JPH08166422A - Method and jig for withstand voltage test of flat cable - Google Patents

Abstract

PURPOSE: To perform withstand voltage test efficiently and simultaneously for short flat cables having various shapes by repasting the insulation tape. CONSTITUTION: An overvoltage is applied to a voltage applying part 64, i.e., one exposed conductor part, of a flat cable sheet 62 from which a plurality of cables 30 can be obtained by cutting at the exposed conductor parts 61. The flat cable sheet 62 is then sandwiched by a pair of electrode sheets 76 each applied with an insulating sheet 80 to a region touching the exposed conductor part 61 and withstand voltage test is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a withstand voltage test method and withstand voltage test apparatus for a flat type electric wire, and particularly for a flat type electric wire having a plurality of exposed conductor portions.

[0002]

2. Description of the Related Art A flat wire is manufactured, for example, by the method shown in FIG. That is, the plurality of conductors 12 wound around the conductors 12 are guided by the conductor guides 14 in a state where the plurality of conductors 12 are arranged in parallel and supplied between the pair of heating rolls 16. The insulating film 20a wound around the insulating film supply unit 18 is supplied from the lower surface side of the conductor 12 supplied between the heating rolls 16, and the window opening section 2 is supplied from the upper surface side of the conductor 12.
The insulating film 20b cut off at a plurality of points by 2 is supplied. Then, in the heating roll 16, by sandwiching the conductors 12 from above and below with the insulating films 20a and 20b and pressing the conductors 12, as shown in FIG. The model electric wire sheet 24 is formed, and the flat electric wire sheet 24 is wound by the product winding unit 26 and stored.

As described above, in the flat type electric wire sheet 24, the conductors 12 arranged in parallel are cut off at a plurality of positions by the insulating film 20a and the window opening 22.
With the structure in which it is sandwiched from above and below and crimped, the conductor 12 is provided on the cut-out portion of the upper insulating film 20b.
Is exposed and a plurality of conductor exposed portions 28 are formed. The flat electric wire sheet 24 is exposed at each conductor exposed portion 28 as shown in FIG.
When cut along the broken line of, individual flat electric wires 30 having terminals 29 with exposed conductors at both ends are obtained as shown in FIGS. 9 and 10.

The flat electric wire 30 obtained as described above
The withstand voltage test was conducted by the method shown in FIGS.

In the first conventional withstand voltage test method shown in FIG. 11, the flat electric wire 30 obtained by cutting the flat electric wire sheet 24 is prepared so that the terminal portions 29 at both ends thereof are exposed from the water surface. , Submerge in the water in the aquarium 32. Then, by electrically connecting the one terminal portion 29 to the output terminal 36 of the withstanding voltage tester 34 via the terminal chuck 38, each conductor 12 of the flat type electric wire 30 has a voltage higher than the rated voltage of the flat type electric wire 30. While applying the overvoltage, the test rod 39 connected to the input terminal 37 of the withstanding voltage tester 34 is immersed in the water in the water tank 34 so that the overvoltage applied to the conductor 12 is not leaked into the water, that is, the The withstand voltage test of the mold wire 30 is performed.

In the second conventional test method shown in FIG. 12, one terminal portion 29 of the flat type electric wire 30 is electrically connected to an output terminal 36 of a withstanding voltage tester 34, and each of the flat type electric wires 30 is connected. While applying an overvoltage to the conductor 12, both sides of the flat wire 30 are sandwiched by a pair of electrode sheets 40 attached to a pair of insulating plates 31, and both electrode sheets 40 are electrically connected to an input terminal 37 of a withstand voltage tester 34. And the flat wire 30 is subjected to a withstand voltage test.

