WO2018091024A1 - Ensemble de transmission à fonction de blocage - Google Patents

Ensemble de transmission à fonction de blocage Download PDF

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Publication number
WO2018091024A1
WO2018091024A1 PCT/DE2017/100867 DE2017100867W WO2018091024A1 WO 2018091024 A1 WO2018091024 A1 WO 2018091024A1 DE 2017100867 W DE2017100867 W DE 2017100867W WO 2018091024 A1 WO2018091024 A1 WO 2018091024A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
gear
output
locking
contour
Prior art date
Application number
PCT/DE2017/100867
Other languages
German (de)
English (en)
Inventor
Daniel Faber
Benjamin Wübbolt-Gorbatenko
Harald Hochmuth
Jochen Rosenfeld
Hartmut Krehmer
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2018091024A1 publication Critical patent/WO2018091024A1/fr

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
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
    • 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
    • F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
    • F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission 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
    • F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
    • F16H27/04—Step-by-step mechanisms without freewheel members, e.g. Geneva drives for converting continuous rotation into a step-by-step rotary movement
    • F16H27/08—Step-by-step mechanisms without freewheel members, e.g. Geneva drives for converting continuous rotation into a step-by-step rotary movement with driving toothed gears with interrupted toothing

Definitions

  • the invention relates to a gear arrangement with blocking function with a drive wheel, which is arranged rotatably about a drive shaft and which has a drive gear section in the circumferential direction, with a driven part, which has a driven gear portion, wherein the drive gear portion and the driven gear portion engageable with each other by a rotation of the drive wheel are such that the gear assembly is in a drive state, wherein the drive wheel has a drive and the driven portion Entreibssperrabrough, the drive and the output cut-off section are engageable by a further rotation of the drive wheel with each other, so that the gear assembly is in a locked state.
  • Spur gear stages as parts of gears usually have two spur gears, which are engaged with each other, wherein one of the spur gears forms a drive and the other spur gear an output. In this way, it is possible to translate on the one hand an applied torque or to undercut and / or to transmit the torque 1: 1.
  • a permanent transmission for example in the sense of an endless rotation of the output is not provided, but rather serve such gear as a step gear, wherein via the drive an actuating movement introduced and transmitted via the output to an actuator, so that it occupies a parking position. As soon as the adjusting movement has taken place, the gear should hold the setting position.
  • a transmission arrangement which is designed for transmitting an adjusting movement and for implementing a blocking function.
  • the gear arrangement is formed in a preferred embodiment as an electromechanical actuator, in particular as an electric motor driven linear drive, and comprises in this preferred embodiment, an electric motor for driving the adjusting movement.
  • the gear arrangement may have further gearboxes as pre-translation after the electric motor and / or before the linear drive.
  • the gear arrangement has a drive wheel, which is arranged rotatably about a drive axis.
  • the drive wheel is at least directly operatively connected to the electric motor or operatively connected, so that a drive torque of the electric motor can be transmitted to the drive wheel.
  • the drive wheel is formed with a drive toothing section in the direction of rotation about the drive axis with a drive toothing, wherein the drive toothed section preferably has radially outwardly facing drive teeth as the drive toothing.
  • the drive wheel is in the drive toothing section particularly preferably circular and / or formed as a spur gear.
  • the drive toothing of the drive toothing section is arranged on a first pitch circle radius.
  • the gear assembly includes a driven part
  • the driven part has at least partially on a driven gear teeth with output teeth.
  • the output gear is at least partially arranged in one or more output gear section or sections.
  • the drive gear section and the driven gear section can be brought together by a rotation of the drive wheel in a particular meshing engagement.
  • the gear assembly is in a drive state when the output gear portion and the drive gear portion mesh with each other and / or engage with each other.
  • the drive wheel also has a drive locking section in the direction of rotation and the driven part has at least one driven-off section.
  • the drive-locking portion and the driven-off portion can be engaged with each other by further rotation or further rotation of the drive wheel from the driving state, so that the gear assembly is in a locked state.
  • the drive-locking section and the driven-off section form a positive locking device, in particular for the driven part, in particular only for the driven part, wherein the drive wheel remains permanently rotatable.
  • the gear assembly is formed so that upon rotation of the drive wheel in a rotational direction, first the drive state is assumed, wherein the drive gear portion and the output gear portion are engaged and the drive wheel drives the driven part. In a further rotation of the drive wheel of the drive and the Abtriebssperrabites be brought into operative connection, so that the gear assembly is in the locked state.
  • Gear arrangement is alternately in the drive state and the lock state can be brought.
  • the gear arrangement alternately transmits an actuating movement in the drive state and converts in the locked state, in particular a positive locking safety device.
