Patents by Inventor Kazuo Kubono

Kazuo Kubono has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11456135
    Abstract: Examples of a relay are described, with which the characteristics of the relay such as the operating voltage can be prevented from changing, even when impact is applied to the relay. The relay has an electromagnet, an armature which pivots about a pivot axis by excitation of the electromagnet, a pressing member attached to a tip of the armature, and a terminal which is pressed by the pressing member, wherein the armature comprises a plate-like insertion part which extends in a direction parallel to the pivot axis, and a guide groove provided in the insertion part and which extends in a direction parallel to the pivot axis, and the pressing member comprises an enclosure which is open on one end, and a part of the enclosure is inserted into the guide groove.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: September 27, 2022
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo Kubono
  • Patent number: 11456136
    Abstract: Provided is a relay, with which an insulation distance can be maintained while preventing an increase in size of the relay. The relay has a coil, an iron core, an armature which moves by excitation of the coil, a contact terminal which displaces in accordance with the movement of the armature, a pressing member which is attached to the armature and which presses the contact terminal, and a base block having a wall arranged between a first area in which the coil and the iron core are arranged, and a second area in which the contact terminal and the pressing member are arranged, wherein the armature comprises a first portion arranged in the first area and a second portion extending from the first portion and arranged in the second area, and the pressing member is affixed to the second portion.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: September 27, 2022
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo Kubono
  • Patent number: 11398362
    Abstract: Provided is a terminal of a relay constituted by an assembly of a plurality of members, with which plastic deformation can be prevented, and a relay including the terminal. A movable terminal of the relay is constituted by an assembly of a first member having two legs, and a second member having a contact, wherein the second member has at least three holes, the first member has at least three protrusions which are individually inserted into and crimped in the at least three holes, and an intermediate hole among the at least three holes is arranged so as to be positioned on the side opposite the contact with respect to a straight line that contacts the edges of the outermost holes on the side close to the contact.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: July 26, 2022
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo Kubono
  • Patent number: 10854409
    Abstract: An electromagnetic relay includes a movable terminal including a movable contact, a fixed terminal including a fixed contact that faces the movable contact, first irons disposed on one of the fixed terminal and the movable terminal, and a second iron disposed on another one of the fixed terminal and the movable terminal such that the second iron at least partially overlaps both of the first irons.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: December 1, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Takuji Murakoshi, Kazuo Kubono
  • Publication number: 20200176207
    Abstract: Examples of a relay are described, with which the characteristics of the relay such as the operating voltage can be prevented from changing, even when impact is applied to the relay. The relay has an electromagnet, an armature which pivots about a pivot axis by excitation of the electromagnet, a pressing member attached to a tip of the armature, and a terminal which is pressed by the pressing member, wherein the armature comprises a plate-like insertion part which extends in a direction parallel to the pivot axis, and a guide groove provided in the insertion part and which extends in a direction parallel to the pivot axis, and the pressing member comprises an enclosure which is open on one end, and a part of the enclosure is inserted into the guide groove.
    Type: Application
    Filed: November 13, 2019
    Publication date: June 4, 2020
    Inventor: Kazuo Kubono
  • Publication number: 20200176206
    Abstract: Provided is a terminal of a relay constituted by an assembly of a plurality of members, with which plastic deformation can be prevented, and a relay including the terminal. A movable terminal of the relay is constituted by an assembly of a first member having two legs, and a second member having a contact, wherein the second member has at least three holes, the first member has at least three protrusions which are individually inserted into and crimped in the at least three holes, and an intermediate hole among the at least three holes is arranged so as to be positioned on the side opposite the contact with respect to a straight line that contacts the edges of the outermost holes on the side close to the contact.
    Type: Application
    Filed: November 21, 2019
    Publication date: June 4, 2020
    Inventor: Kazuo Kubono
  • Publication number: 20200176209
    Abstract: Provided is a relay, with which an insulation distance can be maintained while preventing an increase in size of the relay. The relay has a coil, an iron core, an armature which moves by excitation of the coil, a contact terminal which displaces in accordance with the movement of the armature, a pressing member which is attached to the armature and which presses the contact terminal, and a base block having a wall arranged between a first area in which the coil and the iron core are arranged, and a second area in which the contact terminal and the pressing member are arranged, wherein the armature comprises a first portion arranged in the first area and a second portion extending from the first portion and arranged in the second area, and the pressing member is affixed to the second portion.
