| 摘要 |
Encoder for detecting measured values which are dependent on the rotation angle of the shaft (42) of a motor or the like, comprising a rotor (28), which can be fixed on the shaft (42), and comprising a stator housing (10), which can be fixed by a bearing surface (54) on an attachment surface (46) of the motor and has a scanning means (18, 20) for detecting the relative rotational position of rotor (28) and stator, wherein, in the mounted state, the rotor (28) is fixed on the shaft (42) and the housing (10) is fixed on the attachment surface (46) in such a way that the rotor (28) and the scanning means (18, 20) have a defined axial distance (h), and wherein, for mounting purposes, firstly the encoder is pushed onto the shaft (42) until the housing (10) is held in a mounting auxiliary position with its bearing surface (54) at an axial distance from the attachment surface (46), said axial distance corresponding to the defined distance (h), then the rotor (28), in this mounting auxiliary position of the housing (10), is brought axially to bear against the scanning means (18) and is fixed on the shaft (42) and, finally, the housing (10) of the stator is moved by its bearing surface (54) by the defined distance (h) towards the attachment surface (46) into a mounting end position and is fixed on the attachment surface (46). The bearing surface (54) of the housing (10) of the stator has a shoulder (60) projecting beyond the plane of the bearing surface (54) by the height of the defined distance (h), wherein, in the mounting auxiliary position, the housing (10) bears against the attachment surface (46) by said shoulder (60), and wherein, in a mounting end position rotated about the axis of the encoder relative to the mounting auxiliary position, the shoulder (60) descends into a recessed receptacle (48) of the attachment surface (46), such that the housing (10) is displaced with the scanning means (18, 20) by the defined axial distance (h) axially relative to the rotor (28) fixed on the shaft (42).
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