Separable rotating structure

Abstract

The utility model discloses a separable rotating structure which comprises a first part and a second part, a plurality of grooves are evenly distributed in the rotating end of the first part in the rotating direction, the rotating end of the second part is provided with limiting pieces used for being embedded into the grooves, and the limiting pieces are elastically clamped into the grooves in the axial direction of a rotating shaft. The limiting piece is provided with an abutting face in the opposite direction, and the abutting face is used for abutting against and limiting the inner wall of the groove so as to limit rotation of the first part and the second part. A linkage block is arranged at the rotating position of the first part and the second part. The waist rest has the following effects that when the waist rest rotates in the forward direction, the limiting piece can be continuously clamped in the groove through elastic clamping, adjustment of different angles is achieved, when the waist rest is stressed, that is, when the waist rest is stressed in the reverse direction, the abutting face can form circumferential limiting, fixing of the waist rest is achieved, and when the limiting piece is pushed away from the groove by the linkage block, the limiting piece is clamped in the groove. And the rotating shaft can rotate in the opposite direction to realize resetting.

Description

Technical Field

[0001] The present application relates to the technical field of rotating devices, and in particular to a detachable rotating structure. Background Art

[0002] The seat back generally refers to the rear support part of a chair, which is usually used to support and support the back of the person sitting in the chair, so that people can sit more comfortably. The seat back can adopt a variety of different designs and shapes to suit different types of seats and usage scenarios. The design and comfort of the seat back are very important to people's sitting posture and experience, so they are carefully considered and optimized in furniture design and automotive engineering.

[0003] The existing seats usually have the seat back designed to match the shape of the human spine. When a person's waist leans on the seat back, the back supports the waist and back. However, due to the different body shapes of users, not all users can obtain the ideal support effect when leaning on the seat, which affects comfort. Utility Model Content

[0004] In order to more conveniently adjust the lumbar support of the seat and improve comfort, the present application provides a detachable rotating structure.

[0005] A detachable rotating structure provided in the present application adopts the following technical solution: a detachable rotating structure includes a first part and a second part, the end of the first part is rotatably connected to the second part, the rotating end of the first part is evenly distributed with a plurality of grooves along the rotation direction, the rotating end of the second part has a limiting member for being embedded in the groove, the limiting member is elastically clamped in the groove along the axial direction of the rotation axis, the limiting member has an abutment surface in the opposite direction, the abutment surface is used to abut against the inner wall of the limiting groove to limit the rotation of the first part and the second part; a linkage block for pushing the limiting member along the extension direction of the second part is provided at the rotation point of the first part and the second part.

[0006] By adopting the above technical solution, when rotating in the positive direction, the limit piece can be continuously engaged in the groove through elastic engagement to achieve different angle adjustments, and when subjected to force, that is, when subjected to force in the reverse direction, the abutment surface can form a circumferential limit to achieve the fixation of the lumbar support, and when the linkage block pushes the limit piece away from the groove, it can be rotated in the reverse direction to achieve resetting, thereby achieving adjustment of the lumbar support and improving comfort.

[0007] Preferably, a shell is provided at the end of the second part, and a moving ring rotatably connected to the shell is provided at the end of the first part, and the groove is provided on the side ring surface of the moving ring, and the outer side of the moving ring has a circumferential avoidance groove, and a linkage ring rotatably connected to the shell for abutting against a groove wall on one side of the avoidance groove, and the linkage block is located on the outer wall of the linkage ring, and a protrusion located in the avoidance groove is also provided on the side ring surface of the linkage ring, and the protrusion is used to abut against the side wall of the avoidance groove so that the linkage ring rotates synchronously.

[0008] Preferably, the limiting member comprises a limiting block elastically sliding at the end of the second portion along the axial direction of the rotating shaft, and a one-way convex tooth arranged on a side of the limiting block close to the moving ring, and the linkage block is used to abut against the limiting block.

