JPH0984288A - Insulating paper at joint of lead wire of motor and insulating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an insulating paper and an insulating method for insulating the joint of the lead wire of a motor and a lead wire with good insulation performance. SOLUTION: A joint insulating paper is provided, at one end part thereof, with a counterbore part 5 being buried in the coil end of the stator of a motor when it is fixed thereto. Sections 1, 2, 3 for containing the joints of the lead wire of the motor and the lead wire at a plurality of points are arranged laterally in a row at the outer circumferential part of the insulating paper facing the counterbore part 5 while being insulated from each other by a partially applied ultrasonic welding part 4 such that the sections are not buried in the coil end of the stator of the motor but exposed to the surface thereof thus forming an insulating paper for insulating the joint of the lead wire of the motor and the lead wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting portion insulating paper for insulating a connecting portion between a lead wire and a lead wire of an electric motor and an insulating treatment method.

[0002]

2. Description of the Related Art Conventionally, an insulating paper for connecting a lead wire and a lead wire of an integral type electric motor is shown in FIG. 3 as a top view and a front view, respectively. In FIG. 3, reference numerals 1, 2 and 3 denote housings for connecting a lead wire and a lead wire of a motor coil formed on an insulating paper, which are formed by an ultrasonic welding portion 4 partially applied to the insulating paper. ing.

In the conventional connecting portion insulating paper of the lead wire lead wire of the integral type electric motor, the connecting portion accommodating portions 1, 2, 3 provided in the connecting portion insulating paper are made of insulating paper as shown in the figure. Since it is diagonally arranged from the upper part to the lower part, the insulating paper is embedded in the coil end with the connecting part of the lead wire lead wire of the electric motor inserted in the connecting part storage part, and then the coil end is laced to If protrusions such as solder, welding, and caulking terminals are generated at the connection part when pressure shaping is performed, the protrusions pierce the connection part insulating paper due to pressure stress when the coil is pressed, and insulation failure such as a rare short circuit occurs. There was a risk of causing.

[0004]

DISCLOSURE OF THE INVENTION According to the present invention, the insulating paper is embedded in the coil end in a state where the connecting portion of the lead wire of the electric motor is inserted in the connecting portion accommodating portion, and then racing is performed to press the coil end. It is an object of the present invention to provide an insulating paper and an insulating treatment method at a connecting portion of a lead wire and a lead wire of an electric motor that does not cause insulation failure such as a rare short circuit even when shaped.

[0005]

The invention according to claim 1 of the present application provides a connecting portion insulating paper for insulating a connecting portion between a lead wire and a lead wire of an electric motor, wherein one end portion of the connecting portion insulating paper is
When mounted on an electric motor stator, a pedestal portion embedded in a coil end of the electric motor stator and an outer peripheral end portion of the insulating paper facing the pedestal portion are insulated from each other, and the electric motor stator It is achieved by arranging and forming a plurality of locations for connecting the lead wire of the electric motor and the connecting portion of the lead wire in a horizontal row so as not to be embedded in the coil end and to be exposed on the coil end surface. .

The invention according to claim 2 of this application is a method for insulating a lead wire and a lead wire connecting portion of a single-phase motor, wherein the lead wire connecting portion of the electric motor according to claim 1 is connected to an insulating paper connecting portion. After inserting the connecting portion where the lead wire of the electric motor and the lead wire are electrically connected by soldering, welding, or caulking into the storage portion, the pedestal portion of the insulating paper is inserted,
It is achieved by inserting between the main coil and the auxiliary coil and fixing the coil end surface.

The invention according to claim 3 of this application is a method for insulating a lead wire and a lead wire connection portion of a three-phase electric motor, wherein the lead wire connection portion of the electric motor according to claim 1 is an insulating paper connection portion. After inserting the connecting portion where the lead wire of the electric motor and the lead wire are electrically connected by soldering, welding, or caulking into the storage portion, the pedestal portion of the insulating paper is inserted,
It is achieved by inserting the coil between the outer coil and the middle coil or between the middle coil and the inner coil and fixing the coil end surface.

