Parking device for vehicle

• US 20050223762A1
• Filed: 05/25/2004
• Published: 10/13/2005
• Est. Priority Date: 05/28/2003
• Status: Active Grant

• Current Assignee: Isuzu Motors Limited
• Original Assignee: Isuzu Motors Limited
• Inventors: Yamamoto, Yasushi
• Granted Patent: US 7,156,218 B2
• Time in Patent Office: Days
• US Class Current: 70/189
• CPC Class Codes: B60T 1/005 by locking of wheel or transmission rotation
• CPC Class Codes: B60T 1/062 acting on transmission parts
• CPC Class Codes: F16H 63/3416 Parking lock mechanisms or brakes in the transmission
• CPC Class Codes: F16H 63/3466 using electric motors
• CPC Class Codes: F16H 63/48 Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
• CPC Class Codes: Y10T 70/5677 Shaft-carried clutch
• CPC Class Codes: Y10T 74/19251 Control mechanism
• CPC Class Codes: Y10T 74/19637 with brake means for gearing

Abstract

A parking device for vehicles in which when an engine is brought into a halt, a clutch is disconnected and the revolution of an input shaft of a transmission cannot be controlled by frictional force of the engine, the parking device comprising a parking gear provided on the input shaft, a parking lock mechanism which selectively engages with the parking gear, a parking actuator for actuating the parking lock mechanism, a parking instruction means for instructing the parking, a speed-change actuator for shifting the transmission to each gear, and a control means. The control means operates the speed-change actuator based on a signal from the parking instruction means to bring the transmission into engagement with a predetermined gear position and, thereafter, operates the parking actuator to bring the parking lock mechanism into engagement with the parking gear.

Claims

1. A parking device for vehicles in which when an engine is brought into a halt, a clutch is disconnected and the revolution of an input shaft of a transmission cannot be controlled by frictional force of the engine, said parking device comprising a parking gear provided on said input shaft, a parking lock mechanism which selectively engages with said parking gear, a parking actuator for actuating said parking lock mechanism, a parking instruction means for instructing the parking, and a speed-change actuator for shifting the transmission to each gear;

wherein

the parking device further comprises a control means for operating said parking actuator and said speed-change actuator based on a signal from said parking instruction means; and

said control means operates said speed-change actuator based on a signal from the parking instruction means to bring the transmission into engagement with a predetermined gear position and, thereafter, operates said parking actuator to bring said parking lock mechanism into engagement with said parking gear.