JPS6133342B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a rotor for a magnet generator, which improves the work of attaching magnets to the magnet generator.

Conventional rotor structures are shown in FIGS. 1 and 2.
In the figure, 1 is a flywheel, 2 is a magnet, and 3 is a protective case for the magnet, and the magnet 2 and the protective case 3 for the magnet are integrated by press-fitting, molding, or the like. Further, 4 is a pole chip, and 5 is a magnet fixing screw.

Next, conventional magnet mounting work will be explained.
First, the magnet 2 integrated with the case 3 is set on the inner peripheral surface of the flywheel 1, and with the pole tip 4 pressed against the inner peripheral surface of the magnet, the pole tip is inserted from the outer peripheral side of the flywheel 1 with the screw 5. 4
It was fixed by fastening it to a female thread that was machined.
In this case, when attaching the magnet 2 to the flywheel 1, the number of parts that need to be supplied is the flywheel 1, the magnet 2 (including the case), the pole tip 4, and the screw 5, because there are many parts and types. ,
It is difficult to automate the work of attaching the magnet to the flywheel, and even when the work of attaching the magnet is done manually, there are drawbacks such as increased assembly time due to parts supply work and increased worker fatigue.

In view of the above drawbacks, this invention uses rivets for the magnet fixing member, and also integrates the magnet, case, pole tip, and rivet in advance before attaching the magnet to the flywheel. This paper proposes a novel method for manufacturing a rotor for a magnetic generator, which improves work efficiency and enables automatic installation.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows a side sectional view of a rotor showing one embodiment of the present invention. In the figure, 6 is a rivet for fixing the magnet, and as shown in FIGS. 4 and 5, this rivet 6 is penetrated from the pole tip 4 side and inserted into the rivet through hole 3a provided in the case 3'. insert. By doing this, the magnet 2 is integrated with the case 3' by press fitting or molding, and since the case 3' and the pole tip 4' are integrated by the head of the rivet 6, the magnet 2 and the case 3' are integrated. ' and the pole tip 4' are previously integrated by a rivet 6.
The pole tip 4' is provided with a slot 4'a for storing the rivet head so that the head of the rivet 6 does not protrude.

Therefore, when attaching the magnet 2 to the flywheel 1, the number of parts that need to be supplied is the same as that of the flywheel 1.
Only two parts are required: and the above-mentioned integrated magnet assembly, which makes it possible to reduce assembly time and assembly worker fatigue by reducing part supply work, and furthermore, it is possible to automate the work of attaching the magnet to the flywheel 1. This is the result. Furthermore, the pole tip 4' which is a metal body
Since the rivet 6 and the flywheel 1 are engaged with each other by the rivet 6, which is generally made of metal, a sufficiently high mounting strength can be obtained.

In addition, when integrating the magnet 2, case 3', and pole tip 4 with the rivet 6 before installation to the flywheel 1, the rivet through hole 3'a of the case 3' shown in FIG. By doing this, the rivet is strongly held to the case 3', so that the parts are completely held together when they are integrated, and the integrated magnets and other parts are transported until they are attached to the flywheel 1. The work of attaching the magnet 3 to the flywheel 1 becomes even more reliable without coming off during the process.

In addition, in FIGS. 4 and 5, the tip of the rivet 6 is shaped to protrude toward the outer circumference of the magnet 2, but the tip of the rivet 6 does not protrude to the outer circumference of the magnet 2, but is roughly aligned with the outer circumference of the magnet 2. If the insertion is stopped at the same size, the workability when assembling to the flywheel 1 is further improved. Further, this effect is the same even when the rivet is applied to only one of the rivets 6.

As described above, according to the present invention, before the work of attaching the magnet to the flywheel, the magnet and the pole chip are stored in the case, the head of the magnet fixing rivet is brought into contact with the pole chip, and the rod-shaped part of the rivet is brought into contact with the pole chip. The magnet, the case, and the pole chip are pre-integrated with the rivet by passing through the pole chip and the magnet and press-fitting them into the rivet through hole provided in the case so as to protrude, thereby greatly increasing the workability of installing the magnet. has been greatly improved,
Furthermore, it is possible to automate the magnet attachment work. Furthermore, by press-fitting the rivet into the rivet through hole of the case, each part is completely fixed, making the device even more effective. Additionally, since rivets are generally made of hard metal and are separate from the case, they have high strength when attached to the flywheel.

In addition, since the head of the rivet is buried and abutted on the conical slot 4'a of the pole chip so that it does not protrude beyond the pole chip surface, the magnetic flux generated during the operation of the generator does not concentrate on the rivet. Since it passes uniformly through the magnetic pole surface of the pole chip, the output characteristics of the generator are not deteriorated, and good power generation characteristics can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a magnet generator rotor showing a conventional magnet mounting method, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a plan view of a magnet generator rotor showing an embodiment of the present invention. FIG. 4 is a magnet assembly plan view showing an embodiment of the present invention; FIG. 5 is a sectional view taken along FIG. 4; and FIG. 6 is a case plane. 7 is a sectional view taken along the line of FIG. 6. In the figure, 1 is the flywheel, 2 is the magnet, 3, 3'
is the case, 4, 4' are the pole tips, 5 is the screw,
6 is a rivet, 4'a is a hole for storing the rivet head, and 3'a is a hole for passing the rivet through. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A ferrite magnet and a pole chip are housed in a case made of non-magnetic material, and the head of the magnet fixing rivet and the part of the pole chip that comes into contact with the rivet head are shaped like a cone, and the rivet head protrudes from the surface of the pole chip. At the same time, the rod-shaped part of the rivet is inserted into the pole chip and the magnet so that it is buried in the conical part of the pole chip so that it does not come into contact with the pole chip, and is press-fitted so that it protrudes into the rivet through hole provided in the case. By doing this, the magnet, case and pole tip are integrated in advance,
A method for manufacturing a rotor for a magnet generator, characterized in that the rotor is installed inside a flywheel.