[0008]

1 shows a top view, a front view and a side view of a connecting portion insulating paper for insulating a connecting portion between a lead wire and a lead wire of an electric motor according to the present invention. In FIG. 1, 1,
Reference numerals 2 and 3 denote storage portions for connecting a lead wire and a lead wire of a coil of an electric motor formed on insulating paper, 4 denotes an ultrasonic welding portion partially applied to the insulating paper, and 5 denotes a pedestal portion.

The connecting portion insulating paper for insulating the connecting portion between the lead wire and the lead wire of the electric motor of the present invention is formed as follows. At one end of the connecting portion insulating paper, a pedestal portion 5 is provided which is embedded in the coil end of the electric motor stator when the connecting portion insulating paper is attached to the electric motor stator. Further, the outer peripheral edge of the insulating paper facing the pedestal portion 5 is insulated from each other by an ultrasonic welding portion 4 partially applied to the insulating paper by ultrasonic welding, and is fixed to the motor stator. When attaching the connecting portion insulating paper, the connecting portion housings 1 and 2 for connecting the lead wire and the lead wire of the electric motor at a plurality of positions, which are not embedded in the coil end of the electric motor stator and appear on the surface of the coil end. 3 are arranged in a horizontal row. Then, the connecting portion housings 1, 2, 3 for connecting the lead wire and the lead wire of the electric motor
Are heat-welded by ultrasonic welding so that one side is an opening insertion portion (right side in the figure) and the other side is a bag shape, and then cut and formed.

The connecting portion insulating paper for insulating the connecting portion between the lead wire and the lead wire of the electric motor thus formed is attached to the electric motor stator of the single-phase electric motor, and the lead wire and the lead wire connecting portion are insulated. An example is shown in FIG. In FIG. 2, reference numerals 1, 2 and 3 respectively denote a connecting portion accommodating portion for connecting a lead wire and a lead wire of an electric motor of a connecting portion insulating paper, a core of a motor stator, a main coil 7, an auxiliary coil 8 and a lead 9. It is a line. The lead wire of the main coil 7 and the lead wire 9 are connected to the connection housing 1, the lead wire and the lead wire 9 of the auxiliary coil 8 are connected to the connection housing 2, and the common wire is drawn to the connection housing 3. And the lead wire 9 are electrically connected and inserted by soldering, welding, caulking or the like.

After inserting the connecting portion into the connecting portion accommodating portion 3, the pedestal portion 5 of the insulating paper is embedded between the main coil 7 and the auxiliary coil 8, and then racing is performed to press and shape the coil end, Fix on the end surface. At this time, since the connecting portion accommodating portions 1, 2 and 3 are not embedded in the coil end of the motor stator and are exposed to the coil end surface, for example, the connecting portion accommodating portions 1, 2 and 3 are Solder, weld,
Even if a protrusion such as a caulking terminal is generated, pressure stress is not applied when the coil is pressed, so the protrusion does not break through the insulating paper at the connection part and cause insulation failure such as a rare short circuit. .

In the above example, the embodiment in which the lead wire and the lead wire connecting portion are insulated by being attached to the motor stator of the single-phase motor has been described. The same applies to the insulation treatment of the lead wire connecting portion.

Connecting portion of the lead wire of the electric motor Inserting the connecting portion where the lead wire of the electric motor and the lead wire are electrically connected by soldering, welding, or caulking into the accommodating portion housings 1, 2 and 3 of the insulating paper. Then, the pedestal portion 5 of the insulating paper is inserted between the outer coil and the intermediate coil or between the intermediate coil and the inner coil and fixed to the coil end surface. Also at this time, since the connecting portion accommodating portions 1, 2 and 3 are not embedded in the coil end of the motor stator and come out to the coil end surface, for example, the connecting portion accommodating portions 1, 2 and 3 Even if a protrusion such as solder, welding, or caulking terminal is generated at the connection part of the, the pressure stress during coil pressurization will not be applied, so that the protrusion will break through the insulation paper at the connection part and prevent insulation such as rare shorts. There is no such thing as a defect.

