US20120222507A1 - Positioning device for converting a rotary motion into a linear motion - Google Patents
Positioning device for converting a rotary motion into a linear motion Download PDFInfo
- Publication number
- US20120222507A1 US20120222507A1 US13/510,012 US201013510012A US2012222507A1 US 20120222507 A1 US20120222507 A1 US 20120222507A1 US 201013510012 A US201013510012 A US 201013510012A US 2012222507 A1 US2012222507 A1 US 2012222507A1
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- US
- United States
- Prior art keywords
- slot
- output shaft
- positioning device
- eccentric
- adjusting element
- 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.)
- Abandoned
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Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
- F02B37/186—Arrangements of actuators or linkage for bypass valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18208—Crank, pitman, and slide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18296—Cam and slide
Definitions
- the present invention provides a positioning device for converting a rotary motion into a linear motion comprising a drive unit generating a torque, a drive shaft on which an eccentric is arranged, an output shaft arranged at the eccentric and movable in a slot of a coupling member, and an adjusting element connected with the coupling element and supported so that the adjusting element is adapted to be moved linearly together with the coupling element.
- Such positioning devices are used in particular to drive exhaust gas recirculation valves, but they may also be used in waste gate valves, butterfly valves or as VNT actuators.
- valves with positioning devices or similar positioning devices wherein an electric motor serves as the drive unit whose drive shaft is coupled with eccentrics of various types, the motion of the eccentrics being converted, via different coupling mechanisms, into a linear motion of a valve rod serving as an adjusting element.
- EP 1 319 879 A1 describes a valve driven by an electric motor, wherein an output shaft is arranged eccentrically with respect to a drive shaft, a roller being provided rotatably on the output shaft and traveling in a slot of a coupling element.
- the roller is spring-biased in one direction.
- the traveling path of the coupling element slot provided for the roller is perpendicular to the direction of movement of the coupling element. The development of the force-stroke curve of this element is thus fixed.
- a valve driven by an electric motor is also described in EP 1 378 655 A2, wherein a rotating member comprises two opposite slots in which a rod is guided which in turn is connected with a valve rod.
- the slot may here be configured as a defined curve.
- An aspect of the present invention is to provide a positioning device which allows the selection of a force-stroke curve or a rotational angle-stroke curve for specific applications and which at the same time requires as little space as possible.
- the present invention provides a positioning device for converting a rotary motion into a linear motion which includes a drive unit configured to generate a torque, a drive shaft on which an eccentric is arranged, a coupling element comprising a slot, an output shaft arranged at the eccentric.
- the output shaft is configured to move in the slot of the coupling element.
- An adjusting element is connected with the coupling element.
- the adjusting element is supported so as to be linearly movable with the coupling element.
- the slot comprises a guide path configured to cooperate with the eccentric which comprises an angle with a plane perpendicular to a direction of movement of the adjusting element.
- FIG. 1 shows a perspective view of the coupling device and the eccentric of a positioning device according to prior art
- FIGS. 2 a ) and b ) shows the coupling device and the eccentric of a positioning device of the present invention at the respective end positions
- FIG. 3 shows the function of linear stroke over an angle of rotation for a positioning device with a coupling device of FIG. 2 in graphic representation
- FIG. 4 shows the function of force over stroke for a positioning device with a coupling device of FIG. 2 in a graphic representation, compared with the corresponding function of a plane slot.
- the slot can, for example, describe a curve with a varying pitch. This provides additional possibilities for the adjustment of force-stroke curves to specific applications.
- a roller or a bearing can, for example, be arranged on the output shaft, which travels in the slot so that friction between the slot or its traveling path and the outer path of the rolling body, i.e. the bearing or the roller in the present instance, is minimized.
- the initial position of the rotation for the actuation of the adjusting element can, for example, be a position which, seen in the direction of rotation, is situated before a dead center existing for the axial movement of the output shaft, which dead center is passed during the rotational movement to the end position. It thus becomes possible to realize short strokes of a valve with rather large actuating angles, which allows for an exact proportioning in the sensitive adjustment range shortly after leaving the closed position.
