Patent ID: 6900560

Claim:
A holdable multi-functional rotary device comprising: a casing suitable to be held by users; an interior thereof being formed with a receiving space; a battery received in the receiving space of the casing; a driving unit received in the receiving space of the casing; and including a motor; a spindle of the motor is engaged with a primary gear set which includes a larger primary gear and a small gear set; and a driving shaft extending out of the casing; and a driven gear set being firmly secured to the driving shaft; a power switch installed in the casing for electrically enabling the battery and the driving unit; a speed change gear set driving by the motor for driving the driving unit; the speed change gear set comprising: a gear frame pivoted to a lateral side of the motor and the driving shaft by a pivotal shaft; a distal end of the gear frame extending to an exterior of the casing to be mounted with a button; a button mounted at the distal end of the gear frame extending out of the casing for swinging the gear frame to predetermined positions; a high speed driving gear set axially installed at one end of the gear frame for transferring rotation power from the primary gear set to the driven gear set; a lower speed driving gear set axially installed at another and of the gear frame for transferring rotation power from the primary gear set to the driven gear set; the low speed driving gear set having a large driving gear and a small driving gear; a plurality of rotary pieces arranged around the driving shaft; the rotary pieces presenting its function by rotating the driving shaft; a cover installed in a bottom of the casing for updating the battery; the casing being installed with a guide groove which is matched with a swinging range of the gear frame so as to guide the gear frame to swing according to a predetermined moving trace; wherein the gear frame is capable of swinging around the pivotal shaft by pushing the button; when the high speed driving gear set is in contact with the primary gear set and the driven gear set; the driving shaft securing the driving gear set will have a high rotation speed; and when the low speed driving gear set is in contact with the primary gear set and the driven gear set; the driving shaft securing the driving gear set will have a low rotation speed.