GB2235961A - A piston assembly for use with a hydraulic cylinder - Google Patents

A piston assembly for use with a hydraulic cylinder Download PDF

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Publication number
GB2235961A
GB2235961A GB9004371A GB9004371A GB2235961A GB 2235961 A GB2235961 A GB 2235961A GB 9004371 A GB9004371 A GB 9004371A GB 9004371 A GB9004371 A GB 9004371A GB 2235961 A GB2235961 A GB 2235961A
Authority
GB
United Kingdom
Prior art keywords
insert
piston
recess
piston assembly
piston rod
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
GB9004371A
Other versions
GB2235961B (en
GB9004371D0 (en
Inventor
Boris Kopacin
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.)
Automotive Products France SA
Original Assignee
Automotive Products France 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 Automotive Products France SA filed Critical Automotive Products France SA
Publication of GB9004371D0 publication Critical patent/GB9004371D0/en
Publication of GB2235961A publication Critical patent/GB2235961A/en
Application granted granted Critical
Publication of GB2235961B publication Critical patent/GB2235961B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0685—Manufacture of ball-joints and parts thereof, e.g. assembly of ball-joints
    • F16C11/069—Manufacture of ball-joints and parts thereof, e.g. assembly of ball-joints with at least one separate part to retain the ball member in the socket; Quick-release systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/08—Input units; Master units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0628—Construction or details of the socket member with linings
    • F16C11/0633—Construction or details of the socket member with linings the linings being made of plastics
    • F16C11/0638—Construction or details of the socket member with linings the linings being made of plastics characterised by geometrical details
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies

Abstract

The piston assembly includes a piston member 14 defining a recess 29 in an end face and an annular insert 19 located in the recess for receiving an end 35 of a piston rod 17. The insert 19 includes an end section 19 and arms 24 each of which includes a first retention section 26 for retaining the end of the piston rod therein and a second retention section 27 which co-operates with retention shoulder 33 of the piston member 14 to inhibit withdrawal of the insert 18 from the recess. The insert is resilient so as to deform to allow insertion of the piston rod end 35. <IMAGE>

