Flexibly-meshed second-order driving starter

Abstract

The invention discloses a flexibly-meshed second-order driving starter which comprises a motor, an operating mechanism and a transmission mechanism, wherein the transmission mechanism comprises a shifting fork, an isolator, a meshing spring and a drive gear, one end of the shifting fork is arranged at the front end of a movable iron core, one end of the isolator is connected with the motor, the meshing spring is arranged on the isolator and matched with the other end of the shifting fork, and the other end of the isolator is provided with the drive gear. According to the invention, the gear processing time is shortened, and the heating time of an electromagnetic switch coil is reduced, thereby preventing the coil from being burnt out; a fault that the coil is damaged through burning or a commutator is indirectly thrown away because the gear and a flywheel ring gear are mutually deadlocked is avoided; the meshing spring is large in pressure and long in fatigue life, and does not have a gear milling phenomenon; the structure is simple, the manufacturability is easy to implement, and typical faults of the existing heavy truck starters are effectively eliminated; and the increase amplitude of cost is very small, and the influence of the increase amplitude of cost on the total price of products almost can be negligible, thereby reducing the late-stage after-sale cost and improving benefits.

Description

technical field [0001] The invention relates to the field of starters used in heavy-duty trucks, in particular to a soft-engagement two-stage drive starter equipped with an engagement spring. Background technique [0002] At present, the starters used in heavy trucks are as follows: [0003] For a basic forced-engagement starter, when the truck key is turned to the "Start" gear, the on-board relay is turned on, the starter electromagnetic switch terminal 50 is energized, its main contact is turned on, and its magnetic pull drives the engagement spring on the one-way device. Make it mesh with the ring gear of the engine forcibly, and at the same time, the battery outputs full-load electric energy to the motor part of the starter through the main contact of the electromagnetic switch. Such as bosch early products. [0004] The improvement carried out on the basis of the above-mentioned basic forced-engagement type starter is that the engagement spring on the one-way device i...

AI Technical Summary

Problems solved by technology

[0016] In order to solve the above-mentioned technical problems, the present invention provides a flexible meshing second-stage drive starter equipped with meshing springs, which does not cause top teeth, milling teeth, and driving gears to be locked by the flywheel ring gear and cannot be returned.

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