WO2015083623A1

WO2015083623A1 - Magnet-type electric generator

Info

Publication number: WO2015083623A1
Application number: PCT/JP2014/081454
Authority: WO
Inventors: 誠一水谷; 優一水元
Original assignee: デンソートリム株式会社
Priority date: 2013-12-02
Filing date: 2014-11-27
Publication date: 2015-06-11
Also published as: BR112016012324B8; CN105900318A; CN105900318B; JP2015130785A; BR112016012324A2; JP6165702B2; BR112016012324B1

Abstract

This magnet-type electric generator (1) is provided with: a rotor (6) which is rotatably supported, and which is provided with a plurality of magnets (62); and a stator (10) having a core (20) provided with a winding unit (50). The winding unit and/or an output cable are formed from aluminium wire. An intermediate connection member (102) is provided so as to pass through the core in an axial direction. The output cable and a lead section (T_B) of the winding unit are connected to each other by the intermediate connection member. A section where the intermediate connection member and the lead section are connected, and a section where the intermediate connection member and the output cable are connected, are respectively positioned at either side of the core in the axial direction.

Description

Magnet generator

The present invention relates to a magnet generator mounted on a vehicle such as a motorcycle, and more particularly, to a magnet generator provided with a connecting member for connecting a lead portion of a generator coil inside the generator to an electric circuit outside the generator.

Generally, a vehicle such as a two-wheeled vehicle includes a generator that generates electric power by using rotation of an engine mounted on the vehicle. The battery is charged with the power generated by the generator, and the power of the electric system of the vehicle is covered by the charged power.

As this generator, a magnet generator is often used. This magnet generator includes a rotor with a magnet positioned inside an engine crank cover and a stator positioned inside the rotor in the radial direction. The stator includes a core having a plurality of teeth, and a single-phase or three-phase coil (power generation coil) is wound around the plurality of teeth. One end of the engine crankshaft is coupled to the rotor. For this reason, the rotor, that is, the magnet rotates with the rotation of the engine, and a single-phase or three-phase alternating current is induced in the coil by the rotating magnetic field generated by the rotation. This induced current flows from the lead end of the coil to the output lead wire via the terminal and is supplied to the electric circuit of the vehicle.

As the connection structure of such output lead wires, those described in Patent Document 1 and Patent Document 2 are known. In these documents, a resin molded body is inserted and fixed in the axial direction of the stator core so as to penetrate both axial sides of the stator core, that is, both the crankshaft side and the crank cover side. The molded body is provided with a hole through which a conductive terminal is press-fitted. Therefore, by inserting a terminal made of iron or brass and plated with tin into this hole, the end of the terminal protrudes from both side surfaces of the stator core. Therefore, the lead wire from the coil and the output lead wire are connected to both ends.

By inserting and fixing the terminal in the axial direction of the stator core through both sides of the stator core in the axial direction, the stator core fixing surface can be saved in space, and the assembling property when connecting the lead wire to the terminal is improved. . As a result, the mounting seat surface on the engine side can be enlarged, and the magnet generator can be stably fixed. Further, the degree of freedom of the terminal layout is increased. Furthermore, by reducing the number of connection points within a limited space, the space at one connection point is expanded, and workability at the time of connection is enhanced.

JP 2006-158181 A JP 2008-131820 A

In the case of the connection structure using the terminals described above, a copper wire is used for the power generation coil, and a copper wire is also used for the output lead wire. Further, the connection between the end of the terminal on the crank cover side and the lead portion of the power generation coil is performed by soldering, and the connection between the end of the terminal on the crankshaft side and the output lead wire is also performed by soldering.

