WO2015161846A1 - Aktorvorrichtung für eine hydraulische betätigungsvorrichtung und entsprechende hydraulische betätigungsvorrichtung - Google Patents
Aktorvorrichtung für eine hydraulische betätigungsvorrichtung und entsprechende hydraulische betätigungsvorrichtung Download PDFInfo
- Publication number
- WO2015161846A1 WO2015161846A1 PCT/DE2015/200208 DE2015200208W WO2015161846A1 WO 2015161846 A1 WO2015161846 A1 WO 2015161846A1 DE 2015200208 W DE2015200208 W DE 2015200208W WO 2015161846 A1 WO2015161846 A1 WO 2015161846A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- spindle
- actuator device
- piston
- cylinder bore
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
- 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
-
- 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
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
- F15B15/1419—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston of non-circular cross-section
-
- 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
- F15B2015/1495—Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston
-
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms
-
- 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
- F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
-
- 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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
Definitions
- Actuator device for a hydraulic actuator and corresponding hydraulic actuator for a hydraulic actuator and corresponding hydraulic actuator
- the invention relates to an actuator device for a hydraulic actuator for actuating a vehicle component, comprising a cylinder bore having a hydraulic cylinder, a linearly movable in the cylinder bore along a longitudinal axis of this cylinder bore arranged hydraulic piston, an electromotive spindle drive with a spindle for linear movement of the hydraulic piston and a support arrangement for Supporting a occurring during operation of the spindle drive support torque.
- the invention further relates to a hydraulic actuating device for actuating a vehicle component, in particular a brake or a friction clutch, with at least one actuator device.
- the actuator device comprises: a hydraulic cylinder having a cylinder bore, a hydraulic piston arranged to be linearly displaceable in the hydraulic cylinder along a longitudinal axis of the cylinder bore and an electromotive spindle drive having a spindle for linear movement of the hydraulic piston. Furthermore, the actuator device securely on a support arrangement for supporting a occurring during operation of the spindle drive support torque. This support is usually via a positive connection of a threaded housing or the spindle (depending on which this component is driven by the electric motor) with respect to a
- Actuator housing or the hydraulic cylinder For this purpose, for example, there is at least one radial extension on the threaded housing or the spindle and at least one corresponding groove in the actuator housing or the hydraulic cylinder.
- This groove must extend over the entire operating length of the actuator device, as over the entire path torque must be supported from.
- This positive connection via this at least one groove can not be integrated into the hydraulic piston, since the groove is a contradiction to the piston seal.
- a stroke length space for positive engagement is required. It is the object of the invention to provide an actuator device and a corresponding actuating device, which allows an alternative way of supporting a occurring during operation of the spindle drive support torque.
- the support arrangement via the positive connection of the piston takes place in the cylinder bore, wherein the cross section of the hydraulic piston has a different from the circular shape about the longitudinal axis of the (threaded) spindle contour.
- the cross section of the hydraulic piston has a different from the circular shape about the longitudinal axis of the (threaded) spindle contour.
- both the cross section of the hydraulic piston and the cross section of the cylinder bore have a contour deviating from the circular shape about the longitudinal axis of the spindle.
- Such an actuator device with a hydraulic cylinder is also called a hydrostatic actuator device.
- the actuating device according to the invention now has the advantage that space in the vicinity of the spindle drive is free, since a support arrangement can be omitted at this point.
- cylinder bore describes an internal space of the hydraulic cylinder in which the hydraulic piston is moved, without linking this interior space with the manner of its manufacture, in other words, such a cylinder bore does not necessarily have to be created by drilling.
- the cross section of the piston (and preferably also the cross section of the cylinder bore) has an oval contour.
- Such a contour makes it possible to realize the support arrangement on the positive connection between the hydraulic piston and the cylinder bore with sufficient sealing of these components against each other.
- a corresponding sealing ring as a piston seal has a corresponding oval basic shape.
- the cross section of the piston (and preferably also the cross section of the cylinder bore) has a circular contour, the center of which, however, is arranged at a distance from the longitudinal axis of the spindle.
- the actuator device has at least one further hydraulic cylinder, each having a cylinder bore running parallel to the cylinder bore, in which along the longitudinal axis of each further hydraulic piston is arranged linearly movable, all hydraulic pistons via a spindle of the spindle drive simultaneously linearly movable or can be driven.
