CN104685270A - Seal arrangement - Google Patents

Seal arrangement Download PDF

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Publication number
CN104685270A
CN104685270A CN201380047290.9A CN201380047290A CN104685270A CN 104685270 A CN104685270 A CN 104685270A CN 201380047290 A CN201380047290 A CN 201380047290A CN 104685270 A CN104685270 A CN 104685270A
Authority
CN
China
Prior art keywords
piston
seal
holding member
lip
seal arrangement
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
CN201380047290.9A
Other languages
Chinese (zh)
Other versions
CN104685270B (en
Inventor
梅拉妮·菲舍尔
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of CN104685270A publication Critical patent/CN104685270A/en
Application granted granted Critical
Publication of CN104685270B publication Critical patent/CN104685270B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B60T11/236—Piston sealing arrangements
    • 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
    • F15B15/1452—Piston sealings
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/088—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members being distinctly separate from the axis of rotation
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/322—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip supported in a direction perpendicular to the surfaces
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/56—Other sealings for reciprocating rods
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/08—Seals, e.g. piston seals
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

The invention relates to a seal arrangement (50) for a piston/cylinder unit (51) with a cylinder (53) and a piston (52) axially displaceable in the cylinder, with an annular shoulder (54) for accepting a sealing element (57), said sealing element being substantially L-shaped or V-shaped with a moving sealing lip (60) extending in the radial direction and a static sealing lip (59) extending in the axial direction, wherein a seal retaining element (62) is provided to ensure the positional security of the sealing element (57).