[0009] Preferably, the end of the second part has a first groove along its length direction for the limit block to be embedded in, a first elastic member is arranged between the bottom of the first groove and the limit block, and the shell has a second elastic member connected to the limit block and making it have a tendency to be embedded in the groove.

[0010] Preferably, the limiting member includes a limiting block arranged at the end of the second part and a one-way protrusion elastically arranged on the limiting block along the axial direction of the rotating shaft, and the one-way protrusion has a guiding inclined surface on one side along the rotation direction for abutting against the edge of the groove, and the other side thereof is the abutting surface.

[0011] Preferably, the one-way protrusions are evenly distributed along the direction of the rotation path.

[0012] Preferably, the end of the groove facing radially outward is open.

[0013] In summary, the present application includes at least one of the following beneficial technical effects: when rotating in the positive direction, the limit piece can be continuously engaged in the groove through elastic engagement to achieve different angle adjustments, and when subjected to force, that is, when subjected to force in the reverse direction, the abutment surface can form a circumferential limit to achieve fixation of the lumbar support, and when the linkage block pushes the limit piece away from the groove, it can be rotated in the reverse direction to achieve resetting, thereby achieving adjustment of the lumbar support and improving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the structure of Example 1 of the present application;

[0015] Figure 2 is a schematic diagram of the internal structure of Example 1 of the present application;

[0016] Figure 3 It is a schematic diagram of the structure of the first part and the rotating shaft;

[0017] Figure 4It is a schematic diagram of the partial explosion structure of Example 1 of the present application;

[0018] Figure 5 This is a schematic diagram of the connection relationship between the limit block and the second part of Example 1 of the present application;

[0019] Figure 6 This is a schematic diagram of the connection relationship between the linkage ring, the motion ring and the limit block in Example 1 of the present application;

[0020] Figure 7 It is a schematic diagram of the internal structure of the limit block in Example 2 of the present application;

[0021] Figure 8 It is a partial explosion diagram of the limit block in Example 2 of the present application.

[0022] Explanation of the reference numerals: 100, first part; 111, second part; 112, shell; 113, rotating shaft; 114, moving ring; 115, groove; 116, abutment surface; 120, linkage ring; 121, protrusion; 122, linkage block; 123, avoidance groove; 130, limit block; 131, one-way convex tooth; 132, linkage groove; 133, first groove; 134, second groove; 135, first spring; 136, second spring; 142, one-way protrusion; 143, abutment block; 144, guiding inclined surface. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1: A detachable rotating structure, referring to Figure 1 , Figure 2 , including a first part 100 and a second part 111, the first part 100 and the second part 111 are respectively fixed to the chair back or the waist support by bolts. Generally speaking, the first part 100 is installed on the chair back, and the second part 111 is installed on the waist support.

[0025] Reference Figure 2 , Figure 3 The end of the first part 100 is rotatably connected to the second part 111. In this embodiment, the end of the second part 111 is sleeved with a shell 112, and the shell 112 is a hollow structure. The first part 100 has a rotating shaft 113 that passes through the shell 112. The front part of the rotating shaft 113 is cylindrical, and the rear half is prismatic. A moving ring 114 is sleeved on the rotating shaft 113. The inner side of the moving ring 114 is a prismatic hole that is clamped on the rotating shaft 113, so that the moving ring 114 can be synchronously rotated and connected to the rotating shaft 113.

[0026] Reference Figure 4 , Figure 5, a plurality of grooves 115 are evenly distributed along the circumferential direction on the side ring surface of the motion ring 114, and correspondingly, a stopper for being embedded in the groove 115 is provided at the rotating end of the second part 111. The stopper is elastically clamped in the groove 115 along the axial direction of the rotating shaft 113, and the stopper has an abutment surface 116 along the reverse direction, and the abutment surface 116 is used to abut against the inner wall of the limit groove 115 to limit the rotation of the first part 100 and the second part 111. In this embodiment, the positive direction is the direction of rotation adjustment of the normal lumbar support, and the reverse direction is the reverse rotation. At this time, the existence of the abutment surface 116 enables the first part 100 and the second part 111 to be relatively fixed in the reverse direction.

