Multi-axis inertial force sensor

Patent metadata

Field	Value
Publication number	US-12461122-B2
Application number	US-202318297929-A
Country	US
Kind code	B2
Filing date	Apr 10, 2023
Priority date	Nov 6, 2020
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A multi-axis inertial force sensor includes a mounting material, blocks, and sensors. Each block has a positioning portion that determines its position relative to a contact partner. A pedestal is formed by an assembly of the blocks where the positions are determined relative to each other based on the positioning portion and where inclined surfaces are oriented in different directions. The sensors are respectively arranged on the inclined surfaces of the pedestal so that the main axes are oriented in different directions to detect vector components of inertial force corresponding to the main axes.

First claim

What is claimed is:

1 . A multi-axis inertial force sensor comprising:
a mounting material having an installation surface; a plurality of blocks arranged on the installation surface of the mounting material and respectively having inclined surfaces inclined with respect to the installation surface; and a plurality of sensors respectively arranged on the inclined surfaces of the plurality of blocks to detect an inertial force corresponding to main axes, wherein the plurality of blocks has a positioning portion that relatively determines a position of a contact partner in contact with at least one or more of the plurality of blocks, and forms a pedestal by an assembly of the plurality of blocks where positions are determined relative to each other based on the positioning portion and where the inclined surfaces are oriented in different directions, the plurality of sensors is respectively arranged on the inclined surfaces of the pedestal so that the main axes are oriented in different directions to detect vector components of the inertial force corresponding to the main axes, the plurality of blocks includes a first block, a second block, a third block, and a fourth block, each of which is a triangular prism having one end surface and an other end surface shaped in a right triangle and connected to the inclined surface, and one side surface and an other side surface connected to the inclined surface and the end surfaces, the inclined surface corresponds to an oblique side of the right triangle, the one side surface of the first block, the one side surface of the second block, the one side surface of the third block, and the one side surface of the fourth block are arranged on the installation surface, the other side surface of the first block and the other side surface of the second block face each other and are in contact with each other without a gap, the first block, the second block and the third block are arranged without a gap by contacting each other such that the one end surface of the second block and the other end surface of the first block face the inclined surface of the third block, and the first block, the second block and the fourth block are arranged without a gap by contacting each other such that the one end surface of the first block and the other end surface of the second block face the inclined surface of the fourth block.

2 . The multi-axis inertial force sensor according to claim 1 , wherein the pedestal is configured by arranging the plurality of blocks point-symmetrically with respect to a reference point on the installation surface of the mounting material.

3 . The multi-axis inertial force sensor according to claim 1 , wherein
the plurality of sensors is a single axis gyro sensor in which the main axis is parallel to a Z-axis direction perpendicular to the inclined surface so as to detect an angular velocity around the Z-axis direction as the inertial force.

4 . The multi-axis inertial force sensor according to claim 1 , wherein
the plurality of sensors is a single axis acceleration sensor in which the main axis is parallel to a Z-axis direction perpendicular to the inclined surface so as to detect an acceleration in the Z-axis direction as the inertial force.

5 . The multi-axis inertial force sensor according to claim 1 , wherein
the plurality of blocks has a triangular end surface connected to the inclined surface and a side surface connected to the inclined surface and the triangular end surface, and the pedestal is assembled such that the inclined surface of one of the plurality of blocks faces the inclined surface of the other block, the end surface of one of the plurality of blocks faces the end surface of the other block, the side surface of one of the plurality of blocks faces the side surface of the other block, the inclined surface of one of the plurality of blocks faces the end surface of the other block, the inclined surface of one of the plurality of blocks faces the side surface of the other block, or the end surface of one of the plurality of blocks faces the side surface of the other block.

6 . The multi-axis inertial force sensor according to claim 5 , wherein the plurality of blocks is assembled with no space therebetween.

7 . The multi-axis inertial force sensor according to claim 1 , wherein
the plurality of blocks has a triangular end surface connected to the inclined surface and a side surface connected to the inclined surface and the end surface, and the pedestal is formed in a chevron shape by an assembly of the plurality of blocks such that the end surface of one of the plurality of blocks faces the side surface of the other block, or the side surface of one of the plurality of blocks faces the side surface of the other block.

8 . The multi-axis inertial force sensor according to claim 1 , wherein
the plurality of blocks has a triangular end surface connected to the inclined surface and a side surface connected to the inclined surface and the end surface, and the pedestal has a rectangular parallelepiped shape in which the side surface of one of the plurality of blocks and the side surface of the other block are in contact with each other.

9 . The multi-axis inertial force sensor according to claim 5 , wherein the end surface of the plurality of blocks has a shape of an isosceles right triangle.

10 . The multi-axis inertial force sensor according to claim 9 , wherein the inclined surface corresponds to an oblique side of the isosceles right triangle.

11 . The multi-axis inertial force sensor according to claim 1 , wherein all of the plurality of blocks have the same shape.

12 . The multi-axis inertial force sensor according to claim 1 , wherein the plurality of blocks has a connecting portion to be connected to the contact partner in contact with at least one or more of the plurality of blocks.

13 . The multi-axis inertial force sensor according to claim 1 , wherein the plurality of blocks has an electronic component provided on the inclined surface.

14 . A multi-axis inertial force sensor comprising:
a mounting material having an installation surface; a plurality of blocks arranged on the installation surface of the mounting material and respectively having inclined surfaces inclined with respect to the installation surface; and a plurality of sensors respectively arranged on the inclined surfaces of the plurality of blocks to detect an inertial force corresponding to main axes, wherein the plurality of blocks has a positioning portion that relatively determines a position of a contact partner in contact with at least one or more of the plurality of blocks, and forms a pedestal by an assembly of the plurality of blocks where positions are determined relative to each other based on the positioning portion and where the inclined surfaces are oriented in different directions, the plurality of sensors is respectively arranged on the inclined surfaces of the pedestal so that the main axes are oriented in different directions to detect vector components of the inertial force corresponding to the main axes, the plurality of blocks includes a first block, a second block, a third block, and a fourth block, each of which is a triangular prism having one end surface and an other end surface shaped in a right triangle and connected to the inclined surface, and one side surface and an other side surface connected to the inclined surface and the end surfaces, the inclined surface corresponds to an oblique side of the right triangle, the one side surface of the first block, the one side surface of the second block, the one side surface of the

Assignees

• Denso Corp

Inventors

• Akashi Teruhisa
• Harada Shota
• Hata Yoshiyuki

Classifications

• G01C19/5783

  Mountings or housings not specific to any of the devices covered by groups G01C19/5607 - G01C19/5719 · CPC title

• G01P1/023

  for acceleration measuring devices · CPC title

• G01C19/00

  Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects · CPC title

• G01P15/18 Primary

  in two or more dimensions · CPC title