CN102971547B - Hydrostatic actuator - Google Patents
Hydrostatic actuator Download PDFInfo
- Publication number
- CN102971547B CN102971547B CN201180032889.6A CN201180032889A CN102971547B CN 102971547 B CN102971547 B CN 102971547B CN 201180032889 A CN201180032889 A CN 201180032889A CN 102971547 B CN102971547 B CN 102971547B
- Authority
- CN
- China
- Prior art keywords
- active cylinder
- hydrostatic actuator
- housing
- piston
- hydrostatic
- 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.)
- Expired - Fee Related
Links
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D29/00—Clutches and systems of clutches involving both fluid and magnetic actuation
- F16D29/005—Clutches and systems of clutches involving both fluid and magnetic actuation with a fluid pressure piston driven by an electric motor
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/38—Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/32—Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
Abstract
The present invention relates to a kind of hydrostatic actuator (1,1a), especially use in the car, this hydrostatic actuator comprises driver element (5), this driver element there is motor (6) and the planetary roller transmission device (7) that driven by motor (6) rotor and driven by planetary roller transmission device (7), the hydrostatic active cylinder unit (8,8a) that arranges around planetary roller transmission device (7).In order to raise the efficiency and reduce manufacture cost, described active cylinder unit is distributed in circumferentially by multiple spin axis about rotor and the active cylinder (10,10a, 10b) be connected with planetary roller transmission device is respectively formed.
Description
Technical field
The present invention relates to a kind of hydrostatic actuator, especially use in the car, comprise a driver element, this driver element there is motor and the planetary roller transmission device that driven by motor rotor and by planetary roller actuator drives, around planetary roller transmission arrangements, hydrostatic active cylinder unit.
Background technique
At not pre-disclosed German patent application Nr.102009051245.4, in 102010009297.5 and 102010014673.0, disclose this hydrostatic actuator.At this, driver element is provided with motor, and motor rotor is connected with planetary roller transmission device.Be provided with the active cylinder unit with active cylinder around planetary roller transmission device, its annular piston is axially displaced by planetary drive transmission.Because annular piston diameter is large, for causing high friction torque, high wearing and tearing and dead mileage loss relative to the seal arrangement of housing seal annular piston.In addition, the seal arrangement cost intensive used.This hydrostatic actuator must unit final inspection and need bothersome reprocessing when there is defect here as a whole.
Summary of the invention
Therefore, task of the present invention advantageously improves hydrostatic actuator, especially in more high efficiency, cut down finished cost and improve in inspectability.
This task is especially solved by hydrostatic actuator in the car by a kind of, this hydrostatic actuator comprises a driver element, this driver element there is motor and the planetary roller transmission device that driven by motor rotor and by planetary roller actuator drives, around planetary roller transmission arrangements, hydrostatic active cylinder unit, wherein, described active cylinder unit by multiple spin axis relative to rotor circumferentially distribute, the active cylinder that is connected with planetary roller transmission device respectively formed.
Described hydrostatic actuator can be used for all purposes, especially uses in the car, in such applications, wishes that parts are axially displaced relative to the enough parts of static housing.Such as, can to load by the slave cylinder (such as the slave cylinder of friction clutch, break or similar means) that pressure piping is connected with the effect of active cylinder unit away from hydrostatic actuator away from this by this hydrostatic actuator.At this, such as when for friction clutch, under the pressure that slave cylinder produces at the active cylinder unit by drived unit corresponding operating, the butterfly spring of friction clutch, lever element or arm spring are loaded, and be positive opening formula or or forced closed formula and to open it or closed according to friction clutch.
In order to improve its motion and installing space, in this hydrostatic actuator, motor, planetary roller transmission device and active cylinder unit is coaxially arranged, wherein, multiple, preferably three arrange around planetary roller transmission device in the active cylinder circumferentially distributed.At this, planetary roller transmission device converts the rotary motion of motor to axial motion, and this axial motion is delivered on the piston of active cylinder by driving plate.At this, these active cylinder are configured to can be separate and independent of the unit of driver element inspection, have active cylinder housing and can be axially displaced relative to this active cylinder housing piston, and to be accommodated in the housing of hydrostatic actuator.By forming active cylinder housing separately, active cylinder can be made to be configured to itself can the unit of practical function, and they especially can be checked by for sealing and particular/special requirement.The primary clustering of hydrostatic actuator can be checked in this way before assembling, can reduce thus to may defective hydrostatic actuator reprocessing or reduce its ratio of defects.
