JPH06276648A - Relay box - Google Patents

Abstract

PURPOSE:To provide a relay box capable of setting an electric connection of a bus-bar to a stud bolt freely, even when the direction of insertion of the bus-bar to a box body, and the standing direction of the stud bolt provided straight for the connection with other electric circuits and the fixing of the bus-bar to the box body are restricted. CONSTITUTION:A stud bolt 31 is provided on a supporting member 30 to be fitted to a box body 10 through a fixing means, and the supporting member 30 is fitted to the box body 10 after a bus-bar 20 is inserted into the box body 10. Then, the stud bolt 31 is inserted into the hole 23a of an electric connection 23 of the bus-bar 20, and it is fastened with a nut along with the terminals of a power cable, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay box capable of accommodating a relay, a fuse and the like in an integrated manner, and more particularly to a relay box in which a bus bar can be easily mounted and fixed.

[0002]

2. Description of the Related Art A relay box is often used in an automobile or the like which is space-constrained because it allows efficient arrangement of relays and fuses. A so-called metal connection piece is attached, and each relay, fuse, and the like are electrically connected to a battery or the like via this bus bar.

By the way, this type of relay box is usually mounted on an automobile in a state in which a plurality of relay boxes 50 are housed in another frame 60 as shown in FIG. The electrical connection is made as follows.

That is, as shown in FIGS. 12 and 13, a stud bolt 61 is erected on the frame 60, and the stud bolt 61 has insertion holes 53 and 72. And the terminal 71 of the connecting electric wire 70
The bus bar 51 is fixed to the frame body 60 by mounting and tightening with the nut 62, and the bus bar 51 and the connection electric wire 70 are electrically connected.

[0005]

By the way, when the relay box is mounted as a single unit on an automobile, it is necessary to attach the stud bolts standing on the frame to the relay box itself.

However, the standing direction and the position of the stud bolt cannot be arbitrarily set because they are limited by the conditions on the vehicle, and the inserting direction of the bus bar also considers the efficient arrangement of relays and the like. Then, it will be considerably limited, and there may be a case where the electrical connection part of the bus bar cannot be set on the stud bolt in a state where the bus bar is inserted in the relay box body.

Therefore, an object of the present invention is to provide a relay box in which the electrical connection portion of the bus bar can be freely set on the stud bolt under any on-vehicle condition.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a relay box having stud bolts for fixing the electrical connection portion of the bus bar to the box body and for connecting to another electric circuit, The stud bolt is provided on a support member separate from the box body, and the support member is separately attached to the box body via a fixing means.

[0009]

In the relay box configured as described above, after inserting the busbar into the box body, the support member having the stud bolt is attached to the box body through the fixing means, so that the electrical connection portion of the busbar is studded. Set it on the bolt and tighten the nut with this electrical connection part together with the terminal such as the power cable to fix and connect.

[0010]

EXAMPLES Examples will be described below with reference to the drawings. As shown in FIG. 1, this relay box is composed of a main body 1 and a waterproof upper cover 2 which covers the upper portion of the main body 1, both of which are made of synthetic resin.

As shown in FIG. 2, the main body 1 includes a box main body 10, a bus bar 20 attached to the box main body 10, and the bus bar 20.
And a support member 30 attached to the.

A protrusion 11 and a protrusion 12 are formed on the box body 10. The protrusion 11 restricts the fitting position of the upper cover 2 and the hook 2a provided on the upper cover 2 is provided. Protrusion 12
The upper cover 2 is fixed to the box body 10 by engaging with.

Further, the box body 10 is provided with sockets 13 and 14 for mounting a fuse and a fusible link on the upper surface thereof.
An opening 15 is formed between the fourteen.

Further, the box main body 10 is provided with a fixing portion 17 on the outer surface of one side wall 16 for attaching the box main body 10 to a substrate of a vehicle body of an automobile. As shown in FIGS. 3 and 4 (a), an elongated hole 17a for inserting a fastening bolt is formed, and the box body 10 is fastened when the bolt is fastened.
A temporary fixing portion 17b for temporarily fixing the substrate to the substrate or the like is provided.

