Dustproof oil-blocking structure of starter

Abstract

The invention provides a dustproof oil-blocking structure of a starter in the technical field of automobile starters. A dustproof oil-blocking plate (2) of the dustproof oil-blocking structure of thestarter is provided with a through hole (3); a rotor armature shaft (1) penetrates through the through hole (3); the edge part of the through hole (3) is provided with a wrinkle part (4) along the periphery of the edge part of the through hole (3); the rotor armature shaft (1) is provided with an armature shaft groove (5) recessed along the periphery of the rotor armature shaft (1); the wrinkle part (4) is arranged to be of a structure with an n-shaped cross section; and a wrinkle part corner part (6) of the wrinkle part (4) is arranged to be of a structure capable of extending into the armature shaft groove (5). The dustproof oil-blocking structure of the starter is simple in structure; an anti-leakage labyrinth is formed by improving the structures of the dustproof oil-blocking plate andthe rotor armature shaft and improving the connection arrangement relation between the dustproof oil-blocking plate and the rotor armature shaft, so that assembling is convenient, substances in the two cabins can be prevented from permeating each other, the service life of a speed reducer is prolonged, and the NVH performance is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile starters, and more specifically relates to a starter dust-proof and oil-retaining structure. Background technique [0002] In the automobile starter, the motor and the deceleration mechanism are divided into two compartments by the dust-proof oil baffle (definition compartment 1 is the motor compartment, and compartment 2 is the deceleration mechanism compartment). In the motor compartment, due to the contact between the rotor commutator and the brush, Toner will be produced due to work; the deceleration mechanism cabin is a deceleration mechanism, so there will be lubricating grease. In the prior art, the dust-proof oil baffle is just a simple circular plate, and the dust-proof oil baffle and the armature shaft of the rotor are also just a simple set assembly. Therefore, it is impossible to prevent the carbon powder and lubricating grease from penetrating into another compartment. Inside. Th...

AI Technical Summary

Problems solved by technology

In the prior art, the dust-proof oil baffle is just a simple circular plate, and the dust-proof oil baffle and the armature shaft of the rotor are also just a simple set assembly. Therefore, it is impossible to prevent the carbon powder and lubricating grease from penetrating into another compartment. Inside

This affects the reliable use of the starter, resulting in not only poor lubrication but also affecting the NVH performance of the reducer after a period of use

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