WO2018113815A1 - Vis sans fin pour engrenage à vis sans fin, engrenage à vis sans fin pour dispositif à engrenage comprenant la vis sans fin et dispositif à engrenage pour dispositif d'entraînement à broche comprenant l'engrenage à vis sans fin - Google Patents

Vis sans fin pour engrenage à vis sans fin, engrenage à vis sans fin pour dispositif à engrenage comprenant la vis sans fin et dispositif à engrenage pour dispositif d'entraînement à broche comprenant l'engrenage à vis sans fin Download PDF

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Publication number
WO2018113815A1
WO2018113815A1 PCT/DE2017/100868 DE2017100868W WO2018113815A1 WO 2018113815 A1 WO2018113815 A1 WO 2018113815A1 DE 2017100868 W DE2017100868 W DE 2017100868W WO 2018113815 A1 WO2018113815 A1 WO 2018113815A1
Authority
WO
WIPO (PCT)
Prior art keywords
worm
worm gear
spindle
gear
thread tooth
Prior art date
Application number
PCT/DE2017/100868
Other languages
German (de)
English (en)
Inventor
Benjamin Wübbolt-Gorbatenko
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 WO2018113815A1 publication Critical patent/WO2018113815A1/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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/919—Positioning and locking mechanisms
    • B60N2/933—Positioning and locking mechanisms rotatable
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • 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
    • F16H27/045—Mechanism comprising a member with partially helical tracks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/919—Positioning and locking mechanisms
    • B60N2002/924—Positioning and locking mechanisms using electric or hydraulic energy

