JPH1118345A - Stator of rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply connect winding ends of stator coils wound around a coil bobbin. SOLUTION: In this stator, stator coils 4 are wound around a coil bobbin 5 fixed to a stator core 3 of a rotating electric machine, and the respective stator coils 4 of the same phase of the stator coils 4 are connected through conductor. A winding start terminal 4a or a winding end terminal 4b of the stator coil 4 is fixed to a flange of the coil bobbin 5 and formed in a disk by using insulator. A wire connection plate 11 is provided with a plurality of circular arc grooves in the radial direction on one end surface and insertion holes connecting the trenches on the other end surface. Terminal segments 16a, 18a, 19a having U-shaped grooves 16b, 18b, 19b are installed on the side surface of a belt conductor. Conductive members 16, 17, 18, 19 for the respective phases wherein the belt conductor is inserted in the grooves of the wire connection plate 11 and the terminal segments 16a, 18a, 19a are protruded from the insertion holes are installed. As a result, the winding ends of the stator coils can be simply connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding connection structure of a stator incorporated in a rotating electric machine.

[0002]

2. Description of the Related Art A conventional stator of a rotating electric machine is constructed as shown in FIGS. In the figure, reference numeral 30 denotes a rotating electric machine, which mainly includes a frame 31, a rotor 32, and a stator 33 of the rotating electric machine 30. The frame 31 is formed in a cylindrical shape, and brackets 3 are provided at both ends.
4, 35 are attached. In the rotor 32, bearings 36 and 37 are attached to brackets 34 and 35,
A yoke 39 is fixed to a rotating shaft 38 supported by 6, 37, and a permanent magnet 40 is attached to the outer periphery of the yoke 39. The stator 33 includes a stator core 4 on which magnetic plates are laminated.
1 and a stator winding 42 wound thereon. The connection between the winding start end and the winding end end of the stator winding 42 of the rotating electric machine 30 configured as described above is connected by a connection plate unit 43 as shown in FIGS. 7 and 8. The connection plate unit 43 is a disk-shaped unit body 4 made of synthetic resin.
4 is formed in a C shape on the upper surface, and a lead terminal 45 is provided on one end.
a, 46a, 47a, and a phase-separating conductive member 45, 46, having connection terminals 45b, 46b, 47b on its outer periphery for connecting the winding start end and the winding end of the plurality of stator windings 42, respectively. 47, and the conductive members 45, 4
6, 47 are alternately laminated and fixed with insulating members 48, 49, 50 interposed therebetween. 51 is a common conductive member attached to the unit main body 44. Next, connection work of the stator winding will be described. The phase-separating conductive member 45 is placed on the upper surface of the unit body 44, and the insulating member 48 is placed on the upper surface of the phase-separating conductor 45. Next, the conductor 46 for each phase is mounted on the upper surface of the insulating member 48, and the insulating member 49 is mounted on the upper surface of the conductive member 46 for each phase. Further, the conductive member for distinction 47 is placed on the upper surface of the insulating member 49, and the conductive member for distinction 4
The insulating members 50 are placed on the upper surface of the gate 7 and are alternately stacked. Next, the common conductive member 5 is provided inside the unit main body 44.
1 is fixed to form the connection plate unit 43. The wiring plate unit 43 configured as described above is disposed so as to face one side of the stator core 33, and the stator windings 4 of the stator core 41 are arranged.
For example, one end of a U-phase stator winding is connected to the terminal 45b of the phase-separating conductive member 45 of the connection plate unit 43, and the other end is connected to the common conductive member 51 of the connection plate unit 43. In this manner, one end of the V-phase and W-phase stator windings is connected to the terminal 46 of the phase-separating conductive members 46 and 47 of the connection plate unit 43.
a, 47a, the other end is connected to the common conductive member 51 of the connection plate unit 43, and the winding ends of the stator windings are connected by the connection plate unit 43.

