Patents by Inventor Tsuyoshi Hamai

Tsuyoshi Hamai 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: 20230122279
    Abstract: There is provided a connector including a seal member that seals a gap between an opening inner wall of an opening and a peripheral edge of a cover. The seal member includes a body portion having an annular shape along the peripheral edge of the cover, an extending portion that extends from an end portion of the body portion on a side of an outside along a cover surface of the cover, and a protruding portion that protrudes in a direction of intersecting with an extending direction of the extending portion and extends from the extending portion along the cover surface. The cover includes a recessed fitting portion into which the extending portion and the protruding portion of the seal member are fitted.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 20, 2023
    Inventors: Tsuyoshi Hamai, Takatoshi Suzuki, Junya Yamamoto
  • Publication number: 20230120275
    Abstract: There are provided a connector and a mounting structure, the connector including: a terminal fitting: an electric wire connected to the terminal fitting; a housing that includes a fitting portion having a shape protruding in a fitting direction with a mating part and accommodating the terminal fitting, an outer wall portion defining an internal space in which the electric wire is routed, and a hollow convex portion formed by a part of the outer wall portion protruding outward to have a convex shape in the fitting direction; and a fuse that includes a fused portion accommodated in a hollow portion of the convex portion and is connected to the electric wire.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 20, 2023
    Inventors: Tsuyoshi Hamai, Takatoshi Suzuki, Junya Yamamoto
  • Publication number: 20230122390
    Abstract: There is provided a connector including: a housing including a cylindrical wall portion; and a hollow annular front holder attached to the cylindrical wall portion to surround an outer periphery thereof. The front holder includes: a pair of first locking portions and a pair of operating portions arranged that are arranged to face with each other in a radial direction of the front holder. The connecter is configured such that: in a state where the front holder is fitted externally on the cylindrical wall portion, the pair of first locking portions is engaged with the cylindrical wall portion; and in response to an operation of displacing the pair of operating portions to approach with each other in the radial direction, the pair of first locking portions is displaced to release an engagement between the front holder and the cylindrical wall portion.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 20, 2023
    Inventors: Tsuyoshi Hamai, Takatoshi Suzuki, Junya Yamamoto
  • Patent number: 9711885
    Abstract: A fitting cylinder section 11 of a female terminal main body 10 includes a first side plate 11a from which a columnar body 15 for a rivet protrudes as one in a plurality of side wall plates forming a square cylinder shape, a leaf spring 20 fixed to the fitting cylinder section 11 has a rivet insertion hole 21a into which the columnar body 15 for the rivet can be inserted, and the fitting cylinder section 11 has a structure in which the leaf spring 20 is fixed to an inner section thereof by performing the press-molding in the square cylinder shape section after rivet-retaining the leaf spring 20 to the first side plate 11a in a deployment shape and before performing the press-molding in the square cylinder shape.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: July 18, 2017
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Takuya Hasegawa
  • Patent number: 9203190
    Abstract: A lock structure of a connector includes a flexible lock arm, a lock engaging part and a releasing lever part. The flexible lock arm fixed to the second connector housing at a base end portion thereof is extended in a fitting direction of the connector. The lock engaging part provided at a distal end portion of the flexible lock arm is configured to be locked with a locking part provided in the first connector housing. The releasing lever part connected to the lock engaging part is extended along the flexible lock arm, and is configured to be rotated together with the lock engaging part around a pivot which is movable while releasing the lock. A thickness of the flexible rock arm is gradually decreased from the base end portion to the lock engaging part.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: December 1, 2015
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Hiromasa Kubota
  • Publication number: 20150340790
    Abstract: A joint connector includes a connector housing having terminal accommodation chambers configured to accommodate terminal fittings and having elastically-deformable locking lances configured to engage with the corresponding terminal fittings, bus bars configured to connect the terminal fittings to each other, and a front holder to be installed in the connector housing from an opposite side to a side where the terminal fittings are inserted. The front holder has a holder main body integrated with the bus bars and lance deformation prevention portions configured to prevent elastic deformation of the locking lances. In an engagement state of the terminal fittings and the locking lances, the lance deformation prevention portions are configured to be inserted into spaces in which the locking lances are deflected.
    Type: Application
    Filed: October 30, 2012
    Publication date: November 26, 2015
    Inventors: Tsuyoshi HAMAI, Takashi MURO, Tomihiko NAGAYOSHI
  • Publication number: 20140314477
    Abstract: A connector 11 includes a connector housing 13, terminal fittings 17, and a spacer 15 which is placed in a spacer attachment hole 21. Each spacer side surface 29 has a first lock projection 31 and a second lock projection 33. Each connector housing inner surface 23 is formed with a provisionally engaging portion 41 with which the first lock projection 31 is engaged in a provisionally lock state, a completely locking portion 47 with which the first lock projection 31 is engaged in a completely lock state, and an insertion force increasing portion 55 with which the second lock projection 33 is kept in contact when the spacer 15 is moved from a provisionally lock position to a completely lock position.
