KR20080006132U - Fixing structure of a fuse - Google Patents

Abstract

The present invention relates to a fuse fixing structure. The present invention, the bus bar 30 is seated on the seating surface formed in the junction box, the first fastening hole (32 ') is formed to penetrate, protruding from the upper surface to form a protrusion 33; The second fastening hole 42 ′ which is seated on the bus bar 30 and communicates with the first fastening hole 32 ′ is formed to penetrate and is coupled to the bus bar 30 by a fastener. And a fuse 40 formed at a position corresponding to the protruding portion 33 and seated on the bus bar 30 to form an insertion portion 43 into which the protruding portion 33 is inserted. According to the present invention having such a configuration, when the fuse is fastened by the bolt, the fuse is prevented from being broken by the rotational force of the bolt, thereby improving the durability of the fuse, and the fuse and the busbar are temporarily assembled so that the position is fixed. There is an advantage that the fastening using the bolt is easy.

Fuses, Busbars, Junction Boxes, Bolts, Fasteners

Description

Fixing structure of a fuse}

1 is a perspective view showing the configuration of a junction box coupled to a fuse according to the prior art.

Figure 2 is an exploded perspective view showing the configuration of a preferred embodiment of the fuse fixing structure according to the present invention.

Figure 3 is an exploded perspective view showing the main configuration of a preferred embodiment of the fuse fixing structure according to the present invention.

Figure 4 is a main portion of the fuse showing a state in which the fuse constituting the embodiment of the present invention mounted on the bus bar.

Figure 5 is an exploded perspective view showing the main configuration of another embodiment of the fuse fixing structure according to the present invention.

Explanation of symbols on the main parts of the drawings

10: case 20: seating frame

22: first seating surface 23: vertical surface

25: fixing groove 26: the second seating surface

29: coupling groove 30: bus bar

31: body 32: first seat

32 ': First fastening hole 33: protrusion

34: upright part 35: fixing piece

36: second seating portion 38: coupling portion

40: fuse 41: current interruption

42: fixed part 42 ': second fastener

43: insert

The present invention relates to a junction box, and more particularly to a fixing structure of a fuse mounted to the bus bar installed in the junction box of the vehicle.

In general, in order to prevent excessive current from flowing to various electrical components, a fuse that temporarily cuts off a circuit when a current of a predetermined value or more flows and a relay that is operated when an input value reaches a predetermined value to open and close another circuit. It is provided with a junction box accommodated. In addition, a ring terminal is coupled to the wire harness connected to supply power to the junction box and is fixed to the junction box with a bus bar connected thereto.

1 is a perspective view showing a configuration of a junction box in which a fuse according to the prior art is coupled.

As shown in the drawings, the junction box forms a basic skeleton and the upper cover (not shown) and the lower cover (not shown) are respectively coupled to the case 1 and various upper and lower portions of the case 1 on which various components are mounted. It consists of o).

The case 1 is equipped with a bus bar 3. The bus bar 3 serves to distribute the power supplied from the outside to various components. The bus bar 3 is fastened and fixed with a fuse 5 to be described below.

The fuse 5 is mounted on an upper surface of the bus bar 3. The fuse 5 serves to block a circuit instantaneously when a current of a predetermined value or more flows in order to prevent excessive current from flowing into the junction box. The fuse 5 includes a power cutoff part 6 having a thin metal cutoff line (not shown) therein and a fixing part 7 seated on the bus bar 3. The fuse 5 is fastened and fixed to the bus bar 3 by bolts B and nuts (not shown).

However, the above conventional technologies have the following problems.

The busbar 3 is coupled by fasteners such as bolts B and nuts. That is, as shown in Figure 1, to tighten the bolt (B) in the state in which the fuse (5) is seated on the upper surface of the bus bar (3).

In this case, the fuse 5 may be rotated or bent a predetermined angle by the rotational force transmitted in the process of tightening the bolt (B). In this case, the power cut-off part 6 provided inside the fuse 5 is also bent, and the power cut-off part 6 formed of a very thin cut-off line is broken so that the fuse 5 is damaged. have.

In addition, when mounting the fuse (5) to the bus bar (3), after the exact position of the fuse (5) and the bus bar (3), the need to insert the bolt (B) occurs do.

Accordingly, an object of the present invention is to solve the problems as described above, to provide a fuse fixing structure having a protrusion and an insertion portion so that the fuse is not rotated by the rotational force of the bolt.

Another object of the present invention is to allow the busbar and fuse to be assembled to each other.