The withstand voltage tester 34 used for such withstand voltage test is, as shown in FIG.
An output terminal 36 for supplying an overvoltage equal to or higher than the rated voltage of the flat electric wire 30 to the conductor 12 of 0 and the water in the water tank 32, or
A pair of electrode sheets 40 sandwiching the flat electric wire 30 from above and below
Has an input terminal 37 that is electrically connected to the conductor 30, and further includes a voltmeter 41 that indicates the voltage value supplied to the conductor 30, an output adjustment knob 42 that adjusts the voltage value, and the flat wire 30 is a withstand voltage test. A pass / fail display lamp 43 for determining whether or not the test is passed and displaying the result, a test start switch 44, a test end switch 45, and the like are provided.

[0008]

Then, the flat type electric wire 30
If the length of the wire is long to some extent, an efficient withstand voltage test can be performed by applying an overvoltage to the plurality of conductors 12 of the flat wire 30 at a time by using the first withstand voltage test method. it can. However, when the length of the flat electric wire 30 is short, it is difficult to immerse the central portion of the flat electric wire 30 in the water in a state where only the terminal portions 29 at both ends thereof are taken out of the water. In order to perform a high withstand voltage test of the flat electric wire 30, when the submerged ratio of the flat wire 30 is increased, the terminal portion 29 comes close to the water surface and the terminal portion 29 and the test rod 39 are short-circuited via the water in the water tank. More likely to.

Therefore, when the flat wire 30 is short, the second withstand voltage test method is used. In the second withstand voltage test method, the flat wire 30 is subjected to a withstand voltage test one by one. Therefore, there is a problem that the test time is very long. Using a pair of wide electrode sheets 40,
It is also possible to arrange the flat electric wires 30 side by side between the pair of electrode sheets 40 and test a plurality of flat electric wires 30 at a time, but in this case, the flat electric wires 30 of a certain length are dealt with. However, there is a problem in that the electrode sheet 40 must be prepared according to the flat electric wires 30 having various lengths.

Therefore, an object of the present invention is to provide a flat electric wire sheet in which a plurality of conductors arranged on a plane are covered with insulating films from both sides thereof to form a plurality of conductor exposed portions on at least one insulating film side. A flat wire withstand voltage test method that cuts multiple flat wires to form a plurality of flat wires, and a jig for the test can efficiently test the flat wire even with a short flat wire. Another object of the present invention is to provide a withstand voltage test method capable of withstanding voltage tests of flat electric wires having various shapes and a jig for the test.

[0011]

In order to solve the above-mentioned problems, a method for withstanding voltage of a flat electric wire according to claim 1 is to cover a plurality of conductors arranged on a plane with insulating films from both sides thereof. In a withstand voltage test method for a flat electric wire to form a plurality of flat electric wires by cutting a flat electric wire sheet having a plurality of exposed conductors on at least one insulating film side, in the flat electric wire sheet, While applying overvoltage from the output terminal of the withstanding voltage tester to one of the exposed conductors,
An insulating tape is attached to a contact area between the conductor exposed portions of the pair of electrode sheets arranged so as to sandwich the flat electric wire sheet at a position not contacting the conductor exposed portion to which an overvoltage is applied. The electrode sheet is electrically connected to an input terminal of the withstand voltage tester to test the withstand voltage of the insulating film.

Further, in a withstand voltage test jig for a flat electric wire according to a second aspect of the present invention, a plurality of conductors arranged on a plane are covered with insulating films from both sides thereof, and a plurality of conductors are provided on at least one insulating film side. In a jig for withstanding voltage test of a flat electric wire for cutting a flat electric wire sheet on which a conductor exposed portion is formed to form a plurality of flat electric wires, the electric wire is electrically connected to an output terminal of a withstanding voltage tester, An application electrode for applying an overvoltage to the conductor from one of the exposed conductors of the flat wire sheet, and a flat wire that is placed on both sides of the flat wire at a position that does not contact the exposed conductor of the flat wire. And a pair of electrode sheets electrically connected to the input terminals of the withstand voltage tester, and an insulating tape removably attached to a contact area of the electrode sheet with the exposed conductor portion. Special To.

