Seat slide apparatus

摘要

A seat slide apparatus (5) includes: a lock plate (40) axially attached to a side surface of an upper rail (30) of which a portion near a base portion is axially attached in a freely rotatable manner; a lock hole (42) formed in a lower portion close to a free end of the lock plate; and a lock spring (50) engaging the lock hole with a lock tooth (22) of a lower rail (20) by using an urging force. In the construction, the engagement of the lock hole with a lock tooth prevents a seat main body mounted to the upper rail from moving in a longitudinal direction and canceling the engagement makes the seat main body freely move in the longitudinal direction. A lock plate guiding long hole (31) is formed in the upper rail. A lock spring locking means (43) is provided on the lock plate at a portion corresponding to the lock plate guiding long hole in such a manner that the lock spring locking means (43) is inserted into the lock plate guiding long hole (31) and projects from the lock plate guiding long hole so as to lock the lock spring (50). Furthermore, a lock plate holding means (60) is provided at a position corresponding to the free end portion of the lock plate in such a manner as to slidably hold the free end side of the lock plate (40). <IMAGE>