WO2014065200A1

WO2014065200A1 - Electrical connection box

Info

Publication number: WO2014065200A1
Application number: PCT/JP2013/078263
Authority: WO
Inventors: 健人小林; 橋倉　学
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2012-10-25
Filing date: 2013-10-18
Publication date: 2014-05-01
Also published as: JP5880971B2; JP2014087194A

Abstract

An electrical connection box (10) installed on a vehicle and arranged on a path for supplying power between a power source and a load, the electrical connection box (10) being provided with a main body case (11) having an opening part (12), a cover (32) for covering the opening part (12) of the main body case (11), a first circuit unit (21) arranged on the path for supplying power between the power source and the load and mounted on the main body case (11), and a second circuit unit (34) mounted on the cover (32). The first circuit unit (21) is provided with a first connection unit (24). The second circuit unit (34) is provided with a second connection unit (37), which is connected to the first connection unit (24) in a state in which the cover (32) is mounted on the main body case (11), and disconnected from the first connection unit (24) in a state in which the cover (32) is detached from the main body case (11). The first connection unit (24) and the second connection unit (37) being connected allows the first circuit unit (21) and the second circuit unit (34) to be electrically connected to each other and enables power to be supplied from the power source to the load.

Description

Electrical connection box

The present invention relates to an electrical connection box.

DESCRIPTION OF RELATED ART Conventionally, as an electrical connection box mounted in a vehicle, the thing of patent document 1 is known. The electrical connection box includes a box main body (main case) having an opening and a cover that closes the opening of the box main body. The bus bar inside the box body is connected to the power supply side, and power is supplied to the electronic component and the electric wire through the bus bar.

JP, 2011-15467, A

By the way, according to the above configuration, there is a concern that the user of the vehicle may forget to close the cover of the electric connection box after servicing the vehicle. In this case, water may flow into the interior of the electrical connection box from the opening of the main body case at the time of rainfall or when the vehicle is washed, which may cause a problem in the internal circuit and the like.

The present invention has been completed based on the above circumstances, and it is an object of the present invention to provide an electrical connection box capable of preventing a cover from being left closed.

The present invention is an electrical connection box mounted on a vehicle and disposed in a path for supplying power between a power source and a load, the main body case having an opening, and a cover covering the opening of the main body case. And a second circuit portion having a conductive path, the first circuit portion having a conductive path, and having a conductive path, wherein the first circuit portion has a conductive path. A first connection portion connected to the conductive path of the first circuit portion, the second circuit portion is connected to the conductive path of the second circuit portion, and the cover is assembled to the main body case A second connection portion connected to the first connection portion and disconnected from the first connection portion when the cover is removed from the main body case, the first connection portion and the second connection portion The connection between the first circuit unit and the second circuit unit causes the connection unit to be connected. Power to the load from the power source is connected it can be supplied to the.

According to this configuration, when the cover is removed from the main body case, the first connection portion connected to the conductive path of the first circuit portion and the second connection portion connected to the conductive path of the second circuit portion The power is not supplied to the load because it is not connected.
Further, when the cover is assembled to the main body case, the first connection portion connected to the conductive path of the first circuit portion is connected to the second connection portion connected to the conductive path of the second circuit portion, so that the power is transferred to the load. It is possible to supply
As a result, when the cover is removed from the main body case, power is not supplied to the load, so it is possible to easily recognize that the cover is removed from the main body case. Therefore, it becomes possible to prevent the closing forgetting to the main part case of a cover.

It is preferable to have the following configuration as an embodiment of the above configuration.
The first connection portion is held by the connector housing of the main body case to constitute a first connector, and the second connection portion is held by the connector housing of the cover to constitute a second connector; The first connection portion and the second connection portion are connected by connector fitting between the first connector and the second connector.
In this way, connection between the first connection portion and the second connection portion is facilitated.

The second circuit unit is connected to an end of an electric wire connected to the power supply or the load.
In this way, the circuit configuration can be simplified.

-The electric wire side connector is attached to the terminal part of the said electric wire, and the cover side connector to which the said electric wire side connector can be attached or detached is provided in the said cover.
In this way, the wire side can be separated from the cover as needed.

The load is a load that enables the vehicle to travel when power is supplied.
In this way, when the cover is forgotten to be closed, the vehicle can not be run, so it is possible to easily recognize that the cover has been closed.

The load is a load that allows the vehicle to travel even when power is not supplied and the vehicle is stopped.
If this arrangement is adopted, it is possible to prevent the vehicle from traveling without forgetting to close the cover to the main body case.

