WO2013107617A1 - Roue d'engrenage d'un mécanisme de réglage servant à régler une pièce réglable dans un véhicule - Google Patents

Roue d'engrenage d'un mécanisme de réglage servant à régler une pièce réglable dans un véhicule Download PDF

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Publication number
WO2013107617A1
WO2013107617A1 PCT/EP2013/000043 EP2013000043W WO2013107617A1 WO 2013107617 A1 WO2013107617 A1 WO 2013107617A1 EP 2013000043 W EP2013000043 W EP 2013000043W WO 2013107617 A1 WO2013107617 A1 WO 2013107617A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
toothing
force introduction
spindle
power output
Prior art date
Application number
PCT/EP2013/000043
Other languages
German (de)
English (en)
Inventor
Stefan Schulze
Michael Morrow
Wolgang WACHTER
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg
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 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg filed Critical Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg
Publication of WO2013107617A1 publication Critical patent/WO2013107617A1/fr

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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
    • 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
    • B60N2/929—Positioning and locking mechanisms linear
    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • 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
    • F16H55/14—Construction providing resilience or vibration-damping
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms

Definitions

  • the invention relates to a gear of an adjusting gear for adjusting an adjusting part in a vehicle according to the preamble of claim 1.
  • a gear is rotatable about a longitudinal axis to be arranged and includes a first toothing for engagement with an adjusting force introducing a drive element and a second toothing for engagement a to be adjusted relative to the gear output element.
  • the invention relates, for example, to a gear wheel realizing a spindle nut of a spindle gear, in which the spindle nut is arranged on an output element in the form of a spindle and is driven during operation of the spindle gear by a drive element realizing drive screw such that the spindle nut in a rotational movement relative to the spindle is offset, as a result of which the spindle nut rolls on the spindle and is adjusted relative to the elongate spindle.
  • Such adjusting as they are realized for example by spindle gear, represent speed-reducing transmission, in which a (high) speed of the drive element in a (low) speed at which rotates the gear relative to the output element, and thus reduces the speed and the Torque be converted.
  • the first toothing of the gear, which is associated with the drive element, and the second toothing of the gear, which is assigned to the output element thereby meet completely different requirements.
  • the meshing engagement between the drive element and the gear should therefore be designed such that a noise excitation during operation of the variable speed is damped if possible.
  • the meshing engagement between the gear and the output element must have a high mechanical strength, because - for example, when using the variable speed as part of a WeglNicolsverstell adopted a motor vehicle seat - via the engagement between the gear and the output element crash forces must be derived.
  • the secure hold of the variable when used in a Wegldicasverstell sexually is essentially determined by the support of the gear on the output element. If, for example, a spindle gear of a WeglssensverstellINA in a crash, the spindle nut is not reliably held due to a tooth fracture of the meshing engagement between the gear and the output element on the spindle, there may be a sudden movement and a tearing of the vehicle seat, which involves significant injury to a vehicle occupant ,
  • screw or spindle gear teeth of a screw or a spindle nut is formed in sections with a power transmission area having a larger tooth width than other areas of the toothing.
  • DE 199 1 1 432 A1 does not relate to a gear wheel which has a first toothing and a second toothing.
  • a spindle drive for a seat-length adjustment of a motor vehicle seat is known, which has a designed as a hybrid spindle nut spindle nut.
  • the spindle nut has a functional part arranged in the frictional connection between a drive worm and a spindle and at least one crash force of the adjusting rail in the spindle, which is not arranged in the power flow for power transmission between the drive worm and the spindle, but as a starting part to replace a thrust washer and for supporting under exceptional load z.
  • B. is used in a crash case.
  • Object of the present invention is to provide a gear available that allows operation of a variable with low acoustic excitation and at the same time ensures a high mechanical strength for supporting gear parts together even with large mechanical loads, for example in a crash.
  • the gear has a first toothing carrying force introduction part and a different from the force introduction part, the second toothing supporting power output part, wherein the force introduction part and the power output part are made of materials with different damping behavior.
  • the force introduction part may be made of a first plastic material and the force output part of a second plastic material, wherein the first plastic material has a lower stiffness than the second plastic material.
  • Such a manufacture of the gear made of different plastic materials is for example in one piece by means of plastic injection molding in the so-called two-component technology (also referred to as "2K technology") possible, in which the gear in one operation in an injection molding tool using and injection of different materials becomes.
