公开(公告)号：US20190221392A1

公开(公告)日：2019-07-18

申请号：US16359547

申请日：2019-03-20

申请人： DENSO CORPORATION ,  SOKEN, INC. ,  ANDEN CO., LTD.

发明人： Yoshitaka NISHIGUCHI ,  Shota IGUCHI ,  Takahiro SOKI ,  Hiroaki MURAKAMI ,  Masanao SUGISAWA

IPC分类号： H01H50/18 ,  H01H50/36 ,  H01H50/44 ,  H01H50/14

CPC分类号： H01H50/18 ,  H01H50/14 ,  H01H50/36 ,  H01H50/443 ,  H01H2205/002

摘要： A stationary core is in an exciting coil. A yoke covers an outer periphery and an axial end of the exciting coil to form a magnetic circuit and has an opening portion. The movable core faces the stationary core through the opening portion and is attracted toward the stationary core on energization of the exciting coil. A return spring urges the movable core against the attraction direction. A first gap is formed between the stationary core and the movable core on deenergization of the exciting coil. A second gap is formed between the yoke and the movable core on deenergization of the exciting coil. The second gap allows the yoke and the movable core to generate an attractive force therebetween on energization of the exciting coil. The return spring is made of a magnetic material to magnetically bridge the first gap or the second gap.

公开(公告)号：US20180247781A1

公开(公告)日：2018-08-30

申请号：US15904792

申请日：2018-02-26

申请人： SOKEN, INC. ,  DENSO CORPORATION ,  ANDEN CO., LTD.

发明人： Yoshitaka NISHIGUCHI ,  Takahiro SOKI ,  Hiroaki MURAKAMI ,  Masanao SUGISAWA

IPC分类号： H01H50/18 ,  H01H50/44 ,  H01H50/36

摘要： In an electromagnetic relay device, a stationary core is coaxially arranged in an exciting coil, and constitutes a magnetic circuit. A yoke is arranged to surround an outer periphery of the exciting coil and the second end of the exciting coil to constitute the magnetic circuit. The yoke has an opening that is located to be closer to the first end of the exciting coil than to the second end of the exciting coil, and that faces the stationary core. A movable core is located to face the stationary core via the opening. The movable core is pulled to the stationary core upon the exciting coil being energized. A return spring is made of a magnetic member that is volutely wound in an axial direction of the stationary core. The return spring urges the movable core to be separated from the stationary core.

公开(公告)号：US20180061544A1

公开(公告)日：2018-03-01

申请号：US15686504

申请日：2017-08-25

申请人： DENSO CORPORATION ,  ANDEN CO., LTD.

发明人： Ken TANAKA ,  Shota IGUCHI ,  Hiroaki MURAKAMI

IPC分类号： H01F7/08

CPC分类号： H01F7/1653 ,  H01F3/00 ,  H01F7/08 ,  H01F7/081 ,  H01F7/13 ,  H01F7/1607 ,  H01F41/02 ,  H01F2007/086 ,  H01H50/36 ,  H01H50/42 ,  H01H51/065

摘要： In a main magnetic circuit, first pulling force generated based on a first component of the magnetic flux flowing through the main magnetic path pulls a movable core in a reciprocation direction of the movable core. The first pulling force increases with a reduction of a dimension of the gap. In an auxiliary magnetic circuit, second pulling force generated based on the second component of the magnetic flux flowing through the auxiliary magnetic path pulls the movable core in the reciprocation direction of the movable core. In the auxiliary magnetic circuit, the second pulling force with the dimension of the gap being within a first range is changed to be higher than the second pulling force with the dimension of the gap being within a second range, the second range being smaller than the first range.