However, the power generation coil made of copper wire is not only high in parts cost, but also very heavy, so the generator itself becomes heavy. Therefore, it can be assumed that an aluminum wire is used in place of the copper wire, but the operation of connecting the aluminum wire to a terminal made of iron, copper, or brass is extremely difficult. For example, in the case of soldering, it is necessary to use aluminum wire flux in order to remove the oxide film on the surface of the aluminum wire, and soldering work using ultrasonic solder is required. When aluminum wire flux is used, post-solder cleaning is required, increasing the number of work steps. Since ultrasonic soldering takes a long time for soldering, the working efficiency is significantly reduced. Further, since the melting point of the solder for aluminum is 300 ° C. or higher, the melting point of the resin component may be generated because it is higher than the melting point of the surrounding resin component.

The present invention has been made in view of the above-described problems, and the object thereof is to reduce the weight of the generator itself, facilitate the connection work between the terminal and the lead portion of the power generation coil, and reduce the manufacturing cost. It is providing the magnet type generator which can suppress a raise.

In order to achieve the above object, a magnet generator according to the present invention provides a gap of a predetermined distance between a rotor having a plurality of magnets rotatably supported and arranged in a circumferential direction. And a stator having a core provided with a winding part and a power generation output of the winding part via an output cable. In this configuration, at least one of the winding portion and the output cable is formed of an aluminum wire, and the lead portion of the winding portion and the output cable are disposed through the core in the axial direction. The intermediate connection member is connected to each other, and the connection portion between the intermediate connection member and the lead portion, and the connection portion between the intermediate connection member and the output cable are located on both sides in the axial direction of the core. It is characterized by that.

This makes it possible to reduce the weight of the generator, facilitate the connection work between the terminal and the lead portion of the power generation coil, and suppress an increase in manufacturing cost.

The side view seen from the axial direction of the arrow I shown in FIG. 2 based on 1st embodiment of the magnet type generator of this invention. FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. The side view which shows the laminated board which comprises the stator of the magnet type generator which concerns on this embodiment. The perspective view which shows the bobbin division body which comprises one side of the bobbin of a division structure. The electrical circuit diagram of the winding part of a stator. The fragmentary sectional view which shows the connection mechanism for connecting the battery side and the earth | ground side lead part of the coil | winding with which the core of the stator was equipped. The figure (A), (B) is the side view and top view of a terminal which are used for the connection mechanism which concerns on 1st embodiment. The fragmentary perspective view explaining the guide groove which guides the lead part of the coil part concerning a first embodiment. The fragmentary perspective view explaining the connection positional relationship of the lead part of a coil | winding part and terminal which were guided to the guide groove which concerns on 1st embodiment. The figure (A), (B) is a figure explaining the modification of the method of application | coating of a protective agent. The side view which concerns on 2nd embodiment of the magnet type generator of this invention. FIG. 12 is a schematic sectional view taken along the line XII-XII in FIG. The side view which shows the laminated board which comprises the stator of the magnet type generator which concerns on this embodiment. The perspective view which shows the bobbin division body which comprises one side of the bobbin of a division structure. The same figure (A), (B), (C) is the side view of the terminal used for the connection mechanism which concerns on 2nd embodiment, a top view, and a top view. The fragmentary perspective view explaining the guide groove which guides the lead part of the coil part concerning a second embodiment. The fragmentary perspective view explaining the connection positional relationship of the lead part of a coil | winding part and terminal which were guided by the guide groove which concerns on 2nd embodiment. The other partial perspective view explaining the connection positional relationship of the lead part of a coil | winding part and terminal which were guided by the guide groove which concerns on 2nd embodiment.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a magnet generator and its connection mechanism (structure) according to the present invention will be described.

(First embodiment)
1 to 3 show an outline of the structure of a single-phase magnet generator as a rotating electrical machine according to the first embodiment.

Magnet generator 1 (hereinafter sometimes simply referred to as “generator”) is attached, for example, in the vicinity of an engine of a two-wheeled vehicle, and generates electricity by being rotated by the rotational force of the engine. That is, in this embodiment, the generator 1 is a generator for two-wheeled vehicles. The electric power generated by the generator 1 is supplied to a vehicle-side electric circuit (not shown).