The temporary fixing portion 17b is a projecting portion that projects from the one end side along the side wall 16 with the fixing portion 17 as a base end portion, but the middle portion is bent and the leading end portion 17b is formed. The upper end of ′ is the substrate C from the lower surface of the fixing portion 17.
It is located below by the thickness of.

On the other hand, as shown in FIG. 4 (b), the board C to which the box body 10 is to be attached has a fitting insertion hole having substantially the same shape and size as the tip portion 17b 'of the temporary fixing portion 17b. c is formed, and the box body 10 is temporarily fixed to the substrate C by the following operation.

That is, as shown in FIGS.
The tip portion 17b 'of the temporary fixing portion 17b is provided with the fitting insertion hole c from above.
When the box body 10 is slid onto the tip side of the temporary fixing portion 17b, the upper end of the tip portion 17b 'comes into contact with the lower surface of the substrate C and the lower surface of the fixing portion 17 comes into contact with the upper surface of the substrate C. The main body 10 is temporarily fixed on the substrate C.

In this state, since the fastening holes c'for the fastening bolts are formed at the positions on the substrate C corresponding to the elongated holes 17a, the operator can position the box body 10 without manually supporting it. The bolts can be easily tightened without slipping.

In this embodiment, as described above,
The fixing portion 17 plays the role of the base end portion of the temporary fixing portion 17b. However, when the temporary fixing portion is provided on the box body 10 alone, a base end portion whose lower surface contacts the upper surface of the substrate C is separately provided. I need to put it.

Further, as shown in FIG. 6, an inverted U-shaped bolt holding member 18 is fixed to the inside of the box body 10 at one end side thereof, and the bolt 19 is provided in the recess 18a of the bolt holding member 18. The base portion 19a is press-fitted so that the bolt 19 is horizontally fixed with its tip facing outward.

The bus bar 20 includes the sockets 1
2, which is for supplying electric power to the terminals 3, 14 and has terminal groups 21, 22 to be inserted into the sockets 13, 14 at the upper ends thereof, as shown in FIG. In addition, the bus bar 20 is used as an electrical connection portion for supplying power from a battery at a position corresponding to the opening 15 between the terminal groups 21 and 22 and also for fixing the bus bar 20 itself. The bent piece 23 is provided with a hole 23a through which a stud bolt 31 for terminal connection described later is inserted.

Further, a bent piece 24 is provided at one end of the bus bar 20 as an electrical connection portion for supplying power to another relay box, and the bent piece 24 is used for terminal connection. A U-shaped groove 24a for sandwiching the bolt 19 is formed.

The support member 30 is a block made of synthetic resin provided with a stud bolt 31 protruding from the upper surface thereof, and as shown in FIG. 8, a side surface of the box body 10 via a fixing means 40. It is attached to the inner surface side of the wall 16.

The fixing means 40 is, as shown in FIGS. 8 and 9, a locking portion 4 provided on the inner surface side of the side wall 16.
0a and a locked portion 40b provided on the side surface of the support member 30 and including a slider 41b and a protrusion 42b.

The locking portion 40a is, as shown in FIG.
The pair of slide guides 41a slidably supporting the slider 41b of the locking portion 40b, and the elastic piece 42a provided between the slide guides 41a and elastically deformable on the wall surface side. At the tip of 42a,
A step portion 43a is formed which engages with the protrusion 42b of the locking portion 40b.

Therefore, when the slider 41b is fitted into the slide guide 41a from below and the support member 30 is slid upward, the elastic piece 42a is deformed toward the wall surface by being pushed by the protrusion 42b of the locked portion 40b. Then, as shown in FIG. 9, the protrusion 42b engages with the stepped portion 43a at a predetermined position to support the support member 3
0 is fixed to the side wall 16. In this state, as shown in the figure, the stud bolt 31 is inserted into the hole 23a of the bent piece 23 of the bus bar, so that the terminal a of the power cable A from the battery is further connected to the stud bolt 31. The bus bar 20 is fixed to the box body 10 via the support member 30 and electrically connected to the battery when the bus bar 20 is fastened to the box body 10 and fastened with the nut 32.