    Type: Application
    Filed: November 20, 2019
    Publication date: June 4, 2020
    Inventor: Kazuo Kubono
  • Patent number: 10658141
    Abstract: An electromagnetic relay including: an electromagnet; a movable spring having a movable contact; a first terminal to which one end of the movable spring is connected; a second terminal having a fixed contact opposite to the movable contact; an actuator that rotates by excitation of the electromagnet, rotates the movable spring, and causes the movable contact to come in contact with the fixed contact or to separate from the fixed contact; a nonmagnetic card to be attached to the actuator; a plurality of magnetic members that sandwich the movable contact and the fixed contact, and apply a magnetic flux to the movable contact and the fixed contact to extend an arc; and a permanent magnet attached between the magnetic members.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 19, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Takuji Murakoshi, Kazuo Kubono, Daiei Iwamoto
  • Patent number: 10546707
    Abstract: An electromagnetic relay including: a fixed terminal that includes a fixed contact; a movable spring that includes a movable piece on which a first through-hole is formed; a conductive plate that includes a second through-hole; a movable contact that includes a head part that is in contact with and is separated from the fixed contact, and a leg part that is inserted into the first through-hole and the second through-hole; wherein the conductive plate is disposed between the head part and the movable spring, in a radial direction of the first through-hole and the second through-hole, the head part does not protrude from an outer edge of the conductive plate but protrudes from the outer edge of the movable piece.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 28, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo Kubono, Takuji Murakoshi
  • Publication number: 20190006139
    Abstract: An electromagnetic relay includes a movable terminal including a movable contact, a fixed terminal including a fixed contact that faces the movable contact, first irons disposed on one of the fixed terminal and the movable terminal, and a second iron disposed on another one of the fixed terminal and the movable terminal such that the second iron at least partially overlaps both of the first irons.
    Type: Application
    Filed: June 18, 2018
    Publication date: January 3, 2019
    Inventors: Takuji Murakoshi, Kazuo Kubono
  • Patent number: 10163588
    Abstract: An electromagnetic relay includes a base, a fixed contact terminal including a fixed contact, and fixed to the base, a movable contact terminal including a movable contact that contacts the fixed contact, an electromagnet that generates a magnetic field when an electric current flows through a coil wrapped around an iron core, an armature connected to the movable contact terminal, and moved by a magnetic force generated in the electromagnet, a yoke including a vertical part, and a horizontal part connected to the iron core, and a bottom plate formed of an insulator, and covering a surface of the horizontal part facing away from the iron core. The bottom plate includes a yoke insertion part into which the horizontal part is inserted in a direction parallel to the horizontal part.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: December 25, 2018
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo Kubono, Yoichi Hasegawa
  • Publication number: 20180130625
    Abstract: An electromagnetic relay including: a fixed terminal that includes a fixed contact; a movable spring that includes a movable piece on which a first through-hole is formed; a conductive plate that includes a second through-hole; a movable contact that includes a head part that is in contact with and is separated from the fixed contact, and a leg part that is inserted into the first through-hole and the second through-hole; wherein the conductive plate is disposed between the head part and the movable spring, in a radial direction of the first through-hole and the second through-hole, the head part does not protrude from an outer edge of the conductive plate but protrudes from the outer edge of the movable piece.
    Type: Application
    Filed: September 15, 2017
    Publication date: May 10, 2018
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo KUBONO, Takuji MURAKOSHI
  • Patent number: 9966214
    Abstract: An electromagnetic relay includes a spool in which a coil is wound around its outer peripheral surface, and a magnetic core is inserted in its inside; a yoke arranged along the spool; and an insulating member provided between a first member including the coil, and second members including a fixed contact portion, a movable contact portion, an armature and the yoke to contribute to insulation between the first member and the second members, wherein the insulating member is provided with an opening portion at a portion that does not face the second members, and the spool is inserted in the insulating member from the opening portion to be placed in the insulating member.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: May 8, 2018
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo Kubono
  • Publication number: 20180096810
    Abstract: An electromagnetic relay including: an electromagnet; a movable spring having a movable contact; a first terminal to which one end of the movable spring is connected; a second terminal having a fixed contact opposite to the movable contact; an actuator that rotates by excitation of the electromagnet, rotates the movable spring, and causes the movable contact to come in contact with the fixed contact or to separate from the fixed contact; a nonmagnetic card to be attached to the actuator; a plurality of magnetic members that sandwich the movable contact and the fixed contact, and apply a magnetic flux to the movable contact and the fixed contact to extend an arc; and a permanent magnet attached between the magnetic members.
