WO2001044009A1 - Mecanisme ajustable - Google Patents

Mecanisme ajustable Download PDF

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Publication number
WO2001044009A1
WO2001044009A1 PCT/DE1999/003978 DE9903978W WO0144009A1 WO 2001044009 A1 WO2001044009 A1 WO 2001044009A1 DE 9903978 W DE9903978 W DE 9903978W WO 0144009 A1 WO0144009 A1 WO 0144009A1
Authority
WO
WIPO (PCT)
Prior art keywords
gears
internal
gear
teeth
planet gears
Prior art date
Application number
PCT/DE1999/003978
Other languages
German (de)
English (en)
Inventor
Wolfgang Lortz
Original Assignee
Wolfgang Lortz
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 Wolfgang Lortz filed Critical Wolfgang Lortz
Priority to PCT/DE1999/003978 priority Critical patent/WO2001044009A1/fr
Publication of WO2001044009A1 publication Critical patent/WO2001044009A1/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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/46—Systems consisting of a plurality of gear trains each with orbital gears, i.e. systems having three or more central 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
    • B60N2/22—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
    • B60N2/2251—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 with gears having orbital motion, e.g. sun and planet gears
    • 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
    • F16H2001/2881—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two axially spaced central gears, i.e. ring or sun gear, engaged by at least one common orbital gear wherein one of the central gears is forming the output

