Classifications

• • 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
• • 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
  • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
  • B60N2/2231—Worm and worm gear articulations
• • 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
  • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
  • B60N2/02246—Electric motors therefor
• • 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
• • 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
  • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
  • B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
  • B60N2/2252—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear
• • 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
  • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
  • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
  • F16H37/04—Combinations of toothed gearings only
  • F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
• • 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
  • F16H1/00—Toothed gearings for conveying rotary motion
  • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
  • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
• • 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
  • Y10T74/1836—Rotary to rotary

Definitions

• the present invention relates to a Wegkomponenten- adjustment, a comprehensive this seat, and a method for adjusting a seat component.
• the present invention relates to a Wegkomponenten- Versteil device which is adapted to adjust a cable, and a corresponding seat.
• adjustable seat components which is or will be adjusted by electric drive means.
• the adjustment is often done via cable or Bowden cables.
• the number of such adjustable seat components has increased.
• With the number of integrated electrical functions in the seat often increases the number of adjustment devices required for these seat components.
• the increase in adjustable seat components leads to a need for adjusting devices with a compact installation space.
• An object of the present invention is to provide an improved seat component adjustment device.
• it is an object of the present invention to provide a seat component adjusting device with a small installation space.
• Another object of the present invention is to provide such a seat component adjusting device which simultaneously has a high gear ratio.
• Another object of the invention is to provide an improved seat with an adjustable seat component.
• it is an object to provide such a seat, which has a seat component adjustment device with a small installation space.
• Yet another object of the present invention is to provide an improved method for adjusting a seat component.
• it is an object to provide such a method, in which the installation space required for a seat component adjustment device is relatively small and / or the transmission ratio of the seat component adjustment device is relatively large.
• a seat component adjusting device comprises rotary drive means, a worm gear, an eccentric gear and a rotary member for coupling to a tension member, wherein the worm gear is coupled on the input side to the rotary drive means and the output side to the eccentric gear, and wherein the eccentric gear is further coupled on the output side by coupling means to the rotary member wherein the coupling means are adapted to convert a movement of the eccentric gear in a rotational movement of the rotary member.
• the tension element is coupled to the rotary element.
• the tension element is a flexible tension element, so that an adjustment of the tension element by winding or unwinding of the tension element on or from the rotary member is possible.
• the worm gear comprises a coupled to the rotary drive means worm and a rotatably mounted worm wheel
• the eccentric gear comprises a non-rotatably mounted ring gear with an internal gear and a rotatable in the ring gear arranged rotor, which is in engagement with the ring gear.
• an eccentric is provided on the worm wheel, which is designed to unroll the rotor along the internal toothing of the ring gear.
• the worm gear preferably has a gear ratio in the range of 15 to 25, and the eccentric gear has a gear ratio in the range of 10 to 20. More preferably, the number of teeth of the worm is 1 or 2, and the number of teeth of the worm wheel assumes a value in the range of 15 to 50. More preferably, the number of teeth of the rotor assumes a value in the range of 20 to 40. Even more preferably, the number of teeth of the internal toothing of the ring gear is larger by 1 to 3 than that of the rotor. By such a choice of numbers of teeth, a high transmission ratio is realized with a simultaneously high degree of coverage of the eccentric stage.
• the rotary drive means preferably comprise an electric motor. As a result, a slight controllability of the seat component adjustment device is achieved. However, a manual operation is conceivable, wherein the rotary drive means may comprise a handwheel or the like.
• the coupling means preferably comprise first coupling elements provided on the eccentric gear and second coupling elements provided on the rotary element.
• the first coupling elements may comprise a plurality of pins and the second coupling elements may comprise a plurality of recesses, the pins and the recesses being engaged in pairs.
