JP2001256878A - Fuse box unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuse box unit of improved durability. SOLUTION: A first bus bar 21, a second bus bar 22 and a fuse element 23 are formed in one piece to constituted a fuse body 13. A battery connecting part 21b and a first folded part 21c are incorporated into a first base plate 21a to form the first bus bar 21. A second folded part 22b is incorporated into a second base plate 22a to form the second bus bar 22. The second folded part 22c is so disposed as to be on the same plane as the first folded part 22b. Both of the folded parts are positioned at the symmetric points with the center axis of the battery connecting part 21b. The fuse body is resin molded so that the surfaces of the battery fitting part 21b, the first and second folded parts 21c and 22b, fuse elements 23 and 26 and output terminals 27 are exposed. The fuse box 12 is made of the mold resin material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse box unit having a fuse body and a fuse box for housing the fuse body.

[0002]

2. Description of the Related Art Conventionally, as a fuse box unit mounted in an automobile, a fuse box unit directly mounted on a battery is known. Here, a conventional example is shown in FIG.

[0003] The fuse box unit 51 includes a fuse box 52 and a fuse body 53. The fuse body 53 is made of a conductive metal plate and is formed in a predetermined shape. The metal plate includes a first bus bar portion 54 connected to a terminal of the battery 50, a second bus bar portion 55 connected to a predetermined distribution line, and a fuse element portion 56a connecting the two bus bar portions 54 and 55. It is formed integrally. In the second bus bar portion 55, three output terminal portions 57 each having a through hole 57a are integrally formed via a fuse element portion 56b.

The first bus bar portion 54 has a base portion 54a and a battery mounting portion 54b formed by bending an upper end portion of the base portion 54a at a right angle. A through hole 58 is provided through the battery mounting portion 54b, and a through hole 59 is provided through the upper edge of the base 54a. Second bus bar 55
Is formed on the same plane as the base portion 54a, and a through hole 60 is formed through the upper edge thereof.

The fuse box 52 includes a fuse body 53
Has an internal space 52a capable of accommodating therein. On the inner surface of the fuse box 52, the male screw portion 6 protruding toward the opening is provided at a position corresponding to the bolt insertion portions 59 and 60.
1 and 62 are respectively formed. Further, the battery mounting portion 54b is formed on the inner wall 52b of the fuse box 52.
An insertion hole 63 through which the battery mounting portion 54b can be inserted is provided in a position corresponding to the above. The fuse body 53 allows the male screw portions 61 and 62 to pass through the through holes 59 and 60, and the battery mounting portion 54 b to pass through the through holes 6.
3 and housed in the fuse box 52.

As shown in FIG. 4, the battery mounting portion 54b
The male screw portion 64a of the battery post 64 made of a conductive material is inserted into the through hole 58. Then, the nut 65 is screwed into the male screw portion 64a, so that the battery mounting portion 54b and the battery post 64 are connected. The battery post 64 is connected to the power supply terminal 5 of the battery 50.
0a. As a result, the power supply terminal 50a and the fuse body 53 are electrically connected, and the fuse box unit 51 is arranged along the side surface of the battery 50. In other words, the fuse box unit 51
The battery mounting portion 54b is arranged in a state of being hooked on the upper surface of the battery 50. Therefore, the fuse box unit 51 is directly attached to the battery 50.

[0007]

However, as shown in FIG. 4, the fuse box unit 51 is supported with only the battery mounting portion 54b hooked on the upper surface of the battery 50. For this reason, the weight of the fuse box unit 51 is supported only by the battery mounting portion 54b. As shown in FIG. 3, each output terminal unit 57 has a distribution line 66 for supplying power to various electrical components.
Are respectively mounted. In addition, distribution lines (not shown) for supplying power to electrical components requiring a large current, such as a starter and an alternator, are attached to the male screw portions 60 and 61, respectively. Therefore, the weight of the fuse box unit 51 increases. Therefore, the load due to the weight of the fuse box unit 51 or the load due to the vibration during traveling of the vehicle may damage the battery mounting portion 54b. In particular, each male screw portion 60, 61
Since a large current flows through the distribution line, a thick and heavy distribution line is used. Therefore, the load applied to the battery mounting portion 54b is large, and the battery mounting portion 54b is easily damaged.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fuse box unit capable of improving durability.

