To provide a constitution which can suppress the intrusion of magnetic foreign matters into the vicinity of a magnetism detection part, in a rotation position detection sensor which is arranged in a transmission case.SOLUTION: A rotation position detection sensor comprises: a rotor having a magnet, and a holder in which the magnet is fixed to an external peripheral part, and which is fixed to a shaft at an internal periphery in the vicinity of a lever; a magnetism detection part arranged in the vicinity of the magnet at the outside in a radial direction with respect to the rotor; and a sensor case having a plate-shaped part covering the rotor and a side opposite to the lever of the magnetism detection part, and an outer wall part extending to the lever side from an external periphery of the plate-shaped part, and formed with a hole which is inserted with the shaft at the plate-shaped part. Then, the holder has a recess which is recessed to the lever side from the side opposite to the lever over an entire periphery at an internal peripheral part, and the sensor case has a cylindrical part extending from an outer edge of the hole, and intruding into the recess.SELECTED DRAWING: Figure 4
【課題】変速機ケース内に配置されるものにおいて、磁気検出部近傍に磁性異物が進入するのを抑制可能な構成を提供する。【解決手段】磁石と磁石が外周部に固定されると共にレバー近傍で内周がシャフトに固定されるホルダとを有するロータと、ロータに対して径方向外側で磁石に近接配置される磁気検出部と、ロータおよび磁気検出部のレバーとは反対側を覆う板状部および板状部の外周からレバー側に延出される外壁部を有し、板状部にシャフトが挿通される孔が形成されたセンサケースとを備える。そして、ホルダは、内周部に全周に亘ってレバーとは反対側からレバー側に窪む凹部を有し、センサケースは、孔の外縁から延出されて凹部に進入する筒状部を有する。【選択図】図4
ROTATION POSITION DETECTION SENSOR
回転位置検出センサ
2020-10-08
Patent
Elektronische Ressource
Japanisch
IPC: | F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein |
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