JPH037011A - Assembly structure of bus-bar and insulating plate - Google Patents

Abstract

PURPOSE:To reduce the space for arrangement for bus bars by providing a folded overlap section to a roundabout part or an extension part of bus bars. CONSTITUTION:A circuit plate 1 is composed of plural bus bars 2A, 2B... and an insulating plate 3 on which they are arranged. A bus bars 2A has a tab terminal 4 in an expanded state, while in the bus bar 2B in the expanded state a roundabout part 5 running in stepping aside from the tab terminal 4 consists of a part 5a running along the edge of the tab terminal 4 so as to surround it and a part 5b running apart both sides of the bus bar 2A with the bus bar 2A interposed. The tab terminal 4 is caused to stand upright by folding it at the part as shown with a dotted line P. By providing a pair of folded overlap sections 6 corresponding to the parts 5a and 5b on both sides of the bus bar 5B, the length of the insulating plate 3 is shortened as compared with the case where there are no folded overlap sections 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in the assembly structure of a bus bar and an insulating plate constituting an internal circuit of an electrical connection box.

[Conventional technology]

Busbars are formed by punching and bending conductive metal plates, and branch circuits and branch terminals can be easily formed, so they are widely used as circuit components for electrical connection boxes, just like printed circuit boards.
It is used.

The problem with this bus bar is that, as shown in Figure 7 (al, (bl), if there is a tab terminal rising from under the insulating plate a or a terminal b' in the unfolded state, the bus bar must be run to avoid these. The portion C must be provided on the bus bar d, which increases the size of the insulating plate a, increases the number of unnecessary portions, and reduces the arrangement density of the bus bar.

Therefore, in Japanese Utility Model Application No. 58-63828, as shown in FIG.
A technique has been disclosed in which the size of the spacer is reduced to a', thereby saving space.

[Problem to be solved by the invention]

The conventional busbar bending method is effective in reducing the size of the insulating board, but the bending portion C' sometimes reaches a considerable height e, which is a problem in electrical connection boxes that are subject to many space limitations. The remaining parts were hindering miniaturization.

An object of the present invention is to solve the above-mentioned problems and to provide a busbar that effectively saves space by further shortening the length of the part that runs around other busbars or terminals or the height of the bent part. The object of the present invention is to provide an assembly structure for insulating plates.

[Means to solve the problem]

The above-mentioned problem is solved by providing a bus bar with tab terminals connected in an upright manner and an insulating plate, and dealing with a routing portion of the bus bar that runs around the tab terminals in an expanded state. This is achieved by providing a folding and overlapping section to reduce the installation space for the bus bar.

Of the routing portions of the bus bar that run around the tab terminals, the portions that run at the ends can be bent or folded and superimposed, as described in claims (2) and (3).

Similarly, when the bus bar is extended to avoid tab terminals, a folding and overlapping portion may be provided in the extended portion, as in claim (4).

Hereinafter, the above configuration and operation will be specifically explained with reference to drawings showing examples.

〔Example〕

In FIG. 1, ■ is a circuit board that forms the internal circuit of the electrical connection box, and is a plurality of bus bars 2A.

2B... and an insulating plate 3 on which these are arranged.

The bus bar 2A is formed by punching a conductive metal plate (not shown), and has a tab terminal 4 in an expanded state. Similarly, the bus bar 2B has tab terminals 4 in the unfolded state.
It has a handling part 5 that runs to avoid the traffic. This routing portion 5 consists of a portion 5a that runs along the end of the tab terminal 4 so as to surround it, and a portion 5b that runs on both sides with the bus bar 2A in between.

The tab terminal 4 is made to stand up by being bent at the dotted line P (see Figure 2), but since the portion 5a of the bus bar 2B protrudes from the insulating plate 3, it is bent at the dotted line to support this protruding portion. An insulating plate 3' of the size shown is required.

According to the present invention, as shown in FIG. 2, by providing paired folding and overlapping portions 6, 6 on both side portions 5b, 5b of the bus bar 2B, the length of the portion 5b is shortened, and the arrangement Space is reduced.

Therefore, as is clear from a comparison of FIGS. 1 and 2, the size of the insulating plate 3' is smaller by the width W.
) is sufficient.

In FIG. 3, the folded length of the folding and overlapping portion 6 in FIG. 2 is shortened, and two folding and overlapping portions 6' and 6' are provided on both sides, respectively.

In this case, the folding process for the portion 5b of the bus bar 2B can be facilitated.

FIG. 4 shows a structure in which the short folded overlapping portion 6' with the folded length L' in FIG. be.

In both Figures 3 and 4, an insulating plate 3 with reduced space can be used, and the height H of the folded portion 5a in Figure 4 may be made lower than the tab terminal 4 due to the folded overlapping portion 6'. You can also do it.

FIG. 5 shows another embodiment of the invention. 2 bus bars 2
In the routing portion 5 of the bus bar 28 that runs around the tab terminals 4 and 4 of C and 2D, a folding and overlapping portion 6 is provided in a portion 5a that runs at the end.

FIG. 6 shows another embodiment of the invention.

In the figure, two bus bars 2F and 2G are arranged in parallel on an insulating plate 3, and tab terminals 4 in an expanded state are attached to each end.
, 4'. Since the tab terminals 4 and 4' are developed toward the other busbar side, in order to avoid overlapping of both terminals 4 and 4', one busbar 2G is extended toward the other busbar 2G.
It has an extended portion 5c that is longer than F.

Therefore, by providing the folding and overlapping portion 6 on the bus bar 2G, the length of the extended portion 5c can be shortened (adjusted) and the two tab terminals 4, 4' can be made to stand up facing each other.

〔Effect of the invention〕

As explained above, according to the present invention, by providing a folding and overlapping portion in the routing or extending portion of the busbar that runs around the tab terminals in the unfolded state that are quickly formed on the busbar, the installation space for the busbar can be reduced. It is possible to reduce the size of the insulating plate that supports the insulating plate, and to adjust the position of the tab terminal when it is raised quickly.

In addition, among the routing parts, especially the part running along the edge of the tab terminal, it is possible to adopt either folding or folding overlapping, and by reducing the folding height, space saving of the circuit board can be promoted. I can do it.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part of a circuit board showing a developed state of a bus bar for explaining the present invention, and FIGS. 2 to 6 are perspective views of main parts showing an embodiment of an assembly structure of the present invention, respectively. , Fig. 7(a) and fbl are perspective views of main parts showing conventional assembly structures, respectively, and Fig. 8 is a perspective view of main parts showing a conventional example of an improved assembly structure of Fig. 7 (bl). 1... Circuit board, 2A, 2B to 2G... Bus bar, 3
゜3'...Insulation plate, 4,4'...Tab terminal, 5...
・Rolling part, 5a... Part running along the edge, 5b...
Parts running on both sides with the bus bar in between, 5c...extension part, 6, 6'...folding and overlapping parts.

Claims (4)

[Claims] (1) The bus bar is arranged by providing a bus bar with tab terminals connected in an upright manner and an insulating plate, and providing a pair of folding and overlapping parts in the routing portion of the bus bar that runs around the tab terminals in the unfolded state. An assembly structure of busbars and insulating plates that is characterized by reduced space. (2) Claim (1) wherein a portion of the routing portion of the bus bar that runs along the end, avoiding the tab terminal, is bent.
assembly structure. (3) A bus bar with tab terminals connected in an upright manner and an insulating plate are provided, and a folding and overlapping portion is provided on the bus bar that runs along the end of the tab terminal, avoiding the tab terminal in an expanded state, thereby reducing the space for installing the bus bar. An assembly structure of bus bars and insulation plates featuring the following. (4) A bus bar with tab terminals connected in an upright manner and an insulating substrate are provided, and a folding and overlapping portion is provided in the extended portion of the bus bar that runs around the tab terminal in the unfolded state to reduce the space for arranging the bus bar. The assembly structure of the bus bar and the insulating plate is characterized by the following.