JPH10127026A - Outer rotor multi-pole generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manhour for assembling work by connecting coils to a plurality of fixed terminals, embedding a part of fixed terminals in a bobbin for integral connection to the bobbin, and connecting a lead wire to the respective fixed terminals. SOLUTION: A plurality of coils 20 are connected to a bobbin 16, and a part of fixed terminals 27 for a coil 20 are embedded in the bobbin 16 for integral connection. One end of the respective coils 20 is connected to the fixed terminal 27, and a terminal 28 connected to a lead wire 26M, for example, by crimping is connected to the fixed terminal 27 detachably. One end of respective DC coils 21 corresponding to three protruding poles 1519 to 1521 is connected to the fixed terminal 27, and a terminal 28 connected to the lead wire 26D, for example, by crimping is connected to the fixed terminal 27 detachably. It is thus possible to mechanize the connection of the coil 20 to the fixed terminal 27 for reduction in manhour for assembling work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer rotor type multipolar generator, and more particularly to a stator made of synthetic resin having a plurality of salient poles provided on an outer periphery of a stator core and covering the salient poles with the stator core. A coil is wound via a bobbin, a bowl-shaped rotor yoke surrounding the stator core is fixed to one end of a rotating shaft passing through the stator core, and magnets opposed to the salient poles are fixed to the inner periphery of the rotor yoke, and lead It relates to an outer rotor type multipolar generator in which a wire is connected to the coil.

[0002]

2. Description of the Related Art Conventionally, in such an outer rotor type multi-pole generator, as shown in FIG.
6 ", and one end of the coil 10 is connected by soldering or the like to the tip of a pin terminal 36 which is connected to the lead wire 26 and fitted into each pin insertion tube 35.

[0003]

However, in the above-mentioned conventional device, the pin terminals 36 are fitted into the pin insertion tube portions 35 by an operator, and the tip positions of the pin terminals 36 are not fixed. Therefore, connection of one end of the coil 10 to the tip of the pin terminal 36, that is, the coil 10
Has to be manually wound around one end of the pin terminal 36 and soldered, and the number of assembly steps is relatively large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an outer rotor type multipolar generator capable of easily connecting one end of a coil and contributing to a reduction in assembling work steps. Aim.

[0005]

According to the first aspect of the present invention, a plurality of salient poles are provided on an outer periphery of a stator core, and the salient poles are covered with the stator core. A coil is wound via a resin bobbin, a bowl-shaped rotor yoke surrounding the stator core is fixed to one end of a rotating shaft penetrating the stator core, and magnets facing the salient poles are fixed to the inner periphery of the rotor yoke. In the outer rotor type multipolar generator in which a lead wire is connected to the coil, a plurality of fixed terminals for connecting the coil are partially connected to the bobbin by partially burying the fixed terminal in the bobbin. Lead wires are connected.

According to this configuration, the position of each fixed terminal on the bobbin, that is, the position of connection of the coil to each fixed terminal can be fixed, thereby facilitating connection of the coil to the fixed terminal and mechanizing. As possible,
The number of assembling work steps can be reduced.

According to the second aspect of the present invention, the bobbin is provided with a plurality of connection holes which open in one end on the rotor yoke side and close the other end side and extend in parallel with the axis of the rotating shaft. The fixed terminal penetrating the closed end of the hole is integrally connected to the bobbin with one end protruding on the opposite side to the rotor yoke and the other end protruding into the connection hole, and a coil is connected to one end of each fixed terminal. A lead wire is connected to a terminal which is detachably connected to the other end of each fixed terminal in each of the connection holes.

According to this configuration, the connection between the terminals is easy, so that the connection between the coil and the lead wire is easy, and the number of assembling work steps can be further reduced.

According to the third aspect of the present invention, a fixed terminal is integrally connected to the bobbin on a side opposite to the rotor yoke, and a coil and a lead wire are connected to mutually different portions of the fixed terminal.

Therefore, it is possible to dispose the lead wire on the side opposite to the rotor yoke with respect to the stator core, and it is not necessary to secure a space for disposing the lead wire between the stator core and the rotor yoke, and to arrange the rotor yoke closer to the stator core. It is possible to reduce the size of the generator as a whole.

According to the fourth aspect of the present invention, the stepped portion which engages with one end of the magnet is formed on the inner peripheral surface of the rotor yoke, so that it is not necessary to use a positioning jig and the inner peripheral surface of the rotor yoke is not required. The fixed position of the magnet on the surface can be fixed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an outer rotor type multipolar generator, FIG. 2 is a plan view of a stator, and FIG. FIG. 3 is a sectional view taken along line 3-3.

