Patents by Inventor Yuichiro HIRAI
Yuichiro HIRAI 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: 11867239Abstract: A damper device includes: an input element coupled to an engine via a clutch; an intermediate element; an output element coupled to an input shaft of a transmission; a first elastic body that is disposed between the input element and the intermediate element; and a second elastic body that is disposed between the intermediate element and the output element and that acts in series with the first elastic body. When a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J2, and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is JTM, 0.12?J2/(J2+JTM)?0.5 is satisfied.Type: GrantFiled: September 12, 2019Date of Patent: January 9, 2024Assignee: AISIN CORPORATIONInventors: Masaki Wajima, Akihiro Nagae, Yuichiro Hirai
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Publication number: 20230139575Abstract: Provided is a sensor device being a signal processing device, including: a capacitor; a sensor unit configured to wirelessly transmit, in a case in which electric power of a predetermined amount or more is accumulated in the capacitor, a first signal (SG1) through use of the electric power accumulated in the capacitor; a reception unit configured to receive a radio wave transmitted from a power transmission device being an external device; and a transmission antenna functioning as a second transmission unit, the transmission antenna being configured to wirelessly transmit, in response to reception of the radio wave, a response signal (SG3) being a second signal generated based on the received radio wave without using the electric power accumulated in the capacitor.Type: ApplicationFiled: October 27, 2022Publication date: May 4, 2023Inventors: Fumiyasu Utsunomiya, Takakuni Douseki, Hisashi Nishikawa, Fumiya Nishimura, Yuichiro Hirai, Ami Tanaka
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Publication number: 20210364047Abstract: A damper device includes: an input element coupled to an engine via a clutch; an intermediate element; an output element coupled to an input shaft of a transmission; a first elastic body that is disposed between the input element and the intermediate element; and a second elastic body that is disposed between the intermediate element and the output element and that acts in series with the first elastic body. When a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J2, and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is JTM, 0.12?J2/(J2+JTM)?0.5 is satisfied.Type: ApplicationFiled: September 12, 2019Publication date: November 25, 2021Applicant: AISIN AW CO., LTD.Inventors: Masaki WAJIMA, Akihiro NAGAE, Yuichiro HIRAI
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Patent number: 10895302Abstract: In a damper device, a dynamic damper is coupled to a first intermediate member, first and second inner-side springs that act in series with each other are straight coil springs disposed between a second intermediate member and a driven member so that outward movement of the springs in a radial direction of the damper device is restricted at respective both ends, and a gap is formed between each body portion of the first and the second inner-side springs and the second intermediate member or a spring abutment portion of the driven member.Type: GrantFiled: April 20, 2015Date of Patent: January 19, 2021Assignee: AISIN AW CO., LTD.Inventors: Kazuyoshi Ito, Akiyoshi Otsuki, Yuichiro Hirai, Masaki Wajima
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Patent number: 10302170Abstract: A dynamic damper is coupled to an intermediate member of a damper device. A drive member of the damper device has additional abutment portions coupled to end portions of vibration absorption springs of the dynamic damper before both first and second inter-element stoppers operate. The second inter-element stoppers operate before the first inter-element stoppers operate and at least by the time when the additional coupling portions are coupled to end portions of the vibration absorption springs. Outer springs and the vibration absorption springs act in parallel to transfer torque after the additional coupling portions are coupled to end portions of the vibration absorption springs.Type: GrantFiled: February 27, 2015Date of Patent: May 28, 2019Assignee: AISIN AW CO. LTD.Inventors: Kazuyoshi Ito, Keizo Araki, Yuichiro Hirai, Masaki Wajima, Makoto Ueno, Yuji Kanyama, Kotaro Tsuda
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Patent number: 10072728Abstract: A cushioning member between plate bodies of a mass body and at end portions, in the circumferential direction, so as not to rotate relative to the plate bodies. The peripheral edges, on both sides in the width direction, of the outer peripheral surfaces of the cushioning member's first and second side portions abutting against a support member, along with swing of the mass body, are chamfered, reducing the possibility that the cushioning member enters in a clearance between the side surfaces of the support member and the plate bodies when the cushioning members' first side portion and the support member abut, or when the cushioning member's second side portion and the support member abut, along with swing of the mass body, suppressing damage to the cushioning member.Type: GrantFiled: August 6, 2014Date of Patent: September 11, 2018Assignee: AISIN AW CO., LTD.Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai
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Patent number: 10030739Abstract: A damper device includes a dynamic damper that has third springs coupled to an intermediate member and that also has, as a mass body coupled to the third springs, a turbine runner and a coupling member etc. The third springs of the dynamic damper are disposed so as to overlap both in the axial and radial directions of the damper device second springs that have higher rigidity than first springs and that are disposed inward of the first springs to transfer torque between a drive member and a driven member.Type: GrantFiled: January 30, 2014Date of Patent: July 24, 2018Assignees: AISIN AW CO., LTD., AISIN AW INDUSTRIES CO., LTD.Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Tomonori Kinoshita, Aki Ogawa, Masahiro Hata
