JPH0429498Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is applicable to a branch junction box used for wiring electrical circuits in automobiles, for example, in which connection between busbars or between busbars and flat plugs constituting an internal (branch) circuit is used. Regarding the connection structure.

[Conventional technology and issues]

As a connection structure of this kind, Japanese Utility Model Application No. 60-163790 discloses a plurality of elongated holes b along the longitudinal direction of a bus bar a, which is a thin band-shaped metal, as shown in FIG.
A sixth hole is provided in the long hole b, and a protrusion c is provided opposite to the central part of the long hole b, and the distance between the protrusions c and c is formed to be slightly smaller than the thickness of the metal plate a.
As shown in the figure, a device in which a terminal portion d of a bus bar a' is inserted is disclosed.

However, the busbar a' inserted into the long hole b tends to wobble in the direction of the arrow X with the projection c at the center of the long hole as the midpoint, which makes it easy to pry the projection c and make it difficult to maintain a stable electrical connection. point was a problem.

An object of the present invention is to provide a busbar connection structure that does not have such drawbacks.

[Means to solve the problem]

As shown in FIG. 1, the busbar connection structure of the present invention is such that a pair of elastic tongues 2, 2 facing an elastic busbar 1 are cut and raised to form an elongated hole 3, and the elongated hole 3 has both sides. A flat plug 4, 4' with a non-return claw 5 and a locking claw 6 protruding from the edge at appropriate intervals.
As shown in FIG. It is characterized by being pressed and held between a pair of elastic tongues 2, 2.

In FIG. 1, two elongated holes 3 with elastic tongue pieces 2, 2 are provided in the bus bar 1, but this bus bar 1 is not limited to the shape of a narrow strip, but is formed in a desired circuit pattern, and the elongated holes 3 The position and number of openings can be arbitrarily set in the bus bar 1. Also,
The parallel plug 4 is formed by bending the end of another bus bar 1', but in addition to an independent flat plug with an external connection tab 4a at one end as shown by 4', for example, a blade type fuse ( The present invention is also applied to the case where connection terminals of other electrical components, such as fuse terminals (not shown), are directly connected to the bus bar 1.

As shown in FIGS. 2 and 3, the width w of the elongated hole 3 only needs to be slightly larger than the plate thickness t of the flat plug 4, and can be made larger within the allowable range of the width W and strength of the bus bar 1. Furthermore, the length l of the elongated hole 3 is set larger than the width L of the flat plug 4, and the expansion interval _l0 of the pair of bent elastic tongues 2, 2 is the width L of the plug 4. Make it sufficiently narrower than the

[Effect]

When the flat plug 4 is inserted into the elongated hole 3 from the opposite side of the elastic tongue piece 2, as shown in FIG.
is pressed and held between a pair of elastic tongues 2, 2 and electrically connected. At the same time, the end edge of the elastic tongue piece 2 engages with the back surface of the non-return claw 5, and the locking claw 6 engages with the hole edge of the elongated hole 3, so there is no risk of it coming off vertically, and the fitting into the elongated hole 3 is prevented. The insertion depth is also kept constant.

The opening size of the elongated hole 3 is larger than the cross-sectional size of the flat plug 4, so that it can be easily inserted. When inserting,
As shown in FIG. 1, the flat plug 4 moves in the direction of the arrow Y, but the pair of elastic tongues 2,
2 come into elastic contact with each other, and the stopper action of the check claw 5 and the locking claw 6 allows for a moderate connection operation, and prevents the elastic tongue piece 2 from becoming sagging due to excessive force being applied. be able to.

[Effect of idea]

As explained above, according to the present invention, busbars or busbars and flat plugs can be connected easily and stably, and can be applied to form branch circuits in various patterns.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the connection structure of the present invention in a separated state, Fig. 2 is a partial sectional view of Fig. 1 seen from the front, and Fig. 3 is a side view of Fig. 1. 4 is a partial sectional view of the connection state shown in FIG. 2, FIG. 5 is a perspective view of a bus bar showing a conventional example,
FIG. 6 is a perspective view showing the connection example of FIG. 5. 1, 1'...Bus bar, 2...Elastic tongue piece, 3...
...Long hole, 4,4'...Flat plug, 5...Return claw,
6...Latching claw.

Claims (1)

[Scope of utility model registration request] A pair of elastic tongues facing the elastic busbar are cut and raised to form a long hole, and a flat plug with a non-return claw and a locking claw protruding from both side edges at appropriate intervals is inserted into the long hole. , the edge of the elastic tongue piece is engaged with the back surface of the check claw, the locking claw is engaged with the edge of the elongated hole, and the flat plug is pressed and held between the pair of elastic tongue pieces. The busbar connection structure is characterized by: