Patent Application
20250083600
The present disclosure relates to a method for moving at least one rearview device of at least one rearview assembly around at least one first axis and around at least one second axis, by at least one actuator comprising at least one electrically driven first drive device and at least one electrically driven second drive device and to an actuator for moving, in particular folding and/or adjustment, of at least one rearview device, in particular an actuator for moving at least one rearview device around at least one first axis and around at least one second axis, the actuator comprising at least one electrically driven first drive device and at least one electrically driven second drive device.
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
Vehicles are mandated by safety regulation to have a rearview system comprising at least on rearview assembly that is operable to provide a driver of the vehicle a rearward field of view. The rearview assembly typically includes one or more components that are required to be actuated relative to the vehicle body along a first axis, such components may include mirrors or cameras. As an example, the actuation of components along a first axis may provide the driver of the vehicle the ability to fine tune the rearward field of view provided by the rearview assembly.
Further, some rearview assemblies provide actuation of one or more components along a second axis, such components may include mirrors or cameras. As an example, the actuation of components along a secondary axis allows the components to be stored closer to the vehicle body in certain conditions. Generally, actuation of components in a rearview assembly along a secondary axis is achieved using a secondary actuator.
For example rearview assemblies comprise a mirror base and a mirror head, wherein within the mirror head a mirror plate mounted on a glass actuator is located. This glass actuator adjusts the mirror to move the mirror to the desired position. In addition the mirror head can be moved relative to the mirror base into a use position and into a stowed position.
The mirror plate moves within a bezel frame incorporated in the mirror head. Between the mirror plate and bezel is a gap to allow movement of the mirror plate, this gap leads to aerodynamic drag during driving. Gaps between the external mirror components also contribute to this drag.
It is thus desirable to have a frameless external rearview device that mounts the rearview device, like a mirror or a camera, on the front of the mirror housing and adjusts the complete rearview head to the desired position. By mounting the rearview device in a fixed position relative to the rearview head, there is no gap between the rearview device and the bezel. Therefore, drag is reduced improving airflow and fuel efficiency of the vehicle. The design also permits fewer components in the rearview head housing, reducing gaps in the external surface, further reducing drag.
On a frameless external rearview device, the two separate actuator approach of a glass actuator and powerfold used in conventional mirrors would not be suitable for a frameless mirror design due to the necessary ranges of movement of more than 20 annual degrees compared to about 8 annual degrees used in glass actuators. Although such ranges of movement in predefined time ranges can be reached by using additional gearboxes such gearboxes lead to noisy, heavy, and large in size actuators thereby making the actuators costlier. Furthermore such actuators do not provide sufficient torque to move the rearview head.
When using drive devices providing a sufficient movement velocity and sufficient torque have an increased power consumption. However the power supply provided for the actuator by the energy supply system of the vehicle. In a specific example the drive device has a power draw of 2 A, in particular in a stalling condition leading to a power consumption of a maximum of 4 A when actuating both drive devices, whereas the vehicle provides outputs for the powerfold actuator and the glass actuator, respectively of a maximum of 3 A.
This leads to the need of an improved method and improved actuator for moving such a rearview device.
To improve the method the present disclosure provides thus a method for moving at least one rearview device of at least one rearview assembly around at least one first axis and around at least one second axis, by at least one actuator comprising at least one electrically driven first drive device and at least one electrically driven second drive device, wherein the method comprises controlling the first drive device and the second drive device such that only one of the drive devices is driven at a time.
For the method it is proposed that the method comprises providing at least one circuitry connected at least indirectly to the first drive device and the second drive device for controlling the first drive device and the second drive device, wherein the circuitry is connectable to the actuator and/or the circuitry is at least partly comprised by the actuator.
It proposed that based on a first signal a power supply is switched between the first drive device and the second drive device and/or based on a second signal the polarity provided to the first drive device and the second drive device is switched.
In the before described embodiment it is preferred that the first signal is provided to a first input of the circuitry and the second signal is provided to a second input of the circuitry.
A method might be further characterized in that the first signal is provided by at least one first power source, wherein preferably the first signal, especially provided to the first input, is at least partly formed by the output of the first power source with a first polarity to switch the power supply to the first drive device and/or the first signal, especially provided to the first input, is at least partly formed by the output of the first power source with a second polarity being opposite to the first polarity to switch the power supply to the second drive device.
Also it is preferred that the second signal is provided by at least one second power source, wherein preferably the second signal, especially provided to the second input, is at least partly formed by the output of the second power source with a first polarity to run the first drive device in a first direction or the second drive device in a third direction and/or the second signal, especially provided to the second input, is at least partly formed by the output of the second power source with a second polarity being opposite to the first polarity to run the first drive device in a, in particular to the first direction opposite, second direction or to run the second drive device in a, in particular to the third direction opposite, fourth direction.
It is furthermore preferred that by the circuitry, in particular with the help of at least one first power source, a power supply is switched between the first drive device and the second drive device and/or by the circuitry the chosen drive device is provided with energy of at least one second power source to move the rearview device.
It is also proposed that the first power source provides the circuitry with a smaller maximum electrical output than the second power source.
Alternatively it is proposed that the second power source provides the circuitry with a smaller maximum electrical output than the first power source.
Advantageous embodiments of the method might be characterized in that in a first status of a first switch the first power source is coupled to a first subsection of the circuitry connected to the first drive device with a first polarity and to a second subsection of the circuitry connected to the second drive device with a second polarity and in a second status of the first switch the first power source is connected with the second polarity to the first subsection and with the first polarity to the second subsection.
Furthermore it is proposed in the before described embodiment that at least one electronic element, in particular at least one diode, located in the first subsection or the second subsection is driven in a blocking direction when the respective subsection is connected with the first polarity to the first power source and is driven in a pass direction when the respective subsection is connected with the second polarity to the first power source.
Furthermore the method might be characterized in that in a first status of a second switch the second power source is coupled to the first subsection connected to the first drive device with a first polarity and to the second subsection connected to the second drive device with a second polarity and in a second status of the second switch the second power source is coupled to the first subsection with the second polarity and to the second subsection with the first polarity.
It is preferred that (i) in the first status of the first switch and the first status of the second switch the first drive device is driven in a first direction and/or in the first status of the first switch and the second status of the second switch the first drive device is driven in a, preferably with respect to the first direction opposite, second direction, wherein especially the second drive is not driven in the first status of the first switch and/or (ii) in the second status of the first switch and the first status of the second switch the second drive device is driven in a third direction and/or in the second status of the first switch and the second status of the second switch the second drive device is driven in a, preferably with respect to the third direction opposite, fourth direction, wherein especially the first drive is not driven in the second status of the first switch.
Finally it is proposed for the method that the first direction of the first drive device corresponds to a movement of the rearview device around the first axis in a first direction, the second direction of the first drive device corresponds to a movement of the rearview device around the first axis in a second direction, the first direction of the second drive device corresponds to a movement of the rearview device around the second axis in a third direction and the fourth direction of the second drive device corresponds to a movement of the rearview device around the second axis in a fourth direction and/or the first axis corresponds to a tilt axis of the rearview device and/or the second axis corresponds to a fold axis of the rearview device.
Furthermore an improved circuitry connectable to at least one actuator for moving at least one rearview device around at least one first axis and around at least one second axis, is proposed wherein the actuator comprises at least one electrically driven first drive device and at least one electrically driven second drive device, and wherein the circuitry is configured to move the rearview device according to a method as described before and/or claimed with the enclosed claims.
It is proposed that the circuitry is connected at least indirectly to the first drive device and the second drive device for controlling the first drive device and the second drive device.
It is also proposed that the circuitry is connected at least indirectly, preferably via at least one vehicle module, like a door zone module, a control module, a vehicle bus module and/or a control area network bus module, to at least one first power source and/or at least one second power source.
It is preferred that the circuitry comprises at least one first input, wherein preferably at least one first signal can be provided to the first input, wherein especially by the first signal a power supply is switched between the first drive device and the second drive device, and/or the circuitry comprises at least one second input, wherein preferably at least one second signal can be provided to the second input, wherein especially by the second signal the polarity provided to the first drive device and/or the second drive device is switched.
Furthermore it is proposed that the first signal is provided by the first power source, wherein preferably the first signal is at least partly formed by the output of the first power source with a first polarity to switch the power supply to the first drive device and/or the first signal is at least partly formed by the output of the first power source with a second polarity being opposite to the first polarity to switch the power supply to the second drive device.
In the before described embodiments optionally the second signal is provided by at least one second power source, wherein preferably the second signal is at least partly formed by the output of the second power source with a first polarity to run the first drive device in a first direction or the second drive device in a third direction and/or the second signal is at least partly formed by the output of the second power source with a second polarity being opposite to the first polarity to run the first drive device in a, in particular to the first direction opposite, second direction or to run the second drive device in a, in particular to the third direction opposite, fourth direction.
The circuitry and/or the first drive device might comprises at least one first drive device driver to control at least one actuator or motor of the first drive device and/or the circuitry and/or of the second drive device comprises at least one second drive device driver to control at least one actuator or motor of the second drive device.
In the before described embodiments of the circuitry it is preferred that the circuitry comprises at least one first switch, preferably at least partly comprised by the vehicle module, to connect a first power supply to the first drive device and the second drive device.
Furthermore it is proposed that the circuitry comprises at least one first subsection connected to the first drive device and at least one second subsection connected to the second drive device, wherein in at least one first status of the first switch the first power source is coupled to the first subsection with a first polarity and to the second subsection with a second polarity and in at least one second status with the second polarity to the first subsection and with the first polarity to the second subsection.
The circuitry might be characterized in that the circuitry, in particular the first subsection and/or the second subsection, comprises at least one electronic element, in particular at least one diode, wherein the electronic element is driven in a blocking direction when the respective subsection is connected with the first polarity to the first power source and is driven in a pass direction when the respective subsection is connected with the second polarity to the first power source.
Also it is proposed that the circuitry comprises at least one second switch, wherein in a first status of the second switch the second power source is coupled to the first subsection with a first polarity and to the second subsection with a second polarity and in a second status of the second switch the second power source is coupled to the first subsection with the second polarity and to the second subsection with the first polarity.
In addition the circuitry might be characterized in that (i) in the first status of the first switch and the first status of the second switch the first drive device is driven in a first direction and/or in the first status of the first switch and the second status of the second switch the first drive device is driven in a, preferably with respect to the first direction opposite, second direction, wherein especially the second drive device is not driven in the first status of the first switch and/or (ii) in the second status of the first switch and the first status of the second switch the second drive device is driven in a third direction and/or in the second status of the first switch and the second status of the second switch the second drive device is driven in a, preferably with respect to the third direction opposite, fourth direction, wherein especially the first drive device is not driven in the second status of the first switch.
Furthermore an actuator for moving at least one rearview device around at least one first axis and around at least one second axis is proposed, wherein the actuator comprises at least one electrically driven first drive device and at least one electrically driven second drive device, wherein the actuator is connectable or connected to and/or at least partly comprises a circuitry according to one of the before described embodiments and/or the actuator is configured to move the rearview device according to a method of one of the before described embodiments
Additionally the actuator might have the additional features that the first axis and the second axis are running at angle to each other, in particular the first axis and the second axis are running perpendicular to each other.
Furthermore it is proposed that the first drive device and/or the second drive device comprise at least one DC motor.
It is also proposed that the actuator, in particular the circuitry, comprises at least one sensing device, preferably at least indirectly connected to the vehicle module, wherein by the sensing device at least one first parameter of the first drive device and/or at least one second parameter of the second drive device is determinable.
In the before described embodiment it is preferred that the first parameter and/or the second parameter comprises at least one position, at least one moving direction, at least one moving speed and/or at least one acceleration of the first drive device and/or the second drive device.
Additionally it is preferred that the actuator comprises at least one gear assembly having a secondary tilt gear and a secondary fold gear; wherein said secondary tilt gear comprises a first spur gear portion, a first worm gear portion, and a first transition point, wherein said first transition point divides said secondary tilt gear into said first spur gear portion and said first worm gear portion; wherein said first worm gear portion comprises a first end having a first diameter and a second end having a second diameter, wherein said first end is disposed adjacent to said first transition point of said secondary tilt gear and, wherein said second end is disposed opposite of said first end, and wherein said first diameter is larger than said second diameter; wherein said secondary fold gear comprises a second spur gear portion, a second worm gear portion, and a second transition point, wherein said second transition point divides said secondary fold gear into said second spur gear portion and said second worm gear portion; wherein said second worm gear portion comprises a third end having a third diameter and a fourth end having a fourth diameter, wherein said third end is disposed adjacent to said second transition point of said secondary fold gear and, wherein said fourth end is disposed opposite of said third end, and wherein said third diameter is larger than said fourth diameter; and wherein said second worm gear portion and said second spur gear portion are formed as a single element.
A further preferred embodiment might be characterized in that wherein said secondary fold gear comprises a cavity.
In the before described embodiments of the actuator it is preferred that the gear assembly further comprises a biasing element and a worm insert, wherein the biasing element is received into said cavity of said secondary fold gear such that said worm insert is movably received in said cavity and abutted against said biasing element.
Advantageous embodiments of the actuator might have the features that the actuator comprises at least one gear assembly having: a secondary tilt gear comprising an aperture; a secondary fold gear comprising an aperture and a cavity; a spindle having a first end and a second end; a biasing element; a worm insert; a slide having a channel; wherein said aperture of said secondary tilt gear receives said first end of said spindle; wherein said slide is attached to said spindle by fitting said channel onto said spindle, and wherein said slide is arranged adjacent to said secondary tilt gear; wherein said biasing element is arranged to be received inside of said cavity of said secondary fold gear; wherein said worm insert is arranged to be received inside of said cavity of said secondary fold gear; wherein said biasing element is received into said cavity of said secondary fold gear such that said worm insert is movably received in said cavity and abutted against said biasing element.; and wherein said aperture of said secondary fold gear receives said second end of said spindle.
