the socket 32, and a round positioning block 11 and a square positioning block 12 are provided on the rear side of the backrest plate 1 to be inserted into the positioning circular hole 34 and the positioning square hole 35 respectively.

[0027] The base 31 is embedded in the backrest support 2 through the installation groove 21, and the sleeve 32 is fixed to the backrest board 1 by bolts. The positioning circular hole 34 and the positioning square hole 35 cooperate with the circular positioning block 11 and the square positioning block 12 to ensure the force strength of the base 31 and the sleeve 32 and ensure the firmness of the installation of the backrest board 1.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] During installation, fit the sleeve 32 onto the backrest board 1, align the round positioning block 11 and the square positioning block 12 with the positioning round hole 34 and the positioning square hole 35, and then fix the sleeve 32 on the backrest board 1 with bolts, and then insert the backrest board 1 from top to bottom so that the T-slot 33 of the sleeve 32 covers the base 31.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure of a hidden interchangeable backrest, comprising a backrest plate and a backrest support member supporting the backrest plate, characterized in that: The backrest board is installed in the backrest support through a detachable structure, and the detachable structure includes a base installed on the backrest support and a sleeve installed on the backrest board. The sleeve can be slidably mounted on the base to achieve the connection between the backrest board and the backrest support, and the detachable structure is hidden between the backrest board and the backrest support.

2. A connection structure of a concealed interchangeable backrest according to claim 1, characterized in that: The cross section of the base is an I-shape, a mounting groove adapted to the rear half of the base is provided in the backrest support, and the rear side of the base is injection-molded and fixed in the mounting groove.

3. The connection structure of a concealed interchangeable backrest according to claim 2, characterized in that: A T-shaped groove matched with the front half of the base is provided at the middle and lower part of the rear side of the sleeve connector.

4. The connection structure of a concealed interchangeable backrest according to claim 1, characterized in that: The sleeve connection piece is fixedly connected to the backrest plate via bolts.

5. The connection structure of a concealed interchangeable backrest according to claim 4, characterized in that: A positioning circular hole is provided at the front side of the sleeve corresponding to the bolt installation position, and positioning square holes are provided on both sides of the middle of the front side of the sleeve.

6. A connection structure of a concealed interchangeable backrest according to claim 5, characterized in that: A round positioning block and a square positioning block are arranged on the rear side of the backrest plate and are inserted into the round positioning hole and the square positioning hole respectively.

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