JP2542207Y2 - Generator power generation - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to the generation of electricity from a generator, and more particularly, to an application that is effective when used to generate electricity from a magnet generator for a small motorcycle.

[Conventional technology]

Generators mounted on small motorcycles usually have a wire diameter of 0.
An ignition power supply coil (hereinafter referred to as an exciter coil) in which a coil wire of about 1 to 0.2 mm is wound about 5000 times, and a charging wire in which coil wire of about 0.8 to 1.0 mm is wound several hundred times Lighting coil (hereinafter referred to as charge coil)
An electron emission having the following is used.

As described above, since the exciter coil is completely different from the charge coil and its coil structure, conventionally, an exciter coil requiring complicated terminal processing and taping is manufactured separately from other charge coils, and a plurality of exciter coils are arranged radially. Various methods have been proposed for improving productivity by mounting the core body having a plurality of salient pole portions.

As an example of electron emission produced by these methods,
As described in JP-A-59-117278, the exciter coil wound on the coil bobbin is surrounded by a resin case together with the bobbin, and this case is fitted to an I-shaped salient pole portion. In some cases, a pole piece (side core) is cast into the pole piece, and the pole piece is magnetically connected to the tip of the salient pole.

Further, as described in Japanese Utility Model Application Laid-Open No. 57-21234, a coil wire is wound around a salient pole portion separated from a core main body through a coil bobbin formed by insert molding, and this exciter is formed as a separate body. There is an electron emission in which a coil is press-fitted into a dovetail-shaped groove provided in a core body, and a dovetail-shaped portion protruding from a salient pole portion of an exciter coil is fixed.

[Problems to be solved by the invention]

However, in the former case, a separate means for fixing the exciter coil to the I-shaped salient pole is required. For example, using the method described in Japanese Utility Model Application Laid-Open No. 61-81755, etc., and fixed by caulking, the coil is disconnected due to distortion of the coil, and creep occurs on the surface of the coil bobbin, so-called rattling occurs. There's a problem. Also,
Since the exciter coil is pressed into the salient pole portion and fixed therein, it is not easy to manage the dimensional accuracy of the coil bobbin, the resin case, the magnetic pole piece, the salient pole portion, and the like.

On the other hand, in the latter case, when a coil is wound around a coil bobbin and press-fitted into a groove provided in the core main body to fix the coil, the coil bobbin and the core main body are prevented from being distorted at the time of press-fitting. A void is formed between them. However, since the dovetail-shaped portion of the salient pole portion of the exciter coil press-fitted into the dovetail-shaped groove of the core body is thin, vibration, particularly stress is concentrated at the time of resonance, and so-called rattling occurs. In addition, since the coil bobbin and the core main body are fitted to each other, strict control of dimensional accuracy and the like is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a generator which can prevent so-called backlash which occurs on a bobbin of an exciter coil and can reduce size control.

[Means for solving the problem]

The generator according to the present invention emits electricity from a core body (1) formed by laminating a plurality of thin sheets of magnetic material, and an annular base, and a plurality of salient poles protruding radially around the outer periphery of the base. (A _{1 to} A ₈ ), at least one salient pole (A ₁ ) is equipped with an exciter coil (2), and the other salient poles (A _{2 to} A ₈ ) In the generator generated by the charge coil, the exciter coil salient pole portion (A ₁ ) has a side core (16) attached at an end thereof in an open structure, and the charge coil salient pole portion (A ₁ ) has an open structure. The poles (A _{2 to} A ₈ ) each have a magnetic pole piece formed at the tip thereof. The exciter coil (2) is provided outside the exciter coil unit (8) to the exciter coil salient pole (A ₁ ). The side core (16) The exciter coil unit (8) is formed of resin, and a pair of flanges (9b) and (9c) are formed at both ends of the cylindrical winding part (9a) in the tube core direction. A coil bobbin (9) externally inserted into the exciter coil salient pole portion (A ₁ ), and a coil wire (14) wound around a winding portion (9a) of the coil bobbin (9). ) and a further, the resin package around the exciter coil unit (8) (20), the coil bobbin is formed on the salient pole portion for each of said charge coil (a ₂ to a ₈₎ (22) The coil bobbin (22) covers the surface from the side wall surface of the core body (1) to each of the magnetic pole pieces, and is formed integrally and continuously with the resin. _2- A ₈ ) Each charge coil at both ends Each of the flanges is formed to prevent collapse of the roll.

[Action]

According to the above-described means, since the resin package formed of resin on the outer peripheral portion of the coil unit and the coil bobbin made of resin formed on the core main body are integrally connected, the coil unit has no looseness on the core main body. Will be fixed. Therefore, so-called play does not occur on the coil bobbin even when vibration occurs during high-speed rotation of the engine. In addition, since the coil bobbin is fixed to the core main body without requiring an operation such as press fitting, strictness such as dimensional accuracy for press fitting is reduced.

〔Example〕

FIG. 1 is a side sectional view showing the generation of electricity of a magnet generator according to one embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a front view showing a core body. , FIG. 5 is a plan view showing an exciter coil unit, FIG. 6 is a front view thereof, FIG. 7 is a partially omitted sectional view thereof, FIG. 8 is a plan view showing a side core, FIG. FIG. 10 is a sectional view taken along line XX of FIG.

In the present embodiment, Hatsudenko of the magneto generator according to the present invention includes a core body 1 having a salient pole portion A ₁ to A ₈ a plurality arranged radially (eight in this embodiment), a predetermined and a exciter coil 2 mounted on the salient pole portion a _1. Other salient pole portion A ₂ to A ₈ charge coil (not shown) is adapted to be wound respectively.

The core body 1 is formed by laminating a plurality of laminated plates 3 each having a planar shape as shown in FIG. 4 using a magnetic material such as iron. A window hole 4 is formed at the center of the core body 1, and the core body 1 is integrally formed by inserting rivets 6 into through holes 5 formed on both sides of the window hole 4 and fastening the core body 1. Has been

The distal end portion of the exciter coil salient pole portion A ₁ in the core body 1 is not formed magnetic pole piece formed on the other salient pole portion A ₂ to A _8, tip is formed in an open structure I have.
In the vicinity of the base end portion of the exciter coil salient pole portion A ₁ in the core body 1, the through-hole 7 of the resin filler is a plurality, are protruded respectively side by side arranged is in the thickness direction.

This is the salient pole portion A ₁ exciter coil unit 8 is configured as shown in FIG. 5-FIG. 7 is extrapolated, the side core to the distal end of the salient pole portion A ₁ (pole piece) 16 is installed. Exciter coil unit 8 is provided with a coil bobbin 9 that is integrally molded by resin, the rectangular cylindrical winding portion 9a of the coil bobbin 9 that may be fitted to the salient pole portion A _1, A pair of flange portions 9b and 9c Is the winding part 9a
Each of them is formed in a larger rectangular flat plate shape. A side core engaging groove 10 is provided on the outer surface of the outer flange portion 9b of the coil bobbin 9, and is formed to have a constant width and a constant depth so as to extend in the thickness direction of the core body 1. A boss 11 protrudes from the bottom of the groove 10. A pair of terminal lugs 12, 12 are arranged on the left and right sides of the flange 9c inside the coil bobbin 9, and are inserted in the vertical direction.

After the double-sided adhesive tape 13 is wound around the winding portion 9a of the coil bobbin 9, an exciter coil wire made of a fine wire is formed.
14 is wound many times, and furthermore, a glass cloth tape 15 is coated with an adhesive tape 13 around the outer periphery of the wound coil wire 14.
Is wrapped around. The pair of terminal wires 14a, 14b of the coil wire 14 are soldered to the left and right terminal lugs 12, 12, respectively, and are electrically connected.

