Patents by Inventor Kazuki Zaitsu

Kazuki Zaitsu 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: 7699653
    Abstract: A rubber stopper for a waterproof connector includes: a first elastic member including a first contact face, and first wire fitting grooves each having an arc cross-section; and a second elastic member including a second contact face and second wire fitting grooves each having an arc cross-section. When the first contact face contacts the second contact face, circular cross-section is formed by the arc cross-sections of the first and second wire fitting grooves to fit wires into the first and second wire fitting grooves. Arc length of the arc cross-section of the first wire fitting groove is different from arc length of the arc cross-section of the second wire fitting groove so that a center of the circular cross-section is disposed away from the first and second contact faces in a direction perpendicular to an extending direction of the first and the second contact faces.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: April 20, 2010
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Keiko Ishida, Kazuki Zaitsu
  • Patent number: 7666015
    Abstract: A board-connecting connector including a pair of inner housings opposed to each other for receiving elastic contact terminals with respect to a circuit board, a guiding plate having a sloped guiding part for engaging inner housing-driven projections and guiding the inner housings close to each other, and an outer housing for receiving the inner housings and the guide plate, and holding the guide plate. When the circuit board is fully inserted into the pair of inner housings, the circuit board abuts on the inner housings, and pushes to move the inner housings along the guiding plate.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: February 23, 2010
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Keiko Azuma, Kazuki Zaitsu
  • Publication number: 20100015864
    Abstract: A method of manufacturing a terminal for a board-mounting connector, wherein the terminal includes two L-shaped bent portions formed at its intermediate portion between its front and rear ends, a straight electrical contact portion formed at its front end, and a straight rear leg portion, the method includes a stamping operation applied to a stock to form a stamped-out terminal including the two bent portions, the electrical contact portion and the rear leg portion.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 21, 2010
    Applicant: YAZAKI CORPORATION
    Inventor: Kazuki ZAITSU
  • Patent number: 7581986
    Abstract: A slot 21 is formed on each of both side walls of a connector housing 1. A housing attachment portion 12 of each fixing metal member 10 is inserted into and locked in an associated one of the slots 21. The housing attachment portion 12 is divided by a slit 14 formed in a central part thereof into both side arms 13, each of which has a hook 13a provided at the top thereof. Each of the arms 13 is inwardly bent when the associated hook passes through the slot. After the top of each of the arms 13 passes therethrough, each of the arms 13 is restored from the bent condition so as to engage the hooks 13a with the associated slot 21. An engaging projection portion 31a is provided in an inner wall of each of the slots 21 such that each of the engaging projection portions 31a is pushed out to the side of the associated slot 21 and fit into the slit 14 by inserting a mating connector 5 into a connecting concave portion 4 to thereby prevent the arms from being inwardly bent.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: September 1, 2009
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu
  • Publication number: 20090149079
    Abstract: A slot 21 is formed on each of both side walls of a connector housing 1. A housing attachment portion 12 of each fixing metal member 10 is inserted into and locked in an associated one of the slots 21. The housing attachment portion 12 is divided by a slit 14 formed in a central part thereof into both side arms 13, each of which has a hook 13a provided at the top thereof. Each of the arms 13 is inwardly bent when the associated hook passes through the slot. After the top of each of the arms 13 passes therethrough, each of the arms 13 is restored from the bent condition so as to engage the hooks 13a with the associated slot 21. An engaging projection portion 31a is provided in an inner wall of each of the slots 21 such that each of the engaging projection portions 31a is pushed out to the side of the associated slot 21 and fit into the slit 14 by inserting a mating connector 5 into a connecting concave portion 4 to thereby prevent the arms from being inwardly bent.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 11, 2009
    Applicant: YAZAKI CORPORATION
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu
  • Patent number: 7520769
    Abstract: A connector includes a first and a second terminal portions each having: a substrate pressing portion; a spacer pressing portion; and a fulcrum portion arranged between the substrate pressing portion and the spacer pressing portion, a spacer arranged between the spacer pressing portions of the first and the second terminal portions, and a clipping section formed of the substrate pressing portions of the first and the second terminal portions. The clipping section opens and closes while operating the fulcrum portions as a fulcrum. The spacer pressing portions of the first and the second terminal portions close via the fulcrum when the clipping section opens.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: April 21, 2009
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Keiko Ishida, Kazuki Zaitsu
  • Patent number: 7507118
