RU1786694C - Contact device - Google Patents

Abstract

SUMMARY OF THE INVENTION: the device comprises a dielectric base 1, contact slots 2, inlets 3, conductive ferromagnetic spring elements 4, ferromagnetic plates 5, magnet 6, ferromagnetic inserts 7, axial terminals 8 of the radio components, mounting studs 9, and The driving ferromagnetic spring elements are made in the form of a single cylindrical spiral, which allows to increase the area of contact with the axial terminals of the radio components. 2 ill.

Description

Figure 1

The invention relates to radio engineering and can be used1 in control devices for connecting radio components with axial terminals.

Known contact device containing a dielectric base, conductive contact nests with inlet holes in the form of funnels, located in the gap between the poles of the magnet, which are oriented along the longitudinal axis of the contact nests, and conductive ferromagnetic spring elements, one of the overall dimensions of which is larger the diameter of the lower hole of the funnels of the contact slots.

A disadvantage of this device is the insufficient reliability of the contact of the axial terminals with the conductive segments due to their point contact, which leads to contact bounce in the presence of a cable. :; ; . -. -

Closest to the proposed device in technical essence is a contact device containing a dielectric base, conductive

contact sockets with input holes. in the form of funnels; located in the gap between the poles of the magnet, which are oriented along the longitudinal axis of the contact nests, it is conductive with micro-magnetic spring elements, one of whose overall dimensions is larger than the diameter of the lower hole of the funnels of the contact sockets, and the current-carrying ferromagnetic spring elements are made curved with a closed surface. :

The disadvantages of this device in l -. insufficient reliability of contacting axial terminals with. conductive rings due to their point (hzrt and at several points) contact and the possibility of the occurrence of contact bounce during operation; device on moving objects.

An object of the invention is to increase operational reliability. .

. The goal is achieved by that; What about a contact device containing a dielectric base, conductive contact nests with input holes, in the form of funnels, located in the gap between the poles of the magnet, which are oriented along the longitudinal axis of the contact nests, and conductive ferromagnetic spring elements, conductive ferromagnetic spring elements in the form of a single cylindrical spiral, movably fixed in the contact socket coaxially with the inlet openings, to

at both ends of which are attached ferromagnetic plates with a radius of curvature equal to; the radius of the contact socket, and the overall dimensions of a single cylindrical spiral are selected taking into account the provision of contact of the ferromagnetic plates with the inner walls of the contact sockets.

In FIG. 1 shows a device in section; in FIG. 2 - node I in FIG. 1.

. The device contains a dielectric base 1, contact sockets 2, inlets 3, current-carrying ferromagnetic spring elements 4, ferromagnetic plates 5, magnet 6, ferromagnetic bushings 7, axial terminals 8 of the radio component, mounting studs 9.

To reduce the scattering of the magnetic field between the contact slots 2

placed ferromagnetic liners 7,

The diameter of the conductive spring element (spiral) dc and the number of its turns n depend on the distance I. which the ferromagnetic plates must pass 5

after turning on the electric current and stretching the spiral. To ensure contact with the inner walls of the sockets 2. At the same time, to ensure the operability of the device, namely, to fit

spiral to the axial output of the radio element with a diameter da and ferromagnetic plates 5 to the inner walls of the nests 2, it is necessary to fulfill the condition

 lds- (dB + dn) .n 20,

where dn is the diameter of the spiral wire;

. 3.1.4. ;.

The stiffness of the spiral in the axial direction is ensured by the appropriate choice of the coefficient of its elasticity, as well as by the use of fixing studs 9.

The device operates as follows-ZO M. . .; .

In the initial state, the conductive ferromagnetic spring elements 4 are located in the working plane of the contact sockets 2 coaxially with the inlet holes 3 and are made in the form of a single cylindrical

spirals. After inserting the radio component with axial terminals 8 and turning on the magnet 6 under the action of the field, the ferromagnetic plates are attracted to the inner walls of the nests 2, the spiral 4 is stretched.

In this case, the contact of the conductive ferromagnetic spring elements 4 with the axial terminals 8 is carried out along the entire length of the spiral, while tight spring coverage is achieved.

4 of the axial terminals 8, which leads to an increase in the reliability of contacting and the exclusion of the possibility of contact bounce in the presence of a cable.

Claims (1)

The technical and economic efficiency of the proposed device in comparison with the prototype is to increase the reliability by increasing the contact area of the conductive ferromagnetic spring elements, made in the form of a single cylindrical spiral, with axial terminals of the radio components. In addition, tight contact with the cylindrical spiral of the output of the radio component eliminates the possibility of contact bounce when using the device under the conditions of SHAKING. Formula of the invention A contact device containing a dielectric base, conductive contact slots with funnel-shaped inlets located in the gap between the poles of the magnet, oriented along the longitudinal axis of the contact sockets, and conductive ferromagnetic spring elements, characterized in that, in order to increase reliability, the conductive ferromagnetic spring elements are made in the form of a single cylindrical spiral, movably fixed in the contact socket coaxially with the inlet openings, ferromagnetic plates with a radius of curvature equal to the radius of the contact socket and the overall dimensions of a single cylindrical spiral are connected to both ends are selected so as to ensure that the ferromagnetic plates are in contact with the internal wreaths of the contact slots from the condition. ;  jrdc. - n (d8 + dn): n - 21, where dc is the diameter of the conductive spring element (spiral); p - the number of turns of the spiral ;. de is the diameter of the axial output of the radio element: dn - spiral wire diameter: The 0 distance traveled by the ferromagnetic plate when an electric current is turned on and the spiral is stretched. Fie. 1