Patents by Inventor Isamu KIZAKI
Isamu KIZAKI 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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Publication number: 20230347983Abstract: In a vehicle side body structure, when a force that deforms a side door inward in a vehicle width direction acts on the side door, a second engagement section enters a clearance in the vehicle width direction of the side door, a first engagement section and the second engagement section respectively engage with a first engaged section and a second engaged section, and an engagement structure bent with the first engagement section serving as a fulcrum, so as to prevent the side door from flipping up.Type: ApplicationFiled: March 27, 2023Publication date: November 2, 2023Applicant: Mazda Motor CorporationInventors: Tomohito OKUYAMA, Kyohei YUKITA, Isamu KIZAKI, Kaori SUZUKI, Takuto FUKUSHIMA
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Publication number: 20230312019Abstract: A lower vehicle-body structure of a vehicle is provided with a frame member having a closed-cross section. The frame member comprises a first portion and a second portion. The first portion comprises a compression face portion and a pair of side face portions. The side face portion comprises a bending portion, a compression-side area which is positioned on a side of the compression face portion relative to the bending portion and where a compressive stress is generated when the bending load is applied, and a tension-side area which is positioned on a side away from the compression face portion relative to the bending portion and where a tensile stress is generated when the bending load is applied. The compression-side area is configured to have higher rigidity than the tension-side area.Type: ApplicationFiled: January 12, 2023Publication date: October 5, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Isamu KIZAKI, Takuto FUKUSHIMA, Masanori HONDA, Chikara KAWAMURA
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Publication number: 20230311998Abstract: A side sill constituting a vehicle body comprises a side sill outer and a side sill inner. Each of an upper-side side face portion (upper face portion) and a lower-side side face portion (lower face portion) of the side sill inner comprises a second bending portion (bending portion) being formed by each of the upper face portion and the lower face portion bent toward an inside of the side sill, an upper-side slant face portion and a lower-side slant portion which respectively extend toward the side sill outer in an oblique direction such that a width, in a vertical direction, of the side sill inner gradually increases, and a second upper face portion and a second lower face portion (vehicle-width-direction face portions) which respectively extend in a vehicle width direction toward an inward side, in the vehicle width direction, from the second bending portion.Type: ApplicationFiled: January 17, 2023Publication date: October 5, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Isamu KIZAKI, Takuto Fukushima, Masanori Honda, Chikara Kawamura
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Publication number: 20230311997Abstract: A side sill comprises a side sill outer and a side sill inner. Each of an upper-side side face portion (upper face portion) and a lower-side side face portion (lower face portion) of the side sill outer comprises a first bending portion bent toward an inside of the side sill. The side sill inner comprises an upper-side side face portion with a first upper face portion, an upper-side slant face portion and a second upper face portion and a lower-side side face portion with a first lower face portion, a lower-side slant face portion and a second lower face portion. The side sill inner comprises a pair of upper-and-lower second bending portions which are bent toward an inside of the side sill at respective positions between the second upper face portion and the upper-side slant face portion and between the second lower face portion and the lower-side slant face portion.Type: ApplicationFiled: January 13, 2023Publication date: October 5, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Isamu KIZAKI, Takuto Fukushima, Masanori Honda, Chikara Kawamura
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Patent number: 11299020Abstract: There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at three side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.Type: GrantFiled: July 15, 2020Date of Patent: April 12, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Masanori Honda, Tomohito Okuyama, Takehisa Kohira, Ryuji Nonaka, Toshiyuki Gendo, Ken Ueki, Isamu Kizaki, Eri Kaiki
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Patent number: 11254195Abstract: A vehicle-body structure of a vehicle comprises a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion, wherein the front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view, the reinforcement portions being made of a plate member.Type: GrantFiled: July 14, 2020Date of Patent: February 22, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Masanori Honda, Tomohito Okuyama, Takehisa Kohira, Ryuji Nonaka, Toshiyuki Gendo, Ken Ueki, Isamu Kizaki
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Patent number: 11254196Abstract: A vehicle-body structure of a vehicle comprises a front side door provided so as to open and close an opening portion for entrance which is formed by a vehicle-body frame member. The front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that at least part of the reinforcement portions overlaps with the vehicle-body frame member in a vehicle side view, the reinforcement portions being configured to reinforce the door panel portion such that when a collision load is inputted to the front side door in a vehicle side collision, a connection state of the door panel portion and the vehicle-body frame member is maintained.Type: GrantFiled: July 14, 2020Date of Patent: February 22, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Masanori Honda, Tomohito Okuyama, Takehisa Kohira, Ryuji Nonaka, Toshiyuki Gendo, Ken Ueki, Isamu Kizaki
