Fujitsu Corporation

Masaki Yoshimaru

Naohiko Kajio

Masahiro Suzuki

Takeshi Nishiyama

Yoshinori Uzuka

Takashi Imamoto

Michiyuki Yamamoto

Hirotoshi Muraishi

An apparatus has a plurality of printed board units each including a printed board, a frame to have the printed board arranged therein, a first rail to be arranged at a first lower end of an inner wall of the frame having the printed board located thereon in a lower opening of the frame, and a second rail to be arranged at a second lower end opposed to the first lower end in the opening; a housing including a rail holding unit to movably hold the first rail of a first printed board unit and the second rail of a second printed board unit adjacent to the first printed board unit among the plurality of printed board units; and a cooling fan to be arranged on an upper side or underside of the housing to send air into the frame.

Apparatus, mounting structure, and mounting method

A second printed wiring board is opposed to a surface of the first printed wiring board. A support member supports the first and second printed wiring boards. A first connector is mounted on the first printed wiring board. A second connector is mounted on the second printed wiring board. A wiring connects the first printed wiring board to the second printed wiring board. The first and second connectors are separately mounted on the first and second printed wiring boards, respectively. The sizes of the first and second printed wiring boards can be reduced as compared with the case where connectors are arranged in a row on a single printed wiring board, for example. This results in a reduction in the size of the printed circuit board unit. A large number of the printed circuit board units can be coupled to the back panel.

Printed circuit board unit

The spacer is formed as an elastic member with no ends thereof, which is detachably attached, by exploiting its elastic deformation, onto a printed wiring board to which is fixed an electronic component having a component package, on one of whose surfaces connection terminals are arranged. Since the spacer is attached on the printed wiring board to enclose an electronic component so as to seal a gap formed between the electronic component and a printed wiring board, it is possible to prevent foreign objects entering the gap, so that failures, such as insufficient insulation, caused by such foreign objects are also prevented. Since the spacer is easily removed from the printed wiring board, it is recyclable and economical.

Spacer, printed circuit board, and electronic equipment

Disclosed herein is an electronic device including a cabinet and a shelf accommodated in the cabinet. The shelf has a floating mechanism and a plurality of guide rails for guiding a plurality of printed circuit board units. The floating mechanism includes a plurality of holes formed through the shelf, each of the holes having a first diameter; a plurality of tapped holes formed through the cabinet so as to respectively correspond to the holes of the shelf; and a plurality of screws inserted through the holes of the shelf and threadedly engaged with the tapped holes of the cabinet, respectively, each of the screws having a second diameter smaller than the first diameter. The cabinet has a plurality of first guide pins, and the shelf has a plurality of second guide pins each having a diameter smaller than that of each first guide pin.

Growing community of inventors

Kawasaki, Japan

Masaki Yoshimaru