• 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 a motorized air circulation valve comprising a geared motor (1), a valve body (2), a rotary shaft provided with a shutter, said rotary shaft being rotated by said geared motor (1), said geared motor (1) comprising a reduction gear train, a brushless electric motor formed of a rotor having N pairs of magnetized poles connected to a pinion of said reduction gear train, said pinion driving an output wheel secured to said axis rotary. The electric motor comprises a stator part having at least two coils, said stator part having 2 angular sectors alpha1 and alpha2, of respective radii R1 and R2, with R1 greater than R2, the center of the radii and the angular sectors being defined relatively to the center of rotation of the rotor, the angular sector alpha1 being defined by the angular difference between the axes of the first and last coils considered in a circumferential direction of the motor, in that the angular sector alpha1 is less than 180 ° and comprises said coils, the alpha2 sector being devoid of fully inscribed coil, in that one end of the geared motor (1) defines a sidewall of the geared motor (1) and in that the angular sector alpha2 of the stator part is positioned opposite the sidewall.
    公开号:FR3059070A1
    申请号:FR1661430
    申请日:2016-11-24
    公开日:2018-05-25
    发明作者:Samuel EQUOY；Gael Andrieux
    申请人:Moving Magnet Technologie SA；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION The invention relates to a device intended to regulate the air circulation in a motor vehicle. More particularly, the invention refers to a valve associated with, and controlled by, a compact gearmotor.
    STATE OF THE PRIOR ART It is known from the state of the art of the embodiments of valves formed by a valve body and by a geared motor, as for example in the American patent application US20030178004. The motor is direct current, large and positioned next to the valve body. The reduction gear is placed above the valve body. The assembly produced is relatively bulky but makes it possible to use a reducing gear train formed in a single stage by the large lever arms enabled by this bulky embodiment.
    Furthermore, American patent US7591245 presents a more compact motorized valve whose gear motor is located above the valve body and also using only one reduction stage. However, due to the shorter lever arm imposed by the more compact width, the brushless motor used for the geared motor is relatively bulky to provide a generous torque, and forms a protrusion above the valve body which makes the not very compact in height, above the valve body.
    The documents EP1134383, JP3948230, JP4198616, JP4979490,
    W02000063542 and JP2002188464 are further examples of the realization of motorized valves which allow improved dimensions, still compared to the patent application US20030178004, but which do not have an optimized height dimensions with a reducer with a single reduction stage.
    DESCRIPTION OF THE INVENTION The object of the invention is to propose an improvement to the embodiments of the prior art by proposing a particularly compact motorized valve, benefiting from a brushless motor of reduced size compared to the state. art while keeping a single reduction stage. The invention is not however limited to the use of a single reduction stage.
    More particularly the invention relates to a motorized air circulation valve comprising a geared motor, a valve body, a rotary axis provided with a shutter, said rotary axis being rotated by said geared motor, said geared motor comprising a reduction gear train, a brushless electric motor formed by a rotor having N pairs of magnetic poles linked to a pinion of said reduction gear train, said pinion driving an output wheel integral with said rotary axis characterized in that the motor electric comprises a stator part having at least two coils, said stator part having 2 angular sectors alphal and alpha2, of respective radii R1 and R2, with R1 greater than R2, the center of the radii and the angular sectors being defined relative to the center of rotation of the rotor, the alphal angular sector being defined by the angular difference between the axes of the first and last coils considered according to u n circumferential direction of the motor, in that the alphal angular sector is less than 180 ° and comprises said coils, the alpha2 sector being devoid of a fully registered coil, in that one end of the geared motor defines a side of the geared motor and in that the angular sector alpha2 of the stator part is positioned opposite the flank.
    The invention is particularly interesting when said pinion directly meshes with the output wheel, said gearmotor having a single reduction stage.