The generator 1 includes a stator (armature) 10 and a rotor (rotary body) 60. The stator 10 includes a core 20, a bobbin 30 and a winding part 50. The core 20 is formed by laminating thin metal plates such as iron or steel. The core 20 has a substantially annular core body 21 (see FIGS. 2 and 3).

In the following description, for convenience of explanation, the length direction of the virtual central axis O (see FIG. 3) of the core body 21 is referred to as an axial direction AX. Further, a direction radially extending along a cross section orthogonal to the central axis O around the central axis O is referred to as a radial direction RA, and a direction around the core body 21 is referred to as a circumferential direction CR. With the core 20 mounted on the generator 1, the axial direction AX, the radial direction RA, and the circumferential direction CR coincide with the axial direction, radial direction, and circumferential direction of the generator 1, respectively. Hereinafter, the core 20 is demonstrated as what is mounted in the generator 1. FIG.

The core 20 has a plurality of teeth 22 extending from the core body 21 to the outside in the radial direction RA in addition to the annular core body 21 described above (see FIG. 3). In the present embodiment, twelve teeth 22 are provided at equal intervals in the circumferential direction of the core body 21.

The bobbin 30 is formed in a ring shape with, for example, resin and has a divided structure that is divided in half in the axial direction. Among these, FIG. 4 shows one bobbin divided body 30A of the divided structure. In the state where the two bobbin divided

bodies

30A and 30B (see FIG. 2) are combined with each other, the bobbin 30 has an annular bobbin body 31, a plurality of insulating portions 32 provided outside the radial direction RA of the bobbin body 31, and bobbins A substantially arc-shaped projecting portion 100 partially projecting from the main body 31 in the radial direction, and a molded body 101 (described later) projecting from the projecting portion 100 in the axial direction are integrally provided. In the present embodiment, twelve insulating portions 32 are provided at equal intervals in the circumferential direction CR of the bobbin main body 31.

As shown in FIG. 4, the overhang portion 100 is formed integrally with one bobbin divided body 30A. The molded body 101 is formed so as to protrude in the axial direction from a part of the protruding portion 100. A metal plate forming the core 20 shown in FIG. 2 is laminated on the one bobbin divided body 30A, and the laminated body is assembled so as to be sandwiched between the other bobbin divided bodies 30B. At this time, each metal plate is formed with a hole AN through which the molded body 101 passes. Thereby, the molded object 101 will be in the state which penetrated the core 20 along the axial direction. Note that the two bobbin divided

bodies

30A and 30B are left and right except for the structure in which the molded body 101 is protruded from one bobbin divided body 30A.

Hereinafter, a description will be given in a state in which one bobbin is configured by assembling two bobbin divided

bodies

30A and 30B.

The bobbin body 31 of the bobbin 30 faces the core body 21, and each of the plurality of insulating portions 32 faces each of the plurality of teeth 22, and the one surface 23 in the axial direction AX of the core 20 so as to sandwich the core 20. It is provided on the side (crank cover side) and the other surface 24 side (crankshaft side).

As shown in FIG. 1, the insulating part 32 has a first cover part 41, a second cover part 42, and a connection part 43. The first cover portion 41 is formed in a plate shape so as to extend outward from the bobbin main body 31 in the radial direction RA, and covers one side of the core 22 in the circumferential direction of the teeth 22. The second cover part 42 is formed in a plate shape and covers the other side of the core body 21 of the tooth 22 in the circumferential direction RA. The connection portion 43 is a connection portion between the vicinity of the end portion 411 of the first cover portion 41 on the bobbin main body 31 side and the end portion 421 of the second cover portion 42 on the bobbin main body 31 side, and the shape of the core 20 Combined with resin molding.

