JPH0564339A - Electric connection box - Google Patents

Abstract

PURPOSE:To provide a small-sized electric connection box excellent in heat radiation property and reliability. CONSTITUTION:Both ends of a bus bar 11 are bent upward to form terminals 13 with which the terminals 2a of an electric part can be connected through relay terminals 12. A heat radiation part 14 is attached vertically to one side of the bus bar 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box mounted on an automobile or the like, and more particularly to an electric connection box which is excellent in heat dissipation and has a small size.

[0002]

2. Description of the Related Art An electric system such as an automobile is provided with an electric connection box on which electric parts such as fuses and relays are mounted. As shown in FIG. 10, this electrical junction box has an upper case 1 in which electrical components 2, 2 such as the fuse and the relay are provided.
A mounting portion 3 for mounting is formed. A plurality of insulating plates 4 and 4 are provided inside the electric junction box,
The plurality of bus bars 5, 5 are insulated by these insulating plates 4, 4 and are wired in a plurality of stages. These bus bars 5, 5 are
The metal plate is punched and bent to form a predetermined shape, and the terminals of the electric components 2 and 2 mounted on the mounting portion 3 are formed by bending the bus bars 5 and 5. 6 and 6 are connected and wired. Reference numeral 7 is a lower case. Further, as the circuit becomes complicated, the terminal portions 6 and 6 of the bus bars 5 and 5 as shown in FIG. 11 are connected by the connecting piece 8 (see FIG. 12) so that a plurality of electrical components can be branched and connected. Has been done.

[0003]

When electric current is supplied to the electric component 2 connected to the terminal portion 6 of the bus bar 5, the electric component 2 generates heat, so that the area of the bus bar 5 is increased. Although it is necessary to have a heat dissipation function, in the above-mentioned bus bar 5, there is a problem that if the area of the bus bar 5 is increased, the space in the plane direction of the electric junction box is increased and the electric junction box becomes large. there were. Also,
In the above-mentioned bus bar 5, the terminal portions 6 are connected to each other by the connecting pieces 8 in order to cope with a complicated branch circuit. However, there is a possibility that connection failure may occur due to the increase of such connecting points. There is a problem that the cost becomes high and the reliability is lowered. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric junction box which is excellent in heat dissipation effect and reliability and can be downsized.

[0004]

The electric connection box of the first invention is an electric connection box provided in an automobile or the like, in which each electric component is wired by a bus bar, wherein the bus bar has:
It is characterized in that a heat radiation portion bent upward is formed on at least one side portion thereof. An electric connection box according to a second aspect of the present invention is provided in an automobile or the like, in which each electric component is wired by a bus bar, wherein the bus bar has a flat surface vertically installed on one side thereof, It is characterized in that a bus bar portion having a plurality of terminal portions connectable to the terminals of the electric components is integrally formed on the upper portion. The electric connection box of the third invention is provided in an automobile or the like, and the electric parts are wired by a bus bar. In the electric connection box, flat surfaces are vertically installed on both sides of the bus bar. In addition, a bus bar portion having a plurality of terminal portions connectable with the terminals of the electric components is integrally formed. An electric connection box of a fourth invention is provided in an automobile or the like, and an electric connection box in which each electric component is wired by a bus bar, wherein the bus bar is formed by folding back a metal plate, and a terminal of each electric component is provided on an upper portion. It is characterized in that the lower end portions of a pair of bus bar portions in which a plurality of terminal portions connectable with are formed are integrally connected.

