EP0050063B1 - Dispositif de déclenchement par aimant - Google Patents

Dispositif de déclenchement par aimant Download PDF

Info

Publication number
EP0050063B1
EP0050063B1 EP81401479A EP81401479A EP0050063B1 EP 0050063 B1 EP0050063 B1 EP 0050063B1 EP 81401479 A EP81401479 A EP 81401479A EP 81401479 A EP81401479 A EP 81401479A EP 0050063 B1 EP0050063 B1 EP 0050063B1
Authority
EP
European Patent Office
Prior art keywords
magnet
location
housing
lever
substantially perpendicular
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP81401479A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0050063A1 (fr
Inventor
Christian Mabillot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POMPES GUINARD DITE Ste
Original Assignee
Pompes Guinard SA
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 Pompes Guinard SA filed Critical Pompes Guinard SA
Publication of EP0050063A1 publication Critical patent/EP0050063A1/fr
Application granted granted Critical
Publication of EP0050063B1 publication Critical patent/EP0050063B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet

Definitions

  • the present invention relates to trigger devices of the type according to the preamble of the main claim. Illustrated on the example of the triggering of a cellar pump, it nevertheless applies to any machine or installation requiring a trigger.
  • the invention solves at the same time the problems of sealing, timing and adjustment by the provisions of the characteristic part of the main claim.
  • the device shown comprises a first permanent magnet 1, housed in a housing 2 made of non-magnetic plastic.
  • This magnet 1 is carried by one end of a lever 3 held in the position of FIGS. 1 and 4 by a spring 4. In this position, the other end of the lever 3 does not close an electrical circuit 5 with a microswitch .
  • a plastic housing 6 is attached to the housing 2 and does not communicate with the latter.
  • the housing 2 and the housing 6 have a common wall 7 substantially perpendicular to the path followed by the magnet 1, when it is attracted against the force of the spring 4, with tilting of the lever 3.
  • a second permanent magnet 9 In the housing 6 is mounted for rotation about an axis 8 a second permanent magnet 9.
  • the axis 8 crosses without sealing the wall 10 of the housing opposite the wall 7.
  • the axis 8 is bent and carries at the end a float 11.
  • the magnet 9 can thus describe, according to a back-and-forth movement comes, a semicircle, whose plane is substantially perpendicular to the trajectory of attraction of the magnet 1.
  • the magnet 9 is oriented so that its polarity, when it comes in front of the place 12 (figure 2) where it is opposite the magnet 1, is opposite to that of the latter.
  • a plate 13 made of magnetic stainless steel is fixed in rotation with the magnet 9. Thinner than the latter, it applies, when it is in front of the place 12, to the magnet 1 a much less magnetic force than that that the magnet 9 applies to the magnet 1 when it is in front of the location 12. This force applied by the plate 13 is insufficient to attract the magnet 1 but is sufficient to hold it in said location 12 if there is been attracted beforehand.
  • the assembly is such that, when the second magnet 9 and the plate 13 return from place 12, the plate 13 remains in front of place 12 after the magnet 9 has already left it.
  • the device operates as follows.
  • the float 11 is at the lowest level ( Figure 1).
  • the magnet 1 and the magnet 9 are offset by a large angle.
  • the magnet 9 does not attract the magnet 1. It is the force of the spring 4 which determines the position of the magnet 1 and of the lever 3.
  • the electric circuit 5 for triggering a pump P is open.
  • the water level rises.
  • the float 11 rises and rotates the axis 8.
  • the plate 13 passes in front of the location 12.
  • the magnet 1 is not attracted.
  • the magnet 9 turns until it comes to the place 12 (figure 2). It attracts the magnet 1.
  • the electric circuit 5 closes and controls the starting of the pump P by means of an electric conductor C.
  • the crossing of the housing 2 does not raise any sealing difficulty.
  • the pump always works thanks to this maintenance.
  • the plate 13 continues to move until the magnetic holding attraction becomes less than the force of the spring 4. There is then a sudden cut.
  • This very simple device also has the advantage of allowing rudimentary positioning of the microswitch relative to the position of the control pin 8.
  • a relatively large variation in the microswitch position results in a very small deviation of the high and low levels.
  • the invention can also be applied to a switch with two fixed positions.
  • the retaining plate is replaced by a third magnet, offset from the second by an angle which will depend on the desired gap between trigger and stop level.
  • the holding plate 13 may also not be in contact with the magnet 9 or even be located inside the housing 2.
  • the microswitch can be single or double or multi-pole.
  • the magnets can be controlled by something other than a float.

Landscapes

  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Cookers (AREA)
  • Electromagnets (AREA)
EP81401479A 1980-10-10 1981-09-23 Dispositif de déclenchement par aimant Expired EP0050063B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8021656 1980-10-10
FR8021656A FR2492154A1 (fr) 1980-10-10 1980-10-10 Dispositif de declenchement par aimant

Publications (2)

Publication Number Publication Date
EP0050063A1 EP0050063A1 (fr) 1982-04-21
EP0050063B1 true EP0050063B1 (fr) 1984-07-25

Family

ID=9246732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401479A Expired EP0050063B1 (fr) 1980-10-10 1981-09-23 Dispositif de déclenchement par aimant

Country Status (5)

Country Link
EP (1) EP0050063B1 (enrdf_load_stackoverflow)
DE (1) DE3165085D1 (enrdf_load_stackoverflow)
DK (1) DK150554C (enrdf_load_stackoverflow)
FR (1) FR2492154A1 (enrdf_load_stackoverflow)
IT (1) IT1145945B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19644203A1 (de) * 1996-10-24 1998-04-30 Klein Schanzlin & Becker Ag Vorrichtung für die Niveaumessung in einem Behälter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8812036U1 (de) * 1988-09-23 1989-01-26 Henkel, Wolfgang Eberhard, 6832 Hockenheim Bistabiler Schaltkontakt zur äußeren Montage an Füllstandsrohren
FR2751381B1 (fr) * 1996-07-22 1998-10-02 Ksb Sa Commande de mise en marche d'une pompe submersible
DE19745184A1 (de) * 1997-10-13 1999-04-15 Klein Schanzlin & Becker Ag Schwimmerschalter
GB2537397A (en) * 2015-04-16 2016-10-19 Well Electronics Co Ltd Breaker device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378129A (en) * 1941-08-07 1945-06-12 Trist & Co Ltd Ronald Magnetic device
US2414688A (en) * 1942-08-22 1947-01-21 Trist & Co Ltd Ronald Magnetic device
US2690484A (en) * 1952-07-28 1954-09-28 Christian J Van Eyk Float switch
US3270165A (en) * 1963-02-21 1966-08-30 George A Gariepy Magnetically operated mercury switch with improved slidable and rotatable magnetic actuators
FR1440658A (fr) * 1965-01-13 1966-06-03 Desgranges & Huot Perfectionnements aux contacteurs électriques à niveau
DE2623395A1 (de) * 1976-05-25 1977-12-08 Okar Luehn Schwimmerschalter fuer niveaureglung u.dgl.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19644203A1 (de) * 1996-10-24 1998-04-30 Klein Schanzlin & Becker Ag Vorrichtung für die Niveaumessung in einem Behälter

Also Published As

Publication number Publication date
IT1145945B (it) 1986-11-12
FR2492154A1 (fr) 1982-04-16
DK442381A (da) 1982-04-11
DK150554C (da) 1988-02-22
FR2492154B1 (enrdf_load_stackoverflow) 1983-06-10
EP0050063A1 (fr) 1982-04-21
IT8112637A0 (it) 1981-09-29
DK150554B (da) 1987-03-23
DE3165085D1 (en) 1984-08-30

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