Chair back rotating structure
By designing a chair back rotation structure that includes back frames and rotating limits, the automatic adjustment and rebound of the back of the chair with twist spring and limited screws can be used to solve the problem of unable to automatically adjust the existing chair back. Comfort and use convenience.
Patent Information
- Application Number
- CN202421330333.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The backrest of the existing chair cannot be automatically adjusted when the human body sits down, which leads to discomfort when the human body leans back. Some rotating back plates are complex in structure and cannot automatically rebound, affecting the comfort of the human body.
A type of back -back rotation structure is designed, including the back and rotating limited parts. Through the coordination of the twist spring and the limited screw, the maximum automatic adjustment and rebound function of the back of the chair backward rotation is 25 °.
The maximum rotation of the maximum rotation of the chair is 25 ° after the back of the chair, meets the needs of the user, improves the comfort of the human body, and simplifies the adjustment process of different people when using.
Smart Images
Figure CN222397671U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotating structures, in particular to a chair back rotating structure. Background Art
[0002] The backrest of an existing chair will automatically expand backward to a certain extent when a person sits down. This is because the back panel of the chair tilts due to the force of the person's backward movement. In the prior art, most chairs are not rotated and adjusted according to the contour of the person's back, which makes the person feel uncomfortable when leaning back.
[0003] Some rotatable back panels have complex structures and cannot realize the automatic rebound function, so different people need to make adjustments when using the chair, which is troublesome to use and affects human comfort. Utility Model Content
[0004] The purpose of the utility model is to provide a chair back rotating structure to solve the above-mentioned problems. After the structure is installed, the chair back can be rotated backward by a maximum of 25 degrees to meet the needs of users.
[0005] The technical solution of the utility model is as follows:
[0006] A chair back rotation structure comprises a back frame and a rotation limiter arranged on the back frame, wherein the rotation limiter comprises a back rotation limiter 1 and a back rotation limiter 2, wherein the back rotation limiter 1 is fixedly arranged on the back frame, the back rotation limiter 2 is rotatably arranged on the back rotation limiter 1 through a torsion spring and a limit screw, and the back rotation limiter 1 and the back rotation limiter 2 are provided with limit edges that limit each other; the back rotation limiter 2 is rotated or reset on the back rotation limiter 1 through the action of the limit edges and the torsion spring; the rotation angle of the back rotation limiter 2 on the back rotation limiter 1 is 0°-25°.
[0007] Furthermore, the back rotation limiter 1 is provided with an upper limit edge 1 and a lower limit edge 1, and the back rotation limiter 2 is provided with an upper limit edge 2 and a lower limit edge 2; the upper limit edge 1 and the upper limit edge 2 limit the backward rotation angle of the chair back, and the lower limit edge 1 and the lower limit edge 2 limit the chair back from rotating forward.
[0008] Furthermore, the lower limit side 1 and the lower limit side 2 are flush with the horizontal plane at 0°; the angles between the upper limit side 1 and the lower limit side 1, and between the upper limit side 2 and the lower limit side 2 are all 25°.
[0009] Furthermore, holes connected to the limiting screws are provided at both ends of the back rotation limiting member 1, and threads matching the limiting screws are provided on the holes; the two limiting screws respectively fix the two torsion springs at the two ends of the back rotation limiting member 1.
[0010] Furthermore, two ends of the torsion spring are respectively fixed on the back rotation limiting member 1 and the back rotation limiting member 2, so as to provide a restoring force when the back rotation limiting member 2 rotates.
[0011] Furthermore, a locking piece is also provided on the second back rotation limiting piece, and the locking piece is provided with a bolt hole for fixedly connecting the second back rotation limiting piece.
[0012] Furthermore, the second back rotation limiting member is fixedly connected to the backrest through a fixing hole on the chair back.
[0013] Furthermore, the back rotation limiting member is fixed on the back frame by welding.
[0014] Compared with the existing technology, the beneficial effects of the utility model are:
[0015] A chair back rotation structure is disclosed. After the structure is installed, the chair back can be rotated backward by a maximum of 25 degrees to meet the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of a chair back rotating structure Figure 1 .
[0017] Figure 2 A schematic diagram of a chair back rotating structure Figure 2 .
[0018] Figure 3 A side view of a rotation limiter for a seat back rotation structure Figure 1 .
[0019] Figure 4 A side view of a rotation limiter for a seat back rotation structure Figure 2 .
[0020] Figure 5 The invention is an enlarged view of the connection between the back rotation limiting member 1 and the back rotation limiting member 2 of a chair back rotation structure.
[0021] Figure 6 The figure is a schematic diagram of the structure of a rotation limiter of a chair back rotation structure.
[0022] Figure 7 A schematic diagram of a chair back rotating structure Figure 3 .
[0023] Figure 8 A schematic diagram of a chair back rotating structure Figure 4 .
[0024] Fig. 9 The present invention is a side view of a chair back rotating structure in use state.
[0025] Fig.10The present invention is a diagram showing the use status of a chair back rotating structure.
