Abstract: A portable miniature massage gun is provided, and belongs to the technical field of massage guns. The portable miniature massage gun includes: a housing, in which a hollow cavity is provided; a motor, mounted inside the housing, where a rotating shaft of the motor is connected with an eccentric wheel; a transmission mechanism, slidably mounted inside the housing, where the transmission mechanism is configured to be driven by the eccentric wheel and drive a massage head to do reciprocating motion; and a power source, configured to supply electrical energy. A corner is formed between the motor and the transmission mechanism. The power source is mounted at the corner inside the housing to make the housing flat. High integration and ultra-miniaturization of a massage gun product are implemented, and portability, maneuverability, and usage comfort are significantly improved.

Abstract: An apparatus for fastening a shoelace threaded in a shoe includes a wheel bin having a receptacle on its top surface, a toothed ring inside the receptacle, and protrusions configured for coupling with mating orifices, a winding wheel having a central cylinder with protruding load ribs, a channel for storing shoelace and orifices through which the shoelace is threaded, a pawl ring with ratcheted ends that engage the toothed ring, a base including a curved surface and a receptacle having mating orifices for coupling with the protrusions of the wheel bin, a screw cap configured for placement on top of the wheel bin, the screw cap having a ring structure configured for coupling with the protruding load ribs of the winding wheel, wherein when the screw cap is rotated, the winding wheel tightens the shoelace and stores excess length of shoelace in the channel.