KR20140083829A - Fuse - Google Patents

Abstract

The present invention relates to a fuse. The housing 20 forms the appearance of the fuse of the present invention. An inner space 22 is formed in the housing 20, and the inner space 22 is defined by a partition plate 24. A fusing end 36 of the bus bar 30 is located in the inner space 22. The power supply terminal 32 and the load terminals 34 and 34 'are connected to each other with respect to the free end portion 36. The bus bar 30 is made of a conductive metal. The power terminal 32 and the load terminal 34 and 34 'protrude to the outside of the housing 20. The inner space 22 is shielded by a cover 40 made of a transparent or translucent material. The cover (40) is provided with an enlarged portion (46) at a position corresponding to the free end (36). The enlarged portion 46 is formed integrally with the cover 40 in a convex lens shape so that the user can easily grasp the state of the fusing portion 36 with accuracy.

Description

Fuse {Fuse}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse, and more particularly, to a fuse having an enlarged portion so that the state of a fuse inside the fuse can be easily recognized from the outside.

The fuse is used to supply electric power from an electric source such as a battery to an electrical component, thereby quickly shutting off the power supply to the electrical component when the electrical component is overloaded.

1 is a front view of a prior art fuse. The fuse shown in FIG. 1 is a multi-fuse having a plurality of fusing parts and used in connection with a plurality of electric parts.

The multi-fuse 1 supplies power to a plurality of electric components, which prevent an overcurrent from flowing in each of the electric components. The multi-fuse 1 actually has the same function as a combination of a plurality of fuses. The housing 3 forms the skeleton of the multi-fuse 1 as described above. The housing 3 is substantially flat and has a hexahedron shape that is long in one direction. The housing 3 is provided with a structure for interrupting power connection when an overcurrent flows through the electric component.

A bus bar 5 is provided inside the housing 3. An input terminal 7 is provided on one side of the bus bar 5 so as to be exposed to the outside of the housing 3, A plurality of output terminals 9 are provided on the other side of the housing 3 so as to be exposed to the outside of the housing 3.

On the other hand, the bus bar 5 between the output terminal 9 and the input terminal 7 is provided with a free end 11. The free ends 11 are connected to the respective output terminals 9. The free end 11 is provided with a transparent or translucent cover 13 on the outer surface of the housing 3 so as to be viewed from the outside. The state of the fusing end portion 11 can be confirmed through the cover 13.

However, in recent years, all products tend to be thinner and shorter, so the fuse is also becoming smaller. As the fuse is miniaturized as described above, it is very difficult to check the state of the fusing end portion 11 through the cover 13.

Therefore, it is difficult to actually confirm whether the fusing end portion 11 is melted and broken, and in the case of the multi-fuse 1, it is difficult to confirm which fusing end portion 11 has melted.

Korea Patent Publication No. 10-2011-0107169 Korean Patent Publication No. 10-2011-0076581

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above and to make it possible to more easily confirm the state of the fusing part from the outside.

Another object of the present invention is to prevent an enlarged portion showing an enlarged state of a free end portion from being damaged by an unexpected external force.

According to an aspect of the present invention for achieving the above object, the present invention provides a method of manufacturing a semiconductor device, including a housing having an inner space formed therein, a fusing part positioned in the inner space, A bus bar having a power terminal and a load terminal, a cover for shielding an inner space of the housing, and an enlargement unit formed at a position corresponding to the free end of the cover to enlarge a free end of the inner space.

The enlarged portion is formed integrally with the cover in the shape of a convex lens to enlarge the fusing portion.

The enlarged portion is formed inside the cover groove formed on the surface of the cover.

The cover may be formed of at least the transparent portion or the translucent material.

And a protective fence formed integrally with the cover surrounding the periphery of the enlarged portion.

And the enlarged portion is formed on at least one surface of the cover among the positions corresponding to the respective fringing ends.

An inner space formed inside the housing is defined by a partition plate such that the free ends are in a partitioned space.

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

First, in the present invention, an enlarged portion is provided on a cover of a fuse so that a user can easily and accurately check the state of a fusing portion inside through a cover, thereby enhancing user convenience.

In the present invention, since the enlarged portion provided on the cover of the fuse is formed in the groove formed in the outer surface of the cover so as to minimize the degree of protrusion of the enlarged portion to the outer surface of the fuse, unexpected external force acts on the enlarged portion, So that it is always easy and accurate to check the state of the fusing portion through the enlarged portion.

Further, since the protection fence is formed by surrounding the enlarged portion provided on the cover of the fuse according to the present invention, it is possible to prevent the surface of the enlarged portion from being damaged due to the external external force acting on the enlarged portion, It has the effect of being easy and accurate.