    Not imitatively but preferably, said stator part has a stator comprising wide teeth and narrow teeth respectively extending radially from an annular ring, the wide teeth having a width greater than or equal to twice the width of the teeth narrow.
    In a preferred embodiment, the pinion is of helical shape.
    Advantageously, the geared motor is located above the shutter, the valve body defining a conduit axis and the largest dimension of said geared motor is oriented substantially parallel to the conduit axis.
    Alternatively, the gearmotor is located above the shutter, the valve body defining a conduit axis and the largest dimension of said geared motor is oriented substantially perpendicular to the axis of conduit.
    To provide a position detection function, the gearmotor preferably comprises a printed circuit on which the motor is electrically connected, a magnetosensitive probe is placed on said printed circuit, said rotary axis being integral with a sensor magnet positioned at end of axis and opposite said magnetosensitive probe.
    Alternatively, said rotary axis is integral with a sensor magnet in the form of an angular sector rotating at the periphery of the axis and positioned opposite said magnetosensitive probe.
    In a particular embodiment, the sensor magnet is positioned radially with respect to the axis, opposite the electric motor.
    In a particular embodiment, said gearmotor is formed by an extension of the valve body on the one hand and of a cover on the other hand.
    BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will emerge on reading the following of detailed embodiments, with reference to the appended figures which represent respectively:
    - Figure 1, a perspective view of two motorized valves according to the invention;
    - Figure 2, a top view, without cover of the gear motor, of a motorized valve according to the invention;
    - Figure 3, a cross-sectional view of a motorized valve according to the invention according to a first embodiment of the gear train;
    - Figure 4, a cross-sectional view of a motorized valve according to the invention according to a second embodiment of the gear train;
    - Figures 5a and 5b, side views of the two motorized valves of Figure 1;
    - Figures 6a and 6b, top views of the two motorized valves of Figures 1.5a and 5b;
    - Figures 7 and 9, cross-sectional views, respectively lateral and exploded perspective, of a particular embodiment of a valve according to the invention;
    - Figure 8, a cross-sectional view of a valve according to the invention according to another particular mode.
    DETAILED DESCRIPTION OF AN EMBODIMENT [0017] FIG. 1 represents two motorized valves according to the invention. It allows to visualize the compactness of the gearmotor (1) located above the valve body (2) and the great flexibility of construction made possible by the invention. In fact, in this FIG. 1, we particularly appreciate the possible orientation given to the geared motor (1) due to its compactness in height (thickness) and its location entirely above the valve body (2). The gearmotor (1) can be oriented along its greatest length along the axis of the valve body (2), on the left in FIG. 1, or perpendicularly with respect to this axis of the valve body (2), on the right on Figure 1, or in any angular orientation around the valve body axis (2). The valve body axis, or conduit axis (13), is shown in Figures 6a and 6b for better understanding.
    Figure 2 illustrates the integration according to the present invention of a gear motor (1) composed of a brushless electric motor (6) and a gear stage, seen from above without cover.
    These elements are part of an imprint defined by the valve body (2), the electric motor (6) being placed as close as possible to the sidewall (12) of the valve body (2), the sidewall (12) delimiting one end of the gearmotor (1).
    Figure 2 illustrates the particular use of the electric motor (6), which is similar to the motor described in patent application W02009034270 but used here unexpectedly. Indeed, the motor (6) is positioned relative to the reducing gear train so that the coils (11) of the stator part (10) are installed above the output wheel (9). This unique configuration makes it possible to maximize the reduction ratio by reducing the distance between the axis of rotation of the rotor (7) and the side (12) of the gearmotor (1) and therefore by maximizing the distance between the pinion (8), visible in Figures 3 and 4, integral with the rotor (7), and the output wheel (9), thus favoring the use of a single reduction stage while allowing a multiplication of torque suitable for closing the body of valve (2).