Further, in a withstand voltage test method for a flat type electric wire according to a third aspect of the present invention, a pair of insulations obtained by cutting at least one side at a plurality of places on a conductor continuously arranged on the same plane along a wiring route. In a withstand voltage test method of a flat electric wire for cutting a flat electric wire sheet having a plurality of conductor exposed portions formed by coating a film to form a plurality of flat electric wires, among the conductor exposed portions of the flat electric wire sheet. While applying an overvoltage from the output terminal of the withstand voltage tester to one of the above, the other of the pair of electrode sheets arranged in contact so as to sandwich the flat electric wire sheet at a position that does not contact the exposed conductor of the overvoltage. An insulating tape is attached to a contact area with the conductor exposed portion, and the both electrode sheets are electrically connected to an input terminal of the withstand voltage tester to test the withstand voltage of the insulating film.

[0014]

According to the withstand voltage test method for a flat electric wire and the jig for testing the flat electric wire, the flat electric wire sheet before being cut and separated into a plurality of flat electric wires is used. Insulating tape is removably attached to the contact area of the conductor exposed portion of the electrode sheet depending on the position where the conductor exposed portion is formed so that the conductor exposed portion of the electric wire sheet does not make electrical contact with the electrode sheet. By performing a withstand voltage test on a plurality of flat electric wires, it is possible to efficiently perform a withstand voltage test on a plurality of flat electric wires at one time. Furthermore, even for various flat electric wire sheets with different positions of exposed conductors, by changing the attachment position of the insulating tape,
It is possible to perform a withstand voltage test.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings of FIGS. The flat type electric wire for which the withstand voltage test is performed in this embodiment is, for example, a wiring device 50 as shown in FIG.
Is manufactured using. This wiring device 50 is mounted by a mounting table 52 on which an insulating film 54 is mounted, a conductor guide 14 for guiding the conductor 12 wound around the conductor supply unit 10, and a moving device 56 according to a preset wiring route. Table 5
It is composed of a wiring head 58 that freely moves in the vertical and horizontal directions on the wiring 2 and lays the conductor 12 guided by the conductor guide 14 on the insulating film 54 mounted on the mounting table 52.

A method of manufacturing a flat electric wire by the wiring device 50 having the above-described structure will be described. First, the insulating film 54 made of a polyimide resin having a plurality of window openings 60 formed by cutting the electric wire at intervals. The insulating film 54 is placed on the mounting table 5 in a state where the room temperature adhesive is applied to one surface and the window opening 60 is provided so that the surface coated with the room temperature adhesive is the upper side.
Place on top of 2. Then, the conductor 12 is continuously wound around the surface of the insulating film 54 coated with the room temperature adhesive by the wiring head 58 in a predetermined number of times in accordance with a preset wiring route (see FIG. 2). After that, the insulating film 55 is covered and adhered from above the laid conductor 12 to form a flat electric wire sheet 62 as shown in FIG. In one of the window openings 60 of the flat electric wire sheet 62, the conductors 12 are crossed and wired to form conductor exposed portions as the application portions 64. In the other window openings 60, the conductor 1 is exposed.
Normal conductor exposed portion 6 exposed by wiring 2 arranged in parallel
1 is formed. When the flat type electric wire sheet 62 thus obtained is cut along the broken line shown in FIG.
And individual flat wires 30 as described in FIG. 10 are obtained. In the process of wiring, the applying unit 64
Other than the flat electric wire 30, that is, the product portion 65
It is necessary to make wiring so that the conductors 12 do not intersect with each other.

In the flat wire 30 manufactured as described above, the position of the window opening 60 of the flat wire sheet 62 can be freely changed, and the wiring route can be freely set. The flat electric wire 30 having various shapes can be obtained.

The withstand voltage test method for the flat electric wire 30 and the test jig 68 obtained by the above manufacturing method will be described below. Since the description of the withstand voltage tester 34 is the same as that already described with reference to FIG. 13, the same or corresponding parts are designated by the same reference numerals, and the description thereof will be omitted.