  • the force introduction part from a plastic material and the power output part from a metal or a metal core encapsulated with plastic.
  • the force introduction part made of plastic has a lower rigidity than the power output part made of metal or of a metal core encapsulated with plastic.
  • the fact that the force introduction part and the force output part are made of materials with different damping behavior is understood here to mean that the materials in particular have a different modulus of elasticity (also referred to as tensile modulus, elasticity coefficient or Young's modulus).
  • the Young's modulus is a material characteristic that describes the relationship between stress and strain in the deformation of a solid body with linear elastic behavior. A material of high stiffness has a large modulus of elasticity, a material of low stiffness, which is thus relatively flexible and thus has a good damping behavior, however, has a small modulus of elasticity.
  • a good damping behavior is to be understood in particular that the excitation of acoustic vibrations is damped due to a meshing engagement.
  • the force introduction part it is particularly important here that only a slight noise excitation occurs in the case of a dynamic load.
  • the force introduction part is advantageously made of a material of low stiffness, so that the force introduction part has a reduced stiffness relative to the power output part and accordingly can act to dampen a dynamic load. This dampens the noise when the drive element moves relative to the gear wheel.
  • the force introduction part can be configured for example from a Hydrell or POM (polyoxymethylene) without fiber reinforcement.
  • the plastic material from which the force introduction part is made may additionally be tribologically modified, for example by incorporation of PTFE particles (PTFE: polytetrafluoroethylene, also known as "Teflon”)
  • PTFE polytetrafluoroethylene
  • the power output member engaged with the output member is advantageously made of a high-strength material.
  • This material may be a plastic material such as a fiber reinforced plastic (POM or PEEK with fiber reinforcement) or a metal.
  • the power output part thus has a high strength, which in particular ensures a reliable hold of the gear on the output element even at high loads and thus, for example, when using the adjusting device on a safety-relevant part in a motor vehicle, for example on a motor vehicle seat, a release of the engagement of the gear reliably prevented with the output element in a crash.
  • the dynamic strength of a plastic made dispensing part may be beneficial.
  • variable speed gearbox incorporating the gear wheel is a speed reducing gear
  • the speed at which the gear wheel moves relative to the driven element during operation is low (namely, reduced by the speed of the drive screw relative to the gear wheel). , so that there is only a slight noise excitation at the point of engagement between the gear and the output element.
  • the mechanical strength is in the foreground, which is adjusted by specific adaptation of the choice of material of the power output in the desired manner.
  • the basic idea of the present invention is therefore based on the idea of separating the gear wheel functionally and material-technically into the force introduction part and the power output part, so that the different parts are specifically adapted to the specific requirements with regard to a static and dynamic load or a high mechanical strength can.
  • the force introduction part may in particular have a radial height which exceeds the tooth height of the first toothing.
  • the total radial height of the force introduction part (measured between the radially innermost point and the radially outermost point, relative to the longitudinal axis of the gear) is thus greater than the tooth height, ie the measured between the tooth base and the tooth tip of each tooth radial height of the toothing.
  • the force introduction part is thus not designed as a simple coating, but represents a structurally independent part, which is attached to the power output part.
  • the force introduction part and the power output part can be connected to each other, for example, positively and / or materially.
  • the power output part may have a connection section carrying a connection toothing, wherein the force introduction part is connected in a form-fitting manner to the power output part in the circumferential direction about the longitudinal axis via the connection toothing.
  • the force introduction member for mounting on the connecting portion along the longitudinal axis about which the gear is rotatable, plugged to bring a connection of the power delivery part associated toothing of the force introduction part positively with the connecting toothing of the power take-off.
  • the force introduction part can be molded onto the connecting portion of the power output part, so that in the molded state results in a material and positive connection of the force introduction part with the power output part.
  • connection of the force introduction part and of the force output part can also be produced by material engagement, for example by welding the force introduction part and the force output part together, in particular using laser welding.
  • the first toothing of the gear wheel is preferably designed as an outer toothing on a radially outer circumference of the gear, while the second toothing is formed as an internal toothing on a bore extending along the longitudinal axis.
  • the gear wheel as a spindle nut becomes possible, the first toothing of which is configured to engage with a drive screw forming the drive element and whose second toothing is designed to engage with a spindle forming the output element.