[0026] Figure markings: 1-back frame, 2-back rotation limit piece 1, 21-upper limit edge 1, 22-lower limit edge 1, 3-back rotation limit piece 2, 31-upper limit edge 2, 32-lower limit edge 2, 4-locking piece, 5-limiting screw, 6-torsion spring, 7-fixing hole, 8-backrest. DETAILED DESCRIPTION
[0027] It should be noted that relational terms such as "first" and "second" are used only 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0028] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0029] See also Figure 1-10 , a chair back rotation structure, such as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, it includes a back frame 1 and a rotation limiter arranged on the back frame 1, the rotation limiter includes a back rotation limiter 2 and a back rotation limiter 3, the back rotation limiter 2 is fixedly arranged on the back frame 1, the back rotation limiter 23 is rotatably arranged on the back rotation limiter 2 through a torsion spring 6 and a limit screw 5, and the back rotation limiter 2 and the back rotation limiter 3 are provided with limiting edges that limit each other; the back rotation limiter 23 is rotated or reset on the back rotation limiter 2 by the action of the limiting edges and the torsion spring 6; the rotation angle of the back rotation limiter 23 on the back rotation limiter 2 is 0°-25°.
[0030] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the back rotation limit member 2 is provided with an upper limit edge 21 and a lower limit edge 22, and the back rotation limit member 3 is provided with an upper limit edge 31 and a lower limit edge 32; the upper limit edge 21 and the upper limit edge 2 31 limit the backward rotation angle of the chair back 8, and the lower limit edge 22 and the lower limit edge 2 32 limit the chair back 8 from rotating forward.
[0031] The lower limit side 1 22 and the lower limit side 2 32 are flush with the horizontal plane at 0°; the angles between the upper limit side 1 21 and the lower limit side 1 22, and between the upper limit side 2 31 and the lower limit side 2 32 are all 25°.
[0032] like Figure 7 and Figure 8 As shown, holes connected to the limit screws 5 are provided at both ends of the back rotation limit member 2, and threads matching the limit screws 5 are provided on the holes; the two limit screws 5 respectively fix the two torsion springs 6 at the two ends of the back rotation limit member 2.
[0033] The two ends of the torsion spring 6 are respectively fixed on the back rotation limiting member 1 2 and the back rotation limiting member 2 3 to provide a restoring force when the back rotation limiting member 2 3 rotates.
[0034] The back rotation limiting member 2 3 is also provided with a locking member 4, and the locking member 4 is provided with a bolt hole for fixedly connecting the back rotation limiting member 2 3. At the same time, the locking member 4 locks the torsion spring 6 to prevent the torsion spring 6 from popping out.
[0035] The back rotation limiting member 2 3 is fixedly connected to the chair back 8 through the fixing hole 7 on the chair back 8 .
[0036] The back rotation limiting member 2 is fixed on the back frame 1 by welding.
[0037] How it works
[0038] like Fig. 9 and Fig.10 As shown, when in use, the chair back rotating structure is installed on the chair back 8 through the fixing hole 7, so that the chair back structure supports the chair back 8; under the action of the back rotation limiter 1 2 and the back rotation limiter 2 3, the chair back 8 can be rotated backward 0°-25° from the vertical placement state to meet the needs of the user.
[0039] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.
Claims
1. A chair back rotating structure, characterized in that: The invention comprises a back frame (1) and a rotation limiting member arranged on the back frame (1), wherein the rotation limiting member comprises a back rotation limiting member 1 (2) and a back rotation limiting member 2 (3), wherein the back rotation limiting member 1 (2) is fixedly arranged on the back frame (1), and the back rotation limiting member 2 (3) is rotatably arranged on the back rotation limiting member 1 (2) through a torsion spring (6) and a limiting screw (5), and the back rotation limiting member 1 (2) and the back rotation limiting member 2 (3) are provided with limiting edges that limit each other; under the action of the limiting edges and the torsion spring (6), the back rotation limiting member 2 (3) is rotated or reset on the back rotation limiting member 1 (2); the rotation angle of the back rotation limiting member 2 (3) on the back rotation limiting member 1 (2) is 0°-25°.
2. The chair back rotating structure according to claim 1, characterized in that: The back rotation limiting member 1 (2) is provided with an upper limit edge 1 (21) and a lower limit edge 1 (22), and the back rotation limiting member 2 (3) is provided with an upper limit edge 2 (31) and a lower limit edge 2 (32); the upper limit edge 1 (21) and the upper limit edge 2 (31) limit the backward rotation angle of the chair back (8), and the lower limit edge 1 (22) and the lower limit edge 2 (32) limit the chair back (8) from rotating forward.
3. The chair back rotating structure according to claim 2, characterized in that: The lower limit side 1 (22) and the lower limit side 2 (32) are aligned with the horizontal plane at an angle of 0°; the angles between the upper limit side 1 (21) and the lower limit side 1 (22), and between the upper limit side 2 (31) and the lower limit side 2 (32) are all 25°.
4. The chair back rotating structure according to claim 1, characterized in that: The two ends of the back rotation limiting member (2) are provided with holes connected to the limiting screws (5), and the holes are provided with threads matching the limiting screws (5); the two limiting screws (5) respectively fix the two torsion springs (6) at the two ends of the back rotation limiting member (2).
5. A chair back rotating structure according to claim 1 or 4, characterized in that: The two ends of the torsion spring (6) are respectively fixed on the back rotation limiting member 1 (2) and the back rotation limiting member 2 (3), so as to provide a restoring force when the back rotation limiting member 2 (3) rotates.
6. The chair back rotating structure according to claim 1, characterized in that: The second back rotation limiting member (3) is also provided with a locking member (4), and the locking member (4) is provided with a bolt hole for fixedly connecting the second back rotation limiting member (3).
7. The chair back rotating structure according to claim 1, characterized in that: The second back rotation limiting member (3) is fixedly connected to the chair back (8) via a fixing hole (7) on the chair back (8).
8. The chair back rotating structure according to claim 1, characterized in that: The back rotation limiting member 1 (2) is fixed on the back frame (1) by welding.