JPS6019510Y2 - Magnet generator for internal combustion engine - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improved structure of a magnet generator for an internal combustion engine.

[Conventional technology]

The conventional method, as shown in Japanese Patent Publication No. 30-3711, involves interposing a collar between the iron cores, inserting mounting screws into the mounting holes of the iron core and the mounting holes of the collar, and attaching them to the base or engine case. It was fixed.

Furthermore, as shown in Japanese Patent Application Laid-open No. 51-53204, there is a device in which the cores are fitted in a convex-concave manner in order to position the cores.

[Problem that the invention attempts to solve]

However, in the conventional method described above, it is necessary to position the upper and lower cores when defining the upper and lower cores with mounting screws by interposing collars between the cores, and for this positioning, the collars and When positioning is performed by providing unevenness on the core and fitting the unevenness, it is necessary to provide a protrusion on the collar and provide another hole on the core that fits into this protrusion, and also to pass the mounting screw. It is necessary to reduce the manufacturing error between the positional relationship between the mounting hole and the positional relationship between the collar screw mounting hole and the protrusion, which makes manufacturing difficult.

Therefore, an object of the present invention is to make it possible to easily position each core without forming holes in the core other than holes for attaching screws.

[Means for solving problems]

In a magnet generator for an internal combustion engine in which each generating coil is wound around a separate iron core, a collar is interposed between each of the iron cores stacked one above the other, and each iron core is fixed with a screw, the mounting hole of the collar is fixed. An annular protrusion formed on the periphery and fitted into a mounting hole provided in each core constitutes a positioning part in the radial direction, and positioning in the thrust direction is performed by bringing both end surfaces of the collar into contact with each core. The present invention provides a magnet generator for an internal combustion engine, characterized in that:

〔Example〕

The present invention will be described below with reference to embodiments shown in the drawings.

1 to 4, 1 and 2 are iron cores, 3.4 are power generation coils wound around each iron core 1 and 2, 5 is a base or engine case, and 6 is a collar made of sintered metal or synthetic resin 7 is the mounting screw, 8゜9 is the core side plate, 1a
are mounting holes provided at both ends of the iron core 1.

A mounting hole 6a is formed on the inner circumference of the collar 6.
Annular protrusions 6c and 6 are provided around the mounting hole 6a, respectively.
d, and the end face 6e of the collar 6 is also formed.

The annular protrusions 6c and 6d of the collar 6 are fitted into the mounting holes 1a provided at both ends of the cores 1 and 2, respectively, and the cores 1 and 2 are stacked one above the other with the collar 6 in between.

Then, the annular protrusions 6c and 6d of the two collars 6 perform positioning in the radial direction.

Also, one annular protrusion 6c of the collar 6 is attached to the upper iron core 1.
By caulking and fixing, the collar 6 and the iron core 1 are integrated in advance as shown in FIG.
The other annular protrusion 6c passes through a mounting hole in the lower iron core 2 and fits into a mounting hole in the base or engine case 5, and is attached to the base or engine case 5 with mounting screws 7. .

Further, the positioning of each core 1 and 2 in the thrust direction is performed by bringing the end surface 6e of the collar 6 into contact with each core 1 and 2.

Therefore, by fitting the annular protrusions 6c and 6d formed around the mounting hole 6a of the collar 6 into the mounting holes 1a of the cores 1 and 2, which are already provided, the radial direction of the upper and lower cores 1 and 2 can be adjusted. Therefore, there is no need to provide any holes other than the mounting holes for the iron cores 1 and 2, and since the mounting holes for the iron cores 1 and 2 are used for positioning the iron cores, the positioning can be performed accurately.

Further, since the annular protrusion 6c of the upper iron core 1 and one of the collars 6 are caulked and fixed, it becomes easier to assemble the iron cores 1 and 2 to the engine case 5 or the like.

[Effect of idea]

As mentioned above, in the present invention, an annular protrusion is formed around the collar screw attachment hole.
Since it fits into the screw mounting hole provided on the iron core and positions it, there is no need for another hole in the iron core for positioning the iron core other than the screw installation hole, and the iron core can be positioned reliably and accurately. It has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the main parts of the generator of the present invention;
Fig. 2 is a front view showing the assembled state of the upper core and collar of the above embodiment, Fig. 3 is a front view showing the assembly of the main parts of the above embodiment, and Fig. 4 applies to the above embodiment. FIG. 3 is a longitudinal cross-sectional view of the collar. 1.2... Iron core, 1a... Installation hole for iron core 1, 3.4... Generator coil, 6...
・Color, 6a...Mounting hole for collar 6, 6c
, 6d... Annular protrusion forming a positioning part in the radial direction, 6e... End face forming a positioning part in the thrust direction, 7... Mounting screw.

Claims (1)

[Scope of utility model registration request] In a magnet generator for an internal combustion engine in which each generating coil is wound around a separate iron core, a collar is interposed between each of the above-mentioned iron cores which are stacked up and down, and is fixed between each iron core with a screw, the collar is formed around the mounting hole of the above-mentioned collar. and an annular protrusion that fits into a mounting hole provided in each core constitutes a positioning part in the radial direction, and a positioning part in the thrust direction is constituted by bringing both end surfaces of the collar into contact with each core. A magnet generator for internal combustion engines, which is characterized by: