Patents by Inventor Mitsunori Kitajima

Mitsunori Kitajima 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: 10355404
    Abstract: A housing (12) of a board connector (10) to be connected to a circuit board (P) is disposed such that a connection surface to a mating connector (50) is exposed to outside through an opening (41) of a case (40) capable of accommodating the circuit board (P) inside. The housing (12) includes outer locking protrusions (31) for locking a peripheral edge part of the opening (41) of the case (40) from outside of the case (40) so that the board connector (10) will not displace into the case (40) due to forces exerted by a mating connector (50) during a connection operation.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 16, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Kentaro Hirai, Mitsunori Kitajima
  • Patent number: 10224664
    Abstract: A board connector (10) has a tubular housing (20) that includes a back wall (25) with penetrating through holes (26). A terminal fitting (60) includes a tab (61) to be arranged to project into the housing (20) through the through hole (26), a press-fit portion (62) to be arranged inside the through hole (26) and a lead portion (63) to be arranged along a surface of a board (90). The press-fit portion (62) is inserted into the through hole (26) with an overlapping margin in a cross-section along a height direction in which the lead portion (63) faces the surface of the board (90). The tab (61) is inserted into the through hole (26) without any overlapping margin in the same cross-section.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: March 5, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Mitsunori Kitajima
  • Publication number: 20180248291
    Abstract: A board connector (10) has a tubular housing (20) that includes a back wall (25) with penetrating through holes (26). A terminal fitting (60) includes a tab (61) to be arranged to project into the housing (20) through the through hole (26), a press-fit portion (62) to be arranged inside the through hole (26) and a lead portion (63) to be arranged along a surface of a board (90). The press-fit portion (62) is inserted into the through hole (26) with an overlapping margin in a cross-section along a height direction in which the lead portion (63) faces the surface of the board (90). The tab (61) is inserted into the through hole (26) without any overlapping margin in the same cross-section.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 30, 2018
    Inventor: Mitsunori Kitajima
  • Publication number: 20180166824
    Abstract: A housing (12) of a board connector (10) to be connected to a circuit board (P) is disposed such that a connection surface to a mating connector (50) is exposed to outside through an opening (41) of a case (40) capable of accommodating the circuit board (P) inside. The housing (12) includes outer locking protrusions (31) for locking a peripheral edge part of the opening (41) of the case (40) from outside of the case (40) so that the board connector (10) will not displace into the case (40) due to forces exerted by a mating connector (50) during a connection operation.
    Type: Application
    Filed: November 21, 2017
    Publication date: June 14, 2018
    Inventors: Kentaro Hirai, Mitsunori Kitajima
  • Patent number: 9431744
    Abstract: A retainer (10) is formed from a body (18) and extended portions (11). The body (18) includes two deflectable legs (20) and the legs (20) include locking claws (21) to be held onto a male connector housing (1) at a partial locking position and locking protrusions (22) to be locked to the male terminal fittings (5). A pushing surface (19) of the retainer (10) is extended in a front-back direction by the extended portions (11). A posture correcting portion (23) is formed between the legs (20) and fits into a cut recess (15) of a partition wall (14) to be locked therein when the retainer (10) is at a full locking position, thereby restricting an oblique posture of the retainer (10).
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: August 30, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Shigeto Kataoka, Mitsunori Kitajima
  • Patent number: 9306311
    Abstract: A connector includes a housing (10), terminal fittings (30) to be inserted into the housing (10), a retainer (20) configured to retain the terminal fittings (30) by being mounted into the housing (10) in a direction intersecting an inserting direction of the terminal fittings (30), resilient locks (25) formed on a base end of the retainer (20) in a mounting direction into the housing (10) and configured to hold the retainer (20) in a state mounted in the housing (10) by being locked to the housing (10). Slide-contact portions (28) formed on a tip side of the retainer (20) in the mounting direction into the housing (10) and extending parallel to the mounting direction of the retainer (20), and guides (16) formed in the housing, extending parallel to the mounting direction of the retainer (20) and to be brought into sliding contact with the slide-contact portions (28).
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: April 5, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsunori Kitajima, Shigeto Kataoka
  • Patent number: 9257773
    Abstract: A female connector (F) includes a retainer (30) to be housed into a mounting hole (14) and selectively mounted, in a housing (10), at a partial locking position for allowing insertion of terminal fittings (50) and a full locking position for locking already inserted terminal fittings (50). A base (33) is at a rear end of the retainer (30) in a mounting direction into the housing (10) and is located outside a mounting hole (14) when the retainer (30) is at the partial locking position. Backlash eliminating portions (21, 22, 41, 42) are formed on the base (33) and in the housing (10) and are configured to restrict a relative displacement of the retainer (30) with respect to the housing (10) when the retainer (30) is at the partial locking position.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 9, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsunori Kitajima, Shigeto Kataoka
  • Patent number: 9231342
    Abstract: A lock arm (33) is arranged on the upper surface of a female connector housing (27), and lock-arm protection walls (37) stand at opposite widthwise sides of the lock arm (33). Detector protection walls (38) are provided behind the lock-arm protection walls (37), and first and second lock receiving portions (43, 44) are formed on the inner surfaces thereof. Two inwardly deflectable locking arms (56) are formed on a detector (39) and locked to the first or second lock receiving portions (43, 44) to restrict a backward movement when the detector (39) is at an initial position and a detecting position. The locking arms (56) are arranged utilizing dead spaces behind the lock-arm protection walls (37).