The end 412 of the first cover portion 41 opposite to the bobbin main body 31 and the end portion 422 of the second cover portion 42 opposite to the bobbin main body 31 are parallel to the axis of the bobbin main body 31. A plate-like stopper 44 extending in the surface direction is formed. A plate-like stopper 33 extending in the plane direction parallel to the axis of the bobbin main body 31 is formed in the vicinity of the insulating portion 32 of the bobbin main body 31.

The winding part (power generation coil) 50 is formed of, for example, an aluminum wire and is wound around the insulating parts 32 of the two bobbins 30. In the present embodiment, one insulating-coated aluminum wire is wound around each of the plurality of insulating portions 32 a predetermined number of times, and a plurality of winding portions 50 are formed on each tooth 22. The insulation part 32 ensures the insulation between the winding part 50 and the teeth 22 of the core 20. In the present embodiment, the winding portion 50 is wound around the insulating portion 32 while being pulled with a predetermined force. Thereby, the winding part 50 can be tightly wound around the insulating part 32. Here, the winding of the winding portion 50 is suppressed by the stopper 44 and the stopper 33 of the bobbin 30.

As shown in FIG. 2, the core body 21 of the core 20 is fixed to the inside of the engine cover 2 with, for example, bolts or the like. A boss 4 is attached to the end of the crankshaft 3 of the engine (not shown). Therefore, the boss 4 rotates together with the crankshaft 3 during engine operation.

Moreover, the rotor 60 is provided outside the radial direction RA of the stator 10 via a predetermined gap. The rotor 60 includes a cylindrical portion 61 that forms an annular shape in the circumferential direction CR, and a wall portion 64 that closes one opening of the cylindrical portion 61 in the axial direction AX. The cylinder part 61 and the wall part 64 are integrally formed with each other. The boss 4 is fixed to the wall portion 64. A plurality of magnets (permanent magnets) 62 are provided at equiangular intervals along the circumferential direction CR on the inner wall of the cylindrical portion 61. In the present embodiment, a total of twelve magnets 62 are provided so that the directions of their magnetic poles (N pole, S pole) are alternately opposite in the radial direction RA. As shown in FIG. 1, a protrusion 63 is formed on a part of the outer peripheral surface of the cylindrical portion 611.

The wall portion 64 is fixed to the boss 4 so that the cylindrical portion 61 of the rotor 60 is located outside the radial direction RA of the core 20. As a result, the tip of the tooth 22 of the core 20 is positioned to face the magnet 62. The rotor 60 rotates with the crankshaft 3 and the boss 4 during engine operation. When the rotor 60 rotates, an induced electromotive force is generated in the winding part 50 wound around the insulating part 32 covering the teeth 22 facing the magnet 62. As a result, a current is generated in the winding part 50. The electric current generated in the winding part 50 passes through an output cable (wire harness) 5 (see FIG. 1) that connects the winding part 50 and the vehicle-side electric circuit to an electric load such as a battery or a headlamp of the motorcycle. To be supplied. Thus, the generator 1 of this embodiment is an outer rotor type generator.

The rotation sensor 70 is provided outside the radial direction RA of the rotor 60 via a predetermined gap. The rotation sensor 70 outputs a signal corresponding to the rotation position of the protrusion 63 when the rotor 60 rotates. The signal is transmitted to an electronic control unit (hereinafter referred to as “ECU”) (not shown) via the wire harness 71. Thereby, the ECU can detect the rotational position of the rotor 60, that is, the rotational position of the crankshaft 3.

Next, in this generator 1, an electrical connection portion (connection means) 90 between the end portion of the winding portion 50 and the output cable 5 in which the connection mechanism according to the present invention is implemented will be described.

Since the generator 1 according to this embodiment is a single-phase AC generator, the twelve winding portions 50 wound around the twelve teeth are electrically as shown in FIG. They are directly connected to each other and connected to the vehicle-side electric circuit. For this reason, both ends of the series circuit of the winding portions 50, that is, lead-out portions at the beginning and end of winding of the twelve winding portions 50, that is, the lead portions T _B and T _G are the output cable 5 and the ground wire G. It is connected to the. The output cable 5 is connected to the vehicle-side electrical circuit, and the ground wire G is connected to the vehicle-side ground circuit.

The connecting portion 90, as shown in FIGS. 1 and 2, has a structure for connecting lead portion of the battery side and the ground side of the plurality of winding portions 50 T _B, the T _G to each other. The connecting portion 90 is disposed by penetrating predetermined positions of both side surfaces of the core 20, that is, the crank cover side surface 23 and the crankshaft side surface 24 in the axial direction AX. In the case of this embodiment, this penetration position is set at a portion closest to the lead portions T _B and _TG of the plurality of winding portions 50.

A specific arrangement state of the connecting portion 90 is shown in FIG. The connecting portion 90 is fixed to the core 20 in a state of penetrating the core 20 along the axial direction AX, and is formed integrally with the resin molded body 101 (bobbin divided body 30A) having a through hole HL. Terminal 102 as an intermediate connection member that is press-fitted into the through-hole HL of the molded body 101 and is disposed in a fixed state in the through-hole HL leaving both

end portions

122 and 123 outside the core 20. And comprising. Of the

end portions

122, 123 of the terminal 102, connected to one end portion 122 which is located on the side of the crank cover of the engine, by welding the output side of the lead portion T _B of the plurality of winding portions 50, a crank The copper output cable 5 connected to the battery B is soldered to the other end 123 located on the shaft side. Incidentally, in this first embodiment, the lead portion T _B of the output side is connected bent in the axial direction AX of the core 20 to the terminal 102.

This output cable 5 is opposite to the core 20 via holes CH and CH ′ (see FIGS. 1, 3 and 4) penetrating the core 20 and the overhanging portions 100 of the bobbin 30 (bobbin divided bodies 30 A and 30 B). Pulled out to the side and connected to the vehicle side electrical circuit.

The lead portion _TG on the ground side is connected to a metal terminal 104 (see FIG. 5) for grounding, and the terminal 104 similarly has holes AM and AM ′ (FIG. 3) through the core 20 and the bobbin divided body 30A. , 4), and is driven into the core 20 (not shown). As a result, the core 20 is grounded. The lead portion _TG on the ground side is similarly bent in the axial direction AX of the core 20 and connected to the terminal 104.

As shown in FIG. 4, the molded body 101 is integrally formed with the overhanging portion 100 of the bobbin divided body 30 A and penetrates and is fixed at a predetermined position of the core 20. As shown in FIG. 8, a through hole HL is formed in the molded body 101 along its length direction. Further, a plate-like protrusion 112 A is formed on the surface of the projecting portion 100 opposite to the molded body 101. The protrusion 112A functions as a screen for preventing coil collapse. A substantially circular bank 112B is formed around the opening OP where the through hole HL of the overhanging part 100 is opened, and a guide groove 112C extending obliquely in the radial direction from a part of the bank 112B is formed. Yes. The guide groove 112C is to guide the lead portion T _B of the output side of the winding unit 50 described above, is positioned the tip portion to the opening OP. The guide groove 112C may be formed in a hole shape.

Further, as shown in FIGS. 7A and 7B, the terminal 102 is a member made of an elongated, substantially plate-like conductive material, and is integrated with the body 121 and both ends of the body 121. The

connection parts

122 and 123 formed in the. One connecting portion 122 is formed with a protruding portion 122A for welding, which is semicircular when viewed from the side, that is, extending in a direction orthogonal to the axial direction AX of the core 20. The other connecting portion 123 is formed at a terminal portion that is divided into two as shown in the figure. In addition, two protrusions 121A for pressing and a plurality of protrusions 121B for biting into the first (second) molded body 101 are formed on the side surface of the body 121.

