Parking lock device

摘要

A parking lock device that is installed in a transmission of a vehicle includes a gear, a lock, a receiver, a cam, and a damper. The lock has a pawl that can be engaged in a tooth space between the teeth of the gear. The lock moves between an engagement position at which the pawl is engaged in the tooth space to lock the gear and a retreat position at which the pawl is not engaged in the tooth space. The receiver is arranged to be fixed to a case of the transmission. The cam moves forward and backward with respect to a gap between the receiver and the lock. The cam holds the lock at the engagement position when having entered the gap. The damper is provided in a vibration transmission path to dampen vibrations transmitted to the case of the transmission.

主权项

1. A parking lock device that is installed in a case of a transmission of a vehicle, the parking lock device comprising:
a gear including a plurality of teeth arranged in a circumferential direction of the gear, a tooth space being defined between the plurality of teeth; a lock including a pawl to be engaged in the tooth space, the lock moveable between an engagement position and a retreat position, in the engagement position the pawl is engaged in the tooth space to lock the gear and in the retreat position the pawl is not engaged in the tooth space; a receiver fixed to the case of the transmission; a cam moveable into and out of a gap defined between the receiver and the lock, the cam holding the lock in the engagement position when having entered into the gap; and a damper provided on the receiver, the damper dampens vibrations that are generated when the gear and the lock come into contact with each other, the damper provided on a vibration transmission path that transmits the generated vibrations to the case of the transmission, the vibration transmission path formed of the lock, the cam, and the receiver, wherein the damper is a weight formed at an end of an arm portion that extends from the receiver.