Patents by Inventor Ryujiro Akizuki

Ryujiro Akizuki 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: 20130285389
    Abstract: A vehicle door lock device includes a latch mechanism having a latch and a pawl, and a lock mechanism having an open lever linked with the pawl. The lock mechanism is combined with the latch mechanism. A latch-side axial support portion is provided in a latch housing of the latch mechanism. The latch-side axial support portion rotatably supports a coil portion of a pawl spring for biasing the pawl toward a default position. A lock-side axial support portion is provided in a lock housing of the lock mechanism. The lock-side axial support portion rotatably supports a coil portion of an open lever spring for biasing the open lever toward a default position. At least part of the latch-side axial support portion overlaps with the lock-side axial support portion, so that pulling out of the open lever spring is prevented by means of the latch-side axial support portion.
    Type: Application
    Filed: October 4, 2011
    Publication date: October 31, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono
  • Patent number: 8438888
    Abstract: A door lock device includes a lever mechanism which carries out lock/unlock operation in response to turn operation of a key cylinder. The lever mechanism includes a key rotor which includes a coupling hole to which an inner end of a rod is coupled in a torque transmittable manner and is rotatably assembled to a housing, and a key lever which includes a hub which is coupled to the key rotor in a torque transmittable manner and is arranged in the housing. The key lever includes a first arm which extends to radial outward direction from the hub and is capable of engaging with a first engagement portion of the active lever, and a second arm which extends to radial outward direction from the hub and is capable of engaging with a second engagement portion of the active lever.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 14, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Kazunori Kojima, Sho Sannohe, Yusuke Yamada, Yasuhiko Sono
  • Publication number: 20130056996
    Abstract: A vehicle door lock device includes a housing including: an outer housing body including a covering portion covering an outer side of an electric motor and an outer side of a worm, an outer shaft-supporting portion supporting an active lever, and an outer shaft-supporting portion supporting a worm wheel; and an inner housing body including an inner shaft-supporting portion supporting an active lever, and an inner shaft-supporting portion supporting the worm wheel. An outer surface of the covering portion of the outer housing body and an outer surface of the outer shaft-supporting portion, which is provided in the outer housing body, for supporting the active lever, are formed in the same flat surface, and an outer surface of the outer shaft-supporting portion, which is provided in the outer housing body, for supporting the worm wheel, is formed in a dented surface dented inwardly with respect to the flat surface.
    Type: Application
    Filed: March 10, 2011
    Publication date: March 7, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Publication number: 20130036779
    Abstract: A vehicle door lock device includes an active lever configured to bring an open link into a locked or unlocked state, and a child safety lock mechanism built into an inside open lever, and configured to enable pushing force transfer from the inside open lever to the open link in an unset state, and to disable the pushing force transfer in a set state. An engagement portion is set on the active lever, and a pushing portion is set on an intermediate member of the child safety lock mechanism. When the intermediate member is situated at an unset position, the inside door handle is operated to open a door, and a child safety protector lever moves the intermediate member to a set position, the pushing portion of the intermediate member engages the engagement portion of the active lever so that the active lever is moved to a locked position.
    Type: Application
    Filed: March 17, 2011
    Publication date: February 14, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Publication number: 20130015673
    Abstract: A vehicle door lock device includes a latch mechanism, a lever mechanism, a link mechanism, and an electric actuator, assembled to a housing. The housing includes a housing body and a housing cover joined to each other, and is arranged so that a joining surface between the housing body and the housing cover extends along an up-and-down direction. A sealing portion is formed along a joining portion between the housing body and the housing cover to surround an upper part of an inner space of the housing accommodating the link mechanism and the electric actuator. The sealing portion includes a communication path including one open end, and inner and outer welded portions formed continuously along the communication path on an inner side of the housing and an outer side of the housing with respect to the communication path, respectively. This achieves waterproofing for the electric actuator.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 17, 2013
    Applicant: ASIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Publication number: 20130000363
    Abstract: Provided is a child lock mechanism which provides satisfactory operability at the time of operation of opening/closing a door while maintaining satisfactory operability at the time of setting/unsetting operation. The child lock mechanism includes: a base member; a first lever; a second lever; and an intermediate member assembled to the first lever and not assembled to the second lever. In a state in which the intermediate member is retained at an unset position, the intermediate member is rotatable relative to the base member, and a rotation center of the first lever relative to the base member and a rotation center of the intermediate member relative to the base member are arranged coaxially with each other.
    Type: Application
    Filed: March 3, 2011
    Publication date: January 3, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHI
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Publication number: 20120313385
    Abstract: Provided is an automotive door latch device, including: a latch pushed to rotate by a striker; a latch return spring for biasing the latch toward a return position thereof; a pawl engageable with the latch to inhibit the latch to pivot in a door opening direction (return position); and a pawl return spring for biasing the pawl toward a return position thereof. A housing part of a body, which houses the latch and the pawl, is opened downward at a position below the pawl on one side of the body. The pawl return spring is assembled to a spring mounting part formed on another side of the body at a position spaced downward from a rotational support part of the pawl, and includes a pawl-side end part that engages with the pawl through a through hole provided in the body. Thus, dust or the like entering the housing part of the body, which houses the latch and the pawl, can be discharged out of the body with higher efficiency.
