• 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:
    Vehicle steering wheel comprising: - a rim, - a plurality of presence sensors, each arranged to detect a proximity and / or contact between a member of a user and the rim, - an outer sheath covering the plurality of presence sensors and sewn with at least one seam which extends along at least a portion of the rim, characterized in that said plurality of presence sensors is mounted on the same support, and in that at least one of said sensors presence is arranged facing at least a portion of the seam of the outer sheath.
    公开号:FR3043381A1
    申请号:FR1560778
    申请日:2015-11-11
    公开日:2017-05-12
    发明作者:Jonathan Boittiaux；Fabrice Moinard
    申请人:Autoliv Development AB；
    IPC主号:
    专利说明:

    WHEEL OF VEHICLE
    The present invention generally relates to a vehicle steering wheel mounted on a motor vehicle and which is equipped with presence sensors to detect whether the driver holds the steering wheel or the cowl, to send for example an alarm in the latter case.
    It is known in the prior art flying wheels with a rim equipped with such presence sensors, such as that disclosed by US2004267422. In return, this system has the disadvantage of proposing several sensors difficult to position on the steering wheel and hold in place during manufacture. Moreover, taking into account that these presence sensors must not be visible, it is necessary to arrange them under the external surface of the rim, and it is therefore necessary either to position them under a sheath (leather for example), drown or overmould them with a plastic material (such as polyurethane for example). As a result, this plurality of presence sensors is a disadvantage for the manufacture of the steering wheel.
    An object of the present invention is to meet the disadvantages of the document of the prior art mentioned above and in particular, first of all, to propose a vehicle steering wheel with several presence sensors, but whose manufacture is simplified.
    For this purpose a first aspect of the invention relates to a vehicle steering wheel comprising: - a rim, - a plurality of presence sensors, each arranged: - to define on the rim a detection zone among a plurality of discrete detection zones, and for detecting proximity and / or contact between a user's limb and said detection zone, an outer sheath covering the plurality of presence sensors and sewn with at least one stitch extending along at least a portion of the rim, characterized in that said plurality of presence sensors is mounted on the same support, and in that at least one of said presence sensors is arranged facing at least a portion of the seam of the outer sheath, so as to define a detection zone which includes at least a portion of said at least one seam and which extends on either side of said at least one seam, in a direction transverse to the said at least one seam.
    The flywheel according to the implementation above (with a sewn outer sheath which covers the rim) comprises several sensors but they are integral with one and the same support, which simplifies handling and maintenance in place when the making. In addition, one of the presence sensors is opposite the seam of the outer sheath running along the rim.
    Such a stitch connects the two longitudinal edges of the outer sheath to close the workpiece on the rim. Indeed, before mounting on the steering wheel, the outer sheath is typically a piece of material of generally rectangular shape. This rectangle has two longitudinal edges whose length is substantially that of the inner perimeter of the rim (since the seam is inside the rim, facing the hub), and which are thus sewn together, edge to edge for example . In addition, this rectangle has two lateral edges whose length is substantially that of the perimeter of a section of the rim in a plane containing the axis of a steering column.
    To return to the presence sensor facing the seam of the outer sheath, it extends along the seam and also on both sides of the latter and can detect a proximity and / or a contact with a detection zone encompassing the seam, and going on either side of this seam. In other words, it is possible to detect with a single sensor whether the driver touches the steering wheel on an inner portion of the rim (a portion facing the hub). This implementation therefore also improves the manufacturing by simplifying the overall architecture: a single presence sensor is sufficient and makes it possible to detect a proximity and / or a contact on the seam and on both sides of the seam (with respect to longitudinal direction of the seam).
    Compared with a steering wheel comprising a presence sensor that surrounds the rim, with a joining zone (where the sensor edges meet without touching) arranged at the seam where the detection is impossible because of the space between the edges of the presence sensor, the invention provides a detection advantage at the seam, with a single presence sensor. In other words, the invention makes use of the space between two detection zones to position the joining zone. This optimizes the coverage of the detection zone.
    Advantageously, the sensors are of the capacitive type.
    Advantageously, said at least one seam passes through only the outer sheath. This implementation makes it possible not to affect the presence sensor which is opposite the seam.
    Another aspect of the invention relates to a vehicle steering wheel comprising: - a rim, - a plurality of presence sensors, each arranged: - to define on the rim a detection zone among a plurality of discrete detection zones, and - for detecting a proximity and / or contact between a member of a user and said detection zone, - a hub, connected to the rim by at least one branch, - an external plastic skin, covering at least the plurality of presence sensors, characterized in that said plurality of presence sensors is mounted on the same support, and in that at least one of said presence sensors is arranged along at least part of an inner perimeter of the rim which is opposite the hub, so as to define a detection zone which encompasses at least a portion of said at least one inner perimeter and which extends on either side of said at least one inner perimeter, in a transverse direction of said at least one inner perimeter.
    The flywheel according to the above implementation (with a smooth and continuous outer skin, or seamless along the rim and covering the rim and overmoulding or embedding the plurality of presence sensors) comprises several sensors but these are integral with one and the same support, which simplifies handling and maintenance in place during manufacture. In addition, one of the presence sensors is arranged at the inner perimeter of the rim (the part opposite the hub) and therefore extends along at least part of this inner perimeter and also on the other hand. other, which allows to detect a proximity and / or contact between a detection zone that encompasses the inner perimeter, and goes on both sides of the inner perimeter. In other words, it is possible to detect with a single sensor whether the driver touches the steering wheel on an inner portion of the rim (a portion facing the hub). This implementation therefore also improves the manufacturing by simplifying the overall architecture: a single presence sensor is sufficient and makes it possible to detect a proximity and / or a contact on the inner perimeter and on both sides of the latter (relative to in the longitudinal direction of the inner perimeter).
    Thus, the invention makes it possible to provide a detection for a flywheel with sewn sheath or seamless sheath in areas that normally have no presence detection.
    Advantageously, the vehicle steering wheel comprises: a first presence sensor arranged to detect a proximity and / or a contact between a member of a user and a first detection zone arranged on an inner portion of the rim, a second sensor presence sensor arranged to detect a proximity and / or a contact between a member of a user and a second detection zone arranged on a first half of an outer portion of the rim, - a third presence sensor arranged to detect a proximity and / or a contact between a member of a user and a third detection zone arranged on a second half of an outer portion of the rim. The steering wheel according to this implementation makes it possible to differentiate the grip of the user. If the latter touches the steering wheel on an inner portion of the rim, it is the first presence sensor that will detect it. If the user touches the steering wheel only with his right hand on the outside of the rim, it is one of the second or third presence sensor that will detect it. Finally, if the driver touches the steering wheel only with his left hand on the outside of the rim, it is the other of the second or third presence sensor that will detect it. Of course, the detection can take into account the rotation of the steering wheel to determine the left of the right.
    Advantageously, the vehicle steering wheel comprises at least one branch to connect the rim to a hub, and the first presence sensor bypasses said at least one branch and / or comprises a cutout to bypass said at least one branch, and covers at least two portions of the inner perimeter separated by said at least one branch.
    Advantageously, the first presence sensor covers at least partially each portion of the inner perimeter separated by said at least one branch.
    Advantageously, each of the plurality of presence sensors is arranged to continuously detect a proximity and / or a contact between a member of a user and his respective detection zone.
    Advantageously, the support with the presence sensors forms a detection sheet comprising the support formed by an electrical insulator such as polyethylene supporting on a first face the presence sensors formed for example with at least one film or conductive fabric formed for example with a polyamide yarn coated with at least nickel, and supporting on a second side at least one film or conductive electrical mass fabric, formed for example with a polyamide wire coated with at least nickel. The insulating support may be foamed polyethylene, for example. The presence sensors and / or the conductive mass film are in the form of sheet or film, and may be woven or non-woven materials. However, the formed detection web is flexible (it can wrap around the rim and even deform to stretch or compress so as not to form folds during installation.
    Advantageously, the detection sheet comprises a single film or electrically conductive mass tissue. This makes it possible to simplify the construction of the detection sheet and to limit the number of connections with the vehicle.
    Advantageously, the detection sheet and / or the support with the presence sensors has an elongate and flat shape before being placed around the rim, with two longitudinal edges and two lateral edges.
    Advantageously, the wheel rim substantially forms a torus, obtained by rotation of a section of the rim around a circle of radius R.
    Advantageously, the longitudinal edges have a length that is substantially equal to a perimeter of the circle of radius R.
    Advantageously, the lateral edges have a length that is substantially equal to a perimeter of the section of the rim (in a section or section by a plane containing the axis of rotation of the steering wheel, or the hub, or the steering column)
    Advantageously, the detection sheet has an elongate shape, with two longitudinal edges each connecting in the longitudinal direction two ends, and in which the plurality of presence sensors and said at least one film or conductive electrical mass fabric each have a connecting portion, and wherein the connection portions are all arranged on the same longitudinal edge. This implementation makes it possible to simplify the electrical connection of the detection layer, with all the connection portions on the same side of the detection layer.
    Advantageously, the connection portions are positioned in a connection zone between the rim and at least one branch. Preferably the connection zone is located in the lower part of the steering wheel otherwise called zone at six o'clock. This makes it possible to optimize the positioning of the connection zones with respect to the detection zones.
    Advantageously, the connecting portion of the second sensor and the connecting portion of the third sensor are arranged on either side of the first sensor.
    Advantageously, the connection portion of the first sensor is arranged between the second sensor and the third sensor.
    Advantageously, the vehicle steering wheel comprises at least one branch connecting the rim to a hub, with a first lateral edge of the said at least one branch connecting the rim with a first radius of curvature and a second lateral edge of the said at least one connecting branch. the rim with a second radius of curvature greater than the first radius of curvature, the support and at least one of the presence sensors covers a portion of said at least one branch, and the support and said at least one of the sensors have a cutout shifted towards the first lateral edge, with respect to a width of said at least one branch. This implementation facilitates the cutting of the pattern or the flat shape of the detection sheet, bringing the cutout side edge which has the smallest radius of curvature. This also makes it easier for the driver to sheathe on the steering wheel and limit the risk of wrinkling.
    Another aspect of the invention relates to a motor vehicle comprising a steering wheel according to the preceding aspects. Other features and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention given by way of non-limiting example and illustrated by the appended drawings, in which: - Figure 1 shows a front view of a vehicle steering wheel according to the present invention, with three areas of proximity detection and / or contact between a member of a user and the rim; FIG. 2 shows a cross-section of the vehicle steering wheel of FIG. 1 along axis II-II; FIG. 3 represents a detail of the section shown in FIG. 2; FIG. 4 represents a first embodiment of a lap of FIG. detection defining the three detection zones of Figure 1; FIG. 5 represents an alternative of the detection sheet of FIG. 4.
    FIG. 1 shows a vehicle steering wheel comprising a rim 10, a hub 30, connected to the rim 10 by three branches 21, 22, 23. According to the invention, the steering wheel comprises a plurality of presence sensors 41, 42, 43 (visible in FIG. 3) arranged under an outer sheath 16 (visible in FIG. 2, and in leather for example).
    During manufacture, the outer sheath 16 is placed on the wheel and in particular on the rim 10, then sewn on itself with at least one seam 15 which extends along the rim 10 and visible in FIG. 2.
    Each presence sensor of the plurality of presence sensors 41, 42, 43 defines a detection zone 11, 12 and 13 of proximity and / or of contact between a member of a user and the rim 10. As can be seen on 1, the detection zone 11 is located on the inner portion of the rim 10, that is to say on its portion facing the hub 30. That is to say that the detection zone 11 includes the seam 15 of the outer sheath 16, and extends even on both sides of the seam 15 to cover the entire inner portion of the rim 10 facing the hub 30, as can be seen in Figure 2.
    FIG. 2 is a section along the axis II-II shown in FIG. 1, in which a detection sheet 40 is seen which is under the outer sheath 16. This detection sheet 40 comprises a support on which the sensors of FIG. presence 41, 42, and 43, as seen in FIG. 3 for the presence sensor 41.
    At the level of FIG. 2, it can be seen on the upper section of the rim 10 that the detection sheet 40 is wound around the rim 10, with a joint which is located at approximately 15 o'clock, that is to say the opposite of the driver. This section, surrounded by zone III is also detailed figure 3.
