JPH03141626A - Coil lead wire connecting method - Google Patents

Abstract

PURPOSE:To facilitate the connection and the realize secure connection by inserting the enamel wire being led out from a coil body into a connection pipe, and calking the connection pipe, and mechanically force-bonding the enamel wire with an outer lead wire, and also soldering the end face of the enamel wire with the outer lead wire. CONSTITUTION:An enamel wire 1 and an outer lead wire 3 are made to abut on each other, and the tops of the lines 1 and 3 are inserted in a metallic tubular connection pipe 6. And the pipe 6 is pressed to calk itself thus a small diameter part 7 is made, and the line 1 and a strand 5 are force-bonded inside the small diameter part 7. In this force-bonding, stress is also added to the insulating film of the wire 1, and one part of the insulating film is exfoliated by flaws, etc., and electrical connection becomes favorable. Furthermore, soldering 8 is done inside the top of the connection pipe 6. Hereby, the connection becomes easy, and secure connection can be done.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a coil lead wire connection method for connecting an external lead wire to an enameled wire drawn out from a coil body and coated with an insulation coating.

(Prior Art) As a conventional method for connecting a coil lead wire of this type, for example, as shown in FIG. The coating is mechanically f, II Fll L , and the stranded wire 5 of the external lead wire 3 from which the insulation coating 4 has been removed is wound around the portion of the enameled wire 1 from which the insulation coating has been peeled off, and soldering is performed. Connection is being made.

Another known method is to use a butt connector instead of soldering.

(Problem to be solved by the invention) However, the insulation coating of the enameled wire 1 taken out from the coil body of the reactor generally has a heat-resistant insulation temperature class of 1.
Since it is H type at 80° C., it is difficult to peel it off at any soldering temperature, and as mentioned above, the insulating film must be peeled off mechanically, which is a problem.

Furthermore, when the insulation coating is mechanically peeled off, the peeled insulation coating turns into dust, which is harmful to the human body and may adhere to the coil body, causing insulation failure. moreover,
Current capacity ff115A~2OA The enamelled wire 1 of the coil body of the actuator is 2φ or more -1=, and the stranded wire 5 is 2~3.
5 mm2, so the stranded wire 5 of the external lead wire 3 may come off due to springback, or if moisture-resistant varnish or the like penetrates into the butt connector that is not soldered, the varnish may have entered between the enameled wire 1 and the stranded wire 5. This may cause insulation failure.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a method for connecting coil lead wires that facilitates connection work and ensures reliable connection.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a coil lead wire connection method for connecting an external lead wire to an enameled wire drawn out from a coil body, in which the enameled wire and the external lead wire are connected to one tubular connecting pipe. The connecting tube into which the enameled wire and the external lead wire have been inserted is crimped to crimp the enameled wire and the external lead wire, and the end face of the enameled wire inserted into the connecting tube and the connecting tube are crimped. This is for soldering the external lead wires.

(Function) The present invention inserts the enameled wire and the external lead wire drawn out from the coil body into the connecting tube, swages the connecting tube, mechanically crimps the enameled wire and the external lead wire, and connects the end face of the enameled wire with the external lead wire. The enameled wire and the external lead wire are electrically and mechanically connected by soldering to the external lead wire.

(Example) Hereinafter, a method for connecting a coil lead wire of the present invention will be described with reference to the drawings. Note that parts corresponding to those of the conventional example shown in FIG. 2 will be described with the same reference numerals.

The enamelled wire 1 is integrated with a coil body as a power inverter glue actor, for example, and is coated with an enamel coating as an insulating wave film, and an end face 2 is formed at the tip by cutting at an angle to increase the cross-sectional area. . Also,
The external lead wire 3 is made of a stranded wire 5 having an insulating corrugated film 4 made of insulating resin on the outer periphery, and the insulating corrugated film 4 is peeled off near the tip and the stranded wire 5 is exposed.

Then, the enameled wire 1 and the external lead wire 3 are brought into contact with each other, and the enameled wire 1 and the external lead wire 3 are inserted into the circular metallic connecting tube 6 at the tip thereof.

In addition, in order to ensure insulation, at this time, enameled wire 1
The end surface 2 at the tip of the connecting tube 6 should not protrude from inside the connecting tube 6,
The exposed part of the stranded wire 5 from which the insulating wave film 4 of the external lead wire 3 has been peeled off is also prevented from protruding too much from the connecting pipe 6.

Then, the connecting tube 6 is pressed and crimped to form a small diameter portion 7, and the enameled wire 1 and the stranded wire 5 are crimped inside this small diameter portion 7. Further, during this crimping, stress is also applied to the insulating wave film of the enameled wire 1, and a part of the insulating film is peeled off by a or the like, resulting in better electrical connection.

Furthermore, solder 8 is applied within the tip of the connecting tube 6 to ensure electrical and mechanical connection between the end surface 2 of the enamelled wire 1 and the stranded wire 5.

Note that after inserting the enameled wire 1 and the stranded wire 5 into the connecting tube 0, soldering 8 is first performed, and then the connecting tube 6 is
You may also tighten it.

According to the above embodiment, the end surface 2 of the tip of the enameled wire 1 exposed from the insulating coating is sloped to increase the cross-sectional area, and the connecting tube 6 is crimped to tighten the enameled wire 1 and the wire. Since the wire 5 is pressed and a part of the insulating coating of the enameled wire 1 is peeled off, the electrical connection can be made more secure without mechanically applying the insulating wave film of the enameled wire 1.

In particular, since the enameled wire 1 of a reactor used in an ishiverter air conditioner or the like has a diameter of 2φ or more, the contact area of the end surface 2 is sufficient.

〔Effect of the invention〕

According to the present invention, the enameled wire and the external lead wire drawn out from the coil body are inserted into one connecting tube, the connecting tube is crimped to crimp the enamelled wire and the external lead wire, and the end face of the enameled wire and the external By soldering the lead wire, there is no need to mechanically peel off the insulation coating of the enamelled wire, which will not harm the human body or cause insulation defects due to adhesion to the coil body. Even if varnish or the like penetrates, it is difficult for the varnish to get into the electrical connection parts, making the connection work easy and ensuring the connection.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a side view showing a conventional example. 1... Enamelled wire, 2... End face, 3... External lead wire,
6. Connection pipe. eyebrow temple

Claims (1)

[Claims] (1) In a coil lead wire connection method of connecting an external lead wire to an enameled wire drawn out from a coil body, the enameled wire and the external lead wire are both inserted into one tubular connecting pipe, and the enameled wire and the The connecting tube into which the external lead wire has been inserted is crimped to crimp the enameled wire and the external lead wire, and the end face of the enameled wire inserted into the connecting tube and the external lead wire are soldered. Coil leader wire connection method.