JP3248473B2 - Distribution box and its assembling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power distribution box mounted in an engine room of a vehicle such as an automobile and used for power distribution to load components, and a method of assembling the same.

[0002]

2. Description of the Related Art As a conventional accessory box of this type,
An accessory box is known in which a housing hole is formed at a lower portion of a junction block in which an electric component such as a fuse is mounted, and a connector with an extended wire harness is directly assembled and connected in the housing hole. In this accessory box, a nut is fixed to the junction block, and a bolt insertion hole is formed in the connector. Then, the bolt is screwed into the nut from below the connector via the bolt insertion hole, whereby the junction block and the connector are fastened and fixed. Further, in this assembled state, the wire harness is extended and regulated in a predetermined direction.

[0003]

However, in the conventional accessory box, when the junction block and the connector are assembled, electric components such as fuses are mounted on the upper surface of the junction block. It cannot be turned upside down and held on a jig or the like. For this reason, conventionally, a worker holds the junction block in his / her hand, flips it upside down, and in this state, assembles and connects a connector on the junction block. Therefore, there is a problem that workability at the time of assembly is very poor.

Further, in the conventional accessory box, since the wiring harness is extended in a predetermined direction after assembly of the junction block and the connector is completed, it is difficult to perform the operation of regulating the wire harness. There were also problems.

[0005] The present invention has been made by paying attention to such problems existing in the prior art. An object of the present invention is to provide a power distribution box which can easily and securely fasten and fix a junction block and a connector without turning over or using a jig or the like, and a method of assembling the power distribution box. It is in.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a box main body, a connector assembled in the box main body, and a connector connected to the connector are provided. In a power distribution box including a junction block provided with electric components such as fuses, which is assembled from a side opposite to the connector in the box main body, the box main body is formed with a housing portion for loosely housing the connector. A holding member for temporarily fixing and holding the connector in a loosely fitted state is provided in the housing portion,
A plurality of concave grooves extending in the fitting direction of the connector on the inner peripheral surface of the portion
As well as the junction block
A plurality of protrusions that can be engaged with the concave groove are formed, and between the junction block and the connector, after the box body is mounted on the vehicle with the connector temporarily fixed and held, the junction block is fastened and fixed to the connector. Are provided.

According to a second aspect of the present invention, in the power distribution box according to the first aspect, the tightening means includes a bolt and a bolt.
It consists of nuts .

[0008] In the invention of a method of assembling the power distribution box according to 請 Motomeko 3, loosely fitted accommodate connector receptacle of the box body by tacking held in Yu fitted state, the wire harness extending from the connector in a predetermined direction drawer, mounting the box body on the vehicle in this state, then, of the housing portion
To the groove extending in the fitting direction of the connector formed on the peripheral surface
And engaging a ridge that can be engaged with the concave groove formed in the junction block provided with an electric component such as a fuse.
The junction block is assembled in the box body from the side opposite to the connector, and is fastened and fixed to the connector.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the distribution box of the present invention is embodied in an accessory box will be described below in detail with reference to the drawings.

As shown in FIGS. 1, 2, and 6, the box body 11 is formed of a synthetic resin into a rectangular box shape, and its side wall 11a is formed to extend downward. Three corners in the box body 11 have stepped recesses 12
Are formed, and a bolt insertion hole 13 is formed in the inner bottom thereof. Then, the side wall 11a of the box body 11
With the lower edge of the joint joined to the body 14 of the vehicle,
The box body 11 is attached to the body 14 by screwing a bolt 16 from each bolt insertion hole 13 into a screw hole 15 of the body 14.

A support plate 17 is integrally formed at the center of the box body 11, and three storage holes 18 are formed at predetermined intervals on the support plate 17 as storage portions. A plurality of concave grooves 19 are formed in the inner peripheral surface of each accommodation hole 18 so as to extend in a vertical direction at a predetermined pitch. Each accommodation hole 18
A plurality of holding claws 20 as holding members constituting the holding means are formed at predetermined intervals on an inner peripheral surface of the lower end of the holding member.
On the outer surface of the side wall 11a of the box main body 11, a cylindrical drawer 21 is provided to protrude rearward and to both sides.

As shown in FIG. 1, FIG. 2 and FIG. 7, a connector 26 is loosely fitted and accommodated in each accommodation hole 18 of the box body 11 from below, and is held by a holding claw 20 as shown in FIG. At the temporary fixing position. Each connector 26 is formed of a synthetic resin, and a plurality of female contacts 27 are embedded and formed in the inside thereof, and a wire harness 28 connected to each female contact 27 is extended below. In a state where the connector 26 is temporarily held in the accommodation hole 18, the wire harness 28 is extended and regulated in a predetermined direction through the drawer 21.

A tapered engaging surface 29 constituting centering adjusting means is formed on the outer peripheral edge of the upper end of each connector 26. An insertion hole 30 is formed in the center of each connector 26 in a vertical direction, and a nut 31 constituting fastening means is embedded and formed in an intermediate portion of the insertion hole 30.
Each connector 26 is formed with a rectangular annular engagement recess 32 that constitutes a regulating means so as to surround the insertion hole 30 and the nut 31.

