DE1926000A1 - Sealing separating piston - Google Patents

Sealing separating piston

Info

Publication number
DE1926000A1
DE1926000A1 DE19691926000 DE1926000A DE1926000A1 DE 1926000 A1 DE1926000 A1 DE 1926000A1 DE 19691926000 DE19691926000 DE 19691926000 DE 1926000 A DE1926000 A DE 1926000A DE 1926000 A1 DE1926000 A1 DE 1926000A1
Authority
DE
Germany
Prior art keywords
sealing
separating piston
membrane
closing element
piston according
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.)
Pending
Application number
DE19691926000
Other languages
German (de)
Inventor
Robinson Barry Samuel John
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.)
Girling Ltd
Original Assignee
Girling Ltd
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 Girling Ltd filed Critical Girling Ltd
Publication of DE1926000A1 publication Critical patent/DE1926000A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04Devices damping pulsations or vibrations in fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/066Units characterised by the partition, baffle or like element
    • F16F9/067Partitions of the piston type, e.g. sliding pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/005Pistons; Trunk pistons; Plungers obtained by assembling several pieces
    • F16J1/006Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04Devices damping pulsations or vibrations in fluids
    • F16L55/045Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/05Buffers therefor
    • F16L55/052Pneumatic reservoirs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Diaphragms And Bellows (AREA)

Description

Be schreibung Abdichtender Trennkolben.Description of the sealing piston.

Die Erfindung bezieht sich auf einen abdiohtenden Trennkolben und betrifft insbesondere einen in druckbeaufschlagten Stoßdämpfern verwendeten Trennkolben, der eine Gasmenge von einer Flussigkeitsmenge in einem Zylindes eines Stoßdämpfern trennt. The invention relates to a detaching separating flask and relates in particular to a separating piston used in pressurized shock absorbers, of an amount of gas from an amount of liquid in a cylinder of a shock absorber separates.

Derartige Trennkolben sind normalerweise in geschlossener, zylindrisoher, starrer Bauweise hergestellt und mit Außenringnuten versehen, in denen Dichtringe, gewöhnlich mit ringförmigem Quersohnitt (oder 0-Singe), aufgenommen sind. Eine Schwierigkeit, die sich bei Verwendung derartiger Trenakolben einstellt, besteht darin, daß der 0-Hing den Schwingungen des Kolbens mit hoher Frequenz und kleiner Amplitude nicht standhält, und das es zu einer Emulgierubg kommen kann. Such separating pistons are normally in a closed, cylindrical, made of rigid construction and provided with outer ring grooves in which sealing rings, usually with ring-shaped cross-sons (or 0-sings). A problem, which occurs when using such Trenacob, is that the 0-hung the oscillations of the piston with high frequency and small amplitude not withstands, and that emulsification can occur.

Ein bekannter Vorschlag, der diese Schwierigkeit beseitigen sollte, sah vor die axiale Abmessung der Nut zu vergrößern, so daß der Ring unter diesen Sohwingungen mit hoher Frequenz Rollbewegungen ausführen konnte. Es hat sich jedoch gezeigt, daß dieses Abwälzen des Ringes an verschiedenen Punkten um den 0-Ring herum uiigleichmäßig erfolgt und daß eine Torsionspannung erzeugt wird, die zum Bruch des Ringes führt. Es ist auch vorgeschlagen worden, eine befestigte, elastische membran als Drennkolben yorzusehen; aber die Lebensdauer einer solchen Membran ist ungewiß angesiohts des großen Oberflächenbereiche der Menibran, der Temperaturen, denen sie im Gebrauch ausgesetzt ist, sowie angesichts der vielen Biegebewegungen, die sie ausführen muß. A well-known suggestion that should overcome this difficulty is saw in front of the axial dimension of the groove to enlarge so that the ring under them Such vibrations could roll movements with high frequency. It has, however shown that this rolling of the ring at various points around the O-ring takes place unevenly and that a torsional stress is generated that leads to breakage of the ring leads. It has also been suggested a fortified, elastic membrane to be seen as a piston; but the lifespan of such The membrane is uncertainly due to the large surface area of the Menibran, the Temperatures to which it is exposed in use, as well as in the face of many Bending movements that she has to perform.

