• 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 presents a geared motor consisting of a housing (1) comprising an electric motor formed of a wound stator assembly (6) and a magnetized rotor (4), said housing (1) further comprising a printed circuit ( 8) for connecting and controlling said motor, a gear train, a sensor magnet (10) and a magneto-sensitive sensor (9), the gear train including a motion output gear wheel (RDS), the sensor magnet (10) being of annular shape and being integral with said output wheel (RDS), comprising: - an output wheel (RDS) is extended on either side of the magnet sensor (10) by two guides (11, 12) cooperating with the two opposite walls of the housing (1), - an annular magnet (10) surrounds the axis of rotation of the output wheel (RDS), - a circuit printed (8) comprises the driving means of said motor and extends to the vicinity of the output wheel (RDS), said printed circuit (8) comprises, in the zone situated in the vicinity of the output wheel (RDS), said magneto-sensitive probe (9) mounted directly, electrically and mechanically, on said zone and situated facing, axially or radially, said annular magnet (10) .
    公开号:FR3056841A1
    申请号:FR1659159
    申请日:2016-09-28
    公开日:2018-03-30
    发明作者:Mathieu Watrin；Christophe Adler；Damien Laforge；Gael Andrieux
    申请人:Moving Magnet Technologie SA；
    IPC主号:
    专利说明:

    Field of the invention
    The present invention relates to the field of geared motors, and more particularly geared motors intended for automotive applications, implying great robustness and a design limiting maintenance and bulk.
    Such geared motors usually include an electromagnetic part, with a permanent magnet rotor and a wound stator, controlled by an electronic circuit. A magnetic sensor provides a signal used by the electronic circuit to ensure the enslavement of the electromagnetic part.
    A gear train transmits the movement of the rotor to an output axis.
    State of the art
    Particularly known in the prior art is a geared motor intended for valve control described in European patent application EP1217192. This prior art document describes a motor controlling connection grids by means of a gear system. A magnetic sensor is provided opposite the end of the output axis, which includes a magnet at the end of the axis associated with flux concentrators.
    Disadvantages of the prior art
    This solution is not satisfactory for several reasons.
    -2First, the electromechanical architecture has a large footprint, not allowing a compact realization.
    Secondly, the connection of the various electrical components requires the use of connectors, a source of faults.
    Third, this solution is incompatible with an application requiring a through hollow axis.
    Finally, this embodiment involves extending the output axis to allow the positioning of the magnet, after guiding the axis.
    Solution provided by the invention
    The invention aims to solve these drawbacks by proposing a very compact and robust solution, making it possible to significantly reduce the connections.
    One of the aims of the invention is to minimize the reliability problems resulting from the electrical connection of the various components of a geared motor, and in particular the connection of the coils with the control circuit, the connection of the position sensor with this control circuit and connection with the gearmotor connector. The aim is to reduce the risk of failures and also to simplify assembly, for industrial production in large series.
    Another object is to improve the compactness, by optimizing the positioning of the main components of the geared motor, namely the electromagnetic actuator, the gear train and the electronic circuit and by minimizing the unused spaces.
    Another object is to ensure mechanical strength and optimal guidance of the gear train and especially of the output axis, by perfect precision and mechanical robustness of the drive, even when the gearmotor is subjected to significant forces. .
    -3 An optional goal is to allow a realization with a through output axis.
    In order to be able to produce a compact and integrated assembly which can be used in an industrial context, another of the objects of the invention is to be able to form an assembly integrating a function such as a valve body by forming an integral tubing with the housing of the gear motor.
    To this end, the invention relates, in its most general sense, to a gearmotor consisting of a box comprising an electric motor formed by a wound stator assembly and a magnetic rotor, said box further comprising a printed circuit for connection and the motor control, a motion reduction gear train, a sensor magnet and a magneto-sensitive probe, the gear train comprising a motion output gear wheel, the sensor magnet being of annular shape and being integral with said output wheel, characterized in that
    said output wheel is extended on either side of the sensor magnet by two guides cooperating with the two opposite walls of the housing,
    - said annular magnet surrounds the axis of rotation of the output wheel, said printed circuit comprises the means for controlling said motor and extends to the vicinity of the output wheel, said printed circuit comprises, in the zone located at in the vicinity of the output wheel, said magnetosensitive probe mounted directly electrically and mechanically, on said zone and located opposite, axially or radially, said annular magnet.
