KR20190023623A - Fuse and assembly having the same - Google Patents

Abstract

The present invention relates to a fuse and an assembly mounted therewith. The fuse (40) has a leg (44) protruding to the outside of a fuse body (42). The contact part (46) is formed of a rough shape in the leg (44). The contact part (46) is electrically coupled to a pattern of a substrate (30). The substrate (30) electrically connected to the fuse (40) is disposed between first and second bodies (10, 20). An insertion through-hole (32) and a connection through-hole (34) are formed in the substrate (30). The contact part (46) of the leg (44) is positioned and electrically connected to the connection through-hole (34). A protrusion stand (24) inserted into the insertion through-hole (32) is positioned in the second body (20), and a guide channel (26) for guiding a front end of the leg (44) extends to the protrusion stand (24). A front end side of the leg (44) guided to the guide channel (26) is deformed in a predetermined shape, and is electrically connected to the substrate (30). According to the present invention, even if the fuse (40) is replaced by several times, a damage to a portion electrically connected to the leg (44) does not occur.

Description

Fuse and assembly having the same < RTI ID = 0.0 >

The present invention relates to an assembly to which a fuse and a fuse are mounted, and more particularly to an assembly in which a fuse and a fuse are mounted on which the legs of the fuse are guided and bent along the through holes of the printed circuit board when mounted.

If electricity is used, always use a fuse to protect the product. The fuse is installed between the power source and the load so that when the load is overloaded, the fused portion is melted and broken so that no further power is supplied to the load.

Such a fuse is used, for example, in a number of places such as a junction box, as can be seen in FIG. 1 of Registration Practice No. 20-0419493 of the following prior art documents. The fuse is typically electrically connected to a fork terminal whose legs are mounted on a printed circuit board. At least two legs of the fuse are used, and the legs have a problem of a small electrical contact area and a small contact area with the fork terminal. Such a problem has a problem that a lot of heat is generated at the contact point between the fork terminal and the leg, and the heat is damaged in the related parts by the heat.

In addition, a gap between the legs of the fork terminal may be increased due to the attachment / detachment of the fuse several times, so that electrical contact may not be established properly. If the fork terminal is permanently deformed, the entire substrate on which the fork terminal is used is discarded.

Korean Utility Model Registration No. 20-0419493 Japanese Laid-Open Patent Publication No. 2012-222132

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and it is an object of the present invention to ensure the electrical connection with the substrate even if the fuse is repeatedly replaced.

Another object of the present invention is to maximize the electrical contact area between the substrate and the fuse.

According to an aspect of the present invention, there is provided an assembly for mounting a fuse including a leg protruding outwardly from a fuse body, the assembly including: A second body formed to face the first body to form a predetermined space between the first body and a guide portion for guiding the legs of the fuse; And a substrate located in a space between the second bodies and having a connection hole in which the legs of the fuse are contacted.

The mounting portion is recessed on the surface of the first body and includes a seating space in which the fuse body is positioned and a support hole through which the leg passes.

The guide portion has a protruding bar located in the insertion hole formed in the substrate, and a guide channel guiding the leading end of the leg to guide the protruding bar into contact with the pattern on the inner surface of the insertion barrel.

The guide channel has a predetermined radius of curvature to guide the tip of the leg to generate elasticity and plastic deformation.

The support hole is formed at a position corresponding to the connection hole of the substrate, and the connection hole corresponds to the start position of the guide channel.

A guide slope is formed around the opening of the support hole to guide the tip of the leg into the support hole.

According to another aspect of the present invention, there is provided a fuse assembly including a fuse body, a leg protruding to the outside of the fuse body, a fusing end connected to the fuse body and positioned inside the fuse body, And a contact portion in contact with a pattern on the inner surface of the connection hole of the substrate, wherein the leg is subjected to a predetermined elastic deformation and plastic deformation when the leg is mounted on the mounting portion.

The contact portion is formed in a concavo-convex shape.

The legs are wire-shaped.

The tip of the leg and the contact portion are deformed to have a predetermined radius of curvature when the fuse is mounted on the mounting portion.

The following effects can be obtained in the assembly in which the fuse and the fuse according to the present invention are mounted.

In the present invention, the legs of the fuse are bent in the process of mounting the legs on the assembly and are in contact with the substrate at various places. The legs of the fuse are brought into direct contact with the pattern of the substrate, The formed pattern is not damaged, so that the electrical contact between the substrate and the fuse can be reliably obtained.

In the present invention, the legs of the fuse penetrate through the substrate and are electrically contacted with the substrate. At the same time, the ends of the legs are bent to contact the inner surface of the insertion hole formed in the substrate, so that the electrical contact area between the substrate and the fuse is relatively widened .

