JPH09205749A - On-vehicle motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the space factor of a winging and easily connect the end sections of the winding to external conductors by providing a connecting section which is extended outward in the radial direction from one end of a first belt-like section in the length direction and a second belt-like section which is longer than the first belt-like section and extended in the opposite direction and wound around a stator. SOLUTION: A winding 50 is formed of a flat type copper wire and has a first belt-like section which is extended in the length direction and a has a length (b), a connecting section 52 which is extended in the width direction from one end of the section 51, and a second belt-like section 53 which is extended in the length direction from one end of the section 52 and has the same width as the section 51 has and a length (a) (a>b). The winding 50 is positioned to a stator 12 so that the center line 54 which divides the connecting section 52 in the lateral direction can be positioned to the center of the projecting section 16 of the stator 12 in the lateral direction. Therefore, the upper and lower end sections of the winding 50 constituting the coil 18 of a motor 1 can be connected to wiring members 20 and 46 easily, because the end sections are exposed from the coil 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted motor.

[0002]

2. Description of the Related Art Various motors such as motors mounted on engines and motors for moving wipers are mounted on automobiles such as passenger cars and trucks. There are the following methods for winding a winding around the stator of such a motor.

FIG. 13 is a partial cross-sectional view of a first prior art motor 70. The stator 71 of the motor 70 has a ring portion 72 and a plurality of protruding portions 73. Each protrusion 7
3 has a plane T shape. A winding wire 74 made of a copper wire is wound around each protruding portion 73.

FIG. 14 is a partial cross-sectional view of a second prior art motor 75. The motor 75 according to the related art has a stator 71 having the same shape as the stator 71 of the motor 70.
Each of the protrusions 73 of the stator 71 is wound with a winding wire 76 made of a single rectangular strip of rectangular copper wire.

[0005]

[Problems to be Solved by the Invention]
In the conventional motor 70, the space between the windings 73 shown by hatching in FIG. 13 becomes a gap 77 in which the winding 73 cannot be wound, and the space occupancy of the winding 73 is low. There is a point. Further, in the second conventional motor 75 shown in FIG. 14, since the winding 76 has a uniform thickness in the radial direction with respect to the stator 73, the winding 76 is shown with diagonal lines. There is a problem that the clearance 77 is generated and the space occupancy of the winding 76 is low. Further, in the motor 75, as shown in the perspective view of the winding wire 76 in FIG. 15, one end of the winding end of the winding wire 76, which is a long strip, is exposed to the outside, but one end of the winding start is fixed. There is a problem in that it is hidden inside the winding wire 76 wound around the child 71, making it difficult to perform work such as soldering a lead wire from the outside.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to be mounted on a vehicle in which the space occupancy of the winding is improved and the end portion of the winding can be easily connected to an external conductor. It is to provide a motor.

[0007]

According to a first aspect of the present invention, there is provided a vehicle motor, wherein a winding wound around a stator is a rectangular copper wire.
The winding includes a first strip-shaped portion wound around the stator radially inward of the stator, a connecting portion continuous to one longitudinal end of the first strip-shaped portion and extending radially outward, and a connecting portion. A second strip-shaped portion that is continuous with the radially outer end of the first strip-shaped portion, extends longer than the first strip-shaped portion in a direction opposite to the direction in which the first strip-shaped portion extends, and is wound around the stator.

As a result, the first strip-shaped portion and the second strip-shaped portion are wound around different portions of the stator in the radial direction with the connecting portion in between. Therefore, in the fan-shaped region in the unit angle range from the center of the motor, the circumferential length becomes longer as it goes outward in the radial direction, and the size of the space increases. The second band-shaped portion located on the outer side is formed longer than the first band-shaped portion on the radially inner side, and when formed into a coil, the coil is wound thicker toward the radially outer side. Therefore, the space occupancy of the winding can be increased. Further, since the rectangular copper wire is used as the winding, no space is formed between the windings, and the space occupancy of the winding can be improved. Furthermore, since both free ends of the winding are exposed to the outside, the work of connecting with an external conductor is facilitated. In the invention of claim 2, the action and effect are also realized by winding the first strip-shaped portion and the second strip-shaped portion around the connecting portion in opposite directions to each other around the stator. it can.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 12 show an embodiment of the present invention. 1 is a front view of a motor 1 of this embodiment, FIG. 2 is a vertical cross-sectional view of the motor 1, FIG. 3 is a developed view of a winding 50 used in the motor 1, and FIG. FIG. 5 is a perspective view, FIG. 5 is a cross-sectional view of the stator 12 around which the winding 50 is wound, FIG. 6 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 8 is a cross-sectional view, FIG. 8 is an exploded perspective view of the wiring member, FIG. 9 is a plan view of the wiring member, FIG. 10 is a plan view of the fourth connection plate, and FIG. FIG. 12 is an explanatory diagram of a mounted state, and FIG. 12 is an electric wiring diagram of the motor.

