• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an arrangement (100) in an electric vehicle (1) in which at least one wheel (2) of an electric motor (3) has been arranged on the vehicle (1). The electric motor (3) comprises an outermost rotor (4) and a longer inwardly arranged stator (5). The stator (5) of the electric motor (3) is arranged to act as the axis of the wheel (2) in such a way that the stator (5) is arranged to carry the loads between said wheel (2) and the other structures of the vehicle (1).
    公开号:FI20185218A1
    申请号:FI20185218
    申请日:2018-03-09
    公开日:2019-09-10
    发明作者:Saukkio Teemu
    申请人:Maslog Oy；
    IPC主号:
    专利说明:

    Arrangement in electric vehicle and pump cart
    Background
    The invention relates to an arrangement in an electric vehicle having an electric motor arranged on at least one wheel of the vehicle, the electric motor comprising an externally arranged rotor and an internally arranged stator.
    The invention further relates to a pump cart.
    Electric motor structures are known which are arranged on a wheel so that the rotating rotor of the motor is on the outer circumference and connected directly to rotate the 10 wheels without intermediate transmission.
    The problem with known solutions is their complexity.
    Short description
    The arrangement according to the invention is characterized by what is stated in the characterizing part of the independent claim. Other embodiments of the invention are characterized by what is stated in the other claims.
    Inventive embodiments are also set forth in the specification and drawings of this application. The inventive content in the application may also be defined differently from what is done in the claims below. The inventive content may also consist of several separate inventions, especially if the invention is considered in the light of the expressed or implicit subtasks or in terms of the benefits or groups of benefits achieved. In this case, some of the attributes contained in the claims below may be unnecessary for separate inventive ideas. The features of the various embodiments of the invention can be applied in connection with other embodiments within the scope of the basic inventive idea.
    The idea of the invention is that the stator of an electric motor acts as an axle of a wheel, whereby the stator bears the loads between said wheel and the other structure of the vehicle.
    The advantage is that the structure of the engine and thus of the vehicle is made simple.
    The idea of one embodiment is that the vehicle is equipped with an auxiliary unit with engine control units for sensing, which sensing is arranged to detect the force applied by the operator to the vehicle.
    20185218 PRH 09 -03- 2018 and to produce a sensor signal from it, on the basis of which the control unit controls the operation of the motor.
    The advantage is that the handling of the vehicle can be facilitated.
    Brief description of the figures
    Some embodiments of the invention are explained in more detail in the accompanying drawings, in which Figure 1 schematically shows an arrangement according to the invention in cross-sectional view, Figure 2 schematically shows the arrangement according to Figure 1 from the side, and Figure 3 schematically shows a vehicle.
    In the figures, some embodiments of the invention are shown simplified for clarity. Similar parts are denoted by the same reference numerals in the figures.
    Detailed description
    Fig. 1 schematically shows an arrangement according to the invention in a cross-sectional view, and Fig. 2 from the side.
    The arrangement 100 is adapted to the electric vehicle 1, which is shown in the figures in broken lines and simplified. The vehicle 1 comprises at least 20 single wheels 2 fitted with an electric motor 3. Said electric motor 3 comprises an externally arranged rotor 4 and an internally arranged annular stator 5. The electric motor 3 may be of the brushless or brushed type, alternating current or direct current motor.
    The stator 5 of the electric motor is arranged to act as an axle 25 of the wheel 2 so that the stator 5 is adapted to carry the loads between said wheel 2 and the other structure of the vehicle 1. Thus, arrangement 100 does not require a separate wheel hub. The stator 5 is fixed by fastening means 13 to the rest of the vehicle structure. The fastening means 13 is a fastening means known per se, which makes it possible to remove and reattach the stator and the whole electric motor, such as a bolt. On the other hand, the fastening means 13 may be a weld seam or an adhesive which must be broken to remove the stator 5 and the electric motor.
    The stator 5 may be attached to the rest of the vehicle on one side thereof, as shown in Figure 1, on both sides, or from the direction of the void space 18 formed by the inner circumference of the annular stator 5, or
    20185218 PRH 09 -03- 2018 in various combinations. Furthermore, the stator 5 can be fastened along its entire length of its side or inner circumference, or alternatively only only over its entire length of its side or inner circumference. In other words, the fastening means 13 can be placed around the stator 5 or only for a certain part or sector thereof.
    In one embodiment, the stator 5 is attached to the vehicle body or subframe. In another embodiment, the stator 5 is attached to a wheel support of the vehicle, which may be spring-loaded and / or shock-absorbing with respect to the rest of the vehicle body.