[0009]

According to the first aspect of the present invention, there is provided a fuse box unit having a plate-shaped fuse body and a fuse box capable of accommodating the fuse body. A first bus bar portion having a battery mounting portion that can be directly attached to a terminal of a battery, a second bus bar portion to which a distribution line that supplies power to various electrical components is attached, A fuse element portion integrally provided on both bus bar portions to connect the bus bar portions to each other,
At least one of the bus bar portions is formed with a bent piece capable of arranging the unit along the side surface of the battery while being hooked on the upper surface of the battery. The gist of the present invention is to provide an electric wire mounting portion capable of mounting a distribution line for supplying electric power to a product.

According to a second aspect of the present invention, in the fuse box unit according to the first aspect, the bent pieces are provided on both bus bar portions so as to be symmetrical about the battery mounting portion. And

According to a third aspect of the present invention, in the fuse box unit according to the first or second aspect, the bent piece is molded with a resin material integrally formed with the fuse box. Is the gist.

The "action" of the present invention will be described below. According to the first aspect of the present invention, at least one of the bus bar portions is formed with a bent piece that can be disposed while being hooked on the upper surface of the battery. For this reason, the fuse box unit is supported by the battery mounting portion and the bent piece, and the strength of the supporting portion is increased. Therefore, even if a load due to the weight of the unit or a load due to vibration is applied to the support location, the support location is less likely to be damaged.

In addition, the distribution line connected to the specific electrical component is mounted on a wire mounting portion provided on the bent piece. Since the bent piece is disposed on the upper surface of the battery, the weight of the distribution line is supported by the battery. Therefore, the load applied to the support portion of the fuse box unit can be reduced. In particular, if a heavy and heavy distribution line connected to an electrical component requiring a large current to be supplied is mounted on the wire mounting portion, the load applied to the support portion of the fuse box unit can be significantly reduced. Therefore,
The battery mounting portion and the bent piece are hardly damaged, and the durability of the fuse box unit is improved.

According to the second aspect of the present invention, the bent pieces are provided on both bus bar portions. And these bent pieces are provided in the position which becomes symmetrical about the battery mounting part. For this reason, it is possible to prevent a biased load from being applied to the battery mounting portion. Therefore, damage to the battery mounting portion is particularly prevented, and the durability of the fuse box unit is further improved.

According to the third aspect of the present invention, the bent piece is molded by a resin material integrally formed with the fuse box. For this reason, the strength of the bent piece is improved, and breakage of the battery mounting portion and the bent piece can be more reliably suppressed. Therefore, the durability of the fuse box unit can be further improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a fuse box unit for an automobile will be described below in detail with reference to FIGS.

As shown in FIG. 1A, the fuse box unit 11 includes a fuse box 12, a fuse body 13, and a cover 14. As shown in FIG. 1B, the fuse body 13 is formed using a single conductive metal plate. As a forming material of the conductive metal plate,
Silver, copper, zinc, tin, lead, and alloys thereof are commonly used. The fuse body 13 is formed by punching this metal plate into a predetermined shape.
As a result, the first bus bar 2
1, the second bus bar portion 22 and the bus bar portions 21 and
2 are integrally formed. The fuse element portion 23 is formed in a substantially “S” shape. One end of the fuse element portion 23 is connected to the first bus bar portion 21, and the other end is connected to the second bus bar portion 22.

The first bus bar portion 21 is composed of a first substrate 21a extending in the vertical direction, a battery mounting portion 21b in which an upper portion of the first substrate 21a is bent and extending in the horizontal direction, and a first bent piece 21c. I have. Battery mounting part 21
A circular through hole 24 is provided substantially at the center of b, and a circular through hole 25 is provided substantially at the center of the first bent piece 21c.

