WO2023012010A1 - Entraînement de réglage pour un élément de réglage d'un véhicule automobile et utilisation d'une vis - Google Patents

Entraînement de réglage pour un élément de réglage d'un véhicule automobile et utilisation d'une vis Download PDF

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Publication number
WO2023012010A1
WO2023012010A1 PCT/EP2022/071095 EP2022071095W WO2023012010A1 WO 2023012010 A1 WO2023012010 A1 WO 2023012010A1 EP 2022071095 W EP2022071095 W EP 2022071095W WO 2023012010 A1 WO2023012010 A1 WO 2023012010A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
worm
drive
screw
aluminum alloy
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2022/071095
Other languages
German (de)
English (en)
Inventor
Alexander Kifer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Brose Fahrzeugteile SE and 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 Brose Fahrzeugteile SE and Co KG filed Critical Brose Fahrzeugteile SE and Co KG
Publication of WO2023012010A1 publication Critical patent/WO2023012010A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
    • E05F15/697—Motor units therefor, e.g. geared motors
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E05Y2201/704—Worm wheels
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/67—Materials; Strength alteration thereof
    • E05Y2800/674—Metal
    • 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

Definitions

  • the invention relates to an adjustment drive for an adjustment element of a motor vehicle. Furthermore, the invention relates to the use of a worm in such an adjustment drive, in particular in a gear of such an adjustment drive.
  • Adjusting drives are used in motor vehicles to adjust various adjusting elements (also: “actuating elements”).
  • these adjustment elements are adjustable window panes, trunk lids, sunroofs, folding roofs or the like.
  • electric motors are used as force-generating elements. These are often coupled with the corresponding adjustment element by means of a transmission that has a (at least approximately) 90-degree turn steering—particularly in order to enable the adjustment drive to have the flattest possible design.
  • Such a gear is usually a screw-and-roll gear, in particular a gear commonly referred to as a "worm gear”, which has a worm coupled to the motor shaft of the electric motor, in particular arranged in alignment, the teeth of which are designed in the manner of a screw thread or a helix, as well as a worm wheel whose axis is offset by about 90 degrees from the axis of the worm.
  • "About” is understood here as a range of about 15 degrees around the exact 90 degree position. It is known to use axes arranged at an angle of greater or less than 90 degrees to one another, for example in order to increase the overlap of the teeth between the worm and the worm wheel.
  • gears Conventional materials for gears are usually steels, since these are usually tough, hardenable and/or relatively easy to machine. This makes them well suited for comparatively heavily loaded gears. Brass alloys are also often used, especially in gears that are not subject to heavy loads. These are characterized, among other things, by good emergency running properties.
  • the object of the invention is to improve an adjustment drive for an adjustment element of a motor vehicle.
  • the adjusting drive according to the invention is set up and provided for adjusting an adjusting element of a (in particular land-based, preferably wheel-bound) motor vehicle.
  • a (in particular land-based, preferably wheel-bound) motor vehicle is preferably any element of such a motor vehicle that can be moved between predetermined positions (and preferably along a predetermined path).
  • the adjusting drive is designed as a window lifter drive for an adjustable window pane in this motor vehicle.
  • the adjustment drive according to the invention has an electric motor and a gear mechanism downstream of this electric motor.
  • This gear includes a worm. Consequently, the transmission is designed as such that a deflection of about 90 degrees (+/- 15 degrees) is realized.
  • the snail is made from an aluminum alloy. Compared to brass or steel, aluminum has the advantage that it has a comparatively low density and thus contributes to the lightweight construction of the adjustment drive, i.e. to weight savings. In particular, with the same weight-related costs (in particular when comparing the aluminum alloy to brass), a cost saving is also possible—due to the weight saving described above.
  • the use according to the invention provides for the use of a worm made of an aluminum alloy in a gearing of an adjusting drive for an adjusting element of a motor vehicle, in particular a window lifter drive for an adjustable window pane of a motor vehicle.
  • the worm described above and in the following in more detail is therefore preferably used according to the invention in the gearing of the adjusting drive, specifically the window lifter drive.
  • the adjustment drive and the use share the same physical features described here and below, as well as the advantages resulting therefrom.
  • the aluminum alloy for the worm is selected in such a way that its mechanical properties are similar to brass that is usually used for toothed transmission elements, in particular for worm gears, for example CuZn37. “Approximately” is preferably understood to mean that the values of the corresponding properties of the aluminum alloy are in the same order of magnitude, in particular within a range of preferably 10 to 20 percent, around the value of the brass. For example, the so-called tensile strength of the aluminum alloy is up to 60 N/mm 2 above the value of brass (for CuZn37 around 380 N/mm 2 ). A coefficient of thermal expansion and a thermal conductivity are also preferably in such a range around the corresponding value of brass. As a result, brass can advantageously be replaced with almost no change in properties.