  • the gear in the form of the spindle nut is thus on the one hand via its first toothing (external toothing) with the drive element in the form of the drive screw and on its second toothing (internal toothing) with an external thread of the output element realized spindle engaged, so that in operation Adjusting the drive screw the spindle nut can put in a rotational movement about the spindle, as a result of which the spindle nut rolls on the spindle and thus causes an adjustment relative to the spindle.
  • the gear wheel in addition to the force introduction part and the force output part, may have a strength part which is designed for axially supporting the gear wheel in a direction along the longitudinal axis and is in communication with the force introduction part and / or the power output part.
  • the strength member may be formed, for example, of metal or a plastic core overmolded metal and serves to increase the strength of the gear in particular against unusual, for example, crash-induced loads.
  • the strength member may for example be formed as a bush which connects axially to the force introduction part or the power output part and is firmly connected to at least one of these parts.
  • the strength member may for example serve as a contact surface on an associated bearing portion of a housing and thus make, for example, a thrust washer superfluous.
  • the strength member may be used as a bearing for a bearing such. B. serve a ball bearing.
  • the strength member may in particular serve to provide an additional support of the gear relative to the output member in a case of exceptional load, especially in a crash. This may be particularly useful if both the force introduction part and the power output part are made of plastic, so that over the e.g. made of metal strength member, the strength of the gear overall can be further increased.
  • the strength part may additionally have a toothing assigned to the output element, which is designed not to engage the output element in a normal operating state during normal use of the variable speed gear.
  • the strength member thus does not affect the adjustment movement of the gear relative to the output member and in particular does not increase the friction, because there is no frictional engagement of the teeth of the strength member to the output member.
  • the toothing is, however, preferably designed such that in an exceptionally loaded state it comes into engagement with the driven element in order to provide additional support of the gear wheel on the driven element in this way. In the normal operating state, the toothing of the strength part is thus spaced from a toothing of the output element.
  • the first toothing of the force introduction part can be designed in particular as straight toothing, as helical toothing or else as globoid toothing. It is also conceivable here to combine different types of teeth with each other.
  • the first toothing of the force introduction part which serves for coupling with the drive element, be configured for example in an axially central portion of the toothing as cylindrical straight or helical toothing whose tooth root is at a constant radius (measured from the longitudinal axis of the gear) and the Teeth depth in the axial direction is approximately constant.
  • the toothing In axially outer sections, which connect on both sides to the axially central portion, the toothing, however, can be designed as a globoid toothing with axially decreasing tooth depth to the outside.
  • a cylindrical toothing can be provided in the central central portion of the toothing, which allows tolerances in the toothing engagement of the drive element in the toothing of the force introduction part.
  • a favorable system for example a worm toothing of the drive element, is provided on the individual tooth flanks of the toothing of the force introduction part in order to achieve a favorable introduction of force.
  • the gear is preferably part of an adjusting for adjusting an adjustment in a vehicle.
  • the adjusting gear has a drive element and an output element, wherein the gear wheel is designed to transmit an adjusting force from the drive element to the output element.
  • the adjusting mechanism can be designed, in particular, as a speed-reducing transmission in which a first rotational speed with which the drive element rotates relative to the gear during operation of the adjusting gear is greater than a second rotational speed with which the gear wheel moves relative to the output element.
  • a first rotational speed with which the drive element rotates relative to the gear during operation of the adjusting gear is greater than a second rotational speed with which the gear wheel moves relative to the output element.
  • the adjusting mechanism is preferably designed as a spindle gear, in which the drive element is realized as a drive worm with a worm toothing and the driven element as a spindle with an external thread.
  • the drive worm is in this case in the operation of the variable speed gear about an associated, from the longitudinal axis of the gear wheel realizing spindle nut different rotation axis and serves to initiate an adjusting force in the spindle nut.
  • the rotational movement of the spindle nut is in this case reduced to the rotational movement of the drive screw, so that a high speed of the drive screw is converted into a low speed of the spindle nut.
  • the output member realizing the spindle in turn is about its external thread with the gear realized in the spindle nut in engagement such that the spindle nut rolls on the spindle when it is placed on the drive screw in a rotary motion.
  • the spindle nut is moved longitudinally along the spindle, so that an adjusting part coupled to the spindle nut can be adjusted relative to an adjusting part coupled to the spindle.