Description

A PISTON ASSEMBLY FOR USE WITH A HYDRAULIC CYLINDER The invention relates to a piston assembly for a hydraulic cylinder.
In International Patent Application No.PCT/GB88/00317 there is described a piston assembly for use with a hydraulic cylinder, the piston assembly including a piston member defining a recess in an end face and an annular insert located in the recess for receiving an end of a piston rod, the inset including retention means for retaining the piston rod end therein. The insert described is held in the recess by friction fitting or by an adhesive.
One object of the present invention is to provide a piston assembly in which the insert is retained in the recess in an improved manner.
According to one aspect of the invention there is provided a piston assembly for use with a hydraulic cylinder and including a piston member defining a recess in an end face and an annular insert located in the recess for receiving an end of a piston rod, the insert including first retention means for retaining the piston rod end therein, and second retention means which co-operates with a surface of the piston member to inhibit withdrawal of the insert from the recess.
The use of the second retention means avoids the need for adhesive or the dimensioning of parts to provide a friction fit and is, therefore, highly advantageous.
According to a second aspect of the invention there is provided for a piston assembly for use with a hydraulic cylinder and including a piston member defining a recess in an end face, an annular insert for location in the recess for receiving an end of a piston rod, the insert including first retention means for retaining the piston rod therein, and second retention means co-operable with a surface of the piston member to inhibit withdrawal of the insert from the recess.
Preferably the insert is resiliently deformable to permit insertion thereof into the recess. The second retention means may be arranged to resiliently engage a retention surface in the recess to retain the insert in the recess.
Preferably the insert is resiliently deformable to permit the introduction of the end of the piston rod into the insert after the insert has been located in the recess. That arrangement is particularly useful in that the insert can be located in the piston member at a convenient point during assembly and the piston rod subsequently introduced in the insert.
In order to permit an outward resilient expansion or flexing of a portion of the insert during introduction of the piston rod in the insert, a clearance may be defined between said portion of the insert and an adjacent surface of the recess.
Following such expansion, the portion of the insert is preferably arranged to snap back towards its undeformed condition whereby the first said retention means locates in a retention groove or the like in the end of the piston rod.
Preferably the resilience of the inset causes the insert to be gripped between the retention surface in the recess and a further surface of the recess to inhibit axial movement of the insert in the recess.
The resilient deformation of the insert may be made easier by the formation of an area of reduced cross section on the insert which will bend when introducing the end of the piston rod.
Preferably the resilience of the insert causes the end of the piston rod to be gripped between a retention surface and a further surface of the insert to inhibit axial movement of the piston rod in the insert. In such a case, the end of the piston rod and the retention and further surfaces of the insert may be formed to permit the said end of the piston rod to pivot within the insert. Preferably the retention and further surfaces are spherical with.a substantially common centre of curvature and the said end of the piston rod slidably engages the spherical surfaces.
Conveniently, the second retention means may be formed on a flexible arm of the insert. The arm may extend axially of the insert preferably from an end section of the insert through which thrust load is transmitted between the piston rod and the piston.
Conveniently the first retention means may be formed on a flexible arm of the insert. As above, the arm may extend axially of the insert preferably from the end section of the insert.
Preferably, the first and second retention means are carried on a common arm and may take the form of radially outward and radially inward projections on the arms respectively.
Where the aforesaid area of reduced cross-section is present, the area may be formed in the arm carrying the first and second retention means to permit resilient deformation of the arm during the introduction of the end of the piston rod in the insert. Preferably the area of reduced cross section is adjacent the first and second retention means on the arm. Preferably, the resilient deforming causes the arm to bend about one end by which it is supported by part of the insert and about the second retention means in engagement with a retention surface of the recess.
A plurality of said arms may be provided which are circumferentially spaced apart.
The piston is preferably slidably mounted in a bore of a hydraulic master or slave cylinder.
A piston assembly in accordance with the invention will now be described by way of example with reference to the accompanying drawings in which: Fig.l is a diagrammatic cross-section through a piston assembly in accordance with the invention in the bore of a hydraulic master cylinder, Fig.2 is an end view of an insert for the piston in Fig.1 drawn to a larger scale, Fig.3 is a cross-section of the insert of Fig.2 on the line III-III in Fig.2, Fig.4 is a view of the insert end of the piston in Fig.l drawn to a larger scale with the push rod removed and with the insert shown diagrammatically and partly located in the piston member, Fig.5 is a view similar to Fig.4 showing the insert diagrammatically and fully located in the piston member.
