JPS5932186Y2 - Starter lead wire outlet - Google Patents

Description

[Detailed description of the invention] The present invention relates to the lead wire marking structure of a starter. 6 Conventional shapes of the lead wire marking part include a rubber sleeve and a rubber bush integrated on the outer periphery of the lead wire, or
It is known that the sleeve and bushing are separate parts, as disclosed in Japanese Utility Model Publication No. 15-8005.

The former has excellent productivity, but when assembling it into the starter, the rubber bushing had to be crimped with the bracket and firmly fixed so that it would not move in the axial direction and the circumferential direction.

Therefore, it was necessary to select a rubber material with high hardness.

For this reason, the spreadability of the rubber sleeve is poor. This has the drawback that the radius of curvature increases when bent, and the length of the lead wire becomes longer than necessary even for a short distance.

On the other hand, the latter simply has a sleeve passed through a rubber bush, and is completely unsuitable for use under severe conditions such as a starter.

In other words, since the engagement between the two is surface contact and the clamping pressure is relatively loose considering press-fitting, there is a drawback that vibrations, thermal deterioration, etc. can easily form gaps, and water and dust can easily infiltrate. Ta.

An object of the present invention is to provide a starter lead wire marking structure with high airtightness.

An embodiment of the present invention will be explained with reference to the drawings.

In FIG. 1, a plurality of pole cores 2 are arranged and fixed on the inner peripheral surface of a yoke 1 of an electric motor, and act as a field core of the electric motor, and a field coil 3 is wound around the pole cores 2.

4 is a field coil outlet, 5 is a lead wire, and 6 is a terminal to which the lead wire 5 is connected by welding.

7 is a rubber sleeve with a collar formed at one end, and the material is low in hardness and has high malleability.

A lead wire connection portion 8 is welded to the field coil outlet portion 4.

Reference numeral 9 denotes a terminal crimping portion integrally formed with the terminal 6, which crimps and fixes the rubber sleeve 7 on the side opposite to the flange portion and the lead wire 5 at the same time.

Reference numeral 10 denotes an annular convex lip integrally formed on the outer periphery of the rubber sleeve 7, and its outer diameter is at least larger than the inner diameter of the rubber bushing 11 located on the outer periphery.

The rubber bush 11 is fitted into a hole formed at the boundary between the yoke 1 and the rear cover 12 to maintain airtightness between the yoke 1 and the rear cover 12 and to prevent the entire lead wire 5 from moving in the axial and circumferential directions. Made of hard rubber material.

In the above configuration, the rubber bushing 11 is fitted in advance onto the lead wire 5 covered with the rubber sleeve 7', one end is joined to the collar of the rubber sleeve, and the terminal 6 is fixed to the other end. The rubber bushing 11 of the product is fitted into the yoke, the field ridge portion 4 and the lead wire connection portion 8 are welded and fixed, and then the rear cover 12 is covered and tightened and fixed together.

In this state, the convex lip 10 of the rubber sleeve 7 is located exactly between the yoke 1 and the rear cover 12, and is pressed against the rubber bush 11.

Therefore, even if the structure is extremely simple to assemble, it is possible to prevent the rubber sleeve from being removed and to effectively improve airtightness.

The lead wire structure described above has no path for water or dust to enter, making it highly waterproof.

It has a dustproof function and has the effect of minimizing the length of the lead wire.

[Brief explanation of the drawing]

FIG. 1 shows a sectional view of the exposed portion of the lead wire of the starter according to the present invention. 1... Yoke, 2... Pole core, 3... Field coil, 4... Field coil sunrise part, 5...
・Lead wire, 6...Terminal, 7...Rubber sleeve, 8
...Lead wire connection part, 9...Terminal caulking part, 10...
・Convex lip, 11...Rubber bushing 12...Rear cover.

Claims (1)

[Claims for Utility Model Registration] In a starter having a structure in which the outlet end of the field coil is connected to a lead wire inside the starter and the lead wire is taken out to the outside of the starter via a rubber bushing, the outer periphery of the lead wire A rubber sleeve is formed to cover the body and has a collar at one end. The rubber bushing includes a rubber bushing that is held between the rear bracket and the yoke with one side facing the flange portion, and a convex lip that is integrally molded on the rubber sleeve and is located at a position where the rear bracket and the yoke face each other. Features a starter lead wire structure.