JPS59163887A - Method of wiring printed board pattern - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a wiring method for printed board patterns, and more particularly to a pattern wiring method for connecting adjacent lands.

(b) Prior Art and Problems FIG. 1 is an example of a conventional printed board pattern wiring method, in which (A) is a plan view and (0) is a plan view showing the main part of (A).

In (A) of Figure 1, 1++ 1t+ 1s, 21
12. I 2s+3,,3. , 3. are rectangular lands arranged on the basic grid of the printed board,
A through hole 4 is provided approximately at the center of each land. 5. ,5. is a pattern that connects non-adjacent lands. Land row 1. Pattern 5. provided on the auxiliary grid between ~1° and land rows 21-23. One terminal is bent halfway toward the center of the land 1° and connected to the corner of the land 13. Similarly, land row 2. ~23 and land row 3. ~3. One end of the pattern 52 provided on the auxiliary grid between
It is bent toward the center of the iron land 23 and connected to the corner of the land 23. Adjacent lands 11 and 1. What is
They are connected by a pattern 61 provided on a straight line connecting the centers of each land, and adjacent lands 2. and land 2, and the adjacent land 3! and lands 33 are connected to the patterns 6, 6, . are connected to each other.

In this way, adjacent lands are connected in a linear pattern so as not to interfere with the wiring of patterns connecting other distant lands.

However, after creating the pattern and land, the through-holes are not created by aiming at the center of each land, but by using the reference line of the printed circuit board as a base and drilling the through-holes using an NC drilling machine, for example. After hole drilling is completed, the pattern and land are printed using the same reference line as a reference, and the center of the land and the center of the through hole do not necessarily match depending on the accuracy of the drilling.

Therefore, if fHI is land 1 as shown in Figure 1 (0)
There is a risk that the connection between the through ball turn 6 of No. 2 and the land 12 may be broken.

(c) Purpose of the Invention An object of the present invention is to provide a pattern wiring method that eliminates the above-mentioned conventional problems.

(d) Structure of the Invention In order to achieve this object, the present invention connects adjacent lands using a plurality of putters.

(e) Embodiments of the Invention The present invention will be described in detail below with reference to illustrated embodiments. Note that the same reference numerals indicate the same objects throughout.

FIG. 2 1 shows one embodiment of the present invention. (A) is a plan view of a pattern, and (A) is a plan view showing the main part of (mouth) baldness.

In the figure, adjacent square lands 1 and 11 are shown.

2, 2, 3t and 33 are connecting lands, respectively. On both 11th floors, sandwiching the straight line connecting the centers of Land 1 and Land 11, there are two patterns 7 parallel to the center line.
1a+71b is formed. Each pattern 7
The line printing outside the center line of the land 1a+71b coincides with the edge line parallel to the center line of the land 1 and land 12. Therefore, pattern 71a
The distance between and 7,b is land 1.

The land 1 is formed to have the maximum distance in the plane between the land 1 and the land 1. Land 2, Land 2, and Land 3
! and 3, are similarly formed patterns 7, a and 7, h
5 and patterns 73a and 7,b, respectively.

In this way, the adjacent lands are absorbed in a two-striped pattern, so for example, as shown in Figure 2 (opening), the through hole 4b of the 3-land 1t is significantly offset from the center of the land 1. The pattern 71a is provided at the connection edge of the pattern 71a, and even if the connection between the pattern 7,a and the land 1 is broken, the connection between the land 1 and the land 1 is not broken due to the patterns 7,b.

Note that creating two patterns for connecting adjacent lands in this way is done using CAD (Computer Aided Design).
d Design) Patterns are automatically created by setting rules in advance in the design process, so there is no need for troublesome work in terms of design or manufacturing.

Furthermore, unlike the illustration, the present invention has the same effect as the illustrated example even if the land is circular or the through hole is square. Furthermore, there may be two or more patterns for connecting lands that are separated from each other.

(f) As described in detail of the invention, the present invention eliminates the risk of disconnection of the pattern connecting adjacent lands even if the center of the land and the center of the through hole deviate; In terms of the above, it is a printed board pattern wiring method that has excellent practical effects, with almost no change in the number of man-hours required from conventional methods.

[Brief explanation of the drawing]

In Fig. 1, (A) is a plan view of a conventional pattern, ((a) is a plan view showing the main part of (A), and (A) is a plan view of a pattern of an embodiment of the present invention. , (opening) is a plan view showing the main part of (a). In the figure II, it. ls, 2t. 2t, 2s. 3+
, 3t, 3g are lands, 4. 4al 4b is a through hole, s,1 51+J+ s,+ 6,, 7,am
'y, b. 72a+ 7th+ 7sa+7sb each shows a pattern. Figure 2 (illustration 2 Figure 453-

Claims (1)

[Claims] A printed circuit board pattern wiring method characterized by connecting adjacent lands using a plurality of parallel patterns.