DIRECT-ACTING ROTATION DETECTOR, DIRECT-ACTING ROTATION DETECTOR UNIT AND DIRECT-ACTING ROTATION DRIVING DEVICE

PROBLEM TO BE SOLVED: To provide a direct-acting rotation detector capable of suppressing reduction in detection accuracy of a rotational position of a mobile even in the case where a rotary scale that is coaxial with the mobile is tilted by tilting the mobile.SOLUTION: A direct-acting rotation detector 17 configured to detect displacement of an output shaft 2 comprises: a direct-acting position detection part 20 including a direct-acting scale 76 including a magnetization pattern 79 for direct-acting position detection on a peripheral wall surface 76a that is turned in a radial direction, and a first magnetic detection element 91 which faces the magnetization pattern 79 for direct-acting position detection in the radial direction and detects a change of a magnetic field; and a rotational position detection part 19 including a rotary scale 55 including a magnetization pattern 57 for rotational position detection on a plane 55a that is turned in an axial direction X, and a magnetic resistance element 86 which faces the magnetization pattern 57 for rotational position detection in the axial direction X and detects a change of a magnetic field. The direct-acting scale 76 is moved in the axial direction X together with the output shaft 2, and the rotary scale 55 is coaxially rotated together with the output shaft 2 at a predetermined position in the axial direction X.SELECTED DRAWING: Figure 6 【課題】移動体の傾斜によって移動体と同軸の回転スケールが傾斜した場合でも、移動体の回転位置の検出精度が低下することを抑制できる直動回転検出器を提供すること。【解決手段】出力軸２の変位を検出する直動回転検出器１７は、径方向を向く周壁面７６ａに直動位置検出用着磁パターン７９を備える直動スケール７６と、径方向から直動位置検出用着磁パターン７９に対向して磁界の変化を検出する第１磁気検出素子９１とを備える直動位置検出部２０、および、軸線方向Ｘを向く平面５５ａに回転位置検出用着磁パターン５７を備える回転スケール５５と、軸線方向Ｘから回転位置検出用着磁パターン５７に対向して磁界の変化を検出する回転位置検出用磁気抵抗素子８６とを備える回転位置検出部１９を有する。直動スケール７６が出力軸２とともに軸線方向Ｘに移動し、回転スケール５５が軸線方向Ｘの所定の位置で出力軸２とともに同軸に回転する。【選択図】図６