- the longitudinal axis of at least one of the hydraulic cylinders does not coincide with the longitudinal axis of the spindle.
- a fork-like intermediate element is interposed between this spindle and the individual hydraulic pistons.
- the electromotive spindle drive further comprises an electric drive machine and a threaded housing.
- the actuator device further comprises an actuator housing, which at least partially einhaust the spindle drive and is connected to the at least one hydraulic cylinder.
- Hydraulic cylinder is connected to a hydraulic line of the hydraulic actuator or is connected.
- a piston seal for sealing against the tread formed by the corresponding cylinder bore and / or
- the actuator device or at least one of the actuator devices is designed as an aforementioned actuator device.
- FIG. 1 shows a schematic representation of a longitudinal section through an actuator device according to a first embodiment of the invention
- FIG. 2 shows a sectional view along the sectional plane A - A through the actuator device shown in FIG. 1, FIG.
- FIG. 3 shows a longitudinal section through an actuator device according to a second embodiment of the invention.
- FIG. 4 shows a sectional view along the sectional plane B-B through the actuator device shown in FIG. 3.
- the actuator device 10 has a hydraulic cylinder 1 with a cylinder bore 14. Along the longitudinal axis 16 of this cylinder bore 14, a hydraulic piston 18 of the hydraulic cylinder 12 is arranged to be linearly movable. Furthermore, the actuator device 10 has an electromotive spindle drive 20 with a spindle 22. The hydraulic piston 18 is driven via the spindle 22 of the spindle drive 20 for the linear process in the cylinder bore 14. The longitudinal axis 24 of the spindle 22 is simultaneously the longitudinal axis of the entire spindle drive 20.
- the drive machine 26, the threaded housing 28 and a part of the spindle 22 are enclosed by an actuator housing 30 of the actuator device 10, which is connected to the hydraulic cylinder 12.
- the hydraulic piston 18 of the hydraulic cylinder 12 further has a piston seal 32 for sealing the piston 18 relative to the running surface of the hydraulic cylinder 12 formed by the cylinder bore 14 and a sliding ring 34 spaced axially from the seal 32.
- the piston seal 32 is usually designed as a sealing ring.
- the hydraulic cylinder 12 and the spindle drive 20 are arranged in alignment so that the longitudinal axis 16 of the cylinder bore 14 and the longitudinal axis 24 of the spindle 22 coincide.
- the spindle 22 thus acts centrally on the hydraulic piston 18 of the hydraulic cylinder.
- FIG. 2 shows the actuator device 10 shown in FIG. 1 in a sectional view along the sectional plane A - A shown in FIG. 1 by the hydraulic piston 18 located in the hydraulic cylinder 12.
- Both the cross section 40 of the hydraulic piston 18 and the corresponding cross section 42 Cylinder bore 14 has a shape deviating from the circular shape about the longitudinal axis 16 of the spindle 22 contour.
- both the cross section 40 of the hydraulic piston 18 and the corresponding cross section 42 of the cylinder bore 14, in which the piston 18 runs an oval contour.
- a positive connection of the hydraulic piston 18 in the cylinder bore 14 results. This positive engagement is used as a support (arrows 46) of the support torque occurring during operation of the spindle drive 20 and is therefore a corresponding support arrangement for the spindle drive 20th
- FIGS. 3 and 4 show a schematic illustration of an alternative embodiment of the actuator device 10. This embodiment substantially corresponds to the actuator device illustrated in FIGS. 1 and 2, so that only the differences are to be discussed here.
- the actuator device 10 illustrated in FIGS. 3 and 4 has, in addition to the hydraulic cylinder 12, a further hydraulic cylinder 48, which is arranged parallel to the one hydraulic cylinder 12.
- the further hydraulic cylinder 48 has a to the cylinder bore 14 of a hydraulic cylinder 12 extending cylinder bore 50 having a longitudinal axis 52.
- another hydraulic piston 54 is arranged linearly movable, which is also driven by the spindle drive 20 with a spindle 22.
- the further hydraulic cylinder 48 has a hydraulic chamber (working space) 56, which is also connected via a connection to the hydraulic line 38.
- the two hydraulic cylinders 18, 54 are arranged symmetrically about the longitudinal axis of the spindle 22 and have pistons 18, 54, whose cross-sections 40 are equal. All (two) hydraulic pistons 18, 54 are thus simultaneously driven linearly movable by means of a spindle 22 of the spindle drive 20.