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Patent number: 11235644Abstract: There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at two side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.Type: GrantFiled: July 15, 2020Date of Patent: February 1, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Eri Kaiki, Masanori Honda, Tomohito Okuyama, Ryuji Nonaka, Hideaki Fujii, Noboru Shouno, Daisuke Nakayama, Isamu Kizaki, Yuichi Sugimura, Taei Shibahara, Kaori Suzuki, Orie Tanaka
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Patent number: 11235646Abstract: A side door comprises a door panel portion and a reinforcement portion (a lower-side reinforcement portion and others). The door panel portion is provided to cover an opening portion for entrance and configured such that its peripheral part overlaps with an opening-portion-forming vehicle-body frame member (a side sill and others) in a vehicle side view. The reinforcement portion is provided at the peripheral part of the door panel portion such that it overlaps with the opening-portion-forming vehicle-body frame member in the vehicle side view, thereby reinforcing the peripheral part of the door panel portion against a collision load applied to the side door from a vehicle side. The reinforcement portion is provided at a portion of the peripheral part of the door panel portion which includes a part corresponding to the vehicle-width-direction-extending vehicle-body frame member (a first floor cross member and others).Type: GrantFiled: July 16, 2020Date of Patent: February 1, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Kaori Suzuki, Masanori Honda, Tomohito Okuyama, Ryuji Nonaka, Hideaki Fujii, Noboru Shouno, Daisuke Nakayama, Isamu Kizaki, Eri Kaiki, Yuichi Sugimura, Taei Shibahara, Orie Tanaka
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Publication number: 20210023919Abstract: A side door comprises a door panel portion and a reinforcement portion (a rear-side reinforcement portion and others). The reinforcement portion is provided at at least one of a corner portion positioned between a lower portion and a front-side portion of a peripheral part of the door panel portion and another corner portion positioned between the lower portion and a rear-side portion of the peripheral part of the door panel portion such that the reinforcement portion overlaps with a vehicle-body frame member in a vehicle side view. The reinforcement portion is provided with a curved portion at an inside part of the corner portion where the reinforcement portion is provided. The curved portion is configured to be curved convexly toward an outside part of the corner portion in the vehicle side view.Type: ApplicationFiled: July 16, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Kaori SUZUKI, Masanori HONDA, Tomohito OKUYAMA, Ryuji NONAKA, Hideaki FUJII, Noboru SHOUNO, Daisuke NAKAYAMA, Isamu KIZAKI, Eri KAIKI, Yuichi SUGIMURA, Taei SHIBAHARA, Orie TANAKA
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Publication number: 20210023920Abstract: A vehicle-body structure of a vehicle comprises a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion, wherein the front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view, the reinforcement portions being made of a plate member.Type: ApplicationFiled: July 14, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Masanori HONDA, Tomohito OKUYAMA, Takehisa KOHIRA, Ryuji NONAKA, Toshiyuki GENDO, Ken UEKI, Isamu KIZAKI
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Publication number: 20210023923Abstract: There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at three side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.Type: ApplicationFiled: July 15, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Masanori HONDA, Tomohito OKUYAMA, Takehisa KOHIRA, Ryuji NONAKA, Toshiyuki GENDO, Ken UEKI, Isamu KIZAKI, Eri KAIKI
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Publication number: 20210023921Abstract: A side door comprises a door panel portion and a reinforcement portion (a lower-side reinforcement portion and others). The door panel portion is provided to cover an opening portion for entrance and configured such that its peripheral part overlaps with an opening-portion-forming vehicle-body frame member (a side sill and others) in a vehicle side view. The reinforcement portion is provided at the peripheral part of the door panel portion such that it overlaps with the opening-portion-forming vehicle-body frame member in the vehicle side view, thereby reinforcing the peripheral part of the door panel portion against a collision load applied to the side door from a vehicle side. The reinforcement portion is provided at a portion of the peripheral part of the door panel portion which includes a part corresponding to the vehicle-width-direction-extending vehicle-body frame member (a first floor cross member and others).Type: ApplicationFiled: July 16, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Kaori SUZUKI, Masanori HONDA, Tomohito OKUYAMA, Ryuji NONAKA, Hideaki FUJII, Noboru SHOUNO, Daisuke NAKAYAMA, Isamu KIZAKI, Eri KAIKI, Yuichi SUGIMURA, Taei SHIBAHARA, Orie TANAKA
