JP2563315Y2 - Branch junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a branch junction box used for interconnecting wire harnesses.

[Conventional technology]

As a branch connection box of this type, the applicant has previously proposed the one shown in FIGS. 6 and 7 (Japanese Utility Model Application No. 2-0026).
No. 18).

In the drawing, reference numeral 1 denotes a lower case in which a plurality of busbar accommodating grooves 2 are juxtaposed, and 3 denotes an upper case in which a plurality of connector insertion portions 4 are provided. 2 and a branch tab 7 protruding from the other side edge.
The group penetrates through the tab insertion hole 8 of the upper case 3 and protrudes into the connector insertion portion 4.

As shown in an enlarged manner in FIG. 7, the branch tab 7 has a tab connecting portion 6 comprising a rising piece 6a protruding from the bus bar 5 at equal intervals and a tab connecting piece 6b extending to both sides or one side from this.
And the tab connecting piece 6b is bent at right angles to the bus bar plate surface, so that the branch tab 7 projects to the side of the bus bar 5.

[Problems to be solved by the invention]

To increase the number of internal circuits and increase the absorption capacity of the joint in the wire harness in the branch junction box having the conventional structure, the length l or the width w of the case may be increased. Directional dimensions are limited.

Therefore, as shown in FIG. 1, rising pieces 6a of the tab connecting portions 6 are alternately projected on both sides of the bus bar 5 in a staggered manner, so that the branching tabs A are provided on both sides of the bus bar 5. May be used. However, in this case, the wiring board (the lower case 1 having the busbar housing groove 2) cannot be used for the busbar 5 as shown in FIG. 6, so that the structure for fixing the branch tab 7 becomes a problem.

The present invention has been made in consideration of the above problems,
Increase the number of circuits without changing the lateral dimensions of the case,
It is another object of the present invention to provide a branch connection box having a structure capable of reliably fixing and positioning a branch terminal.

[Means for solving the problem]

In order to achieve the above object, the junction box of the present invention is:
A branch circuit body comprising a plurality of branch tabs protruding vertically in a zigzag manner provided on upper and lower side edges of a strip-shaped bus bar, respectively, and the branch circuit bodies. Consists of a pair of upper and lower cases in which each bus bar is arranged in parallel at a predetermined interval, and the upper and lower branch tabs of each branch circuit body are accommodated in a state aligned in a direction orthogonal to the bus bar. A plurality of connector insertion portions are provided in a staggered manner corresponding to the upper and lower branch tab groups, and tab connection portions are respectively provided on the inner surface of the other case opposed to the case where the branch tab connected to the tab connection portion protrudes. The upper and lower branch tabs of each branch circuit body are projected through the tab insertion holes of the upper and lower cases to project to the connector insertion portion, and the upper and lower tab connecting portions are connected to one case. When Characterized by being sandwiched and fixed between the seat of the square of the case.

Further, in order to facilitate the assembling work of the branch circuit body and the upper and lower cases and the positioning of the branch tab, the insertion of the branch connecting body into at least one of the seats of the pair of cases with respect to the tab connecting portion is performed. Preferably, a groove is provided.

[Action]

According to the present invention, the upper and lower branch tabs of the branch circuit body are:
The tab connecting portion is clamped and fixed between the receiving case of one case and the receiving case of the other case. Therefore, even when an external force is applied when the external connector is attached to or detached from the connector inserting portion, the branch tab or the branch circuit is provided. There is no risk of rattling or sinking of the body.

Also, by providing the insertion groove in the seat of one case, the tab connection portion is positioned, so that the alignment of the branch tab group can be adjusted and the other case can be mounted (the branch tab can be inserted into the tab insertion hole). Insertion work) becomes easy.

Hereinafter, the above configuration and operation will be specifically described with reference to the drawings showing the embodiments. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

〔Example〕

2 and 3, A and A 'denote branch circuit bodies, B denotes an upper case made of synthetic resin, and B' denotes a lower case.

Branch circuit body A 'is the branch circuit body A and the basic structure is the same, one of the tabs connecting piece 6b ₁ of the upper tab connection portion ₆₁ and the other tab connecting piece 6b ₂ is a bus bar 5 of the adjacent A branch tab 7 having a total of five poles is extended so as to intersect.

In the plurality of branch circuits A and A ', the bus bars 5 are arranged in parallel at a constant pitch, and the branch tabs 7 of each branch circuit are indicated by arrows.
As shown by P and P ', they are accommodated in both cases B and B' in a state of being aligned in a direction orthogonal to the bus bar 5.

On the outer surfaces of the upper case B and the lower case B ', two connector insertion portions 10 and three connector insertion portions 10' respectively correspond to the upper and lower branch tabs 7 of the branch circuit bodies A and A '. The tab insertion holes 8 are arranged in rows in each connector insertion portion.

On the bottom wall 11 of the lower case B ', a plurality of seats 12 for the tab connecting portion 6 above each branch circuit body A, A' are provided with the arrow P
The tabs 12 are formed on the upper end face of the receiving seat 12 with insertion grooves 13 for the tab connecting pieces 6b of the tab connecting portion 6 formed on both sides thereof.

