Angle sensor with reduction gear
AssigneeOelsch Kommanditgesellschaft
InventorKlaus Schulz
Life of this patent
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Abstract
In a flat housing (10) a stator (12) is concentrically arranged relative to an input shaft (16) supported in the housing (10). A rotor (14) is seated on the input shaft (16). A reducing gear (18) constructed as a play-free planetary gear is arranged within the flat housing (10) in an annular space (20) formed between the rotor (14) and the input shaft (16). The signal processing circuit is also accommodated in an annular space (60) within the housing (10). The input shaft (16) can be rotated through 360.degree. or more. During such rotation, the rotor (14) performs a rotational movement through a limited angle within which there is obtained a substantially linear angle signal due to the cooperation of the rotor (14) and the stator (12).
Claims8
Angle transmitter containing
- (a) a flat housing (10),
- (b) a stator (12) arranged in the flat housing (10),
- (c) a rotor (14) rotatably supported relative to the stator (12) in the housing (10) and cooperating with the stator (12) in the housing (10) and cooperating with the stator (12) through a limited angular range for producing an output signal dependent upon the rotational angle,
- (d) an input shaft (16) and
- (e) a reducing gear (18) by means of which the input shaft (16) is coupled to the rotor (14),
- characterized in that
- (f) the input shaft (16) is journalled in said flat housing (10),
- (g) the rotor (14) is rotatably supported on the input shaft (16), the rotor comprising a hub (38) rotatably supported at the input shaft (16) adjacent the external toothing (22) of the input shaft (16) by means of two rolling bearings (40, 42), as well as an annular, disc-shaped central portion (44) adjoining the end of the hub (38) which is adjacent the external toothing (22), the rotor further including a circumferential portion (46) of basic cylindrical shape and which adjoins the central portion (44) along the circumference thereof on the side remote from the hub (38) and comprises the internal toothing,
- (h) the reducing gear (18) is arranged within the flat housing (10) in an annular space (20) formed between the rotor (14) and the input shaft (16),
- (i) the reducing gear containing an external toothing (22) at the input shaft (14) as well as an internal toothing (24) at the rotor (14) concentric relative to the input shaft (16) and spaced therefrom and
- (j) in the housing (10), rotatably supported gear means (26) mesh with the external toothing (22) of the input shaft (16), on the one hand, and the internal toothing (24) of the rotor (14), on the other hand, the gear means protruding into the annular space (20) bounded by the circumferential portion (46), the central portion (44) and the input shaft (16).
Dependencies are inferred from the claim text.