Folding visual signaling device and vehicle equipped with such a device

Abstract

The invention proposes a visual signaling device (12) comprising: • a base (20) and a mobile chassis (30), • a signaling structure (14) articulated on the mobile chassis with means for returning it to its neutral position relative to the mobile chassis (36), characterized in that • the device comprises a passive lock (50) for locking the signaling structure (14) in the folded position, • and in that the unlocking of the signaling structure (14) from its folded position is obtained by controlling a motorized actuator (30) to cause a pivoting movement of the mobile chassis (36), from a folded position to a service position, making it possible to release a locking element (54) linked to the signaling structure (14) from a locking element (52) linked 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 to a motor vehicle, outside the latter. Technical background

[0002] Foldable visual signaling devices are known which are intended to be fixed to a motor vehicle and which comprise a signaling structure which is movable between an upright position, in which it is easily visible from the environment of the vehicle, and a folded position, in which it has a reduced footprint compared to the outer envelope of the motor vehicle. Typically, the signaling structure extends, in the upright position, in a plane which is perpendicular to the forward movement of the vehicle. On the contrary, in the folded position, the signaling structure extends in a plane which is perpendicular to the forward movement of the vehicle to reduce the footprint of the device compared to the outer envelope of the motor vehicle.

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

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

[0005] A problem to be solved in the context of a visual signaling device is that of maintaining the signaling structure in its folded state. Such maintenance aims to be effective. In the case of a signaling device mounted on a motor vehicle, this maintenance must be effective including with respect to vibrations, jolts and aerodynamic forces likely to be applied to the device when the vehicle is moving, in particular at normal travel speeds on roads and / or motorways. An objective to be achieved in the design of a means of maintaining in the folded position is that it is inexpensive and simple to use. Statement of the invention

[0006] The invention provides a visual signaling device comprising: • a base, • a mobile chassis which is mounted movably on the base with the possibility of pivoting 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 folding position, and vice versa, • a signaling structure which is articulated on the mobile chassis by at least one retraction joint around at least one first retraction 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 retraction direction in rotation around the first retraction 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 mobile chassis.

[0007] The device comprises a passive lock for locking the signaling structure in the folded position relative to the base, the passive lock 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 abutting the two locking elements at a locking point in a locking direction which, at the locking point, is tangential to a pivoting around the folding axis.

[0008] The locking point of the passive lock is arranged at a distance from the folding axis and the first retraction 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 retraction joint allowing rotation of the signaling structure relative to the movable chassis in the first retraction direction in rotation around the first retraction axis, and the signaling structure moving relative to the base, in a release direction perpendicular to the locking direction, by a release 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 makes it possible to obtain locking and unlocking of the structure in the folded position without adding an active element. Such locking, which is beneficial from the point of view of safety of use, is obtained at low cost and has very high reliability.

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

[0012] The locking element linked to the base and the locking element linked to the signaling structure can be movable relative to each other, according to a relative direction of erasure perpendicular to the locking direction, between the relative locking position and a relative position of erasure in which they allow the rotation of the signaling structure around the folding axis. The perpendicularity between the relative direction of erasure and the locking direction makes it possible to guarantee that, whatever the forces which are generated according to the locking direction, they will not have the possibility of causing an unwanted erasure of the locking elements, guaranteeing the locking even under high stresses.

[0013] The passive lock may include return means which return the locking element linked to the base and the locking element linked to the signaling structure to their relative locking position, according to the erasure direction. This reinforces the passive nature of the system, for the benefit of cost, ease of integration, and reliability.

[0014] The passive lock may comprise a unique erasure ramp which forces the two locking elements to move towards their erasure position in the erasure direction, against the return means, when the signaling structure reaches its folded position, only in a movement of the signaling structure towards its folded position. The implementation of such a unique erasure ramp reinforces the passive nature of the system, to the benefit of cost, ease of integration, and reliability.

[0015] The device may be configured such that, in a pivoting of the movable frame about the folding axis, from its folding position to its service position, the first retraction axis moves away from the locking point. Such an arrangement contributes to the use of the pivoting movement of the movable frame to ensure, automatically and passively, unlocking, with a cost minimal.

