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DE19837270A1 - Electric wheel hub motor without gearing for wheel chair and other small vehicles, has hydraulically activated wheel hub brake - Google Patents

Electric wheel hub motor without gearing for wheel chair and other small vehicles, has hydraulically activated wheel hub brake

Info

Publication number
DE19837270A1
DE19837270A1 DE19837270A DE19837270A DE19837270A1 DE 19837270 A1 DE19837270 A1 DE 19837270A1 DE 19837270 A DE19837270 A DE 19837270A DE 19837270 A DE19837270 A DE 19837270A DE 19837270 A1 DE19837270 A1 DE 19837270A1
Authority
DE
Germany
Prior art keywords
wheel hub
brake
hub motor
hydraulic
electric wheel
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19837270A
Other languages
German (de)
Inventor
Martin Henning
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19837270A priority Critical patent/DE19837270A1/en
Publication of DE19837270A1 publication Critical patent/DE19837270A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1021—Wheelchairs having brakes engaging specific brake elements
    • A61G5/1027—Hub elements, e.g. drums
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1032—Wheelchairs having brakes engaging an element of the drive or transmission, e.g. drive belt, electrodynamic brake
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
    • 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
    • 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
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/22—Microcars, e.g. golf cars
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/34—Wheel chairs
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/50—Structural details of electrical machines
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Veterinary Medicine (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)

Abstract

The motor includes an outside running rotor (10), and a wheel hub brake which is hydraulically activated. The wheel hub brake is arranged preferably around the center of the wheel hub motor, and is connected with a stator (14) of the motor, and, if necessary, a receiving casing (18). A central hydraulic pump, activated by an electro-magnet, is fastened to the frame of the wheelchair or vehicle, and controls two brakes hydraulically.

Description

Die Erfindung betrifft die Baueinheit eines elektrischen Radnabenmotors ohne Getriebe mit außen laufendem Rotor und einer hydraulisch betätigten Bremse insbesondere zum Antrieb von Rollstühlen und anderen Kleinfahrzeugen, wobei im allgemeinen zwei angetriebene Räder mit je einem Radnabenmotor versehen sind.The invention relates to the structural unit of an electric wheel hub motor without a gear external rotor and a hydraulically operated brake, especially for driving of wheelchairs and other small vehicles, generally two powered Wheels are each provided with a wheel hub motor.

Aus der DE-PS 41 27 257 C2, der DE 195 00 589 A1 und EP 0 699 550 B1 sind bereits Radnabenantriebe für Rollstühle bekannt. Diese Motoren haben alle im Zetrum eine elektomagnetisch gelüftete Federdruckbremse eingebaut. Nachteilig ist hier das klackende Geräusch der Bremse beim Betätigen, sowohl beim Einschalten wie beim Ausschalten.From DE-PS 41 27 257 C2, DE 195 00 589 A1 and EP 0 699 550 B1 are already Known wheel hub drives for wheelchairs. These motors all have one in the center Electromagnetically released spring pressure brake installed. The disadvantage here is the clicking Brake noise when actuating, both when switching on and when switching off.

Bei Stromausfall werden diese Art von Bremsen mit einer aufwendigen Mechanik gelüftet. Behinderte sind oft auch mit Ihren Händen in der Beweglichkeit eingeschränkt und haben daher Probleme, diese Mechanik zu bedienen. Außerdem wirkt die Mechanik immer nur auf ein Rad, so daß die Mechanik an jedem Rad separat betätigt werden muß.In the event of a power failure, these types of brakes are released with complex mechanics. Disabled people are often limited with their hands and have mobility therefore problems to operate this mechanism. In addition, the mechanics always only act a wheel, so that the mechanics on each wheel must be operated separately.

