Patents by Inventor Chikara Kawamura

Chikara Kawamura 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).

  • Publication number: 20210213899
    Abstract: A shock absorbing member is provided having a sequential destruction capability and protection against electrolytic corrosion on fastening-fixing portions thereof to be fastened to a bumper reinforcement or a vehicle body. Embodiments include a shock absorbing member between a bumper reinforcement and a vehicle body, including a distal end portion fastened to the bumper reinforcement; a base end flange portion fastened to the vehicle body; and an absorbing member body extending in a vehicle front-rear direction and connecting the distal end portion and the base end flange portion. The absorbing member body includes a carbon fiber-glass reinforced plastic layer. Fastening-fixing portions of the distal end portion and the base end flange portion are composed of glass fiber reinforced plastic layers.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 15, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Taiki YOTSUYANAGI, Tsuyoshi NISHIHARA, Ryo SHIMODA, Chikara KAWAMURA, Tsuneki SHIMANAKA, Kota YOSHIDA
  • Publication number: 20210202924
    Abstract: A lithium-ion battery device comprises a housing, a battery cell stored inside the housing, and an adjacent member provided adjacently to and on a rearward side, in a vehicle longitudinal direction, of the battery cell. The battery cell comprises a cell case, an electrode body stored inside the cell case, and a pair of terminals. The cell case includes a first main face and a second main face which face to each other in the vehicle longitudinal direction. At least two gap-forming portions which respectively have a smaller area than the second main face and have a specified thickness of the vehicle longitudinal direction are arranged between the second main face and the adjacent member. The two gap-forming portions are provided to be spaced apart from each other in an inter-terminal direction of the battery cell.
    Type: Application
    Filed: September 17, 2020
    Publication date: July 1, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Wataru MASUDA, Teruhiko HANAOKA, Toshiki TAKAHASHI, Chikara KAWAMURA, Masanori HONDA
  • Publication number: 20210162939
    Abstract: An impact absorbing structure for a vehicle according to the present invention includes: a resin frame member extending in a vehicle front-rear direction and having an opening portion in a surface thereof on one side in a vehicle width direction; and a strut member disposed in the opening portion of the frame member. The frame member includes a frame body having the opening portion, and a rib protruding at least either upward or downward from the frame body and extending in the vehicle front-rear direction. The strut member is disposed between a pair of opening edges for defining an upper edge and a lower edge of the opening portion and at a position abuttable against the paired opening edges, when the frame member is deformed by input of a load at a time of oblique collision from upward or oblique collision from downward.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 3, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Chikara KAWAMURA, Tsuyoshi NISHIHARA, Kazutaka ISHIKURA, Hiroaki TAKESHITA, Tsuneki SHIMANAKA, Taiki YOTSUYANAGI, Yoshiaki MURAKAMI
  • Patent number: 10994680
    Abstract: Each impact-absorbing member has an open cross-sectional shape that is open to a first side of a vehicle width direction. Each impact-absorbing member includes an upper wall, a lower wall, a side wall extending between the upper wall and the lower wall, an upper flange portion extending upward from the upper wall, and a lower flange portion extending downward from the lower wall. Curved portions curved in the vehicle width direction in a protruding manner are formed in the side wall. The upper wall and the lower wall include a plurality of plate-shaped flat portions adjacent in the vehicle width direction, and step portions connecting the adjacent flat portions while forming a step in a vertical direction, respectively.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: May 4, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Chikara Kawamura
  • Publication number: 20200384934
    Abstract: A shock absorbing structure for a vehicle 1 is provided which includes a bumper beam 67 connecting together a pair of shock absorbing members 61, 61 made of a fiber-reinforced resin. The shock absorbing member 61 includes an upper wall portion 62a, a lower wall portion 62b, a side wall portion 62c having a recess 63, an upper flange portion 62d, and a lower flange portion 62e, and a vehicle-width-direction outer side is open. An outer edge portion 62o extends in a front-rear direction, an inner edge portion 62i extends in an inclined manner, and a width of each of the upper wall portion 62a and the lower wall portion 62b is wider on a rear side than a front side. Step portions 64 make an interval between the upper wall portion 62a and the lower wall portion 62b become narrower on a vehicle-width-direction inner side than the vehicle-width-direction outer side.
