EP0286777A3 - Piston-cylinder unit - Google Patents

Piston-cylinder unit Download PDF

Info

Publication number
EP0286777A3
EP0286777A3 EP88100290A EP88100290A EP0286777A3 EP 0286777 A3 EP0286777 A3 EP 0286777A3 EP 88100290 A EP88100290 A EP 88100290A EP 88100290 A EP88100290 A EP 88100290A EP 0286777 A3 EP0286777 A3 EP 0286777A3
Authority
EP
European Patent Office
Prior art keywords
piston
damping
flow path
cylinder unit
gap
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Withdrawn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
EP88100290A
Other languages
German (de)
French (fr)
Other versions
EP0286777A2 (en
Inventor
Günter Peter
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.)
Gesellschaft fur Hydraulik-Zubehor Mbh
Original Assignee
Gesellschaft fur Hydraulik-Zubehor Mbh
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 Gesellschaft fur Hydraulik-Zubehor Mbh filed Critical Gesellschaft fur Hydraulik-Zubehor Mbh
Publication of EP0286777A2 publication Critical patent/EP0286777A2/en
Publication of EP0286777A3 publication Critical patent/EP0286777A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • F15B2201/4155—Gas ports having valve means

Abstract

Bei einer Kolben-Zylinder-Einheit mit einer Kolbenendlagen­ dämpfung, die einen an der Stirnfläche des Kolbens (15) vor­ springenden Dämpfungskolben (31) aufweist, der unter Bildung eines Dämpfungsspaltes (38) in einen am zugekehrten Zylinder­ ende vorgesehenen Dämpfungsraum (32) einfahrbar ist, ist für die Einleitung einer Rückhubbewegung des Kolbens (15) ein Strömungsweg vorgesehen, der vom Anschluß (25) für Drucköl unter Umgehung des Dämpfungsspalts (38) zum an die Hauptkol­ benfläche (29) des Kolbens (15) angrenzenden Druckraum (40) führt und ein Rückschlagventil (47) enthält. Dieser Strömungs­ weg erstreckt sich innerhalb des Kolbens (15) zwischen einer Eintrittsöffnung am vorderen Ende (45) des als hohle Hülse ausgebildeten Dämpfungskolbens (31) und einen vom Innenraum (43) dieser Hülse nach außen führenden Durchbruch (55). For a piston-cylinder unit with a piston end position damping, the one on the end face of the piston (15) jumping damping piston (31), the formation a damping gap (38) in an on the facing cylinder provided for the end of the damping space (32) the initiation of a return stroke movement of the piston (15) Flow path provided by the connection (25) for pressure oil bypassing the damping gap (38) to the main piston ben surface (29) of the piston (15) adjacent pressure chamber (40) leads and contains a check valve (47). This flow path extends within the piston (15) between one Entry opening at the front end (45) of the hollow sleeve trained damping piston (31) and one from the interior (43) this sleeve leading outward opening (55).

EP88100290A 1987-04-14 1988-01-12 Piston-cylinder unit Withdrawn EP0286777A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873712671 DE3712671A1 (en) 1987-04-14 1987-04-14 PISTON-CYLINDER UNIT
DE3712671 1987-04-14

Publications (2)

Publication Number Publication Date
EP0286777A2 EP0286777A2 (en) 1988-10-19
EP0286777A3 true EP0286777A3 (en) 1989-12-06

Family

ID=6325614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100290A Withdrawn EP0286777A3 (en) 1987-04-14 1988-01-12 Piston-cylinder unit

Country Status (3)

Country Link
EP (1) EP0286777A3 (en)
JP (1) JPS63308202A (en)
DE (1) DE3712671A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29721200U1 (en) * 1997-11-29 1998-01-22 Buemach Engineering Internatio Sealing thread pairing
IT1313145B1 (en) * 1999-08-04 2002-06-17 Univer Spa LINEAR ACTUATOR WITH DAMPING AND SPEED CONTROL DEVICE
JP4759282B2 (en) * 2005-02-14 2011-08-31 中村工機株式会社 Two-stage pressure absorption piston type accumulator
DE102006014756A1 (en) * 2006-03-30 2007-10-04 Zf Friedrichshafen Ag Hydraulic fluid storing device for vehicle gear unit, has limiting device and/or housing device retained by retaining device in operating condition against resetting effort of housing and/or limiting devices based on operating condition
DE102017204454A1 (en) 2017-03-16 2018-09-20 Robert Bosch Gmbh Storage piston, in particular for a pressure fluid accumulator of a hydraulic unit of an electronic slip-controllable vehicle brake system
DE102020005257A1 (en) 2020-08-27 2022-03-03 Hydac Technology Gmbh piston accumulator
EP4039986A1 (en) * 2021-02-08 2022-08-10 Roth Hydraulics GmbH Hydraulic storage device
DE102021003255A1 (en) * 2021-06-24 2022-12-29 Hydac Technology Gmbh hydraulic accumulator
DE102022000098A1 (en) 2022-01-12 2023-07-13 Hydac Technology Gmbh piston accumulator
DE102022000176A1 (en) 2022-01-18 2023-07-20 Hydac Technology Gmbh piston accumulator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755342A (en) * 1954-03-12 1956-08-22 Keelavite Co Ltd Improvements in or relating to free piston hydraulic accumulators
DE1039844B (en) * 1957-05-23 1958-09-25 Pumpenfabrik Urach Hydraulic working cylinder with damping device
DE1175995B (en) * 1960-07-12 1964-08-13 Teves Kg Alfred Hydraulic damping device for the stroke ends of piston rod cylinders
DE2027395A1 (en) * 1970-06-04 1971-12-09 Hennecke E Double-acting pressurized working cylinder with end position cushioning
DE2240980A1 (en) * 1972-08-21 1974-03-07 Adam Dipl Ing Elmer DEVICE FOR DAMPING THE PISTON IMPACT IN HYDRAULIC WORK CYLINDERS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755342A (en) * 1954-03-12 1956-08-22 Keelavite Co Ltd Improvements in or relating to free piston hydraulic accumulators
DE1039844B (en) * 1957-05-23 1958-09-25 Pumpenfabrik Urach Hydraulic working cylinder with damping device
DE1175995B (en) * 1960-07-12 1964-08-13 Teves Kg Alfred Hydraulic damping device for the stroke ends of piston rod cylinders
DE2027395A1 (en) * 1970-06-04 1971-12-09 Hennecke E Double-acting pressurized working cylinder with end position cushioning
DE2240980A1 (en) * 1972-08-21 1974-03-07 Adam Dipl Ing Elmer DEVICE FOR DAMPING THE PISTON IMPACT IN HYDRAULIC WORK CYLINDERS

Also Published As

Publication number Publication date
DE3712671A1 (en) 1988-10-27
JPS63308202A (en) 1988-12-15
EP0286777A2 (en) 1988-10-19

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