Further, when the bus bar 20 is mounted and fixed to the box body 10 in this way, as shown in FIG. 7A, the bolt 19 is inserted into the U-shaped groove 24a of the bent piece 24.
Since the terminal b of the power supply cable B to another relay box is inserted into this bolt 19 and fastened with the nut 19b as shown in FIG. Power is also supplied to other relay boxes via the relay boxes.

The upper cover 2 is a box body 1.
Although the sockets 13 and 14 of No. 0 cover the upper surface of the box body 10 so as not to get wet by rain or the like, as described above, since the power cable A is connected to the bus bar 20 at the central portion thereof, It is not possible to cover the entire upper surface of the box body 10, and as shown in FIG. 1, the upper cover 2 itself is also provided with a lacking portion 2b.

For this reason, as shown in FIG. 10, a polyvinyl chloride sub-cover 3 to be fitted into the cutout portion 2b is separately prepared, and the penetrating portion is taped with the power cable A penetrating therethrough. By stopping, the sub-cover 3 is fixed to the power cable A, and the terminal cover of the power cable A is covered by the sub-cover 3.

Water entering the upper part of the box body 10 along the surface of the sub cover 3 flows out of the relay box through the rails 15a in the box body 10, as shown in FIG. ing.

[0031]

As described above, in the relay box of the present invention, the stud bolts for fixing the electrical connection portion of the bus bar to the box body and for electrically connecting the terminals such as the power cable to the box body are provided. Is provided on another support member, and this support member is attached to the box body via fixing means to set the electrical connection part of the bus bar to the stud bolt, so the orientation of the stud bolt is restricted depending on the vehicle conditions etc. Even if you receive
By changing the attachment direction of the support member to the box body, the electrical connection portion of the busbar can be freely set on the stud bolt regardless of the insertion direction of the busbar to the box body.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment according to the present invention.

FIG. 2 is an exploded perspective view of the same main body section.

FIG. 3 is a perspective view showing a fixing portion of the above.

FIG. 4 is a plan view showing the relationship between the fixing part and the board on which the relay box is mounted.

FIG. 5 is a process diagram showing a temporary fixing procedure of the above.

FIG. 6 is an end view of the above.

FIG. 7 is a diagram showing a connection state of the above-mentioned bus bar and a power supply cable to another relay box.

FIG. 8 is a perspective view showing a support member and a fixing means of the above.

FIG. 9 is a cross-sectional view showing a connection state between the above bus bar and a power cable.

FIG. 10 is a view showing an attached state of a sub cover covering a terminal connecting portion of a power cable.

FIG. 11 is a perspective view showing the relationship between the sub-cover and the rail of the same.

FIG. 12 is a perspective view showing a conventional example.

FIG. 13 is an exploded perspective view showing a connected state of the above-mentioned bus bar.

[Explanation of symbols]

 1 Main Body 2 Upper Cover 2a Hook 2b Missing Part 3 Sub Cover 10 Box Main Body 11 Protrusion 12 Protrusion 13, 14 Socket 15 Opening 15a Rail 16 Side Wall 17 Fixing Part 17b Temporary Fixing Part 18 Bolt Holding Member 19 Bolt 20 Bus Bar 21, 22 Terminal Group 23, 24 Bent Piece 30 Support Member 31 Stud Bolt 40 Fixing Means 40a Locking Part 40b Locked Part 41a Slide Guide 41b Slider 42a Elastic Piece 42b Protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Nakamoto 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd.

Claims (1)

[Claims] 1. A relay box having a stud bolt for fixing an electrical connection portion of a bus bar to a box body and connecting to another electric circuit, wherein the stud bolt is provided on a support member separate from the box body. A relay box characterized in that the support member is separately attached to the box body via a fixing means.