DE1638108B2 - CONTACTLESS LIMIT SWITCH - Google Patents

Description

pole of the magnets 10 wd U face, will

! lie ÄÄraft obtained from the field lines, SQ that she]) spare a pen,

In this case the eiektnsclte hyn ^ - tion by reversing the polarity of one of the peidep MftgHfte 14 bedep. In this case fiebep sicjv be! At

^ ZO ⁶ L connection with an electronic Yer-

ZZ can be increased in connection with n equalization,

1 sheet of drawings

Claims (2)

1 2 teristjsche change of the resistance in the benefit claims; ^ E ^ is also known from the German Ausjegescjmft 1 211 315, the inductance of an avU an 1. Contactless limit switch to the weeabh / ängi- 5 Transfarmatorjoch located coil by Ab.gen triggering Sehaltyorgänge, whereby to raise or put on a transformer yoke to generate electronic control impulses of the resistors and this change in inductance to the status of one or more current-carrying controls to exploit electrical circuits.
Field plates, can be changed by a magnetic field, in which the field plate can be created in the area of a limit switch which has the properties of a magnetic field, the density of which and / or the known contactless switch possesses and represents - or the position to the field plate by a per- reproducibility of the switching point that can be moved from the outside by means of a switching accuracy or actuating plunger that can be moved from outside gig of the speed of the switch plunger magnet Polschul.e with a narrow air gap movement. carries, on which the field plate is located, for this purpose is characterized in a contactless by that the moving limit switch of the type mentioned above, the movable magnet (10) in one direction, which vertical borrowed magnet in a direction, which perpendicular to the end of the pole pieces (13) facing the movable magnet (10) facing the movable magnet (12) is directed, displaced, slidably mounted and carries is mounted at its bar and at its ends pole pieces ends pole pieces. which in displacement direction: ^ (11) carries which in displacement direction to protrude to the pole pieces of the stationary magnet the pole pieces (13) of the stationary magnet (12) 25 and are dimensioned so that one protrudes vertically / u and are dimensioned so that in the case of a displacement of the end faces of the pole thrust of the stationary magnet perpendicular to the end faces of the pole shoes (13), the end faces of the Po! - of the stationary magnet take place - on the opposite end faces of the pole shoes, movable magnets (10) touch the corresponding 30 of the stationary magnets,
Touch the opposite end faces of the pole shoes (13) with a contactless Em! - of the stationary magnet (12) designed in this way. switch is switched on without any significant effort 2. Contactless limit switch according to claim 1, multiply means the aforementioned object in characterized in that the pole shoes (11) are released in an operationally reliable manner. of the movable magnet (10) on the pole 35 It is useful if the pole shoes of the (13) of the stationary magnet (12) in addition to the magnet on the pole pieces of the ογν-turned Side have a widening. fixed magnets facing a widening exhibit. As a result, when the buttocks of the movable magnet approach the pole shoes, they are of the stationary magnet are particularly favorable conditions in the magnetic path of the lines of force of the flux of the stripping force of the movable magnet created, and the transition of the stray lines of force of the movable The invention relates to contactless end magnets in the two pole pieces of the movable switch for the path-dependent triggering of switching magnets is favored and thereby when approaching processes, whereby the control pulses of the resistance flood one or more of the field plate to generate electronic tion of the portable magnet changed particularly strongly,
field plates through which a current flows through a magnet - in the following the invention is in connection IeId can be changed in which the field plate 50 training with the one exemplary embodiment is arranged in the area of a magnetic field. its figure described. The figure shows schematically one Density and / or position to the field plate through a contactless limit switch in longitudinal section. It is The plastic switch housing with 1. the R-Fermanentmagncten can be moved from the outside by means of an actuating plunger Within selectable limits, change the pushbutton with 2. the field plate with 3 uii ler is bar and in which a stationary permanent space for accommodating the amplifier 1 is ekmagnet Polschuhc carries with a narrow air gap, tronik denoted by 4. on which the field plate is located. The displaceably guided in the housing 1 ßekanrttlich have such contactless Schaller activity pushers 2 carries the magnet 10 with the pole opposite shoes 11 with mechanical contacts particularly advantageous properties, in particular 60 pre-tensioning magnet 12 permanently installed, its pole shoes Bounce-free contact, long service life, constant- are designed as catch plates 13, between which permanent contact resistance, Unefripfiridlidikeit the field plate 3 is used. against moisture and vibration, high switching frequency 'When the actuating plunger 2 is pressed in, the speed and low actuation force. Magnet 10 in the direction of the Vorf / annmagneten 12 It is from the magazine »measure + check, 65 moves. Whose Faiigbleche 13 collect from the Volume 6, known that with a passing Polschulier ii outgoing magnetic field lines and Moving a magnet on one of the stationary guides it through the field plate 3, making their Magnets pre-magnetized field plate a diarak resistance is increased. Since the eponymous