JPH11164448A - Electrical junction box - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To be able to secure the stability at the time of assembling work, to protect the connector during transportation or at the time of attachment to a vehicle, and to reduce the transportation cost and the volume during transportation. Further, the present invention provides an electric junction box that facilitates alignment of a fuse unit or the like before connecting a bus bar. SOLUTION: An electric connection box 21 includes a fuse unit 2.
3 and other various units 24, and a connector 46 provided on the fixing portion 27 side with respect to the vehicle.
The fuse unit 23 and at least one other unit 24 are connected via a bus bar 44, and the fuse unit 23 is
The fuse unit 23
Installation space 4 for the connector 46 on the fixing portion 27 side of
5 are formed.

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, and more particularly to an electric junction box in which a fuse unit is arranged at a position away from a fixing portion for a vehicle, and an installation space for a connector is formed on the fixing unit side of the fuse unit.

[0002]

2. Description of the Related Art FIG. 11 shows a state in which an electric junction box 1 used in an electric vehicle is being assembled. Inside the casing 2, a relay 3, a resistor 4, and a bus bar fixing leg 5 are provided.
Are arranged and fixed, and the bus bar 6 is fastened and fixed to the bus bar fixing leg 5. A plate 9 having a plurality of fuse holders 8 in which bolts 7 are embedded is provided above an end of the bus bar 6 on a side (not shown) and the resistor 4, and the bus bar 10 and the fuses 11, 11 are connected to a nut 12.
Has been fixed by. Further, the bus bars 6, 1
The connectors 13, 13 protruding from the lower wall of the casing 2 are provided at the end of the side 0 not shown.

After assembling in this manner, a plate 15 on which the motor relay 14 is fixed is fastened and fixed above the resistor 4 at the center of the electric connection box 1, and the connecting portion 14a of the motor relay 14 is connected to A three-dimensional bus bar 16 is inserted into the bolt 7 of the fuse holder 8 on the right side, and the connection portion 14a of the motor relay 14 is
And fix with washers 18 and 19. Subsequently, the main fuse 20 is fixed to the predetermined fuse holders 8, 8 by bolts 7,
7 and fastened together with the bus bars 10 and 16. Note that another unit (not shown) is fixed above the relay 3 via fixing portions 2a, 2a and the like provided on the casing 2.

[0004]

In the above-mentioned prior art, since the connectors 13 and 13 are configured to protrude from the lower wall of the casing 2, the connector 13 is provided at the end of the assembling process as described above. When the assembling of the connectors 13 and 13 is not performed, it is necessary to use a dedicated jig (not shown) for the connectors 13 and 13 in order to secure stability during the work. Had been lowered.

When the electric connection box 1 is delivered to a car maker or the like, a base (not shown) such as the above-mentioned dedicated jig is used to protect the connectors 13 and 13 from the wall surface of the transporter (return box). ) Must be prepared, which increases the transportation cost and the volume during transportation.

Further, since the connectors 13, 13 protrude from the lower wall of the casing 2, when the electrical junction box 1 is mounted on a vehicle, if the connectors 13, 13 hit a part of the vehicle (not shown), There is a possibility that the connectors 13 and 13 may be damaged or damaged.

On the other hand, each connecting portion 20 of the main fuse 20 and the bus bar 16 of the motor relay 14 is
Since the positions of the a and 14a are different in the height direction, the bus bar 16 to be connected must be arranged in a three-dimensional manner. Matching was very difficult.

According to the present invention, in order to solve the above-mentioned problems, stability during the assembling operation can be ensured irrespective of the order of assembling the connectors. An object of the present invention is to provide an electric junction box which can reduce cost and volume during transportation, and further facilitates alignment of a fuse unit or the like before connecting a bus bar.

[0009]

According to a first aspect of the present invention, there is provided an electric connection box comprising: a fuse unit and various other units; and a connector provided on a fixed portion side of the vehicle. Having, in the electrical junction box in which the fuse unit and at least one other unit are connected via a bus bar, the fuse unit is disposed away from the fixing portion in a direction orthogonal to the fixing portion, An installation space for the connector is formed on the fixing unit side of the fuse unit.

In the above configuration, the electric connection box has a fuse unit and other various units, and a connector provided on a fixed portion side with respect to the vehicle, and the fuse unit and at least one other unit are connected via a bus bar. Connected, and the fuse unit is arranged away from the fixed part in the direction orthogonal to the fixed part,
An installation space for the connector is formed on the fixing unit side of the fuse unit. In this way, by disposing the fuse unit away from the fixing part, forming an installation space for the connector on the fixing part side of the fuse unit and providing the connector in the installation space, it is possible to secure the stability of the connector. A dedicated jig is not required, and stability during the assembling work can be ensured regardless of the assembling order of the connectors. Further, it is possible to protect the connector during transportation of the electric connection box or mounting on the vehicle. Furthermore, the base for protecting the connector, which is used when transporting the electric junction box, is not required, so that the transportation cost and the volume at the time of transportation can be reduced.

