Patents by Inventor Makoto Iwasa
Makoto Iwasa 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: 11927225Abstract: A sliding spline shaft device of the present invention includes a male spline and a female spline that is fitted to the male spline in an axially slidable manner, and at least one of the splines has a surface processed layer. The surface processed layer includes an undercoat layer, an intermediate layer containing phosphate, and a topcoat layer containing solid lubricant, in this order. The undercoat layer contains iron nitride and/or iron carbide. Thus, the surface of a base material has high hardness. As a result, microscopic deformation of the sliding surface is reduced, and increase in a real contact area is suppressed, whereby stick-slip is prevented.Type: GrantFiled: April 12, 2019Date of Patent: March 12, 2024Assignees: NISSAN MOTOR CO., LTD., NIHON PARKERIZING CO., LTD.Inventors: Shigetoshi Kashiwabara, Kunio Katada, Shunsuke Hiraiwa, Akihumi Kawaguchi, Takeo Nishijima, Shinichi Suzuki, Yasuyuki Katsumada, Makoto Nakajima, Tokunori Kodama, Masato Ito, Aiki Iwasa
-
Patent number: 11059522Abstract: A vehicle (1) comprises a passenger compartment (2) in which a front seat (32F), a rear seat (32R), and a floor (33) between the front seat (32F) and the rear seat (38R) are provided. A first group (S1) of batteries (3) is mounted under the front seat (32F), a second group (S2) of the batteries (3) is mounted under the floor (33), and a third group (S3) of the batteries (3) is mounted under a rear seat (32R). By setting a height (h2) of the second group (S2) of the batteries (3) to be lower than respective heights (h1, h3) of the first and third groups (S1, S3) of the batteries (3), a battery mounting capacity of the vehicle (1) can be increased without affecting the comfort of the passenger compartment (2).Type: GrantFiled: February 16, 2010Date of Patent: July 13, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Makoto Iwasa, Hidetoshi Kadota, Tadayoshi Hashimura, Shinya Ogata, Satoshi Shigematsu
-
Patent number: 10766347Abstract: A battery unit (38F) comprising a plurality of batteries (3) and a connection control device (35a, 35b, 36a, 36b, 36d, 36e) which controls electrical connection relating to the battery unit (38F) are provided in a vehicle (1). The battery unit (38F) comprises two groups (S1R, S1L) of the batteries (3) disposed to have a space (G) there-between, and the connection control device (35a, 35b, 36a, 36b, 36d, 36e) is disposed in the space (G). The layout of the connection control device (35a, 35b, 36a, 36b, 36d, 36e) is thereby optimized and the length of a harness (34) can be shortened.Type: GrantFiled: February 19, 2010Date of Patent: September 8, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Makoto Iwasa, Hidetoshi Kadota, Tadayoshi Hashimura, Satoshi Shigematsu, Nobuhiro Mori, Kentaro Hatta
-
Patent number: 10421334Abstract: An electric compressor mounted to a vehicle includes a motor, a compression unit driven by the motor, an inverter unit for driving the motor, a housing for accommodating the motor, the compression unit, and the inverter unit, and a cover mounted to the housing for closing a space accommodating the inverter unit. The electric compressor is fixed to the vehicle by means of a first mounting leg provided to the housing, and a second mounting leg provided to the cover. The second mounting leg includes a stress concentration part at which stress concentrates as compared with another portion of the second mounting leg.Type: GrantFiled: November 17, 2015Date of Patent: September 24, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kei Nishibori, Makoto Iwasa, Nobuaki Ogawa, Takeshi Imanishi, Yoshifumi Abe
-
Patent number: 10109894Abstract: In a battery pack structure for electric vehicles that a battery module, a junction box, and a battery controller for battery management are mounted in a battery-pack-case internal space, clearances, ensured when the battery module is mounted in the case internal space, are configured as temperature-adjustment air passages through which temperature-adjusting air flows. The junction box and the battery controller are arranged at positions spaced apart from each other and facing one straight passage part of the temperature-adjustment air passages. Furthermore, a weak-electric harness, via which the junction box and the battery controller are connected to each other, is wired along the straight passage part, thus ensuring smooth flow of temperature-adjusting air, while improving both the harness-wiring workability and the harness durability.Type: GrantFiled: March 21, 2012Date of Patent: October 23, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Tatsunori Tanigaki
-
Publication number: 20170259647Abstract: An electric compressor mounted to a vehicle includes a motor, a compression unit driven by the motor, an inverter unit for driving the motor, a housing for accommodating the motor, the compression unit, and the inverter unit, and a cover mounted to the housing for closing a space accommodating the inverter unit. The electric compressor is fixed to the vehicle by means of a first mounting leg provided to the housing, and a second mounting leg provided to the cover. The second mounting leg includes a stress concentration part at which stress concentrates as compared with another portion of the second mounting leg.Type: ApplicationFiled: November 17, 2015Publication date: September 14, 2017Inventors: KEI NISHIBORI, MAKOTO IWASA, NOBUAKI OGAWA, TAKESHI IMANISHI, YOSHIFUMI ABE
-
Patent number: 9748553Abstract: A battery pack is disposed at a lower part of a vehicular body. The battery pack (13) includes: a protrusion protruding in a vehicular upward direction and disposed at an upper face of the battery pack, and a dent portion disposed at the upper face of the battery pack (13) and formed lower than the protrusion, wherein an accessory is disposed in the dent portion.Type: GrantFiled: April 29, 2015Date of Patent: August 29, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentaro Hatta, Makoto Iwasa, Nobuhiro Mori