Die Konstruktion dieser Art von Bremsen muß wegen der magnetischen Eigenschaften immer aus Stahl in einer massiven Bauform hergestellt werden. Bei Rollstühlen oder ähnlichen Kleinfahrzeugen ist aber das Gewicht von Bedeutung, da sie batteriebetrieben sind, bzw. oft von Frauen oder schwächeren Personen gehandhabt, d. h. zusammengeklappt und im Kofferraum transportiert werden.The construction of this type of brakes must be because of the magnetic properties always be made of steel in a solid design. For wheelchairs or Similar small vehicles, the weight is important because they are battery operated are, or are often handled by women or weaker persons, d. H. folded and transported in the trunk.

Der Erfindung liegt nun die Aufgabe zugrunde, einen elektrischen Antrieb vorzugsweise für Rollstühle und andere Kleinfahrzeuge zu schaffen, bestehend aus einem direkt auf ein Antriebsrad wirkenden, getriebelosen Radnabenmotor mit außen laufendem Rotor in Baueinheit mit einer hydraulisch betätigten Bremse und einer zentral am Rollstuhl angebauten mit einem Elektromagnet federbetätigte Hydraulikpumpe.The invention is based on the object, preferably for an electric drive To create wheelchairs and other small vehicles consisting of one directly on one Drive wheel-acting, gearless wheel hub motor with external rotor in Unit with a hydraulically operated brake and one centrally on the wheelchair attached hydraulic pump with spring operated electromagnet.

Die gestellte Aufgabe wird nun mit einem elektrischen Radnabenmotor erfindungsgemäß durch die Merkmalskombinationen der kennzeichnenden Teile des Hauptanspruchs gelöst.The object is now achieved with an electric wheel hub motor solved by the combinations of features of the characterizing parts of the main claim.

Der erfindungsgemäß ausgebildete Radnabenmotor hat den Vorteil, daß für die aus Sicherheitsgründen notwendige hydraulische Bremse beim Ein- und Ausschalten, bedingt durch die hydraulische Betätigung, keine Geräusche entstehen.The wheel hub motor designed according to the invention has the advantage that for the Hydraulic brake necessary for safety reasons when switching on and off due to the hydraulic actuation, no noise is generated.

Eine mit einem Elektromagnet federbetätigte Hydraulikpumpe wird am Rahmen des Rollstuhls befestigt und versorgt über flexible Kunststoffleitungen beide Hydraulikbremsen mit Hydrauliköl. Eine oder mehrere Federn drücken auf die Hydraulikpumpe (Kolben), das sich dort befindende Hydrauliköl strömt über zwei getrennt verlegte flexible Schläuche zu den hydraulischen Radnabenbremsen. Beim Bremsvorgang wird Hydrauliköl in den Ringkolbenraum gepumpt und betätigt damit die Ringkolben. Die Ringkolben werden somit axial verschoben und drücken über eine Scheibe auf den mit dem Rotor drehenden Reibbelag.A hydraulic pump spring-operated with an electromagnet is attached to the frame of the Wheelchair attached and supplies both hydraulic brakes via flexible plastic lines with hydraulic oil. One or more springs press on the hydraulic pump (piston) that Hydraulic oil located there flows in via two separately laid flexible hoses the hydraulic wheel hub brakes. When braking, hydraulic oil is in the Pumped annular piston chamber and thus actuates the annular piston. The ring pistons are thus axially shifted and press on a disc on the rotating with the rotor Friction lining.

Wenn der Rollstuhl oder das Kleinfahrzeug elektrisch in Bewegung gesetzt werden, wird der Elektromagnet elektrisch betätigt. Er zieht den Pumpenkolben an, woduch das Hydrtauliköl aus den Ringkolbenraum über die flexiblen Schläuche zurück zur Hydraulikpumpe gesaugt wird. Der Druck auf den Reibbelag wird abgebaut und die Bremse ist gelüftet.If the wheelchair or the small vehicle is set in motion electrically, the Electromagnet operated electrically. He pulls the pump piston, which causes the hydraulic oil sucked from the annular piston chamber back to the hydraulic pump via the flexible hoses becomes. The pressure on the friction lining is released and the brake is released.

