WO2018068885A1 - Actionneur, en particulier pour des systèmes de confort de véhicules automobiles - Google Patents

Actionneur, en particulier pour des systèmes de confort de véhicules automobiles Download PDF

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Publication number
WO2018068885A1
WO2018068885A1 PCT/EP2017/001175 EP2017001175W WO2018068885A1 WO 2018068885 A1 WO2018068885 A1 WO 2018068885A1 EP 2017001175 W EP2017001175 W EP 2017001175W WO 2018068885 A1 WO2018068885 A1 WO 2018068885A1
Authority
WO
WIPO (PCT)
Prior art keywords
worm
motor
worm wheel
actuator according
actuator
Prior art date
Application number
PCT/EP2017/001175
Other languages
German (de)
English (en)
Inventor
Wolfgang GRUMBRECHT
Matthias Näpfel
Michael Oppermann
Winfried Schmidt
Alfred KASCHMER
Steffen Neumann
David HEIDENFELDER
Original Assignee
Oechsler Aktiengesellschaft
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 Oechsler Aktiengesellschaft filed Critical Oechsler Aktiengesellschaft
Publication of WO2018068885A1 publication Critical patent/WO2018068885A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator

Definitions

  • the invention relates to an actuator according to the preamble of the main claim, as he, as a power window drive installed in motor vehicle doors, a variety of uses.
  • an actuator for other comfort functions such actuator is used, such as for electromotive seat adjustment, sunroof operation or belt tightening.
  • the electromechanical commutation by means of stationary brushes on rotating commutator blades results in brush fire and electromagnetic interference in the DC motor.
  • a self-locking screw is pressed in with the common actuator motor - a complex manufacturing process.
  • Such a screw with designed for geared self-locking edge inclination has only a moderate efficiency. This can cause a functionally critical loss of heat development in the closed housing of the actuator, even with repeated short-term operation. The then requires the additional effort of installing heat sinks for targeted heat dissipation.
  • the small worm meshes with a large diameter worm wheel. This requires a large-volume surrounding housing for the actuator.
  • the present invention is based on the technical problem of designing an actuator of the generic type while ensuring at least the same functionality, in particular lighter and smaller, and also for less expensive production.
  • the screw is designed for only slightly self-locking screw pitch.
  • An additional contribution to the self-locking of this actuator is then provided by the pronounced cogging torque of its motor.
  • this drive motor in the actuator an at least three-phase external rotor synchronous motor is preferably used, which is characterized despite small size on the one hand high torque and on the other hand high cogging torque. Equipped preferably with a polymer stator, especially when also injection-molded permanent magnet rotor, it represents a particularly light, small-sized actuator or drive motor. Its comparatively low engine speed reduces the required gear reduction and thus opens up the use of a worm wheel of additionally reduced diameter, So with further reduced installation space requirements.
  • Such an actuator preferably uses an external rotor motor with electronic field commutation.
  • the control of the motor opens a sensitive speed control even under load. This makes it possible to hide as far as possible mechanical self-resonance phenomena of the actuator itself, as well as those from its installation environment, via speed compensation.
  • electromechanically commutating DC motor it is that in such a three-phase motor with the brush firing omitted and the previously required shielding and circuit measures to meet EMC requirements unnecessary.
  • stretched cup-shaped rotor can be inexpensively created in multi-component plastic injection molding process, including outside of the pot bottom torsionally rigid molded motor shaft with worm and bearing mounts.
  • a metal sleeve can be encapsulated as an injection mold insert with roughened surface for positive engagement with the screw, which is then mounted on the motor shaft; or the free end of the motor shaft projecting through the motor plate is molded directly over as an insert with the screw.
  • the downstream of the screw follower for the torque increase due to speed reduction consists in principle of a series of front-toothed wheels.
  • the gear train for mechanical relief over a certain distance is applied at least twice in parallel. These parallel load interventions are brought together again before the output shaft. From the thus increased torque due to reduced speed gear results for this invention designed actuator a desirable increase in performance with speed-related reduced noise in a smaller enclosure.
  • Space-saving as linear sequences of spur gears for the parallel load interventions is to decouple the increased torque due to gear speed reduction on the concentrically rotating carrier load-dividing epicyclic gears of a planetary gear. Then engages a toothed rotatable stub shaft concentrically driving on the only small worm wheel between the epicyclic. As a result of this, they are subjected to concentric co-rotation of their common carrier. weighed down. The actual load transfer takes place by means of serving as the output shaft rotationally fixed stub shaft of that rotating carrier - so, as already mentioned no longer on the screw, which is thereby mechanically relieved.
  • the above-outlined inventive design leads to a weight reduction of at least 25% with at least a doubling of the efficiency on the basis of previously about 30%.
  • the worm carried by the motor shaft and its worm wheel are preferably engaged with one another as plastic injection molded parts.
  • the worm is relieved that it is driven relatively low speed and also provides only a small speed reduction to the worm wheel, which is why the worm wheel has only a small diameter; whereupon a greatly reduced output speed with correspondingly increased output torque only then, ie generated without further stress of the screw, approximately via parallel driven epicyclic and then merged on their common, rotating carrier.
  • FIG. 2 shows in broken axial longitudinal section the structure of a preferred in such actuator multi-phase synchronous motor with electronic commutation.
  • a created in plastic injection molded housing 1 1 of the outlined actuator 12 receives a slim-building, multi-phase electronically commutated external rotor synchronous motor 13.