    Type: Application
    Filed: December 24, 2010
    Publication date: December 13, 2012
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Publication number: 20120247160
    Abstract: An outside locking lever of a lever mechanism section in a lock mechanism of a vehicle door lock apparatus includes a hub portion being rotatable relative to a housing and having a connection subportion to which an inner end portion of a rod is connected in a torque transmittable manner; an arm portion extending radially outward from the hub portion and linked to an active lever; a hub-side engagement subportion provided on the hub portion and engaged in the vehicle interior-exterior direction with a first support portion of the housing; an arm-side engagement subportion provided on the arm portion and engaged in the vehicle interior-exterior direction with a second support portion of the housing; and a fragile portion provided between the two engagement portions and being breakable with a force of a predetermined value or greater. A space for allowing breakage at the fragile portion is provided within the housing.
    Type: Application
    Filed: October 28, 2011
    Publication date: October 4, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Makoto SUZUMURA, Takashi Nishio, Nobuko Watanabe, Masayuki Tomochika, Masanari Iwata, Yasuhiko Sono, Ryujiro Akizuki
  • Patent number: 8276949
    Abstract: A vehicle door lock device includes a latch mechanism having a lift lever and further includes an inside open lever, an outside open lever, an open link and an active lever. A spring is interposed between the outside open lever and the open link. In the housing, provided is an unlocked state holding guide for holding the open link in an unlocked state when the active lever is in an unlock position and when the outside open lever rotates. In the active lever, provided is a locked state holding guide for holding the open link in a locked state when the active lever is in a lock position and when the outside open lever rotates. This construction enables reduction of the number of components and construction of the device in a simple and inexpensive manner.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: October 2, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Patent number: 8267444
    Abstract: A door lock apparatus for a vehicle includes a latch mechanism, an open operation lever, an open lever operatively connected to the open operation lever, a locking lever being switchable between an unlocked position and a locked position, a link operation lever operatively connected to the locking lever, a link member operatively connected to the link operation lever, the link member being able to transmit an operation of the open lever to the latch mechanism when the locking lever is in the unlocked position, the link member being unable to transmit the operation of the open lever to the latch mechanism when the locking lever is in the locked position, and a lever member operatively connected to the open lever and the locking lever, the lever member moving the locking lever from the locked position to the unlocked position by means of the operation of the open lever.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: September 18, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryujiro Akizuki, Takashi Nishio, Kazumasa Seo, Yusuke Yamada
  • Publication number: 20120198770
    Abstract: When a worm wheel rotates relative to an object pinching detection plate due to pinching of a foreign object, protruding pieces respectively formed on opposed surfaces of the worm wheel and the object pinching detection plate engage with each other. Through the engagement, the object pinching detection plate axially moves. At this time, the object pinching detection plate axially moves without rotation, and hence the object pinching detection plate is brought into contact with a movable piece of an object pinching detection switch without rotation. Therefore, wear due to rotation does not occur when the object pinching detection plate and the object pinching detection switch are brought into contact with each other. Thus, deterioration in object pinching detection accuracy due to the wear is prevented.
    Type: Application
    Filed: September 15, 2010
    Publication date: August 9, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hidefumi Katayama, Ryoichi Fukumoto, Ryujiro Akizuki, Koichi Hirota
  • Publication number: 20120192491
    Abstract: A position detection unit includes a rotational member rotatable by a rotational drive force of an output shaft, an operation lever configured to avoid engaging with the rotational member when an open/close position of a window glass is situated out of an insensitive area, and engage with the rotational member when the open/close position of the window glass is situated within the insensitive area, the operation lever being rotated by the rotational drive force of the output shaft transmitted via the rotational member when the operation lever engages with the rotational member, and an insensitive area detection switch for performing a switching operation based on a rotational operation of the operation lever. It is detected whether or not an open/close position of the window glass is situated within the insensitive area based on the rotational operation of the operation lever, and accordingly detection accuracy is enhanced.
    Type: Application
    Filed: September 15, 2010
    Publication date: August 2, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hidefumi Katayama, Ryoichi Fukumoto, Ryujiro Akizuki
  • Publication number: 20120118029
    Abstract: A door lock device includes a lever mechanism which carries out lock/unlock operation in response to turn operation of a key cylinder. The lever mechanism includes a key rotor which includes a coupling hole to which an inner end of a rod is coupled in a torque transmittable manner and is rotatably assembled to a housing, and a key lever which includes a hub which is coupled to the key rotor in a torque transmittable manner and is arranged in the housing. The key lever includes a first arm which extends to radial outward direction from the hub and is capable of engaging with a first engagement portion of the active lever, and a second arm which extends to radial outward direction from the hub and is capable of engaging with a second engagement portion of the active lever.