1 is a front view showing a configuration of a general multi-fuse;
2 is a perspective view showing a configuration of a preferred embodiment of a fuse according to the present invention.
3 is an exploded perspective view showing the configuration of the embodiment shown in Fig.
4 is a cross-sectional perspective view showing the configuration of the embodiment shown in Fig.
5 is a perspective view showing a configuration of another embodiment of the present invention.
6 is a cross-sectional perspective view showing the configuration of the embodiment shown in Fig.
7 is a perspective view showing the configuration of another embodiment of the present invention.
8 is a cross-sectional perspective view showing the configuration of the embodiment shown in Fig.

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

As shown in Fig. 2 to Fig. 4, the housing 20 forms an outer appearance of the fuse. The housing 20 has a flat hexahedral shape in this embodiment. An inner space 22 is formed in the housing 20, and the inner space 22 is formed in a part of the housing 20. Of course, the inner space 22 may be formed throughout the housing 20. For reference, in the present embodiment, the inner space 22 is formed to be opened to the front surface and the back surface of the housing 20. Here, the front surface and the rear surface of the housing 20 refer to two surfaces having a relatively large area in the housing 20. Of course, in the present embodiment, the inner space 22 is also opened on the upper surface connecting the front surface and the rear surface of the housing 20.

The inner space 22 is divided into two by the partition plate 24 in this embodiment. The partitioning of the internal space 22 depends on the number of the fins 36 described below. The inner space 22 is partitioned by the number corresponding to the number of the free ends 36. In this embodiment, the partition plate 24 is extended in the left-right direction with reference to the drawing, but the partition plate 24 may be partitioned in the vertical direction according to design conditions. The extending direction of the partition plate 24 depends on the shape of the housing 20 and the design conditions thereof.

A hooking jaw 26 is formed on one side of the housing 20. The hooking jaws 26 are formed on the front surface and the rear surface of the housing 20, respectively, in this embodiment. The hooking jaw 26 is for fastening the cover 40 to be described below. However, it is possible to fasten the cover 40 to the housing 20 without using the hooking jaws 26.

A plurality of protruding ribs 28 protrude from the outer surface of the housing 20. A plurality of protruding ribs 28 are formed on the outer surface of the housing 20. The protruding ribs 28 are for discharging heat generated inside the housing 20 to the outside, and a plurality of protruding ribs 28 are formed in order to widen the surface area of the housing 20. Of course, the projecting ribs 28 do not necessarily have to be formed on the outer surface of the housing 20.

A bus bar (30) is installed in the housing (20). The bus bar 30 is made of a conductive material. The bus bar 30 may be formed integrally with the housing 20 in advance when the housing 20 is injection-molded. That is, the bus bar 30 is integrated with the housing 20 by the insert injection method.

The bus bar 30 has a power supply terminal 32 connected to the power supply side. The power supply terminal 32 is coupled to a power supply terminal (not shown) protruding outside the housing 20 and extending from the power supply side. The power terminal 32 is formed with a fastening hole (not shown).

The bus bar 30 is also provided with first and second load terminals 34, 34 '. The first and second load terminals 34 and 34 'protrude to the outside of the housing 20, respectively, and are respectively coupled to load connecting terminals (not shown) extended from the load side.

The power terminal 32 and the load terminals 34 and 34 'are connected to each other by a fusing part 36. Of course, since resistance varies depending on the length and shape of the portion connecting the power supply terminal 32 and the load terminals 34 and 34 ', the resistance portion is separately called the resistance formation portion. And therefore, the concrete city and the designation of the reference numeral are omitted. That is, the power terminal 32 and the load terminal 34, 34 'are considered to be connected by the terminal end portion 36. The width and the thickness of the free end portion 36 are determined so that they can be melted and broken when an overload is applied to the electric component, and the surface of the free end portion 36 may be provided with a low melting point metal.

In the present embodiment, the power terminal 32 and the first load terminal 34 are formed in the same shape and extend in parallel with each other. However, the first load terminal 34 and the second load terminal 34 'may extend in parallel with each other. The number of the load terminals 34, 34 'may be varied. For example, as shown in the prior art drawings, a plurality of load terminals 34 and 34 'may be arranged side by side.

The cover (40) shields the inner space (22) of the housing (20) so as to be partitioned from the outside. The cover 40 is made of a transparent or translucent material. The cover 40 is configured to cover all open portions of the inner space 22 of the housing 20 in this embodiment. To this end, the cover body 42 forming the skeleton of the cover 40 has a "C" shape as shown in the figure. The cover (40) is provided with a hook (44) which is hooked on the hook (26) of the housing (20). The hooking piece 44 is formed with a hook hole 45 into which the hooking jaw 26 is inserted.

