Foldable visual signaling device and vehicle equipped with such a device

Abstract

The invention provides a visual signaling device (12) comprising: • a base (20) and a movable chassis (30), • a signaling structure (14) articulated on the movable chassis with means for returning it to its neutral position relative to the movable chassis (36), characterized in that: • the device includes a passive lock (50) for locking the signaling structure (14) in the folded position, • and in that unlocking the signaling structure (14) from its folded position is achieved by activating a motorized actuator (30) to cause a pivoting movement of the movable chassis (36) from a folded position to a service position, thereby disengaging a locking element (54) attached to the signaling structure (14) from a locking element (52) attached to the base (20). Abstract figure: FIG. 10

Description

Title of the invention: Folding visual signaling device and vehicle equipped with such a device technical field

[0001] The invention relates to the field of folding visual signaling devices, in particular folding visual signaling devices intended to be fixed on an external motor vehicle. Technical background

[0002] Retractable visual signaling devices are known, designed to be fixed to a motor vehicle and comprising a signaling structure that is movable between an upright position, in which it is easily visible from the vehicle's surroundings, and a retracted position, in which it has a reduced footprint relative to the vehicle's exterior. Typically, in the upright position, the signaling structure extends in a plane perpendicular to the vehicle's direction of travel. Conversely, in the retracted position, the signaling structure extends in a plane perpendicular to the vehicle's direction of travel to reduce the device's footprint relative to the vehicle's exterior.

[0003] It is also known to provide that the movement of the signaling structure, between its folded and upright positions, is operated by a motorized actuator, which can, for example, be remotely controlled by an operator. This makes it possible, in particular, to place the signaling device in a location that is not easily accessible to the operator.

[0004] Furthermore, it is also known to provide a system for retracting the signaling structure, particularly when it is in the erect position, in order to allow the structure to retract in the event of a collision with an element external to the vehicle, particularly when the vehicle is moving with the signaling structure in the erect position.

[0005] One problem to be solved in the context of a visual signaling device is that of maintaining the signaling structure in its folded position. Such maintenance must be effective. In the case of a signaling device mounted on a motor vehicle, this maintenance must be effective even with respect to vibrations, shocks, and aerodynamic forces that may be applied to the device when the vehicle is moving, particularly at normal road and / or motorway speeds. An objective to be achieved in the design of a means of maintaining the device in the folded position is that it be inexpensive and easy to use. Description of the invention

[0006] The invention proposes a visual signaling device comprising: • a base, • a mobile chassis that is mounted on the base and can pivot around a folding axis between a service position and a folding position, • a motorized actuator for moving the mobile chassis, capable of moving the mobile chassis from its service position to its folded position, and vice versa, • a signaling structure that is articulated on the mobile chassis by at least one retracting hinge around at least one first retracting axis parallel to the folding axis and distinct from the folding axis, the signaling structure comprising at least one visual signaling means and being movable relative to the mobile chassis in a first retracting direction in rotation around the first retracting axis, from a neutral position of the signaling structure relative to the mobile chassis, and the signaling structure occupying, relative to the base, when it is in its neutral position relative to the mobile chassis, an upright position when the mobile chassis is in the service position, and a folded position when the mobile chassis is in the folded position, and • means of returning the signaling structure to its neutral position relative to the moving chassis.

[0007] The device includes a passive locking mechanism for the folded position of the signaling structure relative to the base, the passive locking mechanism comprising a locking element linked to the base and a locking element linked to the signaling structure which, in a relative locking position, lock the rotation of the signaling structure in the folded position around the folding axis, by butting the two locking elements together at a locking point along a locking direction which, at the locking point, is tangential to a pivot around the folding axis.

[0008] The locking point of the passive lock is located at a distance from the folding axis and the first retracting axis.

[0009] Unlocking the signaling structure from its folded position is achieved by controlling the motorized actuator to cause a pivoting movement of the mobile chassis, from its folded position to its service position, the retracting hinge allowing rotation of the signaling structure relative to the mobile chassis in the first retraction direction rotating around the first retraction axis, and the signaling structure moving relative to the base, along a clearance direction perpendicular to the locking direction, with a clearance distance allowing the locking element linked to the signaling structure to be released from the locking element linked to the base.

[0010] Such a device allows the structure to be locked and unlocked in the folded position without the addition of an active element. This locking mechanism, which is beneficial from a safety standpoint, is achieved at a lower cost and offers very high reliability.

[0011] Other optional features of the invention are listed below and can each be implemented alone or in combination.

[0012] The locking element attached to the base and the locking element attached to the signaling structure can be movable relative to each other, along a relative retraction direction perpendicular to the locking direction, between the relative locking position and a relative retraction position in which they allow the signaling structure to rotate around the folding axis. The perpendicularity between the relative retraction direction and the locking direction ensures that, regardless of the forces generated along the locking direction, they will not be able to cause unintended retraction of the locking elements, thus guaranteeing locking even under high stress.

[0013] The passive lock may include return means that return the locking element linked to the base and the locking element linked to the signaling structure to their relative locked positions, according to the direction of release. This reinforces the passive nature of the system, resulting in cost savings, ease of integration, and increased reliability.

[0014] The passive lock may include a one-way clearing ramp that forces the two locking elements to move towards their clearing position in the clearing direction, against the return means, when the signaling structure reaches its folded position, only when the signaling structure moves towards its folded position. The implementation of such a one-way clearing ramp enhances the passive nature of the system, resulting in cost savings, ease of integration, and increased reliability.