For the before described embodiment it is proposed that said biasing element exerts a biasing force against said worm insert; and wherein said biasing force biases said slide towards said secondary tilt gear.
It is also preferred that said secondary tilt gear further comprises a first spur gear portion, a first worm gear portion, and a first transition point, wherein said first transition point divides said secondary tilt gear into said first spur gear portion and said first worm gear portion; wherein said first worm gear portion comprises a first end having a first diameter and a second end having a second diameter, wherein said first end is disposed adjacent to said first transition point of said secondary tilt gear and, wherein said second end is disposed opposite of said first end, and wherein said first diameter is larger than said second diameter; wherein said secondary fold gear further comprises a second spur gear portion, a second worm gear portion, and a second transition point, wherein said second transition point divides said secondary fold gear into said second spur gear portion and said second worm gear portion; wherein said second worm gear portion comprises a third end having a third diameter and a fourth end having a fourth diameter, wherein said third end is disposed adjacent to said second transition point of said secondary fold gear and, wherein said fourth end is disposed opposite of said third end, and wherein said third diameter is larger than said fourth diameter; and wherein said second worm gear portion and said second spur gear portion are formed as a single element.
An actuator according to one of the before described embodiments might be characterized in that the rearview assembly has a rearview head and a rearview base, wherein preferably the rearview head comprises at least one mirror device and/or at least one camera device and/or the rearview head is moved relative to the mirror base by the actuator.
It is furthermore preferred that a fold drive comprises the first drive device, wherein preferably the fold drive is operable to rotate said rearview head in the first direction about the first axis relative to said rearview base and rotate said rearview head in the second direction about said first axis; a tilt drive comprises the second drive device, wherein preferably the tilt drive is operable to rotate said rearview head in the third direction about the second axis relative to said rearview base and rotate said rearview head in the fourth direction about said second axis relative to said rearview base.
Additionally it is proposed that the rotation of said secondary fold gear in a first secondary fold gear direction results in said fold drive rotating said rearview head in said first direction about said first axis and wherein the rotation of said secondary fold gear in a second secondary fold gear direction results in said fold drive rotating said rearview head in said second direction about said first axis; and wherein the rotation of said secondary tilt gear in a first secondary tilt gear direction results in said tilt drive rotating said rearview head in said third direction about said second axis and wherein the rotation of said secondary tilt gear in a second secondary tilt gear direction results in said tilt drive rotating said rearview head in said fourth direction about said second axis.
The present disclosure furthermore describes that said secondary fold gear may rotate as said secondary tilt gear remains stationary.
A further embodiment might be characterized in that said secondary tilt gear may rotate as said secondary fold gear remains stationary.
It is also proposed that said secondary fold gear may rotate as said secondary tilt gear rotates.
An actuator according to one of the before described embodiments might be characterized in that said actuator comprises: a primary fold gear; and a secondary fold gear; said primary fold gear comprising a plurality of extensions extending radially inward from an inner circumference of said primary fold gear; and a first set of teeth; wherein a distance between each of said plurality of extensions is uniformly arranged around said inner circumference; and wherein said plurality of extensions further comprises a first taper; said secondary fold gear having a second set of teeth; and wherein said first set of teeth of said primary fold gear mesh with said second set of teeth of said secondary fold gear such that said first set of teeth and said second set of teeth have a first spacing.
For the before described embodiment it is preferred that said actuator further comprises: a gear seat arranged adjacent to said primary fold gear; wherein said gear seat has a second taper; and wherein said first taper of said primary fold gear contacts said second taper of said gear seat.
For this embodiment it is additionally proposed that a spring operable to apply a biasing force to said primary fold gear such that said primary fold gear is biased towards said gear seat; and wherein a deformation of the primary fold gear occurs when said primary fold gear is biased towards said gear seat.
It is also preferred that said deformation of said primary fold gear modifies the first spacing between said first set of teeth of said primary fold gear and said second set of teeth of said secondary fold gear to a second spacing; wherein said first spacing is different than said second spacing.
A preferred actuator might be characterized by a secondary tilt gear comprising a spur gear portion, a worm gear portion, and a transition point; wherein said transition point divides said secondary fold gear into said spur gear portion and said worm gear portion; and wherein said worm gear portion comprises a second set of teeth.
An actuator can further comprise: a gear assembly comprising a primary tilt gear, a spindle and a carrier arranged on said spindle wherein said carrier comprises a slot; wherein said primary tilt gear comprises a carrier connector receivable in said slot of said carrier; wherein said primary tilt gear may rotate in a first tilt direction or a second tilt direction; and wherein said carrier is slidable in a first translation direction along said spindle when the primary tilt gear rotates in said first tilt direction; and said carrier is slidable in a second translation distance along the spindle when said primary tilt gear rotates in said second tilt direction.
In the before described embodiment it is preferred that the actuator further comprises a wiper attached to said carrier.
In addition the actuator might be characterized by a PCB with an attached carbon strip wherein said wiper contacts said carbon strip.
For the before described embodiment it is preferred that said wiper is slidable along said carbon strip in a first wiper direction when said carrier slides in said first translation direction along said spindle; and wherein said wiper is slidable along said carbon strip in a second wiper direction when said carrier slides in said second translation direction along said spindle.
Finally it is proposed for the actuator that the rearview device, in particular the rearview head, is movable around the first axis and/or the second axis, in particular in the first direction, the second direction, the third direction and/or the fourth direction, by at least 20 angular degrees, preferably by at least 25 angular degrees, more preferably by at least 40 angular degrees, more preferably by at least 60 angular degrees, most preferably by at least 90 angular degrees.
Thus the claimed subject matter is based on the astonishing perception that an actuator for a rearview device of a review assembly can be controlled such that increased movement ranges can be provided that simultaneously allow a movement over the increased movement ranges within predefined time spans as well as provide the torques necessary for moving the complete rearview device, in particular a complete rearview head, without overloading a power supply system of the vehicle and without increasing the costs, weight or complexity of the actuator.
In particular the need to use costly high performance drive devices can be avoided. Such high performance drive devices have costs that are about two orders of magnitude higher as the costs for drive devices used in common glass actuators.
By ensuring that only one of the drive devices is actuated and is drawing electrical power the power provided by the power supply system for ordinary powerfold and glass actuators of common vehicles can be used to also actuate the two drive devices separately to move a complete rearview head in all four directions.
It should be noted that the features set out individually in the following description can be combined with each other in any technically advantageous manner and set out other forms of the present disclosure. It should be understood, however, that the disclosure is not limited to the precise arrangements and instrumentalities shown. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an implementation of system, apparatuses, and methods consistent with the present description and, together with the description, serve to explain advantages and principles consistent with the disclosure. The figures are not necessarily drawn to scale. Like numbers used in the figures refer to like components. However, it will be understood that the use of a number to refer to a component in a given figure is not intended to limit the component in another figure labelled with the same number. The description further characterizes and specifies the present disclosure in particular in connection with the figures.
