JPH0724934Y2 - Generator generator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electronic generator for a generator, and more particularly to an effective generator for a magnet generator for a small motorcycle.

[Conventional technology]

The diameter of a wire for a generator mounted on a small motorcycle is usually 0.1.
Ignition power supply coil (hereinafter referred to as an exciter coil) in which a coil wire of about 0.2 mm is wound about 5000 times and a coil wire of a wire diameter of 0.8 to 1.0 mm is wound about 100 times for charging and lighting. Coil (hereinafter referred to as charge coil)
An electron source with and is used.

In this way, since the exciter coil has a completely different coil structure from that of the charge coil, conventionally, an exciter coil that requires complicated terminal treatment and taping is manufactured separately from other charge coils, and a plurality of radially arranged exciter coils are arranged. Various methods have been proposed for improving productivity by mounting the core body having individual salient pole portions.

As an example of the electron emission produced by these methods, see
As described in JP-A-117278, an exciter coil wound around a coil bobbin is surrounded by a resin case together with a bobbin, and this case is fitted to an I-shaped salient pole portion. In some cases, a pole piece (side core) is cast 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 the core body via a coil bobbin formed by insert molding, and the exciter is a separate body. There is an electron-emitting device in which a coil is press-fitted and fixed with a dovetail-shaped portion projecting from a salient pole portion of an exciter coil into a dovetail-shaped groove provided in the core body.

[Problems to be solved by the device]

However, the former electron emission requires a separate means for fixing the exciter coil to the I-shaped salient pole portion. For example, the method described in Japanese Utility Model Laid-Open No. 61-81755 is used, and since it is fixed by caulking, coil breakage due to coil distortion and creep on the surface of the coil bobbin cause so-called backlash. There's a problem. Also,
Since the exciter coil is press-fitted when it is pushed into the salient pole portion and fixed, 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 electron emission, when a coil is wound around a coil bobbin and is press-fitted and fixed in a groove provided in the core body, the coil bobbin and the core body are prevented from being distorted during press-fitting. Voids will be 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, stress concentrates at the time of vibration, particularly resonance, so-called rattling occurs. Moreover, since the coil bobbin and the core body are fitted to each other, the dimensional accuracy and the like are strictly controlled.

The purpose of the present invention is to produce the bobbin of the exciter coil,
An object of the present invention is to provide an electronic generator for a generator, which can prevent so-called rattling and ease dimensional management.

[Means for Solving the Problems]

The generator of the generator according to the present invention has a ring-shaped base having a core body (1) formed by laminating a plurality of thin plates of magnetic material, and a plurality of salient poles radially provided on the outer periphery of the base. Parts (A _{1 to} A ₈ ), at least one salient pole part (A ₁ ) is equipped with an exciter coil (2), and the other salient pole parts (A _{2 to} A ₈ ) are mounted. In generating electricity from a generator equipped with charge coils, the salient pole portion (A ₁ ) for the exciter coil has a side core (16) mounting portion formed at its tip, and the side core mounting portion Has a pair of engaging recesses (1a) that are recessed on both side surfaces thereof so as to extend in the stacking direction of the core body (1), and the exciter coil (2) has an exciter coil unit (8). It is attached to the salient pole section (A ₁ ) for the exciter coil. The excavator coil unit (8) is made of resin and is fitted with the side core (16) in the side core mounting portion. A pair of collars is provided at both ends of the cylindrical winding portion (9a) in the cylinder center direction. A coil bobbin (9), which is formed in a shape in which the parts (9b) and (9c) are respectively formed, and is externally inserted to the salient pole part (A ₁ ) for the exciter coil, and the coil bobbin (9).
And a coil wire (14) wound around the winding part (9a) of the core body (1), and the side core (16) has an insertion hole (19) having a width substantially equal to that of the side core attachment part. It is extended so as to extend in the stacking direction and has one end opened at one end side of the side core (16) and the other end closed at the opposite one end side, and the inner surface of the insertion hole (19) is formed. A pair of engagement part pieces (20) that engage with the engagement recesses (1a) are provided so as to project inward, and the engagement part pieces (18) are provided on the closed side edges of the side cores (16). ) Is projected outward, and the insertion hole (19) of the side core (16) is fitted into the mounting portion of the salient pole portion (A ₁ ). The resin package (20) is engaged with the engaging recesses (1a) of the mounting portion, and further around the exciter coil unit (8). ) Is formed,
It is characterized in that it is aligned with the outer edge of the engagement part piece (18) on the closed end side of the side core (16).

