KR20140133256A

KR20140133256A - High voltage fuse

Info

Publication number: KR20140133256A
Application number: KR1020130053175A
Authority: KR
Inventors: 이석호
Original assignee: 한국단자공업 주식회사
Priority date: 2013-05-10
Filing date: 2013-05-10
Publication date: 2014-11-19

Abstract

The present invention relates to a high voltage fuse. The insulating housing 10 forms the appearance of the high-voltage fuse of the present invention. The insulating housing 10 is divided into a first insulating housing 11 and a second insulating housing 11 ', and an internal space 12' is formed therein. A sleeve 19 is installed in the inner space 12 '. The insulating housing 10 is composed of a cylindrical body 12 and end caps 14 at both ends of the body 12. A circular locking ring 18 surrounding the outer surface of the end cap 14 is provided to fasten the first insulating housing 11 and the second insulating housing 11 '. A fuse terminal 20 is installed so that the fusing end 22 is positioned in the internal space 12 '. At both ends of the fuse terminal 20, first and second connection portions 24 and 24 'are provided. The end cap 14 is formed with a fuse hole 15 through which the fuse terminal 20 passes. The fuse hole 15 communicates with or is adjacent to the fuse hole 15 to form a small hole 16. The ash material is injected into the inner space 12 'through the sub-inlet 20. The small-sized re-entry opening 16 is closed by the second connecting portion 24 'itself or the bent portion 26 formed by bending the second connecting portion 24'. According to the present invention as described above, there is an advantage that it is easier to insert the soot ash into the inner space 12 '.

Description

High voltage fuse

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high voltage fuse, and more particularly, to a high voltage fuse in which an operation of filling a softer material to prevent the generation of a secondary arc at the time of cutting a fuse end portion is facilitated.

The fuse is used to supply electric power from an electric source such as a battery or the like to an electrical component, thereby quickly disconnecting the power supply when an electrical component is overloaded. Some of these fuses are used in electrical components where high voltage is used. In a fuse used at a high voltage, an arc generated when the fuse terminal of the fuse terminal is melted due to overloading causes electric power to be transmitted to the electric component, and thus there is a risk of secondary shock to the electric component or fire.

In order to solve such a problem, it is necessary to provide a fuse used at a high voltage so as to be able to cut off an arc when the fuse is blown. For this purpose, a cavity such as sand is filled in the space where the fusing part is accommodated to surround the fusing part.

However, there is a problem that the filling of the soot ash in the space for accommodating the blowing end portion is very troublesome. Particularly, it is very difficult to assemble the fuse to accommodate both the fuse terminal having the free end in the inside of the fuse and the loudspeaker.

Generally, the housing of the high-voltage fuse is generally divided into two parts symmetrically in the longitudinal direction. In the prior art, the structure for coupling the separated housings is configured to shield the entrance to the inside of the high-voltage fuse. Therefore, since the housings can be coupled to each other only after inserting the ash material, the housings are not coupled at the time of filling the inside of the housing, so that the assembling work of the high voltage fuse is troublesome.

Japanese Patent No. 4192266

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above, and to provide an insulating housing in a state where the insulating housing is coupled when filling the inner space of the insulating housing.

According to an aspect of the present invention for achieving the above-described object, the present invention provides an internal space formed with an end cap at both ends of a body portion, and the end cap is formed with a small- And a fuse terminal which is installed through the end caps at both ends of the insulating housing so that a fusible end portion melted and melted when overloaded is positioned in the internal space and first and second connection portions protrude from both ends of the end cap, One side of the terminal closes the SOHO inlet.

And the subheading inlet closes one of the connections of the fuse terminal.

And the bore portion formed by bending one of the connecting portions of the fuse terminal is closed.

The insulative housing comprises a first insulative housing and a second insulative housing, wherein the first insulative housing and the second insulative housing are joined by a lock ring at the end cap.

A tubular sleeve is installed in the inner space of the insulating housing.

The following effects can be obtained in the high-voltage fuse according to the present invention.

In the present invention, a portion of the fuse terminal is configured to shield a small-sized ash inlet that fills the inside of the insulating housing with the small-sized ash instead of the locking ring for coupling the insulating housing. Therefore, the insulating housing can be coupled before filling the internal space of the insulating housing with the foaming material, so that the assembling work of the high-voltage fuse is very easy.

1 is a perspective view showing a preferred embodiment of a high-voltage fuse according to the present invention.
2 is an exploded perspective view showing a configuration of an embodiment of the present invention.
3 is a sectional view showing a configuration of an embodiment of the present invention.
4 is a principal perspective view showing a configuration of a housing constituting an embodiment of the present invention.

