JPH0424743Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a busbar wiring for electrical connection by fitting bipolar female terminals to male terminals of a busbar circuit board arranged on an insulating substrate. Regarding the structure of the board.

[Conventional technology]

Conventionally, when electrical connections are made by fitting bipolar female terminals (hereinafter also simply referred to as female-female terminals) to the male terminals of a busbar circuit board arranged on an insulating board, the assembly of parts is done in the first step. This is done in the order shown in FIGS. 2 and 3. That is, in FIG. 2, reference numeral 1 denotes a busbar wiring formed by laminating a plurality of insulating substrates 2 on which busbar circuit boards 3 with male terminals are arranged (the insulating substrates other than the top layer are omitted in the illustration). board (hereinafter also simply referred to as a wiring board), 4 is a plate-shaped male terminal installed vertically on the bus bar circuit board 3, and the figure shows the insulation of the top layer from other insulation boards (not shown) laminated on the lower layer. A male terminal is shown drilled through the substrate 2. One end of a female-female terminal 5 for external connection is fitted into this male terminal 4 in the direction of arrow A. The female-to-female terminal 5 has elastic clamping arms 5b provided at both ends of a substrate portion 5a, which is slightly wider than the width of the male terminal 4, by bending both extending portions of the substrate portion 5a inward. The male terminal 4 is fitted into one of the electrical contact portions formed between the substrate portion 5a and the elastic clamping arms 5b.

After the female-female terminal 5 is fitted to the male terminal 4, as shown in FIG. The female-female terminal 5 is installed in a terminal receiving chamber 6b provided inside the housing 6.

[Problem that the invention attempts to solve]

However, when performing the above assembly using the conventional wiring board 1, the female-female terminal 5 fitted to the male terminal 4 has a substrate portion 5a wider than the male terminal 4. , depending on the clearance, it is likely to tilt in either the left or right direction as shown by the arrow C in FIG. 3 due to external force. Therefore, when the inclination of this female-female terminal 5 becomes large, the terminal accommodating chamber 6 of the housing 6
In order to avoid smooth fitting of the female-female terminal 5 to the male terminal 4 or to cause incomplete fitting, the fitting state of the female-female terminal 5 to the male terminal 4 should be checked in advance before mounting the housing 6. The disadvantage is that a separate process is required to correct the vertical position without any inclination.

Furthermore, in the case of the conventional wiring board 1, as shown in FIG. Since the creepage distance between the female and female terminals 5 is shortened, there is a risk that leakage current may occur therebetween.

The present invention has been developed by focusing on the above-mentioned drawbacks of conventional wiring boards, and maintains the female-to-female terminals 5 in a normal vertical state at all times with respect to the male terminals 4 erected on the busbar circuit board. By doing so, it is possible to improve the workability of mounting on the housing 6, and even if the female-female terminal 5 fitted to the male terminal 4 comes close to another busbar circuit board 3, no leakage current is generated, and insulation is maintained. The purpose of this invention is to provide a wiring board with improved reliability.

[Means for solving problems]

The present invention will be described in detail below based on drawings showing embodiments.

FIG. 1 shows a perspective view of the main parts of the busbar wiring board of the present invention.

In the figure, a wiring board A according to the present invention has a plurality of layers (three layers in the illustrated example) of insulating substrates 2a, 2b, 2 on which a busbar circuit board 3 on which male terminals 4 are erected is arranged.
In a busbar wiring board formed by laminating c.
A retaining wall 7 for holding female-to-female terminals 5 to be fitted into the male terminals 4 is erected on the uppermost insulating substrate 2a on which the male terminals 4 protrude, in proximity to the male terminals 4.

In the above configuration, the holding wall 7 erected on the wiring board A of the present invention keeps the female-female terminal 5 fitted to the male terminal 4 against the male terminal 4 even when an external force is applied. Any configuration is sufficient as long as it can be held substantially vertically without tilting, and in the illustration, for the male terminal 4 that protrudes from the lower insulating substrate 2b or 2c onto the uppermost insulating substrate 2a, the protruding plate surface The male terminal 4 that surrounds the entire periphery and protrudes from the top layer insulating substrate 2a is formed in a U-shape with the part facing one board surface open, but the male terminal 4 does not fit into the male terminal 4. It may be formed into a pair of opposing walls so as to hold only both sides of the female-female terminals 5 that are connected together. Further, the height of the retaining wall 7 may be slightly lower than the height of the male terminal 4 protruding from the uppermost insulating substrate 2a, that is, the height of the electrical contact portion 5c of one of the female-female terminals 5. , or may be formed integrally with the insulating substrate 2a using a plastic material or the like.

In addition, when the wiring board A of the present invention is used,
The lower part _6b1 of the terminal accommodating chamber of the housing 6, into which the female-female terminal 5 is attached, needs to be formed in a size that allows the holding wall 7 to be fitted thereinto. An external male terminal (not shown) connected to the other electrical contact portion 5c' of the female-female terminal 5 is inserted into the terminal accommodating chamber 6b of the housing 6.

[Effect]

In FIG. 1, a desired electric circuit is first constructed by laminating insulating substrates 2a, 2b, and 2c on which a busbar circuit board 3 having male terminals 4 erected at the ends is disposed, respectively.

In this case, the uppermost insulating substrate 2a has a retaining wall 7.
A structure with an upright structure is used. Next, a female-female terminal 5 is attached to a male terminal 4 protruding from the surface of the insulating substrate 2a.
Fit one end of the In this mated state, the female
The female terminal 5 is held by the retaining wall 7, and is prevented from tilting in the left-right direction or wobbling in the front-back direction, as shown by arrows C and D, even if an external force is applied.

Next, the housing 6 is fitted onto the female-to-female terminals 5, and since the female-to-female terminals 5 are vertically erected, the fitting of the housing 6 is extremely smooth.

Further, even when the female-female terminal 5 is fitted into the male terminal 4 and the creepage distance between the female terminal 5 and the bus bar circuit 3 becomes close, sufficient insulation is ensured since the retaining wall 7 is interposed therebetween.

[Effect of idea]

Since the busbar wiring board of the present invention has the configuration and operation described in detail above, it is possible to improve the workability of assembling female-female terminals, housings, etc. to the male terminals of the wiring board, and to reduce leakage current on the top surface of the wiring board. It is possible to prevent the occurrence of such problems, and there are advantages such as being able to improve the reliability of insulation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts of a busbar wiring board according to the present invention, and FIGS. 2 and 3 are illustrations of the order in which parts are assembled to a conventional busbar wiring board. 2, 2a, 2b, 2c...Insulating board, 3...Bus bar wiring board, 4...Male terminal, 5...Bipolar female terminal, 6...Housing, 7...Retaining wall.

Claims (1)

[Scope of utility model registration request] Insulating substrates on which busbar circuit boards are arranged are stacked in multiple layers, and one electrical contact portion of a bipolar female terminal is fitted into a male terminal protruding from the insulating substrate of the uppermost layer,
In a busbar wiring board in which the bipolar female terminal is housed in a housing and the other electrical contact part of the bipolar female terminal is connected to an external male terminal, at least one of the bipolar female terminals is provided on the uppermost insulating substrate. 1. A busbar wiring board comprising a retaining wall that surrounds and fits an electrical contact part of the board.