[Action]

According to the above-mentioned means, the resin of the resin package resin-molded on the outer peripheral portion of the coil unit causes the gap between the side cores mounted at the tip of the salient pole portion to connect the salient pole portion and the coil unit. Because it is filled to fill,
The coil unit will be fixed to the core body without a rattling. Therefore, so-called rattling does not occur in the coil bobbin even when the engine is rotated at high speed. Further, since the coil bobbin and the side core are fixed to the core body without requiring work such as press fitting,
Strictness such as dimensional accuracy for press fitting will be alleviated.

〔Example〕

FIG. 1 is a side sectional view showing an electron emission of a magnet generator according to an 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 the 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, and FIG. 9 is a front view thereof. FIG. 10 is a sectional view taken along line XX of FIG.

In the present embodiment, the electrons generated by the magneto-generator according to the present invention include a core body 1 having a plurality of (eight in this embodiment) salient pole portions A _{1 to} A ₈ arranged in a radial pattern, and a predetermined body. And an exciter coil 2 mounted on the salient pole portion A ₁ . Charge coils (not shown) are respectively wound around the other salient pole portions A _{2 to} A ₈ .

The core body 1 is formed by laminating a plurality of laminated plates 3 formed of a magnetic material such as iron and having a planar shape as shown in FIG. A window 4 is formed in 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 4 and fastening them. Has been converted.

At the tip of the salient pole portion A ₁ for the exciter coil in the core body 1, the pole pieces formed on the other salient pole portions A _{2 to} A ₈ are not formed, and the tip portion is formed in an open structure. There is. A pair of engaging recesses 1a are respectively provided on both side surfaces of the salient pole portion A ₁ and are recessed so as to extend in the thickness direction. The engaging recesses 1a are formed by side cores described later. Is formed so as to engage with the engaging part piece. Also, the core body 1
In the vicinity of the base end portion of the salient pole portion A ₁ for the exciter coil, a plurality of through holes 7 as resin filling portions are arranged side by side and are formed 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. The exciter coil unit 8 includes a coil bobbin 9 integrally formed of resin. The winding portion 9a of the coil bobbin 9 has a rectangular tubular shape into which the salient pole portion A ₁ can be fitted, and the pair of collar portions 9b and 9c. Is the winding part 9a
Each of them is formed in a rectangular flat plate shape larger than the above. A side core engaging groove 10 is provided on the outer surface of the outer collar 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 is projectingly provided on the bottom surface of the groove 10. A pair of terminal lugs 12, 12 are arranged on the left and right sides of the collar portion 9c on the inner side of the coil bobbin 9 and are vertically inserted.

The double-sided adhesive tape is applied to the winding portion 9a of the coil bobbin 9.
Exciter coil wire consisting of thin wire after 13 is wound 14
Is wound many times, and further, a glass cloth tape 15 is wound around the outer circumference of the wound coil wire material 14 via an adhesive tape 13. The pair of terminal wires 14a and 14b of the coil wire material 14 are soldered to the left and right terminal lugs 12 and 12 to be electrically connected.

The side core 16 is, as shown in FIGS. 8 to 10,
It is formed in a substantially rectangular thin plate shape. Two engaging part pieces 17 are provided on both long sides of the side core 16 and are arranged at both ends so as to project outward, respectively, and one engaging part piece 18 is provided on one short side, It is arranged in the center and projects outward.
Further, the side core 16 is provided with an insertion hole 19 arranged on the center line of the short side so as to extend in the longitudinal direction, and the insertion hole 19 is open at one short side and at the other short side. It is blocked. The insertion hole 19 is formed to have a width equal to the width of the exciter salient pole portion A ₁ , and a pair of engaging portion pieces 20 are provided inwardly on both inner side surfaces of the insertion hole 19, respectively. The engaging part piece 20 is formed so that it can be fitted and engaged with the engaging recessed part 1a that is recessed in the salient pole part A ₁ .

Coil bobbin 9 having coil wire 14 wound as described above
Is attached to the exciter coil salient pole portion A ₁ of the core body 1 by fitting the hollow portion of the winding portion 9a from the open end of the salient pole portion A ₁ .