    Abstract: The object of the invention is to provide a connector assembly having enough waterproof performance, without needing high insertion force during the assembly process. In accordance with the present invention, there is provided a connector assembly 1 comprising a plug assembly 7; a header assembly 5 configured to be mated with the plug assembly 7 while forming an opening between the plug assembly 7 and the inside of the header assembly 5; holder assemblies 18d and 18e configured to apply pressure on the plug assembly in the direction of insertion of the plug assembly 7 into the header assembly 5; and a sealing member 4 configured to be pushed out toward the opening in response to the pressure applied by the holder assemblies 18d and 18e after insertion of the plug assembly 7 into the header assembly 5, in order to plug and seal the opening.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: March 24, 2009
    Assignee: Yazaki Corporation
    Inventors: Keiko Azuma, Kazuki Zaitsu
  • Publication number: 20090042442
    Abstract: A rubber stopper for a waterproof connector includes: a first elastic member including a first contact face, and first wire fitting grooves each having an arc cross-section; and a second elastic member including a second contact face and second wire fitting grooves each having an arc cross-section. When the first contact face contacts the second contact face, circular cross-section is formed by the arc cross-sections of the first and second wire fitting grooves to fit wires into the first and second wire fitting grooves. Arc length of the arc cross-section of the first wire fitting groove is different from arc length of the arc cross-section of the second wire fitting groove so that a center of the circular cross-section is disposed away from the first and second contact faces in a direction perpendicular to an extending direction of the first and the second contact faces.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 12, 2009
    Applicant: YAZAKI CORPORATION
    Inventors: Nobuyuki SAKAMOTO, Keiko ISHIDA, Kazuki ZAITSU
  • Publication number: 20090004889
    Abstract: A board-connecting connector including a pair of inner housings opposed to each other for receiving elastic contact terminals with respect to a circuit board, a guiding plate having a sloped guiding part for engaging inner housing-driven projections and guiding the inner housings close to each other, and an outer housing for receiving the inner housings and the guide plate, and holding the guide plate. When the circuit board is fully inserted into the pair of inner housings, the circuit board abuts on the inner housings, and pushes to move the inner housings along the guiding plate.
    Type: Application
    Filed: June 5, 2008
    Publication date: January 1, 2009
    Applicant: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Keiko Azuma, Kazuki Zaitsu
  • Publication number: 20080286997
    Abstract: A connector includes a first and a second terminal portions each having: a substrate pressing portion; a spacer pressing portion; and a fulcrum portion arranged between the substrate pressing portion and the spacer pressing portion, a spacer arranged between the spacer pressing portions of the first and the second terminal portions, and a clipping section formed of the substrate pressing portions of the first and the second terminal portions. The clipping section opens and closes while operating the fulcrum portions as a fulcrum. The spacer pressing portions of the first and the second terminal portions close via the fulcrum when the clipping section opens.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 20, 2008
    Applicant: YAZAKI CORPORATION
    Inventors: Nobuyuki SAKAMOTO, Keiko ISHIDA, Kazuki ZAITSU
  • Patent number: 7381090
    Abstract: A connector having a sealing function, which can be disassembled and also assembled easily, is provided. The connector includes: a connector housing which receives a terminal fitting attached to an end of an electric wire; a sealing member which includes sealing pieces made of resilient material positioning the electric wire between the sealing pieces and a holding means holding the sealing pieces at predetermined positions; and an outer housing which receives the connector housing and the sealing member, wherein the sealing pieces maintain a waterproof characteristic between the outer housing and the electric wire when the connector housing and the sealing member are received in the outer housing.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: June 3, 2008
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu, Keiko Azuma
  • Publication number: 20080119079
    Abstract: The present invention is to provide a rubber plug for maintaining waterproof performance with the rubber plug scratched, and a waterproof connector utilizing the rubber plug. The rubber plug includes oil reservoirs to reserve oil bleeding from the rubber plug. The oil reservoirs are formed as recesses circularly disposed in top portions of lip portions and closely contact around terminals connected with electrical cables. The oil reservoirs feed oil to the scratch caused in the rubber plug to maintain sealability.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 22, 2008
    Applicant: Yazaki Corporation
    Inventors: Shogo Suzuki, Kazuki Zaitsu
  • Publication number: 20080111320
    Abstract: A connector including seal bodies having an excellent sealing characteristic is provided. The seal body puts an electric wire between the seal body and the other seal body so as to maintain a watertight characteristic between the electric wire and the seal bodies. The seal body includes: an abutting surface of the seal body, which abuts against a mating abutting surface of the other seal body when the seal bodies overlap each other; a groove which positions the electric wire inside the seal bodies; a lip part which projects from an inner surface of the groove and from the abutting surface.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 15, 2008
    Applicant: Yazaki Corporation
    Inventors: Shogo Suzuki, Kazuki Zaitsu
  • Patent number: 7344408
    Abstract: A waterproof packing includes: a core member including an electric wire passing part inside and a contacting part for fitting to a mounting side outside; and thermoplastic adhesive adhering to at least the electric wire passing part and the contacting part, wherein the waterproof packing adheres to an electric wire with the thermoplastic adhesive of the electric wire passing part and the waterproof packing adheres to the mounting side with the thermoplastic adhesive of the contacting part by heating. A waterproof connector includes: the waterproof packing; a connector housing for inserting an electric wire having a terminal therein; and a packing receiving part of the connector housing, wherein the waterproof packing is inserted in the packing receiving part as the mounting side.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: March 18, 2008
