JPH06253484A - Stator for rotary electric machine - Google Patents

Abstract

PURPOSE:To process an end of a stator coil and outer leads at a printed board provided at the end of the coil. CONSTITUTION:Elctric insulators 3 arranged with a plurality of entangling parts 4 are provided at an end 2 of a stator coil wound on a stator core 1, and the end is entangled with the entangling part to be connected. The end of the coil is soldered fixedly to a printed board 5. On the other hand, leads 8 for a power source of external leads and a safety protector 10 are connected to the board 5, and connected to ends 7 of the coil through a conductive layer 6. Accordingly, since the ends 7 of the coil can be directly connected to the entangling part of the insulator, the ends of the coil is not necessarily color identified, and can be connected to the leads 8 and the protector 10 via the board 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of a rotary electric machine equipped with a printed circuit board which can easily connect a stator coil, a power supply lead wire and a safety protection device.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional stator structure of a rotary electric machine. In the figure, 1 is a stator core, 2 is a coil end of a stator coil inserted in the stator core, and 7 is a coil end. Of the coil end wire, 8 is a power supply lead wire for connecting to the coil end wire, and 16 is an insulating tube for protecting the connection portion of the power supply lead wire to ensure insulation. Reference numerals 9 and 9 are binding yarns that tie the insulating tube to the coil end, and are also used to fix the stator coil of the coil end so as not to disperse. As described above, the connection between the coil terminal wire and the power supply lead wire is made by soldering or the like, an insulating tube is passed through the connection portion to protect it, and the coil end is tied to the coil end with a binding thread or binding band 17. I was wearing it.

Further, a safety protection device 10 such as a temperature fuse and a thermostat for preventing overheating to prevent coil burnout.
In the case of the one provided with, the coil end 2 is fixed to the upper portion or the side portion with a binding member such as a binding band 17, and the lead wire 18 for the safety protection device is provided between the coil terminal wire 7 and the power lead wire 8. The same process as above was required when connecting the.

Further, with such a connecting method, the coil terminal wire can be cut off, the lead wire can be connected to the lead wire, and the like, so that the ends of the lead wire are varied.

Further, since there are a plurality of coil terminal wires for connecting the coil terminal wires 7 and other lead wires, each coil terminal wire is colored or colored to distinguish them. -Because it was inserted into the box and colored, the process was troublesome and the man-hours increased. Note that this color-coding processing is not suitable for a rotating electric machine having many lead wires with speed-regulating taps.

Moreover, after the stator coil wound around the stator core 1 of the rotating electric machine is subjected to a predetermined forming process, the stator coil is laid on the coil end circumference so that the stator coil does not vary.
It was necessary to mechanically bind and fix the yarn by singing.

[0007]

As described above, the conventional ones perform complicated manual work such as connecting the coil terminal wire and the power supply lead wire, inserting the insulating tube through the connecting wire, and tightening the thread. When the coil end wire is required and is fixed to the coil end with a thread or the like, the coil end wire is extremely thin and may be damaged. Recently, a rotating electric machine equipped with a safety protection device such as a temperature fuse is often used for ensuring safety, and like the above-mentioned connection between the coil terminal wire and the power supply lead wire, Requires manual work. Attach a safety protection device such as a temperature fuse to the coil end with a binding band, etc., and then connect the lead wire for the safety protection device and the coil terminal wire. -Connect the lead wire and the lead wire for power supply, connect the connection part to each of them by soldering, etc., fix the connection part to the coil end with the binding thread through the insulating tube. Since the installation of the safety protection device is troublesome and time-consuming, and there is a lot of manual work, there is a lot of reliance on the operator's intuition, and the connection position of the safety protection device becomes unstable, which causes problems in quality. I was out. The present invention has been made to solve the above-mentioned conventional problems, and can easily connect the coil terminal wire, the power supply lead wire, and the safety protection device, and also has the insulation of the coil end, It is an object of the present invention to obtain a stator for a rotating electric machine that can achieve both improved reliability and reduced man-hours.

