Magnetic sensor array

Patent metadata

Field	Value
Publication number	US-12399235-B2
Application number	US-202118009778-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	Jun 17, 2020
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A magnetic sensor array includes a plurality of magnetic sensors. The magnetic sensor includes a sensor housing body housing the sensor chip and first and second connection parts formed on the sensor housing body. The first connection part formed on one of adjacent magnetic sensors and the second connection part formed on the other one thereof are axially supported on each other to achieve mutual connection between the plurality of magnetic sensors. Thus, it is possible to vary the relative angle between two adjacent magnetic sensors with the first and second connection parts as an axis. This allows the plurality of magnetic sensors to be pressed perpendicularly against even a curved surface of an object to be measured, and the pressed state can be easily maintained.

First claim

What is claimed is:

1. A magnetic sensor array comprising a plurality of magnetic sensors each elongated in a sensitivity axis direction thereof,
wherein each of the magnetic sensors includes a substrate elongated in the sensitivity axis direction, a magnetism collector mounted on the substrate and elongated in the sensitivity axis direction, a sensor chip mounted on the substrate so as to face one end of the magnetism collector in the sensitivity axis direction, and a sensor housing body,
wherein the sensor housing body is larger in length in the sensitivity axis direction than the substrate so as to house therein the substrate, the magnetism collector, and the sensor chip,
wherein the sensor housing body has a sensor head positioned at another end of the magnetism collector in the sensitivity axis direction, first and second side surfaces parallel to the sensitivity axis direction and positioned on mutually opposite sides, a first connection part formed on the first side surface at a portion in a vicinity of the sensor head, and a pair of second connection parts formed on the second side surface at a portion in a vicinity of the sensor head, and
wherein the first connection part formed on one of adjacent magnetic sensors and the pair of second connection parts formed on other one thereof are axially supported on each other such that the first connection part is sandwiched between the pair of second connection parts to achieve mutual connection between the plurality of magnetic sensors.

2. The magnetic sensor array as claimed in claim 1 ,
wherein the plurality of magnetic sensors constitute a plurality of groups including first and second groups,
wherein the sensor housing body of at least one of the magnetic sensors belonging to the first group further has a third connection part,
wherein the sensor housing body of at least one of the magnetic sensors belonging to the second group further has a fourth connection part, and
wherein the first and second groups are mutually connected with the third and fourth connection parts axially supported on each other.

3. The magnetic sensor array as claimed in claim 2 ,
wherein the sensor housing body further has third and fourth side surfaces parallel to the sensitivity axis direction of the magnetic sensor and perpendicular to the first and second side surfaces and are positioned on mutually opposite sides,
wherein the third connection part is formed on the third side surface at a portion in a vicinity of the sensor head, and
wherein the fourth connection part is formed on the fourth side surface at a portion in a vicinity of the sensor head.

4. The magnetic sensor array as claimed in claim 1 , wherein a rotary shaft axially supporting the first connection part and the pair of second connection parts is a screw made of a non-magnetic material.

Assignees

• Tdk Corp

Inventors

• Shibuya Tomohiko

Classifications

• G01R33/091

  Constructional adaptation of the sensor to specific applications · CPC title

• G01R33/0011

  comprising means, e.g. flux concentrators, flux guides, for guiding or concentrating the magnetic flux, e.g. to the magnetic sensor · CPC title

• G01R33/0047

  Housings or packaging of magnetic sensors (packaging of semiconductor devices H10W99/00); Holders · CPC title

• G01R33/0005

  Geometrical arrangement of magnetic sensor elements; Apparatus combining different magnetic sensor types (G01R33/0206 takes precedence) · CPC title

• G01R33/0094 Primary

  Sensor arrays · CPC title