Classifications

• • 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
  • 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
• • 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
• • 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
  • H02K1/12—Stationary parts of the magnetic circuit
  • H02K1/17—Stator cores with permanent 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
  • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
• • 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
  • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
  • E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
  • E05F11/50—Crank gear with clutches or retaining brakes, for operating window mechanisms
  • E05F11/505—Crank gear with clutches or retaining brakes, for operating window mechanisms for vehicle windows
• • 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
  • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
  • E05Y2201/47—Springs
  • E05Y2201/49—Wrap springs
• • 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
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
  • E05Y2900/53—Type of wing
  • E05Y2900/55—Windows

Definitions

• the invention relates to a transmission drive unit with a self-locking device, in particular for adjusting moving parts in the motor vehicle according to the preamble of the independent claim.
• the transmission drive unit according to the invention with a self-locking device with the characterizing features of independent claim 1 has the advantage that at the same time a drive motor with a lower weight can be used by the cost-effective design of a transmission with reduced friction for the same applications.
• the excitation magnet of the electric motor is designed as a relatively small and lightweight ring magnet, which encloses the armature package with the winding coils.
• an efficiency-optimized transmission can also be used for actuators, in which the transmission is to be locked at a power take-off load, as for example in
• the power density of the drive motor can be increased by the fact that the permanent-magnet of the electric motor can also have more than two magnetic poles.
• an even number of magnetic poles is used, for example 2, 4, 6 or 8 magnetic poles, wherein in the formation of exactly 4 magnetic poles, an optimum compromise between the increase in power density and the magnetization of the ring magnet for these engine sizes is achieved.
• the wall thickness of the ring magnet between 0.5 mm and 3 mm, with a comparatively small wall thickness of 0.5 mm to 1.5 mm - e.g. Approximately 1.0 mm - a particularly favorable
• a high-energy magnetic material is used for the production of such an annular magnet, preferably side-earth elements.
• This material can be particularly cost by sintering or in a Plastic bound to be shaped into an annular magnet.
• NdFeB is a particularly preferred high-energy magnetic material.
• the ring magnet in a circular pole pot, which is preferably produced by deep drawing.
• the outer diameter of the pole pot for example, between 25 mm and 33 mm and the wall thickness is approximately between 1 mm to 2 mm, which is sufficient for the magnetic return.
• the wall thickness of the pole pot in the cylindrical region is approximately 1.5 mm thick.
• the lamellae of the anchor package are made of a high-quality ferrous material and in particular of a thinner lamellar plate (compared with commercially available standard lamellae), so that in conjunction with the thin-walled ring magnet, the efficiency of the electric motor is significantly increased.
• the teeth between the arranged on the drive shaft screw and the corresponding worm wheel can be performed with particular low friction.
• the worm toothing has a reduced pressure angle of, for example
• an efficiency-optimized lubricant e.g. Topaz L32 can be used.
• the drive shaft is mounted on the one hand with a ball bearing, which is directly in the gear housing, preferably in an axial cylindrical extension thereof, arranged.
• a ball bearing which is directly in the gear housing, preferably in an axial cylindrical extension thereof, arranged.
• the drive shaft is mounted by means of a sliding bearing, which is preferably formed of sintered bronze.
• the ball bearing can absorb all acting axial forces of the drive shaft, so that the slide bearing is designed as a movable bearing in the pole housing, whereby the friction of the transmission drive unit is additionally reduced.
• the screw is manufactured particularly favorable by means of a rolling or rolling process directly on the drive shaft by means of plastic material forming formed.
• the outer diameter of the screw is significantly larger than the diameter of the drive shaft in the areas adjacent to the screw.
• a diameter of the drive shaft of about 5 to 8 mm is particularly suitable, wherein a 6 mm shaft is particularly preferably used.
• the drive shaft in the region of the screw can preferably be formed integrally with the armature shaft in the region of the disk set - in an alternative embodiment, however, also as separate components, which are then connected, for example, by means of a coupling.
• a bearing dome is formed in the bottom surface of the gear housing, which engages in the hub of the worm wheel.
• the bearing dome is for example made in one piece with the gear housing bottom made of plastic.
• a bearing pin made of a different material (e.g.
• the carbon brushes are advantageously designed as hammer brushes whose spring straps extend in the axial direction along the drive shaft. Particularly favorable is an arrangement of two
• Carbon brushes which are arranged offset in the circumferential direction by 90 °.
• the brush holder is annular, and inserted within an annular extension of the transmission housing.
