Rotary angle sensor

Patent metadata

Field	Value
Publication number	US-9322645-B2
Application number	US-201314411778-A
Country	US
Kind code	B2
Filing date	Jun 29, 2013
Priority date	Jul 4, 2012
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

A rotary angle sensor used to determine a relative angular position as compared to a reference position, comprising a housing ( 1 ), at least one rotor ( 3, 4 ) that is rotatably mounted inside said housing ( 1 ), one circuit board ( 2 ) containing electrical and/or electronic components as well as one or multiple stators corresponding to the number of used rotors ( 3, 4 ). The rotary angle sensor is supposed to be improved in such a manner that allows for an especially precise alignment of a circuit board inside a housing and an easy installation of said board. This is achieved by the circumstance that bearing surfaces ( 9 ) for the circuit board ( 2 ) are provided in the direct radial vicinity of the stator inside the housing ( 1 ) and that clamping structures ( 11 ) are radially aligned with the stator in order to position the circuit board ( 2 ).

First claim

The invention claimed is:

1. A rotary angle sensor used to determine a relative angular position as compared to a reference position, said rotary angle sensor comprising:
a housing,
at least one rotor that is rotatably mounted inside the housing and
a circuit board with electronic components as well as one or more stators corresponding to the amount of used rotors,
wherein bearing surfaces for the circuit board are provided in the direct radial vicinity of the stator inside the housing and wherein clamping structures are radially aligned with the stator in order to position the circuit board, and wherein there are sharable lamellae on every clamping structure.

2. The rotary angle sensor of claim 1 , wherein the clamping structures are “T-shaped” when viewed from above.

3. The rotary angle sensor of claim 1 , wherein there is a pocket around every clamping structure.

4. The rotary angle sensor of claim 1 wherein the circuit board is clamped in place between the housing and a second cover.

5. The rotary angle sensor of claim 1 wherein the circuit board exhibits a hole with additional auxiliary holes recessed around its perimeter.

Assignees

• Hella Kgaa Hueck & Co

Inventors

• Elpermann Thomas
• Peters Stefan

Classifications

• G01B21/22 Primary

  for measuring angles or tapers; for testing the alignment of axes · CPC title

• G01D11/245

  Housings for sensors · CPC title

• G01D5/24442 Primary

  by mounting means · CPC title