- a first portion of the slot to be traveled by the output shaft can, for example, have an upward slope with respect to the plane perpendicular to the direction of movement of the adjusting element, while a second portion to be traveled can, for example, have a downward slope.
- the upward slope in the first portion to be traveled can, for example, be steeper than the upward slope of a rolling line of the output shaft when traveling through the portion from a first end position to the top dead center, seen with respect to the axial movement of the output shaft. It is thereby provided that a stroke occurs in this adjustment region.
- the available adjustment force thereby becomes independent of tolerances that could occur, for example, as a result of a thermal expansion of the valve rod.
- Such an almost constant force curve in the region of the closed position for about 15-25% of the full stroke is required in particular in case of the application of the positioning device as an actuator of a waste gate valve, because of the prevailing gas pressure forces at the gate.
- a positioning device is thus provided whose coupling device, in combination with the eccentric, leads to the possibility of a selectable force-stroke setting by appropriately adjusting the selected rotational angle range with respect to the slot.
- the present positioning device also allows an adjustment between the angle of rotation and the stroke for a better proportioning.
- the required structural space is at the same time kept very small.
- FIG. 1 illustrates a detail of a positioning device corresponding to the prior art.
- the part here illustrated is the part of the positioning device essential to the present invention.
- the positioning device comprises a non-illustrated rotary drive unit such as, for example, an electric motor, which drives a drive shaft 2 .
- a non-illustrated rotary drive unit such as, for example, an electric motor, which drives a drive shaft 2 .
- an eccentric 4 is provided on the end of the drive shaft 2 opposite the drive unit.
- an output shaft 6 is provided that extends parallel to the drive shaft 2 so that the output shaft 6 rotates in a circular manner about the drive shaft 2 when the drive shaft 2 is rotated.
- a ball bearing 8 is arranged at the end of the output shaft 6 opposite the eccentric 4 , the inner race thereof being fastened on the output shaft 6 .
- An outer race 10 of the ball bearing 8 moves in a slot 12 of a coupling element 14 to which an adjusting element 16 in the form of a valve rod of a globe valve not illustrated in detail herein.
- the valve rod is supported in a housing in a manner known per se so that it can only perform a linear stroke movement with the coupling element.
- the slot 12 is an opening limited in height by two limiting walls 17 , 18 whose mutual distance substantially corresponds to the circumference of the ball bearing 8 and whose width is determined by the length of the eccentric 4 and by the adjustment angle thereof.
- the limiting walls 17 , 18 that serve as the guide path 20 of the ball bearing 8 are designed as straight planes that extend perpendicularly to the direction of movement of the valve rod 8 when the drive unit is operated.
- the slot 12 according to the present invention, or the resulting guide track 20 , illustrated in FIG. 2 is designed as a curve.
- a curve in the sense of the present application is thus a line that is not necessarily completely linear.
- This curve is designed so that a positioning device of this type is suitable, for example, to drive a waste gate valve. With such a valve, it is desired that, when leaving the closed position of the valve, the valve force remains approximately constant over a certain opening range.
- FIG. 2 illustrates the eccentric 4 in a position in which the adjusting element 16 is in a first end position that is defined, for example, by correspondingly formed stops for upstream gears or other movable parts.
- the bearing 8 is located at the left end of the slot 12 below a dead center 24 of the eccentric 4 that is the top dead center with respect to the axial movement of the pivot point 6 .
- the bearing 8 is rotated at a constant distance around the rotational axis of the drive shaft 2 and rolls along the guide path 20 of the slot 12 that is only movable in the vertical direction.
- a first part of the slot 12 travelled by the rolling of the bearing 8 has a slope 22 with respect to a plane vertical to the actuation direction of the adjusting element, which slope is steeper than the respective circular arc traveled by the bearing. Despite the upward movement of the be aring, this causes a downward movement of the slot 12 and thus of the coupling element 14 and the adjusting element 16 .
- FIG. 2 b illustrates the second end position reached after both parts 22 , 26 have been passed.
