Vehicle steering device comprising mobile structure and mobile structure locking device

Abstract

A vehicle steering device comprising:-a mobile structure,-an actuator connected to the mobile structure and arranged to automatically move the mobile structure,-a locking device arranged to have: an unlocked state in which the mobile structure is movable, and a locked state in which the mobile structure is movable, the mobile structure is locked, characterized in that the steering device comprises an emergency disengagement device arranged to have a first state in which the locking device can be held in an unlocked state and can be manually actuated by a user to enter a second state (activated or emergency state) in order to at least partially release the locking device, and the locking device can enter a locking state.

Description

Technical Field

[0001] The present invention generally relates to a vehicle steering device including a mobile structure, and more particularly to a vehicle steering wheel having a movable part, wherein the movable part (such as a rim part or the entire rim) is capable of moving between a steering position (used when the vehicle is controlled by a driver) and a retracted position (used when the vehicle is parked or in autonomous driving). Background Art

[0002] Known vehicle steering wheels in the prior art propose a basic structure and a mobile structure hinged to the basic structure, and the mobile structure is capable of moving between a steering position (used when the vehicle is controlled by a driver) and a retracted position (used when the vehicle is parked or in autonomous driving). As described in document FR3120345, an automatic electric movement of the mobile structure between the steering position and the retracted position can be achieved. For such a design, if the mobile structure gets stuck in the retracted position for some reason, the driver will not be able to drive the vehicle. In particular, no solution has been proposed to ensure that the driver can still drive the vehicle safely again in such a case, even if the mobile structure is manually reset to the steering position. Summary of the Invention

[0003] To solve the above-mentioned deficiencies of the prior art, the present invention aims to first provide a vehicle steering device having a movable part, wherein the movable part is capable of automatically moving between a steering position and a retracted position, and the vehicle steering device can still ensure the safe driving of the vehicle even after a failure occurs in the automatic movement of the mobile structure.

[0004] For this purpose, a first aspect of the present invention relates to a vehicle steering device, comprising:

[0005] - a mobile structure, which is arranged to be movable between a steering position and a retracted position,

[0006] - an actuator, which is connected to the mobile structure and arranged to automatically move the mobile structure between the steering position and the retracted position,

[0007] - a locking device, which is arranged to have:

[0008] ● an unlocked state, in which the mobile structure can move between the steering position and the retracted position,

[0009] ● a locked state, in which the mobile structure is locked in the steering position, and the driver can steer the vehicle by operating the mobile structure in the locked steering position,

[0010] It is characterized in that the steering device includes an emergency release device, which is arranged to:

[0011] ● having a first state in which the locking device can be kept in an unlocked state,

[0012] ● being manually actuable by a user to enter a second state (activation or emergency state), thereby at least partially releasing the locking device so that the locking device can enter a locked state.

[0013] In the above-described embodiment, the movement of the mobile structure between the operating position and the stowed position is automatic. The steering device further includes a locking device for locking the mobile structure in the operating position. According to the invention, the steering device includes an emergency release device; in case of necessity, for example when the actuator fails, the emergency release device allows manual operation of the locking device so as to achieve locking when the mobile structure is reset to the operating position. At this time, the driver can control the mobile structure so that it can no longer leave the operating position. In the above-described embodiment, once the emergency release device is activated (in the second state, i.e., the activation or emergency state), it releases the locking device so as to achieve locking when the mobile structure is reset to the operating position, and this operation is independent of the state of the actuator. That is to say, the emergency release device can be activated at any position of the mobile structure, such as the operating position, the stowed position or the intermediate position, to enter the second state (activation or emergency state), thereby releasing the locking device held in the unlocked state. Subsequently, the released locking device can automatically or manually enter the locked state when the mobile structure is reset to the operating position (manually or in a degraded mode). Note that, in addition, during normal use of the vehicle, the locking device can also: lock the mobile structure in the operating position each time the vehicle is controlled by the driver (manual driving mode); or conversely, only lock when the mobile structure cannot move automatically due to a fault.