A notification means is provided to notify when the electric power is not supplied to the load (an electric power is not supplied and the vehicle can travel even if the vehicle is stopped).
In this way, even when power is not supplied to the load that allows the vehicle to travel, it is possible to easily recognize that the cover has not been closed to the main body case.

According to the present invention, it is possible to prevent forgetting to close the cover of the electrical connection box.

The perspective view which shows the state which removed the cover from the main body case of the electrical connection box Longitudinal sectional view showing an electrical connection box AA sectional view of FIG. 2 BB sectional view of FIG. 2 Top view showing the main body case and the first circuit portion Longitudinal sectional view showing the main body case and the first circuit portion Flat sectional view showing the cover and the second circuit portion Side view showing the cover and the second circuit portion

First Embodiment
Embodiments of the present invention will be described with reference to FIGS. 1 to 8. The electric connection box 10 according to the present embodiment is disposed in a path for supplying power between a power supply and a load in a vehicle such as an automobile not shown, and supplies power from the power supply to a load such as an on-vehicle electrical component. is there. In the following, with reference to FIG. 2 in the vertical direction, the right side of FIG. 2 will be described as the front, and the left side as the rear.

As shown in FIG. 2, the electrical connection box 10 includes a body case 11 having an opening 12, a first circuit portion 21 assembled to the body case 11, and a cover 32 covering the opening 12 of the body case 11. , And a second circuit unit 34 assembled to the cover 32.

(Body case 11)
The main body case 11 is made of synthetic resin, and has an opening 12 that opens upward. In the inside of the opening 12, a disposition portion 13 in which the first circuit portion 21 is disposed is formed.
The disposition portion 13 has a plate-like partition portion 14 partitioning the upper and lower portions of the main body case 11, and the lower side of the partition portion 14 is a housing portion 15 in which the bus bar 22 and the electric wire 43 are housed.

In the partition portion 14, as shown in FIG. 5, the first connector housing 16 in which the first connection portion 24 at one end of the bus bar 22 is accommodated, and the fixed portion 25 at the other end of the bus bar 22. It has a fixing portion 18 to be fixed, a plurality of mounting recesses 20 in which the fuse 31 is mounted, and a plurality of insertion holes 48 into which the end of the electric wire 43 connected to the cover 32 is inserted.

The mounting recess 20 is recessed so as to fit the fuse 31 as the electronic component 29 to a predetermined depth (shown schematically in FIG. 3).
The end portion of the electric wire 43 can be inserted through the insertion hole 48, and the insertion hole 48 has a rectangular shape that is long in the front-rear direction.
When the cover 32 is closed, the electric wire 43 is led out of the insertion hole 48 into the housing portion 15.

As shown in FIG. 4, the first connector housing 16 constitutes the first connector 17 which is a standby connector by holding the first connection portion 24, and a terminal for holding the first connection portion 24. A holding hole 16A and a terminal insertion hole 16B into which the second connection portion 37 side of the second connector 42 can be inserted when the connector is fitted.
The terminal holding hole 16A holds the first connection portion 24 in the hole wall by a known holding means such as press fitting.

The fixing portion 18 is a thick plate extending in the front-rear direction, and is vertically provided so as to penetrate a position apart from the first connector 17 in the dividing portion 14 by a predetermined distance to the side. To have a boss 19 for
The boss 19 is formed with a screw hole to be screwed to the shaft of the screw 27.
On the left side of the fixing portion 18, an electronic component 29 in which a large number of fuses are integrated is mounted.

(First circuit unit 21)
As shown in FIG. 5, the first circuit unit 21 includes a metal bus bar 22 that constitutes a conductive path, and a plurality of electronic components 29 connected to the conductive path.

The bus bar 22 includes an extending portion 23 extending along the plurality of fuses 31, a first connection portion 24 connected to one end of the extending portion 23 and disposed in the first connector 17, and the other of the extending portion 23 And a fixed portion 25 fixed by screwing to a fixed portion 18 provided in the arrangement portion 13.

The extension portion 23 is formed by folding a strip-shaped metal plate material in a U shape at the rear end side, and has a tuning fork shape divided into two branches connected to the terminals of the fuse 31 at predetermined predetermined intervals. It has a terminal part (not shown). The terminal of the fuse 31 is held by the terminal portion, and the bus bar 22 and the fuse 31 are electrically connected.
The other terminal of the fuse 31 is connected to a tuning fork-shaped terminal portion formed in a conductive path such as a bus bar or a wire connected to the load side.