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Patent number: 10024385Abstract: A damper device has a dynamic damper that includes a mass body and vibration absorption springs that couple the mass body and an intermediate member to each other. The vibration absorption springs are arranged side by side with outer springs in the circumferential direction. The mass body has spring abutment portions that abut against end portions of the vibration absorption springs. The intermediate member has first outer spring abutment portions that abut against end portions of the outer springs and second outer spring abutment portions that abut against end portions of the vibration absorption springs on the radially inner side with respect to the spring abutment portions. The first outer spring abutment portions extend toward the radially outer side with respect to the second outer spring abutment portions.Type: GrantFiled: February 19, 2015Date of Patent: July 17, 2018Assignee: AISIN AW CO., LTD.Inventors: Kazuyoshi Ito, Keizo Araki, Makoto Ueno, Yuichiro Hirai, Masaki Wajima, Yuji Kanyama, Kotaro Tsuda
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Patent number: 9915318Abstract: A centrifugal-pendulum vibration absorbing device disposed within a liquid chamber that stores a liquid, the centrifugal-pendulum vibration absorbing device having a support member coupled to a rotary element that is rotated by power from a drive device; and a mass body supported by the support member so as to be swingable. An order of vibration of the mass body is determined on the basis of an order of vibration to be damped generated by the drive device in consideration of at least a force caused by a centrifugal liquid pressure generated within the liquid chamber along with rotation of the drive device to act on the mass body.Type: GrantFiled: August 6, 2015Date of Patent: March 13, 2018Assignees: AISIN AW CO., LTD., AISIN AW INDUSTRIES CO., LTDInventors: Yoshihiro Takikawa, Yoichi Oi, Hiroki Nagai, Takayuki Miyaoka, Yuichiro Hirai, Takuya Yoshikawa, Tomonori Kinoshita, Aki Ogawa
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Patent number: 9791019Abstract: An intermediate member of a damper device includes a plate portion that has spring abutment portions that abut against inner springs. Spring abutment portions of a coupling member of a dynamic damper extend from a fixed portion via a bent portion to be disposed in opening portions of the plate portion, and abut against end portions of third springs disposed in the opening portions such that the third springs are arranged side by side with the inner springs in the circumferential direction. The plate portion and the spring abutment portions at least partially overlap each other in the thickness direction. The axes of the inner springs and the third springs are included within the range of overlap between the plate portion and the spring abutment portions in the thickness direction.Type: GrantFiled: October 16, 2014Date of Patent: October 17, 2017Assignee: AISIN AW CO., LTD.Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Masahiro Hata
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Patent number: 9732824Abstract: A damper device 10 includes a dynamic damper 30 that has third springs SP3 coupled to an intermediate member 12 and that also has, as a mass body coupled to the third springs SP3, a turbine runner 5, a coupling member 31, etc. The third springs SP3 of the dynamic damper 30 are disposed so as to overlap both in the axial and radial directions of the damper device 10 second springs SP2 that are disposed inward of the first springs SP1 to transfer torque between a drive member 11 and a driven member 15. A plane PL including the axes of the third springs SP3 and perpendicular to the axis of the damper device 10 is included in the range of the thickness of spring contact portions 31c of the coupling member 31 in the axial direction of the damper device 10.Type: GrantFiled: January 30, 2014Date of Patent: August 15, 2017Assignees: AISIN AW CO., LTD., AISIN AW INDUSTRIES CO.Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Tomonori Kinoshita, Aki Ogawa, Masahiro Hata
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Publication number: 20170175849Abstract: A damper device has a dynamic damper that includes a mass body and vibration absorption springs that couple the mass body and an intermediate member to each other. The vibration absorption springs are arranged side by side with outer springs in the circumferential direction. The mass body has spring abutment portions that abut against end portions of the vibration absorption springs. The intermediate member has first outer spring abutment portions that abut against end portions of the outer springs and second outer spring abutment portions that abut against end portions of the vibration absorption springs on the radially inner side with respect to the spring abutment portions. The first outer spring abutment portions extend toward the radially outer side with respect to the second outer spring abutment portions.Type: ApplicationFiled: February 19, 2015Publication date: June 22, 2017Applicant: AISIN AW CO., LTD.Inventors: Kazuyoshi ITO, Keizo ARAKI, Makoto UENO, Yuichiro HIRAI, Masaki WAJIMA, Yuji KANYAMA, Kotaro TSUDA
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Publication number: 20170045113Abstract: In a damper device, a dynamic damper is coupled to a first intermediate member, first and second inner-side springs that act in series with each other are straight coil springs disposed between a second intermediate member and a driven member so that outward movement of the springs in a radial direction of the damper device is restricted at respective both ends, and a gap is formed between each body portion of the first and the second inner-side springs and the second intermediate member or a spring abutment portion of the driven member.Type: ApplicationFiled: April 20, 2015Publication date: February 16, 2017Applicant: AISIN AW CO., LTD.Inventors: Kazuyoshi ITO, Akiyoshi OTSUKI, Yuichiro HIRAI