[0014] The present invention can be defined by the following individual features or combinations of features.

[0015] In one embodiment, the steering device may include an elastic return device configured to control, push and force the locking device into the locked state at least when the emergency release device is in the second state (activation or emergency state). In the above-described embodiment, once the locking device is released by the activated emergency release device, the elastic return device can continuously act on the locking device to automatically reset it to the locked state.

[0016] In one embodiment, the emergency release device entering the activation or emergency state causes the locking device to short-circuit or disconnect from any locking control device. That is to say, when the emergency release device enters the activation or emergency state, the locking device can automatically reset to the locked state, or at least without additional external operation.

[0017] In one embodiment, when the emergency release device is in the second state (activated or emergency state), the locking of the locking device can be irreversible. The irreversible switching ensures operational safety: indeed, once the locking device is in the locked state, it cannot return to the unlocked state: the mobile structure can only remain in the operating position.

[0018] In one embodiment, the (vehicle) steering device may include:

[0019] - at least one covering member configured to hide the actuator and / or the locking device and / or the emergency release device from view of the user,

[0020] - a through-hole provided in the covering member through which the user can use a control tool different from the steering device to control the emergency release device to move the emergency release device from the initial state to the activated or emergency state.

[0021] In one embodiment, the (vehicle) steering device may include at least one covering member configured to hide the actuator and / or the locking device and / or the emergency release device from view of the user,

[0022] The covering member includes an actuating portion defined in the covering member by at least one weak zone and configured to separate or move relative to the covering member (e.g., by at least partial incision) so that the emergency release device enters the second state (activated or emergency state). The actuating portion generally forms a tool portion that allows the user to interact with the emergency release device to bring it into the activated state. Providing the actuating portion or tool portion in the covering member can ensure that the user can always use the actuating portion or tool portion and that the component is not lost.

[0023] In one embodiment, the covering member may include a hinge zone configured to allow the actuating portion or tool portion to swing towards the activation zone of the emergency release device. In the above-described embodiment, the actuating portion or tool portion does not separate, and the covering member ensures the correct positioning of the actuating portion or tool portion relative to the emergency release device.

[0024] In one embodiment, the emergency release device may enter from the first state to the second state (activated or emergency state) irreversibly. For example, by disconnecting the fixing member of the release device in the initial state; alternatively, wherein, without disassembling the vehicle covering, the emergency release device may enter from the first state to the second state (activated or emergency state) irreversibly. The irreversible state transition ensures operational safety: in fact, once the locking device is in the locked state, it cannot return to the unlocked state, and the mobile structure can only remain in the operating position. To return the emergency release device to the first state, it may be provided to either damage a specific component or use a tool, which ensures that a specific operation is not accidentally performed.

[0025] In one embodiment, the steering device may form or include a gripping contact surface for the user to drive or control the vehicle. The user can hold the gripping contact surface to drive or control the vehicle. The gripping contact surface may form a closed structure (such as a ring, rim, frame, etc.) or an open structure (such as a U-shape, handle, etc.). The gripping contact surface may be circular, elongated, oval, rectangular, or the like in shape.

[0026] In one embodiment, at least a part of the gripping contact surface may form a mobile structure. In particular, the mobile structure may include at least a part of the gripping contact surface directly used for gripping, and / or at least a connecting part with the rest of the steering device.

[0027] More generally, it may be provided that the mobile structure includes or encompasses at least a part of the steering device, and the part includes a human-machine interface (all or part of the gripping part, and all or part of the part supporting control buttons, levers, joysticks, touchscreens, and / or displays). The retraction of at least the part of the steering device including the human-machine interface may free up space during the autonomous driving phase.

[0028] In one embodiment, the steering device may form or include at least one of the following: a handle, a joystick, a rim, a frame, or a grip.

[0029] In one embodiment, the steering device may form or include a steering wheel, and may include:

[0030] - a hub.