Definitions

  • the invention relates to an adjustment gear, in particular for the continuous adjustment of the inclination of the back of a vehicle seat, according to the principle of a double planetary gear consisting of a sun gear, planet gears and two internal gears which have different numbers of teeth.
  • gearboxes for continuously adjusting the inclination of the backrests of vehicle seats.
  • a sensitive, continuous and play-free adjustment should be possible.
  • the gears should withstand the forces that occur in the event of a high rear load, for example in the event of a crash with a restraint system integrated into the backrest, and at the same time block the forward displacement of the backrest.
  • DE-PS 30 13 304 represents an extension.
  • the eccentric is divided and adapts flexibly to the load-bearing toothing as a result of a spring force. This avoids overdetermination of the system, which otherwise leads to play or jamming of the backrest adjuster due to manufacturing tolerances.
  • Another construction is known from DE-PS 26 60 395, in which several pins engage in holes in a counter plate. Because of the eccentricity, the holes are larger than the bolts. It is driven by a planetary system. The blocking is also done by self-locking. However, this design has a larger game in the transmission gear, which does not meet the required safety criteria.
  • the invention seeks to remedy this.
  • the invention has for its object to provide an adjustment gear, in particular for continuously adjusting the inclination of the backrest of a vehicle seat, which is adjustable under load, runs smoothly and whose blocking does not depend solely on the laws of friction in the case of backward loading of the backrest.
  • this object is achieved in that the sun gear consists of two gears that are firmly coupled to one another and the planet gears each consist of two gears that are firmly coupled with one another, and that the center distance and the operating pressure angle between the gears of the piano wheels and the internal teeth and the gears the planet gears and the internal toothing are the same.
  • an adjustment gear in particular for the continuous adjustment of the inclination of the backrest of a vehicle seat, which is adjustable under load and at the same time runs cleanly.
  • the transmission is quiet.
  • the blocking in the case of high rear load on the backrest does not depend on the friction laws of the teeth. Rather, the circumferential forces on the internal gears are directed in the same amount and in opposite directions. This balance of forces is designed in such a way that the planetary wheels act like “feather keys” in the event of a crash. This ensures the blocking effect in the event of rear loading, as is the case in the event of a crash.
  • the teeth of the sun gear, planet gears and internal teeth are helical gears.
  • the helical gears are advantageously arranged in opposite directions, so that an arrow gearing results in the view. This configuration ensures that the forces acting on the toothing do not cause any moment, since the horizontal portions of the forces cancel each other out.
  • the internal gears are pressed against each other, which increases the stability of the adjustment gear and makes it impossible to open the two fitting brackets in the event of a crash.
  • Figure 1 is a perspective view of a vehicle seat with adjustment mechanism.
  • Figure 2 shows the exploded view of an adjustment gear.
  • 3 shows the exploded representation of an adjusting gear in a different design (serration);
  • FIG. 4 shows the schematic representation of a DUPLEX adjustment gear
  • 5 shows a three-dimensional, partial representation of a DUPLEX planetary gear with acting forces with rearward load in a straight-toothed design
  • FIG. 6 shows a schematic representation of the flow of force in the event of a crash with arrows.
  • the vehicle seat shown as an exemplary embodiment in FIG. 1 has a seat surface A.
  • a backrest B is arranged on the seat surface A, the inclination of the seat surface A being infinitely adjustable by means of an adjustment mechanism C.
  • a height-adjustable headrest D is provided at the end of the backrest B facing away from the seat surface A.
  • the adjustment mechanism C is only schematic in FIG. represented table. It has a handwheel E, with the aid of which the inclination adjustment of the backrest B in relation to the seat surface A is carried out by rotary actuation.
  • a further adjustment mechanism F can be attached to the other side of the vehicle seat, which can be actuated by means of a transmission rod G in synchronism with the adjustment mechanism C by means of the handwheel E.
  • the structure of the adjustment mechanism F essentially corresponds to that of the adjustment mechanism C.
  • the adjustment mechanism C is designed in the form of an adjustment gear.
  • the adjusting gear works on the principle of a double planetary gear (DUPLEX planetary system). It has a sun gear 1, three planet gears 2 and two internal gears 3, 4.
  • the internal gears 3, 4, which can also be referred to as ring gears, are arranged in fitting brackets 5, 6.
  • the bracket 5 is mounted on the side of the backrest B, the bracket 6 on the side of the seat A.
  • the sun gear 1 is arranged against rotation on a shaft (not shown).
  • the shaft In the assembled state of the adjusting mechanism, the shaft is connected to the handwheel E shown in FIG. 1.
  • the shaft In the exemplary embodiment according to FIG. 1, in which, in addition to the adjusting mechanism C, an adjusting mechanism F is also provided on the other side of the seat is, the shaft continues on its side facing away from the handwheel E in the form of the transmission rod G.
  • the sun gear 1 consists of two gears 1 1, 1 2 which are firmly coupled to one another.
  • the fixed coupling can be achieved in a variety of ways.
  • the gearwheels 1 1, 1 2 forming the sun gear 1 are coupled to one another in a rotationally secure manner with the aid of four pins 1 3, which pass through both gear wheels 1 1, 1 2.
  • welding or soldering or gluing is possible, for example.
  • one-piece production is possible, for example by extrusion or injection molding.
  • the gears 1 1, 1 2 each have the same number of teeth. In the exemplary embodiment, twelve teeth are provided on the gears 1 1, 1 2.
  • Each planet gear 2 circle around the sun gear 1.
  • Each planet gear 2 consists of two gear wheels 21, 22 (DUPLEX system).
  • the gears 21, 22 are also firmly coupled to one another.
  • the fixed coupling takes place with the aid of pins 23, which are inserted into the gearwheels 21, 22 and enable the fixed coupling.
  • the fixed coupling can also take place without pins, as is shown in the exemplary embodiment according to FIG. 3.
  • the gears 21 can be glued or welded or soldered to the gears 22.
  • the gears 21 and 22 each have the same number of teeth. In the exemplary embodiment, twelve teeth are provided on each of the gear wheels 21, 22.
  • the planet gears 2 simultaneously engage in the rotation around the sun gear 1 in the internal gears 3, 4.
  • the gears 21 engage in the internal gears 3; the gears 22 into the internal toothing 4.
  • the internal toothing 3 and 4 each have different numbers of teeth.
  • the internal toothing 3 has thirty-nine teeth
  • the internal toothing 4 has thirty-six teeth.
  • the center distance between the gears 21 of the planet gears 2 and the internal teeth 3 and the gears 22 of the sun gears 2 and the internal teeth 4 are the same size.
  • the operating pressure angle ⁇ w of the gears 21 of the planet gears 2 with the internal toothing 3 is also the same as the operating pressure angle ⁇ w of the gear wheels 22 of the planet gears 2 with the internal toothing 4.
  • the internal gears 3 and 4 are provided in fitting brackets 5 and 6.
  • the internal toothings 3, 4 are incorporated into the material from which the mounting brackets 5, 6 are made.
  • the internal toothings 3, 4 are designed in the form of ring gears which are inserted into the fitting brackets 5, 6.
  • notches in the fitting brackets 5, 6 can be correlated with lugs formed on the ring gears. explosion.
  • connection is possible, for example by means of laser welding.
  • the fitting tabs 5, 6 are made of sheet metal in the exemplary embodiment. Under certain circumstances, the fitting brackets 5, 6 can also be integrated directly into the backrest cheek or seat connection. Manufacture from other materials is possible.
  • the planet gears 2 are loosely arranged between the sun gear 1 and the internal gears 3, 4. They are loosely inserted into the internal gears 3, 4 during assembly of the gear and, after assembly, are held by the sun gear 1 and the internal gears 3, 4 in such a way that circling around the sun gear 1 is possible while simultaneously engaging in the internal gears 3, 4.
  • the advantage of this "loose" arrangement of the planet gears 2 in the gearbox is that any distortion that may occur in the mounting brackets 5, 6 does not disturb the tooth geometry, since the piano wheels 2 in principle represent a constant thickness.
  • the operating pressure angle ⁇ w and consequently the direction of force engagement can be influenced.
  • the base circles can be influenced by the generator angle ⁇ 0 . Taking these regularities into account, despite different modules m and different generator angles ⁇ 0 and different profile displacement factors x of the individual planetary systems in the coupled planetary system achieve the same operating pressure angle ⁇ w and thus constant directions of force on the mounting brackets 5, 6. If the operating pressure angles ⁇ w are identical, the forces intervene at the same angle.
  • the helical gearing is oriented in opposite directions with respect to the sun gear 1 from gear 1 1 to gear 1 2, with respect to the planet gears 2 from the gears 21 to 22 and from the internal gearing 3 to the internal gearing 4, so that in principle there is an arrow -Dentangling results ( Figures 3 and 6).
  • the horizontal portions of the forces parallel to one another are raised by the helical toothing of the individual wheels, which results in an arrow toothing in its entirety Axial direction.
  • the tabs are prevented from opening.
  • the horizontal portions of the forces are directed against one another parallel to the axial direction, so that the tabs 5, 6 are pressed against one another and opening is not possible. In the event of a crash, this means that a large part of the energy is used to press the two brackets against each other and the full force applied is not used to shear the gearing (breakage of force).

Abstract

L'invention concerne un mécanisme ajustable, s'utilisant notamment pour ajuster en continu l'inclinaison du dossier d'un siège de véhicule. Le mécanisme fonctionne selon le principe d'un différentiel planétaire double et comprend une roue planétaire (1), des satellites (2), ainsi que deux dentures intérieures (3,4). Lesdites dentures intérieures (3,4) présentent différents nombres de dents. La roue planétaire (1) comprend deux roues dentées (11,12) couplées mutuellement de manière fixe. Les satellites (2) comprennent chacun deux roues dentées (21,22) couplées mutuellement de manière fixe. L'empattement et l'angle effectif de pression apparente entre les roues dentées (21) des satellites (2) et la denture intérieure (3), ainsi qu'entre les roues dentées (22) des satellites (2) et la denture intérieure (4) sont identiques.
PCT/DE1999/003978 1999-12-13 1999-12-13 Mecanisme ajustable WO2001044009A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE1999/003978 WO2001044009A1 (fr) 1999-12-13 1999-12-13 Mecanisme ajustable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1999/003978 WO2001044009A1 (fr) 1999-12-13 1999-12-13 Mecanisme ajustable

Publications (1)

Publication Number Publication Date
WO2001044009A1 true WO2001044009A1 (fr) 2001-06-21

Family

ID=6918869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003978 WO2001044009A1 (fr) 1999-12-13 1999-12-13 Mecanisme ajustable

Country Status (1)

Country Link
WO (1) WO2001044009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220402407A1 (en) * 2019-10-31 2022-12-22 Keiper Seating Mechanisms Co., Ltd. Fitting for a vehicle seat

