Rotating structure applied to office chair back

Abstract

The rotating structure comprises the chair back, a support, a flexible rubber component and a universal locking piece, an installation part is arranged on the front face of the upper portion of the support, a containing cavity is formed in the installation part, the flexible rubber component is arranged in the containing cavity, and the universal locking piece is arranged in the containing cavity. The front end of the universal locking piece penetrates through the support and the soft rubber component from back to front and then is connected with the chair back, under the condition that the chair back is stressed, the chair back can rotate, tilting and resetting of the chair back are achieved through deformation of the soft rubber component, the universal locking piece is arranged in the chair back to provide support for rotation of the chair back, and the chair is simple in structure and convenient to use. The cost is low, and the comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to a rotating structure applied to the back of an office chair. Background Art

[0002] In the prior art, office chairs refer to various types of chairs used for convenience during daily work and social activities. An office chair typically consists of a seat, a frame, and a backrest. The frame's lower end is connected to the seat, while the backrest is located at the upper end. The backrest of an office chair typically needs to be able to tilt to a certain angle. Currently, a common design achieves this by adjusting the swivel connection between the frame and the seat. However, this structure is complex, costly, and requires numerous parts, making assembly and disassembly inconvenient. This also results in a poor user experience.

[0003] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a rotating structure applied to the back of an office chair, which has a simple structure, low cost, and is conducive to improving comfort.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A rotating structure for an office chair back comprises a chair back, a bracket, a soft rubber component and a universal locking piece, wherein a mounting portion is provided on the front upper portion of the bracket, a receiving cavity is provided on the mounting portion, the soft rubber component is provided in the receiving cavity, and the front end of the universal locking piece passes through the bracket and the soft rubber component from back to front and is connected to the chair back. When the chair back is subjected to force, the chair back can rotate.

[0007] In some embodiments, the universal locking member includes a rotating part and a connecting part, wherein the rotating part is hemispherical, and a rotational coupling groove is provided on the back of the mounting part and the back of the bracket, the rotational coupling groove is hemispherical, the rotating part is located in the rotational coupling groove, and the connecting part extends forward and is arranged to be connected to the chair back.

[0008] In some embodiments, a connecting column is provided on the back of the chair back, a through hole is opened in the soft rubber component, and the connecting column and the connecting part are connected in the through hole.

[0009] In some embodiments, an upper limit portion and a lower limit portion are provided on the back of the chair back, the upper limit portion is used to define the top of the soft rubber component, the lower limit portion is used to define the bottom of the soft rubber component, and the upper limit portion and the lower limit portion are used together to define the soft rubber component within the accommodating cavity.

[0010] In some embodiments, an upper limit inclined surface is provided on the inner side of the upper limit portion, and a first inclined surface is provided on the outer side of the top of the mounting portion, and the upper limit inclined surface and the first inclined surface cooperate with each other;

[0011] A lower limit inclined surface is provided on the inner side of the lower limit portion, and a second inclined surface is provided on the outer side of the bottom of the mounting portion, wherein the lower limit inclined surface and the second inclined surface cooperate with each other.

[0012] In some embodiments, a raised portion extending laterally is provided in the accommodating cavity, and a recessed portion extending laterally is provided on the back side of the soft rubber component. When the soft rubber component is provided in the accommodating cavity, the raised portion is embedded in the recessed portion, and the cross-sections of the raised portion and the recessed portion are both arc-shaped.