• the first coupling elements may comprise a plurality of recesses and the second coupling elements may comprise a plurality of pins, the pins and the recesses being engaged in pairs.
• the eccentric gear comprises a rotor and a ring gear
• the first coupling elements may be provided on the rotor.
• a diameter of a pin is selected to be smaller by the difference of the pitch circle diameter of the ring gear and the rotor than a diameter of a recess with which the pin is engaged.
• the recesses and the pins each have a cylindrical outer circumference.
• the pins and the corresponding recesses represent a realization of the coupling means with simple mechanical elements.
• the worm, the worm wheel, the rotor, and the rotary member are disposed in a housing, whereby the seat component adjustment device can be installed as a module.
• a portion of the ring gear can also form a portion of the housing, whereby the construction of the Wegkomponenten- adjustment is even more compact and / or the number of required components is reduced.
• An internal toothing can also be provided on a section of the housing so that a section of the housing acts as a hollow wheel of the eccentric gear.
• the flexible tension element may in particular be a cable or Bowden cable.
• one end of the wire or steel cable of the Bowden cable is then coupled to the rotary element.
• the seat component adjusting device comprises a housing, this can furthermore be set up so that a jacket of the Bowden cable can be suspended on a section of the housing.
• the tension element may also be a toothed rack, the toothing of which is in engagement with a toothing provided on the rotary element.
• the rack may be configured for direct coupling with a seat component to be adjusted.
• the rack may be configured to engage with a flexible tension member, e.g. coupled to a wire, which in turn is coupled in use directly to the seat component to be adjusted.
• a seat according to the invention comprises an adjustable seat component and a seat component adjustment device according to the invention, wherein the tension element is coupled to the adjustable seat component in order to actuate it.
• the tension element can be coupled directly or via one or more other fasteners with the adjustable seat component.
• the seat component adjustment device has a small installation space and can thus be easily accommodated on or in the seat.
• the adjustable seat component may be any seat component, in particular a lumbar support or a headrest.
• the lumbar support can be configured and coupled with the seat component adjustment device such that a height adjustment and / or a curvature adjustment of the lumbar support is achieved by the seat component adjustment device.
• the headrest may be configured and coupled with the seat component adjustment device such that a height adjustment and / or a tilt adjustment of the headrest is achieved by the seat component adjustment device.
• the adjustable seat component can each be designed such that it depends on a free length of the flexible tension member, i. in response to a degree of winding of the flexible tension member by the Wegkomponenten- adjustment, is adjusted.
• the seat component adjusting device Due to the high transmission ratio, which can be achieved with the seat component adjusting device according to the invention, a reliable adjustment of the adjustable seat component can be achieved. Furthermore, the self-locking of the seat component adjustment device prevents unintentional adjustment of the seat component under a load.
• a method for adjusting a seat component comprises the step of changing the position of a tension element with a seat component adjusting device according to the invention as a function of a rotation angle of the rotary element thereof in order to adjust the seat component as a function of the angle of rotation of the rotary element.
• the angle of rotation of the rotary element is determined by the angle between any starting position of the rotary member and a current position of the rotary member.
• the tension element is a flexible tension element
• the step of changing the position of the tension element is realized by winding or unwinding the flexible tension element on or from the rotary element in order to adjust the seat component depending on the degree of winding.
• the seat component may be a headrest.
• the method according to the invention can in particular comprise the steps of adjusting a height of the headrest and / or adjusting an inclination of the headrest, in each case as a function of the position of the tension element or of the degree of winding of the flexible tension element.
• a headrest can be adjusted in terms of their various degrees of freedom by the inventive method.
• the seat component can also be a lumbar support.
• the method according to the invention can in particular comprise the steps of adjusting a height of the lumbar support and / or adjusting a curvature of the lumbar support, depending in each case on the position of the tension element or on the degree of winding of the flexible tension element.
• a lumbar support can be adjusted with regard to its different degrees of freedom.
