KR20120017372A

KR20120017372A - Multi fuse

Info

Publication number: KR20120017372A
Application number: KR1020100080037A
Authority: KR
Inventors: 김자민
Original assignee: 한국단자공업 주식회사
Priority date: 2010-08-18
Filing date: 2010-08-18
Publication date: 2012-02-28

Abstract

The present invention relates to multifuse. In the multi-fuse 10 of the present invention, the fuse body 11 forms an appearance and a skeleton. An inner space is formed inside the fuse body 11, and the inner space communicates with the lower portion of the fuse body 11 through a communication slit. The inner space is opened to the upper portion of the fuse body 110 to form a confirmation window 12. A cover 14 of transparent or translucent material is installed to shield the confirmation window 12. The fuse body 11 A connecting terminal 16 is connected to the power source so as to protrude to the outside of one side thereof, and the connecting legs 20 are disposed to protrude out of the fuse body 11 through the communication slit. The bus bar 22 is installed in the fuse body 11 so as to face a part of the connecting leg 20, and the upper end of the connecting leg 20 is connected to each other. A melting end 24 is installed at a position corresponding to the confirmation window 12 corresponding to the upper end of the bus bar 22. The melting end 24 is melted and broken when the component is overloaded. The melted portion 24 is connected to the bus bar 22 through a first connecting portion 26. The connecting leg 20 is connected to the connecting leg 20 through the second connecting part 28. According to the present invention having the above configuration, the melting part 24 is formed in the confirmation window 12 which is formed to open to the upper portion of the fuse body 11. Since it is in the corresponding position, the operator can easily check the state of the melted portion (24).

Description

Multi fuse

The present invention relates to a multi-fuse, and more particularly to a multi-fuse to be able to check the state of the melt portion on the upper surface of the fuse body.

There are many different electronics that use power in a vehicle. For example, there are a motor, a spark plug, and the like. These electronics require power for their operation. These electronics are supplied from a battery or generator through a fuse box.

The fuse box is provided with a fuse that prevents an overcurrent from flowing through the respective electrical appliances. Therefore, while the electric power is supplied to each electric appliance through the fuse, when the overcurrent flows, the fuse is blown to cut off the power supply to the electric appliance.

1 is a front view showing the configuration of a multifuse according to the prior art. According to this, the multi-fuse 1 supplies power to a plurality of electrical appliances, and serves to prevent overcurrent from flowing to each of the electrical appliances. The multi-fuse 1 mainly supplies power to the electrical appliances used basically, and supplies power to the electrical appliances requiring large currents. The multifuse 1 actually plays the same role as combining a plurality of fuses. The fuse body 3 forms a skeleton of the multi-fuse 1. The fuse body 3 is substantially flat and hexahedral in one direction. The fuse body 3 is provided with a bus bar and a blown part (not shown) to cut off the power connection when an overcurrent flows to each electric device. The melted portion may check its state through the transparent window 4 formed on the side surface of the fuse body 3.

In the fuse body 3, a plurality of connection legs 5 protrude outwardly and extend. The connecting legs 5 are electrically connected to the respective electrical appliances. To this end, the connection leg 5 may be coupled to the connector and the like connected to each electrical appliance. The multifuse 1 shown in the figure has a total of nine connecting legs 5.

Both ends of the fuse body 3 are provided with first and second connection terminals 7 and 7 '. Fastening holes (not shown) are drilled in the connection terminals 7 and 7 ', respectively. The connection terminals 7 and 7 'are for connection with a power source. For example, the first connection terminal 7 is connected to the generator, the second connection terminal 7 'is connected to the battery.

However, the multi-fuse according to the prior art having the configuration as described above has the following problems.

In the multi-fuse 1 according to the prior art, a blowout part is provided inside the fuse body 3, and a transparent window 4 for checking the state of the blowout part is provided on the side of the fuse body 3, When (1) is installed in a box, the operator cannot confirm the transparent window 4. Therefore, the multi-fuse (1) must be separated from the box there is a hassle to check the state of the melt through the transparent window (4).

Accordingly, an object of the present invention is to solve the conventional problems as described above, and to provide a multi-fuse capable of checking the state of the melt portion provided therein while being mounted in the box.

According to a feature of the present invention for achieving the above object, the present invention communicates with the outside through a communication slit formed in the lower inner space of the fuse body and the upper side of the fuse body, the fuse body of the A transparent or translucent cover coupled to the confirmation window of the fuse body to shield the confirmation window, a connection terminal exposed to one side of the fuse body and connected to an external power source, and protrudes to the outside of the fuse body through the communication slit; A connection leg disposed to distribute power to each component, a bus bar connected to the connection terminal and positioned to face a portion of the connection leg in an internal space of the fuse body, and the bus bar and the connection leg respectively to a first portion. And connected through a second connection portion is installed in a position corresponding to the confirmation window of the fuse body and melted and broken when the part is overloaded It is configured to include an end.

