CN110550089B - Telescoping steering column system and method - Google Patents
Telescoping steering column system and method Download PDFInfo
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- CN110550089B CN110550089B CN201910461933.3A CN201910461933A CN110550089B CN 110550089 B CN110550089 B CN 110550089B CN 201910461933 A CN201910461933 A CN 201910461933A CN 110550089 B CN110550089 B CN 110550089B
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- steering column
- steering
- column shaft
- absorbing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
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Abstract
A steering column system includes a steering column shaft. A steering input device coupled to the steering column shaft is also included. An energy absorbing mechanism is also included that is operably engaged with at least one of the steering column shaft and the steering input device. A column adjustment assembly configured to translate the steering column shaft between a retracted position and a driving position is also included. Also included is at least one signal indicating whether the steering column shaft is in the retracted position or the driving position, and when the steering column shaft is in the retracted position, directional control of the vehicle is automated and the energy absorbing mechanism is in an inoperable state, and when the steering column shaft is returned to the driving position indicated by the at least one signal, the energy absorbing mechanism is in an operable state.
Description
Cross Reference to Related Applications
This patent application is a partial continuation of U.S. patent application serial No.14/989,153 filed on day 6/1/2016, claiming priority to U.S. provisional patent application serial No.62/174,114 filed on day 11/6/2015, both of which are incorporated herein by reference in their entirety.
Technical Field
The following description relates to steering column assemblies and, more particularly, to a telescoping steering column assembly.
Background
Vehicle steering wheels are commonly used to steer vehicles. When the vehicle is equipped with an autonomous driving assistance system ("ADAS"), the steering wheel does not need to be rotated since the wheels are turned by the autonomous driving system. This non-rotation allows the steering column and steering wheel to have other uses or purposes.
Accordingly, it is desirable to provide a steering column assembly that enables a driver to manipulate the position or purpose of the steering wheel.
Disclosure of Invention
According to one embodiment of the present disclosure, a steering column system includes a steering column shaft. A steering input device coupled to the steering column shaft is also included. An energy absorbing mechanism is also included that is operably engaged with at least one of the steering column shaft and the steering input device. A column adjustment assembly configured to translate the steering column shaft between a retracted position and a driving position is also included. Also included is at least one signal indicating whether the steering column shaft is in the retracted position or the driving position, and when the steering column shaft is in the retracted position, directional control of the vehicle is automated and the energy absorbing mechanism is in an inoperable state, and when the steering column shaft is returned to the driving position indicated by the at least one signal, the energy absorbing mechanism is in an operable state.
According to another embodiment of the present disclosure, a vehicle includes a steering column shaft. A steering input device coupled to the steering column shaft is also included. An energy absorbing mechanism is also included that is operably engaged with at least one of the steering column shaft and the steering input device. A column adjustment assembly configured to translate the steering column shaft between a retracted position and a driving position is also included. Also included is at least one signal indicating whether the steering column shaft is in the retracted position or the driving position, and when the steering column shaft is in the retracted position, directional control of the vehicle is automated and the energy absorbing mechanism is in an inoperable state, and when the steering column shaft is returned to the driving position indicated by the at least one signal, the energy absorbing mechanism is in an operable state.
According to yet another embodiment of the present disclosure, a method of operating a steering column assembly of a vehicle. The method includes translating the steering column shaft from a retracted position toward an extended, driving position. The method also includes sending at least one signal from the steering column shaft component to the controller when the steering column shaft is in the extended, driving position. The method further includes engaging the energy absorbing mechanism to be operable when the steering column shaft is in the extended, driving position indicated by the at least one signal, and rendering the energy absorbing mechanism inoperable when the steering column shaft is in the retracted position and when transitioning between the retracted position and the extended, driving position.
Preferably, the driver of the vehicle provides directional control in an extended, driving position.
Preferably, the vehicle comprises an autonomous travel-assisted steering system, the method further comprising: when the steering column shaft moves from the extended, driving position, the autonomous travel assist steering system is activated to provide directional control.
These and other advantages and features will become more apparent from the following description taken in conjunction with the accompanying drawings.
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 will be apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a vehicle and steering column assembly according to one embodiment of the present disclosure;
fig. 2A and 2B show a flow chart demonstrating operation of a vehicle and steering column assembly according to one embodiment of the present disclosure.
Detailed Description
A detailed description of one or more embodiments of the disclosed systems and methods is presented herein by way of example and not limitation with reference to the figures.