-
Patent number: 9564664Abstract: A battery pack temperature control structure is provided for an electric vehicle, and basically includes a battery module, a heavy-current disconnecting switch and a temperature control unit. The battery module is mounted in an inner space of the battery pack case. The heavy-current disconnecting switch disconnects, by a manual operation, a battery high-power circuit in the battery module. The temperature control unit is mounted in the inner space of the battery pack case for producing a temperature-controlled air to be blown to the battery module. The heavy-current disconnecting switch is disposed in an upper space position within the inner space of the battery pack case. The temperature control unit is disposed in a space position that is lower than the heavy-current disconnecting switch and that overlaps with the heavy-current disconnecting switch in the vehicle vertical direction.Type: GrantFiled: February 7, 2013Date of Patent: February 7, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Tatsunori Tanigaki, Kentaro Hatta, Norihisa Tsujimura, Makoto Iwasa
-
Patent number: 9444082Abstract: An object of the present invention is to secure both of vehicle body floor upper space and battery mounting space, in setting of a mounting position of a high-power cut-off switch to a battery pack case. Battery pack case 1 having battery modules 2 and SD switch 4 that cuts off battery high-power circuit by manual operation is arranged in a lower position of vehicle body floor 100. In this battery pack structure for electric vehicle, an inside space of the battery pack case 1 is divided into two areas in a vehicle front-and-rear direction, and one of the two areas is defined as a battery module mounting area 7. SD switch 4 is provided in an upper surface position of the case that covers an electrical component mounting area 8, which is the other area, located on a vehicle front side with respect to battery module mounting area 7.Type: GrantFiled: March 1, 2012Date of Patent: September 13, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Takeshi Onodera, Tatsunori Tanigaki
-
Publication number: 20150263328Abstract: A battery pack is disposed at a lower part of a vehicular body. The battery pack (13) includes: a protrusion protruding in a vehicular upward direction and disposed at an upper face of the battery pack, and a dent portion disposed at the upper face of the battery pack (13) and formed lower than the protrusion, wherein an accessory is disposed in the dent portion.Type: ApplicationFiled: April 29, 2015Publication date: September 17, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Kentaro HATTA, Makoto Iwasa, Nobuhiro Mori
-
Patent number: 9118094Abstract: In a battery pack structure for electric vehicles that battery modules and a controller for battery management are mounted in a battery-pack-case internal space, a first one of clearances, ensured when the battery modules are mounted in the case internal space, which first clearance extends in a first direction, is configured as a first temperature-adjustment air passage, and the second clearance, located downstream of the first temperature-adjustment air passage and extending in a second direction different from the first direction, is configured as a second temperature-adjustment air passage. The controller is arranged at a position facing the second temperature-adjustment air passage. A harness for connecting between each detection line terminal from the battery modules and the controller, and one end of the harness, which harness end is configured as harness terminals connected to the respective detection line terminals, are wired along and arranged in the second temperature-adjustment air passage.Type: GrantFiled: March 21, 2012Date of Patent: August 25, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Tatsunori Tanigaki
-
Patent number: 9048484Abstract: A battery pack (13) is disposed at a lower part of a vehicular body. The battery pack (13) includes: a protrusion (27, 31) protruding in a vehicular upward direction and disposed at an upper face of the battery pack (13), and a dent portion (29) disposed at the upper face of the battery pack (13) and formed lower than the protrusion (27, 31), wherein an accessory (25) is disposed in the dent portion (29).Type: GrantFiled: July 12, 2010Date of Patent: June 2, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentaro Hatta, Makoto Iwasa, Nobuhiro Mori
-
Publication number: 20150136504Abstract: An object of the present invention is to secure both of vehicle body floor upper space and battery mounting space, in setting of a mounting position of a high-power cut-off switch to a battery pack case. Battery pack case 1 having battery modules 2 and SD switch 4 that cuts off battery high-power circuit by manual operation is arranged in a lower position of vehicle body floor 100. In this battery pack structure for electric vehicle, an inside space of the battery pack case 1 is divided into two areas in a vehicle front-and-rear direction, and one of the two areas is defined as a battery module mounting area 7. SD switch 4 is provided in an upper surface position of the case that covers an electrical component mounting area 8, which is the other area, located on a vehicle front side with respect to battery module mounting area 7.Type: ApplicationFiled: March 1, 2012Publication date: May 21, 2015Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Takeshi Onodera, Tatsunori Tanigaki
-
Publication number: 20150010782Abstract: A battery pack temperature control structure is provided for an electric vehicle, and basically includes a battery module, a heavy-current disconnecting switch and a temperature control unit. The battery module is mounted in an inner space of the battery pack case. The heavy-current disconnecting switch disconnects, by a manual operation, a battery high-power circuit in the battery module. The temperature control unit is mounted in the inner space of the battery pack case for producing a temperature-controlled air to be blown to the battery module. The heavy-current disconnecting switch is disposed in an upper space position within the inner space of the battery pack case. The temperature control unit is disposed in a space position that is lower than the heavy-current disconnecting switch and that overlaps with the heavy-current disconnecting switch in the vehicle vertical direction.Type: ApplicationFiled: February 7, 2013Publication date: January 8, 2015Applicant: Nissan Motor Co., Ltd.Inventors: Tatsunori Tanigaki, Kentaro Hatta, Norihisa Tsujimura, Makoto Iwasa
-
Patent number: 8820452Abstract: A vehicle component mounting structure is provided with a vehicle body, a battery, a charger, a high-power electrical component other than the charger. The battery is mounted on the vehicle body. The charger is mounted on the vehicle body and converts a lower-voltage electric power supplied thereto from an external source into a higher-voltage electric power that is supplied to the battery. The high-power electrical component is mounted on the vehicle body with high voltage being supplied to the high-power electrical component. The charger and the high-power electrical component are arranged on longitudinally opposite sides of the battery with respect to a longitudinal direction of the vehicle body.Type: GrantFiled: May 12, 2010Date of Patent: September 2, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Makoto Iwasa, Nobuhiro Mori, Satoshi Shigematsu, Kenji Tamura
-
Patent number: 8708079Abstract: A vehicle body structure is provided with a vehicle body member, a charger, a structural support member. The charger includes an upper end portion and a lower end portion. The lower end portion of the charger is supported on the vehicle body member. The structural support member extends in a widthwise direction of the vehicle body structure in a position rearward of the upper end portion of the charger and adjacent the upper end portion of the charger.Type: GrantFiled: May 25, 2010Date of Patent: April 29, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Tadayoshi Hashimura, Makoto Iwasa, Seiichi Ichihara, Nobuhiro Mori, Kenji Tamura
-
Publication number: 20140079977Abstract: In a battery pack structure for electric vehicles that battery modules and a controller for battery management are mounted in a battery-pack-case internal space, a first one of clearances, ensured when the battery modules are mounted in the case internal space, which first clearance extends in a first direction, is configured as a first temperature-adjustment air passage, and the second clearance, located downstream of the first temperature-adjustment air passage and extending in a second direction different from the first direction, is configured as a second temperature-adjustment air passage. The controller is arranged at a position facing the second temperature-adjustment air passage. A harness for connecting between each detection line terminal from the battery modules and the controller, and one end of the harness, which harness end is configured as harness terminals connected to the respective detection line terminals, are wired along and arranged in the second temperature-adjustment air passage.Type: ApplicationFiled: March 21, 2012Publication date: March 20, 2014Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Tatsunori Tanigaki
-
Publication number: 20140072835Abstract: In a battery pack structure for electric vehicles that a battery module, a junction box, and a battery controller for battery management are mounted in a battery-pack-case internal space, clearances, ensured when the battery module is mounted in the case internal space, are configured as temperature-adjustment air passages through which temperature-adjusting air flows. The junction box and the battery controller are arranged at positions spaced apart from each other and facing one straight passage part of the temperature-adjustment air passages. Furthermore, a weak-electric harness, via which the junction box and the battery controller are connected to each other, is wired along the straight passage part, thus ensuring smooth flow of temperature-adjusting air, while improving both the harness-wiring workability and the harness durability.Type: ApplicationFiled: March 21, 2012Publication date: March 13, 2014Inventors: Norihisa Tsujimura, Toshifumi Takamatsu, Makoto Iwasa, Tatsunori Tanigaki
-
Patent number: 8561743Abstract: A plurality of batteries (3) are disposed under a floor panel (16) of a vehicle (1). A first battery unit (38F) comprising a plurality of batteries (3) stacked in a vertical direction and a second battery unit (38R) comprising a plurality of batteries (3) stacked in a vehicle transverse direction are provided. By arranging a layout of the first battery unit (38F) and the second battery unit (38R) considering the location of an electric equipment (12, 13, 14) to which the batteries (3) supply power as well as the location of passenger seats (32F, 32R), the weight balance of the vehicle (1) in the front-aft direction can be optimized.Type: GrantFiled: February 16, 2010Date of Patent: October 22, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Makoto Iwasa, Shinya Ogata, Hidetoshi Kadota, Tadayoshi Hashimura, Nobuhiro Mori
-
Publication number: 20120115001Abstract: A battery pack (13) is disposed at a lower part of a vehicular body. The battery pack (13) includes: a protrusion (27, 31) protruding in a vehicular upward direction and disposed at an upper face of the battery pack (13), and a dent portion (29) disposed at the upper face of the battery pack (13) and formed lower than the protrusion (27, 31), wherein an accessory (25) is disposed in the dent portion (29).Type: ApplicationFiled: July 12, 2010Publication date: May 10, 2012Inventors: Kentaro Hatta, Makoto Iwasa, Nobuhiro Mori