[0031] In one embodiment, the steering device may form or include a steering wheel, and may include:

[0032] - at least one rim part, and the at least one rim part forms a mobile structure.

[0033] In one embodiment, the steering device may form or include a steering wheel, and may include:

[0034] - At least one spoke or hinge provided between the hub and the at least one rim part.

[0035] In one embodiment, the steering device may include at least one torque limiter provided between the actuator and the mobile structure. Such a torque limiter can be used to force the mobile structure back to the steering position.

[0036] In one embodiment, when the emergency release device switches from the first state to the second state (activated or emergency state), it can cause the torque limit value to decrease; when exceeding the torque limit value, the torque limiter can cause a slip or relative movement between the mobile structure and the actuator. That is to say, activating the emergency release device reduces the force required to cause the torque limiter to slip. It is even possible to consider completely separating the mobile structure from the actuator for free movement. The user can easily move the mobile structure to the steering position, causing the locking device to automatically enter the locked state.

[0037] In one embodiment, the actuator can engage with the locking device, and the emergency release device can be arranged to at least partially release the actuator from the locking device when entering the second state (activated or emergency state). Activating the emergency release device can at least partially release the control chain or transmission mechanism between the actuator and the locking device. That is to say, when the emergency release device is activated, a gap or freedom of movement is created between the actuator and the locking device.

[0038] In one embodiment, the steering device may include a drive device connecting the actuator and the locking device, and the drive device may include:

[0039] - At least one connecting member provided between the locking device and the actuator,

[0040] - At least one spacer or stop for fixing the connecting member,

[0041] And the emergency release device can be arranged to retract the spacer or stop when entering the activated or emergency state.

[0042] In one embodiment, the steering device may include a drive device connecting the actuator and the locking device, wherein the drive device may include a kinematic chain, and when the emergency release device is actuated, it can be arranged to create a gap in the kinematic chain, and the gap is at least equal to the stroke of the mobile structure between the steering position and the stowed position.

[0043] In one embodiment, the drive device can be arranged to sequentially control:

[0044] - The mobile structure moves from the stowed position to the steering position, and then the locking device switches from the unlocked state to the locked state, and / or

[0045] - The locking device switches from the locked state to the unlocked state, and then the mobile structure moves from the operating position to the stowed position.

[0046] In one embodiment, the steering device may include at least one control cable, the control cable being arranged to hold the locking device in the unlocked state, and the emergency release device may be arranged to slacken the control cable and / or remove a stop from the sleeve housing the control cable when actuated.

[0047] In one embodiment, the steering device may include a base structure, and the mobile structure may be movable relative to the base structure.

[0048] In one embodiment, the steering device may include at least two articulation elements provided between the base structure and the mobile structure. For example, two pivot articulation elements may be provided.

[0049] In one embodiment, the steering device may include two locking devices, each locking device being arranged to lock the mobile structure in the operating position. The locking devices may be distributed on or near the articulation elements.

[0050] In one embodiment, the emergency release device may be arranged to act only on one of the two locking devices. In a degraded operating mode, once the emergency release device is activated, the locking device in the locked state is sufficient to lock the mobile structure, for example in order to drive the vehicle to a repair centre.

[0051] In one embodiment, the (vehicle) steering device may include:

[0052] - a locking sensor arranged to detect whether the locking device is in the locked state,

[0053] - a control unit arranged to be able to prohibit at least one function of the vehicle or send an alert to the driver if the locking device is not in the locked state (i.e., if the mobile structure is not locked in the operating position).

[0054] In one embodiment, the function that may be prohibited may be the authorization to start or drive the vehicle.

