Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
  • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
  • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
  • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
• • 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
  • H02K7/08—Structural association with bearings
  • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2220/00—Electrical machine types; Structures or applications thereof
  • B60L2220/40—Electrical machine applications
  • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2270/00—Problem solutions or means not otherwise provided for
  • B60L2270/10—Emission reduction
  • B60L2270/14—Emission reduction of noise
  • B60L2270/145—Structure borne vibrations
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
  • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/64—Electric machine technologies in electromobility

Definitions

• the invention relates to an arrangement according to the preamble of claim 1.
• a wheel hub drive or a wheel hub motor is a motor that is installed directly in a wheel of a vehicle.
• electric motors are usually used for a wheel hub drive.
• a major advantage of electric wheel hub drives is the elimination of the classic drive train. Typically, wheel hub motors are only supported on one side.
• the mechanical system of a wheel hub motor has only a low tilting rigidity.
• the low tilting rigidity results in higher relative movements of the rotating and stationary components under load to one another.
• the relative movements in turn lead to contact of the rotating and stationary components and thus can cause damage.
• transverse accelerations for example when cornering and / or during resonant excitations through the roadway, such defective contact with the components can occur.
• Fahrzeu ⁇ gen with a filigree suspension geometry the effects mentioned.
• the present invention is therefore an object of the invention to provide a wheel hub drive, which reduces the damage of touch.
• the wheel hub drive according to the invention comprises a Elektromo ⁇ tor, wherein the electric motor comprises a stator and a sleeve-shaped rotor.
• the electric motor comprises a stator and a sleeve-shaped rotor.
• a coaxially aligned with the rotor ring structure is arranged on at least one of the rotor in the axial direction limiting plane surface.
• OF INVENTION ⁇ dung has, according to the ring structure to a smaller Gleitrei ⁇ bung coefficient than a limiting plane surface of the rotor.
• the wheel hub drive according to the invention has the advantage that upon contact of the rotor with another component of the wheel hub drive, the defectiveness of the contact is greatly reduced by the smaller sliding friction coefficient of the ring structure.
• the Gleitrei ⁇ bung coefficients of the ring structure is smaller, in particular GR sentlich smaller than the limiting end face of the rotor so that upon contact of the rotor to other components under load are no significant damage to the rotor and / or on the contact member.
• rotating sliding layer which is formed by the ring structure with Klei ⁇ neren sliding friction coefficient, the mechanical structure of example housing and storage in a reasonable mass and volume ratio based on the performance can be designed. Also, the necessary
• Stiffness and / or strength of the rotor is not affected by the ring ⁇ structure. According to the invention, therefore, touching the components is not exclusively prevented, but the damage of the contact of the components vermin ⁇ changed.
• advantageous ⁇ adhesive enough the installation space of the wheel hub drive is reduced as a whole. Splintering and / or scarring on the rotor are advantageously avoided by the ring structure attached to the rotor and associated with the rotor.
• the ring structure is positively and / or non-positively connected to the rotor.
• the ring structure is connected by means of screw connections to the rotor, wherein at least a portion of the ring structure has an axial projection with respect to the screw connections.
• a frictional connection between the ring structure and rotor is provided by the screw connections, which withstands the loads during contact of the rotor or the ring structure with another component.
• the ring structure has an axial projection with respect to the screw connections, so that contact between stationary components and the screw connections is avoided. This reduces damage to the rotor and other components.
• Senknuten may be incorporated in the ring structure, so that by means of countersunk screws ⁇ the axial projection of the ring structure is possible.
• the ring structure is connected by means of clip connections to the rotor.
• the ring structure comprises the material Teflon.
