JPH0666258U - Rotating electric machine stator - Google Patents

Abstract

(57) [Summary] [Purpose] The coil end wire 4 of the stator coil is processed by the electric insulator 3 provided on the coil end 2 of the stator coil. [Structure] A coil end 2 of a stator coil wound around a stator core 1 is provided with an electrical insulator 3 having a plurality of barbs 5, and a coil terminal wire is coiled at the barb. To connect. Then, the leg portion provided at one end of the electric insulator is inserted into the slot of the stator core and fixed to the coil end, so that the electric insulator 3 covers the upper surface portion and the inner diameter portion of the coil end 2. [Effect] Since the coil terminal wire can be directly connected to the barbed portion of the electric insulator, color coding for distinguishing the coil terminal wire is not required, and the stator coil can be insulated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stator of a rotating electric machine, and more particularly to the treatment of a coil terminal wire of a stator coil.

[0002]

[Prior art]

 FIG. 6 shows a conventional stator structure of a rotating 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 4 is an end of the coil end. A coil terminal wire that emerges, 8 is a power supply lead wire for connecting to the coil end wire, and 9 is an insulating tube that protects the connection portion of the power supply lead wire to ensure insulation. Is a binding thread that ties this insulating tube to the coil end, and is also used to fix the stator coil at the coil end so that it does not disperse. As described above, the terminal wire of the coil and the lead wire for the power supply are connected by soldering, etc., the insulating tube is passed through the connecting portion to protect the coil, and the coil is wound with the binding thread or binding band 12. I was clinging to the end.

Further, regarding those having a safety protection device 11 such as a temperature fuse and a thermostat for preventing overheating to prevent coil burnout, a binding band 12 or the like is bound to the upper part or the side part of the coil end 2. When fixing with a member and connecting the lead wire 13 for the safety protection device between the coil terminal wire 4 and the lead wire 8 for the power supply, the same treatment as above was required.

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, and the lead wires have variations at their ends.

Further, since there are a plurality of coil terminal wires for connecting the coil terminal wires 4 and other lead wires, each coil terminal wire is colored or distinguished in order to distinguish them. Since it was inserted into a colored tube and color-coded, the processing was troublesome and the man-hours increased. It should be noted that this color-coding process was 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 lapped on the circumference of the coil end so that the stator coil does not vary. It was necessary to mechanically bind and fix the thread.

[0007]

[Problems to be solved by the device]

 As described above, the conventional one requires complicated manual work such as the work of connecting the coil terminal wire and the power supply lead wire, the work of passing the insulating tube through this, the thread tie work, and the coil terminal wire. When fixing the wire to the coil end with a thread or the like, the coil end wire was extremely thin and could be damaged. Recently, a rotating electric machine equipped with a safety protection device such as a temperature fuse is often used to ensure safety, and like the above connection of the coil terminal wire and the power supply lead wire, Requires manual work. Secure a safety protection device such as a temperature fuse to the coil end with a binding band, etc., connect the lead wire for the safety protection device and the coil terminal wire, and connect the lead wire for the other safety protection device. -Connect the lead wire and the lead wire for the 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. It is necessary to install the safety protection device, which is troublesome and time-consuming, and there is a lot of manual work, so the operator's intuition is often used, and the connection position of the safety protection device becomes unstable. Included. 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. The objective is to obtain a stator for a rotating electric machine that can achieve both improved reliability and reduced man-hours.

[0008]

[Means for Solving the Problems]

 In order to solve this problem, the coil terminal wire of the stator of the rotating electric machine according to the present invention can be held by being twisted by a twisting portion provided in a part of the electrical insulator attached to the coil end. When connecting the lead wire for the power supply or the lead wire for the safety protection device, attach another component such as a print board (not shown) on the electrical insulator, and then attach this printed board. It can be connected by soldering or the like in the same manner as the coil terminal wire with the interposition of the like.

[0009]

【work】

 In this invention, an annular electrical insulator with a barb is attached to the coil end, which is formed by inserting the stator coil into the stator core in advance, and the predetermined coil end wire is cabled to the predetermined barb. The wires are connected and the coil ends together with the electrical insulator are mechanically bound together by thread by lacing. Further, the legs provided on the electric insulator are inserted into the slots of the stator core to be held and fixed.