As shown in FIG. 4, the fixing portion 25 is bent at a right angle from the end of the extending portion 23 to the fixing portion 18, and the circular through hole 26 through which the shaft portion of the screw 27 is inserted penetrates ing.
The screw 27 is passed through the through hole 26 of the fixed portion 25 and screwed to the boss 19 of the fixed portion 18, whereby the fixed portion 25 is fixed to the fixed portion 18.

The fixed portion 18 is attached with a fixed portion 25 and a terminal 28 connected to a terminal portion of an electric wire (not shown) electrically connected to a power source side such as a battery.

The bus bar 22 is formed by pressing a metal plate material into a predetermined shape. The metal which comprises the bus-bar 22 can select arbitrary metals as needed, such as copper, a copper alloy, aluminum, aluminum alloy. In the present embodiment, a plated layer (not shown) is formed on the surface of the bus bar 22 in which copper or copper alloy is used. The metal which comprises a plating layer can select arbitrary metals as needed, such as tin, zinc, nickel. In the present embodiment, tin is used.

The plurality of electronic components 29 include a plurality of switching elements 30 and a plurality of fuses 31, as shown in FIG. The fuse 31 is connected to the load via the switching element 30.
The plurality of switching elements 30 are mounted on the partition portion 14 and connected to the conductive path. As the switching element 30, an element such as a mechanical relay or a semiconductor relay can be used.

The load of the vehicle includes a first load that allows the vehicle to travel even without power supply, and a second load that enables the vehicle to travel when power is supplied to the load.
In the present embodiment, the fuse 32 of the first circuit unit 21 is connected to the first load and not connected to the second load, so that the cover 32 is removed from the main body case 11 and from the power supply. When the conductive path is disconnected, power is supplied to the first load and power is not supplied to the second load. When the cover 32 is removed from the main body case 11 by connecting the electric wire 43 connected to the cover 32 to the first load and not connecting to the second load, power is transmitted to the first load. It may be supplied and no power may be supplied to the second load.

The first load includes a light, a horn, an audio device, a car navigation system, a heater and the like.
The second load includes an engine control system load for controlling the engine. The engine control system load includes a load of an ignition system such as a cell motor.

The power supplied to the first load is detected using a known detection means such as a current sensor, and the vehicle travels even if the power is not supplied although the switch is turned on. A notification means is provided which issues an alarm when power is not supplied to the load that is possible.
Although this warning may operate the horn of the vehicle, the warning may be issued by other notification means.

(Cover 32)
The cover 32 is made of synthetic resin, and as shown in FIG. 1, the cover 32 is assembled to the main body case 11 to close the opening 12 of the main body case 11. The main body case 11 and the cover 32 are assembled by a known lock structure.
Inside the cover 32, as shown in FIG. 7, it has the semiconductor module 33 and the cover side connector 44 connected to the wire side connector 45 of the terminal part of the electric wire 43. As shown in FIG.

The semiconductor module 33 includes a second circuit portion 34 and a circuit accommodating portion 33A made of synthetic resin for accommodating the second circuit portion 34.
The circuit accommodating portion 33A has a box shape that covers substantially the entire second circuit portion 34. For example, the circuit accommodating portion 33A is configured by a plurality of divided members, and a plurality of divided members are engaged and configured. The second circuit unit 34 can be accommodated inside.

The semiconductor module 33 is fixed to the inner surface of the cover 32 by screws 46. In addition, you may make it fix the circuit accommodating part 33A to the cover 32 by not only screwing but well-known means, such as adhesion | attachment etc. Moreover, for example, a part of circuit accommodating part 33A is shape | molded integrally with the cover 32. The circuit accommodating portion 33A may be fixed to the cover 32.

(Second circuit unit 34)
The second circuit portion 34 includes the circuit board 35 on which the conductive path is printed and printed, the plurality of electronic components 36 mounted on the circuit board 35, and the first connection portion 24 when the cover 32 is assembled to the main body case 11. And a second connection portion 37 connected to the

A plurality of electronic components 36 are mounted on the circuit board 35.
The second connection portion 37 is held by the second connector housing 38, as shown in FIG. The second connection portion 37 and the second connector housing 38 constitute a second connector 42 fitted to the first connector 17.

A known means can be used to connect the first connection portion 24 and the second connection portion 37. For example, one of them may be in a known elastic contact with the other. Alternatively, one of the terminals may be connected as a female terminal and the other may be connected as a male terminal.

