EP0391021A2 - Appareil de commutation électrique - Google Patents

Appareil de commutation électrique Download PDF

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Publication number
EP0391021A2
EP0391021A2 EP90100886A EP90100886A EP0391021A2 EP 0391021 A2 EP0391021 A2 EP 0391021A2 EP 90100886 A EP90100886 A EP 90100886A EP 90100886 A EP90100886 A EP 90100886A EP 0391021 A2 EP0391021 A2 EP 0391021A2
Authority
EP
European Patent Office
Prior art keywords
switching
switching device
plunger
supported
cutting edges
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.)
Withdrawn
Application number
EP90100886A
Other languages
German (de)
English (en)
Other versions
EP0391021A3 (fr
Inventor
Hubert Strzodka
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.)
Imo Industries GmbH
Original Assignee
Imo Industries GmbH
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 Imo Industries GmbH filed Critical Imo Industries GmbH
Publication of EP0391021A2 publication Critical patent/EP0391021A2/fr
Publication of EP0391021A3 publication Critical patent/EP0391021A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2657—Details with different switches operated at substantially different pressures

Definitions

  • the invention relates to an electrical switching device with an axially displaceable switching plunger, against which a rocker arm which is pivotable about a housing-fixed cutting edge and is designed to actuate a microswitch is supported.
  • a switching device is the subject of US Pat. No. 2,268,340.
  • the known switching device has a relatively large volume. It has only a single rocker arm and only one microswitch operated by this. For many applications, however, it is necessary that two microswitches are actuated by a switching plunger at different pressures. The shift plunger must then be supported on a total of two rocker arms. If you would add a second rocker arm and microswitch to the known switching device, it would take up undesirably a lot of space for many applications.
  • the invention has for its object to provide a switching device of the type mentioned in such a way that it is as compact as possible and that two microswitches can be actuated with it at different pressures.
  • rocker arms are arranged symmetrically to the switching plunger opposite one another on a housing having two cutting edges, which are supported with their lever arm facing the switching plunger on the switching plunger and rest with their other lever arm against a microswitch.
  • This design creates a particularly compact switching device with two microswitches that can be actuated at different pressures.
  • the compact design also means that the microswitch is very robust and works independently of vibrations. For example, it is particularly suitable for use in motor vehicles in connection with anti-lock braking systems.
  • the switching device is designed to be particularly simple in terms of construction if the upper housing part consists of a base plate having the cutting edges and a support bridge aligned parallel to the cutting edges, on the side surfaces of which the two microswitches are arranged.
  • the switching point for microswitches is higher when the pressure builds up than when the pressure is reduced, since the switching pin must first cover a differential path after reaching the switching point when the pressure builds up and then decreases before the so-called switch-back point is reached.
  • the mutual distance between the two switching points of the microswitches can be changed in a simple manner by changing the transmission ratio if, according to an advantageous embodiment of the invention, the microswitches each have a shift lever running in the direction of the respective cutting edge, with which they rest against the rocker arm, and if the microswitches are each slidably supported on the support bridge in the longitudinal direction of the cutting edges.
  • the displaceability of the microswitches can be achieved particularly easily if a slide piece is arranged in each of two bores of the support bridge running parallel to the cutting edges, which each hold a microswitch.
  • the range of the switching points can be moved up or down as a whole if the rocker arms are each supported on the switching plunger with an adjustable adjusting screw.
  • the switching device is particularly compact and robust if the rocker arms are designed as semicircular disks as seen in plan view, the straight edge of which partially covers the switching plunger, and if a guide screw leads to the base plate through an opening in the rocker arm on both sides of the switching plunger, against the head of which a spring is supported, which rests with its other end on the rocker arm.
  • the electrical switching device shown as a whole in FIG. 1 has an axially displaceable piston 2 in a housing 1, the lower end face of which is to be pressurized via a housing bore 3.
  • the piston 2 is sealed off from the housing 1 by a seal 4.
  • This switching plunger 6 is capable of two rocker arms 7, 8 pivot, which are each pivotally held on a cutting edge 9, 10.
  • the rocker arms 7, 8 are each capable of actuating a microswitch 11, 12.
  • the switching plunger 6 engages with a switching extension 13 in a stepped bore 14 in a stop plate 15, which is firmly connected to the housing 1.
  • the bore 14 in the stop plate 15 is widened downward in diameter so that the piston 2 can move so far into it by shifting the switching extension 13 and thus the switching plunger 6 that it bears against a collar 16 of the bore 14 and thus hit against a stop.
  • the two rocker arms 7, 8 are each supported with an adjusting screw 17, 18 screwed into them on the upper end face of the switching plunger 6. They are held against the switching plunger 6 by springs 19, 20 provided on their top, which are each support on the one hand against the head of an adjusting screw 21, 22, and on the other hand against the respective rocker arm 7, 8.
  • the guide screws 21, 22 in turn lead through the rocker arms 7, 8 into an upper housing part 23 which has the cutting edges 9, 10 and is connected to the housing 1 by caulking 24.
  • FIG. 2 shows the design of the switching device in the region of the rocker arms 7, 8 more clearly. It can be seen that these rocker arms are semi-disc-shaped and partially reach over the end face of the switching plunger 6.
  • Each rocker arm 7, 8 has two lateral openings 25, 26 in the form of a slot open towards the straight side of the rocker arm 7, 8, through which a guide screw 21, 21b is guided.
  • the adjusting screws 17 and 18 are located between these guide screws 21, 21b and 22, 22b, respectively.
  • the cutting edges 8, 9 are partially visible in FIG. 2.
  • FIG. 3 shows that the upper housing part 23 consists of a base plate 27 and a support bridge 28.
  • FIG. 1 shows, two bores 29, 30 running parallel to the main direction of extension of the cutting edges 9, 10 are provided in the horizontal cross piece of the support bridge 28, in each of which a displaceable sliding piece 31, 32 is arranged, which each holds one of the microswitches 11, 12 .
  • Figure 3 it can be seen from the example of the microswitch 11 that this has a switching lever 34 mounted on it for actuating its switching pin 33.
  • the rocker arm 7, not shown in FIG. 3, is supported against this shift lever 34. Moving the microswitch 11 transversely to the rocker arm by moving the slider 31 in the bore 29 in FIG.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Control Of Transmission Device (AREA)
EP19900100886 1989-04-04 1990-01-17 Appareil de commutation électrique Withdrawn EP0391021A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3910837A DE3910837A1 (de) 1989-04-04 1989-04-04 Elektrische schalteinrichtung
DE3910837 1989-04-04