[0013] In some embodiments, a plurality of hollow portions spaced apart in the transverse direction are respectively provided on the top and bottom of the soft rubber component.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. The utility model provides a rotating structure for an office chair back, which has a simple structure, low cost and is conducive to improving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the office chair back in the embodiment. Figure 1 ;

[0017] Figure 2 This is a three-dimensional diagram of the office chair back in the embodiment. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the office chair back in the embodiment. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the office chair back in the embodiment. Figure 2 ;

[0020] Figure 5 2 is a cross-sectional view of the structure of the office chair back in the embodiment. DETAILED DESCRIPTION

[0021] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific embodiments of the present invention or equivalent replacements of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

[0022] Example 1: Figures 1 to 5 As shown, this embodiment provides a rotating structure for an office chair back, comprising a chair back 1, a bracket 2, a soft rubber component 3 and a universal locking component 4, wherein the lower portion of the bracket 2 is used to connect with the office chair body, a mounting portion 21 is provided on the front upper portion of the bracket 2, a receiving cavity 210 is provided on the mounting portion 21, the soft rubber component 3 is provided in the receiving cavity 210, and the front end of the universal locking component 4 passes through the bracket 2 and the soft rubber component 3 from back to front and is connected to the chair back 1. When the chair back 1 is subjected to force, the chair back 1 can rotate.

[0023] This embodiment provides a rotating structure for an office chair backrest, which has a simple structure, low cost, and is conducive to improving comfort.

[0024] Specifically, the office chair back rotation structure provided in this embodiment can realize the tilt and rotation of the chair back without relying on the rotation connection structure between the bracket and the seat, thereby improving the experience comfort.

[0025] The office chair back rotation structure provided in this embodiment mainly realizes the tilting and resetting of the chair back 1 by deformation of the soft rubber component 3 , and contains a universal locking component 4 to provide support for the rotation of the chair back 1 .

[0026] When the chair back 1 is subjected to force, it will rotate, thereby squeezing the soft rubber component 3, which will produce a certain deformation. At the same time, it will be transmitted to the universal locking part 4, and the universal locking part 4 will rotate together, thereby realizing the tilt and rotation of the chair back 1; when the force applied to the chair back 1 is withdrawn, the soft rubber component 3 will restore the deformation, realizing the function of rotating the chair back 1 back to its original position.

[0027] Furthermore, the universal locking member 4 includes a rotating portion 41 and a connecting portion 42. The rotating portion 41 is hemispherical. A rotational engagement slot 20 is provided on the back of the mounting portion 21 and the back of the bracket 2. The hemispherical rotational engagement slot 20 is located within the rotating engagement slot 20. The connecting portion 42 extends forward to connect with the chair back 1. The rotating portion 41 can rotate within the rotational engagement slot 20, thereby providing coordination and support for the tilt and rotation of the chair back 1. Preferably, the tilt and rotation angle of the chair back 1 is 10-15 degrees, which provides the best user experience.

[0028] Furthermore, a connecting column 11 is provided on the back of the chair back 1, and a through hole 31 is opened in the soft rubber component 3. The connecting column 11 and the connecting part 42 are connected in the through hole 31. The structure is simple and the design is reasonable, which can make the overall structure of the product more reasonable and compact, and can also improve the stability and reliability of the connection between components.

[0029] In this embodiment, an upper limit portion 12 and a lower limit portion 13 are provided on the back of the chair back 1. The upper limit portion 12 defines the top of the soft rubber component 3, and the lower limit portion 13 defines the bottom of the soft rubber component 3. The upper limit portion 12 and the lower limit portion 13 jointly define the soft rubber component 3 in the accommodating cavity 210, thereby improving the stability of the installation of the soft rubber component 3 and preventing the soft rubber component 3 from being easily displaced or loosened.

[0030] Furthermore, an upper limit inclined surface 121 is provided on the inner side of the upper limit portion 12, and a first inclined surface 211 is provided on the outer side of the top of the mounting portion 21, and the upper limit inclined surface 121 and the first inclined surface 211 cooperate with each other;

[0031] A lower limit inclined surface 131 is provided on the inner side of the lower limit portion 13, and a second inclined surface 212 is provided on the outer side of the bottom of the mounting portion 21. The lower limit inclined surface 131 and the second inclined surface 212 cooperate with each other. Through the cooperation of the provided inclined surfaces, the upper limit portion 12, the lower limit portion 13 and the mounting portion 21 of the chair back 1 can be prevented from interfering with each other when the chair back 1 is tilted and rotated, thereby improving the reliability of product use.

