Draw wire sensor
AssigneeDana Motion Systems Italia S.R.L.
InventorsPier Paolo RINALDI, Matteo DALLAPICCOLA, MariaDomenica ROMANO
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Abstract
Systems and methods are herein provided for a draw wire sensor. In one example, a draw wire sensor comprises a shell comprising an input hole; a drum mounted to the shell and installed on a rotating shaft; a plurality of roller pin assemblies arranged around the drum; a draw wire configured to enter through the input hole and wind around the plurality of roller pins before winding around the drum; and a sensor device coupled to the rotating shaft and positioned to measure linear distances based on the winding of the draw wire around the drum.
Claims20
A draw wire sensor, comprising:
- a shell comprising an input hole;
- a drum mounted to the shell and installed on a rotating shaft;
- a plurality of roller pin assemblies arranged around the drum;
- a draw wire configured to enter through the input hole and wind around the plurality of roller pin assemblies before winding around the drum;
- and
- a sensor device coupled to the rotating shaft and positioned to measure linear distances based on the winding of the draw wire around the drum.
A displacement sensor of a vehicle comprising a movable part, comprising:
- a drum installed on a rotating shaft;
- a housing comprising a shell coupled to the drum, a face shell coupled to the shell, and a sensor housing coupled to the face shell, wherein the shell comprises an input hole;
- a plurality of roller pins coupled to the shell;
- a draw wire affixed to the drum and wound around the plurality of roller pins and around the drum, wherein the draw wire passes through the input hole of the shell;
- and
- a sensor device coupled to the rotating shaft and positioned to determine displacement of the movable part based on the winding of the draw wire around the drum.
A method of operation of a draw wire sensor in an application, comprising:
- winding and/or unwinding a draw wire around a drum in response to retraction and/or extension of a movable part of the application;
- and
- determining, based on the winding and/or unwinding of the draw wire, a displacement of the movable part, wherein:
- the draw wire sensor comprises a plurality of roller pin assemblies arranged along a circular path around the drum, wherein the draw wire is wound around the plurality of roller pin assemblies before being wound around the drum in a spiral pattern.
Dependencies are inferred from the claim text.