Assembly fixture of starter motor built-in electromagnetic switch

Abstract

The invention discloses an assembling fixture of a starter motor built-in electromagnetic switch. The assembling fixture comprises an upper plate provided with a centering center shaft, a middle plate provided with a first positioning structure and a second positioning structure, a lower plate provided with a flaring column, guide pillars and a supporting elastic piece for supporting the middle plate, wherein the upper plate and the middle plate are connected onto the guide pillars in a sliding manner; the flaring column is positioned below the first positioning structure, and corresponds to a connecting opening and a connecting lug; the centering center shaft is positioned in a guide tube, and an electromagnetic switch assembly clings to a starter motor shell when the upper plate moves downwards. Integral riveting of the electromagnetic switch assembly and the starter motor shell is realized while each component of the electromagnetic switch assembly is positioned through a plate capable of moving up and down; and the integral riveting problem of the starter motor built-in electromagnetic switch is solved, so that the riveting efficiency and the connecting reliability and positional accuracy of the electromagnetic switch assembly and the starter motor shell are improved.

Description

technical field [0001] The invention relates to a processing device and method for an electromagnetic switch of a starter motor, in particular to an assembly tool for a built-in electromagnetic switch of a starter motor. Background technique [0002] The starter motor is an important part of the car, its function is to start the car engine. The starter motor is powered by the battery, and is controlled by an electromagnetic switch to convert electrical energy into mechanical energy to output power. The one-way clutch makes the engine run from a standstill until the engine is ignited and runs normally. In the prior art, the electromagnetic switch of the starter motor is an independent integral part, which is installed on the front cover or the middle cover of the starter motor with screws, and the fork is pulled by the hook on the moving core machine assembly in the electromagnetic switch to make it The starter motor freewheel assembly moves. For example, the Chinese invent...

AI Technical Summary

Problems solved by technology

However, after processing the coil assembly, base plate, bracket and guide pipe and other accessories into an integral independent switch assembly, and then fixing it on the starter motor housing through the screw holes on the base plate with screws, there will not only be space and structure limitations , and at the same time, due to multiple positioning, it is difficult to guarantee the position accuracy, which affects the technical problems of the movement performance of the ejector pin driven by the moving core machine

In order to process the switch assembly into a reliable whole, various methods, such as argon welding process, riveting process and spot welding process for the switch assembly independently, are easy to cause damage to the insulation performance of the coil, or cause surface galvanized layer Burn flaws, or poor reliability after riveting due to the strength of the bracket and the bottom plate material, it is difficult to achieve

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