US 2013/0271122 A1Published application

Angle sensor

AssigneeAisan Kogyo Kabushiki Kaisha

InventorsHisashi KINO, Ryojiro KANEMITSU, Shinya SUZUKI, Kazuhiro NAKAMURA

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Abstract

An angle sensor includes a sensor rotor formed with a planar coil and a sensor stator including a multi-X type planar coil placed to face a surface of the sensor rotor. On a stator substrate of the sensor stator are provided forward-direction planar coils and reverse-direction planar coils, and positive and negative terminals adjacently arranged. The forward-direction and reverse-direction planar coils are connected in series through connecting wires. One of both ends of the series-connected planar coils is connected to the positive terminal through the wire and the other end is connected to the negative terminal through the wire. The wires are arranged along arrangement of the series-connected planar coils but in a range less than a full circle of the arrangement. A turn-back connecting wire extending from one end of the series of planar coils is arranged along the other connecting wire and connected to the negative terminal.

Claims10

Dependent claims

An angle sensor comprising:

a sensor rotor to be mounted on a rotary shaft and having a surface on which a planar coil is formed;
and
a sensor stator placed with a surface facing the surface of the sensor rotor,
wherein the sensor stator includes:
a stator substrate;
a plurality of forward-direction planar coils each wound in a spiral form in a forward direction and a plurality of reverse-direction planar coils each wound in a spiral form in a reverse direction opposite to the forward direction, the forward-direction planar coils and the reverse-direction planar coils being formed on the stator substrate and electrically connected so that the reverse-direction planar coils are in opposite phase to the forward-direction planar coils;
a positive terminal and a negative terminal provided to be connectable to an external device;
and
connecting wires including a turn-back connecting wire and other connecting wires,
wherein the forward-direction planar coils and the reverse-direction planar coils are respectively alternately arranged in a circumferential direction and connected in series through the connecting wires to form a series of planar coils having a first end and a second end, the first end being connected to the positive terminal through the other connecting wires and the second end being connected to the negative terminal through the turn-back connecting wire, and
wherein the connecting wires are placed along circumferential arrangement of the series of planar coils but in a range less than a full circle of the circumferential arrangement, and the turn-back connecting wire connected to the second end of the series of planar coils is placed to extend from the second end along the other connecting wires and connected to the positive terminal or negative terminal.

8 more elements

An angle sensor comprising:

a sensor rotor to be mounted on a rotary shaft and having a surface on which a planar coil is formed;
and
a sensor stator having a surface on which a planar coil is formed, the sensor stator being placed with the surface facing the surface of the sensor rotor,
wherein the sensor stator includes:
a stator substrate;
a plurality of forward-direction planar coils each wound in a spiral form in a forward direction and a plurality of reverse-direction planar coils each wound in a spiral form in a reverse direction opposite to the forward direction, the forward-direction planar coils and the reverse-direction planar coils being arranged in a circumferential direction on the stator substrate and electrically connected so that the reverse-direction planar coils are in opposite phase to the forward-direction planar coils;
and
connecting wires,
wherein the forward-direction planar coils and the reverse-direction planar coils are symmetric about a symmetry axis extending in a radial direction by passing a center in a circumferential direction, each of the planar coils including a first end and a second end,
wherein the forward-direction planar coils and the reverse-direction planar coils are connected in series through the connecting wires, and the first end and the second end of each of the planar coils connected in series are located on the symmetry axis.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/645,021Filed 4 Oct 2012
Priority: JP 2011-2221636 Oct 2011
Published: 17 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01B 7/30
Measuring arrangements characterised by the use of electric or magnetic techniques: for measuring angles or tapers; for testing the alignment of axes
G01D 5/00
Mechanical means for transferring the output of a sensing member
G01D 5/2291
Differentially influencing two coils: linear or rotary variable differential transformers having a single primary coil and two secondary coils
G01B
Measuring length, thickness or similar linear dimensions

Family

US 8,860,405 B2Related patent
US 2013/0271122 A1This patent

From the US filing history. Foreign family members aren’t listed.

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