Gemäß der Erfindung wird ein abdichtender Trennkolben geschaffen, durch dessen Aufbau die oben erwaiinten Schwierigkeiten umgangen sind. In groben Zügen besteht die Erfindung in einem im wesentlichen starren, ringförmigen Körper, um dessen äußeren Umfang sich ein Dicht ring erstreckt und dessen innerer erschnitt von einem flexiblen Schließelement abgeschlossen ist. Das flexible Schließelement kann z.B. die Form einer Membran oder eines Balges aufweisen. According to the invention, a sealing separating piston is created, its structure circumvents the difficulties mentioned above. In rough Trains the invention consists in a substantially rigid, annular body, around the outer periphery of a sealing ring extends and cut its inner is completed by a flexible closing element. The flexible closing element may, for example, be in the form of a membrane or a bellows.

Die Erfindung erstreckt sich auch auf einen mit einem Druckmittel arbeitenden StoßdEmpfer, in dem ein solcher Trennkolben vorgesehen ist. The invention also extends to one with a pressure medium working shock absorber in which such a separating piston is provided.

Die Erfindung und vorteilhafte Einzelheiten der Erfindung werden im folgenden anhand von schematischen Zeichnungen zweier Ausführungsbeispiele näher erläutert. The invention and advantageous details of the invention will become in the following with reference to schematic drawings of two embodiments explained.

Fig. 1 und 2 zeigen Axialsohnitte durch zwei Ausführungebeispiele eines abdichtenden Trennkclbens gemäß der Erfindung. 1 and 2 show the axial center through two exemplary embodiments a sealing separator according to the invention.

Die in den Zeichnungen dargestellten Trennkolben sind in erster Linie zur Verwendung als rrrennkclben in mit Druckmitteln arbeitenden Stoßdämpfern gedacht. Jeder hat einen im wesentlichen starren, ringförmigen Körper 1, der mit einer Außenringnut zur Aufnahme eines O-Ringes 2 aus Gummi oder einem anderen elastomeren Werkstoff ausgebildet ist und dessen innerer querschnitt von einer flexiblen Membran 3 aus Gummi, kunststoff oder Metall abgeschlossen gehalten ist.The floating pistons shown in the drawings are primarily intended for use as a racing piston in shock absorbers that work with pressure media. Each has a substantially rigid, annular body 1, which is provided with an outer annular groove for receiving an O-ring 2 made of rubber or another elastomeric material is formed and the inner cross section of a flexible membrane 3 from Rubber, plastic or metal is kept closed.

Bei dem in i?ig. 1 gezeigten Ausführungsbeispiel hat die Membran einen verdickten Wulst 4, der direkt in einer ringfdrmigen Ausnehmung im Körper 1 aufgenommen ist, während die Membran beim Aus:thrungsbeispiel gemäß Fig. 2 zwischen zwei mit öffnungen 7 ausvebildeten Halteplatten 6 angeordnet ist, die die Biegebewegungen der Iielllbran in zwei einander entgegengesetzten Richtungen begrenzen. Bei diesem Ausführungsbeispiel ist der Wulst 4 direkt in einem zwischen den Platten 6 ausgebildeten Ringraum aufgenommen. In the i? Ig. 1 has the membrane a thickened bead 4 which sits directly in an annular recess in the body 1 is added, while the membrane in Aus: thrungsbeispiel according to FIG. 2 between two retaining plates 6 formed with openings 7 are arranged, which hold the bending movements limit the Iielllbran in two opposite directions. With this one The embodiment is the bead 4 directly in one formed between the plates 6 Annular space added.

In der praktischen Anwendung werden die Schwingungen von hoher Frequenz und kleiner Amplitude durch die Bewegung der Membran ohne eine Gleitbewegung des Dichtelements 2 aufgenommen, dessen Abnutzung durch Gleitbewegungen folglich sehr stark herabgesetzt ist. In practical use, the vibrations are of high frequency and small amplitude due to the movement of the diaphragm without sliding movement of the Sealing element 2 added, its wear by sliding movements consequently very much is greatly reduced.