[0015] The device can be configured such that, during a pivoting of the mobile chassis around the folding axis, from its folded position to its service position, the first retracting axis moves away from the locking point. Such an arrangement contributes to the use of the pivoting movement of the mobile chassis to ensure automatic and passive unlocking, at a cost minimal.

[0016] The device can be configured such that the first rotational retraction direction of the signaling structure around the first retraction axis is in the opposite direction to the rotational direction of the pivoting movement of the mobile chassis, from its retracted position to its service position, around the retraction axis. These opposite rotations contribute to compact kinematics of the elements during unlocking.

[0017] At least one of the locking elements can be arranged at a free end of an elastic blade, to ensure at a lower cost an elastic return bringing the two locking elements back into their relative locking position.

[0018] At least one of the locking elements can be rigid, which allows it to be made at a lower cost.

[0019] The locking element attached to the signaling structure can be arranged at one end of the signaling structure opposite the retracting hinge in a direction perpendicular to the folding axis. This makes it possible to obtain a significant locking torque while minimizing the locking forces on the locking elements.

[0020] The base of the device may include a fairing for the signaling structure in the folded position, in order to minimize the aerodynamic impact of the device and to minimize the aerodynamic forces on the signaling structure in the folded position.

[0021] In an application, the signaling structure may include a sign panel and / or a light source.

[0022] The invention also relates to a motor vehicle comprising a visual signaling device having any of the preceding characteristics, characterized in that the visual signaling device is arranged on the vehicle in such a way that, in the folded position of the signaling structure, an end of the signaling structure which is opposite the retracting joint in a direction perpendicular to the folding axis is arranged in front of the folding axis with respect to a direction of forward movement of the vehicle.The locking system in the folded position is therefore particularly advantageous for preventing the signal structure from being lifted unexpectedly by aerodynamic forces, and allows for such an installation of the device, which can for example be installed at the rear end of a roof panel, an installation which promotes the visibility of the signal structure in the upright position. Brief description of the drawings

[0023] [Fig-1]: [Fig.1] is a schematic side view of a motor vehicle equipped of a visual signaling device, the signaling structure being in an upright position.

[0024] [Fig.2]: The [Fig.2] is a perspective view of a first example of a visual signaling device, the signaling structure being in a folded position.

[0025] [Fig.3] The [Fig.3] is an exploded perspective view of the first example of a visual signaling device from the [Fig.2].

[0026] [Fig.4]: The [Fig.4] is an exploded perspective view of a second example of a visual signaling device, comprising a base with integrated fairing.

[0027] [Fig.5]: The [Fig.5] is a partial perspective view, illustrating an example of a passive lock in a signal structure locking configuration in the folded position.

[0028] [Fig.6]: The [Fig.6] is a partial perspective view, illustrating the passive lock of the [Fig.5] in an unlocked configuration of the signaling structure.

[0029] [Fig.7]: The [Fig.7] is a schematic side view of some components of a visual signaling device, with the signaling structure in the folded position.

[0030] [Fig.8]: [Fig.8] is analogous to that of [Fig.7], the signaling structure being in an upright position.

[0031] [Fig.9]: The [Fig.9] is analogous to that of the [Fig.7], the signaling structure being in a starting unlock position during a deployment operation of the signaling structure.

[0032] [Fig. 10]: The [Fig. 10] is analogous to that of the [Fig.7], the signaling structure being in a position of release of the passive lock during a deployment operation of the signaling structure.

[0033] [Fig. 11]: [Fig. 11] is analogous to that of [Fig. 7], the signaling structure being illustrated in its righting movement during a deployment operation of the signaling structure.

[0034] [Fig. 12]: The [Fig. 12] is analogous to that of the [Fig.7], the signaling structure being in a position of erasure of the passive lock during a folding operation of the signaling structure. Detailed description

[0035] Figure 1 [Fig. 1] illustrates a motor vehicle 10 equipped with a visual signaling device 12 comprising a signaling structure 14 which is shown in this figure in an upright position, which ensures maximum visibility from the surroundings of the vehicle 10, but which can be brought, by a folding operation, into a folded position, in which the bulk of the device 12 is minimal outside the outer envelope of the vehicle. It is understood that the folded-down position reduces the risk of the signaling device 12 striking an object outside the vehicle 10, particularly when the vehicle 10 is moving. In the upright position, the signaling structure 14 extends in a plane that is perpendicular to the direction of travel X of the vehicle, generally perpendicular to a body panel of the vehicle on which the signaling device is mounted. In the example, the signaling device 12 is mounted on a roof panel 16 of the vehicle 10, which is, for example, a utility vehicle, such as a truck or van. However, the signaling device 12 could be mounted on another body panel of the vehicle 10, for example, a side panel 18.Preferably, the visual signaling device 12 is arranged on the vehicle 10 in such a way that, in the folded-down position of the signaling structure 14, the latter extends in a plane which is parallel to the direction of travel X of the vehicle 10, generally therefore parallel to the body panel 16 of the vehicle on which the signaling device 12 is mounted.