    In other words, the joint zone where the longitudinal edges of the detection ply are facing each other is not under the seam 15, as is generally the case when elements are sheathed on the rim. of a steering wheel. This jointing zone is angularly offset, which makes it possible to have only one presence sensor 41 to define a single detection zone 11, which is continuous. The implementation of general knowledge, with a jointing zone under the seam, would necessarily generate, under the seam, a zone without detection. It should be noted that the edges of the detection sheet 40 do not touch, or that there is no electrical contact between these edges.
    Finally, at the level of FIG. 2, it can be seen at the junction of the branch 21 with the rim 10 that the detection sheet 40 covers part of the branch 21. Because of the connection radii between the branches 21, 22, 23, one can provide cutouts in the detection web 40 to cover from the same pattern these branch portions. If, as for the branch 22, there are two different connection radii R1 and R2, then it is advantageous to provide the cutout on the smaller radius side, to limit the folds of the detection ply 40 during manufacture. For example, the cutting may take place at the line 47 shown in Figure 1, which is closer to the radius R1 than the radius R2, in the direction of the width of the branch 22. Preferably, the cut is made on a part the detection web 40 which is at the rear of the steering wheel, on the opposite side to the driver.
    FIG. 4 represents a first implementation of a detection sheet 40. This therefore comprises all the presence sensors 41, 42, 43, a film or mass tissue 44, and the support (not visible) arranged between the presence sensors 41, 42, 43, and the film or mass tissue 44. Typically, the presence sensors 41, 42, 43, and the film or mass tissues 44 are sheets or film or fabrics comprising at least one polyamide wire at least partially covered with nickel. In other words, the presence sensors 41, 42, 43 are capacitive sensors, with the detection layer 40 forming a sandwich or composite for this purpose. The support is an electrical insulator, and can be made of foamed polyethylene for example. In this figure and FIG. 5, the future position of the seam 15 is represented by the dashed line 46.
    The presence sensors 41, 42, 43, and the film or mass fabrics 44 therefore need to be electrically connected, and there are provided in the region 45 connection portions to an on-board network of the vehicle. To simplify the assembly, all the connection portions are arranged on the same edge of the detection sheet 40, one of the longitudinal edges, if it has a rectangular shape as here. It should be noted that the form presented here is a diagram, and it should be borne in mind that the detection web 40 according to the invention may include recesses to circumvent the branches 21,22, 23 of the steering wheel.
    In the present case, the connection portion of the presence sensor 41 is arranged between the two other presence sensors 42 and 43. If a connection with the on-board network is envisaged at the level of the lower branch 21 (located at 6 o'clock) , making it possible to use the presence sensors 42 and 43 to detect a presence on the left or right exterior of the steering wheel, then the two ends of the detection sheet 40 will be arranged at 12 o'clock on the steering wheel. The positioning of the connection zone 45 on the longitudinal side opposite to the dotted line 46 causes a positioning of this connection area on the steering wheel, once the detection sheet sheathed on the steering wheel, above the branch 21. This is simplifies the subsequent connection to the vehicle network because the branch 21 does not have to be crossed by a harness to connect the detection layer to the hub. Also, all connections are made at one and the same branch, which provides a single electrical harness.
    Alternatively, as shown in FIG. 5, the connection portions at the ends of a connecting ply 40 'may be provided, where the presence sensor 41' is arranged between a connection portion of the presence sensor 42 'and a connection portion of the presence sensor 43 '. There is of course also a connection portion of the presence sensor 41 'and a connecting portion of the film or mass fabrics 44', also at the ends, and always on the same longitudinal side of the connecting ply 40 '. The positioning of the connection zone 45 'on the nearest longitudinal side of the dotted line 46 causes positioning of this connection area on the steering wheel, once the detection sheet sheathed on the steering wheel, below the branch 21 This requires crossing or bypassing the branch 21 by an electrical harness to connect the detection layer to the hub. Here again all the connections are made at one and the same branch, which provides a simple electrical harness.
    It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the various embodiments of the invention described in the present description without departing from the scope of the invention defined by the appended claims.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    A vehicle steering wheel comprising: - a rim (10), - a plurality of presence sensors (41, 42, 43), each arranged: - to define on the rim (10) a detection zone among a plurality of zones detecting means (11, 12, 13), and - for detecting a proximity and / or contact between a member of a user and said detection zone, - an outer sheath (16) covering the plurality of presence sensors ( 41,42,43) and stitched with at least one seam (15) extending along at least a portion of the rim (10), characterized in that said plurality of presence sensors (41,42, 43) is mounted on the same support, and in that at least one of said presence sensors (41, 42, 43) is arranged facing at least a portion of the seam (15) of the outer sheath (16). ), so as to define a detection zone which includes at least a portion of said at least one seam (15) and which extends on either side of said at least one seam (15). a seam (15) in a direction transverse to said at least one seam (15).
    [2" id="c-fr-0002]
    2. Vehicle steering wheel according to the preceding claim, wherein said at least one seam (15) passes through the outer sheath (16).
    [3" id="c-fr-0003]
    Vehicle steering wheel comprising: - a rim (10), - a plurality of presence sensors (41, 42, 43), each arranged: - to define on the rim (10) a detection zone among a plurality of zones detecting means (11, 12, 13), and - for detecting proximity and / or contact between a user's limb and said detection zone, - a hub, connected to the rim (10) by at least one branch (21, 22, 23), - an outer plastic skin, covering at least the plurality of presence sensors (41, 42, 43), characterized in that said plurality of presence sensors (41, 42, 43 ) is mounted on the same support, and in that at least one of said presence sensors (41, 42, 43) is arranged along at least part of an inner perimeter of the rim (10) which is opposite the hub, so as to define a detection zone which includes at least a part of said at least one inner perimeter and which extends from another of said at least one inner perimeter, in a transverse direction of said at least one inner perimeter.
    [4" id="c-fr-0004]
    Vehicle steering wheel according to one of the preceding claims, comprising: - a first presence sensor (41) arranged to detect proximity and / or contact between a member of a user and a first detection zone (11) arranged on an inner portion of the rim (10), - a second presence sensor (42) arranged to detect a proximity and / or a contact between a member of a user and a second detection zone (12) arranged on a first half of an outer portion of the rim (10), - a third presence sensor (43) arranged to detect a proximity and / or a contact between a member of a user and a third detection zone (13) arranged on a second half of an outer portion of the rim (10).
    [5" id="c-fr-0005]
    5. Vehicle steering wheel according to one of the preceding claims, wherein the support with the presence sensors (41,42, 43) forms a detection sheet (40) comprising the support formed by an electrical insulator such as supporting polyethylene. on a first face the presence sensors (41, 42, 43) formed for example with a polyamide wire coated with at least nickel, and supporting on a second side at least one film or electrically conductive mass tissue, formed for example with a polyamide thread covered with at least nickel.
    [6" id="c-fr-0006]
    6. Vehicle steering wheel according to the preceding claim, wherein the detection web (40) comprises a single film or electric conductive mass tissue
    [7" id="c-fr-0007]
    7. Vehicle steering wheel according to one of claims 5 or 6, wherein the detection web (40) has an elongate shape, with two longitudinal edges each connecting in the longitudinal direction two ends, and wherein the plurality of presence sensors (41, 42, 43) and said at least one film or conductive electrical ground fabric each have a connection portion, and wherein the connection portions are all arranged on the same side edge.
    [8" id="c-fr-0008]
    8. Vehicle steering wheel according to the preceding claim, in its dependence on claim 4, wherein the connecting portion of the second sensor (42) and the connecting portion of the third sensor (43) are arranged on either side of the first sensor (41).
    [9" id="c-fr-0009]
    Vehicle steering wheel according to claim 7, in its dependence on claim 4, wherein the connecting portion of the first sensor (41) is arranged between the second sensor (42) and the third sensor (43).