  • a stepwise adjustment of the driven part with a freely selectable number of stages and at the same time a form-locking standstill between stages is implemented.
  • the output part is designed as a linear rail.
  • the output gear portion extends as an output gear along the linear rail.
  • the output cut-off sections or those are lined up along the longitudinal extent of the linear rail.
  • the gear arrangement is designed as a self-locking linear gear and / or a self-locking linear axis. The transition from a rotary gearbox to a linear gearbox extends the range of applications.
  • the drive state is canceled in the locked state.
  • the driven member is not displaced relative to the drive wheel but remains stationary relative to the drive wheel.
  • the transmission ratio in the locked state from the drive wheel to the driven part is infinitely large, since an angle change of the rotational angle of the drive wheel does not lead to a translation of the driven part.
  • the drive-locking section is formed in an axial plan view as a positive contour, in particular a convex contour, and the driven-off section as a negative contour, in particular a concave contour.
  • the positive contour takes in a preferred embodiment of the invention in the axial plan view with respect to the drive axis a circular arc-shaped active contour whose center is defined by the drive axis and its radius by the distance to the drive axis.
  • the output contour is formed in the axial plan view with respect to the drive axis as a circular arc-shaped counteracting contour, wherein the center lies on a circle around the drive axis in the locked state, and wherein the radius is formed by the distance to the drive axle in the locked state.
  • the circular-arc-shaped active contour lies in the circular-arc-shaped counteracting contour, wherein the radius of the circular arc-shaped counteracting contour is equal to or greater than the radius of the circular arc-shaped active contour.
  • the gear arrangement forms a toothed differential gear and axially offset to a Sperruntergetriebe.
  • the gear sub-transmission includes the drive gear portion and the output gear portion and the ratchet gear, the drive gear portion and the output cut-off portion.
  • the toothed under gear and the locking lower gear are arranged offset in the axial direction parallel to each other.
  • the functions "drive-locks" are separated from each other axially and thus decoupled.
  • the drive toothing section in an axial plan view of the drive wheel, extend over a drive toothing angle and the drive cut section via a drive locking angle in the circumferential direction about the drive axis.
  • the gear arrangement can have exactly one drive toothing section and / or exactly one drive cut section.
  • the drive wheel has at least or exactly two drive gear sections and / or at least or exactly two drive block sections. Thus, at least or exactly twice the drive state and at least or exactly twice the locked state per revolution of the drive wheel.
  • the drive teeth sections are arranged between the drive block sections relative to the axial extension of the drive axle, in particular so that these engage around the drive tooth sections on both sides or in the manner of a bracket.
  • the output gear sections are arranged between the output cut-off sections, in particular so that these engage around the output gear sections on both sides or in the manner of a clip.
  • control ribs can be arranged on both sides of the output gear sections, on which the output gear sections are arranged.
  • two Sperruntergetriebe are formed by the Abtriebssperrabroughe and the drive locking.
  • the output cut-off portions of the two locking lower gear are arranged offset to one another in the longitudinal extension to the linear rail, so that alternately sets the one and subsequently the other locking lower gear the blocking state.
  • the output part has a plurality of output cut-off sections.
  • the number of multiple output cutoff sections corresponds to the number of stages of possible positive locking shutdown in the longitudinal extent of the linear rail.
  • the output cut-off sections are offset in the longitudinal extension in each case by a developed drive tooth angle, so that the output cut sections are separated from one another in the longitudinal direction.
  • the output gear sections may be formed as subsections, but it is also possible that the output member has a continuous in the longitudinal direction of the output gear, which form the plurality of output gear sections.
  • the number of teeth of the drive gear portion is tuned to the number of teeth of one of the output gear portions, so that the drive and driven part are forced to each other, wherein the positive guide is designed so that upon rotation of the drive wheel of the gear assembly inevitably alternately Locked state and the drive state are taken.
  • the gear assembly is designed as an electromechanical actuator, e.g. for actuators or actuation and locking units for linear movements, as they occur at various points in motor vehicles.
  • Figure 1 is a schematic, three-dimensional representation of a gear arrangement as an embodiment of the invention in a locked state
  • Figure 2 is a schematic, three-dimensional representation of the gear assembly of Figure 1 in an operating condition
  • Figure 3 is a schematic, three-dimensional representation of the gear arrangement of Figure 1 in a further blocking state
  • Figure 4 is a schematic, three-dimensional representation of the gear assembly of Figure 1 in a further operating condition.
  • FIG. 1 shows, in a schematic three-dimensional representation, a gear arrangement 1 as an exemplary embodiment of the invention.
  • the gear arrangement 1 has a drive wheel 2 and an output part, which is designed as a linear rail 3, on.