An enlarged portion 46 is provided at a position corresponding to the free end 36 of the cover body 42. The enlarged portion 46 is integrally formed with the cover body 42 and has the same structure as the convex lens so that the fused portion 36 in the inner space 22 is enlarged and viewed externally. Therefore, the enlarged portion 46 is convexly protruded on the surface of the cover main body 42.

The enlarged portion 46 may be formed separately from the cover body 42 and attached to the cover body 42. However, in order to reduce the cost, it is preferable that the enlarged portion 46 is formed integrally with the cover main body 42.

Another embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. In the present embodiment, the same reference numerals as in the above-described embodiments are assigned to 100 units and the description will be focused on the main part.

The bus bar 130 is installed in the housing 120 so that the free end portion 136 is positioned in the inner space 122 of the housing 120. [ The cover 140 covers the inner space 122 and an enlarged portion 146 is integrally formed in the cover body 142 of the cover 140. The enlarged portion 146 is formed in a convex lens shape so that the fused portion 136 is enlarged when viewed from the outside.

In this embodiment, the enlarged portion 146 is formed in the cover groove 148 formed on the outer surface of the cover body 142. The cover groove 148 is formed to be recessed in the outer surface of the cover body 142. The enlarged portion 146 is formed in the cover groove 148 so that the enlargement 146 is formed on the outer surface of the cover body 142, The portion 146 is less protruded. That is, even if the enlarged portion 146 does not protrude or protrude from the outer surface of the cover body 142 other than the cover groove 148, the extent of the enlarged portion 146 is minimized. Although the enlarged portion 146 is formed in the cover groove 148 as described above, even if the thickness of the cover body 142 is reduced as a whole, the enlarged portion 146 is formed in the portion corresponding to the free end portion 136, So that the thickness thereof is not thinned. This has the effect of preventing the cover main body 142 from being damaged even if sparking occurs in the fusing end portion 136.

Next, another embodiment of the present invention will be described with reference to Figs. 7 and 8. Fig. Also in this embodiment, the same reference numerals as in the above-described embodiment are assigned to 200 units, and the description will be focused on the main part.

The bus bar 230 is installed on the housing 220 so that the free end portion 236 is positioned in the inner space 222 of the housing 220. [ The inner space 222 is covered by the cover 140 and the cover body 242 of the cover 240 is integrally provided with an enlarged portion 246. The enlarged portion 246 has a convex lens shape so that the fused portion 236 is enlarged when viewed from the outside.

In the present embodiment, the protection fence 250 is formed around the periphery of the enlargement portion 246. [ The protection fence 250 is formed in a round shape since it is formed around the periphery of the enlargement unit 246 in this embodiment. However, if the shape of the enlarged portion 246 is a quadrangular shape, the protective fence 250 also has a rectangular shape. The protection fence 250 serves to prevent an external force from being applied to the enlargement unit 246. The height of the protection fence 250 may be equal to or greater than the maximum protrusion height of the enlarged portion 246.

In the present embodiment, the thickening portion of the cover body 242 becomes wider due to the presence of the protection fence 250 surrounding the enlargement portion 246. For reference, a cover groove 248 is formed on the surface of the cover body 242 in the drawing of this embodiment. Since the cover groove 248 is formed, the degree of protrusion of the enlarged portion 246 and the protection fence 250 is relatively reduced. This also reduces the thickness of the entire fuse. That is, if the enlarged portion 246 and the protection fence 250 protrude without the cover groove 248, the thickness of the fuse becomes thicker before and after the fuse is thickened. In the cover groove 248, The thickness of the fuse 250 can be reduced.

In the embodiments of the present invention, enlarged portions 46, 146 and 246 are formed only on one surface of the cover body 42, 142 and 242, but not necessarily, enlarged portions 46, 146 and 246 may be formed on both surfaces.

Hereinafter, the use of the fuse according to the present invention will be described in detail.

In the embodiment shown in FIGS. 2 to 4, a power supply terminal for supplying power to the power supply terminal 32 is connected, and the first and second load terminals 34 and 34 ' Is connected to the load connection terminal. In this state, a power source supplied through the power terminal 32 is supplied to the load side via each of the load terminals 34 and 34 '

In this state, the state of the free end portion 36 may be checked by passing through the enlarged portion 46 provided in the cover 40. [ Since the enlargement unit 46 allows the fusing unit 36 to be relatively enlarged, the user can see the fusing unit 46 relatively large or in more detail than the user can see through the enlarging unit 46. Thus, the identification of the fusing end 36 can be made easier and more accurate.

