JPH0562063U - Printed wiring board - Google Patents

Abstract

(57) [Summary] [Object] To provide a printed wiring board which is easy to divide in a dividable printed wiring board and has less unevenness on the divided surface after division. [Structure] The dividable printed wiring board 10 is divided into printed wiring boards 10a, 10a to be incorporated into equipment or the like.
An extra piece 11 is arranged around b. A plurality of elongated holes 13 are formed in the extra piece 11 with the outline 12 as the outer edge of the printed wiring board 10a (10b) as a reference and one side in the longitudinal direction being overlapped with the outline 12. Also, the long hole 1
A perforation hole 1 is provided with a contour line 12 as a tangent line between 3 and 13.
4 has a diameter smaller than the gap width of the long hole 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dividable printed wiring board dividing structure.

[0002]

[Prior Art]

 When soldering electronic parts etc. to a printed wiring board, one collective print is formed by arranging several printed wiring boards molded with glass epoxy resin etc. to automate mounting and soldering of electronic parts. It is often used to mount electronic components on a wiring board, solder them, and then divide them. Conventionally, in this type of divided structure of a printed wiring board, there is one in which a perforation hole 101 is provided in a printed wiring board 100 as shown in FIG. 8. According to this printed wiring board 100, the perforation hole 101 is formed. Along with that, it is divided into a printed wiring board 100a and a printed wiring board 100b as shown in FIG.

Further, as shown in FIG. 10, a plurality of elongated holes 111 are formed in the printed wiring board 110, and along the elongated holes 110a, a printed wiring board 110a and a printed wiring board 110b are formed as shown in FIG. A printed wiring board 110 divided into two is also known.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional printed wiring board division structure, in the printed wiring board 100 of FIG. 8, the division surface after division becomes a fine comb tooth shape as shown in FIG. 9, and finishing work is required. . Further, in the printed wiring board 110 of FIG. 10, as shown in FIG. 11, there are many divided surfaces that are smoother than the printed wiring board 100, but it is difficult to divide because the connecting portion 112 is long. There is a problem, and it is conceivable to shorten the connecting portion 112 in order to solve this problem. However, if the connecting portion 112 is shortened, the connected state becomes unstable, and the connecting portion 112 becomes unclear when the electronic component before division is mounted. There was a problem that it might break.

Therefore, in order to solve the above-mentioned problems, an object of the present invention is to provide a printed wiring board which can be easily divided and can be divided with less unevenness on the divided surface after the division.

[0006]

[Means for Solving the Problems]

 Next, means for achieving the above object will be described with reference to FIGS. 1 to 6 corresponding to the embodiment. The printed wiring board of the present invention has a plurality of long holes 3 and 13 formed at divided portions for dividing the printed wiring board, and a miss hole formed between the long holes 3 and 13 and the long holes 3 and 13. It is characterized in that it is provided with a mesh hole 4, 14, 14a.

[0007]

[Action]

 By the plurality of long holes 3 (13) formed in the divided portion of the printed wiring board and the perforation holes 4 (14, 14a) formed between the long holes 3 (13) and 3 (13) , It can be easily divided, and the unevenness of the divided surface after division is reduced.

[0008]

【Example】

 1 is a plan view showing a first embodiment of a printed wiring board according to the present invention, and FIG. 2 is a plan view after division in FIG. As shown in FIG. 1, in the printed wiring board 1 according to the first embodiment, a dividing line 2 that divides the printed wiring board 1 into a printed wiring board 1a and a printed wiring board 1b is a dividing line 2, and the dividing line 2 is a center line. A plurality of long holes 3 are formed at regular intervals. A perforation hole 4 having the same diameter as the gap width of the long hole 3 is formed between the long holes 3 with the dividing line 2 as the center line.

As shown in FIG. 2, according to the printed wiring board 1 having the above-described structure, the perforation holes 4 are provided between the long holes 3 and 3 so that the printed wiring board 1 can be easily divided along the dividing line 2. it can. Further, it is possible to reduce the unevenness of the divided surface after the division. In the above-described first embodiment, the gap width of the long hole 3 and the diameter of the perforation hole 4 are the same, but if the dividing line 2 is the center line, the diameter of the perforation hole 4 is the same as that of the long hole 3. It may be smaller than the gap width, and in this case, the unevenness of the divided surface after division becomes smaller.

