Proterial, Ltd.

Kazuhiko Tomita

Kei Kawano

Kento Okuyama

A rotation detection device includes a sensor unit including a magnetic sensor and a housing portion covering the magnetic sensor. The magnetic sensor includes a plate-shaped detection portion including a magnetic detection element to detect a magnetic field from the detection target member and connection terminals extending out of the detection portion. The magnetic detection element includes a magnetoresistive effect element to detect a magnetic field in a direction perpendicular to a plate thickness direction of the detection portion. The sensor unit is positioned such that a fore-end portion of the detection portion of the magnetic sensor faces toward an axial end face of the detection target member, the fore-end portion being an end portion located opposite to the side where the connection terminals extend out.

Rotation detection device

A harness with sensor includes a sensor including a plurality of detection units to detect a physical quantity, a cable including a plurality of electric wires connected to the plurality of sensor units and a sheath collectively covering the plurality of electric wires, and a connector provided at an end portion of the cable opposite to the sensor. The connector includes a plurality of connector-connecting portions to respectively output detection signals of the plurality of sensor units.

Harness with sensor

An air gap of a rotation speed sensor is increased. A rotation speed sensor according to one embodiment includes: a sensor component having magnetic sensing elements; and a magnetic plate that is arranged between the sensor component and a magnet and that is made of a magnetic material. In a first direction that is a direction in which the sensor component, the magnetic plate and the magnet are arranged, the magnetic plate includes an opening that is formed at a position overlapping center of a line connecting respective centers of the magnetic sensing elements.

Rotation speed sensor

The present invention relates to a rotation detection apparatus configured to detect a rotation state of a gear based on a magnetic field change that occurs as the gear is rotated. The rotation detection apparatus includes: a first sensor portion and a second sensor portion each having a magnetic detection element and a covering member configured to cover the magnetic detection element; one permanent magnet arranged between the first sensor portion and the second sensor portion; and a housing portion configured to accommodate the first sensor portion, the second sensor portion and the permanent magnet.

Rotation detection apparatus

A rotation detection device includes a detected member being mounted to a rotating member and being configured to rotate integrally with the rotating member, and a sensor section being arranged to face the detected member, in which the sensor section includes two magnetic sensors, each of which includes a detection section having a magnetism detection element for detecting a magnetic field from the detected member, the two detection sections of the two magnetic sensors being arranged side-by side along a rotational axis line direction, and a housing portion comprising a resin mold provided to collectively cover the two magnetic sensors and having a facing surface facing the detected member. The two detection sections of the two magnetic sensors are separated each other. A minimum distance between the two detection sections of the two magnetic sensors is 0.05 mm or more and 2.00 mm or less. The resin mold enters into a space between the two detection sections of the two magnetic sensors.

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Tokyo, Japan

Kazuhiko Tomita