In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which:
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.
As shown in
In
The operation of rearview mirror assembly 102 and rearview mirror assembly 104 will now be further described with additional reference to
As shown in the figure, rearview assembly 102 includes an axis 202, a rearview base in form of a mirror base 204, and a rearview head in form of a rearview mirror head 206. In
The actuation of the mirror head about axis 202 can be done from any position to move the mirror head to any other position about axis 202. For example, the mirror head may start in the stored position as shown in
Additionally, when mirror head 206 is in the drive position as shown in
As shown in the figure, rearview mirror assembly 102 includes a mirror base 204, a mirror head 206, and an axis 302. In
The actuation of the mirror head about axis 302 can be done from any position to move the mirror head to any other position about axis 302. For example, the mirror head may start in a tilted upwards position as shown in
In the example the first power source provides the first switch 322 with a maximum current of 1 A whereas the second power source provides the second switch 324 with a maximum current of 3 A.
Depending on the status of the first switch 322 and the second switch 324 the first drive device 330 and the second drive device 332 are driven such that they are not driven simultaneously but only one of the drive devices 330, 332 is operated at a time.
In the example the first switch 322 provides the first subsection 326 with a first polarity, in the example a positive voltage, whereas the second 328 subsection is provide with a second polarity, in the example a negative voltage. This allows only the first drive device 330 to be operated whereas the second drive device 332 is not operated independent on the status of the second switch 324.
This is reached by the electronic elements in form of the diodes 336, 338. The diodes 336, 338 are driven in a block direction in case the second polarity is provides whereas the diodes 336, 338 are driven in a pass direction in case the first polarity is provided by the first switch 322.
Depending on the status of the second switch 324 the first drive device 330 is operated in a first direction or a second direction. In case the second switch 324 provides a first polarity, e.g. a positive voltage, to the first subsection 326 and thus to the first drive device 330 the first drive device 330 is operated in the first direction whereas in the second status of the second switch 324 the second subsection 326 and thus the first drive device 330 is provided with a second polarity, e.g. a negative voltage, the first drive device 330 is operated in the second direction.
In case the first switch 322 provides the second subsection 328 with the first polarity, the first drive device 330 cannot be operated irrespective of the status of the second switch 324, whereas the second drive device 332 is operated in the third direction or the fourth direction depending on the status of the second switch 324. In case the second switch 324 provides the first polarity to the second subsection 328 the second drive device 332 is operated in the third direction whereas in case the second switch 324 provides the second polarity to the second subsection 328 the second drive device 332 is operated in the fourth direction.
The DZM 340′ is connected to a not shown first power source of the vehicle and a not shown second power source of the vehicle. Furthermore the DZM 340′ comprises respective not shown first and second switches. The DZM 340′ comprises a first output 342′ having output contacts Out 1 and Out 2 and a second output 344′ having output contacts Out 3 and Out 4.
In the example the DZM 340′ provides at the output 342′ a first signal provided by the first power source with a maximum current of 0.5 A whereas a second signal is provided at the output 344′ with a maximum current of 3 A.
The first and second signal act as a power supply for a first drive device 330′, in particular a first motor 350′, and a second drive device 332′, in particular a second motor 352′, respectively, in the following way.
The first output 342′ is connected to a first input 346′ of the circuitry 320′ having input contacts In 1 and In 2, whereas the second output 344′ is connected to a second input 348′ of the circuitry 320′ having input contacts In 23 and In 4. The circuitry 320′ comprises a drive device selection module 354′ connected to the first input 346′ and a direction selection module 356′ connected to the second input 348′.
Depending on the polarity of the first signal provided to the first input 346′ the drive device selection module 354′ switches the power supply either to a first drive device driver 358′ or a second drive device driver 360′. The first drive device driver 358′ is connected to the first drive device 330′, in particular the first motor 350′, whereas the second drive device driver 360′ is connected to the second drive device 332′, in particular the second motor 352′.
For example in case the first output contact Out 1 of the first output 342′ is at a potential of 13.5 V and the second output contact Out 2 of the first output 342′ is at a ground potential a first signal of 13.5 V with a first polarity is provided to the first input 346′. Based on the first signal the motor selection module 354′ provides a respective signal to the second drive device driver 360′ such that a voltage of 13 V is provided to the second drive device 332′, in particular the second motor 352′. By this first signal with the first polarity the first drive device 330′, in particular the first motor 350′, is not provided with power, in other words is switched off.
In case the first output contact Out 1 of the first output 342′ is at a ground potential and the second output contact Out 2 of the first output 342′ is at a potential of 13.5 V a first signal of-13,5 V with a second polarity being opposite the first polarity is provided to the first input 346′. Based on the first signal the motor selection module 354′ provides a respective signal to the first drive device driver 358′ such that a voltage of 13 V is provided to the first drive device 330′, in particular the first motor 350′. By this first signal with the second polarity the second drive device 332′, in particular the second motor 350′, is not provided with power, in other words is switched off.
Thus based on the polarity of the first signal via the drive device selection module 354′ it is selected whether the rearview device is moved around a first axis, e.g. a fold axis, by the second motor 352′ or a second axis, e.g. a tilt axis, by the first motor 350′.
The drive devices 330′, 332′ and motors 352′, 350′ are thus controlled such that they are not driven simultaneously but only one of them is operated at a time.
Depending on a second signal provided to the second input 348′, in particular its polarity, the first drive device 330′ or the second drive device 332′ is operated in different directions. In case the second signal provides a first polarity, e.g. a positive voltage of 13.5 V, to the second input 348′ by the drive device direction module 356′ the first drive device driver 358′ and/or the second drive device driver 360′ are provide with a signal such that a positive power supply is provided to the first motor 350′ or the second motor 352′. This polarity of the power supply let (depending on the first signal and/or the drive device selection module 354′ as described before) the motor 350′ turn in a first direction or let the motor 352′ turn in a third direction.
In case the second signal provides a second polarity opposite to the first polarity, e.g. a negative voltage of-13,5 V, to the second input 348′ by the drive device direction module 356′ the first drive device driver 358′ and the second drive device driver 360′ are provide with a signal such that a negative power supply is provided to the first motor 350′ or the second motor 352′. This polarity of the power supply let (depending on the first signal and/or the drive device selection module 354′ as described before) the motor 350′ turn in a second direction being opposite to the first direction or let the motor 352′ turn in a fourth direction being opposite to the third direction.
The actuator furthermore comprises a sensing device 362′ allowing the sensing of at least one parameter of the first drive device 330′, in particular the first motor 350′, and/or the second drive device 332′, in particular the second motor 352′. For example the speed and the direction of rotation of the first motor 350′ and/or the second motor 352′ is sensed. The readings of the sensing device 362′ is in particular provided to the DZM 340′, for example via feedback line 364′. This feedback allows a control of the first and second signal to ensure the correct rotation speed and direction.
As shown in the figure, actuator 400 includes axis 202, axis 302, an upper housing 402, a lower housing 404, and fasteners 406.
