WO2001016978A1 - Interrupteur a poussoir pour limiter le courant de demarrage - Google Patents

Interrupteur a poussoir pour limiter le courant de demarrage Download PDF

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Publication number
WO2001016978A1
WO2001016978A1 PCT/EP2000/002786 EP0002786W WO0116978A1 WO 2001016978 A1 WO2001016978 A1 WO 2001016978A1 EP 0002786 W EP0002786 W EP 0002786W WO 0116978 A1 WO0116978 A1 WO 0116978A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
contacts
driver
main
pushbutton
Prior art date
Application number
PCT/EP2000/002786
Other languages
German (de)
English (en)
Original Assignee
Dreefs Gmbh Schaltgeräte Und Systeme
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dreefs Gmbh Schaltgeräte Und Systeme filed Critical Dreefs Gmbh Schaltgeräte Und Systeme
Priority to EP00920620A priority Critical patent/EP1206785A1/fr
Priority to SK1162-2001A priority patent/SK11622001A3/sk
Publication of WO2001016978A1 publication Critical patent/WO2001016978A1/fr
Priority to HR20010668A priority patent/HRP20010668A2/hr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force

Definitions

  • the invention relates to a motor switch in the form of a pushbutton switch with two switching contacts, which can be actuated in succession, of a main switch or a bridging switch for a starting current limiting resistor.
  • Such switches are required, for example, to switch on household appliances in order to avoid the occurrence of high current peaks which could result in the house fuse blowing.
  • a generic switch with an inevitable brief activation of a starting current limiting resistor is known from DE 77 15 026 Ul.
  • the switch contact bridges of the main switch and the bypass switch are arranged parallel to each other, and the switch is designed so that when the push button is depressed, a switch contact in series with the starting resistor is closed and the motor is connected to the mains via the starting limiting resistor , If the push button is depressed further, the start-up limiting series resistor is bridged via a pair of contacts, so that the phase connection of the motor is then directly connected to the mains, whereby the resistance becomes ineffective.
  • the key slide is locked in its lower position, and after being pushed in again, the contacts are opened in reverse order under the action of a return spring of the key slide.
  • DE 28 40 176 AI relates to an electrical push-button switch with axially movable thrust members which reversibly act on several contact parts in the switch housing which are movable with a time delay.
  • the movable contact parts have two tongue parts which can be snapped into two alternative positions with respect to their dead center position, with a reversing spring located in between.
  • the various switching elements are switched during the push-in movement of the button in one direction.
  • the invention has for its object to provide a generic push button switch for starting current limitation, which ensures a safe short-circuit of the starting current limiting resistor with a simple structure that can be precisely timed.
  • the invention is accordingly based on the knowledge that the required, time-sequential contact actuation can be ensured by manual actuation of a key slide without the installation of complicated mechanical or electrical delay elements.
  • the first switching process is initiated when the button is pressed down, and the second switching process is initiated during the return stroke movement of the button.
  • the speed of the return stroke movement depends on the force of the return spring and the frictional resistance of the key slide and the displacement path.
  • the starting current limiting resistor can be designed as an NTC resistor or connected in series or in parallel with one. Due to the negative temperature coefficient then the 'resistance takes the series resistor from already before the bridge done. This means a double security with a time offset
  • FIG. 1 is a perspective view of a push-button switch for starting current limiting designed in accordance with the invention
  • Fig. 2 is a perspective view of the
  • connection and contacting elements of the push button switch according to FIG. 1; 3 to 6 show the push button switch according to FIG. 1 in different successive switching divisions, the figures marked with the letter bars A each representing a view of the switch in the direction of the arrow A according to FIG. 1 and the figures marked with the letter B. 1 shows a view of the switch in the direction of arrow B according to FIG. 1, ie the figures marked with A each show the position of the main switch and the figures marked with B show the corresponding position of the bridging switch;
  • 3A and 3B show the contacts in the OFF position
  • 4A and 4B show the contacts during the ON switching movement, the main switch being shown in its unstable position shortly before the "jump";
  • 5A and 5B show the switch contacts in the overtravel position, in which the main switch is closed and the bypass switch is open; in this position there is a series resistor connected in series with one connected to the switch's input and output terminal
  • 6A and 6B show the switch in the continuous operation
  • Bridging switch connected series resistor is bridged.
  • the switch has an access terminal 10 and an outgoing terminal 12 which can be connected in series with a motor to a voltage source.
