• 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 motorized electric cable winding / unwinding device (CE) comprises a fixed shaft (1) for fixing to a vertical frame (BAT), a rotating shaft (2) rotatably mounted on the fixed shaft (1) and coupled mechanically to an electric motor (5), an electric cable winding receiver (3) mounted on the rotating shaft and rotated therewith, the fixed shaft, the rotating shaft and the winding receiver electric cable having a common central axis (Ax) disposed horizontally when the fixed shaft is fixed on the frame, means for driving the receiver in translation along the common central axis in conjunction with the rotation of the receiver, and means for electrical connection (8, 9) arranged so as to ensure the continuity of electrical power connections between an electrical supply cable (CA) and the electrical cable (CE) during a combined movement of rotation and translation of the receiver.
    公开号:FR3084215A1
    申请号:FR1856754
    申请日:2018-07-20
    公开日:2020-01-24
    发明作者:Lionel Moreau
    申请人:PSA Automobiles SA；
    IPC主号:
    专利说明:

    MOTORIZED WINDING / UNWINDING DEVICE
    ELECTRIC CABLE [001] The invention relates generally to the field of winding / unwinding of electric cables. More particularly, the invention relates to a motorized device for winding / unwinding electric cables, in particular for an automatic system of electric recharging by induction of the batteries of electric and hybrid vehicles.
    The recharging of batteries of electric and hybrid vehicles with contactless charging systems is of definite interest. Charging a vehicle electrically at an electric charging station is a tedious task for the user. The user must park in the immediate vicinity of the charging station and connect the vehicle to it using an electrical connection cable. The plugging of male and female electrical sockets and the unwinding / winding of the electrical connection cable must be managed manually by the user.
    [003] Electric charging systems by electromagnetic induction, which allow contactless transfer of electrical energy, are set to develop for charging electric and hybrid vehicles. These systems no longer require plug sockets and, if equipped with a movable primary charging coil, can provide flexibility in the location of the vehicle’s charging station. This flexibility is however limited by the length of the electric cable which connects the mobile primary charging coil to the fixed charging station. The realization of an automatic electric induction charging system with movable primary coil requires the availability of a motorized device capable of efficiently managing the operations of winding / unwinding the electric cable, in particular when this cable is very long for more flexibility. in the vehicle charging station.
    By WO2012059989A1, there is known an electric cable reel comprising a cable reel on which the cable is wound. The cable reel is rotatably mounted on a vertical axis. An electric motor is provided for the rotation of the cable reel. The electric motor delivers a torque which is a function of the speed of rotation of the cable reel and which is applied in the direction of rotation of the cable reel. In this prior art winder, during winding / unwinding operations, the electric cable rubs on the lower flange of the coil which is arranged vertically.
    This friction of the electric cable not only affects the life of the cable by premature wear related to heating and the tearing of materials, but can also lead to a safety risk by a possible alteration of the electrical insulation sheath. The winding of the electric cable is made on several layers and generates a variable curvature which increases the design constraints. Furthermore, the guiding and alignment of the electric cable during winding / unwinding operations are not managed, which induces stresses on a device served by this electric cable reel.
    There is therefore a need for a motorized device for winding / unwinding an electric cable not having the aforementioned drawbacks and which in particular minimizes the friction, curvature and twist stresses of the electric cable.
    According to a first aspect, the invention relates to a motorized device for winding / unwinding an electric cable comprising a fixed shaft for fixing to a vertical frame, a rotating shaft rotatably mounted on the fixed shaft and mechanically coupled to an electric motor, an electric cable winding receiver mounted on the rotating shaft and rotated therewith, the fixed shaft, the rotating shaft and the electric cable winding receiver having a central axis common horizontally arranged when the fixed shaft is fixed on the vertical frame, means for translational driving of the electric cable winding receiver along the common central axis jointly with the rotation of the electric cable winding receiver, and electrical connection means arranged so as to ensure the continuity of electrical power connections between an electrical supply cable and the electric cable during a combined movement of rotation and translation of the electric cable winding receiver.
    According to a particular characteristic, the electrical connection means comprise an electrical rotary collector and at least one set of rail / electrical friction.
    According to another particular characteristic, the device comprises several sets of rail / electric wiper which are regularly arranged in a circle around the common central axis.