  • the drive wheel 2 is for example connected to an electric motor 4, not shown, the linear rail 3 is in a manner not shown, for example. connected to a locking mechanism 5.
  • the gear assembly 1 forms an electromotive actuator, which is used, for example, to implement an actuating movement in an automatic door closer or door opener.
  • the drive wheel 2 is rotatable about a drive axis 6, the linear rail 3 along a linear direction 7 arranged translationally or linearly displaceable. In a projection from above, the drive shaft 6 intersects the linear direction 7 at right angles.
  • the drive wheel 2 comprises two drive gear sections 8 a, b, in each of which a drive toothing is arranged with radially outwardly facing teeth.
  • the drive teeth sections 8 a, b do not extend fully around the drive axle 6, but are limited to a drive tooth angle, which occupies about 60 degrees in the present example.
  • the drive gear portions 9a, b are arranged offset from each other by 180 degrees.
  • the drive wheel 2 on each axial side of a drive locking portion 9 a, b which occupy a drive locking angle in each case in the direction of rotation.
  • the drive-locking sections 9a, b are offset relative to one another and to the drive-toothed sections 8a, b.
  • the drive locking sections 9 are each formed as a positive contour and each have on the radial outer sides of a circular arc-shaped active contour 10a, b, which is coaxial and concentric with the drive axis 6, wherein the radius of the circular arc-shaped active contour 10a, b corresponds to the distance to the drive axle 6 ,
  • the active contour 10 a, b is in each case formed as a flat material section, in particular as a sheet metal and / or metal and / or sintered section with a part-circular outer contour.
  • the drive gear sections 8a, b and the drive block sections 9a, b are arranged axially offset relative to one another in the axial direction relative to the drive axle 6.
  • the drive teeth sections 8a, b are arranged between the drive block sections 9a, b.
  • the linear rail 3 has an output gear portion 15 which is formed as a continuous output gear 1 1 with pointing in the direction of the drive wheel 2 output teeth. Further, the linear rail 3 comprises on each side of the output gear 1 1 a starboard 12 a, b, which is formed in this example as rails.
  • the Steuerborde 12 a, b are arranged parallel to the output gear 1 1.
  • output cut sections 13 a, b introduced as negative contours, which are formed as a circular arc counteracting contours 14 a, b and / or edge-side arcuate Aussparronne in the tax bills 12 a, b as a carrier and spaced apart from each other in the linear direction 7.
  • the gear assembly 1 forms a possible embodiment of a self-locking gear with integrated adjustment and locking unit.
  • the transmission consists of a drive wheel 2 and a linear output part, which is designed as the linear rail 3.
  • the linear output member has arranged centrally the continuous internal toothing as the output toothing 1 1 as it is e.g. is known by racks.
  • Two identically formed blocking contours are formed as tax aries 12 a, b arranged.
  • These blocking contours each have circular arc-shaped recesses as output cut-off sections 13 a, b, which are arranged at a certain distance from each other. Both blocking contours are arranged offset to each other by exactly half the distance of these recesses in the embodiment shown.
  • the drive wheel 2 has centrally a front toothing as a drive toothed portion which engages in the mounted position in the continuous center mounted on the linear output member output gear 1 1 and thus ensures the drive ratio.
  • This radial external toothing is formed only as a partial toothing, so that the toothing limited only to a certain area. This results in addition to the gearing itself as well a certain untoothed portion on the outside of the drive wheel 2.
  • Left and right of this partially toothed area - as well as the linear output part - the two locking contours as the drive locking portions 9a, b attached. These are exactly designed so that they can engage in the circular arc-shaped recesses on the linear output part.
  • Both locking contours (left / right side) are identical and in the example shown mounted offset by 180 °. Other versions are however also conceivable.
  • the locking contour of the drive wheel 2 meshes in the corresponding recesses on the locking contours of the linear output member, so the gear assembly 1 is in the locked state, and there is no linear output movement instead.
  • the untoothed portion of the output gear is positioned exactly so that engage in this period, no teeth of the drive in the rack, despite locked linear motion, the drive wheel continues to be rotated. This ensures that a drive phase is reached again after each lock phase.
  • the gear assembly 1 is shown in the locked state, wherein the drive locking portion 9a is in engagement with one of the output locking portions 13a.
  • the gear assembly 1 is positively locked, with a small pivoting movement about the drive shaft 6 to no displacement of the linear rail 3 relative to the drive wheel 2 leads.
  • the active contour 10a engages positively in the counteracting contour 14a.
  • the drive gear sections 8a, b are disengaged from the output gear 11.
  • the transmission assembly 1 is now in the transmission phase or in the drive state.
  • This state is shown in FIG. 2, wherein in the drive state the drive toothed section 8a engages the output toothing 11.
  • the drive block sections 9a, b are disengaged from the output block sections 13a, b.
  • FIG. 4 shows the gear arrangement in the adjoining movement phase, wherein engages in the drive state of the drive gear portion 8b in the output gear 1 1.
  • the drive block sections 9a, b are disengaged from the output block sections 13a, b.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Transmission Devices (AREA)