[0016] The device may be configured such that the first rotational retraction direction of the signaling structure around the first retraction axis is in the opposite direction of rotation to the direction of rotation of the pivoting movement of the mobile chassis, from its folding position to its service position, around the folding axis. These opposite direction 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 provide at low cost an elastic return bringing the two locking elements back into their relative locking position.

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

[0019] The locking element linked to the signaling structure can be arranged at one end of the signaling structure which is opposite the retraction joint in a direction perpendicular to the folding axis. This makes it possible to obtain a significant locking torque by 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 one application, the signaling structure may comprise a sign panel and / or a light source.

[0022] The invention also relates to a motor vehicle comprising a visual signaling device having any one 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, one end of the signaling structure which is opposite the retraction articulation in a direction perpendicular to the folding axis is arranged in front of the folding axis relative to a forward direction of movement of the vehicle.The locking system in the folded position is then particularly advantageous for preventing the signaling structure from being lifted accidentally under the effect of aerodynamic forces, and allows 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 signaling structure in the upright position. Brief description of the drawings

[0023] [Fig-1]: [Fig.l] 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]: [Fig.2] is a perspective view of a first example of a visual signaling device, the signaling structure being in the folded position.

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

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

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

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

[0029] [Fig.7]: [Fig.7] is a schematic side view of certain components of a visual signaling device, the signaling structure being 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]: [Fig.9] is analogous to that of [Fig.7], the signaling structure being in a position of beginning unlocking during a deployment operation of the signaling structure.

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

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

[0034] [Fig. 12]: [Fig. 12] is analogous to that of [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] [Fig.l] illustrates a motor vehicle 10 equipped with a visual signaling device 12 comprising a signaling structure 14 which is illustrated, in this figure, in an upright position, which ensures maximum visibility from the environment of the vehicle 10, but which is capable of being brought, by a folding operation, into a folded position, in which the size of the device 12 is minimal outside the outer envelope of the vehicle. understands that the folded position reduces the risk of the signaling device 12 hitting an object external to the vehicle 10, in particular when the vehicle 10 is moving. In the upright position, the signaling structure 14 extends in a plane which 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 position of the signaling structure 14, the latter extends in a plane which is parallel to the direction of advancement 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 comprises at least one visual signaling means. Generally, the visual signaling means comprises at least one sign panel 13 and / or at least one light source 15. In the illustrated example, the structure comprises two sign panels 13 and several light sources 15. The two sign panels 13 extend in a plane which defines the general 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 general plane, and the other is visible from the other side of the general plane. In the example, the two panels 13 are spaced apart from each other and define a thickness of the signaling structure 14 in a direction perpendicular to the general plane.One or other of the two panels 13, or both, may be transparent or translucent and the signaling structure may comprise an internal light source (not visible in the figures) visible from outside the structure through the transparent or translucent panel(s). The panels 13 advantageously carry a pictogram and / or a printed message. The panels 13 may carry portions coated with a reflective coating, capable of reflecting light coming from outside the signaling structure 14. In the example, the signaling structure is of planar triangular shape, but other geometries are possible. In this case, the signage panels 13 are for example of triangular shape, for example the size of the signaling structure. The light source(s) 15 may comprise a point light source, for example of the intermittent flash type.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 carrying a simple light source. According to another example, the signaling structure may comprise or consist of one or more multi-point light panels with variable message, or even one or more light display screens.

[0038] Generally, between its upright and folded positions, the signaling structure 14 performs a rotational movement about a folding axis A1. In the example which will be described below, this rotational movement is a pure rotational movement about a folding axis A1. However, the signaling structure 14 can be mounted on a folding mechanism with a more complex geometry which generates a more complex movement of the signaling 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 signaling axis A1, which can be a virtual axis. For example, the folding structure 14 can be mounted on a folding mechanism which generates a movement combining a rotation and a translation of the signaling structure 14, between its upright and folded positions.