    The configuration of the engine (6) is such that it comprises two main areas delimited by the angular sectors a1 (alphal) and a2 (alpha2). The angular sector a1 is that comprising the electric coils (11) of the motor (6), the sector being delimited by the winding axis of the first and last coils (11), counted circumferentially around the axis of rotation of the rotor (7). This zone delimited by the angular sector a1 has a radius R1, which is the largest radius of the engine (6).
    It should be noted that the number of coils is not limited to the example of the patent which considers a three-phase motor with three coils. It may for example be envisaged to use, according to the invention, a two-phase motor having two coils.
    The area delimited by the angular sector a2 generally has a radius R2 smaller than the radius R1. The distance between R2 and the axis of rotation of the rotor (7) is thus minimized, mainly defined by the internal radius of the rotor magnet (6), the mechanical play between rotor (7) and stator part (10) and thickness of the teeth, or poles (19) not wound of the stator part (10) and the bottom of the latter. By being positioned as close as possible to the sidewall (12), the area delimited by the angular sector a2 thus makes it possible to minimize the distance between the axis of rotation of the rotor (7) and this sidewall (12). This leads to maximization of the distance between the axis of rotation of the rotor (7) and the axis of rotation (3) of the shutter (4) of the valve body (2). The stator part (10) may have teeth (19) of varied width according to the torque requirements without and with current requested by the application, but preferably it has wide teeth and narrow teeth respectively extending radially from a crown annular, the wide teeth having a width greater than or equal to twice the width of the narrow teeth.
    It is illustrated in Figures 3 and 4, a geared motor (1) composed of a reduction stage with helical teeth - the pinion (8) - whose value of the helix angle to the pitch circle can change. In FIG. 3, the helical teeth have a helical angle at the pitch circle of 40 ° and in FIG. 4 the helical teeth have a helix angle at the pitch circle of 25 °. The use of helical teeth allows the use of a pinion (8) with a reduced number of teeth, thereby increasing the drive ratio. In order to minimize the axial forces generated, it is relevant to reduce the helix angle to the pitch circle.
    The external part of the geared motor (1) is formed on the one hand by the extension of the valve body (2) and on the other hand by a cover (5), these two parts forming a hermetic housing. It should be noted that it is possible to envisage a housing formed from two separate parts decoupled from the valve body (2). Thus, the gearmotor can be fully assembled and then attached to the valve body (2).
    Is shown in the sectional view of Figure 3 a rotational guide formed by two bearings (17) type ball bearings distributed on either side of the axis of the rotor (7).
    It is also possible to use other forms of bearing such as a plain bearing (17) with a guide pin (18) planted in the cover (5) guiding the rotor (7) as shown in the figure 4.
    Alternatively, as shown in Figure 8, the geared motor (1) may have a cover (5) which includes the bearings (17) in order to benefit from an autonomous geared motor assembly (1) positioned on the body valve (2). The bearings (17) are for example molded in the cover (5).
    In another alternative, as shown in Figures 7 and 9, an intermediate plate (21), positioned between the gearmotor (1) and the valve body (2), is used to support in particular the lower bearing (17b ), shown in Figure 9 pre-positioned on the axis (3) of the gearmotor (1).
    In Figure 4 is illustrated the stator part (10) integrated in the cover (5) and the printed circuit (14) attached to the electric motor (6) thus allowing the electrical supply of said electric motor (6) through electrical connection (for example by welding or press-fit connection).
    The printed circuit (14) supports an electronic control circuit which allows the electric motor (6) to be controlled and the position of the air circulation valve to be controlled by means of feedback on the position of the shutter (4).
    This position information is illustrated in Figures 3 and 4 by a magnetosensitive probe (15a) reading the magnetic field emitted by a tip sensor magnet (16a). This is a version called "end-of-axis sensor".
    A second version of magnetic field reading acting as an encoder is shown in Figures 3 and 4 through the combination of a magnetosensitive probe (15b) and a sensor magnet in the form of a sector (16b). this is a so-called "off-axis sensor" version.