    In the embodiment shown in Figure 1, the stator 5 comprises a winding 6 formed by windings 10, while the rotor 4 comprises magnets 7, preferably permanent magnets.
    In the embodiment shown in Fig. 1, the widths of the stator winding 6 and the rotor magnet 7 in the direction of the wheel rotation axis X are substantially smaller than the width of the wheel.
    In the embodiment shown in Fig. 1, the wheel 2 comprises a rim 8 and a ring 9 fitted to it (shown in broken lines), and the rotor 4 is fastened directly to the rim 8. Fastening methods and means known per se can be used for fastening the rotor to the rim.
    In another embodiment, the rotor 4 and the rim 8 have one or more structural layers. Such a structural layer may be functional, it may, for example, dampen the vibrations between the rotor and the rim, or act as an element assisting in the attachment of the rotor and the rim, and the like.
    It should be noted that the tire may be a tire known per se: air-filled, solid tire, foam-filled, etc. It should also be noted that a separate tire 9 is by no means necessary, but the rim 8 can form a tread on which the wheel 2 rotates on the running surface.
    In the embodiment shown in Fig. 1, the rotor 4 is mounted on the stator 5 by a roller bearing 10, the axes of rotation Y of the bearing rollers 11 of which are arranged differently with respect to the axis of rotation X of the wheel. The advantage is that the bearing is supported both in the direction of the axis of rotation X of the wheel and in a direction perpendicular to it. The angle now mentioned is 45 °, but of course it can be another. It should also be noted that the bearing between the rotor 4 and the stator 5 can also be implemented with a bearing other than a roller bearing. The bearings are dimensioned so that the stator 5 acts as an axle of the wheel 2, which carries everything from the vehicle through the wheel
    20185218 PRH 09 -03- 2018 load transmitted to the chassis. In other words, the bearing between the rotor 4 and the stator 5 acts as the exclusive wheel bearing of the wheel 2.
    In the embodiment shown in Fig. 1, seals 12 are arranged between the rotor 4 and the stator 5 so as to form a sealed space for the electromagnetic parts of the rotor and the stator5.
    Figure 3 schematically shows a vehicle. According to one idea, the vehicle 2 may be a hand-operated vehicle driven by the muscular force of the operator. The vehicle 2 shown in Fig. 3 is a fork-lift truck, i.e. a pump trolley, which is used, for example, in warehouses and distribution transports for moving pallets10 and various goods, and which moves, pulled or pushed by an operator.
    A typical pump cart comprises two juxtaposed lifting arms 14 which engage the pump cart body 15. In addition, the pump cart has a bar 16 having a handle portion 17 at its first end from which the operator moves 15 and controls the pump cart, and uses a pump cart raising and lowering height adjustment arrangement. The other end of the rod 16 is attached to a subframe 19 which is pivotable by the rod 16 relative to the frame 15. Attached to the subframe 19 is a wheel 2 or a pair of wheels comprising an electric motor 3. At the other end of the lifting rods 14 are smaller wheels or rollers.
    The vehicle is, of course, provided with a power supply 21, such as a battery 24, for driving the electric motor 3. The battery 24 may be, for example, a lithium or lead-acid battery.
    The handle part 17 is provided with motor control means 20, through which the motor control unit 21 and further the operation of the electric motor 3 are controlled.
    In one embodiment, the arrangement 100 is provided with an auxiliary unit 22 comprising a sensor 23 connected to the engine control unit 21. The sensor 23 is arranged to detect the force applied by the operator to the vehicle 1 and provide a signal to the control unit 21. In the embodiment shown in Fig. 3.
    The detectable force may be the force exerted by the operator's palm on the handle portion and / or the pressure exerted by the operator on the handle portion.
    An auxiliary mode can be selected from the engine control means 20, whereby the auxiliary unit 22 is switched on. According to one idea, the greater the force applied by the operator 23 detected by the sensing 23, the more the electric motor 3 gives power and rotates the wheel 2.
    20185218 PRH 09 -03- 2018
    According to another idea, the sensor 23 of the auxiliary unit 22 is arranged on the rod 16 or between the rod 16 and the subframe 19 so that a force acting on the rod 16 is detected, and on the basis of this force the operation of the electric motor 3 is controlled.
    According to a third idea, the sensing 23 of the auxiliary unit 22 is adapted to detect the weight of the load applied to the pump cart, and on this basis the operation of the electric motor 3 is controlled, i.e. the more assistance the electric motor 3 provides.
