A locking mechanism for a P-speed hydraulic parking actuator of an automobile gearbox and reducer

A technology of automobile gearbox and locking mechanism, which is applied in the direction of mechanical equipment, components with teeth, transmission device control, etc., can solve the problems of slow action response speed and complex structure form, achieve fast response speed, and simple design structure , the effect of high action sensitivity

Active Publication Date: 2021-09-03
SUZHOU DONGFENG FINEBLANKING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technical solution can better realize the parking function, its structure is relatively complicated, and the realization of the parking function is realized by means of multi-stage springs, so its action response speed is relatively slow

Method used

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  • A locking mechanism for a P-speed hydraulic parking actuator of an automobile gearbox and reducer
  • A locking mechanism for a P-speed hydraulic parking actuator of an automobile gearbox and reducer
  • A locking mechanism for a P-speed hydraulic parking actuator of an automobile gearbox and reducer

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Embodiment Construction

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0032] figure 2 , image 3 The three-dimensional schematic view and the top view of the hydraulic parking system in the present invention are respectively shown, which are mainly composed of a hydraulic cylinder 1, a parking cam (not shown in the figure) and a locking mechanism 2. Among them, the hydraulic cylinder 1 Including hydraulic cylinder 11, piston rod 12 and piston 13 (...

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Abstract

The invention relates to a locking mechanism of a P gear hydraulic parking actuator of an automobile gearbox and a reducer, which includes a limit seat, a lock sleeve placed in the cavity of the limit seat, a pushing sleeve and a connecting screw. The connecting screw is used to realize the connection between the push shaft sleeve and the piston rod. Driven by the single-direction force of the piston rod, the push sleeve can move in two directions along the axial direction, and realize the switching and position limiting of the two functional positions of the hydraulic parking device. With the assistance of the locking sleeve, every time the push shaft sleeve goes through a cycle of up and down movement, it rotates at a certain angle relative to its own central axis to realize its locking or unlocking with the limit seat. At the same time, the hydraulic parking system The parking cam and the parking arm are correspondingly in contact or disengagement state. In this way, the design structure is very simple, and the parking or parking can be realized by adjusting and changing the matching state of the push bush relative to the limit seat. non-parking purposes.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a locking mechanism for a P-range hydraulic parking actuator of an automobile gearbox and a speed reducer. Background technique [0002] An automatic transmission is a car transmission that can automatically change the gear ratio while the vehicle is running. In order to ensure the safety of the car during coasting, a parking system is generally installed in the automatic transmission to ensure that the car can be parked at a certain position or even on a steep slope without a time limit. [0003] At present, the common parking system is a hydraulic parking system. Chinese invention patent CN106641242A discloses a hydraulic parking push rod assembly (such as figure 1 shown in ), which includes a hydraulic cylinder with first and second oil holes, in which a piston body and a hydraulic joint are arranged to divide the hydraulic cylinder into first and second sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/34
CPCF16H63/3483
Inventor 张敏伍超军
Owner SUZHOU DONGFENG FINEBLANKING ENG
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