Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
• • 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
  • H02K23/62—Motors or generators with stationary armatures and rotating excitation field
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
  • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
  • B60T8/4018—Pump units characterised by their drive mechanisms
  • B60T8/4022—Pump units driven by an individual electric motor
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R39/00—Rotary current collectors, distributors or interrupters
  • H01R39/02—Details for dynamo electric machines
  • H01R39/04—Commutators
  • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
  • H02K13/006—Structural associations of commutators

Definitions

• the invention relates to a DC motor with a housing, with a rotor, and with a stator, which comprises electrical windings, wherein a commutator carbon brush system is provided to energize the electrical windings depending on the rotational position of the rotor - and wherein the stator Grips rotor, which comprises a shaft and permanent magnets.
• the Commutator is rotatably arranged, and that carbon brushes are provided, which are rotatable with the rotor and provided in the wear direction relative to the commutator.
• the DC motor according to the invention is provided with a fixed commutator, the carbon brushes rotating together with the rotor.
• the rotor is pot-shaped as a support body with a cup wall for holding the permanent magnets.
• the permanent magnets are non-rotatably attached to the radially outer pot wall.
• the carbon brushes are located in a pot interior and are arranged such that they can rotate relative to the rotor, but are linearly adjustable in the direction of the commutator.
• the carbon brushes are provided in a brush holder which is arranged integrated in the interior of the pot.
• a brush holder which is arranged integrated in the interior of the pot.
• This measure enables a simplified installation of the brush arrangement in the support body.
• this can be provided with a driver which engages in a form-fitting manner on a recess in the support body, or vice versa.
• the driver can, for example, be designed as a shoulder, projection, serration or the like, which engages positively in a recess, groove or the like on a counterpart, or engages non-positively on the counterpart.
• the brush holder is preferably made of a plastic material.
• the overall length of the DC motor is advantageously reduced in that the commutator is flat on a housing component of the electric motor and extends at right angles to the shaft, the carbon brushes being able to be tracked parallel to the shaft in the direction of the commutator. This design also minimizes the influence of centrifugal forces on the brush contact forces.
• the commutator carbon brush system comprises at least two oppositely charged carbon brushes, an electrical connection being provided between the oppositely charged carbon brushes. This electrical connection is particularly advantageously arranged integrated in the brush holder. In a further advantageous embodiment of the invention oppositely charged carbon brushes arranged diametrically opposite one another.
• a particularly space-saving arrangement is made possible if the center of the brush holder is hollow and if the housing component carrying the commutator additionally carries an interference suppression unit which at least partially protrudes into the hollow center of the brush holder.
• the oppositely charged carbon brushes are arranged diametrically opposite one another, one of the carbon brushes being provided in the center of the brush holder and the other of the carbon brushes being provided radially outside the center, and in that the brush holder has an integrated interference suppression unit , which is provided diametrically opposite to the carbon brush arranged radially outside.
• a wear-reduced carbon brush design with a precise brush guide is made possible if these have a round or polygonal, in particular cuboid cross-section, and the brush holder has profiled guides for the positive reception of the carbon brushes.
• the cover or motor pot carries a bearing for supporting the shaft in such a way that test operation of the motor is possible, and that bearing forces in regular operation of the motor can be introduced directly into a receiving body for receiving a driven element via this bearing.
• the warehouse is - at assembled motor - inserted into a stepped bore of the mounting body.
• the rotor manufacture is simplified if the shaft is connected in a rotationally fixed manner to the support body for the permanent magnets, the shaft being in particular form-fitting, force-fitting, material-fitting or integral with the supporting body.
• spring-loaded spring legs are provided between the commutator and the windings.
• the spring legs can either be attached to the windings or to the commutator bars or to a separate component provided between the windings and the commutator.
• the invention further relates to an electrohydraulic unit with the DC motor described above.
• Fig. 3 is a view in the direction of arrow III in Fig. 3, and
• Fig. 4 shows a further modified embodiment of the invention.
• a direct current motor 1 comprises a motor housing 2, a rotor 3 with a shaft 4 and a stator 5, which has electrical windings 6, a commutator carbon brush system being provided to energize the electrical windings 6, and wherein the stator 5 encompasses the rotor 3, which has the shaft 4 and permanent magnets 7, 8.
• the DC motor 1 is flanged to a receiving body (HCU) 9 for receiving a hydraulic pump.
• the DC motor 1 is used to drive the hydraulic pump.
• a fastening screw 10, which passes through the DC motor 1, is used to fasten the components together.
• the fastening screw 1 can extend through the receiving body 9 in order to serve at the same time for fastening an electronic control unit (ECU) 11. This is arranged on a side of the receiving body 9 opposite the direct current motor 1 and, in addition to controlling electrohydraulic valves, also serves to supply the direct current motor 1 with power.
• ECU electronice control unit
• the stator 5 has the cup-shaped, one-sided open motor housing 2 made of thin sheet metal, in which a winding support (sheet stack) 12 is fastened with the electrical windings 6, and which encompasses the rotor 3 at least over part of its length.
