JPH0878076A - Fuse box - Google Patents

Abstract

PURPOSE: To provide a fuse box with which insertion workability and insertion reliability of an electric wire connection terminal into an electric wire connection terminal insertion part can be improved. CONSTITUTION: A bus bar storage part 13 and an electric wire connection terminal insertion part 14 are installed adjacently and a fuse 18 is attached to a relay terminal 15 connected with a tub 12b of a bus bar 12 stored in the bus bar storage part and also to an electric wire connection terminal 17 stored in the electric wire connection terminal insertion part. Regarding the fuse box, the bus bar storage part is composed by arranging a bus bar main body storage part 13a and a tub and relay terminal storage part 13b in parallel in the horizontal direction, the tub and relay terminal storage part 13b is to store a tub projected by bending from the opposite side to the fuse connection side of the bus bar main body to be stored in the bus bar main body storage part 13a and a relay terminal to be connected with the projected tub. The end face 13c of the bus bar storage part opposite to the fuse connection side is set in almost the same plane as that of the end face 14a on the terminal insertion side of the electric wire connection terminal insertion part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse box, and more particularly, to a fuse box capable of improving workability and certainty of insertion of an electric wire connecting terminal into an electric wire connecting terminal inserting portion adjacent to a bus bar accommodating portion. .

[0002]

2. Description of the Related Art Conventionally, in a wire harness for a vehicle,
In order to protect the electric circuit, fuses are provided between the power source side and a large number of electric components, and these fuses are made of synthetic resin shown in FIGS. 6A and 6B in order to improve maintainability. A fuse bar 1 made of aluminum is collectively installed, and a bus bar 2 formed by punching out a conductive metal plate is housed in the fuse box 1 to distribute power.

That is, the fuse box 1 is provided with an electric wire connection terminal insertion portion 4 (hereinafter referred to as a terminal insertion portion) inside the bus bar accommodating portion 3, and the bus bar accommodating portion 3 has a bus bar 2 as shown in FIG. Is inserted vertically. The bus bar 2 has tabs 2b protruding in the fuse mounting direction at intervals along one edge of the bus bar main body 2a formed of a long flat plate-shaped conductive path in the fuse connecting direction, and relayed to each tab 2b. The terminal 5 is attached. Bus bar 2 above
Accommodates the busbar body 2a in the busbar body accommodating portion 3a of the busbar accommodating portion 3, and accommodates the tab 2b and the relay terminal 5 in the tab / relay terminal accommodating portion 3b.

On the other hand, the terminal insertion portion 4 is formed along the intermediate protective wall 1a of the tab / relay terminal accommodating portion 3b, and each terminal insertion portion 4 has a tip end of an electric wire 6 connected to an electrical component. The crimped wire connection terminal 7 is inserted. In this way, the fuse 8 is attached by inserting and connecting the terminals 8 a and 8 b on both sides of the fuse 8 to the relay terminal 5 and the wire connecting terminal 7 which are arranged adjacent to each other.

Since the bus bar 2 is formed by punching out a metal plate, the bus bar body 2a is arranged vertically and the fuse 8 is used unless the relay terminal 5 is used as described above.
Unable to connect with. Moreover, since it also serves as power distribution, it is necessary to set a large value corresponding to the current value, so that the height H1 of the busbar body 2a (see FIG. 5).
Will be higher.

Therefore, in order to make the relay terminal 5 on the side on which the fuse 8 is attached the same height as the wire connection terminal 7, the busbar body accommodating portion 3a for accommodating the busbar body 2a is higher than the height L2 of the terminal insertion portion 4. The height L1 is projected. In recent years, due to the demand for miniaturization of the fuse box 1 as a whole, the fuse 8 can be mini-fused, and the wire connection terminal 7 can be miniaturized accordingly, but since the fuse capacity itself does not change, even if the relay terminal is miniaturized, the bus bar itself can be miniaturized. Can not be miniaturized. Therefore, when the relay terminal 5 connected to the fuse and the electric wire connection terminal 7 have the same height, the tendency of the bus bar body accommodating portion 3a to project becomes remarkable.

[0007]

However, if the bus bar body accommodating portion 3a projects more than the terminal inserting portion 4, the operator's finger is not to be inserted when the electric wire connecting terminal 7 is inserted into the terminal inserting portion 4. Interferes with the accommodation port end surface 3c of the bus bar body accommodation portion 3a, and the electric wire connection terminal 7 is inserted into the terminal insertion portion
Cannot be inserted securely. For this reason, although the electric wire 6 is held and the electric wire connecting terminal 7 is inserted into the terminal insertion portion 4, when the electric wire 6 is thin, the electric wire 6 is bent and cannot be reliably inserted.

If the wire connecting terminal 7 cannot be securely inserted into the terminal inserting portion 4, when the fuse 8 is inserted and connected,
The electric wire connection terminal 7 is pushed out from the terminal insertion portion 4 and becomes non-conductive. Further, when the wire connection terminal 7 is not pushed out and the tip of the terminal of the fuse 8 is in contact with the fuse 8, it is determined by the continuity check that there is no discontinuity, but the wire connection terminal 7 is removed from the terminal insertion portion 4 due to vehicle running vibration or the like. If it exits, it will become non-conductive at that point, causing a serious accident.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a fuse box capable of improving the workability and the certainty of inserting the electric wire connecting terminal into the electric wire connecting terminal inserting portion. It is intended.

[0010]

In order to achieve the above object, the first aspect of the present invention provides a busbar tab accommodated in a busbar accommodating portion in which a busbar accommodating portion and a wire connection terminal insertion portion are provided adjacent to each other. In a fuse box in which a fuse is attached to the relay terminal connected to the wire connection terminal and the wire connection terminal housed in the wire connection terminal insertion part, the busbar housing part includes a busbar body housing part and a busbar body housed in the busbar body housing part. A tab and a relay terminal accommodating portion that accommodates a tab that is bent and protrudes from the side opposite to the fuse connection side and a relay terminal that is connected to the tab are formed continuously in parallel in the horizontal direction. Provided is a fuse box, characterized in that the end surface of the opposite side of the bus bar accommodating portion is set substantially flush with the end surface of the wire connection terminal inserting portion on the terminal insertion port side. That.

The tab of the bus bar main body is bent toward the fuse connection side from a protruding portion which is projected from the tip of the bus bar main body on the side opposite to the fuse connection side with a gap and is bent substantially at a right angle to the electric wire connection terminal insertion side. It has a protruding shape. (Claim 2) Alternatively, in the bus bar body, the side opposite to the fuse connection side is bent at a substantially right angle to the wire connection terminal insertion portion side to form an L-shape, and a protruding portion is formed at a distance from the bent portion. Are projected, and are bent in a substantially right-angled direction from these projections to project toward the fuse connection side. (Claim 3) By forming the tab on the bus bar as described above, the fuse connection side end surface of the relay terminal connected to each tab becomes the fuse connection side end surface of the wire connection terminal inserted into the wire connection terminal insertion portion. , Located on the same plane.

[0012]

According to the first aspect of the present invention, by setting the end surface of the busbar accommodating portion of the fuse box (the end surface on the busbar accommodating port side) to be substantially flush with the insertion port end surface of the wire connection terminal inserting portion, When inserting the wire connection terminal into the insertion part, the operator's finger is less likely to interfere with the end face of the accommodation opening of the busbar body accommodation part, improving the insertion workability and ensuring the wire connection terminal in the terminal insertion part. Can be inserted into. Therefore, when the fuse is inserted and connected, the wire connection terminal will not be pushed out of the terminal insertion part and become non-conducting, or the wire connection terminal will not come out of the terminal insertion part and become non-conducting due to running vibration of the vehicle. Is improved.

In the second and third aspects, the tab provided on the busbar body is formed by projecting and bending from the side opposite to the fuse connection side, and the tab and the relay terminal connected to the tab are substantially parallel to the busbar body. Since the bus bar is arranged, the height of the bus bar accommodating portion can be lowered while the tab and the relay terminal are connected while the bus bar main body is set large in proportion to the current value. Therefore, even if the height of the wire connection terminal accommodating portion becomes low, the height of the bus bar accommodating portion can be reduced accordingly, and the end surface of the bus bar accommodating portion should be the same height as the insertion side end surface of the wire connecting terminal accommodating portion. You can

[0014]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in FIG. 4, in the fuse box 11 made of synthetic resin, the bus bar accommodating portion 13 and the wire connection terminal inserting portion 14 are arranged to face each other with the intermediate protective wall 11a interposed therebetween. As shown in detail in FIGS. 2 (A) and 2 (B), the bus bar housing portion 13 of the fuse box 11 divides the intermediate protective wall 11a and the outer protective wall 11b at regular intervals in the length direction. Formed by partitioning with the wall 11d,
The wire connection terminal insertion portion 14 is formed by partitioning the space between the intermediate protection wall 11a and the inner protection wall 11c with a partition wall 11e at the same position as the partition wall 11d.

