Input device

An input device for communication with a processor-based device, the input device comprising:

• a housing;
• a scroll wheel which is rotatably mounted on the housing in a manner such that a part of the scroll wheel is exposed from the housing for a user of the input device to access the exposed part of the scroll wheel to scroll the scroll wheel, and which comprises a ring portion and an arresting surface, wherein the arresting surface extends along an inner circumference of the ring portion;
• a lever which is provided with first and second lever arms and which is mounted on the housing, wherein the lever is pivotable to move a first free end portion of the first lever arm to engage with the arresting surface of the scroll wheel for the scroll wheel to be in a resistive-wheeling mode and to disengage from the arresting surface of the scroll wheel for the scroll wheel to be in a free-wheeling mode;
• a user-input unit comprising an actuation member operatively coupled to the lever, wherein the actuation member is movable relative to the housing to cause the lever to pivot to change a mode of the scroll wheel between the resistive-wheeling mode and the free-wheeling mode;
• and
• a motion converter in engagement with a second free end portion of the second lever arm, the motion converter comprising a rotary member rotatable about a rotational axis, the motion converter configured to convert a rotational movement of the rotary member into an output motion to move the second free end portion of the second lever arm so as to pivot the lever about a pivot axis for engaging or disengaging the first free end portion of the first lever arm and the arresting surface of the scroll wheel;
• wherein the actuation member is operatively coupled with the motion converter in a manner such that the motion converter changes the mode of the scroll wheel, between the resistive-wheeling mode and the free-wheeling mode, based on one or more actuations of the actuation member.