Patents by Inventor Chikashi Iizuka

Chikashi Iizuka 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: 11554763
    Abstract: In a brake device for a saddle-type vehicle, including hydraulic front and rear wheel brakes and a first control unit that controls operations of the front wheel brake and the rear wheel brake, a second control unit includes a collision possibility determining section that determines a possibility of collision of an own vehicle with an obstacle ahead, the first control unit has an automatic brake controller that performs automatic brake control to automatically increase braking forces of the front wheel brake and the rear wheel brake, and in case where the collision possibility determining section determines that there is the possibility of collision, the automatic brake controller pressurizes the rear wheel brake to brake a rear wheel, and simultaneously pressurizes the front wheel brake up to a predetermined pressure at which a vehicle body posture is not changed by braking of a front wheel.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: January 17, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki Kaneta, Chikashi Iizuka, Chihiro Iida, Hironori Nakamura
  • Publication number: 20220371676
    Abstract: A saddle-riding vehicle includes a front wheel suspension device which supports a steering wheel (front wheel) and a steering handle (bar handle 4), a chassis frame which supports the front wheel suspension device to be steerable, a handle lock mechanism 60 which locks the steering of the front wheel suspension device with respect to the chassis frame at a predetermined handle lock position P1, a steering actuator 43 which applies an assist torque to the front wheel suspension device, and a control device 23 which controls the driving of the steering actuator 43. The control device 23 operates the steering actuator 43 so that the front wheel suspension device is turned to the handle lock position P1 when detecting a predetermined lock standby state.
    Type: Application
    Filed: September 24, 2020
    Publication date: November 24, 2022
    Inventors: Chikashi Iizuka, Kineo Tomura
  • Publication number: 20220340225
    Abstract: This saddle-type vehicle includes a warning vibration generator (205) that generates a predetermined vibration to issue a warning to a driver, the warning vibration generator (205) includes a warning selection unit (210) that selects a predetermined warning in accordance with a strength of driving assist control, and, in accordance with the warning selected by the warning selection unit (210), the warning vibration generator (205) generates a vibration (a haptic vibration) as a warning in a frequency band that avoids a vibration frequency common to a motorcycle.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 27, 2022
    Inventors: Chikashi Iizuka, Yosuke Wada, Kineo Tomura
  • Publication number: 20220340203
    Abstract: When an external detection device detects an obstacle (another vehicle (T)) on either a left or right side of the own vehicle (M), a control device of a steering assistance device for a saddle type vehicle controls an assist torque so that a handle operation to the side opposite to the side on which the obstacle is detected becomes heavier (more difficult to turn) than a case in which the obstacle is not detected. The handle operation to the side on which the obstacle is detected makes a handle relatively light (makes it easier to turn) while steering assist is maintained.
    Type: Application
    Filed: September 28, 2020
    Publication date: October 27, 2022
    Inventors: Chikashi Iizuka, Yosuke Wada
  • Patent number: 11358574
    Abstract: In this brake control device for a motorcycle, a deceleration threshold value calculation unit limits target wheel deceleration to a threshold value or less on the basis of a bank angle estimated by a bank angle calculation unit. Thus, the behavior of the vehicle body during turning of the motorcycle can be made more stable so as not to cause discomfort to a driver.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 14, 2022
    Assignees: Honda Motor Co., Ltd., Hitachi Astemo Ltd.
    Inventors: Chikashi Iizuka, Makoto Toda, Hiroki Kitagawa, Tetsuya Hasegawa, Nobuyuki Kodaira
  • Publication number: 20220126690
    Abstract: A saddled vehicle includes an information display unit (37) that displays information on a preceding vehicle (B1) which an own vehicle (M) follows when traveling, wherein a positional relationship between the own vehicle (M) and the preceding vehicle (B1) is recognized, and, in a case in which a change occurs in the positional relationship, a display mode of the preceding vehicle (B1) on the information display unit (37) is changed.
    Type: Application
    Filed: March 28, 2019
    Publication date: April 28, 2022
    Inventors: Hiroshi Maeda, Hiroshi Tatsumi, Chikashi Iizuka
  • Publication number: 20200391732
    Abstract: Engine braking is stabilized so that a saddled vehicle can be decelerated smoothly In a saddled vehicle including an engine including an electronic throttle valve mechanism that drives an air intake throttle valve via an actuator, and a first control unit that controls the engine, the first control unit has an engine braking controller that controls the throttle valve so as to generate a force that offsets the engine braking of the engine when the vehicle is decelerated.
