SU832640A1 - Device for switching electric circuits - Google Patents

Description

(54) DEVICE FOR ELECTRIC COMMUTATION

CHAINS

I

The invention relates to electrical engineering and can be used for simultaneous switching of a group of electrical circuits, for example, in operational communication switches.

A device for connecting wires of different phases is known, which contains spring elements that are made in the form of truncated cones, the small base of each of which is connected to a clip, and the rod rod is made of fiberglass and attached to the middle turns of the spring elements 1.

A disadvantage of this device is the impossibility of switching several electrical circuits.

It is also known a device comprising a body made in the form of a hollow cup, a spiral tonic spring made of a tape, located inside the body, the cone of which faces the bottom of the body. and interacting with the element of its reciprocating movement.

The known device provides the most reliable contact, since the contact occurs simultaneously at many points 2.

However, this device does not allow simultaneous switching of more than one electrical circuit.

The purpose of the invention is to extend the functionality of the device.

The goal is achieved by the fact that the device is equipped with a lid and contacts located on the end surface of the lid, the spring is made of electrically insulating material, one coil of which interacts with the lid, and on other surfaces of the coils is made of a sector of electrically conductive material in contact with the contacts of the lid.

FIG. 1 shows a general view of the device, a section; in fig. 2 - the same, bottom view; in fig. 3 - the same, top view; in fig. 4 shows section A-A in FIG. one.

Claims (2)

The device for switching electrical circuits consists of a spiral conical spring 1, body 2, button 3, being the element of reciprocating movement of spring 1, commuting contacts 4, conductive sectors 5, cover 6. The device also contains an end 7 turns of the spring of the largest diameter, I do not have, its cable is w, its coating. Pins 4 are brought to terminals 8. Spiral conic spring 1 is made of electrically insulating material of the type "Adhesive tape, produced in the USA, which is made of fiberglass filaments and has a complex structure, with a thickness different from each layer of 0.025 m. The spring can withstand several billion load cycles. It can be metallic. However, in this case, an electrically insulating coating should be applied to its surface. On the lower ends of the spring 1, conductive sectors 5 insulated from each other are applied (in Fig. 4 they are conventionally shaded). The housing 2 is made in the form of a hollow cup, covers a coil of the spring 1 of the largest diameter. At the end of the cover 6, switched contacts 4 are mounted in the form of rectangular strips made of conductive material, such as brass. The drawing conventionally shows four pairs of switched contacts 4, but the device design, if necessary, allows to increase the number of pairs of switching contacts 4. The butt 7 of the coil of the largest diameter does not have a conductive coating and in the initial state, when the spring is not pressed, rests on the switched contacts 4, resulting in a message open. The upper part of the spring 1 is associated with the button 3. The device operates as follows. When the button 3 is pressed, the spring 1 is compressed and at the lower ends of the compressed spring 1 conductive sectors 5 are formed, which cover the pairs of switching contacts 4, forming the necessary number of switching circuits, in this case four. The clamping of the spring 1 in the depressed state can be carried out in various ways. After the force of the button 3 is removed, the spring 1 returns to its original (uncompressed) state and the circuits switched by contacts 4 are opened. The positive effect of the invention is as follows: a) simultaneous switching of a group of electrical circuits with high reliability is ensured by the fact that the conductive sectors at the ends of the coils of the spring create a large switching surface with contacts, for example, with a cup-shaped case diameter of 8 mm, up to eight electrical circuits are switched ; b) the switched contacts are protected from direct contact with dust and moisture on the contact surfaces due to the tightness of the device body, which is of great importance for military communications equipment; c) wear of the working contact surfaces is practically eliminated, since there are no rubbing parts; d) the design of the device is simple. The present invention allows for the creation of reliable, compact switching devices, which is especially important for special switching communication equipment. Claims An apparatus for switching electric circuits, comprising a housing made in the form of a hollow cup, a spiral conical spring made of a tape located inside the housing, the cone of which faces the bottom of the housing and interacts with an element of its reciprocating movement, characterized by that, in order to expand the functionality of the device, it is equipped with a lid and contacts located on the end surface of the lid, the spring is made of an electrically insulating material The bowl, one turn of which interacts with the cover, and on the other surfaces of the turns, sectors of electrically conductive material are made in contact with the contacts of the cover. Sources of information taken into account during the examination 1. USSR author's certificate No. 630690, cl. H 02 G 7/12, 1972. 2. USSR author's certificate number 626459, cl. H 01 R 39/24, 1971. FI.3 Aa