Patents by Inventor Masanao Sugisawa
Masanao Sugisawa 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).
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Patent number: 11335490Abstract: An electromagnetic coil through which current is passed to generate a magnetic flux, a fixed core, a movable core, a magnetic spring disposed between the cores and, and a yoke are provided. The magnetic spring includes a magnetic substance, and biases the movable core in a direction in which the movable core is separated from the fixed core in a Z direction. Additionally, the magnetic spring includes a leaf spring member including the magnetic substance and spirally wound, and a central portion of the magnetic spring is located biased toward one side in the Z direction compared to a peripheral portion of the magnetic spring. When the movable core is attracted to the access position, the magnetic spring is prevented from being deformed to a minimum spring length corresponding to a width of the leaf spring member.Type: GrantFiled: May 11, 2020Date of Patent: May 17, 2022Assignees: SOKEN, INC., DENSO CORPORATION, DENSO ELECTRONICS CORPORATIONInventors: Yoshitaka Nishiguchi, Takahiro Soki, Masanao Sugisawa
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Patent number: 11270851Abstract: An electromagnetic relay has a contact device and an electromagnet device. An electromagnetic relay has stators which are a pair of rod-like members, and a mover. The mover may face the side of the stator. A housing supports the stator and accommodates the mover. A yoke is fixed to the housing so as to face the movable facing surface and contains a soft magnetic material.Type: GrantFiled: May 31, 2019Date of Patent: March 8, 2022Assignees: DENSO CORPORATION, DENSO ELECTRONICS CORPORATIONInventors: Yoshitaka Nishiguchi, Takahiro Soki, Masanao Sugisawa, Kentaro Yamaguchi
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Patent number: 11158476Abstract: An electromagnetic relay includes: an exciting coil; a movable core driven by the exciting coil; a movable contactor having a first movable contact and a second movable contact to operate with the movable core; a first fixed terminal having a first fixed contact with which the first movable contact abuts when the movable contactor is moved by energizing the exciting coil; and a second fixed terminal having a second fixed contact with which the second movable contact abuts when the movable contactor is moved by energizing the exciting coil. An inclination angle of a central axis of the first movable contact with respect to a central axis of the first fixed contact and an inclination angle of a central axis of the second movable contact with respect to a central axis of the second fixed contact are inclined in opposite directions from each other.Type: GrantFiled: March 21, 2019Date of Patent: October 26, 2021Assignees: DENSO ELECTRONICS CORPORATION, DENSO CORPORATIONInventors: Masanao Sugisawa, Yoshitaka Nishiguchi, Takahiro Soki
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Patent number: 11031203Abstract: A contact point device includes a first contactor, an oscillation supporting portion, and a second contactor. The first contactor has an outer side surface shaped in a column that surrounds a central axis. The oscillation supporting portion supports the first contactor to allow the central axis to oscillate. The second contactor is disposed opposite to the first contactor. One of the first contactor and the second contactor includes a plurality of first contact portions provided to surround the central axis on a plane perpendicular to the central axis, and the other includes a second contact portion provided to protrude toward a space surrounded by the plurality of the first contact portions. The second contact portion has a contact surface which is a curved surface exposed toward the space to surround the central axis.Type: GrantFiled: November 2, 2017Date of Patent: June 8, 2021Assignees: DENSO ELECTRONICS CORPORATION, TOYOTA JIDOSHA KABUSHIKIKAISHAInventors: Masanao Sugisawa, Makoto Motono
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Patent number: 10991531Abstract: 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.Type: GrantFiled: March 20, 2019Date of Patent: April 27, 2021Assignees: DENSO CORPORATION, SOKEN, INC., DENSO ELECTRONICS CORPORATIONInventors: Yoshitaka Nishiguchi, Shota Iguchi, Takahiro Soki, Hiroaki Murakami, Masanao Sugisawa
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Publication number: 20200381204Abstract: A contact point device includes a first contactor, an oscillation supporting portion, and a second contactor. The first contactor has an outer side surface shaped in a column that surrounds a central axis. The oscillation supporting portion supports the first contactor to allow the central axis to oscillate. The second contactor is disposed opposite to the first contactor. One of the first contactor and the second contactor includes a plurality of first contact portions provided to surround the central axis on a plane perpendicular to the central axis, and the other includes a second contact portion provided to protrude toward a space surrounded by the plurality of the first contact portions. The second contact portion has a contact surface which is a curved surface exposed toward the space to surround the central axis.Type: ApplicationFiled: November 2, 2017Publication date: December 3, 2020Inventors: Masanao SUGISAWA, Makoto MOTONO
