Abstract: The present disclosure relates to the technical field of vehicle components, and in particular to a fastener for securing vehicle accessories, characterized in that the fastener includes: a fastener body, a trim panel securing portion, and an elastic member securing portion, wherein the fastener body includes a vehicle securing portion which is disposed on one end of the fastener body and can be used for securing to a vehicle body, the trim panel securing portion is disposed on one end of fastener body opposite to the vehicle securing portion and can be used for securing to vehicle accessories, and the elastic member securing portion is disposed between the vehicle securing portion and the trim panel securing portion and connects the vehicle securing portion with the trim panel securing portion.

Abstract: A handheld underwater aircraft includes a battery compartment (12) and propellers. There are at least two propellers, which are symmetrically distributed on both sides of the battery compartment (12), and are connected to the battery compartment (12). A special design with axes of the propellers being unparallel with an axis of the battery compartment (12) is adopted, and unparallel included angles make component forces generated by the various propellers in a direction of motion of a non-underwater aircraft offset each other, and enable the underwater aircraft to maintain balanced and forward-forward motion. The design with the axes of the propellers being unparallel with the axis of the battery compartment (12) leads to a little power loss, but avoids a larger power loss caused by the impact of water on the human body, thereby comprehensively improving the thrust of the underwater aircraft in use.

Abstract: A handheld underwater aircraft includes a battery compartment (12) and propellers. There are at least two propellers, which are symmetrically distributed on both sides of the battery compartment (12), and are connected to the battery compartment (12). A special design with axes of the propellers being unparallel with an axis of the battery compartment (12) is adopted, and unparallel included angles make component forces generated by the various propellers in a direction of motion of a non-underwater aircraft offset each other, and enable the underwater aircraft to maintain balanced and forward-forward motion. The design with the axes of the propellers being unparallel with the axis of the battery compartment (12) leads to a little power loss, but avoids a larger power loss caused by the impact of water on the human body, thereby comprehensively improving the thrust of the underwater aircraft in use.