    Type: Application
    Filed: February 18, 2019
    Publication date: December 10, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Taiki YOTSUYANAGI, Hiroaki TAKESHITA, Chikara KAWAMURA, Tsuyoshi NISHIHARA
  • Publication number: 20200324823
    Abstract: An impact absorbing structure for a vehicle according to the present invention includes a frame member formed of a resin material. The frame member includes a closed cross sectional portion extending in a vehicle front-rear direction, and a rib protruding at least either upward or downward from the closed cross sectional portion and extending in the vehicle front-rear direction.
    Type: Application
    Filed: December 11, 2018
    Publication date: October 15, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Chikara KAWAMURA, Tsuyoshi NISHIHARA, Kazutaka ISHIKURA, Hiroaki TAKESHITA, Tsuneki SHIMANAKA, Taiki YOTSUYANAGI, Yoshiaki MURAKAMI
  • Patent number: 10604094
    Abstract: An impact absorbing member structure of a vehicle includes: a pair of left and right rear side frames; a pair of left and right crash cans containing a plurality of first carbon fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of rear side frames through the pair of crash cans. Each of the crash cans is formed as an open-section member including: a side wall portion extending in the forward/rearward direction; and a tip end wall portion continuous with the side wall portion and including an attaching portion to which the bumper reinforcement is attached.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: March 31, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Chikara Kawamura, Tsuneki Shimanaka, Hiroaki Takeshita, Tsuyoshi Nishihara, Takayuki Kimura, Kazutaka Ishikura
  • Patent number: 10479302
    Abstract: An impact absorbing structure includes an impact absorbing member made of CFRP, and the impact absorbing member includes a pair of left and right side wall portions and upper and lower coupling wall portions each coupling the side wall portions. Each of the pair of side wall portions includes a plurality of curved portions. Each of the curved portions is formed such that a leftward/rightward direction depth thereof decreases toward a front side. Each of the pair of side wall portions includes: a plurality of first carbon fibers arranged to extend in a forward/rearward direction and constituting most of reinforced fibers contained in the side wall portion; and a plurality of second carbon fibers arranged to extend in a direction intersecting with the first carbon fibers. The plurality of second carbon fibers are arranged at both thickness direction end vicinity parts of each of the side wall portions.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 19, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Chikara Kawamura, Taiki Yotsuyanagi, Hiroaki Takeshita, Tsuyoshi Nishihara, Tsuneki Shimanaka, Takayuki Kimura, Yoshiaki Murakami
  • Patent number: 10411374
    Abstract: A cable connection structural body is used for connecting a multi-core cable having a plurality of signal lines to a substrate, and the cable connection structural body includes a substrate fixation portion that is fixed to the substrate, and a cable holding portion that forms a space passing the plurality of signal lines therethrough between the cable holding portion and a surface of the substrate when the substrate fixation portion is fixed to the substrate.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 10, 2019
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Yukitaka Tanaka, Chikara Kawamura
  • Publication number: 20190270420
    Abstract: Each impact-absorbing member has an open cross-sectional shape that is open to a first side of a vehicle width direction. Each impact-absorbing member includes an upper wall, a lower wall, a side wall extending between the upper wall and the lower wall, an upper flange portion extending upward from the upper wall, and a lower flange portion extending downward from the lower wall. Curved portions curved in the vehicle width direction in a protruding manner are formed in the side wall. The upper wall and the lower wall include a plurality of plate-shaped flat portions adjacent in the vehicle width direction, and step portions connecting the adjacent flat portions while forming a step in a vertical direction, respectively.