Hereinafter, preferred embodiments of a high voltage fuse according to the present invention will be described in detail with reference to the accompanying drawings.

According to the drawings, the insulating housing 10 forms the appearance of the high voltage fuse of the present invention. The insulating housing 10 is made of an insulating synthetic resin. The insulating housing 10 of this embodiment is generally cylindrical, but not necessarily.

The insulating housing 10 is divided into a first insulating housing 11 and a second insulating housing 11 'in this embodiment. However, the insulating housing 10 does not have to be divided into the first insulating housing 11 and the second insulating housing 11 ', but may be formed in a larger number or may be integrally formed.

The insulating housing 10 includes a body portion 12 and an end cap 14 provided at both ends of the body portion 12. In the present embodiment, the inside of the body 12 is an empty cylindrical shape and an internal space 12 'is formed therein. However, the shape of the body portion 12 may be various shapes such as a cross-sectional shape of a polygonal cylinder. The end cap 14 is made in the shape of a short cylinder or disc. However, the end cap 14 may also be formed in various shapes such as a square pillar or a flat hexahedron. The shape of the end cap 15 is most preferably a short cylindrical shape or a circular plate shape.

The end cap 14 shields both ends of the insulative housing 10. A fuse hole 15 is formed in the end cap 14 through a substantially central portion of a surface forming both longitudinal end faces of the insulating housing 10. The fuse holes 15 are formed through the side end caps 14, respectively. The fuse terminals 20 penetrate through the fuse holes 15 as will be described below.

A small inlet (16) is formed adjacent to or in communication with at least one of the fuse holes (15). The small-sized ash inlet 16 communicates the inside space 12 'with the outside, so that the small-sized ash can be inserted into the inside space 12'.

A locking ring 18 is provided to surround the outer surface of the end cap 14 at both ends of the insulating housing 10. The locking ring 18 serves to couple the first insulating housing 11 and the second insulating housing 11 '. The lock ring 18 is formed in a shape corresponding to the shape of the end cap 14, and is circular in this embodiment.

The inner space 12 'of the insulating housing 10 is provided with a cylindrical sleeve 19. The sleeve 19 is made of a metal material so that the soft material filled in the inner space 12 'chemically reacts with the first and second insulation housings 11 and 11' Thereby preventing the characteristic from being changed. The shape of the sleeve 19 need not necessarily be a cylindrical shape but a cylindrical shape.

A fuse terminal 20 is provided so as to penetrate through the insulating housing 10 and to protrude from both ends of the insulating housing 10 in the longitudinal direction. The fuse terminal 20 is formed of a conductive material. Preferably, the fuse terminal 20 is made of a conductive metal material. The fuse terminal 20 has a plate shape having a longer length than the width.

The body portion 20 'forms the skeleton of the fuse terminal 20. The body portion 20 'is of a plate shape having a larger width and a longer length than the thickness. The body portion 20 'can not be clearly distinguished from the connecting portion 24 or 24' or the free end portion 22 to be described below, but the free end 22 of the portion located in the internal space 12 ' May be referred to as a body portion 20 '.

A fusible portion 22 is provided at a portion of the body portion 20 'of the fuse terminal 20 that enters the inside of the insulating housing 10. Since the configuration of the fusing end 22 is not a gist of the present invention, a detailed description of the structure will be omitted. The fusing end 22 is a part that melts and breaks when an electric component is overloaded. A more specific configuration of the fusing end 22 will be omitted for simplicity.

At both ends of the fuse terminal 20, there are first and second connection portions 24 and 24 'protruding from the insulation housing 10, respectively. The first and second connection portions 24 and 24 'electrically connect the high voltage fuse to the outside.

A part of the second connection portion 24 ', which is a portion of the fuse terminal 20 which penetrates through the fuse hole 15, is bent and closely attached to the outer surface of the end cap 14. [ The bent portion 26 is a bent portion 26 which shields the small hole inlet 16 formed in the end cap 14. [ The bent portion 26 is not formed until the small-sized ash is introduced into the inner space 12 'through the small-sized ash inlet 16. That is, as shown by the dotted line in FIG. 4, the fuse terminal 20 is not yet bent and the foaming material is injected through the foaming material inlet 16, and then the bending part 26 is formed, Thereby blocking the inlet 16.

Hereinafter, the assembly of the high voltage fuse according to the present invention will be described.

The high voltage fuse according to the present invention is filled in the inner space 12 'of the insulating housing 10 so as to prevent the spark from being generated at the fusing end portion 22 of the fuse terminal 20 so as not to be transmitted to the insulating housing 10 Or the power is not supplied through the fuse terminal 20.