    According to yet another particular characteristic, the electric rotary collector comprises a track-holding part and a brush-holding part, the track-holding part being fixed to the fixed shaft and having a plurality of electrical conduction tracks and the brush holder part being fixed to the rotating shaft and having a plurality of electrical conduction brushes in permanent electrical contact with the plurality of electrical conduction tracks.
    According to yet another particular characteristic, the electrical conduction tracks are made of bronze.
    According to yet another particular characteristic, each set of rail / electric wiper comprises an electric conduction rail fixed on the rotating shaft and extending parallel to the common central axis and an electric wiper fixed to the winding receiver. cable and in permanent electrical contact with the electrical conduction rail.
    According to yet another particular characteristic, the electrical conduction rail is made of bronze.
    According to yet another particular characteristic, the electrical connection means are of the single-phase or three-phase type.
    The invention also relates to an automatic electric recharging system by electromagnetic induction having a movable primary coil, comprising a device as indicated above for the winding / unwinding of an electric cable supplying the system.
    Other advantages and characteristics of the present invention will appear more clearly on reading the detailed description below of a particular embodiment of the invention with reference to the accompanying drawings, in which:
    - Fig. 1 is a perspective view showing a particular embodiment of a motorized device according to the invention for winding / unwinding an electric cable;
    - Figs.2A and 2B are views in longitudinal half-section of the motorized device for winding / unwinding the electric cable of Fig. 1, showing the device in “cable wound” and “cable wound” states;
    - Fig.3 is a perspective view of an electric rotary collector included in the motorized winding / unwinding electric cable device of Fig.1;
    - Fig.4 is a plan view of the electric rotary collector of Fig.3;
    - Fig.5 is a plan view showing the installation of sets of rail / electric wiper included in the motorized device for winding / unwinding electric cable of Fig. 1; and
    - Figs.6 and 7 are partial perspective views of one of the rail / electric wiper assemblies included in the motorized electric cable winding / unwinding device of Fig. 1.
    Referring to Figs. 1, 2A, 2B, and 3 to 7, a specific EDM embodiment of a motorized electric cable winding / unwinding device according to the invention is now described. The EDM device is described here in the context of use with a mobile primary coil induction charging system for batteries in electric and hybrid vehicles.
    As clearly visible in FIG. 1, the EDM device according to the invention is designed to be fixed in a horizontal position on a vertical BAT frame. The EDM device notably comprises a fixed shaft 1, a rotating shaft 2, a cable winding receiver 3, and a plurality of cylindrical holding rollers 4. The fixed shaft 1, the rotating shaft 2 and the receiver cable winding 3 are parts included in cylindrical envelopes and having a common central axis Αχ. The common central axis Αχ is horizontal and corresponds to the X axis of an orthogonal spatial coordinate system XYZ shown in Fig. 1.
    The fixed shaft 1 is fixed integrally on the BAT frame, as well as the holding rollers 4. In this particular embodiment, the number of the holding rollers 4 is six.
    The rotating shaft 2 and the cable winding receiver 3 are linked in rotation and form a mobile assembly. This movable assembly is driven in reversible rotation about the axis Αχ by an electric motor 5, a direction of rotation corresponding to the winding of the electric cable CE and the other direction of rotation corresponding to the course of the latter. Typically, the electric motor 5 is a stepping type motor, but not exclusively. The electric motor 5 is mechanically coupled to the rotating shaft 2 by a gear 6.
    The cable winding receiver 3 has an internal bore in which is contained the rotating shaft 2. The cable winding receiver 3 can slide on the rotating shaft 2. On the other hand, the rotation of the receiver d cable winding 3 around the rotating shaft 2 is prohibited by axial guide walls 20 of the rotating shaft 2 which are inserted in corresponding axial grooves present in the internal bore of the cable winding receiver 3.
    The cable winding receiver 3 comprises on its outer periphery a helical gutter 30 which forms a housing for the electric cable CE. The winding of the electric cable CE in the cable winding receiver 3 is carried out on a single winding layer. The helical gutter 30 precisely determines the position occupied by the electric cable CE in the cable winding receiver 3. The six holding rollers 4 are distributed all around the cable winding receiver 3, with an angular offset of 60 °. between rollers, and guarantee that the electric cable CE is kept in position in the gutter 30.
    According to the invention, when it is rotated together with the rotating shaft
    2, the cable winding receiver 3 also performs a translation along the axis X which accompanies the running of the electric cable CE during its winding or unwinding.
