Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
  • B60S1/16—Means for transmitting drive
  • B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
  • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
  • H02K11/026—Suppressors associated with brushes, brush holders or their supports
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
  • H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches
• • 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

Definitions

• the invention relates to an electric drive, in particular a windshield wiper drive for vehicles, according to the preamble of the independent claim.
• the motor is arranged in a cup-shaped, metallic housing, which is assembled with a transmission housing.
• an insulating base plate as a support for the motor brushes and other electrical components.
• Three reactors for radio interference suppression of the motor are arranged on both sides of the base plate partly in the motor housing, partly in the gear housing without noise shield.
• the electric drive according to the invention with the features of the independent claim has the advantage that the drive can be made very compact overall by the existing preferably in the metallic motor housing free space for the partial housing of the suppression device is used.
• this, however, the interference suppression effect is improved because it is avoided that leads from the engine compartment to the suppression means protrude into the shielded area of the gear housing and emit interference there.
• Gear housing facing end face of the motor housing largely covers, leaving only a recess for the passage of the motor shaft and at least one further recess for the passage of a electrical interference suppression element such as a choke coil, these recesses can each be minimized specifically to the required fürerieshus.
• the inductor aligned axially parallel to the motor shaft and is preferably arranged with the greater part of their length in the motor housing, while their remote from the motor housing, filtered end protrudes into the transmission housing and protected by the metallic end shield against emanating from the commutator of the engine noise is.
• the gear housing made of metal, preferably made of aluminum or an aluminum alloy.
• the suppression device of the electric drive consists of two inductors and three capacitors, the two inductors are arranged axially parallel to each other and the motor axis and combined with a, between their averted from the engine ports capacitor to a suppression module, which in the previously discussed manner in the transition region is arranged between the motor housing and the transmission housing.
• Show it 1 shows a longitudinal section through an inventive
• FIG. 2 is a schematic diagram of the invention
• FIG. 1 shows an electric windshield wiper drive for a motor vehicle is shown with an electric motor 10 and a transmission 12 for reducing the engine speed to a lower drive speed.
• the engine 10 is disposed in a motor housing 14 which
• the transmission 12 essentially consists of a drive worm 30 rotating with the drive shaft 20 of the motor 10, which meshes with a worm wheel 32, which in turn is fixedly connected to an output shaft 34.
• the gear housing is closed parallel to the cutting plane with a lid, not shown.
• a bearing plate 36 for an engine mount 21 which rests on a flange 38 of the motor housing and the latter with the exception of a recess 40 for the passage of the drive shaft 20 and another recess 42 covers through which two throttle coils 46 and 48 held in a plastic carrier 44 pass.
• the inductors 46 and 48 are arranged congruently one behind the other, so that in Figure 1, only one lying in the cutting plane coil is visible.
• first capacitor 50 which bridges the two inductors 46 and 48, as shown in Figure 2 circuit.
• capacitors 52 and 54 are also housed in the gear housing 16.
• the electrical connections between the inductors 46, 48 and the capacitors 50, 52, 54 are realized in a conventional manner by plug connections, the motor-side terminals of the choke coils 46 and 48 are connected via not shown strands with the brushes 26 and 28.
• the motor housing 14 is made of steel, the much more structured gear housing 16 is a casting, preferably made of aluminum, including the integrally formed bearing plate 36.
• the motor housing 14 is pot-shaped, so that the bearing plate 36 results in a substantially annular shape, which in Area of the engine mount 21 is bulged upward.
• the inductors 46 and 48 penetrate together with the plastic carrier 44, the end plate 36 side of the
• Shielding radiation is shielded, which arises in particular by sparking on the commutator 22.
• the two inductors 46 and 48 are axially parallel to each other and aligned with the motor axis and protrude with the greater part of their length in the motor housing 14, so that this part of the engine compartment can be used laterally of the brush holder 29 to reduce the size of the drive.
• Transition region from the motor housing 14 to the gear housing 16 for supporting the engine mount to the end plate 36 is attached.
• This likewise metallic, preferably made of steel bearing holder 56 covers at least the commutator 22 and thereby increases the shielding effect for the coil ends 47 and 49th
• FIG. 2 shows the block diagram of a permanent magnet excited electric motor 10, which is fed from a DC voltage network. Two different speeds for the motor 10 are obtained by optional connection of terminals 62 and 64 with the positive pole of the DC voltage network, whose Massepol is designated 60. The terminals 62 and 64 are connected via the choke coils 46 and 48 to the brush 26 for high speed and the brush 28 for the slow speed. The ground connection of the motor via the brush 24 and a
• Safety switch 74 which protects the motor 10 from overload and / or over temperature.
• the suppression device is completed by the capacitors 50, 52 and 54, wherein the first capacitor 50 between the two line-side terminals of the choke coils 46 and 48, while the capacitor 52 the line end of inductor 46 and capacitor 54 connect the line end of coil 48 to ground 60.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Mechanical Engineering (AREA)
• Motor Or Generator Frames (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39247114

Family Applications (1)

Country Status (6)

Families Citing this family (30)

Family Cites Families (8)

• 2007
  • 2007-01-19 DE DE102007002836A patent/DE102007002836A1/de active Pending
  • 2007-12-05 CN CN2007800501681A patent/CN101600605B/zh active Active
  • 2007-12-05 EP EP07847850A patent/EP2125458A1/de not_active Withdrawn
  • 2007-12-05 US US12/523,574 patent/US8026645B2/en not_active Expired - Fee Related
  • 2007-12-05 KR KR1020097015007A patent/KR20090101357A/ko not_active Application Discontinuation
  • 2007-12-05 WO PCT/EP2007/063359 patent/WO2008086917A1/de active Application Filing

Non-Patent Citations (1)

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