| 摘要 |
Provided are a main body ( 10 ) having a first cord insertion hole ( 11 ); an operating body ( 20 ) including an accommodated portion ( 20 A) that can be accommodated in the main body ( 10 ) and a second cord insertion hole ( 21 ) that is provided to the accommodated portion ( 20 A) and can communicate with the first cord insertion hole ( 11 ); and an elastic body ( 30 ) biasing the operating body ( 20 ) in a direction in which the first cord insertion hole ( 11 ) is displaced from the second cord insertion hole ( 21 ) and in a direction in which the operating body ( 20 ) is protruding from the main body ( 10 ), the elastic body ( 30 ) connecting the main body ( 10 ) and the operating body ( 20 ). An elastically deformable portion ( 26 ) is provided to at least one of the accommodated portion ( 20 A) and the main body ( 10 ). The elastically deformable portion ( 26 ) is connected to the elastic body ( 30 ) and is elastically deformed at the same time when the elastic body ( 30 ) is elastically deformed.
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