JPH0665080B2 - Wire connection device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire connecting device used for internal wiring of electric appliances.

2. Description of the Related Art Conventionally, a structure as shown in FIG. 4 has been used for connection between a strand wire having a small cross-sectional area and a single wire having a larger cross section.

In the figure, reference numeral 1 is an electric wire with a small cross section,
Is a thermal fuse having a single lead wire 3 having a larger cross-sectional area than that, and 4 is a connector for connecting the lead wire 3 of the electric wire 1 and the thermal fuse 2.

The right end 5 of the connector 4 fixes a cover portion which is an insulator of the side wire. The central portion 6 of the connector 4 is a wire portion of the conductor of which the cover portion of the side wire 1 is stripped off, and the connector 4 has the same shape as the lead wire 3 of the thermal fuse 2 and the cross-sectional shape shown in FIG. They are crimped and electrically connected.

However, in the above configuration, since the cross-sectional area of the single wire is much larger than the cross-sectional area of the strand of the other side wire, a space is generated in the caulking portion, and the single wire and the connector are There are many floating wires that are not pressed in between.

When a tensile stress is applied to the connecting portion, the stress concentrates only on the pressure-welded element wire, and the element wire is easily broken to cause an electrically disconnected state.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to obtain a connecting device capable of press-connecting most of the strands of a lean electric wire to a single electric wire and a connector for reliable connection.

Means for Solving the Problems In order to achieve the above object, the present invention is a tubular connector,
It was composed of a conductor in which a plurality of strands were put together and an insulator covering the conductor, the insulator at the tip was peeled off, and it was inserted until the boundary between the conductor and the insulator was positioned in the middle of the connector. The electric wire and the conductor portion of the electric wire are inserted into the connector from the side opposite to the electric wire, and are composed of a single wire that is larger than the cross-sectional area of the electric wire. Are connected by pressing them in the radial direction.

Since the shape of the connector used for connecting is cylindrical, pressing the connector in the radial direction results in almost no void along the shapes of the single-wire electric wire with a large cross-sectional area and the wire with a side wire with a small cross-sectional area. Since most of the strands of the offset wire are pressed against the single wire and the tubular connector, stress does not concentrate on the limited strands even if the offset wire is pulled, ensuring tensile strength. To be done.

Furthermore, since the portion of the connector where the insulating cover is located also presses, the external force in the pulling direction is added and the strength is further increased.

In addition, even if external force other than tension such as bending is applied to the offset line,
Stress is not applied to the connection portion with the single wire by being supported by the opening portion of the connector or the pressing portion of the insulating coating portion.

Therefore, the electrical connection between the single wire and the offset wire is reliable even if the connecting portion is pulled or other external force is applied.

Examples Hereinafter, examples of the present invention will be described.

In the figure, reference numeral 11 is a cylindrical connector, and a cut-and-raised electric wire stopper 12 is formed in the central portion.

Reference numeral 13 is an electric wire in which 41 strands 14 each having a diameter of 0.05 mm are twisted together and covered with a vinyl chloride insulator 15. Only the tip L is stripped of the coating, and that portion is inserted into the connector 11 up to the wire stopper 12 of the connector 11.

16 is a thermal fuse for 10 A, 17 is a thermal fuse 16
This is a single wire lead part (diameter φ1.2 mm), and connector 1
1, the wire is inserted from the side opposite to the wire 13 on the front side to the wire stopper 12.

After setting as described above, by pressing the P portion of the connector 11 in the radial direction, as shown in FIG. 3, the inside of the connector 11 has a lead portion 17 of the thermal fuse 16 and an element of the wire 13. The wire 14 is pressure-contacted and connected.

Next, by pressing the Q portion of the connector 11 in the radial direction, the covering portion 15 of the electrode 13 is pressed against and fixed to the connector.

EFFECTS OF THE INVENTION As is apparent from the above description, a single wire having a large cross-sectional area and a plurality of strands having a small cross-sectional area are pressed inside the tubular connector, and the pressing portion has almost no void inside the connector, Securely connected.

Even if the tensile stress is applied from the outside, the stress is not concentrated on the limited strands, so that it is not easily broken.

Furthermore, since the Q portion of the connector where the coating of the electric wire is located is also pressed, the strength against tensile stress is increased, and the external force other than tension such as bending is applied to the Q portion and the opening of the connector. Since it is supported, no stress is exerted on the connecting portion between the electric wire and the single wire, and the connection can be maintained even against external force.

[Brief description of drawings]

1 is a perspective view of an electric wire connecting device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line BB of FIG. 1, FIG. 3 is a sectional view of a portion C of FIG. 1, and FIG. FIG. 5 is a perspective view of an electric wire connecting device showing a conventional example, and FIG. 5 is a sectional view of a portion A in FIG. 11 ... connector, 13 ... electric wire, 14 ... element wire, 15 ...
… Insulator, 17… Lead wire.

Claims (1)

[Claims] 1. A tubular connector, a conductor in which a plurality of strands are laid together, and an insulator covering the conductor, the insulator at the tip is peeled off, and the boundary between the conductor and the insulator is separated. An electric wire that is inserted until it is located in the middle of the connector, and a single-wire electric wire that is inserted into the connector from the opposite side of the electric wire, up to the conductor portion of the electric wire, and that has a larger cross-sectional area than the conductor of the electric wire. And a connecting device for an electric wire, comprising two ends of the connector pressed in the radial direction of the connector.