The configuration of the motor 1 will be described below with reference to FIGS. 1 and 2. The motor 1 is a motor mounted on an automobile, and as an example, it is a U-phase, V-phase, or W-phase motor.
It is a 9-pole motor consisting of phases. A stator 12 having a plurality of coils 18 mounted therein and a rotor 4 are arranged in a casing 2 of a motor 1, and a wiring member 20 having a configuration described later is arranged above the stator 12 in FIG. A wiring member 46 having a configuration to be described later is arranged below 12 in FIG. The casing 2 is covered by a cover plate 5, and the wiring member 20 is connected to a lead wire 36 as described later. The stator 12 has a ring portion 14 and nine protrusions 16 protruding inward from the ring portion 14. Protrusion 16
Has a plane T shape. That is, the ring portion 14 and the protruding portion 16 of the stator 12 are formed in the same shape as the stator 71 described with reference to FIG. Hereinafter, FIG. 13 will be referred to when necessary.

The upper end (leader wire of the coil 18) of the coil 18 formed of a tape-shaped winding made of rectangular copper wire wound around each protrusion 16 of the stator 12 is located above the stator 12. The coil 18 is drawn out, and the lower end portion of the coil 18 (drawing line of the coil 18) is drawn out below the stator 12.

The coil 18 will now be described with reference to FIGS.
The winding 50 constituting the above will be described. The winding 50 is formed of a rectangular copper wire, and has a length b that is a first strip-shaped portion in a longitudinal strip shape.
Of the strip-shaped portion 51 and the connecting portion 5 that is continuous with one end of the strip-shaped portion 51 in the longitudinal direction and extends from the one end in the width direction of the strip-shaped portion 51.
2 and a strip-shaped portion 53 that is a second strip-shaped portion having a length a (a> b) and one end of which is continuous with the coupling portion 52 and has a longitudinal strip shape having the same width as the strip-shaped portion 51. The center line 54, which divides the connecting portion 52 into two in the width direction, is the protrusion 16 of the stator 12.
13 is positioned so as to be located in the central portion in the left-right direction.

The strip-like portion 51 of the winding 50 is shown in FIG.
As shown in FIG. 5, the radially inner part of the protrusion 16 is wound in a left-handed manner, for example, and the band-shaped part 53 is wound in a radially outer part of the protrusion 16 in a right-handed manner as an example. Therefore, the end portions of the strip portions 51 and 53 are exposed to the outside of the coil 18 having the structure in which the winding wire 50 is wound as shown in FIG. At this time, the end portion of the strip-shaped portion 51 projects below the coil 18 as an example, and the end portion of the strip-shaped portion 53 forms the coil 1.
It is determined to project above 8.

Further, in the fan-shaped region within the unit angle range from the center of the motor 1, the circumferential length becomes longer as it goes outward in the radial direction, and the size of the space increases, but as shown in FIG. The coil 18 using the winding 50 of this embodiment is
The strip portion 53 is formed longer than the strip portion 51. Therefore, the thickness of the protruding portion 13 of the stator 12 in the radially outer portion 55 is larger than the thickness in the radially inner portion 55. Therefore, the coil 18 is wound thicker toward the outer side in the radial direction, and the space occupancy of the winding 50 can be increased.

Reference numeral 20 indicates a stator 1 as shown in FIG.
2 is a wiring member arranged above. The wiring member 20 is
It has a regular hexagonal ring shape and is formed by stacking a first connecting plate 22 for the U phase, a second connecting plate 24 for the V phase, and a third connecting plate for the W phase.

