JPH062284Y2 - Printed wiring board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a printed wiring board, and more particularly to the structure of holes for division.

[Conventional technology]

A printed wiring board having a standardized terminal pattern for a conventional test was constructed as shown in FIG.

In FIG. 5, the printed wiring board comprises a first printed wiring board 1a having a circuit pattern 4 formed on both sides of a V groove 3 formed on the front and back surfaces thereof and a second printed wiring board 1b having a terminal pattern 2 formed thereon. And is configured to electrically connect the first printed wiring board 1a and the second printed wiring board 1b through a through-hole plated hole 6 with a seat provided on the V groove 3. After completion of the test using the terminal pattern 2, the second printed wiring board 1b was removed by folding along the V groove 3 and used.

[Problems to be solved by the device]

The drawbacks of the conventional printed wiring board described above will be explained with reference to FIG. 6, which is an enlarged view of a portion indicated by a broken line B in the vicinity of the through-hole plated hole 6 with a seat in FIG.

The conventional printed wiring board has a standard boundary line 9 for folding.
Since the V groove 3 is provided so as to cross the upper through-hole plated hole 6 with a hole, a burr 8 is formed on the seat of the through-hole plated hole 6 with a hole. This burr 8 is a sharp burr 8 as shown in FIG. 7 which is a sectional view taken along the line AA 'in FIG. 6, and depending on the handling, an operator may be injured or the printed wiring board itself may be damaged. , Has caused the product value to deteriorate significantly.

Further, when the first printed wiring board 1a and the second printed wiring board 1b are folded and broken, an electric short circuit may occur unless processing is performed so that no conductor remains on the side surface of the first printed wiring board 1a. In the above-mentioned conventional printed wiring board, as shown in FIG. 8, the through holes are broken from the apexes of the V-grooves 3 on the front and back, and the conductor remains on the side surface of the first printed wiring board 1a. Since the through-hole plated holes with seats themselves remain on the side surfaces of the first printed wiring board 1a, repair work is required to remove them.

[Means for Solving the Problems]

A printed wiring board according to the present invention comprises: a first printed wiring board having a circuit pattern formed thereon; a second printed wiring board integrally formed with the first printed wiring board and provided with a terminal pattern; Between a plurality of through-hole plated holes with seats, which are provided so as to deviate from the center on the reference boundary line for dividing the first and second printed wiring boards, and the through-hole plated hole with seats along the reference boundary line. The auxiliary holes for division provided in two, the two long holes provided at both ends of the through-hole plated holes with seats, and formed long along the reference boundary line, the first and the second holes. The second printed wiring board includes V-grooves which are provided so as to be respectively connected to the elongated holes from one end along a reference boundary line.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a printed wiring board according to a first embodiment of the present invention.

In FIG. 1, the printed wiring board is a first printed wiring board 1a on which a circuit pattern 4 forming an electric circuit is formed.
And a second printed wiring board 1b on which the terminal pattern 2 is formed. Then, the first printed wiring board 1a and the second printed wiring board 1b are electrically connected by the through-hole plated holes 6 with seats, and mechanically when the second printed wiring board 1b is finished. In order to divide into, the auxiliary hole, the long hole and the V groove 3 are provided on the reference boundary line.

The shapes of these holes on the reference boundary line will be described below with reference to FIGS. 2 to 4, which are enlarged views of a portion indicated by a broken line A in the vicinity of the through-hole plated hole 6 with a seat.

FIG. 2 is a plan view near the reference boundary line of the first embodiment of the present invention.

First printed wiring board 1a and second printed wiring board 1b
In addition, a plurality of seated through-hole plating holes 6 whose centers are deviated are provided on the reference boundary line 9, and an auxiliary hole 5 for division is provided between the seated through-hole plating holes 6. Located along the top. A reference boundary line 9 is provided on both ends of the plurality of through-hole plated holes 6 with seats.
A rectangular elongated hole 7 formed long along the reference boundary line 9 is provided, and a V groove 3 connecting from one end of the printed wiring board to the elongated hole 7 is provided along the reference boundary line 9.

In the first embodiment configured as described above, the V groove 3
Is not formed on the through-hole plated hole with a seat, burrs are not generated in the seat of the through-hole plated hole with a seat 6 as in the conventional case, and the handling is facilitated.

FIG. 3 is a plan view in the vicinity of the reference boundary line of the second embodiment of the present invention, in which the auxiliary hole 5 is inserted into the seat of the through-hole plating hole 6 with a seat.

The second embodiment also has the same effect as that of the first embodiment. Since the seated through-hole plating hole 6 remains on the second printed wiring board 1b after being further folded, the first printed wiring There is an advantage that no work is required after scraping off the conductor remaining on the side surface of the plate 1a.

FIG. 4 is a plan view in the vicinity of the reference boundary line of the third embodiment of the present invention, in which the auxiliary hole 5 is inserted into the seat of the through-hole plating hole 6 with a seat and the first printed wiring board 1a is mounted. Also has a through-hole plated hole 6A with a seat.

In the third embodiment configured in this way, in addition to the same effect as the second embodiment, when dividing the printed wiring board, it is possible to eliminate the failure of peeling the copper foil circuit no matter which is bent. You can

In addition, in the above-described embodiment, the elongated hole 7 is described as having a rectangular shape, but it may have another shape.

[Effect of device]

As described above, according to the present invention, a plurality of through-hole plated holes with seats, auxiliary holes, elongated holes, and V-grooves whose centers are biased are provided along the reference boundary line for dividing the printed wiring board. Since burr does not occur on the seat of the seated through hole, handling is easy and injury due to burr can be prevented and safety is ensured. After breaking it further, the second
Since the seated through-hole plating hole is left on the printed wiring board of No. 1, there is also an effect that the post-work is unnecessary after the through hole remaining on the first printed wiring board is shaved off.

[Brief description of drawings]

FIG. 1 is a perspective view of the first embodiment of the present invention, and FIGS.
FIG. 5 is a plan view of the vicinity of the reference boundary line of the first to third embodiments of the present invention, FIG. 5 is a perspective view of a conventional printed wiring board, and FIG. 6 is a portion surrounded by a broken line B in FIG. Enlarged view, Fig. 7 is No. 6
8 is a sectional view of the first printed wiring board when the printed wiring board shown in FIG. 7 is folded and broken. 1a ... 1st printed wiring board, 1b ... 2nd printed wiring board, 2 ... Terminal pattern, 3 ... V groove, 4 ... Circuit pattern, 5 ... Auxiliary hole, 6 and 6A ... Through hole plating hole with a seat, 7 ... Long hole, 8 ... Burr, 9 ... Standard boundary line.

Claims (1)

[Scope of utility model registration request] 1. A first printed wiring board on which a circuit pattern is formed, a second printed wiring board formed integrally with the first printed wiring board and provided with a terminal pattern, and the first and second printed wiring boards. A plurality of seated through-hole plating holes, which are provided with their centers deviated on the reference boundary line for dividing the second printed wiring board, and the seated through-hole plating holes, which are provided along the reference boundary line, are provided. Auxiliary holes for division, two long holes provided at both ends of the plurality of through-hole plated holes with seats, and elongated along the reference boundary line, the first and second prints. A printed wiring board, comprising: V-grooves provided so as to be respectively connected to the elongated holes from one end of the wiring board along a reference boundary line.