JP2008160974A - Stator and generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator for generators and a generator wherein it is possible to easily and reliably fix a junction between an armature coil and a lead wire for generation output to enhance the efficiency of junction fixing work, and it is possible to minimize a space for fixing the junction to reduce size. <P>SOLUTION: The stator 4 includes: an annular stator core 7; multiple teeth 10 protruded from the stator core 7 in the radial direction; and an armature coil 11 wound on the teeth 10. The stator core 7 detachably includes a clamper 16 for fixing the junction 14 between a terminal 11a of the armature coil 11 and a terminal 13a of the lead wire 13 for generation output. The junction 14 is clamped between the clamper 16 and the stator core 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to, for example, a stator and a generator used in cooperation with an engine of a motorcycle.

  In general, a magnet generator is often used as a generator mounted on a motorcycle. This magnet generator includes a rotor linked to a crankshaft of an engine of a motorcycle and a stator fixed to an engine case or cover. The stator includes an annular stator core, a plurality of teeth projecting radially from the stator core, and an armature coil wound around the teeth. And the magnetic flux which flows into teeth changes because the rotor provided with the permanent magnet rotates, and this becomes an electromotive force and an electric current flows into an armature coil. The current flowing through the armature coil is supplied to the battery and the attached electric equipment via a power generation output lead wire connected to the armature coil.

The connection between the armature coil and the power generation output lead wire is performed by overlapping the terminal portions and crimping the overlapped portions using a crimping sleeve or the like.
By the way, in a generator of a motorcycle having a large vibration, it is required to sufficiently fix the connecting portion so that the connecting portion between the armature coil and the power generation output lead wire is not disconnected. Then, the technique which fixes a connection part reliably by arrange | positioning a connection part on a stator and molding a stator and a connection part with a synthetic resin is proposed (for example, refer patent document 1).
Japanese Patent Laid-Open No. 2003-164096

  However, in the above-described prior art, since the connection portion is molded with synthetic resin, there is a problem that it takes time to fix the connection portion. Moreover, since a variation occurs in the fixing position of the connecting portion, a space must be secured around the connecting portion in consideration of the variation, and there is a problem that the generator may be increased in size.

Accordingly, the present invention has been made in view of the above-described circumstances, and easily and surely fixes the connecting portion between the armature coil and the power generation output lead wire, thereby improving the efficiency of fixing the connecting portion. A generator stator and a generator are provided.
It is another object of the present invention to provide a stator and a generator for a generator that can limit the fixed space of the connecting portion to a minimum and can be miniaturized.

In order to solve the above-described problems, the invention described in claim 1 includes an annular stator core, a plurality of teeth projecting radially from the stator core, and an armature coil wound around the teeth. A clamper for fixing a connecting portion between the terminal portion of the armature coil and the terminal portion of the power generation output lead wire is detachably attached to the stator core, and the clamper and the stator core The connection portion is sandwiched.
In this case, as in the invention described in claim 2, the clamper may be fastened and fixed to the stator core.
By comprising in this way, a connection part can be fixed only by attaching a clamper to a stator core. Further, since the connection portion is sandwiched between the clamper and the stator core, the mounting space for the clamper can be limited as a fixed space for the connection portion.

According to a third aspect of the present invention, the clamper is formed of a metal plate material, a clamper body for sandwiching the connection portion, and a bent and extended from one side of the clamper body, and the connection portion A pressing plate for preventing the clamper from coming off is provided.
By configuring in this way, it is possible to securely store the connecting portion in the clamper. Moreover, the heat dissipation volume of a stator can be increased by making a clamper metal.

The invention described in claim 4 is characterized in that the clamper is coated with an insulating material.
With this configuration, the insulation between the clamper and the connection portion can be ensured.

The invention described in claim 5 is characterized in that the clamper and the stator core are filled with a synthetic resin or an adhesive with the connecting portion sandwiched therebetween.
With this configuration, it is possible to prevent the connecting portion from coming out of the clamper due to vibration or the like.

The invention described in claim 6 includes the stator according to any one of claims 1 to 5.
By comprising in this way, the reliable generator which can prevent the disconnection of the connection part of an armature coil and the lead wire for power generation output can be provided.

According to the first or second aspect of the present invention, since the connecting portion can be fixed simply by attaching the clamper to the stator core, the armature coil and the power generation output lead wire can be easily and reliably connected. The portion can be fixed, and the efficiency of fixing the connecting portion can be improved.
Further, since the connection portion is sandwiched between the clamper and the stator core, the mounting space for the clamper can be limited as a fixed space for the connection portion. For this reason, the fixed space of the connection portion can be limited to a minimum, and the generator can be downsized.

According to the third aspect of the present invention, since the connection portion can be securely stored in the clamper, the connection portion can be more reliably fixed and the connection portion can be protected. . In addition, by securely storing the connection portion in the clamper, the fixing space of the connection portion can be more accurately limited. Therefore, it is possible to reliably reduce the size of the generator.
In addition, since the heat dissipation volume of the stator can be increased by using a metal clamper, the clamper can serve as a heat sink and reduce the heat generation temperature of the stator.

  According to the fourth aspect of the present invention, since the insulation between the clamper and the connection portion can be ensured, it is possible to provide a highly reliable generator stator.

  According to the fifth aspect of the present invention, the connecting portion can be prevented from coming out of the clamper due to vibration or the like, so that the connecting portion can be securely fixed even in a generator of a motorcycle with large vibration. Can do.

Next, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the magnet generator 1 is of an inner rotor type used in cooperation with an engine (not shown) such as a motorcycle, for example, A rotor 3 that rotates in conjunction with the shaft 2 and a stator 4 that is fixed to an engine case or the like are provided, and are configured to generate electric power as the engine is operated.

  The rotor 3 includes a rotor core 5 that rotates integrally with the crankshaft 2 of the engine, and a plurality of magnets 6 that are attached around the rotor core 5 in the circumferential direction. The rotor core 5 is made of a ferromagnetic material such as iron, and is formed in a substantially cylindrical shape sharing the axis of the crankshaft 2.

  The stator 4 has a substantially annular stator core 7 disposed outside the rotor core 5. The stator core 7 is formed by laminating magnetic material plates in the axial direction. On the outer peripheral side of the stator core 7, four convex portions 8 are formed at equal intervals in the circumferential direction, and screw holes 9 are formed therein. This screw hole 9 is for fastening and fixing the stator 4 to the case or cover of the engine.

  On the inner peripheral side of the stator core 7, a plurality of teeth 10 projecting radially inward are provided at equal intervals in the circumferential direction. Each tooth 10 is formed in a substantially T shape in plan view from the axial direction. Each of these teeth 10 is provided with an insulator (not shown), and an armature coil 11 is wound through the insulator.

  The armature coil 11 is formed by winding a predetermined number of coils 12 around the teeth 10, and the terminal portion 11 a is near the drawing position C of the harness power generation output lead wire 13 (FIG. 1A). 2 to the lower side of the stator core 7 in FIG. And each terminal part 11a of the armature coil 11 and each terminal part 13a of the lead wire 13 for power generation output are each overlapped, and the connection part 14 is formed by soldering this overlapped part. The connecting portion 14 is covered with an insulating tape 15.

As shown in FIG. 1, a clamper 16 is fastened and fixed to a portion of the stator core 7 corresponding to the connection portion 14 by a bolt 17 so as to cover the connection portion 14.
As shown in FIGS. 3 and 4, the clamper 16 is formed by bending a metal plate material by press working or the like, and has a clamper body 18 having a substantially hat-shaped cross section.

The clamper body 18 has a convex portion 22 formed in the center in the longitudinal direction (left and right direction in FIGS. 3A and 3B) and a flange portion extending outward in the longitudinal direction from both ends of the convex portion 22. 19 is integrally formed.
The flange portion 19 has an arc shape so as to enter inward (upper side in FIG. 3A), and a bolt hole 20 for screwing the bolt 17 is formed therein. A female screw portion 21 is formed in a portion corresponding to the bolt hole 20 of the stator core 7 (see FIG. 2A).