For this reason, by inserting the two projections 121A while inserting the connection portion 123 at one end of the terminal 102 into the through hole HL of the molded body 101, the plurality of projections 121B bite into the resin portion of the molded body 101 and fixed. Is done. That is, the molded body 101 is inserted and fixed in the core 20, and the terminal 102 is inserted and fixed in a state where the connecting

portions

122 and 123 at both ends protrude from the through hole HL of the molded body 101. At this time, one connecting portion 122 protrudes from the surface 23 of the core 20 on the one surface 23 side of the core 20, that is, on the crank cover side.

As described in FIG. 5, a plurality of winding portions 50 constitute a series circuit, the lead portion of the end winding start and the winding at both ends T _B, and forms a T _G. The lead portions T _B and _TG are covered with an insulating film, but are made of aluminum like the winding body. The lead portion T _B is drawn from the group of the winding portion 50, as shown in FIG. 9, which is housed in the guide groove 112C formed in the extended portion 100 of the core 20 is guided. A connecting portion 122 for welding the terminal 102 is located in the through hole HL. Therefore, the protrusion 122A of the connecting portion 122, and along bending the tip of the lead portion T _B which has been guided in the axial direction AX, connecting both by welding. The welding is, for example, resistance welding, and Joule heat due to the current concentrated on the projections 122A, by the application of pressure to the connecting portion 122 and the lead portion T _B, both are welded together (see FIG. 6).

As the material of the terminal 102, a metal other than aluminum, such as iron or brass, is generally used in consideration of soldering with the output cable 5. In this case, the welded portion is in contact with different metals, and is extremely susceptible to corrosion in a corrosive environment. For this reason, the protection part 130 is formed in the welded part mentioned above by apply | coating a protective agent for corrosion prevention and protection. As the protective agent, epoxy resin or silicon resin is used.

The protective agent, that is, the protective part 130 may be applied so as to cover the entire connection portion as shown in FIG. 6, or may be applied as shown in FIGS. 10 (A) and 10 (B). Good. That is, the protective agent may be applied so as to cover between the projections 122A and the lead portion T _B (FIG. (A)), including the lead portion T _B, covering only the upper protrusion 122A It may be applied as follows.

Thus, according to the magnet generator of the present embodiment, various effects can be obtained as follows.

First, since aluminum wires are used for the wires forming the plurality of winding portions 50 of the stator (armature) 10, the generator itself can be made lighter and the parts cost is also significantly higher than when copper wires are used. Can be reduced.

The lead portion T _B drawn out from a plurality of winding portions 50 are the aluminum, it is preferable to be bonded to the terminal 102 by welding instead of soldering.

Further, the molded body 101 was passed through the core 20, and both end

portions

122 and 123 were separated on both sides of the core 20. For this reason, the welding part and solder part with respect to the both ends 122 and 123 of the terminal 102 can be isolated from each other. Therefore, compared with the case where such welding and soldering parts are placed on either side of the core, it is possible to secure a wider working area for welding and soldering, leading to improved workability.

Furthermore, since the welding and soldering parts are isolated from each other with the core 20 in between, spatter adheres to the solder part, and damage to the welded part due to the soldering work is remarkably reduced. As a result, the reliability of electrical bonding at the bonding site is increased. This can almost certainly prevent the protective agent from adhering to the soldered portion when the protective agent is applied to the welded portion.

Further, when the welding, as shown in FIG. 9, the lead portion T _B which has been withdrawn from the guide groove 112C is guided by bending in the axial direction AX. For this reason, the space which can be used for arrangement | positioning of electrode EL1, EL2 for welding expands by the part which provided 112 C of guide grooves. Further, the guide groove 112C, a lead portion _{T B} is more firmly fixed.

Furthermore, a plate-like protrusion 112A is formed on the surface of the projecting portion 100 of the bobbin divided body 30A opposite to the molded body 101, that is, between the end portion of the terminal 102 and the winding portion 50. The protrusion 112A prevents spatter scattered during welding from adhering to the winding portion 50 of the stator 10.