[0036] The signaling structure 14 includes at least one visual signaling means. Generally, the visual signaling means includes at least one signpost 13 and / or at least one light source 15. In the illustrated example, the structure includes two signposts 13 and several light sources 15. The two signposts 13 extend in a plane that defines the overall plane of the signaling structure, and they are arranged back to back so that, at least in the upright position of the signaling structure 14, one is visible from one side of the overall plane, and the other is visible from the other side of the overall plane. In the example, the two signposts 13 are spaced apart and define a thickness of the signaling structure 14 in a direction perpendicular to the overall plane.One or both of the two signs 13 may be transparent or translucent, and the sign structure may include an internal light source (not visible in the figures) visible from outside the structure through the transparent or translucent sign(s). The signs 13 advantageously bear a pictogram and / or a printed message. The signs 13 may have portions coated with a reflective material capable of reflecting light from outside the sign structure 14. In the example, the sign structure is a flat triangular shape, but other geometries are possible. In this case, the signs 13 are, for example, triangular in shape, such as the same size as the sign structure. The light source(s) 15 may include a point light source, for example, an intermittent flashing light.In the example, three point light sources 15 are each arranged at one of the vertices of the triangular shape of the signaling structure 14.

[0037] According to another example, not illustrated, the signaling structure could consist of a mast supporting a simple light source. According to another example, the signaling structure may include or be made up of one or more multi-point variable message signs, or even one or more illuminated display screens.

[0038] Generally, between its upright and folded positions, the signal structure 14 undergoes a rotational movement about a folding axis Al. In the example described below, this rotational movement is a pure rotational movement about a folding axis Al. However, the signal structure 14 can be mounted on a folding mechanism with a more complex geometry, which generates a more complex movement of the signal structure 14 between its upright and folded positions. However, such a complex movement can generally be decomposed into simple virtual movements, including a rotational movement about a signal axis Al, which can be a virtual axis. For example, the folding structure 14 can be mounted on a folding mechanism that generates a movement combining a rotation and a translation of the signal structure 14 between its upright and folded positions.

[0039] In the illustrated example, the visual signaling device 12 includes a base 20. Preferably, this base 20 is considered to be stationary with respect to the movement of the signaling structure 14 between its upright and folded positions. The base 20 may be composed of one or more parts, as detailed below.

[0040] In the example that will be described below, the base 20 is an element attached to the vehicle, for example an element, in one or more parts, which is fixed to the vehicle, for example to a body panel of the vehicle or to a structural element of the vehicle, for example a roll bar, a superstructure, etc. However, all or part of the base could be formed by one or more elements of the vehicle, for example from a body panel of the vehicle or a structural element of the vehicle, such as a roll bar, a superstructure, etc.

[0041] The base 20 can be mounted on the vehicle 10 in a removable manner, for example by screws, bolts, etc..., or non-removable, for example by welding, gluing, riveting, etc.... The base 20, possibly mounted on the vehicle by means of quick removal, for example quarter-turn fixing, bayonet fitting, etc..., possibly means of removal without tools.

[0042] In the example of Figures 2 and 3, the base 20 comprises an open box 22 and delimits an open housing 24 which has overall dimensions smaller than those of the signaling structure 14. In the example of [Fig. 4], the base 20 comprises an open box 22 and delimits an open housing 24 which has overall dimensions slightly larger than those of the signaling structure 14 such that that, in the folded position, the signaling structure is partially or totally contained within the open housing 24 delimited by the base 20. In both examples, the housing 22 has a bottom wall 26 extending in a plane. Preferably, the bottom wall 26 forms the interface between the base 26 and the vehicle, for example, with the vehicle body panel on which the device 12 is mounted. Similarly, in the illustrated example, the housing 22 has side walls 28 that are generally oriented perpendicular to the bottom wall 26. The side walls extend, relative to the plane of the bottom wall 26, along all or part of a perimeter of the housing 22. The side walls 28 may have different and / or variable heights along the perimeter of the housing. The bottom wall 26 and the side walls 28 define the open housing 24 of the box 22, this housing being open at least towards the side opposite the bottom wall.

[0043] The base 20, for example, may be made entirely or partially of folded and / or welded metal sheets. However, the base 20 may also be made entirely or partially by molding. For example, it may be made entirely or partially by molding in polymer material, possibly reinforced with reinforcing particles or fibers. The base may, for example, comprise a metal frame, in one or more pieces, and a body made of polymer material, in one or more pieces.

[0044] In the example of [Fig. 4], the base 20 forms a fairing for the signal structure 14 when the latter is in the folded position. Indeed, in this folded position, the signal structure 14 is received largely or entirely within the open housing 24 delimited by the box 22, and the side walls 28 thus form a fairing limiting the wind resistance of the signal structure 14 in the folded position. The geometry of the side walls 28 can be optimized, for example in height and / or inclination relative to the bottom wall 26, to obtain the desired fairing effect.

[0045] The movement of the signaling structure 14 between its folded and upright positions, and in particular its deployment from its folded to its upright position, is actuated by a motorized actuator 30, which may, for example, be an electric, electromagnetic, pneumatic, hydraulic, etc. actuator. Preferably, such an actuator 30 is designed to be remotely controlled by an operator, for example from inside the vehicle. This allows, in particular, the placement of the signaling device 12 in a location that is not easily accessible to the operator, and / or allows the deployment of the signaling structure 14 without leaving the vehicle, thus ensuring the operator's safety. In the examples, the actuator 30 is arranged in the open housing 24 of the base 22, for example, fixed to the back wall 26.In the examples, the actuator 30 is a linear cylinder, for example an electric linear cylinder, comprising a cylinder body 32, which is preferably fixed. on the base 20 by an articulation of axis A2, and a jack rod 34 which is mobile in translation along its axis A3.

[0046] The signaling device 12 comprises a movable chassis 36 which is movablely mounted on the base 20 with the possibility of pivoting around the folding axis Al, between a service position and a folding position, more particularly visible respectively in figures 7 and 8. In the example, the movable chassis 36 is pivotally mounted on the base 20 by an articulation around the folding axis Al between its service position and its folding position. In the example, the folding axis Al is fixed relative to the base 20. In the example of [Fig.3], the pivoting articulation of the mobile chassis 36 is for example made by two screws 38, each having as its axis the folding axis Al, each being received both in a pivot hole 40 of one of two opposing lateral walls 28 of the base 20, and in a pivot hole 42 formed in one of two opposing lateral cheeks 44 belonging to the mobile chassis 36.Alternatively, but not shown, the base may include a dedicated mounting plate for the folding mechanism.

[0047] Between the service position and the folded position, the movable frame 36 pivots through an angle which is, for example, between 70 and 110 degrees, preferably between 80 and 100 degrees, and more preferably 90 degrees. For this purpose, the cylinder rod 34 is connected to the movable frame 36 by a joint with axis A4, which is positioned at a distance from the axis Al such that the translational movement of the cylinder rod 34 along its axis A3 results in a rotation of the movable frame 36 around the folding axis Al. Preferably, the axes A2 and A4 of the articulation of the linear cylinder 30 on, respectively, the base 20 and the movable frame 36, are parallel to the folding axis Al, and the axis A3 of the cylinder rod 34 is preferably perpendicular to the folding axis Al.

[0048] In variants mentioned above, in which a more complex movement of the signaling structure 14 is provided between its upright and folded positions, the mobile chassis is preferably animated by such a complex movement, which can generally be decomposed into simple virtual movements, including a rotational movement around a folding axis Al, which can in this case be a virtual axis.

[0049] It should be noted that other actuation mechanisms can be provided for moving the movable chassis 36 between its service and folding positions. For example, in the case of a purely rotary movement of the movable chassis 36, such as that in the examples, an actuation mechanism may include, as a motorized actuator, a rotary electric motor which may, for example, be arranged coaxially with the folding axis A1 or offset from it, and which may act on the movable chassis either directly or via a transmission, for example a gear transmission, in particular a gear reducer.

[0050] Furthermore, the visual signaling device 12 includes a retracting system for the signaling structure 14, particularly when it is in the raised position. This allows the structure to retract in the event of contact or impact with an element external to the vehicle 10, especially when the vehicle is moving with the signaling structure in the raised position. The retracting system is a passive system, without a motorized actuator. The retracting system allows the signaling structure to leave its raised position, at least temporarily, in the event of contact with an external object. In the examples, the retracting system allows the signaling structure to leave its raised position, at least temporarily, in the event of contact with an external object, moving towards a retracted position that may be close to its folded position.

[0051] For this purpose, the signaling structure 14 is articulated on the mobile chassis 36 by at least one first retracting articulation 46 around a first retracting axis A5, parallel to the folding axis Al and distinct from the folding axis Al, the signaling structure 14 being mobile relative to the mobile chassis 36 in a first retracting direction in rotation around the first retracting axis A5, from a neutral position of the signaling structure 14 relative to the mobile chassis 36. In the illustrated example, the neutral position is that shown in Figures 7 and 8.

[0052] When in its neutral position relative to the mobile chassis 36, the signaling structure 14 occupies its upright position relative to the base 20 when the mobile chassis 36 is in the service position, as illustrated in [Fig.8], and it occupies its folded position relative to the base 20 when the mobile chassis 36 is in the folded position, as illustrated in [Fig.7].

[0053] It is noted that the first retraction direction of the signaling structure 16, a direction permitted by the retraction joint 46 rotating about the first retraction axis A5, is a rotation in the opposite direction to the pivoting movement of the mobile chassis 36 from its folded position to its service position, around the folding axis Al, when the two axes Al and A5 are viewed in the same direction. Consequently, the first retraction direction of the signaling structure 16, a direction permitted by the retraction joint 46 rotating about the first retraction axis A5, is a rotation in the same direction as the pivoting movement of the mobile chassis 36 from its service position to its folded position, around the folding axis Al, when the two axes Al and A5 are viewed in the same direction.In the figures, particularly Figures 7 and 8, the direction of rotation of the pivoting movement of the mobile chassis 36 from its folded position to its . The service position is a clockwise rotation around the folding axis A1, while the first retraction direction of the signal structure 14, which is permitted by the retraction joint 46, is a counterclockwise rotation around the first retraction axis A5. Thus, the first retraction direction of the signal structure 16, which is permitted by the retraction joint 46 rotating around the first retraction axis A5, allows the signal structure to move to a retracted position that is close to its folded position. Upon contact with an external object, the amount of angular rotation of the retraction around the axis A5 will, of course, depend on the position and size of the external object.

[0054] It could be envisaged that the signaling structure 14 could only pivot relative to the mobile chassis 36 in the said first retraction direction, rotating around the single first retraction axis A5. Alternatively, it can be envisaged that the retraction joint 46 also allows, from the neutral position, a rotation of the signaling structure 14 in a second retraction direction, rotating in the opposite direction to the said first retraction direction, around the same first retraction axis A5. In the illustrated example, it is provided, optionally but advantageously, that the signaling structure is connected to the mobile chassis 36 by a retraction joint comprising a double hinge.The double hinge thus comprises a first retractable hinge 46, which forms the retractable joint around the first retractable axis A5, and, in addition, a second retractable hinge 48 around a second retractable axis A6, parallel to the folding axis A1 and distinct from the folding axis A1 and the first retractable axis A5. The second retractable hinge 48 allows the signaling structure 14 to rotate in a second retractable direction, opposite to the first retractable direction, around the second retractable axis A6. The double hinge of the illustrated embodiment is therefore similar to the double hinges of saloon doors. The presence of two retractable directions is advantageous for better protecting the signaling device in both possible directions of forward and reverse movement of the vehicle 10.

