JP2001204126A - Electrical connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connection box which reduces cost required for manufacturing facilities and suppresses reduction of production efficiency. SOLUTION: The electrical connection box 1 is provided with a case, and a wiring board, etc., to be put in this case. The case is provided with a front case 11. Onto the surface 11a of the front case 11, a plurality of standard fuse attaching parts 14, a dark current fuse attaching part 15, and an extended fuse attaching part 16 are fitted. Standard fuses 31 are attachable to or detachable from the standard part 14 freely. A dark current fuse 34 is attachable to or detachable from the current part 15. An extended fuse is attachable to or detachable from the extended part 16 freely. The standard part 14 and the current part 15 are arranged side by side mutually along line segment L. The extended part 16 is arranged at an interval from line segment L.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box mounted on an automobile or the like as a moving body.

[0002]

2. Description of the Related Art In general, a vehicle as a moving body is equipped with various kinds of electronic devices as loads such as lamps such as a head lamp and a tail lamp, and motors such as a starter motor and a motor for an air conditioner. Have been.

Some of these electronic devices are supplied with current from a power source such as a battery when the automobile is turned off. Hereinafter, a current supplied from a battery or the like when the ignition is turned off is referred to as a dark current, and a load supplied with the dark current is referred to as a dark current load. Further, a load to which a current is supplied when the ignition is turned on is hereinafter simply referred to as a load.

In order to supply power to a variety of electronic devices such as the above-described load and dark current load, a junction block has been arranged at an appropriate place in an automobile. The junction block is configured by laminating wiring boards provided with a printed circuit board, a bus bar, and the like, and integrating various electric circuit units such as a large number of fuses and relays on these wiring boards.

[0005] Since the junction block may include a fuse, a relay, a bus bar, or the like, the junction block is also called a fuse block, a relay box, or an electric connection box. In the present specification, the above-described fuse block, relay box, and junction block are hereinafter collectively referred to as an electric connection box.

[0006] The electric connection box includes a case and the above-described wiring board accommodated in the case. The case includes a back case and a front case that are detachable from each other. The front case is provided with a plurality of standard fuse mounting portions, at least one or more dark current fuse mounting portions, and a mounting portion to which the above-described relays and connectors can be mounted.

A standard fuse is detachable from the standard fuse mounting portion. The standard fuse cuts off current supply to the load when an excessive current is supplied to the load. The dark current fuse is detachable from the dark current fuse mounting portion. When a dark current fuse attempts to supply an excessive dark current to the dark current load,
Cut off the supply of dark current.

Further, a load different from the above-described load such as a navigation device or a dark current load after being shipped from a factory or the like may be mounted on the automobile as optional equipment. A load mounted as this type of optional equipment is hereinafter referred to as an extended load.

For this reason, at least one or more extended fuse mounting portions are conventionally provided on the front case of the electric junction box. The extension fuse is detachable from the extension fuse mounting portion. The extension fuse cuts off the supply of current to the extension load when an excessive current is supplied to the extension load. The extension fuse mounting part is
In a state where the extension load is not mounted on the vehicle, that is, when the vehicle is shipped from a factory, the extension fuse is not mounted and is empty.

[0010]

Conventionally, the electric junction box provided with the standard fuse mounting portion, the dark current fuse mounting portion, and the extended fuse mounting portion described above has a plurality of standard fuse mounting portions on the outer wall surface of the front case. And the extended fuse mounting portion are arranged side by side in one direction, and the dark current fuse mounting portion is spaced from the direction in which the standard fuse mounting portion and the extended fuse mounting portion are arranged side by side. It is provided in the position where it did.

In the place where the standard fuse mounting portion and the extended fuse mounting portion are juxtaposed, a mounting portion to which a standard fuse is mounted and an empty mounting portion to which no fuse is mounted are mixed.

For this reason, when mounting various types of fuses, that is, when assembling the electrical junction box, it is necessary to identify an empty mounting portion, that is, an extended fuse mounting portion. It takes a long time to install it on a line or to identify it. Therefore, the cost of the manufacturing equipment has risen and the production efficiency has tended to decrease.

Further, the dark current fuse mounting portion is provided with an interval in a direction in which the standard fuse mounting portion and the extended fuse mounting portion are arranged side by side. Therefore, the trajectory of the robot arm for mounting each fuse in the standard fuse mounting portion and the extended fuse mounting portion is widened, and the time required for mounting each fuse is lengthened. Had a tendency. For this reason, the production efficiency has tended to worsen further. Further, since the driving trajectory of the robot arm described above is widened, the cost of manufacturing equipment has tended to further increase.

Accordingly, it is an object of the present invention to provide an electric junction box which can suppress a rise in cost of production equipment and a decrease in production efficiency.

[0015]

According to a first aspect of the present invention, there is provided an electric connection box provided on a case and an outer wall surface of the case and adapted to load. When a current is to flow, a standard fuse for interrupting the current is detachably attached to a standard fuse mounting portion, and an excessive dark current is likely to flow to a dark current load provided on an outer wall surface of the case and supplied with a dark current. Then, a dark current fuse for interrupting the dark current is provided with a removable dark current fuse mounting portion, and an electrical junction box mounted on the moving body,
The standard fuse mounting portion and the dark current fuse mounting portion are arranged side by side in one direction on the outer wall surface of the case.

[0016] The electric junction box according to the second aspect of the present invention comprises:
2. The electric junction box according to claim 1, wherein the moving body can be equipped with an extension load different from the load and the dark current load, and is provided on an outer wall surface of the case and an overcurrent may flow through the extension load. In this case, an extension fuse for interrupting the flow of current to the extension load is provided with a detachable extension fuse attachment portion, and the extension fuse attachment portion is arranged in such a direction that the standard fuse attachment portion and the dark current fuse attachment portion are arranged side by side with each other. That is, it is characterized in that it is provided at a position spaced from the one direction.

According to the first aspect of the present invention, at the time of shipment from a factory, a standard fuse mounting portion to which a fuse is mounted and a dark current fuse mounting portion are arranged side by side in one direction. ing. For this reason, it is possible to suppress the drive locus of a robot arm or the like that attaches a fuse to each of the standard fuse attachment section and the dark current fuse attachment section, and to attach a fuse attachment section and a fuse-free attachment section. There is no need to provide an identification means for identifying the unit.

According to the electrical junction box of the present invention, the extended fuse mounting portion is provided with an interval in the direction in which the standard fuse mounting portion and the dark current fuse mounting portion are arranged side by side. I have. For this reason, the drive trajectory of a robot arm or the like to which each fuse is mounted can be more reliably suppressed and a discriminating means for identifying a mounting portion to which a fuse is mounted and a mounting portion to which a fuse is not mounted is provided. The need is less certain.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric junction box according to an embodiment of the present invention will be described below with reference to FIGS. The electric junction box 1 according to the present embodiment is mounted on an automobile as a moving body. The electric connection box 1 is, as shown in FIG.
The case 2 includes a box-shaped case 2, a waterproof case 3, a wiring board 4, and a lower cover 5.

The case 2 comprises a back case 10 and a front case 1
And 1. The back case 10 has a flat bottom wall 12.
And a plurality of peripheral walls 13 connected to the peripheral edge of the bottom wall 12, and are formed in a box shape. The bottom wall 12 has a rectangular planar shape. The bottom wall 12 is provided with a plurality of connectors (not shown). Wires connected to various loads, such as the above-described load and dark current load, and a power source such as a battery, are electrically connected to each terminal of these connectors.

The front case 11 is formed in a flat plate shape. The front case 11 is housed in the back case 10 with a space from the bottom wall 12. As shown in FIGS. 2 and 3, the front case 11 has a plurality of standard fuse mounting portions 14 and a dark current A plurality of mounting portions 1 to which a fuse mounting portion 15, an extended fuse mounting portion 16, and a relay and a connector can be mounted respectively.
7 are provided. In addition, the said surface 11a has comprised the outer wall surface described in this specification.

Each of the standard fuse mounting portions 14 has
A pair of terminals (not shown) is provided. A load to which a current is supplied when the ignition switch is turned on is connected to one of the pair of terminals. On the other hand, a power source such as a battery is connected.

As shown in FIG. 3, a standard fuse 31 is detachable from the standard fuse mounting portion 14. The standard fuse 31 includes a case 32 made of synthetic resin, a pair of blade-shaped connection portions 33 each having one end housed in the case 32, and the blade-shaped connection portions 33 connected to each other in the case 32. And a fusible body.

Each of the blade-like connecting portions 33 is connected to a terminal of the standard fuse mounting portion 14. When the blade-shaped connecting portion 33 is connected to the terminal of the standard fuse mounting portion 14,
A power supply and a load are connected, and power is supplied to the load. When the current value of the power supplied from one of the blade-shaped connection portions 33 or the like, that is, the current value of the power supplied to the load exceeds a predetermined value, the fusible member is blown and cut off the supply of the power. I do.

That is, the standard fuse 31 cuts off the supply of the current to the load when an excessive current, that is, an overcurrent is supplied to the load.

Each of the dark current fuse mounting portions 15 is provided with a pair of terminals (not shown). One of these terminals is connected to a dark current load to which current is supplied when the ignition switch is off. On the other hand, a power source such as a battery is connected.