[0010]

【Example】

 The configuration of the present invention will be described in detail with reference to the embodiments shown in the drawings and shown in FIGS. FIG. 1 shows a stator structure of a rotating electric machine. 1 is a stator core, 2 is a coil end of a stator coil wound around the stator core, and 3 is a coil end wire 4 of a coil end. It is an electrical insulator made of an insulating resin molded product provided with the barbed portion 5. This electrical insulator is formed in a ring shape so as to face the coil end of the stator coil, and the electrical insulator 3 is provided with a plurality of barbed portions 5 at positions where the coil terminal wires 4 are easily connected. Twist and connect the coil end wire to the tangle. In addition, a leg portion is provided at one end of the electric insulator so that the electric insulator can be inserted into a slot (not shown) of the stator core and held and fixed.

FIG. 2 is a plan view of the electrical insulator provided with the barbed portions 5, and a plurality of the barbed portions 5 are provided on the inner peripheral portion of the electrical insulator so that the coil terminal wires can be easily connected. A concave portion 6 is provided on the inner peripheral portion of the electrical insulator provided with the twisted portion so that the coil terminal wire can be easily twisted. Further, the leg portion 7 is provided on the inner peripheral portion of the electric insulator.

FIG. 3 is a sectional view taken along line AA in FIG. As shown in the figure, the shapes of the barbed portion 5 and the leg portion 7, 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 the coil wound around the stator core as described in the conventional example can be secured. It was necessary to mechanically bind and fix the coil end circumference with threads so that the coils would not disperse after being subjected to processing such as molding, but by using this electrical insulator It can be simplified. The tips of the legs are shaped so that they can be easily inserted into the slots of the stator core.

FIG. 4 is a bottom view of the electrical insulator provided with the barbed portion 5 and shows a state in which FIG. 2 is turned upside down.

FIG. 5 is a front view of the electrical insulator viewed from the leg side. As shown in the figure, by bifurcating the tips of the legs 7, the legs 7 can be inserted across two adjacent slots, so that they can be more firmly held and fixed, and because the electrical insulator is a ring-shaped coil end. It will come into contact with the entire surface and will be mechanically stable.

As described above, the coil terminal wire of the stator coil can be connected by being twisted to the twisted portion arranged on the electrical insulator. If the power supply lead wire and the safety protection lead wire are also connected by interposing another component such as a printed circuit board, the connection with the stator coil can be performed easily and securely, which is a manual operation. Can be reduced and automation and systematization in each process are possible. The electrical insulator of the present invention is an annular body, and the tips of the legs are bifurcated, but the invention is not limited to this, and it is needless to say that the scope can be changed without changing the gist.

[0016]

[Effect of device]

 As is apparent from the description of the embodiment, the rotating electric machine of the present invention has the following effects. (1) The coil terminal wire of the stator coil can be connected at the barbed portion arranged on the electrical insulator, and the power supply lead wire and the safety protector lead wire can also be connected to the printed circuit board, etc., if necessary. Insulation tube and binding thread for the insulation tube are not required, and the number of steps can be reduced. (2) Since the twisted part is provided at a predetermined position of the electrical insulator, coloring is not necessary to distinguish the coil terminal wires, and standardized production is possible regardless of the multi-speed rotary electric machine. Becomes (3) Since the upper surface and inner diameter on the circumference of the coil end are covered with an annular electrical insulator, it is possible to prevent the stator coil from protruding and drip lines, and to secure an insulation distance. The thread tie 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 and held and fixed in the slot of the stator core, the position of the barbed portion is determined, so that the lead wire can be positioned when connected. As described above, since the conventional manual work is not necessary, the quality is stable, and the rotating electric machine can be mechanically assembled. Therefore, the effect is far superior to the conventional case.

[Brief description of drawings]

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

FIG. 2 is a plan view of the electrical insulator of the present invention.

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

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

FIG. 5 is a front view of the electrical insulator of the present invention.

FIG. 6 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 Coil Terminal Wire 5 Barb 6 Recess 7 Leg 8 Power Lead Wire 9 Insulation Tube 10 Bundling Thread 11 Safety Protective Device 12 Binding Band 13 Safety Protective Device Lead wire

Claims (3)

[Scope of utility model registration request] 1. An electric insulator is attached to a coil end of a stator coil, and a plurality of barbs are provided on a part of the electric insulator. A stator for a rotating electric machine, characterized in that it connects coil terminal wires. 2. The stator of a rotary electric machine according to claim 1, wherein a leg portion to be inserted into a slot of the stator core is provided and held and fixed. 3. A stator for a rotating electric machine, wherein the electrical insulator according to claim 1 or 2 is formed into an annular shape.