• Teflon has an extremely low coefficient of sliding friction, so that damage that occurs in contact between the sliding surfaces (ring structure) and another component can be significantly reduced.
• the sliding friction coefficient of the ring structure with respect to a Ge ⁇ housing is less than 0.04.
• the housing expediently comprises the rotor and / or stator.
• an inner and outer diameter of the ring structure have a magnitude difference of at most 10 mm.
• the ring structure is thereby formed as a thin ⁇ ner ring disc-like, so that the Bauraumbe ⁇ may, which results from the additional ring structure, can be kept as low as possible.
• the ring structure to a coating, wherein a sliding frictional coefficient of the coating is less ⁇ , especially Wesent ⁇ Lich less than the sliding friction coefficient of the ring structure.
• this additionally improves the sliding friction properties of the ring structure compared to the limiting plane surfaces of the rotor.
• Figure 1 shows a non-contact operation of a wheel hub drive
• Figure 2 illustrates a contact of components under load
• Figure 3 shows a schematic representation of a ring structure.
• FIG. 1 shows a section of a wheel hub drive 1 along an axis of rotation 8 (axial direction), the wheel hub drive 1 comprising an electric motor with a stator 2 and a rotor 4.
• the stator 2 and the rotor 4 are within a housing 14, which in turn within a
• Rim 16 is located. For clarity, only one wheel with a tire 18 is shown. In general, all Rä ⁇ of a vehicle, not shown, can be provided with the illustrated in Figure 1 wheel hub drive. 1
• the tire 18 rotates about the axis of rotation 8.
• the rotor 4 is torque ⁇ conclusively connected to a bolt circle 6 of the rim 16, wherein the bolt circle 6 and the rim 16 are arranged coaxially to the axis of rotation 8 ⁇ .
• the bolt circle 6 is in turn torque-connected via rim bolts (not shown) to the rim 16, the rim 16 driving the tire 18.
• the housing 14 additionally has at least one housing cover 26.
• the rotor 4 and the bolt circle 6 are supported by a pivot bearing 20.
• a ring structure 10 is arranged in each case. To save space, it is advantageous air gaps, for example between rotor 4 and
• Stator 2 and / or between rotor 4 and housing 14 to keep as small as possible.
• contact between components, for example rotor 4 and housing 14 can only be avoided with difficulty during a load.
• the ring structure 10 is provided according to the invention.
• Figure 2 shows a contact 22, 24 of the ring structure 10 with the housing 14 or the housing cover 26. Occurs under a load of the wheel hub drive, for example, by vibrations on a tilting of the rotor 4, so touch
• Ring structure 10 and housing 14 or housing cover 26 at the contact points 22, 24 Due to the particularly good sliding properties of the ring structure 10, the damage to the Be Reaching points 22, 24 kept as low as possible.
• the rotor 4 is not in direct contact with the housing 14 or the housing cover 26 during a tilting stress.
• the ring structure 10 is mainly stressed by the friction forces.
• damage to the rotor 4 or other components during a tilting load is advantageously avoided.
• the ring structure 10 thus forms a Notlauf orraum.
• FIG. 3 shows a schematic representation of the ring structure 10.
• the ring structure 10 has an inner diameter 28 and an outer diameter 30.
• the difference in magnitude of the inner and outer diameters 28, 30 is less than or equal to 10 mm.
• the keptrelie- 10 has as a thin disc 10 te ring structure has a plurality of Senknuten 34 which are regularly over a surface 32 of the ring structure 10 divides ⁇ ver.
• the Senknuten 34 allow a positive and / or non-positive attachment of the ring structure 10 to the rotor 4 by means of countersunk screws.
• 10 is provided with a material to be ⁇ layers that a lower coefficient of sliding friction than said ring structure 10.
• the ring structure 10 can be advantageously manufactured at low cost by injection molding with little technical effort, the surface 32 of the ring structure.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Rolling Contact Bearings (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=51862266

Family Applications (1)

Country Status (6)

Families Citing this family (7)

Citations (1)

Family Cites Families (19)

• 2013
  • 2013-10-31 DE DE201310222229 patent/DE102013222229A1/de not_active Withdrawn
• 2014
  • 2014-10-23 US US15/033,822 patent/US20160301280A1/en not_active Abandoned
  • 2014-10-23 JP JP2016550979A patent/JP2016539620A/ja not_active Ceased
  • 2014-10-23 EP EP14793478.0A patent/EP3053254A1/de not_active Withdrawn
  • 2014-10-23 WO PCT/EP2014/072715 patent/WO2015062957A1/de active Application Filing
  • 2014-10-23 CN CN201480064625.2A patent/CN105765830A/zh active Pending

Patent Citations (1)

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