EP1775743A3 - Hydraulic pressure switch - Google Patents

Hydraulic pressure switch Download PDF

Info

Publication number
EP1775743A3
EP1775743A3 EP06020064A EP06020064A EP1775743A3 EP 1775743 A3 EP1775743 A3 EP 1775743A3 EP 06020064 A EP06020064 A EP 06020064A EP 06020064 A EP06020064 A EP 06020064A EP 1775743 A3 EP1775743 A3 EP 1775743A3
Authority
EP
European Patent Office
Prior art keywords
actuating piston
spring plate
pressure
actuating
piston
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.)
Granted
Application number
EP06020064A
Other languages
German (de)
French (fr)
Other versions
EP1775743B1 (en
EP1775743A2 (en
Inventor
Götz-Dieter MACHAT
Martin Ruppert
Minka Tschekorsky Orloff
Hubert Feser
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.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
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 Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1775743A2 publication Critical patent/EP1775743A2/en
Publication of EP1775743A3 publication Critical patent/EP1775743A3/en
Application granted granted Critical
Publication of EP1775743B1 publication Critical patent/EP1775743B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

Die Erfindung betrifft einen hydraulischer Druckschalter zur Steuerung hydraulischer Anlagen, der einen in eine Druckkammer hineinragenden und durch den dort herrschenden Druck axial verschiebbaren Betätigungskolben aufweist, dessen der Druckkammer gegenüberliegendes Ende mit einem Federteller in Wirkverbindung steht, Der Federteller ist von einer Druckfeder zur Erzeugung eines Gegendrucks beaufschlagt ist und dient der Betätigung eines elektrischen Schalters.
Damit der Betätigungskolben leichtgängig und damit die Schalthysterese gering ist, verläuft der Kraftfluss zwischen dem Betätigungskolben und dem Federteller über eine dazwischen angeordnete Lagerkugel. Damit wird der Einfluss einer nicht genau in der Achse des Betätigungskolbens liegende Federkraft auf den Betätigungskolben verringert.

Figure imgaf001
The invention relates to a hydraulic pressure switch for controlling hydraulic systems, which has a projecting into a pressure chamber and axially displaceable there by the actuating pressure piston whose pressure chamber opposite end is in operative connection with a spring plate, the spring plate is of a compression spring to generate a back pressure is acted upon and serves to actuate an electrical switch.
Thus, the actuating piston smoothly and thus the switching hysteresis is low, the power flow between the actuating piston and the spring plate extends over a bearing ball arranged therebetween. Thus, the influence of a not exactly lying in the axis of the actuating piston spring force is reduced to the actuating piston.
Figure imgaf001
EP20060020064 2005-10-14 2006-09-26 Hydraulic pressure switch Not-in-force EP1775743B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510049171 DE102005049171A1 (en) 2005-10-14 2005-10-14 Hydraulic pressure switch

Publications (3)

Publication Number Publication Date
EP1775743A2 EP1775743A2 (en) 2007-04-18
EP1775743A3 true EP1775743A3 (en) 2008-11-05
EP1775743B1 EP1775743B1 (en) 2013-04-03

Family

ID=37401181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060020064 Not-in-force EP1775743B1 (en) 2005-10-14 2006-09-26 Hydraulic pressure switch

Country Status (3)

Country Link
EP (1) EP1775743B1 (en)
DE (1) DE102005049171A1 (en)
DK (1) DK1775743T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8022321B2 (en) 2009-02-10 2011-09-20 Honeywell International Inc. Hydraulic pressure switch with porous disc as snubbing element
US9966211B1 (en) 2015-05-21 2018-05-08 Hydra-Electric Company Pressure switch system
CN113175560A (en) * 2021-06-15 2021-07-27 浙江金隆铜业股份有限公司 Valve body with pre-filter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876561C (en) * 1951-10-19 1953-05-15 Hermann Kurt Weihe Hydraulically operated stop light switch
DE3245937A1 (en) * 1982-12-11 1984-06-14 Hydrostar Dipl.-Ing. Rolf Oehler KG, 5840 Schwerte Hydraulic pressure switch
US4743716A (en) * 1986-09-30 1988-05-10 Kogyo Keiki Kabushiki Kaisha Pressure sensor
DE19818841A1 (en) * 1998-04-28 1999-11-11 Bosch Gmbh Robert Pressure switch
DE19818838A1 (en) * 1998-04-28 1999-11-11 Bosch Gmbh Robert Pressure switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876561C (en) * 1951-10-19 1953-05-15 Hermann Kurt Weihe Hydraulically operated stop light switch
DE3245937A1 (en) * 1982-12-11 1984-06-14 Hydrostar Dipl.-Ing. Rolf Oehler KG, 5840 Schwerte Hydraulic pressure switch
US4743716A (en) * 1986-09-30 1988-05-10 Kogyo Keiki Kabushiki Kaisha Pressure sensor
DE19818841A1 (en) * 1998-04-28 1999-11-11 Bosch Gmbh Robert Pressure switch
DE19818838A1 (en) * 1998-04-28 1999-11-11 Bosch Gmbh Robert Pressure switch

Also Published As

Publication number Publication date
DE102005049171A1 (en) 2007-04-19
EP1775743B1 (en) 2013-04-03
EP1775743A2 (en) 2007-04-18
DK1775743T3 (en) 2013-07-08

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