• the pole pot can advantageously be reliably connected to each other by means of a positive connection, for example by caulking or other material deformation.
• the pole pot is advantageous on the cylindrical outer wall of the
• Gear housing extension arranged. Between the pole pot and the gear housing, an O-ring is for example arranged as a seal which is also pushed onto the cylindrical extension of the gear housing.
• the self-locking device has a locking element in a preferred embodiment, a wrap spring, which is inserted in between the worm wheel and the driver. In this case, a brake drum of the spring in the gear housing or in the lid or in a separate component is added.
• the wrap is doing radially on the gear housing, and engages without the use of additional separate components on the one hand in the worm and on the other hand in the driver, or the output element.
• the self-locking device with the blocking element can also be integrated in the adjustment system of the movable part, for example as part of seat elements or a window regulator mechanism.
• the transmission can be arranged directly on the drive motor and / or in the adjustment system.
• the drive motor and / or at least a part of the transmission is always designed optimized efficiency.
• the drive motor is formed together with at least part of the transmission as an integrated, compact unit that forms a defined interface to the part to be adjusted, or its adjustment system.
• the self-locking device is advantageously arranged in the separable (zuarribaren) drive motor gear unit, but can also be arranged in the part to be adjusted or in the adjustment system. In any case, the load moment acting on the transmission drive unit by the movable part is favorably blocked effectively.
• FIG. 1 is an exploded view of a transmission drive unit according to the invention
• Figure 2 shows a cross section through the pole housing
• Figure 3 shows another embodiment with a wrap spring as a self-locking device.
• FIG. 1 shows a transmission drive unit 10, which has a drive motor 12 and a transmission 14.
• the drive motor 12 has a pole housing 16 as a motor housing 15, in which a ring magnet 18 is arranged as the exciter magnet.
• the ring magnet 18 is formed in the embodiment as Hochenergypermanentmagnet containing as rare earth material Nd FnB.
• a lamination stack 20 is arranged with a plurality of fins 21 which is mounted on a drive shaft 22.
• the disk pack 20 has an electrical winding 24 which is connected to a commutator 26.
• the drive shaft 22 is mounted in the pole pot 16 by means of a sliding bearing 28, which here as
• the sliding bearing 28 is designed as a floating bearing, whereby the drive shaft 22 in the sliding bearing 28 in the axial direction 23 is displaceable.
• a ball bearing 32 is arranged, which is fixedly fixed in the transmission housing 36 after the finished assembly.
• the ball bearing 32 is fixed with an inner ring 33 on the drive shaft 22, and with an outer ring 34 in the gear housing 36.
• the ball bearing 32 is designed as a fixed bearing, which receives all forces acting axially on the drive shaft 22 forces.
• the free end 30 of the drive shaft 22 protrudes through a cylindrical extension 38 of the transmission housing 36 and into the transmission housing 36. She makes no stop at it.
• On the drive shaft 22 is in the range of
• Gear housing 36 a worm 40 is arranged.
• the screw 40 is formed, for example by means of plastic material deformation directly from the drive shaft 22, preferably by means of rolling.
• the outer diameter 42 of the worm 40 is larger than the outer diameter 44 of the drive shaft 22 in the remaining area of the drive shaft 22.
• the worm 40 meshes with a worm wheel 46, which with its
• Hub 45 is mounted on a bearing dome 48 and a bearing pin 49.
• the bearing dome 48 is formed, for example, in one piece with the bottom surface 50 of the transmission housing 36.
• the transmission housing 36 has a circular, radial wall 52, which has an opening 53 to the screw 40 out.
• the worm 40 forms with the worm wheel 46 a worm toothing 47, which is designed to be particularly efficient in terms of efficiency.
• the worm gear 47 has a reduced pressure angle (4 ° to 8 °) and a reduced coefficient of friction of approximately 0.025.
• a special lubricant is arranged in the gear teeth 47, which significantly reduces the friction of the worm gear 47.
• the worm wheel 46 is mounted on the bearing dome 48 by means of a special lubricant.
• the gear drive unit 10 has a self-locking device 60, which is designed to be movable as a disengagement lock 61 along the bearing pin 49 of the worm gear 47.
• a coupling element 62 along the Schneckenradachse 58 which rest on a corresponding surface profile 68 of the worm wheel 46. Due to a relative
• the coupling element 62 performs a movement along the Schneckenradachse 58, wherein a resilient return element 68 applies a corresponding counterforce against the disengagement of the coupling element 62.
• the coupling element 62 is rotatably connected to an output member 70, which transmits the torque, for example, to a part to be adjusted on the motor vehicle.
• the output element 70 is axially fixed in the exemplary embodiment by means of a clamping ring 73 on the bearing pin 49.
• the coupling element 62 with the worm wheel 46 is freely rotatable by the drive motor 12. However, acts a load torque from the drive member 70 to the transmission drive unit 10, the
• Coupling element 62 due to the relative movement to the worm wheel 46 and the surface profile 66 along the worm wheel 58 relative to the transmission housing 36 is engaged.
• a positive connection 72 forms between the coupling element 62 and the transmission housing 36, which locks upon the action of a load torque.