[0005]

According to the electric junction box of the first invention, the heat generated from the electric parts is transferred to the bus bar and dissipated from the bus bar and the heat radiating portion formed on the side portion of the bus bar. According to the electric connection box of the second invention, by connecting the terminals of the electric component to the terminal portion of the bus bar portion integrally formed on one side, one bus bar can branch and connect many electric components. Therefore, the number of connection points between the bus bars is reduced. According to the electric connection box of the third invention, by connecting the terminals of the electric component to the terminal portions of the bus bar portion formed integrally on both sides,
A single bus bar can branch and connect many electrical components, reducing the number of connection points between the bus bars. According to the electrical junction box of the fourth invention, the busbar is formed in a shape in which the lower end portions of the busbar portions are integrally connected, and the area occupied by the busbar in the plane direction is reduced, so that the space in the plane direction is reduced. It is effectively used.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. In the figure, reference numeral 11 is a bus bar wired in the electrical junction box. The bus bar 11 has a terminal 2a of the electric component 2 and a relay terminal 1 at both ends thereof.
Terminal portions 13, 13 connectable via 2 are formed. By connecting the terminal 2a of the electric component 2 to the terminal portions 13 and 13 via the relay terminal 12, the terminals 2a of the electric components 2 are connected in a conductive state and wired. There is. Also, this bus bar 1
A heat dissipation portion 14 that is bent upward is formed on one side of 1.

Here, the above-mentioned bus bar 11 is shown in FIG.
By bending the points shown by the broken line of the metal plate punched into the shape as shown in the respective directions in the same direction,
Bus bar 1 in which terminal portions 13 and 13 and heat dissipation portion 14 are formed
1 can be manufactured very easily. In addition, in FIG. 3, reference numeral 21 is a bus bar in which the heat radiating portion 14 is formed on both sides, and when manufacturing this bus bar 21, punching into a shape as shown in FIG. The bus bar 21 having the terminal portions 13 and 13 and the heat radiating portions 14 and 14 can be extremely easily manufactured by bending the portions of the processed metal plate indicated by the broken lines in the same direction.

According to the electrical connection box in which the bus bars 11 and 21 having the above-described shapes are wired, the terminals 2 are connected to the respective terminal portions 13 and 13 of the bus bars 11 and 21 via the relay terminal 12.
When heat is generated from the electric component 2 to which a is connected, this heat is transferred to the bus bars 11 and 21, and further transferred to and dissipated to the heat dissipation portion 14 formed on the side of the bus bars 11 and 21. Therefore, it is possible to obtain an electric junction box having an extremely excellent heat dissipation effect. In addition, the heat dissipation portion 1 of the bus bars 11 and 21
Since 4 is formed in a shape that is bent upward and does not occupy much space in the plane direction, the space in the plane direction of the electrical junction box can be effectively used and the enlargement of the electrical junction box can be prevented. You can

Next, a second embodiment will be described. In FIG. 5, reference numeral 31 is a bus bar arranged in the electrical junction box. On one side of the bus bar 31, there is integrally formed a bus bar portion 32 whose plane is vertically installed. The plurality of terminal portions 1 are also provided on the upper end portion of the bus bar portion 32.
3 and 13 are formed, and the terminal 2 a of the electric component 2 is connected to the terminal portions 13 and 13 via the relay terminal 12. Here, the bus bar 31 as described above can be extremely easily manufactured by bending the portion shown by the broken line of the metal plate punched into the shape as shown in FIG.

According to the electric connection box in which the bus bar 31 having the above-described shape is wired, the bus bar portion 32 is integrally formed on one side portion of the bus bar 31 with the plane vertically installed. Since a plurality of terminal portions 13 and 13 to which the terminal 2a of the electric component 2 can be connected via the relay terminal 12 are formed at the upper end portion of the electric component 2, one bus bar 31 can connect many electric components 2 and 2 in a branched manner. This makes it possible to reduce the number of connection points between the bus bars. As a result, it is possible to prevent a conduction failure that may occur at the connection point between the bus bars, and it is possible to provide an extremely reliable electrical junction box. Moreover, since many electric components 2 and 2 can be branched and connected by one bus bar 31, the electric junction box itself can be miniaturized. Further, according to this bus bar 31, since the bus bar portion 32 is formed on one side, the entire surface area is increased, so that the heat of the electric components 2 and 2 transferred to the bus bar 31 is extremely good. It is possible to dissipate the heat in the electric connection box, and further it is possible to obtain an electric junction box having an excellent heat dissipation effect.