Description

Seal arrangement
Technical field
The present invention relates to a kind of seal arrangement being particularly useful for piston-cylinder units, described piston-cylinder units is particularly useful for motor vehicle.
Background technique
Use in piston-cylinder units and have the seal arrangement of seal element, wherein seal element can be arranged in cylinder on displaceable piston.Especially, when piston fast return can piston on the pressure side on produce negative pressure, make seal element to lift from wall portion to be sealed by means of sealing lip and produce leakage.
Summary of the invention
Therefore the object of the invention is, provide a kind of seal arrangement, described seal arrangement constructs but the sealing allowed simply.
This object is realized by the seal arrangement with feature according to claim 1.
One embodiment of the present of invention propose a kind of seal arrangement for piston-cylinder units, described piston-cylinder units has cylinder and can the piston of axial motion in cylinder, there is the protuberance of the annular for holding seal element, described seal element be substantially L shape or v shape and there is the sealing lip of the motion seal lip that radially direction extends and the static state axially extended, it is characterized in that, be provided with sealing holding member, the position that described sealing holding member is used for seal element is fixed.Even if sealing holding member is for making seal element when there is negative pressure or also remaining on when tilting of the piston in its preposition and to guarantee the sealing of piston-cylinder units.
At this advantageously, sealing holding member has axially outstanding region, and described region overlaps static sealing lip and adjacent with motion seal lip at least in part at radially outer.Thus, motion seal lip is restricted and can not bends away from wall portion arbitrarily far in its freedom of movement, and motion seal lip abuts in described wall portion.Static sealing lip also to remain in its position and only can drop out from its normal position slightly.Seal element can not at random drop out and piston-cylinder units maintenance sealing thus.
Also meet object, axially outstanding region is the region of annular.Can guarantee thus, Sealing keeps fixing along its ring week.
Also meet object, the protuberance of the annular of piston has hollow accommodating part, and described accommodation section axially extends, and wherein seal the protuberance that holding member has cylindricality, described protuberance joins in hollow accommodating part.The position that can realize sealing holding member is thus fixed.
Also meet object, sealing holding member screw by means of the protuberance of its cylindricality, clamp, bonding or be otherwise connected in the hollow accommodating part of piston form fit ground or material fit.Even if the position that also can realize the improvement sealing holding member thus when piston return movement is fixed.
In addition meet object, sealing holding member has the region of the dish type radially extended, and the region of described dish type makes to be connected with the protuberance of the cylindricality of inner radial in the axially outstanding region of radially outer.Simple structure can be realized thus because the protuberance of the inner radial axially outstanding region single type that can arrange with radially outer form.Advantageously, described component is by the ground injection moulding of plastics single type.
Especially advantageously, energy storage device is supported on sealing holding member on the side deviating from piston.This energy storage device is used as the preloading spring for pretension piston.Because sealing holding member is supported on piston, so this element also can be used in supporting energy storage device thus having two functions concurrently.
Also meet object, sealing holding member has axially outstanding lip on the side deviating from piston, and energy storage device radially direction is supported on described lip.By means of described lip, energy storage device preferably can be felt relieved on sealing holding member.
Accompanying drawing explanation
Next the present invention is elaborated according to preferred embodiment in conjunction with corresponding accompanying drawing.At this illustrate:
Fig. 1 illustrates the schematic diagram according to the seal element in the seal arrangement of prior art,
Fig. 2 illustrates the schematic diagram according to the seal element in seal arrangement of the present invention, and
Fig. 3 illustrates the view of piston-cylinder units.
Embodiment
Fig. 1 illustrates the seal arrangement 1 of the piston-cylinder units being particularly useful for motor vehicle, wherein seal element 2 is arranged on the protuberance 3 of the piston of piston-cylinder units, and wherein static sealing lip 4 to be supported on protuberance 3 and motion seal lip 5 abuts in the wall portion 6 of cylinder slidably in inner radial.Sealing is remained on protuberance 3 by holding member 7.
As seen in Figure 1, when there is negative pressure in region 8, motion seal lip 5 lifts from the wall portion 6 of cylinder and produces blow-by.
Fig. 2 illustrates the seal arrangement 10 with seal element 11, and described seal element is arranged on the protuberance 12 of the piston of piston-cylinder units 13.Seal element 11 is supported on the protuberance 12 of piston 15 by means of the sealing lip 14 of its static state in inner radial, and wherein the motion seal lip 16 of seal element is supported on the wall 17 of cylinder 18 at radially outer.Due to the sealing holding member 19 with the region 20 axially extended can prevent motion seal lip 16 from region 21, there is negative pressure condition under also lift from the wall portion 17 of cylinder, wherein said region 20 is substantially opposite with motion seal lip 16 at the static sealing lip 14 of radially outer overlap joint.Even if according to the device of Fig. 2 thus in extreme runnability, such as in pressure chamber, there is negative pressure time avoid blow-by, described negative pressure such as can produce when piston relatively quickly returns.
In addition be provided with seal carrier 9,22 in fig. 1 and 2, described seal carrier carries seal element and is arranged on equally on the protuberance of piston.In region 8 or 21, there is negative pressure condition lower seal element 2,11 be sucked and lift from seal carrier 9,22.However sealing lip is avoided to lift from the opposite region that reclines according to the present invention by sealing holding member 19.
Fig. 3 illustrates an embodiment of the seal arrangement 50 of the piston-cylinder apparatus 51 with piston 52, and described piston is arranged on the inside of cylinder 53 in the axial direction displaceably.Piston 52 has protuberance 54, and described protuberance forms the wall portion 55 of L shape, and the seal element 57 with seal carrier 58 is arranged between the wall portion 56 of protuberance 54 and cylinder 53.
Seal element 57 substantially L shape ground or V-arrangement ground form, have inner radial arrange static state sealing lip 59 and substantially radially direction or also favour radial direction extension motion seal lip 60.Static sealing lip 59 is in the casing wall portion that inner radial abuts on protuberance 54 or the radially direction of protuberance extends, and motion seal lip 60 abuts on the inner wall part 56 of cylinder 53 at radially outer.
Protuberance 54 has hollow accommodating part 61, and described accommodation section is used for sealing holding member 62 to be contained in hollow accommodating part 61 with the protuberance 63 of cylindricality, to make sealing holding member 62 be connected with piston.Sealing holding member also has the region 64 of the annular arranged at radially outer except the protuberance 63 of the cylindricality axially extended, described region is axially given prominence to, and the region 64 of wherein said annular is given prominence to towards the direction of Sealing or seal element 57.At this, axially outstanding region 64 is adjacent with motion seal lip 60 at the static sealing lip 59 of radially outer overlap joint.The protuberance 63 arranged in inner radial and the region 65 being provided with the dish type that radially direction extends between the axially outstanding region 64 that inner radial is arranged, the annular that the protuberance 63 that the region of described dish type makes inner radial arrange is arranged with radially outer and the region 64 of axially giving prominence to be connected.Have the connection between the piston 52 of its hollow accommodating part 61 and sealing holding member 62 advantageous by screw, clamp or otherwise by form fit or the connection of material fit realize.
In addition can find out, energy storage device 66 is supported on sealing holding member 62.Seal holding member 62 for this reason and there is at radially outer the lip 67 axially given prominence in the direction towards energy storage device 66, described lip radially for making the last coil 68 of energy storage device 66 is fixed and supports in direction, energy storage device 66 is arranged regularly by means of sealing holding member 62 position, and can axially its spring force be applied on sealing holding member 62.
Reference numerals list
1 seal arrangement
2 seal elements
3 protuberances
The sealing lip of 4 static state
5 motion seal lips
6 wall portion
7 holding members
8 regions
9 seal carrier
10 seal arrangements
11 seal elements
12 protuberances
13 piston-cylinder units
The sealing lip of 14 static state
15 pistons
16 motion seal lips
17 wall portion
18 cylinders
19 sealing holding members
20 regions
21 regions
22 seal carrier
50 seal arrangements
51 piston-cylinder apparatuses
52 pistons
53 cylinders
54 protuberances
55 wall portion
56 wall portion, inner wall part
57 seal elements
58 seal carrier
The sealing lip of 59 static state
60 motion seal lips
61 accommodating parts
62 sealing holding members
63 protuberances
The region of 64 annulars
The region of 65 dish types
66 energy storage devices
67 lips
68 coils