    In this embodiment, the winding operation of the electric cable CE in the receiver 3 requires rotation of the movable assembly clockwise and a translation in + X of the receiver 3. The operation of unwinding of the electric cable CE requires a rotation of the movable assembly in a counterclockwise direction and a translation in -X of the receiver 3. In FIG. 1, the EDM device is shown in a state in which the electric cable CE is unwound almost entirely.
    Electrical connection means, which are detailed below with particular reference to Figs.2A, 2B, and 3 to 7, are provided to ensure the continuity of the electrical power connections between an AC power supply cable, from the electrical network, and the CE electrical cable which supplies the mobile primary coil of the induction charging system. These electrical connection means include an electrical rotary collector (not visible in Fig. 1) and several sets of rail / electric friction (pins 8 and 9 in Fig. 1) which guarantee permanent and reliable electrical power connections between the AC and CE cables during the combined movement of rotation and translation of the receiver
    3.
    In this particular embodiment, the EDM device is of the single-phase type and the cables CE and CA comprise three electrical wires, namely, a phase wire, a neutral wire and a ground wire. The above-mentioned electrical connection means are designed and dimensioned to support the voltage of the electrical supply network and the passage of an electrical current of at least 50 A.
    In other embodiments intended for the power supply, the EDM device may be of the three-phase type and the CE and CA cables will then include four electrical wires, namely, three phase wires and a ground wire.
    It will be noted that the combined movement of the receiver 3 makes it possible to obtain a PC cable crossing point which remains fixed whatever the state of winding / unwinding of the electric cable CE. This characteristic allows an easy alignment of the EDM device with the induction charging system with moving primary coil, without constraints of overheating, curvature, twisting of the cable on itself and friction of the cable. In general, it will be noted that the EDM device of the invention allows optimization of the winding / unwinding operations as well for an electric cable of small diameter, flexible and flexible and having a small radius of curvature, as for an electric cable very large in diameter, less flexible and less flexible and having a very large radius of curvature. In addition, the weight of the cable is evenly distributed in the cable winding receiver, which limits the fatigue and wear of the rotating parts.
    In the mobile primary coil induction charging system, the EDM device according to the invention can be controlled so that the electric cable remains taut above the ground during all the phases of movement of the mobile primary coil. The control of the EDM device according to the invention is then carried out in synchronization with the movement of the movable primary coil. Such control of the EDM device according to the invention avoids friction of the electric cable on the ground during the phases of movement of the movable primary coil.
    Figs.2A and 2B show high and low half-sections of the EDM device according to the invention, respectively in a "cable unwound" state and a "cable wound" state.
    As shown in Figs.2A and 2B, the fixed shaft 1 has a helical groove 10 in which are housed cam rollers 31 of the cable winding receiver 3. In this particular embodiment, the rollers cam 31 are three in number and are angularly distributed with an angular offset of 120 ° between rollers.
    The rotary drive of the cable winding receiver 3 by the rotating shaft 2 thus causes the translation of the cable winding receiver 3 along the axis X.
    The fixed shaft 1 supports the mounting in rotation of the mobile assembly. The rotating shaft 2 is fitted into the fixed shaft 1. The rotation of the rotating shaft 2 on the fixed shaft 1 is guided using a first ball bearing 11 and a second ball bearing 70. The first ball bearing 11 is mounted on the fixed shaft 1. The second ball bearing 70 is mounted on a fixed fixing flange 7 and receives an outer end of the rotating shaft 2.
    As shown in Figs.2A and 2B, and with reference also to Figs.3 and 4, the electric rotary collector, referenced 12, comprises a track carrier part 120 and a brush holder part 121. The rotary collector 12 provides the maintenance of the electrical power connections in the EDM device, relative to the rotation of the rotating shaft 2 and of the cable winding receiver 3 around the central axis Αχ.
    The track-carrying part 120 is generally cylindrical in shape and has a central bore allowing it to be fitted onto the fixed shaft 1, along the central axis Αχ. Screws 123 are provided for fixing the track-carrier part 120 on the fixed shaft 1. The track-carrier part 120 here comprises three electrically conductive rings 124 which form electrical conduction tracks. Typically, the rings 124 are overmolded in an electrically insulating material which forms the body of the track-holding piece 120. The three rings 124 are typically made of bronze and are connected respectively to the electrical wires of phase Pca, neutral Nca and earth Tca AC power cable.
