公开(公告)号：JP2003109692A

公开(公告)日：2003-04-11

申请号：JP2001296072

申请日：2001-09-27

Applicant: IBM

Inventor： UENO MAMORU ,  NAKAMURA SHINJI ,  OTSUBO KEIICHI ,  HANGAI TSUTOMU

IPC: H01R43/02 ,  H01R12/04 ,  H01R12/20

Abstract: PROBLEM TO BE SOLVED: To shorten required time and to reduce required cost in manufacturing a printed circuit board and connector assembly by soldering a straddling card edge connector to a printed circuit board. SOLUTION: Terminals 204a, 204b soldered to a first main face 104 are formed of a short one and a long one, and pressure connected to pads 112a, 112b in the different positions in a parallel direction with the first and second main faces and vertical to an edge 108 after mounting a connector 200 to the printed circuit board 100. By the time the solder 302 is hardened, the connector is thereby fixed firmly to the printed circuit board to resist rotational moment around the axis in a parallel direction to the edge and to save time required to attach and detach another tool for fixing.

公开(公告)号：JP2001034643A

公开(公告)日：2001-02-09

申请号：JP19461199

申请日：1999-07-08

Applicant: IBM

Inventor： NISHIO TOSHIHIKO ,  NAKAMURA SHINJI

IPC: H05K3/00 ,  G06F17/50

Abstract: PROBLEM TO BE SOLVED: To select an optimum grade of a printed circuit board according to the ratio of the total wiring length that is possible to be wired on the circuit board to the total wiring length to be wired on the board. SOLUTION: An input part 32 inputs the information on a printed circuit board to be designed, the information on the parts to be mounted on the circuit board and the parts connection information, a storage part 38 stores the information which are acquired from the past designs of circuit board in addition to the said circuit board information, parts information and connection information, a display part 36 displays various types of design information including those inputted information and an operation/control part 34 which carries out a prescribed operational processing by means of various information stored in the part 38 and also controls the parts 32, 36 and 38 respectively are included. In such a constitution, the ratio is found, from those information of the part 38, of the total wiring length that is possible to be wired on the circuit board to the total wiring length that is necessary for connecting the parts together and a grade of the circuit board is selected according to this decided rate.