Multi-mode scroll wheel for input device
Disclosed are computer peripheral interface devices (such as computer mice) that include a wheel member configured to rotate around an axis in a plurality of modes, where each of the plurality of modes corresponds to a respective unique friction profile. The plurality of operation modes includes a freewheel mode and at least two additional modes. The at least two additional modes includes two or more different ratchet modes, two or more different constant friction modes, or at least one constant friction mode and at least one ratchet mode. The interface device also includes an actuator assembly configured to set the wheel member to each of the plurality of operation modes.
1. An interface device comprising:
a wheel member configurable to rotate around an axis in a plurality of operation modes, each operation mode associated with a respective friction profile,
wherein the wheel member comprises a cavity and a side wall of the cavity that includes two or more zones arranged in an axial direction of the wheel member, wherein:
a first zone of the two or more zones comprises a plurality of teeth; and
a second zone of the two or more zones has a circularly curved even surface; and
an actuator assembly comprising a carriage and two arms coupled to the carriage, wherein:
the carriage is configured to linearly translate along a radial direction relative to the wheel member;
a first arm of the two arms or a component coupled thereto is configured to contact the first zone when the carriage is at a first location;
a second arm of the two arms or a component coupled thereto is configured to contact the second zone when the carriage is at a second location; and
the first arm and the second arm or the components coupled thereto are in no contact with the first zone and the second zone, respectively, when the carriage is at a third location.
2. The interface device of claim 1 wherein each of the two arms is rotatable with respect to the carriage and is coupled to the carriage through a spring.
3. The interface device of claim 1 wherein the first arm comprises a contact ball for contacting the first zone and wherein the second arm includes a friction pad for contacting the second zone, the friction pad comprising a solid friction material.
4. The interface device of claim 1 wherein the second arm includes a friction pad for contacting the second zone, the friction pad comprising a solid friction material.
5. The interface device of claim 1 wherein the plurality of operation modes includes a freewheel mode and at least two additional modes, the at least two additional modes including:
two or more different ratchet modes;
two or more different constant friction modes; or
at least one constant friction mode and at least one ratchet mode.
6. The interface device of claim 5 wherein the two additional modes correspond to when either the first arm or the second arm or components coupled thereto are in contact with the first zone or the second zone, and
wherein the freewheel mode corresponds to when the first arm and the second arm or components coupled thereto are not in contact with the first zone or the second zone.
7. The interface device of claim 5 wherein, in the freewheel mode, the wheel member is configured to decelerate at a rate below 500 rpm per second.
8. The interface device of claim 5 wherein, in the freewheel mode, the wheel member is configured to lose less than 30% of total rotational energy per second.
9. The interface device of claim 5 wherein, in the freewheel mode, the wheel member is configured to receive less than 0.05 millinewton-meter of braking torque.
10. The interface device of claim 5 wherein:
in each of the two or more different constant friction modes or the at least one constant friction mode, a constant friction force is applied to the wheel member by a friction applying assembly;
in the freewheel mode, no friction force is applied to the wheel member by the friction applying assembly; and
in each of the two or more different ratchet modes or the at least one ratchet mode, the respective friction profile includes a plurality of periodic segments.
11. The interface device of claim 10 , wherein, in one of the two or more different ratchet modes or the at least one ratchet mode, the plurality of periodic segments includes 50 or more periodic segments.
12. The interface device of claim 10 , wherein, in each of the two or more different ratchet modes or the at least one ratchet mode, the respective friction profile includes a triangle wave, a parabola, a sinusoidal wave, a square wave, an ascending ramp, or a descending ramp.
13. The interface device of claim 1 wherein the actuator assembly comprises a direct current motor, a servo motor, a stepper motor, a solenoid, a voice coil motor, or a linear motor.
14. An interface device comprising:
a wheel member configurable to rotate around an axis in a plurality of operation modes, each operation mode associated with a respective friction profile,
wherein the wheel member comprises a cavity, a side wall of the cavity that is concentric with an outer surface of the wheel member, and the side wall including two or more zones arranged in an axial direction of the wheel member, wherein:
a first zone of the two or more zones includes a first surface type; and
a second zone of the two or more zones includes a second surface type; and
an actuator assembly comprising a carriage and two arms coupled to the carriage, wherein:
the carriage is configured to linearly translate along a radial direction relative to the wheel member;
a first arm of the two arms is configured to contact the first zone when the carriage is at a first location;
a second arm of the two arms or a component coupled thereto is configured to contact the second zone when the carriage is at a second location; and
the first arm and the second arm are not in contact with the first zone and the second zone, respectively, when the carriage is at a third location.
15. The interface device of claim 14 wherein each of the two arms is coupled to the carriage through a spring.
16. The interface device of claim 14 wherein the first arm comprises a contact ball for contacting the first zone.
17. The interface device of claim 14 wherein the second arm includes a friction pad for contacting the second zone, the friction pad comprising a solid friction material.
18. The interface device of claim 14 wherein the plurality of operation modes includes a freewheel mode and at least two additional modes, the at least two additional modes including:
two or more different ratchet modes;
two or more different constant friction modes; or
at least one constant friction mode and at least one ratchet mode.
19. The interface device of claim 18 wherein the two additional modes correspond to when either the first arm or the second arm are in contact with the first zone or the second zone, and
wherein the freewheel mode corresponds to when the first arm and the second arm are not in contact with the first zone or the second zone.
20. The interface device of claim 18 wherein:
in each of the two or more different constant friction modes or the at least one constant friction mode, a constant friction force is applied to the wheel member by a friction applying assembly;
in the freewheel mode, no friction force is applied to the wheel member by the friction applying assembly; and
in each of the two or more different ratchet modes or the at least one ratchet mode, the respective friction profile includes a plurality of periodic segments.