| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanical 3D ultrasonic probe which correctly detects the origin position being a reference at the time of controlling oscillation of an ultrasonic transmission/reception part and decides the initial drive position of the ultrasonic transmission/reception part by setting the reduction ratio of a detection member so that the total rotation number of the detection member is equal to or less than one rotation even when the ultrasonic transmission/reception part is driven in a full-stroke manner.SOLUTION: An ultrasonic probe comprises an ultrasonic transmission/reception part 100 inside thereof, a housing 21 encapsulating an ultrasonic propagation liquid 22, a drive unit transmitting rotational driving force of a drive motor 1 to oscillate the ultrasonic transmission/reception part 100, and a detection unit detecting the origin position being a reference at the time of controlling the oscillation of the ultrasonic transmission/reception part 100. The detection unit detects the origin position O by taking out rotation from an intermediate member to which the drive unit transmits the rotational driving force, reducing the speed of rotation to transmit the rotation to a detection member 14 of the detection unit, and detecting the rotation of the detection member 14 with a sensor 13.SELECTED DRAWING: Figure 2 |
