WO2016155716A1 - Aktoranordnung zur betätigung einer mechanischen einheit, vorzugsweise zur betätigung einer kupplung - Google Patents
Aktoranordnung zur betätigung einer mechanischen einheit, vorzugsweise zur betätigung einer kupplung Download PDFInfo
- Publication number
- WO2016155716A1 WO2016155716A1 PCT/DE2016/200118 DE2016200118W WO2016155716A1 WO 2016155716 A1 WO2016155716 A1 WO 2016155716A1 DE 2016200118 W DE2016200118 W DE 2016200118W WO 2016155716 A1 WO2016155716 A1 WO 2016155716A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric motor
- actuating
- mechanical unit
- actuator arrangement
- mechanical
- 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.)
- Ceased
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
- F16D28/00—Electrically-actuated clutches
-
- 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
- F16H—GEARING
- F16H33/00—Gearings based on repeated accumulation and delivery of energy
- F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
-
- 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
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/582—Flexible element, e.g. spring, other than the main force generating element
- F16D2125/585—Flexible element, e.g. spring, other than the main force generating element arranged in parallel with a force-applying member
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
- F16H2025/2078—Coaxial drive motors the rotor being integrated with the nut or screw body
Definitions
- Actuator arrangement for actuating a mechanical unit preferably for
- the invention relates to an actuator arrangement for actuating a mechanical unit, preferably for actuating a clutch, comprising an electric motor which is connected to a transmission which is designed to convert the rotational movement of the rotor of the electric motor into a translatory movement, and a mechanical energy store.
- Actuator arrangements are used in clutch actuation systems which have an electric motor serving for the drive and a rotary linear drive for converting the rotational movement of the electric motor into a linear movement for actuating the clutch.
- the linear actuator assembly includes a transmission system which is connected to the rotor of the electric motor. To operate the clutch force is required in principle only in one direction. Springs within the coupling system ensure a largely independent recovery of the system. The electric motor of the actuator must therefore be operated only in one direction, but in this direction apply a full operating torque.
- an energy storage device for motor support which has a mechanical energy storage, which is arranged in a transmission which converts the rotational movement of the electric motor in the linear movement.
- the energy store is a mechanical energy store in which mechanical energy is absorbed or released again by elastic deformation.
- the invention has for its object to provide a linear actuator assembly for actuating a mechanical unit, in which the design complexity is reduced and yet only a small operating torque must be applied by the electric motor.
- the object is achieved in that the mechanical energy storage is arranged parallel to the electric motor, wherein the energy storage a first part of a maximum operating torque for actuating the mechanical unit and the electric motor applies a second part of the maximum operating torque for actuating the same mechanical unit, wherein complete the two parts to the maximum operating torque.
- a particularly reliable interaction between the electric motor and the energy store is possible when the energy store applies the first approximately half the actuation torque and the electric motor applies the second approximately half the actuation torque for actuating the mechanical unit.
- the electric motor for carrying out a forward and / or a backward movement is formed, in which in each case the second approximately half maximum operating torque is transferable.
- the torque requirement of the electric motor shifts from previously 0 to M max by M max / 2
- the energy store is fully tensioned in the load-free state of the mechanical unit to be actuated.
- the no-load condition exists when the mechanical unit is not operated. Since the energy store and the electric motor access the same driven mechanical unit, the proposed solution can be easily realized mechanically. In this case, the energy storage stores in the no-load state, the energy that is needed to load, which at the beginning the operation of the mechanical unit requires only a small amount of force to operate through the energy storage.
- the rotor In order to tension the energy store, the rotor brings in the backward movement to the second approximately half maximum operating torque. As a result, the backward movement of the rotor is advantageously used to store energy in the energy store.
- the mechanical energy storage is axially downstream of the rotor of the electric motor, facing the mechanical unit, and mechanically connected to the rotor.
- the energy storage engine side is in front of the transmission, so this must exercise only a train.
- the energy storage is designed as a spring or spring package. These ensure a long energy storage.
- the mechanical energy store is designed as a spiral spring whose first end is connected to the rotor of the electric motor, while the second end is preferably locked to an actuator housing.
- the coil spring is stretched or relaxed without additional structural aids solely by the direction of rotation of the electric motor, resulting in a particularly cost-effective design of the linear actuator assembly.
- the coil spring releases the first half maximum actuation torque up to a predetermined point of the actuation path, from which point the second half maximum actuation torque of the electric motor is superimposed.
- Such operation is applicable to the operation of loads having both a non-linear and a constant characteristic.
- the energy store is designed as a compression spring, which is arranged parallel to an axial actuating element.
- the energy storage acts on the axial actuator.
- the compression spring acts to actuate the mechanical unit at the beginning of the actuation path to a point of the actuation path at which a force of the compression spring and a force of the mechanical unit to be actuated cancel each other out. From this point, the force of the compression spring, the force of the axial actuator, which is driven by the electric motor is superimposed, so that in total a maximum of twice twice the maximum operating force is provided.
- the compression spring is connected on the load side to the axial actuating element.
- the compression spring is arranged radially around the electric motor and / or the transmission.
- the axial actuating element is designed as a spindle of the transmission. Since the spindle is part of the transmission, can be dispensed with an additional axial actuator.
- a blocking element for preventing unwanted discharge in the load-free state of the mechanical unit to be actuated is provided on the energy store.
- the linear actuator is designed as an electromechanical or electrohydraulic linear actuator.
- this arrangement can be used in many ways, which leads both to the cost reduction in an electro-mechanical and in an electro-hydraulic linear actuator assembly.
- Fig. 1 shows a first embodiment of an inventive
- Fig. 2 shows a section through the linear actuator assembly of FIG. 1 in the load-free
- FIG. 3 shows a section through the linear actuator arrangement according to FIG. 1 in the loaded state
- FIG. 4 shows a second embodiment of the invention
- a first embodiment of a linear actuator assembly 1 is shown as it is used in a clutch actuation system of a vehicle.
- the linear actuator arrangement 1 comprises a housing 2, which surrounds a rotary linear transmission 3, which in turn is surrounded by a rotor 4 of an electrically mutated electric motor, wherein a stator 5 is arranged opposite the rotor 4 of the electric motor.
- the rotary linear gear 3 comprises a threaded spindle 6, which acts on one side on a plunger 7, which operates, for example, a not further shown clutch of the motor vehicle.
- a support plate 8 is axially arranged, which expands radially and on which a power electronics 9 for controlling the electric motor 4, 5 is arranged.
- a mechanical energy accumulator designed as a spiral spring 10 surrounds the plunger 7, one end of the spiral spring 10 being connected to the rotor 4 of the electric motor 4, 5 via a fastening element 11.
- the second end of the coil spring 10 is fixed to the housing 2.
- the linear actuator assembly 1 is in the load-free state, which means that the coil spring 10 is tensioned.
- the spiral spring 10 is surrounded by a free space in which it can expand in a relaxation (Fig. 2).
- the coil spring 10 as energy storage is thus coupling side parallel to the electric motor 4, 5 integrated into the linear actuator assembly 1 and stores half the maximum actuation energy for actuating the clutch in the no-load condition.
- the coil spring 10 acts as the electric motor 4, 5 via the plunger 7 on the same coupling.
- the coil spring 10 is able to provide a substantially constant torque over several revolutions.
- the electric motor 4, 5 has to apply half the maximum actuating torque in the reverse direction.
- To operate the clutch acts at the beginning only the coil spring 10, which gradually relaxes and gives off a constant half a maximum operating torque for actuating the clutch.
- the coupling is fang a Betsch Trentsweges shifted to a point at which half the maximum operating torque of the coil spring 10 is used. From this point, then the operating torque of the coil spring 10 is superimposed by half the maximum operating torque of the electric motor 4, 5, so that in total a maximum of twice twice the maximum operating torque is provided, whereby the clutch can be actuated in their entire range of motion. Due to this configuration, an electric motor 4, 5 is used, which is only half as strong as in conventional linear actuator assemblies, since this cooperates in combination with a simple coil spring, which is connected in parallel to the electric motor.
- FIG. 2 shows a cross section through the linear actuator arrangement 1 according to FIG. 1, in which the clutch to be actuated is unloaded. From the cross section it can be seen that the coil spring 10 is in the tensioned state and is contracted approximately to the plunger 7, which moves the clutch. The second free end of the coil spring 10 is connected to the housing 2 of the linear actuator assembly 1. The first free end is, as explained in connection with FIG. 1, fixed to the rotor 4 of the electric motor 4, 5.
- Fig. 3 is a second cross section through the inventive
- the relaxed coil spring 10 now has a larger radius and abuts against the housing 2 of the linear actuator assembly 1. If the coil spring 10 is relaxed, the rotor 4 of the electric motor 4, 5 moves in the forward direction and transmits its actuating torque via the plunger 7 to the clutch. In the backward movement of the electric motor 4, 5, the coil spring 10 is stretched again and is thus ready for further actuation of the clutch.
- FIG. 4 A second embodiment of the linear actuator assembly 1 according to the invention is shown in Fig. 4.