[0008]

In order to solve this problem, the coil terminal wire of the stator of the rotating electric machine according to the present invention is wound around the barbed portion provided in a part of the electrical insulator mounted on the coil end. The end portion is connected to the lead wire for the power supply or the lead wire for the safety protection device on the printed circuit board by soldering or the like.

[0009]

[Work] In this invention, an annular electrical insulator with a barb is attached to a coil end, which is formed by inserting a stator coil into a stator core in advance, and a predetermined coil terminal wire is attached to the barb. The wires are twisted and the coil ends together with the electrical insulator are mechanically bound together by a thread by lacing. In addition, the lead wire for power supply and the lead wire for safety protection device
When connecting the lead wire, the coil terminal wire connected to the barb provided on the electric insulator can be connected to the printed board. Further, the leg portion provided on the electric insulator is inserted into the slot of the stator core to be held and fixed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a stator structure of a rotary electric machine, and FIG. 2 is a front view including a partial cross section of the stator of the rotary electric machine. Reference numeral 1 is a stator core, 2 is a coil end of a stator coil wound around the stator core, 3 is an electric insulation made of an insulating resin molded product provided with a barb 4 around which a coil end wire of the coil end is wound. A body 5 is a printed circuit board made of an arc-shaped insulator that is supported so as to cover a part of the end surface of the electrical insulator, and a stator coil is provided via a conductive conductive layer 6 provided on the printed circuit board. The coil terminal wire 7 and the power supply lead wire 8 are connected by soldering. Reference numeral 9 is a binding thread that binds the electric insulator 3 to the coil end. 10 is a safety protection device such as a temperature fuse,
The printed circuit board 5 is fitted and fixed to a support 11 having a function of supporting for fixing the printed circuit board 5 and a function of inserting and holding a lead wire for a power source, and is connected to the printed circuit board by soldering.

As a processing procedure, a stator coil is wound around a stator core 1 and the coil end 2 is fitted with the above-mentioned electrical insulator 3 having a barbed portion. Furthermore, the safety protection device 10
A plurality of guide grooves 12 are provided on the circumference of the printed circuit board 5 to which the power supply lead wire 8 and the support 11 are attached, and a plurality of barbed portions arranged on the electric insulator 3 are provided. A predetermined coil terminal wire 7 is wound around the wire 4, and the coil terminal wire is fitted into the guide groove 12 of the printed circuit board and connected to each other by soldering. The support 11 is provided with a support leg portion 13 and is inserted into a slot (not shown) of the stator core 1.

FIG. 3 is a plan view in which an electric insulator is attached to a stator of a rotating electric machine, 1 is a stator core, 2 is a coil end, 3 is an electric insulator, and 4 is provided integrally with the electric insulator. The twisted portion, 7 is a coil end wire from the coil end and is wound around the twisted portion 4. The electric insulator 3 is formed in a ring shape so as to face the coil end of the stator coil,
This electric insulator is provided with a plurality of barbed portions 4 at positions where the coil terminal wires 7 are easily connected, and the coil terminal wires 7 are connected to the barbed portions by being barred.

FIG. 4 is a plan view of the electrical insulator provided with the barbed portions 4, in which a plurality of the barbed portions 4 are provided on the end face of the inner peripheral portion of the electrical insulator at a position where the coil terminal wire is easily connected. Cage,
A concave portion 14 is provided on the end surface of the inner peripheral portion of the electric insulator provided with the twisted portion so that the coil terminal wire can be easily twisted. Further, the leg portion 15 for electric insulator is provided on the inner peripheral portion of the electric insulator.

FIG. 5 is a sectional view taken along line AA in FIG. As shown in the figure, the shapes of the barbed portion 4 and the electrical insulator leg portion 15, which are the main parts of the electrical insulator, are shown. This electrical insulator can secure the insulation of the stator coil, which is the charging part, by mounting it on the upper surface and the inner peripheral part of the coil end, and as described in the conventional example, the coil wound around the stator core can be used. It was necessary to mechanically fix the coil end circumference by lacing with a binding thread so that the coil would not disperse after being subjected to processing such as molding, but using this electrical insulator simplifies Can be converted. Further, an electric insulator leg portion 15 is provided at one end of the electric insulator so as to be inserted into a slot (not shown) of the stator core and held and fixed. The tips of the legs for electrical insulators are shaped so that they can be easily inserted into the slots of the stator core.