Der Kolben der hydraulischen Bremse ist als Ringkolben ausgebildet und wird mit zwei O- Ringen am Umfang abgedichtet. Das Hydraulikgehäuse sowie der Ringkolben der hydraulischen Bremse kann aus jedem festen Nichteisenwerkstoff gefertigt werden, was enorme Gewichtseinsparung bringen kann. The piston of the hydraulic brake is designed as an annular piston and is fitted with two O- Rings sealed around the circumference. The hydraulic housing and the ring piston of the  hydraulic brake can be made of any solid non-ferrous material what can bring enormous weight savings.  

Detaillierte Beschreibung der PatentanmeldungDetailed description of the patent application

Nachfolgend wird ein Ausführungsbeispiel für einen erfindungsgemäß ausgebildeten Radnabenmotor mit hydraulischer Bremse anhand der beiliegenden Zeichnungen dargestellt.An exemplary embodiment of a design according to the invention is described below Wheel hub motor with hydraulic brake using the enclosed drawings shown.

Fig. 1 zeigt einen Längsschnitt durch einen Radnabenmotor mit hydraulischer Bremse. Fig. 1 shows a longitudinal section through a wheel hub motor with a hydraulic brake.

Fig. 2 zeigt einen Längsschnitt durch eine mit einem Elektromagnet federbetätigte Hydraulikpumpe. Fig. 2 shows a longitudinal section through a hydraulic pump spring-actuated with an electromagnet.

Fig. 3 zeigt die Seitenansicht einer mit einem Elektromagnet federbetätigten Hydraulikpumpe mit schematisch dargestelltem Handhebel zur Notlüftung der hydraulischen Bremse. Fig. 3 shows the side view of a spring-operated hydraulic pump with an electromagnet with a schematically illustrated hand lever for emergency release of the hydraulic brake.

Beschreibung Fig. 1Description Fig. 1 Hydraulische RadnabenbremseHydraulic wheel hub brake

Fig. 1 zeigt wie die hydraulische Bremse im Radnabenmotor angeordnet ist. Der Rotor 10 dreht sich um den feststehenden Stator 14 mit den Spulen 15. Gelagert ist der Rotor mit den Kugellagern 11 und 12 auf der Achse 13 und der Kugellageraufnahme 10.1 des Rotors. Der magnetische Antrieb des Radnabenmotors erfolgt über den Stator 14 mit den Magnetspulen 15 als feststehender Teil, sowie über den drehenden Rotor 10 mit den Permanentmagneten 16. Fig. 1 shows how the hydraulic brake is arranged in the wheel hub motor. The rotor 10 rotates around the fixed stator 14 with the coils 15 . The rotor is supported with the ball bearings 11 and 12 on the axis 13 and the ball bearing seat 10.1 of the rotor. The magnetic drive of the wheel hub motor takes place via the stator 14 with the magnetic coils 15 as a fixed part, and via the rotating rotor 10 with the permanent magnets 16 .

In einem Aufnahmegehäuse 18, das mit dem Stator 14 zentrisch und starr verbunden ist, ist das hydraulische Bremsengehäuse 19 über die Schrauben 25 befestigt und um das Zentrum des Motors angeordnet. Im Zentrum des Bremsgehäuses ist ein Ringkolben 21 angeordnet, der über die O-Ringe 20 öldicht abgedichtet ist. Der Ringkolben 21 drückt gegen die Scheibe 22, die über die Schrauben 25 gegen Verdrehung gesichert ist, auf den Reibbelag 23. Der Reibbelag 23 wird so zwischen den Scheiben 24 und 22, die beide über die Schrauben 25 gegen Verdrehung gesichert, aber axial verschiebbar sind, eingeklemmt. Bei Druck auf den Ringkolben 21 durch einströmendes Hydrauliköl wird damit der Rotor abgebremst.In a receptacle housing 18 , which is connected to the stator 14 centrally and rigidly, the hydraulic brake housing 19 is fastened via the screws 25 and arranged around the center of the motor. In the center of the brake housing, an annular piston 21 is arranged, which is sealed oil-tight via the O-rings 20 . The annular piston 21 presses against the disk 22 , which is secured against rotation by the screws 25 , on the friction lining 23 . The friction lining 23 is thus clamped between the disks 24 and 22 , both of which are secured against rotation by the screws 25 , but are axially displaceable. When pressure is applied to the annular piston 21 by inflowing hydraulic oil, the rotor is braked.

