Wrist watch oscillating step motor with sweep motion
First Claim
1. An oscillating stepping motor, comprising:
- an output gear, a rotor and two driving wheels;
wherein;
the output gear is rotated by a certain angle in a certain direction by oscillating the rotor in a certain angle range to feed the two driving wheels in sequence;
the rotor includes two feed teeth;
one of the two feed teeth feeds one of the two driving wheels by oscillation of the rotor in one direction and the other of the two feed teeth feeds the other of the two driving wheels by the oscillation of the rotor in the other direction;
the two driving wheels are comprised of two star wheels contacting and being driven by the two feed teeth in a certain direction and two gears coupled with the two star wheels, respectively, so as to be associated with each other;
the two star wheels are positioned so that tooth tips thereof are not engaged with each other; and
the two gears are positioned so that tooth tips thereof are engaged with each other.
3 Assignments
0 Petitions
Accused Products
Abstract
An oscillating stepping motor can reduce a required rotational angle of a rotor to drive a star wheel, reduce idle driving, cut the loss of energy required for the driving, reduce power consumption even in high-frequency driving, and stably operate. Two star wheels are located so that the tooth tips thereof are not engaged with each other. A rotor shaft includes a rotor pinion having two feed teeth at a certain aperture angle. One of the feed teeth feeds one of the driving wheels by oscillation of the rotor in one direction and the other of the feed teeth feeds the other of the driving wheels by the oscillation of the rotor in the other. The rotor then oscillates within a certain angle range, thereby sequentially rotating output gears in a certain direction by a certain angle.
11 Citations
8 Claims
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1. An oscillating stepping motor, comprising:
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an output gear, a rotor and two driving wheels; wherein; the output gear is rotated by a certain angle in a certain direction by oscillating the rotor in a certain angle range to feed the two driving wheels in sequence; the rotor includes two feed teeth; one of the two feed teeth feeds one of the two driving wheels by oscillation of the rotor in one direction and the other of the two feed teeth feeds the other of the two driving wheels by the oscillation of the rotor in the other direction; the two driving wheels are comprised of two star wheels contacting and being driven by the two feed teeth in a certain direction and two gears coupled with the two star wheels, respectively, so as to be associated with each other; the two star wheels are positioned so that tooth tips thereof are not engaged with each other; and the two gears are positioned so that tooth tips thereof are engaged with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An oscillating stepping motor in which an output gear is rotated by a certain angle in a certain direction by oscillating a rotor in a certain angle range to feed two driving wheels in sequence, wherein:
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the rotor includes two and only two feed teeth; and one of the two feed teeth feeds one of the two driving wheels by oscillation of the rotor in one direction and the other of the two feed teeth feeds the other of the two driving wheels by the oscillation of the rotor in the other direction.
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Specification