Definitions

  • the invention relates to a worm for a worm gear for engagement in a worm wheel of the worm gear.
  • the worm is formed as a rotary body with a lateral surface and has a thread tooth which extends around the lateral surface in one turn.
  • the invention further relates to a worm gear for a transmission device with the worm and with the worm wheel and a transmission device for a spindle drive device with the worm gear.
  • Worm gear for transmitting and / or translating torques to a spindle of a spindle drive device e.g. To adjust a vehicle seat in position, are already known from the prior art.
  • the document DE 103 08 028 A1 which probably forms the closest prior art, describes a spindle gear for an adjusting device in a motor vehicle seat with a spindle nut having an external toothing and an internal thread.
  • the internal thread is adapted to a longitudinal thread of the spindle.
  • the spindle gear has a worm wheel with an external toothing and a worm with teeth that run in several turns around the worm. The teeth of the worm are engaged with the external teeth of the spindle nut.
  • the invention has for its object to provide a functionally improved worm for a worm gear to engage in a worm wheel of the worm gear.
  • This object is achieved by a worm according to the features of claim 1, by a worm gear for a gear device with the worm and with the worm wheel according to the features of claim 6 and solved by a transmission device for a spindle drive device with the worm gear according to the features of claim 10.
  • Preferred or advantageous embodiments of the invention will become apparent from the dependent claims of the following description and / or the accompanying figures.
  • the worm is designed to engage in a worm wheel of the worm gear.
  • the worm has a thread tooth, in particular exactly one thread tooth on.
  • the screw is designed as a rotational body with a lateral surface.
  • the screw or the rotary body is designed as a circular cylinder.
  • the thread tooth extends in at least one turn, in particular in exactly one turn, around the lateral surface.
  • the thread tooth extends at least partially, preferably completely, in the winding around the lateral surface.
  • the thread tooth is placed on the lateral surface of the screw.
  • the thread tooth is, in particular over its entire length, from the lateral surface. As a result, it can engage with external threads and / or teeth of the worm wheel and in particular transmit drive torque to the worm wheel.
  • the thread tooth has a first open end and a second open end.
  • the two open ends are spaced from each other.
  • the two open ends are arranged offset to one another in a radial and / or axial direction.
  • the two open ends open in a straight line which runs parallel to a rotational axis of the screw as a rotational body.
  • the thread tooth has a first gradient region and a second gradient region.
  • the first gradient region preferably has a gradient and / or curvature.
  • the first course region rises in a course and / or in the turn around the outer surface of the worm.
  • the second course region in particular in the course and / or in the turn around the outer surface of the screw, is pitch-free, free from curvature and / or straight.
  • the second course region is divided into a first section and a second section.
  • the two sections extend without gradients and / or curvatures, in particular straight, around a partial area of the lateral surface of the first screw.
  • the first section open into the first open end and the second section into the second open end of the thread tooth.
  • first course region is arranged between the first section and the second section of the second course region and / or that connects the two sections with one another.
  • the worm gear comprises the worm according to the previous description and / or according to claims 1 to 5.
  • the worm gear also has the worm wheel.
  • the worm wheel is formed as a gear having a plurality of teeth. Alternatively or optionally in addition, it may have a matching external thread. Via the thread tooth, the worm meshes with the teeth of the worm wheel so that the drive torque can be transferred from the worm to the worm wheel.
  • the drive torque is preferably generated by a motor device associated with the worm gear and / or the gear device.
  • the drive torque can be transmitted to the worm gear via a drive shaft of the motor device.
  • the screw on the drive shaft can be arranged rotatably and / or storable and / or gear technology with the drive shaft connected so that they can rotate together with this.
  • the worm gear forms a first gear ratio of a total of two gear ratios of the transmission device.
  • the two gear ratios for the translation of the drive torque are formed on a spindle or on a threaded nut of a spindle drive device for an adjustable vehicle seat.
  • a further preferred implementation of the invention provides that the drive torque in the engagement of the thread tooth, in particular in the engagement of both course regions of the thread tooth, in the external thread of the worm wheel is continuously transferable and / or transmitted.
  • the worm wheel in particular during and / or after deactivation of the motor device, is arranged in a form-fitting manner between two teeth of the worm wheel during the engagement of at least one of the sections of the second course region.
  • the rotation of the worm and / or the worm wheel is characterized by e.g. automatically inhibited.
  • the worm advantageously has two functions.
  • a first function is the continuous transmission of the drive torque
  • a second function is the automatic inhibition of the transmission of the drive torque.
  • the automatic Inhibition is a transmission of the drive torque, in particular to the spindle or threaded nut of the spindle drive device blocked.
  • the escapement can be overcome so that the worm is rotated and the drive torque can be transferred back to the worm wheel.
  • Another object of the invention is a transmission device for a spindle drive device.
  • the transmission device comprises the worm gear according to the previous description and / or according to claims 6 to 9.
  • the transmission device can be integrated in the spindle drive device.
