SU1022136A1 - Contactless key - Google Patents

Abstract

A non-contact key containing the body, the first cylindrical magnet, the first magnet sensitive element and the first keyboard head, which is located in the vertical body guides, the first cylindrical magnet is located in the horizontal body guides under the angled bevel of the first keyboard head, and h and th (c and so that, in order to reduce the size of the key, it contains a second cylindrical magnet, a second magnetically sensitive element and a second key head, piacno laid in vertical directions The hull of the housing with free movement relative to the first keyboard head, and in the horizontal body guides axially to the first cylindrical magnet, under the angular bevel of the second keyboard head, is located a second cylindrical magnet magnetically coupled to the first cylindrical magnet

Description

The invention relates to keyboard devices, by means of which mechanical and electrical devices are actuated, and more specifically to keys with contactless control, intended for manual entry of information, for example, into a channel, communications, computing, measuring and printing devices, various automation systems and It can be used in computing, telegraphy, typewriting, and instrument making, both as a separate module and as a keyboard assembled from these modules.

A known contactless key containing a capacitive magnetically sensitive element that changes its electrical parameters depending on the induction field acting on it flj.

The disadvantage of such a key is to obtain a sufficient jiiKayKUHH differential affecting the magnetically sensitive element, which is associated with structural and technological difficulties, and the presence of a recoil spring, which significantly reduces the reliability and durability of the device.

Also known is a contactless keyboard, containing an unattached ferromagnetic rod and a movable permanent magnet, embodied in the form of cylindrical rollers and arranged in horizontal guides. The movable magnet has the ability to move in the direction perpendicular to the axis of the device, when interacting with the angular bevel of the shank of the C 23 key head,

The disadvantage of this key is comparatively large dimensions.

The purpose of the invention is to reduce the size,

This goal is achieved by having a contactless key comprising a housing, a first cylindrical magnet, a first magnetically sensitive element and a first keyboard head, which is located in the vertical guiding housing, the first cylindrical magnet is located in the horizontal guiding housing under the angled bevel the first key head contains a second cylindrical magnet, a second magnetically sensitive element and a second key head located in the vertical body guides with free movement A second cylindrical magnet connected to the first cylindrical magnet is located axially in relation to the first cylindrical magnet, under the angular bevel of the second keyboard head, in the horizontal body guides, axially relative to the first keyboard head.

FIG. 1 shows a contactless key, a longitudinal section / in FIG. 2 shows section A-A in FIG. one.

The contactless key comprises a housing 1, a first 2 and a second 3 key heads, a first 4 and a second 5 cylindrical magnets, an angled bevel 6, and also the first 7 and second 8 magnetically sensitive elements.

The key works as follows.

In the diamagnetic case 1, the first 2 and second 3 key heads are installed in the vertical guide cases, and the first 4 and second 5 permanent cylindrical magnets are placed in the horizontal guide cases.

The magnets are magnetized along the axis and are located by opposite poles (the ends of the magnets are in one direction, which ensures the attraction of maglites 4 and 5 to each other.

The first and second keyboard heads emit an angled bevel b facing the moving magnet and ensuring its movement. Magnetosensitive elements 7 and 8 is installed in the housing at the end of the moving magnets 4 and 5 ..

In the initial, starting, position, the proposed contactless key and the movable magnets are in an attracted position, and the key heads 2 and 3 are in the highest position. When you press the key heads 2 or

3 aft or simultaneously at the same time it moves along the device vertical axis and its corner bevel

b move cylindrical magnets

4 and S, bringing their ends closer to the magnetically sensitive elements 7 and 8. After removing the pressing force, the interaction force of the magnets moves {rolls over; magnets to each other.

In this case, the magnet 4 or 5, acting on the angular bevel 6, lifts the keyboard head, which occupies the upper starting position. In the starting position, the magnets are in a pulled position towards each other, providing vibration resistance to the key and creating an operator's so-called sense effect of the initial state.

Thus, in one case two magnetically sensitive elements with independent control are placed, which significantly reduces the relative LESS size of the contactless key.

HELL

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1

Claims (1)

NON-CONTACT KEY containing a housing, a first cylindrical magnet, a first magnetically sensitive element and a first keyboard head located in the vertical guides of the body, the first cylindrical magnet is located in the horizontal guides of the body under the angular bevel of the first keyboard head, characterized in that, with In order to reduce the size of the key, it contains a second cylindrical magnet, a second magnetosensitive element and a second keyboard head located in the vertical guides to rpusa with the free movement of the head relative to the first key, and a horizontal guide body axially cylindrical first magnet at a second angular bevel golov- key, Ki is a second cylindrical magnet magnetically • a first cylindrical magnet. SU „. 102213 "