First, in FIG. 1, a housing 1 of the outer rotor type multipolar generator is formed in a dish shape, and is fixed to a sleeve 2 penetrating the center of the housing 1. In the sleeve 2, a rotating shaft 4, which is a crankshaft of an engine (not shown), is coaxially arranged with a bearing 5 and an oil seal 6 interposed between the sleeve 2 and the sleeve 2.
A rotor yoke 7 formed in a bowl shape is coaxially fastened to one end of the rotating shaft 4 with bolts 8, and a plurality of magnets 9 are fixed to the inner periphery of the rotor yoke 7.

[0015] Between the housing 1 and the rotor yoke 7,
A plurality of stators 12 are fixed to one end of the sleeve 2 with, for example, a pair of bolts 11. The magnets 9 fixed to the inner periphery of the rotor yoke 7 form an air gap with the stator 12. The stator 12 is coaxially surrounded.

Referring to FIGS. 2 and 3, the stator core 13 of the stator 12 is composed of a plurality of core plates stacked on each other, and is provided at one end of the sleeve 2. Disk-shaped base 14 having, at its center, a fitting hole 17 for fitting a fitting protrusion 2a having a circular shape.
A plurality of, for example, 23 _first to _twenty- third salient poles 151 to 1523 formed in a substantially T-shape protrude at an interval from each other.

The stator core 13 is a bobbin 1 made of synthetic resin.
The bobbin 16 is partially covered with
A central portion of the base portion 14 including a portion where a pair of mounting holes 18 for inserting a pair of bolts 11 for connecting the stator core 13 to the sleeve 2 are provided;
And the distal end portion of the 1 salient poles 15 ₁ to 15 _21, and the distal end side of the 22 salient poles 15 _22, so as to expose the entire first 23 salient poles 15 _23, so as to cover the stator core 13 over between its two ends It is formed.

In such a stator core 13, the first to the 23rd salient poles 15 ₁ to 15 ₂₃ are the first salient poles 15 ₁ to 15 _23.
18 salient poles 15 ₁ to 1 from ₁ up to the 18 salient poles 15 ₁₈
5 _18, main coils 20 and 20 via a bobbin 16
... it is wound respectively, the three salient poles 15 _{19-15 21} from the 19 salient poles 15 ₁₉ to 21 salient poles 15 ₂₁ bobbin 1
., Respectively, are wound around the coil ₂₂ , and a single-phase control power supply coil 22 is attached to the 22nd salient pole 15 ₂₂ via a synthetic resin bobbin 24 separate from the bobbin 16. There is wound, the first 23 salient poles 15 _23, an ignition coil 23 of the single phase and the bobbin 16 and 24 via a synthetic resin bobbin 25 are separate it is wound.

The main coils 20 and 20 corresponding to the 18 salient poles 15 ₁ to 15 ₁₈ ... is for obtaining the AC power of the three phases, summarized in three sets each of six as a group,
Each set of main coils 20, 20 at one end 20a ... are connected to the fixed terminals 27 ..., terminal 28 ... connected is detachably connected to the fixed terminals 27 ..., for example, by crimping the lead wire 26 _M ... . In addition, each main coil 20, 20
Are grounded by contact with the stator core 13.

DC corresponding to the three salient poles 15 ₁₉ to 15 ₂₁
The coils 21, 21, 21 are rectified by a full-wave rectifier circuit (not shown) provided outside the housing 1,
For example, for obtaining a DC electric power for charging the battery, the DC coils 21 ... end 21a ... are connected to the fixed terminals 27 ..., terminal 28 connected by, for example crimped to the leads 26 _D ... ... Are the fixed terminals 27 ...
To be detachably connected to. The other ends of the DC coils 21 are commonly connected to each other.

Both ends of the control power supply coil 22 are fixed terminals 2
7 and 27 and the lead wire 26 _C, 26_CParable
The terminals 28, 28 connected by crimping are fixed terminals 2
7, 27 are detachably connected. Of the ignition coil 23
One end is connected to the fixed terminal 27 and the lead wire 26_IAnd
For example, the terminal 28 connected by crimping is attached to the fixed terminal 27.
The other end of the ignition coil 23 is grounded.
You.

The fixed terminals 27 are integrally molded with the bobbin 16 when the bobbin 16 is formed. That is, the bobbin 16, a plurality of connecting portions 29 that passes through the stator core 13 over its stacking direction all the layers so as to couple the portion covering both sides of the stator core 13 in the inner side of each salient pole 15 _{1-15 23} ... The connecting portions 29 are provided with connection holes 30 that open one end on the rotor yoke 7 side and close the other end side and extend in parallel with the axis of the rotating shaft 4. …
The connecting holes 30 are integrally connected to the bobbin 16 so as to pass through the closed ends of the connecting holes 30.