[0055] In this example, each hinge comprises a cylindrical body rotatably mounted on a shaft. However, the retracting joint may be provided for as consisting of at least one deformable hinge, where the articulation between the signaling structure 14 and the mobile chassis 36 results from an elastic deformation of the deformable hinge. Such a deformable hinge may, for example, comprise one or more connecting blocks made of elastomeric material or composite material, interposed between the signaling structure 14 and the mobile chassis 36, or may take the form of an elastic blade between the signaling structure 14 and the mobile chassis. 36, or in the form of one or more helical wire springs interposed between the signaling structure 14 and the mobile chassis 36, or in the form of a combination of such elements.

[0056] The signaling device 12 also includes means for returning the signaling structure 14 to its neutral position relative to the movable chassis 36. These means may, for example, include a spring, such as a helical wire spring or an elastic leaf, at the retraction hinge, and / or one or more springs between the signaling structure 14 and the movable chassis 36. Alternatively or in addition, the return means may include a counterweight. If there are two retraction directions, return means will preferably be provided in both opposite directions to the neutral position; these return means may be as defined above.

[0057] In all cases, the retraction system allows the signaling structure 14 to retract in the event of contact with an external object, without movement of the mobile chassis 36, and therefore without control of the motorized actuator 30, and limiting the transfer of excessive forces to the base 20 and to the vehicle 10.

[0058] According to a particularly advantageous aspect, the visual signaling device 12 includes a locking 50 for locking the signaling structure 14 in the folded position relative to the base 20, which allows it to be maintained in this position despite the shocks, vibrations, and aerodynamic forces that may be applied to the device when the vehicle is moving.

[0059] Preferably, this lock 50 is a passive lock, in the sense that it does not have a dedicated motorized means for either locking or unlocking. The absence of a motorized means considerably simplifies the lock 50, and consequently simplifies the visual signaling device 12 and its installation on a motor vehicle 10. Indeed, this eliminates the need to equip the lock 50 with a dedicated actuator, and it eliminates the need to provide the lock with a power supply (for example, electrical, hydraulic, or pneumatic power), and it eliminates the need to provide the lock with a control line for locking and / or unlocking, for example, electrical or computer-based.

[0060] Generally, it will be seen that the passive locking latch 50 comprises a locking element 52 attached to the base and a locking element 54 attached to the signaling structure 14. In the example, the two locking elements 52, 54 are, in order to ensure in particular the locking function, movable relative to each other along a relative clearing direction DI. As will be seen subsequently, this relative movement is a passive movement, not requiring a dedicated motorized actuator. Generally, the two locking elements 52, 54 are movable, relative to each other along the relative clearing direction Dl, between a position relative locking, which in the example is illustrated in [Fig.7], and a relative erasure position which in the example is illustrated in [Fig. 12].

[0061] In their relative locking position, the two locking elements 52, 54 lock the rotation of the signal structure 14 in the folded position around the folding axis Al, by butting the two locking elements 52, 54 together at a locking point P along a locking direction D2 which, at the locking point P, is tangential to the pivoting movement around the folding axis Al, and which is perpendicular to the relative retraction direction D1. The locking direction is the principal direction of the forces that would be mutually applied by the two locking elements 52, 54 to each other at their point of contact P, in the event of an attempt to force the passive lock to allow rotation of the signal structure towards its upright position.

[0062] In their relative retraction position, illustrated in [Fig. 12], the two locking elements 52, 54 allow the signaling structure 14 to rotate around the folding axis Al.

[0063] Since the lock 50 is a passive lock, it preferably includes return means, for example elastic return means, which return the locking element 52 linked to the base 20 and the locking element 54 linked to the signaling structure 14 to their relative locking position, according to the direction of erasure.

[0064] In the embodiments illustrated in the figures, one of the locking elements is elastic, or at least movable against an elastic element, while the other element is rigid. It could be envisaged that both locking elements, the one attached to the base 20 and the one attached to the signaling structure 14, are elastic, or at least movable against an elastic element.

[0065] As can be seen more particularly in Figures 5 and 6, one of the locking elements is a stopping surface 54 carried by a rigid beak 56, and the other locking element is a stopping edge 52 carried by an elastic blade 58, the elastic blade 58 forming, by its elasticity, the means of returning the two locking elements 52, 54 to their relative locking position

[0066] In the examples, the rigid locking element is linked to the signaling structure, while the elastic locking element, or at least the element that is movable against an elastic element, is linked to the base. However, the reverse configuration is also possible.

[0067] The passive lock 50 includes a one-to-one clearing ramp 60 which forces the two locking elements 52, 54 to move towards their clearing position in the clearing direction, against the return means, when the signaling structure 14 moves towards its folded position, this only in a movement of the signaling structure 14 towards its folded position. When the signaling structure As the signaling structure 14 moves towards its folded position during its movement around the folding axis Al, the two locking elements 52, 54 also have a relative movement due to the relative movement of the components to which they are linked; therefore, they too have this relative pivoting movement around the folding axis Al. The two locking elements 52, 54 are positioned, respectively, on the base 20 and on the signaling structure 14, such that, when the signaling structure 14 moves towards its folded position, they come into contact with each other with the interposition of the erasure ramp 60. The erasure ramp 60 is arranged so as to generate, from the folding movement, the relative erasure movement of the two locking elements 52, 54 towards their relative erasure position along the erasure direction Dl, as illustrated in [Fig. 12].When the signaling structure 14 reaches its folded position, the clearing ramp 60 becomes inoperative and allows the two locking elements 52, 54 to return to their relative locking position according to the clearing direction D2, under the effect of the return means.