The second connector housing 38 is formed on the lower surface of the circuit housing 33A, and has a hood 40 opening in the fitting direction and a back wall 41 closing the hood 40.
The second connection portion 37 is formed at an end of a bus bar (not shown), and the bus bar is electrically connected to the conductive path of the circuit board 35.

The wire-side connector 45 is attached to end portions of the plurality of wires 43, as shown in FIG.
The electric wire 43 uses a coated electric wire having an insulating layer around the conductor portion, and the terminal portion of the conductor portion is connected to a terminal (not shown) by a known means such as crimping.
The wire-side connector 45 has a terminal disposed inside a hood portion which opens in a square tube shape of a synthetic resin housing.

The cover-side connector 44 is electrically connected to the conductive path of the second circuit portion 34, and the wire-side connector 45 is attachable to and detachable from the cover-side connector 44.
In the cover-side connector 44, terminals (not shown) are disposed inside a hood portion which opens in a square tube shape of a synthetic resin housing, and conductive paths of the circuit board 35 and conductive paths such as bus bars and lead wires are provided. It is electrically connected via

As a result, in a state in which the wire-side connector 45 is fitted and attached to the cover-side connector 44, the conductor portion of the wire 43 and the conductive path of the second circuit portion 34 are electrically connected.

Next, electrical connection at the time of assembly of the cover 32 to the main body case 11 will be described.
When the cover 32 is assembled to the opening 12 of the main body case 11, the first connector 17 and the second connector 42 are engaged with each other. Thereby, the first connection portion 24 inside the first connector 17 and the second connection portion 37 inside the second connector 42 are connected.

Here, the first connection portion 24 is electrically connected to the power-supply-side wire via the first circuit portion 21, and the second connection portion 37 is connected to the load-side wire 43 via the second circuit portion 34. It is electrically connected.
As a result, when the cover 32 is assembled to the main body case 11, the power can be supplied to all the loads from the power supply side, so that predetermined conditions such as engine start and operation of the load switch are satisfied. When the load works.

On the other hand, when the cover 32 is removed from the opening 12 of the main body case 11, the first connector 17 and the second connector 42 are separated, and the internal first connecting portion 24 and the second connecting portion 37 are not connected. Become.
Thus, in the state where the cover 32 is removed from the main body case 11, power is not supplied from the power supply side at least for the second load.

According to the configuration of the above embodiment, the following operations and effects can be obtained.
According to the present embodiment, in the state where the cover 32 is removed from the main body case 11, the cover 32 is connected to the conductive path of the first connection portion 24 connected to the conductive path of the first circuit portion 21 and the conductive path of the second circuit portion 34. Since the second connection portion 37 is not connected, power is not supplied to the second load.

Further, when the cover 32 is assembled to the main body case 11, the first connection portion 24 connected to the conductive path of the first circuit portion and the second connection portion 37 connected to the conductive path of the second circuit portion are connected. , Power can be supplied to the second load.

Thus, when the cover 32 is removed from the main body case 11, power is not supplied to the second load (load), so that it is possible to easily recognize that the cover 32 is removed from the main body case 11. . Therefore, it becomes possible to prevent the forgetting to close the cover 32 to the main body case 11.

Further, the first connection portion 24 is held by the connector housing of the main body case 11 to constitute the first connector 17, and the second connection portion 37 is held by the second connector housing 38 (connector housing of the cover). Since the first connector 24 and the second connector 37 are connected by the connector fitting of the first connector 17 and the second connector 42, the first connector 24 and the second connector 37 constitute the two connectors 42. Connection is easy.

Furthermore, since the second circuit unit 34 is connected to the end of the wire 43 connected to the (power supply or) load, the circuit configuration can be simplified.

In addition, the wire-side connector 45 is attached to the end of the wire 43, and the cover 32 is provided with the cover-side connector 44 to which the wire-side connector 45 can be attached and removed. It becomes possible to separate from the cover 32.

Furthermore, the load is the second load that enables the vehicle to run by being supplied with power, and the vehicle can not be run when the cover 32 is forgotten to be closed, so it is easy to forget to close the cover 32 Can be recognized.