The second bus bar portion 22 includes a second substrate 22a extending in the vertical direction, a second bent piece 22b which is bent at the top of the second substrate 22a and extends in the horizontal direction, and a plurality (three in this embodiment). ) And an output terminal 27. The second substrate 22a has a substantially “L” shape, and the second bent piece 22b is bent at the uppermost portion. At a substantially center of the second bent piece 22b, a circular through hole 28 is provided. The second bent piece 22b is located on the same plane as the first bent piece 21c, and is formed at a position symmetrical to the first bent piece 21c about the battery mounting portion 21b. Therefore, as shown in FIG. 1B, the distance from the center of the through hole 25 to the through hole 24 of the battery mounting portion 21b is equal to the distance from the center of the through hole 28 to the through hole 24. .

Further, each fuse element portion 26 is formed in a substantially "S" shape. One end of each fuse element 26 is integrally formed in parallel with the lower end edge of the second substrate 22a, and the other end is integrally formed with the output terminal 27. Each output terminal portion 27 has a through hole 29 provided therethrough. Each fuse element 26 is formed to be thinner than the fuse element 23.

The fuse body 13 thus configured is
As shown in FIG. 1A, it is molded with a synthetic resin. Specifically, the fuse body 13 includes a battery mounting portion 21b, surfaces of the first and second bent pieces 21c and 22b,
Resin molding is performed so that the surfaces of the fuse element portions 23 and 26 and the output terminal portion 27 are exposed.
The fuse box 12 is formed of the molded resin material. Therefore, the fuse body 13 is housed in the fuse box 12.
As shown in FIG. 2, the fuse box 12 has a substantially hook shape with an upper portion projecting laterally in a side view, and is formed so as to reinforce the bent pieces 21 c and 22 b.
That is, the resin part for molding each of the bent pieces 21c and 22b is a reinforcing means.

Each through hole 25 of each bent piece 21c, 22b,
Bolts 31 and 32 are inserted through 28 from below. The seating surfaces of the bolts 31 and 32 and the bent pieces 21
Each of the bolts 31,
The head of 32 is molded together with the bent pieces 31 and 32. For this reason, each of the bolts 31 and 32 is
c, 22b and extend upwardly in electrical contact with them.

As shown in FIG. 2, a bolt 31 is provided with a distribution line 33 for supplying power to a specific electrical component.
Is installed. More specifically, the distribution line 33 is mounted by inserting a bolt 31 into a terminal portion 33 a attached to the tip and screwing a nut 34 to the bolt 31. A distribution line 33 is also attached to the bolt 32 (not shown). Therefore, the distribution line 33 attached to the bolt 31 and the bent piece 21c of the first bus bar portion 21 are electrically connected, and the distribution line 33 attached to the bolt 32 and the second
The bent piece 22b of the bus bar portion 22 is electrically connected. That is, each of the bent pieces 21c and 22b is an electric wire mounting portion. Each distribution line 33 is drawn out in the horizontal direction.

In this embodiment, a power distribution line 33 for supplying power to the starter is connected to the bolt 31, and a power distribution line 33 for supplying power to the alternator is connected to the bolt 32. I have. That is, to each of the bolts 31 and 32, a distribution line 33 for supplying electric power to electrical components that need to supply a large current is connected. The distribution line 33 has a core with a cross section of 20 to 30 mm ² .

As shown in FIG. 1, each output terminal section 27 has a distribution line 35 for supplying power to various electrical components.
Are respectively mounted. A nut (not shown) is molded on the back side of each output terminal 27 in a state in which it comes into contact with each output terminal 27. And each distribution line 35
It is mounted by screwing a bolt to a nut via a terminal attached to the tip.

In the through hole 24 of the battery mounting portion 21b,
Male thread portion 36 of battery post 36 made of conductive material
a is inserted. Then, the nut 37 is screwed into the male screw portion 36a, so that the battery mounting portion 2 is formed.
1b and the battery post 36 are connected. As shown in FIG. 2, the battery post 36 is fixed to the power supply terminal 41a of the battery 41. Thereby, the power supply terminal 41 a and the fuse body 13 are electrically connected, and the fuse box unit 11 is arranged along the side surface of the battery 41. In other words, the fuse box unit 11 is arranged with the battery mounting portion 21b hooked on the upper surface of the battery 41. Therefore, the fuse box unit 11 is directly attached to the battery 41. Further, in this state, the lower portion of the portion of the fuse box 12 that protrudes laterally, that is, the portion where the bent pieces 21c and 22b are molded, comes into contact with the upper surface of the battery 41. Therefore, the battery mounting portion 21b and each bent piece 21
c, 22b are in a state of being hooked on the upper surface of the battery 41. That is, the fuse box unit 11
Is in a state of being supported by the battery mounting portion 21b and the bending pieces 21c and 22b.