- This linear actuator assembly 1 differs from the Fig. 1 only in that instead of the coil spring 10, a compression spring 12 is provided.
- This compression spring 12 is arranged radially around the electric motor 4, 5 and the transmission 3. It extends parallel to the spindle 6, which is part of the transmission 3 and is connected to the load side with this.
- the spindle 6 serves as an axial actuating element, on which the compression spring 12 acts.
- the design of the compression spring characteristic is based on the load characteristic of the mechanical element to be actuated, for example the clutch.
- the compression spring 12 is fully tensioned so clutch to be actuated mechanical element. To achieve this, the electric motor 4, 5 must apply in the reverse direction half the maximum operating torque.
- linear actuator arrangement 1 an energy storage in the form of a coil spring 10 or a compression spring 12 is integrated, which has such an energy capacity, which corresponds to half of the maximum actuation energy for the clutch, which contributes to the drive electric motor 4, 5 and its power electronics 9 can be significantly reduced.
- the linear actuator arrangement 1 can be designed as an electromechanical or electrohydraulic actuator.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112016001470.8T DE112016001470A5 (de) | 2015-04-02 | 2016-03-04 | Linearaktoranordnung zur Betätigung einer mechanischen Einheit, vorzugsweise zur Betätigung einer Kupplung |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015206016.0A DE102015206016A1 (de) | 2015-04-02 | 2015-04-02 | Linearaktoranordnung zur Betätigung einer mechanischen Einheit, vorzugsweise zur Betätigung einer Kupplung |
| DE102015206016.0 | 2015-04-02 | ||
| DE102015217581 | 2015-09-15 | ||
| DE102015217581.2 | 2015-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016155716A1 true WO2016155716A1 (de) | 2016-10-06 |
Family
ID=55640494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2016/200118 Ceased WO2016155716A1 (de) | 2015-04-02 | 2016-03-04 | Aktoranordnung zur betätigung einer mechanischen einheit, vorzugsweise zur betätigung einer kupplung |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112016001470A5 (de) |
| WO (1) | WO2016155716A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025209616A1 (de) * | 2024-04-03 | 2025-10-09 | Schaeffler Technologies AG & Co. KG | Linearaktuator mit radialer zentrierung eines hubbauteils desselben, eine bremsvorrichtung mit dem linearaktuator sowie ein verfahren zum betrieb des linearaktuators |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803211A (en) * | 1996-01-31 | 1998-09-08 | Wilke; Richard | Motorized brake actuator, especially for rail vehicles |
| WO2001021973A1 (de) * | 1999-09-23 | 2001-03-29 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Zuspannvorrichtung für eine fahrzeugbremse |
| WO2002044002A1 (de) * | 2000-11-28 | 2002-06-06 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Bremsaktuator |
| WO2003052286A1 (en) * | 2001-12-18 | 2003-06-26 | Haldex Brake Products Ab | A parking brake arrangement in an electrically operated brake |
| WO2004001254A1 (de) * | 2002-06-21 | 2003-12-31 | Compact Dynamics Gmbh | Elektrische kraftfahrzeug-scheibenbremse |
| DE102014223578A1 (de) | 2013-12-17 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Energiespeichervorrichtung zur Motorunterstützung |
-
2016
- 2016-03-04 WO PCT/DE2016/200118 patent/WO2016155716A1/de not_active Ceased
- 2016-03-04 DE DE112016001470.8T patent/DE112016001470A5/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803211A (en) * | 1996-01-31 | 1998-09-08 | Wilke; Richard | Motorized brake actuator, especially for rail vehicles |
| WO2001021973A1 (de) * | 1999-09-23 | 2001-03-29 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Zuspannvorrichtung für eine fahrzeugbremse |
| WO2002044002A1 (de) * | 2000-11-28 | 2002-06-06 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Bremsaktuator |
| WO2003052286A1 (en) * | 2001-12-18 | 2003-06-26 | Haldex Brake Products Ab | A parking brake arrangement in an electrically operated brake |
| WO2004001254A1 (de) * | 2002-06-21 | 2003-12-31 | Compact Dynamics Gmbh | Elektrische kraftfahrzeug-scheibenbremse |
| DE102014223578A1 (de) | 2013-12-17 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Energiespeichervorrichtung zur Motorunterstützung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025209616A1 (de) * | 2024-04-03 | 2025-10-09 | Schaeffler Technologies AG & Co. KG | Linearaktuator mit radialer zentrierung eines hubbauteils desselben, eine bremsvorrichtung mit dem linearaktuator sowie ein verfahren zum betrieb des linearaktuators |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016001470A5 (de) | 2017-12-21 |
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