JPS5852578Y2 - keyboard device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a keyboard device in which a large number of key switches are mounted on a key matrix on a printed circuit board.

In conventional keyboard devices, even when a large number of key switches are mounted on a key matrix on a printed circuit board, only one address can be specified for each key switch, so each keyboard device is manufactured based on orders made to specifications. However, it is not suitable for mass production using a general-purpose production method and therefore low-cost production, and if it becomes necessary to change the address for the key switch after the start of use, internal There were drawbacks such as the need for circuit modification work.

The present invention aims to eliminate these drawbacks of conventional keyboard devices, and has developed a highly versatile keyboard device that has multiple pairs of terminal insertion holes for each key switch to accommodate multiple addresses. The purpose is to provide

Therefore, in the keyboard device of the present invention, in a keyboard device in which a large number of key switches are mounted on a key matrix on a printed circuit board, multiple pairs of switch terminal insertion holes that can correspond to multiple addresses for each key switch are provided. are provided on the printed board, and from among the plurality of pairs of insertion holes, only one pair of the terminal insertion holes of each key switch corresponding to the key address required for the application of the keyboard device is selected, and each key The present invention is characterized in that by mounting the switches and changing the direction of the switch terminal of the key switch, it is possible to convert the key address corresponding to each key switch.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory diagram showing a part of the key matrix on the printed circuit board of the keyboard device according to the present invention, in which X's are arranged in an orderly manner.

, XI, X2. The conductor next to ・・・・・・, and Y Ot
The vertical conductive wires of Y s T Y 2 +..., intersect without touching each other, and are inserted into the switch mounting hole 2 drilled on the key panel 1 near each overlap point on the plan view. In the keyboard device, each key switch 3 is mounted and arranged one by one as shown in FIG. 2, and the vertical and horizontal conductive wires in the vicinity thereof can be temporarily opened and closed.

However, in conventional keyboard devices, the combination of vertical and horizontal conductors to be connected, that is, the number of addresses, is limited to only one set per key switch according to the order specifications, so the versatility is low. This was the cause of the problems described above.

On the other hand, in the keyboard device according to the present invention,
Each key switch is provided with a plurality of pairs of terminal insertion holes corresponding to a plurality of addresses.For example, in the conventional method, as shown in FIG. ．． For the key switch 3, which does not have a pair of terminal insertion holes 5 and 6 corresponding to Y1, four addresses that are most likely to be used, for example, XIYI, X2Y2. X3Y3. X4Y4 or X
oYo,X.

Four pairs of terminal insertion holes 7, 8, 9, 10, 11, 12, 13, and 14 corresponding to Yl, X1Yo, XI Yl, etc. are provided as shown in Fig. The key switch 3 can be inserted by matching its mounting rotational position so that only the key switch 3 is used.

In addition, for applications where it is difficult to narrow down the possibility of changing each switch to four types or less as shown above, it is necessary to include more, for example, 8 pairs of spares, as shown in Figure 4. Terminal insertion holes 15, 16, etc. are provided for each switch or only for necessary switches, and each switch is rotated by 45 degrees according to its required address to provide eight address terminal insertion holes. It is also possible to insert and use it.

As mentioned above, the keyboard device according to the present invention, which has multiple pairs of terminal insertion holes for each key switch, has high versatility because it has a high degree of freedom in selecting addresses for each key switch, and can quickly respond to mid-address changes. As a general-purpose machine, it has advantages such as low cost because it can mass-produce printed circuit boards.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing a part of the key matrix on the printed circuit board of the keyboard device, Fig. 2 is a perspective view showing how the key switches of the conventional keyboard device are installed, and Fig. 3 is an illustration of the keyboard device according to the present invention. FIG. 4 is a diagram showing the arrangement of terminal insertion holes for one key switch in this embodiment, and FIG. 4 is a similar arrangement diagram of another embodiment. 3... Key switch, 4... Printed circuit board, 5, 6, 7° 8.9, 10, 11. 12, 13.
14...Switch terminal insertion hole, 15°16...
...A pair of terminal insertion holes.

Claims (1)

[Scope of utility model registration request] In a keyboard device in which a large number of key switches are mounted on a key matrix on a printed circuit board, multiple pairs of switch terminal insertion holes that can correspond to multiple addresses for each key switch are provided on the printed circuit board. Only one pair of terminal insertion holes of each key switch corresponding to a key address required for the use of the keyboard device is selected from among the plurality of pairs of insertion holes to mount each key switch. A keyboard device characterized in that a key address corresponding to each key switch can be converted by changing the direction of a switch terminal.