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Publication number: 20200273615Abstract: An electromagnetic coil through which current is passed to generate a magnetic flux, a fixed core, a movable core, a magnetic spring disposed between the cores and, and a yoke are provided. The magnetic spring includes a magnetic substance, and biases the movable core in a direction in which the movable core is separated from the fixed core in a Z direction. Additionally, the magnetic spring includes a leaf spring member including the magnetic substance and spirally wound, and a central portion of the magnetic spring is located biased toward one side in the Z direction compared to a peripheral portion of the magnetic spring. When the movable core is attracted to the access position, the magnetic spring is prevented from being deformed to a minimum spring length corresponding to a width of the leaf spring member.Type: ApplicationFiled: May 11, 2020Publication date: August 27, 2020Applicants: SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.Inventors: Yoshitaka NISHIGUCHI, Takahiro SOKI, Masanao SUGISAWA
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Publication number: 20200035433Abstract: An electromagnetic relay has a contact device and an electromagnet device. An electromagnetic relay has stators which are a pair of rod-like members, and a mover. The mover may face the side of the stator. A housing supports the stator and accommodates the mover. A yoke is fixed to the housing so as to face the movable facing surface and contains a soft magnetic material.Type: ApplicationFiled: May 31, 2019Publication date: January 30, 2020Applicants: DENSO CORPORATION, ANDEN CO., LTD.Inventors: Yoshitaka NISHIGUCHI, Takahiro SOKI, Masanao SUGISAWA, Kentaro YAMAGUCHI
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Patent number: 10535483Abstract: 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.Type: GrantFiled: February 26, 2018Date of Patent: January 14, 2020Assignees: SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.Inventors: Yoshitaka Nishiguchi, Takahiro Soki, Hiroaki Murakami, Masanao Sugisawa
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Publication number: 20190295796Abstract: An electromagnetic relay includes: an exciting coil; a movable core driven by the exciting coil; a movable contactor having a first movable contact and a second movable contact to operate with the movable core; a first fixed terminal having a first fixed contact with which the first movable contact abuts when the movable contactor is moved by energizing the exciting coil; and a second fixed terminal having a second fixed contact with which the second movable contact abuts when the movable contactor is moved by energizing the exciting coil. An inclination angle of a central axis of the first movable contact with respect to a central axis of the first fixed contact and an inclination angle of a central axis of the second movable contact with respect to a central axis of the second fixed contact are inclined in opposite directions from each other.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Masanao SUGISAWA, Yoshitaka NISHIGUCHI, Takahiro SOKI
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Publication number: 20190221392Abstract: 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.Type: ApplicationFiled: March 20, 2019Publication date: July 18, 2019Applicants: DENSO CORPORATION, SOKEN, INC., ANDEN CO., LTD.Inventors: Yoshitaka NISHIGUCHI, Shota IGUCHI, Takahiro SOKI, Hiroaki MURAKAMI, Masanao SUGISAWA
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Publication number: 20180247781Abstract: 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.Type: ApplicationFiled: February 26, 2018Publication date: August 30, 2018Applicants: SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.Inventors: Yoshitaka NISHIGUCHI, Takahiro SOKI, Hiroaki MURAKAMI, Masanao SUGISAWA
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Patent number: 9859077Abstract: A fixed core includes: a fixed core tapered portion having a diameter increased in an attraction direction; and a fixed core circular portion having a fixed outer diameter and extending in the attraction direction from an end of the fixed core tapered portion. A movable core includes a movable core tubular portion in which a movable core hole is defined. The movable core hole is a space into which the fixed core tapered portion and the fixed core circular portion can enter. The movable core tubular portion includes: a movable core cylindrical portion having a constant inner diameter; and a movable core tapered tubular portion having an inner diameter decreased from an end of the movable core cylindrical portion in a non-attraction direction.Type: GrantFiled: September 11, 2014Date of Patent: January 2, 2018Assignee: ANDEN CO., LTD.Inventors: Masanao Sugisawa, Takashi Ito, Makoto Kamiya, Mitsugu Fujiwara, Tomoaki Tanaka