[0055] A last aspect of the invention relates to a motor vehicle comprising at least one steering device according to the first aspect of the invention. Description of the Drawings

[0056] Other features and advantages of the invention will become more clearly understood by reading the following detailed description of the invention, which is set forth by way of non-limiting example and illustrated in the accompanying drawings, in which:

[0057] Figure 1 ​shows a front view of a steering device having a mobile structure, an infrastructure, and a hinge provided between the mobile structure and the infrastructure;

[0058] Figure 2 shows Figure 1 a partial perspective view of the shown steering device to show the hinge and the cable drive device provided between the hinges;

[0059] Figure 3A shows Figure 1 a side view of the locking device on the hinge of the shown steering device, and the locking device is in a locked state;

[0060] Figure 3B shows Figure 3A the shown locking device in an unlocked state;

[0061] Figure 4 shows Figure 2 a perspective view of the cable drive device of the steering device shown in, the drive device includes an emergency release device capable of locking the device into Figure 3A the shown locked state;

[0062] Figure 5 shows a cross-sectional view of the emergency release device in a first state (unactivated state);

[0063] Figure 6 shows a cross-sectional view of the emergency release device in an activated or emergency state;

[0064] Figure 7 shows Figure 5 a perspective view of the shown emergency release device in a first state (unactivated state);

[0065] Figure 8 shows Figure 6 a perspective view of the shown emergency release device in an activated or emergency state;

[0066] Figure 9 shows the emergency release device in Figure 5 or Figure 7 another alternative embodiment of the shown first state (unactivated state). Detailed Description

[0067] Figure 1 ​​​​​​​​​Shows a vehicle steering wheel that forms part of a motor vehicle steering device. The base structure 10 supports the mobile structure 20 via the spokes 30. The base structure 10 generally forms the hub of the steering wheel, while the mobile structure 20 generally forms the rim of the steering wheel. The steering device includes a first hinge 40 and a second hinge 50 to enable the mobile structure 20 to pivot relative to the base structure 10.

[0068] Therefore, the first hinge 40 and the second hinge 50 form a pivotal connection, but other types of hinges (such as hinges with sliding connections, levers, and linkages) can also be considered.

[0069] Therefore, the movable structure 20 can move between the following positions:

[0070] - The operating position ( Figure 1 ) where the user can hold it to drive the motor vehicle, and

[0071] - The stowed position (not shown) where the user can, for example, place a computer on the mobile structure depending on the location, or increase the available legroom...

[0072] An actuator such as an electric motor can be provided to automatically move the mobile structure between the operating position and the stowed position.

[0073] Figure 2 shows a partial perspective view of the vehicle steering wheel shown, with the mobile structure 20 not shown. It can be noted that the first hinge 40 includes a driving gear 41, which can be driven, for example, by an electric motor (not shown) via a torque limiter 43 and a driven gear 42 that meshes with the driving gear 41. The driven gear 42 can be arranged to move the mobile structure 20 when rotating in one direction or the other. Figure 1

[0074] Locking devices can also be provided on each of the hinges 40 and 50 to lock the mobile structure when it is in the operating position. In particular, each locking device can be arranged to be in:

[0075] - The unlocked state in which the mobile structure 20 can move freely between the stowed position and the operating position, and

[0076] - The locked state in which the mobile structure 20 is locked in the operating position.

[0077] ​It can be stipulated that the same actuator (an electric motor that moves a movable structure) causes the locking device to switch from the locked state to the unlocked state, and vice versa. For this purpose, sequential driving can be provided through a driven gear 42 (a pin integrally connected to the driven gear 42, the pin moves in an elongated opening of the movable structure, moves the movable structure when the pin abuts against one end or the other end of the elongated opening, and a cam driven during the movement of the pin in the elongated opening to control the locking device).

[0078] On one side of the first hinge, the driven gear 42 ensures sequential control of the movement of the movable structure 20 and controls the locking device located on that side, and a cable drive device 60 is provided to control the locking device located on one side of the second hinge 50. Therefore, on one side of the first hinge 40, there is driving of the movement of the movable structure and driving of the locking device. On one side of the second hinge 50, only the locking device needs to be controlled through the cable drive device 60.

[0079] In Figure 2 , the second hinge 50 includes a control disk 51, and the control disk can pivot around the axis of the second hinge under the control of the cable drive device 60.