[0039] In the illustrated example, the visual signaling device 12 comprises a base 20. Preferably, this base 20 is considered to be stationary relative 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 which will be described below, the base 20 is an element added to the vehicle, for example an element, in one or more pieces, which is fixed to the vehicle, for example on a body panel of the vehicle or on 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 among 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-removably, for example by welding, gluing, riveting, etc. The base 20, possibly mounted on the vehicle by quick-disassembly means, for example quarter-turn fixing, bayonet, etc., possibly by means of disassembly 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 total 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 total dimensions slightly greater than those of the signaling structure 14 such that that, in the folded position, the signaling structure is partially or totally received inside the open housing 24 delimited by the base 20. In these two examples, the box 22 comprises a bottom wall 26 which extends in a plane. Preferably, the bottom wall 26 forms the interface of the base 26 with the vehicle, for example with the body panel of the vehicle on which the device 12 is mounted. Similarly, in the illustrated example, the box 22 comprises side walls 28 which have a general orientation 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 box 22. The side walls 28 may have different and / or variable heights along the perimeter of the box. The bottom wall 26 and the side walls 28 delimit 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 made entirely or partly from folded and / or mechanically welded metal sheets. However, the base 20 may be made entirely or partly by molding. It may for example be made entirely or partly by molding from a polymer material, possibly reinforced by reinforcing particles or fibers. The base may comprise for example a metal frame, in one or more pieces, and a body made from a polymer material, in one or more pieces.

[0044] In the example of [Fig.4], the base 20 forms a fairing for the signaling structure 14 when the latter is in the folded position. Indeed, in this folded position, the signaling structure 14 is received largely or entirely in the open housing 24 delimited by the box 22, and the side walls 28 therefore form a fairing limiting the wind resistance of the signaling structure 14 in the folded position. The geometry of the side walls 28 can be optimized, for example in height and / or in 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 position 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 able to be controlled remotely by an operator, for example from inside the vehicle, which in particular allows the placement of the signaling device 12 in a location that is not easily accessible for the operator, and / or allows the deployment of the signaling structure 14 without leaving the vehicle, a guarantee of safety for the operator. In the examples, the actuator 30 is arranged in the open housing 24 of the box 22 of the base 20, for example fixed to the bottom 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 movable in translation along its axis A3.

[0046] The signaling device 12 comprises a mobile chassis 36 which is mounted movably on the base 20 with the possibility of pivoting around the folding axis A1, between a service position and a folding position, more particularly visible respectively in Figures 7 and 8. In the example, the mobile chassis 36 is pivotally mounted on the base 20 by an articulation around the folding axis A1 between its service position and its folding position. In the example, the folding axis A1 is fixed relative to the base 20. In the example of [Fig. 3], the pivoting articulation of the mobile chassis 36 is for example produced by two screws 38, each having as its axis the folding axis A1, each being received both in a pivot orifice 40 of one of two facing side walls 28 of the base 20, and in a pivot orifice 42 formed in one of two facing side cheeks 44 belonging to the mobile chassis 36.Alternatively, not shown, the base may include a base dedicated to the folding joint.

[0047] Between the service position and the folding position, the mobile chassis 36 pivots through an angle which is for example between 70 and 110 degrees, preferably between 80 and 100 degrees, more preferably equal to 90 degrees. For this, the cylinder rod 34 is connected to the mobile chassis 36 by an articulation of axis A4 which is at a distance from the axis A1 so that the translational movement of the cylinder rod 34 along its axis A3 results in a rotation of the mobile chassis 36 around the folding axis A1. Preferably, the axes A2 and A4 of articulation of the linear cylinder 30 on, respectively, the base 20 and the mobile chassis 36, are parallel to the folding axis A1, and the axis A3 of the cylinder rod 34 is preferably perpendicular to the folding axis A1.

[0048] In variants mentioned above, in which a more complex movement of the signaling structure 14 is provided between its raised and folded positions, the mobile chassis is preferably driven by such a complex movement, which can generally be broken down into simple virtual movements, including a rotational movement around a folding axis A1, which can in particular in this case be a virtual axis.

