JPH04121380U - magnet generator - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the magnet generator of this invention is to efficiently cool the generating coil. [Structure] A bowl-shaped flywheel 1, a plurality of magnets 2 provided on the inner peripheral surface of the flywheel 1, a power generating coil arranged inside the flywheel 1, and a power generating coil arranged inside the flywheel 1. It is provided with fins 14 arranged therein for cooling the power generating coil.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a magnet generator, particularly a flywheel type magnet generator. It is something.

0002

[Conventional technology]

Figure 3 is a plan cross-sectional view showing an example of a conventional magnet generator, and Figure 4 is taken along line IV-IV in Figure 3. FIG. In the figure, 1 is a crank protruding from the engine body (not shown) A bowl-shaped flywheel made of a magnetic material fixed to a boss 5 attached to the shaft, 1a is a protrusion extruded on the inner peripheral side of the flywheel 1, and 1b is a flywheel. Steps are extruded on the inner circumference at several points around the entire circumference of the flywheel 1, and 2 is the inner circumference of the flywheel 1. a plurality of magnets provided along the surface and positioned in the axial direction by the stepped portion 1b; 3 is a cylindrical magnet protection part fitted inside the magnet 2, and 3a is one end of the magnet protection part 3. The magnet 2 is attached to the flywheel by the bent flange 3a and the step 1b. It is positioned with respect to the axial direction of the lever 1. 4 is between the magnets 2 and between the magnets 2. This is the mold material that covers the top surface.

0003 In the above magnet generator, the flywheel 1 is rotated by the rotation of the crankshaft. A rotating magnet 2 and a power generating coil (not shown) disposed inside the flywheel 1 Generates electricity through electromagnetic induction with

0004

[Problem that the idea aims to solve]

In conventional magnet generators, the generating coil, which generates heat due to iron loss, is efficiently cooled down. There was a problem with not being rejected.

[0005] This idea was made in order to solve the above problem, and it is possible to efficiently use power generation coils. The objective is to obtain a magnet generator in which the magnet is cooled.

[Means to solve the problem] The magnet generator according to this invention cools the generating coil on the inner circumference of the flywheel. It is equipped with fins for this purpose.

[0006]

[Effect]

In this design, electricity is generated inside the flywheel by the rotation of the flywheel. A cooling flow is created towards the coil.

[0007]

【Example】

An embodiment of this invention will be described below with reference to the drawings. Figure 1 shows an example of this idea. FIG. 2 is a cross-sectional view taken along line II-II in FIG. A plurality of fins 14 integral with the mold material covering the top surface of the magnet 2 are fried at equal intervals. It differs from the conventional one shown in Figs. 3 and 4 in that it is disposed on the underside of the wheel 1. By the way.

[0008] In such a magnet generator, the fins 14 generate electricity as the flywheel 1 rotates. Since the cooling flow is generated towards the generator coil, the generator coil automatically cools down efficiently. Rejected.

[0009] Note that this device is based on the diagram of Utility Model Application Publication No. 13070/1983, which the applicant has already filed. It can also be applied to the engine-driven generators shown in Figures 1 and 3; The existing filter on the outside of the flywheel is installed inside the bowl-shaped flywheel. A fin is provided integrally with the fin.

0010

[Effect of the idea]

As explained above, according to the magnet generator of this invention, the inner circumference of the flywheel Since fins are installed to cool the generating coil, the rotation of the flywheel is A cooling flow is generated within the flywheel toward the generator coil, and the generator coil becomes less effective. It has the effect of cooling efficiently.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view showing an embodiment of this invention.

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

FIG. 3 is a cross-sectional plan view showing an example of a conventional magnet generator.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

1 Flywheel 2 magnet 14 Fin

Claims (1)

[Scope of utility model registration request] 1. A bowl-shaped flywheel, a plurality of magnets provided on the inner circumferential surface of the flywheel, and a magnet disposed in the flywheel opposite to the magnets. What is claimed is: 1. A magnet generator comprising a power generating coil that generates electricity, characterized in that fins for cooling the power generating coil are disposed on an inner periphery of the flywheel.