• the seat component adjusting device according to the invention and the corresponding method can be used in a large number of different seats.
• the seat component adjustment device according to the invention and the corresponding method will be used in vehicle seats, the compact installation space of the seat component adjustment device according to the invention allowing easy accommodation thereof in or on the vehicle seat.
• a seat according to the invention can be any type of seat which has an adjustable seat component, in particular a vehicle seat or an office furniture.
• the expected field of application of the present invention is correspondingly broad.
• preferred exemplary embodiments are explained in detail with reference to the figures.
• Fig. 1 is a schematic cross-sectional view of a first embodiment of a seat component adjusting device according to the invention.
• Fig. 2 is an exploded perspective view of a second exemplary embodiment of a seat component adjusting device according to the invention.
• Fig. 3 is an exploded perspective view of the seat component adjusting device shown in Fig. 2 from a different angle.
• FIG. 4 is a cross-sectional view of the seat component adjusting device shown in FIG. 2.
• FIG. 4 is a cross-sectional view of the seat component adjusting device shown in FIG. 2.
• Fig. 5 is a perspective view of the seat component adjusting device shown in Fig. 2 in an assembled state.
• the seat component adjustment device comprises a combination of a worm gear and an eccentric gear, which are coupled together, wherein the eccentric gear is also coupled to a rotatably mounted pulley or pulley 17.
• the worm gear comprises a worm 11 and a worm wheel 12, and the eccentric gear comprises a ring gear 14 with an internal gear and a rotor 13 with an external gear, wherein the rotor 13 is in engagement with the ring gear 14.
• the worm 11 is driven by an electric motor (not shown in FIG. 1).
• an eccentric 16 is provided, which describes a circular movement with a radius h when the flywheel gear is driven by the electric motor.
• a portion of the eccentric 16 is disposed in a central recess of the rotor 13. When the eccentric 16 performs its circular motion, the rotor 13 is unrolled inside the ring gear 14. In this case, the rotor 13 performs a tumbling motion, in which it rotates about its axis and simultaneously moves along an inner circumference of the ring gear 14.
• the seat component adjustment device comprises coupling means, which in the exemplary embodiment of FIG. 1 comprise a plurality of pins 22 'provided on the rotor 13 and an equal number on the sheave 17 provided recesses 21 ', wherein at least a portion of each pin 22' within the corresponding recess 21 'is arranged.
• the pins 22 'and the recesses 21' have a cylindrical outer periphery.
• a flexible tension member 45 With the pulley one end of a flexible tension member 45 is coupled.
• the flexible tension member 45 is for coupling with an adjustable seat component, e.g. a headrest or lumbar support, designed.
• the flexible tension element 45 may in particular be a Bowden cable, one end of the wire rope of the Bowden cable being fastened to the cable pulley 17.
• the sheath or the jacket of the Bowden cable is supported on the housing (not shown in FIG. 1) of the adjusting device. Upon rotation of the sheave 17, a portion of the wire rope of the Bowden cable is wound on the sheave 17 or unwound from the sheave 17, depending on the direction of rotation.
• the flexible tension member 45 is further typically near the other end, which is not coupled to the sheave 17, with an adjustable seat component, e.g. a headrest or a lumbar support, coupled.
• the adjustable seat component is configured to be adjusted depending on the degree of winding of the flexible tension member 45 so that in use, by winding or unwinding the flexible tension member 45 on the sheave or pulley, the adjustment of the adjustable seat component is achieved ,
• the coupling means which are provided for converting the tumbling motion of the rotor 13 into a rotational movement of the sheave 17, realized in the present case by provided on the rotor 13 pin 22 'and on the sheave 17 recesses 21' are realized, numerous modifications of these Out- Design possible, as will be explained with reference to Fig. 2-5 for a second embodiment of the invention Wegkomponenten- adjustment.
• the second embodiment differs from the first in that a coupling of the rotor 13 with the pulley 17 is realized by recesses 21 provided on the rotor 13 and by pins 22 provided on the pulley 17.
• the essential components of the Wegkomponenten- adjustment in particular the worm 11, the worm wheel 12, the rotor 13, the ring gear 14, the pulley 17 and the flexible tension member 45 and their action and operation are identical to the first embodiment ,
• the rotor 13 comprises a central recess in which a bearing 34 is arranged for receiving at least a portion of the eccentric 16 provided on the worm wheel 12.
• the rotor 13 Upon rotation of the worm wheel 12, the rotor 13 is caused by this arrangement in a tumbling motion, as described above.
• the tumbling motion of the rotor 13 is converted by the recesses 21 and pin 22 in a pure rotational movement of the pulley 17, as also described above.