[0068] In the examples described, the erasure ramp 60 is linked to only one of the locking elements, namely the locking element 54 linked to the signaling structure 14, which in this example is a rigid locking element. Conversely, the other locking element, namely the locking element 52 linked to the base 20, which in this example is an elastic locking element or at least a movable element against an elastic element, is not linked to an erasure ramp, but is instead stressed by the single erasure ramp 60. Alternatively, it could be provided that the erasure ramp is linked only to the elastic locking element or at least a movable element against an elastic element, and / or that the erasure ramp is linked only to the locking element 52 linked to the base 20.According to yet another variant, the passive lock 40 could comprise two release ramps, one linked to one of the two locking elements and the other to the other locking element. In this case, the two ramps can interact by coming into contact with each other, or they can act separately, in parallel with each other, or they can act sequentially. Preferably, the release ramp 60 is rigidly linked to the corresponding locking element, i.e., without any possibility of movement relative to this locking element, which, in the example, is the stopping surface 54 of the rigid beak 56.

[0069] In the embodiments, the locking element 52 linked to the base 20 is carried by the elastic blade 58. The elastic blade 58 is fixed to the base 20, for example by a base 62 which is located at a proximal end of the elastic blade and which is fixed to the bottom wall 26 of the box 22, and the elastic blade 58 is extended from this proximal end to an opposite, distal, perpendicular free end. lateral to the plane of the bottom wall 26, and therefore perpendicular to the general plane of the signaling structure 14 in the folded position, parallel to the locking direction D2. The elastic blade is elastically deformable along the erasure direction D1, perpendicular to its elongation direction, therefore perpendicular to the locking direction D2. Near its distal end, the elastic blade has a window 64 configured to receive the rigid beak 56 and having a distal edge 52, perpendicular to the locking direction D2, the distal edge forming the locking element 52 linked to the base 20.

[0070] In the embodiment examples, the locking element 54 linked to the signaling structure 14 is carried by the rigid beak 56. The rigid beak 56 is arranged on the signaling structure 14 at one end of the signaling structure 14 which is opposite the retracting hinge 46 in a direction perpendicular to the folding axis AL. Of course, the locking element 52 linked to the base 20, therefore also, in the example, the elastic blade 58, is arranged accordingly on the base 20. Thus, the locking point P of the passive lock 10 is located at a distance from the folding axis Al and the first retracting axis A5.

[0071] In the illustrated example of a triangular signaling structure 14 connected to the retracting hinge 46 at one of the triangle's base sides, the rigid beak 56 is preferably arranged at or near a vertex of the triangle opposite the base side. The rigid beak 56 extends outwards in a direction perpendicular to the folding axis AL. The rigid beak 56 is fixed relative to the signaling structure 14.

[0072] The rigid beak 56 has a stopping surface which forms the locking element 54 linked to the signaling structure 14, which is perpendicular to the locking direction D2, and which, when the rigid beak 56 is received in the window 64, is turned opposite the distal edge forming the locking element 52 linked to the base 20. In the example, the stopping surface which forms the locking element 54 linked to the signaling structure 14 is turned opposite the base 20.

[0073] The rigid beak 56 also has the erasure ramp 60 which, when the signaling structure 14 moves towards its folded position, is inclined relative to the locking direction D2 and relative to the erasure direction D1, being oriented more towards the base 20 than in the opposite direction. Furthermore, the erasure ramp 60 is positioned on the rigid beak 56, relative to the stopping surface that forms the locking element 54 attached to the signaling structure 14, on the side of the base 20. Thus, as can be seen in [Fig. 12], when the signaling structure 14 moves from the upright position close to its folded position, the erasure ramp 60 of the rigid beak 56 first comes into contact with the free end of the elastic blade 58 and, by its geometry, causes the elastic blade 58 to retract along the direction of erasure by bending of the elastic blade. When the signaling structure 58 reaches its folded position, the rigid beak 56 is opposite the window 54, which allows the elastic blade 58 to return to its undeformed configuration, the rigid beak 56 then being received in the window 64. In this position, the distal edge 52 of the window 64 of the elastic blade 58 cooperates in a buttress against the stopping surface 54 of the rigid beak, according to the locking direction 52, ensuring the locking of the signaling structure in its folded position.

[0074] The elastic blade 58 has a planar geometry perpendicular to the relative direction of erasure DI with a small thickness along the direction of erasure Dl, to bend easily under the effect of the erasure ramp 60 without generating significant effort in the folding mechanism or in the actuator 30.

[0075] The passive lock 50 is irreversible in rotation about the folding axis Al, in the sense that, due to the locking by the passive lock 50, the signaling structure 14 cannot, from its folded position in which it is locked by the passive lock 50, be moved in a simple rotation about the folding axis Al towards its upright position. The passive lock 20 does not include a release mechanism allowing it to be unlocked by a simple rotation of the signaling structure 14, about the folding axis Al, from its folded position to its upright position.

[0076] In the illustrated example, the relative retraction direction Dl is perpendicular to the folding axis AL. Alternatively, the relative retraction direction Dl could be parallel to the folding axis Al or extend in any other direction, while remaining perpendicular to the locking direction D2. For example, it could be perpendicular to one of the sides of the triangle other than its base side by which it is connected to the retraction joint 46. The signaling device could thus comprise two passive locks, for example arranged symmetrically on each side of the signaling structure with respect to the median plane of the signaling structure perpendicular to the folding axis Al, for example, one lock arranged on each of the sides of the triangular shape other than the base side.

