公开(公告)号：US20200033383A1

公开(公告)日：2020-01-30

申请号：US16592827

申请日：2019-10-04

Applicant: ALPS ALPINE CO., LTD.

Inventor： Hiroyuki HEBIGUCHI ,  Manabu TAMURA

IPC: G01R15/20 ,  G01R19/00

Abstract: A current sensor has two magnetic shields, a target current path, an adjacent current path, and a magneto-electric conversion element. The target current path includes a target partial current path positioned in a spacing. The adjacent current path includes an adjacent partial current path separated from the target partial current path at least in a first direction. Each magnetic shield includes a near end positioned on the same side as the adjacent partial current path in the first direction. In the first direction, the magneto-electric conversion element is positioned between the near end and the center position of the magnetic shield in the first direction.

公开(公告)号：US20250147075A1

公开(公告)日：2025-05-08

申请号：US19014378

申请日：2025-01-09

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Keisuke NAKAYAMA ,  Hideaki TAKANO ,  Takashi KAWAHATA

IPC: G01R15/20 ,  G01R19/00

Abstract: A current sensor which suppresses deterioration of detection accuracy caused by high temperature of electronic components due to heat of a bus bar and is suitable for measurement of large current includes a bus bar through which a current to be measured flows, a magnetic detector detecting a magnetic field generated by the bus bar, and a case integrally formed with the bus bar and having a storage space storing the magnetic detector. The magnetic detector is spaced away from and faces the bus bar. The bus bar is on a first surface of the storage space defining the storage space and facing the magnetic detector. A low thermal conductivity material having a lower thermal conductivity than a resin-based material forming the case is provided between the bus bar and the magnetic detector to contact an opposing surface, on the bus bar, facing the magnetic detector.

公开(公告)号：US20240361358A1

公开(公告)日：2024-10-31

申请号：US18770062

申请日：2024-07-11

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Junichi HOSOGOE ,  Keisuke NAKAYAMA

IPC: G01R15/18 ,  B29C45/14 ,  B29K705/00 ,  B29L31/34 ,  G01R19/00

CPC classification number: G01R15/18 ,  G01R19/0092 ,  B29C45/14065 ,  B29C2045/14122 ,  B29C45/14336 ,  B29K2705/00 ,  B29K2995/0008 ,  B29L2031/34

Abstract: A current sensor includes a busbar extending in a direction, a magnetic sensor facing the busbar in a direction intersecting the direction in which the busbar extends, a magnetic shield having a base that faces the busbar, at least a portion of the base facing a side of the busbar opposite to a side where the magnetic sensor is disposed, and a case having an insert-molded section in which at least a part of the magnetic shield is insert-molded. The insert-molded section has holes (first holes), and in the holes (first holes), some portions of the magnetic shield are exposed as exposure portions (first exposure portions) and the exposure portions (first exposure portions) have rust-prevention properties. Such a current sensor has the rustproofed exposure portions and thus problems caused by rusting in the exposure portions in the magnetic shield can be prevented or reduced.

公开(公告)号：US20240272204A1

公开(公告)日：2024-08-15

申请号：US18536477

申请日：2023-12-12

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Akira MIYAJI ,  Chiaki UEDA

IPC: G01R15/20 ,  G01R19/00

CPC classification number: G01R15/20 ,  G01R19/0092

Abstract: A current sensor has a chassis, a magnetism detection element, and a bus bar through which a current under measurement flows. The current sensor is mounted on a circuit board in a state in which the chassis is inserted into an opening formed in the circuit board with current paths provided on a mounting surface and the bus bar is connected to the current paths. The bus bar has an incorporation portion placed in the interior of the chassis as well as externally connected portions extending from both ends of the incorporation portion, one from each side, toward the outside of the chassis. The externally connected portions are positioned above the bottom surface of the chassis in the up-down direction. The incorporation portion has an underneath portion positioned below the externally connected portions in the up-down direction.

公开(公告)号：US20240241156A1

公开(公告)日：2024-07-18

申请号：US18620579

申请日：2024-03-28

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Chiaki UEDA

IPC: G01R15/20

CPC classification number: G01R15/207

Abstract: A current sensor has a first bus bar, a second bus bar, and a third bus bar, which are formed in a plate shape, and also has a first magnetic sensing unit, a second magnetic sensing unit, and a third magnetic sensing unit placed so as to respectively face the first bus bar, second bus bar, and third bus bar. Each bus bar has a narrow-width portion with the relevant magnetic sensing unit placed so as to face it, and also has two wide-width portions. The second magnetic sensing unit, which senses a magnetic field generated from the second bus bar, and the third magnetic sensing unit, which senses a magnetic field generated from the third bus bar, are offset from their relevant narrow-width portions toward opposite sides in the Y-axis direction, when viewed along the Z-axis direction.