• a pot base 13 of the motor housing 2 has a collar 14 for receiving a bearing for rotor mounting
• the recess 16 is provided, which is used in particular for the passage of a plug-like supply element 17.
• the recess 16 can have a - direction receiving body 9 - collar 18 - similar to the collar 14 for the bearing 15 -.
• An open end of the motor housing 2 is arranged on a side opposite the output. This can be closed with a cover 19, which carries a stationary, flat commutator 20 (axial commutator), the main direction of extension of which is transverse to the shaft 4. No rotor bearing is provided on this side of the DC motor 1.
• the commutator 20 is a central component of the cover 19.
• the cover 19 is preferably made of an insulating plastic material and has a circumferential groove 21 for receiving a sealing element 22 which bears radially against an inner wall 23 of the motor housing 2.
• the windings 6 are connected to a power supply in the electronic control unit 11 via the plug-like supply element 17.
• the contact between winding 6 and connector 17 takes place on two tongues.
• the connector 17 has latching hooks 24, 25 for arresting, in that the latching hooks rest resiliently on the collar 18 of the motor housing 2.
• a radial seal 26 seals the connector 17 as shown in FIG. 2 with respect to the collar 18 or alternatively with respect to the receiving body 9.
• the circuit for the temporary energization of the windings 6 is closed via the commutator carbon brush system arranged downstream of the windings.
• the rotor 3 has a pot-shaped or turret-shaped support body 27 that is open on one side.
• the rotor drum can be designed as a drawn / pressed part to which the hardened and ground shaft 4 is welded.
• the permanent magnets 7, 8 are arranged on the pot wall 28 radially on the outside and are resistant to centrifugal force.
• the permanent magnets 7, 8 are preferably attached to the support body 27 by gluing or riveting. For example, 2, 4 or 6 magnetic poles are used.
• Inside the pot of the support body 27 there is a recess 29 which receives a brush holder 30 in the form of a simple plastic housing.
• the plastic housing 30 is preferably fixed to the support body 27 in a form-fitting manner with one or more drivers, and comprises two carbon brushes 31, 32 which are resiliently biased towards the commutator and which are in electrical contact with one another.
• the carbon brushes 31, 32 extend parallel to the shaft 4.
• the plastic housing according to FIGS. 1 and 2 is recessed in the center. Provided in the recess 33 on the interference suppression unit 39, which are electrically connected at least to the + brush.
• the carbon brushes 31, 32 are arranged diametrically to one another in order to keep unbalance effects low.
• one of the carbon brushes 31 ' is provided centrally, and the other carbon brush 32' is placed radially offset from it.
• the recess for the interference suppression unit 39 - which preferably comprises a capacitor and or coils - is located diametrically opposite the radially outer carbon brush 32 '.
• the rotor 3 is supported in all embodiments completely in the receiving body 9, on the one hand with the help of the already mentioned bearing 15 (rolling bearing) and with the help of a further rolling bearing 34, which is inserted into a stepped bore 35 of the receiving body 9 and supports the shaft end , As a result, an eccentric 36 with an eccentric bearing 37 is clamped in a defined manner between the two bearings 34, 15.
• a drive element small propeller
• a propeller 38 can be arranged on the end face of the shaft 4, which is attached to the shaft 4 in a form-fitting manner with the aid of a notched nail.
• the embodiment according to FIG. 4 differs only from FIGS. 1 and 2 in that the pot base 13 of the motor housing 2 is designed as a bearing plate 41 with an integrated commutator 20, while the one-piece molded pot base is located on a side opposite the output, and that the stepped bore 35 is formed like a blind hole.
• the carbon brushes are arranged on the inside and axially
• the permanent magnets are attached to the rotor
• the winding head forms the stator
• the rotor has a drum shape
• the brush holder optionally accommodates interference suppression elements (main direction of extension axially)
• An essential advantage of the invention is that automatic electrical contacting between components is made possible by the fact that commutator 20 and windings 6 are not offset radially to one another, but are arranged axially offset from one another, and are joined together in an axially directed manner.
• the brush holder 30 comes into the pot-shaped support body 27 and after completion, the support body 27 is welded to the shaft 4.
• Another important advantage of the invention is that the rotor is mounted on the driven side of the shaft 4, while the opposite end of the shaft 4 projects freely, and holds an internally hollow support body 27 for permanent magnets 7, 8, the hollow sections of the support body 27 for the arrangement of axially directed carbon brushes 31, 32 can be used.
• the invention is not limited to a direct current motor in the sense of partial protection, but also extends to a complete electrohydraulic unit for a slip-controlled brake system with driving stability control, including the receiving body 9 for hydraulic components, including an electronic control unit 11 with electronic components and preferably with one Power level for the DC motor described above, which is provided for driving a fluid pump (brake fluid pump).

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Dc Machiner (AREA)
• Motor Or Generator Current Collectors (AREA)
• Motor Or Generator Frames (AREA)
• Valves And Accessory Devices For Braking Systems (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=34395052

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (5)

• 2004
  • 2004-09-24 KR KR1020067005933A patent/KR20060090673A/ko not_active Application Discontinuation
  • 2004-09-24 WO PCT/EP2004/052299 patent/WO2005031949A1/de active Application Filing
  • 2004-09-24 EP EP04766852A patent/EP1668765A1/de not_active Withdrawn
  • 2004-09-24 US US10/573,219 patent/US20070035194A1/en not_active Abandoned
  • 2004-09-24 JP JP2006527426A patent/JP2007507198A/ja not_active Withdrawn

Non-Patent Citations (1)

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