As shown in FIGS. 1 to 5 and FIG. 7, a junction block 35 made of synthetic resin is assembled in the box main body 11 from the upper side opposite to the direction in which the connector 26 is assembled. On the upper surface of this junction block 35, a plurality of fuses 36 and relays 3
7 are mounted, and a plurality of male contacts 38 connected to each electric component are divided into three groups on the lower surface.

On the lower surface of the junction block 35, a plurality of protrusions 39 are provided so as to surround the male contact 38 in three groups. When assembling the junction block 35 to the box body 11, these ridges 39 are inserted and engaged with the concave grooves 19 in the respective accommodation holes 18, and the junction block 3 is assembled.
5 is positioned and arranged at a predetermined position in the box main body 11.

On the inner peripheral edge of the lower end of each of the ridges 39, a tapered engaging surface 40 constituting centering adjusting means is formed. Then, as shown in FIG. 7B, when the junction block 35 is assembled to the box body 11, these tapered engagement surfaces 40 engage with the tapered engagement surface 29 on the connector 26, Each connector 26 is centered and adjusted from the temporary fixing position to the connection position.

The junction block 35 has three bolt insertion holes 41 formed therein. A rectangular annular engagement projection 42 constituting a regulating means is formed on the lower surface of the junction block 35 so as to surround each of the bolt insertion holes 41. The projection is formed. The bolts 4 constituting the fastening means are inserted into the respective bolt insertion holes 41 from above the junction block 35.
3 is inserted and screwed into a nut 31 in each connector 26.

Then, by the screwing of these bolts 43, the junction block 35 is fastened and fixed to each connector 26, and the male contacts 38 of the junction block 35 are connected to the female contacts 27 of each connector 26. It has become. Also, when fastening and fixing the junction block 35 and the connector 26,
The engagement protrusions 42 of the junction block 35 engage with the engagement recesses 32 of each connector 26, so that the coupling position between the junction block 35 and the connector 26 is regulated.

As shown in FIGS. 1 and 2, a cover 4 made of synthetic resin is
6 is attached. The cover 46 covers the upper surface of the junction block 35.

Next, a method of assembling the accessory box configured as described above will be described. When assembling the accessory box, first, as shown in FIG. 7A, the connector 26 is loosely fitted into each of the accommodation holes 18 of the box body 11 from below. Then, these connectors 26 are temporarily fixed and held by the holding claws 20 in the lower temporary fixing position in a loosely fitted state. In this state, the wire harness 28 extending from each connector 26 is inserted into the drawer 21 of the box main body 11, pulled out in a predetermined direction, and held in the drawn state.

Thereafter, as shown in FIG. 1, the lower edge of the side wall 11a of the box body 11 is joined to the body 14 of the vehicle, and the box body 11 is fastened and fixed to the body 14 by a plurality of bolts 16. In this state, FIG.
As shown in (b), the junction block 35 is assembled in the box main body 11 from above. Then, each of the protrusions 39 of the junction block 35 is inserted and engaged with each of the concave grooves 19 in the accommodation hole 18, and the junction block 35 is positioned and arranged at a predetermined position in the box body 11.

At the time of assembling the junction block 35, a tapered engagement surface 40 formed on each group of ridges 39 is formed on each connector 26 as shown in FIG. 7B. Engage with the tapered engagement surface 29. As a result, the connectors 26 accommodated in the accommodation holes 18 in the loosely fitted state are adjusted from the temporary fixing positions to the connection positions.

Thereafter, as shown in FIG. 7C, a bolt 43 is screwed into the nut 31 in each connector 26 from above the junction block 35 through the bolt insertion hole 41. In this case, the engagement protrusion 42 of the junction block 35 engages with the engagement recess 32 of each connector 26,
The coupling position between the junction block 35 and the connector 26 is restricted. Each connector 26 is held in the holding hole 18 by the screwing of the bolt 43.
The male contact 38 of the junction block 35 is connected to the female contact 27 of each connector 26 as shown in FIG.

In this state, as shown in FIGS. 1 and 2,
When a cover 46 is attached to the upper end opening of the box body 11, the junction block 3 is
5 is covered, and the assembling work of the accessory box is completed.

The effects that can be expected from the above embodiment will be described below. In the accessory box of this embodiment, the accommodation hole 1 for loosely accommodating the connector 26 in the box body 11.
A holding member 20 for temporarily fixing and holding the connector 26 in a loosely fitted state is provided in the accommodation hole 18.
After the box body 11 is mounted on the vehicle between the junction block 35 and the connector 26 in a state where the connector 26 is temporarily fixed, the junction block 3
A nut 31 and a bolt 43 are provided as fastening means for fastening and fixing the connector 5 to the connector 26.

For this reason, the junction block 35 and the connector 26 can be easily and reliably tightened and fixed without turning over or using a jig or the like. Therefore, workability at the time of assembling the junction block 35 and the connector 26 can be improved. In a state where the connector 26 is temporarily fixed and held in the accommodation hole 18 of the box body 11, the wire harness 28
Can be extended and set in a predetermined direction, so that the setting operation can be easily performed.