[0032] Furthermore, a convex portion 22 extending in the transverse direction is provided in the accommodating cavity 210, and a concave portion 32 extending in the transverse direction is provided on the back side of the soft rubber component 3. When the soft rubber component 3 is set in the accommodating cavity 210, the convex portion 22 is embedded in the concave portion 32, and the cross-sections of the convex portion 22 and the concave portion 32 are both arc-shaped, thereby improving the deformation and restoration capabilities of the soft rubber component 3.

[0033] In this embodiment, a plurality of hollow portions 33 are provided at the top and bottom of the soft rubber component 3 at intervals along the transverse direction. The structure is simple and the design is reasonable, thereby improving the deformation and reset capabilities of the soft rubber component 3, thereby achieving the purpose of improving the comfort of product use.

[0034] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A rotating structure for an office chair back, characterized in that: The invention comprises a chair back (1), a bracket (2), a soft rubber component (3) and a universal locking component (4), wherein a mounting portion (21) is provided on the front upper portion of the bracket (2), a receiving cavity (210) is provided on the mounting portion (21), the soft rubber component (3) is provided in the receiving cavity (210), the front end of the universal locking component (4) passes through the bracket (2) and the soft rubber component (3) from back to front and is connected to the chair back (1), and when the chair back (1) is subjected to force, the chair back (1) can rotate.

2. The rotating structure for an office chair back according to claim 1, characterized in that: The universal locking member (4) comprises a rotating portion (41) and a connecting portion (42), wherein the rotating portion (41) is hemispherical, a rotating joint groove (20) is provided on the back of the mounting portion (21) and the back of the bracket (2), the rotating joint groove (20) is hemispherical, the rotating portion (41) is located in the rotating joint groove (20), and the connecting portion (42) extends forward and is arranged to be connected to the chair back (1).

3. The rotating structure for an office chair back according to claim 2, characterized in that: A connecting column (11) is provided on the back of the chair back (1), a through hole (31) is opened in the soft rubber component (3), and the connecting column (11) and the connecting portion (42) are connected in the through hole (31).

4. The rotating structure for an office chair back according to claim 1, 2 or 3, characterized in that: An upper limit portion (12) and a lower limit portion (13) are provided on the back of the chair back (1); the upper limit portion (12) defines the top of the soft rubber component (3); the lower limit portion (13) defines the bottom of the soft rubber component (3); and the upper limit portion (12) and the lower limit portion (13) jointly define the soft rubber component (3) within the accommodating cavity (210).

5. The rotating structure for an office chair back according to claim 4, characterized in that: An upper limit inclined surface (121) is provided on the inner side of the upper limit portion (12), and a first inclined surface (211) is provided on the outer side of the top of the mounting portion (21), wherein the upper limit inclined surface (121) and the first inclined surface (211) cooperate with each other; A lower limit inclined surface (131) is provided on the inner side of the lower limit portion (13), and a second inclined surface (212) is provided on the outer side of the bottom of the mounting portion (21), wherein the lower limit inclined surface (131) and the second inclined surface (212) cooperate with each other.

6. The rotating structure for an office chair back according to claim 1, 2 or 3, characterized in that: A convex portion (22) extending in the transverse direction is provided in the accommodating cavity (210), and a concave portion (32) extending in the transverse direction is provided on the back side of the soft rubber component (3). When the soft rubber component (3) is arranged in the accommodating cavity (210), the convex portion (22) is embedded in the concave portion (32), and the cross sections of the convex portion (22) and the concave portion (32) are both arc-shaped.

7. The rotating structure for an office chair back according to claim 1, 2 or 3, characterized in that: A plurality of hollow portions (33) spaced apart in the transverse direction are respectively provided on the top and bottom of the soft rubber component (3).

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