Die Membran könnte natürlich auch durch andere AusfUhrungaformen flexibler Schließelemente ersetzt sein, beispielsweise durch einen Balg. Es liegt auf der Hand, daß ein Trennkolben der oben beschriebenen Bauart nicht nur in druckbeaufschlagten Stoßdämpfern, sondern auch anderweitig zweckmäßige Verwendung finden kann. The membrane could of course also have other designs be replaced by flexible closing elements, for example by a bellows. It lies It is obvious that a separating piston of the type described above is not only pressurized Shock absorbers, but can also be used for other purposes.

Patentansprüche Claims

Claims (6)

P a t e n t a n s p r ü c h e (1 Abdichtender 1'reimlcolben, bei dem sich um den Außenumfang eines geschlossenen, zylindrischen, starren körpers ein Dichtring erstreckt, dadurch g e k e n n z e i c h n e t, daß der Körper (1) von einem starren Ring gebildet ist, dessen innerer Querschichnitt durch ein flexibles Schliebelement (3) verschlossen gehalten ist. P a t e n t a n s p r ü c h e (1 sealing 1'reiml piston, at around the outer circumference of a closed, cylindrical, rigid body a sealing ring extends, characterized in that the body (1) is formed by a rigid ring, the inner cross-section of which by a flexible Closing element (3) is kept closed. 2. Abdichtender Trennkolben nach Anspruch 1, dadurch g e -k e n n z e i c h il e t, dad das Schließelement in Yorm einer flexiblen Membran (3) vorgeseilen ist.2. Sealing separating piston according to claim 1, characterized in that g e -k e n n z e i c h il e t that the closing element in Yorm of a flexible membrane (3) roped forward is. 3. Abdichtender Trennkolben nach Anspruch 2, dadurch g e -k e n n z e i c h n e t, daß die membran (3) einen verdickten Wulst (4) hat, der direkt in einer ringförmigen Ausnehmung im Körper (1) aufgenommen ist.(?ig. 1).3. Sealing separating piston according to claim 2, characterized in that g e -k e n n z e i c h n e t that the membrane (3) has a thickened bead (4) that directly is received in an annular recess in the body (1) (? ig. 1). 4. Abdich-ender Trennkolben nach Anspruch 3, dadurch g e -k e n n z e i c h n e t, daß die Membran (3) zwischen zwei, Öffnungen (7) aufweisenden Platten (6) zur Begrnzung der Membranbewegungen angeordnet ist, wobei der Wulst (4) direkt in einem zwischen den Platten (6) ausgebildeten Ringraum aufgenormen ist, (ig. 2) 4. sealing ender separating piston according to claim 3, characterized g e -k e n n z e i c h n e t that the membrane (3) between two, openings (7) having plates (6) is arranged to limit the diaphragm movements, the bead (4) directly is upturned in an annular space formed between the plates (6), (Fig. 2) 5. Abdichtender Trennkolben nach Anspruch 1, dadurch g e k e n n z e i c h n e t, daß das Schließelement in Form eines balges vorgesehen ist.5. Sealing separating piston according to claim 1, characterized in that g e k e n n z e i c h n e t, that the closing element is provided in the form of a bellows. 6. Mit einem Druckmittel arbeitender Stoßdampfer, dessen Irennkolben nach einem der Ansprüche 1 bis 5 ausgebildet ist. 6. Shock absorber working with a pressure medium, its irenn piston is designed according to one of claims 1 to 5.
DE19691926000 1968-05-21 1969-05-21 Sealing separating piston Pending DE1926000A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2421468 1968-05-21

Publications (1)

Publication Number Publication Date
DE1926000A1 true DE1926000A1 (en) 1969-11-27

Family

ID=10208187

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691926000 Pending DE1926000A1 (en) 1968-05-21 1969-05-21 Sealing separating piston

Country Status (1)