    Preferably, the direction of magnetization of said sensor magnet has at least one angularly variable component.
    Also preferably, the rotor is extended by a pinion and said pinion and the output toothed wheel carrying said annular magnet are located on either side of said printed circuit.
    In a particular embodiment, the magneto-sensitive probe is mounted on the printed circuit on the surface opposite to that carrying the majority of the other electronic components.
    In an alternative embodiment, the gear train comprises intermediate gear wheels located on one side of the printed circuit and the output gear wheel is located on the opposite side of said printed circuit.
    Alternatively, the rotor is extended by a pinion, on one side of said printed circuit, said gear train having a series of intermediate toothed wheels driving the output toothed wheel placed on the opposite side of said printed circuit.
    The gearmotor can have a common axis with two intermediate toothed wheels and said printed circuit can be crossed by the axis of the output toothed wheel or crossed by the axis of the rotor of the actuator.
    Advantageously, said permanent magnet has an angularly variable direction of magnetization and a tubular shape, the magneto-sensitive probe being placed in a radial position relative to said magnet.
    The invention makes it possible to produce an axis of the hollow output gear wheel passing through said housing.
    Advantageously, said housing comprises means for guiding each of the ends of the axis of the output toothed wheel, on either side of the printed circuit.
    Preferably, the output gear is coaxial with the rotor.
    So as to form an integrated assembly, said housing can integrate a tubing obstructed by a movable shutter secured and controlled by the toothed output wheel. The housings
    - 5 of the housing then directly integrate this tubing (obtained by molding a plastic or metallic material for example).
    The invention may advantageously be applied to an air conditioning valve comprising a rotary shutter actuated by the axis of the gearwheel output of the gearmotor, or else to an air shutter comprising at least one movable shutter actuated by the axis of the geared motor output gear, or to a throttle body for air intake for motor vehicles comprising at least one movable flap actuated by the axis of the geared motor output gear, or even a relief valve for turbocharger comprising at least one movable lever actuated by the axis of the geared motor output gear. The control of water valves, thermostat type, is particularly addressed by this invention.
    Brief description of the figures
    The present invention will be better understood on reading the detailed description of a nonlimiting example of the invention which follows, referring to the accompanying drawings in which:
    FIGS. 1a, 1b, 1c and 1d show a first embodiment of a geared motor according to the invention according to views, respectively, exploded in front perspective view, exploded in rear perspective view, from above, without upper casing , of longitudinal section,
    FIGS. 2a, 2b and 2c represent a second embodiment of a geared motor according to the invention according to views, respectively, exploded in rear perspective view, from above without upper casing, of longitudinal section,
    FIGS. 3a and 3b show a third embodiment of a geared motor according to the invention according to views, respectively, from above without upper casing, of longitudinal section.
    - Figures 4a and 4b show a fourth embodiment of a geared motor according to the invention incorporating a butterfly valve body for air intake
    -6automobile, according to views, respectively, in front perspective and in longitudinal section.
    Detailed description of a nonlimiting example of the invention
    Figures la to ld represent a first typical example of the invention. The gearmotor is composed of a box (1) formed by the assembly of an upper (2) and lower (3) casing in which there is a motor made up of a wound stator assembly (6) which cooperates magnetically with a rotor (4) composed of one or more pairs of magnetic poles. This rotor (4) is guided in rotation by an input axis (al) and is extended by a pinion (5) which meshes with a train of gears forming a mechanical movement reducer reducing the mechanical stroke and multiplying the force out of this train. The position of the gear output wheel (RDS) of this gear train is known by means of a magnetic sensor composed of a magneto-sensitive probe (9) and a magnet (10).