[0080] Specifically, referring to Figure 3A , the control disk 51 meshes with the terminal joint 66 of the control cable 61 and meshes with a spiral return spring. Pulling the control cable 61 can cause the control disk 51 to pivot in the clockwise direction in Figure 3A , and releasing the control cable 61 allows it to rotate counterclockwise under the action of the spiral return spring.

[0081] The second hinge 50 also includes a locking device, which mainly consists of a locking pin 53 pivotable around a pivot axis 54 and a locking return spring 52. The locking pin 53 includes a cushion block 531, and the cushion block can be snapped into between a moving stop block 21 fixedly connected to the movable structure 20 and a fixed stop block 11 integrally connected to the base structure 10 as shown in Figure 3A .

[0082] In Figure 3A In the state shown, the locking device of the second hinge 50 is in the locked state, and one side of the moving stop block 21 is fixed by being abutted against the fixed stop block 11 by the cushion block 531, and the other side is fixed by a counter support member 12 integrally connected to the base structure 10. Note that the hatching on the members 11, 21, 53 does not represent a cross-sectional view, but only represents the integrally connected members that are relevant or need to be concerned about in the description.

[0083] To put the locking device into the unlocked state, simply pull the control cable 61 so that the end joint 66 pulls the control disk 51 in the clockwise direction. The control disk 51, in turn, acts on the locking pin 53 through its cam track 511, causing the locking pin 53 to rotate counterclockwise about the locking shaft 54. In this way, the spacer block 531 withdraws from the space between the moving stop 21 and the fixed stop 11, thus allowing the movable structure 20 to move, as Figure 3B shown.

[0084] To put the locking device into the locked state, the movement of the driven gear 42 causes the control cable 61 to move, so that the control disk 51 rotates counterclockwise under the action of the helical return spring, thereby disengaging the cam track 511 from the locking pin 53. When the movable structure 20 reaches the operating position, the locking pin can return under the action of the locking return spring 52 to Figure 3A the position shown. During normal operation, since the movable structure 20 and the locking device are driven by the same actuator, the movement of the movable structure and its entry into the locked or unlocked state are carried out sequentially.

[0085] Figure 4 The cable drive device 60 is shown in detail and mainly consists of a control cable 61 and a sleeve 62. The control cable 61 includes a control joint 65, which is arranged to be connected to the driven gear 42, and an end joint 66, which is arranged to mesh with the control disk 51. The sleeve 62 includes a first stop ring 64 that meshes with the basic structure 10 and a second stop ring 63 that meshes with the emergency release device 70, which is itself integrated with the basic structure 10. Therefore, the sleeve 62 is completely fixed relative to the basic structure 10, thus allowing the effective transmission of motion through the control cable 61.

[0086] However, if the actuator fails when the movable structure 20 is unlocked from the operating position, the locking device of the second hinge 50 can be operated to return it to the locked state and lock the movable structure 20 in the operating position, so as to allow the driver to drive the vehicle using an operable and safe steering device.

[0087] Specifically, it is recommended to separate the locking device of the second hinge 50 from the actuator through the emergency release device 70. Specifically, the emergency release device 70 is arranged to be able to create a gap or slack in the cable drive device 60 to allow the control disk 51 to pivot counterclockwise Figure 3A independently of the driven gear 42.

[0088] For this purpose, as Figures 5 to 8 shown, the emergency release device 70 includes a housing 71 and a moving clip 72. The housing 71 includes an internal hole for accommodating the second stop ring 63 of the sleeve 62, and the moving clip 72 can be in:

[0089] - the normal position, asFigure 5 and Figure 7 As shown in Figure 7 , at this position, the resilient pawl 721 of the movable latch 72 engages with the convex tooth 711 of the housing 71.

[0090] - Free position, as Figure 6 and Figure 8 shown, at this position, the resilient pawl 721 of the movable latch 72 disengages from the convex tooth 711 of the housing 71.