  • a rotatably connected to the rotor 15 steel, also mounted outside of the motor 13 in the housing 1 1 motor shaft 16 may be rotatably fitted in the form or adhesion with an approximately made of light metal or plastic screw 17. More advantageously, however, as sketched, the bottle-shaped external rotor 15 together with the shaft 16 and the screw 17 are made in one piece in multi-component plastic injection molding. Then, a bearing seat 27 is preferably provided between the rotor 15 and screw 17 on the shaft 16 of such a large diameter that a roller bearing 28 can be slid over the screw 17 across here axially. Axially in each case opposite the rotor 15 can be mounted on the stator 14 and the shaft 16 as sketched in the pitch joint of the housing 11 via a sliding bearing 29.
  • the worm 17 is, in the interest of high efficiency with smooth-running toothing engagement of a worm wheel 19, designed for only a little self-locking edge slopes.
  • the axis of rotation 18 of the worm wheel 19 is oriented in the housing 1 1 transverse to the motor and worm shaft 16 and at least stored in the lower part of the housing 11.
  • the worm wheel 19 has a relatively small diameter; It therefore engages with its Stim profiling with only comparatively low speed reduction in the screw 17 a. The result is that the worm engagement is mechanically only slightly loaded by the corresponding moderate torque increase.
  • the essential part of the load transfer to the output shaft 32 is from
  • the planetary gears 22 drivingly engages a spur pin 23 or stub shaft of the rotationally fixed associated worm wheel 19 concentric.
  • the planetary gears 22 run as parallel load engagement along an optionally toothed inner surface 20 on or in the housing 11 from; with entrainment of its carrier 25, which thereby rotates about its concentric to the lateral surface 20 axis 18.
  • the epicyclic wheels 22 are mounted axially parallel offset.
  • An axially projecting stub shaft 26 from the carrier 25 serves as the output shaft 32 protruding from the housing 11 of the actuator 12 with its, compared to the engine output, due to reduced rotational speed increased torque.
  • an approximately desired inhibiting effect is provided by the cogging torque of the motor 13.
  • the works preferably as electronically commutating, via its feed frequency speed controllable multiphase polymer synchronous motor 13 with permanent magnetic outer rotor 15.
  • the rotor 15 may be created together with the shaft 16 and the screw 17 in multi-component plastic injection molding. This results in a particularly light and small-sized, overheat-free speed controllable, silent running actuator 12th
  • stator 14 which has at least one group 33 of coaxial, thick, hollow cylindrical wound coils 34.
  • Each coil core 35 is equipped at its two ends 37, each with a pole 38.
  • Its perforated hub 39 is inserted non-rotatably approximately on a central or axially parallel protruding from the core 35 pin 40.
  • Their spokes 41 extend radially outward, and then along the outer circumferential surface 42 of the coil 34 bent axially parallel ends.
  • the two pole wheels 38 of a coil core 35 are pivoted against each other and the end offsets 43 of their spokes 41 are dimensioned so narrow that the axially parallel to each other pointing offsets 43 along the outer circumferential surface 42 come to rest circumferentially next to each other.
  • This stator 14 is surrounded by a tubular rotor 15, preferably made of plastic.
  • The has, along its inner circumferential surface 45 over the axial length of the successive coil groups 33, with alternating polarity circumferentially, strip-shaped permanent magnets 44.
  • The run parallel to the axis and thus also parallel to the centripetally adjacent pole shoe-offsets 43 and are radially magnetized.
  • the succession of alternating magnetic polarities corresponds to that of the adjacent pole wheel offsets 43.
  • These permanent magnets 44 may be individually mounted in the rotor 15 or on the rotor 15; or they are integrally formed as a rotor 15 in multi-component injection molding.
  • Such a motor 13 is operated by means of a control circuit (not shown), by means of which the corresponding coils 34 of all groups 33 are controlled with their staggered spokes 41 in succession.
  • a control circuit (not shown), by means of which the corresponding coils 34 of all groups 33 are controlled with their staggered spokes 41 in succession.
  • the electrical connection of the coils 34 to the control circuit can be effected by a hollow and locally perforated support rod 36, on which the stationary coil groups 33 are lined up for receiving the engine torque rotatably.
  • the actuator 12 is equipped with a small-sized multiphase (shown here three-phase) slim external rotor synchronous motor 13, which is characterized with low weight due to high power density by very good efficiency (at least about 80%) with correspondingly low heat generation, despite high torque comparatively low speed in the order of only 3000 U / min and high cogging torque.
  • a small-sized multiphase (shown here three-phase) slim external rotor synchronous motor 13 which is characterized with low weight due to high power density by very good efficiency (at least about 80%) with correspondingly low heat generation, despite high torque comparatively low speed in the order of only 3000 U / min and high cogging torque.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Le but de l'invention est de produire un actionneur (12), monté dans le véhicule automobile pour des fonctions de confort, qui soit plus petit, plus léger et plus économique, sans affecter le fonctionnement et avec une efficacité accrue. A cet effet, la vis sans fin (17) est moins sollicitée et la taille de la roue hélicoïdale (19) est réduite en conséquence, par le fait qu'elle est entraînée à une plus faible vitesse de rotation relative et qu'elle fournit vers la roue hélicoïdale (19) seulement une faible démultiplication de vitesse; de ce fait, on obtient une vitesse de sortie réduite avec un couple de sortie accru en conséquence seulement après, c'est-à-dire sans autres sollicitations de la vis sans fin (17), par exemple par le biais de roues (22) entraînées en parallèle, celle-ci est ensuite transmise à leurs supports (25). Dans le but d'obtenir un haut rendement de l'entraînement à vis sans fin (17/19), ses flancs sont conçus avec seulement un faible auto-blocage, et un blocage du couple d'encliquetage du moteur (13) est par ailleurs assuré. Il fonctionne de préférence sous forme de moteur synchrone polymère (13) multiphasé dont la vitesse de rotation peut être commandée par le biais de sa fréquence d'alimentation, qui présente un rotor extérieur (15). Le rotor (15) peut être fabriqué, avec le montage d'aimants permanents et conjointement avec l'arbre (16) et la vis sans fin (17) par un procédé de moulage par injection de plastique à plusieurs composants.
PCT/EP2017/001175 2016-10-15 2017-10-05 Actionneur, en particulier pour des systèmes de confort de véhicules automobiles WO2018068885A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016008406.3 2016-10-15
DE202016008406 2016-10-15