    Type: Application
    Filed: June 30, 2010
    Publication date: May 17, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Kazunori Kojima, Sho Sannohe, Yusuke Yamada, Yasuhiko Sono
  • Publication number: 20120119520
    Abstract: A door lock device for a vehicle, provided with an opening lever driven as a door handle is operated, an opening link interposed between the opening lever and a lift lever of a latch mechanism, a lock operation unit for switching the opening link to an unlock position or a lock position, and a locking lever for driving the lock operation unit. A holding section is provided to the opening lever. The holding section holds the opening link at a holding position between the lock position and the unlock position when the opening link becomes switched by the locking lever through the lock operation unit from the lock position to the unlock position with the opening link driven by the opening lever.
    Type: Application
    Filed: June 30, 2010
    Publication date: May 17, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Nobuko Watanabe, Kazunori Kojima, Sho Sannohe, Yusuke Yamada, Yasuhiko Sono
  • Patent number: 8146965
    Abstract: A vehicle door lock device includes an active lever freely switchable between an unlock position and a lock position, a switching actuator, and a switching lever receiving drive force of the switching actuator to move a bushing. The active lever includes a first engagement piece and a second engagement piece. When the active lever is located at the unlock position, the second engagement piece engages with the first engagement piece located at a set position of the bushing to limit movement of the switching lever so that movement of the bushing is restricted within a range between an unset position and the set position. When the active lever is located at the lock position, the first engagement piece is arranged at a position avoiding engagement with the second engagement piece to allow the switching lever to move the bushing between the unset position and a double lock position.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: April 3, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryujiro Akizuki, Takashi Nishio, Yusuke Yamada
  • Publication number: 20120000258
    Abstract: A vehicle door locking device Ao is provided with an open mechanism A1, a lock mechanism A2, and an electric actuator A3, and also provided with a housing 10 accommodating these elements. An emergency operation member 42 manually operable from the indoor side of a door is assembled into the housing 10. A shaft portion 42a of the emergency operation member 42 is rotatably assembled into a support portion of the housing 10 instead of a key lock lever capable of driving by a mechanical key operation to a key cylinder positioned on the outer side of a vehicle.
    Type: Application
    Filed: March 25, 2010
    Publication date: January 5, 2012
    Inventors: Ryujiro Akizuki, Takashi Nishio, Yusuke Yamada, Sho Sannohe, Kazunori Kojima
  • Publication number: 20120001442
    Abstract: A vehicle door locking device Ao is integrated by assembling a base unit A2 provided with a latch mechanism A2a to a housing unit A1 provided with an actuating mechanism for actuating the latch mechanism A2a. A metal sub-base plate 27 of the base unit A2 has an attachment hole 27a fitted to a support shaft 11a provided in the housing unit A1 in the axial direction thereof, the support shaft extending in the vehicle length direction. The attachment hole 27a of the metal sub-base plate 27 is fitted to the support shaft 11a, so that the base unit A2 is integrated with the housing unit A1. The metal sub-base plate 27 is provided with a receiving portion 27b for restraining a lean in the vehicle width direction (W direction) of a child-proof lever 36 at a back part of the child-proof lever 36.
    Type: Application
    Filed: March 25, 2010
    Publication date: January 5, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Yusuke Yamada, Sho Sannohe, Kazunori Kojima
  • Publication number: 20110260476
    Abstract: A vehicle door lock device includes an opening mechanism, a lock mechanism, and an electric actuator. The electric actuator includes an electric motor driven in accordance with a lock operation and an unlock operation, a worm provided integrally with an output shaft of the electric motor, the worm being rotated and driven by the electric motor, and a locking lever having a sector gear meshed with the worm, the locking lever being linked with an active lever. The locking lever is provided with an operation portion linked with a lock knob L provided on the indoor side of a door.
    Type: Application
    Filed: March 23, 2010
    Publication date: October 27, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Yusuke Yamada, Sho Sannohe, Kazunori Kojima
  • Publication number: 20110254287
    Abstract: A vehicle door lock device includes a latch mechanism having a lift lever and further includes an inside open lever, an outside open lever, an open link and an active lever. A spring is interposed between the outside open lever and the open link. In the housing, provided is an unlocked state holding guide for holding the open link in an unlocked state when the active lever is in an unlock position and when the outside open lever rotates. In the active lever, provided is a locked state holding guide for holding the open link in a locked state when the active lever is in a lock position and when the outside open lever rotates. This construction enables reduction of the number of components and construction of the device in a simple and inexpensive manner.
    Type: Application
    Filed: May 23, 2011
    Publication date: October 20, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro AKIZUKI, Takashi Nishio, Nobuko Watanabe, Yasuhiko Sono, Kazunori Kojima
  • Patent number: 8033584
    Abstract: A vehicle door opening/closing device having a latch mechanism, a locking mechanism, an actuator, and a canceling mechanism is provided. The actuator has an electric motor and a pivotable drive lever. The canceling mechanism operates to block transmission of power between the electric motor and the drive lever when manipulation force of a vehicle door handle is transmitted to the canceling mechanism through the locking mechanism. The manipulation force of the door handle is transmitted to the canceling mechanism only when the vehicle door is in an unlocked state.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: October 11, 2011
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryujiro Akizuki, Kimito Shimizu, Takashi Nishio