Referring now to the drawings, wherein embodiments will be described, and not by way of limitation, FIG. 1 schematically illustrates an embodiment of a vehicle 10, such as an autonomous Driving Assist steering ("ADAS") equipped vehicle, generally having an instrument panel 12 and a telescoping steering column assembly 14. The steering column assembly 14 generally includes a steering column shaft 16 and a steering input device, such as a steering wheel 18, coupled to the steering column shaft.
In the illustrated embodiment, the steering column assembly 14 is movable between a retracted position 20, a deployed or steering position 22, and an attached or utility position 24. In the retracted position 20, portions of the assembly 14 (such as the steering wheel 18) are disposed away from the driver toward the instrument panel 12 or into the instrument panel 12, which provides increased space for the driver. In the illustrated embodiment, the instrument panel 12 includes one or more receiving bays or areas 26 to receive some or all of the steering column assembly 14. For example, the receiving area 26 may be configured to receive the steering wheel 18 such that the steering wheel 18, and thus the assembly 14, may be stowed within the instrument panel 12 and flush with the instrument panel 12. In such an embodiment, the steering column assembly 14 is stowable, however, the distance the assembly 14 retracts may vary. The displacement of the steering column shaft 16 and steering wheel 18 to the retracted position 20 creates additional cabin space for the driver's comfort and facilitates performance of non-driving activities, including, but not limited to, reading, working, entertaining, eating, messaging, etc.
In the drive position 22, the steering wheel 18 may be used by the driver to steer the vehicle. In the accessory position 24, portions of the assembly 14 (such as the steering wheel 18) may be used for non-driving activities such as reading, working, or other forms of entertainment. Thus, at least a portion of the steering wheel 18 is configured to be non-rotatable so that a computer or book-like object can be placed thereon. Further, at least a portion of the steering wheel 18 may pivot relative to the steering column shaft 16 (reducing the angle between the steering column shaft 16 and the portion of the steering wheel 18) to form a work area. For example, a table or work surface 28 may be coupled to the steering wheel 18 or integrated with the steering wheel 18 to enable such activities. Alternatively, only the rim or hub of the steering wheel is non-rotatable and includes an attachment, such as a hook, to support the work surface 28. In other embodiments, electronics, etc. are integrated into the stationary steering wheel 18 or the work surface 28. In the accessory position 24, the steering wheel 18 may also be moved as needed to bring the work surface 28 closer to the driver.
In one embodiment, the steering column assembly 14 further includes a steering column adjustment assembly 30, a disconnect assembly 32, a torque interface assembly 34, and one or more sensors 36. The adjustment assembly 30 is configured to move the steering column assembly 14 for driver comfort (e.g., telescoping or pitch adjustment) and to move the assembly 14 between the retracted position 20 and the driving position 22. The adjustment assembly 30 may include one or more mechanical/electrical mechanisms, such as a motor. The adjustment assembly 30 may also include a retraction mechanism that enables the driver to mechanically, electrically, or manually return the steering wheel 18 from the retracted position 20 to the driving position 22.
In the drive position 22, the steering gear 44 couples rotation of the steering wheel 18 to rotation of the wheels 46. The steering gear 44 may be mechanically connected to the steering column shaft 16, or alternatively may be electrically connected to the steering column shaft 16, such as in a "steer-by-wire" system. In one embodiment, the disengagement assembly 32 is configured to selectively disengage one or more portions of the assembly 14 (e.g., the shaft 16) from the vehicle steering gear 44 such that the steering wheel 18 is in a non-rotatable mode, thereby removing the ability of the steering wheel 18 to control the direction of the wheels 46 via the steering gear 44. For example, the disconnect assembly 32 may be mechanically or electrically activated by a clutch or by steer-by-wire, or reversed by a servo actuator. Alternatively or additionally, the assembly 32 may provide a counter-rotation to the steering wheel 18 to counteract any rotation of the steering wheel 18 caused by the autonomous driver assist steering system such that the steering wheel 18 acts and appears to be non-rotatable. The decoupling assembly 32 need not be positioned along the shaft 16 and may be located elsewhere for mechanically and/or electrically decoupling the shaft 16 from the steering gear 44.
In addition, the disconnect assembly 32 allows the steering column shaft 16 and the steering wheel 18 to be displaced forward in the vehicle 10 to the retracted position 20 because the steering wheel 18 is no longer being used by the driver to guide the vehicle 10. The retraction action may be accomplished, for example, by a long stroke electric actuator responding to the driver's intent through a switch and motor controller, or by the driver manually releasing a clamp and pushing the steering wheel 18 and column shaft 16 forward to the retracted position 20. In any event, the embodiments described herein enable the steering column shaft 16 and steering wheel 18 to be retracted away from the driver, thereby providing space for non-driving related activities such as working, reading, or playing games.