    In one embodiment, the sensing 23 is arranged to detect a change in the speed of the vehicle 10, which can be detected, for example, by a change in the speed of the wheel 2. The assistance unit 22 may increase the assistance provided by the electric motor 3 if the speed of the vehicle decreases in a predetermined manner; and vice versa, when the speed of the vehicle increases in a predetermined manner, to reduce the assistance provided by the electric motor 3.
    According to one idea, the assistance provided by the electric motor 3 is controlled so that the force which the operator has to use to move the vehicle remains at least substantially constant.
    According to one idea, the control of the assistance function can be implemented by a computer program code executed in the processor comprised by the assistance unit 22, which can be loaded from the internal memory of the device. The computer program code can be transferred to the device from a separate external storage medium, or via a telecommunication network, for example by connecting the device to the Internet via a wireless access network.
    It should be noted in this connection that the auxiliary unit 22 described above can also be used in connection with an arrangement other than the electric motor described above. Thus, an electric-assisted pump cart can be provided with a conventional electric motor with the rotor inside and the stator outer, and the auxiliary unit 22 described above can be connected thereto. The electric motor can be adapted to the vehicle in a more practical manner and connected to the wheel by means of Alternatively, the electric motor may have a rotor on the outside and a stator on the inside, but which, contrary to the above, has a separate wheel hub.
    In any case, the structure and operation of the pump cart assistance function may be as described above.
    In some cases, the features set forth in this application may be used as such, notwithstanding other features. On the other hand, the features presented in this application can be combined, if necessary, to form different combinations.
    In summary, the arrangement according to the invention is characterized in that the stator of the electric motor is arranged to act as an axle of the wheel so that the stator is adapted to carry the loads between said wheel and the other structure of the vehicle.
    Furthermore, the pump cart 10 according to the invention is characterized in that the pump cart is provided with an auxiliary unit comprising a motor control unit and a sensor, which sensor is arranged to detect the force applied by the operator to the pump cart and produce a sensor signal thereon, and the control unit to control the motor. .
    The drawings and the related explanation are only intended to illustrate the idea of the invention. It will be clear to a person skilled in the art that the invention is not limited to the embodiments described above, in which the invention is described by means of some examples, but many modifications and various embodiments of the invention are possible within the scope of the inventive idea defined below.
    20185218 PRH 09 -03- 2018
    The reference numbers
    20185218 PRH 09 -03- 2018
    1 vehicle2 wheel 5 3 electric motor4 rotor5 stator6 winding7 magnetic 10 8 a peripheral rim9 ring10 roller bearing11 roller bearing12 sealant 15 13 the fixing means14 nostoaisa15 frame16 shaft17 the handle portion 20 18 empty space19 subframe20 engine controls21 engine control unit22 assistance unit 25 23 sensing24 battery100 arrangement 30 X wheel axisY bearing roller rotation shaft
    权利要求:
    Claims (11)
    [1]
    The claims
    1. An arrangement in an electric vehicle having an electric motor fitted to at least one wheel of the vehicle, the electric motor comprising an externally arranged rotor and
    5 an inwardly arranged stator, characterized in that the stator of the electric motor is arranged to act as an axle of said wheel so that the stator is adapted to carry the loads between said wheel and the other structure of the vehicle.
    10
    [2]
    An arrangement according to claim 1, characterized in that the wheel comprises a rim and a ring fitted thereto, and that the rotor is arranged directly on the rim.
    [3]
    Arrangement according to Claim 1 or 2, characterized in that the rotor is mounted on the stator by a roller bearing, the axes of rotation of the rollers of which are arranged differently from the axis of rotation of the wheel.
    [4]
    Arrangement according to Claim 1, characterized in that the axes of rotation of the roller bearing rollers are arranged at an angle of 45 ° to the axis of rotation of the wheel.
    20 with respect to the back.
    [5]
    Arrangement according to one of the preceding claims, characterized in that seals are arranged between the rotor and the stator so as to form a sealed space for the electromagnetic parts of the rotor and the stator.
    [6]
    Arrangement according to one of the preceding claims, characterized in that the stator comprises a winding and the rotor a magnet.
    [7]
    Arrangement according to Claim 6, characterized in that the widths of the stator winding and the rotor magnet in the direction of the axis of rotation of the wheel are substantially smaller than the width of the wheel.
    [8]
    Arrangement according to one of the preceding claims, characterized in that the vehicle is a vehicle propelled by an operator,
    35 like a pump cart.