Second Embodiment
In the first embodiment, in the state where the cover 32 is not assembled to the main body case 11, power is not supplied to the second load and power is supplied to the first load. When the main body case 11 is not assembled, the power is supplied to the second load and the power is not supplied to the first load. About the same composition as Embodiment 1, the same numerals are attached and explanation is omitted.
In the second embodiment, the fuse 31 or the electric wire 43 of the first circuit unit 21 is not connected to the first load but is connected to the second load.
The power supplied to the first load is detected using a known detection means such as a current sensor, and the vehicle travels even if the power is not supplied although the switch is turned on. A notification means is provided which issues an alarm when power is not supplied to the load that is possible.
Although this warning may operate the horn of the vehicle, the warning may be issued by other notification means.

According to the second embodiment, since the load is the first load that allows the vehicle to travel even when power is not supplied and stopped, closing of the cover 32 to the main body case 11 enables the vehicle to travel. It becomes possible to prevent forgetting.

Further, since the notification means for notifying when the power is not supplied to the first load is provided, it is easy to forget to close the cover 32 to the main body case 11 even when the power is not supplied to the first load capable of traveling the vehicle. It is possible to

Other Embodiments
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the fuse 31 is provided in the above embodiment, a fuseless circuit without the fuse 31 may be used. In the case of having a fuse, it is preferable to provide the fuse 31 in the main body case 11 as in the above embodiment in consideration of replacement, and place the fuse 31 vertically in an exchangeable manner. Since the function can be provided and the electric connection box 10 can be placed horizontally, the electric connection box 10 can be miniaturized in the height direction.

(2) In the above embodiment, when the cover 32 is not assembled to the main body case 11, power is not supplied to one of the first load and the second load, and power is supplied to the other of the first load and the second load. However, the present invention is not limited to this. In the state where the cover 32 is not assembled to the main body case 11, power may not be supplied to both the first load and the second load.

(3) Although the cover 32 has a configuration in which the end portion of the electric wire 43 is attached in the above embodiment, the present invention is not limited thereto. For example, if the first connection portion 24 and the second connection portion 37 are provided as a pair to supply power between the first circuit portion 21 and the second circuit portion 34, the end of the electric wire 43 on the cover 32 It is also possible to have a configuration in which the part is not attached.

(4) In the above-described embodiment, the first circuit unit 21 is connected to the power supply side. However, the second circuit unit 34 (electric wire 43 connected thereto) may be connected to the power supply side.

DESCRIPTION OF SYMBOLS 10 Electrical connection box 11 Body case 12 Opening 13 Arrangement part 14 Partition part 16 First connector housing 17 First connector 18 Fixing part 21 First circuit part 22 Bus bar 23 Extension Section 24 first connection section 25 fixed section 29 electronic component 30 switching element 31 fuse 32 cover 33 semiconductor module 34 second circuit section 35 circuit board 36 electronic component 37 second connection section 38 ... second connector housing 42 ... second connector 43 ... electric wire 44 ... cover side connector 45 ... electric wire side connector 46 ... screw

Claims

An electrical junction box mounted on a vehicle and disposed in a path for supplying power between a power supply and a load,
A body case having an opening,
A cover covering the opening of the main body case;
A first circuit portion having a conductive path and assembled to the main body case;
And a second circuit unit having a conductive path and assembled to the cover,
The first circuit unit includes a first connection unit connected to the conductive path of the first circuit unit.
The second circuit portion is connected to the conductive path of the second circuit portion, and is connected to the first connection portion in a state where the cover is assembled to the main body case, and the cover is connected from the main body case It has a second connection part which is disconnected from the first connection part in a disconnected state,
By connecting the first connection portion and the second connection portion, the first circuit portion and the second circuit portion are electrically connected, and power can be supplied from the power supply to the load. Electrical connection box.
The first connection portion is held by the connector housing of the main body case to constitute a first connector, and the second connection portion is held by the connector housing of the cover to constitute a second connector; The electrical connection box according to claim 1, wherein the first connection portion and the second connection portion are connected by connector fitting of the connector and the second connector.
The electrical connection box according to claim 1 or 2, wherein the second circuit unit is connected to an end of an electric wire connected to the power source or the load.
The electrical connection box according to claim 3, wherein a wire-side connector is attached to a terminal portion of the wire, and the cover is provided with a cover-side connector to which the wire-side connector can be attached and detached.
The electrical connection box according to any one of claims 1 to 4, wherein the load is a load that enables the vehicle to travel by being supplied with electric power.
The electric connection box according to any one of claims 1 to 4, wherein the load is a load capable of running a vehicle even when the load is not supplied with power and is stopped.
The electrical connection box according to claim 6, further comprising notification means for notifying when the power is not supplied to the load.