• the form-fit 72 is formed, for example, as a circumferential toothing 74 of the coupling element 62, which engages in a corresponding Jacobausformung 76 of the gear housing 36 - for example in the circular gear wall 52 -.
• the output element 70 is designed as an output pinion 71 with an outer toothing, which is operatively connected, for example, with a lifter mechanism of a window lifter.
• the pole pot 16 is connected to the transmission housing 36 via its cylindrical extension 38.
• the inner surface 17 of the pole pot 16 is supported radially on the outer surface 39 of the cylindrical extension 38.
• the cylindrical extension 38 For example, has a collar 78 to which a ring seal 80 - for example, an earring - is applied, which is pressed by the pole pot 16 against the collar 78.
• the pole pot 16 is connected by means of plastic material deformation 94 positively connected to the cylindrical extension 38. In this case, for example, the pole pot 16 by means of stamping tools against the outer surface 39 of the cylindrical
• a brush holder 82 is arranged, which surrounds the drive shaft 22 in an annular manner.
• carbon brushes 84 are arranged, which are formed in the embodiment as a hammer brush 85.
• the hammer brushes 85 have spring levers 83, which extend along the drive shaft 22, and abut the commutator 26.
• Further electronic components 86 are arranged on the brush holder 82, for example interference suppression elements 87 (chokes, capacitors, diodes) and a thermal protection switch 88.
• interference suppression elements 87 chokes, capacitors, diodes
• thermal protection switch 88 metallic shielding plates 89 for shielding the electromagnetic radiation (Farraday cage) may be arranged on the brush holder 82.
• magnetic sensors 90 are arranged, which for example
• Rotary position detection of the drive shaft 22 detect the magnetic encoder signal of a sensor magnet 92, which is arranged, for example, a ring on the drive shaft 22.
• the ball bearing 32 is mounted relatively close to the worm 40 on the drive shaft 22 and is in the assembly after insertion into the cylindrical extension 38 by means of a fixing element 31 within the cylindrical
• connector pins 96 lead out of the transmission case 36, which are injected into the transmission case 36, for example. About this connector pins 96, the electrical current and / or sensor signal transmission is ensured.
• Befest Whilesdome 108 are formed, with which the transmission drive unit 10, for example, to the body - especially screwed to the vehicle door - is.
• FIG. 2 shows a cross section through the pole pot 16 with the ring magnet 18 in order to define the size ratios of the outside diameters 100, 101 and the wall thicknesses 102, 103 of the pole housing 16 and of the ring magnet 18. Between the ring magnet 18 and the pole pot, for example, an adhesive 105 is arranged as a connecting means.
• FIG. 3 shows an alternative embodiment in which the self-locking device 60 has a wrap spring 55 as a blocking element.
• the wrap spring 55 is arranged between the worm wheel 46 and the transmission housing 36.
• the wrap spring 55 is circular, coaxial with the worm wheel 46 and is pressed against the inside of the circular gear wall 52 in the locked state of the transmission 14.
• spring ends 56 of the wrap spring can be angled radially inwards in order to form a positive connection with the worm wheel 46 or the driver 70.
• no bearing pin 49 is arranged in the gear housing 36, but a
• the wrap spring 55 can be varied as desired with respect to its geometric shape and its material properties, and have, for example, a jacket which influences the friction with respect to the surface of the gear housing 36.
• Forming the spring ends 56 are adjusted accordingly.
• the arrangement of the load torque lock 60 according to the invention within the transmission 14 can also be varied, with an arrangement between the last output element 70 and the worm wheel 46 is particularly favorable to protect the gear teeth 47 from excessive load.
• Coupling element 62 may be formed directly as a driven element 70 or as a driving element operatively connected thereto.
• the concrete shape of the contact surface of the wrap spring depending on the shape of the wrap spring 54, the worm wheel 46 and the coupling element 62 can be varied in many ways.
• the transmission drive unit 10 is the
• Adjusting moving parts such as a disc, a sunroof, a wiper, a seat part or a drive component used in the motor vehicle.
• at least a part of the transmission 14 - and thus also the self-locking device 60 - be formed as part of the part to be adjusted, or its adjustment system.
• the customer connection interface between the drive motor 12 and the adjustment system can be chosen so that the self-locking device 60 is integrated in the adjustment of the part to be adjusted, or disposed in the transmission housing 36, which is directly connected to the pot 16.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Gear Transmission (AREA)
• Dc Machiner (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=41396865

Family Applications (1)

Country Status (7)

Families Citing this family (32)

Citations (1)

Family Cites Families (26)

• 2008
  • 2008-10-24 DE DE102008043173A patent/DE102008043173A1/de not_active Withdrawn
• 2009
  • 2009-06-23 WO PCT/EP2009/057845 patent/WO2010000650A2/de active Application Filing
  • 2009-06-23 KR KR1020117000097A patent/KR101648020B1/ko active IP Right Grant
  • 2009-06-23 CN CN200980134776.XA patent/CN102144348B/zh not_active Expired - Fee Related
  • 2009-06-23 JP JP2011515359A patent/JP5570505B2/ja not_active Expired - Fee Related
  • 2009-06-23 US US13/002,534 patent/US8823228B2/en not_active Expired - Fee Related
  • 2009-06-23 EP EP09772350A patent/EP2297839A2/de not_active Withdrawn

Patent Citations (1)

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