    Type: Application
    Filed: September 6, 2012
    Publication date: October 23, 2014
    Applicant: YAZAKI CORPORATION
    Inventors: Tsuyoshi Hamai, Akihiro Tsuruta, Nobuyuki Mukoujima
  • Publication number: 20140179146
    Abstract: A lock structure of a connector includes a flexible lock arm, a lock engaging part and a releasing lever part. The flexible lock arm fixed to the second connector housing at a base end portion thereof is extended in a fitting direction of the connector. The lock engaging part provided at a distal end portion of the flexible lock arm is configured to be locked with a locking part provided in the first connector housing. The releasing lever part connected to the lock engaging part is extended along the flexible lock arm, and is configured to be rotated together with the lock engaging part around a pivot which is movable while releasing the lock. A thickness of the flexible rock arm is gradually decreased from the base end portion to the lock engaging part.
    Type: Application
    Filed: September 6, 2012
    Publication date: June 26, 2014
    Applicant: YAZAKI CORPORATION
    Inventors: Tsuyoshi Hamai, Hiromasa Kubota
  • Publication number: 20140134869
    Abstract: A lever connector includes a connector housing that has a terminal reception chamber, a joint terminal that is fixed to the connector housing and arranged in the terminal reception chamber, a connection terminal that is to be received in the terminal reception chamber by insertion thereof so as to contact with the joint terminal by elastic deformation of elastic contact pieces, and a locking means that locks the connection terminal received in the terminal reception chamber with the joint terminal to fix the connection terminal. The locking means has locking grooves provided on the joint terminal and locking tabs provided on wall parts that support the elastic contact pieces of the connection terminal.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: YAZAKI CORPORATION
    Inventors: Tsuyoshi HAMAI, Takumi NAKAGISHI, Tomihiko NAGAYOSHI
  • Publication number: 20140011410
    Abstract: A fitting cylinder section 11 of a female terminal main body 10 includes a first side plate 11a from which a columnar body 15 for a rivet protrudes as one in a plurality of side wall plates forming a square cylinder shape, a leaf spring 20 fixed to the fitting cylinder section 11 has a rivet insertion hole 21a into which the columnar body 15 for the rivet can be inserted, and the fitting cylinder section 11 has a structure in which the leaf spring 20 is fixed to an inner section thereof by performing the press-molding in the square cylinder shape section after rivet-retaining the leaf spring 20 to the first side plate 11a in a deployment shape and before performing the press-molding in the square cylinder shape.
    Type: Application
    Filed: June 22, 2012
    Publication date: January 9, 2014
    Applicant: YAZAKI CORPORATION
    Inventors: Tsuyoshi Hamai, Takuya Hasegawa
  • Patent number: 7896696
    Abstract: A divided connector, comprises a terminal having an electric contact part protruding from a main body front part and an electric wire attached under pressure to a main body rear part; an inner housing that allows the terminal inserted into an inner part to be engaged with a terminal engaging piece and attached and the main body front part to protrude from a front end; an outer housing that allows the inner housing inserted into an inner part from a rear part to be engaged with a flexible engaging piece and attached; a terminal positioning regulating wall provided in the outer housing and having a contact part inserting hole for inserting the electric contact part; and a front part positioning frame protruding in the rear surface of the terminal positioning regulating wall correspondingly to the contact part inserting hole to enclose and position the main body front part.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: March 1, 2011
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Eisuke Suzuki, Tomihiko Nagayoshi
  • Publication number: 20100136829
    Abstract: A divided connector, comprises a terminal having an electric contact part protruding from a main body front part and an electric wire attached under pressure to a main body rear part; an inner housing that allows the terminal inserted into an inner part to be engaged with a terminal engaging piece and attached and the main body front part to protrude from a front end; an outer housing that allows the inner housing inserted into an inner part from a rear part to be engaged with a flexible engaging piece and attached; a terminal positioning regulating wall provided in the outer housing and having a contact part inserting hole for inserting the electric contact part; and a front part positioning frame protruding in the rear surface of the terminal positioning regulating wall correspondingly to the contact part inserting hole to enclose and position the main body front part.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 3, 2010
    Inventors: Tsuyoshi Hamai, Eisuke Suzuki, Tomihiko Nagayoshi
  • Patent number: 7491071
    Abstract: An end portion of a shielding layer is inserted between an inner tubular portion and an outer tubular portion of a shield ring by the use of a tubular pushing jig, and in this condition when a shield shell is inserted into the shield ring in a direction opposite to the direction of inserting of the shielding layer, the shield ring is pressed by the shield shell, so that a gap between the inner tubular portion and the outer tubular portion decreases, and the shielding layer is firmly held between the inner and outer tubular portions, thereby achieving a fixed condition of the shielding layer. Namely, the shield ring and the shield shell are fixed to the end portion of the shielding layer.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: February 17, 2009
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Akihiro Nagao
  • Publication number: 20080113559
    Abstract: An end portion of a shielding layer is inserted between an inner tubular portion and an outer tubular portion of a shield ring by the use of a tubular pushing jig, and in this condition when a shield shell is inserted into the shield ring in a direction opposite to the direction of inserting of the shielding layer, the shield ring is pressed by the shield shell, so that a gap between the inner tubular portion and the outer tubular portion decreases, and the shielding layer is firmly held between the inner and outer tubular portions, thereby achieving a fixed condition of the shielding layer. Namely, the shield ring and the shield shell are fixed to the end portion of the shielding layer.