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Publication number: 20160356340Abstract: A dynamic damper is coupled to an intermediate member of a damper device. A drive member of the damper device has additional abutment portions coupled to end portions of vibration absorption springs of the dynamic damper before both first and second inter-element stoppers operate. The second inter-element stoppers operate before the first inter-element stoppers operate and at least by the time when the additional coupling portions are coupled to end portions of the vibration absorption springs. Outer springs and the vibration absorption springs act in parallel to transfer torque after the additional coupling portions are coupled to end portions of the vibration absorption springs.Type: ApplicationFiled: February 27, 2015Publication date: December 8, 2016Applicant: AISIN AW CO. LTD.Inventors: Kazuyoshi ITO, Keizo ARAKI, Yuichiro HIRAI, Masaki WAJIMA, Makoto UENO, Yuji KANYAMA, Kotaro TSUDA
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Publication number: 20160208885Abstract: An intermediate member of a damper device includes a plate portion that has spring abutment portions that abut against inner springs. Spring abutment portions of a coupling member of a dynamic damper extend from a fixed portion via a bent portion to be disposed in opening portions of the plate portion, and abut against end portions of third springs disposed in the opening portions such that the third springs are arranged side by side with the inner springs in the circumferential direction. The plate portion and the spring abutment portions at least partially overlap each other in the thickness direction. The axes of the inner springs and the third springs are included within the range of overlap between the plate portion and the spring abutment portions in the thickness direction.Type: ApplicationFiled: October 16, 2014Publication date: July 21, 2016Applicant: AISIN AW CO., LTD.Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Masahiro HATA
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Publication number: 20160195159Abstract: A mass body that includes two weights that face each other via a support member is provided. Each of the two weights is formed with a recessed portion that is recessed from an outside surface toward an inside surface. An additional weight formed of a material that is higher in specific gravity than the weight is attached to the recessed portion. Consequently, the weight of the mass body can be increased without increasing the radial length or the thickness of the mass body (weights). As a result, the vibration damping effect can be improved while suppressing an increase in size of the device.Type: ApplicationFiled: August 6, 2014Publication date: July 7, 2016Applicant: AISIN AW CO., LTD.Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI
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Publication number: 20160160959Abstract: A cushioning member between plate bodies of a mass body and at end portions, in the circumferential direction, so as not to rotate relative to the plate bodies. The peripheral edges, on both sides in the width direction, of the outer peripheral surfaces of the cushioning member's first and second side portions abutting against a support member, along with swing of the mass body, are chamfered, reducing the possibility that the cushioning member enters in a clearance between the side surfaces of the support member and the plate bodies when the cushioning members' first side portion and the support member abut, or when the cushioning member's second side portion and the support member abut, along with swing of the mass body, suppressing damage to the cushioning member.Type: ApplicationFiled: August 6, 2014Publication date: June 9, 2016Applicant: AISIN AW CO., LTD.Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI
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Publication number: 20150354664Abstract: A damper device 10 includes a dynamic damper 30 that has third springs SP3 coupled to an intermediate member 12 and that also has, as a mass body coupled to the third springs SP3, a turbine runner 5, a coupling member 31, etc. The third springs SP3 of the dynamic damper 30 are disposed so as to overlap both in the axial and radial directions of the damper device 10 second springs SP2 that are disposed inward of the first springs SP1 to transfer torque between a drive member 11 and a driven member 15. A plane PL including the axes of the third springs SP3 and perpendicular to the axis of the damper device 10 is included in the range of the thickness of spring contact portions 31c of the coupling member 31 in the axial direction of the damper device 10.Type: ApplicationFiled: January 30, 2014Publication date: December 10, 2015Applicants: AISIN AW INDUSTRIES CO., LTD., AISIN AW CO., LTD.Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Tomonori KINOSHITA, Aki OGAWA, Masahiro HATA
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Publication number: 20150337934Abstract: A damper device includes a dynamic damper that has third springs coupled to an intermediate member and that also has, as a mass body coupled to the third springs, a turbine runner and a coupling member etc. The third springs of the dynamic damper are disposed so as to overlap both in the axial and radial directions of the damper device second springs that have higher rigidity than first springs and that are disposed inward of the first springs to transfer torque between a drive member and a driven member.Type: ApplicationFiled: January 30, 2014Publication date: November 26, 2015Applicants: AISIN AW INDUSTRIES CO., LTD., AISIN AW CO., LTD.Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Tomonori KINOSHITA, Aki OGAWA, Masahiro HATA
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Publication number: 20150337921Abstract: A centrifugal-pendulum vibration absorbing device disposed within a liquid chamber that stores a liquid, the centrifugal-pendulum vibration absorbing device having a support member coupled to a rotary element that is rotated by power from a drive device; and a mass body supported by the support member so as to be swingable. An order of vibration of the mass body is determined on the basis of an order of vibration to be damped generated by the drive device in consideration of at least a force caused by a centrifugal liquid pressure generated within the liquid chamber along with rotation of the drive device to act on the mass body.Type: ApplicationFiled: August 6, 2015Publication date: November 26, 2015Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Hiroki NAGAI, Takayuki MIYAOKA, Yuichiro HIRAI, Takuya YOSHIKAWA, Tomonori KINOSHITA, Aki OGAWA