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Publication number: 20160225565Abstract: A fixed core includes: a fixed core tapered portion having a diameter increased in an attraction direction; and a fixed core circular portion having a fixed outer diameter and extending in the attraction direction from an end of the fixed core tapered portion. A movable core includes a movable core tubular portion in which a movable core hole is defined. The movable core hole is a space into which the fixed core tapered portion and the fixed core circular portion can enter. The movable core tubular portion includes: a movable core cylindrical portion having a constant inner diameter; and a movable core tapered tubular portion having an inner diameter decreased from an end of the movable core cylindrical portion in a non-attraction direction.Type: ApplicationFiled: September 11, 2014Publication date: August 4, 2016Inventors: Masanao SUGISAWA, Takashi ITO, Makoto KAMIYA, Mitsugu FUJIWARA, Tomoaki TANAKA
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Patent number: 9190233Abstract: A solenoid device includes: at least one electromagnetic coil that generates a magnetic flux when the electromagnetic coil is energized; a yoke made of soft magnetic material, in which the magnetic flux flows; and a plurality of plungers, each of which includes at least a part made of soft magnetic material, and reciprocates when the electromagnetic coil is switched between energization and interruption of energization. The number of the plurality of plungers is larger than the number of the electromagnetic coil. The plurality of plungers reciprocate independently from each other.Type: GrantFiled: January 28, 2013Date of Patent: November 17, 2015Assignees: ANDEN CO., LTD., NIPPON SOKEN, INC.Inventors: Osamu Daitoku, Tomoaki Tanaka, Masanao Sugisawa, Ken Tanaka, Kiyonari Kojima
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Patent number: 8519811Abstract: In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited.Type: GrantFiled: May 24, 2012Date of Patent: August 27, 2013Assignee: Anden Co., Ltd.Inventors: Masanao Sugisawa, Shigeki Fujii, Hitoshi Sunohara
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Patent number: 8339222Abstract: An electromagnetic relay includes a coil, a movable member, first and second fixed contact supports each having first and second fixed contacts, and a movable body having first and second movable contacts. A third fixed contact is arranged on the second fixed contact support at a position away from a line passing through the first and second fixed contacts, and a third movable contact is arranged on the movable body. When the movable member is driven by electromagnetic force of the coil, the movable contacts contact the fixed contacts at a contact portion between the first fixed contact and the first movable contact, a contact portion between the second fixed contact and the second movable contact, and a contact portion between the third fixed contact and the third movable contact.Type: GrantFiled: November 30, 2011Date of Patent: December 25, 2012Assignee: Anden Co., Ltd.Inventor: Masanao Sugisawa
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Publication number: 20120256713Abstract: In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited.Type: ApplicationFiled: May 24, 2012Publication date: October 11, 2012Inventors: Masanao SUGISAWA, Shigeki Fujii, Hitoshi Sunohara
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Patent number: 8274345Abstract: An electromagnetic relay includes a coil, a movable member, first and second fixed contact supports each having first and second fixed contacts, and a movable body having first and second movable contacts. A third fixed contact is arranged on the second fixed contact support at a position away from a line passing through the first and second fixed contacts, and a third movable contact is arranged on the movable body. When the movable member is driven by electromagnetic force of the coil, the movable contacts contact the fixed contacts at a contact portion between the first fixed contact and the first movable contact, a contact portion between the second fixed contact and the second movable contact, and a contact portion between the third fixed contact and the third movable contact.Type: GrantFiled: February 12, 2010Date of Patent: September 25, 2012Assignee: Anden Co., Ltd.Inventor: Masanao Sugisawa
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Publication number: 20120235775Abstract: In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited.Type: ApplicationFiled: May 24, 2012Publication date: September 20, 2012Inventors: Masanao SUGISAWA, Shigeki Fujii, Hitoshi Sunohara