JPH0212655Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a keyboard, and more particularly to a double-sided sheet keyboard in which key switches are arranged on both sides.

Traditionally, when giving a keyboard multiple functions,
Keyboards were made larger and many keyswitches were lined up, each key had multiple meanings, and multiple keyboards were prepared.
However, it was not always satisfactory from the viewpoint of operability.

The present invention provides a double-sided sheet keyboard that has multiple functions, is compact, and has good operability.

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a double-sided sheet keyboard according to an embodiment of the present invention, in which FIG. 1 is a partially extracted sectional view, and FIG. 2 is a perspective view showing the external appearance.

In FIG. 1, reference numeral 1 denotes a printed wiring board, on which a plurality of switches 2 are arranged on a pair of outer surfaces, one on the back and one on the front, with their operating levers 2a facing outward.

3, a pair of panels cover the printed wiring board 1 at a predetermined interval, that is, at an appropriate interval so as not to touch the operating lever 2a of the switch 2, and are placed concentrically with the tip of the operating lever 2a of each switch 2. A plurality of holes 3a having a predetermined diameter are provided. 4
is a damper sheet, which has elasticity in the thickness direction,
A plurality of holes 4a are drilled in one-to-one correspondence with the holes 3a drilled in the panel 3, and are attached to the outer surface of each panel 3 in an overlapping manner. Reference numeral 5 denotes a top sheet, which is attached to the outer surface of each damper sheet 4 in an overlapping manner. Reference numeral 6 denotes a key top, one end of which is fixed to the inner surface of the top sheet 5, and the body of which is connected to the hole 4a of the damper sheet 4 and the hole 3a of the panel 3.
The other end surface is the operating lever 2 of each switch 2.
A plurality of switches are provided corresponding to each switch so as to be in contact with the tip of the switch a. On the surface of the top sheet 5, numbers, letters, etc. representing the functions of the respective keys are displayed in correspondence with each key top 6 by means such as printing. FIG. 2 shows the appearance of a completed product in which a decorative frame is attached to the internal structure constructed in this way.

The double-sided sheet keyboard of the embodiment of the present invention constructed as described above is placed with the A side or B side facing upward, and by pressing the top sheet 5 of the desired key top 6, the damper sheet near the desired key top 6 can be pressed. 4 is compressed, the key top 6 sinks, and the switch 2 is operated via the operating lever 2a.

For example, place keys that are always used on side A, and place keys that are always used on side A.
Keys that are only used occasionally, such as for programming or maintenance, are placed on the side, and the A side is always facing upwards. If you use it in this way, it will be easy to understand when performing regular operations because there are only the minimum number of keys necessary on side A.
It is very easy to operate as there are no unnecessary keys that can cause malfunctions. When creating programs or doing maintenance, you can simply turn it around 180 degrees and place it with the B side facing up. At this time, there is no need to turn on or turn off the power or the connector, so it does not affect the system and is very convenient.

Next, FIG. 3 shows another embodiment of the double-sided sheet keyboard according to the present invention. This embodiment has a structure suitable for a large number of keys, in which two printed wiring boards 1 and 1' are placed back to back at a predetermined distance with a spacer 7 in between. A plurality of switches 2 are arranged on the outer surface with the operating lever 2a facing outward.
The other structures are the same as those in FIG. This double-sided sheet keyboard can also be operated from both the A side and the B side, and the same effect as that of the embodiment shown in FIG. 1 can be obtained.

As detailed above, according to the present invention, the size of the board required to store the same number of keys can be made smaller compared to the conventional method by making it possible to operate from both sides with keys arranged on both sides. , you can get a compact keyboard with multiple functions.
In addition, keys can be separated and placed on sides A and B depending on the frequency of use, eliminating unnecessary keys on each side, resulting in a simple arrangement that prevents erroneous operations and improves operability. You can get a much better keyboard. Furthermore, you can switch to operation on side A or B by simply turning the keyboard 180 degrees, so there is no need to turn on or turn off the power, making it extremely convenient without affecting the system.

[Brief explanation of drawings]

Figures 1 and 2 show a double-sided sheet keyboard according to an embodiment of the present invention. Figure 1 is a sectional view showing a part of it, Figure 2 is a perspective view showing the external appearance, and Figure 3 is a cross-sectional view showing an extracted part of the keyboard. 1 is a sectional view showing a portion of another embodiment of a double-sided sheet keyboard according to the present invention; FIG. 1, 1'...Printed wiring board, 2...Switch,
2a...Switch operating lever, 3...Panel,
4...damper sheet, 3a, 4a...hole, 5...
...Top sheet, 6...Key top, 7...Spacer.

Claims (1)

[Scope of utility model registration request] one printed wiring board or two printed wiring boards stacked at a predetermined interval; a plurality of switches disposed on a pair of outer surfaces of the printed wiring boards with operating levers facing outward; A pair of panels having a plurality of holes of a predetermined diameter arranged at a predetermined interval on the outside of the wiring board and concentrically with the tip of the operating lever of each of the switches, and on the outer surface of these panels. a pair of damper sheets each having a plurality of holes that correspond to the holes drilled in the panel, each of which is attached in an overlapping manner; a pair of top sheets that are attached to the outer surface of these damper sheets in an overlapping manner;
A plurality of key tops having one end surface fixed to the inner surface of these top sheets, the body portion passing through the holes in the damper sheet and the panel, and the other end surface contacting the tips of the operating levers of the respective switches. A double-sided sheet keyboard.