According to a feature of the present invention for achieving the object as described above, the present invention is seated on the seating surface formed in the junction box, the first fastening hole is formed through, protrudes from the upper surface is formed Bus bars; The protrusion is seated on the bus bar, the second fastening hole communicating with the first fastening hole is coupled to the bus bar by a fastener, and is formed at a position corresponding to the protrusion so that the protrusion is inserted into the bus bar. It is configured to include; a fuse in which the insert is formed.

A current interrupting unit; Fixing parts extending in opposite directions at both ends with respect to the current blocking part, respectively, inserting parts inserted into the protruding portions of the bus bar, and passing through the second fastening hole communicating with the first fastening hole of the bus bar; It is configured to include.

The protruding portion is formed by bending a portion of the bus bar perpendicularly from the bus bar.

The insertion portion is formed by penetrating a portion of the fixing portion so that the protrusion is inserted.

The insertion part is formed by cutting a portion of both ends of the fixing part so as to be fixed between the protrusions.

According to the fuse fixing structure according to the present invention having such a configuration, when the fuse is fastened by the bolt, the fuse is prevented from being broken by the rotational force of the bolt, the durability of the fuse is improved, and the fuse and the busbar are temporarily assembled Since the position is fixed, there is an advantage that the fastening using the bolt is easy.

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

2 is an exploded perspective view showing the configuration of a preferred embodiment of the fuse fixing structure according to the present invention, Figure 3 is an exploded perspective view of the main configuration of a preferred embodiment of the fuse fixing structure according to the present invention, Figure 4 The fuse is constituting the embodiment of the present invention is shown in the main portion of the bus bar.

As shown in these figures, the skeleton of the junction box is formed by the case 10. The case 10 is equipped with various components such as a fuse 40 or a relay (not shown) including the bus bar 30 to be described below. And, although not shown, the upper and lower portions of the case 10 are combined with the upper cover and the lower cover, respectively.

Insertion grooves 12 are formed in the case 10. The insertion groove 12 is a portion in which the body portion 31 of the bus bar 30 to be described below is inserted and fixed. The insertion groove 12 may be formed in various shapes to correspond to the body portion 31.

The case 10 is formed with a seating frame 20. The seating frame 20 is formed on one side of the case 10, the bus bar 30 and the nut (N) to be described below is seated, a plurality of bus bars 30 and a ring terminal (not shown) May be combined.

The seating frame 20 is formed with a first seating surface 22. The first seating surface 22 is a portion on which the first seating portion 32 of the bus bar 30 to be described below is seated, and is configured such that a portion of the center thereof is opened so that the nut N may be exposed. This is to allow the fastening hole 32 ′ formed in the nut N and the first seating portion 32 to be fastened by the fastener through the open portion.

The vertical surface 23 is formed in connection with the first seating surface 22. The vertical surface 23 extends orthogonally to the first seating surface 22 to be in close contact with the upright portion 34 of the bus bar 30 to be described below. Like the first seating surface 22, the vertical surface 23 opens a part of the center so that the nut N may be inserted. In particular, the guide portion 24 is formed to be inclined in the open portion so that the nut (N) can be easily inserted.

As illustrated in FIG. 2, fixing grooves 25 are formed at both sides of the vertical surface 23. The fixing groove 25 is inserted into the fixing piece 35 of the bus bar 30 to be described below serves to prevent the flow and deformation of the bus bar 30. Therefore, the width of the fixing groove 25 is formed to correspond to the thickness of the bus bar (30). The fixing groove 25 is formed by recessing a predetermined depth to both sides of the vertical surface (23).

Extending orthogonally from the vertical surface 23, a second seating surface 26 is formed. That is, the second seating surface 26 is formed to be stepped with the first seating surface 22 about the vertical surface 23. The second seating surface 26 is a portion on which the second seating portion 36 of the bus bar 30 to be described below is seated. Like the first seating surface 22, the second seating surface 26 is configured such that a portion of the center thereof is opened so that the nut N may be exposed.

A coupling groove 29 is formed at the front end of the second seating surface 26. The coupling groove 29 is a portion for fixing the coupling portion 38 of the bus bar 30 to be described below, and serves to prevent the flow and deformation of the bus bar 30 together with the fixing groove 25. do. The coupling groove 29 is formed in a direction orthogonal from the tip of the second seating surface 26. Like the fixing groove 25, the coupling groove 29 has a width corresponding to the thickness of the bus bar 30, and is formed by recessing a predetermined depth to both open sides of the second seating surface 26.

The case 10 is equipped with a bus bar 30. As shown in FIG. 3, the appearance and skeleton of the busbar 30 are formed by the body portion 31. The body part 31 is fixed to the case 10 and is electrically connected to other electrical components mounted on the case 10.