In the bus bar accommodating portion 13, the bus bar 1
In order to insert the bus bar main body 12a of No. 2 into the accommodation opening 13d and to accommodate it, the slit-shaped bus bar main body accommodation part 1
3a, the tab 12b of the bus bar 12, and the tab 12b
It has a tab / relay terminal accommodating portion 13b for accommodating the relay terminal 15 connected to. Although the conventional busbar housing 3 shown in FIG. 6 has a shape in which the busbar body housing 3a and the tab / relay terminal housing 3b are continuous in the vertical direction, in the present invention, the busbar body housing 13a The tab / relay terminal accommodating portion 13b is continuous in parallel in the horizontal direction. That is, the tab / relay terminal accommodating portion 13b is the partition wall 11
Although it is partitioned by d, the slit portion provided in the partition wall 11d serves as the bus bar main body accommodating portion 13a.

The electric wire 1 is inserted in the electric wire connecting terminal insertion portion 14.
It has a lance part 14c for locking the electric wire connecting terminal 17 crimped to 6 at a fixed insertion position when the wire connecting terminal 17 is inserted from the insertion port 14b.

Storage port 1 of the bus bar main body storage portion 13a
Conventionally, the end surface 13c of 3d is the wire connection terminal insertion portion 1
4 is larger than the end surface 14a of the insertion port 14b of No. 4 (see FIG. 6).
(See (B)). This is because the height H1 (see FIG. 5) of the busbar main body 2a is increased in proportion to the current value.
Was to house. On the other hand, in the present embodiment, the accommodation port end surface 13c of the bus bar main body accommodation portion 13a is
It is set to be substantially flush with the insertion port end surface 14a of the wire connection terminal insertion portion. Therefore, it is necessary to secure the height H1 of the busbar main body 12a corresponding to the dimension L1 in the busbar housing portion 13.

Therefore, as shown in FIG. 1, the bus bar 12
Of the bus bar main body 12a has a height H1, and the tab 12b protruding from the bus bar 12 has a rear end edge 12c opposite to the fuse connection side of the bus bar main body 12a opposite to the fuse connection direction, contrary to the conventional art. From this, a protrusion 12k is provided at a distance from the side opposite to the fuse connection direction, and is bent substantially at a right angle from the protrusion 12k to the wire connection terminal insertion portion 14 side, and protrudes to the tip edge 12d on the fuse connection side. To form the tab 12b, and the relay terminal 15 is formed on the tab 12b.
I am trying to attach. Further, a front stop projection 12f is provided on the edge of the tab 12b on the side of the wire connection terminal insertion portion so as to prevent the relay terminal 15 from tilting.

As described above, the electric wire of the busbar main body 12a is formed by projecting from the side opposite to the fuse connection side of the busbar main body 12a and providing the tab 12b by bending it and connecting the relay terminal 15 to the tab 12b. On the connection terminal insertion portion 14 side, in parallel with the bus bar main body 12a,
The tab 12b and the relay terminal 15 are positioned. Therefore, the busbar body 12a, the tab 12b, and the relay terminal 15 are provided in the busbar body housing portion 13a and the tab / relay terminal insertion portion 13b of the busbar housing portion 13 having the same height as the height L2 of the wire connection terminal insertion portion 14. Each can be accommodated.

Therefore, the accommodation port end surface 13c of the busbar body accommodation portion 13a of the fuse box 11 is substantially flush with the insertion port end surface 14a of the wire connection terminal insertion portion 14, so that the wire connection terminal insertion portion 14 is connected to the wire. Terminal 17
When inserting, the fingers of the operator are less likely to interfere with the accommodation port end surface 13c of the busbar body accommodating portion 13a, and the insertion workability is improved. Further, the wire connection terminal 17 can be reliably inserted into the wire connection terminal insertion portion 14. As a result, the terminals 8a and 8b of the fuse 18 are connected to the relay terminal 15
And the electric wire connection terminal 17 are inserted and connected, the electric wire connection terminal 17 is pushed out of the electric wire connection terminal insertion portion 14 and becomes non-conductive, or the electric wire connection terminal 17 is pulled out from the electric wire connection terminal insertion portion 14 due to traveling vibration of the vehicle. Will not become non-conductive.

FIG. 3 shows a modification of the bus bar 12, in which the bus bar main body 12a having a height H1 is bent at a substantially right angle to the wire connection terminal insertion portion 14 side in the direction opposite to the fuse connection side, and L
The height is lowered by making it a letter shape. Tab 12b
Is folded back from the one side edge of the bent portion 12e of the bus bar body 12a at a substantially right angle in the fuse connecting direction so as to project.