    The brush holder piece 121 is rotatably mounted on the body of the tracker piece 120 and is fixed to the rotating shaft 2 by screws (not shown).
    The brush holder part 121 is generally here in the form of a movable washer 125 having two axes 126 which project perpendicularly from one face thereof. The two axes 126 are mechanically integral with the movable washer 125 and support three brush holders 127, with here two brush holders 127 mounted on the same axis 126.
    The brush holders 127 each comprise two electrical contact brushes, typically formed from a graphite-based composite material, and a spring mechanism pushing the brushes against their respective track 124, so as to guarantee adequate electrical contact. . Each of the brush holders 127 is electrically connected to a respective electrical conduction rail 8 by an electrical connection wire 13.
    Referring more particularly to Figs.5 to 7, it is now described the sets of rail / electric wiper. The electrical rail / friction assemblies maintain the electrical power connections in the EDM device, relative to the translation along the X axis of the cable winding receiver 3.
    As shown in Fig.5, the EDM device here comprises three sets of rail / electric friction RFp, RFn and RFt, which are similar and correspond respectively to the electrical wires of phase Pca, neutral Nca and earth Tca of AC power cable. The RFp, RFn and Rps assemblies are regularly arranged in a circle, with an angular offset of 120 degrees between them in this embodiment.
    As clearly visible in Figs. 1 and 2A, 2B, the rails 8 are fixed on the front part of the rotating shaft 2, on the circumferential wall of the latter, and extend in the X axis. Typically, the rails 8 are made of bronze, but not exclusively. The wipers 9 are fixed on the annular face of the cable winding receiver 3 and move with it, maintaining electrical contact with the rails 8.
    Construction details of the RFp electric rail / friction assembly, chosen by way of example for the description, are shown in FIGS. 6 and 7.
    The rail 8 is mounted on the rotating shaft 2 by means of plates 80 and 81 and fixing screws. Typically, in order to have good electrical conductivity, the plates 80 and 81 and the fixing screws are bronze, but not exclusively. The wall of the rotating shaft 2 is clamped between the rail 8 and the plates 80 and 81. The plates 80 and 81 are here arranged opposite two end portions of the rail 8.
    The electrical connection wire 13 is fixed to the wafer 80, by a terminal thereof inserted in a fixing screw. A grommet 14 is provided in the front wall of the rotating shaft 2 for the passage of the electrical connection wire 13. As regards here the assembly of rail / electric friction shoe RFp, the rail 8 is thus electrically connected to the phase wire Pca of the AC cable through the connection wire 13 and the rotary collector 12.
    As shown in Fig.7, the wiper 9 comprises a housing 90 which is fixed by screws 91 to the wall of the cable winding receiver 3. The housing 90 contains two friction blocks 92, typically formed of a composite material based on graphite, and a spring mechanism (not visible) which pushes the friction blocks 92 against the rail 8, for adequate electrical contact with the latter. The wiper 9 is electrically connected to the electric cable CE, more precisely to the phase electric wire Pce of this cable, this being the rail / electric wiper RFp assembly.
    The invention is not limited to the particular embodiment which has been described here by way of example. In general, the invention will find applications in the winding / unwinding of all types of cables or electrical harnesses, such as power supply cables or computer links. Those skilled in the art, depending on the applications of the invention, can make different modifications and variants falling within the protective field of the invention.
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    claims
    1. Motorized device for winding / unwinding an electric cable (CE) comprising a fixed shaft (1) for fixing to a vertical frame (BAT), a rotating shaft (2) rotatably mounted on said fixed shaft (1) and mechanically coupled to an electric motor (5), an electric cable winding receiver (3) mounted on said rotating shaft (2) and driven in rotation therewith, said fixed shaft (1), rotating shaft (2 ) and electric cable winding receiver (3) having a common central axis (Αχ) disposed horizontally when said fixed shaft (1) is fixed on said vertical frame (BAT), means (10, 31) for driving in translation of said electrical cable winding receiver (3) along said common central axis (Αχ) together with the rotation of said electrical cable winding receiver (3), and electrical connection means (RFp, RFn, RFt, 12 ) arranged so as to ensure continuity of connections power electrics between a power supply cable (CA) and said power cable (CE) during a combined movement of rotation and translation of said power cable winding receiver (3).