Upper housing 402 and lower housing 404 are joined together using fasteners 406 so that they may house and seal the internal components of actuator 400. Fasteners 406 may be any known fastener or fastening method, non-limiting examples of which include bolts, clips, or pins. In this example, fasteners 406 are screws.
As shown in the figure, actuator 400 includes a gear assembly 502, a tilt drive 504, and a fold drive 506. Tilt drive 504 is operable to rotate mirror head 206 around axis 302, and fold drive 506 is operable to rotate mirror head 206 around axis 202. The operation and arrangement of gear assembly 502, tilt drive 504, and fold drive 506 will now be described with additional reference to
As shown in the figure, gear assembly 502 includes a first drive device in form of a motor 602, in particular a DC motor, a second drive device in form of a motor 604, in particular a DC motor, a worm gear 606, a worm gear 608, an intermediate spindle 610, an intermediate tilt gear 612, an intermediate fold gear 614, and a gear sub assembly 616. The operation of gear assembly 502 and gear sub assembly 616 will now be described with additional reference to
To assemble gear sub assembly 616, first end 644 of spindle 618 is inserted into aperture 632 of secondary tilt gear 620. Next, slide 624 is inserted onto second end 646 of spindle 618 via channel 630, the contour of channel 630 matches that of spindle 618 so that it may be attached to spindle 618. Once attached, slide 624 is moved along spindle 618 from second end 646 towards first end 644 until it abuts against boss 634 of secondary tilt gear 620. After slide 624 has been attached, worm insert 626 is placed onto second end 646 of spindle 618 followed by biasing element 628. At this time secondary fold gear 622 is arranged such that second end 646 of spindle 618 may be insert through cavity 638 and aperture 648. Once secondary fold gear 622 has been placed onto spindle 618 it can be moved from second end 646 towards first end 644 of spindle 618 until boss 640 abuts against slide 624.
Secondary fold gear 622 is arranged such that during the assembly of gear sub assembly 616, biasing element 628 and worm insert 626 are able to fit inside of cavity 638. Biasing element 628 and worm insert 626 arranged inside of cavity 638 enables secondary fold gear 622 to be slid along spindle 618 until it abuts against slide 624.
The secondary tilt gear 620 and secondary fold gear 622 are formed as a single structure comprising two different gear portions. Secondary tilt gear 620 is formed by spur gear portion 902 and worm gear portion 904 and secondary fold gear 622 is formed by spur gear portion 912 and worm gear portion 914. Transition point 906 marks the transition from spur gear portion 902 to worm gear portion 904 of secondary tilt gear 620 and transition point 916 marks the transition from spur gear portion 912 to worm gear portion 914 of secondary fold gear 622. In this example variation, secondary tilt gear 620 and secondary fold gear 622 are formed from spur gear portions 902, 912 and worm gear portions 904, 914. In other example variations, secondary tilt gear 620 and secondary fold gear 622 may be formed from a combination of any number of different types of gears.
The formation of secondary tilt gear 620 and secondary fold gear 622 as a single component, each comprising a spur gear portion and a worm gear portion helps prevent backlash within gear assembly 502, tilt drive 504, and fold drive 506 of
A first end of worm gear portion 904, located at transition point 906, has a diameter shown by line 908. A second end of worm gear portion 904, opposite of its first end, has a diameter shown by line 910, where diameter 910 is smaller than diameter 908. Similarly, a first end of worm gear portion 914, located at transition point 916, has a diameter shown by line 918. A second end of worm gear portion 914, opposite of its first end, has a diameter shown by line 920, where diameter 920 is smaller than diameter 908. The relationship of worm gear portion 904 and worm gear portion 914 is such that diameter 908 is smaller than diameter 918 and diameter 910 is smaller than diameter 920.
As shown in the figure, lower housing 404 includes a bearing 408, a bearing 410, an end surface 412, an end surface 414, a recess 416, a recess 418, and a channel 420. The listed components of lower housing 404 are designed such that they may receive and affix gear sub assembly 616 without impeding the operation of gear sub assembly 616 within actuator 400 of
Bearing 408 is arranged to receive the first end 644 (
Since lower housing 404 is a single part, the distance between end surface 412 and end surface 414 is fixed. The fixed distance between end surface 412 and end surface 414 means that gear sub assembly 616 is installed into lower housing 404 with worm insert 626 and biasing element 628 located within cavity 638 of secondary fold gear 622. Biasing element 628 is compressed so it may fit inside of cavity 638, once gear sub assembly 616 is installed within lower housing 404, biasing element 628 will then exert a force along the components of gear sub assembly 616.
The force exerted by biasing element 628 forces secondary tilt gear 620 against end surface 412 via worm insert 626 and slide 624, and also forces secondary fold gear 622 against end surface 414. The application of force by biasing element 628 improves the meshing between secondary tilt gear 620 and tilt drive 504 and between secondary fold gear 622 and fold drive 506. The improved meshing reduces backlash within gear sub assembly 616 that would occur if secondary tilt gear 620 or secondary fold gear 622 were able to freely slide along spindle 618.
Point 1204 shows the meshing between worm gear portion 914 and the teeth of primary fold gear 1202, and point 1206 shows a gap between the teeth of worm gear portion 904 and primary fold gear 1202. Since worm gear portion 914 has a diameter 918 and diameter 920 that is larger than the corresponding diameters of worm gear portion 904, namely diameter 908 and diameter 910, worm gear portion 914 is operable to mesh with the teeth of primary fold gear 1202 while worm gear portion 904 does not. In this manner, secondary fold gear 622 can be rotated independent of secondary tilt gear 620 in order to operate fold drive 506.
