专利摘要:
Steering wheel for a vehicle, comprising: - a rim (10) comprising an armature (12) having a profile arranged so that in a sectional plane (II-II) an interior space (E) can be circumscribed by the profile, two first planes (AA), and two secondary planes (BB), - at least one illumination device comprising a light-emitting diode (LED) (15), arranged in the rim (10), characterized in that the light-emitting diode ( LED) (15) is arranged at least partially in the interior space (E).
公开号:FR3028476A1
申请号:FR1461127
申请日:2014-11-18
公开日:2016-05-20
发明作者:Olivier Bertrand;Laurent Groleau
申请人:Autoliv Development AB;
IPC主号:
专利说明:

[0001] The present invention generally relates to a steering wheel intended to be mounted on a motor vehicle. It is known in the prior art steering wheels that include light sources such as light emitting diodes, otherwise known as LEDs or LEDs. In particular, the document US5666102 discloses such a steering wheel. In return, integrating light sources in a steering wheel, and especially in the rim, can cause congestion problems because the rim comprises a frame which must be sufficiently resistant in case of vehicle shock. Consequently, implanting light sources into the rim may lead to placing them too close to the outer surface of the rim and cause bright spots, ie points of light concentration that make a source bright does not diffuse a homogeneous light. On the contrary, to implant the light sources far from the external surface of the rim imposes to reduce the structure of the frame, which negatively affects its resistance, because the outer shell of the rim can not be increased. For example, we can define a section of 40mm x 40mm in which rim must be lodged to remain easily graspable. An object of the present invention is to meet the disadvantages of the documents of the prior art mentioned above and in particular, first of all, to propose a steering wheel equipped with light sources such as light emitting diodes (LEDs), without weakening the mechanical strength of the steering wheel, that is to say while meeting the resistance criteria imposed by car manufacturers, and without risking causing hot spots on the surface of the steering wheel. For this purpose a first aspect of the invention relates to a steering wheel for a vehicle, arranged to pivot about a steering column axis, comprising: a rim arranged to be handled by a driver and comprising an armature fastened to at least one branch of the steering wheel and having a profile arranged so that in a section plane containing the steering column axis, an interior space may be circumscribed by: - the profile, and - two first planes, each perpendicular to the section plane and to the steering column axis and tangential to an outer point of the profile, and - two secondary planes, each parallel to the steering column axis, perpendicular to the section plane and tangent to an external point of the profile, at least one illumination device comprising a light-emitting diode (LED), arranged in the rim, characterized in that said at least one light-emitting diode (LED) is arranged e at least partially within the interior space. The illumination device of the steering wheel according to the present implementation 20 is integrated in the profile of the armature of the rim, so that the light-emitting diode can be implanted at a good distance from the outer surface of the rim to avoid the points. hot, without having to change the profile of the frame. Indeed, the light-emitting diode is arranged in the hollow of the profile, as far as possible from the outer surface of the steering wheel. The interior space comprises the profile of the armature and any recessed portion of the profile such as a space defined between flanges of the profile, a cavity, an orifice for example, in which the light-emitting diode can be housed. Advantageously, the armature has a profile with at least two wings connected by a base, such as a U, or a V, or an L.
[0002] Typically, the interior space is located between the flanges of the U-shaped, V-shaped or L-shaped. Advantageously, the profile has a concavity, and said at least one light-emitting diode (LED) is arranged at least partly in the 5 concavity. Advantageously, the concavity is oriented towards the driver. That is, the concavity is arranged in a direction opposite to the dashboard of the vehicle, or in the direction opposite to the steering column. Advantageously, the illumination device comprises: a light diffusion surface, arranged on the surface of the rim, arranged to diffuse outwardly the rim emitted by said at least one light emitting diode (LED); main printed circuit arranged to supply said at least one light-emitting diode (LED), and the main printed circuit is arranged between said at least one light-emitting diode (LED) and the light-scattering surface. This arrangement makes it possible to place the light-emitting diode in a confined space that could not accommodate the main printed circuit. Advantageously, the main printed circuit is arranged at least partially outside the interior space. Advantageously, the steering wheel comprises a light guide arranged to guide light emitted by said at least one light-emitting diode (LED) towards the light-scattering surface, and the light guide extends on both sides of the circuit. main print.
[0003] Advantageously, the steering wheel comprises a secondary printed circuit, supporting said at least one light-emitting diode (LED), and arranged in the interior space. This implementation comprises two separate printed circuits, which makes it possible to size the one carrying the light-emitting diode 3028476 -4 most just to be housed deep within the cavity or the profile of the armature. Advantageously, the illumination device comprises at least two light-emitting diodes arranged in the interior space within five millimeters of one another. The flywheel according to the invention makes it possible to arrange a plurality of light-emitting diodes without weakening the armature, since no hole or thinning in the profile is necessary in the positioning zone of the illumination device. Advantageously, the illumination device comprises means for controlling said at least one light-emitting diode (LED). Advantageously, the control means are remote from the secondary printed circuit. The control means, which are generally of large volume, are not an obstacle in placing said at least one light emitting diode in a small space, since they are not on the same printed circuit. Advantageously, the control means comprise multiplexing and / or demultiplexing means. Advantageously, the illumination device is arranged in a cavity closed by a cover which sandwiches a printed circuit of the illumination device. The sandwiching of the printed circuit improves the sealing: the printed circuit serves as a seal between the frame and the cover. Advantageously, the armature is at least partially covered with a flexible material, such as polyurethane (PU), and the printed circuit is sandwiched between said flexible material and the cover. The printed circuit 25 thus bears on the flexible material which can dampen vibrations and / or act as a seal. A second aspect of the invention is a motor vehicle comprising a steering wheel according to the first aspect of the invention.
[0004] Other features and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention and an alternative given by way of non-limiting examples and illustrated by FIG. the accompanying drawings, in which: - Figure 1 shows a steering wheel according to the invention with a rim; - Figure 2 shows a section of the rim of the steering wheel of Figure 1; FIG. 3 shows in detail an armature of the steering wheel of FIG. 1, also visible on the section of FIG. 2; FIG. 4 shows a variant of the armature of FIG. 3. FIG. 1 shows a steering wheel according to the invention, with a rim 10 in which two illumination devices are integrated, in order to diffuse towards the passenger compartment and in particular the driver, light through light diffusing surfaces 21. The steering wheel also comprises a hub 30 which allows to mount the steering wheel on a steering column, which rotates in rotation about an axis steering column 31.
[0005] Figure 2 shows a section of the rim 10 at the light scattering surface 21, in a section plane II-II which contains the steering column axis 31. The rim 10 comprises a frame 12, generally metal (injected magnesium for example) which provides the rim 10 sufficient mechanical strength to maintain the integrity of the steering wheel in the event of frontal impact of the vehicle with an obstacle for example. The frame 12 has a curved profile as shown to withstand sufficiently while having a limited weight. Typically the frame 302 84 76 -6 12 of the rim 10 is overmolded with a flexible material 22 such as polyurethane, and covered by an outer skin 11 such as leather for example. At the level of the illumination device, the latter comprises: - a light-emitting diode 15, otherwise called LED or LED, which when powered produces light, - a light guide 19 which is arranged to receive the light emitted by the light-emitting diode 15 and guide this light towards the light-diffusing surface 21.
[0006] Advantageously, the light guide 19 guides the light along a trajectory of length between 5 and 30 mm, depending on whether the trajectory is rectilinear or curved. Indeed, it is conceivable that the light guide is non-rectilinear and arranged to reflect light in a particular direction to gain space.
[0007] The light guide 19 and the light diffusing surface 21 are transparent bodies and it is conceivable to manufacture them in polycarbonate, for example. The light-emitting diode 15 is powered by control means, an electronic component 20 which is mounted on a main printed circuit 18. In order to avoid irregularities or light concentrations (or hot spots) on the light-diffusing surface 21, the light-emitting diode 15 is mounted as far as possible from the outer surface of the rim 10. For this purpose, the profile of the armature 12 (which is concave) is oriented towards the conductor, in order to accommodate the electroluminescent diode 15 in the concavity of the profile of the frame 12 without modifying the latter. Advantageously, the light-emitting diode 15 is positioned between 5 and 20mm below the light scattering surface 21 and at a distance less than 1mm from the light guide 19. Advantageously, the electronic component 20 is a multiplexer and / or demultiplexer, in order to limit the number of electrical paths that must pass through the hub 30, in order to simplify the rotary joint that electrically connects the steering wheel and its components to the on-board vehicle network and limit the number of cables to pass through the rim between the hub and the illumination device.
[0008] To be able to house the light-emitting diode 15 deep within the concavity of the profile of the armature 12, that is to say at the smallest possible place, the light-emitting diode 15 is offset from the main printed circuit 18, it is therefore mounted on a secondary printed circuit 16, which is connected to and / or attached to the main printed circuit 18 by arms 17.
[0009] Thus, only the light-emitting diode 15 is mounted on the secondary printed circuit board 16, the size of which is adapted to the light-emitting diode 15 alone. As a result, the light guide 19 passes through the main printed circuit 18 to extend on either side of the latter to guide the light from the light emitting diode 15 towards the light diffusing surface 21. illumination is enclosed in a case or housing that surrounds the frame 12, and which includes a lower cover 13 and an upper cover 14, on which can be clipped the light diffusing surface 21. The lower cover 13 and the top cover 14 can each be clipped, glued, ultrasonically welded or screwed on the steering wheel or between them. As can be understood, the spirit of the invention is to house the light emitting diode 15 as far as possible from the outer surface of the rim 10, without modifying and / or weakening the profile of the armature 12. Since the profile is curved, it has a concavity in which light-emitting diode 15 is housed. In general, it is possible to define an interior space E in which it is advantageous to house at least part of the light-emitting diode 15, as is the case with the electroluminescent diode 15. explained in Figures 3 and 4.
[0010] 3028476 8 We find in Figure 3 the armature 12 of Figure 2 alone. The steering column axis 31 can be represented, and define: two first planes AA, each perpendicular to the section plane 11-11 (the sheet) and to the steering column axis 31 and tangential to an external point of the profile, and - two secondary planes BB, each parallel to the steering column axis 31, perpendicular to the section plane 11-11 and tangent to an outer point of the profile, the intersection of these four planes with the plane section Il-II to 10 circumscribing the section of the frame 12. The interior space E is then circumscribed by the profile of the frame 12, the first two planes AA (in particular the closest plane AA of the driver ), and the two secondary planes BB, and at least partially implanting the light-emitting diode 15 in this interior space E 15 makes it possible to move it away from the outer surface of the rim 10, without modifying the profile of the frame 12. Implicitly, the first AA plans are distinct and located on either side of the outer profile of the armature 12, just like the two secondary planes B-B.
[0011] FIG. 4 represents an alternative for the profile of the armature 12. For FIG. 3, the profile approaches a W, and for FIG. 4, it is close to an L or a J. For FIG. 4 defines the interior space E in the same way as for FIG. 3, it is delimited (circumscribed) by the profile of the armature, the first two planes AA (in particular the nearest AA plane) of the driver) and the two secondary planes BB. As for FIG. 3, the first two planes AA are each perpendicular to the section plane 11-11 (the sheet) and to the steering column axis 31 and tangent to an external point of the profile, and the two secondary planes BB are each parallel to the axis of 3028476 -9 steering column 31, perpendicular to the section plane Il-Il and tangent to an outer point of the profile. 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 herein without departing from the scope of the invention defined by the appended claims. In particular, reference is made to a printed circuit board, it should be understood that this is a substrate on which electronic components can be fixed and supplied with current. 10
权利要求:
Claims (12)
[0001]
REVENDICATIONS1. Steering wheel for a vehicle, arranged to pivot about a steering column axis (31), comprising: - a rim (10) arranged to be handled by a driver and comprising an armature (12) attached to at least one a branch of the steering wheel and having a profile arranged so that in a section plane (II-II) containing the steering column axis (31), an interior space (E) can be circumscribed by: - the profile, and two first planes (AA), each perpendicular to the section plane (II-II) and to the steering column axis (31) and tangential to an outer point of the profile, and - two secondary planes (BB), each parallel to the steering column axis (31), perpendicular to the sectional plane (11-10 and tangent to an external point of the profile), - at least one illumination device comprising at least one light-emitting diode (LED) (15). ), arranged in the rim (10), characterized in that said at least one light emitting diode (L ED) (15) is arranged at least partially in the inner space (E).
[0002]
2. steering wheel according to the preceding claim, wherein the profile has a concavity, and wherein said at least one light emitting diode (LED) (15) is arranged at least partly in the concavity.
[0003]
3. Steering wheel according to the preceding claim, wherein the concavity is oriented towards the driver.
[0004]
4. steering wheel according to one of the preceding claims, wherein the illumination device comprises: - a light diffusion surface (21), arranged on the surface of the rim (10), arranged to diffuse outwardly from the rim (10) the light emitted 302 84 76 by said at least one light-emitting diode (LED) (15) - a main printed circuit (18) arranged to supply said at least one light-emitting diode (LED) (15), and wherein the main printed circuit (18) is arranged between said at least one light emitting diode (LED) (15) and the light scattering surface (21).
[0005]
5. steering wheel according to the preceding claim, wherein the main printed circuit (18) is arranged at least partially outside the inner space (E). 10
[0006]
Steering wheel according to one of claims 4 or 5, comprising a light guide (19) arranged to guide light emitted by said at least one light-emitting diode (LED) (15) towards the light-diffusing surface (21), wherein the light guide (19) extends on either side of the main printed circuit (18). 15
[0007]
Steering wheel according to one of Claims 4 to 6, comprising a secondary printed circuit (16) supporting said at least one light-emitting diode (LED) (15) and arranged in the interior space (E).
[0008]
8. Steering wheel according to one of the preceding claims, wherein the illumination device comprises means for controlling said at least one light-emitting diode (LED) (15).
[0009]
9. steering wheel according to the preceding claim, in its dependence on claim 7, wherein the control means are remote from the secondary printed circuit (16).
[0010]
10. Steering wheel according to one of the preceding claims, wherein the illumination device is arranged in a cavity closed by a cover which sandwiched a printed circuit of the illumination device.
[0011]
11. Steering wheel according to the preceding claim, wherein the armature (12) is at least partially covered with a flexible material (22) and wherein the printed circuit is sandwiched between said flexible material and the hood.
[0012]
12. Motor vehicle comprising a steering wheel according to one of the preceding claims. 5
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同族专利:
公开号 | 公开日
FR3028476B1|2018-12-07|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题
JP2001114112A|1999-10-18|2001-04-24|T S Tec Kk|Light-emitting steering wheel|
US20140109719A1|2012-10-23|2014-04-24|Tk Holdings, Inc.|Steering Wheel Light Bar|WO2019137699A1|2018-01-15|2019-07-18|Bayerische Motoren Werke Aktiengesellschaft|Steering wheel for a motor vehicle, method for providing a steering wheel for a motor vehicle, and motor vehicle|
US10696217B2|2017-01-04|2020-06-30|Joyson Safety Systems Acquisition|Vehicle illumination systems and methods|
US10780908B2|2014-07-23|2020-09-22|Joyson Safety Systems Acquisition Llc|Steering grip light bar systems|
FR3096940A1|2019-06-05|2020-12-11|Luxor Lighting|Set of a steering wheel of a motor vehicle and a device for lighting the steering wheel|
US10953791B2|2018-03-08|2021-03-23|Joyson Safety Systems Acquisition Llc|Vehicle illumination systems and methods|
法律状态:
2015-11-23| PLFP| Fee payment|Year of fee payment: 2 |
2016-05-20| PLSC| Search report ready|Effective date: 20160520 |
2016-11-29| PLFP| Fee payment|Year of fee payment: 3 |
2017-11-27| PLFP| Fee payment|Year of fee payment: 4 |
2018-11-30| PLFP| Fee payment|Year of fee payment: 5 |
2020-10-16| ST| Notification of lapse|Effective date: 20200910 |
优先权:
申请号 | 申请日 | 专利标题
FR1461127A|FR3028476B1|2014-11-18|2014-11-18|WHEEL OF VEHICLE|
FR1461127|2014-11-18|FR1461127A| FR3028476B1|2014-11-18|2014-11-18|WHEEL OF VEHICLE|
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