FIG. 6 is a plan view in which the power supply lead wire 8, the safety protection device 10 and the support 11 are connected to the printed circuit board 5. On this printed circuit board, a conductive groove is provided in the guide groove 12 and around the guide groove so that the end of the coil terminal wire can be easily guided in the vicinity of the barbed portion arranged on the electrical insulator around which the coil terminal wire is wound. A layer 6 is provided to connect and fix the ends of the coil end wires. Further, the support body 11 is integrated with the printed circuit board 5, and similarly to the electric insulator, a support body leg portion (not shown) is provided and held and fixed to the stator core.

As described above, the coil terminal wire of the stator coil can be wound around the barbed portion arranged on the electrical insulator and soldered or the like on the printed circuit board for connection. And
If the power supply lead wire for the external lead wire and the safety protection device are connected via the conductive layer of the printed circuit board, the connection with the stator coil can be done easily and securely, which makes manual work easier. It can be reduced and automation and systematization in each process are possible. The electric insulator is not limited to the annular body, and it goes without saying that the electric insulator can be changed without changing the gist.

[0017]

As is apparent from the description of the embodiments, the rotary electric machine of the present invention has the following effects. (1) Since the coil end wire of the stator coil is connected by the barbed portion arranged on the electric insulator, the lead wire for power supply and the safety protection device can be connected together by the printed circuit board,
An insulating tube and a binding thread for the insulating tube are not required, and the number of steps can be reduced. (2) Since the twisted portion is provided at a predetermined position of the electric insulator, coloring or the like for distinguishing the coil terminal wire is not required, and standardized production is possible regardless of the multi-speed rotary electric machine. Becomes (3) Since the annular upper surface of the coil end covers the upper surface and the inner diameter of the coil end, it is possible to prevent the stator coil from protruding and drip lines, and to secure the insulation distance. Thread binding on the circumference of the coil end can be simplified. (4) Since the leg portion is provided at one end of the electric insulator and can be inserted, held and fixed in the slot of the stator core, the position of the barbed portion is determined, so an external lead wire such as a power lead wire is connected. Positioning can be done when doing. As described above, since the conventional manual work is not required, the quality is stable, and the rotary electric machine can be mechanically assembled. Therefore, there is a further excellent effect as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a plan view of a stator of a rotating electric machine according to the present invention.

FIG. 2 is a front view of the stator of the rotating electric machine according to the present invention.

FIG. 3 is a plan view of a stator of a rotary electric machine according to an embodiment of the present invention.

FIG. 4 is a plan view of the electrical insulator of the present invention.

5 is a cross-sectional view taken along the line AA in FIG.

FIG. 6 is a plan view of a printed circuit board according to an embodiment of the present invention.

FIG. 7 is a plan view of a stator of a conventional rotating electric machine.

[Explanation of symbols]

 1 Stator Iron Core 2 Coil End 3 Electrical Insulator 4 Barbed Section 5 Printed Circuit Board 6 Conductive Layer 7 Coil Terminal Wire 8 Power Lead Wire 9 Bundling Thread 10 Safety Protective Device 11 Support 12 Guide Groove 13 Support Leg Part 14 Recessed part 15 Leg part for electrical insulator 16 Insulation tube 17 Binding band 18 Lead wire for safety protection device

Claims (1)

[Claims] 1. An electric insulator is attached to a coil end of a stator coil, and a plurality of barbs are provided on the electric insulator, and the coil terminal wires of the stator coil are connected by the barbs. At the same time, the coil terminal wire is connected to a printed circuit board arranged on the electrical insulator, and an external lead wire is also connected to the printed circuit board, the stator of a rotating electric machine.