  • the aluminum alloy for the worm is chosen such that the aluminum alloy has a nominal (ie based on their chemical name) has an aluminum content of more than 93% by weight, preferably more than 94% by weight, preferably equal to or more than 95% by weight.
  • the proportion of the individual alloying components compared to the chemical designation is often subject to a fluctuation between an upper and a lower limit, so that in a material analysis of nominally the same materials - at least theoretically - deviations of 1% by weight or even more occur across all alloying components can.
  • an aluminum alloy with the chemical designation AICu4Mg1 (also known under the designations 3.1355 or EN AW 2024) can contain up to 4.9% by weight of copper and up to 1.8% by weight of magnesium, contrary to the nominal proportion. -% included, although the designation indicates a nominal total alloying component content of about 5% by weight.
  • the screw is made of an aluminum alloy that is selected in such a way that it is zinc-free or alternatively has a zinc content of less than 7% by weight, preferably less than 4% by weight, in particular less than 2 % by weight, particularly preferably below 1% by weight.
  • This low proportion of zinc in the aluminum alloy has the advantage that the aluminum alloy is comparatively low in brittleness and the risk of fractures is therefore reduced.
  • the screw is made of AICu4Mg1.
  • the screw is made of AISil MgMn (also known under the designations 3.2315 or EN AW 6082).
  • the worm is designed separately from a motor shaft of the electric motor and is connected to the motor shaft.
  • the screw is in one piece, i. H. monolithic, formed with the motor shaft.
  • the adjustment drive can also be designed as a drive for an adjustable part of a vehicle seat, for a vehicle lock, for a sunroof, a vehicle top, a door of the motor vehicle or the like.
  • FIG. 1 shows a schematic drawing of an electric window lifter of a motor vehicle
  • Fig. 2 in a partial sectional view schematically a window lifter drive
  • FIG 3 shows a further exemplary embodiment of the window lifter drive in a schematic partial sectional illustration.
  • a window lifter 1 of a motor vehicle is shown schematically.
  • the window lifter 1 includes an adjustment drive 2 (or in the present case: “window lifter drive”), by means of which an adjustment element, here a vehicle window 4, can be adjusted, in particular opened or closed.
  • the adjustment drive 2 has an electric motor 8 mounted on a base plate 6, which drives a cable drum 12 via a gear 10 (see FIG. 2), around which several windings of a cable 14 closed to form a loop are wound.
  • the cable 14 is guided via cable deflection rollers 16 along a guide rail 18 on which a driver 20 with a lifting rail 22 for receiving the vehicle window 4 is moved by means of the cable 14 as a result of a corresponding activation of the adjustment drive 2 .
  • the adjustment force i.e. a drive-side torque of the electric motor 8 is transmitted by means of the cable 14 to the vehicle window 4, which, depending on the direction of rotation of the electric motor 8, can be raised or lowered along an adjustment path between a closed position and an open position.
  • the adjustment drive 2 comprises the electric motor 8 with a motor or pole housing 24 and a da- with gear housing 26 connected via a flange connection, wound rotor 28 rotatably mounted and a stator 30 formed from permanent magnets. Via its motor shaft 32, electric motor 8 drives gear 10 with a worm 34 fixed to the shaft and with a worm wheel 36 rotatably mounted in gear housing 26.
  • the adjustment drive 2 also includes electronics or an electronics module 38 with a printed circuit board 40 fitted with components.
  • a Hall sensor 42 is also arranged on the printed circuit board 40 , facing the motor shaft 32 .
  • the printed circuit board 40 runs transversely (perpendicularly) to the motor shaft 32, so that the Hall sensor 42 faces a ring magnet 44 which is arranged on the motor shaft 32 in a rotationally fixed manner, at the smallest possible axial spacing.
  • the Hall sensor 42 detects a changing magnetic field as the ring magnet 44 rotates. Depending on the number of magnetic poles of the ring magnet 44, this leads to a number of countable Hall pulses, which are evaluated by the electronic module 38 to determine the motor speed and the direction of rotation of the electric motor 8.
  • Hall sensor 42 has two sensor surfaces that are spaced apart from one another in a suitable manner (not shown) so that the respective direction of rotation is identified from the sequence of counting pulse sequences generated by the sensor surfaces at different times.
  • FIG 2 shows an exemplary embodiment in which the worm 34 is manufactured in one piece with the motor shaft 32 .
  • the worm 34 is manufactured separately from the motor shaft 32 and is attached to the motor shaft 32 .
  • the worm 34 is also made from an aluminum alloy, specifically from AlCu4Mg1.
  • the worm 34 has mechanical properties that are comparable to a conventional brass alloy, specifically approximately equivalent, but with weight and cost savings.
  • the motor shaft 32 is also made from this aluminum alloy.
  • the Motor shaft 32 made of a different material, in particular a metal, preferably made of steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