[0049] It will be noted that other actuating mechanisms may be provided for moving the movable frame 36 between its service and folding positions. For example, in the case of a purely rotary movement of the movable frame 36, such as that of the examples, an actuating mechanism may comprise, as a motorized actuator, a rotary electric motor which may for example be arranged coaxially with the folding axis A1 or offset therefrom, and which may act on the movable frame either directly or by a transmission, for example a gear transmission, especially a gear reducer.

[0050] Furthermore, the visual signaling device 12 comprises a system for retracting the signaling structure 14, in particular when it is in the upright position, in order to allow the structure to retract in the event of contact or impact with an element external to the vehicle 10, in particular when the vehicle is moving with the signaling structure in the upright position. The retracting system is a passive system, not comprising a motorized actuator. The retracting system allows the signaling structure to leave at least temporarily its upright position in the event of contact with an external object. In the examples, the retracting system allows the signaling structure to leave at least temporarily its upright position, in the event of contact with an external object, towards a retracted position which may be close to its folded position.

[0051] For this, the signaling structure 14 is articulated on the mobile chassis 36 by at least a first retraction articulation 46 around a first retraction axis A5, parallel to the folding axis A1 and distinct from the folding axis A1, the signaling structure 14 being movable relative to the mobile chassis 36 in a first retraction direction in rotation around the first retraction axis A5, from a neutral position of the signaling structure 14 relative to the mobile chassis 36. In the example illustrated, the neutral position is that shown in Figures 7 and 8.

[0052] When it is 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 direction of retraction of the signaling structure 16, a direction which is permitted by the retraction joint 46 in rotation about the first retraction axis A5, is a rotation in the opposite direction of rotation to the direction of rotation of the pivoting movement of the mobile chassis 36 from its folding position to its service position, about the folding axis A1, when the two axes A1 and A5 are observed in the same direction. Consequently, the first direction of retraction of the signaling structure 16, a direction which is permitted by the retraction joint 46 in rotation about the first retraction axis A5, is a rotation in the same direction of rotation as the direction of rotation of the pivoting movement of the mobile chassis 36 from its service position to its folding position, about the folding axis A1, when the two axes A1 and A5 are observed in the same direction.In the figures, in particular Figures 7 and 8, the direction of rotation of the pivoting movement of the movable frame 36 from its folding position to its . service position is a clockwise rotation about the folding axis A1, while the first direction of retraction of the signaling structure 14, which is permitted by the retraction joint 46, is a counterclockwise rotation about the first retraction axis A5. Thus, the first direction of retraction of the signaling structure 16, which direction is permitted by the retraction joint 46 in rotation about the first retraction axis A5, allows the signaling structure to go to a retracted position which is close to its folded position. Upon contact with an external object, the amount of angular rotation of the retraction about the axis A5 will of course be dependent on the position and size of the external object.

[0054] It could be provided that the signaling structure 14 can pivot relative to the mobile chassis 36 only in said first retraction direction, in rotation around the only first retraction axis A5. Alternatively, it could be provided that the retraction joint 46 also allows, from the neutral position, a rotation of the signaling structure 14 in a second rotational retraction direction, opposite to said first retraction direction, around the same first retraction axis A5. In the example illustrated, 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 retraction hinge 46, which forms the retraction articulation around the first retraction axis A5, and, in addition, a second retraction hinge 48 around a second retraction axis A6, parallel to the folding axis A1 and distinct from the folding axis A1 and the first retraction axis A5. The second retraction hinge 48 allows the rotation of the signaling structure 14 in a second retraction direction, opposite to said first retraction direction, around said second retraction axis A6. The double hinge of the illustrated embodiment is therefore similar to the double hinges of saloon doors. The presence of two retraction directions is advantageous for better protecting the signaling device in the two possible directions of advance and reversal of the vehicle 10.

[0055] In this example, each hinge comprises a cylindrical body rotatably mounted on a shaft. However, it may be provided that the retracting joint is formed 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 of composite material, interposed between the signaling structure 14 and the mobile chassis 36, or in 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 further comprises means for returning the signaling structure 14 to its neutral position relative to the mobile chassis 36. These means may, for example, comprise a spring, for example a helical wire spring or an elastic blade, at the retraction joint, and / or one or more springs between the signaling structure 14 and the mobile chassis 36. Alternatively or in addition, the return means may comprise a counterweight. In the presence of two retraction directions, return means will preferably be provided in the two opposite directions towards the neutral position, these return means possibly being 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 by limiting the transfer of excessive forces towards the base 20 and towards the vehicle 10.

