# US 2013/0154623 A1 · Position detector device

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- Number: US 2013/0154623 A1
- Document ID: US20130154623A1
- Status: Published application
- Kind: A1
- Application number: 13/819,683
- Filed: 2011-07-19
- Published: 2013-06-20
- Earliest claimed: 2010-08-27
- Assignees: Nippon Seiki Co., Ltd.
- Inventors: Masaru Iwahashi
- Web page: https://patentgrep.com/patent/US20130154623A1

## CPC

- G01B 7/30: for measuring angles or tapers; for testing the alignment of axes
- B62K 23/04: Twist grips
- G01D 3/028: mitigating undesired influences, e.g. temperature, pressure
- G01D 5/145: {influenced by the relative movement between the Hall device and magnetic fields (see G01R33/06)}
- G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

## Abstract

Provided is a position detector device capable of suppressing the effect of external magnetic fields on precision in detection. A position detector device (1) comprises: a subject to be detected (4a), which rotates along with the rotation of a handle grip (3) that is disposed on a handlebar (2); a detector unit (5) that detects the subject to be detected (4a); and a case (7) which houses the subject to be detected (4a) and the detector (5). The subject to be detected (4a) is treated as a magnetic cylindrical body, the detector unit (5) is treated as a magnetic detector unit (5) that detects changes in magnetism. A support member (6) rotatably supports the subject to be detected (4a), and further comprises a housing member (65) that houses the detector unit (5) on the interior circumference side of the subject to be detected (4a).

## Claims

### Claim 1

A position detector device comprising:
a subject to be detected, which rotates with the rotation of a handle grip disposed in a handlebar;
a detector unit which detects the subject to be detected; and
a case which houses the subject to be detected and the detector unit,
wherein:
the subject to be detected is formed as a magnetic cylindrical body;
the detector unit is formed as a magnetic detector unit which detects a change in magnetism; and
a support member which rotatably supports the subject to be detected and includes a housing member in which the detector unit is disposed is provided in an inner circumference side of the subject to be detected.

### Claim 2 (depends on 1)

The position detector device according to claim 1, wherein the detector unit is formed by a magnetic detector element which is surface-mounted on a circuit board.

### Claim 3 (depends on 1)

The position detector device according to claim 1, wherein the subject to be detected is held by a holder member and the holder member is rotatably disposed in the support member.

### Claim 4 (depends on 3)

The position detector device according to claim 3, wherein the subject to be detected is formed by a magnet and is cylindrical in shape.