L'invention concerne un entraînement de réglage (2) destiné à un élément de réglage (4) d'un véhicule automobile, en particulier un entraînement de lève-vitre pour une vitre réglable (4) d'un véhicule automobile. L'entraînement de réglage (2) comporte un moteur électrique (8) et un engrenage (10) monté en aval du moteur électrique et comprenant une vis (34). Cette vis (34) est constituée d'un alliage d'aluminium.
PCT/EP2022/071095 2021-08-03 2022-07-27 Entraînement de réglage pour un élément de réglage d'un véhicule automobile et utilisation d'une vis Ceased WO2023012010A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021208421.4A DE102021208421A1 (de) 2021-08-03 2021-08-03 Verstellantrieb für ein Verstellelement eines Kraftfahrzeugs und Verwendung einer Schnecke
DE102021208421.4 2021-08-03

Publications (1)

Publication Number Publication Date
WO2023012010A1 true WO2023012010A1 (fr) 2023-02-09

Family

ID=83005848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/071095 Ceased WO2023012010A1 (fr) 2021-08-03 2022-07-27 Entraînement de réglage pour un élément de réglage d'un véhicule automobile et utilisation d'une vis

Country Status (2)

Country Link
DE (1) DE102021208421A1 (fr)
WO (1) WO2023012010A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1211380A1 (fr) * 2000-11-29 2002-06-05 Cherubini S.p.A. Treuil à vis sans fin pour store ou volet roulant
DE112012005088T5 (de) * 2011-12-06 2014-08-21 Honda Motor Co., Ltd. Schneckengetriebemechanismus
EP3241919A1 (fr) * 2016-05-04 2017-11-08 Wieland-Werke AG Alliage cuivre/aluminium/manganese et son utilisation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11108057A (ja) 1997-10-06 1999-04-20 Smc Corp 変位機構における摺動部の構造およびその形成方法
DE102005027135A1 (de) 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Verzahnung aus Aluminium
JP2013108609A (ja) 2011-11-24 2013-06-06 Nsk Ltd ウォーム減速機及び電動パワーステアリング装置
DE102012017040A1 (de) 2012-08-29 2014-03-27 Gkn Sinter Metals Holding Gmbh Verfahren zur Herstellung eines Verbundbauteils sowie ein Verbundbauteil
DE102019205256A1 (de) 2019-04-11 2020-10-15 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Antriebsvorrichtung mit einem bürstenlosen Elektromotor
DE102019213762A1 (de) 2019-09-10 2021-03-11 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Bürstensystem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1211380A1 (fr) * 2000-11-29 2002-06-05 Cherubini S.p.A. Treuil à vis sans fin pour store ou volet roulant
DE112012005088T5 (de) * 2011-12-06 2014-08-21 Honda Motor Co., Ltd. Schneckengetriebemechanismus
EP3241919A1 (fr) * 2016-05-04 2017-11-08 Wieland-Werke AG Alliage cuivre/aluminium/manganese et son utilisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BRAEUTIGAM F: "OBERFLAECHENHAERTEN VON SCHNECKEN FUER SCHNECKENGETRIEBE//SURFACE HARDENING OF WORMS FOR WORM GEAR MECHANISMS", WERKSTATT UND BETRIEB, HANSER, MÜNCHEN, vol. 107, no. 10, 1 October 1974 (1974-10-01), pages 619/620, XP008053968, ISSN: 0043-2792 *

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