First, in the withstanding voltage test jig 68, as shown in FIGS. 4 and 5, the applying portion side cover 70 and the electrode sheet side cover 72 are closed on one long side of the long plate-shaped test base 66. It can be installed freely. Then, the applying unit side cover 7
An applying sheet 74 for applying an overvoltage to the applying portion 64 of the flat electric wire sheet 62 is attached to the inner surface side of 0, and an external withstand voltage tester 34 is electrically connected to the applying sheet 74 on the outer surface side thereof. An application electrode 71 used for connection with the output terminal 36 of is provided. Further, a pair of electrode sheets 76 sandwiching the product portion 65 of the flat electric wire sheet 62 are attached to the inner surfaces of the electrode sheet side cover 72 and the test stand 66, respectively, and the outer surface side of the electrode sheet side cover 72 is provided with both electrodes. An electrode sheet side terminal 73 electrically connected to the electrode sheet 76 and electrically connected to the input terminal 37 of the external withstand voltage tester 34 is provided. A safety cover 78 is provided around the withstand voltage test jig 38 to prevent an electric shock of a person who performs the test.

Next, a test method using the withstand voltage test jig 68 having the above-described structure will be described below.

First, as shown in FIG. 5, the flat electric wire sheet 62 is placed in a position such that the applying portion 64 contacts the applying sheet 74 with the insulating film 54 having the window opening portion 60 facing upward. At the same time, the product part 65 is placed on the test stand 66 so that the product part 65 is sandwiched between the pair of electrode sheets 76.

Then, as shown in FIG. 6, the electrode sheet 76 provided on the electrode sheet side cover 72 is prevented from electrically contacting the exposed conductor portion 61 of the flat electric wire sheet 62.
An insulating tape 80 is attached to a contact area of the electrode sheet 76 with the exposed conductor portion 61.

After that, the voltage application side cover 70 and the electrode sheet side cover 72 are closed, and a withstand voltage test of the product portion 65 of the flat wire sheet 62 is performed by the withstand voltage tester 34.

When performing a withstand voltage test on another type of flat electric wire sheet 62, that is, when the position of the exposed conductor portion 61 is different, the insulating tape 80 is peeled off to remove the flat electric wire sheet 62. It may be attached to the position of the exposed conductor portion 61.

Further, even when different shapes of flat electric wires are mixedly produced on the same flat electric wire sheet 62, the same withstand voltage test jig 68 can be obtained by appropriately changing the position of the insulating tape 80. Withstand voltage test can be carried out.

According to the above-mentioned method for testing the withstand voltage of the flat electric wire and the jig 68 for the test, the flat electric wire sheet before being cut into each flat electric wire 30 even if the flat electric wire 30 has a short length is used. By performing the withstand voltage test in the state of 62, it is possible to perform the withstand voltage test of a large number of flat conductors 30 at one time, and it is possible to improve the efficiency of the withstand voltage test.

It should be noted that the applying portion 64 does not have to be provided by crossing the conductors 12 and arranging the conductors from one of the conductor exposed portions 61.
It suffices if an overvoltage can be applied to all the conductors 12.

Further, the withstand voltage test jig 6 as described above is used.
No. 8 is not limited to the flat electric wire sheet 62 to be subjected to a withstand voltage test manufactured by the wiring device 52 as described above, and a flat electric wire formed with a plurality of conductor exposed portions on the same plane. If it is a sheet, a withstand voltage test can be performed.

[0029]

As described above, according to the withstand voltage test method for a flat electric wire and the jig for testing the flat electric wire of the present invention, the flat electric wire sheet before being cut and separated into a plurality of flat electric wires is used. In order to prevent the exposed conductor portion of the flat wire sheet from coming into contact with the electrode sheet, an insulating tape is removably attached to a contact area of the electrode sheet with the exposed conductor portion in accordance with the position where the exposed conductor portion is formed. By performing the withstand voltage test, the withstand voltage test can be efficiently performed at one time.

