公开(公告)号：US20250115083A1

公开(公告)日：2025-04-10

申请号：US18729203

申请日：2022-02-22

Applicant: HITACHI ASTEMO, LTD.

Inventor： Kenji YOSHIHARA ,  Hiroyuki ABE ,  Fumio YUKI ,  Takeo HOSOKAWA

IPC: B60C23/06

Abstract: The present disclosure provides a strain detection device capable of downsizing and improvement in strain detection accuracy as compared with the conventional functional components without hindering deformation of a tire. An aspect of the present disclosure includes a housing 110 bonded to an inner peripheral surface Ti of a tire T via an elastic adhesive EA, and a recess portion 111c provided on an end surface 111e of the housing 110 facing the inner peripheral surface Ti of the tire T. The strain detection device 100 includes the strain detection element 120 that is disposed at the center part of the recess portion 111c and detects strain of the tire T via the elastic adhesive EA, and the elastic member 130 that is disposed in the inner peripheral edge part of the recess portion 111c and protrudes toward the inner peripheral surface Ti of the tire T relative to the end surface 111e of the housing 110. The elastic adhesive EA is filled in a space between the bottom surface 111b of the recess portion 111c and the inner peripheral surface Ti of the tire T inside the elastic member 130.

公开(公告)号：US20240118174A1

公开(公告)日：2024-04-11

申请号：US18271984

申请日：2021-09-17

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroyuki ABE ,  Tsukasa TAKAHASHI ,  Kenji YOSHIHARA ,  Takeo HOSOKAWA

IPC: G01M17/02 ,  G01K1/14

CPC classification number: G01M17/02 ,  G01K1/14

Abstract: The present disclosure provides a sensor for tires capable of measuring a physical quantity including a temperature of a tire. An aspect of the present disclosure is a sensor for tires including: a base portion 5 fixed to an inside of a tire T and in contact with the tire T, and a sensor chip 7 including a tire temperature detection unit that detects the temperature of the tire T through the base portion 5.

公开(公告)号：US20240416927A1

公开(公告)日：2024-12-19

申请号：US18702944

申请日：2021-10-21

Applicant: HITACHI ASTEMO, LTD.

Inventor： Fumio YUKI ,  Takeo HOSOKAWA ,  Kenji YOSHIHARA ,  Atsuo SOMA ,  Hiroyuki ABE

IPC: B60W40/12 ,  B60W40/105

Abstract: A physical quantity detecting device (10) detects a plurality of different physical quantities on the basis of an output signal waveform. A strain sensor (3) as one sensor element outputs a sensor signal waveform (15) having a reference level (151), a positive level positively changing from the reference level (151), and a negative level negatively changing from the reference level (151). An estimating unit (4) estimates a first physical quantity corresponding to a peak value (152) of the positive level and a second physical quantity corresponding to a peak value (153) of the negative level on the basis of the sensor signal waveform (15) output by the strain sensor (3).

公开(公告)号：US20240085253A1

公开(公告)日：2024-03-14

申请号：US18275625

申请日：2021-08-31

Applicant: Hitachi Astemo, Ltd.

Inventor： Kenji YOSHIHARA ,  Hiroyuki ABE ,  Tsukasa TAKAHASHI ,  Takeo HOSOKAWA

IPC: G01L1/22

CPC classification number: G01L1/2231 ,  B60C2019/004

Abstract: An object of the present invention is to provide a strain amount detection device capable of accurately detecting deformations, in multiple directions, of a tire by one strain measuring element. A strain amount detection device according to the present invention includes a disk-shaped base member that holds a strain measuring element, in which the base member acts as a strain body by transmitting strain of a tire to the strain measuring element.

公开(公告)号：US20240053229A1

公开(公告)日：2024-02-15

申请号：US18269658

申请日：2021-08-30

Applicant: Hitachi Astemo, Ltd.

Inventor： Fumio YUKI ,  Takeo HOSOKAWA ,  Kenji YOSHIHARA ,  Tsukasa TAKAHASHI ,  Hiroyuki ABE

IPC: G01M17/02 ,  B60C23/04 ,  B60C23/18 ,  B60C23/06

CPC classification number: G01M17/02 ,  B60C23/0488 ,  B60C23/18 ,  B60C23/064

Abstract: An object of the present invention is to mitigate an influence of a physical quantity other than strain of a tire on a measurement result of a strain sensor and to improve measurement accuracy of the strain sensor. A strain amount detection device according to the present invention calculates an estimation value of a load applied to a tire by using data describing a relationship among an actually measured strain amount, a tire air pressure, a vehicle speed, a tire temperature, and a tire load.