Claims (9)

1. the seal arrangement for piston-cylinder units (51) (50), described piston-cylinder units has cylinder (53) and the piston (52) of energy axial motion in described cylinder, described seal arrangement has the protuberance (54) of the annular for holding seal element (57), described seal element (57) be substantially L shape or v shape and there is the sealing lip (59) of the motion seal lip (60) that radially direction extends and the static state axially extended, it is characterized in that, be provided with sealing holding member (62), the position that described sealing holding member is used for described seal element (57) is fixed.
2. seal arrangement according to claim 1, it is characterized in that, described sealing holding member (62) has axially outstanding region (64), and described region overlaps the sealing lip (59) of described static state and adjacent with described motion seal lip (60) at least in part at radially outer.
3. seal arrangement according to claim 2, is characterized in that, axially outstanding described region (64) is the region of annular.
4. the seal arrangement according to claim 1,2 or 3, it is characterized in that, the protuberance of the described annular of described piston (52) has hollow accommodating part (61), described accommodation section axially extends, wherein said sealing holding member (62) has the protuberance (63) of cylindricality, and the protuberance of described cylindricality joins in hollow described accommodation section.
5. seal arrangement according to claim 4, it is characterized in that, described sealing holding member (62) is screwed by the protuberance (63) of its cylindricality, clamp, bonding or in another manner form fit ground or material fit be connected in the hollow described accommodation section (61) of described piston (52).
6. the seal arrangement according to claim 4 or 5, it is characterized in that, described sealing holding member (62) has the region (65) of the dish type that radially direction extends, and the region of described dish type makes the axially outstanding region (64) of radially outer be connected with the protuberance (63) of the cylindricality of inner radial.
7. the seal arrangement according to any one of the claims, is characterized in that, energy storage device is supported on described sealing holding member on the side deviating from described piston.
8. seal arrangement according to claim 7, it is characterized in that, sealing holding member (62) has lip (67) outstanding in the axial direction on the side deviating from described piston (52), and described energy storage device (66) radially direction is supported on described lip.
9. the seal arrangement according to any one of the claims, it is characterized in that, sealing holding member (62) has axially outstanding lip (67) on the side deviating from described piston (52), and described energy storage device (66) radially direction is supported on described lip.
CN201380047290.9A 2012-09-19 2013-08-19 Sealing device Active CN104685270B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012216699 2012-09-19
DE102012216699.8 2012-09-19
PCT/DE2013/200131 WO2014044266A1 (en) 2012-09-19 2013-08-19 Seal arrangement