Der Reibbelag 23 ist mit dem Rotor 10 und der Kugellageraufnahme 10.1 über ein Sechskant-Profil gegen Verdrehung, axial verschiebbar, verbunden. Das Bremsmoment wird so auf den Rotor 10 übertragen. The friction lining 23 is connected to the rotor 10 and the ball bearing receptacle 10.1 via a hexagon profile against rotation, axially displaceable. The braking torque is thus transmitted to the rotor 10 .

Beschreibung Fig. 2Description Fig. 2 Zentrale HydraulikpumpeCentral hydraulic pump

Fig. 2 stellt dar, wie die mit einem Elektromagnet federbetätigte Hydraulikpumpe arbeitet. Fig. 2 shows how the hydraulic pump spring-operated with an electromagnet works.

Diese Pumpe kann an beliebiger Stelle am Rollstuhl oder Kleinfahrzeug angebracht sein, und stellt so eine individuell bedienungsfreundliche Lösung dar.This pump can be attached anywhere on the wheelchair or small vehicle and thus represents an individually user-friendly solution.

Bei stromlosem Elektromagnet schieben die Federn 30 die Federaufnahme 31 mit dem Pumpenkolben 31.2 gegen das Hydrauliköl im Ölraum 43 und verdrängen dieses über den flexiblen Schlauch 26 in den Ringkolbenraum der hydraulischen Bremse. Damit ist die Bremsfunktion die Ruhestellung.When the electromagnet is de-energized, the springs 30 push the spring receptacle 31 with the pump piston 31.2 against the hydraulic oil in the oil chamber 43 and displace it via the flexible hose 26 into the annular piston chamber of the hydraulic brake. The braking function is thus the rest position.

Um die Hydraulikbremse zu lüften, wird der Elektromagnet 27 elektrisch beaufschlagt. Der Anker 29 vom Elektromagnet 27 wird in den Elektromagnet 27 gezogen, wodurch die Federn 30 zusammengedrückt werden.In order to release the hydraulic brake, the electromagnet 27 is acted upon electrically. The armature 29 from the electromagnet 27 is pulled into the electromagnet 27 , whereby the springs 30 are compressed.

Über die Verbindungsstange 31.1 der Federaufnahme 31 und den Pumpenkolben 31.2, die mit dem Anker 29 axial verbunden sind, wird das Hydrauliköl über den flexiblen Schlauch 26 aus der Hydraulikbremse in den Ölraum 43 gesaugt. Der Ringkolben 21 wird druckentlastet, die hydraulische Bremse ist gelüftet. Der Pumpenkolben 31.2 ist über den O-Ring 32 öldicht abgedichtet. Via the connecting rod 31.1 of the spring mount 31 and the pump piston 31.2 , which are axially connected to the armature 29 , the hydraulic oil is sucked out of the hydraulic brake into the oil space 43 via the flexible hose 26 . The annular piston 21 is relieved of pressure, the hydraulic brake is released. The pump piston 31.2 is sealed oil-tight via the O-ring 32 .

Beschreibung Fig. 3Description Fig. 3 Handhebel zur NotlüftungHand lever for emergency ventilation

Bei Stromausfall oder bei entleerter Batterie befinden sich die hydraulischen Bremsen über die Federn 30 in Bremsfunktion. Um den Rollstuhl oder das Kleinfahrzeug auch bei Stromausfall bewegen zu können, müssen die Bremsen über eine Handbetätigung gelüftet werden können.In the event of a power failure or when the battery is empty, the hydraulic brakes are in braking function via the springs 30 . In order to be able to move the wheelchair or small vehicle even in the event of a power failure, the brakes must be able to be released using a manual control.

