JPH0638429A - Winding stator for motor - Google Patents

Abstract

PURPOSE:To make the automatization of securing the end of a wire on a wire securing part possible by outwardly projecting, from the end of an insulator, the wire securing part for receiving the end of a magnet wire. CONSTITUTION:A terminal assembly (CA) 22 can be fitted into a ring insulator (LI) 18 of a slot insulator (SI) 16 secured on the upper end side of an inside core 10, and is secured through a hook 20 formed on LI 18. CA 22 consists of a synthetic resin ring assembly (LA) 24 which has been formed into ring shape in a way that it can be fitted into LI 18; and a plurality of wire securing parts (WS) 26 formed on LA 24 in an integral manner. WSs 26 are upwardly projected from the upper end of LA 24. WSs 26 are composed of conductive material; an anchoring part 28 which receives the end of a magnet wire is formed on the upper end of each WS, and the other end is formed into a terminal 30 which outwardly projects from the circumferential surface of LA 24 and is electrically connected with a printed circuit board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding stator of an electric motor, and more particularly, to a core which is made of a magnetic material and around which a magnet wire is wound, and which can be fitted to the end surface of the core. The present invention relates to a winding stator of an electric motor, the winding stator being provided between a core and a magnet wire and having an insulator electrically insulating the core and the magnet wire.

[0002]

2. Description of the Related Art A conventional winding stator of a motor is shown in FIG.
0 and FIG. 21 will be described together. First, the conventional example shown in FIG. 20 will be described. Each coil 100 is formed by winding a magnet wire around each tooth 104 of a core 102 made of a magnetic material. The tooth portions 104 of the core 102 are provided to radially project inward of the ring-shaped core 102. In order to electrically insulate the magnet wire forming the coil 100 from the core 102,
An insulator 106 (only one of which is shown) formed of a synthetic resin is fitted on both upper and lower end surfaces of the magnet, and the magnet wire is wound around the outer peripheral surface of the insulator 106. The end 1 of the magnet wire pulled out from the coil 100
08 is soldered to the lead wire 110, and the soldered portion is covered with a protective tube 112. Protective tube 1
12 and the lead wire 110 are fixed to the core 102 with a binding thread 114. Next, the conventional example shown in FIG. 21 will be described. Each coil 200 includes a core 20 formed of a magnetic material.
A magnet wire is wound around each tooth portion 204 of No. 2. The tooth portions 204 of the core 202 are provided so as to radially project outwardly of the ring-shaped core 202. Figure 21
In the example, since the tooth portions 204 are provided so as to project radially outward of the core 202, there is an advantage that the step of winding the magnet wire can be automated. Coil 200
Insulators 206 (only one is shown) formed of synthetic resin on the upper and lower end surfaces of the core 202 in order to electrically insulate the magnet wire forming the core from the core 202.
The magnet wire is attached to the insulator 206.
Is wound around the outer peripheral surface of. The end portion 208 of the magnet wire pulled out from the coil 200 is soldered to the lead wire 210, and the soldered portion is the protection tube 212.
Is covered with. Protective tube 212 and lead wire 210
Is fixed to the core 202 with a binding thread 214.

[0003]

However, the conventional winding stator of the above-mentioned electric motor has the following problems.
In the case of the winding stator of the electric motor shown in FIG. 20, since the tooth portions 104 of the core 102 are radially projected toward the inner side of the ring-shaped core 102, the winding of the magnet wire is automated. Is difficult. Further, a step of soldering the end portion 108 of the magnet wire and the lead wire 110, covering the soldered portion with a protective tube 112, and further fixing the protective tube 112 and the lead wire 110 to the core 102 with a binding thread 114. However, there is a problem that it is difficult to automate and it is an obstacle to improving productivity. In the case of the winding stator of the electric motor shown in FIG. 21, the tooth portion 20 of the core 202 is
Since 4 is radially protruded from the outer side of the ring-shaped core 202, the winding of the magnet wire can be automated, but the end portion 208 of the magnet wire and the lead wire are also possible. 210 is soldered, the soldered portion is covered with a protective tube 212, and the protective tube 212 and the lead wire 210 are covered with a binding thread 214 to form the core 2
There is a problem that the process of fixing to No. 02 is difficult to automate and productivity cannot be improved. Therefore, it is an object of the present invention to provide a winding stator of an electric motor, which enables automation of processing of an end portion of a magnet wire.

[0004]

In order to solve the above problems, the present invention has the following constitution. That is, a core formed of a magnetic material, around which a magnet wire is wound, can be fitted to an end surface of the core, is disposed between the core and the magnet wire, and electrically connects between the core and the magnet wire. In a winding stator of an electric motor including an insulator that electrically insulates, a wire attachment portion that is protruded outward from an end surface of the insulator and that can attach an end portion of the magnet wire to a tip end is provided. Characterize. In particular, the wire attachment portion may be formed of a conductive material and attached to the insulator, and the wire attachment portion may be provided with a terminal portion for electrically connecting to a printed circuit board. Good.