As shown in FIG. 3, a dark current fuse 34 is detachable from the dark current fuse mounting portion 15. As can be seen from the perspective view shown in FIG. 3, the dark current fuse 34 is formed in substantially the same shape as the standard fuse 31. The dark current fuse 34 includes a case 35 made of a synthetic resin, a pair of blade-shaped connection portions 36 each having one end housed in the case 35, and the blade-shaped connection portions 36 connected to each other in the case 35. And not soluble.

The blade-like connecting portions 36 are respectively connected to the terminals of the dark current fuse mounting portion 15. When the blade-shaped connection portion 36 is connected to the terminal of the dark current fuse mounting portion 15, the power supply and the dark current load are connected, and power is supplied to the dark current. When the current value of the power supplied from one of the blade-shaped connecting portions 36 or the like, that is, the current value of the power supplied to the dark current load exceeds a predetermined value, the fusible member is blown to cut off the supply of the power. Cut off.

That is, the dark current fuse 34 cuts off the supply of the dark current to the dark current load when an excessive dark current is to be supplied to the dark current load. In the illustrated example, only one dark current fuse mounting part 15 is provided.
The standard fuse 31 and the dark current fuse 34 are mounted on the mounting portions 14 and 15 at the time of factory shipment.

The extended fuse mounting section 16 is provided with a pair of terminals (not shown). An extended load mounted on an automobile is connected to one of the pair of terminals via the wiring board 4 or the like at the request of an occupant such as a navigation device. On the other hand, a power source such as a battery is connected. The extended load is different from the load and the dark current load, and is mounted on the automobile as optional equipment according to a request from a passenger or the like.

An extension fuse (not shown) is detachably attached to the extension fuse mounting portion 16. The extended fuse is formed in substantially the same shape as the standard fuse 31 and the dark current fuse 34. The extension fuse cuts off current supply to the extension load when an excessive current is supplied to the extension load. In addition, the extended fuse mounting portion 16
Are provided in the illustrated example.

The center position of the pair of terminals of the standard fuse mounting portion 14 and the center position of the pair of terminals of the dark current fuse mounting portion 15 are connected to each other and are shown by dashed lines in FIGS. The standard fuse mounting portion 14 and the dark current fuse mounting portion 15 are arranged such that the line segment L is a straight line along one direction. Note that the line segment L forms one direction described in this specification.

That is, the line segment L is connected to the center position between the pair of blade-shaped connecting portions 33 of the standard fuse 31 mounted on the standard fuse mounting portion 14 and to the dark current fuse mounting portion 15. It is formed by connecting the center position between the pair of blade-shaped connection portions 36 of the dark current fuse 34 in the set state to each other, and is a straight line along one direction.

As described above, the plurality of standard fuse mounting portions 14 and the dark current fuse mounting portions 15 are arranged side by side in one direction. In the illustrated example, the plurality of standard fuse mounting portions 14 and the dark current fuse mounting portions 15 are arranged side by side along the longitudinal direction of the front case 11. The dark current fuse mounting portion 15 is provided so as to be positioned closest to the peripheral wall 13 of the back case 10 when the front case 11 is accommodated in the back case 10.

The extended fuse mounting portion 16 is provided such that the center position between the pair of terminals is spaced from the line segment L. As described above, the extended fuse mounting portion 16 is provided at a position spaced from the line segment L.

The waterproof case 3 is formed in a box shape with a flat ceiling wall 18 and a plurality of peripheral walls 19 connected to the periphery of the ceiling wall 18. The waterproof case 3 has a peripheral wall 1
9 is detachably attached to the edge of the peripheral wall 13 of the back case 10. The waterproof case 3 covers the front case 11 together with the back case 10 when attached to the edge of the peripheral wall 13.

The wiring board 4 is disposed between the bottom wall 12 of the back case 10 and the front case 11 and housed in the back case 10. The wiring board 4 includes a plurality of insulating substrates 21 stacked on each other along a direction in which the bottom wall 12 and the front case 11 come in contact with and separate from each other, and a plurality of bus bars (not shown) provided between the insulating substrates 21. And

The insulating substrates 21 are each made of a material such as a synthetic resin having an insulating property. The bus bars are each formed of a material such as a metal having conductivity. The bus bar includes a plurality of tab portions 22a protruding toward the front case 11.

The tab portions 22a are respectively provided on the bottom wall 12
And the fuses 31, 34 and the mounting portion 17 mounted on the mounting portions 14 and 15, respectively.
Connect to relays and connectors mounted on The relays and connectors mounted on the fuses 31 and 34 and the mounting portion 17 and the terminals of the connector mounted on the back case 10 are connected to each other according to a predetermined pattern. The tab portion 22a penetrates the insulating substrate 21.