Next, a second embodiment will be described with reference to FIGS. 3 to 6. As shown in FIG. 3, the printed wiring board 10 of this embodiment is divided into a printed wiring board 10a and a printed wiring board 10b to be incorporated in a device or the like, and an extra piece 11 is provided around the printed wiring board 10a and the printed wiring board 10b. Then, as shown in FIG. 4, with reference to the outline 12 that is the outer edge of the printed wiring board 10a or the printed wiring board 10b, one side in the longitudinal direction is overlapped with the outline 12 to form a plurality of elongated holes 13. It is provided in the piece 11. A perforation hole 14 having a diameter smaller than the gap width of the long hole 13 (one-half diameter in the figure) is provided between the long holes 13 with the outer shape line 12 as a tangent line. There is.

As shown in FIG. 5, according to the above-described printed wiring board 10, one side in the longitudinal direction of the elongated hole 13 is overlapped and punched on the outline 12 which is the outer edge of the divided printed wiring boards 10a and 10b. When the printed wiring board 10a and the printed wiring board 10b are divided by forming a perforation hole 14 having a diameter smaller than the gap width of the long hole 13 with the outer shape line 12 as a tangent line between the long holes 13 and 13. Is divided from the center line 12a shared by the individual perforation holes 14, and the convex portion is only the radius of the perforation hole 14 from the outer shape line 12, so the prescribed shape is not required to be finished with a file or the like. Obtainable.

Further, in order to improve the accuracy of the outer edges of the printed wiring boards 10a and 10b, it is sufficient to reduce the diameter of the perforation holes 14 as in the first embodiment. Furthermore, as shown in FIG. Perforation holes 14a having the line 12 as the center line may be formed. As a result, the printed wiring boards 10a and 10b are divided on the outer shape line 12, so that it is possible to almost eliminate the convex portions protruding from the outer edges of the printed wiring boards 10a and 10b.

Further, since the extra pieces 11 are arranged so as to surround the outer sides of the printed wiring boards 10a and 10b, the printed wiring board 10 does not bend when electronic components are mounted and soldered. Therefore, when a conventional printed wiring board with a thickness of 1.0 mm or less is placed on the automatic mounting machine, if the size of the printed wiring board is large, it cannot be placed on the automatic mounting machine due to bending, and the size is limited. However, since there is no bending (150 mm x 150 mm or less), a printed wiring board of a large size (for example, 220 mm x 210 mm) with a thickness of 1.0 mm or less can be mounted on the automatic mounting machine. Further, by leaving the copper foil on the extra piece 11, the flexure of the printed wiring board 10 can be suppressed more than the above.

Then, even in the printed wiring board 20 having a complicated shape after division as shown in FIG. 7, it is possible to divide the divided portion in a certain direction (horizontal direction in the drawing) by using the above-described division structure. By disposing the electronic parts, the electronic parts can be easily divided by hand without using a jig when the electronic parts are mounted and soldered, and the printed wiring boards 20a and 20b having no unevenness can be obtained.

[0015]

[Effect of the device]

 As described above, the printed wiring board according to the present invention has an effect that it can be easily divided and the unevenness of the divided surface after division can be reduced.

[Brief description of drawings]

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

FIG. 2 is a plan view after division in FIG.

FIG. 3 is an overall configuration diagram showing a second embodiment.

FIG. 4 is an enlarged plan view of an essential part in FIG.

FIG. 5 is a plan view after division in FIG.

FIG. 6 is a plan view showing a modification of the second embodiment.

FIG. 7 is an overall configuration diagram of a printed wiring board having another configuration.

FIG. 8 is a plan view when only a conventional perforation hole is used.

9 is a plan view after division in FIG.

FIG. 10 is a plan view when only a conventional long hole is used.

11 is a plan view after division in FIG.

[Explanation of symbols]

 3, 13 ... Long holes, 4, 14, 14a ... Perforated holes.

Claims (1)

[Scope of utility model registration request] 1. A plurality of elongated holes (3, 13) formed in a divided portion for dividing a printed wiring board, and perforated holes (4, 14,) formed between the elongated holes. A printed wiring board comprising: 14a).