- the graph 30 illustrates the force-stroke curve of a positioning device according to FIG. 2
- the dotted graph 32 represents the force-stroke curve of a positioning device with a guide path perpendicular to the movement direction of the adjusting element as illustrated in FIG. 1 .
- the valve force to be applied by a positioning device of FIG. 2 contrary to the valve force to be applied by a positioning device of FIG. 1 , only changes slightly with the stroke.
- the positioning device of the present invention allows adjusting both force-stroke curves and rotational angle-stroke curves depending on the respective application, so that such a positioning device can be used in many different applications, basically without resulting in a larger required structural space as compared with known positioning devices.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transmission Devices (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A positioning device for converting a rotary motion into a linear motion includes a drive unit configured to generate a torque, a drive shaft on which an eccentric is arranged, a coupling element comprising a slot, an output shaft arranged at the eccentric. The output shaft is configured to move in the slot of the coupling element. An adjusting element is connected with the coupling element. The adjusting element is supported so as to be linearly movable with the coupling element. The slot comprises a guide path configured to cooperate with the eccentric which comprises an angle with a plane perpendicular to a direction of movement of the adjusting element.
Description
- This application is a U.S. National Phase application under 35 U.S.C. §371 of International Application No. PCT/EP2010/066613, filed on Nov. 2, 2010 and which claims benefit to German Patent Application No. 10 2009 053 428.8, filed on Nov. 19, 2009. The International Application was published in German on May 26, 2011 as WO 2011/061051 A1 under PCT Article 21(2).
- The present invention provides a positioning device for converting a rotary motion into a linear motion comprising a drive unit generating a torque, a drive shaft on which an eccentric is arranged, an output shaft arranged at the eccentric and movable in a slot of a coupling member, and an adjusting element connected with the coupling element and supported so that the adjusting element is adapted to be moved linearly together with the coupling element.
- Such positioning devices are used in particular to drive exhaust gas recirculation valves, but they may also be used in waste gate valves, butterfly valves or as VNT actuators.
- Various valves with positioning devices or similar positioning devices are known, wherein an electric motor serves as the drive unit whose drive shaft is coupled with eccentrics of various types, the motion of the eccentrics being converted, via different coupling mechanisms, into a linear motion of a valve rod serving as an adjusting element.
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EP 1 319 879 A1 describes a valve driven by an electric motor, wherein an output shaft is arranged eccentrically with respect to a drive shaft, a roller being provided rotatably on the output shaft and traveling in a slot of a coupling element. The roller is spring-biased in one direction. The traveling path of the coupling element slot provided for the roller is perpendicular to the direction of movement of the coupling element. The development of the force-stroke curve of this element is thus fixed. - DE 102 21 711 A1 describes a similar valve wherein two eccentrics are coupled with each other. In this design, the slot that serves as a traveling path for a ball bearing is also designed as a straight line that extends perpendicularly to the direction of movement. It is again not possible to provide special required force-stroke curves during the actuation of the valve with sufficient variability.
- A valve driven by an electric motor is also described in
EP 1 378 655 A2, wherein a rotating member comprises two opposite slots in which a rod is guided which in turn is connected with a valve rod. The slot may here be configured as a defined curve. With this design, it is possible to set a defined effort for the adjustment of the valve as a direct function of the stroke. The required structural space is rather large, as is the number of components needed. - An aspect of the present invention is to provide a positioning device which allows the selection of a force-stroke curve or a rotational angle-stroke curve for specific applications and which at the same time requires as little space as possible.
- In an embodiment, the present invention provides a positioning device for converting a rotary motion into a linear motion which includes a drive unit configured to generate a torque, a drive shaft on which an eccentric is arranged, a coupling element comprising a slot, an output shaft arranged at the eccentric. The output shaft is configured to move in the slot of the coupling element. An adjusting element is connected with the coupling element. The adjusting element is supported so as to be linearly movable with the coupling element. The slot comprises a guide path configured to cooperate with the eccentric which comprises an angle with a plane perpendicular to a direction of movement of the adjusting element. Due of the previously unknown interaction of an eccentric drive and a slot curve path, it is possible for the first time, and to a much larger extent than before, to set force-stroke curves rotational angle-stroke curves that allow for an adjustment of such a positioning device to a number of different applications. The structural space is thereby not larger than with other known eccentric drives. With the same total stroke, the length of the eccentric may be chosen to be even smaller.
- The present invention is described in greater detail below on the basis of embodiments and of the drawings in which:
-
FIG. 1 shows a perspective view of the coupling device and the eccentric of a positioning device according to prior art; -
FIGS. 2 a) and b) shows the coupling device and the eccentric of a positioning device of the present invention at the respective end positions; -
FIG. 3 shows the function of linear stroke over an angle of rotation for a positioning device with a coupling device ofFIG. 2 in graphic representation; and -
FIG. 4 shows the function of force over stroke for a positioning device with a coupling device ofFIG. 2 in a graphic representation, compared with the corresponding function of a plane slot. - In an embodiment of the present invention, the slot can, for example, describe a curve with a varying pitch. This provides additional possibilities for the adjustment of force-stroke curves to specific applications.
- In an embodiment of the present invention, a roller or a bearing can, for example, be arranged on the output shaft, which travels in the slot so that friction between the slot or its traveling path and the outer path of the rolling body, i.e. the bearing or the roller in the present instance, is minimized.
- In an embodiment of the present invention, the initial position of the rotation for the actuation of the adjusting element can, for example, be a position which, seen in the direction of rotation, is situated before a dead center existing for the axial movement of the output shaft, which dead center is passed during the rotational movement to the end position. It thus becomes possible to realize short strokes of a valve with rather large actuating angles, which allows for an exact proportioning in the sensitive adjustment range shortly after leaving the closed position.
- In an embodiment of the present invention, a first portion of the slot to be traveled by the output shaft can, for example, have an upward slope with respect to the plane perpendicular to the direction of movement of the adjusting element, while a second portion to be traveled can, for example, have a downward slope. With such a design, a further adaptation of the relationship between the angle of rotation and the resulting stroke can be obtained as well as an adaptation to a desired force-stroke characteristic which may lead, for example, to a largely constant effort for the adjustment in the first portion. At the same time, such an adaptation allows for an additional reduction outside an upstream transmission.
- In an embodiment of the present invention, the upward slope in the first portion to be traveled can, for example, be steeper than the upward slope of a rolling line of the output shaft when traveling through the portion from a first end position to the top dead center, seen with respect to the axial movement of the output shaft. It is thereby provided that a stroke occurs in this adjustment region.
- The can thus be kept constant in a significant region about at least one of the two end stops. The available adjustment force thereby becomes independent of tolerances that could occur, for example, as a result of a thermal expansion of the valve rod. Such an almost constant force curve in the region of the closed position for about 15-25% of the full stroke is required in particular in case of the application of the positioning device as an actuator of a waste gate valve, because of the prevailing gas pressure forces at the gate.
- A positioning device is thus provided whose coupling device, in combination with the eccentric, leads to the possibility of a selectable force-stroke setting by appropriately adjusting the selected rotational angle range with respect to the slot. The present positioning device also allows an adjustment between the angle of rotation and the stroke for a better proportioning. The required structural space is at the same time kept very small.
- An embodiment of the positioning device of the present invention is illustrated in the drawings and will hereinafter be described.