    Type: Application
    Filed: December 21, 2018
    Publication date: December 17, 2020
    Inventors: Hiroyuki Kaneta, Chikashi Iizuka, Chihiro Iida, Hironori Nakamura
  • Publication number: 20200276961
    Abstract: In a brake device for a saddle-type vehicle, including hydraulic front and rear wheel brakes and a first control unit that controls operations of the front wheel, brake and the rear wheel brake, a second control unit includes a collision possibility determining section that determines a possibility of collision of an own vehicle with an obstacle ahead, the first control unit has an automatic brake controller that performs automatic brake control to automatically increase braking forces of the front wheel brake and the rear wheel brake, and in case where the collision possibility determining section determines that there is the possibility of collision, the automatic brake controller pressurizes the rear wheel brake to brake a rear wheel, and simultaneously pressurizes the front wheel brake up to a predetermined pressure at which a vehicle body posture is not changed by braking of a front wheel.
    Type: Application
    Filed: October 17, 2018
    Publication date: September 3, 2020
    Inventors: Hiroyuki Kaneta, Chikashi Iizuka, Chihiro Iida, Hironori Nakamura
  • Publication number: 20190135248
    Abstract: In this brake control device for a motorcycle, a deceleration threshold value calculation unit limits target wheel deceleration to a threshold value or less on the basis of a bank angle estimated by a bank angle calculation unit. Thus, the behavior of the vehicle body during turning of the motorcycle can be made more stable so as not to cause discomfort to a driver.
    Type: Application
    Filed: March 31, 2016
    Publication date: May 9, 2019
    Inventors: Chikashi IIZUKA, Makoto TODA, Hiroki KITAGAWA, Tetsuya HASEGAWA, Nobuyuki KODAIRA
  • Patent number: 9561785
    Abstract: A vehicle rear wheel lift tendency judgment device: includes a first deceleration obtaining device for obtaining a first deceleration along a first straight line, being a component in a first direction of an acceleration on a center of gravity, and a second deceleration obtaining device for obtaining a second deceleration along a second straight line, being a component in a second direction of the acceleration; judges that a rear wheel tends to be lifted, when the first deceleration is greater in the first direction than a first threshold, or when the second deceleration is greater in the second direction than a second threshold; and performs at least one of setting for shifting the first threshold in a direction opposite to the first direction and setting for shifting the second threshold in a direction opposite to the second direction, when a second-deceleration change rate being a change amount in the second deceleration per unit time becomes greater in the second direction than a change-rate threshold, en
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: February 7, 2017
    Assignees: HONDA MOTOR CO., LTD., NISSIN KOGYO CO., LTD.
    Inventors: Chikashi Iizuka, Makoto Toda, Hiroki Kitagawa, Tetsuya Hasegawa, Nobuyuki Kodaira, Tomoharu Tsuchiya
  • Publication number: 20150232074
    Abstract: A vehicle rear wheel lift tendency judgment device: includes a first deceleration obtaining device for obtaining a first deceleration along a first straight line, being a component in a first direction of an acceleration on a center of gravity, and a second deceleration obtaining device for obtaining a second deceleration along a second straight line, being a component in a second direction of the acceleration; judges that a rear wheel tends to be lifted, when the first deceleration is greater in the first direction than a first threshold, or when the second deceleration is greater in the second direction than a second threshold; and performs at least one of setting for shifting the first threshold in a direction opposite to the first direction and setting for shifting the second threshold in a direction opposite to the second direction, when a second-deceleration change rate being a change amount in the second deceleration per unit time becomes greater in the second direction than a change-rate threshold, en
    Type: Application
    Filed: February 18, 2015
    Publication date: August 20, 2015
    Applicants: HONDA MOTOR CO., LTD., NISSIN KOGYO CO., LTD.
    Inventors: Chikashi Iizuka, Makoto Toda, Hiroki Kitagawa, Tetsuya Hasegawa, Nobuyuki Kodaira, Tomoharu Tsuchiya
  • Patent number: 7798273
    Abstract: To enhance a degree of freedom in the shape and the design of a swing arm without being influenced by the variation of a part for supporting an exhaust muffler on the side of the swing arm and a part for coupling a rear cushion unit to the side of the swing arm in a compact vehicle, a cushion bracket coupled to a lower end of the rear cushion unit and a muffler bracket that supports the exhaust muffler are provided as separate elements from the swing arm and are attached to the swing arm.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: September 21, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Noriya Shimozato, Satoru Ikami, Kengo Yano, Shohei Takiguchi, Chikashi Iizuka
  • Patent number: 7527119
    Abstract: A swing arm support structure is provided in a motorcycle, in which first and second support arm portions are provided on a front portion of a swing arm. The support arm portions are pivotally supported by a power unit through first and second pivot shafts, so that rigidity and strength of the paired support arm portions is ensured. A flange is formed on the first pivot shaft, which extends at least partially up to an outer edge of a power unit case and projects radially outwardly from an end portion of the first pivot shaft adjacent the case. The flange portion is removably attached to the case. An outer end of an output shaft extends through and is supported by the first pivot shaft, and this outer end projects outwards of the first support arm portion. A drive gear is fixed to the outer end portion of the output shaft.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: May 5, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Chikashi Iizuka, Hiroyuki Tanaka
  • Patent number: 7434645
    Abstract: A structure for supporting a swing arm in a motorcycle is provided in which a power unit swingably supports a front portion of the swing arm via a first pivot of a cylindrical shape that is coaxial with an output shaft of the power unit and a second pivot that is coaxial with the first pivot. The number of parts used are reduced and the removal and installation of the swing arm is facilitated. An output shaft, an outer end portion of which projects outwardly of a swing arm, is connected to a final transmission member of a reduction transmission and is capable of removal or insertion in an axial direction, while being incapable of relative rotation about an axis. A first pivot is removably mounted on a power unit. A second pivot is removably secured to the power unit PA or the swing arm.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: October 14, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Chikashi Iizuka, Hiroyuki Tanaka
  • Publication number: 20070007065
    Abstract: A swing arm support structure is provided in a motorcycle, in which first and second support arm portions are provided on a front portion of a swing arm. The support arm portions are pivotally supported by a power unit through first and second pivot shafts, so that rigidity and strength of the paired support arm portions is ensured. A flange is formed on the first pivot shaft, which extends at least partially up to an outer edge of a power unit case and projects radially outwardly from an end portion of the first pivot shaft adjacent the case. The flange portion is removably attached to the case. An outer end of an output shaft extends through and is supported by the first pivot shaft, and this outer end projects outwards of the first support arm portion. A drive gear is fixed to the outer end portion of the output shaft.