    [10" id="c-fr-0010]
    10. Vehicle steering wheel according to one of the preceding claims, comprising at least one leg (21, 22, 23) connecting the rim (10) to a hub, with a first side edge of said at least one leg (21,22). , 23) connecting the rim (10) with a first radius of curvature and a second lateral edge of said at least one leg (21, 22, 23) connecting the rim (10) with a second radius of curvature greater than the first radius of curvature, wherein the support and at least one of the presence sensors (41, 42, 43) covers a portion of said at least one limb (21, 22, 23), and wherein the carrier and said at least one sensors have a cutoff offset to the first side edge, with respect to a width of said at least one leg (21,22,23).
    [11" id="c-fr-0011]
    11. Motor vehicle comprising a steering wheel according to one of the preceding claims.
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    FR3005926B1|2013-05-27|2017-01-13|Autoliv Dev|WHEEL OF VEHICLE|
    FR3006976B1|2013-06-14|2016-02-26|Autoliv Dev|WHEEL OF VEHICLE|
    JP6482760B2|2014-02-07|2019-03-13|株式会社フジクラ|Capacitance sensor, steering and steering system|
    CN105253188A|2014-07-15|2016-01-20|奥托立夫开发公司|Automobile steering wheel|
    US20160097154A1|2014-10-01|2016-04-07|Autoliv Asp, Inc.|Engineered leather for airbag, steering wheel, and seatbelt applications|
    FR3040965B1|2015-09-15|2018-08-03|Autoliv Development Ab|WHEEL OF VEHICLE|
    DE102015218424A1|2015-09-24|2017-03-30|Volkswagen Aktiengesellschaft|Method for producing a paneled steering wheel for a vehicle as well as steering wheel that can be produced by the method|
    US10814899B2|2018-06-27|2020-10-27|Rivian Ip Holdings, Llc|Steering wheel having a cover with a layered seam|US7823675B2|2008-07-18|2010-11-02|Ali Kermani|Drifting kart|
    USD761700S1|2009-07-20|2016-07-19|Ali Kermani|Drifting kart|
    USD771196S1|2014-06-03|2016-11-08|Razor Usa Llc|Drifting kart|
    WO2019207883A1|2018-04-23|2019-10-31|パナソニックＩｐマネジメント株式会社|Electrode connection structure and electrode connection method|
    KR102222855B1|2020-03-03|2021-03-04|유니텔전자 |Steering assistance system provided in the steering wheel and steering control method using the same|
    CN112722050A|2021-01-15|2021-04-30|安闻汽车技术有限公司|Steering wheel sensor and steering wheel|
    法律状态:
    2016-11-29| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-12| PLSC| Publication of the preliminary search report|Effective date: 20170512 |
    2017-11-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-28| PLFP| Fee payment|Year of fee payment: 5 |
    2020-11-27| PLFP| Fee payment|Year of fee payment: 6 |
    2021-11-26| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1560778A|FR3043381B1|2015-11-11|2015-11-11|WHEEL OF VEHICLE|
    FR1560778|2015-11-11|FR1560778A| FR3043381B1|2015-11-11|2015-11-11|WHEEL OF VEHICLE|
    CN201810730771.4A| CN109017964B|2015-11-11|2016-11-11|Vehicle steering wheel|
    EP21156202.0A| EP3838717A1|2015-11-11|2016-11-11|Vehicle steering wheel|
    EP16801162.5A| EP3374248B1|2015-11-11|2016-11-11|Steering wheel|
    KR1020187016440A| KR20180083365A|2015-11-11|2016-11-11|Vehicle steering wheel|
    PCT/EP2016/077447| WO2017081262A1|2015-11-11|2016-11-11|Vehicle steering wheel|
    US15/774,473| US11136057B2|2015-11-11|2016-11-11|Vehicle steering wheel|
    JP2018521249A| JP6985261B2|2015-11-11|2016-11-11|Vehicle steering wheel|
    CN201680066161.8A| CN108349519B|2015-11-11|2016-11-11|Vehicle steering wheel|
    KR1020187016688A| KR20180075679A|2015-11-11|2016-11-11|Vehicle steering wheel|
    US15/974,080| US10822014B2|2015-11-11|2018-05-08|Vehicle steering wheel|
    JP2018120437A| JP6719165B2|2015-11-11|2018-06-26|Vehicle steering wheel|
    US17/465,922| US20210394811A1|2015-11-11|2021-09-03|Vehicle Steering Wheel|
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