-
FIG. 1 illustrates a detail of a positioning device corresponding to the prior art. The part here illustrated is the part of the positioning device essential to the present invention. - As is known per se, the positioning device comprises a non-illustrated rotary drive unit such as, for example, an electric motor, which drives a
drive shaft 2. On the end of thedrive shaft 2 opposite the drive unit, an eccentric 4 is provided in a manner secured against rotation. At the end of the eccentric 4 remote from thedrive shaft 2, anoutput shaft 6 is provided that extends parallel to thedrive shaft 2 so that theoutput shaft 6 rotates in a circular manner about thedrive shaft 2 when thedrive shaft 2 is rotated. - A ball bearing 8 is arranged at the end of the
output shaft 6 opposite the eccentric 4, the inner race thereof being fastened on theoutput shaft 6. Anouter race 10 of the ball bearing 8 moves in aslot 12 of acoupling element 14 to which an adjustingelement 16 in the form of a valve rod of a globe valve not illustrated in detail herein. The valve rod is supported in a housing in a manner known per se so that it can only perform a linear stroke movement with the coupling element. In thecoupling device 14 illustrated, theslot 12 is an opening limited in height by twolimiting walls limiting walls guide path 20 of the ball bearing 8 are designed as straight planes that extend perpendicularly to the direction of movement of thevalve rod 8 when the drive unit is operated. - In comparison with the above, the
slot 12 according to the present invention, or theresulting guide track 20, illustrated inFIG. 2 is designed as a curve. A curve in the sense of the present application is thus a line that is not necessarily completely linear. - This curve is designed so that a positioning device of this type is suitable, for example, to drive a waste gate valve. With such a valve, it is desired that, when leaving the closed position of the valve, the valve force remains approximately constant over a certain opening range.
- In
FIG. 2 , the eccentric 4 is only indicated as a connecting line between the fulcrum of the eccentric 4 and thepivot point 6 of thebearing 8 or a roller.FIG. 2 a) illustrates thecoupling element 14 in a position in which the adjustingelement 16 is in a first end position that is defined, for example, by correspondingly formed stops for upstream gears or other movable parts. In this position, thebearing 8 is located at the left end of theslot 12 below adead center 24 of the eccentric 4 that is the top dead center with respect to the axial movement of thepivot point 6. - If, hereafter, the drive unit is operated clockwise and the eccentric is thereby rotated clockwise, the
bearing 8 is rotated at a constant distance around the rotational axis of thedrive shaft 2 and rolls along theguide path 20 of theslot 12 that is only movable in the vertical direction. A first part of theslot 12 travelled by the rolling of thebearing 8 has aslope 22 with respect to a plane vertical to the actuation direction of the adjusting element, which slope is steeper than the respective circular arc traveled by the bearing. Despite the upward movement of the be aring, this causes a downward movement of theslot 12 and thus of thecoupling element 14 and the adjustingelement 16. The part of theguide path 20 following after the topdead center 24 has been passed first has a lesserupward slope 22 that eventually passes into a downward slope in asecond part 26.FIG. 2 b) illustrates the second end position reached after bothparts - The stroke resulting from this movement is plotted in
FIG. 3 over the rotational angle. It is evident that the resultinggraph 28 is rather flat in the first part and is significantly steeper as the stroke becomes larger. Such a curve is advantageous, since it is drastically facilitates volume flow control, because in the part just after opening a small change in the stroke results in a rather significant change in the volume flow, whereas, with a rather large stroke, a change in stroke only results in rather small changes in the volume flow. - In
FIG. 4 thegraph 30 illustrates the force-stroke curve of a positioning device according toFIG. 2 , whereas the dottedgraph 32 represents the force-stroke curve of a positioning device with a guide path perpendicular to the movement direction of the adjusting element as illustrated inFIG. 1 . In a range of up to about 4 mm of stroke, corresponding to about 25% of the total stroke, the valve force to be applied by a positioning device ofFIG. 2 , contrary to the valve force to be applied by a positioning device ofFIG. 1 , only changes slightly with the stroke. - Besides this advantage of setting a desired force curve, it is also possible to realize additional reductions and transmissions with respect to the entire adjustment range by using the slot to increase or reduce the adjusting path of the adjusting element relative to the length of stroke of the output shaft.
- Additional structural space can be saved in this manner. The positioning device of the present invention allows adjusting both force-stroke curves and rotational angle-stroke curves depending on the respective application, so that such a positioning device can be used in many different applications, basically without resulting in a larger required structural space as compared with known positioning devices.
- The scope of protection of the claims is not restricted to the embodiment described, different forms of the guide path may be desired depending on the application, in order to achieve the advantageous force-stroke curve. It is also possible to design such a positioning device to act in the opposite direction.