[0014]

As described above, according to the present invention, the connecting portion insulating paper for insulating the connecting portion between the lead wire and the lead wire of the electric motor is attached to one end portion of the connecting portion insulating paper when the electric motor stator is attached. The pedestal portion embedded in the coil end of the electric motor stator and the outer peripheral end portion of the insulating paper facing the pedestal portion are insulated from each other and embedded in the coil end of the electric motor stator. Without connecting to the coil end surface, the connection parts of the motor's lead wires and lead wires at multiple locations are arranged and arranged in a horizontal row. Even if inserted into the coil end, the connecting part of the coil is located on the surface of the coil end, so even if the coil end is pressure-shaped after racing,
Since the connection portion storage portion is not subjected to pressure stress due to the pressure stress of the coil, even if a protrusion such as solder, welding, or caulking terminal is generated in the connection portion inside the connection portion storage portion, the protrusion It is possible to provide good connection part insulation performance without breaking through the connection part insulation paper and causing insulation failure such as a rare short circuit.

[Brief description of drawings]

FIG. 1 shows a top view, a front view and a side view of a connecting portion insulating paper that insulates a connecting portion between a lead wire and a lead wire of an electric motor of the present invention.

FIG. 2 is an embodiment in which the insulating paper of the connecting portion of the present invention is attached to a motor stator of a single-phase motor for insulation treatment.

FIG. 3 shows a top view and a front view of a conventional insulating paper for connecting a lead wire and a lead wire of an electric motor.

[Explanation of symbols]

 1, 2, 3 ... Connection part storage part 4 ... Ultrasonic welding part 5 ... Pedestal part 6 ... Motor stator core 7 ... Main coil 8 ... Auxiliary coil 9 ... ·Lead

Claims (3)

[Claims] 1. A connecting portion insulating paper for insulating a connecting portion between a lead wire and a lead wire of an electric motor, wherein one end portion of the connecting portion insulating paper is a coil end of the electric motor stator when attached to the electric motor stator. A pedestal portion embedded in the inside and an outer peripheral end of the insulating paper facing the pedestal portion are in a mutually insulated state, and are not embedded in the coil end of the motor stator, Insulation paper for connecting a lead wire of an electric motor, characterized in that the lead wire connecting portion and a housing for connecting the lead wire of the electric motor are formed so as to form a horizontal row. 2. A pedestal portion embedded in a coil end of the electric motor stator at one end portion of the connecting portion insulating paper, and an outer periphery of the insulating paper facing the pedestal portion. The end portions are insulated from each other, and a plurality of electric motor lead wires and lead wire connection portion accommodating portions are arranged in a row in a row so as not to be embedded in the coil end of the electric motor stator and to be exposed on the coil end surface. After connecting the connection part of the lead wire of the motor, which is electrically connected by soldering, caulking, etc., to the connection part storage part of the insulating paper A method of insulating a lead wire and a lead wire connecting portion of a single-phase motor in which the pedestal portion of the insulating paper is inserted between a main coil and an auxiliary coil and fixed to a coil end surface. 3. A pedestal portion embedded in a coil end of the electric motor stator at one end portion of the connecting portion insulating paper, and an outer periphery of the insulating paper facing the pedestal portion. The end portions are insulated from each other, and a plurality of electric motor lead wires and lead wire connection portion accommodating portions are arranged in a row in a row so as not to be embedded in the coil end of the electric motor stator and to be exposed on the coil end surface. After connecting the connection part of the lead wire of the motor, which is electrically connected by soldering, caulking, etc., to the connection part storage part of the insulating paper , The pedestal portion of the insulating paper is inserted between the outer coil and the intermediate coil, or between the intermediate coil and the inner coil to fix the pedestal portion of the three-phase electric motor to the lead wire and the lead wire connecting portion. Insulation Processing method.