• the principal mode of operation of the coupling means formed by the recesses 21 and the pins 22 for coupling the rotor 13 to the cable pulley 17 becomes particularly clear from the cross-sectional view of FIG. 4.
• the worm 11, the worm wheel 12, the rotor 13, and the pulley 17 are housed in a housing which comprises first to third housing sections 31 a-31 c.
• the electric motor 10 is fastened with screws 32 or any other fastening elements on the third housing portion 31c, wherein a bearing 33 is provided for the shaft of the electric motor.
• the ring gear 14 is configured such that an outer portion of the ring gear 14 acts as a section of the housing 31. Further, the ring gear is integrally formed with the third housing portion 31 c.
• the pulley 17 is rotatably supported by the bearing 34 on the first housing portion 31a. As best seen in Fig.
• the first housing portion has a recess in the form of a part-circular groove 43, with which a provided on the pulley 17 projection 42 is engaged.
• the groove 43 and the projection 42 allow the definition of a limited angular range over which the sheave 17 can rotate.
• the angular range over which the pulley 17 can rotate can be easily adjusted.
• a recess 18 which is adapted, in use, to receive the coiled portion of the flexible tension member coupled to the sheave 17, e.g. of the wire rope of a Bowden cable.
• a portion 41 for mounting the jacket of the Bowden cable is integrally formed.
• the adjustable seat component is configured to move in response to a free length of the wire rope of the Bowden cable, i. depending on the degree of winding of the flexible tension element to be adjusted.
• Typical examples of adjustable seat components are lumbar supports and headrests, as used in vehicle seats.
• the seat component adjustment device according to the invention can be used, for example, for adjusting a height or curvature of the lumbar support or for adjusting a height or inclination of the headrest.
• the areas of application of the seat component adjustment device are not limited thereto, but include seats with arbitrary adjustable components.
• the recesses 21 and 21 ' are provided either on the rotor 13 or on the pulley 17 and the pins 22 and 22' are provided on the other element, for example, on the rotor 13, a first number of pins and a second number of recesses are provided, which are in pairs with a first number of recesses and a second number of pins on the hub in engagement.
• the number of pins 21 and the corresponding recesses 22 is six. However, this number can also be varied slightly. In an advantageous embodiment, the number of pins and corresponding recesses each greater than or equal to four.
• Diameter of all recesses should not be identical. Rather, the diameters may vary as long as the above-described relation between the diameters of the pin and the recess is maintained for each pair of a pin and a corresponding recess.
• the configuration of the housing described with reference to FIGS. 2-5 can be easily modified. While in this embodiment, the ring gear 14 is integrally formed with the third housing portion 31 c and formed so that an outer portion of the ring gear forms a portion of the housing 31, the ring gear 14 may also be provided separately from the housing and mounted within the housing. Also, the housing could be made up of less than three sections. For example, the first and third housing sections 31a, 31c could also be formed integrally.
• the tension member was a flexible tension member, in particular a Bowden cable
• the tension member may also be a rigid body, in particular a rack.
• a rack In the case of a rack is on the rotating element a toothing provided, which is in engagement with the toothing of the rack.
• the rack Upon rotation of the rotary member, the rack is translationally shifted, ie, the position of the rack is changed.
• the rack may be coupled in use directly with the seat component to be adjusted.
• a wire pull may be attached to the rack and to the seat component to be adjusted to couple it.
• the seat component adjustment device according to the invention with an electric motor 10 and the worm gear, the eccentric gear and the pulley, which are accommodated in the housing 31, has a compact installation space.
• a high transmission ratio can be achieved by the combination of worm gear and eccentric gear.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• General Engineering & Computer Science (AREA)
• Seats For Vehicles (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38008097

Family Applications (1)

Country Status (8)

Families Citing this family (36)

Family Cites Families (23)

• 2005
  • 2005-12-01 DE DE102005057462A patent/DE102005057462B4/de not_active Expired - Fee Related
• 2006
  • 2006-11-27 CA CA002627243A patent/CA2627243A1/en not_active Abandoned
  • 2006-11-27 US US12/093,129 patent/US20090045661A1/en not_active Abandoned
  • 2006-11-27 WO PCT/EP2006/011364 patent/WO2007062792A2/de active Application Filing
  • 2006-11-27 KR KR1020087011888A patent/KR20080065663A/ko not_active Application Discontinuation
  • 2006-11-27 CN CNA2006800417070A patent/CN101356073A/zh active Pending
  • 2006-11-27 EP EP06818854A patent/EP1954521A2/de not_active Withdrawn
  • 2006-11-27 JP JP2008541657A patent/JP2009517105A/ja not_active Withdrawn

Non-Patent Citations (1)

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