JPH027476Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to printed wiring boards, and in particular, the invention relates to printed wiring boards (hereinafter referred to as wiring boards) in which V-grooves necessary for dividing the printed wiring board (hereinafter abbreviated as wiring boards) are properly processed. This invention relates to a wiring board that can be electrically easily detected.

(Prior Art) Generally, in order to improve the efficiency of automatic mounting of electrical components, a conventional editing wiring board 10 that is edited in a concatenated manner has a conductor pattern 1a for each wiring board 1 as shown in FIG. The two formed parts are connected and edited in a continuous manner, and a margin 2 is created to provide a reference hole necessary for automatic mounting, and a V-groove is machined to create a V-groove necessary for dividing into individual wiring boards after mounting electrical components. It was a configuration applied on line 3. For this reason, it has been necessary to rely on visual inspection means to detect leakage in the V-groove machining and to detect defective locations when the V-groove machining front and back surfaces are misaligned. Therefore, these conventional detection means tend to fail in detection, and defective locations are often discovered during the stage of dividing into individual wiring boards after mounting electrical components, and when it is impossible to make corrections. In this case, the wiring board including the mounted parts will be discarded.

As one solution to problems such as machining leakage and positional deviation of these V grooves, one of the wiring boards 1 as shown in FIG.
The conductor pattern 1a is connected to the conductor pattern 1a of the adjacent wiring board 1 via the linear connection pattern 4 across the V-groove processed line 3, and on one side of the margins at both ends of the editing wiring board 10. An improved plan has been proposed in which electrical detection is performed using a check land 5 provided.

However, in the improved proposal, (a) the connection pattern 4 is connected via the conductor pattern 1a in the wiring board 1, so if a disconnection or short circuit occurs due to a defect in the conductor pattern 1a itself, the V-groove is normal. It is not possible to clearly confirm electrically whether the product has been processed. Therefore, first check whether the V-groove processing is normal using a wiring tester. Next, it is necessary to check at least twice whether the connections between the circuit patterns on each wiring board are normal. (b) Furthermore, the checking means at land 5 detects only one side of the wiring board, and the V-groove machined on the opposite side is unconfirmed. Therefore, if this inspection is performed on both sides, three checks are required, which is inefficient. (c) Furthermore, in this improvement plan, since the connection pattern 4 and the conductor pattern 1a form the same circuit, the copper of the conductor pattern 1a will be exposed by processing and providing the V groove, and corrosion and peeling of the connection pattern 4 will occur. In some cases, even pattern 1a was affected.

(Purpose of the invention) An object of the invention is to provide a wiring board that eliminates such conventional drawbacks.

(Structure of the invention) According to the invention, conductive patterns perpendicular to the planned line are provided in the vicinity of both ends of a planned line that separates a single printed wiring board into continuously edited wiring boards, and A wiring board is obtained in which through-hole conductive holes with lands connected to both ends are formed.

(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 3, 4, and 5.

FIG. 3 is a continuous wiring board 10 in which individual wiring boards 1 are successively edited, and FIG. 4 is an enlarged perspective view of the main part A of the present invention.

The conductor pattern 1a of each wiring board 1 is provided independently, and a conductive hole 6 with a land 6a is provided at a position sandwiching the V-groove processed line 3 and the blank space 2 where the automatic mounting standard is provided, and between the conductive holes 6. The V-grooved wire 3 is connected perpendicularly to the lead pattern 7 for cutting inspection. A solder resist 8 is applied to each wiring board 1 for soldering and for protecting the copper surface.

Next, as shown in FIG. 5, V-grooves are cut from the lead pattern 7 by a known cutting means around the V-groove processed wire 3 on the front and back surfaces, and then a wiring tester is used to check whether the V-grooves are completely formed. Inspect whether

(Effect of idea) As described above, the present invention has the following effects.

(i) Problems such as correction or disposal of parts after mounting due to oversights in visual inspection can be solved, and the number of visual inspection man-hours can be reduced.

(ii) By using conductive holes as the check points, detection can be performed simultaneously with the electrical inspection of individual conductor patterns, significantly reducing the number of electrical inspection man-hours.
It also became possible to detect both sides.

(iii) In addition, since there is no conductor pattern in the individual wiring board, there are no problems with the conductor pattern.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional editing wiring board, Figure 2 is a front view of a conventional improved editing wiring board with a check land, and Figure 3 is a front view of a printed wiring board according to an embodiment of the present invention. Figure 4 is an enlarged perspective view of the vicinity of the check through hole before V-groove machining in Figure 3, and Figure 5 is the
FIG. 2 is an enlarged stylus view of the vicinity of the check through hole after V-groove processing in the figure. 1... Wiring board, 1a... (individual wiring board) conductor pattern, 2... (automatic mounting reference hole provided)
Margin area, 3... V-groove processed line, 4... Connection pattern, 5... Land for check, 6... Continuity hole,
6a...Land, 7...Lead pattern, 8...
Solder resist, 10...Continuous editing wiring board.

Claims (1)

[Scope of utility model registration request] A conductor pattern perpendicular to the planned line is provided near both ends of a planned line that separates a single printed wiring board that is continuously edited, and through-hole conductive holes with lands are connected to both ends of the conductive pattern. A printed wiring board characterized by: