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公开(公告)号：USRE48964E1
公开(公告)日：2022-03-08
申请号：US16448339
申请日：2019-06-21
Inventor： Katsutoshi Yamagata , Tsukasa Nishimura
Abstract: An electromagnetic relay includes an exciting coil, a pair of fixed contacts, a movable spring, a magnet, and a yoke in contact with the magnet. The pair of fixed contacts is arranged along a first direction. The movable spring comes into contact with or moves away from the fixed contacts in response to the turn on or off of current to the exciting coil. The magnet prolongs the arc generated between the fixed contacts and the movable spring. The magnet is adjacent to the fixed contacts along a second direction orthogonal to the first direction, and is adjacent to the exciting coil along a third direction orthogonal to the first direction and the second direction. The yoke is adjacent to the fixed contacts along the third direction in a state where the yoke is in contact with the magnet.
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公开(公告)号：US09711311B2
公开(公告)日：2017-07-18
申请号：US15074912
申请日：2016-03-18
Inventor： Katsutoshi Yamagata , Tsukasa Nishimura
CPC classification number: H01H50/56 , H01H9/443 , H01H50/18 , H01H50/38 , H01H50/546
Abstract: An electromagnetic relay includes an exciting coil, a pair of fixed contacts, a movable spring, a magnet, and a yoke in contact with the magnet. The pair of fixed contacts is arranged along a first direction. The movable spring comes into contact with or moves away from the fixed contacts in response to the turn on or off of current to the exciting coil. The magnet prolongs the arc generated between the fixed contacts and the movable spring. The magnet is adjacent to the fixed contacts along a second direction orthogonal to the first direction, and is adjacent to the exciting coil along a third direction orthogonal to the first direction and the second direction. The yoke is adjacent to the fixed contacts along the third direction in a state where the yoke is in contact with the magnet.
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公开(公告)号：US09530599B2
公开(公告)日：2016-12-27
申请号：US15073629
申请日：2016-03-17
Inventor： Katsutoshi Yamagata , Tsukasa Nishimura
CPC classification number: H01H50/56 , H01H50/28 , H01H50/30 , H01H2205/002
Abstract: An electromagnetic relay includes an electromagnet block, a pair of fixed contacts, a movable spring, and a stopper. The electromagnet block includes an exciter coil and an armature. The movable spring includes a fixed portion and a movable portion. The fixed portion is fixed to the electromagnet block. The movable portion contacts fixed contact and is separated from the fixed contacts in response to turning on and off of an energizing of the exciter coil. The stopper configured to restrict a movement of the movable portion. The armature is fixed to the movable portion and is displaced unitarily with the movable portion. The movable spring is configured to, upon turning on the energizing of the exciter coil, cause the movable portion to move, by magnetic force, in an approaching direction in which the movable portion approaches the fixed contacts with the fixed portion functioning as a fulcrum, and contact the fixed connection portions. The movable spring is configured to, upon turning off the energizing of the exciter coil, cause the movable portion to be separated, by restoring force, from the fixed contacts in a separating direction in which the movable portion is separated from the fixed contacts. The stopper is configured to, upon turning on the energizing of the exciter coil, contact the movable portion and reduce a moving speed of the movable portion in the approaching direction before the movable portion contacts the fixed contacts. The stopper is configured to, upon turning off the energizing of the exciter coil, contact the armature and reduce the moving speed of the movable portion in the separating direction.
Abstract translation: 电磁继电器包括电磁块，一对固定触点，可移动弹簧和止动器。 电磁铁块包括励磁线圈和电枢。 可动弹簧包括固定部分和可移动部分。 固定部固定在电磁铁块上。 响应于励磁线圈的通电导通和断开，可动部分接触固定触点并与固定触头分离。 所述止动件构造成限制所述可动部的运动。 电枢固定在可动部分上，与可动部分一体移动。 可动弹簧构造成在接通励磁线圈的通电时，通过磁力使可动部分沿着作为支点的固定部分的可动部接近固定触点的接近方向移动， 并与固定连接部分接触。 可移动弹簧构造成在关闭激励线圈的激励时，通过恢复力使可动部分从可动部分与固定触头分离的分离方向从固定触头分离。 所述止动件构造成在所述励磁线圈的通电接通时，在所述可动部接触所述固定触点之前，使所述可动部接触所述可动部在接近方向上的移动速度。 止动件被构造成在关闭励磁线圈的通电时，接触电枢并减小可动部分在分离方向上的移动速度。
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Patent Agency Ranking
公开(公告)号：US10991532B2
公开(公告)日：2021-04-27
申请号：US16103323
申请日：2018-08-14
Inventor： Masahiro Ito , Tsukasa Nishimura
Abstract: A contact device includes: a contact block which includes a fixed contact, and a movable contactor including a movable contact formed to come into and out of contact with the fixed contact; a driving block including a driving shaft which moves the movable contactor, the driving block configured to drive the driving shaft so that the movable contact can come into and out of contact with the fixed contact; and a yoke disposed on one side of the movable contactor in a driving direction and fixed to the movable contactor. One of the yoke and the movable contactor includes a projection projected to the driving direction, and the other of the yoke and the movable contactor includes an insertion hole in which to insert the projection.
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公开(公告)号：US10090127B2
公开(公告)日：2018-10-02
申请号：US14392130
申请日：2014-06-27
Inventor： Masahiro Ito , Tsukasa Nishimura
Abstract: A contact device includes: a contact block which includes a fixed terminal including a fixed contact formed thereon, and a movable contactor including a movable contact formed thereon; and a driving block including a driving shaft to which the movable contactor is attached, the driving block configured to drive the movable contactor. The contact block includes: a biasing portion configured to bias the movable contactor toward one side in a driving shaft direction; and a yoke disposed at least on an opposite side of the movable contactor in the driving shaft direction while the movable contact is in contact with the fixed contact. The biasing portion includes a biasing end configured to make biasing force act on the movable contactor by pressing a member other than the yoke.
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公开(公告)号：US09640354B2
公开(公告)日：2017-05-02
申请号：US14423353
申请日：2013-08-20
Inventor： Tsukasa Nishimura , Ritsu Yamamoto
CPC classification number: H01H50/60 , H01H1/50 , H01H9/443 , H01H50/04 , H01H50/546 , H01H51/065
Abstract: In a contact device, rotational movement of a movable contactor with a yoke attached is regulated by the fact that the yoke abuts against a wall surface of a wall portion. In an event where the movable contactor with the yoke attached moves rotationally, the yoke is allowed to abut against only a wall surface in one region obtained by dividing the wall surface by a virtual line passing through a rotation center of the yoke.
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公开(公告)号：US10388478B2
公开(公告)日：2019-08-20
申请号：US15026434
申请日：2014-10-03
Inventor： Tsukasa Nishimura , Ryosuke Koeda
Abstract: An electromagnetic relay includes a contact device including a fixed terminal with a fixed contact formed, and a movable contactor with a movable contact formed to come into contact with and separate from the fixed contact. The contact device is stored in a housing. The electromagnetic relay further includes a terminal portion including a first terminal portion having a screw portion formed thereon, and a second terminal portion connected to the first terminal portion. The first terminal portion and the second terminal portion are configured to be electrically connected to each other at least in a state where a counterpart member connected to the terminal portion. A rotation restriction portion for restricting relative rotation between the first terminal portion and the second terminal portion is provided on at least one of the first terminal portion or the second terminal portion.
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公开(公告)号：US09443685B2
公开(公告)日：2016-09-13
申请号：US14720730
申请日：2015-05-22
Inventor： Ritsu Yamamoto , Tsukasa Nishimura
IPC: H01H3/00 , H01H50/58 , H01H1/32 , H01H50/54 , H01H51/00 , H01H50/14 , H01H50/60 , H01H1/20 , H01H1/50 , H01H50/30
CPC classification number: H01H50/58 , H01H1/20 , H01H1/32 , H01H1/50 , H01H50/14 , H01H50/305 , H01H50/546 , H01H50/60 , H01H51/00 , H01H2201/008
Abstract: Provided is a contact device in which all of three movable contacts can be securely brought into contact with fixed contacts. The contact device includes a fixed terminal 37 that has a fixed contact 35, a movable terminal 28 that moves toward and away from the fixed terminal 37 and has three movable contacts 31a, 31b, and 31c that are brought into contact with the fixed contact 35, and a pressing spring 33 that presses the movable terminal 28 and brings the movable contacts 31a, 31b, and 31c into contact with the fixed contacts 35 at a predetermined pressing force. The point of application of the pressing spring 33 is located in a triangle formed by internal tangents of the three movable contacts.
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