Point 1306 shows the meshing between worm gear portion 904 and the teeth of primary tilt gear 1302. The relationship of the diameters between worm gear portion 914 and worm gear portion 904 does not affect meshing with primary tilt gear 1302 in the same manner the relationship affected meshing with primary fold gear 1202 of
Primary tilt gear 1302 has a tilt gear extension 1304 which extends in the direction of worm gear portion 904 and away from worm gear portion 914. This extension allows meshing between worm gear portion 904 and the teeth of primary tilt gear 1302 without interference from worm gear portion 914 even though worm gear portion 914 has a larger diameter, shown as diameter 918 of
If operation of tilt drive 504 is requested by the vehicle operator in order to adjust mirror head 206 of
Alternatively, if motor 602 rotates worm gear 606 in a second direction, in particular by changing the status of switch 324, it will drive intermediate gear 612 to turn secondary tilt gear 620 in second tilt gear direction 1408. The rotation of secondary tilt gear 620 imparts a rotation to primary tilt gear 1302 (
Briefly referring to
Referring back to
The rotation of secondary fold gear 622 is similar to that of secondary tilt gear 620 described above, since spindle 618 of gear sub assembly 616 is fixed in place, secondary fold gear 622 is free to rotate around spindle 618. In this manner, operation of the fold drive 506 and tilt drive 504 can be achieved simultaneously. However, simultaneous operation of fold drive 506 and tilt drive 504 is not required, the arrangement of gear assembly 502 allows for independent operation of tilt drive 504 or fold drive 506. The operation of gear assembly 502 and tilt drive 504 will now be described with reference to
Tilt axle 1504 further comprises taper 1518 which cooperates with taper 1514 of tilt journal 1502. Tilt journal 1502 is arranged such that it is retained in place between upper housing 402 and lower housing 404 of actuator 400. Tilt journal 1502 being retained between upper housing 402 and lower housing 404 ensures the correct location of taper 151, so that the cooperation between taper 1514 and taper 1518 leads to tilt axle 1504 being properly aligned. Without tilt journal 1502, any mismatch between the alignment of upper housing 402 and lower housing 404 would result in a step during the operation of tilt drive 504. A step during the operation of tilt drive 504 would increase friction, create an audible noise as well as create an in-balance of the operation of tilt axle 1504. Tilt axle 1504 additionally includes tilt wiper carrier connector 1544 for use with a tilt memory system. A tilt memory system will be described later with reference to
The abutment of taper 1518 and taper 1514 allows attachment point 1516 of tilt axle 1504 to protrude through aperture 1512 of tilt journal 1502. The extension of attachment point 1516 through aperture 1512 provides clearance for mirror head 206 (not shown) to be attached to attachment point 1516 while maintaining clearance with the rest of actuator 400. This attachment enables the transfer of motion of tilt drive 504 to mirror head 206 such that it may be rotated about axis 302 of
Referring back to
Further, the frictional force created at the interface of taper 1520 and taper 1524 results in tilt axle 1504 rotating when primary tilt gear 1302 is driven.
Tilt clutch 1506 includes protrusion 1528 and primary tilt gear 1302 includes recess 1532, where the geometry of protrusion 1528 is such that it fits into recess 1532. Tilt spring 1508 applies a pressure which holds tilt clutch 1506 against primary tilt gear 1302 such that protrusion 1528 is restrained in recess 1532, which results in tilt clutch 1506 rotating when primary tilt gear 1302 is rotated during operation.
The force exerted by tilt spring 1508 applies pressure to tilt clutch 1506, which is transferred to primary tilt gear 1302 as described above. The force transferred then holds primary tilt gear 1302 against tilt axle 1504 and tilt axle 1504 against tilt journal 1502, with taper 1524 abutting taper 1520 and taper 1518 abutting taper 1514 respectively. The abutment of taper 1524 against taper 1520 and taper 1518 against taper 1514 forces the alignment of tilt journal 1502, tilt axle 1504, primary tilt gear 1302, and tilt clutch 1506 along axis 302.
To operate tilt drive 504, power is delivered to motor 602 from an external source (not shown), such as a vehicle's battery or electrical system, in particular via the circuitry 320. Once supplied with power, in particular by putting the first switch 322 and the second switch into the respective state, first drive device 330 in form of motor 602 will turn worm gear 606, which may then rotate intermediate tilt gear 612, which in turn rotates secondary tilt gear 620. With tilt drive 504 in the installed position, the teeth of tilt gear extension 1304 mesh with the worm gear portion 904 of secondary tilt gear 620 so as secondary tilt gear 620 rotates, it results in the rotation of primary tilt gear 1302. In this example variation, when secondary tilt gear 620 rotates in first tilt gear direction 1406, primary tilt gear 1302 rotates in first tilt direction 304 and secondary tilt gear 620 rotating in second tilt gear direction 1408 results in primary tilt gear 1302 rotating in second tilt direction 306. Additionally, the arrangement of primary tilt gear 1302 and more specifically, tilt gear extension 1304 and secondary tilt gear 620 allows tilt drive 504 to be operated independent of fold drive 506.
As tilt gear extension 1304 is rotated by the rotation of secondary tilt gear 620, primary tilt gear 1302 begins to rotate. Since tilt clutch 1506 is rotationally locked to primary tilt gear 1302 via protrusion 1528 and recess 1532, rotation of primary tilt gear 1302 results in tilt clutch 1506 rotating as well. Further, as described above in
Attachment point 1516 of tilt axle 1504 is attached to mirror head 206, therefore, when tilt axle 1504 rotates the connection between mirror head 206 and attachment point 1516 results in the tilting of mirror head 206 in either first tilt direction 304 or second tilt direction 306 about axis 302. In this manner, mirror head 206 can be actuated such that a reflective element (not shown) attached to mirror head 206 provides an acceptable view rearward of the vehicle. For example, tilt drive 504 can be operated such that mirror head 206 rotates about axis 302 in first tilt direction 304 to the position shown in
As stated above, with mirror head 206 attached to attachment point 1516 of tilt axle 1504, when tilt drive 504 is electrically operated, it results in the adjustment of mirror head 206 about axis 302. Conversely, if mirror head 206 is manually adjusted, the connection between mirror head 206 and tilt axle 1504 via attachment point 1516 results in the rotation of tilt axle 1504. The operation of tilt drive 504 during manual operation will now be described with additional reference to
Mirror head 206 will rotate as it is manually adjusted which results in the rotation of tilt axle 1504 via attachment point 1516. As described above in
Tilt axle 1504 and tilt clutch 1506 continue to rotate until protrusion 1528 finally extends out of recess 1532 and tilt clutch 1506 becomes disengaged from primary tilt gear 1302, tilt spring 1508 is compressed as shown in
Returning mirror head 206 to its drive position can be done through electrical actuation or manually. In the case of manual operation, mirror head 206 can be rotated toward back towards its drive position. Since mirror head 206 is attached to tilt axle 1504 via attachment point 1516, as mirror head 206 rotates so does tilt axle 1504 and tilt clutch 1506. As tilt axle 1504 and tilt clutch 1506 rotate, protrusion 1528 moves towards recess 1532 of primary tilt gear 1302. When protrusion 1528 reaches recess 1532 they interlock and allow the force exerted by tilt spring 1508 to push tilt clutch 1506 against primary tilt gear 1302.
In the case of electrical operation, power is delivered to motor 602 which then rotates primary tilt gear 1302 as described above in reference to
In some instances, it may be desirable to have a memory function for use with actuator 400. A memory function would allow the driver of a vehicle to set a specific fold and tilt angle for mirror head 206 that can then be stored. If the position of mirror head 206 is changed, the stored position could then be retrieved at a later time to automatically move mirror head 206 back to the stored position without any fine tune adjustment by the driver. A tilt memory function of actuator 400 will now be described with reference to
As shown in the figure, PCB 2502 is arranged on upper housing 402 and further includes a carbon strip 2508 and tilt wiper carrier 2504 further includes a tilt wiper 2510. Carbon strip 2508 is arranged on PCB 2502 such that tilt wiper 2510 is operable to make direct contact with carbon strip 2508. At this time, when tilt drive 504 is operated, tilt axle 1504 will rotate resulting in tilt wiper carrier 2504 sliding along intermediate spindle 610. As tilt wiper carrier 2504 slides along intermediate spindle 610 so does tilt wiper 2510, which leads to tilt wiper 2510 contacting a different point along carbon strip 2508. Once the desired tilt position of mirror head 206 is reached, a measurement may be taken by a potentiometer (not shown) to record the position where tilt wiper 2510 contacts carbon strip 2508. In order to adjust the tilt angle of mirror head 206 by using the memory system, power may delivered to motor 602 to adjust the tilt angle of mirror head 206 until the potentiometer system detects that the position of tilt wiper 2510 has contacted the point along carbon strip 2508 that matches the stored position of tilt wiper 2510 along carbon strip 2508.