[0022]

As is apparent from the above description, the fuse box of the present invention is characterized in that, in claim 1, the end face of the bus bar body accommodating portion of the fuse box is connected to the end face of the electric wire connecting terminal inserting portion. Since it is set on almost the same surface, when inserting the wire connection terminal into the terminal insertion part,
The operator's finger is less likely to interfere with the end face of the accommodation opening of the bus bar main body accommodation portion, the insertion workability is improved, and the wire connection terminal can be reliably inserted into the terminal insertion portion. Therefore, when the fuse is inserted and connected, the wire connection terminal will not be pushed out of the terminal insertion part and become non-conducting, or the wire connection terminal will not come out of the terminal insertion part and become non-conducting due to running vibration of the vehicle. Will be improved.

The end face of the accommodation opening of the bus bar body accommodating portion is
In order to make it substantially flush with the insertion port end surface of the wire connection terminal insertion portion, the tab is the rear end in the accommodation direction of the bus bar main body when the bus bar main body is set large in proportion to the current value as in claim 2. Bend from the edge to the wire connection terminal insertion portion side at a substantially right angle so as to protrude toward the tip edge side in the housing direction, or in the state where the bus bar body is set large corresponding to the current value as in claim 3. , The busbar body is
The tab may be bent at a substantially right angle to the wire connection terminal insertion portion side, and the tab may be bent at a substantially right angle from the bent portion of the bus bar main body to the leading edge side in the housing direction so that the tab protrudes toward the leading edge side in the housing direction. It can be manufactured easily and at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a bus bar, an electric wire connection terminal and the like of the present invention.

2A and 2B are a busbar accommodating portion and an electric wire connection terminal insertion portion of a fuse box, in which (A) is a perspective view and (B) is (A).
2 is a cross-sectional view taken along line I-I of FIG.

FIG. 3 is a perspective view of a modified bus bar.

FIG. 4 is a plan view of a main part of a fuse box.

FIG. 5 is a perspective view of a conventional bus bar, a wire connection terminal, and the like.

6A and 6B are a busbar accommodating portion and an electric wire connection terminal insertion portion of a fuse box, in which FIG. 6A is a perspective view and FIG. 6B is FIG.
11 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 11 Fuse Box 11a Intermediate Protective Wall 12 Busbar 12a Busbar Body 12b Tab 12c Rear Edge 12d Tip Edge 12e Bend 13 Busbar Housing 13a Busbar Body Housing 13b Tab / Relay Terminal Housing 13c Housing Port End Surface 14 Wire Connection Terminal Insert 14a Insert end face 15 Relay terminal 16 Electric wire 17 Electric wire connection terminal 18 Fuse L2 Height

Claims (3)

[Claims] 1. A relay terminal connected to a tab of a bus bar accommodated in the bus bar accommodating portion and a wire connection terminal accommodated in the electric wire connecting terminal insertion portion, wherein the bus bar accommodating portion and the electric wire connecting terminal inserting portion are provided adjacent to each other. In a fuse box to which a fuse is attached, the busbar housing portion is connected to the busbar body housing portion, a tab protruding from the side opposite to the fuse connection side of the busbar body housed in the busbar body housing, and the tab protruding from the opposite side. Tab and relay terminal accommodating part that accommodates the relay terminal,
It is formed continuously in parallel in the horizontal direction, and the end face of the bus bar accommodating portion on the side opposite to the fuse connection side is set to be substantially flush with the end face on the terminal insertion port side of the wire connection terminal insertion portion. A characteristic fuse box. 2. A tab of the busbar body is connected to a fuse connecting side of the busbar body by bending the tab from a protruding end of the busbar body on the side opposite to the fuse connecting side at a substantially right angle to the wire connecting terminal inserting section side. The fuse connection side end surface of the relay terminal connected to each of the tabs is located on the same plane as the fuse connection side end surface of the wire connection terminal inserted into the wire connection terminal insertion portion. The fuse box according to claim 1. 3. The busbar main body is bent at a substantially right angle to the side of the wire connection terminal insertion portion on the side opposite to the fuse connection side to form an L-shape, and a protruding portion is projected at a distance from the bent portion. , The fuse connecting side end face of the relay terminal connected to each of the above tabs is bent into a shape that is bent at a substantially right angle from these protruding portions and protrudes toward the fuse connecting side. The fuse box according to claim 1, wherein the fuse box is located on the same plane as the connection-side end surface.