JPH0541536Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a generator coil mounting device for an internal combustion engine.

BACKGROUND TECHNOLOGY In an internal combustion engine, for example, an ignition generator coil and a charging generator coil for charging a battery for a self-starter are mounted close to a magnet rotor for an ignition magnet, and the rotation of the magnet rotor causes the charging coil to be connected to the coil. A device is used that charges the battery by supplying the generated power to the battery charging circuit, but in conventional devices, the core end of the charging coil is placed with a predetermined minute gap (air gap) from the magnet rotor. Attaching the charging coil in this way was a very difficult task. Particularly, in portable power working machines that are required to be smaller and lighter, there are many problems such as processing accuracy of related parts and assembly.

Problems to be Solved by the Invention Therefore, the present invention eliminates the above-mentioned difficulties in processing and mounting the conventional power generating coil and related parts, facilitates positioning and mounting of the power generating coil, and simplifies the structure. An object of the present invention is to provide a generator coil mounting device for an internal combustion engine that is convenient to use.

Means for Solving the Problems That is, the generating coil mounting device for an internal combustion engine according to the present invention includes forming a pair of leg portions spaced apart from each other on the outer peripheral portion of the case, and forming a window close to the leg portions, A stand portion is formed at the tip of the leg portion, and the tip of the arm portion of the core of the power generating coil is inserted into the case through the window, and the base portion of the arm portion is connected to the stand portion of the leg portion. The device is characterized by a configuration in which the connected power generating coil is placed at a predetermined position with respect to the case, and the arm portion is fixed to the leg portion.

Function: Therefore, when the base of the arm is placed on the base of the leg, the generating coil can be accurately and automatically positioned with respect to the case and the magnet rotor therein.

Embodiments Next, the present invention will be described based on embodiments shown in the drawings.

The illustrated embodiment has a case 1 (the lower part of which is shown), such as a fan case, which rotatably accommodates a magnet rotor (not shown) for an ignition magnet. , fixed to the crankcase (not shown) of an internal combustion engine, for example,
The magnet rotor is attached to a crankshaft (not shown) of an internal combustion engine and is rotationally driven. The magnet rotor generates ignition power in the ignition power generation coil (not shown) fixed in the case 1, and transmits this power to an electric ignition circuit (not shown). ) to generate a spark at an ignition plug (not shown) to keep the internal combustion engine running. In order to utilize this ignition magnet magnet rotor also for a battery charging device (not shown) for an internal combustion engine, a charging generating coil 3 is attached to the lower outer peripheral portion 2 of the case 1.

The charging coil 3 has a U-shaped core 4.
and a winding 5 wound around the body of the core 4. On the other hand, in the lower outer peripheral portion 2 of the case 1,
a pair of leg portions 6 and 7 extending downwardly and outwardly therefrom;
are integrally formed, and these leg portions 6 and 7 are spaced apart from each other in the circumferential direction of the case 1. The leg portions 6 and 7 have axial screw holes 8 and 9, respectively, which are parallel to the crankshaft in portions close to the case 1.
Furthermore, the lower ends of the leg portions 6 and 7 are formed with laterally extending platform portions 10 and 11, respectively.
Windows 12 and 13 are formed in the lower outer peripheral portion 2 of the case 1 at positions adjacent to the screw holes 8 and 9 of the leg portions 6 and 7, respectively. The inside of the case 1 is open to the outside on the lower side thereof.

The core 4 of the charging coil 3 is connected to the winding 5 thereof.
The base portions 20 and 21 at both ends of the wrapped portion
Arm portions 14 and 15 are integrally formed and extend upwardly from each other, and these arm portions 1
4 and 15 form screw insertion holes 16 and 17, respectively, passing through them laterally.

When the charging coil 3 is attached to the case 1, the tip portions 1 of the arm portions 14 and 15 of the core 4
8 and 19 are inserted into the case 1 through the windows 12 and 13 of the lower outer peripheral portion 2 of the case 1, respectively, and the lower sides of the bases 20 and 21 of the arm portions 14 and 15 are inserted into the case 1, respectively. The leg parts 6 and 7 of the case 1 are placed on the base parts 10 and 11. In this state, the distal ends 18 and 19 of the arm portions 14 and 15 are placed in the case 1 at a position maintaining a predetermined gap from the magnet rotor,
The charging coil 3 will not fall downward. Further, at this time, the screw insertion holes 16 and 17 of the arm portions 14 and 15 are aligned with the screw holes 8 and 9 of the leg portions 6 and 7 of the lower outer peripheral portion 2 of the case 1, respectively. In this state, screw the screws 22 and 23 into the screw holes 8 and 9 through the screw insertion holes 16 and 17, respectively, and
4 and 15 are fixed to the leg portions 6 and 7 of the lower outer peripheral portion 2 of the case 1, respectively. In this way, the charging coil 3 is easily attached to the case 1 at a predetermined position.

In addition, if the shapes of the windows 12 and 13 are set to the size that allows the insertion of the tips 18 and 19 of the core 4, or if a seal made of an elastic material or the like is used in combination, it is possible to It is possible to effectively prevent the intrusion of garbage, etc. Furthermore, the present invention can be used for mounting other than charging coils.

Further, the mounting position of the charging coil 3 is not limited to the mounting position of the embodiment, and can be changed as appropriate.

Effects of the invention With the structure of the invention explained above, the invention has the following effects:
It is extremely easy to attach and position the generating coil to the case, and the internal combustion engine device can be manufactured and assembled easily and at low cost.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of essential parts of an embodiment of the generator coil mounting device for an internal combustion engine according to the present invention. 1...Case, 2...Lower outer circumference of the case,
3... Generator coil, 4... Core, 6, 7... Leg part, 10, 11... Stand part, 12, 13... Window,
14, 15... Arm portion, 18, 19... Tip portion of arm portion, 20, 21... Root portion of arm portion.

Claims (1)

[Scope of utility model registration request] A pair of leg portions 6, 7 spaced apart from each other are formed on the outer peripheral portion 2 of the case 1, windows 12, 13 are formed close to the leg portions, and platform portions 10, 11 are formed at the tips of the leg portions, respectively. The tip portions 18 and 1 of the arm portions 14 and 15 of the core 4 of the generating coil 3
9 into the case through the windows, the bases 20 and 21 of the arm portions are respectively placed on the base portions of the leg portions, and the generating coil is placed at a predetermined position with respect to the case. A generator coil attachment device for an internal combustion engine, characterized in that an arm portion is fixed to the leg portion.