JPH06104540A - Printed circuit board - Google Patents

Abstract

(57) [Abstract] [Purpose] Different number of DIP switches can be mounted on the same board at low cost. [Structure] When different numbers of dip switches are mounted on the same substrate, the dip switch mounting insertion holes are arranged at positions displaced by the pitch A width of the dip switches.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board on which a dip switch used for environment setting of electronic equipment and the like is mounted.

[0002]

2. Description of the Related Art DIP switches are used to externally set the status of a device such as RS-232C interface setting and CPU clock setting when the power is turned on. However, depending on the destination, the status can be set even in the same device. If you have one DIP switch and one that requires two, 1. A method in which two boards for mounting are shared, and when only one board is mounted, one of the boards is mounted at a location to be mounted (FIG. 5).

2. Similar to the method 1 above, two boards for mounting are shared, but unlike method 1, the mounting position is determined so that a balance can be achieved when only one board is mounted. A method of creating a board with additional insertion holes and wiring patterns.

Of the above two methods, the method considered to be optimal has been adopted.

[0005]

According to the second method, the mounting position can be freely decided as compared with the first method, so that there is an advantage that the dip switches can be arranged in a balanced position regardless of the number of dip switches. is there. However, the above method 2 has a demerit that the wiring pattern becomes complicated and cannot be formed on a single-sided board, resulting in extra cost. Also,
In the case of the above-mentioned method 1, if the two mountings are balanced, only one mounting is unbalanced, which is unsatisfactory.

[0006]

[Means for Solving the Problems] Therefore, a dip switch is formed at a position displaced by the width thereof, and a signal line and a common line taken out from the dip switch are alternately wired, so that the dip switch can be used in the case of a single dip switch specification. It should be possible to mount it in the middle of mounting two switches.

[0007]

EXAMPLE FIG. 1A shows a dip switch 2 on the same substrate.
FIG. 1B is a circuit board pattern as an embodiment of the present invention in the case of individual mounting and one mounting, and FIG. 1B is a circuit diagram of the present invention in the same case. Here, by disposing the mounting insertion holes of the dip switch a3 and the dip switch b4 as shifted by the pitch A of the dip switch as shown in FIG. 1A, the dip switch a3 and the dip switch a3 are arranged as shown in FIG. Both the dip switch b4 can be mounted, and as shown in FIG. 3B, only the dip switch d6 can be mounted in the middle of the dip switch a3 and the dip switch b4. In order to enable the above arrangement, it is necessary to extract the on / off signal of the switch from the signal line 1 even when the dip switch a3 and the dip switch b4 are mounted and when only the dip switch d6 is mounted. Therefore, as shown in FIG. 1A, the common line 2 is wired so as to sandwich either one of the signal lines 1 of the DIP switch a3 and the DIP switch b4.
As a result, the signal line 1 and the common line 2 of either the DIP switch a3 or the DIP switch b4 are wired in the wiring of the DIP switch d6 mounted between the pitches of the DIP switch a3 and the DIP switch b4. The on / off signal can be taken out. In the above description, the case where two dip switches are used has been described, but it is needless to say that the same effect can be obtained by using this method even when the number of dip switches is three or more. In addition, a board pattern diagram in the case of three dip switches is shown in FIG. 2A, a circuit diagram is shown in FIG. 2B, and a mounting state on the board is shown in FIG.

[0008]

As described above, when a plurality of DIP switches are used and the specifications are smaller than that, it is possible to improve the balance when mounting the panel, and it is necessary to prepare a new board. There is no effect, so there is an effect that the cost is low.

[Brief description of drawings]

FIG. 1 is a substrate pattern diagram and a circuit diagram for realizing the present invention.

FIG. 2 is a diagram showing another embodiment of the present invention.

FIG. 3 is a diagram showing a state in which a dip switch is mounted on the board of the present invention.

FIG. 4 is a diagram showing a state in which a dip switch is mounted on a substrate according to another embodiment of the present invention.

FIG. 5 is a diagram showing a conventional example.

[Explanation of symbols]

 1 signal line 2 common line 3 DIP switch a 4 DIP switch b 5 DIP switch c 6 DIP switch d 7 DIP switch e

Claims (1)

[Claims] 1. A printed circuit board on which different numbers of dip switches are mounted using the same substrate, the mounting insertion holes of the dip switches are formed at positions shifted by the width of the dip switches, and the dip switches are taken out from the dip switches. A printed circuit board in which signal lines and common lines are alternately wired.