    Type: Application
    Filed: December 7, 2005
    Publication date: January 11, 2007
    Applicant: Honda Motor Co., Ltd.
    Inventors: Chikashi Iizuka, Hiroyuki Tanaka
  • Publication number: 20060102406
    Abstract: A structure for supporting a swing arm in a motorcycle is provided in which a power unit swingably supports a front portion of the swing arm via a first pivot of a cylindrical shape that is coaxial with an output shaft of the power unit and a second pivot that is coaxial with the first pivot. The number of parts used are reduced and the removal and installation of the swing arm is facilitated. An output shaft, an outer end portion of which projects outwardly of a swing arm, is connected to a final transmission member of a reduction transmission and is capable of removal or insertion in an axial direction, while being incapable of relative rotation about an axis. A first pivot is removably mounted on a power unit. A second pivot is removably secured to the power unit PA or the swing arm.
    Type: Application
    Filed: November 9, 2005
    Publication date: May 18, 2006
    Inventors: Chikashi Iizuka, Hiroyuki Tanaka
  • Patent number: 7004276
    Abstract: A low floor type vehicle 10 is disclosed with a housing box 59 having substantially similar longitudinal length to the longitudinal length of a seat is provided under the seat 58 and a rear cushion for the rear wheel is transversely arranged under the housing box. The housing box is provided with a lid for checking the rear cushion for the rear wheel at the bottom. The engine is suspended from a diamond type frame 20. The rear cushion for the rear wheel is arranged along the rear of an upper frame extended backward and downward from a head pipe.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: February 28, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Chikashi Iizuka, Yoshio Takada
  • Publication number: 20040124032
    Abstract: A low floor type vehicle 10 is disclosed with a housing box 59 having substantially similar longitudinal length to the longitudinal length of a seat is provided under the seat 58 and a rear cushion for the rear wheel is transversely arranged under the housing box. The housing box is provided with a lid for checking the rear cushion for the rear wheel at the bottom. The engine is suspended from a diamond type frame 20. The rear cushion for the rear wheel is arranged along the rear of an upper frame extended backward and downward from a head pipe.
    Type: Application
    Filed: September 18, 2003
    Publication date: July 1, 2004
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Chikashi Iizuka, Yoshio Takada
  • Patent number: 6547024
    Abstract: A motorcycle includes an engine mounted on a frame in a non-swingable manner. First and second rear arms are swingably supported by the engine about first and second coaxial swing axes, respectively. A rear wheel is rotatably supported between the first and second rear arms. The second rear arm includes front and rear arm members, which are supported swingably by the engine and support an axle of the rear wheel, respectively. The arm members are separably connected together to facilitate servicing and removal of the rear wheel.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: April 15, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Ohyama, Chikashi Iizuka, Shinji Kuga
  • Patent number: 6450301
    Abstract: A motorcycle includes a rear wheel supported by a swing arm, and a damper extends between the swing arm and the body. A swing arm extension portion extends in the rearward direction from a rear wheel shaft supporting portion of the swing arm. The damper is connected to a rear end connecting portion of the swing arm extension portion. A brake device includes a parking brake caliper and a rear brake caliper. The parking brake caliper and the rear brake caliper are arranged above and below the swing arm extension portion. The rear brake caliper and the parking brake caliper can be mounted without shifting the swing arm toward the outside in the body in the width direction more than necessary.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: September 17, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Chikashi Iizuka, Yoshinobu Honda