MAGNETIC SENSOR DEVICE

Abstract

The task is to provide a magnetic sensor in a simple way on a substrate together with other electrical and electronic components. [Suggested solution] A magnetic sensor device 3 comprises a sensor unit 4 and substrate-side connectors 24, 25. The sensor unit 4 includes a magnetic sensor, a yoke, and a housing 19. The magnetic sensor comprises a magnetic wire rod generating a large Barkhausen effect, a coil former in which the magnetic wire rod is arranged, a coil formed by winding an electrical wire around the coil former, a sensor-side connector provided in the left end section of the coil former, and a sensor-side connector provided in the right end section of the coil former. The magnetic sensor device 3 is mounted on the substrate 35 by attaching the substrate-side connectors 24, 25 to the substrate 35 and then connecting the sensor unit 4 to the substrate-side connectors 24, 25.

Claims

[1] A magnetic sensor device comprising: a magnetic sensor comprising a magnetic wire rod that generates a large Barkhausen effect, a coil body in which the magnetic wire rod is arranged, a coil formed by winding an electric wire around the coil body, a first connector provided at one end of the coil body, and a second connector provided at the other end of the coil body; a third connector detachably connected to the first connector; and a fourth connector detachably connected to the second connector, wherein the first connector comprises a first connecting portion and a first terminal to which one end of the electric wire is connected, the second connector comprises a second connecting portion and a second terminal to which the other end of the electrical wire is connected, the third connector comprises a third connecting portion connected to the first connecting portion and a third terminal making contact with the first terminal when the first connecting portion is connected to the third connecting portion, and the fourth connector comprises a fourth connecting portion connected to the second connecting portion, and a fourth terminal making contact with the second terminal upon connection of the second connecting portion to the fourth connecting portion. [2] The magnetic sensor device according to claim 1, wherein the coil is provided between one end and the other end of the coil body, the first connector is provided in the lower portion of one end of the coil body, the second connector is provided in the lower portion of the other end of the coil body, the third connector is provided on the upper surface of the substrate so that the first connecting portion can be connected to the third connecting portion from above the third connecting portion, the fourth connector is provided on the upper surface of the substrate so that the second connecting portion can be connected to the fourth connecting portion from above the fourth connecting portion, the third connector and the fourth connector are arranged to be spaced apart from each other on the upper surface of the substrate, and,once the first connecting portion has been connected to the third connecting portion from above the third connecting portion and the second connecting portion has been connected to the fourth connecting portion from above the fourth connecting portion, the magnet wire rod and the coil body extend parallel to the top surface of the substrate, and a space is formed between the lower portion of the outer peripheral surface of the coil and the top surface of the substrate. [3] The magnetic sensor device according to claim 1, wherein the third terminal connector and the fourth terminal connector are each surface-mounted on the substrate. [4] The magnetic sensor device according to claim 1, comprising a yoke that controls the direction of magnetic flux of an external magnetic field, the yoke being attached to the magnetic sensor. [5] The magnetic sensor device according to claim 1, comprising a yoke that controls the direction of the magnetic flux of an external magnetic field, and a housing in which the magnetic sensor is housed, the yoke is attached to the housing. [6] The magnetic sensor device according to claim 5, wherein the yoke is integrated into the housing by insert molding.

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