[0058] According to a particularly advantageous aspect, the visual signaling device 12 comprises a lock 50 for locking the signaling structure 14 in the folded position relative to the base 20, which makes it possible to maintain it in this position despite the jolts, vibrations, and aerodynamic forces likely to 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 include dedicated motorized means for ensuring either locking or unlocking. The absence of motorized means makes it possible to considerably simplify the lock 50, and consequently to simplify the visual signaling device 12 and its installation on a motor vehicle 10. Indeed, this eliminates the need to provide the lock 50 with a dedicated actuator, and this eliminates the need to provide the lock with a power supply (for example electrical, hydraulic or pneumatic energy), and eliminates the need to provide the lock with a locking and / or unlocking control line, for example electrical or computer.

[0060] Generally speaking, it will be seen that the passive locking latch 50 comprises a locking element 52 linked to the base and a locking element 54 linked 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 in a relative erasure direction DI. As will be seen subsequently, this relative movement is a passive movement, not requiring a dedicated motorized actuator. Generally speaking, the two locking elements 52, 54 are movable, relative to each other in the relative erasure direction DI, between a position relative locking position, which in the example is illustrated in [Fig.7], and a relative erasing 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 signaling structure 14 in the folded position around the folding axis A1, by stopping the two locking elements 52, 54 at a locking point P in a locking direction D2 which, at the locking point P, is tangential to the pivoting movement around the folding axis A1, and which is perpendicular to the relative retraction direction D1. The locking direction is the main direction of the forces which would be mutually applied by the two locking elements 52, 54 towards each other at their contact point P, in the event of an attempt to force the passive lock to allow rotation of the signaling structure towards its upright position.

[0062] In their relative retracted position, illustrated in [Fig. 12], the two locking elements 52, 54 allow the signaling structure 14 to rotate around the folding axis A1.

[0063] The lock 50 being a passive lock, it preferably comprises 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 erasure direction.

[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 a rigid element. It could be provided that the two locking elements, the one connected to the base 20 and the one connected 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 stop surface 54 carried by a rigid beak 56, and the other locking element is a stop edge 52 carried by an elastic blade 58, the elastic blade 58 forming, by its elasticity, the means for returning the two locking elements 52, 54 into their relative locking position.

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

[0067] The passive lock 50 comprises a unique erasure ramp 60 which forces the two locking elements 52, 54 to move towards their erasure position in the erasure direction, against the return means, when the signaling structure 14 reaches its folded position, this only in a movement of the signaling structure 14 towards its folded position. When the signaling structure lisation 14 arrives towards its folded position in its folding movement around the folding axis A1, the two locking elements 52, 54 also have a relative movement due to the relative movement of the components to which they are connected, therefore they also have this relative pivoting movement around the folding axis A1. The two locking elements 52, 54 are positioned, respectively on the base 20 and on the signaling structure 14, so that, when the signaling structure 14 arrives towards its folded position, they come into contact with each other with the interposition of the erasing ramp 60. The erasing ramp 60 is arranged so as to generate, from the folding movement, the relative erasing movement of the two locking elements 52, 54 towards their relative erasing position according to the erasing direction D1, as illustrated in [Fig.12].When the signaling structure 14 reaches its folded position, the erasing ramp 60 becomes inoperative and allows the two locking elements 52, 54 to return to their relative locking position in the erasing 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, in this case the one 54 linked to the signaling structure 14, which happens to be, in this example, a rigid locking element. Conversely, the other locking element, in this case the locking element 52 linked to the base 20, which happens to be, in this example, an elastic locking element or at least movable against an elastic element, is not linked to an erasure ramp, but is on the contrary 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 movable 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 erasing ramps, one connected to one of the two locking elements and the other to the other of the two locking elements. 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 erasing ramp 60 is rigidly connected to the corresponding locking element, that is to say without the possibility of movement relative to this locking element which, in the example is the stop surface 54 of the rigid beak 56.