[0027] Reference Figure 2 , Figure 4 , Figure 6 A linkage ring 120 is rotatably connected in the shell 112, a protrusion 121 is provided on the side ring surface of the linkage ring 120, and a linkage block 122 is provided on the outer wall of the linkage ring 120. In this embodiment, the linkage ring 120 is rotatably connected to the shell 112, and a torsion spring (not shown in the figure) is provided at the rotation position of the linkage ring 120, so that the linkage ring 120 can be reset to the original position under the action of the torsion spring after each rotation. The outer side of the moving ring 114 has a circumferential avoidance groove 123, and the avoidance groove 123 is arc-shaped. The above-mentioned protrusion 121 is embedded in the avoidance groove 123. During the rotation of the moving ring 114, the protrusion 121 will slide in the avoidance groove 123. When the end of the avoidance groove 123 abuts against the protrusion 121, it can drive the linkage ring 120 to rotate. During the rotation, the linkage block 122 will abut against the limit member to make the limit member detach from the moving ring 114, and the circumferential limit of the first part 100 and the second part 111 is released.

[0028] Reference Figure 5 , Figure 6 In this embodiment, the stopper includes a stopper 130 elastically sliding on the end of the second part 111 along the axial direction of the rotating shaft 113, a one-way convex tooth 131 provided on the side of the stopper 130 close to the moving ring 114, and the linkage block 122 is used to abut against the stopper 130. A linkage groove 132 is provided on one side of the stopper 130 for the linkage block 122 to enter. During the rotation process, the linkage block 122 will be gradually embedded in the linkage groove 132. There is a convex part in the linkage groove 132, which can make the stopper 130 completely disengage from the groove 115 after abutment, and at this time, the first part 100 and the second part 111 can rotate in opposite directions.

[0029] The end of the second portion 111 has a first groove 133 along its length direction for the stop block 130 to be embedded in. A first elastic member is disposed between the bottom of the first groove 133 and the stop block 130. In this embodiment, the first elastic member is a first spring 135. The bottom of the first groove 133 has a second groove 134. The first spring 135 is disposed in the second groove 134. The housing 112 has a second elastic member connected to the stop block 130 and having a tendency to be embedded in the groove 115. In this embodiment, the second elastic member is a second spring 136.

[0030] The working principle of Example 1 is as follows: first, the first part 100 and the second part 111 rotate relative to each other, and the rotating shaft 113 will drive the moving ring 114 to rotate synchronously. At this time, the limit block 130 is limited by the first groove 133, so the inclined surface of the one-way convex tooth 131 will abut against the edge of the groove 115, so that the limit block 130 retreats along the length direction of the rotating shaft 113. At this time, the second spring 136 is compressed, so that the one-way convex tooth 131 can be embedded in the next groove 115, and the flat part of the one-way convex tooth 131 is the abutment surface 116, which fits with the inner wall of the groove 115 so that it will not disengage in the reverse direction.

[0031] With continuous rotation and adjustment, the avoidance groove 123 will move until it abuts the protrusion 121, at which time the linkage ring 120 will be driven to rotate, and the linkage block 122 will enter the linkage groove 132. At the same time, the rotation direction of the second part 111 enters the last gear. At this time, the linkage block 122 pushes the limit block 130 to disengage, and the abutment surface 116 will also disengage. At this time, the first spring 135 will be compressed. During this process, the time is enough to make the second part 111 rotate in the opposite direction, and then the limit block 130 moves along the first groove 133 under the action of the first spring 135, and resets here. At this time, the abutment surface 116 continues to be in the opposite direction. The overall process is relatively simple, and the position of the lumbar support can be easily adjusted to improve comfort.

