PARKING LOCK DEVICE

• Main Authors: TAKAHASHI NOBUAKI, YASUNAKA SATOSHI
• Format: Patent
• Language: English
• Published: 16.09.2010
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To suppress any tooth skipping phenomenon of a parking gear occurring when a vehicle is on slope or the like in a parking lock device of the vehicle. SOLUTION: A parking lock device has a parking pole 18 which is engaged with a parking gear to lock it. The parking pole 18 is pressed by a cam 22, and moved to the engagement position to be engaged with the parking gear from the evacuation position. An oil discharging groove 44 is formed in a surface of the cam 22. When the parking pole is subjected to an impact force from the parking gear, oil between contact surfaces of the parking pole and the parking gear is rapidly discharged through the oil discharging groove. Thus, the squeeze effect that the friction is reduced by the oil remaining between the contact surfaces is suppressed, and the parking pole 18 is reliably held at the engagement position. COPYRIGHT: (C)2010,JPO&INPIT