  • a connecting terminal 16 and a connecting lug 14 serve to connect a series resistor.
  • the terminals 12 and 16 are located at the two ends of a flat metal strip 18 passing through the switch housing. An angle 20 is bent from this, which forms the first contact 22 of the bridging switch.
  • the second contact 24 of the bypass switch is arranged at the end of a U-shaped spring plate 26, which is made in one piece with the connecting lug 14.
  • the spring plate also has an integral extension 28 with a bend 30 which supports the first contact 32 of the main switch.
  • the second contact 34 of the main switch is seated at one end of a cranked arm 36, the other end 38 of which is pivotably articulated on a support 40 which is angled from the plate 42 forming the access terminal 10.
  • FIG. 3A shows the first stable position (OFF switch position) of the main switch, which jumps over the unstable middle position according to FIG. 4A into the second stable position (ON switch position) according to FIGS. 5A and 6A.
  • the switches are actuated by depressing a key 48, the key slide 50 of which carries a driver attachment 52 for the main switch and a driver pin 54 for the bridging switch.
  • a driver pin 54 Arranged symmetrically to the central axis of the key slide 50 on the other side is a driver pin 54 'which engages on the arm 36 when the key slide 50 is raised by spring force to turn off the main switch after the key 48 has been depressed and in the starting position according to FIG. 3A returns.
  • the drivers on the key slide 50 are arranged so that the bypass switch opens before the The main switch has reached its switching point (see FIGS. 4A and 4B).
  • the key slide is normally actuated beyond the switching point up to the stop (FIGS. 5A and 5B).
  • the slide After releasing the key slide, the slide returns under the action of a spring (not shown) until a locking point (ON switch position according to FIGS. 6A and 6B) is reached.
  • This latching point which can be reached via a heart curve, for example, is higher than the electrical and mechanical ON switching point, ie the bridging switch closes shortly before the latching point is reached.
  • the starting current limitation via the series resistor remains active as long as the bypass switch is open, ie until it is closed when the continuous operating position (Fig. 6B) is reached.
  • the driver pin 54 When the main switch opens, the driver pin 54 'lifts the arm 36 until the main switch jumps to the stable OFF switch position after its unstable position has been exceeded (transition from FIG. 6A to FIG. 3A).
  • the opening process of the switch takes place in the reverse order in that the key 48 is pressed and the key slide is thereby released via the heart curve and is raised under the action of its spring.
  • the driver pin 54 "engages under the offset of the arm 36 and lifts it from the position according to FIG. 6A until it springs back over its unstable middle position into the position according to FIG. 3A and thereby opens the main switch.
  • the bridging switch remains closed during this opening process of the main switch.

Landscapes

  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)

Abstract

L'invention concerne un interrupteur conçu en tant qu'interrupteur à poussoir, destiné à limiter le courant de démarrage. Cet interrupteur présente deux contacts d'un interrupteur principal et deux contacts d'un interrupteur de pontage pouvant être connectés à une résistance série. Le curseur à touches de l'interrupteur à poussoir comporte une courbe de commande, par exemple une cardioïde, maintenant la touche en position enfoncée, cette touche se relâchant sur une nouvelle pression, de manière que le curseur à touches puisse retourner en position initiale sous l'effet de la tension du ressort. Le curseur à touches présente deux entraîneurs, un premier destiné à fermer l'interrupteur principal, et un deuxième destiné à ouvrir l'interrupteur de pontage, le deuxième entraîneur servant dans le même temps à ramener les contacts de l'interrupteur principal en position d'arrêt lors du retour des touches. L'interrupteur principal est conçu en tant qu'interrupteur à fonctionnement brusque se positionnant sur une de ses positions stables (position de démarrage ou d'arrêt) après dépassement d'une position neutre instable. Le dispositif est réalisé de manière que l'interrupteur de pontage reste ouvert lors du retour de démarrage, jusqu'à ce que le moteur raccordé ait atteint un régime permettant d'inactiver la résistance série par court-circuitage. L'interrupteur principal et l'interrupteur de pontage sont montés en série entre la borne d'arrivée et la borne de départ de l'interrupteur, montées dans le circuit du moteur.
PCT/EP2000/002786 1999-08-27 2000-03-30 Interrupteur a poussoir pour limiter le courant de demarrage WO2001016978A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00920620A EP1206785A1 (fr) 1999-08-27 2000-03-30 Interrupteur a poussoir pour limiter le courant de demarrage
SK1162-2001A SK11622001A3 (sk) 1999-08-27 2000-03-30 Tlačidlový spínač na obmedzenie rozbehového prúdu
HR20010668A HRP20010668A2 (en) 1999-08-27 2001-09-10 Pushbutton switch for starting current limitation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29915053.4 1999-08-27
DE29915053U DE29915053U1 (de) 1999-08-27 1999-08-27 Drucktastenschalter für Anlaufstrombegrenzung

