Abstract:
An elastic spacer is installed between tapered holes provided at upper and lower circuit boards to couple the circuit boards in parallel and thereby facilitate installation of the circuit boards on a back panel of a CPU unit. A connecting system of circuit boards is provided with first and second tapered holes (17, 27) which are provided at facing positions of first and second circuit boards (20, 21) and an elastic spacer (40) installed to the tapered holes in order to connect the circuit boards in parallel, wherein the elastic spacer (40) is formed with a first spacer (41) which is provided at one end with a tapered part (43) fitted into the first tapered hole (17), and a second spacer (42) which is provided at one end with a tapered part (44) fitted into second tapered hole (27). A spring (48) is inserted between the first and second spacers. The first spacer (41) is fitted in the tapered hole (17) and fastened by a screw (8S) to the first circuit board (20). The second circuit board (21) is fastened by a screw (8L) to the first spacer (41) in a state fitting the second tapered hole (27) over the second spacer (42) with the second circuit board approaching the first circuit board (20).
Abstract:
튜너 모듈을 메인 기판에 실장할 때의 효율을 현저하게 개선한다. 튜너 기판을 포함하는 튜너 모듈 본체를 회로 기판 본체에 실장 할 때에, 튜너 모듈 본체로부터 돌출된 제1 다리부의 테이퍼가 형성되어 있는 선단부를 회로 기판 본체에 형성된 제1 구멍에 삽입한다. 이어서, 튜너 모듈 본체로부터 돌출된, 제1 다리부보다 짧은 제2 다리부의 테이퍼가 형성되어 있는 선단부를 회로 기판 본체에 형성된 제2 구멍에 삽입한다. 그리고, 튜너 기판으로부터 돌출된 제2 다리부보다 짧은 신호 단자를 회로 기판 본체에 형성된 제3 구멍에 삽입한다.
Abstract:
PROBLEM TO BE SOLVED: To facilitate attachment of a CPU unit to a back panel by mounting an extensible spacer between tapering holes provided in the upper and lower circuit boards, thereby connecting the circuit boards in parallel.SOLUTION: A connection device is provided with first and second tapering holes 17, 27 in the opposite positions of the first and second circuit boards 20, 21, and used for connecting the circuit boards 20, 21 in parallel by mounting an extensible spacer 40 between them. In the connection device, the extensible spacer 40 is formed by a first spacer 41 having at its end a tapering part 43 that fits in the first tapering hole 17, and a second spacer 42 having at its end a tapering part 44 that fits in the second tapering hole 27. A spring 48 is inserted between the first and second spacers. The first spacer 41 is fitted in the tapering hole 17 and fixed to the first circuit board 20 with a screw 8S. After the tapering hole 27 is fitted on the second spacer 42, the second circuit board 21 is fixed to the first spacer 41 with a screw 8L while kept disposed near the first circuit board 20.
Abstract:
PROBLEM TO BE SOLVED: To provide a surface mounting component which increases the receptivity for warpage of a substrate when a component is mounted, simplifies coplanarity management of a connector, and prevents the occurence of solder defects.SOLUTION: A surface mount component C of this invention includes multiple leads 2, each of which has a body part 2a and a leg part 2b, solder accumulation parts 3, each of which is formed so as to have a top part at an electrical connection surface 2ba of the leg part 2b, and diffusion prevention parts 2c, each of which prevents solder forming the solder accumulation part 3 from diffusing along the lead.
Abstract:
PROBLEM TO BE SOLVED: To provide a sedimentation-type electrical connector for adjusting depth for enabling sedimentation under a circuit board. SOLUTION: The sedimentation-type electrical connector (2, 4, 6, 6') includes a body (21, 41, 61) and at least one limiting unit (22, 42, 62, 62'). The body (21, 41, 61) includes a front end part (212), a connection part (213) fitted at the front end part (212) and a top surface (211, 411). The limiting unit is fitted on one side of the body, and includes a plurality of limiting parts (221, 222, 223, 421, 621, 621') each arranged at a different level. One limiting part selected from the limiting parts at different levels of the limiting unit is engaged with a circuit board so as a distance from the top surface of the body to the circuit board to be varied. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent a board crack at pin terminal press-fitting or prevent cracks at a connection interface in a press-fit connection of a module, thereby increasing the reliability in the press-fit connection. SOLUTION: When the press-fit connection is performed by using the pin terminal which has a connection part which is forked and has a flat face parallel to a length direction and vertical to a separation direction of the pin terminal at the forked portion, a through-hole structure of a board is formed such that (1) the inside diameter at a central part of a through-hole in a thickness direction of the board is smaller than that on a surface and a backside of the board, and (2) a length of a portion connecting with the pin terminal at the central part of the through-hole is shorter than that of the flat face of the pin terminal, thereby the connection portion of the pin terminal and the through-hole is centralized to a narrow range, and an effect of a difference in a coefficient of linear expansion in the thickness direction of the board (the length direction of the pin terminal) is reduced, thereby improving the reliability in the connection part. COPYRIGHT: (C)2009,JPO&INPIT