  • the transmission device is designed to translate the drive torque of the motor device to the spindle or to the threaded nut of the spindle drive device. This allows the spindle to be rotated.
  • the spindle drive device for transferring a vehicle seat for a vehicle is formed from a first adjustment position into at least one second adjustment position, in particular along at least one guide rail.
  • the nut is axially movable along the spindle by the transmission of the drive torque to the spindle.
  • the spindle has an external thread, in particular an external longitudinal thread
  • the threaded nut has an internal thread adapted to the external thread.
  • the nut is axially movable along a spindle during rotation and / or rotation of the spindle.
  • the vehicle seat is attached to the threaded nut, so that it can be transferred during the movement of the threaded nut along the spindle from the first adjustment position to the at least one second adjustment position.
  • the transmission device preferably has the first gear stage and the second gear stage.
  • the worm gear forms the first gear stage.
  • the first worm gear comprises the worm and the worm wheel, which are referred to below as the first worm and the first worm wheel.
  • the second transmission stage is preferably implemented and / or formed by a second worm gear with a second worm and a second worm wheel.
  • the second worm wheel is formed as a second gear having an external thread having a plurality of teeth.
  • the second screw is formed as a circular cylinder having a lateral surface.
  • the second worm on a suitable for the teeth of the second worm gear external thread.
  • the external thread of the second screw is integrated in the lateral surface of the second screw.
  • the second worm engages the second worm wheel via the teeth of the gearwheel and over the external thread in the lateral surface. Thereby, the driving torque can be transmitted from the second worm to the second worm wheel.
  • the transmission device comprises an intermediate shaft.
  • the intermediate shaft has bearing interfaces, via which it is rotatably and / or rotatably mounted in a transmission housing associated with the transmission device.
  • the intermediate shaft is transversely and / or angled, in particular at right angles, to the drive shaft of the motor device can be arranged.
  • the first worm wheel is rotatably mounted on the intermediate shaft of the transmission device.
  • the drive torque is transmitted from the drive shaft to the intermediate shaft and / or translated.
  • the second worm in particular together with the first worm wheel, rotatably mounted on the intermediate shaft.
  • the second worm wheel is rotatably on the spindle of the spindle drive device can be arranged and / or stored.
  • a torque of the intermediate shaft can be transmitted to the spindle and / or translated.
  • the two-stage transmission device can offer a functional extension.
  • the first and / or second gear stage it is possible by the first and / or second gear stage to block the spindle drive device self-locking against rotation of the spindle. This is the case in particular when the thread tooth engages with the first and second sections of the second course region in the teeth of the first worm wheel and is arranged in a form-fitting manner therein. In particular, this inhibits the rotation of the first worm wheel, and consequently the rotation of the spindle and the movement of the threaded nut along the spindle.
  • a self-locking locking device for locking the vehicle seat in the first and / or at least one second adjustment position can thus be provided by the first worm gear and / or by the transmission device.
  • a top perspective view of a spindle drive device with a motor device, a transmission device, a spindle and a threaded nut a top view of the spindle drive device of Figure 1; an axial plan view from the front of the spindle drive device 1 of Figure 1; a first worm wheel of a first worm gear of the transmission device of Figure 1;
  • FIG. 6 shows a section of the spindle drive device from FIG. 1, wherein a first course region of the thread tooth from FIGS. 5a-c is in engagement with the first worm wheel;
  • FIG. 7 shows a section of the spindle drive device from FIG. 1, wherein a second course region of the thread tooth from FIGS. 5a-c is in engagement with the first worm wheel.
  • FIG. 1 shows a perspective top view of a spindle drive device 1.
  • the spindle drive device is shown in a plan view from above.
  • Figure 3 shows the spindle drive device 1 in an axial plan view from the front.
  • the spindle drive device 1 has a spindle 2 and a threaded nut 3.
  • the spindle 2 has an external thread and the threaded nut 3 has a matching internal thread, so that the threaded nut 3 is moved axially along the spindle 2 during and / or by rotation and / or rotation.
  • a vehicle seat not shown, for a vehicle, in particular for an electric vehicle, can be fastened.
  • the vehicle seat can be adjusted from a first adjustment position to at least a second adjustment position in a fixed state on the threaded nut 3 as an anti-rotation lock for the threaded nut 3.
  • the spindle 2 can be arranged and / or stored in suitable bearings 17a, 17b in a guide rail, not shown, of the vehicle seat.
  • the guide rail is mountable in the vehicle so that it may extend in a longitudinal direction of the vehicle or in a transverse direction of the vehicle.
  • the spindle drive device 1 has a motor device 4, which is designed to generate a drive torque via a drive shaft 12 of the motor device 4.
  • the spindle drive device 1 has a transmission device 5 for transmitting the drive torque to the spindle 2.
  • the transmission device 5 translates and / or transmits the drive torque of the motor device 4 to the spindle 2 so that it is rotated and / or rotated and the threaded nut 3 is moved axially along the spindle 2.
  • the transmission device 5 is formed in two stages and comprises a first gear stage 6 and a second gear stage 7.
  • the first gear stage 6 is implemented by a first worm gear 8 and the second gear stage 7 by a second worm gear 9 and / or formed.
  • the transmission device 5 comprises an intermediate shaft 13 which is transversely, in particular angled, e.g. perpendicular to the drive shaft 12 extends.