Publications (1)

Publication Number Publication Date
WO2001016978A1 true WO2001016978A1 (fr) 2001-03-08

Family

ID=8078107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002786 WO2001016978A1 (fr) 1999-08-27 2000-03-30 Interrupteur a poussoir pour limiter le courant de demarrage

Country Status (6)

Country Link
EP (1) EP1206785A1 (fr)
CZ (1) CZ20012834A3 (fr)
DE (1) DE29915053U1 (fr)
HR (1) HRP20010668A2 (fr)
SK (1) SK11622001A3 (fr)
WO (1) WO2001016978A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360128A (en) * 1943-03-12 1944-10-10 Gen Electric Snap-action device
DE7242958U (de) * 1972-01-03 1973-02-22 Tschudin & Heid Ag Schaltvorrichtung
EP0213712A2 (fr) * 1985-07-29 1987-03-11 Burgess Micro Switch Company Ltd Interrupteurs électriques à action brusque
US5360954A (en) * 1993-01-19 1994-11-01 Preh-Werke Gmbh & Co. Kg Push button switch
EP0727795A2 (fr) * 1995-02-17 1996-08-21 Honeywell Inc. Commutateur à plusieurs étages avec mécanisme d'ouverture positive
DE29801195U1 (de) * 1998-01-26 1998-03-19 Heinrich Kopp Ag, 63796 Kahl Elektromotorschalter
DE29802820U1 (de) * 1998-02-18 1998-04-16 Kopp Heinrich Ag Vorrichtung für das Ein- und Ausschalten eines Elektromotors, insbesondere eines Elektrowerkzeugs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840176A1 (de) 1978-09-15 1980-03-27 Baer Elektrowerke Kg Elektrischer schalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360128A (en) * 1943-03-12 1944-10-10 Gen Electric Snap-action device
DE7242958U (de) * 1972-01-03 1973-02-22 Tschudin & Heid Ag Schaltvorrichtung
EP0213712A2 (fr) * 1985-07-29 1987-03-11 Burgess Micro Switch Company Ltd Interrupteurs électriques à action brusque
US5360954A (en) * 1993-01-19 1994-11-01 Preh-Werke Gmbh & Co. Kg Push button switch
EP0727795A2 (fr) * 1995-02-17 1996-08-21 Honeywell Inc. Commutateur à plusieurs étages avec mécanisme d'ouverture positive
DE29801195U1 (de) * 1998-01-26 1998-03-19 Heinrich Kopp Ag, 63796 Kahl Elektromotorschalter
DE29802820U1 (de) * 1998-02-18 1998-04-16 Kopp Heinrich Ag Vorrichtung für das Ein- und Ausschalten eines Elektromotors, insbesondere eines Elektrowerkzeugs

Also Published As

Publication number Publication date
DE29915053U1 (de) 1999-12-16
EP1206785A1 (fr) 2002-05-22
CZ20012834A3 (cs) 2002-07-17
HRP20010668A2 (en) 2002-10-31
SK11622001A3 (sk) 2002-07-02

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