Patents Assigned to Ryosei Electro-Circuit Systems, Ltd.
  • Publication number: 20070105457
    Abstract: A connecting terminal 11 has a rectangular tube-like connecting portion 12 formed at a front side for receiving a cooperating tang-like connecting terminal and a U-shaped core conductor clamping portion 13a and a U-shaped sheath clamping portion 13b at a rear side. In front of the core conductor clamping portion 13a near the connecting portion 12 there are formed plate-like locking strips 14 to extend in a longitudinal direction in an upright fashion. A top portion 13a? of the core conductor clamping portion 13a is coupled substantially linearly with top portions 14? of the locking strips 14 by means of coupling portions 15 to reinforce a root portion of the core conductor clamping portion 13a.
    Type: Application
    Filed: June 17, 2004
    Publication date: May 10, 2007
    Applicant: RYOSEI ELECTRO-CIRCUIT SYSTEMS, LTD.
    Inventors: Yukifumi Machida, Yoshikazu Tanaka, Tetsu Hirose
  • Publication number: 20060141862
    Abstract: Upon releasing a locking arm from a connecting terminal by inserting a jig through a front holder, the jig could not be erroneously inserted into a terminal inserting hole. Connecting terminals 15 are inserted into a housing 11, and the connecting terminals are prevented from being pulled out of the housing backwardly by means of locking arms 13 arranged above the respective connecting terminals 15. The front holder is engaged with the housing by a clamping mechanism in an axial direction and is movable laterally in a direction perpendicular to the axial direction. A pair of a terminal inserting hole 17 and an arm operating hole 18 provided for respective connecting terminals are shifted laterally. In a first position of the front holder 16, the terminal inserting hole 17 is aligned with an axial line of a female-type connecting terminal 15, but the arm operating hole 18 is shifted laterally from the locking arm.
    Type: Application
    Filed: September 11, 2003
    Publication date: June 29, 2006
    Applicant: RYOSEI ELECTRO-CIRCUIT SYSTEMS, LTD.
    Inventors: Yukifumi Machida, Shinji Yamaguchi, Yoshikazu Tanaka, Takayuki Higuchi
  • Publication number: 20060057901
    Abstract: Even in the case of a bar-like small terminal connection, its strength is retained. In (a), a strip (21) made, for example, of a thin metal sheet having a thickness of 0.2 mm and a predetermined width is collapsed by rolling to a thickness of 0.16 mm as in (b). Subsequently, as in (c), the longitudinal opposite sides (22, 23) of the strip (21) are erected with respect to the base plate (24), then inwardly bent, as in (d), and folded onto the base (24), as in (e). Further, the folded opposite sides (22, 23) are erected together with the base plate (24) into a closely contacted state, whereupon as in (f), the folded body is mechanically compressed from all sides into a form having a 0.64-mm square cross section.
    Type: Application
    Filed: July 10, 2003
    Publication date: March 16, 2006
    Applicant: RYOSEI ELECTRO-CIRCUIT SYSTEMS, LTD.
    Inventors: Yukifumi Machida, Yoshikazu Tanaka, Hiroshi Ikagawa
  • Patent number: 6971927
    Abstract: In a connector terminal into which a cooperating male contact terminal can be smoothly inserted and a movable contact strip can be prevented from being buckled while a desired contact pressure can be attained, a connecting portion 11 is formed into a substantially box shape by folding a bottom plate 13, side plates 14, 15 (14 is not shown) continuously extending from respective sides of the bottom plate and a top plate 16 continuously extending from one of the side plates. A movable contact strip 17 is formed by folding back the top plate 16 around a gently curved portion 17a into a resilient spring having an inverted triangular shape including a contact portion 17b near an inwardly bent middle portion of the movable contact strip 17. A hole 17c is formed at an end portion of the movable contact strip 17 into which an engagement tip 16b formed by folding a part of the top plate 16 inwardly is inserted.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: December 6, 2005
    Assignees: Ryosei Electro-Circuit System, Ltd., Union Machinery Co., Ltd.
    Inventors: Tsugio Anbo, Yukifumi Machida, Shinji Yamaguchi, Seiichiro Hayashi, Nobuhiro Kimura
  • Patent number: 6699079
    Abstract: A rear holder 4 is inserted into a housing 3 from a rear end surface 24 at a provisional locking position in which the rear holder 4 is inserted into the housing 3 halfway and an insertion of connecting terminals is allowed, as well as at a sufficiently inserted complete locking position at which the inserted connecting terminals are locked. Within the housing 3, there are formed two rows of terminal accommodating holes 28 each accommodating respective connecting terminals. The rear holder 4 is formed in a substantially plate-like shape and includes a main body 41 which is inserted into slits 29 of the housing 3 and locking arms 45 which are inserted into respective terminal accommodating holes 28. A width of a locking arm 45 is slightly smaller than that of a terminal accommodating hole 28. Windows 37 are formed in the outer wall 21 of the housing 3 such that the terminal accommodating holes 28 are communicated with external through the windows 37.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: March 2, 2004
    Assignee: Ryosei Electro-Circuit Systems, Ltd.