A cover 14 is attached to the fuse box 12. The cover 14 includes a box cover 14a and a lid 14b. The box cover part 14a is attached to the opening of the fuse box 12, and the lid part 14b is attached to the upper part of the fuse box 12.

Therefore, according to the present embodiment, the following effects can be obtained. (1) When the fuse box unit 11 is attached to the battery 41, the unit 11
1b and each bending piece 21c, 22b will be in the state supported. For this reason, the strength of the support portion of the fuse box unit 11 is increased, and even if a load due to the weight of the unit 11 or a load due to vibration is applied to the support portion, the support portion is hardly damaged.

Further, each distribution line 33 is formed by both bent pieces 21.
c, 22b. Since the two bent pieces 21c and 22b are arranged on the upper surface of the battery 41,
Is supported by the battery 41. Therefore, the battery mounting portion 21b and the bent pieces 21c, 22b
Can be reduced. In particular, distribution line 3
3 is a thick and heavy member connected to electrical components that need to supply a large current, so that the load applied to the battery mounting portion 21b and the bending pieces 21c and 22b can be significantly reduced. Therefore, the battery mounting portion 21b and each bent piece 21
The breakage of c and 22b can be suppressed more reliably.
Therefore, the durability of the fuse box unit 11 can be improved.

(2) Each of the bent pieces 21c and 22b is formed on each of the bus bar portions 21 and 22, respectively.
The bent pieces 21c and 22b are provided at symmetrical positions with respect to the battery mounting portion 21b. For this reason, it is possible to prevent a biased load from being applied to the battery mounting portion 21b. Therefore, damage to the battery mounting portion 21b can be particularly suppressed, and the durability of the fuse box unit 11 can be further improved.

(3) Each bent piece 21c, 22b is molded with a resin material formed integrally with the fuse box unit 11. For this reason, each bent piece 21
It is possible to improve the strength of c and 22b, and it is possible to more reliably suppress damage to the battery mounting portion 21b and the bent pieces 21c and 22b. Therefore, the durability of the fuse box unit 11 can be further improved.

(4) Since the bent pieces 21c and 22b are resin-molded, it is possible to prevent the bent pieces 21c and 22b from coming into contact with other conductive members. Therefore, a decrease in the reliability of the fuse box unit 11 can be prevented.

(5) Bolts 31 and 32 extending upward are electrically connected to the bent pieces 21c and 22b, respectively. For this reason, for each bent piece 21c, 22b,
The distribution line 33 can be easily and reliably mounted.

The embodiment of the present invention may be modified as follows. Each of the bent pieces 21c and 22b is attached to the battery mounting portion 21b.
May not be arranged symmetrically with respect to the center. For example, the bent pieces 21c and 22b may be arranged side by side so as to be adjacent to each other, and the battery mounting portion 21b may be located at the end.

In the above-described embodiment, the fuse body 13 is provided with the two bent pieces 21 c and 22 b,
c and 22 b are arranged on the upper surface of the battery 41. However, three or more bent pieces may be provided on the fuse body 13, and all of the bent pieces may be arranged on the upper surface of the battery 41. By doing so, the strength of the portion supporting the fuse box unit 11 can be further increased, and the durability of the unit 11 can be further improved.

When the number of bent pieces is an even number,
If these bent pieces are provided at positions symmetrical with respect to the battery mounting portion 21b, it is possible to prevent a biased load from being applied to the battery mounting portion 21b.

In the above embodiment, the fuse body 13 is provided with the two bent pieces 21c and 22b, and the bent pieces 21c and 22b are provided.
c and 22 b are arranged on the upper surface of the battery 41. However, one of the bent pieces 21c and 22b may be omitted. Even in this case, the battery mounting portion 21b
The fuse box unit 11 can be supported by one of the bent pieces 21c and 22b. Therefore, the durability of the fuse box unit 11 can be improved. Moreover, the fuse body 13 can have a simple configuration.

In the above embodiment, each bent piece 21c,
22b is resin molded, and the fuse box 12
It has a shape that protrudes to the side. However, the bent pieces 21c and 22b do not have to be molded. Even in this case, the battery mounting portion 21b and each bent piece 21
Since the fuse box unit 11 can be supported by c and 22b, the durability of the unit 11 can be improved. Moreover, fuse box 1
2 can have a simple configuration.

The distribution line 33 connected to each of the bent pieces 21c and 22b is not limited to one connected to an electric component such as a starter or an alternator through which a large current flows, but is connected to another electric component for a vehicle. It may be. In other words,
The distribution line 33 may be thin.

In the above embodiment, the second bus bar portion 22 has a plurality (three) of fuse element portions 26. However, the second bus bar portion 22 may not include the fuse element portions 26. That is, the second bus bar portion 22 may have any configuration as long as it is connected to the first bus bar portion 21 by the fuse element portion 23.

Next, in addition to the technical ideas described in the claims, technical ideas grasped by the above-described embodiment will be enumerated below. (1) In the fuse box unit according to claim 1 or 2, the bending piece is provided with reinforcing means. According to the invention described in the technical idea (1), the durability of the fuse box unit can be further improved.

(2) Claims 1 to 3, Technical idea (1)
In the fuse box unit according to any one of the above, one of the bent pieces is provided in each of the bus bar portions.

(3) In the fuse box unit according to any one of claims 1 to 3, and the technical ideas (1) and (2), the wire mounting portion is electrically connected to the bent piece. A male screw part that extends upward in the state of being provided. According to the invention described in the technical concept (3), it is possible to easily and surely mount a distribution line for supplying power to a specific electrical component to the wire mounting portion.

[0044]

As described in detail above, according to the first aspect of the present invention, the durability of the fuse box unit can be improved.

According to the second aspect of the invention, the durability of the fuse box unit can be further improved. According to the third aspect of the invention, the durability of the fuse box unit can be further improved.

[Brief description of the drawings]

FIG. 1A is an exploded perspective view showing an embodiment in which the present invention is embodied in a fuse box unit for an automobile;
(B) is a perspective view showing fuse body 13 used for the fuse box unit of the embodiment.

FIG. 2 is a side view of the fuse box unit of the embodiment.

FIG. 3 is an exploded perspective view showing a conventional fuse box unit.

FIG. 4 is a side view of a conventional fuse box unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Fuse box unit, 12 ... Fuse box, 13 ... Fuse body, 14 ... Cover, 21 ... 1st busbar part, 21a ... 1st board, 21b ... Battery mounting part, 21c ... Bending piece, 22 ... 2nd busbar part , 22a ...
2nd board, 22b ... bent piece, 23 ... fuse element part, 33, 35 ... distribution line, 41 ... battery, 41a ... power supply terminal.

Claims (3)

[Claims] 1. A fuse box unit comprising a plate-shaped fuse body and a fuse box capable of accommodating the fuse body, wherein the fuse body has a battery mounting portion directly attachable to a battery terminal. (1) a busbar portion, a second busbar portion to which a distribution line for supplying power to various electric components is mounted, and a fuse element portion provided integrally with both busbar portions to connect the busbar portions to each other. At least one of the bus bar portions is formed with a bent piece that can be arranged along the side surface of the battery while being hooked on the upper surface of the battery. A fuse box unit, which is provided with a wire mounting portion capable of mounting a distribution line for supplying power to specific electrical components. . 2. The fuse box unit according to claim 1, wherein the bent pieces are provided on both bus bar portions so as to be symmetrical about the battery mounting portion. 3. The fuse box unit according to claim 1, wherein the bent piece is molded with a resin material formed integrally with the fuse box.