1 is a perspective view showing a preferred embodiment of an assembly in which a fuse and a fuse according to the present invention are mounted.
2 is an exploded perspective view showing the configuration of the embodiment shown in Fig.
3 is a sectional view showing the configuration of the embodiment shown in Fig.
4 is a working state view showing a state in which a fuse is started to be mounted on a mounting portion in the embodiment of the present invention.
Figure 5 is a working state view showing that the legs of the fuse in the embodiment of the present invention are guided and bent in the guide channel.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

The assembly with the fuse according to the present invention may be, for example, an automotive junction block. In the drawings of the present specification, only some configurations are shown for convenience of illustration.

The first body 10 constitutes a part of the appearance of the junction block. The first body 10 may be a main body or a cover of the junction block. A plurality of mounting portions 12 are formed to be exposed to the outer surface of the first body 10. Although five mounting portions 12 are formed in this embodiment, the number of the mounting portions 12 depends on the design specifications of the junction block. The mounting part (12) has a seating space (14). The seating space 14 is recessed in the surface of the first body 10. In the seating space 14, a fuse body 42 of the fuse 40, which will be described below, is located. The seating space 14 is formed in a groove shape, but not necessarily, and the seating space 14 may be formed through the first body 10.

Supporting holes 16 are formed adjacent to both sides of the seating space 14. The support hole 16 is a portion through which the leg of the fuse 40 passes. The support through hole 16 may be formed in the seating space 14 depending on the shape of the fuse 40. In this case, . A guide slope 18 is formed to surround the entrance edge of the support through-hole 16. The guide slope 18 guides the leading end of the leg 44 of the fuse 40 so as to smoothly enter the support through-hole 16.

And a second body (20) facing the first body (10). The second body 20 may be coupled to the first body 10 through a mechanical structure. A predetermined space is provided between the first body 10 and the second body 20. In the space, the substrate 30 or the like to be described below is located. The second body 20 may be an isolation plate or a main body of a junction block. The second body (20) has a guide portion (22) at a position corresponding to the mounting portion (12). The guide portion 22 serves to guide the legs 44 of the fuse 40.

The guide portion 22 is provided with a protrusion 24. The protrusion 24 protrudes from one surface of the second body 20. The protrusion 24 is a portion to be inserted into the insertion hole 32 of the substrate 30 to be described below. At both ends of the protrusion 24, there is a guide channel 26 starting from a position corresponding to the support hole 16 of the first body 10. The guide channel 26 is a curve having a predetermined radius of curvature. The guide channel 26 extends from the surface of the second body 20 adjacent to the protrusion 24 to the side of the protrusion 24.

The substrate 30 is a part where various components are mounted. In this embodiment, the substrate 30 is positioned between the first body 10 and the second body 20. The substrate 30 has an insertion hole 32 into which the protrusion 24 is inserted. A pattern is exposed on the inner surface of the insertion hole 32 to enable electrical contact with the leg 44 of the fuse 40.

The substrate 30 has a connection hole 34 adjacent to the insertion hole 32. The connection through-hole 34 is located at a position corresponding to the starting point of the support through-hole 16 and the guide channel 26. A pattern is also exposed on the inner surface of the connection through hole 34, so that electrical contact with the leg 44 of the fuse 40 is possible.

On the other hand, the fuse 40 is formed by protruding the legs 44 to both sides of the fuse body 42 made of an insulating material. (Not shown) in the fuse body 42 to connect the legs 44 to each other. The fusing part melts and breaks when an overload is applied to prevent further energization. The legs 44 are made of a conductive metal. In this embodiment, the legs 44 are in the form of a wire. The legs 44 are capable of both elastic deformation and plastic deformation to some extent.

A contact portion 46 is provided at an intermediate portion of the leg 44. The contact portion 46 is located in the connection hole 34. The contact portion 46 has a concavo-convex shape so that the portion protruding from the concavo-convex portion is in contact with the inner surface of the connection through-hole 34.

The legs 44 of the fuse 40 are entirely straight when the fuse 40 is not mounted on the mounting portion 12. The leg 44 is bent to have a predetermined radius of curvature while being guided by the guide channel 26 through the support through-hole 16 and the connection hole 34. The distal end of the leg 44 may be guided along the guide channel 26 so that the tip of the leg 44 contacts the pattern exposed on the inner surface of the insertion hole 32. This can be seen in FIG.

Hereinafter, the assembling and use of the assembly in which the fuse and the fuse are installed will be described in detail.

In the present invention, the substrate 30 is positioned between the first body 10 and the second body 20. The projection 24 of the second body 20 is inserted into the insertion hole 32 of the substrate 30. Such a state is shown in Fig. 4 and Fig. 5 in cross section.