[0077] We will continue to describe the unlocking of the signaling structure 14, from its folded position in which it is locked by the passive lock 50, this unlocking allowing, in a deployment operation of the signaling structure 14, to straighten the signaling structure without specific action on the passive lock 50. The unlocking of the signaling structure 14 from its folded position is obtained by commanding the motorized actuator 30 to cause a pivoting movement of the mobile chassis 36 from its folded position to its service position.

[0078] In the folded position of [Fig. 7], the rigid beak 56 is received in the window 64 and is thus prevented from rotating about the folding axis Al by the distal edge 52 of the window. From this position, the motorized actuator 30 is controlled so that it causes the movable frame 36 to pivot about the folding axis Al. It can be seen in [Fig. 7] that, in a plane perpendicular to the folding axis Al and passing through the locking point P where contact is made between the locking elements 52, 54 attached respectively to the base 20 and the signaling structure 14, when the movable frame 36 is in the service position, the first retraction axis A5 is arranged between the locking point P and the folding axis Al.

[0079] Consequently, when the mobile chassis 36 pivots around the folding axis Al, controlled by the motorized actuator 30, the first retraction axis A5, which represents the first retraction hinge 46, also pivots around the folding axis Al in a direction that tends to move it away from the locking point P, as can be seen in Figures 9 and 10. The signaling structure 14, still locked by the passive lock 50, cannot pivot around the folding axis Al. Due to the movement of the mobile chassis 36 and the locking of the signaling structure 14, the retraction hinge 46 is stressed and allows the signaling structure 14 to rotate relative to the mobile chassis 36 in the first retraction direction, rotating around the first retraction axis A5.This relative rotation between the signaling structure 14 and the mobile chassis 36 prevents the assembly formed by the signaling structure 14 and the mobile chassis 36 from being blocked by the lock 50. This relative rotation between the signaling structure 14 and the mobile chassis 36 is against the return means of the retracting joint.

[0080] Since the pivoting movement of the movable chassis 36 moves the first retracting axis A5 away from the locking point P, it carries with it the signaling structure 14, which therefore tends to move in a direction that is substantially radial with respect to the folding axis Al, according to a disengagement movement D3 relative to the base 20. It is noted that this disengagement movement D3 of the signaling structure 14 is analogous to that of a connecting rod in a connecting rod / crank system, the crank being the movable chassis 36. This disengagement movement D3 is generally perpendicular to the folding axis Al. This disengagement movement D3 is also generally perpendicular to the locking direction D2 between the two locking elements 52, 54 of the passive lock.In this way, the passive lock 50 opposes a rotational movement of the signaling structure 14 around the folding axis Al but does not oppose this release movement D3. The two locking elements 52, 54 of the passive lock 50, linked respectively to the base 20 and . to the signaling structure 14, are configured so as not to oppose this clearance movement D3.

[0081] The amplitude of the clearance displacement of the signaling structure 14 relative to the base, along the radial direction relative to the folding axis Al, is directly related, on the one hand, to the distance between the folding axis Al and the first retraction axis A5, and on the other hand, to the angle of displacement of the movable chassis 36 around the folding axis Al, which, as we have seen, is for example between 70 and 110 degrees, preferably between 80 and 100 degrees, and more preferably equal to 90 degrees. Thus, the signaling structure 14 moves relative to the base 20, along the clearance direction D3, by a clearance distance sufficient to disengage the locking element 54 attached to the signaling structure 14 from the locking element 52 attached to the base 20.In other words, the rigid beak 56 comes out of the window 64 of the elastic blade 58, so that contact is lost between the stopping surface 54 of the rigid beak 56 and the distal edge 52 of the window 64 of the elastic blade 58. As a result, the lock 50 no longer retains the signaling structure 14.

[0082] From this point, as schematically represented in [Fig. 11], the return means of the retracting hinge tend to bring the signaling structure back into its neutral position relative to the mobile chassis 36. Thus, the signaling structure tends to catch up with the mobile chassis 36 as it pivots around the folding axis Al. During this catch-up, the mobile chassis 36 can continue its pivoting around the folding axis Al until it reaches its service position illustrated in [Fig. 8]. Once the mobile chassis 36 has reached its service position and this catch-up of the mobile chassis 36 by the signaling structure 14 has been completed, the latter is in its upright position illustrated in [Fig. 8].

[0083] It is therefore understood that, for unlocking the signaling structure 14, the passive lock is not activated. In the example, the release direction D3 of the signaling structure relative to the base 20 is parallel to the relative retraction direction DI of the two locking elements 52, 54 of the passive lock 50, but this could be otherwise, for example, due to a different orientation of the relative retraction direction D1, as mentioned above. The visual signaling device 12 therefore comprises a single motorized actuator which is the one that ensures the movement of the mobile chassis between its service and folding positions, thus allowing for a simple and economical implementation of the device 12.

