SU1755316A1 - Device for relief signs reproduction - Google Patents

Abstract

The invention relates to methods of communication, namely, the reading of a font (characters) with the help of OSJ, and more specifically to devices for reproducing embossed Braille characters for the blind. The device for reproducing the relief signs comprises pins 1, a cover 2, a screen 3 of magnetically soft material, a housing 4, permanent magnets 5, electromagnets consisting of a core 6 of a soft material magnet and a coil 7, information zeroing coil 8, spacers 10, gasket 11. Under the top cover there is a magnetic screen with a hole, and inside the coil there is a magnetically soft core, with a permanent magnet mounted stationary between the pin and the core, 1 hp, f-ly, 1 slug.

Description

The invention relates to methods of communication, namely, the reading of a font (characters) with the help of OSJ, and more specifically, to devices for reproducing the embossed characters of the Braille alphabet for the blind.

A device for reproducing relief characters is known, comprising a housing, pins located in the housing, forming marks and electromagnets for moving the pins.

A disadvantage of this device is its large size, which does not allow it to be made up of pins used to reproduce characters, even if it is a line written in Braille.

A device for reproducing embossed marks is known, comprising a housing, pins located in the housing, forming signs, and electromagnets for moving the pins, with the electromagnets arranged one above the other.

The disadvantages of the known device are its large dimensions in height, the complexity of the execution of the housings and electromagnets, the variety of lengths of the pins, the inefficiency due to the impossibility of storing information without the cost of electricity.

The closest in technical essence and the achieved result to the proposed device is a device for reproducing embossed signs, comprising a magnetic core, a shield, a sleeve, a spring, a retaining ring, a coil, a fixed magnet.

The disadvantages of this device, taken as a prototype, are low manufacturability due to the presence of a large number of elements of the device and the need to accurately observe the ratio

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between the power of the magnet and the elasticity of the spring.

The aim of the invention is to improve efficiency by reducing switching power and technological capabilities.

This goal is achieved in that a device for reproducing embossed signs, comprising a housing, a cover with openings according to the number of embossed signs, a control winding mounted under the cover, with a fixed magnet and a movable pin made of a soft magnetic material placed inside it, and its top the part is made in the form of a buklya and is placed in the opening of the lid with a gap, according to the invention, a core and a flat screen, made of a soft magnetic material, are inserted into the device, while the flat screen is placed It is located under the lid, and the holes in the lid and in the flat screen are aligned with each other, the core is fixed inside the coil, and the permanent magnet is placed between the core and the movable pin with the possibility of reciprocating movement.

In addition, a diamagnetic spacer with holes is placed under a flat screen, and a diamagnetic spacer is installed between the bottom end of the permanent magnet and the top end of the core.

Due to the installation of a permanent movable magnet, diamagnetic spacers and a screen, an electromagnetic system is obtained having two steady states, one when the magnet is pulled to the electromagnet pole, the other when the magnet is pulled to the screen. In the first case, the pin is recessed, in the second, it protrudes from the body to form embossed marks (figure).

The invention is illustrated in the drawing, which shows a device for reproducing embossed marks.

The device comprises a pin 1, a cover 2, a screen 3 of a magnetically soft material, a housing 4, a permanent magnet 5, an electromagnet consisting of a core 6 of a magnetically soft material and a coil 7, gaskets 8 and 9, and a coil pin 10.

Pin 1 is cylindrical, with the lower end of the pin facing the permanent magnet to be made of a magnetically soft material. The core 6 is made of a magnet of a soft material and consists of a core and two pole tips — the lower cylindrical and upper rectangular for fixing the position in the housing 4. Coil terminals 10

pass through an incision in the lower pole tip.

The device operates as follows. In a static state, the constant

a magnet 5 made of high energy magnetic material, for example a cobalt-samarium alloy, can be in the first position when the magnet is pulled by the electromagnet core b and

0 pin 1 is recessed, as well as in the second position - when magnet 5 is pulled towards screen 3 and pin 1 projects.

Consider the case where magnet 5 is in the first position, with the north pole of magnet 5 facing down.

When a current pulse is fed into the coil 7 in such a direction that the north pole of the core 6 is the north pole, the magnet 5 will push away from it, rise up and

0 pushes pin 1, the top of which forms a bulge-point above the surface of cover 2. Magnet 5, by its south pole, touches screen 3 and remains in this position.

5 When pressing on pin 1 with a finger or a special plate fastened to a finger that cannot be read, with a certain effort it is detached from screen 3 and attracted to core 6, i.e.

0 is transferred to the first position. If a small current of the same direction is left in the coil 7, then when magnet 5 is detached from the screen, it will repel the core 6, which creates the impression of a spring-loaded pin. To detach the magnet 5 from the core 6, it is necessary to pass a very large current through the coil 7. To reduce it, a gasket 10 is inserted, which creates

0, a certain gap between the magnet 5 and the core 6, due to which the current required to lift the magnet 5 upwards is greatly reduced. So that pin 1 does not attract screen 3 and move freely in

5 of the opening of the cover 2, the opening in the screen 3 has a slightly larger diameter than the diameter of the pin 1. The magnet 5 can be returned from the second position to the first, i.e. reset the information if you apply a current to coil 7

0 other direction. In this case, the upper pole of core 6 will be the south pole, which will be attracted by the magnet, at which magnet 5 separates from screen 3, between screen 3 and magnet 5

5, a spacer 11 is inserted, the thickness of the spacer 11, of Pick-up, achieves a minimum pull-off current with enough interaction force between the magnet 5 and the screen 3 for reading with a finger.

Thus, an introduction to a known device of a core, a flat screen and

A diamagnetic gasket makes it more economical by reducing switching power and technological capabilities.

Claims (2)

1. A device for reproducing embossed signs, comprising a housing, a cover with openings according to the number of embossed signs, a control winding mounted under the cover with a permanent magnet and a movable pin made of soft magnetic material placed inside it, its upper part being bullets and placed in the hole of the lid with a gap, characterized by that. that, in order to increase technological capabilities, a core and a flat screen, made of A flat screen is placed under the lid, and the holes in the lid and in the flat screen are aligned with each other, the core is fixed inside the coil, and the permanent magnet is placed between the core and subspecific pin with the possibility of reciprocating movement. 2. The device according to claim 1, of tl and h a rout e e with that. that in order to increase efficiency by reducing the switching power, a diamagnetic gasket with holes is placed under the flat screen, and a diamagnetic gasket is installed between the lower end of the permanent magnet and the upper end of the core.