In the exemplary embodiment, torque interface assembly 34 is configured to detect and monitor driver torque inputs (rotational and translational) to steering wheel 18, for example, to determine whether the driver is controlling the vehicle. The sensors 36 are configured to detect and monitor operator compartment conditions, operator conditions, vehicle environment, and/or vehicle control systems. For example, the sensor 36 may: detecting objects between the retracted steering wheel 18 and the driver that may cause unsafe conditions for the driver to safely re-control the vehicle; detecting whether the driver is not in a position to safely resume control of the vehicle; and/or detecting undesirable vehicle dynamics that require the driver to regain control of the vehicle. The ADAS system 98 knows the fore-aft position of the steering column shaft 16 and steering wheel 18, whether in the retracted position 20, the deployed/driving position 22, or the attached/utility position 24, by one or both of the torque interface assembly 34 and the sensor 36, which may be located on the steering column shaft 16 or the steering wheel 18. The sensor may include, but is not limited to, a switch or a potentiometer.
The retraction or stowing process that moves the steering column shaft 16 and steering wheel 18 from the drive position 22 (or the attachment/utility position 24) to the retracted position 20 must eventually be reversed to resume the driver's steering control of the vehicle 10. That is, the driver should be able to reach forward, hold onto the steering wheel 18, and be able to relatively quickly bring the steering wheel 18 to the driving position 22 to resume steering of the vehicle 10. To restore steering of the vehicle 10, the steering column shaft 16 is mechanically and/or electrically reconnected to the steering gear 44. This reconnection may be accomplished by disconnect assembly 32 such that disconnect assembly 32 is actually a steering wheel coupler/decoupler. When returning to the driving position 22, the steering column 16 and steering wheel 18 are fixed (at least temporarily), such as by a disconnect assembly 32 and/or a deactivatable, bi-directional lock 38 in a fore-aft position in the driving position 20. When secured in the driving position 20, the vehicle 10 provides the ability to reduce the kinetic energy of the driver (such as may be generated by an impact) via the energy absorbing mechanism 40 in the steering column shaft 16, deformation of the steering wheel 18, and deployment of the driver's airbag 42. The airbag 42 is also capable of absorbing energy in the deployed condition of the airbag 42.
Referring now to fig. 2A and 2B, an embodiment of an operation 100 of the vehicle 10 is shown. Beginning with fig. 2A, the start 104 of the operation may be evaluated by the controller 102 of the ADAS system (shown diagrammatically at 98 in fig. 1). The controller 102 may receive information (signals) from, but is not limited to, one or more of the following: steering column adjustment assembly 30, disconnect assembly 32, torque interface assembly 34, sensor 36, bi-directional lock 38, and any other features within vehicle 10 that may communicate with controller 102. As illustrated by block 106, the operation 100 will determine whether the ADAS switch of the ADAS system 98 is open, such as by driver input to begin the ADAS mode. When the ADAS switch is not open, then the driver provides directional control as shown in block 108. As illustrated by block 110, the energy absorbing mechanism 40and the air bag 42(E/a) are rendered operable (the air bag 42 is ready for deployment if needed).
When the ADAS switch is open, then, as illustrated by block 112, the ADAS system 98 provides directional control and renders the energy-absorbing mechanism 40and the airbag 42 inoperable (i.e., the airbag 42 is not ready for deployment). As illustrated by block 114, the controller 102 also determines whether the steering column shaft 16 has been disengaged, such as by the disengagement assembly 32. If not, the driver does not hold the steering wheel 18 in order to continue ADAS control, as shown in block 116 (otherwise, the ADAS switch will close due to driver input through the steering wheel 18, the steering column shaft 16 will remain coupled to the steering gear 44, and the driver will provide control). If the steering column shaft 16 is disengaged, rotation of the steering wheel 18 stops as illustrated by block 118. The rotationally fixed steering wheel 18 allows for non-steering use of the steering column shaft 16 and steering wheel 18, as illustrated by block 120.
At some point during the operation 100, the driver may wish to retract the steering wheel 18. As illustrated by block 122, the controller 102 will determine whether the steering column shaft 16 and steering wheel 18 are fully retracted during a retraction operation to the position 20, such as by receiving a position-related signal from the steering column adjustment assembly 30 or any of the sensors 36. If not, the driver will not hold the steering wheel 18, as shown in block 124. However, if the steering column shaft 16 and steering wheel 18 are retracted to the retracted position 20, as illustrated by block 126, cabin space within the vehicle 10 is expanded, as illustrated by block 128, and the ADAS system 98 learns the position of the steering column 16, such as by the controller 102 and at least one sensor that may be in communication with the controller 102.
Referring now to fig. 2B (a continuation of the operation 100 shown in fig. 2A), as the cabin space expands (block 126 of fig. 2A), non-driving activity can be achieved as illustrated by block 130. During operation 100, the controller 102 will further determine (as shown by block 132) whether the driver has gripped the steering wheel 18. If the driver is not holding the steering wheel 18, the ADAS system 98 will continue to provide directional control as shown in block 134. However, if the driver has gripped the steering wheel 18, the ADAS system 98 is ready to disengage, as illustrated by block 136. As illustrated by box 138, the steering column shaft 16 begins to elongate. The elongation of the steering column shaft 16 may be accomplished by the driver and/or by automatic elongation in response to driver input. As shown in block 104, the controller 102 will determine whether the steering column shaft 16 is fully extended. If the steering column shaft 16 is not fully extended to the driving position 22, the ADAS system 98 will continue to provide directional control for the vehicle 10 and the energy absorbing mechanism 40and air bag 42 cannot deploy, as illustrated by block 142. However, if the steering column shaft 16 is fully extended, the driver provides directional control via the steering wheel 18, as illustrated by block 144, and causes the steering column energy absorbing mechanism 40and the air bag 42(E/a) to be operable (with the air bag 42 ready for deployment if desired), as illustrated by block 146. Full extension of the steering column shaft 16 may be determined by the controller 102, for example, by actuation of the lock 38 or information from the disconnect assembly 32 or the steering column adjustment assembly 30.
Thus, when the steering column shaft 16 is extended to the driving position 22 and the driver is providing directional control 108 of the vehicle 10, the operation 100 ensures that the steering column energy-absorbing mechanism 40and the air bags 42 are operable and activatable, if desired.
The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Further, it should also be noted that the terms "first," "second," and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The modifier "about" used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (e.g., it includes the degree of error associated with measurement of the particular quantity).
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 disclosure. 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.
FIG. 2A
YES is
NO of
104 start to
106 ADAS switch open?
108 driver-provided directional control
110 columns E/A and the air bag is fully effective
112 ADAS system provides directional control
114 disengaging the steering shaft?
116 driver hands-free steering wheel
118 steering wheel rotation stop
120 allow non-steering use of the column and steering wheel
122 retracting post and steering wheel
124 driver hands-free steering wheel
126 compartment space enlargement
128 ADAS learning of column position
FIG. 2B
130 non-driving activities can be implemented
132 driver holding steering wheel?
134 ADAS continue to provide directional control
136 ADAS preparation for disengagement
138 column begins to elongate
140 column is fully extended?
142 ADAS continues to provide directional control
144 driver provides directional control
146 column E/A and airbag enabled
Claims (14)
1. A steering column system comprising:
a steering column shaft;
a steering input device coupled to a steering column shaft;
an energy absorbing mechanism operably engaged with at least one of the steering column shaft and the steering input device;
a column adjustment assembly configured to translate the steering column shaft between a retracted position and a driving position; and
at least one signal indicating whether the steering column shaft is in a retracted position or a driving position, and when the steering column shaft is in the retracted position indicated by the at least one signal, directional control of the vehicle is automated and the energy absorbing mechanism is not engaged such that the energy absorbing mechanism is in an inoperable state and the airbag is not ready to deploy, when the steering column shaft is not fully extended to the driving position and the at least one signal does not indicate the driving position, directional control of the vehicle is still automated and the energy absorbing mechanism is not engaged such that the energy absorbing mechanism is in the inoperable state and the airbag is not ready to deploy, and when the steering column shaft is returned to the driving position indicated by the at least one signal, the energy absorbing mechanism is engaged such that the energy absorbing mechanism is in an operable state and the airbag is ready to deploy.
2. The steering column system of claim 1, further comprising: a decoupling assembly configured to decouple the steering input device from the steering gear, the decoupling assembly providing the at least one signal.
3. The steering column system of claim 1, further comprising: a torque interface assembly configured to detect a torque input into the steering input device.
4. The steering column system of claim 1, further comprising: at least one sensor configured to monitor at least one of: driver cabin conditions, driver conditions, vehicle environment, and vehicle control systems.
5. The steering column system of claim 1, further comprising: a decoupling assembly configured to decouple the steering input device from the steering gear, wherein at least a portion of the steering input device is non-rotatable in a decoupled condition of the steering input device.
6. The steering column system of claim 4, further comprising a work surface coupled to or integrated with the steering input device.
7. A vehicle, comprising:
a steering column shaft;
a steering input device coupled to a steering column shaft;
an energy absorbing mechanism operably engaged with at least one of the steering column shaft and the steering input device;
a column adjustment assembly configured to translate the steering column shaft between a retracted position and a driving position; and
at least one signal indicating whether the steering column shaft is in the retracted position or the driving position, and when the steering column shaft is in the retracted position indicated by the at least one signal, directional control of the vehicle is automated and the energy absorbing mechanism is not engaged such that the energy absorbing mechanism is in the inoperable state and the airbag is not ready to deploy, when the steering column shaft is not fully extended to the driving position and the at least one signal is not indicative of the driving position, directional control of the vehicle is still automated and the energy absorbing mechanism is not engaged such that the energy absorbing mechanism is in the inoperable state and the airbag is not ready to deploy, and when the steering column shaft is returned to the driving position indicated by the at least one signal, the energy absorbing mechanism is engaged such that the energy absorbing mechanism is in the operable state and the airbag is ready to deploy.
8. The vehicle of claim 7, further comprising: an autonomous travel assisted steering system having a controller configured to receive at least one signal.
9. The vehicle of claim 7, further comprising an instrument panel including at least one receiving compartment configured to receive at least a portion of the steering column assembly when the steering column assembly is in the retracted position.
10. The vehicle of claim 7, further comprising a steering gear and a disconnect assembly configured to disconnect the steering input device from the steering gear, the disconnect assembly providing the at least one signal.
11. A method of operating a steering column assembly of a vehicle, the method comprising:
translating the steering column shaft from the retracted position toward the extended, driving position;
transmitting at least one signal from the steering column shaft component to the controller when the steering column shaft is in the extended, driving position;
the energy-absorbing mechanism is engaged such that the energy-absorbing mechanism is operable and the airbag is ready to deploy when the steering column shaft is in the protracted, driving position indicated by the at least one signal, and is not engaged such that the energy-absorbing mechanism is in the inoperable state and the airbag is not ready to deploy when the steering column shaft is in the retracted position indicated by the at least one signal, and is not engaged such that the energy-absorbing mechanism is inoperable and the airbag is not deployable when transitioning between the retracted position and the protracted, driving position and the at least one signal does not indicate the driving position.
12. The method of claim 11, further comprising: the steering column shaft is recoupled with the steering gear when the steering column shaft is in the extended, driving position.
13. The method of claim 11, wherein the vehicle includes an autonomous travel assist steering system, the method further comprising: the autonomous travel assist steering system is allowed to provide directional control before the steering column shaft is in the extended, driving position.
14. The method of claim 11, further comprising:
translating the steering column shaft from an extended, driving position to a retracted position;
at least one signal is sent from the steering column shaft component to the controller when the steering column shaft is in the retracted position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/993,083 US11560169B2 (en) | 2015-06-11 | 2018-05-30 | Retractable steering column system and method |
| US15/993,083 | 2018-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110550089A CN110550089A (en) | 2019-12-10 |
| CN110550089B true CN110550089B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910461933.3A Active CN110550089B (en) | 2018-05-30 | 2019-05-30 | Telescoping steering column system and method |
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| CN (1) | CN110550089B (en) |
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| JP5967309B2 (en) * | 2013-07-23 | 2016-08-10 | 日産自動車株式会社 | Vehicle driving support apparatus and vehicle driving support method |
| DE102014004570B4 (en) * | 2014-03-28 | 2018-10-31 | Audi Ag | Occupant protection device for a vehicle |
| US9828016B2 (en) * | 2015-06-24 | 2017-11-28 | Steering Solutions Ip Holding Corporation | Retractable steering column system, vehicle having the same, and method |
| US9994178B2 (en) * | 2016-05-17 | 2018-06-12 | Autoliv Asp, Inc. | Displaceable steering wheel safety systems and related methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6070686A (en) * | 1995-06-27 | 2000-06-06 | Robert Bosch Gmbh | Steering wheel mount for a steering wheel of a vehicle |
| JP2010269793A (en) * | 2003-09-25 | 2010-12-02 | Nsk Ltd | Electric power steering device |
| CN106314524A (en) * | 2015-06-11 | 2017-01-11 | 操纵技术Ip控股公司 | Retractable steering column system, vehicle having the same, and method |
| CN107416008A (en) * | 2016-04-13 | 2017-12-01 | 法拉第未来公司 | The system and method for making steering wheel for vehicle retract and stretch out automatically |
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| CN110550089A (en) | 2019-12-10 |
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