The present invention relates to a steering assembly having a multi-function steering wheel.
Presently, vehicles are being developed having autonomous driving capabilities. During some autonomous driving events the steering wheel of the selectively autonomous vehicle is not necessary to control the selectively autonomous vehicle.
According to an embodiment of the present invention, a steering assembly is provided. The steering assembly includes a steering wheel, an advanced driver assist system, an environmental detection system, and a controller. The steering wheel is selectively coupled to a steering shaft and the steering wheel is movable between a deployed position and a retracted position. The advanced driver assist system is in communication with the steering wheel and is configured to selectively control an autonomous vehicle. The environmental detection system is configured to provide a cabin environmental signal. The controller is in communication with the advanced driver assist system. The controller is programmed to, while the steering wheel is in the retracted position, move the steering wheel towards the deployed position and operatively couple the steering wheel to the steering shaft, in response to a request to deactivate the advanced driving assisted system and the cabin environmental signal indicating a clear path of travel of the steering wheel.
According to another embodiment of the present invention, a steering assembly is provided. The steering assembly includes a steering wheel having a convenience feature, an environmental detection system, and a controller in communication with an autonomous vehicle. The steering wheel is selectively coupled to a steering shaft and is movable between a deployed position and a retracted position. The environmental detection system is configured to provide a cabin environmental signal. The controller is programmed to move the steering wheel towards the retracted position and operatively decouple the steering wheel from the steering shaft, while the steering wheel is in the deployed position and in response to a request to activate an advanced driver assist system and the cabin environmental signal indicating a clear path of travel of the steering wheel.
According to yet another embodiment of the present invention, a selectively autonomously controlled vehicle is provided. The selectively autonomously controlled vehicle includes a controller in communication with a steering assembly and a plurality of vehicle sensors. The controller embodies an autonomous driving assisted system. The steering assembly includes an environmental detection system and a steering wheel. The environmental detection system includes a cabin environmental sensor configured to provide a signal to the controller indicative of a condition within the vehicle compartment. The steering wheel is selectively coupled to a steering shaft. The controller switches the steering wheel from a rotatable state to a non-rotating state and decouples the steering wheel from the steering shaft, in response to the activation of the autonomous driving assisted system and the signal.
These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
The subject matter which is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
Referring now to the Figures, where the invention will be described with reference to specific embodiments, without limiting same, it is to be understood that the disclosed embodiments are merely illustrative of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
Referring to
The steering assembly 20 includes a steering wheel 30, an adjustment assembly 32, an environmental detection system 34, a torque-displacement sensor 36, and a controller 38. The steering wheel 30 is operatively connected to a steering column that extends along a steering column axis 50. The steering wheel 30 is selectively coupled to a steering shaft 52 that extends through the steering column along the steering column axis 50. The steering wheel 30 may be directly or indirectly coupled to the steering shaft 52 through a coupling mechanism 54. The coupling mechanism 54 may include a disconnect clutch. The steering wheel 30 is coupled to the steering shaft 52 when the disconnect clutch of the coupling mechanism 54 is at least partially engaged and the ADAS 22 is deactivated. The steering wheel 30 is decoupled from the steering shaft 52 when the disconnect clutch of the coupling mechanism 54 is disengaged and the ADAS 22 is activated.
In at least one embodiment, the coupling mechanism 54 is configured as a component of a steer by wire system that electrically couples the steering wheel 30 to the steering shaft 52. The coupling mechanism 54 may include a device, such as a rotary encoder, that interprets rotation of the steering wheel 30 and applies information to an actuator that rotates the steering shaft 52 that pivots a pair of vehicle wheels. The device provides a signal to the actuator when the ADAS 22 is deactivated. The device does not provide a signal or is ignored by the actuator when the ADAS 22 is activated.