    The joint use of the two types of detection described is not imperative and a single sensor can be used.
    This detection principle is not limiting, other types of sensor can be envisaged as sensors having a magnetic field reading by magnetoresistance or having a variation in inductance (inductive sensor) or even type sensors potentiometric.
    For example, in Figures 7 and 9 is shown an inductive type sensor using a network of coils (20).
    Figures 5a and 6a illustrate the geared motor (1) in alignment with the axis of the conduit (13), that is to say having the vector normal to the side (12) parallel to the axis of the conduit (13).
    Figures 5b and 6b illustrate the gearmotor (1) oriented perpendicular to the illustration of Figures 5a and 6a, the vector normal to the side (12) perpendicular to the axis of conduit (13).
    Figures 5a, 5b, 6a and 6b illustrate the possibility of angularly orienting the gearmotor system around the rotary axis (3). This mobility makes it possible, depending on the case, to orient the gearmotor (1) as best as possible in order to maximize the space available for external elements such as connection cables, air ducts, radiators, etc., with which the actuator must cohabit.
    Since the orientation is adaptable, the angle between the vector normal to the sidewall (12) and the duct axis (13) can be defined as required.
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1- Motorized air circulation valve comprising a geared motor (1), a valve body (2), a rotary axis (3) provided with a shutter (4), said rotary axis (3) being rotated by said gearmotor (1), said gearmotor (1) comprising a reducing gear train, a brushless electric motor (6) formed of a rotor (7) having N pairs of magnetized poles linked to a pinion (8) of said train reduction gears, said pinion (8) driving an output wheel (9) integral with said rotary axis (3) characterized in that the electric motor (6) comprises a stator part (10) having at least two coils (11) , said stator part (10) having 2 angular sectors alphal and alpha2, of respective radii R1 and R2, with R1 greater than R2, the center of the radii and the angular sectors being defined relative to the center of rotation of the rotor (7), the alphal angular sector being defined by the angular difference between the axes of the first and last bob ines (11) considered in a circumferential direction of the motor, in that the alphal angular sector is less than 180 ° and comprises said coils, the alpha2 sector being devoid of a fully registered coil, in that one end of the geared motor (1) defines a sidewall (12) of the geared motor (1) and in that the angular sector alpha2 of the stator part is positioned opposite the sidewall (12).
    [2" id="c-fr-0002]
    2- motorized air circulation valve according to claim 1 characterized in that said pinion (8) directly meshes with the output wheel (9), said gear motor (1) having a single reduction stage.
    [3" id="c-fr-0003]
    3- motorized air circulation valve according to claim 1 characterized in that said stator part (10) comprises wide teeth and narrow teeth respectively extending radially from an annular ring, the wide teeth having a width greater than or equal double the width of the narrow teeth.
    [4" id="c-fr-0004]
    4- Motorized air circulation valve according to claim 1 characterized in that the pinion (8) is of helical shape.
    [5" id="c-fr-0005]
    5- motorized air circulation valve according to claim 1 characterized in that the gearmotor (1) is located above the shutter (4), in that the valve body (2) defines a conduit axis (13) and in that the largest dimension of said geared motor (1) is oriented substantially parallel to the axis of conduit (13).
    [6" id="c-fr-0006]
    6- motorized air circulation valve according to claim 1 characterized in that the geared motor (1) is located above the shutter (4), in that the valve body (2) defines a conduit axis (13) and in that the largest dimension of said geared motor (1) is oriented substantially perpendicular to the axis of conduit (13).
    [7" id="c-fr-0007]
    7- motorized air circulation valve according to claim 1 characterized in that the geared motor (1) comprises a printed circuit (14) on which the motor (6) is electrically connected, in that a magnetosensitive probe (15a) is placed on said printed circuit (14), said rotary axis (3) being integral with a sensor magnet (16a) positioned at the end of axis (3) and facing said magnetosensitive probe (15a).
