Detachable rotating structure

Abstract

This application discloses a detachable rotating structure, including the first part and the second part, wherein the rotating end of the first part is uniformly provided with a plurality of grooves along the rotating direction, and the rotating end of the second part is provided with a stopper, and the stopper has an abutting surface in the reverse direction; and a linkage block is provided at the rotating part of the first part and the second part. The application has the following effects: when rotating in the positive direction, the stopper can be continuously engaged in the groove through elastic engagement, and when subjected to force, the abutting surface can form a circumferential limit to achieve the fixation of the lumbar support, and when the linkage block pushes the stopper away from the groove, it can be rotated in the reverse direction to achieve resetting.

What is claimed is: 
     
         1 . A detachable rotating structure, characterized in: It comprises the first part ( 100 ) and the second part ( 111 ), 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 ) has a stopper for being embedded in the groove ( 115 ), the stopper is elastically clamped in the groove ( 115 ) along the axial direction of the rotating shaft ( 113 ), the stopper has an abutting surface ( 116 ) in the reverse direction, the abutting surface ( 116 ) is used to abut 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 ) is provided at the rotating part of the first part ( 100 ) and the second part ( 111 ) for pushing the stopper along the extending direction of the second part ( 111 ). 
     
     
         2 . A detachable rotating structure based on  claim 1 , characterized in: A housing ( 112 ) is provided at the end of the second part ( 111 ), the end of the first part ( 100 ) has a moving ring ( 114 ) rotatably connected to the housing ( 112 ), the groove ( 115 ) is provided on the side ring surface of the moving ring ( 114 ), the outer side of the moving ring ( 114 ) has a circumferential avoidance groove ( 123 ), a linkage ring ( 120 ) for abutting against a side groove wall of the avoidance groove ( 123 ) is rotatably connected in the housing ( 112 ), 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 based on  claim 2 , characterized in that: The stopper comprises a limiting block ( 130 ) elastically sliding along the axial direction of the rotating shaft ( 113 ) at the end of the second part ( 111 ), a one-way convex tooth ( 131 ) arranged on the 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 . A detachable rotating structure based on  claim 3 , characterized in: The end of the second part ( 111 ) has a first groove ( 133 ) for the limiting block ( 130 ) to be embedded in its length direction, a first elastic member is arranged between the bottom of the first groove ( 133 ) and the limiting block ( 130 ), and the housing ( 112 ) has a second elastic member connected to the limiting block ( 130 ) and making it have a tendency to be embedded in the groove ( 115 ). 
     
     
         5 . A detachable rotating structure based on  claim 2 , characterized in: The stopper comprises a limiting block ( 130 ) arranged at the end of the second part ( 111 ), and a one-way protrusion ( 142 ) elastically arranged on the limiting block ( 130 ) along the axial direction of the rotating shaft ( 113 ), and the one-way protrusion ( 142 ) has a guiding inclined surface ( 144 ) for contacting the edge of the groove ( 115 ) on one side along the rotation direction, and the other side is the contact surface ( 116 ). 
     
     
         6 . A detachable rotating structure based on  claim 5 , characterized in: The one-way protrusion ( 142 ) is evenly distributed along the direction of the rotating path. 
     
     
         7 . A detachable rotating structure based on  claim 6 , characterized in: The end of the groove ( 115 ) facing outward in the radial direction is an opening.