CN111918492A - Electrical connection box - Google Patents

Abstract

The invention provides an electrical connection box capable of generalizing components for different specifications. The junction box main body (3) is provided with a dividing part (37) which is a communication part for communicating the first groove part (31) and the second groove part (32); a first electrical connection recess (35) continuous with the first groove (31); and a first electrical connection recess (36) continuous with the second groove (32). Thus, the junction box body (3) can be made common to a bus bar (2A) formed integrally by the first plate section (21) and the second plate section (22) and a bus bar (2B) formed separately by the first plate section (21) and the second plate section (22).

Description

Electrical connection box

technical field

The present invention relates to electrical connection boxes.

Background technique

Conventionally, as an electrical junction box mounted on a vehicle, there has been proposed an electrical junction box in which a plurality of bus bars constituting a base circuit are attached to a base box main body (junction box main body) (for example, see Patent Document 1). In the electrical junction box described in Patent Document 1, a base box main body is formed with a bus bar mounting groove, and some of the mounted plurality of bus bars are arranged at intervals and arranged substantially in parallel.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2018-7424

SUMMARY OF THE INVENTION

The technical problem to be solved by the invention

As described in Patent Document 1, in an electrical junction box mounted on a vehicle, the specification is determined according to the vehicle type and the like, and a bus bar corresponding to the specification is used. That is, the shape of the bus bar is determined according to the specification, and the shape of the junction box main body is determined according to the shape of the bus bar. Therefore, when the specifications are different, it is difficult to commonize each part of the electrical junction box.

An object of the present invention is to provide an electrical junction box that can make components common to different specifications.

technical means to solve the problem

The electrical junction box of the present invention is characterized by comprising: a bus bar having a first plate part and a second plate part integrally or having a first plate part and a second plate part separately; and a junction box main body , the junction box body has: a first groove part, the first groove part accommodates the first plate part; a second groove part, the second groove part and the first groove part are arranged at intervals , and accommodates the second plate portion; a communication portion that communicates one end of the first groove portion and the second groove portion with each other; a first electrical connection recessed portion, the first electrical connection recessed portion being continuous with the first groove portion; and a second electrical connection recessed portion, the second electrical connection recessed portion being continuous with the second groove portion.

Invention effect

According to the electrical junction box of the present invention, the junction box main body can be used in common when the first plate part and the second plate part are integrated, and when the first plate part and the second plate part are integrated. That is, when the first plate portion and the second plate portion are integrated, by connecting electric wires and other metal fittings to the portion continuous with the plate portion at at least one of the first electrical connection recessed portion and the second electrical connection recessed portion, Thus, the entire bus bar can be electrically connected to the external device. On the other hand, in the case of the first plate portion and the second plate partial body, by connecting electric wires and other metal fittings to the portions continuous with the plate portion in each of the first electrical connection recessed portion and the second electrical connection recessed portion, it is possible to connect the The bus bar as a whole is electrically connected to the external device. Therefore, by appropriately setting the shape of the bus bar, the junction box main body can be made common to different specifications.

Description of drawings

FIG. 1 is a bottom view showing an electrical junction box according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a bus bar of the electrical connection box.

3 is a bottom view showing an electrical junction box according to a second embodiment of the present invention.

4 is a perspective view showing a bus bar of the electrical connection box.

Symbol Description

1A, 1B electrical connection box

2A, 2B bus bar

21 The first board

212 fold back

22 Second Board Section

222 fold back

231 through hole (first connection part)

241 second connection part

25 Links

3 Junction box body

31 The first groove part

32 Second groove

35 The first electrical connection recess

36 Second electrical connection recess

37 division part (connection part)

Detailed ways

Hereinafter, each embodiment of the present invention will be described based on the drawings. In addition, in the second embodiment, the same components as the components described in the first embodiment and components having the same functions are denoted by the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted.

[First Embodiment]

As shown in FIG. 1 , the electrical connection box 1A of the present embodiment is a fuse box including a bus bar 2A and a junction box main body 3 . The electrical connection box 1A has a substantially rectangular parallelepiped shape as a whole with the connection direction as the height direction. In this embodiment, the height direction is the Z direction, and the two directions orthogonal to each other in the horizontal plane are the X direction and the Y direction.

The bus bar 2A is composed of a plate of conductive metal such as copper and aluminum, and as shown in FIG. 2 , integrally includes a first plate portion 21 , a second plate portion 22 , a first connection plate 23 , a second connection plate 24 , and a connection Section 25.

The first plate portion 21 is formed in a flat plate shape along the ZX plane, and the plurality of terminal portions 211 protrude from one edge in the Z direction. The second plate portion 22 is formed in a flat plate shape along the ZX plane, and the plurality of terminal portions 221 protrude from one edge in the Z direction. The first plate portion 21 and the second plate portion 22 are arranged at intervals in the Y direction, and are arranged parallel to each other.