Because sealed pathway is shorter, friction can be reduced in degree ground like this, make such as when circumferentially three active cylinder, under the steering force predetermined by driver element, can reduce required piston cross-section area and reduce the volume of the pressure chamber between active cylinder housing and piston, so that the diameter of this hydrostatic actuator is identical or even can be less compared with the hydrostatic actuator with annular piston.Especially in a circumferential direction observe intermediate space can be set between active cylinder, can settle wherein the anti-rotation lock of building blocks of function such as between sensor element (as the displacement for detecting the axial displacement of active cylinder unit and/or pressure transducer), hydrostatic actuator housing member, one or more such as can be communicated with the pressure medium volume of at least one active cylinder when piston is in zero-bit stock volume and/or similarity piece.The wide radial installing space for these functional element can be avoided in this way.
These active cylinder have a compression fittings respectively, and the pressure medium volume formed by active cylinder housing and piston is connected with pressure piping in the inside of the housing of hydrostatic actuator or outside by this compression fittings.Pressure piping is connected with slave cylinder on an opposite end.
This pressure medium volume as pressure chamber by active cylinder housing and can be axially displaced in this housing piston formed.At this, carry out the seal arrangement that seals between which and to seal on piston and with the inwall formative dynamics of active cylinder housing as grooved ring seal arrangement is preferably received in and contact.In order to protect primary seal device from dry operation and make active cylinder to external sealed, can by secondary seal at least one active cylinder between piston and active cylinder housing to external sealed.Stress-free intermediate space between secondary seal and primary seal device can fill with pressure medium at least in part, makes primary seal device to do operation.Advantageously verified at this, between primary seal device and secondary seal, be provided with the automatic leakage discharge hole towards reservoir.At this, when piston is shifted, exchange pressure medium according to the volume changed and reservoir.If piston crosses the motion of automatic leakage discharge hole in the zero-bit of removal pressure with its primary seal device, then can also by the pressure medium volume of reservoir compensatory pressure room, wherein, can balance pressure difference and if desired suction or the air clamp-oned being discharged to reservoir.
Except seal arrangement that is little and thus low cost and the piston that can simply make are saved except cost, cost can also be saved further, its mode is, when hydrostatic actuator be in operation, such as arrange in the car time, preferably arrange the highest active cylinder is provided with automatic leakage discharge hole on the topology.By making on the pressure side being interconnected of active cylinder, active cylinder exchanges the air of pressure difference and gathering, and therefore these air accumulations also can discharge in a straightforward manner to reservoir on the peak of hydrostatic actuator in this active cylinder.When only an active cylinder is configured with the connection with reservoir, the active cylinder housing of this corresponding active cylinder can be configured with an only primary seal device doing operation in side, or be provided with secondary seal, it allows the intermediate space between primary seal device and secondary seal to be partly filled with pressure medium or oiling agent, make primary seal device can wet run or lubricated, wherein, can compensated with air be realized when piston operates during volume-variation, such as, aspirated again by secondary seal, housing bore or similar structure and squeeze.
Accompanying drawing explanation
The present invention is explained in detail by the embodiment shown in attached Fig. 1 and 2.Accompanying drawing illustrates:
Fig. 1 has the section of the hydrostatic actuator of active cylinder unit, and this active cylinder unit has multiple active cylinder be distributed in circumferentially,
The section of the hydrostatic actuator that Fig. 2 changes slightly relative to the hydrostatic actuator of Fig. 1.
Embodiment
Fig. 1 illustrates hydrostatic actuator 1 with sectional drawing, and have the housing 2 of multi-hull type, this housing has housing member 3,4.For the theory structure of hydrostatic actuator 1 and function with reference to above-mentioned prior art.Housing member 4 holds driver element 5 and active cylinder unit 8, the planetary roller transmission device 7 that this driver element has motor 6 and driven by motor rotor.Housing member 3 is used as the closing cap of housing member 4.
Planetary roller transmission device 7 converts the rotary motion of rotor to axial motion and axially loads active cylinder unit 8.On planet roller transmission device 7, be provided with driving plate 9 for this reason.