    Assignee: Yazaki Corporation
    Inventors: Tetsuo Kato, Kazuki Zaitsu
  • Patent number: 7326080
    Abstract: The connector includes: a connector housing for receiving terminal fittings; a rear holder which includes a plurality of holders made of synthetic resin for positioning an electric wire attached to the terminal fitting between the holders, the rear holder being mounted to the connector housing when the holders are attached to one another; and a sealing member which includes a plurality of sealing pieces made of resilient material for positioning the electric wire between the sealing pieces, the sealing member maintaining a waterproof characteristic between the sealing member and the electric wires when the holders are attached to the respective sealing pieces, the holders are attached to one another, and the rear holder is mounted to the connector housing.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: February 5, 2008
    Assignee: Yazaki Corporation
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu, Kei Sato
  • Publication number: 20070254513
    Abstract: The object of the invention is to provide a connector assembly having enough waterproof performance, without needing high insertion force during the assembly process. In accordance with the present invention, there is provided a connector assembly 1 comprising a plug assembly 7; a header assembly 5 configured to be mated with the plug assembly 7 while forming an opening between the plug assembly 7 and the inside of the header assembly 5; holders 18d and 18e configured to apply pressure on the plug assembly in the direction of insertion of the plug assembly 7 into the header assembly 5; and a sealing member 4 configured to be pushed out toward the opening in response to the pressure applied by the holders 18d and 18e after insertion of the plug assembly 7 into the header assembly 5, in order to plug and seal the opening.
    Type: Application
    Filed: April 11, 2007
    Publication date: November 1, 2007
    Applicant: YAZAKI CORPORATION
    Inventors: Keiko Azuma, Kazuki Zaitsu
  • Publication number: 20070249223
    Abstract: A connector having a sealing function, which can be disassembled and also assembled easily, is provided. The connector includes: a connector housing which receives a terminal fitting attached to an end of an electric wire; a sealing member which includes sealing pieces made of resilient material positioning the electric wire between the sealing pieces and a holding means holding the sealing pieces at predetermined positions; and an outer housing which receives the connector housing and the sealing member, wherein the sealing pieces maintain a waterproof characteristic between the outer housing and the electric wire when the connector housing and the sealing member are received in the outer housing.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 25, 2007
    Applicant: YAZAKI CORPORATION
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu, Keiko Azuma
  • Publication number: 20070197090
    Abstract: The connector includes: a connector housing for receiving terminal fittings; a rear holder which includes a plurality of holders made of synthetic resin for positioning an electric wire attached to the terminal fitting between the holders, the rear holder being mounted to the connector housing when the holders are attached to one another; and a sealing member which includes a plurality of sealing pieces made of resilient material for positioning the electric wire between the sealing pieces, the sealing member maintaining a waterproof characteristic between the sealing member and the electric wires when the holders are attached to the respective sealing pieces, the holders are attached to one another, and the rear holder is mounted to the connector housing.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 23, 2007
    Applicant: YAZAKI CORPORATION
    Inventors: Nobuyuki Sakamoto, Kazuki Zaitsu, Kei Sato
  • Patent number: 7238036
    Abstract: The present invention is to provide a connector having watertight between a cover and a housing, and preventing a filler from leaking out of fitting faces therebetween. The housing has a housing groove, at a side of the cover, defined with a first and second housing walls. The cover has a cover groove, at a side of the housing, defined with a first and second cover walls. When the cover is attached to the housing, a first and second thin end portions of the first and second cover walls enter into the housing groove to form a filling space of the filler around a connector block of the housing. The filler injected into the filling space expands and presses the first and second thin end portions to deform and closely abut the first and second housing walls.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: July 3, 2007
    Assignee: Yazaki Corporation
    Inventors: Kei Sato, Kazuki Zaitsu
  • Publication number: 20070049091
    Abstract: The present invention is to provide a connector having watertight between a cover and a housing, and preventing a filler from leaking out of fitting faces therebetween. The housing has a housing groove, at a side of the cover, defined with a first and second housing walls. The cover has a cover groove, at a side of the housing, defined with a first and second cover walls. When the cover is attached to the housing, a first and second thin end portions of the first and second cover walls enter into the housing groove to form a filling space of the filler around a connector block of the housing. The filler injected into the filling space expands and presses the first and second thin end portions to deform and closely abut the first and second housing walls.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 1, 2007
    Applicant: YAZAKI CORPORATION
    Inventors: Kei Sato, Kazuki Zaitsu