[0005]

[Operation] The operation will be described. Since the wire attachment portion to which the end portion of the magnet wire is attached is projected outward from the end surface of the insulator, the attachment of the wire end portion to the wire attachment portion can be automated. In particular, when the wire attachment portion is formed of a conductive material and attached to the insulator, the wire attachment portion can be connected to another electric circuit, and the connection can be automated. Further, when the wire attachment portion is provided with a terminal portion for electrically connecting to the printed circuit board, it becomes possible to automate the connection between the end portion of the magnet wire and the printed circuit board.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, FIG. 1 (plan view) and FIG.
The inner core 10 will be described together with (front view). The inner core 10 is formed by laminating magnetic materials (for example, steel plates). The inner core 10 includes a ring portion 12 formed in a ring shape, and a plurality of tooth portions 14 radially protruding outward from the outer periphery of the ring portion 12 at equal intervals.

Next, the slot insulator 16 will be described with reference to FIG. 3 (plan view) and FIG. 4 (front view). The slot insulator 16 is made of a non-conductor (for example, synthetic resin). Slot insulator 16
Since a pair is provided because they are fitted to the upper end surface and the lower end surface of the inner core 10, only the slot insulator 16 fitted to the upper end surface side of the inner core 10 will be described with reference to FIGS. 3 and 4. This is because it has the same structure as the slot insulator fitted on the lower end surface side of the inner core 10. Like the inner core 10, the slot insulator 16 is also provided with a ring insulator portion 18 and a tooth insulator portion 18. Ring insulator part 18
Can be fitted onto the ring portion 12 of the inner core 10. A hook portion 20 is formed on the inner wall surface of the ring insulator portion 18. Tooth insulator part 18
Can be crowned so as to cover the respective tooth portions 14 of the inner core 10. Each tooth portion 14 is a tooth insulator portion 18
The slot 22 can be fitted.

Next, the terminal assembly 22 will be described with reference to FIG. 5 (plan view) and FIG. 6 (cross sectional view taken along the line AA in FIG. 5). The terminal assembly 22 can be fitted into the ring insulator portion 18 of the slot insulator 16 fitted to the upper end surface side of the inner core 10, and is fixed via the hook portion 20 formed in the ring insulator portion 18. The terminal assembly 22 is formed in a ring shape,
The slot insulator 16 includes a ring assembly portion 24 formed of a synthetic resin so that it can be fitted into the ring insulator portion 18, and a plurality of wire attachment portions 26 integrally formed with the ring assembly portion 24. Wire mounting part 2
6 is provided so as to project upward from the upper end surface of the ring assembly portion 24. The wire attaching portion 26 is formed of a conductive material (for example, iron), has an engaging portion 28 that can engage the end portion of the magnet wire at the upper end, and has the other end outside the outer peripheral surface of the ring assembly portion 24. It is formed on the terminal portion 30 that projects toward the side and is electrically connected to a printed circuit board (described later).

The slot insulators 16 and 18 are fitted to the upper and lower end surfaces of the inner core 10, and the terminal assembly 22 is fitted to the slot insulator 16 on the upper end surface side thereof, as shown in FIGS. 7 (plan view) and 8 (front view). Figure). The wire attachment portion 26 projects upward from the upper end surface of the slot insulator 16. Although the slot insulator 16 and the terminal assembly 22 are separately formed and assembled in this embodiment, they may be integrally formed. Figure 7
In the state shown in FIG. 8 and FIG. 8, since the tooth portion 14 and the like are projected outward, the magnet wire is wound around the tooth portion 14 and the like by the automatic winding machine (not shown). A state in which the magnet wire is wound is shown in FIG. 9 (plan view) and FIG. 10 (front view). The coil 32 is formed by the wound magnet wire, and the tooth insulator portion 18 electrically insulates between the tooth portion 14 and the magnet wire. Each end 34 of the magnet wire is automatically temporarily hooked and cut by the hooking portion 28 of the wire attaching portion 26 by an automatic winding machine. After that, the hook portion 28 and the end portion 34 of the magnet wire are welded and conducted by an automatic welding machine (not shown).

Next, the outer core 36 will be described with reference to FIGS. 11 (plan view) and 12 (front view). The outer core 36 is formed by laminating magnetic materials (for example, steel plates). The outer core 36 has a ring portion 38 formed in a ring shape.
And a plurality of inner tooth portions 40 radially protruding inward from the inner circumference of the ring portion 38 at equal intervals. The outer core 36 can be press-fitted into and fitted to the inner core 10, and the inner end surface of the inner tooth portion 40 can be brought into close contact with the outer end surface of the tooth portion 14 of the inner core 10. A state where the outer core 36 is press-fitted into the inner core 10 of FIGS. 9 and 10 is shown in FIG. 13 (plan view) and FIG. 14 (front view).