The body portion 31 is formed with a first seating portion (32). The first seating portion 32 is seated on the first seating surface 22 and connected to the fuse 40 to be described below. A first fastening hole 32 ′ is formed in the first seating part 32. As shown in FIG. 4, the first fastening hole 32 ′ is penetrated by the bolt B to be fastened with the nut N, so that the first seating part 32 is firmly attached to the case 10. To be fixed.

The protrusion 33 is formed on the upper surface of the first seating part 32. The protruding portion 33 is formed by cutting a portion of the first seating portion 32 so that the cut portion is bent orthogonally upward from the first seating portion 32. In this embodiment, a pair of protrusions 32 are formed. The protrusion 33 is a portion into which the insertion portion 43 of the fuse 40 to be described below is inserted. At this time, the protrusion 33 has a shape corresponding to the shape of the insertion part 43 of the fuse 40. The protrusion 33 prevents flow when the fuse 40 is fastened by the bolt B, and when the insert 43 is inserted into the protrusion 33, the fuse 40 is inserted into the bus bar (B). This is to pre-assemble in 30).

The upright part 34 is connected to the first seating part 32. The upright portion 34 is a portion that is bent orthogonally from the first seating portion 32 and is supported on the vertical surface 23.

At this time, the fixing piece 35 is formed in the upright part 34. The fixing piece 35 is formed to protrude to both sides of the upright portion 34, and is inserted into the fixing groove 25, thereby preventing the bus bar 30 from flowing.

A second seating portion 36 is formed to be bent orthogonally from the tip of the upright portion 34 to be stepped with the first seating portion 32. That is, the second seating portion 36 is configured in a staircase shape together with the first seating portion 32 and the upright portion 34. The second seating part 36 is a part seated and fixed to the second seating surface 26, and the ring terminal is electrically connected to each other by being coupled to an upper surface thereof. A fastening hole 36 ′ is formed in the second seating part 36, similarly to the first seating part 32, through which the bolt B is fastened to the nut N.

A coupling part 38 is formed at the tip of the second seating part 36. The coupling part 38 extends perpendicularly from the second seating part 36 and is inserted into and fixed to the coupling groove 29. The coupling part 38, together with the fixing piece 35, serves to prevent the flow and deformation of the bus bar 30 by making the bus bar 30 more firmly mounted to the case 10. Do it. At this time, the coupling portion 38 is formed to have a thickness corresponding to the width of the coupling groove 29, it can be fixed without play in the state inserted into the coupling portion 38.

The fuse 40 is mounted on an upper surface of the first seating part 32. The fuse 40 serves to block a circuit instantaneously when a current of a predetermined value or more flows in order to prevent excessive current from flowing into the junction box. The fuse 40 is fastened and fixed to the bus bar 30 by bolts.

The fuse 40 includes a current blocking unit 41 and a fixing unit 42. The current blocking unit 41 is provided with a blocking line (not shown) made of a thin metal therein. The current blocking unit 41 serves to block a circuit instantaneously when a current of a predetermined value or more flows.

Fixing parts 42 are formed at both ends of the current blocking part 41. The fixing part 42 extends in a direction opposite to each other with respect to the current blocking part 41. The fixing part 42 is seated on the first seating part 32 of the bus bar 30, and is fastened by bolts B. A second fastening hole 42 ′ is formed in the fixing part 42. The second fastening hole 42 ′ is formed in communication with the first fastening hole 32 ′ of the bus bar 30. The second fastening hole 42 ′ is penetrated by the bolt B to be fastened with the nut N, so that the fixing part 42 may be firmly fixed to the first seating part 32.

In addition, the fixing part 42 is formed to penetrate the insertion part 43. The insertion part 43 is a part formed by penetrating a part of the fixing part 42. The insertion part 43 is formed to have a shape of the protrusion part 33. The insertion part 43 is a part inserted into the protrusion part 33 when the fixing part 42 is seated on the first seating part 32. That is, the insertion part 43 is inserted into the protrusion part 33, so that when the fixing part 42 is fastened to the first seating part 32 by the bolt B by the bolt B, the bolt B is used. By the rotational force of the) serves to prevent the fuse 40 to flow. In addition, the insertion part 43 is inserted into the protruding part 33, whereby the fuse 40 is temporarily assembled to the bus bar 30.

5 is an exploded perspective view showing a main configuration of another embodiment of the fuse fixing structure according to the present invention.