However, the stator winding 42 of the conventional rotary electric machine projects the electric wire at the winding start end or the winding end end of the stator winding 42, and ends the projected electric wire. Conductive member 4 for each phase of wiring plate unit 43
The terminals 45b, 46b, 47 are inserted by inserting the terminals 45b, 46b, 47b of the terminals 5, 46, 47 into the ends of the stator winding 42.
b was fixed by soldering or the like. For this reason, the end of the stator winding 42 in a narrow place must be inserted and connected to the terminals 45b, 46b, 47b of the phase-separating conductive member, and the connection work of the stator winding 42 is complicated. there were. Since the phase-separating conductive member is formed by punching in a C shape, the yield of the material is poor. Therefore, an object of the present invention is to enable the ends of stator windings wound around a coil bobbin to be easily connected to each other.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises winding a stator winding around a coil bobbin mounted on a stator core of a rotating electric machine, and forming an in-phase stator winding. In a stator of a rotating electrical machine, wherein each stator winding is connected via a conductor, an engagement groove provided on a flange of the coil bobbin and holding a winding start end or a winding end of the stator winding, A connection plate formed in a disc shape from a material, having a plurality of arc-shaped grooves on one end surface in a radial direction, and having an insertion hole communicating with the groove on the other end surface, and a U-shaped connection formed on a side surface of the strip-shaped conductor.
A terminal piece having a U-shaped groove is provided, a strip-shaped conductor is inserted into the groove of the connection plate, and a phase-separating conductive member is provided in which the terminal piece protrudes from the insertion hole.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. 1 is a side sectional view of a rotating electric machine showing an embodiment of the present invention, FIG. 2 is a front view of a connection plate, FIG. 3 is a rear view of the connection plate, and FIG. 4 is an enlarged sectional view taken along line AA of FIG. , FIG.
FIG. 3 is an enlarged perspective view of a main part. In the figure, reference numeral 1 denotes an electric motor, and a stator core 3 is attached to a frame 2 of the electric motor 1. A stator winding 4 is wound around the fixed iron core 3. The stator winding 4 is a coil bobbin 5 made of an insulating material.
It is wound around. As shown in FIG. 5, the winding start end 4a and the winding end 4b of the stator winding 4 are fitted into engagement grooves 5b provided in the flange 5a of the coil bobbin 5, and the winding start end 4a of the stator winding 4 is formed. And the winding end 4b is fixed to the collar 5a of the coil bobbin 5. Reference numeral 6 denotes a bracket fixed to the end face of the frame 2. Reference numeral 7 denotes a rotating shaft supported by a bearing 8 attached to the bracket 6, and 9 denotes a yoke attached to the rotating shaft 7, and a permanent magnet 10 is attached to the outer periphery of the yoke 9. Reference numeral 11 denotes a connection plate formed of an insulating material into a cylindrical shape. As shown in FIGS. 2 to 4, one end surface of the connection plate 11 has arc-shaped grooves 12, 13, 14,.
A plurality of holes 15 are provided concentrically, and a plurality of insertion holes (not shown) communicating with the grooves 12, 13, 14 and 15 are provided on the other end surface of the connection plate 11. 16, 17,
Numerals 18 and 19 are conductive members for each phase which are formed in a belt shape from a conductive material and have a plurality of terminal pieces 16a, 17a, 18a and 19a on side surfaces. The terminal pieces 16a, 17a, 18a,
U-shaped grooves 16b and 17 cut into a U-shape are formed in 19a.
b, 18b and 19b are provided. The phase-separating conductive members 16, 17, 18, and 19 are bent in an arc shape and fitted into the grooves 12, 13, 14, 15 of the connection plate 11, and as shown in FIG. The terminal pieces 16a, 17a, 18a, and 19a of 18, 19 are bent outward so as to protrude from the insertion holes. Next, the work of connecting the stator windings of the rotating electric machine will be described. First, wiring board 1
In each of the grooves 12, 13, 14, 15, one of the conductive members 16,
17, 18 and 19 are fitted, and the conductive members 16 and 1
7, 18, 19 terminal strips 16a, 17a, 18a, 19
a from the insertion hole to the back surface of the connection plate 11, and the terminal strips 16 a, 17 a, 18 a, 19 a are connected to the connection plate 1.
1 bent in the radial direction. Next, the winding start end 4a and the ending end 4b of the stator winding 4 are inserted into an engagement groove 5b provided in a flange 5a of the coil bobbin 5. The connection plate 11 to which the phase-separating conductive members 16, 17, 18, and 19 are attached is placed on the collar 5 a of the coil bobbin 5.
The terminal strips 16a, 1 of the phase-separating conductive members 16, 7, 18, 19 attached to the connection plate 11 at the winding start end 4a and the winding end end 4b of the stator winding 4 fitted in the engagement groove 5b of FIG.
7a, 18a, 19a grooves 16b, 17b, 18b, 1
9b, the winding start end 4a and the winding end end 4b of the stator winding 4 and the grooves 16b, 17b, 18b, 19b.
And are connected by soldering. Therefore, the winding start end 4a and the winding end end 4b of the stator winding and the terminal pieces 16a, 17a of the phase-separating conductive members 16, 17, 18, 19,
Connection with 18a and 19a is simplified. Although the embodiment has been described with reference to an electric motor, a generator may be used.

