| 摘要 |
<p>The invention relates to a drive mechanism which can be used in a scanning device. The inventive mechanism comprises a device which converts a rotary motion produced by a motor member into a linear reciprocating motion. According to the invention, the aforementioned converter uses: a planetary rotating table ( 10 ) which is rotated by the output shaft ( 9 ) of the motor member ( 8 ), a planet pinion ( 15 ) which is pivot mounted to the table ( 10 ) and which meshes with a ring gear with a serrated bore ( 14 ) that is coaxial to the shaft ( 9 ) and solidly connected to the body of the motor member ( 8 ), and a drive member ( 19 ) which is borne by a support ( 18 ) that is solidly connected to the pinion ( 15 ). The mechanism can be used in the scanner of an ultrasound probe.</p> |
