| 摘要 |
A jack has a body of insulating synthetic resin having a bore for the insertion and removal of a plug, the body housing a contact member having a movable portion. When the plug is inserted through the bore into the body, the movable portion of the contact member is engaged by the plug for resilient contact therewith. A resilient projection extends integrally from the body and is disposed between the back of the movable portion of the contact member and an inner wall surface of the body. When the movable portion of the contact member is displaced in response to insertion of the plug, the movable portion is brought into resilient contact with the resilient projection which then strengthens the resiliency of the contact member. |