The height H1 of the convex portion 22 of the clamper body 18 is set to a height at which the connecting portion 14 can be sandwiched between the convex portion 22 and the upper surface 7a of the stator core 7 (see FIG. 4).
The convex portion 22 of the clamper body 18 is provided with a pressing plate 23 that bends and extends from the outside of the upper wall 22a downward (downward in FIG. 3B).

  The holding plate 23 is for preventing the connecting portion 14 from coming off from the clamper 16. The length L1 in the longitudinal direction of the pressing plate 23 is set to be approximately equal to the length in the longitudinal direction of the upper wall 22a of the convex portion 22, and the short direction of the pressing plate (vertical direction in FIG. 3B). The width L2 is set to be longer than the height H1 of the convex portion 22. As a result, the pressing plate 23 can block the outside of the gap between the convex portion 22 of the clamper body 18 and the stator core 7. Here, since the armature coil 11 wound around the teeth 10 of the stator 4 exists inside the gap between the convex portion 22 of the clamper body 18 and the stator core 7, the connection portion 14 is clamped. It is difficult to escape from 16 inside.

As shown in FIGS. 3A and 4, the width L3 of the convex portion 22 of the clamper body 18 in the short direction (vertical direction in FIG. 3A) is equal to the outer peripheral surface 7 b of the stator core 7 and the pressing plate. 23 is set to such a length that the power generation output lead wire 13 can be clamped.
That is, by fastening and fixing the clamper 16 to the stator core 7, the connection portion 14 is sandwiched between the convex portion 22 of the clamper body 18 and the upper surface 7 a of the stator core 7, while the power generation output lead wire 13 in the vicinity of the connection portion 14 is formed. The holding plate 23 and the outer peripheral surface 7b of the stator core 7 are sandwiched. As a result, the connecting portion 14 is securely fixed and protected by the clamper 16 without being affected by external vibration or the like.

Further, an adhesive 24 is filled inside the convex portion 22 of the clamper body 18 with the connecting portion 14 being sandwiched between the convex portion 22 and the upper surface 7a of the stator core 7. The inside of the convex portion 22 may be filled with a synthetic resin instead of the adhesive 24.
Further, it is desirable to cover the convex portion 22 and the pressing plate 23 of the clamper 16 with a heat shrinkable tube 25 or the like which is an insulating material (see FIG. 3B). By doing in this way, insulation with the clamper 16 and the connection part 14 can be made more reliable, and it becomes possible to provide the generator 1 with higher reliability.

Next, an operation procedure from connection to fixing of the armature coil 11 and the power generation output lead wire 13 of the harness will be described.
First, as shown in FIG. 2 (a), each terminal portion 11a of the armature coil 11 is led out to the vicinity C of the drawing position of the lead wire 13 for power generation output of the harness. And each terminal part 11a of the armature coil 11 and each terminal part 13a of the lead wire 13 for power generation output are overlapped, and this overlapped part is soldered. Next, the insulating tape 15 is wound around the connecting portion 14 formed by soldering.

  Thereafter, the clamper 16 is fastened and fixed to the stator core 7 using bolts 17 (see FIG. 1A). By doing in this way, the connection part 14 is clamped by the convex part 22 of the clamper main body 18, and the upper surface of the stator core 7, and will be in the state fixed. And the adhesive 24 is filled inside the convex part 22 of the clamper main body 18 in the state where the connection part 14 is clamped (see FIG. 4). This completes the work from connection to fixing of the armature coil 11 and the power generation output lead wire 13 of the harness.

  Thus, in the generator 1 having the stator 4 to which the armature coil 11 and the power generation output lead wire 13 of the harness are connected, when the rotor 3 rotates together with the crankshaft 2, the armature is moved by the movement of the magnet 6. An induced electromotive force is generated in the coil 11, and a battery (not shown) is charged via the power generation output lead wire 13, or power is supplied to the attached electric device.

Therefore, according to the above-described embodiment, the connecting portion 14 between the armature coil 11 and the power generation output lead wire 13 can be fixed simply by fastening the clamper 16 to the stator core 7 with the bolt 17. For this reason, the efficiency of the fixing work of the connection part 14 can be improved.
Further, the connecting portion 14 is sandwiched between the convex portion 22 of the clamper body 18 and the upper surface 7 a of the stator core 7, and the power generation output lead wire 13 in the vicinity of the connecting portion 14 is sandwiched between the pressing plate 23 and the outer peripheral surface 7 b of the stator core 7. Therefore, for example, even when used in a motorcycle having a large vibration, the connecting portion 14 can be reliably fixed and protected without the connecting portion 14 fluttering.

  Furthermore, since the connection part 14 is covered by the convex part 22 and the pressing plate 23 of the clamper 16, the fixing space of the connection part 14 can be limited. In other words, the height H1 of the convex portion 22 of the clamper 16 and the width L3 in the short direction of the convex portion 22 should be considered as the fixing space of the connecting portion 14, and an extra space is secured as the fixing space of the connecting portion 14. Since it is not necessary to ensure, it is possible to reduce the size of the generator 1.

And since the adhesive 24 is filled inside the convex part 22 of the clamper body 18 with the connecting part 14 sandwiched between the convex part 22 and the upper surface 7a of the stator core 7, the connecting part 14 is more reliably connected. The disconnection from the clamper 16 can be prevented.
Further, by fastening and fixing the metal clamper 16 to the stator core 7, the heat radiation volume of the stator 4 can be increased as a result. For this reason, the clamper 16 can serve as a heat sink to reduce the heat generation temperature of the stator 4.

The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
In the above-described embodiment, the case where the clamper 16 is fastened and fixed to the stator core 7 of the stator 4 by the bolt 17 has been described. However, the present invention is not limited to this, and the clamper 16 is detachably attached to the stator core 7. It only has to be provided.
Further, in the above-described embodiment, the case where the stator core 7 is formed by laminating magnetic material plates in the axial direction has been described. However, the present invention is not limited to this, and magnetic metal powder is pressure-molded. (A dust core) may be used.

The structure of the generator in embodiment of this invention is shown, (a) is a top view, (b) is a side view. The stator in embodiment of this invention is shown, (a) is a top view, (b) is a side view. The clamper in embodiment of this invention is shown, (a) is a top view, (b) is a side view, (c) is A arrow directional view of (b). It is explanatory drawing which shows the fixed state of the connection part in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Generator 4 Stator 7 Stator core 10 Teeth 11 Armature coil 11a, 13a Terminal part 13 Power generation output lead wire 14 Connection line 16 Clamper 18 Clamper body 23 Holding plate 24 Adhesive 25 Heat shrinkable tube (insulating material)

Claims (6)

In a stator comprising an annular stator core, a plurality of teeth projecting radially from the stator core, and an armature coil wound around the teeth,
A clamper for fixing a connection portion between the terminal portion of the armature coil and the terminal portion of the power generation output lead wire is detachably provided to the stator core,
The stator having the connection portion sandwiched between the clamper and the stator core.   The stator according to claim 1, wherein the clamper is fastened and fixed to the stator core.   The clamper is formed of a metal plate material, and a clamper main body for sandwiching the connection portion, and a pressing plate that is bent and extended from one side of the clamper main body to prevent the connection portion from coming off from the clamper. The stator according to claim 1, wherein the stator is provided.   The stator according to claim 3, wherein the clamper is coated with an insulating material.   The stator according to any one of claims 1 to 4, wherein the stator is filled with a synthetic resin or an adhesive in a state where the connection portion is sandwiched between the clamper and the stator core. A generator having the stator according to any one of claims 1 to 5.

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