    Type: Application
    Filed: September 8, 2017
    Publication date: April 5, 2018
    Applicant: Fujitsu Component Limited
    Inventors: Takuji MURAKOSHI, Kazuo Kubono, Daiei Iwamoto
  • Patent number: 9865420
    Abstract: An electromagnetic relay includes a fixed contact portion including a fixed contact; a movable contact portion including a movable contact that contacts the fixed contact; and an electromagnetic device that operates the movable contact portion so that the movable contact contacts the fixed contact, and includes an armature that adsorbs to a magnetic core surface of the electromagnetic device and operates the movable contact portion by rotating with respect to a fulcrum, a hinge spring that pushes a part of the armature at an opposite side of the magnetic core surface while interposing the fulcrum therebetween so that the armature moves away from the magnetic core surface, and a fixed member that fixes an end portion of the hinge spring while having outside of a side surface of the armature as a fixed position, and wherein the fixed member is configured to fix the end portion of the hinge spring by moving the hinge spring from an upper side to a lower side of the armature, when attaching the hinge spring.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 9, 2018
    Assignee: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo Kubono
  • Patent number: 9859078
    Abstract: An electromagnetic relay includes a fixed contact having a fixed contact plate and a fixed contact point mounted to the fixed contact plate, a movable contact having a movable contact plate and a movable contact point mounted to the movable contact plate, and an electromagnet device configured to move the movable contact so as to bring the movable contact point in contact with the fixed contact point, wherein a contact plate that is at least one of the fixed contact plate and the movable contact plate has a contact area, the contact area being thinner than other areas of the contact plate and having a penetrating hole formed therethrough, and the contact point of the contact plate has a head and a shaft, and wherein while the shaft is placed in the penetrating hole such that the head is mounted on a first surface of the contact area, an end of the shaft is deformed with a force at a second surface opposite the first surface to mount the contact point to the contact plate.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 2, 2018
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo Kubono, Yoichi Hasegawa
  • Patent number: 9793079
    Abstract: An electromagnetic relay includes a fixed contact, a movable contact corresponding to the fixed contact, a movable element that retains the movable contact and moves in a contacting direction and a separating direction relative to the fixed contact, an axial core coupled to the movable element, a movable core coupled to the axial core to move in the contacting direction and the separating direction relative to a movement of the axial core, a driving part that drives the movable core in the contacting direction, an urging part that exerts force to the axial core in the separating direction, and a constraining part that constrains the relative movement of the axial core in the separating direction.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: October 17, 2017
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo Kubono, Takashi Yuba, Yoichi Hasegawa, Takuji Murakoshi
  • Publication number: 20170162354
    Abstract: An electromagnetic relay includes a fixed contact having a fixed contact plate and a fixed contact point mounted to the fixed contact plate, a movable contact having a movable contact plate and a movable contact point mounted to the movable contact plate, and an electromagnet device configured to move the movable contact so as to bring the movable contact point in contact with the fixed contact point, wherein a contact plate that is at least one of the fixed contact plate and the movable contact plate has a contact area, the contact area being thinner than other areas of the contact plate and having a penetrating hole formed therethrough, and the contact point of the contact plate has a head and a shaft, and wherein while the shaft is placed in the penetrating hole such that the head is mounted on a first surface of the contact area, an end of the shaft is deformed with a force at a second surface opposite the first surface to mount the contact point to the contact plate.
    Type: Application
    Filed: June 22, 2015
    Publication date: June 8, 2017
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Kazuo KUBONO, Yoichi HASEGAWA
  • Publication number: 20170162353
    Abstract: An electromagnetic relay includes a fixed contact portion including a fixed contact; a movable contact portion including a movable contact that contacts the fixed contact; and an electromagnetic device that operates the movable contact portion so that the movable contact contacts the fixed contact, and includes an armature that adsorbs to a magnetic core surface of the electromagnetic device and operates the movable contact portion by rotating with respect to a fulcrum, a hinge spring that pushes a part of the armature at an opposite side of the magnetic core surface while interposing the fulcrum therebetween so that the armature moves away from the magnetic core surface, and a fixed member that fixes an end portion of the hinge spring while having outside of a side surface of the armature as a fixed position, and wherein the fixed member is configured to fix the end portion of the hinge spring by moving the hinge spring from an upper side to a lower side of the armature, when attaching the hinge spring.
    Type: Application
    Filed: July 16, 2015
    Publication date: June 8, 2017
    Applicant: FUJITSU COMPONENT LIMITED
    Inventor: Kazuo KUBONO
  • Publication number: 20170047182
    Abstract: An electromagnetic relay includes a spool in which a coil is wound around its outer peripheral surface, and a magnetic core is inserted in its inside; a yoke arranged along the spool; and an insulating member provided between a first member including the coil, and second members including a fixed contact portion, a movable contact portion, an armature and the yoke to contribute to insulation between the first member and the second members, wherein the insulating member is provided with an opening portion at a portion that does not face the second members, and the spool is inserted in the insulating member from the opening portion to be placed in the insulating member.
    Type: Application
    Filed: June 22, 2015
    Publication date: February 16, 2017
    Inventor: Kazuo KUBONO