Parking mechanism for automatic transmission

Abstract

The invention relates to a parking mechanism for an automatic transmission. The parking mechanism comprises a parking ratchet wheel connected with an output shaft, a parking pawl meshed with the parking ratchet wheel and an execution pin driving the parking pawl to enable the parking pawl to be meshed with the parking ratchet wheel. The parking mechanism further comprises a guide plate and a parking base. A parking floor board is removed from the parking mechanism, each part is directly installed on a transmission casing, meanwhile, a novel structure and a connection mechanism are adopted, and movement in fives gears including P,R,N,D and S of a parking system is achieved. The parking mechanism has the advantages of being reasonable in structure of the parking system, simple in process and convenient to assemble, and the requirements for peripheral design are reduced.

Description

technical field [0001] The invention belongs to the technical field of automobiles, in particular to a parking mechanism for an automatic transmission. Background technique [0002] In the disclosed automatic transmission parking mechanism, there are the following problems: [0003] First of all, the parking system is integrated except for the parking ratchet, which requires the addition of a parking floor to support all parts of the parking system. The number of parts increases and the riveting process increases; [0004] Secondly, the structure of the parking system is designed without making full use of the characteristic that the push rod assembly is swinging rather than rotating, and the system structure is unreasonable; [0005] Third, the parking system only moves between the P and R gears, which requires a more refined shift handle structure, resulting in higher input requirements for the parking system; [0006] Fourth, the current parking system uses a positionin...

AI Technical Summary

Problems solved by technology

[0003] First of all, except for the parking ratchet, the parking system is all integrated together, which requires the addition of a parking floor to support all parts of the parking system, the number of parts increases, and the riveting process increases;

[0004] Secondly, the structure of the parking system is designed without making full use of the characteristic that the push rod assembly is swinging rather than rotating, and the system structure is unreasonable;

[0005] Third, the parking system only moves between the P and R gears, which requires a more refined shift handle structure, resulting in higher input requirements for the parking system;

[0006] Fourth, the current parking system uses a positioning rail plate hinged push rod. This structure causes not only axial displacement but also radial displacement of the positioning plate and push rod during the pulling process, which affects the stability of the gear position.

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