To provide a rotation angle detection device having a simple configuration capable of detecting rotation of an object to be detected at 360 degrees or more.SOLUTION: A rotation angle detection device 10 has a mounting unit to which an object to be detected 11 is attached, and a first teeth 38 arranged on an outer peripheral surface, and has a cylindrical or cylindrical first gear 20 that rotates a first rotation axis 26 as a center together with the object to be detected 11 and a second tooth 45 having a larger number of teeth than the number of rows of the first tooth 38, and is provided with a second gear 40 that rotates as a center a second rotating shaft 44 in which the second tooth 45 engages with the first tooth 38 and intersects the first rotating shaft 26, and a sensor 70 that detects the rotation angle of the second gear 40, and the first tooth 38 is longer than the circumference of the first gear 20 and extends in a circumferential direction while spirally inclined with respect to a direction parallel to the first rotation axis 26.SELECTED DRAWING: Figure 1
【課題】被検出物の回転を360度以上、検出することができる簡単な構成の回転角度検出装置を提供する。【解決手段】回転角度検出装置10は、被検出物11が取り付けられる取付部、及び、外周面に配設された第1歯38を有し、且つ、前記被検出物11と共に第1回転軸26を中心に回転する円柱形状又は円筒形状の第1歯車20と、前記第1歯38の条数よりも歯数が多い第2歯45を有し、且つ、前記第2歯45が前記第1歯38と噛み合って前記第1回転軸26に対して交差する第2回転軸44を中心に回転する第2歯車40と、前記第2歯車40の回転角度を検出するセンサ70と、を備え、前記第1歯38は、前記第1歯車20の円周よりも長く、前記第1回転軸26に平行な方向に対して螺旋状に傾斜しながら周方向に延びている。【選択図】図1
ROTATION ANGLE DETECTION DEVICE
回転角度検出装置
2021-03-11
Patent
Electronic Resource
Japanese