The melted end is connected to the bus bar and the connecting leg by the first connecting part and the second connecting part at a position corresponding to the upper portion of the bus bar and each connecting leg.

The length of the first connecting portion and the second connecting portion is designed differently depending on the component to which the connecting leg is connected.

The fuse body has a flat hexahedron shape so that the confirmation window is opened upward.

The melt part is disposed at a position protruding from the confirmation window of the fuse body, and the cover has a hexahedron shape in which a lower portion coupled to the check window of the fuse body is opened to surround the fuse part.

The melted portion is disposed in an inner space corresponding to the confirmation window of the fuse body, and the cover has a plate shape in which an edge thereof is coupled to the fuse body so as to shield the confirmation window.

In the multifuse according to the present invention, the following effects can be obtained.

That is, in the present invention, since a confirmation window is formed on the fuse body of the multi-fuse, and the blow-out part is located inside the fuse body adjacent to the check window, the operator can check the state of the blow-out part with the multi-fuse installed in the box. There is an effect that the convenience is increased.

1 is a front view showing the configuration of a multi-fuse according to the prior art.
Figure 2 is a perspective view showing the configuration of a preferred embodiment of the multi-fuse according to the present invention.
Figure 3 is a perspective view showing the main portion of the embodiment of the present invention.
Figure 4 is a perspective view showing a state in which the multi-fuse of the embodiment of the present invention is installed in the box.

Hereinafter, exemplary embodiments of the multifuse according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the drawings, the fuse body 11 forms the appearance and skeleton of the multi-fuse 10 of the present invention. The fuse body 11 is substantially flat and has a long hexahedron shape, and a predetermined internal space (not shown) is formed therein. The inner space has a communication slit (not shown) formed to communicate with the lower portion of the fuse body 11 so that the connection leg 20 to be described below penetrates.

The inner space is formed to be opened to the upper portion of the fuse body 11, that is, the entrance of the inner space forms a confirmation window 12. A cover 14 is installed in the confirmation window 12. The cover 14 is preferably made of a transparent or translucent material. The cover 14 has a substantially hexahedral shape with an inner space formed therein and opened downward in this embodiment. The cover 14 is coupled to the confirmation window 12 of the fuse body 11 to cooperate with the fuse body 11 to shield the internal space of the fuse body 11 from the outside. Since the cover 14 is made of a transparent or translucent material, the operator can easily check the internal space of the fuse body 11.

A connection terminal 16 is provided to protrude to one side of the fuse body 11. The connection terminal 16 is made of a conductive material and is electrically connected to a power source. In order to connect the connection terminal 16 with a power source, a connection hole 18 is formed in the connection terminal 16.

A connection leg 20 protrudes from the lower portion of the fuse body 11 through the communication slit. The connecting leg 20 is electrically connected to a terminal provided in the box body 30 to be described below. The connecting legs 20 are protruded into the lower portion of the fuse body 11, the connecting legs 20 serve to supply power to the respective loads. The plurality of connecting legs 20 are arranged side by side.

As shown in FIG. 3, the bus bar 22 is connected to the connection terminal 16. The bus bar 22 is made of the same material as the connection terminal 16 and is integral with the connection terminal 16. The bus bar 22 extends along an inner surface of one side of the inner space of the fuse body 11. Here, the bus bar 22 is a long rectangular plate shape, one side of the bus bar 22 is disposed facing the connecting legs 20. Of course, the connection leg 20 extends further downward than the lower end of the bus bar 22. This is because the bus bar 22 is located inside the fuse body 11 and the connection leg 20 protrudes below the fuse body 11.

A melting part 24 is provided to be connected to the bus bar 22 and the respective connecting legs 20. The melted portion 24 is provided at a position corresponding to an upper end of the bus bar 22 and an upper end of the connection leg 20. Thus, the blown part 24 is in a position corresponding to the confirmation window 12 of the fuse body 11.

The melted portion 24 is connected through the bus bar 22, the connecting leg 20, the first connecting portion 26, and the second connecting portion 28. That is, the bus bar 22 and the melted portion 24 are connected by the first connecting portion 26, and the melted portion 24 and the connecting leg 20 are connected to each other by the second connecting portion 28. do. Here, the lengths of the first connecting portion 26 and the second connecting portion 28 are formed differently. This is to change the conditions under which the respective melted portions 24 are melted and broken. In the present embodiment, a zigzag shape is used to change the lengths of the first and second connection parts 26 and 28. The melted portion 24 is melted and broken when the electrical component is overloaded, and serves to prevent power supply to the electrical component.

In the figure, reference numeral 30 is a box body, and 32 is a relay installed in the box body 30.

It will be described below that the multi-fuse according to the present invention having the configuration as described above is used.

The multi-fuse 10 receives power from one power source and distributes power to each component through a plurality of connection legs 20. To this end, the multi-fuse 10 is installed on one side of the box body (30). In this case, each of the connection legs 20 are electrically connected to the mating terminals of the box body 30, respectively.

After the multi-fuse 10 is installed on the box body 30, a terminal (not shown) is connected to the connection terminal 16. The terminal, for example, is connected to the battery side and serves to transfer power. The terminals are seated on the connection terminal 16 and are coupled to each other by fastening nuts to bolts passing through the fastening holes 18.

In this state, when power is supplied to the connection terminal 16 through the terminal, power is supplied from the connection terminal 16 to the bus bar 22. In the bus bar 22, power is distributed and supplied to each of the melted portions 24 through each of the first connectors 26. Power delivered to the melted portion 24 is transferred to the respective connecting legs 20 through the second connecting portion 28. Power delivered to the connection leg 20 is supplied to each component through a terminal installed in the box body 30.

In the process of supplying power and using a component as described above, the component may be overloaded. In this case, the melted portion 24 is melted while being overheated, and the melted portion 24 is cut off. In this case, power is no longer supplied to the parts that were supplied with power through the melted melted cutout part 24.

On the other hand, the operator will check the state of the plurality of melted portions 24 when necessary. In other words, as shown in Figure 4 in the state in which the multi-fuse 10 is installed on the box body 30 through the cover 14 of the transparent or translucent material 14, the melted portion in the position adjacent to the cover 14 The state of (24) can be confirmed.

As described above, the state of the melted portion 24 in the state in which the multi-fuse 10 is installed in the box body 30 may include a confirmation window 12 formed on an upper end of the box body 30, and the confirmation window. The bus bar 22 and the connecting leg 20 are disposed to face each other at a predetermined interval so that the melted portion 24 is located at a position corresponding to the position of 12, and the connecting leg 20 and the bus bar 22 are separated from each other. This is because the melted portion 24 is placed at a position between the upper ends.

That is, the first connecting portion 26 is connected to both ends of the melted portion 24 so that the melted portion 24 is positioned at a position corresponding to an upper portion of each of the bus bar 22 and the connecting leg 20. This is because the second connecting portion 28 is connected to the bus bar 22 and the connecting leg 20.

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

For example, the positions of the bus bar 22 and the connecting leg 20 may be reversed. In this case, the connection terminal 16 connected with the bus bar 22 is moved to the rear in the drawing relative to that of the embodiment shown in the fuse body 11.

In addition, the shape of the cover 14 may be plate-like, and the edge thereof may be coupled to the confirmation window 12 of the fuse body 11. In this case, the melted portion 24 may be positioned inside the internal space of the fuse body 11. In the embodiment shown for reference, the blown portion 24 is in a position outside the internal space of the fuse body (11). Of course, in the same structure as the illustrated embodiment, the blown portion 24 may be positioned in the internal space of the fuse body 11. However, in such a case, it becomes relatively difficult to check the state of the melted portion 24.

10: Multi-fuse 11: fuse body
12: confirmation window 14: cover
16: connector 18: fastener
20: connecting leg 22: busbar
24: melt part 26: first connection part
28: second connection portion 30: the box body
32: relay

Claims

A fuse body which communicates with the outside through a communication slit formed at the bottom of the inner space and a confirmation window is formed at the top thereof;
A transparent or translucent cover coupled to the confirmation window of the fuse body to shield the confirmation window of the fuse body;
A connection terminal exposed to the outside of one side of the fuse body and connected to an external power source;
A connection leg which protrudes outward from the fuse body through the communication slit and distributes power to each component;
A bus bar connected to the connection terminal and positioned to face a portion of the connection leg in an inner space of the fuse body;
The bus bar and the connecting leg and the first and second connecting portions, respectively, are installed in a position corresponding to the confirmation window of the fuse body and comprises a melted portion that is melted and broken when the component is overloaded Multifuse.

The multi-fuse of claim 1, wherein the melted portion is connected to the bus bar and the connecting leg by the first connecting portion and the second connecting portion at a position corresponding to the upper portion of each of the bus bars and the connecting legs.

The multifuse according to claim 2, wherein the length of the first connection part and the second connection part is designed differently according to the part to which the connection leg is connected.

The multi-fuse according to any one of claims 1 to 3, wherein the fuse body has a flat hexahedron shape and the confirmation window is opened upward.

The method of claim 4, wherein the melted portion is disposed in a position protruding from the confirmation window of the fuse body and the cover is characterized in that the lower part is coupled to the confirmation window of the fuse body to surround the melted body is an open hexahedral shape Multifuse.

The multi-fuse according to claim 4, wherein the blow-out portion is disposed in an inner space corresponding to the confirmation window of the fuse body, and the cover has a plate shape having an edge thereof coupled to the fuse body to shield the confirmation window. .