    A single printed circuit (8) allows the supply and the control of the motor as well as the knowledge of the exit position via the magneto-sensitive probe (9) placed on this same circuit. The wound stator assembly (6) is supplied by means of connection tabs (7) arranged perpendicularly to the plane of the circuit (8) and which are mechanically and electrically connected to it. In another embodiment (not shown), it is possible to directly connect the wires of the coils to the circuit. The power supply and the communication with the external environment are carried out by means of a connector (14), the connection lugs (15) of which pass through the casing (3) to receive the counter-connector of the user from the external side. and on the inner side be electrically and mechanically connected to the printed circuit.
    FIG. 1c shows the arrangement of the gear train here composed of four reduction stages, the number of stages not being limiting. These stages are formed by pinion / toothed wheel assemblies carried by the guide axes a 1, a 2, a 3 and a 4. The toothed output wheel (RDS) is guided by two guide pins (11) and (12), these elements (RDS, 11, 12) forming here a single piece, but it can be envisaged to bring the axes of guides on the toothed output wheel (not shown).
    The axis a2 carries the mobile Ml formed by a toothed wheel Rl which meshes with the toothed input pinion (5) forming the first reduction stage.
    The axis a3 carries the mobile M2 formed by a toothed pinion P2 and a toothed wheel R2 which meshes with the toothed pinion Pl forming the second reduction stage. The mobiles Ml and M2 are arranged head to tail, the pinions Pl and P2 extending axially in an opposite direction so as to limit the height of the gearmotor, the wheel R2 not being higher than the pinion Pl.
    The axis a4 carries the mobile M3 formed by a toothed pinion P3 and a toothed wheel R3 which meshes with the toothed pinion P2 forming the third reduction stage.
    Finally, the output gear wheel (RDS) meshes with the toothed pinion P3 forming the fourth reduction stage.
    It should be noted that these different linkage stages may as well be in a unitary as not a unitary reduction ratio.
    The mobiles Ml and M2 are arranged on the side opposite the circuit (8) relative to the stator assembly (6), the pinion (5) and its axis al passing through the circuit, as is the axis a2. Then the mobile M3 and the output wheel (RDS) descend to the level of the stator assembly (6) in order to provide a compact gearmotor in the direction of the output axis. The arrangement of the different gears is however not
    - 8 limiting to this embodiment, for example the gears can be arranged partially or completely under the stator assembly and the guide pins comprise several wheel / pinion mobiles (not shown).
    FIG. 1d makes it possible to better visualize the guidance of the output wheel (RDS) and the construction of the position sensor.
    A coupling (13) makes it possible to connect any external member to be moved (not shown). The RDS being hollow and flush with the housing, the coupling (13) takes place inside the RDS in order to be easily connected and to make the actuator more compact. However, this type of connection is not limiting, the connection can for example be easily made through, or be made outside the case if the axes (12) and / or (11) are extended.
    The RDS is guided on either side of the printed circuit (8) by means of the shapes (11) and (12) which slide in the lower (3) and upper (2) casing forming the geared motor housing. The quality of the guide as well as its resistance to the forces created by the gears or the external member is thus improved and its simplicity limits the cost of production. However, this type of guidance is not limiting and the use of intermediate guidance elements using, for example, bearings or plain bearings is possible (not shown). A seal (16) placed around the form (12) and the lower casing (3) can seal the gearmotor with the external environment.
    The use of a sensor using a tip magnet is no longer possible without adding costly complications such as the use of a second printed circuit.
    An annular sensor magnet (10) is here arranged around the axis of the output gear wheel (RDS) and integral with the latter. In order to limit the size, the magnet
    -9sensor (10) is advantageously integrated in the output gear wheel (RDS) but its positioning is not limited to this example, it can for example take place around the guide pins (11) and (12) (not shown) ). Similarly, the sensor magnet (10) may be in the form of an angular sector extending over an angle less than 360 °.
    The magneto-sensitive probe (9) is placed on the printed circuit (8), here axially opposite the sensor magnet (10) in order to sense a variation in the magnetic angle or the amplitude of the magnetic field generated by the sensor magnet (10). The position of the probe (9) on the printed circuit (8), relative to the sensor magnet (10), is not limiting and may vary depending on the type of magnetization, magnet and probe. For example, the probe can be located radially opposite the magnet or offset axially and radially (not shown).