In addition, when the position of the conductor exposed portion of the flat electric wire sheet is different, that is, when the shape of the flat electric wire formed by cutting is different, or when the flat electric wires having different shapes are formed on the same flat electric wire sheet. Even if they are manufactured in a mixed manner, by changing the position of the attached insulating tape appropriately, it is possible to perform a withstand voltage test of a flat wire with a different shape using the same jig for withstand voltage test. is there.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wiring device used in an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a wiring route by the device of the above.

FIG. 3 is a plan view showing a flat electric wire sheet.

FIG. 4 is a front view showing a withstand voltage test jig according to an embodiment of the present invention.

FIG. 5 is a front view of the above.

FIG. 6 is a front view of the above.

FIG. 7 is an explanatory view showing a method for manufacturing a flat electric wire.

FIG. 8 is a perspective view showing a flat electric wire sheet.

FIG. 9 is a cross-sectional view showing a flat electric wire.

FIG. 10 is a perspective view of the above.

FIG. 11 is an explanatory diagram showing a conventional withstand voltage test method.

FIG. 12 is an explanatory diagram showing another conventional withstand voltage test method.

FIG. 13 is a front view showing a withstand voltage tester.

[Explanation of symbols]

 12 conductor 30 flat electric wire 34 withstand voltage tester 36 output terminal 37 input terminal 54, 55 insulating film 61 conductor exposed portion 62 flat electric wire sheet 68 jig for withstand voltage test 71 applied electrode 76 electrode sheet 80 insulating tape

Claims (3)

[Claims] 1. A plurality of conductors arranged on a plane are covered with insulating films from both sides thereof, and a flat electric wire sheet having a plurality of conductor exposed portions formed on at least one insulating film side is cut into a plurality of sheets. In the withstand voltage test method for a flat wire to form a flat wire, the overvoltage is applied from one of the output terminals of the withstand voltage tester to one of the exposed conductors of the flat wire sheet, while the overheated conductor is exposed. Part of the pair of electrode sheets arranged in contact with each other so as to sandwich the flat electric wire sheet, an insulating tape is attached to a contact area with the conductor exposed portion of the pair of electrode sheets, and the both electrode sheets are subjected to the withstand voltage. A withstand voltage test method for a flat wire, comprising electrically connecting to an input terminal of a tester to test the withstand voltage of the insulating film. 2. A plurality of conductors arranged on a plane are covered with insulating films from both sides thereof, and a flat type electric wire sheet having a plurality of conductor exposed portions formed on at least one insulating film side is cut into a plurality of sheets. In a jig for withstanding voltage test of a flat wire that forms a flat wire of the above, it is electrically connected to the output terminal of the withstanding voltage tester, and the conductor is exposed from one of the exposed conductors of the flat wire sheet. It is placed on both sides of the flat wire so as to sandwich the flat wire at a position where it does not come into contact with the applied electrode to which the overvoltage is applied and the exposed conductor to which the overvoltage is applied, and it is electrically connected to the input terminal of the withstand voltage tester. A jig for withstanding voltage test of a flat electric wire, comprising: a pair of electrode sheets; and an insulating tape detachably attached to a contact region of the electrode sheet with the exposed conductor portion. 3. A flat mold having a plurality of conductor exposed portions obtained by coating a conductor, which is continuously arranged on the same plane along a wiring route, with a pair of insulating films cut at least on one side at a plurality of locations. In a withstand voltage test method for a flat electric wire in which a plurality of flat electric wires are formed by cutting an electric wire sheet, one of the exposed conductors of the flat electric wire sheet is subjected to an overvoltage from an output terminal of a withstand voltage tester. , At a position that does not contact the conductor exposed portion to which an overvoltage is applied, attach an insulating tape to a contact region with another conductor exposed portion of a pair of electrode sheets arranged so as to sandwich the flat electric wire sheet, A withstand voltage test method for a flat electric wire, comprising electrically connecting both electrode sheets to an input terminal of the withstand voltage tester to test the withstand voltage of the insulating film.