    Type: Application
    Filed: October 24, 2017
    Publication date: September 5, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventor: Chikara KAWAMURA
  • Patent number: 10252750
    Abstract: Provided is a front side frame 2, comprising: a main frame 201; and reinforcing members 30, 40, 50 disposed inside the main frame 2, wherein the reinforcing member 30 includes partition wall portions 31b, 32d, 32e dividing a main closed cross-section C_m of the main frame 201 into a plurality of sub closed-cross sections c, the first to third partition wall portions 31b, 32d, 32e being respectively formed with compression-side ridges 31s, 32s, 32u vertically facing each other and able to come into contact with each other in a deformation of the front side frame 2, and tension-side ridges 31t, 32t, 32v arranged in the same manner.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: April 9, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuki Kodama, Masanori Honda, Chikara Kawamura
  • Patent number: 10214244
    Abstract: There are provided an outer panel, an inner panel, a second reinforcement provided in the main closed-cross section and cooperates with the outer panel to form a sub closed-cross section extending longitudinally, a bead portion formed at a portion of the inner panel which is located at a position corresponding to the second reinforcement, and configured to be a starting point causing bending of a front side frame toward the second reinforcement when a collision load is applied in a vehicle collision, and a second attaching member provided at a position located on a front-end side of the front side frame relatively to the second reinforcement and configured to make the second reinforcement crushable in a bending direction in the vehicle collision. The second attaching member comprises a knot-shaped member provided inside the main closed-cross section.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: February 26, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takehiro Kamei, Masanobu Hanazaki, Chikara Kawamura, Masaki Motoki
  • Publication number: 20180362087
    Abstract: Provided is a front side frame 2, comprising: a main frame 201; and reinforcing members 30, 40, 50 disposed inside the main frame 2, wherein the reinforcing member 30 includes partition wall portions 31b, 32d, 32e dividing a main closed cross-section C_m of the main frame 201 into a plurality of sub closed-cross sections c, the first to third partition wall portions 31b, 32d, 32e being respectively formed with compression-side ridges 31s, 32s, 32u vertically facing each other and able to come into contact with each other in a deformation of the front side frame 2, and tension-side ridges 31t, 32t, 32v arranged in the same manner.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 20, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuki KODAMA, Masanori HONDA, Chikara KAWAMURA
  • Publication number: 20180257589
    Abstract: An impact absorbing member structure of a vehicle includes: a pair of left and right rear side frames; a pair of left and right crash cans containing a plurality of first carbon fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of rear side frames through the pair of crash cans. Each of the crash cans is formed as an open-section member including: a side wall portion extending in the forward/rearward direction; and a tip end wall portion continuous with the side wall portion and including an attaching portion to which the bumper reinforcement is attached.
    Type: Application
    Filed: November 8, 2016
    Publication date: September 13, 2018
    Applicant: Mazda Motor Corporation
    Inventors: Chikara Kawamura, Tsuneki Shimanaka, Hiroaki Takeshita, Tsuyoshi Nishihara, Takayuki Kimura, Kazutaka Ishikura
  • Publication number: 20180251088
    Abstract: An impact absorbing structure includes an impact absorbing member made of CFRP, and the impact absorbing member includes a pair of left and right side wall portions and upper and lower coupling wall portions each coupling the side wall portions. Each of the pair of side wall portions includes a plurality of curved portions. Each of the curved portions is formed such that a leftward/rightward direction depth thereof decreases toward a front side. Each of the pair of side wall portions includes: a plurality of first carbon fibers arranged to extend in a forward/rearward direction and constituting most of reinforced fibers contained in the side wall portion; and a plurality of second carbon fibers arranged to extend in a direction intersecting with the first carbon fibers. The plurality of second carbon fibers are arranged at both thickness direction end vicinity parts of each of the side wall portions.