  • the intermediate shaft 13 has at its two open ends bearing points 14a, 14b for rotatable mounting in a gear housing, not shown.
  • the first worm gear 8 comprises a first worm 10 and a first worm wheel 1 1, which engage with each other.
  • the first screw 10 is designed as a circular cylinder with a lateral surface 22 (FIGS. 5a-c). It is rotatably mounted on the drive shaft 12 of the motor device 4. Via the first worm 10, the drive torque can be transmitted to the intermediate shaft 13 and / or translated.
  • the first worm wheel 1 1 is rotatably mounted on the intermediate shaft 13.
  • the first worm gear is formed as a gear having a plurality of teeth 18.
  • the first screw 10 and the first worm wheel 1 1 form, material and / or non-positively connected to the corresponding shaft 12, 13, on which they are mounted.
  • the second worm gear 7 includes a second worm 15 and a second worm wheel 16 which are engaged with each other.
  • the second screw 15 is helical and / or circular cylindrical in shape and has an external thread.
  • the second worm wheel 16 is formed as a further gear with matching further teeth for the external thread of the second screw 15.
  • the external thread of the second worm 15 is engaged with the other teeth of the second worm wheel 16.
  • the second worm 15 is rotationally fixed, in particular together with the first worm wheel 1 1, arranged on the intermediate shaft 13.
  • the second worm wheel 16 is rotatably mounted on the spindle 2.
  • the second worm 15 and the second worm wheel 16 are positively, materially and / or non-positively connected to the intermediate shaft 13 and the spindle 2.
  • a torque of the intermediate shaft 13 can be transmitted to the spindle 2 and / or translated, so that the spindle 2 is rotated and / or rotated and the nut 3 is moved axially along the spindle 2.
  • the fastened to the threaded nut 3 vehicle seat can thus be transferred from the first adjustment position in the at least one second adjustment position.
  • the first screw 10 has exactly one thread tooth 19, which is designed to engage in the first worm wheel 1 1.
  • the thread tooth 19 extends in exactly one turn at least partially, preferably completely, around the lateral surface 22 of the first screw 10 around.
  • the thread tooth 19 is placed on the lateral surface 22 and protrudes from this. It has a first open end 23a and a second open end 23b.
  • the open ends 23a, 23b are spaced from one another.
  • the open ends 23a, 23b are arranged radially and / or axially offset from one another. They end in a plan view from the front on the first screw of FIG. 5c on a Line G offset from each other, wherein the straight line G is parallel to a rotation axis of the first screw 10. Further embodiments of the ends 23a, b are conceivable.
  • the thread tooth 19 comprises a first gradient region 20 and a second gradient region 21.
  • the first course region 20 of the thread tooth 19 has a slope and / or curvature.
  • the second course region 21 of the thread tooth 19 has no gradient and / or curvature in the course of the lateral surface 22; it is formed without pitch and / or without curvature.
  • the second course region 21 is subdivided into a first section 21a and into a second section 21b.
  • the second course region 21 in the two sections 21 a, 21 b gradient and / or curvature, in particular straight, formed.
  • the first portion 21 a opens into the first open end 23 a and the second portion 21 b in the second open end 23 b of the thread tooth 19.
  • the first course region 20 is disposed between the first portion 21 a and the second portion 21 b of the second course region 21 and connects both sections 21 a, 21 b with each other.
  • FIG. 6 shows a section of the spindle drive device 1 from FIG. 1 in a perspective plan view.
  • the first course region 20 of the thread tooth 19 is engaged with the first worm wheel 1 1.
  • the motor device 4 When the motor device 4 is activated, the first worm 10 rotates, with the result that the first wiper area 20 and the second wiper area 21 engage in alternation with the first worm wheel 11.
  • the first worm 10 transmits and / or translates the drive torque via the first worm wheel 1 1 on the intermediate shaft 13.
  • a torque of the intermediate shaft 13 is transmitted via the second worm gear 7 to the spindle 2 and / or translated, so that the vehicle seat together with the Threaded nut 3 is moved axially along this.
  • the second course region 21 of the thread tooth 19, in particular the first portion 21 a, is in engagement with the first worm wheel 1 1.
  • the engine device 4 is deactivated and the vehicle seat moved into one of the adjustment positions. Characterized in that the first course region 21 is formed without gradients and / or curvature, this is between two of the teeth 18 of the first worm wheel 1 1 is arranged. As a result, a rotation of the first worm 10 and the first worm wheel 1 1 is inhibited, so that the spindle 2 is no longer rotatable and / or rotatable. The vehicle seat is thereby locked in the respective adjustment position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne une vis sans fin (10) pour un engrenage (8) à vis sans fin destinée à être insérée dans une roue (11) à vis sans fin de l'engrenage (8) à vis sans fin, la vis sans fin (10) étant réalisée sous la forme d'un corps rotatif pourvue d'une surface extérieure (22), la vis sans fin (10) présentant une dent de filet (19) qui s'étend autour de l'enveloppe extérieure (22) de manière à former une spire, la dent de filet (19) présentant une première extrémité ouverte (23a) et une deuxième extrémité ouverte (23b).
PCT/DE2017/100868 2016-12-19 2017-10-12 Vis sans fin pour engrenage à vis sans fin, engrenage à vis sans fin pour dispositif à engrenage comprenant la vis sans fin et dispositif à engrenage pour dispositif d'entraînement à broche comprenant l'engrenage à vis sans fin WO2018113815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016124765.0 2016-12-19
DE102016124765.0A DE102016124765A1 (de) 2016-12-19 2016-12-19 Schnecke für ein Schneckengetriebe, Schneckengetriebe für eine Getriebeeinrichtung mit der Schnecke und Getriebeeinrichtung für eine Spindelantriebsvorrichtung mit dem Schneckengetriebe