  • Conceivable here are different embodiments of the spindle gear.
  • the spindle nut can be coupled to a fixed adjusting part, relative to which an adjusting part carrying the spindle is adjusted.
  • the spindle can be arranged stationary and stationary, so that in operation, the spindle nut is supported on the spindle and an adjusting part carrying the spindle nut is moved relative to the spindle.
  • FIG. 1 shows a schematic sectional view of an adjusting gear in the form of a
  • Fig. 2 is a schematic view of a vehicle seat; 3 is a perspective view of a power output of a gear;
  • Fig. 4 is a perspective view of a gear, the component of which
  • Fig. 5 is a schematic sectional view of another embodiment of a gear wheel
  • Fig. 6 is an enlarged view of the gear in the cutout A according to
  • Fig. 7 is a schematic view of another embodiment of a
  • 8A, 8B are schematic views of an asymmetric spindle nut in a
  • Gearbox housing when installed on different sides on a vehicle seat. 1 shows a schematic sectional view of an adjusting mechanism 1 which is designed as a spindle drive with a spindle 4 extended along a longitudinal axis L and a spindle nut 3 arranged rotatably on the spindle 4 about the longitudinal axis L and, for example, in a seat longitudinal adjustment device in a vehicle seat 5, as shown schematically in Fig. 2, can be used.
  • the vehicle seat 5 essentially formed by a backrest 51 and a seat part 50 is arranged on guide rails 52, 53 so as to be longitudinally adjustable on a vehicle floor of a vehicle.
  • the spindle 4 of the variable transmission 1 may for example be arranged fixed to a lower guide rail 53, while the spindle nut 3 is connected to a longitudinally adjustable on the lower guide rail 53 mounted upper guide rail 52 such that the spindle nut 3 about the longitudinal axis L rotatable , while axially but firmly held on the upper guide rail 52.
  • the adjusting gear 1, the spindle nut 3, driven by a rotational movement V1 of a drive screw 2, in a rotational movement V2 about the steering axis L is offset, so that the spindle nut 3 rolls on the spindle 4 and a Performs adjusting V along the spindle 4.
  • the spindle nut 3, driven by the drive worm 2, due to the threaded engagement on the spindle 4 rolls the spindle nut 3 is moved along the longitudinal axis L to the spindle 4 during operation of the variable transmission 1 and thus directs an adjusting force in the with her coupled adjustment (ie, for example, in the upper guide rail 52 and above in the vehicle seat 5) a.
  • the drive screw 2 forming a drive element has an outer toothing 20 in the form of a worm toothing, via which the drive worm 2 engages with a first toothing 300 in the form of an external toothing of the spindle nut 3.
  • the spindle nut 3 has a central, along the longitudinal axis L extended bore 31 1, on which a second toothing 310 is arranged in the form of an internal thread via which the spindle nut 3 is in engagement with a toothing 40 in the form of an external thread of the spindle 4.
  • the adjusting gear 1 realized in the form of the spindle gear, a speed-reducing transmission, in which a high speed of the drive screw 2 is converted into a lower speed of the spindle nut 3.
  • the adjusting mechanism 1 is designed as a speed-reducing transmission, the relative speed between the drive screw 2 and the spindle nut 3 in operation of the variable speed gear 1 is large compared to the relative speed between the spindle nut 3 to the spindle 4, because the rotational movement V2 of the spindle nut 3 against the Rotary movement V1 of the drive screw 2 is stocky.
  • the engagement between the drive screw 2 and the spindle nut 3 should be designed so that excessive noise excitation during operation despite the great dynamics of the movement of the drive screw 2 is avoided.
  • the spindle gear 2 is an adjustment (for example, the upper guide rail 52 of the vehicle seat 5) with the spindle nut 3 and the other adjustment part (for example, the guide rail 53 of the vehicle seat 5) coupled to the spindle 4 such that due to the adjustment movement V of the spindle nut 3 along the longitudinal axis L relative to the spindle 4, the adjustment parts are adjusted to each other.
  • the support of the adjustment parts to each other thus takes place via the spindle nut 3 and the spindle 4, which are held on the threaded engagement between the teeth 310, 40 to each other.
  • the adjusting parts ie in the illustrated embodiment, the vehicle seat 5 to the vehicle floor
  • the adjusting parts are thus held in position on the engagement of the spindle nut 3 with the spindle 4.
