JPH1196887A - Wound element fuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart a time-lag characteristic to a wound element fuse, prevent deterioration of its fusing characteristic and improve difficulties in its workability by forming extendedly an element wire by winding two thin metal element wires around a core material in the cross-like form. SOLUTION: A wound element A is composed by winding two element wires 1 and 2 comprised of a Cu-Ag coat-type metal wire around a core wire 3, made of an inorganic fiber such as glass fiber or the like in the cross-like form. In this case, a thin wire having a diameter of 0.04-0.10 mm is used for the metal element wires 1 and 2. Thereby, it has a semi-time-lag characteristic, high cut-off capability equal to that of a high current rating (more than 4 amperes) product and low power consumption, so that its heating value in carrying current can be reduced. In addition, because the element wires 1, 2 are thin, the workability in the winding process is improved, and its affinity to the terminal solder at assemblage time is also improved. Thereby, its assembly workability can be improved in addition to the fusing performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding element fuse having two element wires (1) and (2) wound in a cross shape around a core material and having a time lag characteristic.

[0002]

2. Description of the Related Art A fuse using an element wire in which one element wire is wound in a cross shape around a core material is known as disclosed in Japanese Patent Publication No. 62-20649.

[0003] However, the fuse disclosed in this publication has a high temperature with respect to an overcurrent, so that the fusing characteristics may be lost.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional fuse having a single thick metal element wound around a core material. It was developed for.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and as a result of continuing research and development, has reached the present invention. By winding two thin metal element wires in a cross shape around a core material, An object of the present invention is to provide a novel fuse having a time lag characteristic, avoiding a high temperature at the time of fusing, and improving workability.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a front view of a fuse using a winding element A of the present invention, and FIG. It is shown.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, A is an element line, and (3)
Is a core wire made of an inorganic fiber such as glass fiber, and (1) and (2) are elements, which are Cu-Ag coated metal wires. This metal filament wire has a diameter of 0.04.
Use a fine line of ~ 0.10.

[0008]

The fuse using the winding element of the present invention has a semi-time lag characteristic, has a high breaking capability of a high current rated (4A or more) product, and has a small power consumption, so that a small amount of heat is generated during energization. .

Further, the workability of the winding process is good because the element wire is thin, and the terminal wire at the time of assembly is well adapted. As compared with the conventional fuse, an excellent work effect is obtained in that the assembling workability is improved in addition to the fusing performance.

[Brief description of the drawings]

FIG. 1 is a front view of a fuse of the present invention.

FIG. 2 is an enlarged view of an element line.

Claims (1)

[Claims] 1. A wire wound element fuse comprising an element wire A in which two element wires (1) and (2) are wound around a core material (3) in a cross shape.