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566179A (fr) 1967-11-21 1969-05-09
DE1297496B (de) 1966-04-09 1969-06-12 Putsch Friedrich Wilhelm Gelenkbeschlag fuer Sitze mit verstellbarer Lehne, insbesondere Kraftfahrzeugsitze
US3776067A (en) * 1972-09-19 1973-12-04 Curtiss Wright Corp Planetary gear transmission
DE2604489A1 (de) 1975-02-07 1976-08-19 Ihw Eng Ltd Sitzlehnen-einstellvorrichtung
FR2307495A1 (fr) 1975-04-18 1976-11-12 Faure Bertrand Perfectionnements aux articulations de sieges
DE2660395B1 (de) 1976-03-09 1980-08-14 Keiper Automobiltechnik Gmbh Drehbeschlag zum Verstellen des Neigungswinkels von Rueckenlehnen an Sitzen
DE3013304A1 (de) 1980-04-05 1981-10-15 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Stellvorrichtung fuer sitze und fenster, insbesondere von kraftfahrzeugen
DE3201309A1 (de) 1982-01-18 1983-07-28 Manfred Ing.(grad.) 4050 Mönchengladbach Lortz Zentrisch, kontinuierlich, moment- und kraeftefreier verstellmechanismus zur positionierung der sitzhoehe, sitzdistanz sowie der rueckenlehne fuer gebrauchsmoebel und automobilsitze
US4882943A (en) * 1987-12-03 1989-11-28 A&M Cousin Backlash-free reducing mechanism, particularly usable for setting various parts of a seat of an automobile vehicle
US5098359A (en) * 1989-08-31 1992-03-24 Etablissments Cousin Freres Backlash free articulation reducing mechanism, usable notably for the setting of the various portions of an automobile vehicle seat
EP0559626A1 (fr) * 1992-03-04 1993-09-08 Vanni Gallocchio Réducteur planétaire
EP0584589A2 (fr) * 1992-08-04 1994-03-02 Ikeda Bussan Co., Ltd. Dispositif d'inclinaison de siège
US5462498A (en) * 1991-05-21 1995-10-31 Linvent Ab Device for relative angular setting of two units, preferably the inclination of a vehicle-seat back rest

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297496B (de) 1966-04-09 1969-06-12 Putsch Friedrich Wilhelm Gelenkbeschlag fuer Sitze mit verstellbarer Lehne, insbesondere Kraftfahrzeugsitze
FR1566179A (fr) 1967-11-21 1969-05-09
US3776067A (en) * 1972-09-19 1973-12-04 Curtiss Wright Corp Planetary gear transmission
DE2604489A1 (de) 1975-02-07 1976-08-19 Ihw Eng Ltd Sitzlehnen-einstellvorrichtung
FR2307495A1 (fr) 1975-04-18 1976-11-12 Faure Bertrand Perfectionnements aux articulations de sieges
DE2660395B1 (de) 1976-03-09 1980-08-14 Keiper Automobiltechnik Gmbh Drehbeschlag zum Verstellen des Neigungswinkels von Rueckenlehnen an Sitzen
DE3013304A1 (de) 1980-04-05 1981-10-15 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Stellvorrichtung fuer sitze und fenster, insbesondere von kraftfahrzeugen
DE3201309A1 (de) 1982-01-18 1983-07-28 Manfred Ing.(grad.) 4050 Mönchengladbach Lortz Zentrisch, kontinuierlich, moment- und kraeftefreier verstellmechanismus zur positionierung der sitzhoehe, sitzdistanz sowie der rueckenlehne fuer gebrauchsmoebel und automobilsitze
US4882943A (en) * 1987-12-03 1989-11-28 A&M Cousin Backlash-free reducing mechanism, particularly usable for setting various parts of a seat of an automobile vehicle
US5098359A (en) * 1989-08-31 1992-03-24 Etablissments Cousin Freres Backlash free articulation reducing mechanism, usable notably for the setting of the various portions of an automobile vehicle seat
US5462498A (en) * 1991-05-21 1995-10-31 Linvent Ab Device for relative angular setting of two units, preferably the inclination of a vehicle-seat back rest
EP0559626A1 (fr) * 1992-03-04 1993-09-08 Vanni Gallocchio Réducteur planétaire
EP0584589A2 (fr) * 1992-08-04 1994-03-02 Ikeda Bussan Co., Ltd. Dispositif d'inclinaison de siège

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220402407A1 (en) * 2019-10-31 2022-12-22 Keiper Seating Mechanisms Co., Ltd. Fitting for a vehicle seat
US11760235B2 (en) * 2019-10-31 2023-09-19 Keiper Seating Mechanisms Co., Ltd. Fitting for a vehicle seat

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