  • the engagement between the spindle nut 3 and the spindle 4 must therefore be designed crash-proof.
  • the spindle nut 3 of the illustrated variable transmission 1 is so functionally and materially separated, on the one hand, to provide the engagement between the drive worm 2 and the spindle nut 3, a force introduction part 30 and, on the other hand, to provide the engagement between the spindle nut 3 and the spindle 4, a force output part 31 is provided which is made of materials of different damping behavior.
  • the force introduction part 30 is configured from a material of low stiffness with a comparatively small modulus of elasticity, so that the force introduction part 30 acts damping and thus attenuates a noise excitation at the point of engagement between the drive screw 2 and the force introduction part 30.
  • the force introduction part 30 carries the first toothing 300 and engages via the first toothing 300 with the toothing 20 of the drive worm 2.
  • the power output part 31 is formed of a material of high strength and has a large modulus of elasticity.
  • the force introduction part 30 and the power output part 31 may each be formed, for example, from a plastic.
  • the force introduction part 30 can be formed, for example, from a plastic such as POM or PEEK without fiber reinforcement, while the power output part 31 is formed from a fiber-reinforced plastic, for example glass fiber reinforced POM or PEEK.
  • the force introduction member 30 made of plastic, such as POM or PEEK
  • the power output member 31 from a metal (eg steel) or from a molded plastic with metal core to manufacture such that the power output member 31 and In particular, the teeth 310 of the power output part 31 have a high strength compared to the force introduction part 30.
  • the power output part 31 made of a high-strength material, for example metal, with different materials, so that the power output part 31 is made use of the same material regardless of the application, the force introduction part 30 is made of different materials depending on the application and the force introduction part 30 is the one used in each case Requirements can be adjusted.
  • FIG. 3 and 4 show a first concrete embodiment of a spindle nut 3 which has a force output part 31 made of a solid material (see in a separate view in FIG. 3) and a force introduction part 30 formed of a material of lower stiffness (see FIG. 4 in FIG a state connected to the power output member 31).
  • the power output part 31 which may be formed, for example, from metal or a high-strength plastic, has a body 312 with a central bore 31 1, to which the second toothing 310 is formed in the form of an internal thread.
  • the body 312 carries a central peripheral connecting portion 313 which projects radially outward from the body 312 and to which a connecting toothing 314 for the positive connection of the power output member 31 is arranged with the force introduction member 30.
  • the connecting portion 313 runs around the body 312 in an annular manner.
  • the connecting toothing 314 is formed in the illustrated embodiment as a helical toothing. Axial on both sides of the connecting portion 313 frets 315, 316 are formed, to the z. B.
  • the force introduction part 31 is connected via the connecting teeth 314 of the connecting portion 313 in a form-fitting manner along the circumferential direction about the longitudinal axis L to the power output part 31.
  • the force introduction member 30 may be made, for example, as a separate part and subsequently pushed onto the power output member 31, wherein the force introduction member 30 at a central inner opening one of the connecting teeth 314 of the power output member 31 complementary internal teeth, which upon pushing the force introduction member 30 to the power output member 31st positively engages the connecting teeth 314 into engagement.
  • the force introduction member 30 and the power output member 31 in a common injection molding tool by plastic injection molding in 2K technology to manufacture such that the force introduction member 30 is injection molded from a first plastic and the power output member 31 made of a second plastic and the force introduction member 30 and the force introduction part 31 already enter into a positive connection in the injection molding tool.
  • the force introduction part 30 and the force output part 31 can also be connected to one another in a material-locking manner, for example by means of laser welding.
  • the spindle nut 3 an additional strength member 32 in the form of a made of metal or a particularly hard plastic bush, which is axially attached to the power output part 31 and by means of a collar 321st connected to this.
  • the strength member 32 serves for axial one-sided support of the spindle nut 3, for example, with respect to a housing and can replace a thrust washer.
  • the strength member 32 is in this case arranged in particular on the side of the spindle nut 3, which is exposed to high loads in a crash and therefore is firmly supported on a housing of the variable transmission 1, so that the spindle nut 3 is securely and reliably held on the housing.
