Connector with locking lance and terminal fitting with deflection regulating portion for regulating deflection of the locking lance

摘要

A connector includes a pressure receiving surface (16) on a front of a locking lance (12) and a lock (36) on a terminal (30) is configured to lock the pressure receiving surface (16). An inclined surface (15) on a facing surface (13) of the locking lance (12) faces the terminal (30) and is inclined to be more separated from the terminal fitting (30) toward the back. A guiding surface (18) on the pressure receiving surface (16) is configured to deflect the locking lance (12) toward the terminal (30) when the lock (36) presses the pressure receiving surface (16). A contact surface (21) behind the pressure receiving surface (16) on the locking lance (12) faces the terminal (30). A deflection regulating portion (38) behind the lock (36) on the terminal (30) faces the contact surface (21) while being spaced apart parallel to a resilient deflecting direction of the locking lance (12).

主权项

1. A connector, comprising:
a housing with opposite front and rear ends and internally formed with a terminal accommodating chamber; a terminal fitting to be inserted into the terminal accommodating chamber from behind and along an inserting direction, a rearward facing locking portion formed on the terminal fitting, and a deflection regulating portion formed at a position on the terminal fitting behind the locking portion; a locking lance made of synthetic resin and cantilevered forward along an inner wall of the terminal accommodating chamber, the locking lance being configured to be contacted by the terminal fitting when inserting the terminal fitting into the terminal accommodating chamber so that the locking lance is deflected resiliently in a resilient deflecting direction intersecting the inserting direction, the locking lance further being configured to return resiliently to a free state when the terminal fitting is inserted properly into the terminal accommodating chamber, the locking lance including:
a pressure receiving surface formed on a front end surface of the locking lance and configured to retain the terminal fitting by locking the locking portion of the terminal fitting from behind;an inclined surface formed on a facing surface of the locking lance facing the terminal fitting and inclined to be more separated from the terminal fitting toward back;a contact surface formed at a position of the locking lance behind the pressure receiving surface and facing the terminal fitting; anda stopper configured to regulate a backward relative displacement of the terminal fitting with respect to the locking lance by contacting the deflection regulating portion with the stopper from the front when the locking portion bites into the pressure receiving surface; and the connector further comprising: a guiding surface formed on at least one of the pressure receiving surface and the locking portion and configured to deflect the locking lance in a direction toward the terminal fitting when the locking portion presses the pressure receiving surface, wherein the deflection regulating portion is configured to face the contact surface while being spaced apart in a direction substantially parallel to a resilient deflecting direction of the locking lance when the locking lance is in the free state free from resilient deflection.