Fig.6 is a view similar to Fig.5 with the pushrod partly located in the insert, and Fig.7 is a view similar to Fig.6 with the pushrod fully located in the insert.
In Fig.1, a master cylinder comprises a cylinder body 12 formed with a bore 13 in which a piston assembly 11 is slidable. The bore 13 communicates with a reservoir 15 and an outlet port 16 is provided through which working fluid passes when the piston assembly 11 is moved to the left as viewed in the drawing by means of a pushrod 17. The cylinder operates in the manner described in the aforesaid International Application No.PCT/GB88/00317.
The piston assembly 11 includes a piston 14 and an insert 18 which is illustrated in detail in Figs.2 and 3. The insert comprises a moulded plastics cuplike end section 19 having a substantially conical outer end surface 20, a cylindrical outer periphery 22 and a concave spherical inner end surface 23. Six arms 24 are integral with and extend axially from the end section 19 and are circumferentially spaced apart. Each arm 24 has an enlargement 25 at its free end. The enlargement extends radially inwardly of its arm to form a first retention section 26 and radially outwardly to form a second retention section 27. The first retention section 26 defines a spherical inner retention surface 26a and the second retention section defines an outer inclined retention surface 27a. The enlargement 25 has a frusto conical outer lead-in surface 25a and a frusto conical inner lead-in surface 25b. The lead in surface 25b and the retention surface 27 intersect at a corner 28. An area 21 of reduced cross-section is formed in each arm 24 adjacent its enlargement 25.
The spherical surfaces 23, 26a have a common centre of curvature C when the insert is located in the recess 29 and constitute the aforesaid retention and further surfaces of the insert.
The insert 18 locates in a recess 29 of the piston member 14. The recess comprises a blind end bore 30 having conical end wall 30a and a cylindrical wall 30b of substantially complementary shape to outer surfaces 20, 22 of the insert 18, a relatively wider cylindrical section 32 defining a clearance 32a, a frusto conical retention shoulder 33 inclined at the same angle as retention surface 27a and a cylindrical entry section 34 through which the end section 19 of the insert 18 can pass.
To assembly the insert 18 into the piston member 14, the insert is introduced in the recess 29 by passing the end section 19 along the entry section 34. The right-hand end of the entry section terminates at a corner 34a which engages the outer lead-in surfaces 25a and causes the arms 24 to bend inwardly as shown in Fig.4 Eventually the enlargements 25 snap outwardly to urge the retention surfaces 27a against the retention shoulder 33 as in Fig.5. The inclination of surfaces 27a and shoulder 33 does not permit the insert to expand to a fully relaxed position as in Figs.2 and 3.Instead, the retention surfaces 27a and the retention shoulder 33 resiliently interengage so as to retain the insert firmly with the recess to inhibit axial movement thereof, the resilient interengagement of surfaces 27a, and shoulder 33 creating an axial load which urges the end wall 30a of the end section 19 against the end wail 3Oa of the blind end bore 30. The retention shoulder 33 and end wall 30a constitute the aforesaid retention and further surfaces of the recess.
With the insert 18 in position, the pushrod 17 can be introduced. The pushrod 17 has an end section 35 having a spherical end surface 36, a cylindrical outer periphery 37 and a retention groove 38 having a spherical left hand wall 38a. On introducing the end section 35 into the insert, the spherical end surface 36 initially engages the inner lead-in surfaces 25b and causes the arms 24 and enlargements 25 to move outwardly into clearance 32a to the position shown in Fig.6 to permit the outer periphery 37 of the end section 35 to move past corners 28. The outward movement of the enlargements 25 causes each of the arms 24 to bend resiliently about its left-hand ends at the juncture with the end section 19 of the insert and to bend resiliently at the area 21 of reduced cross-section.Once the cylindrical periphery 37 of the piston rod end section 35 clears the corners 28, the enlarged ends 25 snap back inwardly so that spherical inner retention surfaces 26a resiliently engage the spherical wall 38a of retention groove 38 and urge the spherical end 36 of the piston rod 17 axially into engagement with the spherical inner surface 23 of the insert 18 as in Fig.7. The end section 35 is thereby gripped by the insert 18 as shown in full lines in Fig.5, the spherical surfaces 23, 26a, 36, 38a permitting a degree of pivoting of the end 35 pushrod 17 relative to the insert as shown in broken lines in Fig.7. During pivoting the surfaces 36, 38a slide on surfaces 29, 26a respectively. It will be noted that once the end section 35 is located in the insert the spherical surfaces 36, 38a will have the common centre of curvature C.
The pushrod 17 can be released from the insert by applying an axial force to the right sufficient to cause the insert 18 to deform resiliently as shown in Fig.6 If desired the insert 18 may be used on a piston member of a slave cylinder.
As well as permitting easy snap-fit assembly of the insert 18 into the piston member 14 and easy subsequent snap-fit assembly of the pushrod 17 into the insert, the insert design is compact and its construction from plastics will reduce likelihood of noise during pivoting of the pushrod in the insert.
The use of the insert also reduces wear occurring between the push rod and the piston member.