One end 27a of each fixed terminal 27 protrudes from the bobbin 16 on the side opposite to the rotor yoke 7, and the other end 27a of each fixed terminal 27 is formed in, for example, a rectangular flat plate-like connection hole 30. ... rushed into. Moreover, one end 27a of each fixed terminal 27 is formed with a triangular cutout 3 for connecting one end 20a, 22a of each coil 20 to 23.
Are provided, and by inserting one ends 20a, 22a of the coils 20 to 23 into the cutouts 31 of the coils 20, the ends 20a, 22a of the coils 20 to 23 are peeled off the covering portions. Are connected to one ends 27a of the fixed terminals 27.

On the other hand, the terminals 28 are, for example, so-called Faston flag terminals, and the other ends 27 of the fixed terminals 27.
a are detachably connected in each connection hole 30.

The rotor yoke 7 is formed by drawing a metal plate. However, it is difficult to improve the accuracy of the inner diameter and the roundness of the rotor yoke if the drawing is performed as it is. A relatively large air gap must be set between them. Therefore, sizing is performed on the inner surface of the rotor yoke 7 to reduce the air gap. At the time of the sizing process, a stepped portion 7a formed by burrs is formed on the inner surface of the rotor yoke 7. The step 7a is formed at a position where one end of each magnet 9 is engaged.

Next, the operation of the first embodiment will be described.
Then, the coils 20 to 23 are connected to the bobbin 16.
A plurality of fixed terminals 27 are partially buried in the bobbin 16.
The fixed terminals 27
... each lead wire 26_M, 26 _D, 26_C, 26_IIs connected
Is done. Thereby, each fixed terminal 2 on the bobbin 16
7 position, that is, each fixed terminal of each coil 20 to 23
27 can be fixed at a fixed position. did
Therefore, as in this embodiment, one of the coils 20 to 23
Ends 20a, 21a... Are peeled off at the same time.
To the fixed terminals 27.
To facilitate the connection of each coil 20-23 to
Automatic winding of one end 20a, 21a ... of the coils 20 to 23
Later, the soldering is automatically performed and the fixed terminals 2
It is possible to mechanize the connection to 7 ...
The number of steps can be reduced.

Further, a plurality of connection holes 30 with one end open on the rotor yoke 7 side and the other end side closed are provided on the bobbin 1.
6, fixed terminals 27 penetrating the closed ends of the connection holes 30 are provided with one end 27a on the opposite side to the rotor yoke 7.
, And the other end 27b is inserted into the connection hole 30 so as to be integrally connected to the bobbin 16, and each fixed terminal 27
Are connected to the other ends 27b of the... In the connection holes 30 so as to be detachably connected in the connection holes 30. The lead wires _26M , _26D , _26C , 2
6 _I are connected, so that the fixed terminals 27.
... Connection between the members is easy, and the number of assembly steps can be further reduced.

The fixed terminals 27 and the terminals 28
... position for interconnecting the, that is, the position of each connection hole 30 ... are inner position than the salient poles 15 ₁ to 15 _23,
Since the position does not affect the formation of the magnetic flux, the connection hole 3
By providing 0, the performance of the generator is not adversely affected.

[0029] As terminals 28 ..., when using the so-called Faston flag type terminals, leads toward the bobbin 16 side to the rotor yoke 7 side ... 26 _M, 26 _D, 2
6 _C and 26 _I can be minimized from rising, and the rotor yoke 7 can be brought as close as possible to the stator 12 to reduce the size of the entire generator.

Further, since a step 7a which engages with one end of the magnets 9 is formed on the inner peripheral surface of the rotor yoke 7, a positioning jig for positioning the magnets 9 with respect to the rotor yoke 7 is used. This makes it unnecessary to fix the position where the magnets 9 are fixed to the inner peripheral surface of the rotor yoke 7, thereby preventing variations in the performance of the generator.

FIG. 4 shows a second embodiment of the present invention, in which parts corresponding to those of the first embodiment are denoted by the same reference numerals.

On the side of the synthetic resin bobbin 16 'covering the stator core 13', which is opposite to the rotor yoke 7, for example, when the bobbin 16 'is molded, a part of the bobbin 16' is superimposed after molding. The plurality of fixed terminals 32 are integrally connected by crushing with a sound wave or the like. One end 32a of these fixed terminals 32 ...
Are connected to one end 20a of the main coil 20, one end 21a of the DC coil 21, one end of the control power supply coil 22 and one end of the ignition coil 23, respectively. , 22,..., 23, the other end 23b of the terminal 23,.
Are connected to the respective lead wires 26 _M , 26 _D , 26 _C , 26 _I.