Publications (1)

Publication Number Publication Date
WO2018068885A1 true WO2018068885A1 (fr) 2018-04-19

Family

ID=61905162

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/001175 WO2018068885A1 (fr) 2016-10-15 2017-10-05 Actionneur, en particulier pour des systèmes de confort de véhicules automobiles

Country Status (2)

Country Link
DE (1) DE102017009463A1 (fr)
WO (1) WO2018068885A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018131796B4 (de) * 2018-12-11 2023-04-20 Taktomat Kurvengesteuerte Antriebssysteme Gmbh Drehvorrichtung
DE102019128049A1 (de) * 2019-10-17 2021-04-22 Henzel Automotive GmbH Elektrische Stelleinheit
CN112682567B (zh) * 2020-12-17 2022-10-18 浙江福瑞科流控机械有限公司 一种可降低阀门操作力矩的驱动装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529900A (en) * 1978-07-29 1985-07-16 Sony Corporation Brushless motor
DE20313921U1 (de) * 2003-09-08 2005-01-13 Dewert Antriebs- Und Systemtechnik Gmbh & Co Kg Schneckengetriebe und damit gebildete Antriebseinheit
DE10331779A1 (de) * 2003-07-11 2005-02-24 Robert Bosch Gmbh Stellaggregat
JP2009124892A (ja) * 2007-11-16 2009-06-04 Mitsuba Corp 電動モータ
DE102011083518A1 (de) * 2011-09-27 2013-03-28 Robert Bosch Gmbh Verstellantrieb mit einem Getriebemotor mit Dauermagneten aus einem Seltenerdmetall

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529900A (en) * 1978-07-29 1985-07-16 Sony Corporation Brushless motor
DE10331779A1 (de) * 2003-07-11 2005-02-24 Robert Bosch Gmbh Stellaggregat
DE20313921U1 (de) * 2003-09-08 2005-01-13 Dewert Antriebs- Und Systemtechnik Gmbh & Co Kg Schneckengetriebe und damit gebildete Antriebseinheit
JP2009124892A (ja) * 2007-11-16 2009-06-04 Mitsuba Corp 電動モータ
DE102011083518A1 (de) * 2011-09-27 2013-03-28 Robert Bosch Gmbh Verstellantrieb mit einem Getriebemotor mit Dauermagneten aus einem Seltenerdmetall

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