- a fork-shaped intermediate element 58 is interposed between the spindle 22 and the hydraulic piston 18, 54 of the two hydraulic cylinders 12, 48.
- FIG. 4 shows the actuator device 10 shown in FIG. 3 in a sectional view along the sectional plane B - B indicated in FIG. 1 by the hydraulic pistons 18, 54 located in the hydraulic cylinders 12, 48.
- Each of these two pistons 18, 54 has a with respect to the respective longitudinal axis 16, 52 of the corresponding cylinder bore 14, 50 circular contour 40.
- each of the cylinder bores 14, 50 has a relative to the respective longitudinal axis 16, 52 of the corresponding cylinder bore 14, 50 circular contour 40.
- the longitudinal axis of the cylinder bore 14, 50 with the longitudinal axis of the spindle 22 together.
- the cross section 40 of the hydraulic piston 18, 54 and the cross section 42 of the cylinder bore 14, 50 has a contour deviating from the circular shape about the longitudinal axis 16 of the spindle 22.
- the contour of the at least one piston 18, 54 and the contour of the at least one cylinder 12, 48 or the contour of the cylinder bore 14 deviating from a circular shape about the longitudinal axis 16 of the spindle 22 are now preferred there are two possibilities:
- Piston 18 and cylinder 12 are elliptical. This has the advantage that the contact surfaces have a curvature everywhere, which allows a particularly stable seal.
- An extension still consists in that an axially to the piston 18, 54 upstream sliding surface (for example, as a sliding ring 34) is provided, which derives the supporting force of the sealing surface of the seal 32.
- the seal 32 is used for sealing, the sliding surface for supporting on the wall of the cylinder bore (running surface of the piston 18, 54).
- the actuator device 10 is an actuator device 10 for converting the rotational movement of the electric drive machine 26 into a linear movement of at least one hydraulic piston (lifting piston) 18, 54 in order to generate a volume flow.
- the embodiments of this actuator device 10 are characterized by the following features:
- Single hydraulic cylinder 12 with preferably symmetrical cross-section.
- the sliding ring 34 is stiffer in the radial direction than the piston seal 32.
- the sliding ring 34 is preferably arranged in the hydraulic chamber 36.
- Reference numeral list actuator device
- Hydraulic piston (further cylinder)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015001927.8T DE112015001927A5 (de) | 2014-04-24 | 2015-03-27 | Aktorvorrichtung für eine hydraulische Betätigungsvorrichtung und entsprechende hydraulische Betätigungsvorrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014207740.0 | 2014-04-24 | ||
DE102014207740 | 2014-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015161846A1 true WO2015161846A1 (de) | 2015-10-29 |
Family
ID=53005445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2015/200208 WO2015161846A1 (de) | 2014-04-24 | 2015-03-27 | Aktorvorrichtung für eine hydraulische betätigungsvorrichtung und entsprechende hydraulische betätigungsvorrichtung |
Country Status (2)
Country | Link |
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DE (1) | DE112015001927A5 (de) |
WO (1) | WO2015161846A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5216942A (en) * | 1992-03-06 | 1993-06-08 | Sendoykas Jack J | Piston lock for power cylinders |
JPH10141317A (ja) * | 1996-11-12 | 1998-05-26 | Smc Corp | アクチュエータ |
DE10313739A1 (de) * | 2002-04-06 | 2003-10-16 | Luk Lamellen & Kupplungsbau | Kupplungsbetätigungen |
DE102010047800A1 (de) | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostatischer Kupplungsaktor |
DE102011105501A1 (de) * | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostataktor |
-
2015
- 2015-03-27 WO PCT/DE2015/200208 patent/WO2015161846A1/de active Application Filing
- 2015-03-27 DE DE112015001927.8T patent/DE112015001927A5/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5216942A (en) * | 1992-03-06 | 1993-06-08 | Sendoykas Jack J | Piston lock for power cylinders |
JPH10141317A (ja) * | 1996-11-12 | 1998-05-26 | Smc Corp | アクチュエータ |
DE10313739A1 (de) * | 2002-04-06 | 2003-10-16 | Luk Lamellen & Kupplungsbau | Kupplungsbetätigungen |
DE102010047800A1 (de) | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostatischer Kupplungsaktor |
DE102011105501A1 (de) * | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostataktor |
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DE112015001927A5 (de) | 2017-01-05 |
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