In the accessory box of this embodiment, a plurality of grooves 19 extending in the loose fitting direction of the connector 26 are formed on the inner peripheral surface of the housing hole 18, and the junction block 35 is engaged with the grooves 19. A plurality of possible ridges 39 are formed. For this reason, when assembling the junction block 35 to the box body 11, the groove 19 and the ridge 3
By engagement with the connector 9, the junction block 35 can be easily positioned at a predetermined mounting position corresponding to the connector 26.

In the accessory box of this embodiment, the fastening means is constituted by the bolt 43 and the nut 31. Therefore, the junction block 35 and the connector 26 can be securely tightened and fixed with a simple configuration including the bolts 43 and the nuts 31.

In the accessory box of this embodiment, the holding member is constituted by a plurality of holding claws 20 projecting into the accommodation hole 18. Therefore, the configuration of the holding member is simple, and the connector 26 can be reliably locked and held in the temporarily fixed state.

In the accessory box of this embodiment, the nut 31 of the fastening means is embedded and fixed in the connector 26, and the bolt 43 is screwed to the nut 31 via the junction block 35. For this reason,
After assembling the junction block 35 to the box body 11 mounted on the vehicle, the bolt 43 is screwed into the nut 31 in the connector 26 from above the junction block 35, and the junction block 35 and the connector 26 are easily tightened. Can be fixed.

This embodiment can be embodied with the following modifications. A structure in which a nut constituting the fastening means is locked and held in the connector 26 without being embedded in the connector 26 and molded.

The junction block 35 and the connector 26 are configured to be fastened and fixed by different fastening means than the bolt 43 and the nut 31. In a state in which the connector 26 is loosely fitted and accommodated in the accommodation hole 18 of the box body 11, the connector 26 is temporarily held by a holding member different from the holding claw 20.

A concave groove 19 formed in the accommodation hole 18;
In addition, the protrusion 39 formed on the junction block 35 is omitted. Further, the technical idea that will be grasped by the above-described embodiment, described together with their effects below.

[0034] - said retention member distribution box according to claim 1 or claim 2 comprising a plurality of holding claws projecting from the receptacle. According to this configuration, the configuration of the holding member is simple, and the connector can be reliably locked and held in the temporarily fixed state.

The distribution box according to claim 2 , wherein the nut of the fastening means is embedded and fixed in the connector, and the bolt is screwed to the nut via a junction block. According to this configuration, the bolt can be screwed into the nut in the connector from above the junction block, and the junction block and the connector can be easily tightened and fixed.

[0036]

The present invention is configured as described above, and has the following effects. Claim 1 and Claim
According to the invention described in ( 3) , the junction block and the connector can be easily and securely tightened and fixed without turning over and using a jig or the like.

Further, when assembling the junction block in the box body, by engagement of the grooves and ridges, it can be easily aligned in a predetermined mounting position of the corresponding junction block connector with.

According to the second aspect of the present invention, the junction block and the connector can be securely fastened and fixed with a simple structure including bolts and nuts.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of the accessory box.

FIG. 3 is a front view showing a junction block.

FIG. 4 is a side view of the junction block.

FIG. 5 is an essential part perspective view showing the junction block from the bottom side.

FIG. 6 is a plan view showing the box body.

FIG. 7 is a partial cross-sectional view illustrating a method of assembling the accessory box in order.

[Explanation of symbols]

11: Box body, 13: Bolt insertion hole, 14: Vehicle body, 15: Screw hole, 16: Bolt, 18: Housing hole (housing part), 19: Groove, 20: As a holding member constituting a holding means , A connector, 27 a female contact, 28 a wire harness, 31 a nut constituting a fastening means, 35 a junction block, 36 a fuse, 37 a relay, 38 a male contact, 39: ridges, 41: bolt insertion holes, 43: bolts constituting fastening means.

Claims (3)

(57) [Claims] 1. A box body, a connector assembled in the box body, and a junction mounted in the box body from a side opposite to the connector so as to be connected to the connector and provided with an electric component such as a fuse. in the distribution box and a block, the box body forms a housing portion for loosely accommodating the connector, disposed the retaining member that the housing portion for temporarily stopping hold the connector in a loosely fitted state, the Inner circumference of housing
Has a plurality of grooves extending in the connector insertion direction.
At the same time, it engages with the groove in the junction block
A plurality of protruding ridges are formed, and between the junction block and the connector, a fastening means for fastening the junction block to the connector after the box body is attached to the vehicle while the connector is temporarily fixed and held. Distribution box provided. 2. The fastening means comprises a bolt and a nut.
Distribution box according to claim 1 that. 3. A connector in which a connector is inserted into a housing portion of a box body.
Temporarily retains in a loosely fitted state by fitting and extending from the connector
Pull out the wire harness in the specified direction, and
The main body of the housing is mounted on a vehicle, and thereafter, a connector formed on the inner peripheral surface of the housing portion is fitted.
Electrical components such as fuses are installed in the grooves extending in
The groove formed in the junction block
Engageable ridges are engaged and the junction block
The connector in the box body from the side opposite to the connector
Of the distribution box to be fastened and fixed to the connector
Method.