First, the structure of the first connecting plate 22 will be described.

The first connecting plate 22 is a conductive layer 2 made of a copper plate.
8 and an insulating layer 30 laminated on the conductive layer 28.
In the conductive layer 28, 120 is formed on each side of the regular hexagon.
Projecting pieces U1, U2, U3 from three sides at each position
Is protruding. Each protruding piece is a horizontal piece 3 protruding horizontally.
2 and a rising piece 34 standing upright from the horizontal piece 32. A first external terminal projecting piece 38 for connecting the lead wire 36 from the outside projects from one side of the conductive layer 28. The first external terminal projecting piece 38 is provided with a caulking portion 40 for crimping the lead wire 36 (see FIG. 9).

The second connecting plate 24 has substantially the same structure as the first connecting plate 22, but the projecting pieces V1, V2 and V3 project from three of the nine sides. Projecting pieces V1, V
The projecting positions of 2 and V3 are provided at positions displaced from the first connecting plate 22. Further, the second external terminal projecting piece 42 projects (see FIG. 9).

The third connecting plate 26 also has substantially the same structure as the first connecting plate 22, and the projecting pieces W1, W2 and W3 project from three sides of each of the nine sides. Projecting pieces W1, W
The protruding positions of 2 and W3 are the first connecting plate 22 and the second connecting plate 24.
It is provided at a position deviated from it. Further, the third external terminal projecting piece 44 is shared with the projecting piece W3 (see FIG. 9).

The first connecting plate 22, the second connecting plate 24, and the third connecting plate 26 are laminated to form the wiring member 20.

As shown in FIG. 10, reference numeral 46 is a fourth connecting plate for the neutron point, which is arranged below the stator 12.
The fourth connection plate 46 is in the shape of a regular hexagonal ring, and projecting pieces d1 to d9 project from each side.

The method of assembling the motor 1 will be described in order.

The wiring member 20 is arranged above the stator 12, and the fourth connection plate 46 is arranged below the stator 12.

The upper ends of the tape-shaped coils 18 respectively wound around the protruding portions 16 of the stator 12 are attached to the protruding sides U 1, U 2, U 3, V 1, V 2, V 3 and W of the wiring member 22.
Weld to 1, W2, W3. In this welding method, as shown in FIG. 11, since the coil 18 is exposed to the outside of the coil 18 and has a tape shape as described with reference to FIG. 4, the upper end of the coil 18 is raised. It welds along the piece 34. Thereby, the coil 18 can be easily attached to the wiring member 22.

The lower end of the coil 18 protruding from the lower side of the protruding portion 16 is similar to the upper end of the coil 18 in the coil 1.
Since it is exposed to the outside of 8 and has a tape shape, it can be easily welded to the respective portions of the respective protruding pieces d1 to d9 of the fourth connection plate 46 in the same manner as described above.

The coil 18 of the stator 12 is wired according to the electric circuit shown in FIG.

After assembling as described above, the stator 1
2, the coil 18, the wiring member 20, and the fourth connection plate 46 are integrally molded with a molding resin. As a result, the casing 2 of the motor 1 is completed.

After the casing 2 is completed, as shown in FIG. 2, the rotor 4 is fitted into the hollow portion 3 inside the casing 2 and the rotor 4 is rotatably fixed to the casing 2 by the cover plate 5. To do. In this case, the cover plate 5 is screwed to the casing 2.

As shown in FIG. 9, the lead wire 36 is attached to the first external terminal protruding piece 38 (U4 in the electric circuit of FIG. 12). In this mounting method, the caulking portion 40 provided on the first external terminal projecting piece 38 (U4) is used for mounting. The lead wire 36 is similarly attached to the second external terminal projecting piece 42 (V4). The lead wire 36 is similarly attached to the third external terminal projecting piece 44 (W4).

As described above, in this embodiment, the winding 5
Since a rectangular copper wire is used as 0, no gap is created between the windings 50, and the space occupancy of the windings 50 can be improved.
Further, in the fan-shaped region within the unit angle range from the center of the motor 1, the circumferential length becomes longer toward the outer side in the radial direction, and the size of the space increases, but as shown in FIG. In the coil 18 using the winding 50, the strip-shaped portion 53 is formed longer than the strip-shaped portion 51. For this reason,
The thickness of the protruding portion 13 of the stator 12 in the radially outer portion 55 is larger than the thickness in the radially inner portion 55, and the space occupancy of the winding 50 can be increased.