Claims (7)
1-6. (canceled)
7. A positioning device for converting a rotary motion into a linear motion, the positioning device comprising:
a drive unit configured to generate a torque;
a drive shaft on which an eccentric is arranged;
a coupling element comprising a slot;
an output shaft arranged at the eccentric, the output shaft being configured to move in the slot of the coupling element; and
an adjusting element connected with the coupling element, the adjusting element being supported so as to be linearly movable with the coupling element,
wherein, the slot comprises a guide path configured to cooperate with the eccentric which comprises an angle with a plane perpendicular to a direction of movement of the adjusting element.
8. The positioning device as recited in claim 7 , wherein the guide path is a curve with a changing slope.
9. The positioning device as recited in claim 7 , further comprising a roller or a bearing arranged on the output shaft, wherein the roller or bearing is configured to move in the slot.
10. The positioning device as recited in claim 7 , wherein an initial position of a rotation for an actuation of the adjusting element is a position that is located, seen in a direction of rotation, before a dead center existing for an axial movement of the output shaft, the dead center being passed during a rotational movement to an end position.
11. The positioning device as recited in claim 10 , further including a first part of the slot to be travelled by the output shaft and a second part of the slot to be travelled by the output shaft, wherein the first part of the slot to be traveled by the output shaft has an ascending slope with respect to a plane vertical with respect to a direction of movement of the adjusting element, and the second part of the slot to be traveled by the output shaft has a descending slope with respect to the plane vertical with respect to the direction of movement of the adjusting element.
12. The positioning device as recited in claim 11 , further including a circular arc with a slope, wherein the ascending slope in the first part of the slot to be traveled by the output shaft is steeper than the slope of the circular arc when the output shaft travels from a first end portion to a top dead center of the axial movement.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102009053428A DE102009053428A1 (en) | 2009-11-19 | 2009-11-19 | Actuator for converting a rotary motion into a linear motion |
DE102009053428.8 | 2009-11-19 | ||
PCT/EP2010/066613 WO2011061051A1 (en) | 2009-11-19 | 2010-11-02 | Positioning device for converting a rotary motion into a linear motion |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2010/066613 A-371-Of-International WO2011061051A1 (en) | 2009-11-19 | 2010-11-02 | Positioning device for converting a rotary motion into a linear motion |
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Application Number | Title | Priority Date | Filing Date |
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US14/612,303 Continuation US10302217B2 (en) | 2009-11-19 | 2015-02-03 | Valve unit and a positioning device for converting a rotary motion into a linear motion |
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US20120222507A1 true US20120222507A1 (en) | 2012-09-06 |
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ID=43733871
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US13/510,012 Abandoned US20120222507A1 (en) | 2009-11-19 | 2010-11-02 | Positioning device for converting a rotary motion into a linear motion |
US14/612,303 Active 2032-02-28 US10302217B2 (en) | 2009-11-19 | 2015-02-03 | Valve unit and a positioning device for converting a rotary motion into a linear motion |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US14/612,303 Active 2032-02-28 US10302217B2 (en) | 2009-11-19 | 2015-02-03 | Valve unit and a positioning device for converting a rotary motion into a linear motion |
Country Status (4)
Country | Link |
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US (2) | US20120222507A1 (en) |
EP (1) | EP2501921B1 (en) |
DE (1) | DE102009053428A1 (en) |
