Screw retaining mechanism and PV junction box assembled with the screw retaining mechanism

摘要

A screw retaining mechanism includes a hollow stud and a nut is matched with the hollow stud. The hollow stud has a plurality of elastic plates extending from a free end thereof and along a peripheral wall thereof. An opening is located between two adjacent elastic plates. An inner wall of the nut has a plurality of tubers protruding in the axial direction to match into the opening. The elastic plate defines a first side face and a second side face opposite to the first side face. Said first side face is used to guide the tubers into the opening and the second side face prevent the tuber fall off from the stud.

主权项

1. A screw retaining mechanism, comprising:
a hollow stud having a plurality of elastic plates extending from a free end thereof and along a peripheral wall thereof; a nut matched with the hollow stud and an opening is located between two adjacent elastic plates; wherein an inner wall of the nut has a plurality of tubers protruding inwardly and extending in an axial direction thereof to match with the opening, said elastic plate defines a first side face used to guide the tubers into the opening and a second side face opposite to said first side face abutting against the tubers such that the tubers could rotate over the first side face in a first direction along the peripheral wall but could not rotate over the second side face in a second reverse direction opposite to the first direction.