[0069] In the exemplary 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 elongated from this proximal end to an opposite, distal, free end, perpendicular to the base 20. broadly 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 in 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 comprising 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 exemplary embodiments, the locking element 54 connected 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 retraction joint 46 in a direction perpendicular to the folding axis AL. Of course, the locking element 52 connected to the base 20, and therefore also, in the example, the elastic blade 58, is arranged correspondingly on the base 20. Thus, the locking point P of the passive lock 10 is arranged at a distance from the folding axis Al and from the first retraction axis A5.

[0071] In the illustrated example of a triangular-shaped signaling structure 14, connected to the retracting joint 46 at a base side of the triangle, the rigid beak 56 is preferably arranged at an apex of the triangle which is opposite the base side of the triangle, or close to it. The rigid beak 56 extends outwardly 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 stop 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 stop surface which forms the locking element 54 linked to the signaling structure 14 is turned away from the base 20.

[0073] The rigid beak 56 also has the erasing ramp 60 which, when the signaling structure 14 reaches its folded position, is inclined relative to the locking direction D2 and relative to the erasing direction D1, being turned more towards the base 20 than away. Furthermore, the erasing ramp 60 is positioned on the rigid beak 56, relative to the stop surface which forms the locking element 54 linked to the signaling structure 14, on the side of the base 20. In this way, as can be seen in [Fig. 12], when the signaling structure 14 reaches its folded position from the upright position, the erasing 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 be erased according to the direction of erasure by bending of the elastic blade. When the signaling structure 58 reaches its folded position, the rigid beak 56 is located 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 abutment against the stop surface 54 of the rigid beak, in the locking direction 52, ensuring the locking of the signaling structure in its folded position.

[0074] The elastic blade 58 has a plane geometry perpendicular to the relative direction of erasure DI with a small thickness in the direction of erasure Dl, to flex easily under the effect of the erasure ramp 60 without generating significant force 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 driven in a simple rotation about the folding axis Al towards its upright position. The passive lock 20 does not include a retraction means allowing its unlocking by a simple rotation of the signaling structure 14, about the folding axis Al, from its folded position towards its upright position.

[0076] In the example illustrated, the relative direction of erasure D1 is perpendicular to the folding axis AL. Alternatively, it could be provided that the relative direction of erasure D1 is parallel to the folding axis Al or that it extends in any other direction, while remaining perpendicular to the locking direction D2. It could for example be provided that it is perpendicular to one of the sides of the triangle other than its base side by which it is connected to the retraction articulation 46. The signaling device could thus comprise two passive locks, for example arranged symmetrically on each side of the signaling structure relative to the median plane of the signaling structure perpendicular to the folding axis Al, for example a lock arranged on each of the sides of the triangular shape other than the base side.

[0077] We will now 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 an operation of deploying 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 controlling 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 therefore locked in rotation about the folding axis A1 by the distal edge 52 of the window. From this position, the motorized actuator 30 is controlled so that it causes the pivoting of the mobile chassis 36 about the folding axis A1. It can be seen in this [Fig. 7] that, in a plane perpendicular to the folding axis A1 and passing through the locking point P where contact is made between the locking elements 52, 54 linked respectively to the base 20 and to the signaling structure 14, when the mobile chassis 36 is in the service position, the first retraction axis A5 is arranged between the locking point P and the folding axis A1.

[0079] As a result, when the mobile chassis 36 pivots around the folding axis A1, controlled by the motorized actuator 30, the first retraction axis A5, which represents the first retraction hinge 46, also pivots around the folding axis A1 in a direction which tends to move it away from the locking point of 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 A1. Due to the movement of the mobile chassis 36 and the locking of the signaling structure 14, the retraction joint 46 is stressed and allows 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.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 done against the return means of the retraction joint.