  • a toothing 320 may be formed, which is designed such that it is not in a normal operating state of the variable transmission 1 with the toothing 40th the spindle 4 is in engagement, but is spaced therefrom. During normal operation of the adjusting gear 1, the toothing 320 thus does not contribute to the transmission of power and thus also to the friction.
  • FIG 7 shows a further exemplary embodiment of a spindle nut 3, in which the first toothing 300 of the force introduction part 30 has a crowning in the axial direction (so-called “crowning") marked by a radius R.
  • the force introduction part 30 is connected to the cylindrical, annular connecting section 313 of FIG Power delivery 31 arranged, wherein the outer peripheral surface of the force introduction part 30, on which the toothing 300 is arranged, a slightly curved in the axial direction, spherical shape, which compensates for tolerances at the location of engagement of the drive screw 2 in the teeth 300 of the spindle nut. 3 allows.
  • FIG. 8A and 8B show an embodiment of an adjusting gear 1 with a gear wheel in the form of a spindle nut 3, which is designed axially along the longitudinal axis L asymmetrically with pin-shaped collars 315, 316 of different axial length.
  • FIG. 8A shows the adjusting gear 1 in this case when installed on a first side of a vehicle seat 5, FIG. 8B, however, the adjusting gear 1 when installed on an opposite, second side of the vehicle seat. 5
  • the background is that using the same components, the adjusting gear 1 on different sides of a vehicle seat 5, so on the door to the vehicle, so-called door side and the center of the vehicle located, so-called tunnel side of a vehicle seat 5, should be mountable.
  • the spindle nut 3 has an asymmetry in the axial direction along the longitudinal axis L by their pin-shaped collars 315, 316 are formed with different axial length.
  • the collars 315, 316 serve to engage in bearing receivers 60, 61 of a transmission housing 6, so that the spindle nut 3 is rotatably mounted on the transmission housing 6 via the collars 315, 316 in the assembled state of the variable transmission 1 about the longitudinal axis L.
  • the collar 316 has an axially greater length than the collar 315. Due to its greater length, the collar 316 can accommodate a ball bearing 7, which serves for low-friction mounting of the spindle nut 3 to the transmission housing 6.
  • the gear housing 6 is arranged depending on an installation of the variable transmission 1 on the door side or the tunnel side in different orientations on the vehicle seat 5.
  • the spindle nut 3 is to be inserted into the transmission housing 6 such that the ball bearing 7 comes to lie in each case on the so-called force side facing the toothing 300, the operation of the variable transmission 1 side of the toothing 300, the largest force in a frontal crash subject, is averted.
  • the orientation of the spindle nut 3 is therefore always the same regardless of the installation orientation of the variable speed gear 1, so that - due to the different orientation of the gear housing 6 - the spindle nut 3 comes to rest in a different orientation in the gear housing 6 (see synopsis of FIGS. 8A and 8B) ,
  • the spindle nut 3 is supported via the ball bearing 7 with respect to a left wall 63 of the gear housing 6 in the illustration and via a thrust washer 8 with respect to a right wall 62 of the gear housing 6 in the illustration.
  • the spindle nut 3 is reversed axially relative to the gear housing 6, the spindle nut 3, however, is supported by the thrust washer 8 against the wall 63 and the ball bearing 7 on the wall 62.
  • the ball bearing 7 can be readily arranged on the collar 316 and the collar 316 thereby readily engage in the respectively associated bearing seat 61, 60.
  • the engagement depth of the collar 316 in the respective associated bearing seat 61, 60 is approximately equal to the depth of engagement of the collar 315 in the associated bearing seat 60, 61st
  • the engagement of the driving worm 2 arranged on the gearbox housing 6 with the serration 300 of the spindle nut 3 takes place in an engagement plane E which is perpendicular to the longitudinal axis L through the rotational axis D of the drive worm 2. Because the spindle nut 3 is asymmetrically shaped in the axial direction, depending on the arrangement of the spindle nut 3 in the Gear housing 6 and the arrangement of the teeth 300 relative to the drive screw 2, but the engagement plane E is approximately always at the same axial position of the spindle nut 3 comes to rest and corresponds approximately to the axial center plane of the spindle nut 3.
  • a gear according to the type described here can also be used in completely different types of adjusting gear and is not limited to spindle gear and in particular also not on adjusting the vehicle seats.
