Tension element position sensor

摘要

The tension element position sensor includes three housing elements, wherein the two outer housing elements are configured pot shaped with a base towards a center housing component, wherein one element is the spring motor and the other is the rotation angle sensor. Thus the rotation angle sensor includes two Hall sensors, wherein an encoder magnet rotates as a function of the rotation of the winding drum opposite to the faces of the Hall sensors on the face side of one respective gear of two gears meshing with one another. Herein the arrangement of the gears and circuit boards in the receiver of this lateral housing component is of particular importance. Also the spring motor can be completely preassembled and stored in a closed manner.

主权项

1. A tension element position sensor (1), comprising:
a tension element (3) wound up on a winding drum (2), in particular a cable or a band, wherein the winding drum is preloaded through a spring (4) in a wind up direction; a rotation angle sensor (6) directly or indirectly coupled to the shaft (5) of the winding drum (2) and rotationally fixed thereto, wherein the rotation angle sensor (6) detects complete revolutions and also detects partial revolutions; and a housing, wherein the housing includes a first, a second and a third housing component (8a, b, c) with a pass-through in an axial direction arranged in sequence to one another in axial direction of the cable drum, wherein the second housing component (8b) in which the winding drum (2) is arranged has a substantially open pass-through in axial direction (10); and wherein each of the first and third housing components (8a, c) join the second component at the face side each are essentially pot shaped, wherein a base of the pot is oriented towards the second housing component (8b) and the pot shaped first and third housing components (8a, c) each have a small central opening in axial direction (10) and bolt openings (9) at corners of the edge; and wherein the first and third housing component (8a, c) each are closed at their outer face through attached covers (12).