DE590283C - Switching relay to bring about a delayed switching process - Google Patents

Description

GERMAN RElCFx

ISSUE ALH JANUARY 4, 1934

. - GERMAN PATENT OFFICE

PATENT LETTERING

"CLASS 21g GROUP 4 oi

Patented in the German Empire on June 26, 193.1

The invention relates to a switching relay for bringing about a "delayed" switching process. The relay speaks at a certain time after the power is switched on

\ 5 by the fact that according to the invention several individual cores are arranged in such a way that a main core moved by the tensile force of a solenoid is gradually lengthened by pulling in further cores and the switching process is effected by shifting the axis of symmetry of the lengthened core to the solenoid Movement takes place.

The application is particularly advantageous

such a hold relay for power magnets

i; 5 with a very short stroke time, its winding as a result of of the stroke to be covered in an exceptionally short time with high tensile force are currently specifically very heavily loaded got to. The winding can only cope with such a high load for a short time, which is why Immediately after the end of the stroke, a relief, for example by switching on a Resistance is made in the circle of the winding. That worries such a thing Switching relay automatically with a certain delay.

The drawing illustrates two embodiments of the switching relay in schematic form Depiction. Figs. 1 to 3 show one embodiment with two magnetic cores in three different switching positions of their switching elements that follow one another during the switching process .. Fig. 4 to 7 give a second embodiment with several magnetic cores in the different positions .: . . ..:

In the embodiment of Fig. 1, a current-carrying solenoid 1 moves to the dotted lines indicated known tensile curve .sf ₁ and Z ₂ at symmetrically arranged winding protruding into the coil cylindrical iron core 2 so far, until apart from the outer to the core wirken- 'The forces, the center of the core coincides with the center of the coil, or in other words, until the "axes of symmetry of the core and the sink coincide (Fig. 2). The core has thus moved from right to left. However, it oscillates as a result of its living force beyond the equilibrium position by a certain amount p to the left, as indicated by dash-dotted lines in Fig. 2, it approaches the switching core 3 and attracts it to itself 3 to the left beyond the center of the bobbin by half the core length of 3. A pulling force directed to the right is now applied to the extended core aft exercised, which allows him to adjust to the new equilibrium position shown in Fig. 3. This causes the desired switching process, e.g. B.

*) The patent seeker stated as the inventor:

Hermann Sundhaußen in Düsseldarf.-Rath.

before switching the resistor 4. into the circuit of a force magnet 5.

When switch b is closed , the relay (solenoid 1) and the object to be switched (force magnet 5) are energized simultaneously. The intended switching process, the upstream connection of the resistor 4, however, takes place with a time delay in accordance with the movements of the two cores 2 and 3. The size of the delay can be regulated within certain limits by the initial positions of the two cores 2 and 3 in relation to the tensile force curve S ₁ which can regulate the acceleration force for the core 2 and thus the amount £ of the dispensing.

After opening switch b , the cores are returned to their original position by spring loading.

In the embodiment of the switching relay according to FIGS. 4 to 7, the arrangement is basically the same, only the main core 2 is designed, so to speak, as a magazine, for three (or more) partial cores 3 _a , 3 _& 3 _C. The partial cores are separated from one another by non-magnetic intermediate layers 6 and 7. A lifting rod 8 carrying the partial cores in a loose row one behind the other is likewise tmmagnetic.

After the current is closed, the core 2 first moves into its equilibrium position (Fig. 5) and lifts the magazine 3 _a -3 _c so far that the partial core 3 _{ß has reached} the area of tensile force, ie the stray field Jk _{1 of} the solenoid coil . This is thereby attracted and extends the main core 2, which, as in the embodiment described first, now assumes a new position of equilibrium (Fig. 6). This in turn raises the core 3 ₆ in the stray field of the coil, it is attracted, and sets its part, the above-described game progresses, until finally, after attraction of the last part of the core Endgleichgewichtsläge (Fig. 7) is reached and thus the desired

Switching process has been triggered, so the resistance 4 of the winding of the Kraftniagneten 5 is connected upstream. The switching delay can be determined by the number of Regulate partial cores.

After opening switch b , the cores are returned to their original position by their own weight, as assumed in the drawing, or by a corresponding spring load.

Claims (3)

PATENT CLAIMS: 1. Switching relay for bringing about a delayed switching process ₃ characterized by several individual cores arranged in such a way that a main core (2) moved by the tensile force of a solenoid (1) is gradually lengthened by pulling in further cores (3) and the switching process according to the so by laying the axis of symmetry of the elongated core to the solenoid caused movement. 2. Switching relay according to claim 1, characterized by a main core (2) and a second after covering its in one direction Eigenhubs of his attracted core (3), by which the main core is extended in this way is that by occurring as a result of the relocation of the axis of symmetry Moving both cores back in the other direction from the extension core piece (3) the switching operation is effected. 3. Switching relay according to claim 1, characterized by a main core (2) and from this with its own stroke with raised, spatially separated part cores (3 _a , 36,3c) »which, when the stray field is reached, successively on the main core, him lengthening, apply, whereby the last partial core triggers the switching process. 1 sheet of drawings