As shown in FIGS. 8 to 10, the side core 16 is formed in a substantially rectangular and slightly curved thin plate shape. Three engaging pieces 17 are arranged on both long sides of the side core 16, are disposed at the center and both ends, and are projected outward, respectively, and one engaging piece 18 is provided on both short sides. It is located in the center and protrudes outward. Further, an insertion hole 19 is provided in the center of the side core 16 so as to penetrate in the thickness direction, and the insertion hole 19 is formed in a rectangular shape substantially equal to the hollow portion of the winding portion 9a in the coil bobbin 9. ing.

The side core 16 is mounted on the tip of the coil bobbin 9 manufactured as described above, and the right and left engaging portions 17 are fitted into the engaging grooves 10 formed on the left and right sides of the outer flange portion 9b of the coil bobbin 9. Is done. When the side core 16 is completely inserted into the engagement groove 10 of the coil bobbin 9, the engagement piece 18 of the side core 16 engages with the boss 11 of the coil bobbin 9, so that the side core 16 is attached to the coil bobbin 9 in a retaining state. Is done.

Is attached is fitted to the hollow portion of the winding portion 9a to the exciter coil for salient pole A ₁ of the core body 1 from the open end of the salient pole portion A ₁ is a coil bobbin 9 is mounted to the side core 16 in the distal portion . In this mounting state, the side core 16 is a salient pole
It would be magnetically connected to A _1.

In this way, the core body 1, the exciter coil unit 8 is attached to the exciter coil for the salient pole portion A ₁ is
Resin package 20 around exciter coil unit 8
But with other salient pole portions A ₂ to A ₈ resin coil bobbin 22 is molded to the core body 1 is molded by insert molding device (not shown). That is, as shown in FIGS. 1 to 3, most of the exciter coil unit 8 except for a part of the side core 16 and the terminal lug 12 is covered with the resin package 20. The completion of the resin package 20 substantially configures the exciter coil 2.

On the other hand, the coil bobbin 22 is molded together with the resin package 20, as shown in FIG. 1-FIG. 3, in other salient pole portions A ₂ to A ₈ of the core body 1, the core body 1 It is formed so as to cover the surface with a constant layer thickness from the seven side wall surfaces to the pole pieces of each salient pole portion. Since the resin coil bobbin 22 is integrally connected to the resin package 20, the exciter coil 2
Are integrally connected to the core body 1.

Further, the molding resin of the resin package 20 and the coil bobbin 22 and between the coil bobbin 9 and the salient pole portion A ₁ in the exciter coil 2, also entering the narrow gap that occurs like between the coil bobbin 9 and the side core 16 and solidified to coil bobbin 9, the side cores 16 and the salient pole portion a ₁ is a so-called snugly will be integrally connected to each other.

When the resin package 20 is molded with the coil bobbin 22, a part of the resin molding material is filled into the plurality of through holes 7 formed near the salient pole portion A ₁ of the core body 1. A molding die (not shown) of the insert molding device is configured. Since the resin solid portions 21 formed by filling the through holes 7 are integrally connected to the resin package 20, the exciter coil 2 is integrally connected to the core body 1. It will be in the state that was done.

According to this embodiment, since binding of the coil bobbin 9 of the exciter coil unit 8 with respect to the exciter coil for salient pole portion A _1, and coupling of the side core 16 against the coil bobbin 9, which both are secured by bonding and filling of the molding resin, No press-fitting work is required. Therefore, it is possible to omit complicated dimensional control required in press-fitting work or the like, or to alleviate its strictness.

Further, since the salient pole portion A ₁ of the exciter coil 8 that will comprise a side core (pole piece) 16, it is possible to increase the polar arc angle of the magnetic poles of the exciter coil 8, the ignition performance of the ignition device for an internal combustion engine Can be improved.

The present invention is not limited to the above embodiment,
It goes without saying that various changes can be made without departing from the scope of the invention.

The through-hole as a resin filling portion for substantially molding a solid resin portion for integrally coupling the exciter coil unit to the core body may be formed integrally with the resin package covering the outer periphery of the coil bobbin. The number and shape of the holes can be appropriately set according to the conditions.