    The magnet (10) can be fixed in different ways to the output wheel (RDS) or to the output axes. In a non-exhaustive way, it can be fixed by gluing, riveting, interference, screwing or overmolding. Depending on the type of magnet it can still be directly injected. The magnetization can be carried out before or after assembly with the RDS, or during injection.
    Figure 2a shows a second embodiment of the invention. Found at the input of the gearmotor is an electric motor consisting of a stator assembly (6) which is coiled magnetically with a rotor (4) composed of one or more pairs of magnetized poles. This rotor (4) is carried by an input axis (al) and is extended by an input pinion (5) which meshes with a gear train forming a mechanical movement reducer, reducing the mechanical stroke and multiplying the effort exiting this train.
    - 10 Unlike the first example, the gear train begins to extend under the stator assembly (6) and the printed circuit (8). FIG. 2b makes it possible to better distinguish the input pinion (5) carried by the axis (al) and the mobiles (Ml), (M2) and (M3) composed of pinion / toothed wheel couple forming the first three stages of reduction and carried respectively by axes (a2), (a3) and (a4).
    Another feature of this gearmotor is to have five reduction stages without using an additional guide axis compared to the first example comprising four reduction stages. Figure 2c shows a sectional view to clearly visualize this embodiment. To do this, the axis (a3) carries two superimposed mobiles (M2) and (M4). The toothed pinion of the mobile (M3) meshes with the toothed wheel (R4) of the mobile (M4) to form the fourth reduction stage. This solution is economically advantageous and allows good compactness.
    Finally the output gear wheel (RDS) meshes with the toothed pinion P4 forming the fifth reduction stage. This last stage takes place above the printed circuit (8). Unlike the first embodiment, the coupling (13) is therefore located on the same side as the printed circuit (8).
    The guiding of the (RDS) is carried out on either side of the printed circuit (8) by means of the guides (11) and (12) which slide in the lower (3) and upper (2) casing forming the case of the gear motor.
    The magneto-sensitive probe (9) is placed on the printed circuit (8), here axially opposite the sensor magnet (10) in order to sense a variation in the magnetic angle or the amplitude of the magnetic field generated by the sensor magnet (10).
    Figure 3a shows a third embodiment of the invention. The gearmotor is made up of six reduction stages.
    - It The first three stages are produced in a similar manner to the first embodiment by means of the toothed pinion (5) carried by the axis (al) and the mobiles (Ml) and (M2) carried by the axes (a2 ) and (a3).
    In the same way as in the second embodiment, stages four and five are produced by means of two additional mobiles (M4) and (M5) (not shown) located respectively under the mobile (M2) and (M3) and guided by the axes (a3) and (a4).
    Finally the output gear wheel (RDS) meshes with the toothed pinion of the mobile (M5) forming the sixth reduction stage.
    Thus this geared motor offers a reduced footprint and a small thickness.
    Figure 3b shows a sectional view of the actuator to better visualize the guidance of the RDS and the realization of the position sensor.
    One of the peculiarities of the embodiment is to propose a coupling and hollow cavity (13) so that the external member to be moved can be mounted either on one side or the other of the geared motor. This also makes it impossible to use a tip type sensor.
    The guidance of the (RDS) is carried out on either side of the printed circuit (8) by means of the guides (11) and (12) which slide in the lower (3) and upper (2) casing forming the housing of the gear motor.
    The implantation of the (RDS) and its reduced dimensions do not allow, as for the first two embodiments, the implantation of a sensor magnet (10) within the toothed (RDS), located axially opposite the probe. magnetosensitive (9). Thus the annular magnet (10) takes place here above the toothed (RDS), in the extension of the shape (11). The magneto-sensitive probe (9) mounted on the printed circuit (8) is here positioned radially opposite the sensor magnet (10) in order to pick up a variation of the angle
    - 12magnetic or the amplitude of the magnetic field generated by the sensor magnet (10).
    Figure 4a shows a fourth embodiment of the invention derived from the first embodiment. The gearmotor here directly incorporates a more advanced function, here a valve body (for a "butterfly" type flap) for automobile air intake.
