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US 2003/0067231 A1Published application
Vibration-generating device which causes variations in vibration and electronic apparatus including the same
OwnerAtsushi Masudainventor
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OwnerAtsushi Masudainventor
Estimating the term…
A vibration-generating device includes a motor stored in a housing such that a rotating shaft projects from the housing. A weight is attached to the rotating shaft and a coil spring which serves as an elastic member is wound around the rotating shaft. One end of the coil spring is attached to a shaft and the other end to a restraining projection. When the rotating shaft and the weight reciprocate, the housing vibrates due to an impact which occurs every time the moving direction of the weight is reversed. When a stepping motor is used, an impact occurs and damping vibration is generated due to the impact when a driving pulse is applied to control the motor. Accordingly, the housing vibrates due to this impact or the damping vibration. In addition, rotation control is easily performed and various vibrations are obtained by changing the vibration frequency and amplitude.
A vibration-generating device comprising:
A vibration-generating device comprising:
An electronic apparatus comprising a vibration-generation device including a rotary motor retained inside a housing and a control unit which drives the motor, wherein the control unit reciprocally rotates a rotating shaft of the motor, thereby causing the housing to vibrate.
An electronic apparatus comprising a vibration-generation device including a rotary stepping motor retained inside a housing and a control unit which drives the stepping motor, wherein the control unit rotates a rotating shaft of the stepping motor by driving the stepping motor, thereby causing the housing to vibrate.
Dependencies are inferred from the claim text.