Fixed quick-release apparatus

A fixed quick-release apparatus, comprising:

• a gear turntable (1), configured to connect to a cycling bracket, wherein a limiting gear ring (101) is disposed on a top circle of the gear turntable (1);
• a housing (2), configured to mount the gear turntable (1);
• a gear stand (3), mounted inside the housing (2), wherein a positioning gear ring (301) that is opposite to the limiting gear ring (101) is disposed on a bottom circle of the gear stand (3), and an anti-rotation plate (302) is disposed at a top of the gear stand (3);
• a limiting spring (303), disposed at a bottom of the gear stand (3), and configured to control a clearance between the positioning gear ring (301) and the limiting gear ring (101), to enable the positioning gear ring (301) to rotate 360° relative to the limiting gear ring (101);
• a lower housing (4), embedded in a bottom of the housing (2);
• a locking turntable (5), configured to connect to an electronic device, wherein a top end of the anti-rotation plate (302) penetrates through the lower housing (4) and extends to a side of the locking turntable (5), to limit relative rotation between the locking turntable (5) and the electronic device;
• and
• at least two buttons (6), wherein one end of the button (6) extends inside the housing (2) and is in contact with the top of the gear stand (3), and the button (6) is pressed to abut against the gear stand (3), to enable the positioning gear ring (301) to be engaged with the limiting gear ring (101), and in addition, the top end of the anti-rotation plate (302) retracts inside the lower housing (4) while the gear stand (3) moves down.