[0091] The movable latch 72 includes a fixed wall which is arranged to block the second stop ring 63 at the outlet of the hole of the housing 71 when the movable latch 72 is in the normal position, as shown in the cross-sectional view of Figure 5 . Once the movable latch 72 is in the free position, the fixed wall is no longer opposite to the second stop ring 63, and the second stop ring can slide into the bottom of the hole of the housing 71, so that the control cable 61 becomes slack.

[0092] It can be arranged to use a specific tool to move the movable latch from the normal position, and the tool can pass through a specific opening provided in the steering device or the vehicle covering. For example, a through hole located on the lower wall or usually invisible to the driver can be provided. Or, a fragile or elastic part can be provided, which is broken or removed to access the emergency release device 70.

[0093] Or, as Figure 9 shown, an actuating part can be directly provided in the covering 81 used as a shielding part so that the driver cannot see the internal structure of the steering device. The actuating part (or can be said to be the tool part) is embodied by a dent 83 on the visible side, is defined by a weak area 84 in the covering 81, and is connected by a hinge 82 formed by a reduced thickness. If necessary, the user can press the actuating part by pressing the dent 83 to break the weak area 84 and pivot the actuating part around the hinge 82 towards the movable latch 72, pushing it towards Figure 9 the right side of Figure 9 as shown by the dashed arrow. Therefore, the movable latch 72 can be moved from the normal position (as Figure 6 or Figure 8 shown) to the free position, as

[0094] When the actuator fails, if the movable structure 20 is not locked in the operating position, the driver cannot drive the vehicle safely. At this time, only the emergency release device 70 needs to be operated to switch it from the Figure 5 , Figure 7 or Figure 9 shown first state to Figure 6 and Figure 8The activation or emergency state shown is to push the movable clip 72 from the normal position to the free position. Thus, the control panel 51 can pivot under the action of the helical return spring, and once the mobile structure 20 is in the operating position, the locking pin 53 will freely return to Figure 3A the locking position shown.

[0095] As described above, a torque limiter is provided between the mobile structure 20 and the actuator, so that the driver can move the mobile structure 20 by applying sufficient force to overcome the sliding torque. Therefore, in the case of activation of the emergency release device, when the mobile structure 20 is in the operating position again, the locking device of the second hinge 50 can automatically return to the locked state. Then, the vehicle can travel safely with the mobile structure in the locked operating position. Sensors can be provided to verify whether the locking device actually locks the mobile structure 20 in the operating position and, for example, allow the vehicle to start or be started.

[0096] Note that the entry of the emergency release device 70 into the activated or emergency state is irreversible. In particular, without specific tools and / or disassembly operations, the emergency release device 70 cannot return to Figure 5 、 Figure 7 or Figure 9 the first state shown. In fact, the second stop ring 63 must be reset and then the movable clip 72 moved to block the second stop ring 63 at the exit of the hole in the housing 71, and this must be achieved by a specific manual operation.

[0097] Industrial application

[0098] The steering device (i.e., the steering wheel or vehicle steering wheel) described in the present invention and its manufacture are easy for industrial application.

[0099] It is known that various obvious modifications and improvements can be made to the various embodiments of the present invention described in this specification that are applicable to those skilled in the art without departing from the scope of the present invention.

[0100] In particular, any type of hinge (linkage, lever, rack, etc.) can be used between the mobile structure and the base structure. Any type of locking method can be used for the operating position of the mobile structure on the base structure: locking pin, tooth, pin, plug inserted into a lock, etc. A translational movement, a rotational movement or a combination of both can be provided. A dedicated actuator can be provided for the movement of the mobile structure, another actuator can be provided for the locking of the mobile structure, or a manual movement method can also be provided.

Claims

1. A vehicle steering device, the vehicle steering device comprising: - A mobile structure (20) configured to be movable between an operating position and a stowed position, - An actuator connected to the mobile structure (20) and configured to automatically move the mobile structure (20) between the operating position and the stowed position, - A locking device configured to have: ● An unlocked state in which the mobile structure (20) can be moved between the operating position and the stowed position, ● A locked state in which the mobile structure (20) is locked in the operating position and the driver can steer the vehicle by operating the mobile structure (20) in the locked operating position, Characterized in that the steering device includes an emergency release device (70) configured to: ● Have a first state in which the locking device can be maintained in the unlocked state, ● Be manually actuable by a user to enter a second state (activated or emergency state) to at least partially release the locking device such that the locking device can enter the locked state.

2. The steering device according to claim 1, the steering device comprising an elastic reset device configured to force the locking device into a locked state at least when the emergency release device (70) is in a second state (activated or emergency state).

3. The steering device according to any one of claims 1 or 2, wherein, When the emergency release device (70) is in the second state (activated or emergency state), the entry of the locking device into the locked state is irreversible.

4. The steering device according to any one of claims 1 to 3, the steering device comprising: - At least one covering member (81) configured to hide the actuator and / or the locking device and / or the emergency release device (70) from view of the user, - A through-hole through which the user can use a control tool different from the steering device to control the emergency release device (70) to cause the emergency release device (70) to move from the initial state to the activated or emergency state.

5. The steering device according to any one of claims 1 to 3, the steering device comprising at least one covering member (81) configured to hide the actuator and / or the locking device and / or the emergency release device (70) from view of the user, wherein, The covering member (81) includes an actuating portion defined in the covering member (81) by at least one weak zone (84) and configured to separate or move relative to the covering member (81) such that the emergency release device (70) enters the second state (activated or emergency state).

6. The steering device according to claim 5, wherein, The covering member (81) includes a hinge zone (82) configured to allow the actuating portion or the tool portion to swing towards the activation zone of the emergency release device (70).

7. The steering device according to any one of claims 1 to 6, wherein, The emergency release device (70) is irreversible in moving from the first state to the second state (activated or emergency state), for example, by disconnecting the fixing member of the release device in the initial state; or, wherein, without disassembling the vehicle covering member (81), the emergency release device (70) is irreversible in moving from the first state to the second state (activated or emergency state).

8. The steering device according to any one of claims 1 to 7, the steering device forming a steering wheel, comprising: - A wheel hub, - At least one rim portion forming the mobile structure (20).

9. The steering device according to any one of claims 1 to 8, the steering device comprising at least one torque limiter disposed between the actuator and the mobile structure (20).

10. The vehicle steering device according to any one of claims 1 to 9, wherein, The actuator engages with the locking device, and wherein the emergency release device (70) is configured to at least partially release the actuator from the locking device when entering the second state (activated or emergency state).

11. The vehicle steering device according to claim 10, the vehicle steering device comprising a drive device connecting the actuator to the locking device, wherein,The drive device includes: - At least one connecting member disposed between the locking device and the actuator, - At least one spacer or stop for fixing the connecting member, And wherein the emergency release device (70) is configured to retract the spacer or stop when entering the activated or emergency state.

12. The vehicle steering device according to any one of claims 1 to 10, wherein the vehicle steering device includes a drive device connecting an actuator and a locking device, and wherein, The drive device includes a kinematic chain, and in this case, the emergency release device (70) is arranged, upon actuation thereof, to create a clearance in the kinematic chain, the clearance being at least equal to the travel of the mobile structure (20) between the operating position and the stowed position.

13. The vehicle steering device according to any one of claims 11 or 12, wherein, The drive device is arranged to control successively: - the mobile structure (20) from the stowed position to the operating position, then the locking device from the unlocked state to the locked state, and / or - the locking device from the locked state to the unlocked state, then the mobile structure (20) from the operating position to the stowed position.

14. The vehicle steering device according to any one of claims 1 to 13, wherein the vehicle steering device includes at least one control cable (61), the control cable being arranged to hold the locking device in an unlocked state, and wherein, The emergency release device (70) is arranged, upon actuation thereof, to slacken the control cable (61) and / or to remove a stop from the sleeve housing the control cable.

15. A motor vehicle, the motor vehicle including or not including the steering device according to any one of claims 1 to 14.

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