In the motor 1 of this embodiment, the coil 18
Since the upper end portion and the lower end portion of the winding wire 50 constituting the above are both exposed to the outside of the coil 18, the wiring member 2
Connection work with 0 and 46 becomes easy.

Further, in the motor 1 having the above structure, since the stator 12, the wiring member 20 and the like are integrally molded by the molding resin, even when the motor 1 is mounted on a vehicle and used, vibrations of the vehicle, etc. The wiring does not come off due to, and the vibration resistance and impact resistance are excellent. Further, since the casing 2 of the motor 1 is formed of the mold resin, the heat radiation effect of the motor 1 is promoted.

[0033]

As described above, according to the vehicle motor of the present invention, the winding wound around the stator is a rectangular copper wire, and the winding is wound around the stator radially inward of the stator. First turned
The strip-shaped portion, the connecting portion that is continuous with one longitudinal end of the first strip-shaped portion and extends outward in the radial direction, and the connecting portion that is continuous with the radially outer end of the connecting portion and is opposite to the direction in which the first strip-shaped portion extends. The second strip-shaped portion extends longer than the first strip-shaped portion and is wound around the stator.

Therefore, in the fan-shaped region within a unit angle range from the center of the motor, the circumferential length becomes longer as it goes outward in the radial direction, and the size of the space increases, but according to the winding of the present invention. The second band-shaped portion located radially outward is formed longer than the first band-shaped portion radially inward, and when formed into a coil, the coil is wound thicker toward the radially outer side. Therefore, the space occupancy of the winding can be increased. Further, since the rectangular copper wire is used as the winding, no space is formed between the windings, and the space occupancy of the winding can be improved.

The first strip-shaped portion and the second strip-shaped portion are wound around different portions of the stator in the radial direction with the connecting portion in between. Therefore, all the free ends are exposed to the outside, which facilitates connection work with an external conductor. Further, in the invention of claim 2, the first band-shaped portion and the second band-shaped portion are wound around the connecting portion in the opposite directions with respect to the stator, so that the action and effect are achieved. Can be realized.

[Brief description of drawings]

FIG. 1 is a front view of a motor showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a motor.

FIG. 3 is a development view of a winding wire 50.

FIG. 4 is a perspective view of a coil 18.

FIG. 5 is a cross-sectional view of the stator 12 around which a winding wire 50 is wound.

FIG. 6 is a sectional view taken along line AA in FIG. 2;

FIG. 7 is a sectional view taken along line BB in FIG.

FIG. 8 is an exploded perspective view of a wiring member.

FIG. 9 is a plan view of a wiring member.

FIG. 10 is a plan view of a fourth connection plate.

FIG. 11 is an explanatory diagram showing a state in which the coil is attached to the protruding piece.

FIG. 12 is an electric wiring diagram of the motor.

FIG. 13 is a partial cross-sectional view of a first prior art motor 70.

FIG. 14 is a partial cross-sectional view of a second prior art motor 75.

FIG. 15 is a perspective view of a winding wire 76.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Casing 12 Stator 18 Coil 20 Wiring member 22 First connection plate 24 Second connection plate 26 Third connection plate 32 Horizontal piece 34 Standup piece 36 Lead wire 50 Winding 51, 53 Band 52 Coupling portion 55 Protrusion Radially inward portion of the portion 16 56 Radially outward portion of the protruding portion 16

Claims (2)

[Claims] 1. A flat copper wire is used as a winding wound around the stator, and the winding has a first strip-shaped portion wound around the stator radially inward of the stator and the first strip-shaped portion. A connecting portion that is continuous with one longitudinal end of the strip and extends outward in the radial direction, and a first strip that is continuous with the radially outer end of the connecting portion and is opposite to the extending direction of the first strip. A second belt-shaped portion that extends longer than the portion and is wound around the stator. 2. The on-vehicle motor according to claim 1, wherein the first strip-shaped portion and the second strip-shaped portion are wound around the connecting portion in opposite directions to each other around the stator.