| 摘要 |
A side wall portion of a housing is provided with an arm-protective extending portion below a pawl and a mechanical arm. The arm-protective extending portion extends inwardly at a substantially right angle. Further, a side wall portion of the housing is provided with a shaft-protective extending portion which extends inwardly from the lower edge portion of a horizontally long opening portion. The horizontally long opening portion is formed so as to face a coupling shaft over its full length. Below this shaft-protective extending portion, there is formed a bolt insertion hole through which a bolt is inserted at the time of mounting the housing to a fastening piece of a vehicle. |