Country Link
DE (1) DE1926000A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306377A1 (en) * 1975-03-29 1976-10-29 Freudenberg Carl SEPARATOR PISTON, ESPECIALLY FOR MOTOR VEHICLE SHOCK ABSORBERS
JPS535376A (en) * 1976-06-30 1978-01-18 Peugeot Damping device
DE2856036A1 (en) * 1978-12-23 1980-06-26 Klein Schanzlin & Becker Ag LEAK DETECTOR FOR SEALED ROOMS
DE3030234A1 (en) * 1980-08-09 1982-03-11 Reinhold Ing.(grad.) 6990 Bad Mergentheim Barlian Steam detector esp. for nuclear plant leak - has capacitor affected by presence of steam to actuate detector circuit
DE3417332A1 (en) * 1984-05-10 1985-11-21 Herbert Dipl.-Ing. 4630 Bochum Koberling Device for detecting leaks, in particular in pipelines and containers
US4838763A (en) * 1986-11-20 1989-06-13 Heyko Reinecker Canned motor pump
WO1998000653A2 (en) * 1996-07-02 1998-01-08 Lord Corporation Controllable vibration apparatus
DE19814214A1 (en) * 1998-03-31 1999-10-07 Flender A F & Co Machine element with hydraulic filling, especially bearing or shaft
DE102008060515B4 (en) * 2007-12-05 2015-08-06 Mando Corporation vibration
EP4006376A1 (en) * 2020-11-25 2022-06-01 BeijingWest Industries Co. Ltd. A gas cup for a damper assembly and a damper assembly
WO2023102521A1 (en) * 2021-12-03 2023-06-08 DRiV Automotive Inc. Vehicle suspension damper including floating piston

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306377A1 (en) * 1975-03-29 1976-10-29 Freudenberg Carl SEPARATOR PISTON, ESPECIALLY FOR MOTOR VEHICLE SHOCK ABSORBERS
JPS535376A (en) * 1976-06-30 1978-01-18 Peugeot Damping device
JPS6053213B2 (en) * 1976-06-30 1985-11-25 オ−トモビル・プジヨ− damper device
DE2856036A1 (en) * 1978-12-23 1980-06-26 Klein Schanzlin & Becker Ag LEAK DETECTOR FOR SEALED ROOMS
FR2444937A1 (en) * 1978-12-23 1980-07-18 Klein Schanzlin & Becker Ag LEAK DETECTOR FOR SEALED ENCLOSURE
DE3030234A1 (en) * 1980-08-09 1982-03-11 Reinhold Ing.(grad.) 6990 Bad Mergentheim Barlian Steam detector esp. for nuclear plant leak - has capacitor affected by presence of steam to actuate detector circuit
DE3417332A1 (en) * 1984-05-10 1985-11-21 Herbert Dipl.-Ing. 4630 Bochum Koberling Device for detecting leaks, in particular in pipelines and containers
DE3639720C1 (en) * 1986-11-20 1993-04-29 Reinecker Heyko Pump with canned motor or canned magnetic clutch drive
US4838763A (en) * 1986-11-20 1989-06-13 Heyko Reinecker Canned motor pump
DE3645260A1 (en) * 1986-11-20 1993-05-19 Hermetic Pumpen Gmbh Pump with double-walled split-tube magnetic clutch - has film in space between walls, visible from exterior as evidence of damage or liq. contact.
WO1998000653A2 (en) * 1996-07-02 1998-01-08 Lord Corporation Controllable vibration apparatus
WO1998000653A3 (en) * 1996-07-02 1998-02-12 Lord Corp Controllable vibration apparatus
US5878851A (en) * 1996-07-02 1999-03-09 Lord Corporation Controllable vibration apparatus
DE19814214A1 (en) * 1998-03-31 1999-10-07 Flender A F & Co Machine element with hydraulic filling, especially bearing or shaft
DE102008060515B4 (en) * 2007-12-05 2015-08-06 Mando Corporation vibration
EP4006376A1 (en) * 2020-11-25 2022-06-01 BeijingWest Industries Co. Ltd. A gas cup for a damper assembly and a damper assembly
US11668364B2 (en) 2020-11-25 2023-06-06 Beijingwest Industries Co., Ltd Gas cup for a damper assembly and a damper assembly
WO2023102521A1 (en) * 2021-12-03 2023-06-08 DRiV Automotive Inc. Vehicle suspension damper including floating piston
US11904647B2 (en) 2021-12-03 2024-02-20 DRiV Automotive Inc. Vehicle suspension damper including floating piston

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