According to a second aspect of the present invention, in the electrical junction box according to the first aspect, the installation space is formed such that the connector does not protrude toward the vehicle from at least the fixing portion. It is characterized by.

In the above configuration, the installation space for the connector is formed so that the connector does not protrude toward the vehicle from at least the fixed portion, thereby stabilizing the assembling work, protecting the connector, and reducing the transportation cost and the like. Can be reliably achieved.

According to a third aspect of the present invention, there is provided the electrical junction box according to the first or second aspect, wherein the fuse unit is separated from the fuse unit by separating the fuse unit.
Each connection part to the bus bar with the other unit connected via the bus bar is formed on substantially the same plane.

In the above configuration, the fuse unit is separated from the fuse unit, and the respective connection portions for the bus bar between the fuse unit and another unit connected via the bus bar are formed on substantially the same plane, so that the bus bar is connected to the fuse unit. It is possible to arrange the fuse unit and the like before connecting the bus bar, and it is possible to easily perform the positioning.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the electric junction box of the present invention. 2 is a bottom view of the electric connection box of FIG. 1, FIG. 3 is a top view of the electric connection box of FIG. 1, and FIG. 4 is a resistance unit and a main body sub for explaining an assembly process of the electric connection box of FIG. FIG. 5 is an assembly diagram for explaining an assembling process of the fuse unit and the connector unit in the assembled state of FIG. 4, and FIG. 6 is an assembly diagram of the relay unit in the assembled state of FIG. 7 is an assembly diagram for explaining an assembling process of the main fuse in the assembled state of FIG. 6, and FIG. 8 is an assembly diagram for explaining an assembling process of the timer unit in the assembled state of FIG. FIG.

1 to 3, reference numeral 21 denotes an electric connection box provided in a motor room of an electric vehicle (not shown). The electric connection box 21 is connected to the resistance unit 2
2, a fuse unit 23, a relay unit 24, a connector unit 25, and a timer unit 26, and a main body lower plate 27 (corresponding to a fixing portion described in the claims) and a main body upper plate of each of the units 22 to 26 28, 29, 30 and the timer unit bracket 31 are fastened and fixed to the main body sub-cover 32.

The resistance unit 22 includes a main body lower plate 27.
, A motor sub-relay 34 having a resistance of 33 and 30 amps, and a bus bar 35, and a plurality (four in this example, but this number) provided on the lower surface (see FIG. 2) of the main body lower plate 27. However, the present invention is not limited thereto, and has a fixing structure that is fastened and fixed to a mounting portion (not shown) of the motor room via a fixing leg 36.

The fuse unit 23 includes a bus bar 38, a 20 amp A / C fuse 39, and a
0 amp DC / DC converter fuses 40, 2
The 50-ampere main fuses 41 are respectively fastened and fixed.

The relay unit 24 includes the upper plate 2 of the main body.
9 is provided with a motor relay 42 of 150 amps, and one connecting portion 42a of the motor relay 42 (FIG. 3).
The busbar 43 is connected to (see).

The fuse unit 23 has a connection portion 37 of a fuse holder 37 for fixing one of the main fuses 41.
a (see FIG. 1, bolt 3 of fuse holder 37 described later)
7b) and the motor relay 4
The two other connection portions 42b (see FIG. 3) are arranged on the same plane. A flat bus bar 44 is connected to the connection portion 37a of the fuse holder 37 and the other connection portion 42b of the motor relay 42.

The connector unit 25 has a space 45 formed on the body lower plate 27 side of the fuse unit 23 disposed so as to be separated from the body lower plate 27 upward in the direction orthogonal to the body lower plate 27.
(Corresponding to the installation space described in the claims), and the main body upper plate 30, which is opposite to the main body upper plates 28, 29, has connectors 46, 46 ( (Not limited to this number). The space 45 is formed so that the tips of the connectors 46, 46 do not project from the lower plate 27 of the main body toward the vehicle (not shown) (see FIG. 1).

Main body upper plate 3 of connectors 46, 46
Busbar-shaped connecting portions 46a, 46a protruding above
(See FIG. 1, only one is shown) are fastened and fixed to one end 35a, 38a (see FIG. 3) of each of the bus bar 35 of the resistance unit 22 and the bus bar 38 of the fuse unit 23.

On the other hand, the timer unit 26 is composed of a timer unit cord assembly 47 having an electronic circuit (not shown) and a timer unit bracket 31 (in this example, the timer unit 26 is mounted, but other electronic circuit units are provided). May be installed).

The reference numeral 48 in FIG.
2 shows a light emitting diode for recognizing, by light emission, a current-carrying state of the electric connection box 21 attached to the main body upper plate 29 via the bracket 49. The wire harness 50 is provided on the lower side of the main body upper plate 28 of the fuse unit 23 (on the side of the main body lower plate 27) and the timer unit bracket 31 of the timer unit 26.
(See FIG. 5) and 51 (see FIG. 8).

In the above configuration, the assembly of the electric connection box 21 will be described with reference to FIGS.
First, as shown in FIG. 4, the resistor 33, the motor sub-relay 34, and the busbar fixing legs 52, 52 are fixed on the upper surface of the main body lower plate 27 to which the fixing legs 36 are welded on the lower surface. The resistance unit 22 is formed by fastening and fixing the bus bar 35. Then, the main body sub-cover 32 is fixed to the resistance unit 22 so as to cover the periphery of the resistance unit 22.

Next, as shown in FIG. 5, a plurality of fuse holders 37 having bolts 37a embedded in the main body upper plate 28 are screwed and fixed, and a bus bar 38 and a fuse (A / C, DC / DC) are fixed to each bolt 37a. The fuse unit 23 is formed by inserting the DC converters 39 and 40. Then, the wire harness 50 is attached to the fuse unit 23, and the fuse unit 23 is fixed at a predetermined position on the main body sub-cover 32.

The connector 4 is attached to the upper plate 30 of the main body.
The connector unit 25 having the screws 6 and 46 fixed by screws is installed in the space 45 formed by the fuse unit 23 as described above, and the connection portions 46a and 46a of the connector unit 25, the bus bar 35 of the resistance unit 22 and the fuse unit One end 35a of each of the 23 bus bars 38 is connected to the other end 35a (see FIG. 3).

Subsequently, as shown in FIG. 6, the relay unit 24 is fixed to a predetermined position of the main body sub-cover 32. At this time, the connecting portion 37a (nut portion, see FIG. 1) or the fuse unit 23 and the relay unit 24 are arranged such that the connecting portion 37a of the fuse holder 37 and the other connecting portion 42b of the motor relay 42 are located on the same plane. Move to adjust the position.

Next, as shown in FIG. 7, a bus bar 43 is connected to one connecting portion 42a of the motor relay 42.
The end of the bus bar 44 formed in a planar shape is inserted into the other connecting portion 42b and the connecting portion 37a of the fuse holder 37. After fixing the end of the bus bar 44 on the other connecting portion 42b side together with the terminal 53, the bolts 37 of the fuse holders 37, 37 into which the bus bars 38, 44 are respectively inserted are attached.
b and 37b, the main fuse 41 is
And washer 55 and 56.

Finally, the timer unit 26 to which the wire harness 51 is attached in advance is fixed as shown in FIG. 8, and the assembly of the electric connection box 21 is completed.

The assembly of the connector unit 25 is as follows.
Although the above description has been made after assembling the fuse unit 23, the electric connection box 21 of this example is configured for each unit, so that it can be assembled before assembling the fuse unit 23 or in the last step.

As described above, the fuse unit 23 is disposed so as to be spaced apart from the main body lower plate 27 (see FIG. 1) as a fixing portion, and the space 4 for the connectors 46, 46 is provided.
5 (installation space, see FIG. 1) to fuse unit 23
Formed on the lower plate 27 side of the
Since the space 6 is provided in the space 45, stability during the assembling work can be secured without using a dedicated jig (not shown) described in the conventional example.

As described above, stable work can be performed irrespective of the order of assembling the connectors (connector unit 25), and the connectors 46, 46 can be mounted during transportation of the electric junction box 21 or mounting on the vehicle. Protection can be achieved.

Furthermore, since the base for protecting the connectors 46, 46 used for transporting the electric junction box 21 is no longer required, the transportation cost and the volume during transportation can be reduced. it can.

On the other hand, a connection portion 37a (see FIG. 1) of a fuse holder 37 for fixing one of the main fuses 41,
Since the other connecting portion 42b (see FIGS. 3 and 6) of the motor relay 42 is arranged on the same plane, the bus bar 44 can be arranged in a planar manner, and the bus bar 44 can be connected. It is possible to easily align the fuse unit 23 and the like before the operation.

Next, another embodiment of the connector unit 25 will be described with reference to FIG. The connector unit 57 is provided with connectors 58, 58 (only one of which is shown) such that the body portions of the connectors 46, 46 described above are bent 90 ° to the left (as viewed in the drawing) on the body upper plate 30. . Use of such a connector unit 57 has an advantage that connection with a mating connector (not shown) can be facilitated.

FIG. 10 shows only the bus bars 35 of the resistance unit 22 (see FIG. 1) and the bus bar 38 of the fuse unit 23 by connecting only the connectors 46 and 46 (only one of them is shown).
Are connected to respective one ends 35a and 38a (see FIG. 3). In this way, it is possible to directly connect only the connectors 46, 46, and the workability relating to the assembling is very good.

Although the electric junction box for an electric vehicle has been described above, the present invention can be applied to an electric junction box for a general vehicle. In addition, an installation space (the space 45) for the connector can be formed in an intermediate portion of the electric connection box depending on the arrangement of the unit.

[0039]

As described above, according to the first aspect of the present invention, an electric junction box has a fuse unit and other various units, and a connector provided on a fixing portion side for a vehicle. At the same time, the fuse unit and at least one other unit are connected via a bus bar, and the fuse unit is
The fixing unit is arranged away from the fixing unit in a direction perpendicular to the fixing unit, so that an installation space for the connector is formed on the fixing unit side of the fuse unit. In this way, by disposing the fuse unit away from the fixing part, forming an installation space for the connector on the fixing part side of the fuse unit and providing the connector in the installation space, it is possible to secure the stability of the connector. This eliminates the need for a special jig, and ensures the stability of the assembling work regardless of the order of assembling the connectors.
In addition, there is an effect that the connector can be protected during transportation of the electric connection box or attachment to the vehicle. Furthermore, there is no need for a base for protecting the connector, which is used when transporting the electric junction box, so that it is possible to reduce the transportation cost and the volume during transportation.

According to the second aspect of the present invention, the installation space for the connector is formed so that the connector does not protrude at least from the fixed portion toward the vehicle, so that the stability at the time of the assembling work and the connector can be improved. Protection,
In addition, there is an effect that the transportation cost and the like can be surely reduced.

According to the third aspect of the present invention, the fuse unit is separated from the fuse unit,
By forming each connecting portion to the bus bar with another unit connected via the bus bar on substantially the same plane, it is possible to arrange the bus bar in a two-dimensional manner and also to connect the bus bar before connecting the bus bar. There is an effect that positioning of the fuse unit and the like can be easily performed.

[Brief description of the drawings]

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

FIG. 2 is a bottom view of the electric junction box of FIG.

FIG. 3 is a top view of the electric junction box of FIG. 1;

FIG. 4 is an assembly diagram of a resistance unit and a main body sub-cover for describing an assembly process of the electric junction box of FIG. 1;

5 is an assembly diagram for explaining an assembly process of a fuse unit and a connector unit in the assembled state of FIG. 4;

6 is an assembling diagram for explaining an assembling step of the relay unit in the assembled state of FIG. 5;

FIG. 7 is an assembly diagram for explaining an assembly process of a main fuse in the assembled state of FIG. 6;

8 is an assembling diagram for explaining an assembling step of the timer unit in the assembled state of FIG. 7;

FIG. 9 is an explanatory diagram for explaining another embodiment of the connector unit of FIG. 1;

FIG. 10 is an explanatory diagram of a case where a single connector is directly connected instead of the connector unit of FIG. 1;

FIG. 11 is an assembling diagram for explaining an assembling step of a conventional electric junction box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 Electric connection box 22 Resistance unit 23 Fuse unit 24 Relay unit (other units) 25 Connector unit 26 Timer unit 27 Main unit lower plate 28, 29, 30 Main unit upper plate 31 Timer unit bracket 32 Main unit sub-cover 35, 38, 43, 44 Bus bar 36 Fixed leg 37 Fuse holder 37a Connection part 41 Main fuse 42 Motor relay 42a One connection part 42b The other connection part (connection part) 45 Space (installation space) 46 Connector 46a Connection part 50, 51 Wire harness 57 Connector unit 58 Connector

Claims (3)

[Claims] 1. An electrical connection comprising a fuse unit and other various units, and a connector provided on a fixed portion side with respect to a vehicle, wherein the fuse unit and at least one other unit are connected via a bus bar. In the box, the fuse unit is disposed apart from the fixing unit in a direction orthogonal to the fixing unit, and an installation space for the connector is formed on the fixing unit side of the fuse unit. . 2. The electric connection box according to claim 1, wherein the installation space is formed so that the connector does not protrude from the fixing portion toward the vehicle. 3. The electric connection box according to claim 1, wherein the fuse unit is separated from the fuse unit, and the other unit connected to the fuse unit via the bus bar is connected to the bus bar. An electric connection box, wherein the connecting portions are formed on substantially the same plane.