Fig. 3 zeigt schematisch wie diese Handlüftung der hydraulischen Bremse über die mit einem Elektromagnet federbetätigte Hydraulikpumpe arbeitet. Fig. 3 shows schematically how this manual release of the hydraulic brake works via the hydraulic pump spring-actuated with an electromagnet.

Der Hebel 36, geführt über das Lager 37 wird von Hand betätigt. Über das Gegenlager 44 wird die Federaufnahme 31, verbunden mit dem Pumpenkolben 31.2, bewegt. Die Federn 30 werden zusammengedrückt, das Hydrauliköl wird über die flexiblen Schläuche 26 in den Ölraum 43 gesaugt und entlastet so den Ringkolben 21, womit die hydraulische Bremse gelüftet ist.The lever 36 , guided over the bearing 37 is operated by hand. The spring mount 31 , connected to the pump piston 31.2 , is moved via the counter bearing 44 . The springs 30 are compressed, the hydraulic oil is sucked into the oil space 43 via the flexible hoses 26 and thus relieves the annular piston 21 , whereby the hydraulic brake is released.

Nach Bewegung des Hebels 36 rastet der Schnapphebel 41, geführt über das Lager 40, in das Gegenlager 42 ein und ist so gesichert. Der Rollstuhl oder das Kleinfahrzeug kann von Hand bewegt werden.After movement of the lever 36, the snap lever 41 , guided over the bearing 40 , engages in the counter bearing 42 and is thus secured. The wheelchair or small vehicle can be moved by hand.

Der Endschalter 35 unterbricht bei Handlüftung der Bremse die Stromzufuhr, sodaß der Handhebel auch zum Umschalten von Elektro- auf Handbetrieb dient.The limit switch 35 interrupts the power supply when the brake is released manually, so that the hand lever also serves to switch from electrical to manual operation.

Soll die Handnotlüftung ausser Kraft gesetzt werden, so wird über den Druckknopf 38 der Hebel 39 bewegt. Der wiederum drückt auf den Schnapphebel 41, geführt über das Lager 40. Der Hebel 36 kann in die Ausgangsstellung geschoben werden. Die Federn 30 drücken die Federaufnahme 31, verbunden mit dem Pumpenkolben 31.2, in den Ölraum 43, das Hydrauliköl wird über den flexiblen Schlauch 26 zur hydraulischen Bremse geleitet und drückt auf den Kolben 21. Der Endschalter wird ebenfalls betätigt, so daß die Stromzufuhr eingeschaltet ist.If the manual emergency release is to be deactivated, the lever 39 is moved via the push button 38 . The latter in turn presses on the snap lever 41 , guided over the bearing 40 . The lever 36 can be pushed into the starting position. The springs 30 press the spring receptacle 31 , connected to the pump piston 31.2 , into the oil space 43 , the hydraulic oil is conducted to the hydraulic brake via the flexible hose 26 and presses on the piston 21 . The limit switch is also operated so that the power supply is switched on.

Claims (9)

1. Elektrischer Radnabenmotor ohne Getriebe mit außen laufendem Rotor zum Antrieb von Rollstühlen und anderen Kleinfahrzeugen; und einer Radnabenbremse, dadurch gekennzeichnet, daß die Radnabenbremse hydraulisch betätigbar ist und vorzugsweise um das Zentrum des Radnabenmotors angeordnet ist und mit einem Stator 14 des Motors und ggf. einem Aufnahmegehäuse 18 verbunden ist.1. Electric wheel hub motor without gear with external rotor for driving wheelchairs and other small vehicles; and a wheel hub brake, characterized in that the wheel hub brake can be actuated hydraulically and is preferably arranged around the center of the wheel hub motor and is connected to a stator 14 of the motor and possibly a receiving housing 18 . 2. Elektrischer Radnabenmotor nach Anspruch 1, dadurch gekennzeichnet, daß am Rahmen eines Rollstuhls oder einem anderen Kleinfahrzeug eine zentrale, über einen Elektromagnet federbetätigte Hydraulikpumpe befestigt ist, die in der Regel zwei Bremsen hydraulisch steuert.2. Electric wheel hub motor according to claim 1, characterized in that on A central, over frame of a wheelchair or other small vehicle an electromagnet spring-mounted hydraulic pump is attached, which is usually hydraulically controls two brakes. 3. Elektrischer Radnabenmotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die hydraulischen Bremsen, in der Regel zwei, die über einen mit Elektromagnet federbetätigte Hydraulikpumpe gesteuert werden, über eine zentrale Handbetätigung (Hebel) gelüftet werden können.3. Electric wheel hub motor according to claim 1 or 2, characterized in that the hydraulic brakes, usually two that have one with Electromagnet spring operated hydraulic pump can be controlled via a central manual control (lever) can be released. 4. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der hydraulische Druckaufbau, gesteuert durch die mit einem Elektromagnet federbetätigte Hydraulikpumpe langsam erfolgt und die hydraulische Bremse (nach Fig. 1) den Rotor 10 abbremst (ähnlich wie eine Autobremse).4. Electric wheel hub motor according to one of the preceding claims, characterized in that the hydraulic pressure build-up, controlled slowly by the spring-operated hydraulic pump with an electromagnet, and the hydraulic brake (according to FIG. 1) brakes the rotor 10 (similar to a car brake). 5. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die hydraulische Bremse die Fertigungstoleranzen ausgleicht und beide hydraulische Bremsen gleichmäßig arbeiten, sodaß Rollstuhl oder Kleinfahrzeug beim Bremsvorgang nicht die Richtung verlieren.5. Electric wheel hub motor according to one of the preceding claims, characterized in that the hydraulic brake the manufacturing tolerances compensates and both hydraulic brakes work equally, so Do not lose your wheelchair or small vehicle's direction when braking. 6. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die hydraulische Bremse beim Einschalten und beim Ausschalten keine Schaltgeräusche abgibt.6. Electric wheel hub motor according to one of the preceding claims, characterized in that the hydraulic brake when turned on and makes no switching noises when switched off. 7. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse 19 und der Ringkolben 21 sowie die Scheibe 22 und auch die Scheibe 24 aus einem Nichteisenmaterial hergestellt werden können, was große Gewichtseinsparung bringen kann.7. Electric wheel hub motor according to one of the preceding claims, characterized in that the housing 19 and the annular piston 21 and the disc 22 and also the disc 24 can be made of a non-ferrous material, which can bring great weight savings. 8. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Radnabenbremse durch ein elastisches Element vorgespannt ist (die durch Federdruck in Eingriff kommt) und derart ausgestaltet ist, daß sie hydraulisch gelüftet werden kann, z. B. eine federbetätigte Einscheibenbremse, die hydraulisch gelüftet wird.8. Electric wheel hub motor according to one of the preceding claims, characterized in that the wheel hub brake by an elastic Element is biased (which engages by spring pressure) and such is designed so that it can be released hydraulically, for. Legs spring-operated single-disc brake that is hydraulically released. 9. Elektrischer Radnabenmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Radnabenbremse ähnlich wie bei einer Autoscheibenbremse mit wenigstens einem Bremsklotz und vorzugsweise einem Bremssattel ausgestattet ist, der im Wesentlichen kräfteneutral die Bremswirkung auf vorzugsweise eine Stahlbremsscheibe überträgt.9. Electric wheel hub motor according to one of the preceding claims, characterized in that the wheel hub brake similar to a Car disc brake with at least one brake pad and preferably one  Brake caliper is equipped, which essentially neutralizes the braking effect preferably transmits to a steel brake disc.
DE19837270A 1998-08-17 1998-08-17 Electric wheel hub motor without gearing for wheel chair and other small vehicles, has hydraulically activated wheel hub brake Withdrawn DE19837270A1 (en)