Subsequently, the side core 16 is fitted to the tip of the coil bobbin 9 mounted on the salient pole portion A ₁ , and the left and right engaging part pieces 17 are fitted into the engaging grooves 10 formed on the left and right of the outer collar part 9b of the coil bobbin 9. Is installed. At the same time, the side core 16 has its insertion hole 19
The tip portion of the salient pole portion A ₁ is fitted in, and the engaging piece 20 protruding from the insertion hole 19 is fitted in the engaging recess 1a. When the side core 16 is fitted into the engagement groove 10 of the coil bobbin 9 to the end, the engagement portion piece 18 of the side core 16 engages with the boss portion 11 of the coil bobbin 9, so that the side core 16 has the coil bobbin 9 and the salient pole portion A _1. It is installed in the state that it does not come off. The outer edge of the engaging piece 18 is aligned with the outer edge of the outer collar 9b of the coil bobbin 9. In this state, the side core 16 is
By contacting or approaching A ₁ , it will be magnetically connected.

In this way, in the core body 1 in which the exciter coil unit 8 is mounted on the exciter coil salient pole portion A ₁ , the resin package 21 is provided around the exciter coil unit 8.
Is resin-molded by an 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 21.
When the 21 is completed, the exciter coil 2 is substantially constructed.

When the resin package 21 is resin-molded, part of the resin molding material is the coil bobbin 9 in the exciter coil 2.
And the salient pole portion A ₁ and between the coil bobbin 9 and the side core 16 also enter a minute gap to be solidified, so that the coil bobbin 9, the side core 16 and the salient pole portion A ₁ are
They are integrally connected to each other without so-called rattling.

Further, when the resin package 21 is resin-molded, a part of the resin molding material is filled in the plurality of through holes 7 formed in the core body 1 in the vicinity of the salient pole portion A ₁ , so that the insert molding device can be used. Forming mold (not shown). Since the resin solid portions 22 formed by filling the through holes 7 are integrally coupled to the resin package 21, the exciter coil 2 has a salient pole portion of the core body 1. It is in a state of being integrally connected to A ₁ .

When the assembly of the core body 1 is set in the mold, the side core 16 is positioned by the mold because the engaging piece 18 of the side core 16 is in contact with the cavity of the mold. Therefore, the side core 16 can always be properly arranged in the salient pole portion A ₁ and the exciter coil unit 8.

When the side core 16 is not completely inserted into the engaging groove 10 of the coil bobbin 9 and the mounting portion of the salient pole portion A ₁ ,
As the engaging piece 18 is pushed into the cavity as the mold is clamped, the side core 16 is forcibly inserted and properly positioned.

According to this embodiment, since the coupling of the coil bobbin 9 of the exciter coil unit 8 to the salient pole portion A ₁ for the exciter coil and the coupling of the side core 16 to the coil bobbin 9 are both secured by the coupling and filling of the molding resin, No press-fitting work required. Therefore, complicated dimension control required in press-fitting work or the like can be omitted or its strictness can be relaxed.

Further, since the salient pole portion A ₁ of the exciter coil 8 includes the side core (pole piece) 16, the exciter coil 8
The polar arc angle of the magnetic pole can be increased, and the ignition performance of the internal combustion engine ignition device can be improved.

Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

For example, as shown in FIG. 11, the resin package 21 formed on the outer circumference of the exciter coil unit 8 is
Resin molding may be performed together with the coil bobbin formed on the core body and other salient pole portions.

That is, the coil bobbin 23 resin-molded together with the resin package 21 has seven salient pole portions A _{2 to} A ₈ of the core body 1 on the seven sides of the core body 1 as shown in FIG. It is formed so as to cover the surface from the wall surface to the pole pieces of each salient pole portion with a constant layer thickness. Since the resin coil bobbin 23 is integrally connected to the resin package 21, the exciter coil 2 is more firmly connected to the core body 1.

Further, the resin coil bobbin for integrally coupling the exciter coil unit to the core body does not have to be formed on all the other salient pole portions of the core body, and one or more resin bobbins may be provided.

The through hole as a resin filling part that substantially forms the resin solid part for integrally connecting the exciter coil unit to the core body may be formed integrally with the resin package that covers the outer circumference 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 may be formed in the thickness direction from both sides of the core body, and the concave portion may be filled with the resin. Further, the recessed portion as the resin filling portion does not have to be completely penetrated through the core body in the thickness direction, and may be recessed halfway in the thickness direction. In this case, by filling the recessed portion with resin. , It is possible to secure the coupling with the core body of the exciter coil unit.