Publications (2)

Publication Number Publication Date
EP0391021A2 true EP0391021A2 (fr) 1990-10-10
EP0391021A3 EP0391021A3 (fr) 1991-04-10

Family

ID=6377808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900100886 Withdrawn EP0391021A3 (fr) 1989-04-04 1990-01-17 Appareil de commutation électrique

Country Status (4)

Country Link
US (1) US5089673A (fr)
EP (1) EP0391021A3 (fr)
JP (1) JPH0362424A (fr)
DE (1) DE3910837A1 (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9209877U1 (de) * 1992-07-22 1993-11-25 Stöger, Helmut, 82362 Weilheim Druckschalter
BR0016875A (pt) 1999-12-29 2003-06-17 Hill Rom Services Inc Suporte de paciente, colchão configurado para suportar um paciente, método para suportar um paciente, método de manter alìvio de pressão no calcanhar de um paciente, sistema de pressão para uso com um colchão de suporte de paciente, e, armação para um suporte de paciente
KR100505150B1 (ko) * 2000-04-17 2005-08-03 한국델파이주식회사 분리형 로드를 갖는 압력 스위치
DE10331130A1 (de) 2003-07-09 2005-02-03 Demag Cranes & Components Gmbh Schalter für die Handbetätigung von Hebezeugen
ITRE20030092A1 (it) * 2003-09-30 2005-04-01 Arrow Line Srl Pressostato a corsa smorzata.
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7699770B2 (en) 2005-02-24 2010-04-20 Ethicon Endo-Surgery, Inc. Device for non-invasive measurement of fluid pressure in an adjustable restriction device
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268340A (en) * 1940-10-18 1941-12-30 Evarts G Loomis Fluid pressure control device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR882291A (fr) * 1941-05-31 1943-05-28 Stotz Kontakt Gmbh Interrupteur de feu d'arrêt d'automobile
US2895024A (en) * 1957-09-12 1959-07-14 Ben E Brown Pressure switch
GB1404309A (en) * 1971-09-09 1975-08-28 Otehall Ltd Electrical switches
DE2905792C2 (de) * 1979-02-15 1981-02-19 Fa. Leopold Kostal, 5880 Luedenscheid Durch mechanischen, pneumatischen oder hydraulischen Druck zu betätigender elektrischer Schalter
US4493957A (en) * 1983-03-11 1985-01-15 Red Dot Corporation Multimodal pressure switch
DE3605388C2 (de) * 1985-12-03 1995-08-03 Teves Gmbh Alfred Elektrohydraulische Schaltvorrichtung
DE3627695A1 (de) * 1986-08-14 1988-02-25 Teves Gmbh Alfred Elektrohydraulische schaltvorrichtung
DE3704718A1 (de) * 1987-02-14 1988-08-25 Thomson Brandt Gmbh Geraet zur wiedergabe von daten
DE8704718U1 (de) * 1987-03-31 1987-07-02 Delaval Turbine GmbH, 6361 Reichelsheim Druckschalter
DE3710645A1 (de) * 1987-03-31 1988-10-20 Delaval Turbine Gmbh Druckschalter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268340A (en) * 1940-10-18 1941-12-30 Evarts G Loomis Fluid pressure control device

Also Published As

Publication number Publication date
EP0391021A3 (fr) 1991-04-10
DE3910837A1 (de) 1990-10-11
US5089673A (en) 1992-02-18
JPH0362424A (ja) 1991-03-18

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