    Inventors: Yukifumi Machida, Michiyasu Watanabe, Yoshikazu Tanaka, Ryo Sawada
  • Patent number: 6558206
    Abstract: A rear holder 4 is inserted into a housing 3 from a rear end surface 24 at a provisional locking position in which the rear holder 4 is inserted into the housing 3 halfway and an insertion of connecting terminals is allowed, as well as at a sufficiently inserted complete locking position at which the inserted connecting terminals are locked. Within the housing 3, there are formed two rows of terminal accommodating holes 28 each accommodating respective connecting terminals. The rear holder 4 is formed in a substantially plate-like shape and includes a main body 41 which is inserted into slits 29 of the housing 3 and locking arms 45 which are inserted into respective terminal accommodating holes 28. A width of a locking arm 45 is slightly smaller than that of a terminal accommodating hole 28. Windows 37 are formed in the outer wall 21 of the housing 3 such that the terminal accommodating holes 28 are communicated with external through the windows 37.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 6, 2003
    Assignee: Ryosei Electro-Circuit Systems, Ltd.
    Inventors: Yukifumi Machida, Michiyasu Watanabe, Yoshikazu Tanaka, Ryo Sawada
  • Patent number: 6171140
    Abstract: A joint connector easy to construct and involving less fabricating cost. The joint connector comprises a housing 3 for accommodating a plurality of connecting terminals 2 in a rear-side portion thereof, a bus bar 6 formed out of an electrically conductive metal plate and accommodated in the housing 3 for jointing any individual ones of the connecting terminals 2, a bus bar holder 7 for holding the bus bar 6, and a front cover 9 mounted to the housing 3 in such a way as to cover the bus bar holder 7. The bus bar holder 7 has a plurality of holes to be used for cutting the bus bar 6 to form an arbitrary circuit. The bus bar holder 7 and the bus bar 6 is mounted in the housing 3 so as to be movable in relation to the housing 3 in a direction orthogonal to the direction of the connecting terminals 2 being housed. When the front cover 9 is set in the housing 3, it causes the bus bar holder 7 to be moved and the bus bar 6 to be jointed with connecting terminals 2.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 9, 2001
    Assignee: Ryosei Electro-Circuit Systems, Ltd.
    Inventors: Tsugio Anbo, Yukifumi Machida, Yoshikatsu Hasegawa, Kenichi Suzuki
  • Patent number: 6165009
    Abstract: A connector including a reception housing which has four sector-shaped compartments defined by four radial partitions, and four sector-shaped end terminals are inserted into the four sector-shaped compartments from mutually orthogonal directions which are perpendicular to a direction in which an insertion housing is inserted into the reception housing. A number of male terminals are provided on each of the four sector-shaped end terminals, and a number of conductors of a plurality of flat cables are connected to the male terminals. On the insertion housing, a number of female terminals are provided each being connected to respective one of a number of electric wires. The male and female terminals are simultaneously coupled with each other by inserting the insertion housing into the reception housing.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: December 26, 2000
    Assignee: Ryosei Electro-Circuit Systems Ltd.
    Inventors: Tsugio Anbo, Katsuzi Shimazawa, Yukifumi Machida, Yoshikatsu Hasegawa
  • Patent number: 6083025
    Abstract: A connector including a reception housing in which a number of connecting terminals connected to respective conductors are accommodated, an insertion housing in which a number of second connecting terminals connected to respective conductors are accommodated, a holding housing for holding said reception housing, and a spring member arranged between the reception housing and the holding housing. When said insertion housing is inserted into said reception housing, said reception housing is pushed toward the insertion housing and first and second connecting terminals are coupled with each other by a restoring force of the spring means.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: July 4, 2000
    Assignee: Ryosei Electro-Circuit Systems Ltd.
    Inventors: Tsugio Anbo, Katsuzi Shimazawa, Yukifumi Machida, Yoshikatsu Hasegawa
  • Patent number: 5879192
    Abstract: An electric connector including a housing (14) and a rear holder (13). The rear holder (13) retains connecting terminals (12) therein and is fitted into the housing (14) from the rear of the housing. The rear holder (13) includes a front retaining portion (36a, 36b) for restricting forward movement of the connecting terminals (12), and a rear retaining portion (37) for restricting backward movement of the connecting terminals (12). The housing (14) has an inclined guide surface (34b, 43c) for receiving and guiding a respective connecting terminal (12) at an inclined angle into the housing.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: March 9, 1999
    Assignee: Ryosei Electro-Circuit Systems Ltd.
    Inventors: Yukifumi Machida, Hideo Kon, Yoshikazu Tanaka, Akihiro Kojima, Michiyasu Watanabe
  • Patent number: 5702272
    Abstract: A terminal connecting portion 22 of a connecting terminal 21 is formed in a form of a rectangular sleeve by a bottom plate 24, side plates 25, 26 bent upwardly from the bottom plate 24, and top plates 27, 28 bent horizontally from respective side plates 25, 26. Within the terminal connecting portion there is provided a movable contact strip 29 such that a contact portion 29a is directed toward the top plate 27, engaging projections 29b, 29c provided at a front portion of the movable contact strip 29 are engaged with wing portions 30b of a clamping strip 30, and engaging lugs 29d, 29e formed at the front portion of the movable contact strip 29 are engaged with front edges of the side plates 25, 26.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 30, 1997
    Assignee: Ryosei Electro-Circuit Systems, Ltd.
    Inventor: Yukihumi Machida