The active cylinder 10 that active cylinder unit 8 is preferably evenly distributed on circumferentially by some is formed, and these active cylinder 10 have the piston 12 that an active cylinder housing 11 and can be axially displaced respectively wherein.These active cylinder are configured to independently element of construction and position and are accommodated in regularly in the housing member 4 of housing.Independently unit is configured to by active cylinder, active cylinder can be checked in the disassembled condition and the pressure of active cylinder 10 inside is neutralized, install when making them can not add on-load pressure to housing 2, the spreading power worked in housing 2 accordingly can be avoided thus.
By active cylinder housing 11 and piston 12 mineralization pressure medium volume 13 respectively, this pressure medium volume is accommodated in primary seal device 14(on piston 12 as grooved ring seal arrangement by axial restraint) sealing.The pressure export 15 of these pressure medium volumes 13 is merged in compression fittings 16 respectively in a not shown manner, this compression fittings is connected with pressure piping, wherein, the press-in connection of the remote slave cylinder of setting, the clutch slave cylinder of such as friction clutch is established to by pressure piping.Make frictional force little due to the circumferential size little generally of primary seal device 14, the area of piston 12 can be made and make the radial dimension of hydrostatic actuator 1 keep little thus.Such as, three be distributed in circumferentially, have and be less than 150mm respectively
2the active cylinder of piston area be just enough to the friction clutch of operating routine, such as 135mm
2corresponding to about 13mm diameter.Because this size is little, the no-load volume of pressure medium volume can be minimum, this no-load volume such as in order to make piston 12 from zero-bit automatic leakage discharge hole 19 effectively situation next be directly displaced to and set up effective pressure and required.
Active cylinder 10 also has secondary seal 17 as annular groove seal arrangement, and they make active cylinder housing 11 towards piston 12 pairs of external sealeds.Supplementary volume 18 between primary seal device 14 and secondary seal 17 has automatic leakage discharge hole 19 respectively, and they are connected with unshowned pressure medium reservoir.By at primary seal device both sides applied pressure medium, primary seal device is always wet to be run and therefore can run with minimum wearing and tearing.
Fig. 1 illustrates the hydrostatic actuator be under load, that is, when motor 6 is energized driving plate 9 axially displaced and thus piston 12 be axially loaded, under pressure medium volume 13 is in pressure.If cancel the energising of motor 6 or sense of rotation is reverse, then piston 12 is unloaded and return to automatic leakage discharge hole direction.If now primary seal device 14 crosses automatic leakage discharge hole 19, then between pressure medium volume 13 and reservoir, implement pressure balance by automatic leakage discharge hole 19.Automatic leakage discharge hole 19 can be assembled in housing 2 inside or outside and be connected with the reservoir arranged at a distance by unique compensation pipeline.Alternatively or cumulatively, can be provided with in one or more intermediate space be arranged in a circumferential direction preferably between three active cylinder 10 in a not shown manner and stock volume for pressure medium.In addition, additionally can in these between be provided with for housing member 3 in space, the anti-rotation lock of 4 or only the displacement transducer element 20 shown in local, it is arranged on the radially outer of active cylinder 10 here.
Fig. 2 illustrates the hydrostatic actuator 1a slightly changed compared with the embodiment of the hydrostatic actuator 1 of Fig. 1, wherein, for detecting active cylinder 10a, the displacement transducer element of the axial displacement of the piston 12a of 10b is arranged in the intermediate space between two adjacent in the circumferential active cylinder 10b in a not shown manner.Therefore especially can save radial installing space and reduce the diameter of housing 2a.
In order to save manufacture cost, in the illustrated embodiment of hydrostatic actuator 1a, construct active cylinder unit 8a like this, make the active cylinder 10a being only arranged on extreme higher position on the topology be provided with secondary seal 17a, automatic leakage discharge hole 19a and supplementary volume 18a.At this, this active cylinder 10a bears and reservoir or the pressure balance of stocking volume.At this, remaining active cylinder 10b is interconnected by pressure export 15a, and thus, the pressure balance of active cylinder 10a is also effective for active cylinder 10b.
