SU1705817A1 - Keyboard - Google Patents

Abstract

This invention relates to electronic pen technology, in particular to input-output devices. The aim of the invention is to simplify the design. The keyboard contains photosensitive elements 1, a reflector 2, keys 3 made of an elastic material, light sources 5, a printed circuit board with 6 control chains, a reflector rod, a bottom 11 and a top 12 bases. The key is a sheath of elastic material in which the mirror reflector is located. The board is made with protrusions in which photosensitive elements are placed in the air gap. 3 il.

Description

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The invention relates to the field of control of electronic devices, in particular to input / output devices,

keyboards.

Of the known devices for controlling electronic systems, the closest technical solution is device l. Vgzodz information

This device | : Ocht Kl about the case, printing item-atu with chains of management, keys, otr9Zhg those; g-, v-t but leyny at an angle of 45 ° to the axis of the city of.ishi, the primary elements of each key, the light source

8 and one of the three-key keys has a tip leg, the end of which is attached to the ogre-i arm and, in addition, to reflect. There is a light when the i key is not pressed. ,,, i When the case is mounted, the upper unit with ... lichmi-okchami, in which the ends of the legs of the key are located with the reflection / um. o, cpu with the upper surface and upper flare located the lower plate and brackets, which ensure the operation of the spring. In the device :: on the device, on the board, there is also a lower unit with holes of figure-shaped form, in which the size of the sogs located on the board in the photo frame is ii you.

Konegrukii ;, a well-known input device for infMoTsI: complex and does not provide a dietary measure. A chm-jor device with a known area is applicable from -: - 1.:.-;. ohm and romoedkost: he jt.-ni, applied n small and micron, -; i s :) they are iiste ah managers.

ila-Jo .. j g cest; en; 1st failure gzgkom evist -. about us | - Oh; on the complexity of the design.

The goal of ioo ;.) is vnPolJAenie co1 .CTpv - .i. (..mayatures to control the zlemr ;. device1.

.-;,; .; v.; ru doshgavtsl those that will arrange .. ;;). .: is a shell of the morning; The material that is embedded is more dry. Inside

Elastic Ltd. Oh; CHChI if. p 1 KLZBSHSHII) RESOPOZOGOEG i.j of.kayul. The plaza is executed with, 1) with: on the surfaces of which are in (the gap is located fotoch / 1L in: iv.f b. .Ylement; air npoMe; j; zh is between the platform and

El.pXH :. OCHOii .N.-i,

On f-ir.l rrBA, the device is lane, general view: on f ..-, d.2 explanation of the principle of action, -:,; ,, tura (a) in the idle position, C) - by pressing the button); figure 3 - ioKTpi i -: r;.: - J-: scheme.

:; l, 31; a; uCh c1 contains photosensitive zlv - - nty 1, reflector 2, key

3, sheath A made of elastic material, light sources 5, printed circuit board 6 with control circuits, protrusions 7 on the board, air gap 8, reflector rod 9, housing

10, the lower base 11, the upper base 12.

Key 3 is a sheath 4 of resilient material mounted into the upper part of the body 10. Reflector

0 2 on the rod 9 is located inside the key 3 itself, inside the elastic shell 4. This technical solution allows to simplify the design, eliminating special parts that protect the reflector 2

5 from light entering the inoperative state and returning the reflector to its original state. Board b is made with protrusions 7 on the upper surface. The board 6 is manufactured in one operation (casting or stamping) as a monolithic structure with protrusions 7 designed to position the photosensitive elements 1 between them. The photosensitive elements 1 are silicon photoconductor manufacturers having a thickness of not more than 0.5 mm, with an increased sensitivity to vertically incident light of high intensity and insensitive to light falling at an angle of less than 45 ° to the legal umbrella. Such photosensitive elements 1 make it possible to carry out a board 5 with protrusions 7 with a height of 0.5-1 mm, which does not make it difficult to carry out and ensures that there is no light falling on

5 photosensitive element 1 and its operation, its key 3 is not pressed.

The proposed execution of the board b, photo-impacting elements 1 and their placement does not complicate the manufacture of the board 6,

0 allows you to simplify the design by eliminating special parts that protect the photosensitive element 1 from light inoperative state, simplify the installation and manufacture of the keyboard and improve the accuracy of its operation.

The air gap 8 is located between the upper base 12 and the board 6, in the protrusions 7 of which photosensitive elements 1 are placed under the keys, also located in the air gap 8. The area of the primary sensitive elements is comparable with the projection area of the reflector 2 on the board 6.

The housing consists of two molded (stamped) parts: the lower base 11 and the upper base 12. The housing is sealed at the junction of both bases after mounting inside the board 6 with control circuits and photosensitive elements 1 in the projections 7 of the light sources 5.

A keyboard for controlling an electronic device allows it to be used in any of the most microminiature systems, which greatly expands the functionality of the keyboard.

The keyboard works as follows.

When pressing the elastic shell 4 of the key 3, the reflector 2 is lowered from the key 3 into the air gap 8, the rays coming in the air gap 8 from the light sources 5 located in the hull H, and extending parallel to the board 6 and perpendicular to the axis of the key 3, along which the rod 9 is mounted, fall onto the reflector 2 at an angle of 45 ° to the axis of the reflector 2 and are reflected from it. The reflected rays of light are directed at an angle of 90 ° with respect to the rays coming from sources 5 of the light and perpendicular to the board 6 with a control circuit in which the photosensitive element 1 is embedded. The reflected rays of light fall on the photosensitive element 1, from which the trigger signal This key 3 enters the control circuit.

0

After releasing the key 3, the elastic shell 4 returns to its original state, respectively, the reflector 2 rises.

Claims (1)

In the off position of the keys 3, the rays of light from the light sources 5 freely pass through the air gap 8 parallel to the control board b with the control circuits and do not fall on the photosensitive element 1, the signal does not enter the control circuit. Claims of the invention A keyboard comprising a lower base on which a printed circuit board is located, an upper base with slots, keys, below each of which is printed 5 the board houses a photosensitive element, a reflector mounted on the rod at an angle of 45 ° to the key axis, light sources, characterized in that, in order to simplify the keyboard, the key is made of elastic material and is located on the upper base; with a reflector, protrusions are made on the surface of the printed circuit board, in which photosensitive elements are placed. but b) FIG. 2 From QL + & Source, power Fig. 3 Control chain TO. 0