The first connecting plate 23 is formed in a flat plate shape along the ZX plane, and is connected to the first plate portion 21 via the third plate portion 26 . The third plate portion 26 is formed in a plate shape along the YZ plane, is continuous with one end edge in the X direction of the first plate portion 21 , and extends in a direction away from the second plate portion 22 . That is, the first connection plate 23 extends in parallel at a position away from the second plate portion 22 with the first plate portion 21 as a reference.

The first plate portion 21 , the third plate portion 26 and the first connecting plate 23 constitute the first bus bar portion 20A. The first bus bar portion 20A extends along the ZX plane from the other side to one side in the X direction (the first plate portion 21 ), and then extends along the YZ plane so as to be away from the second plate portion 22 (the third plate portion 26 ). ), and then extend along the ZX plane toward the side in the X direction (the first connecting plate 23 ).

A through hole 231 is formed in the first connection plate 23 , and external electric wires are connected to the first connection plate 23 by inserting a bolt through the through hole 231 and tightening the nut. That is, the through hole 231 functions as the first connection portion.

The second connection plate 24 is formed by extending the second plate portion 22 to one side in the X direction, and has a convex second connection portion 241 protruding to the side opposite to the terminal portion 221 . The second plate portion 22 and the second connection plate 24 constitute the second bus bar portion 20B.

The connection portion 25 extends along the XY plane, and connects the lower end edge of the first plate portion 21 and the lower end edge of the second plate portion 22 . Thereby, the first plate portion 21 and the second plate portion 22 are formed integrally. That is, the first bus bar portion 20A and the second bus bar portion 20B are integrated, and the bus bar 2A is constituted by one member. Since the bus bar 2A has the connection portion 25 , when an external electric wire is connected to the first connection plate 23 , power is supplied to both the first plate portion 21 and the second plate portion 22 . In addition, in this embodiment, the connection part 25 connects a part of the 1st board part 21 and a part of the 2nd board part 22, but may connect the whole of the 1st board part 21 and the whole of the 2nd board part 22.

The junction box main body 3 is formed into a substantially rectangular parallelepiped with insulating synthetic resin, and the upper surface in the Z direction is the mounting surface, and the lower surface is the closing surface. That is, the junction box main body 3 has a plurality of fuse mounting portions on the upper surface side, and the lower surface side is covered with a lower case or the like.

A first groove portion 31 , a second groove portion 32 , a third groove portion 33 , a fourth groove portion 34 , and a second electrical connection concave portion 36 are formed on the lower surface side of the junction box body 3 . A first electrical connection recess 35 is formed on the upper surface side of the junction box main body 3 .

The first groove portion 31 is a groove portion extending along the ZX plane, and accommodates the first plate portion 21 of the bus bar 2 . The second groove portion 32 is a groove portion extending along the ZX plane, and accommodates the second plate portion 22 of the bus bar 2 . The third groove portion 33 is a groove portion extending along the YZ plane, and accommodates the third plate portion 26 of the bus bar 2 . The fourth groove portion 34 is a groove portion extending along the ZX plane, and accommodates the base end portion (the portion on the third plate portion 26 side) of the first connection plate 23 .

The first electrical connection concave portion 35 is formed so as to be continuous with the front end of the fourth groove portion 34 , and is continuous with the first groove portion 31 via the third groove portion 33 and the fourth groove portion 34 . The portion of the first connection plate 23 in which the through hole 231 is formed is accommodated in the first electrical connection recess 35 . Thereby, when the external electric wire is connected to the first connection plate 23 , the terminal fitting provided at the front end of the external electric wire, the bolt for fixing, and the nut are accommodated in the first electrical connection recess 35 .

The second electrical connection concave portion 36 is continuous with one end side in the X direction of the second groove portion 32 and accommodates the second connection plate 24 . The second electrical connection recess 36 functions as a female connector housing, and can be fitted into a male connector housing constituting an external connector.

An upright wall 311 is formed on the opposite side of the first groove portion 31 from the second groove portion 32 , and an upright wall 321 is formed on the opposite side of the second groove portion 32 from the first groove portion 31 . In the junction box main body 3 , the protruding dimension of the dividing portion 37 between the first groove portion 31 and the second groove portion 32 is smaller than the protruding dimension of the standing walls 311 and 321 . Thereby, the Z-direction lower region of the dividing portion 37 functions as a communication portion for connecting the lower ends of the first groove portion 31 and the lower end portions of the second groove portion 32 to each other, and the connecting portion 25 is disposed.

When the bus bar 2A is accommodated in the junction box main body 3 , the respective terminal portions 211 and 221 are arranged at the respective fuse mounting portions. Thereby, the fuse is attached to the fuse attachment portion, and is electrically connected to the terminal portions 211 and 221 .

According to the present embodiment as described above, there are the following effects. That is, when the 1st board part 21 and the 2nd board part 22 are separate bodies like 2nd Embodiment mentioned later, the junction box main body 3 can be made common.

[Second Embodiment]

As shown in FIG. 3 , the electrical connection box 1B of the present embodiment is a fuse box including a bus bar 2B and a junction box main body 3 . In the present embodiment, similarly to the first embodiment, the height direction of the electrical junction box 1B is the Z direction, and the two directions orthogonal to each other in the plane orthogonal to the height direction are the X direction and the Y direction.

Among the bus bars 2B, the first bus bar 20A constituted by the first plate portion 21 , the first connecting plate 23 and the third plate portion 26 and the second bus bar 20B constituted by the second plate portion 22 and the second connecting plate 24 Split composition. In addition, unlike the bus bar 2A of the first embodiment, the bus bar 2B does not have the connection portion 25 .

The first plate portion 21 has a folded portion 212 in which a part of the lower end edge (the end edge on the opening side of the first groove portion 31 , that is, the end edge on the communication portion side) is folded back toward the second plate portion 22 . The second plate portion 22 has a folded portion 222 in which a part of the lower end edge (the end edge on the opening side of the second groove portion 32 , that is, the end edge on the communication portion side) is folded back toward the first plate portion 21 . In addition, the dimension in the X direction and the dimension in the Z direction of the folded-back portions 212 and 222 may be appropriately set according to the electrical characteristics and thermal characteristics required of the bus bar 2B in the electrical connection box 1B.

In addition, the bus bar 2B in the present embodiment may be formed by appropriately processing the bus bar 2A of the first embodiment. That is, the folded portions 212 and 222 may be formed by cutting the connecting portion 25 in the bus bar 2A, and folding back a part of the connecting portion 25 that is cut and remains in each of the first plate portion 21 and the second plate portion 22 .

In the present embodiment, not only the first connection plate 23 is connected to the external electric wire, but also the terminal metal fitting of the external connector is connected to the second connection plate 24 . That is, the connector housing of the external connector is fitted into the second electrical connection recess 36 , and the terminal metal fittings of the external connector are in contact with the second connection plate 24 . Thereby, electric power is supplied to the first bus bar portion 20A through the external electric wire, and electric power is supplied to the second bus bar portion 20B through the external connector.

According to the present embodiment as described above, there are the following effects. That is, as in the first embodiment, when the first plate portion 21 and the second plate portion 22 are separate bodies, the junction box main body 3 can be made common.

In addition, by forming the folded portions 212 and 222 in the first plate portion 21 and the second plate portion 22, it is easy to satisfy the electrical characteristics and thermal characteristics required for the bus bar 2B in the electrical connection box 1B. In addition, even when the required electrical characteristics and thermal characteristics are different, it can be dealt with by adjusting the dimensions of the folded-back portions 212 and 222, and the components can be made common.

In addition, this invention is not limited to the above-mentioned embodiment, The other structure etc. which can achieve the objective of this invention are included, and the deformation|transformation etc. shown below are also included in this invention.

For example, in the above-described second embodiment, the first plate portion 21 has the folded portion 211 and the second plate portion 22 has the folded portion 22, but only one plate portion may have the folded portion, or any one of the plates may be configured. None of the parts has a folded portion, and the folded portion may be formed according to the electrical characteristics and thermal characteristics required of the bus bar.

In addition, in the above-described embodiment, the electrical connection boxes 1A and 1B are fuse boxes, but the electrical connection boxes only need to have conductive bus bars and insulating junction box main bodies, and may be junction boxes or the like. .

In addition, although the above description discloses the best structure, method, etc. for implementing this invention, this invention is not limited to this. That is, the present invention has been mainly illustrated and described with respect to specific embodiments, but the above-described embodiments can be understood by those skilled in the art without departing from the technical idea and purpose of the present invention. On the basis of , various modifications are made to the shape, material, quantity, and other detailed configurations. Therefore, the descriptions that limit the shapes, materials, etc. disclosed above are exemplary descriptions to facilitate the understanding of the present invention, and do not limit the present invention. The description of the names of all the limited parts is also included in the present invention.

Claims (4)

1. An electrical connection box, comprising:

a bus bar integrally having a first plate portion and a second plate portion or separately having a first plate portion and a second plate portion; and

a junction box body having: a first groove portion that accommodates the first plate portion; a second groove portion arranged at a spacing from the first groove portion and accommodating the second plate portion; a communicating portion that communicates one end portions of the first groove portion and the second groove portion with each other; a first electrical connection recess continuous with the first slot portion; and a second electrical connection recess continuous with the second groove.

2. The electrical connection box according to claim 1, wherein the bus bar has a coupling portion that is disposed at the communication portion and that couples the first plate portion and the second plate portion, the bus bar has at least one of a first connection portion that is connected to the first plate portion and that is disposed at the first electrical connection recess portion, and a second connection portion that is connected to the second plate portion and that is disposed at the second electrical connection recess portion.

3. The electrical connection box according to claim 1, wherein the bus bar is constituted by the first plate portion and the second plate portion being separate bodies, and the bus bar has a first connection portion that is continuous with the first plate portion and is disposed in the first electrical connection recess, and a second connection portion that is continuous with the second plate portion and is disposed in the second electrical connection recess.

4. The electrical connection box according to claim 3, wherein each of the first plate portion and the second plate portion has a folded-back portion folded back from an end edge on the side of the communication portion.

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