However, since the exciter coil unit is firmly and integrally joined to the salient pole portion by the side core engaged with the salient pole portion and the resin package in which these are insert-molded, the exciter coil unit is made by the resin solid portion and the resin coil bobbin. The bond structure may be omitted.

In the above-described embodiment, an example having eight salient pole portions is shown, but the present invention can be applied to an electron emitting device having a plurality of salient pole portions. Further, the shapes and structures of the core, the salient pole portion and the bobbin, the thickness and the number of turns of the coil wire material can be appropriately selected according to the conditions required for the generator.

[Effect of device]

As described above, according to the present invention, the resin of the resin package molded on the outer peripheral portion of the coil unit is attached to the tip of the salient pole portion so as to connect the salient pole portion and the coil unit. Since it is filled so as to fill the gap between the side cores, so-called play does not occur. Also, since the coil unit resin package is molded at the same time as the coil unit is fixed to the core body,
Good work efficiency. Furthermore, since the work of press-fitting the coil bobbin to the core body side is not required, the strictness of dimensional control for press-fitting can be eased.

When the core body assembly is set in the mold, the side core is positioned by the mold because the side core engaging part is in contact with the mold cavity. Therefore, the side cores can always be properly arranged on the salient poles and on the exciter coil unit. Also, if the side core is not completely inserted into the mounting portion of the salient pole, the engaging piece is pushed into the cavity as the mold is clamped, so the side core is forced to move. It will be inserted and properly positioned.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an electron emission of a magnet generator according to an 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 the 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, and FIG. 9 is a front view thereof. FIG. 10 is a sectional view taken along line XX of FIG. FIG. 11 is a front view showing another embodiment of the present invention. 1 ... core body, 1a ... engaging recess, A ₁ to A ₈ ... salient pole portions, 2 ... exciter coil, 3 ... laminates, 4 ... window hole, 5 ... through hole,
6 ... Rivet, 7 ... Through hole (resin filled portion), 8 ... Exciter coil unit, 9 ... Coil bobbin, 9a ... Winding portion,
9b, 9c ... Collar part, 10 ... Engagement groove, 11 ... Boss, 12 ... Terminal lug, 13 ... Double-sided adhesive tape, 14 ... Coil wire material, 15 ... Glass cloth tape, 16 ... Side core (pole piece), 17, 18 …
Engagement piece, 19 ... Insertion hole, 20 ... Engagement piece, 21 ... Resin package, 22 ... Resin solid part, 23 ... Resin coil bobbin.

Claims (1)

[Scope of utility model registration request] 1. A core body (1) formed by laminating a plurality of thin plates of magnetic material, and an annular base portion, and a plurality of salient pole portions (A _{1 to} A) radially provided on the outer periphery of the base portion. ₈ ) and at least one salient pole portion (A ₁ ) is equipped with an exciter coil (2), and the other salient pole portions (A _{2 to} A ₈ ) are equipped with charge coils, respectively. In an electric generator of a generator, the exciter coil salient pole portion (A ₁ ) has a side core (16) mounting portion formed at its tip, and the side core mounting portion has a pair of engaging recesses. (1a) is sunk on both sides so as to extend in the stacking direction of the core body (1), and the exciter coil (2) has an exciter coil unit (8) and the exciter coil salient pole portion. (A ₁ ) is extrapolated to the side core The exciter coil unit (8) is made of resin by fitting the side core (16) to the mounting portion, and the pair of collar portions (9b) is provided at both ends of the tubular winding portion (9a) in the cylinder center direction. , (9c) are respectively formed, and a coil bobbin (9) externally inserted to the salient pole portion (A ₁ ) for the exciter coil, and this coil bobbin (9)
And a coil wire (14) wound around the winding part (9a) of the core body (1), and the side core (16) has an insertion hole (19) having a width substantially equal to that of the side core attachment part. It is extended so as to extend in the stacking direction and has one end opened at one end side of the side core (16) and the other end closed at the opposite one end side, and the inner surface of the insertion hole (19) is formed. A pair of engagement part pieces (20) that engage with the engagement recesses (1a) are provided so as to project inward, and the engagement part pieces (18) are provided on the closed side edges of the side cores (16). ) Is projected outward, and the insertion hole (19) of the side core (16) is fitted into the mounting portion of the salient pole portion (A ₁ ). The resin package (20) is engaged with the engaging recesses (1a) of the mounting portion, and further around the exciter coil unit (8). ) Is formed,
An electronic generator for a generator, characterized in that it is aligned with the outer edge of the engaging part (18) at the closed end of the side core (16).