[0006]

As described above, according to the present invention, the stator windings of the respective phases wound on the coil bobbin are connected by the phase-separating conductive members mounted on the connection plate, so that the connection is simplified.
Also, the yield of the material is good.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a rotating electric machine according to an embodiment of the present invention.

FIG. 2 is a front view of a connection plate showing the embodiment of the present invention.

FIG. 3 is a rear view of the connection plate showing the embodiment of the present invention.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3;

FIG. 5 is an enlarged perspective view of a main part showing an embodiment of the present invention.

FIG. 6 is a side sectional view of a conventional rotating electric machine.

FIG. 7 is a cross-sectional view of a conventional connection plate.

FIG. 8 is a plan view of a conventional connection plate.

[Explanation of symbols]

1 motor, 2 frame, 3 stator core, 4
Stator winding, 4a winding start end, 4b winding end end, 5 coil bobbin, 5a flange, 5b engagement groove, 6 bracket, 7 rotating shaft, 8 bearing, 9
Yoke, 10 permanent magnet, 11 connection board, 12,
13, 14, 15 Grooves, 16, 17, 18 Conductive members for different phases, 16a, 17a, 18a Terminal strips, 16b,
17b, 18b U-shaped groove, 19 common conductive member,
19a terminal strip, 19b U-shaped groove

Claims (1)

[Claims] 1. A stator winding (4) is wound around a coil bobbin (5) attached to a stator core (3) of a rotating electric machine, and each stator winding having the same phase as the stator winding (4). (4) a stator of a rotary electric machine connected via a conductor, provided on a collar (5a) of the coil bobbin (5), and a winding start end (4a) or a winding end of the stator winding (4); An engagement groove (5b) for holding the end (4b); and a disc-shaped groove made of an insulating material.
2) having a plurality of (13), (14) and (15) in the radial direction,
A connection plate (11) having an insertion hole communicating with the grooves (12) (13) (14) (15) on the other end surface; and a U-shaped groove (16b) (17b) (1) on the side surface of the strip conductor.
8b) Terminal pieces (16a) (17a) having (19b)
(18a) and (19a) are provided, and strip conductors are inserted into the grooves (12) (13) (14) (15) of the connection plate (11), and the terminal strips (16a) (17a) (18a) (19a)
A conductive member for each phase (16) in which is projected from the insertion hole.
(17) A stator for a rotating electric machine, comprising: (18) and (19). [0001]