Next, a third embodiment will be described. In FIG. 7, reference numeral 41 is a bus bar arranged in the electric junction box. On both sides of the bus bar 41, bus bar portions 42, 42 whose planes are vertically installed are integrally formed.
A plurality of terminal portions 13, 13 are also formed on the upper end portions of the bus bar portions 42, 42.
The terminal 2 a of the electric component 2 is also connected to the terminal 13 via the relay terminal 12. Here, the bus bar 41 as described above is formed by bending a portion shown by a broken line of a metal plate punched into a shape as shown in FIG.
It can be manufactured very easily.

According to the electric connection box in which the bus bar 41 having the above-described shape is wired, the bus bar parts 42, 42 are integrally formed on both sides of the bus bar 41 by installing the planes vertically. Since a plurality of terminal portions 13 and 13 to which the terminal 2a of the electric component 2 can be connected via the relay terminal 12 are formed at the upper end portions of the 42 and 42, one bus bar 41
As a result, more branching connections of the electric components 2 and 2 than in the bus bar 31 of the second embodiment are possible, the number of connection points between the bus bars can be extremely reduced, and further, the reliability and size are reduced. It can be an electrical junction box. In addition, the bus bar 41 includes a bus bar section 4
Since 2, 42 are formed at both ends, it is possible to obtain an electric junction box having an excellent heat dissipation effect.

A fourth embodiment will be described with reference to FIG. In the figure, reference numeral 51 is a bus bar arranged in the electrical junction box. The bus bar 51 has a plurality of terminal portions 1 on the top by folding back a punched metal plate.
The lower end portions of the bus bar portions 52, 52 on which the electrodes 3, 3 are formed are integrally formed. And
By forming the bus bar 51 as described above, the area occupied by the bus bar 51 in the planar direction can be reduced. That is, this bus bar 51 has many electric components 2, 2
In addition to the branch connection, it is possible to effectively use the space in the plane direction. This allows
A highly reliable and excellent heat dissipation effect, and a miniaturized electrical junction box can be provided.

In the above embodiment, the bus bars 11 and 2 are used.
The relay terminal 12 includes the terminal portion 13 formed on the terminals 1, 31, 41, and 51 and the terminal 2a of the electric component 2 mounted on the mounting portion 3.
However, if the terminal 2a of the electric component 2 is a female terminal, it is of course directly connected without using the relay terminal 12. In addition, the bus bars 11 and 2 of the above embodiment
The specific shapes of 1, 31, 41 and 51 are not limited to the examples.

[0015]

As described above, according to the electric junction box of the present invention, the following effects can be obtained. According to the electric connection box of the first invention, the heat generated from the electric parts connected to the bus bar is transferred to the bus bar, and is transferred to the heat dissipation portion formed on at least one side of the bus bar to be dissipated. It is possible to obtain an electric junction box having an extremely excellent heat dissipation effect. In addition, since the heat radiating portion of the bus bar is bent upward and formed in a shape that does not take up much space in the plane direction, the space in the plane direction of the electric connection box can be effectively used, and the heat dissipation effect is excellent and It can be a miniaturized electrical junction box. According to the electrical connection box of the second invention, the busbar portion is integrally formed on one side portion of the busbar with the plane vertically installed, and a plurality of electric components connectable to the upper end portion of the busbar portion. Since the terminal part is formed,
One bus bar enables branch connection of many electric components, and the number of connection points between the bus bars can be reduced. As a result, it is possible to prevent defective conduction that may occur at the connection points between the bus bars, and it is possible to obtain an extremely reliable electrical junction box. Also, since a large number of electric components can be branched and connected by one bus bar, the electric junction box itself can be downsized. Furthermore, since the entire surface area is increased by forming the bus bar portion on one side, it is possible to dissipate the heat of the transferred electric components very well, and extremely,
It is possible to provide an electrical junction box with excellent heat dissipation effect.

According to the electric connection box of the third invention, the bus bar portions are integrally formed on both sides of the bus bar with the planes vertically installed, and the electric parts can be connected to the upper end portions of these bus bar portions. Since multiple terminal parts are formed, it is possible to branch and connect more electrical parts with one bus bar, the number of connection points between bus bars can be extremely reduced, and further, high reliability and downsizing can be achieved. It can be an electrical junction box. In addition, since the bus bar portions are formed at both ends, the electric connection box having a better heat dissipation effect can be obtained. According to the electrical junction box of the fourth invention,
The bus bar is formed in a shape in which the lower ends of the bus bar parts are integrally connected, and the area occupied by the bus bar in the planar direction is small, so the reliability is high and the heat dissipation effect is excellent. It can be a box.

[Brief description of drawings]

FIG. 1 is a perspective view of a bus bar, a terminal of an electric component, and a relay terminal for explaining a shape of a bus bar used in an electric junction box according to a first embodiment of the present invention.

FIG. 2 is a development view of the bus bar, illustrating a manufacturing process of the bus bar.

FIG. 3 is a perspective view of another shape of the bus bar used in the electrical junction box of the first embodiment, which is a bus bar, a terminal of an electric component, and a relay terminal.

FIG. 4 is a development view of the bus bar for explaining the manufacturing process of the bus bar.

FIG. 5 is a perspective view of a bus bar for explaining the shape of the bus bar used in the electric connection box of the second embodiment.

FIG. 6 is a development view of a bus bar for explaining a manufacturing process of the bus bar used in the electrical junction box of the second embodiment.

FIG. 7 is a perspective view of a bus bar for explaining the shape of the bus bar used in the electrical junction box of the third embodiment.

FIG. 8 is a development view of the bus bar for explaining a manufacturing process of the bus bar used in the electrical junction box of the third embodiment.

FIG. 9 is a perspective view of a bus bar for explaining the shape of the bus bar used in the electrical junction box of the fourth embodiment.

FIG. 10 is an exploded perspective view of an electric connection box for explaining the internal structure of a conventional electric connection box.

FIG. 11 is a perspective view of a bus bar and a connection piece for explaining a method of connecting the bus bars wired inside the conventional electric connection box.

FIG. 12 is a perspective view of a connection point between bus bars for explaining a state where the bus bars wired inside the conventional electric junction box are connected to each other.

[Explanation of symbols]

2 ... Electrical parts, 2a ... Terminals 11,21,31,4
1, 51 ...... bus bar, 13 ...... terminal part, 14 ...... heat dissipation part, 32, 42, 52 ...... bus bar part

Claims (4)

[Claims] 1. A bus bar (11, 2) provided on an automobile or the like.
In the electric connection box in which the electric components (2) are wired according to 1), the bus bar has a heat radiating portion (14) bent upward at least on one side thereof. Electrical junction box. 2. An electric connection box provided in a vehicle or the like, in which each electric component (2) is wired by a bus bar (31), wherein the bus bar has a plane vertically installed on one side thereof. An electric junction box, which is integrally formed with a bus bar portion (32) having a plurality of terminal portions (13) connectable to the terminals (2a) of the electric parts. 3. An electric connection box which is provided in an automobile or the like and in which each electric component (2) is wired by a bus bar (41), wherein the bus bar has flat surfaces vertically installed on both sides thereof, An electric junction box, wherein a bus bar portion (42) having a plurality of terminal portions (13) connectable to the terminals (2a) of the respective electric components is integrally formed on the upper portion. 4. An electric connection box, which is provided in an automobile or the like and in which each electric component (2) is wired by a bus bar (41), the bus bar is formed by folding a metal plate.
A pair of bus bar parts (24) on the upper part of which a plurality of terminal parts (13) connectable to the terminals (2a) of the electric parts are formed.
An electrical junction box, wherein the lower end portion of the is formed in a shape integrally connected.