Patent ID: 11879754
Assignee: TDK CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A stroke sensor module comprising:
a moving element that is moved in a first direction;
a magnetic field generator that is moved in the first direction together with the moving element;
a magnetic field detecting element that detects movement of the magnetic field generator; and
a housing that houses a part of the moving element and the magnetic field generator, wherein
at least either the moving element or the magnetic field generator has a plurality of protrusions that are provided at different angular positions, as viewed in the first direction,
the housing has guide portions that guide the protrusions,
the moving element is independent of the magnetic field generator and is only in contact with the magnetic field generator in the first direction,
the housing has an inner space that houses a part of the moving element and the magnetic field generator, and a hole that communicates with the inner space,
the moving element has a rod that is movably inserted into the hole and a connecting portion that is attached to an end of the rod and that is in contact with the magnetic field generator, and
the connecting portion is housed in the inner space and the hole is sized so as not to allow the connecting portion to pass through the hole.