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Patent Agency Ranking
公开(公告)号：US20190250054A1
公开(公告)日：2019-08-15
申请号：US16329347
申请日：2018-02-16
Applicant: Komatsu Ltd.
Inventor： Masato Kageyama , Hiroki Shinozaki , Daigoh Fujii
CPC classification number: G01L5/223 , E02F9/20 , E02F9/2004 , G01B7/00 , G05G9/047 , G05G25/00 , H01H25/04
Abstract: An operation lever includes: a pair of rods disposed at point-symmetrical positions with respect to an operation axis; magnets disposed on the respective rods; and a pair of magnetic sensors disposed at line-symmetrical positions with respect to a second straight line perpendicular to a first straight line connecting centers of one of the rods and the other rod, on a plane perpendicular to the operation axis.
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2.发明申请STROKE DETECTION DEVICE, STROKE DETECTION METHOD, STROKE DETECTION SYSTEM, OPERATION LEVER UNIT, AND OPERATION LEVER STROKE DETECTION SYSTEM 审中-公开冲击检测装置，冲击检测方法，冲击检测系统，操作杆单元和操作杆检测系统公开(公告)号：US20150345991A1
公开(公告)日：2015-12-03
申请号：US14425428
申请日：2014-10-06
Applicant: KOMATSU LTD.
Inventor： Masato Kageyama , Yoshiyuki Nagaya , Hiroyuki Chikugo , Daigoh Fujii
CPC classification number: G01D5/14 , E02F9/2004 , F15B13/0424 , F15B19/005 , F16K11/185 , G01D5/145 , G05G9/047 , G05G2009/04755
Abstract: A stroke detection device includes: four rods provided, moveably along respective axial directions, side by side on a same circumference of a device body, the stroke detection device detecting a change in relative positions of the four rods at a time the rods perform a stroke with respect to the device body; a magnet disposed to each of the rods such that a magnetic field is generated between rods adjacent to each other on the circumference and that the magnetic field varies at a time the rods adjacent to each other on the circumference perform a stroke relatively; and magnetic field detection units disposed on at least three positions between the magnets adjacent to each other in the device body, each of the magnetic field detection unit detecting the magnetic field between the magnets and outputting an electric signal in accordance with the detected magnetic field.
Abstract translation: 行程检测装置包括：在装置主体的同一圆周上并排地设置有沿着各个轴向方向可动地设置的四个杆，所述行程检测装置检测在杆执行行程时四个杆的相对位置的变化 相对于装置体; 设置在每个杆上的磁体，使得在圆周上彼此相邻的杆之间产生磁场，并且磁场在圆周上彼此相邻的杆处相对地发生变化; 以及设置在所述装置主体中彼此相邻的磁体之间的至少三个位置的磁场检测单元，所述磁场检测单元中的每一个检测所述磁体之间的磁场，并根据所检测的磁场输出电信号。
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公开(公告)号：US10100946B2
公开(公告)日：2018-10-16
申请号：US15322214
申请日：2014-06-30
Applicant: Komatsu Ltd.
Inventor： Daigoh Fujii , Shuuji Hori , Masato Kageyama
Abstract: A stroke detection device for detecting, along a longitudinal direction, a stroke amount of a spool arranged in a valve main body. The stroke detection device includes: a device main body attached to the valve main body; a detection rod extending along the longitudinal direction of the spool, and movably arranged along the longitudinal direction inside the device main body, in a position where a tip end portion faces an end surface of the spool; a stroke detection unit configured to output a detection signal according to the stroke amount of the detection rod with respect to the device main body; and an attracting unit arranged in the tip end portion of the detection rod, the attracting unit being attracted to the end surface of the spool by magnetic force.
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公开(公告)号：US11079294B2
公开(公告)日：2021-08-03
申请号：US16329347
申请日：2018-02-16
Applicant: Komatsu Ltd.
Inventor： Masato Kageyama , Hiroki Shinozaki , Daigoh Fujii
Abstract: An operation lever includes: a pair of rods disposed at point-symmetrical positions with respect to an operation axis; magnets disposed on the respective rods; and a pair of magnetic sensors disposed at line-symmetrical positions with respect to a second straight line perpendicular to a first straight line connecting centers of one of the rods and the other rod, on a plane perpendicular to the operation axis.
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公开(公告)号：US20170152965A1
公开(公告)日：2017-06-01
申请号：US15322214
申请日：2014-06-30
Applicant: Komatsu Ltd.
Inventor： Daigoh Fujii , Shuuji Hori , Masato Kageyama
CPC classification number: F16K37/0041 , F15B2013/0409 , F16K3/24 , F16K11/07 , F16K37/0033 , G01B7/003 , G01B7/046
Abstract: A stroke detection device for detecting, along a longitudinal direction, a stroke amount of a spool arranged in a valve main body. The stroke detection device includes: a device main body attached to the valve main body; a detection rod extending along the longitudinal direction of the spool, and movably arranged along the longitudinal direction inside the device main body, in a position where a tip end portion faces an end surface of the spool; a stroke detection unit configured to output a detection signal according to the stroke amount of the detection rod with respect to the device main body; and an attracting unit arranged in the tip end portion of the detection rod, the attracting unit being attracted to the end surface of the spool by magnetic force.
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