The steering wheel 30 is switchable between a rotating state/rotatable state and a non-rotating state. The steering wheel 30 is able to be rotated when the ADAS 22 is deactivated. The driver of the selectively autonomous vehicle is able to provide directional control of the selectively autonomous vehicle through the steering wheel 30 when the ADAS 22 is deactivated. The steering wheel 30 is in a non-rotating state when the ADAS 22 is activated. The steering wheel 30 is inhibited from rotating in the non-rotating state. The steering wheel 30 is in the non-rotating state when the steering wheel 30 is operatively decoupled from the steering shaft 52. In at least one embodiment, when the ADAS 22 is activated, the steering shaft 52 counter rotates such that no rotation of the steering wheel 30 is caused by the performance of steering maneuvers controlled by the ADAS 22. It is to be appreciated that “decoupling: the steering wheel 30 from the steering shaft 52 may be done mechanically, electrically, or a combination thereof.
Referring to
Referring to
The locking mechanism 72 is in communication with the controller 38. The locking mechanism 72 is configured to inhibit movement of the extensible member 70 away from the stowed position when at least one of the ADAS 22 is deactivated, the steering wheel 30 is operatively coupled to the steering shaft 52, the steering wheel 30 is in a deployed position, and the steering wheel 30 is able to be rotated. The locking mechanism 72 is at least one of a latch, hook, magnet, or the like that engages at least one of a first end 74 of the extensible member 70. The locking mechanism 72 is configured to permit movement of the extensible member 70 between the stowed position and the extended position when at least one of the ADAS 22 is activated, the steering wheel 30 is operatively decoupled from the steering shaft 52, the steering wheel 30 is in a retracted position, and the steering wheel 30 is in a non-rotating state.
Referring to
The recess 80 extends from a surface of the core 60 of the steering wheel 30 towards the steering shaft 52. The recess 80 includes a first wall 90, a second wall 92, a third wall 94, and a fourth wall 96. A surface of at least one of the first wall 90, the second wall 92, the third wall 94, and the fourth wall 96 is configured as a non-slip surface. The nomadic device 84 engages at least one of the first wall 90, the second wall 92, the third wall 94, and the fourth wall 96.
The first wall 90 is spaced apart from and disposed opposite the second wall 92. The first wall 90 and the second wall 92 are disposed generally parallel to each other. The third wall 94 extends between the first wall 90 and the second wall 92. The third wall 94 is disposed substantially perpendicular to the first wall 90 and the second wall 92. The fourth wall 96 extends between the first wall 90, the second wall 92, and the third wall 94. The fourth wall 96 is disposed closer to the steering shaft 52 than the first wall 90, the second wall 92, and the third wall 94.
The access panel 82 is pivotally or hingedly connected to the steering wheel 30 to permit or inhibit access to the recess 80. More specifically, the access panel 82 is connected to the core 60. As shown in
A locking feature 100 is provided. The locking feature 100 is disposed proximate the recess 80. The locking feature 100 is in communication with the controller 38. The locking feature 100 is configured to inhibit movement of the access panel 82 away from the closed position when at least one of the ADAS 22 is deactivated, the steering wheel 30 is operatively coupled to the steering shaft 52, the steering wheel 30 is in a deployed position, and the steering wheel 30 is able to be rotated. The locking feature 100 is at least one of a latch, hook, magnet, protrusion, or the like that engages a portion of the access panel 82. The locking feature 100 is configured to permit movement of the access panel 82 between the closed position and the open position when at least one of the ADAS 22 is activated, the steering wheel 30 is operatively decoupled from the steering shaft 52, the steering wheel 30 is in a retracted position, and the steering wheel 30 is in a non-rotating state.
Referring to
The deployed position corresponds to a driving position of the steering wheel in which the steering wheel 30 is able to be rotated and the driver of the selectively autonomous vehicle is able to provide steering input to the steering wheel 30 to steer the selectively autonomous vehicle.
The adjustment assembly 32 is in communication with the controller 38. The adjustment assembly 32 includes an actuator 120 and an extension member 122. The actuator 120 is disposed proximate the steering column. In at least one embodiment, the actuator 120 is disposed within the selectively autonomous vehicle instrument panel 110. The actuator 120 is at least one of an electronic actuator, a hydraulic actuator, a pneumatic actuator, or the like.
The extension member 122 is operatively coupled to the actuator 120 and at least one of the steering wheel 30 and the steering shaft 52. The extension member 122 is at least one of a lead screw, a sliding shaft, or the like. The actuator 120 and the extension member 122 are arranged to move the steering wheel 30 between the deployed position and the retracted position.
The adjustment assembly 32 is configured to move the steering wheel 30 from the retracted position towards the deployed position in response to a request to deactivate the ADAS 22. As the steering wheel 30 moves towards the deployed position or subsequent to the steering wheel 30 achieving the deployed position, the coupling mechanism 54 operatively couples the steering wheel 30 to the steering shaft 52.
The adjustment assembly 32 is configured to move the steering wheel 30 from the deployed position towards the retracted position in response to a request to activate the ADAS 22. As the steering wheel 30 moves towards the retracted position or prior to the steering wheel 30 moving towards the retracted position, the coupling mechanism 54 operatively decouples the steering wheel 30 from the steering shaft 52.
The environmental detection system 34 is in communication with the controller 38. The environmental detection system 34 is configured to monitor conditions within the vehicle compartment 10 that may impact the activation or deactivation of the ADAS 22 or the retraction or deployment of the steering wheel 30. The environmental detection system 34 includes a cabin environmental sensor 130 and an output device 132. The cabin environmental sensor 130 provides a cabin environmental signal to the controller 38. The cabin environmental signal provides information indicative of at least one of the following conditions: an obstacle between the steering wheel 30 and the driver, an object within a path of travel of the steering wheel 30, the location of the driver, the availability or unavailability of the driver (e.g. the driver asleep within the driver's seat, the driver not within the driver's seat, a pet or other object in the driver's lap, etc.) undesirable vehicle dynamics, objects disposed within or on the convenience feature 66.
The output device 132 is configured to output an indicator such as a visual, a haptic, or an audible indicator in response to the cabin environmental signal providing information indicative of the following conditions: an obstacle between the steering wheel 30 and the driver, an object within a path of travel of the steering wheel 30, a location of the driver, and unavailable driver (e.g. the driver asleep within the driver's seat, the driver not within the driver's seat, a pet or other object in the driver's lap, etc.) undesirable vehicle dynamics, objects disposed within or on the convenience feature 66. The indicator provides a notification to the driver. In at least one embodiment, the output device 132 outputs the indicator in response to a sensor associated with the ADAS 22 indicating an unsafe condition external to the vehicle compartment 10. The output device 132 may be provided as part of the selectively autonomous vehicle audio system, the selectively autonomous vehicle warning system, or a separate system capable of providing audio or visual outputs.
The cabin environmental sensor 130 is disposed within a sensor housing 134. The sensor housing 134 is disposed on or is integrally formed with the steering column of the steering assembly 20. In at least one embodiment, the cabin environmental sensor 130 is disposed within the vehicle compartment 10 above the steering assembly 20. In at least one embodiment, the cabin environmental sensor 130 is disposed within or proximate the driver's seat. The cabin environmental sensor 130 is at least one of a weight sensor, an optical sensor, an ultrasonic sensor, a seatback sensor, a thermal sensor, and a biometric sensor configured to detect a heartbeat or respiration of the driver of the selectively autonomous vehicle.
The adjustment assembly 32 is inhibited, by the controller 38, from moving the steering wheel 30 from the retracted position towards the deployed position in response to the cabin environmental signal indicating at least one of the above identified conditions, while the ADAS 22 is activated, and the steering wheel 30 is operatively decoupled from the steering shaft 52. The adjustment assembly 32 is commanded, by the controller 38, to move the steering wheel 30 from the retracted position towards the deployed position based on the cabin environmental signal not indicating at least one of the above identified conditions within the vehicle compartment 10 while the ADAS 22 is activated and the steering wheel 30 is operatively decoupled from the steering shaft 52.
The adjustment assembly 32 is inhibited, by the controller 38, from moving the steering wheel 30 from the deployed position towards the retracted position based on the cabin environmental signal indicating at least one of the above identified conditions while the ADAS 22 is deactivated and the steering wheel 30 is operatively coupled to the steering shaft 52. In at least one embodiment, the adjustment assembly 32 is inhibited, by the controller 38, from moving the steering wheel 30 from the deployed position towards the retracted position based on a sensor associated with the ADAS 22 indicating an unsafe condition external to the vehicle compartment 10.
The adjustment assembly 32 is commanded, by the controller 38, to move the steering wheel 30 from the deployed position towards the retracted position based on the cabin environmental signal indicating a clear path of travel of the steering wheel by the cabin environmental signal not indicating at least one of the above identified conditions, while the ADAS 22 is deactivated and the steering wheel 30 is operatively coupled to the steering shaft 52. In at least one embodiment, the adjustment assembly 32 is commanded, by the controller 38, to move the steering wheel 30 from the deployed position towards the retracted position based on a sensor associated with the ADAS 22 not indicating an unsafe condition external to the vehicle compartment 10.
The torque-displacement sensor 36 is in communication with the controller 38. The torque-displacement sensor 36 is disposed proximate at least one of the steering wheel 30 and the steering shaft 52. The torque-displacement sensor 36 is configured to output a signal, to the controller 38, indicative of a torque applied to the steering wheel 30 about the steering column axis. The torque-displacement sensor 36 is configured to output a signal, to the controller 38, indicative of displacement of the steering wheel 30 along the steering column axis. The adjustment assembly 32 is commanded, by the controller 38, to move the steering wheel 30 from the deployed position towards the retracted position in response to the application of at least one of a torque greater than a torque threshold and a displacement greater than a displacement threshold while the ADAS 22 is activated, the steering wheel 30 is in the retracted position, and the steering wheel is operatively decoupled from the steering shaft 52. In response to the movement of the steering wheel 30 from the deployed position towards the retracted position, the coupling mechanism 54 is configured to operatively couple the steering wheel 30 to the steering shaft 52.
The controller 38 may be provided as part of the ADAS 22. In at least one embodiment, the controller 38 embodies the ADAS 22. In at least one embodiment, the controller 38 is provided as a separate component from the ADAS 22 and is in communication with the autonomous vehicle, the autonomously driven vehicle, or the selectively autonomous vehicle. The controller 38 is in communication with a plurality of vehicle sensors including the cabin environmental sensor 130 of the environmental detection system 34 as well as other vehicle sensors in communication with the ADAS 22 such as occupant detection sensors, forward object detection sensors, rearward object detection sensors, ultrasonic sensors, etc.
The controller 38 interprets the various signals provided by the steering assembly 20, the ADAS 22, the environmental detection system 34, and the plurality of vehicle sensors to determine whether to activate or deactivate the ADAS 22 and output various warnings or alerts. The controller 38 issues commands to and receive signals from the steering wheel 30, the adjustment assembly 32, environmental detection system 34, the torque-displacement sensor 36, and the steering shaft 52. These commands and signals may result in the steering wheel 30 being operatively coupled or operatively decoupled from the steering shaft 52, the steering wheel 30 being in a retracted position or a deployed position, the steering wheel 30 being in a rotating condition or a non-rotating condition, and the output of indicators to the driver of the selectively autonomous vehicle.
The controller 38 includes a microprocessor or central processing unit (CPU) in communication with various types of computer readable storage devices or media. Computer readable storage devices or media may include volatile and nonvolatile storage in read-only memory (ROM), random-access memory (RAM), and keep-alive memory (KAM), for example. KAM is a persistent or non-volatile memory that may be used to store various operating variables while the CPU is powered down. Computer-readable storage devices or media may be implemented using any of a number of known memory devices such as PROMs (programmable read-only memory), EPROMs (electrically PROM), EEPROMs (electrically erasable PROM), flash memory, or any other electric, magnetic, optical, or combination memory devices capable of storing data, some of which represent executable instructions, used by the controller 38 in controlling the steering assembly 20 and the ADAS 22.
While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description.
This patent application claims priority to U.S. Provisional Patent Application Ser. No. 62/168,167, filed May 29, 2015, which is incorporated herein by reference in its entirety.
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