SU775766A1 - Magnetically-operated contact - Google Patents

Description

one

This invention relates to electrical switching devices. circuits and can be used in the design of relays, switches, limit switches and other switching devices of control, regulation, control, computing devices of various branches of technology .. to

Magnetic guided contacts are known in which ferromagnetic contact parts, sunk into a sealed container, are closed under the influence of a magnetic field of a certain size.

The disadvantage of such magnetically controlled contacts is the presence of vibration of the contact parts at the moment of their collision upon closing due to the acquisition of a moving contact part during the movement of excess kinetic energy.

The prototype of the invention is a magnetically controlled contact, containing a jS hermetic cylinder and ferromagnetic contact parts, fixed in opposite ends of the cylinder with a gap and mutual overlap of the contacting areas.

However, this device also does not allow to reduce the vibration of the contact when it is closed.

The aim of the invention is to eliminate this drawback. To achieve this goal, the contacting area of one of the contacts is made with a longitudinal notch, and the contacting area of the other contacting part is cut in the longitudinal direction into three parts, with the middle part being bent and blended parallel to the other two parts of the contacting; The latter portion of said contact part is opposite or inside the longitudinal notch of the contacting portion of the first contact part without contacting said cutout.

FIG. 1 shows the proposed magnetic control contact; in fig. 2 - contact details in the open state; in fig. 3 - the same in the closed state; in fig. 4 - traction characteristics of contacting parts of contact parts.

Claims (1)

The magnetically controlled contact includes an airtight container 1 made, for example, of glass, in the end walls of which a contact piece 2 with a longitudinal slotted 3 and a contact piece 4 with a section / section dissected into three longitudinal parts are installed. The middle part 5 is folded over and is located parallel to the remaining two parts (Figs. 1 and 2) against the slot 3 of the contact part 2 (or partially into it), without being in contact with it. Between the mutually overlapping contact areas of contact parts 2 and 4, the working gap tf is set. When a longitudinal controlling magnetic field is applied, a magnetic flux arises between the overlapping parts of the contact parts 2 and 4 (Fig. 2), causing the dependence of the tractive force F on the working gap (Y curve (Fig. 4). At the same time, magnetic flux occurs (FIG. 2, the contact between the parts of the contact part 2 and the bent section 5 of the contact part 4, since the bent section 5, when the contact details come together, passes without touches through the slot 3, the magnetic fluxes in FIGS. 2 and 3 cause the working force F clearance to The curve of Y (Fig. 4) intersecting the abscissa axis at cf-0 when the planes of the bent section 5 (Fig 2) and the contact plane of detail 2 coincide. In turn, by the redundancy of the tractive effort F at the end of the movement of the contacting areas. In the proposed device, at the beginning of the contact part movement, there is a sum of tractive effort developed by the individual contacting areas (curve & 4 and at the end of the turn - the difference. The reduction in the speed of contact of the contact parts due to a decrease in tractive effort at the end of their movement leads to a bounce-free impact. The proposed device can be made with both symmetrical and asymmetrical contact details (by their stiffness). This magnetically controlled contact can be used in high-speed transistor devices that prevent the switching on of circuits with short-term current interruptions (trigger counting circuits). The application of the proposed device (the cost of electric devices can be reduced by 15-20% due to the exclusion of special transistor circuits from them, giving the magnetically controlled contacts a bounce-free operation mode. Formula of the invention A magnetic contact containing a sealed balloon and ferromagnetic contact parts attached to opposite ends of the cylinder with a gap and mutual overlapping of the contacting areas, characterized in that, in order to reduce the ibration of the contact parts when closing, The contacting section of one of the contact parts is made with a longitudinal notch, and the contacting area of the other contact part is cut in the longitudinal Direction into three parts, with the middle part bent and placed parallel to the other two parts of the contacting section of the contact part or in the longitudinal cutout of the contacting the area of the first contact part, do not come into contact with the specified cut. g - & “L .42zh ..- JE L  X y - Z 3 S f five , iput.y HUH M . "Ff