As shown in FIG. 3 in an enlarged manner, the seat 12 is columnar,
An insertion gap S of the bus bar 5 is ensured between the adjacent receiving seats 12, 12, and a tapered portion 13 a for insertion guide is provided at an upper end opening of the insertion groove 13.

On the other hand, on the inner surface of the ceiling wall 11 'of the upper case B, as shown in FIG. 4, a plurality of seats 12' for the tab connecting portion 6 below each of the branch circuit bodies A and A 'protrude. Have been.
The receiving seat 12 ′ has the same dimensions as the receiving seat 12, but does not include the insertion groove 13.

Reference numerals 14 and 15 denote locking claws constituting locking means for the upper and lower cases B and B '.

 The branch junction box is assembled as follows.

As shown in FIG. 4, the branch tab 7 below the branch circuit body A penetrates through the tab insertion hole 8 of the lower case B 'and projects to the connector insertion portion 10'.

At this time, the receiving seat 12 of the lower case B '
Since the tab 13 is provided, the tab connecting piece 6b of the upper tab connecting portion 6 is guided by the tapered portion 13a and is smoothly introduced and fixed into the insertion groove 13. As a result, the group of branch tabs 7 above the branch circuit body A is positioned, so that the branch tabs 7 are aligned with the tab insertion holes 8 of the upper case B.

Then, the upper case B is covered and the locking means 14, 15
To lock the lower case B '.

As a result, the lower tab connecting portion 6 of the branch circuit body A is located between the seat 12 'of the upper case B and the lower case B', and the upper tab connecting portion 6 is located on the seat 12 (difference of the lower case B '). 13)
And the upper case B.

Incidentally, just as gripped in the case of the branch circuit body A 'having a branched tabs 7 5-pole branch circuit body A, but is fixed, said tab connection portion _61, as shown in FIG. 5, both sides The tab connecting pieces 6b ₁ and 6b ₂ are positioned and fixed over three receiving seats 12 and two receiving seats 12, respectively. Therefore, the number of poles of the branch tab 7 provided on one tab connecting portion 6 can be arbitrarily increased or decreased.

In the above, an example in which the insertion groove 13 is provided only in the receiving seat 12 of the lower case B 'has been described. However, this can be omitted, or it can be provided also in the receiving seat 12' of the upper case B. Good.

[Effect of the invention]

As described above, according to the present invention, a branch circuit body is used in which branch tabs are provided in a staggered manner on both upper and lower edges of a bus bar of a strip, and these are accommodated, and the connector insertion corresponding to the lower case is also used. Since the attachment portion is provided, it is possible to provide a compact branch junction box having a limited size and a large number of circuits.

In addition, the tab connecting portion of each branch circuit is securely sandwiched and fixed between the seat of one case and the seat of the other case, so that the branch tab may have a problem such as rattling or depression. In particular, when the receiving seat is provided with an insertion groove for positioning the tab connecting portion, the alignment of the branch tab is ensured and the workability of assembling the branch connection box is improved.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a perspective view of a branch circuit body, FIG. 2 is an exploded perspective view of a branch connection box, and FIG. 3 is a seat of FIG. FIG. 4 is a cross-sectional view of a main part of an assembled state of the branch junction box, FIG. 5 is a plan view showing an assembled state of the branch circuit body A ′ and the seat 12 of FIG.
FIG. 6 is an exploded perspective view of a conventional branch connection box, and FIG. 7 is an enlarged perspective view of a group of bus bars 5 in the same. A, A '… Branch circuit, B, B'… Upper (lower) case, 5…
Bus bar, 6, 6 ₁ … tab connection part, 6 a… rising piece, 6 b, 6 b ₁ ,
6b ₂ … tab connection piece, 7… branch tab, 8… tab insertion hole, 10,
10 ': Connector insertion part, 12, 12': Receiver, 13: Insertion groove.

Claims (2)

(57) [Scope of request for utility model registration] 1. A branch circuit comprising a plurality of branch tabs projecting vertically from tab connecting portions provided in a staggered manner on both upper and lower edges of a strip-shaped bus bar; Are arranged in parallel at a predetermined interval, and a pair of upper and lower cases are accommodated in a state in which upper and lower branch tab groups of each branch circuit body are aligned in a direction orthogonal to the bus bar, and the upper and lower branches are respectively provided on outer surfaces of both cases. A plurality of stud-shaped connector insertion portions corresponding to the tab group, and a seat for supporting the tab connection portion on the inner surface of the other case opposite to the case where the branch tab connected to the tab connection portion protrudes. And the upper and lower branch tabs of each branch circuit body are respectively projected through the tab insertion holes of the upper and lower cases to protrude into the connector insertion portion, and the upper and lower tab connecting portions are connected to one case and the other case. Branch connection box, characterized in that the clamped fixed between the seat of. 2. An insertion groove for a tab connecting portion is provided in at least one receiving seat of said pair of cases.
Branch junction box.