    The housing (1) is always composed of an upper (2) and lower (3) casing but the lower casing (3) integrates a tube (17), here to form a valve body called "butterfly". The gearmotor allows the management of the air intake by actuating the movable flap (18).
    Figure 4b shows a sectional view of the actuator for detailing the construction of the outlet.
    The toothed exit wheel (RDS), which always advantageously incorporates the sensor magnet (10), is here mounted on an exit axis (19). The method of assembling the toothed output wheel (RDS) on the output axis (19) is not limiting, it can for example be driven, glued, crimped or even molded.
    The output axis (19) is guided and slides in the shapes (11) and (12).
    The guide of the outlet axis (19) is carried out on either side of the printed circuit (8) by means of the shapes (11) and (12) which slide in the lower casing (3) forming the tubing (17 ) of the valve body and the upper casing (2). However, this type of guide is not limiting and the use of intermediate guide elements using for example bearings or plain bearings is possible (not shown). A seal (16) placed around the toothed output wheel (RDS) or the output axis (not shown) and the lower casing (3) can seal the part of the gearmotor with the tubing (17) valve body.
    A movable flap (18) is mounted on the outlet shaft (19).
    权利要求:
    Claims (18)
    [1" id="c-fr-0001]
    Claims
    1 - Geared motor consisting of a housing (1) comprising an electric motor formed by a stator assembly (6) wound and a magnetic rotor (4), said housing (1) further comprising a printed circuit (8) for the connection and control of said motor, a motion reduction gear train, a sensor magnet (10) and a magnetosensitive probe (9), the gear train comprising a motion output gear wheel (RDS), l sensor magnet (10) being annular in shape and being integral with said output wheel (RDS), characterized in that
    - said output wheel (RDS) is extended on either side of the sensor magnet (10) by two guides (11,
    12) cooperating with the two opposite walls of the housing (1), said annular magnet (10) surrounds the axis of rotation of the output wheel (RDS),
    said printed circuit (8) comprises the means for controlling said motor and extends to the vicinity of the output wheel (RDS),
    - said printed circuit (8) comprises, in the zone located in the vicinity of the output wheel (RDS), said magneto-sensitive probe (9) mounted directly, electrically and mechanically, on said zone and located opposite, axially or radially , of said annular magnet (10).
    [2" id="c-fr-0002]
    2 - Geared motor according to claim 1 characterized in that in the direction of magnetization of said sensor magnet (10) has at least one angularly variable component.
    [3" id="c-fr-0003]
    3 - Geared motor according to claim 1 or 2 characterized in that said rotor (
    [4" id="c-fr-0004]
    4) is extended by a pinion (5) and in that said pinion (5) and the output toothed wheel (RDS) carrying said annular magnet (10) are located on either side of said printed circuit (8).
    - 144 - Gearmotor according to claim 3 characterized in that said magneto-sensitive probe (9) is mounted on the printed circuit (8) on the surface opposite to that carrying the majority of the other electronic components necessary for controlling said electric motor.
    [5" id="c-fr-0005]
    5 - Geared motor according to claim 1 characterized in that the gear train comprises intermediate toothed wheels (Ml, M2, M3) located on one side of the printed circuit (8) and in that the output toothed wheel (RDS ) is located on the opposite side of said printed circuit (8).
    [6" id="c-fr-0006]
    6 - Geared motor according to claim 1 characterized in that the rotor (4) is extended by a pinion (5), on one side of said printed circuit (8), said gear train having a series of intermediate toothed wheels (Ml , M2, M3) driving the output gear wheel (RDS) placed on the opposite side of said printed circuit (8).
    [7" id="c-fr-0007]
    7 - Geared motor according to claim 6 characterized in that it comprises an axis (a3) common to two intermediate toothed wheels (M2, M4).
    [8" id="c-fr-0008]
    8 - Geared motor according to claim 6 characterized in that said printed circuit (8) is crossed by the axis of the output gear wheel (RDS).
    [9" id="c-fr-0009]
    9 - Geared motor according to claim 1 characterized in that said printed circuit (8) is crossed by the axis (al) of the rotor (4).