WO (1) | WO2011061051A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120312107A1 (en) * | 2009-12-22 | 2012-12-13 | Valeo Systemes De Controle Moteur | Device for converting rotational movement into translational movement |
US11781450B2 (en) * | 2019-09-03 | 2023-10-10 | Husco Automotive Holdings Llc | Systems and methods for a poppet valve assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102000758B1 (en) * | 2017-05-23 | 2019-07-17 | 이래에이엠에스 주식회사 | Integrated back pressure and egr valve module |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US644014A (en) * | 1899-01-24 | 1900-02-20 | Manetho C Jackson | Power-hammer. |
US1505856A (en) * | 1922-02-13 | 1924-08-19 | Briggs Henry | Explosive motor |
US3451276A (en) * | 1966-09-20 | 1969-06-24 | F G Miles Eng Ltd | Actuator mechanisms |
US4272996A (en) * | 1979-06-19 | 1981-06-16 | Black & Decker Inc. | Scotch yoke having a curved track |
US5014539A (en) * | 1989-01-13 | 1991-05-14 | Eich Dieter K | Crimp press |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1349661A (en) * | 1919-09-12 | 1920-08-17 | Bulkrug Machine Corp | Cam |
DE2726341A1 (en) * | 1977-06-10 | 1978-12-14 | Huesser Paul | Slide valve with spring centering system - has widened end portions in actuating plate forming locking positions |
JP3597453B2 (en) | 2000-09-22 | 2004-12-08 | 株式会社市丸技研 | Direct acting electric valve |
DE10221711A1 (en) | 2002-05-16 | 2003-11-27 | Pierburg Gmbh | valve system |
US7086636B2 (en) * | 2002-07-02 | 2006-08-08 | Borgwarner Inc. | Gaseous fluid metering valve |
DE10336976B4 (en) * | 2003-08-12 | 2005-08-18 | Pierburg Gmbh | Valve device for an internal combustion engine |
DE50306462D1 (en) * | 2003-10-24 | 2007-03-22 | Cooper Standard Automotive D | Exhaust gas recirculation valve |
GB0419060D0 (en) * | 2004-08-27 | 2004-09-29 | Delphi Tech Inc | Valve actuating mechanism |
US20060185464A1 (en) * | 2005-02-22 | 2006-08-24 | Borgwarner Inc. | Rotary actuator |
US7461642B2 (en) * | 2006-01-13 | 2008-12-09 | Delphi Technologies, Inc. | Rotary-actuated exhaust gas recirculation valve having a seating force attenuator |
DE102006009153A1 (en) * | 2006-02-24 | 2007-08-30 | Mahle International Gmbh | Exhaust gas recirculation device |
-
2009
- 2009-11-19 DE DE102009053428A patent/DE102009053428A1/en not_active Withdrawn
-
2010
- 2010-11-02 WO PCT/EP2010/066613 patent/WO2011061051A1/en active Application Filing
- 2010-11-02 US US13/510,012 patent/US20120222507A1/en not_active Abandoned
- 2010-11-02 EP EP10784725.3A patent/EP2501921B1/en active Active
-
2015
- 2015-02-03 US US14/612,303 patent/US10302217B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US644014A (en) * | 1899-01-24 | 1900-02-20 | Manetho C Jackson | Power-hammer. |
US1505856A (en) * | 1922-02-13 | 1924-08-19 | Briggs Henry | Explosive motor |
US3451276A (en) * | 1966-09-20 | 1969-06-24 | F G Miles Eng Ltd | Actuator mechanisms |
US4272996A (en) * | 1979-06-19 | 1981-06-16 | Black & Decker Inc. | Scotch yoke having a curved track |
US5014539A (en) * | 1989-01-13 | 1991-05-14 | Eich Dieter K | Crimp press |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120312107A1 (en) * | 2009-12-22 | 2012-12-13 | Valeo Systemes De Controle Moteur | Device for converting rotational movement into translational movement |
US8746094B2 (en) * | 2009-12-22 | 2014-06-10 | Valeo Systemes De Controle Moteur | Device for converting rotational movement into translational movement |
US11781450B2 (en) * | 2019-09-03 | 2023-10-10 | Husco Automotive Holdings Llc | Systems and methods for a poppet valve assembly |
Also Published As
Publication number | Publication date |
---|---|
US20150143933A1 (en) | 2015-05-28 |
EP2501921B1 (en) | 2013-08-28 |
EP2501921A1 (en) | 2012-09-26 |
DE102009053428A1 (en) | 2011-06-09 |
US10302217B2 (en) | 2019-05-28 |
WO2011061051A1 (en) | 2011-05-26 |
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Owner name: PIERBURG GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TOENNESMANN, ANDRES, MR.;NOWAK, MARTIN, MR.;KOESTER, ANDREAS, MR.;SIGNING DATES FROM 20120425 TO 20120502;REEL/FRAME:028215/0036 |
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