The lower cover 5 includes a bottom wall 23 and the bottom wall 23.
And a plurality of peripheral walls 24 connected to the peripheral edge of the peripheral wall. The peripheral wall 24 is the bottom wall 12 of each of the peripheral walls 13 of the back case 10.
The lower cover 5 is attached to the case 2 by being attached to the closer edge.

According to the present embodiment, the standard fuse mounting section 14 to which the fuses 31 and 34 are mounted at the time of factory shipment, and the dark current fuse mounting section 15 are arranged side by side along the line L. For this reason, the standard fuse mounting portion 14
And the dark current fuse mounting section 15 with a fuse 3
The driving trajectory of a manufacturing device such as a robot arm to which the first and the third robots 34 are mounted can be suppressed to be narrow. Therefore, the time required for mounting the fuses 31 and 34 can be suppressed.

When the fuses 31 and 34 are mounted, the mounting portions 14 and 15 can be sequentially formed while moving the robot arm and the like along the line L. Therefore, fuse 3
There is no need to provide an identification means for distinguishing between the mounting portions 14 and 15 and the extended fuse mounting portion 16 when the mounting portions 1 and 34 are mounted. Therefore, it is possible to reduce the cost of the manufacturing equipment and the time required to identify the mounting units 14 and 15.

Therefore, the electric connection box 1 of the present embodiment
It is possible to suppress a rise in cost of production equipment and a decrease in production efficiency.

Further, the extended fuse mounting section 16 is provided at a position spaced from a line segment L in which the standard fuse mounting section 14 and the dark current fuse mounting section 15 are arranged side by side. For this reason, the drive locus of the robot arm or the like on which the respective fuses 31 and 34 are mounted can be more reliably suppressed.

Further, it is not necessary to provide an identification means for distinguishing between the mounting sections 14 and 15 for mounting the fuses 31 and 34 at the time of factory shipment and the expansion fuse mounting section 16 for not mounting the extended fuse. Therefore, it is possible to more reliably suppress a rise in cost of the manufacturing equipment and a decrease in production efficiency.

[0046]

As described above, according to the first aspect of the present invention, the driving locus of a robot arm or the like for mounting a fuse on each of the standard fuse mounting section and the dark current fuse mounting section is determined. It can be kept narrow. For this reason,
The time required to mount each fuse can be suppressed.

Further, since there is no need to provide an identification means for distinguishing between the mounting portion where the fuse is mounted and the mounting portion where the fuse is not mounted, it is possible to reduce the cost of the manufacturing equipment and to identify the mounting portion. The required time can be suppressed.

Therefore, it is possible to suppress a rise in the cost of the manufacturing equipment and a decrease in the production efficiency.

According to the second aspect of the present invention, the extended fuse mounting portion is arranged with an interval in the direction in which the standard fuse mounting portion and the dark current fuse mounting portion are juxtaposed. For this reason, the drive trajectory of a robot arm or the like to which each fuse is mounted can be more reliably suppressed and a discriminating means for identifying a mounting portion to which a fuse is mounted and a mounting portion to which a fuse is not mounted is provided. The need is less certain. Therefore, it is possible to more reliably suppress a rise in cost of the manufacturing equipment and a decrease in production efficiency.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an electric junction box according to an embodiment of the present invention.

FIG. 2 is a plan view showing a front case of the electric junction box of the embodiment.

FIG. 3 is a perspective view showing a main part of the electric connection box of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrical connection box 2 Case 11a Surface (outer wall surface) 14 Standard fuse mounting part 15 Dark current fuse mounting part 16 Extended fuse mounting part 31 Standard fuse 34 Dark current fuse L Line segment (one direction)

Claims (2)

[Claims] 1. A case, a standard fuse mounting portion provided on an outer wall surface of the case, and a standard fuse for cutting off the current when an overcurrent flows to a load is detachable, provided on an outer wall surface of the case. A dark current fuse that cuts off the dark current when an excessive dark current flows in the dark current load to which the dark current is supplied, and a dark current fuse mounting portion that is detachable and is mounted on the moving body. The electrical junction box, wherein the standard fuse mounting portion and the dark current fuse mounting portion are arranged side by side in one direction on an outer wall surface of the case. 2. The moving body is capable of mounting an extended load different from the load and the dark current load, and is provided on an outer wall surface of the case and is configured to be extended when an overcurrent flows through the extended load. An extended fuse mounting part for detachably mounting an extended fuse for interrupting the flow of current to a load is provided, and the extended fuse mounting part is spaced in a direction in which the standard fuse mounting part and the dark current fuse mounting part are arranged side by side. 2. The electric junction box according to claim 1, wherein the electric junction box is provided at a position where the electric connection exists.