    Type: Application
    Filed: November 8, 2016
    Publication date: September 6, 2018
    Inventors: Chikara Kawamura, Taiki Yotsuyanagi, Hiroaki Takeshita, Tsuyoshi Nishihara, Tsuneki Shimanaka, Takayuki Kimura, Yoshiaki Murakami
  • Publication number: 20180097300
    Abstract: A cable connection structural body is used for connecting a multi-core cable having a plurality of signal lines to a substrate, and the cable connection structural body includes a substrate fixation portion that is fixed to the substrate, and a cable holding portion that forms a space passing the plurality of signal lines therethrough between the cable holding portion and a surface of the substrate when the substrate fixation portion is fixed to the substrate.
    Type: Application
    Filed: June 22, 2017
    Publication date: April 5, 2018
    Inventors: Yukitaka TANAKA, Chikara KAWAMURA
  • Publication number: 20180072347
    Abstract: There are provided an outer panel, an inner panel, a second reinforcement provided in the main closed-cross section and cooperates with the outer panel to form a sub closed-cross section extending longitudinally, a bead portion formed at a portion of the inner panel which is located at a position corresponding to the second reinforcement, and configured to be a starting point causing bending of a front side frame toward the second reinforcement when a collision load is applied in a vehicle collision, and a second attaching member provided at a position located on a front-end side of the front side frame relatively to the second reinforcement and configured to make the second reinforcement crushable in a bending direction in the vehicle collision. The second attaching member comprises a knot-shaped member provided inside the main closed-cross section.
    Type: Application
    Filed: July 25, 2017
    Publication date: March 15, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Takehiro KAMEI, Masanobu HANAZAKI, Chikara KAWAMURA, Masaki MOTOKI
  • Patent number: 9701344
    Abstract: A bead portion is provided at a compression-side wall portion to be recessed toward an inside of a main closed cross section. A first reinforcing member is provided in the closed cross section and joined to a tension-side wall portion so as to form a first sub cross section extending in a longitudinal direction between the tension-side wall portion and the first reinforcing member. A second reinforcing member is provided in the closed cross section and joined to a portion of the compression-side wall portion where the bead portion is provided so as to form a second sub cross section extending vertically between the portion of the compression-side wall portion and the second reinforcing member. The first and second reinforcing members are configured to be spaced apart from each other.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: July 11, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuki Kodama, Chikara Kawamura, Masanori Honda
  • Patent number: 9683074
    Abstract: An object of the present invention is to provide a coating composition that has excellent storage stability, achieves water and oil repellency over a long period of time, and has excellent chemical resistance and processability. To achieve this object, the present invention provides a copolymer resin (A) comprising, as constituent components, a polybasic acid component (a1); a compound (a2) containing at least one member selected from a secondary-hydroxyl-group-containing polyhydric alcohol component (a21) and a compound (a22), which generates one or more secondary hydroxyl groups by reaction with one or more carboxyl groups; and a specific fluorine-containing diol (f), the component (f) being used in a proportion of 0.1 to 30 mass %, based on the total mass of the constituent components.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 20, 2017
    Assignee: KANSAI PAINT CO., LTD.
    Inventors: Chikara Kawamura, Akinori Nagai
  • Patent number: 9590355
    Abstract: A connector is provided with a lock portion, a lock supporting portion and a lock releasing member. A part of the connector forms a fitting portion to be received by a mating fitting portion of a mating connector in a mated state. The lock portion is provided in the fitting portion and locks a mating lock portion in the mated state. The lock supporting portion supports the lock portion to allow movement of the lock portion in a direction intersecting with a fitting direction. The lock releasing member is provided with a pressing portion. When release operation of the lock releasing member is performed, the pressing portion presses a pressed portion to move the lock portion toward an inside of the fitting portion in a perpendicular to the fitting direction.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: March 7, 2017
    Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Chikara Kawamura, Yukitaka Tanaka