Abstract

Les étages de transmissions à roues droites se présentant sous forme de parties de transmissions comprennent généralement deux roues dentées droites, lesquelles s'engrènent l'une avec l'autre, l'une des roues dentées droites formant un entraînement et l'autre roue dentée droite formant une sortie. De cette manière, il est possible d'une part de multiplier ou de démultiplier un couple appliqué et/ou de transmettre le couple suivant un rapport de transmission de 1:1. Dans certaines applications, une transmission permanente, par exemple au sens d'une rotation sans fin de la sortie, n'est pas prévue. Au contraire, les transmissions de ce type servent de mécanisme pas à pas, un mouvement de réglage étant introduit par le biais de l'entraînement et transmis à un élément de réglage par le biais de la sortie, afin que cet élément de réglage adopte une position de réglage. L'invention concerne un ensemble de transmission (1) comprenant une roue d'entraînement (2), laquelle est disposée de manière rotative autour d'un axe d'entraînement (6) et laquelle comprend une partie de denture d'entraînement (8a, b) dans la direction périphérique, une partie de sortie, laquelle comprend une partie de denture de sortie (15), la partie de denture d'entraînement (8a, b) et la partie de denture de sortie (15) pouvant être amenées à s'engrener l'une avec l'autre par une rotation de la roue d'entraînement (2), de sorte que l'ensemble de transmission (1) soit dans un état d'entraînement, la roue d'entraînement (2) comprenant une partie de blocage d'entraînement (9a, b) et la partie de sortie comprenant une partie de blocage de sortie (13a, b), la partie de blocage d'entraînement (9a, b) et la partie de blocage de sortie (13a, b) pouvant être amenées à s'engrener l'une avec l'autre par une rotation supplémentaire de la roue d'entraînement (2), de sorte que l'ensemble de transmission (1) soit dans un état de blocage, la partie de sortie se présentant sous la forme d'un rail linéaire (3).
PCT/DE2017/100867 2016-11-18 2017-10-12 Ensemble de transmission à fonction de blocage WO2018091024A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016222715.7A DE102016222715A1 (de) 2016-11-18 2016-11-18 Getriebeanordnung mit Sperrfunktion
DE102016222715.7 2016-11-18

Publications (1)

Publication Number Publication Date
WO2018091024A1 true WO2018091024A1 (fr) 2018-05-24

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Application Number Title Priority Date Filing Date
PCT/DE2017/100867 WO2018091024A1 (fr) 2016-11-18 2017-10-12 Ensemble de transmission à fonction de blocage

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DE (1) DE102016222715A1 (fr)
WO (1) WO2018091024A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535943A (en) * 1968-12-05 1970-10-27 Us Navy Scale changing gear mechanism
GB2365944A (en) * 2000-08-14 2002-02-27 Llanelli Radiators Ltd Drive mechanism
DE102014209939A1 (de) 2014-05-26 2015-11-26 Schaeffler Technologies AG & Co. KG Getriebeanordnung mit Sperrfunktion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2210701A1 (de) * 1972-03-06 1973-09-13 Kieninger & Obergfell Zahnschaltwerk mit zylinderverriegelung
DE2848352A1 (de) * 1978-01-09 1979-07-12 Dieter Zoell Schrittschaltgetriebe
FR2636149B1 (fr) * 1988-09-02 1992-03-27 Merlin Gerin Dispositif de transmission a mouvement de rotation intermittent pour un mecanisme de telecommande d'appareillage electrique
DE102006040741A1 (de) * 2006-08-31 2008-03-06 Robert Bosch Gmbh Abtriebsschnittstelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535943A (en) * 1968-12-05 1970-10-27 Us Navy Scale changing gear mechanism
GB2365944A (en) * 2000-08-14 2002-02-27 Llanelli Radiators Ltd Drive mechanism
DE102014209939A1 (de) 2014-05-26 2015-11-26 Schaeffler Technologies AG & Co. KG Getriebeanordnung mit Sperrfunktion

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