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Publication number: 20210024138Abstract: There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at two side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.Type: ApplicationFiled: July 15, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Eri KAIKI, Masanori HONDA, Tomohito OKUYAMA, Ryuji NONAKA, Hideaki FUJII, Noboru SHOUNO, Daisuke NAKAYAMA, Isamu KIZAKI, Yuichi SUGIMURA, Taei SHIBAHARA, Kaori SUZUKI, Orie TANAKA
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Publication number: 20210023922Abstract: A vehicle-body structure of a vehicle comprises a front side door provided so as to open and close an opening portion for entrance which is formed by a vehicle-body frame member. The front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that at least part of the reinforcement portions overlaps with the vehicle-body frame member in a vehicle side view, the reinforcement portions being configured to reinforce the door panel portion such that when a collision load is inputted to the front side door in a vehicle side collision, a connection state of the door panel portion and the vehicle-body frame member is maintained.Type: ApplicationFiled: July 14, 2020Publication date: January 28, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Masanori HONDA, Tomohito OKUYAMA, Takehisa KOHIRA, Ryuji NONAKA, Toshiyuki GENDO, Ken UEKI, Isamu KIZAKI
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Patent number: 9616939Abstract: There are provided a pair of diagonally-extending inclination members which are formed in a substantially X shape in a plan view and provided above or below a floor panel. Each of the pair of inclination members is configured to interconnect a connection portion of one of right-and-left side sills and a hinge pillar and a connection portion of the other of the right-and-left side sills and a center pillar. Thereby, a load-transmission efficiency between a front end of the above-described one of the right-and-left side sills and the other of the right-and-left side sills can be improved in the SOL or vehicle side collisions.Type: GrantFiled: December 11, 2015Date of Patent: April 11, 2017Assignee: MAZDA MOTOR CORPORATIONInventors: Hirotaka Natsume, Kenji Maruyama, Hidetaka Goto, Isamu Kizaki, Satoshi Nakamura, Kohji Hashida
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Publication number: 20160207572Abstract: There are provided a pair of diagonally-extending inclination members which are formed in a substantially X shape in a plan view and provided above or below a floor panel. Each of the pair of inclination members is configured to interconnect a connection portion of one of right-and-left side sills and a hinge pillar and a connection portion of the other of the right-and-left side sills and a center pillar. Thereby, a load-transmission efficiency between a front end of the above-described one of the right-and-left side sills and the other of the right-and-left side sills can be improved in the SOL or vehicle side collisions.Type: ApplicationFiled: December 11, 2015Publication date: July 21, 2016Applicant: MAZDA MOTOR CORPORATIONInventors: Hirotaka NATSUME, Kenji MARUYAMA, Hidetaka GOTO, Isamu KIZAKI, Satoshi NAKAMURA, Kohji HASHIDA
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Patent number: 8899662Abstract: A rear apron panel is provided between a suspension tower and a dash panel. A vertical branch brace is provided to extend upwardly from a front side frame along an inner face of a suspension tower to form a closed cross section with a rear portion of the suspension tower. A deformation restraint member interconnects the apron frame and the vertical branch brace. Accordingly, there is provided a vehicle-body front structure which can restrain the apron frame from deforming outwardly in the vehicle width direction in the vehicle frontal collision to prevent the dash panel from moving back into the vehicle compartment too much.Type: GrantFiled: January 13, 2012Date of Patent: December 2, 2014Assignee: Mazda Motor CorporationInventors: Hiroto Kido, Masanobu Fukushima, Isamu Kizaki, Satoshi Nakamura, Keizo Kawasaki, Manabu Hashimoto
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Patent number: 8662546Abstract: A vehicle bumper structure includes a pair of left and right crush cans, a bumper beam, an energy absorbing member and a bumper face. Each of the crush cans has an outside wall and an inside wall, the inside wall having higher longitudinal stiffness than the outside wall. When a full-wrap collision occurs at a speed below a specified speed limit, neither of the two crush cans crushes but the energy absorbing member and the bumper beam warp and absorb impact energy. When an offset collision occurs at a speed equal to or above the specified speed limit, on the other hand, one of the crush cans sufficiently crushes and absorbs impact energy in a reliable fashion.Type: GrantFiled: August 27, 2007Date of Patent: March 4, 2014Assignee: Mazda Motor CorporationInventors: Isamu Kizaki, Masahiro Asahi
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Publication number: 20120205944Abstract: A rear apron panel is provided between a suspension tower and a dash panel. A vertical branch brace is provided to extend upwardly from a front side frame along an inner face of a suspension tower to form a closed cross section with a rear portion of the suspension tower. A deformation restraint member interconnects the apron frame and the vertical branch brace. Accordingly, there is provided a vehicle-body front structure which can restrain the apron frame from deforming outwardly in the vehicle width direction in the vehicle frontal collision to prevent the dash panel from moving back into the vehicle compartment too much.Type: ApplicationFiled: January 13, 2012Publication date: August 16, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Hiroto KIDO, Masanobu FUKUSHIMA, Isamu KIZAKI, Satoshi NAKAMURA, Keizo KAWASAKI, Manabu HASHIMOTO