The legs 44 of the fuse 40 are extended in a straight line on both sides in a state where they are not mounted on the mounting portion 12. [ Such a state can be seen in FIG. 2 and FIG. The legs 44 are inserted into the support holes 16 of the mounting portion 12. When the leg 44 is inserted into the support hole 16, the guide slope 18 guides the leg 44 to the support hole 16 easily.

The tip end of the leg 44 is guided to the guide channel 26 of the second body 20 when passing through the support hole 16 and the connection hole 34 of the substrate 30. Since the guide channel 26 has a predetermined radius of curvature, the guide channel 26 guides the tip of the leg 44 and bends the tip of the leg 44 and the contact portion 46. That is, by the force of the operator inserting the fuse body 42 of the fuse 40 into the seating space 14 of the mounting portion 12, the tip of the leg 44 is guided along the guide channel 26 The tip end of the leg 44 and the contact portion 46 are bent. 5 shows a state in which the tip of the leg 44 starts to be guided along the guide channel 26. As shown in Fig.

The contact portion 46 of the leg 44 is inserted into the contact hole 34 of the substrate 30 and is in contact with the pattern on the inner surface of the contact hole 34. The contact portion 46 has a concavo-convex shape so that a relatively protruding portion is brought into contact with a pattern on the inner surface of the contact hole 34 to establish an electrical connection.

On the other hand, the tip of the leg 44 is guided along the guide channel 26 and finally comes into contact with the pattern exposed on the inner surface of the insertion hole 32. Therefore, the pattern of the insertion hole 32 and the tip of the leg 44 are in contact with each other, so that the electrical connection is established. Such a state can be confirmed in FIG.

When the fuse 40 is completely mounted on the mounting portion 12, the fuse body 42 partially protrudes as shown in FIG. This is to allow the operator to take the fuse body 42 out of the seating space 14.

The fuse 40 melts and breaks during use to prevent overloading. When the fuse 40 is used, it is necessary to replace the fuse 40. At this time, an upper end of the fuse body 42 protruding from the surface of the first body 10 may be held by a hand or a tool and applied with a force. When the fuse body 42 comes out of the seating space 14, the distal end of the leg 44 extends from the guide channel 26 to the contact hole 46, (16). In this process, the deformation can be restored from the tip end of the leg 44 to the contact portion 46 in a substantially original state.

While the present invention has been described in connection with what is presently considered to be the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: first body 12:
14: seating space 16: through hole
18: guide slope 20: second body
22: insertion hole 24:
26: guide channel 30: substrate
32: insertion hole 34: connection hole
40: fuse 42: fuse body
44: Leg 46:

Claims (10)

An assembly for mounting a fuse having a leg formed to protrude outward from a fuse body,
A first body having a mounting portion on which the fuse is mounted so as to be exposed to a surface;
A second body which is installed to face the first body and forms a predetermined space with the first body and has a guide portion for guiding the legs of the fuse,
And a substrate having a connection hole located in a space between the first body and the second body and in contact with the legs of the fuse.
2. The assembly of claim 1, wherein the mounting portion is recessed on a surface of the first body, wherein a fuse including a seating space in which the fuse body is located and a support hole through which the leg passes is mounted.
[3] The apparatus according to claim 2, wherein the guide portion includes a protruding bar located in the insertion hole formed in the substrate, and a guide channel guiding the leading end of the leg and guiding the guide bar in contact with the pattern on the inner surface of the insertion barrel ≪ / RTI >
4. The assembly of claim 3, wherein the guide channel is mounted with a fuse having a predetermined radius of curvature to guide the tip of the leg to generate elasticity and plastic deformation.
5. The assembly according to claim 4, wherein the support hole is formed at a position coinciding with a connection hole of the substrate, and the connection hole is mounted with a fuse corresponding to a start position of the guide channel.
6. The assembly according to any one of claims 2 to 5, wherein a guide slope is formed around the opening of the support aperture to mount a fuse for guiding the tip of the leg into the support aperture.
A fuse body,
A leg protruding outside the fuse body,
A fusing part connected between the legs and positioned inside the fuse body,
And a contact portion formed at one side of the leg and in contact with a pattern on the inner surface of the connection hole of the substrate,
Wherein the legs have a predetermined elastic deformation and plastic deformation when mounted on the mounting portion.
8. The fuse according to claim 7, wherein the contact portion is formed in a concavo-convex shape.
9. The fuse of claim 8, wherein the legs are wire-shaped.
10. The fuse according to any one of claims 7 to 9, wherein a distance between a tip of the leg and the contact portion is deformed to have a predetermined radius of curvature when the fuse is mounted on the mounting portion.

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