RU105U1 - Discrete cell linear encoder - Google Patents

Abstract

A discrete linear displacement sensor cell, consisting of a switching reed switch and a permanent magnet located on one axis, characterized in that the contact parts are made ferromagnetic, two contact parts are more rigid than the third, movable, one of the more rigid contact parts, centrally located on the side of the permanent magnet, does not go beyond the limit of the reed switch cylinder and serves as a conductor of the magnetic field, ensuring the constant coordinates of the movement of the control permanent magnet and operation reed switch with its minimal movements.

Description

. DESCRIPTION of a discrete cell of a linear displacement sensor with an axial arrangement of a reed switch, a permanent magnet and a shortened contact part, tK-5 NOSH 1/66, 51/27 The area in which relates to a utility model. The proposed utility model relates to linear displacement sensors, which record the achievement of a certain position in space by the control body using a reed switch and a permanent magnet controlling it as a main discrete cell. In particular, the proposed technical solution relates to end switches. Six POSSIBLE methods of relative displacement of a constant are known from the prior art. magnet and reed switch or control, which are used in various designs of sensors and other devices: parallel, horizontal, rotary, rotational, inside a ring magnet, vertical. / Sms RZH VINITI Automation and Computer Engineering, 1990, and 2, p. 7. Abstract, translation from German, / In the simplest linear displacement sensors, the permanent magnet is mounted on the non-magnetic base of the governing body and moves along, across or parallel to the reed switch installed in the sensor housing, in the initial state the permanent magnet is removed from the working gap of the reed switch, its magnetic flux flows through one of the contact parts, the Reed contact is triggered when the permanent magnet approaches, when part of the magnetic flux flows through the working gap and the level of the response flux is reached. /Cm. K.I. Kharazov. Automation devices with magnetically controlled contacts. M .: Energoatomizdat, 1990, p. 188-189, fig. 8.1. a B C D/. With this arrangement of linear displacement sensors, the disadvantage is the inconstancy of the coordinates of the magnet's movement corresponding to the operation of the reed switch. Another disadvantage of the considered designs of discrete cells of linear displacement sensors is their difficulty in operation. The closest analogue / prototype / proposed utility model is the use of linear displacement sensors as a discrete cell switching KEy-3 reed switch and a permanent magnet. The design of the switching reed switch KSh-3 is distinguished by the presence of three contact parts welded into the cylinder. In the absence of a control magnetic field, two of the three contact parts are closed. When exposed to a magnetic field, the opening of closed contact details and the closure of open. The accepted arrangement of the control permanent magnet with respect to the reed switch in the linear displacement sensors known from the prior art is different, except for the location of the reed switch and the permanent magnet on the same axis. /Cm. Yu.S. Korobkov, V.D. Flora. Electromechanical automation devices. - M.: Energoatomizdat, I9SI, p. 116.120 /.

The main disadvantage of the accepted technical solution is also the insufficient constancy of the coordinates of the magnet's movement, which ensures the opening and closing of the reed switch. In addition, with this design of the reed switch and its location with respect to the control permanent magnet, the proposed linear displacement sensors are cumbersome and difficult to manufacture and operate.

ESSENCE utility model.

The proposed utility model is intended to simplify the manufacture and operation of linear displacement sensors and improve accuracy. Its application avoids the disadvantages characterizing analogues, to achieve a compact design of linear displacement sensors and increase the coordinates of the accuracy of operation.

The proposed device consists of a reed switch with three ferromagnetic contact details, two of which are more rigid, and the third is movable. The findings of the two contact parts are located on one end side of the sealed balyaon, and the third contact part, located in the center on the opposite side, does not extend beyond the cylinder and serves as a conductor of the magnetic field created by a permanent magnet located on the same axis with the axis of the reed switch. This arrangement of contact parts inside the reed switch, their execution is different in rigidity, the relative position of the reed switch and a permanent magnet on the same axis, and the contact part located on the side. permanent magnet does not go beyond the cylinder, allows you to use a switching reed switch in the linear displacement sensor as a rammer, simplifies the design of the sensor, its manufacture, operation, provides a constant coordinate coordinates

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Cerechashchg | MG drawings

The device of the discrete cell of the linear displacement sensor.

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The discrete cell of the linear displacement sensor consists of a reed switch I and a permanent magnet 2 located on the same axis. Having the output of the contact part 3 ferromagnetic, the contact part 4 is also made of ferromagnetic material, located in the center and does not extend beyond the sealed bacon reed I. The ferromagnetic contact part 5 has less rigidity than the contact parts 3 and 4. Contact details 3 and 3 have conclusions from the end of the container opposite to the location of the permanent magnet.

In the initial state, the permanent magnet 2 is removed from the contact part 4, the contact part 2 and 3 are closed. When the permanent magnet is brought closer to the reed switch, the contact part 4 circulates a movable, less gesture 10 contact contact part 3, contact parts 22 and 3 open. When the permanent magnet is removed, the contact part 3 moves away from the contact part 4 and closes with the contact part 3 under the action of the elastic force. Thus, a heat is fixed on the path of the governing body, the permanent magnet, upon reaching or moving away from which the proposed device works like a limit switch.

(.G Karpov /

Claims (1)

A discrete linear displacement sensor cell consisting of a switching reed switch and a permanent magnet located on one axis, characterized in that the contact parts are made ferromagnetic, two contact parts are more rigid than the third, movable, one of the more rigid contact parts, centrally located on the side of the permanent magnet, does not go beyond the limit of the reed switch cylinder and serves as a conductor of the magnetic field, providing a constant coordinate of movement of the control permanent magnet and the operation reed switch with its minimal movements.