To this end, the insulator housing 10 is connected with the lock ring 18, and the insulator material is injected into the inner space 12 'of the insulative housing 10 through the small-sized ash inlet 16. Of course, the sleeve 12 and the fuse terminal 20 are already provided in the inner space 12 'of the insulating housing 10. In the case of the fuse terminal 20, the first and second connection portions 24 and 24 'and the bent portion 26 are not yet bent. Here, the connection portions 24 and 24 'may be re-injected in a state of being bent.

When the first insulating housing 11 and the second insulating housing 11 'are coupled to each other by using the lock ring 18 as in the present invention, the formation of the internal space 12' is assured. In other words, there is no problem that the inner space 12 'and the outside are communicated only through the SOHO receptacle 16 and the SOHO is leaked during the operation of injecting the SOH into the inner space 12' .

For reference, FIG. 4 shows a configuration of a state in which the small-amount re-injection operation is performed. Here, the fuse terminal 20 is shown in a dotted line for convenience of illustration. In the state shown in FIG. 4, the fuse hole 15 is closed by the fuse terminal 20, and the SOA inlet 16 is open.

When the injection of the filler material is completed through the small-sized ash inlet (16), the bending portion (26) of the fuse terminal (20) is formed. The bending portion 26 is formed in the fuse terminal 20 so that the small hole inlet 16 is closed so that the small hole of the inner space 12 'does not come out to the outside.

And, the high voltage fuse of the present invention is such that the connection portions 24 and 24 'are respectively coupled to a counterpart, for example, a terminal or the like in the connector. At this time, the first and second connection portions 24 and 24 'may be simultaneously coupled with the counter terminal or the like. This is because the extension directions of the first and second connection portions 24 and 24 'are the same.

When a high-voltage fuse is connected to a counter terminal and the circuit is connected to the high-voltage fuse, the electric component is supplied with the electric component and the electric component is used. Meanwhile, when the electrical component is overloaded, the fusing end 22 of the fuse terminal 20 is melted and broken, thereby preventing power supply to the electrical component from being cut off and damaging the electrical component.

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

For example, in the illustrated embodiment, the lock ring 18 is used to lock the engaged state of the first and second insulative housings 11, 11 ', but the first and second insulative housings 11, 11' The locking ring 18 may not be used if it can be engaged by a structure at a position corresponding to each other.

Also, the case of the sleeve 19 is not necessarily used. For example, even if there is no sleeve 19, damage to the first and second insulating housings 11, 11 'does not occur.

Although the first connection part 24 and the second connection part 24 'of the fuse terminal 20 extend in the same direction in the illustrated embodiment, the first connection part 24 and the second connection part 24' And the second connection portions 24 'may extend in opposite directions to each other.

In the illustrated embodiment, the bent portion 26 of the fuse terminal 20 is configured to close the small-hole re-entry opening 16, but not necessarily. For example, the second connection portion (not shown) of the fuse terminal 20 24 'may directly close the SOHO inlet 16. That is, the fuse terminal 20 is bent at a right angle at a position where the fuse terminal 20 is escaped from the fuse hole 15 to close the small-sized ash inlet 16.

10: insulated housing 11: first insulated housing
11 ': second insulating housing 12: body portion
12 '; Inner space 14: end cap
15: Fuse hole 16: SOHO re-entry
18: Lock ring 19: Sleeve
20: fuse terminal 20 ': body part
22: terminal end portion 24: first connection portion
24 ': second connecting portion 26: bent portion

Claims

An insulative housing formed with an inner space and formed with end caps at both ends of the body portion and having an outer end opening communicating with the inner space and the outside,
And a fuse terminal installed through the end caps at both ends of the insulating housing and having a fusing end portion melted and broken upon overloading, the fusing terminal being positioned in the internal space and the first and second connecting portions protruding from both ends of the end cap,
And one side of the fuse terminal closes the SOHO inlet.

2. The high voltage fuse of claim 1, wherein the SOHO receptacle closes one of the connections of the fuse terminal.

The high-voltage fuse according to claim 1, wherein the small-sized ash inlet closes a bent portion formed by bending one of the connecting portions of the fuse terminal.

4. A connector according to any one of claims 1 to 3, wherein the insulative housing comprises a first insulative housing and a second insulative housing, wherein the first insulative housing and the second insulative housing are coupled by a lock ring High voltage fuse.

The high voltage fuse according to claim 4, wherein a tubular sleeve is provided in the inner space of the insulating housing.