Publications (1)

Publication Number Publication Date
WO2018113815A1 true WO2018113815A1 (fr) 2018-06-28

Family

ID=60164560

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100868 WO2018113815A1 (fr) 2016-12-19 2017-10-12 Vis sans fin pour engrenage à vis sans fin, engrenage à vis sans fin pour dispositif à engrenage comprenant la vis sans fin et dispositif à engrenage pour dispositif d'entraînement à broche comprenant l'engrenage à vis sans fin

Country Status (2)

Country Link
DE (1) DE102016124765A1 (fr)
WO (1) WO2018113815A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313172A (en) * 1961-11-03 1967-04-11 Ulrich Bros Inc Worms for worm and worm wheel assembly and method of forming the same
DE1497254A1 (de) * 1966-03-28 1969-03-27 Siemens Ag Schaltgetriebe mit sich kreuzenden Radachsen fuer feinmechanische Geraete
DE10308028A1 (de) 2003-02-24 2004-09-02 C. Rob. Hammerstein Gmbh & Co. Kg Spindelgetriebe für Verstellvorrichtungen in Kraftfahrzeugsitzen
WO2015113633A1 (fr) * 2014-01-31 2015-08-06 Schukra Gerätebau Gmbh Dispositif de réglage de longueur de coussin de siège et procédé de réglage d'une longueur de coussin de siège

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1750845U (de) 1957-06-24 1957-08-22 Norddeutsche Mende Rundfunk G Einrichtung zum selbsttaetigen unterbrechen des ladestromes an akkumulatorenbatterien.
US5960668A (en) 1996-10-25 1999-10-05 National Science Council Indexing mechanism using pairs of radially disposed rollers engaged between adjacent cam ribs
DE202007008564U1 (de) 2007-06-20 2008-10-23 Taktomat Kurvengesteuerte Antriebssysteme Gmbh Kurvengesteuertes Schrittgetriebe
DE102014213001A1 (de) 2014-07-04 2016-01-07 Schaeffler Technologies AG & Co. KG Aktuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313172A (en) * 1961-11-03 1967-04-11 Ulrich Bros Inc Worms for worm and worm wheel assembly and method of forming the same
DE1497254A1 (de) * 1966-03-28 1969-03-27 Siemens Ag Schaltgetriebe mit sich kreuzenden Radachsen fuer feinmechanische Geraete
DE10308028A1 (de) 2003-02-24 2004-09-02 C. Rob. Hammerstein Gmbh & Co. Kg Spindelgetriebe für Verstellvorrichtungen in Kraftfahrzeugsitzen
WO2015113633A1 (fr) * 2014-01-31 2015-08-06 Schukra Gerätebau Gmbh Dispositif de réglage de longueur de coussin de siège et procédé de réglage d'une longueur de coussin de siège

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