    [2" id="c-fr-0002]
    2. Device according to claim 1, characterized in that said electrical connection means comprise an electrical rotary collector (12) and at least one set of rail / electrical friction (RFp, RFn, RFt).
    [3" id="c-fr-0003]
    3. Device according to claim 2, characterized in that it comprises several sets of rail / electric wiper (RFp, RFn, RFt) which are regularly arranged in a circle around said common central axis (Αχ).
    [4" id="c-fr-0004]
    4. Device according to claim 2 or 3, characterized in that said rotary electrical collector (12) comprises a track-holding part (120) and a brush-holding part (121), said track-holding part (120) being fixed to said fixed shaft (1) and having a plurality of electrical conduction tracks (124) and said brush holder part (121) being fixed to said rotating shaft (2) and having a plurality of electrical conduction brushes (127) in electrical contact permanent with said plurality of electrical conduction tracks (124).
    [5" id="c-fr-0005]
    5. Device according to claim 4, characterized in that said electrical conduction tracks (124) are made of bronze.
    [6" id="c-fr-0006]
    6. Device according to any one of claims 2 to 5, characterized in that each said set of rail / electric wiper (RFp, RFn, RFt) comprises an electric conduction rail (8) fixed on said rotating shaft (2) and extending parallel to said common central axis (Αχ) and an electric wiper (9) fixed to said
    5 cable winding receiver (3) and in permanent electrical contact with said electrical conduction rail (8).
    [7" id="c-fr-0007]
    7. Device according to claim 6, characterized in that said electrical conduction rail (8) is made of bronze.
    [8" id="c-fr-0008]
    8. Device according to any one of claims 1 to 7, characterized in that said electrical connection means (RFp, RFn, RFt, 12) are of the single-phase or three-phase type.
    [9" id="c-fr-0009]
    9. Automatic electric recharging system by electromagnetic induction having a movable primary coil, characterized in that it comprises a device (EDM) according to any one of claims 1 to 8 for winding / unwinding
    15 of an electric cable (CE) supplying said system.
    类似技术:
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    EP0464451B1|1995-05-17|Adjustable electrical connector, installed between electrical equipment and a wall outlet
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    FR2664436A1|1992-01-10|Electrical connector
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    FR2535122A1|1984-04-27|Twist-prevention device for an electrical cable.
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    同族专利:
    公开号 | 公开日
    FR3084215B1|2021-04-16|
    EP3598595A1|2020-01-22|
    MA46802A|2020-11-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH243432A|1945-01-13|1946-07-15|Borgeaud Francois|Transportable winch.|
    US20030192974A1|2001-03-27|2003-10-16|Hopper Michael B.|Tool support|
    FR2861843A1|2003-10-29|2005-05-06|Romain Granger|CONNECTING DEVICE ASSOCIATED WITH A THREE DIMENSIONAL MEASURING APPARATUS ARM WITH ARTICULATED ARMS|
    CN103224202A|2013-04-24|2013-07-31|宝鸡石油机械有限责任公司|Rotary drum device capable of automatically winding and unwinding cable|
    WO2012059989A1|2010-11-04|2012-05-10|トヨタ自動車株式会社|Cord housing device, and vehicle installed with cord housing device|CN112436406A|2020-10-27|2021-03-02|长沙矿冶研究院有限责任公司|Mobile energy storage vehicle|
    CN113277384B|2021-06-16|2022-02-18|广东皓耘科技有限公司|Cable winding and unwinding speed control method and device and mobile operation equipment|
    法律状态:
    2019-06-20| PLFP| Fee payment|Year of fee payment: 2 |
    2020-01-24| PLSC| Search report ready|Effective date: 20200124 |
    2020-06-23| PLFP| Fee payment|Year of fee payment: 3 |
    2021-06-23| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1856754|2018-07-20|
    FR1856754A|FR3084215B1|2018-07-20|2018-07-20|MOTORIZED ELECTRIC CABLE WINDING / UNWINDING DEVICE|FR1856754A| FR3084215B1|2018-07-20|2018-07-20|MOTORIZED ELECTRIC CABLE WINDING / UNWINDING DEVICE|
    EP19180741.1A| EP3598595A1|2018-07-20|2019-06-18|Motorised device for winding/unwinding electric cable|
    MA046802A| MA46802A|2018-07-20|2019-06-18|MOTORIZED ELECTRIC CABLE WINDING / UNWINDING DEVICE|
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