When the overcurrent flows to one or both of the load terminals connected to the load terminals 34 and 34 ', the fusing end 36 is melted and broken, and the power supply to the load side is no longer performed. In this case, The fuse can be separated and the state of the fusing part 36 can be checked through the enlarging part 46 to check which load has a problem. Through this process, you can check the status of the problematic load used.

The enlarged portion 46 is formed on the outer surface of the main cover 42 so as to protrude in a convex lens shape. Such a structure serves to reinforce the main cover 42 of the portion where the enlarged portion 46 is formed Thereby preventing the main cover 42 from being damaged by a spark or the like generated in the fusing end 36.

Next, in the embodiment shown in FIGS. 5 and 6, the state of the fusing end portion 136 can be easily and accurately confirmed through the enlarging portion 146 as described above. The enlarged portion 146 is provided in the cover groove 148 formed on the surface of the cover body 142 so that the enlarged portion 146 does not protrude from the outer surface of the cover 140. Therefore, although the enlarged portion 146 is provided on the outer surface of the cover 140, an external force can not easily be applied to the enlarged portion 146, thereby preventing the enlarged portion 146 from being damaged by an external force. Although the cover groove 148 is formed in the cover groove 148 in the present embodiment, the enlarged portion 146 serves as a reinforcing member even if the cover groove 148 is relatively thin.

7 and 8, it is possible to easily and accurately grasp the state of the fusing end portion 236 through the enlarged portion 246, and the enlarged portion 246 can be formed in a state in which the protection fence 250 is adjacent It is possible to prevent the enlarged portion 246 from being damaged by an external force. The protection fence 250 protects the cover body 242 from the influence of sparks generated in the free end portion 236 as well as the enlargement portion 246.

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 cover groove 148 in which the enlarged portion 146 is located is very wide, but not necessarily, and the cover groove 143 is formed in the enlarged portion 146 Or the like. That is, the cover groove 143 may be formed in a circular shape around the enlarged portion 146.

In the illustrated embodiment, the enlargement portions 46, 146, and 246 are circular, but this is not necessarily the case. That is, the shape of the enlarged portions 46, 146, and 246 may be variously formed as a square, a pentagon, and the like.

The shape and number of the power terminals 32, 132 and 232, the shapes and the number of the load terminals 34 and 34 ', the structures of the covers 40, 140 and 240, etc., It can be deformed.

Further, the cover (40, 140, 240) is formed to be transparent or translucent. However, only the portions of the enlargement portions 46, 146, and 246 may be made transparent or translucent, and the remaining portions may be opaque.

In the illustrated embodiment, there is one power supply terminal 32 and two load terminals 34 and 34 ', but the number of the load terminals 34 and 34' can be varied.

In addition, in the embodiments of the present invention, the configuration in any one of the embodiments may be employed in another embodiment, or the configurations in the various embodiments may be combined to form another embodiment.

20: housing 22: inner space
24: partition plate 26: hook jaw
28: protruding rib 30: bus bar
32: power terminal 34: first load terminal
34 ': second load terminal 36:
40: cover 42: cover body
44: Hanger 45: Hanger
46: enlarged portion 120: housing
122: inner space 124: partition plate
126: hook jaw 128: protruding rib
130: bus bar 132: power terminal
134: first load terminal 134 ': second load terminal
136: Far end 140: Cover
142: Cover body 144:
146: Enlargement portion 148: Cover groove
220: housing 222: inner space
224: partition plate 226: hook jaw
228: protruding rib 230: bus bar
232: power terminal 234: first load terminal
234 ': second load terminal 236:
240: cover 242: cover body
244: Hook 245: Hook
246: Magnifying section 248: Cover groove
250: Protective fence

Claims (7)

A housing having an inner space formed therein,
A bus bar having a free end positioned in the inner space and a power terminal and a load terminal connected to both ends of the free end and exposed to the outside of the housing,
A cover for shielding an inner space of the housing,
And a magnifying portion formed at a position corresponding to the fusing portion of the cover to enlarge a fusing portion of the inner space.
The fuse according to claim 1, wherein the enlarged portion is formed integrally with the cover so as to have a convex lens shape, and the fused portion is enlarged.
The fuse according to claim 2, wherein the enlarged portion is formed inside the cover groove formed on the surface of the cover.
The fuse of claim 3, wherein the cover is formed of at least the transparent portion or the translucent material. 5. The fuse according to any one of claims 2 to 4, wherein a protective fence is integrally formed on the cover surrounding the periphery of the enlarged portion.
The fuse according to claim 5, wherein the enlarged portion is formed on at least one surface of the cover among positions corresponding to the respective fringe portions.
The fuse according to claim 6, wherein an inner space formed inside the housing is defined by a partition plate such that the fusing ends are in a partitioned space.

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