Claims (19)

1. A piston assembly for use with a hydraulic cylinder and including a piston member defining a recess in an end face and an annular insert located in the recess for receiving an end of a piston rod, the insert including first retention means for retaining the piston rod therein, and second retention means which co-operates with a surface of the piston member to inhibit withdrawal of the insert from the recess.
2. A piston assembly according to Claim 1 in which the insert is resiliently deformable to permit insertion thereof into the recess.
3. A piston assembly according to Claim 2 in which the second retention means is arranged to resiliently engage a retention surface in the recess to retain the insert in the recess.
4. A piston assembly according to Claim 3 in which the resilience of the insert causes the insert to be gripped between the retention surface in the recess and a further surface of the recess to inhibit axial movement of the insert in the recess
5. A piston assembly according to any preceding claim in which the insert is resiliently deformable two permit the introduction of the end of the piston rod into the insert after the insert has been located in the recess.
6. A piston assembly according to Claim 5 in which a clearance is defined between a portion of the insert and a surface the recess to permit outward resilient flexing of the portion of the insert during introduction of the end of the piston rod into the insert.
7. A piston according to any preceding claim in which the end of the piston rod is pivotable within the insert.
8. A piston assembly according to any preceding claim in which the resilience of the insert causes the end of the piston rod to be gripped between a retention surface and a further surface of the insert to inhibit axial movement of the piston rod in the insert.
9. A piston assembly according to Claim 8 in which the end of the piston rod and the retention and further surfaces of the insert are formed to permit the said end of the piston rod to pivot within the insert.
10. A piston assembly according to Claim 9 in which the retention and further surfaces are spherical with a substantially common centre of curvature and the said end of the piston rod slidably engages the spherical surfaces.
11. A piston according to any preceding Claim in which said second retention means is formed on a arm of the insert.
12. A piston assembly according to any preceding Claim in which the first retention means is formed on an arm of the insert.
13. A piston assembly according to Claim 11 or 12 in which the first retention means is carried by the same arm as the second retention means.
14. A piston assembly according to Claim 13 in which the arm is formed with a reduced cross-section portion which permits resilient deformation of the arm during introduction of the end of the piston rod into the insert.
15. A piston assembly according to any of Claims 11 to 14 in which a plurality of said arms is provided the arms being circumferentially spaced apart.
16. A piston assembly according to any preceding claim in which the piston member is slidably mounted in a bore of a hydraulic master or slave cylinder.
17. A piston assembly constructed and arranged substantially as described herein with reference to the accompanying drawings.
18. For a piston assembly for use with a hydraulic cylinder and including a piston member defining a recess in an end face, an annular insert for location in the recess for receiving an end of a piston rod, the insert including first retention means for retaining the piston rod therein, and second retention means co-operable with a surface of the piston member to inhibit withdrawal of the insert from the recess.
19. For a piston assembly for use with a hydraulic cylinder and including a piston member defining a recess in an end face, an annular insert constructed and arranged substantially as described heein with reference to the accompanying drawings.
GB9004371A 1989-09-13 1990-02-27 A piston assembly for use with a hydraulic cylinder Expired - Fee Related GB2235961B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8911981A FR2651838B1 (en) 1989-09-13 1989-09-13 PISTON ASSEMBLY FOR USE WITH A HYDRAULIC CYLINDER.

Publications (3)

Publication Number Publication Date
GB9004371D0 GB9004371D0 (en) 1990-04-25
GB2235961A true GB2235961A (en) 1991-03-20
GB2235961B GB2235961B (en) 1993-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9004371A Expired - Fee Related GB2235961B (en) 1989-09-13 1990-02-27 A piston assembly for use with a hydraulic cylinder

Country Status (2)