[0032] Embodiment 2: The difference from Embodiment 1 is that, referring to Figure 7 , Figure 8 The limiting member includes a limiting block 130 disposed at the end of the second portion 111, and a one-way protrusion 142 elastically disposed on the limiting block 130 along the axial direction of the rotating shaft 113. The one-way protrusion 142 has a guiding inclined surface 144 for contacting the edge of the groove 115 on one side along the rotating direction, and the other side is a contact surface 116. The one-way protrusions 142 are evenly distributed along the direction of the rotating path. The end of the groove 115 facing outward in the radial direction is an opening.

[0033] Each one-way protrusion 142 is penetrated on the limit block 130, and a separate stop block 143 is provided in the inner cavity of the limit block 130. One stop block 143 is connected to multiple one-way protrusions 142. In this embodiment, the second spring 136 exists in the inner cavity of the limit block 130 and is connected to the stop block 143, so that the overall limit block 130 will only move back and forth along the length direction of the second part 111, thereby reducing the movement of the limit block 130 in other directions to avoid jamming during long-term use.

[0034] When the linkage block 122 pushes the limit block 130, it can withdraw from the opening side of the groove 115, which is more convenient. At the same time, the separate one-way protrusion 142 can make the cooperation between the abutment surface 116 and the groove 115 smoother during separation and combination.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detachable rotating structure, characterized in that: The invention comprises a first part (100) and a second part (111), wherein the end of the first part (100) is rotatably connected to the second part (111), the rotating end of the first part (100) is uniformly provided with a plurality of grooves (115) along the rotating direction, the rotating end of the second part (111) is provided with a limiting member for being embedded in the groove (115), the limiting member is elastically clamped in the groove (115) along the axial direction of the rotating shaft (113), the limiting member is provided with an abutting surface (116) along the reverse direction, the abutting surface (116) is used for abutting against the inner wall of the groove (115) to limit the rotation of the first part (100) and the second part (111); A linkage block (122) for pushing the limiting member along the extension direction of the second part (111) is provided at the rotation point between the first part (100) and the second part (111).

2. A detachable rotating structure according to claim 1, characterized in that: The end of the second part (111) is provided with a shell (112), the end of the first part (100) is provided with a moving ring (114) rotatably connected to the shell (112), the groove (115) is provided on the side ring surface of the moving ring (114), the outer side of the moving ring (114) is provided with a circumferential avoidance groove (123), a linkage ring (120) is rotatably connected to the shell (112) for abutting against a side groove wall of the avoidance groove (123), the linkage block (122) is located on the outer wall of the linkage ring (120), and a protrusion (121) located in the avoidance groove (123) is also provided on the side ring surface of the linkage ring (120), the protrusion (121) is used to abut against the side wall of the avoidance groove (123), so that the linkage ring (120) rotates synchronously.

3. A detachable rotating structure according to claim 2, characterized in that: The limiting member comprises a limiting block (130) elastically sliding at the end of the second part (111) along the axial direction of the rotating shaft (113), and a one-way convex tooth (131) arranged on a side of the limiting block (130) close to the moving ring (114), and the linkage block (122) is used to abut against the limiting block (130).

4. The detachable rotating structure according to claim 3, characterized in that: The end of the second part (111) has a first groove (133) along its length direction for the limit block (130) to be embedded in, a first elastic member is arranged between the bottom of the first groove (133) and the limit block (130), and the shell (112) has a second elastic member connected to the limit block (130) and allowing it to have a tendency to be embedded in the groove (115).

5. The detachable rotating structure according to claim 2, characterized in that: The limiting member comprises a limiting block (130) arranged at the end of the second portion (111), and a one-way protrusion (142) elastically arranged on the limiting block (130) along the axial direction of the rotating shaft (113); the one-way protrusion (142) has a guiding inclined surface (144) for contacting the edge of the groove (115) on one side along the rotating direction, and the other side is the contact surface (116).

6. The detachable rotating structure according to claim 5, characterized in that: The one-way protrusions (142) are evenly distributed along the direction of the rotation path.

7. The detachable rotating structure according to claim 6, characterized in that: The end of the groove (115) facing outward in the radial direction is open.

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