Furthermore, a substantially circular bank 112B is formed around the opening OP through which the terminal 102 is inserted, through which the through hole HL of the overhanging portion 100 opens. Therefore, when a protective agent is applied to the welded portion, the protective agent does not flow out to the surroundings, but remains in the welded portion.

In the above embodiment, to connect the lead portion T _B of the winding section 50 in a crank cover side has been to make a connection to the battery and ground at the crankshaft side, the positional relationship of which was the opposite May be. That is, the head portion of the molded body 101 may be positioned on the other surface 24 side of the core 20, and the tail portion of the molded body 101 may be positioned on the one surface 23 side. Accordingly, the direction of the terminal 102 is also reversed. This increases the degree of design freedom.

In the embodiments described above, the connection structure of the lead portion T _B for output of the plurality of winding portions 50 may also be applied to the lead portion T _G of the ground side.

Furthermore, in the above-described embodiment, as shown in FIG. 1, the example in which the connection portion 90 is arranged on the center line of the teeth is shown, but although not shown in detail, the connection portion is provided on the center line between adjacent teeth. 90 may be arranged.

Furthermore, in another embodiment of the present invention, the rotor may be provided inside the stator. In this case, the rotating electrical machine can be used as an inner rotor type generator or motor. In another embodiment of the present invention, the rotating electrical machine may be configured to fix the rotor and rotate the stator relative to the rotor. Thus, the present invention is not limited to the above-described embodiments, and can be applied to various forms without departing from the gist thereof.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. Note that the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only differences from the first embodiment will be described below.

In the above-described first embodiment, an example of applying only the lead portion T _B for outputting a connection structure of a lead portion of the plurality of winding portions 50, as shown in FIG. 11, in the second embodiment Applies the connection structure to the lead portion _TG on the ground side of the plurality of winding portions 50.

Further, in the above-described first embodiment, an example of connecting the lead portion T _B of the winding section 50 in a crank cover side, as shown in FIG. 12, connected by a crankshaft side in the second embodiment is doing.

Furthermore, since in the second embodiment is applied to a connection structure lead portion T _B for _output to both the ground side of the lead portion T _G, as shown in FIG. 14, the molded body 101 having a through hole HL Are protruded from the overhanging portion 100 of the bobbin divided body 30A in the axial direction AX of the core 20 with a through hole CH 'interposed therebetween, and as shown in FIG. Holes AN and AM that pass through the molded body 101 are formed.

Further, in the above-described first embodiment, an example that is connected to the terminal 102 by bending the output side of the lead portion T _B in the axial direction AX of the core 20, 11, 12, 17 and 18 as shown, in the second embodiment, the lead portion T _B for _output, both the ground side of the lead portion T _G is not bent in the axial direction AX of the core 20, a direction perpendicular to the axial direction AX That is, it extends parallel to the overhanging portion 100 of the bobbin divided body 30 A and is connected to the

terminals

102 and 104.

Here, the configuration of the terminal 102 shown in the second embodiment is basically the same as the configuration of the terminal 102 shown in the first embodiment, but a welding projection 122A formed on one connecting portion 122 thereof. However, it extends in a semicircular shape as viewed from above, that is, in the axial direction AX of the core 20. The other terminal 104 has the same configuration.

As in the first embodiment, in the second embodiment, a plate-like protrusion 112A and a substantially circular bank 112B are formed around the opening OP of the connection portion 90. In the first embodiment, the guide groove 112C extending obliquely in the radial direction from a part of the bank 112B is formed, but in the second embodiment, the lead portion extends in parallel with the overhanging portion 100. In order to be connected to the

terminals

102 and 104, a protruding portion 112D protruding in the axial direction AX is provided in the overhanging portion 100 adjacent to the protrusion 112A, and a guide groove 112C is provided in the protruding portion 112D, whereby a lead portion and a terminal The connecting portion is positioned in the radial direction and the axial direction. Further, the projection 112D can prevent a welding electrode (not shown) from contacting the core 20 and the bobbin 30.

