Gearbox and automatic parking executing device thereof

Abstract

The invention provides a gearbox and an automatic parking executing device thereof. The automatic parking executing device comprises a parking gear, a parking pawl, a parking executing rod, an automatic parking driving mechanism and a manual P-gear unlocking mechanism. When the parking pawl is clamped in a gear groove of the parking gear, P-gear parking is achieved; and the parking executing rod can move in a reciprocating manner so as to drive the parking pawl to be engaged into or disengaged from the P gear. The automatic parking driving mechanism drives the parking executing rod to automatically move in a reciprocating manner. The manual P-gear unlocking mechanism can drive the parking executing rod to move in a reciprocating manner. When a vehicle cannot be started or a gearbox breaksdown, the manual P-gear unlocking mechanism can be operated to drive the parking executing rod to move in the direction of being engaging into the P gear so that the parking pawl can be clamped into the gear groove of the parking gear, the parking pawl can still be engaged into the P gear, and therefore safety is improved. When the vehicle is locked in the P-gear state, the manual P-gear unlockingmechanism can also be operated to drive the parking executing rod to move in the direction of being disengaged from the P gear, the parking pawl can disengage from the gear groove of the parking gear, P gear unlocking is achieved, and then the vehicle can be moved for maintenance conveniently.

Description

technical field [0001] The invention relates to the technical field of auto parts, more specifically, to a gearbox and an automatic parking execution device thereof. Background technique [0002] The parking system is an important part of automatic transmissions, and is commonly used in automatic transmissions such as AT transmissions, CVT transmissions, and dual-clutch transmissions; Engage and lock the rotation of gearbox gears, axle shafts and tires to prevent the vehicle from rolling. [0003] The existing automatic parking methods are divided into two types. The first is to use the motor as kinetic energy, and realize the switching between P gear and non-P gear by driving the shift shaft through the motor and the corresponding reduction gear. The second type is a hydraulically driven parking actuator, which uses the hydraulic fluid provided inside the gearbox as power, and realizes the switch between P and non-P gears by pushing the hydraulic piston. [0004] However,...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned automatic parking methods are all automatically mounted into and out of the P gear through power drive. When the vehicle cannot be started or the gearbox fails, it cannot be mounted into the P gear or out of the P gear, especially when the vehicle is locked in the P gear after a failure. , unable to move the vehicle, inconvenient for maintenance

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