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: January 5, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Shigeto Kataoka, Mitsunori Kitajima
  • Patent number: 8998626
    Abstract: A female connector (F) is formed such that a block-shaped terminal accommodating portion (21) accommodating female terminal fittings (24) is surrounded by a substantially rectangular tubular fitting (35). A male connector (M) includes a rectangular tubular receptacle (11) to be fit into a clearance between the terminal accommodating portion (21) and the tubular fitting (35) and tabs (13) at the leading ends of male terminal fittings (12) are surrounded by the receptacle (11). Bulges (51, 52 and 53) are formed on four wall portions (37, 38 and 39) of the tubular fitting 35 and bulge outward of the tubular fitting (35) from an opening edge part at a front side of the tubular fitting (35).
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 7, 2015
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsunori Kitajima, Youjirou Hashimoto
  • Publication number: 20150037998
    Abstract: A lock arm (33) is arranged on the upper surface of a female connector housing (27), and lock-arm protection walls (37) stand at opposite widthwise sides of the lock arm (33). Detector protection walls (38) are provided behind the lock-arm protection walls (37), and first and second lock receiving portions (43, 44) are formed on the inner surfaces thereof. Two inwardly deflectable locking arms (56) are formed on a detector (39) and locked to the first or second lock receiving portions (43, 44) to restrict a backward movement when the detector (39) is at an initial position and a detecting position. The locking arms (56) are arranged utilizing dead spaces behind the lock-arm protection walls (37).
    Type: Application
    Filed: July 22, 2014
    Publication date: February 5, 2015
    Inventors: Shigeto Kataoka, Mitsunori Kitajima
  • Publication number: 20150038022
    Abstract: A retainer (10) is formed from a body (18) and extended portions (11). The body (18) includes two deflectable legs (20) and the legs (20) include locking claws (21) to be held onto a male connector housing (1) at a partial locking position and locking protrusions (22) to be locked to the male terminal fittings (5). A pushing surface (19) of the retainer (10) is extended in a front-back direction by the extended portions (11). A posture correcting portion (23) is formed between the legs (20) and fits into a cut recess (15) of a partition wall (14) to be locked therein when the retainer (10) is at a full locking position, thereby restricting an oblique posture of the retainer (10).
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Inventors: Shigeto Kataoka, Mitsunori Kitajima
  • Publication number: 20150031250
    Abstract: A female connector (F) includes a retainer (30) to be housed into a mounting hole (14) and selectively mounted, in a housing (10), at a partial locking position for allowing insertion of terminal fittings (50) and a full locking position for locking already inserted terminal fittings (50). A base (33) is at a rear end of the retainer (30) in a mounting direction into the housing (10) and is located outside a mounting hole (14) when the retainer (30) is at the partial locking position. Backlash eliminating portions (21, 22, 41, 42) are formed on the base (33) and in the housing (10) and are configured to restrict a relative displacement of the retainer (30) with respect to the housing (10) when the retainer (30) is at the partial locking position.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 29, 2015
    Inventors: Mitsunori Kitajima, Shigeto Kataoka
  • Publication number: 20150031230
    Abstract: A connector includes a housing (10), terminal fittings (30) to be inserted into the housing (10), a retainer (20) configured to retain the terminal fittings (30) by being mounted into the housing (10) in a direction intersecting an inserting direction of the terminal fittings (30), resilient locks (25) formed on a base end of the retainer (20) in a mounting direction into the housing (10) and configured to hold the retainer (20) in a state mounted in the housing (10) by being locked to the housing (10). Slide-contact portions (28) formed on a tip side of the retainer (20) in the mounting direction into the housing (10) and extending parallel to the mounting direction of the retainer (20), and guides (16) formed in the housing, extending parallel to the mounting direction of the retainer (20) and to be brought into sliding contact with the slide-contact portions (28).