According to the second embodiment, in addition to the same effects as those of the first embodiment, the lead wires 26 _M , 26 _D , 26
_C, it is possible to place on the opposite side of the 26 _I rotor yoke 7 with respect to the stator core 13 '. Accordingly, it is not necessary to secure a space for arranging the lead wires 26 _M , 26 _D , 26 _C , 26 _I between the stator core 13 ′ and the rotor yoke 7, and the rotor yoke 7 is arranged closer to the stator core 13 ′, so that the generator The overall size can be reduced, and the stator core 1
The connection work can be performed only on one side of 3 ', so that the assembling workability can be further improved.

Moreover, the rotor yoke 7 is connected to the stator core 1
3 ', the rotor yoke 7 can be formed relatively shallow, and the rotor yoke 7
The dimensional accuracy can be improved by the drawing process, and the material required for the rotor yoke 7 can be minimized.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0036]

As described above, according to the first aspect of the present invention, the connection position of the coil to each fixed terminal can be fixed, so that the connection of the coil to the fixed terminal is facilitated and mechanized. By doing so, the number of assembly work steps can be reduced.

According to the second aspect of the present invention, the connection between the fixed terminal and the terminal is facilitated, the connection between the coil and the lead wire is facilitated, and the number of assembling work steps can be further reduced.

According to the third aspect of the present invention, it is possible to dispose the lead wire on the side opposite to the rotor yoke with respect to the stator core, and it is not necessary to secure a space for disposing the lead wire between the stator core and the rotor yoke. This makes it possible to reduce the size of the entire generator by disposing the rotor yoke closer to the stator core, and to form the rotor yoke with a minimum amount of material with high accuracy.

Further, according to the fourth aspect of the present invention, it is possible to determine the fixed position of the magnet on the inner peripheral surface of the rotor yoke without using a positioning jig.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an outer rotor type multipolar generator according to a first embodiment.

FIG. 2 is a plan view of a stator.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a longitudinal sectional view of a main part of a second embodiment.

FIG. 5 is a longitudinal sectional view showing a conventional connection structure.

[Explanation of symbols]

13, 13 '... stator core 15 _{1-15 23} ... salient poles 16, 16', 24, 25 ... bobbins 20, 21, 22, 23 ... coil _{26 C, 26 D, 26 I} , 26 _M: Lead wire 27, 32: Fixed terminal 28: Terminal 30: Connection hole

Claims (4)

[Claims] 1. A plurality of salient poles on the outer periphery of the stator core (13, 13 ') (15 ₁ to 15 ₂₃₎ are provided, on their salient poles (15 ₁ to 15 _23), covering the stator core (13) Coils (20, 21, 22, 23) are wound via synthetic resin bobbins (16, 16'24, 25),
Rotary shaft (4) penetrating through stator core (13, 13 ')
A bowl-shaped rotor yoke (7) surrounding the stator core (13, 13 ') is fixed to one end of the
₁ to 15 ₂₁ ) are fixed to the inner periphery of the rotor yoke (7) and the lead wires (26 _M , 2
_{6 D, 26 C, 26 I} ) is the coil (20,21,2
2 _and 23), a plurality of fixed terminals (27, 32) for connecting the coils (20 _, 21 _, 22 _, 23) are partially connected to the bobbins (16, 16 '). Buried in the bobbin (16,1
6 ') and their fixed terminals (27, 3
2) In the lead wire ( _26M , _26D , _26C , _26I )
Is connected to the outer rotor type multipolar generator. 2. The bobbin (16) is provided with a plurality of connection holes (30) that open at one end on the rotor yoke (7) side and close the other end side and extend in parallel with the axis of the rotating shaft (4). The fixed terminal (27) penetrating the closed end of the connection hole (30) has one end protruding on the opposite side to the rotor yoke (7) and the other end protruding into the connection hole (30) to form a bobbin. (16) and one end of each fixed terminal (27) with a coil (20, 21, 22, 23).
Are connected to the terminals (28), which are detachably connected in the connection holes (30) to the other end of each fixed terminal (27), and lead wires ( _26M , _26D , _26C , _26I ). The outer rotor type multipolar generator according to claim 1, wherein the outer rotor type multipole generator is connected. 3. A fixed terminal (32) is integrally connected to the bobbin (16 ') on the side opposite to the rotor yoke (7), and coils (20, 21) are provided at different positions of the fixed terminal (32). , 22, 23) and lead wires (26 _M ,
_{26 D, 26 C, 26 I} ) an outer rotor type multipolar generator according to claim 1, wherein the are connected. 4. The outer rotor type multipolar generator according to claim 1, wherein a step (7a) is formed on an inner peripheral surface of the rotor yoke (7) so as to engage with one end of the magnet (9). .