    [10" id="c-fr-0010]
    10 - Geared motor according to claim 1 characterized in that said permanent sensor magnet (10) has an angularly variable direction of magnetization and
    - A tubular shape, the magneto-sensitive probe (9) being placed in a radial position relative to said sensor magnet (10).
    [11" id="c-fr-0011]
    11 - Geared motor according to any one of the preceding claims, characterized in that the axis of the output toothed wheel (RDS) is hollow and passes through said housing (1).
    [12" id="c-fr-0012]
    12 - Geared motor according to any one of the preceding claims, characterized in that the said housing (1) comprises guide means (11, 12) of each of the ends of the axis of the output gear wheel (RDS), on the one hand and on the other side of the printed circuit (8).
    [13" id="c-fr-0013]
    13 - Geared motor according to claim 1 characterized in that the output gear wheel (RDS) is coaxial with the rotor (4).
    [14" id="c-fr-0014]
    14 - Geared motor according to any one of the preceding claims, characterized in that the said housing (1) integrates a tube (17) obstructed by a movable shutter (18) secured and controlled by the toothed output wheel (RDS).
    [15" id="c-fr-0015]
    15 - Air conditioning valve characterized in that it comprises a rotary shutter actuated by the axis of the output gear wheel (RDS) of a geared motor according to any one of claims 1 to 14.
    [16" id="c-fr-0016]
    16 - Air shutter comprising at least one movable flap characterized in that said movable flap is actuated by the axis of the output toothed wheel (RDS) of a geared motor according to any one of claims 1 to 14.
    [17" id="c-fr-0017]
    17 - Throttle body for air intake for cars comprising at least one movable flap characterized in that said movable flap is actuated by the axis of the toothed wheel
    - 16de output (RDS) of a gearmotor according to any one of claims 1 to 14.
    [18" id="c-fr-0018]
    18 - Discharge valve for turbocharger
    5 comprising at least one movable lever characterized in that said movable lever is actuated by the axis of the output toothed wheel (RDS) of a geared motor according to any one of claims 1 to 14.
    1/6
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    US20190229587A1|2019-07-25|
    WO2018060630A1|2018-04-05|
    EP3520204A1|2019-08-07|
    FR3056841B1|2018-08-31|
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    US11011958B2|2016-10-27|2021-05-18|Harco Semco, Llc|Extreme environment variable reluctance energy harvester and method for implementing same|FR3056841B1|2016-09-28|2018-08-31|Moving Magnet Technologies|MOTOREDUCER HAVING A POSITION SENSOR SURROUNDING THE OUTPUT WHEEL|
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    法律状态:
    2017-08-21| PLFP| Fee payment|Year of fee payment: 2 |
    2018-03-30| PLSC| Publication of the preliminary search report|Effective date: 20180330 |
    2018-08-22| PLFP| Fee payment|Year of fee payment: 3 |
    2019-08-20| PLFP| Fee payment|Year of fee payment: 4 |
    2020-08-19| PLFP| Fee payment|Year of fee payment: 5 |
    2021-08-19| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1659159A|FR3056841B1|2016-09-28|2016-09-28|MOTOREDUCER HAVING A POSITION SENSOR SURROUNDING THE OUTPUT WHEEL|
    FR1659159|2016-09-28|FR1659159A| FR3056841B1|2016-09-28|2016-09-28|MOTOREDUCER HAVING A POSITION SENSOR SURROUNDING THE OUTPUT WHEEL|
    JP2019516446A| JP2019530415A|2016-09-28|2017-09-28|Geared motor unit with position sensor surrounding output gear|
    KR1020197011520A| KR20190053931A|2016-09-28|2017-09-28|A geared motor unit having a position sensor enclosing an output gear|
    US16/337,192| US10756602B2|2016-09-28|2017-09-28|Geared motor unit having a position sensor surrounding the output gear|
    CN201780059721.1A| CN109891724B|2016-09-28|2017-09-28|Geared motor unit with position sensor surrounding output gear|
    PCT/FR2017/052639| WO2018060630A1|2016-09-28|2017-09-28|Geared motor unit having a position sensor surrounding the output gear|
    EP17787494.8A| EP3520204A1|2016-09-28|2017-09-28|Geared motor unit having a position sensor surrounding the output gear|
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