    20185218 PRH 09 -03- 2018
    [9]
    An arrangement according to claim 8, characterized in that it is provided with an auxiliary unit comprising an engine control unit and a sensor, which sensor is arranged to detect the force applied by the operator to the vehicle and to produce a sensor signal therefrom, and which control unit
    5 is arranged to control the operation of the motor on the basis of the sensor signal.
    [10]
    An arrangement according to claim 9, characterized in that the sensing is arranged in the handle part for moving the vehicle so that the force to be detected is caused by the operator's palm to the handle part.
    10 power.
    [11]
    A pump cart, characterized in that it comprises an electric motor facilitating movement, and in that the pump cart is provided with an auxiliary unit comprising a motor control unit and a sensor, the sensor being arranged to detect the force applied to the pump cart by the operator and to produce a sensor signal operation based on the sensor signal.
    Pump trolley according to Claim 11, characterized in that the sensing is arranged in the handle part for moving the pump trolley, so that the force to be detected is the force caused by the operator's palm to the handle part.
    Pump trolley according to Claim 11, characterized in that the sensing is arranged on the rod of the pump trolley or between the rod and the subframe so that the sensing is adapted to detect the force acting on the rod, and on the basis of this identification the operation of the electric motor is controlled.
    Pump trolley according to Claim 11, characterized in that the sensing is adapted to detect the weight of the load applied to the pump trolley, and on the basis of this identification the operation of the electric motor is controlled.
    类似技术:
    公开号 | 公开日 | 专利标题
    CN103402786A|2013-11-20|Tire and wheel assembly
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    CN208883425U|2019-05-21|A kind of novel storage small-sized forklift
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    同族专利:
    公开号 | 公开日
    FI128532B|2020-07-15|
    CN112272650A|2021-01-26|
    WO2019170964A1|2019-09-12|
    JP2021516194A|2021-07-01|
    FI12398U1|2019-06-14|
    US20200406948A1|2020-12-31|
    EP3762327A1|2021-01-13|
    引用文献:
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    DE19851155A1|1998-11-06|2000-05-18|Abm Greiffenberger Antriebstec|Drive unit for an electrically powered vehicle|
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    DE102007035268A1|2007-07-27|2009-01-29|Linde Material Handling Gmbh|Warehousing vehicle, in particular low-lift trucks|
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    TWI403426B|2010-08-31|2013-08-01|Chiu Hsiang Lo|Electric car of the overall electric wheel|
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    DE102013103200A1|2013-03-28|2014-10-02|Linde Material Handling Gmbh|pallet trucks|
    TWM468465U|2013-04-16|2013-12-21|jian-jie Wang|Hand pushing type electric carrier|
    ITPR20130101A1|2013-12-18|2015-06-19|Ms Rei Srl|MOTOR-REDUCER SYSTEM FOR TWO AND THREE WHEEL VEHICLES INSTALLABLE COAXIALALLY WITH THE CENTRAL MOVEMENT OF THE VEHICLE AND VEHICLE INCLUDING THE SYSTEM|
    US10023043B2|2015-04-20|2018-07-17|Dane Technologies, Inc.|Adaptable hub motor and related systems and methods|
    US9718661B1|2016-07-06|2017-08-01|Hyster-Yale Group, Inc.|Automated load handling for industrial vehicle|
    法律状态:
    2020-07-15| FG| Patent granted|Ref document number: 128532 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20185218A|FI128532B|2018-03-09|2018-03-09|Arrangement in an electric vehicle|FI20185218A| FI128532B|2018-03-09|2018-03-09|Arrangement in an electric vehicle|
    US16/979,193| US20200406948A1|2018-03-09|2019-03-11|Arrangement in an Electric Vehicle and a Pallet Jack|
    CN201980029245.8A| CN112272650A|2018-03-09|2019-03-11|Device in electric vehicle and pallet truck|
    FIU20194037U| FI12398U1|2018-03-09|2019-03-11|Pallet jack|
    JP2020570648A| JP2021516194A|2018-03-09|2019-03-11|Electric vehicle configuration and pallet jack|
    EP19723835.5A| EP3762327A1|2018-03-09|2019-03-11|Arrangement in an electric vehicle and a pallet jack|
    PCT/FI2019/050202| WO2019170964A1|2018-03-09|2019-03-11|Arrangement in an electric vehicle and a pallet jack|
    FIU20194036U| FI12397U1|2018-03-09|2019-03-11|Electric vehicle being an electric motorcycle, an electric scooter or an electric bicycle|
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