Publications (2)

Publication Number Publication Date
CN104685270A true CN104685270A (en) 2015-06-03
CN104685270B CN104685270B (en) 2017-03-08

Family

ID=49225996

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380047290.9A Active CN104685270B (en) 2012-09-19 2013-08-19 Sealing device

Country Status (4)

Country Link
CN (1) CN104685270B (en)
DE (2) DE112013004558A5 (en)
IN (1) IN2015DN01498A (en)
WO (1) WO2014044266A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107750309A (en) * 2015-07-15 2018-03-02 舍弗勒技术股份两合公司 Sealing device for piston cylinder assembly
CN112334212A (en) * 2018-06-12 2021-02-05 克诺尔商用车制动系统有限公司 Sealing interface for an air dryer cartridge and base for an air dryer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104214254B (en) * 2014-08-28 2017-05-03 中车眉山车辆有限公司 Brake cylinder piston assembly for railway vehicle
KR20230027259A (en) * 2020-08-07 2023-02-27 콘티넨탈 오토모티브 테크놀로지스 게엠베하 Elastomer sealing rings for improved sealing systems in electrically actuable automotive disc brakes

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Publication number Priority date Publication date Assignee Title
US4198922A (en) * 1978-10-10 1980-04-22 United States Steel Corporation Gas barrier coating control apparatus with a readily replaceable gas orifice header segment
US20020124562A1 (en) * 2000-08-14 2002-09-12 Bosch Braking Systems Co, Ltd. Master cylinder
WO2003044385A1 (en) * 2001-11-23 2003-05-30 Automotive Products France S.A. Actuator
CN102425542A (en) * 2010-08-19 2012-04-25 罗伯特·博世有限公司 Piston pump, producing method thereof, guiding element thereof, and vehicle brake sysetm

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01161166U (en) * 1988-04-30 1989-11-09

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198922A (en) * 1978-10-10 1980-04-22 United States Steel Corporation Gas barrier coating control apparatus with a readily replaceable gas orifice header segment
US20020124562A1 (en) * 2000-08-14 2002-09-12 Bosch Braking Systems Co, Ltd. Master cylinder
WO2003044385A1 (en) * 2001-11-23 2003-05-30 Automotive Products France S.A. Actuator
CN102425542A (en) * 2010-08-19 2012-04-25 罗伯特·博世有限公司 Piston pump, producing method thereof, guiding element thereof, and vehicle brake sysetm

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107750309A (en) * 2015-07-15 2018-03-02 舍弗勒技术股份两合公司 Sealing device for piston cylinder assembly
CN107750309B (en) * 2015-07-15 2020-02-14 舍弗勒技术股份两合公司 Sealing device for piston cylinder assembly
CN112334212A (en) * 2018-06-12 2021-02-05 克诺尔商用车制动系统有限公司 Sealing interface for an air dryer cartridge and base for an air dryer
US11788623B2 (en) 2018-06-12 2023-10-17 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Sealing interface for an air dryer cartridge and a base for an air dryer cartridge

Also Published As

Publication number Publication date
WO2014044266A1 (en) 2014-03-27
DE102013216396A1 (en) 2014-03-20
DE112013004558A5 (en) 2015-06-03
CN104685270B (en) 2017-03-08
IN2015DN01498A (en) 2015-07-03

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