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FR (1) FR2651838B1 (en)
GB (1) GB2235961B (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232807A1 (en) * 1992-02-14 1993-08-19 Teves Gmbh Alfred PISTON WITH A CLAMPING ROD ROD
WO1998019067A1 (en) * 1996-10-29 1998-05-07 Zanussi Elettromeccanica S.P.A. Piston with releasable rod connection for refrigeration compressors
DE19752076A1 (en) * 1997-11-25 1999-05-27 Schaeffler Waelzlager Ohg Piston rod fastening on piston of master cylinder
US5947249A (en) * 1996-06-18 1999-09-07 Valeo Device for fixing and articulating a master cylinder on a motor vehicle clutch pedal
DE10026799A1 (en) * 1999-06-02 2001-05-31 Valeo Hydraulic cylinder, in particular clutch master cylinder, with improved means for axially holding the rod and the piston
WO2001094799A1 (en) * 2000-06-08 2001-12-13 Fico Cables, S.A. Connecting element
FR2812923A1 (en) * 2000-08-11 2002-02-15 Valeo Coupling of lever to hydraulic clutch cylinder piston comprises rigid rod which penetrates piston recess and fixed to recess by ball joint via insert and is locked relative to piston by stop and washer
DE10062988A1 (en) * 2000-12-16 2002-07-11 Zf Sachs Ag Piston for master/slave cylinders for hydraulic actuator in IC engines has plastic piston with piston link head providing ball seat for articulated support of tappet ball
FR2823543A1 (en) * 2001-04-11 2002-10-18 Spc France Mechanical coupling e.g. for medication dosing pump has ball fixed to one component, fitting into cavity in other and retained by ring
WO2003044377A1 (en) * 2001-11-21 2003-05-30 Fico Cables, S.A. Connecting element
US6711986B2 (en) 2000-08-11 2004-03-30 Valeo Device for coupling a lever to a shift cylinder piston
US6837145B1 (en) 2002-12-18 2005-01-04 Air Power Systems Co., Inc. Fluid powered actuator
WO2006074915A1 (en) * 2005-01-12 2006-07-20 Aerolas Gmbh Axially driven piston-cylinder unit
US7188563B2 (en) * 2004-11-05 2007-03-13 Fte Automotive Gmbh Piston arrangement of a hydraulic actuating device on motor vehicles
CN103260974A (en) * 2010-12-21 2013-08-21 罗伯特·博世有限公司 Plastic primary piston with pressed sheet metal functional insert for penetration-ype tandem master cylinder and master cylinder fitted with such piston
WO2015086071A1 (en) * 2013-12-12 2015-06-18 Kongsberg Automotive Ab Ball joint connector
DE102016218183A1 (en) 2016-09-06 2018-03-08 Continental Teves Ag & Co. Ohg Brake device for a hydraulic motor vehicle brake system
CN108909690A (en) * 2018-07-19 2018-11-30 宁波拓普智能刹车系统有限公司 A kind of pedal input structure of integrated electrical control braking force aid system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788096B1 (en) * 1998-12-30 2001-03-02 Valeo CLUTCH TRANSMITTER HYDRAULIC CYLINDER COMPRISING IMPROVED PISTON ROD ARTICULATION MEANS
DE102010054291A1 (en) 2009-12-22 2011-06-30 Schaeffler Technologies GmbH & Co. KG, 91074 Master cylinder device for hydraulic system of motor vehicle, has piston movable to and fro in master cylinder, and joint socket provided at piston rod that is hinged at piston using socket, where joint head is provided at piston
FR3037547B1 (en) * 2015-06-22 2019-07-05 Robert Bosch Gmbh MASTER CYLINDER TANDEM EQUIPPED WITH A STOP LIGHT SWITCH
DE102018217422A1 (en) * 2018-10-11 2020-04-16 Continental Teves Ag & Co. Ohg Piston unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB456190A (en) * 1935-09-10 1936-11-04 Light Production Company Ltd Improvements in pistons
GB527529A (en) * 1939-04-14 1940-10-10 Thomas Winsmore Langley Improvements in or relating to reciprocating pumps
GB915498A (en) * 1960-11-02 1963-01-16 Linde Eismasch Ag Improvements in or relating to hydraulic energy converters
GB1114825A (en) * 1964-11-04 1968-05-22 Bofors Ab Piston unit for a hydraulic damping device
GB1354985A (en) * 1970-06-30 1974-06-05 Renault Ball-joint retainers for the pistons of hydraulic pumps and motors
GB1467305A (en) * 1973-08-09 1977-03-16 Stabilimenti Meccanici Vm Spa Connecting-rod and piston assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010772A (en) * 1959-11-25 1961-11-28 Gen Motors Corp Brake pedal return
US3107111A (en) * 1960-08-12 1963-10-15 Bendix Corp Fastening means for ball-ended members
GB2112448B (en) * 1981-12-24 1985-05-30 Automotive Prod Co Ltd Ball and socket joints

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB456190A (en) * 1935-09-10 1936-11-04 Light Production Company Ltd Improvements in pistons
GB527529A (en) * 1939-04-14 1940-10-10 Thomas Winsmore Langley Improvements in or relating to reciprocating pumps
GB915498A (en) * 1960-11-02 1963-01-16 Linde Eismasch Ag Improvements in or relating to hydraulic energy converters
GB1114825A (en) * 1964-11-04 1968-05-22 Bofors Ab Piston unit for a hydraulic damping device
GB1354985A (en) * 1970-06-30 1974-06-05 Renault Ball-joint retainers for the pistons of hydraulic pumps and motors
GB1467305A (en) * 1973-08-09 1977-03-16 Stabilimenti Meccanici Vm Spa Connecting-rod and piston assembly