[0080] Since the pivoting movement of the mobile chassis 36 moves the first retraction axis A5 away from the locking point P, it carries with it the signaling structure 14 which therefore tends to move in a direction which is substantially radial relative to the folding axis A1, 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 of which would be the mobile chassis 36. This disengagement movement D3 is generally perpendicular to the folding axis A1. 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 A1 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 not to oppose this clearance movement D3.

[0081] The amplitude of the clearance displacement of the signaling structure 14 relative to the base, in the radial direction relative to the folding axis A1, is directly linked on the one hand to the distance between the folding axis A1 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 A1, which we have seen is for example between 70 and 110 degrees, preferably between 80 and 100 degrees, more preferably equal to 90 degrees. Thus, the signaling structure 14 moves relative to the base 20, in the clearance direction D3, by a clearance distance making it possible to release the locking element 54 linked to the signaling structure 14 from the locking element 52 linked 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 stop 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 there, as shown schematically in [Fig. 11], the return means of the retraction joint 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 in its pivoting about the folding axis A1. During this catching up, the mobile chassis 36 can continue its pivoting about the folding axis A1 until it reaches its service position illustrated in [Fig.8]. Once the mobile chassis 36 has reached its service position and this catching up of the mobile chassis 36 by the signaling structure 14 has been carried out, the latter is in its upright position illustrated in [Fig.8].

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

[0084] By having a visual signaling device 12 comprising a locking latch in the folded position of the signaling structure 14 relative to the base 20, the device 12 can be installed without worrying about its orientation on the vehicle 10 relative to the forward direction of movement of the vehicle, and in particular without worrying about its orientation relative to the aerodynamic forces likely to apply, when the vehicle is moving, to the signaling structure 14 when it is in the folded position. Thus, as illustrated in [Fig.l], the visual signaling device 12 can be installed on the vehicle 10 in such a way 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 lock 50 secures the maintenance of the signaling structure in the folded position, even in the case where aerodynamic forces would tend to lift the latter towards its upright position.Thus locked, even when installed forwards relative to its folding axis, the signaling structure in the folded position is not likely to straighten up unintentionally, which could have serious consequences, such as breakage of the device, damage to the vehicle, or even the tearing off of all or part of the device with projection of elements into the surroundings of the vehicle, compromising the safety of other road users.

Claims

1. Claims 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 folding position, and vice versa, • a signaling structure (14) which is articulated on the mobile chassis by at least one retraction joint (46) around at least one first retraction axis (A5) parallel to the folding axis (A1) and distinct from the folding axis (A1), 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 retraction direction in rotation around the first retraction 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 comprises 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 locking position, lock the rotation of the signaling structure (14) in position folded around the folding axis (Al), by abutting the two locking elements (52, 54) at a locking point (P) in a locking direction (D2) which, at the locking point (P), is tangential to a pivoting around the folding axis (Al), • in that the locking point (P) of the passive lock is arranged 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 controlling the motorized actuator (30) to cause a pivoting movement of the mobile chassis (36), from its folding position to its service position, the retraction joint (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), in a release direction (D3) perpendicular to the locking direction (D2), by a release distance allowing the locking element (54) linked to the signaling structure (14) to be released from the locking element (52) linked 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, in a relative retraction direction (D1) perpendicular to the locking direction (D2), between the relative locking position and a relative retraction position in which they allow the rotation of the signaling structure (14) around the folding axis (Al).

3. Visual signaling device according to claim 2, characterized in that the passive lock (50) comprises 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 one of claims 2 or 3, characterized in that the passive lock comprises a unique erasure ramp (60) which forces the passage of the two locking elements (52, 54) towards their erasure position in the erasure direction (Dl), against the return means (58), when the signaling structure (14) reaches 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 mobile chassis (36) around the folding axis (A1), from its folding position to its service position, the first retraction 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 direction of rotational retraction 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 folding position to its service position, around the folding axis (A1).

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 retraction 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. Visual signaling device according to any one of the preceding claims, characterized in that the signaling structure (14) comprises a sign (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 in such a way that, in the folded position of the signaling structure (14), one end of the signaling structure which is opposite the retracting articulation (46) in a direction perpendicular to the folding axis (Al) is arranged in front of the folding axis (Al) relative to a forward direction of movement of the vehicle.

Images