    Type: Application
    Filed: July 2, 2014
    Publication date: January 29, 2015
    Inventors: Mitsunori Kitajima, Shigeto Kataoka
  • Patent number: 8894450
    Abstract: A connector (10) includes a retainer (30) made of synthetic resin for mounting in a housing (11) at a partial locking position for permitting the insertion of a terminal fitting (20) into the housing (11) and at a full locking position for retaining the inserted terminal fitting (20). Locks (16, 35) are formed on the housing (11) and the retainer (30) and are engageable to hold the retainer (30) at the partial locking position. A pressure receiving surface (15) is formed on the housing (11) and is configured to restrict a movement of the retainer (30) toward the full locking position by pressing the retainer (30) in directions intersecting a moving direction of the retainer (30) from the partial locking position to the full locking position when the retainer (30) is at the partial locking position.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 25, 2014
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsunori Kitajima, Toshikazu Sakurai
  • Patent number: 8777648
    Abstract: A connector includes a one-piece rubber plug (30) arranged to cover a rear surface (10R) of an inner housing (10) and has seal holes (31) aligned with cavities 12. An outer housing (20) has a tubular portion (21) surrounding the inner housing (10) and a rear wall (24) covering a rear surface (30R) of the one-piece rubber plug (30). The rear wall (24) has insertion holes (25) aligned with the seal holes (31). Locking holes (26A, 26B) are open on a rear surface (24R) of the rear wall (24), and locks (17A, 17B) on the inner housing (10) engage with the locking holes (26A, 26B) to lock the housings (10, 20) in an assembled state.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 15, 2014
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsunori Kitajima, Youjirou Hashimoto, Kazuo Nakai
  • Publication number: 20130273764
    Abstract: A connector (10) includes a retainer (30) made of synthetic resin for mounting in a housing (11) at a partial locking position for permitting the insertion of a terminal fitting (20) into the housing (11) and at a full locking position for retaining the inserted terminal fitting (20). Locks (16, 35) are formed on the housing (11) and the retainer (30) and are engageable to hold the retainer (30) at the partial locking position. A pressure receiving surface (15) is formed on the housing (11) and is configured to restrict a movement of the retainer (30) toward the full locking position by pressing the retainer (30) in directions intersecting a moving direction of the retainer (30) from the partial locking position to the full locking position when the retainer (30) is at the partial locking position.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Mitsunori Kitajima, Toshikazu Sakurai
  • Patent number: 8444444
    Abstract: A connector (A) is provided with a housing (10) made of synthetic resin, press-fit holes (13) formed through the housing (10) and each having a substantially rectangular cross-sectional shape, and terminal fittings (20) to be inserted into the press-fit holes (13). Each terminal fitting (20) has a first press-fit portion (25) with a substantially rectangular cross-section and brings two substantially parallel flat areas (26) into surface contact with the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner. The first press-fit portion (25) has first and second bulges (27A, 27B) that locally bulge in forward and backward directions parallel to the two flat areas over the entire areas in a width direction connecting the two flat areas (26) and press the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: May 21, 2013
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Mitsunori Kitajima
  • Patent number: 8366466
    Abstract: An air hole (29) is formed to penetrate through a back wall (23) of a receptacle (22). Leading end portions (61) of male terminal fittings (60) are inserted into an inner portion (28) of a tube (27) and the air hole (29) communicates with the inner portion (28). If a female connector is connected in a posture inclined from a proper connecting posture, the tube (27) interferes with the female connector to prevent any further connecting operation. The tube (27) surrounds a plurality of male terminal fittings (60) together. A wall (31) for partially closing openings of the inner portion (28) is formed at a leading end portion of the tube (27).
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: February 5, 2013
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Youjirou Hashimoto, Mitsunori Kitajima
  • Publication number: 20120329299
    Abstract: A female connector (F) is formed such that a block-shaped terminal accommodating portion (21) accommodating female terminal fittings (24) is surrounded by a substantially rectangular tubular fitting (35). A male connector (M) includes a rectangular tubular receptacle (11) to be fit into a clearance between the terminal accommodating portion (21) and the tubular fitting (35) and tabs (13) at the leading ends of male terminal fittings (12) are surrounded by the receptacle (11). Bulges (51, 52 and 53) are formed on four wall portions (37, 38 and 39) of the tubular fitting 35 and bulge outward of the tubular fitting (35) from an opening edge part at a front side of the tubular fitting (35).
    Type: Application
    Filed: June 5, 2012
    Publication date: December 27, 2012
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Mitsunori Kitajima, Youjirou Hashimoto
  • Publication number: 20120309234
    Abstract: A connector includes a one-piece rubber plug (30) arranged to cover a rear surface (10R) of an inner housing (10) and has seal holes (31) aligned with cavities 12. An outer housing (20) has a tubular portion (21) surrounding the inner housing (10) and a rear wall (24) covering a rear surface (30R) of the one-piece rubber plug (30). The rear wall (24) has insertion holes (25) aligned with the seal holes (31). Locking holes (26A, 26B) are open on a rear surface (24R) of the rear wall (24), and locks (17A, 17B) on the inner housing (10) engage with the locking holes (26A, 26B) to lock the housings (10, 20) in an assembled state.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Mitsunori Kitajima, Youjirou Hashimoto, Kazuo Nakai