Reference numerals list
1 hydrostatic actuator
1a hydrostatic actuator
2 housings
2a housing
3 housing members
4 housing members
5 driver elements
6 motor
7 planetary roller transmission devices
8 active cylinder unit
8a active cylinder unit
9 driving plates
10 active cylinder
10a active cylinder
11 active cylinder housings
12 pistons
12a piston
13 pressure medium volumes
14 primary seal devices
15 pressure exports
15a pressure export
16 compression fittingss
17 secondary seal
17a primary seal device
18 supplement volume
18a supplements volume
19 automatic leakage discharge holes
19a automatic leakage discharge hole
20 displacement transducer elements
Claims (8)
1. hydrostatic actuator (1, 1a), with in the car, this hydrostatic actuator comprises driver element (5), this driver element has motor (6) and the planetary roller transmission device (7) that driven by this motor (6) rotor and to be driven by planetary roller transmission device (7), around the hydrostatic active cylinder unit (8 that planetary roller transmission device (7) is arranged, 8a), wherein, described active cylinder unit (8, 8a) to be distributed in circumferentially by multiple spin axis relative to rotor and the active cylinder (10 be connected with planetary roller transmission device (7) respectively, 10a, 10b) form, described active cylinder (10,10a, 10b) being configured to can separate and unit that is that check independent of driver element (5), the piston (12 that there is active cylinder housing (11) and can move axially relative to this housing, 12a) and be positioningly accommodated in hydrostatic actuator (1, in housing (2,2a) 1a).
2. hydrostatic actuator (1 as claimed in claim 1,1a), it is characterized in that, these active cylinder (10,10a, the pressure medium volume (13) surrounded between piston (12,12a) and active cylinder housing (11) 10b) is interconnected and leads to in one of slave cylinder public pressure piping.
3. hydrostatic actuator (1 as claimed in claim 1 or 2,1a), it is characterized in that, at piston (12,12a) upper reception one seals described piston (12, the primary seal device (14) of active cylinder (10,10a, 10b) the pressure medium volume (13) 12a) and between described active cylinder housing (11).
4. hydrostatic actuator (1 as claimed in claim 3,1a), it is characterized in that, at least one active cylinder (10,10a) at the described piston (12 of sealing, 12a) and between active cylinder housing (11) by secondary seal (17,17a) to external sealed.
5. hydrostatic actuator (1 as claimed in claim 4,1a), it is characterized in that, in at least one active cylinder (10, at primary seal device (14) and secondary seal (17 10a), the automatic leakage discharge hole (19,19a) towards reservoir is provided with 17a).
6. hydrostatic actuator (1a) as claimed in claim 5, it is characterized in that, the highest active cylinder (10a) arranged at least on the topology that is in operation in the layout of hydrostatic actuator is provided with automatic leakage discharge hole (19a).
7. hydrostatic actuator (1 as claimed in claim 1 or 2,1a), it is characterized in that, in a circumferential direction two active cylinder (10,10a, this hydrostatic actuator (1 is set 10b), another building blocks of function 1a), another building blocks of function described is sensor element, hydrostatic actuator (1, anti-rotation lock and/or the pressure medium that can be communicated with at least one pressure medium volume of active cylinder of the housing (2,2a) of double-body bike structure 1a) stock volume.
8. hydrostatic actuator (1,1a) as claimed in claim 7, is characterized in that, described sensor element is displacement for detecting the axial displacement of active cylinder unit and/or pressure transducer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010025443.6 | 2010-06-29 | ||
| DE102010025443 | 2010-06-29 | ||
| PCT/DE2011/001370 WO2012000483A1 (en) | 2010-06-29 | 2011-06-24 | Hydrostatic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102971547A CN102971547A (en) | 2013-03-13 |
| CN102971547B true CN102971547B (en) | 2015-11-25 |
Family
ID=44653926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180032889.6A Expired - Fee Related CN102971547B (en) | 2010-06-29 | 2011-06-24 | Hydrostatic actuator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102971547B (en) |
| DE (2) | DE102011105501A1 (en) |