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0625108B1 (en) * 1992-02-14 1996-05-15 ITT Automotive Europe GmbH Piston with rod snapped in by means of a holding element
DE4232807A1 (en) * 1992-02-14 1993-08-19 Teves Gmbh Alfred PISTON WITH A CLAMPING ROD ROD
US5947249A (en) * 1996-06-18 1999-09-07 Valeo Device for fixing and articulating a master cylinder on a motor vehicle clutch pedal
WO1998019067A1 (en) * 1996-10-29 1998-05-07 Zanussi Elettromeccanica S.P.A. Piston with releasable rod connection for refrigeration compressors
CN1076795C (en) * 1996-10-29 2001-12-26 扎纳西电机公司 Piston with releasable rod connection for refrigeration compressors
DE19752076A1 (en) * 1997-11-25 1999-05-27 Schaeffler Waelzlager Ohg Piston rod fastening on piston of master cylinder
DE10026799A1 (en) * 1999-06-02 2001-05-31 Valeo Hydraulic cylinder, in particular clutch master cylinder, with improved means for axially holding the rod and the piston
DE10026799B4 (en) * 1999-06-02 2017-03-09 Valeo Hydraulic cylinder, in particular clutch master cylinder, with improved means for axially holding the rod and the piston
US7004664B2 (en) 2000-06-08 2006-02-28 Fico Cables, S.A. Connecting element
WO2001094799A1 (en) * 2000-06-08 2001-12-13 Fico Cables, S.A. Connecting element
DE10193440B3 (en) * 2000-08-11 2013-07-11 Valeo Device for connecting a lever to the piston of a shift cylinder
KR100919347B1 (en) 2000-08-11 2009-09-25 발레오 Device for coupling a lever to a shift cylinder piston
FR2812923A1 (en) * 2000-08-11 2002-02-15 Valeo Coupling of lever to hydraulic clutch cylinder piston comprises rigid rod which penetrates piston recess and fixed to recess by ball joint via insert and is locked relative to piston by stop and washer
US6711986B2 (en) 2000-08-11 2004-03-30 Valeo Device for coupling a lever to a shift cylinder piston
WO2002014705A1 (en) * 2000-08-11 2002-02-21 Valeo Device for coupling a lever to a shift cylinder piston
DE10062988A1 (en) * 2000-12-16 2002-07-11 Zf Sachs Ag Piston for master/slave cylinders for hydraulic actuator in IC engines has plastic piston with piston link head providing ball seat for articulated support of tappet ball
DE10062988B4 (en) * 2000-12-16 2005-10-06 Zf Sachs Ag Hydraulic actuator on motor vehicles
FR2823543A1 (en) * 2001-04-11 2002-10-18 Spc France Mechanical coupling e.g. for medication dosing pump has ball fixed to one component, fitting into cavity in other and retained by ring
WO2003044377A1 (en) * 2001-11-21 2003-05-30 Fico Cables, S.A. Connecting element
US7396183B2 (en) 2001-11-21 2008-07-08 Fico Cables, S.A. Connecting element
US6837145B1 (en) 2002-12-18 2005-01-04 Air Power Systems Co., Inc. Fluid powered actuator
US7188563B2 (en) * 2004-11-05 2007-03-13 Fte Automotive Gmbh Piston arrangement of a hydraulic actuating device on motor vehicles
WO2006074915A1 (en) * 2005-01-12 2006-07-20 Aerolas Gmbh Axially driven piston-cylinder unit
CN103260974A (en) * 2010-12-21 2013-08-21 罗伯特·博世有限公司 Plastic primary piston with pressed sheet metal functional insert for penetration-ype tandem master cylinder and master cylinder fitted with such piston
US9528605B2 (en) 2010-12-21 2016-12-27 Robert Bosch Gmbh Plastic primary piston with stamped sheet-metal functional insert for penetration-type tandem master cylinder and master cylinder equipped with such a piston
CN103260974B (en) * 2010-12-21 2017-04-26 罗伯特·博世有限公司 Plastic primary piston with pressed sheet metal functional insert for penetration-ype tandem master cylinder and master cylinder fitted with such piston
WO2015086071A1 (en) * 2013-12-12 2015-06-18 Kongsberg Automotive Ab Ball joint connector
US10138927B2 (en) * 2013-12-12 2018-11-27 Kongsberg Automotive Ab Ball joint connector
DE102016218183A1 (en) 2016-09-06 2018-03-08 Continental Teves Ag & Co. Ohg Brake device for a hydraulic motor vehicle brake system
US11247650B2 (en) 2016-09-06 2022-02-15 Continental Teves Ag & Co. Ohg Brake device for a hydraulic motor vehicle brake system
CN108909690A (en) * 2018-07-19 2018-11-30 宁波拓普智能刹车系统有限公司 A kind of pedal input structure of integrated electrical control braking force aid system

Also Published As

Publication number Publication date
GB2235961B (en) 1993-11-17
FR2651838A1 (en) 1991-03-15
FR2651838B1 (en) 1994-06-03
GB9004371D0 (en) 1990-04-25

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