JPH04128060U - armature winding - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to obtain an armature winding in which the center of the coil is sufficiently impregnated with resin. [Structure] A groove 10 is formed in the bobbin 6 as a passage for resin,
By injecting resin into this groove 10, the resin is impregnated from the center of the coil 5 outward.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea also relates to an armature winding in which a coil is wound around the core via a bobbin. It is.

0002

[Conventional technology]

FIG. 7 is a plan view of a conventional magnet generator. In the figure, 1 is a crank of an internal combustion engine. A bowl-shaped flywheel having a fitting hole 1a into which a shaft is fitted; 2 is a flywheel; Consisting of a plurality of magnetic poles arranged along the inner peripheral surface of the core 1 and having alternately different polarities. This is a magnetic rotor. 3 is the core fixed to the internal combustion engine body with screw 4, 5 is the core 3 The coil is wound around the core 3, the coil 5, and the bobbin 6 through the bobbin 6. This constitutes the armature winding.

0003 In the above magnet generator, the flywheel 1 is rotated by the rotation of the crankshaft. Electric power is generated through electromagnetic induction between the rotating magnet rotor 2 and the armature winding. This current is then supplied to the fuel supply system, headlamp, audio, etc.

0004

[Problem that the idea aims to solve]

The armature winding used in conventional magnet generators can be prepared by dropping varnish on the coil 5. Alternatively, the coil 5 may be immersed in varnish to improve its mechanical strength, heat dissipation effect, and Although the edge effect is enhanced, the varnish impregnation does not reach the inside of the coil 5 and is The problem was that it was not possible to obtain the desired mechanical strength, heat dissipation, and insulation effect. .

[0005] This idea was made to solve the above problem, and the resin inside the coil The purpose is to obtain an armature winding that is sufficiently impregnated to the core.

[0006]

[Means to solve the problem] The armature winding according to this invention has grooves formed in the bobbin to serve as passages for the resin. be.

[0007]

[Effect]

In this design, the resin injected into the groove is directed outward from the center of the coil. impregnated with water.

[0008]

【Example】

Example 1 An embodiment of this invention will be described below with reference to the drawings. Figure 1 shows an example of this idea. A plan view of the armature winding with the coils removed. Figure 2 is along line II-II in Figure 1. 3 is a sectional view taken along line III-III in FIG. 1, and in the figure, 10 is a bobbin. A groove 11 is formed along the longitudinal direction in the coil portion 6a of the bobbin 6; This is a varnish injection port formed in 6b.

[0009] In Figures 4 to 6, varnish, which is a resin, is injected into the coil 5 of the armature winding. 12 is a varnish suction device that can be divided into two parts, and 13 is a varnish injector at the tip. A varnish injector 14 is attached to the spout 11 and a varnish injector 14 is attached to the side of the varnish sucker 12. This is the varnish suction part.

0010 In such an armature winding, the varnish is injected from the varnish inlet 11 in the collar 6b of the bobbin 6. The varnish is impregnated from the inside of the coil 5 outward through the groove 10, and the varnish is impregnated from the inside of the coil 5 to the outside. The varnish that has reached the outer surface of the tile 5 is sucked out from the varnish suction section 14.

[0011] Example 2 In the above embodiment, the varnish suction device 12 was used to shorten the impregnation time. The varnish sucker 12 is not necessarily required.

0012 Example 3 In addition, although the armature winding of the above embodiment functions as a generator, This idea can also be applied to armature windings that function as machines.

[0013]

[Effect of the idea]

As explained above, according to this invention, a groove is formed in the bobbin for the resin to pass through. As a result, the center of the coil is sufficiently impregnated with resin, providing sufficient mechanical strength and heat dissipation. This has the advantage that an armature winding having good insulation and insulation effects can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of an armature winding excluding a coil, showing an embodiment of this invention.

FIG. 2 is a sectional view taken along line II-II in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a plan view when varnish is being injected into the armature winding of FIG. 1;

FIG. 5 is a sectional view taken along line V-V in FIG. 4;

6 is a sectional view taken along the line VI-VI in FIG. 4. FIG.

FIG. 7 is a plan view of a magnet generator with a conventional armature winding.

[Explanation of symbols]

3 core 5 coil 6 bobbin 10 groove

Claims (1)

[Scope of utility model registration request] 1. In an armature winding in which a coil is wound around a core via a bobbin, a groove is formed in the bobbin to serve as a passage for resin, and the resin is injected into the groove to form a central portion of the coil. An armature winding characterized by being impregnated with resin from the outside outward.