Abstract: The present application discloses a clamping mechanism for a guitar capo, including an upper clamp (1) and a lower clamp (9). A slider rail (2) is fixedly installed inside the upper clamp (1), a rebound torsion spring fixing pin (3) is fixedly installed inside the slider rail (2), and a rebound torsion spring (4) is fixedly installed inside the slider rail (2) by the rebound torsion spring fixing pin (3). A crank hinge (6) is fixedly installed inside the slider rail (2). The clamping mechanism of the guitar capo is provided with the lower clamp (9), and the cam structure on the right side of the lower clamp (9) is stuck and cannot move the self-locking slider (7) in the opposite direction, thus the lower clamp (9) cannot rotate in the opposite direction, thereby achieving locking effect and completing locking and clamping.

Abstract: A wireless audio transmission system includes a wireless audio transmitter matched with an audio input device in a plug-in manner, a wireless audio receiver matched with an audio output device in the plug-in manner, the audio output device is provided with a first plug-in hole, the audio input device is provided with a second plug-in hole, the wireless audio receiver includes a signal receiving component and a first plug-in connector-signally connected with the signal receiving component and configured for matching with the first plug-in hole in the plug-in manner, and a first housing connected with the first plug-in connector; the first housing is encircled to form a first accommodation cavity which has an opening and is configured for accommodating the signal receiving component, the first plug-in connector is connected with the opening of the first housing. The present application facilitates a wide application of the wireless audio transmission system.