JPS5833650Y2 - Connection part between busbar circuit and external terminal - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection portion between a busbar circuit of a busbar wiring board and an external terminal.

A busbar wiring board is used as an electrical connection board with a relatively large current capacity, such as a fuse box or a control box of an automobile, and generally has a configuration as shown in FIG.

In the figure, a indicates an insulating substrate, and b, C, .

f is a male tab terminal for external circuit connection, which is connected upright at the end of each circuit.

A cover g is provided with a through hole for a group of male tab terminals, and is configured to allow the male tab terminal f to protrude from the through hole.

In addition, the cover g is formed with a mounting case for fitting a connector, which is shown by a two-dot chain line, so as to surround the group of through holes.

The connections between each busbar circuit be and the external circuit are as follows:
This method is to connect the female terminal i directly to the male tab terminal f, or to connect it to a male terminal (not shown) via a relay bipolar female terminal i'.

That is, the male tab terminal f is connected to the substrate part j of the female terminals i and i',
In this method, the elastic clamping arm is inserted through an extremely small gap between the curled end l and the elastic clamping arms formed on both sides of the clamping arm.

In the above busbar wiring board, the first group of male tab terminals is connected to the insulating board a.
standing upright against

Therefore, the male tab terminals f are easily bent during the process of assembling the wiring board, such as putting on the cover g, and it is extremely troublesome to pass the male tab terminals one by one through the through holes.

In particular, if even one of the female terminals is bent while protruding from the through hole, the female terminals i, i', etc. are normally stored all at once in the connector housing, so it becomes impossible to insert the entire female terminal.

Further, since each of the busbar circuits 1)-e is arranged in a plane, a large amount of space is required, and the wiring board as a whole tends to become large.

The present invention has been developed by focusing on the above-mentioned points, and by arranging the busbar circuit vertically and orthogonally to the insulating substrate, there is no problem such as bending of the male tab terminal as described above, and the busbar circuit is This makes it extremely easy to connect the circuit and external terminals.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, A indicates a bus bar wiring board, B indicates a connector housing, and C indicates an external terminal.

The busbar wiring board A is configured by combining a busbar circuit group 1, an insulating substrate 4 and a cover 8 for fixing these circuits.

In the illustrated example, the busbar circuit group 1 is composed of four busbar circuits 2 having the same shape.

The circuit 2 has a narrow strip shape and is arranged vertically and perpendicularly to the insulating substrate 4.

Further, the circuit 2 has a U-shaped terminal contact portion 3 for the external terminal C.

This terminal contact portion 3 is easily formed by bending the intermediate portion or end portion of the circuit 2 into a U-shape, and in the case of the figure, has four poles arranged symmetrically with respect to a point.

The insulating substrate 4 is provided with a housing part 5 for the terminal contact part 3, and a bottomed mounting case 6 for the connector housing B on the outer periphery thereof.

The storage section 5 has four storage chambers 5 divided by partition walls 5a.
A slit 5d for receiving the U-shaped terminal contact portion 3 is provided in the outer wall 5C of each chamber 5b.

The mounting case 6 corresponds to the slit 5d of the housing portion 5.
A slit 6b is also formed in each of the outer peripheral walls 6a, and a lock chamber 7 having a locking hole 7a is provided so as to protrude from one side of the outer peripheral wall 6a.

Note that 6C is the bottom wall of the mounting case.

A window 9 corresponding to the mounting case 6 and the lock chamber 7 is opened in the cover 8.

The connector housing B has four external terminal accommodating chambers 10 therein, and a jacket part 12 for the mounting case 6 is provided at the lower part of the outer peripheral wall 11, and a sleeve part 12 is provided on one side of the outer peripheral wall 11 at the tip. It is constructed by protruding a flexible locking arm 13 having a locking claw 13a and extending downward.

Furthermore, slits 12a are provided in the sleeve portion 12 in correspondence with the respective slits 5d and 6b.

The external terminal C has a configuration in which one side of the substrate section 14 is an electrical contact section C1 and the other side is an electric wire connection section C2.

The wire connection portion C2 has a conductor crimping piece 15 and an insulator crimping piece 16 for the electric wire, and the electric wire W is crimped and connected by the crimping piece 15.16.

On the other hand, the electrical contact portion C0 has a pair of elastic contact pieces 17 and 17' bent outward in a dogleg shape.

The contact pieces 17, 17' are integrally formed by extending the base plate part 14 and folding back this extended part.

The tip of the contact piece 17' extends into the frame piece 18 to prevent it from expanding.

Next, the assembly of the busbar wiring board A and the connection between the busbar circuit and external terminals will be explained.

First, the terminal contact portions 3 of the four busbar circuits 2 are placed in the housing portion 5.
It fits into each accommodation chamber 5b.

The busbar circuit 2 is fitted onto the outside wall 5C of the housing chamber)
5d and attachment can be carried out extremely easily by inserting it into the slit 6b of the case outer peripheral wall 6a.

Next, by covering the busbar circuit group 1 with the cover 8, the assembly of the busbar wiring board A is almost completed.

That is, the busbar circuit 2 is arranged vertically with respect to the insulating substrate 1.

Then, each circuit 2 is installed in the storage chamber 5b (Surin)
5d and 6b, and the insulating substrate 1
and is held between the covers 8 and 8.

When the connector housing B is inserted into the window 9 of the cover 8, the sleeve portion 12 enters between the housing portion 5 and the mounting case 6.

Along with this, the locking protrusion 13 a of the locking arm 13
engages with the locking hole 7a of the lock chamber 7.

As a result, the connector housing B, cover 8, and insulating board 4 are locked.

As described above, the assembly of the busbar wiring board A is extremely simple, and there is no problem such as bending of the male tab terminal f of the busbar circuit as in the conventional example shown in FIG.

Finally, when the external terminal C is inserted from the terminal receiving chamber 10 of the connector housing B, its elastic contact piece 17, 17' enters the terminal contact portion 3 of the busbar circuit 2, as shown in FIG. Pressure contact.

The terminal contact portion 3 is U-shaped and has sufficient opening spacing, and the elastic contact pieces 17 and 17' are dogleg-shaped and tapered, so that they can be easily inserted unlike conventional terminals.

In this way, the busbar circuit 2 can be connected to the external terminal C extremely easily.

In the above, an example has been described in which the terminal contact portion 3 of the busbar circuit 2 is U-shaped, but it can be made into various shapes such as U-shape, C-shape, etc. In this case, the electrical contact portion of the external terminal C C
You can change the construction accordingly.

As described above, the present invention forms a U-shaped or C-shaped terminal contact part in the middle part or end part of a busbar circuit arranged vertically with respect to an insulating substrate, and external terminals are connected to this terminal contact part. Since the busbar circuit and the external terminal are inserted and pressed together, the connection between the busbar circuit and the external terminal can be made extremely easily.

In addition, by arranging the busbar circuit vertically with respect to the insulating board and changing the connection method with external terminals, the male tab terminals do not protrude above the cover as in the past, making it easier to assemble the wiring board itself. It is suitable for downsizing because the work is easier and the space for installing the busbar circuit can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional busbar wiring board, Fig. 2 is a perspective view of an embodiment of the present invention in a separated state, and Fig. 3 is an explanatory diagram showing the connection between the busbar circuit 2 and the external terminal C. It is. A...Busbar wiring board, B...Connector housing, C...External terminal, 2...
・Busbar circuit, 3...Terminal contact part.

Claims (1)

[Scope of utility model registration request] Forming a U-shaped or C-shaped terminal contact part in the middle part or end part of the busbar circuit arranged vertically with respect to the insulating substrate,
A connection portion between a busbar circuit and an external terminal, characterized in that an external terminal is inserted into the terminal contact portion and press-contacted.