Furthermore, in the second embodiment, a second protrusion 112E is provided adjacent to the guide groove 112C. The second protrusion 112E can be used as a guide when the lead portion of the winding portion 50 is pulled and bent, and can also be used as a height guide for the coating nozzle when the protective agent is applied.

1 Magnet generator 10 Stator (armature)
20 Core 21 Core body 23 One surface 24 in the axial direction of the core 24 The other surface 30 in the axial direction of the core 30 Bobbin 50 Winding portion 60 Rotor (rotating body)
90 Connection part (connection means)
101 Molded body 102 Terminal (intermediate connection member)

112C guide grooves

122 and 123 connecting portions HL through hole _T B, _{T G} lead portion G grounding wire

Claims

A rotor having a plurality of magnets rotatably supported and arranged circumferentially;
A stator having a core disposed with a gap of a predetermined distance between the rotor and a core formed with a winding portion;
In the magnet generator configured to output the power generation output of the winding portion via an output cable,
At least one of the winding part and the output cable is formed of an aluminum wire,
The lead portion of the winding portion and the output cable are connected to each other via an intermediate connection member arranged through the core in the axial direction,
The connecting portion between the intermediate connecting member and the lead portion, and the connecting portion between the intermediate connecting member and the output cable are respectively located on both sides in the axial direction of the core.
This is a magnet generator.
The intermediate connection member has a shape into which the intermediate connection member can be inserted, and includes a molded body having electrical insulation,
2. The magnet generator according to claim 1, wherein the molded body is passed through the core along the axial direction with the intermediate connecting member inserted into the molded body.
The magnet generator according to claim 1 or 2, wherein the intermediate connection member is a metal member excluding an aluminum material, and is formed of a member having electrical conductivity.
The magnet generator according to any one of claims 1 to 3, wherein the intermediate connecting member is formed of iron or a copper alloy.
The magnet generator according to any one of claims 1 to 4, wherein the winding portion is formed by using an aluminum wire as a wire rod.
The magnet generator according to claim 5, wherein the output cable is formed of a copper wire.
The magnet generator according to any one of claims 1 to 6, wherein the connection between the aluminum wire and the intermediate connection member is connected by welding.
The stator has a bobbin that holds the core;
The winding portion is formed of the aluminum wire,
The bobbin has a guide groove or a guide hole for guiding the tip of the lead portion of the aluminum wire forming the winding portion toward the end of the intermediate connection member inserted into the molded body. The magnet generator according to claim 2, wherein the generator is a magnetic generator.
The magnet generator according to claim 8, wherein the bobbin has a plate-like protrusion between an end portion of the intermediate connection member and the winding portion.
The magnet generator according to any one of claims 8 to 9, wherein the bobbin has a substantially circular bank around an opening through which the intermediate connecting member is inserted.
The bobbin is provided with a protrusion that protrudes in the axial direction of the core adjacent to an opening through which the intermediate connecting member is inserted, and the guide groove or guide hole is provided in the protrusion. Item 11. The magnetic generator according to any one of Items 8 to 10.
The magnet generator according to any one of claims 8 to 11, wherein the bobbin is provided with a second protrusion adjacent to the guide groove or guide hole.
The magnet generator according to any one of claims 7 to 12, wherein a protective agent is applied to a welded portion between the aluminum wire and the intermediate connecting member.
14. The magnet generator according to claim 13, wherein the protective agent is an epoxy resin or a silicon resin.
The magnet generator according to claim 2, wherein the formed body is formed integrally with the core.
The stator includes an annular core and a plurality of teeth extending from the core in the radial direction of the core,
The winding portion includes a plurality of coils wound around each of the plurality of teeth and electrically connected to each other,
The magnet generator according to any one of claims 1 to 15, wherein the lead portion is a lead portion taken out from the plurality of coils.
The magnet generator according to claim 16, wherein the plurality of coils are electrically connected to each other in series.