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DE19837270A DE19837270A1 (en) 1998-08-17 1998-08-17 Electric wheel hub motor without gearing for wheel chair and other small vehicles, has hydraulically activated wheel hub brake

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DE19837270A DE19837270A1 (en) 1998-08-17 1998-08-17 Electric wheel hub motor without gearing for wheel chair and other small vehicles, has hydraulically activated wheel hub brake

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20116131U1 (en) 2001-10-01 2001-12-20 Ortlinghaus Gmbh Gams, Gams Spring-loaded brake for bikes without or with gearless travel drives
EP1796796A2 (en) * 2004-08-04 2007-06-20 Heeling Sports Limited Motorized transportation apparatus and method
DE102009038928A1 (en) 2009-08-26 2010-11-04 Schaeffler Technologies Gmbh & Co. Kg Electric motor e.g. ring motor, for use as wheel hub motor in e.g. car, has stator, rotor and air gap, where air gap is formed between stator and rotor, and size of gap is variable depending on number of revolutions of motor
WO2011069873A3 (en) * 2009-12-07 2011-09-22 Schaeffler Technologies Gmbh & Co. Kg Wheel hub drive unit
WO2014183896A1 (en) * 2013-05-17 2014-11-20 Robert Bosch Gmbh Power wheel for a vehicle
CN105496668A (en) * 2014-09-26 2016-04-20 广东凯洋医疗科技集团有限公司 Hub fast clutch device for electric wheelchair
CN108128144A (en) * 2017-12-10 2018-06-08 山东理工大学 A kind of In-wheel motor driving wheel equipped with brake apparatus
CN111082597A (en) * 2018-10-19 2020-04-28 奥的斯电梯公司 Motor and elevator system
WO2023183399A1 (en) * 2022-03-24 2023-09-28 Rehrig Pacific Company Hub motor with integrated brake

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20116131U1 (en) 2001-10-01 2001-12-20 Ortlinghaus Gmbh Gams, Gams Spring-loaded brake for bikes without or with gearless travel drives
EP1796796A2 (en) * 2004-08-04 2007-06-20 Heeling Sports Limited Motorized transportation apparatus and method
EP1796796A4 (en) * 2004-08-04 2009-02-25 Heeling Sports Ltd Motorized transportation apparatus and method
US7610972B2 (en) 2004-08-04 2009-11-03 Heeling Sports Limited Motorized transportation apparatus and method
DE102009038928A1 (en) 2009-08-26 2010-11-04 Schaeffler Technologies Gmbh & Co. Kg Electric motor e.g. ring motor, for use as wheel hub motor in e.g. car, has stator, rotor and air gap, where air gap is formed between stator and rotor, and size of gap is variable depending on number of revolutions of motor
EP2927529A1 (en) * 2009-12-07 2015-10-07 Schaeffler Technologies GmbH & Co. KG Wheel hub drive unit
WO2011069873A3 (en) * 2009-12-07 2011-09-22 Schaeffler Technologies Gmbh & Co. Kg Wheel hub drive unit
WO2014183896A1 (en) * 2013-05-17 2014-11-20 Robert Bosch Gmbh Power wheel for a vehicle
CN105496668A (en) * 2014-09-26 2016-04-20 广东凯洋医疗科技集团有限公司 Hub fast clutch device for electric wheelchair
CN108128144A (en) * 2017-12-10 2018-06-08 山东理工大学 A kind of In-wheel motor driving wheel equipped with brake apparatus
CN108128144B (en) * 2017-12-10 2020-06-09 山东理工大学 Wheel hub motor driving wheel with brake device
CN111082597A (en) * 2018-10-19 2020-04-28 奥的斯电梯公司 Motor and elevator system
WO2023183399A1 (en) * 2022-03-24 2023-09-28 Rehrig Pacific Company Hub motor with integrated brake

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