Next, the printed circuit board 42 will be described with reference to FIGS. 15 (plan view) and 16 (front view). The printed board 42 is provided with a sensor 44 for detecting the number of rotations of a rotor (described later), and a connection terminal portion 46 connected to the terminal portion 30 of the wire attachment portion 26 is formed. A printed circuit is connected to each connection terminal portion 46. The printed board 42 is provided with four through holes 48, and a projecting hole portion 50 is formed at the outer edge of the through hole 48 so as to extend outward. Printed circuit board 4
2 can be fixed to the upper end surface side of the slot insulator 16 (more precisely, the terminal assembly 22). When the printed circuit board 42 is fixed, the wire attachment portion 26 is inserted into the through hole 4
8 and the printed circuit board 42 is rotated, the terminal part 30 of the wire attachment part 26 and the connection terminal part 4 are rotated.
6 come into contact with each other to establish electrical conduction between them, and the printed circuit board 42 is clamped and fixed. In the subsequent process, the terminal portion 30 and the connection terminal portion 46 are soldered and fixed by an automated device (not shown). Further, the convex portion 54 formed on the terminal assembly 22 can be fitted into the concave portion 52 formed on the inner wall of the through hole 48, thereby preventing the printed board 42 from being pulled out.

A state in which the printed circuit board 42 is fixed to the terminal assembly 22 is shown in FIG. 17 (plan view) and FIG. 18 (front view). As a result, the winding stator 56 of the electric motor of this embodiment is formed. FIG. 19 shows a cross-sectional view of an electric motor 62 in which a rotor 58 and the like are attached to the winding stator 56 and molded with synthetic resin 60. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .

[0013]

When the winding stator of the electric motor according to the present invention is used, the wire attachment portion for attaching the end portion of the magnet wire is provided so as to project outward from the end surface of the insulator. Since the attachment to the wire attachment portion can be automated, the productivity of the electric motor can be significantly improved. . In particular, if the wire attachment portion is formed of a conductive material and is attached to the insulator, the wire attachment portion can be connected to another electric circuit, and the connection can be automated. If the wire attachment portion is provided with a terminal portion for electrically connecting to the printed circuit board, it is possible to automate the connection between the magnet wire end portion and the printed circuit board, which can further contribute to the improvement of productivity. Exerts a remarkable effect.

[Brief description of drawings]

FIG. 1 is a plan view of an inner core in an embodiment of a winding stator of an electric motor according to the present invention.

FIG. 2 is a front view of an inner core.

FIG. 3 is a plan view of the slot insulator.

FIG. 4 is a front view of the slot insulator.

FIG. 5 is a plan view of the terminal assembly.

6 is a sectional view taken along the line AA of FIG.

FIG. 7: Fit the slot insulator to the inner core,
The top view which showed the state which fitted the terminal assembly to the slot insulator.

FIG. 8 is a front view of the state of FIG.

FIG. 9 is a plan view showing a state in which a coil is formed by winding a magnet wire.

FIG. 10 is a front view of the state of FIG.

FIG. 11 is a plan view of the outer core.

FIG. 12 is a front view of an outer core.

FIG. 13 is a plan view showing a state where the outer core is press-fitted into the inner core having the coil formed therein.

FIG. 14 is a front view showing a state in which an outer core is press-fitted into an inner core having a coil formed therein.

FIG. 15 is a plan view of a printed circuit board.

FIG. 16 is a front view of a printed circuit board.

FIG. 17 is a plan view showing a state where the printed circuit board is fixed to the terminal assembly.

FIG. 18 is a front view showing a state in which the printed circuit board is fixed to the terminal assembly.

FIG. 19 is a sectional view of an electric motor formed by resin-molding the winding stator of this embodiment.

FIG. 20 is a plan view showing a conventional winding stator.

FIG. 21 is a plan view showing a conventional winding stator.

[Explanation of symbols]

 10 Inner Core 16, 18 Slot Insulator 22 Terminal Assembly 26 Wire Attachment Part 30 Terminal Part 32 Coil 34 End of Magnet Wire 36 Outer Core 42 Printed Circuit Board 56 Winding Stator 62 Electric Motor

Claims (3)

[Claims] 1. A core made of a magnetic material, on which a magnet wire is wound, and a core which can be fitted to an end surface of the core and which is disposed between the core and the magnet wire. In a winding stator of an electric motor, which comprises an insulator electrically insulating between the wire, a wire attachment portion protruding outward from an end surface of the insulator and capable of attaching an end portion of the magnet wire to a tip end thereof. A winding winding stator of an electric motor having. 2. The winding stator for an electric motor according to claim 1, wherein the wire attachment portion is made of a conductive material and is attached to the insulator. 3. The winding stator for an electric motor according to claim 2, wherein the wire mounting portion is provided with a terminal portion for electrically connecting to the printed circuit board.