    [8" id="c-fr-0008]
    8- motorized air circulation valve according to claim 1 characterized in that the gear motor (1) comprises a printed circuit (14) on which the motor (6) is electrically connected, in that a magnetosensitive probe (15b) is placed on said printed circuit (14), said rotary axis (3) being integral with a sensor magnet (16b) in the form of an angular sector rotating at the periphery of the axis (3) and positioned opposite said magnetosensitive probe (15b).
    [9" id="c-fr-0009]
    9- Motorized air circulation valve according to claim 8 characterized in that the sensor magnet (16b) is positioned radially relative to the axis (3), opposite the electric motor (6).
    5 10-motorized air circulation valve according to claim 1 characterized in that said gearmotor (1) is formed by an extension of the valve body (2) on the one hand and a cover (5) on the other go.
    1/5
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    同族专利:
    公开号 | 公开日
    FR3059070B1|2018-11-02|
    WO2018096246A1|2018-05-31|
    EP3545222A1|2019-10-02|
    US20190285190A1|2019-09-19|
    EP3545222B1|2021-02-24|
    JP2019536415A|2019-12-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7591245B2|2006-11-13|2009-09-22|Holley Performance Products, Inc.|Air valve and method of use|
    WO2009034270A2|2007-07-24|2009-03-19|Moving Magnet Technologies |Gear motor including a compact multiple-phase electric motor|
    US20120313025A1|2010-06-29|2012-12-13|Katsunori Takai|Fluid control valve|
    EP1342896B1|2002-03-06|2006-11-02|BorgWarner Inc.|Assembly for electronic throttle control with non-contacting position sensor|
    JP4297037B2|2004-11-11|2009-07-15|株式会社デンソー|Stepping motor|
    NL2005697C2|2010-11-15|2012-05-16|Mci Mirror Controls Int Nl Bv|ADJUSTMENT DEVICE FOR AIR INTAKE, METHOD OF ADJUSTING AN AIR INTAKE WITH AN ADJUSTING DEVICE, MOTOR VEHICLE FITTED WITH AN AIR INTAKE WITH AN ADJUSTING DEVICE.|
    JP5212488B2|2011-01-13|2013-06-19|株式会社デンソー|Sensor module|
    FR2994353B1|2012-08-01|2014-08-08|Moving Magnet Tech|OPTIMIZED ELECTRIC MOTOR WITH NARROW TOOTH|DE102019113274A1|2019-05-20|2020-11-26|HELLA GmbH & Co. KGaA|Electromechanical device with an actuator and an actuator|
    DE102019216803A1|2019-10-30|2021-05-06|Robert Bosch Gmbh|Electric motor for a gear actuator|
    FR3110656A1|2020-05-19|2021-11-26|Bontaz Centre R&D|GEAR MOTOR INCLUDING A DOUBLE DIAMETER STATOR.|
    法律状态:
    2017-10-19| PLFP| Fee payment|Year of fee payment: 2 |
    2018-05-25| PLSC| Publication of the preliminary search report|Effective date: 20180525 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 3 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 4 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 5 |
    2021-10-20| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1661430A|FR3059070B1|2016-11-24|2016-11-24|AIR CIRCULATION VALVE|
    FR1661430|2016-11-24|FR1661430A| FR3059070B1|2016-11-24|2016-11-24|AIR CIRCULATION VALVE|
    JP2019527812A| JP2019536415A|2016-11-24|2017-11-20|Gear motor for air circulation valve in particular|
    PCT/FR2017/053170| WO2018096246A1|2016-11-24|2017-11-20|Gear motor, particularly intended for an air circulation valve|
    US16/463,807| US20190285190A1|2016-11-24|2017-11-20|Gear motor, particularly intended for an air circulation valve|
    EP17811642.2A| EP3545222B1|2016-11-24|2017-11-20|Air circulation valve with gear motor|
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