Patent ID: 10050370

Abstract:
A cover unit (50) includes a plug holder (60) mounted on a cover (51). A rubber plug (80) is attached to the plug holder (60) and closes an opening (30) of a device (C). The rubber plug (80) includes a cylindrical body (81) to fit in the opening (30). A mounting tongue (87) extending from a base of the body (81) via a coupling (85) and has a locking hole (89). The plug holder (60) includes an insertion hole (75) allowing the mounting tongue (87) of the rubber plug (80) to be inserted on a side opposite to the plug body (81). A hook (67) engages the locking hole (89) of the mounting tongue (87) inserted into the insertion hole (75). The mounting tongue (87) of the rubber plug (80) is thicker than the coupling (85).