The operation of gear assembly 502 and fold drive 506 will now be described with reference to
As shown in the figures, fold drive 506 includes primary fold gear 1202, a shaft 2702, a slip collar 2704, a lock ring 2706, a fold spring 2708, a fold clutch 2710, a gear seat 2712, and a retainer 2714. The assembly and arrangement of the elements of fold drive 506 will now be described with additional reference to
Shaft 2702 has a diameter 2716 at its proximal end and a diameter 2718 at its distal end, where diameter 2716 is larger than diameter 2718, which gives a taper to shaft 2702. Shaft 2702 additionally includes pins 2722 and locator pin 2724. When assembling fold drive 506, slip collar 2704 is placed onto shaft 2702 such that shaft 2702 passes through aperture 2734. To assure the correct alignment of slip collar 2704, locator pin 2724 fits through aperture 2736 of slip collar 2704. Slip collar 2704 additionally includes protrusion 2738 which is designed to fit within a corresponding recess of fold clutch 2710 of
Aperture 2736 receiving locator pin 2724 ensures that each of pin 2722 fits with a corresponding recess 2728 on the inner circumference of slip collar 2704. Once locator pin 2724 is aligned with aperture 2736 and pin 2722 aligned with recess 2728, slip collar 2704 can be moved along shaft 2702 until protrusion 2726 of slip collar 2704 fit within recess 2720 of shaft 2702.
As shown in
The geometry of extension 2756 incorporates a taper which corresponds to taper 2760 of gear seat 2712. When assembled within fold drive 506, fold spring 2708 exerts a biasing force against fold clutch 2710 which is transferred to primary fold gear 1202, which forces the taper of extension 2756 against taper 2760 of gear seat 2712. The corresponding tapers of annular extension 2752 and gear seat 2712 ensures the correct alignment between primary fold gear 1202 and gear seat 2712. When assembled within fold drive 506, retainer 2714 is fixed in place along shaft 2702 to prevent movement of gear seat 2712, primary fold gear 1202, and fold clutch 2710 due to the biasing force of fold spring 2708.
Retainer 2714 is operable to be attached to shaft 2702 (not shown) and fixed in place such that it abuts gear seat 2712. Once fixed to shaft 2702, retainer 2714 can prevent movement of gear seat 2712, primary fold gear 1202, and fold clutch 2710.
Once shaft 2702, slip collar 2704, lower housing 404, lock ring 2706, fold spring 2708, and fold clutch 2710 have been assembled as described above in
Primary fold gear 1202 is lowered onto fold clutch 2710 such that shaft 2702 passes through aperture 2758 and protrusion 2754 of primary fold gear 1202 are received within recess 2750 of fold clutch 2710. Next, gear seat 2712 is lowered onto primary fold gear 1202 such that shaft 2702 passes through aperture 2764 until taper 2760 abuts the corresponding taper of extension 2756 of primary fold gear 1202. Finally, retainer 2714 is placed so that shaft 2702 passes through aperture 2766 and lowered until it abuts gear seat 2712, where it is then fixed in place. The fixing of retainer 2714 prevents movement of fold clutch 2710, primary fold gear 1202, and gear seat 2712 against the biasing force of fold spring 2708.
As shown in the figure, when fold drive 506 is assembled, gear seat 2712 abuts slip collar 2704 such that extension 2740 of slip collar 2704 is received by recess 2762 of gear seat 2712. Since slip collar 2704 is fixed in place by a force interference fit with shaft 2702 and gear seat 2712 is fixed in place by retainer 2714, it is possible to disengage fold clutch 2710 during manual operation of fold drive 506. Manual operation of fold drive 506 will be described later with reference to
As shown in the figure, extension 2756 is distributed equidistant around the inner circumference of primary fold gear 1202 wherein each end of extension 2756 creates a gap 3702. The abutment of the taper of extension 2756 against taper 2560 of gear seat 2712 forces primary fold gear 1202 to expand radially along extension 2756 as shown by direction 3704. The expansion along direction 3704 is compensated for by gap 3702 which allows primary fold gear 1202 to contract inwards as shown by direction 3706. The expansion of primary fold gear 1202 along direction 3704 and contraction along direction 3706 creates a trilobal shape. The trilobal shape of primary fold gear 1202 improves the meshing with gear assembly 502, which will now be further described with reference to
As shown in
The improved meshing reduces backlash between primary fold gear 1202 and secondary fold gear 622. If a conventional cylindrical fold gear was used, small variations in the arrangement of components within fold drive 506 and even further, actuator 400, would result in free play between the gear teeth of primary fold gear 1202 and secondary fold gear 622. When not being operated, the free play between primary fold gear 1202 and secondary fold gear 622 would result in free play of mirror head 206 (not shown). The free play of mirror head 206 would introduce issues such as mirror head 206 vibrating or wobbling due to external forces such as wind while driving. Additionally, when fold drive 506 is electrically operated, the free play between the gear teeth of primary fold gear 1202 and secondary fold gear 622 would be closed as secondary fold gear 622 rotated. Once the space between the teeth of primary fold gear 1202 and secondary fold gear 622 is closed, the teeth would abruptly contact each other, which could damage either of primary fold gear 1202 or secondary fold gear 622 with repeated use.
In this example, primary fold gear 1202 has expanded to take a trilobal shape, however the primary fold gear 1202 may expand to other geometries as well. For example, if secondary fold gear 622 was too close to primary fold gear 1202, primary fold gear 1202 would deform such that extension 2756 nearest to secondary fold gear 622 would deform so that it moved in the opposing direction, which in this example would be opposite of direction 3704. The remaining extension 2756 would then deform to compensate for the deformation of extension 2756 adjacent to secondary fold gear 622. In this manner, primary fold gear 1202 can morph such that it has the optimal geometry to improve meshing between primary fold gear 1202 and secondary fold gear 622 to account for variations incurred in the production and mounting of the elements of actuator 400.
To operate fold drive 506, power is delivered to motor 604 from an external source (not shown), such as a vehicle's battery or electrical system, in particular via the circuitry 320. Once supplied with power, motor 604, in particular representing first drive device 330 will turn worm gear 608 (
Returning to
As described above in
However, operation of fold drive 506 can be performed for longer periods of time in order to adjust mirror head 206 along first fold direction 208 from a drive position as shown in
When mirror head 206 is in the drive position, actuator 400 is in its nominal position as well. In the nominal position, fold clutch 2710 is engaged, meaning that protrusion 2754 of primary fold gear 1202 is located within recess 2750 of fold clutch 2710, as shown in
As actuator 400 rotates, so does gear assembly 502, including secondary fold gear 622. Since secondary fold gear 622 meshes with primary fold gear 1202, as actuator 400 rotates the primary fold gear 1202 rotates. Referring briefly to
Referring to
Returning mirror head 206 to its drive position can be achieved through electrical actuator or manual operation. In the case of manual operation, mirror head 206 can be rotated back towards its drive position. As mirror head 206 rotates, so does primary fold gear 1202 and protrusion 2754 slides along the surface of fold clutch 2710. As mirror head 206 approaches the drive position, protrusion 2754 of primary fold gear 1202 will begin to align with recess 2750 of fold clutch 2710. Once mirror head 206 reaches the drive position, the biasing force of fold spring 2708 will force protrusion 2754 of primary fold gear 1202 into recess 2750 of fold clutch 2710 such that fold clutch 2710 abuts primary fold gear 1202. At this time, fold clutch 2710 is engaged as described above in
In the case of electrical operation, power is delivered to motor 604 resulting in the rotation of secondary fold gear 622 as described above in
In some instances, it may be desirable to have a memory function for use with actuator 400. A memory function would allow the driver of a vehicle to set a specific fold and tilt angle for mirror head 206 that can then be stored at a later time. If the position of mirror head 206 is changed, the stored position could then be retrieved at a later time to automatically move mirror head 206 back to the stored position without any fine tune adjustment by the driver. A fold memory function of actuator 400 will now be described with reference to
As described above, during the operation of fold drive 506 shaft 2702, slip collar 2704, and gear seat 2712 will remain static while actuator 400 rotates about axis 202, including PCB 2502. As PCB 2502 rotates around axis 202 during the operation of fold drive 506, fold wiper 4104 will contact different points along carbon strip 4202. Once the desired fold position of mirror head 206 has been reached a measurement may be taken by a potentiometer (not shown) to record the position of fold wiper 4104 along carbon strip 4202. In order to adjust the fold angle of mirror head 206 by using the memory system, power may delivered to motor 602 to adjust the fold angle of mirror head 206 until the potentiometer system detects that the position of fold wiper 4104 has contacted the point along carbon strip 4202 that matches the stored position of fold wiper 4104 along carbon strip 4202.
Further advantageous embodiments of the disclosed subject matter are described with the help of the following clauses.
CLAUSE 1. Method for moving at least one rearview device of at least one rearview assembly around at least one first axis and around at least one second axis, by at least one actuator comprising at least one electrically driven first drive device and at least one electrically driven second drive device, characterized in that the method comprises controlling the first drive device and the second drive device such that only one of the drive devices is driven at a time.
CLAUSE 2. Method according to clause 1, wherein the method comprises providing at least one circuitry connected at least indirectly to the first drive device and the second drive device for controlling the first drive device and the second drive device.
CLAUSE 3. Method according to clause 2, wherein
CLAUSE 4. Method according to clause 3, wherein
CLAUSE 5. Method according to clause 3 or 4, wherein
CLAUSE 6. Method according to clause 5, wherein
CLAUSE 7. Method according to one of the clauses 3 to 6, wherein
CLAUSE 8. Method according to one of the clauses 5 to 7, wherein
CLAUSE 9. Method according to clause 8, wherein
CLAUSE 10. Actuator for moving at least one rearview device around at least one first axis and around at least one second axis, the actuator comprising at least one electrically driven first drive device and at least one electrically driven second drive device, characterized in that the actuator is configured to move the rearview device according to a method of one of the preceding clauses.
CLAUSE 11. Actuator according to clause 10, wherein
CLAUSE 12. Actuator according to clause 11, wherein
CLAUSE 13. Actuator according to clause 11 or 12, wherein
CLAUSE 14. Actuator according to clause 13, wherein
CLAUSE 15. Actuator according to clause 13 or 14, wherein
CLAUSE 16. Actuator according to one of the clauses 11 to 15, wherein
CLAUSE 17. Actuator according to clause 16, wherein
CLAUSE 18. Actuator according to one of the clauses 10 to 17, wherein the first axis and the second axis are running at angle to each other, in particular the first axis and the second axis are running perpendicular to each other.
CLAUSE 19. Actuator according to one of the clauses 10 to 18, wherein the first drive device and/or the second drive device comprise at least one DC motor.
CLAUSE 20. Actuator according to one of the clauses 10 to 19, wherein
CLAUSE 21. Actuator according to one of the clauses 10, wherein said secondary fold gear comprises a cavity.
CLAUSE 22. Actuator according to clause 21, wherein
CLAUSE 23. Actuator according to one of the clauses 10 to 19, wherein
CLAUSE 24. Actuator according to clause 23, wherein
CLAUSE 25. Actuator according to clause 23 or 24,
CLAUSE 26. Actuator according to one of the clauses 10 to 25, wherein
CLAUSE 27. Actuator according to one of the clauses 10 to 26, wherein
CLAUSE 28. Actuator according to one of the clauses 20 to 27, wherein
CLAUSE 29. Actuator according to one of the clauses 20 to 28, wherein said secondary fold gear may rotate as said secondary tilt gear remains stationary.
CLAUSE 30. Actuator according to one of the clauses 20 to 29, wherein said secondary tilt gear may rotate as said secondary fold gear remains stationary.
CLAUSE 31. Actuator according to one of the clauses 20 to 30, wherein said secondary fold gear may rotate as said secondary tilt gear rotates.
CLAUSE 32. Actuator according to one of the clauses 10 to 19, wherein
CLAUSE 33. Actuator of clause 32, said actuator further comprising:
CLAUSE 34. Actuator of clause 33, further comprising
CLAUSE 35. Actuator of clause 34, wherein
CLAUSE 36. Actuator of one of the clauses 32 to 35, further comprises a secondary tilt gear comprising a spur gear portion, a worm gear portion, and a transition point;
CLAUSE 37. Actuator according to one of the clauses 10 to 19, wherein said actuator comprises:
CLAUSE 38. Actuator of clause 37, further comprising a wiper attached to said carrier.
CLAUSE 39. Actuator of clause 38, further comprising a PCB with an attached carbon strip wherein said wiper contacts said carbon strip.
CLAUSE 40. Actuator of clause 39, wherein said wiper is slidable along said carbon strip in a first wiper direction when said carrier slides in said first translation direction along said spindle; and
CLAUSE 41. Actuator according to one of the clauses 10 to 40, wherein
The foregoing description of various preferred embodiments have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The example embodiments, as described above, were chosen and described in order to best explain the principles of the disclosure and its practical application to thereby enable others skilled in the art to best utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2021 119 913.1 | Jul 2021 | DE | national |
This application is a is a National Stage Entry of International Patent Application No. PCT/EP2022/070965, filed on Jul. 26, 2022, which claims the benefit of priority to German Patent Application No. DE 10 2021 119 913.1, filed on Jul. 30, 2021, each of which is hereby incorporated by reference in its entirety for all purposes.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2022/070965 | 7/26/2022 | WO |