[0084] By having a visual signaling device 12 comprising a locking mechanism for the folded-down position of the signaling structure 14 relative to the base 20, the device 12 can be installed without concern regarding its orientation on the vehicle 10 relative to the direction of forward movement of the vehicle, and in particular without concern regarding its orientation relative to the aerodynamic forces likely to The locking mechanism 50 applies, during vehicle movement, to the signaling structure 14 when it is in the folded position. Thus, as illustrated in [Fig. 1], the visual signaling device 12 can be installed on the vehicle 10 such that, in the folded position, the signaling structure 14 is located in front of the folding axis A1 relative to the direction of travel of the vehicle. Indeed, the locking mechanism 50 secures the signaling structure in the folded position, even if aerodynamic forces tend to lift it towards its upright position.When locked in this way, even when installed towards the front relative to its folding axis, the signaling structure in the folded position is not at risk of rising up unintentionally, which could have serious consequences, such as breakage of the device, damage to the vehicle, or even the tearing away of all or part of the device with projection of elements in the vicinity of the vehicle, compromising the safety of other road users.

Claims

1. Demands Visual signaling device (12) comprising: • a base (20), • a mobile chassis (30) which is mounted movably on the base (20) with the possibility of pivoting around a folding axis (Al) between a service position and a folding position, • a motorized actuator (30) for moving the mobile chassis (36), capable of moving the mobile chassis (36) from its service position to its folded position, and vice versa, • a signaling structure (14) which is articulated on the mobile chassis by at least one retracting joint (46) about at least one first retracting axis (A5) parallel to the folding axis (Al1) and distinct from the folding axis (Al1), the signaling structure (14) comprising at least one visual signaling means (13, 15) and being movable relative to the mobile chassis (36) in a first retracting direction in rotation about the first retracting axis (A5), from a neutral position of the signaling structure relative to the mobile chassis, and the signaling structure (14) occupying, relative to the base (20), when it is in its neutral position relative to the mobile chassis (36), an upright position when the mobile chassis (36) is in the service position, and a folded position when the mobile chassis (36) is in the folded position, and • means for returning the signaling structure (14) to its neutral position relative to the mobile chassis (36), characterized in that • The device includes a passive lock (50) for locking the signaling structure (14) in the folded position relative to the base (20), the passive lock (50) comprising a locking element (52) linked to the base (20) and a locking element (54) linked to the signaling structure (14) which, in a relative locked position, lock the rotation of the signaling structure (14) in the position folded down around the folding axis (Al), by butting the two locking elements (52, 54) at a locking point (P) along a locking direction (D2) which, at the locking point (P), is tangential to a pivot around the folding axis (Al), • in that the locking point (P) of the passive lock is disposed at a distance from the folding axis (Al) and the first retraction axis (A5), • and in that the unlocking of the signaling structure (14) from its folded position is obtained by commanding the motorized actuator (30) to cause a pivoting movement of the mobile chassis (36), from its folded position to its service position, the retraction hinge (46) allowing a rotation of the signaling structure (14) relative to the mobile chassis (36) in the first retraction direction in rotation around the first retraction axis (A5),and the signaling structure (14) moving relative to the base (20), along a clearance direction (D3) perpendicular to the locking direction (D2), by a clearance distance allowing the locking element (54) attached to the signaling structure (14) to be released from the locking element (52) attached to the base (20).

2. Visual signaling device according to claim 1, characterized in that the locking element (52) linked to the base (20) and the locking element (54) linked to the signaling structure (54) are movable relative to each other, along a relative erasure direction (D1) perpendicular to the locking direction (D2), between the relative locking position and a relative erasure position in which they allow the signaling structure (14) to rotate around the folding axis (Al).

3. Visual signaling device according to claim 2, characterized in that the passive lock (50) includes return means (58) which return the locking element (52) linked to the base (20) and the locking element (54) linked to the signaling structure (14) to their relative locking position, according to the erasure direction (Dl).

4. Visual signaling device according to any one of claims 2 or 3, characterized in that the passive lock has a univocal clearing ramp (60) which forces the passage of the two locking elements (52, 54) towards their clearing position along the clearing direction (Dl), against the return means (58), when the signaling structure (14) arrives at its folded position, only in a movement of the signaling structure (14) towards its folded position.

5. Visual signaling device according to any one of the preceding claims, characterized in that, in a pivoting of the movable chassis (36) around the folding axis (Al), from its folding position to its service position, the first retracting axis (A5) moves away from the locking point (P).

6. Visual signaling device according to any one of the preceding claims, characterized in that the first rotational retraction direction of the signaling structure (14) around the first retraction axis (A5) is in the opposite direction of rotation to the direction of rotation of the pivoting movement of the mobile chassis (36), from its folded position to its service position, around the folding axis (Al).

7. Visual signaling device according to any one of the preceding claims, characterized in that at least one (52) of the locking elements is arranged at a free end of an elastic blade (58).

8. Visual signaling device according to any one of the preceding claims, characterized in that at least (54, 56) one of the locking elements is rigid.

9. Visual signaling device according to any one of the preceding claims, characterized in that the locking element (54) linked to the signaling structure (16) is arranged at one end of the signaling structure (14) which is opposite the retracting joint (46) in a direction perpendicular to the folding axis (Al).

10. Visual signaling device according to any one of the preceding claims, characterized in that the base (20) of the device (12) comprises a fairing (22, 28) for the signaling structure in the folded position.

11. A visual signaling device according to any one of the preceding claims, characterized in that the signaling structure (14) includes a sign panel (13) and / or a light source (15).

12. Motor vehicle (10) comprising a visual signaling device (12) according to any one of the preceding claims, characterized in that the visual signaling device (12) is arranged on the vehicle such that, in the folded position of the signaling structure (14), an end of the signaling structure which is opposite the retracting joint (46) in a direction perpendicular to the folding axis (Al) is arranged in front of the folding axis (Al) with respect to a forward direction of travel of the vehicle.

Images