Further, the resin filling portion is not limited to the through hole, and a concave portion having an arbitrary depth in the thickness direction from both sides of the core body may be formed, and the concave portion may be filled with the resin. Further, the concave portion serving as the resin filling portion does not need to be completely penetrated in the thickness direction with respect to the core main body, but may be merely immersed halfway in the thickness direction. Thereby, the coupling of the exciter coil unit to the core body can be ensured.

In the above-described embodiment, an example having eight salient pole portions has been described. However, the present invention can be applied to an electron emission having a plurality of salient pole portions. In addition, the shapes and structures of the core, salient poles and bobbin, the thickness and the number of turns of the coil wire, and the like can be appropriately selected according to the conditions required for the generator.

[Effect of the invention]

As described above, according to the present invention, the resin coil bobbin formed on the core body and the resin package of the coil unit mounted on the salient pole portion of the core body are integrally connected by the formed resin. Therefore, so-called play does not occur. In addition, since the fixing operation of the coil unit to the core body is performed simultaneously with the molding of the resin package of the coil unit, the operation efficiency is high. Further, since it is not necessary to press-fit the coil bobbin into the core body, the strictness of dimensional control for press-fitting can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing the generation of electricity of a magnet generator according to one embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a front view showing a core body. , FIG. 5 is a plan view showing an exciter coil unit, FIG. 6 is a front view thereof, FIG. 7 is a partially omitted sectional view thereof, FIG. 8 is a plan view showing a side core, FIG. FIG. 10 is a sectional view taken along line XX of FIG. 1 ... core body, A ₁ to A ₈ ... salient pole portions, 2 ... exciter coil, 3 ... laminates, 4 ... window hole, 5 ... through hole, 6 ... rivets, 7 ... through hole (resin filler), 8 ... Exciter coil unit, 9 ... Coil bobbin, 9a ... Winding part, 9b, 9c ... Flange part, 10 ... Engaging groove, 11 ... Boss, 12 ... Terminal lug, 13 ...
Double-sided adhesive tape, 14 ... Coil wire, 15 ... Glass cloth tape, 16 ... Side core (pole piece), 17, 18 ... Engagement piece,
19 ... hole, 20 ... resin package, 21 ... solid resin part, 22 ... resin coil bobbin.

Claims (1)

(57) [Scope of request for utility model registration] 1. A sheet of magnetic material and a plurality laminated core body (1) comprising an annular base portion, the salient pole portions of the plurality of which are projecting radially on the outer periphery of the base portion (A ₁ to A ₈ ), an exciter coil (2) is mounted on at least one salient pole (A ₁ ), and a charge coil is mounted on each of the other salient poles (A _{2 to} A ₈ ). The exciter coil salient pole portion (A ₁ ) has a side core (16) attached at its tip in an open structure, and the charge coil salient pole portion (A ₂ 〜 A ₈ ) has a pole piece formed at the tip thereof, and the exciter coil (2) has an exciter coil unit (8) extrapolated to the exciter coil salient pole portion (A ₁ ), A side core (16) is fitted to the side core mounting portion, The exciter coil unit (8) is made of resin, and is formed in a shape in which a pair of flanges (9b) and (9c) are formed at both ends of the cylindrical winding part (9a) in the cylinder center direction. A coil bobbin (9) extrapolated to the exciter coil salient pole portion (A ₁ ); and a coil bobbin (9)
And a coil wire rod (14) wound around the winding portion (9a). Further, a resin package (20) is provided around the exciter coil unit (8), and each of the charge coil salient pole portions ( coil bobbin (22) integral and continuous with being resin-molded formed a ₂ to a _8), the coil bobbin (22) is that surface from the sidewall surface of the core body (1) over the respective pole piece coated and, and, of the generator, characterized by forming said each flange portion to prevent the both end portions of the winding collapse of the charge coil of each salient pole portion (a ₂ ~A ₈₎ respectively Emission.