According to another embodiment of the present invention, the insertion portion 43 may be formed by cutting a part of both ends of the fixing portion 42. In addition, the protrusion part 33 is formed by bending a part of the first seating part 32 at a position corresponding to the insertion part 43. The insertion part 43 is formed to be positioned between the protrusions 33. In other words, the insertion part 43 is supported and fixed between the protrusions 33. In this case, when the fixing part 42 is fastened to the first seating part 32 by the bolt B, the insertion part 43 is fixed between the protrusions 33 to thereby secure the bolt B. Due to the rotational force of the fuse 40 is prevented from flowing. In addition, the insertion part 43 is supported by the protrusion part 33, so that the fuse 40 is temporarily assembled to the bus bar 30.

Hereinafter will be described in detail the operation of the fixing structure of the fuse according to the present invention having the configuration as described above.

First, a process in which the bus bar 30 is mounted to the case 10 will be described. At this time, as shown in Figure 2, the nut (N) is already in the state seated on the case (10). In this state, the body portion 31 of the bus bar 30 is inserted into the insertion groove 12 formed in the case 10, and the first and second seating portions 32 and 36 are respectively The first seating surface 22 and the second seating surface 26 are seated.

At this time, in the process of mounting the bus bar 30, the fixing piece 35 is inserted into the fixing groove 25. At the same time, the coupling portion 38 is inserted into the coupling groove 29. In other words, when the first and second seating portions 32 and 36 are seated, the fixing piece 35 and the coupling portion 38 are fitted into the fixing groove 25 and the coupling groove 29, respectively. do.

After the bus bar 30 is mounted, the fuse 40 is seated on an upper surface of the bus bar 30. More precisely, the fixing part 42 of the fuse 40 is seated on the upper surface of the first seating part 32. In this case, as shown in FIG. 4, the insertion portion 43 of the fuse 40 is fitted to the protrusion 33 of the bus bar 30.

Next, when the insertion portion 43 of the fuse 40 is fitted to the protrusion 33 of the bus bar 30, the first fastening hole 32 ′ of the first seating portion 32 and the The second fastening holes 42 'of the fixing part 42 are positioned in communication with each other. In this state, the bolt B is assembled to pass through the first fastening hole 32 ′ of the first seating part 32 and the second fastening hole 42 ′ of the fixing part 42. Then, when the bolt (B) is fastened, the fuse 40 is in close contact with the bus bar 30 is coupled to each other. In this case, since the fuse 40 may be fixed by the protrusion 33 of the bus bar 30, the fuse 40 may be damaged due to the rotational force of the bolt when the bolt B is tightened. It can be prevented.

In addition, the insertion portion 43 of the fuse 40 is inserted into the protruding portion 33 of the bus bar 30 so that the fuse 40 is temporarily assembled to the bus bar 30. At this time, the first fastening hole 32 ′ of the first seating part 32 and the second fastening hole 42 ′ of the fixing part 42 are positioned in communication with each other to facilitate fastening using the bolt B. do.

Finally, the upper cover and the lower cover are combined with the case 10 to be mounted inside the vehicle to finish.

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

In the fuse fixing structure according to the present invention as described in detail above, the following effects can be obtained.

In the fuse fixing structure according to the present invention, the insertion portion formed in the fuse is inserted and fixed to the protrusion formed on the busbar. Therefore, the fuse is not rotated even when the rotational force is transmitted by the bolt fastened to the fuse, thereby preventing damage to the fuse and reducing the defective rate of the fuse, thereby increasing reliability of the product.

In addition, the insertion portion formed in the fuse is inserted into the protrusion portion formed in the bus bar to be temporarily assembled. Therefore, since the fastening hole formed in the fuse and the fastening hole formed in the bus bar are positioned and fixed in communication, there is an effect of improving workability as the fastening using a bolt is easy.

Claims (5)

A bus bar seated on a seating surface formed in the junction box, the first fastening hole penetrating therethrough, and protruding from the upper surface to form a protrusion; The protrusion is seated on the bus bar, the second fastening hole communicating with the first fastening hole is coupled to the bus bar by a fastener, and is formed at a position corresponding to the protrusion so that the protrusion is inserted into the bus bar. A fuse fixing structure configured to include; a fuse in which the insertion portion is formed. The method of claim 1, wherein the fuse, A current interrupting unit; Fixing parts extending in opposite directions at both ends with respect to the current blocking part, respectively, inserting parts inserted into the protruding portions of the bus bar, and passing through the second fastening hole communicating with the first fastening hole of the bus bar; Fuse fixing structure, characterized in that configured to include. The method of claim 2, The protruding portion is a fuse fixing structure, characterized in that a portion of the bus bar is bent orthogonally from the bus bar. The method of claim 3, wherein And the insertion part is formed by penetrating a portion of the fixing part such that the protrusion is inserted. The method of claim 3, wherein And the insertion part is formed by cutting a portion of both ends of the fixing part so as to be fixed between the protrusions.

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