    Type: Application
    Filed: November 12, 2007
    Publication date: May 15, 2008
    Applicant: YAZAKI CORPORATION
    Inventors: Tsuyoshi HAMAI, Akihiro NAGAO
  • Patent number: 6739908
    Abstract: Housing-side intimate contact ribs are formed on a rear end surface of a male connector housing, and a holder-side intimate-contact ribs are formed on a mat seal holder which holds a mat seal on the male connector housing. These intimate-contact ribs are inserted respectively in inlet portions of intimate-contact cavity portions formed in the mat seal, thereby provisionally retaining the mat seal. In this condition, metal terminals can be easily and positively passed respectively through wire insertion holes in the mat seal.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: May 25, 2004
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Toshiharu Kudo, Masahiro Kanda
  • Patent number: 6740815
    Abstract: The locking structure includes a locking part configured to lock with mating members defining locking holes. The locking part includes at least two insertion parts. The insertion parts include pairs of guide walls defining insertion channels extending in respective directions for inserting and supporting mating members. The insertion parts include locking protrusions between guide walls for engaging with the locking holes of the mating members.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 25, 2004
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Toshiharu Kudo, Masahiro Kanda, Masanori Kikuchi
  • Patent number: 6695631
    Abstract: Connector assembly (2, 3) includes internal and external connector housings (7, 15) matable with each other. The assembly includes a cam projection (3A) provided to one of the internal and external connector housings. The assembly includes a lever (8) provided rotatably to another one of the internal and external connector housings. The lever defines a cam channel (13) for guiding the cam projection therein to mate the internal and external connector housings with each other. The assembly includes a false-assembly preventing structure (3Ba, 3Bb S1, S2) operative to prevent false-assembly of the internal and external connector housings at an initial mating. The lever is rotatable to push the cam projection to space the internal and external connector housings off.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: February 24, 2004
    Assignee: Yazaki Corporation
    Inventors: Tsuyoshi Hamai, Toshiharu Kudo, Tomohiko Kimura, Masahiro Kanda, Masanori Kikuchi
  • Patent number: 6568967
    Abstract: In the present invention, a protective cover is provided with, a base bottom portion and a cover portion which is disposed in the base bottom portion through a hinge. The protective cover can be attached to a connector so as to be fitted with a through-lock portion of the connector and the cover portion is then closed. The base bottom portion is formed in a gutter-shape and the rear end side of the base bottom portion is partially closed by a closing portion. In the present invention, a protective cover is also provided with, a cylindrical cover main body to be fitted with a connector, and a pair of opening-and-closing members disposed on the cover main body through hinges. The protective cover further includes securing holes for securing the opening-and-closing members to securing projections disposed on the cover main body, and securing pawls and securing frames for engaging the opening-and-closing members with each other.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 27, 2003
    Assignee: Yazaki Corporation
    Inventors: Shigemitsu Inaba, Kazuhiro Morishita, Tsuyoshi Hamai
  • Publication number: 20020157854
    Abstract: The locking structure includes a locking part configured to lock with mating members defining locking holes. The locking part includes at least two insertion parts. The insertion parts include pairs of guide walls defining insertion channels extending in respective directions for inserting and supporting mating members. The insertion parts include locking protrusions between guide walls for engaging with the locking holes of the mating members.
    Type: Application
    Filed: April 22, 2002
    Publication date: October 31, 2002
    Inventors: Tsuyoshi Hamai, Toshiharu Kudo, Masahiro Kanda, Masanori Kikuchi
  • Publication number: 20020160638
    Abstract: Connector assembly (2, 3) includes internal and external connector housings (7, 15) matable with each other. The assembly includes a cam projection (3A) provided to one of the internal and external connector housings. The assembly includes a lever (8) provided rotatably to another one of the internal and external connector housings. The lever defines a cam channel (13) for guiding the cam projection therein to mate the internal and external connector housings with each other. The assembly includes a false-assembly preventing structure (3Ba, 3Bb S1, S2) operative to prevent false-assembly of the internal and external connector housings at an initial mating. The lever is rotatable to push the cam projection to space the internal and external connector housings off.
    Type: Application
    Filed: April 25, 2002
    Publication date: October 31, 2002
    Inventors: Tsuyoshi Hamai, Toshiharu Kudo, Tomohiko Kimura, Masahiro Kanda, Masanori Kikuchi