  • the force introduction part has previously been described as a radially outer part with an outer toothing
  • the power output part as a radially inner part with an internal toothing
  • any other designs of the gear are conceivable in which introduced via a force introduction part of force and a force output part an adjusting force is derived, which are adapted to different, special requirements by different choice of material of the individual parts.

Abstract

L'invention concerne une roue d'engrenage d'un mécanisme de réglage servant à régler une pièce réglable dans un véhicule, la roue comportant une première denture destinée à entrer en prise avec un élément d'entraînement induisant une force de réglage pour faire tourner la roue d'engrenage autour d'un axe longitudinal autour duquel la roue d'engrenage est à monter à rotation et une deuxième denture destinée à entrer en prise avec un élément entraîné à déplacer par rapport à la roue d'engrenage. Selon l'invention, la roue d'engrenage (3) présente une pièce (30) induisant une force, portant la première denture (300), et une pièce (31), délivrant une force, portant la deuxième denture (310) et différente de la pièce (30), cette dernière (30) et la pièce (31) étant réalisées dans des matériaux au comportement d'amortissement différent. De cette façon, on obtient une roue d'engrenage qui permet un fonctionnement d'un mécanisme de réglage à faible excitation acoustique et garantit en même temps une résistance mécanique élevée pour le soutien de pièces d'engrenage les unes contre les autres même en cas de grandes sollicitations mécaniques.
PCT/EP2013/000043 2012-01-20 2013-01-10 Roue d'engrenage d'un mécanisme de réglage servant à régler une pièce réglable dans un véhicule WO2013107617A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200834A DE102012200834A1 (de) 2012-01-20 2012-01-20 Getrieberad eines Verstellgetriebes zum Verstellen eines Verstellteils in einem Fahrzeug
DE102012200834.9 2012-01-20

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WO2013107617A1 true WO2013107617A1 (fr) 2013-07-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11407437B2 (en) 2018-07-23 2022-08-09 Thyssenkrupp Presta Ag Gear wheel of an adjustment drive mechanism for a steering column and steering column for a motor vehicle

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013218993A1 (de) * 2013-09-20 2015-03-26 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Sitzverstelleinrichtung
DE102014211402A1 (de) * 2014-06-13 2015-12-17 Robert Bosch Gmbh Kraftfahrzeugstell- oder -wischerantrieb mit einem Schneckengetriebe oder einem Schneckenschraubradgetriebe
US9840167B2 (en) 2015-06-30 2017-12-12 AISIN Technical Center of America, Inc. Power seat with complete walk-in system
WO2018068778A1 (fr) * 2016-10-10 2018-04-19 Grammer Ag Transmission ainsi qu'appuie-tête pourvu d'au moins un entraînement électrique, comprenant une transmission
DE102022203224A1 (de) 2021-10-13 2023-04-13 Adient Us Llc Getriebeeinheit und Getriebemotor und Verwendung dieser für einen Längseinsteller

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911432A1 (de) 1999-03-05 2000-09-21 Brose Fahrzeugteile Schnecken- oder Spindelgetriebe
EP1101652A1 (fr) * 1998-05-25 2001-05-23 Delta Kogyo Co., Ltd. Motoréducteur pour siège de véhicule
WO2010092120A1 (fr) 2009-02-11 2010-08-19 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Mécanisme d'entraînement à broche pour le réglage longitudinal d'un siège de véhicule automobile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008025643A (ja) * 2006-07-19 2008-02-07 Advics:Kk 回転伝達部材およびその製造方法
DE202006017591U1 (de) * 2006-11-17 2007-02-08 Kiekert Ag Kraftübertragungseinrichtung
DE102010001844B4 (de) * 2010-02-11 2023-06-01 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg Spindelgetriebe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101652A1 (fr) * 1998-05-25 2001-05-23 Delta Kogyo Co., Ltd. Motoréducteur pour siège de véhicule
DE19911432A1 (de) 1999-03-05 2000-09-21 Brose Fahrzeugteile Schnecken- oder Spindelgetriebe
WO2010092120A1 (fr) 2009-02-11 2010-08-19 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Mécanisme d'entraînement à broche pour le réglage longitudinal d'un siège de véhicule automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11407437B2 (en) 2018-07-23 2022-08-09 Thyssenkrupp Presta Ag Gear wheel of an adjustment drive mechanism for a steering column and steering column for a motor vehicle

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