| WO (1) | WO2012000483A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201791A1 (en) | 2013-02-27 | 2014-08-28 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic fact actuator for automated operation of a friction clutch used in powertrain of motor car, changes rotating movement of rotor of electromotor corresponding to linear shift movement of piston and rotation speed of rotor |
| WO2015081948A1 (en) | 2013-12-05 | 2015-06-11 | Schaeffler Technologies AG & Co. KG | Method for venting an automated hydrostatic clutch actuating system |
| WO2015161846A1 (en) * | 2014-04-24 | 2015-10-29 | Schaeffler Technologies AG & Co. KG | Actuator device for a hydraulic actuating device and corresponding hydraulic actuating device |
| US9903950B2 (en) | 2014-08-27 | 2018-02-27 | Leica Geosystems Ag | Multi-camera laser scanner |
| DE102016204734A1 (en) | 2015-04-09 | 2016-10-13 | Schaeffler Technologies AG & Co. KG | Method for operating an actuator, in particular a Hydrostataktors for actuating an automated friction clutch |
| DE102015216371B4 (en) | 2015-08-27 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Plastic housing with an ultrasonic welded connection, in particular for a hydrostatic actuator and hydrostatic actuator with this |
| CN108351004A (en) * | 2015-11-13 | 2018-07-31 | 舍弗勒技术股份两合公司 | Actuator |
| CN105402273B (en) * | 2015-12-22 | 2017-09-12 | 武汉理工通宇新源动力有限公司 | A kind of motor driven liquid pressure clutch and automobile |
| DE102017109403B4 (en) * | 2017-05-03 | 2023-06-22 | Schaeffler Technologies AG & Co. KG | Method and device for determining the absolute position of a component of an actuator, in particular a clutch actuator, rotating about an axis of rotation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3388548A (en) * | 1966-08-02 | 1968-06-18 | Alman H. Vieths | Rotating and reciprocating tool arrangement |
| CN1129969A (en) * | 1994-06-20 | 1996-08-28 | Valeo公司 | Control device, particularly for motor vehicle clutch |
| US5667283A (en) * | 1996-04-15 | 1997-09-16 | General Motors Corporation | Variable screw-driven system |
| US6230492B1 (en) * | 1996-08-30 | 2001-05-15 | Kelsey-Hayes Company | Electrically actuated hydraulic power cylinder |
| DE10313739A1 (en) * | 2002-04-06 | 2003-10-16 | Luk Lamellen & Kupplungsbau | clutch controls |
| CN101153620A (en) * | 2006-09-29 | 2008-04-02 | 杜彦亭 | Power sliding table for gas and electricity compound transmission |
| DE102008038320A1 (en) * | 2007-11-27 | 2009-05-28 | Continental Teves Ag & Co. Ohg | Brake actuation unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4918921A (en) * | 1987-10-22 | 1990-04-24 | Automotive Products Plc | Coaxial push rod and hollow screw ball nut drive for master cylinder |
| DE102010047801A1 (en) | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostataktor |
| CN102575730B (en) | 2009-10-29 | 2015-08-26 | 舍弗勒技术股份两合公司 | Hydrostatic clutch actuator |
| JP5840676B2 (en) | 2010-04-12 | 2016-01-06 | シェフラー テクノロジーズ アー・ゲー ウント コー． カー・ゲーＳｃｈａｅｆｆｌｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ ＆ Ｃｏ． ＫＧ | Hydrostatic actuators and hydrostatic actuator assemblies in automobiles |
-
2011
- 2011-06-24 WO PCT/DE2011/001370 patent/WO2012000483A1/en active Application Filing
- 2011-06-24 DE DE102011105501A patent/DE102011105501A1/en not_active Withdrawn
- 2011-06-24 DE DE112011102711T patent/DE112011102711A5/en not_active Withdrawn
- 2011-06-24 CN CN201180032889.6A patent/CN102971547B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3388548A (en) * | 1966-08-02 | 1968-06-18 | Alman H. Vieths | Rotating and reciprocating tool arrangement |
| CN1129969A (en) * | 1994-06-20 | 1996-08-28 | Valeo公司 | Control device, particularly for motor vehicle clutch |
| US5667283A (en) * | 1996-04-15 | 1997-09-16 | General Motors Corporation | Variable screw-driven system |
| US6230492B1 (en) * | 1996-08-30 | 2001-05-15 | Kelsey-Hayes Company | Electrically actuated hydraulic power cylinder |
| DE10313739A1 (en) * | 2002-04-06 | 2003-10-16 | Luk Lamellen & Kupplungsbau | clutch controls |
| CN101153620A (en) * | 2006-09-29 | 2008-04-02 | 杜彦亭 | Power sliding table for gas and electricity compound transmission |
| DE102008038320A1 (en) * | 2007-11-27 | 2009-05-28 | Continental Teves Ag & Co. Ohg | Brake actuation unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102971547A (en) | 2013-03-13 |
| DE102011105501A1 (en) | 2011-12-29 |
| DE112011102711A5 (en) | 2013-05-29 |
| WO2012000483A1 (en) | 2012-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |