Electronic module and plastic substrate to accept and hold the e

Details Electronic module and plastic substrate to accept and hold the e Electronic module and plastic substrate to accept and hold the e

1995-08-14

1999-02-02

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361736, 361679, 361741, 361748, 361752, 439 44, 439 95, 439542, 439282, 439946, 174 521, 174 522, 174 524, H05K 714

Patent

active

058673660

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to an electronic module, especially a storage module, having a strip on each of two opposite sides and a plastic substrate to accept and hold the electronic module in grooves corresponding to the strips in the module substrate on a printed-circuit board.
By means of the electronic modules, which are accepted in a module substrate on a printed-circuit board, system components, like for example central controller modules or communications processors of programmable controllers, are realizable with a variable memory capacity. Depending on the requirement of the automation task, they can be provided with a memory of variable size. At the same time, the electronic module and the plastic substrate to accept the module on the printed-circuit board must meet the demands of industrial capability.


SUMMARY OF THE INVENTION

The present invention provides an electronic module, especially a storage module, and a plastic substrate to accept the electronic module on a printed-circuit board which, using simple means, assures good electromagnetic compatibility and avoids potential displacements between the electronic module and its surroundings.
The plastic substrate can have two U-shaped rails. A strip is located on each of two opposite sides of the electronic module to accept and hold the module in grooves in the two U-shaped rails. A plastic frame is provided which accepts a fitted printed-circuit board and an electrically conductive covering, which is disposed on either an upper or lower side of the substrate which extends as far as the strips. The rails can be two-part elements such that a first rail section is secured in a second end rail section which has a connector for the electronic module by means of a releasable latch connection.
A covering can be placed on the upper and lower sides of the plastic frame. These coverings can be identical. The plastic frame has first openings in a peripheral area of the frame and the coverings have tabs extending through these openings which are bent at a right angle. The tabs extend through the openings and produce an electrical connection between the coverings. The plastic frame has second openings along the peripheral area of the frame, which are designed in such a way that they form a latch connection with hooks of the coverings. This latch connection can be permanent.
An electrically conductive flat spring, which can be galvanically tin-plated, is arranged inside on one limb of at least one U-shaped rail of the plastic substrate for contacting the covering of the module in the area of the strips. This flat spring is provided with at least one lug for the electrical connection to a reference potential. The flat spring is positioned against the covering, runs essentially parallel to the rail, rests with its both ends on the inner side of the limb, and has a curvature in the middle area. In a further embodiment, two flat springs are arranged opposite one another on the inner sides of the limbs of a U-shaped rail. These springs are joined to one another at at least one end by a part overlapping the yoke of the groove in the U-shaped rail.
A lug is designed as an extension prolongation on the end of a flat spring. This extension prolongation is led back, bent by 180.degree., on the outer side of the limb and is provided with a tab which covers a base plate of the plastic substrate in the area of a bore hole for fastening to a further printed-circuit board. The flat spring can be arranged in front in the area of the beginning of the rail and a lug is led to the front for the electrical connection to a front plate. A lug can be led upward to the side opposite a further printed-circuit board for the electrical connection to an adjacent printed-circuit board.
A part which joins the two flat springs is supported in a slot-shaped recess in a yoke of the rail and the two flat springs have projections on their opposite ends which extend into corresponding recesses in the limbs.
A reliable contacting of the upper as well as the

REFERENCES:
patent: 5330360 (1994-07-01), Marsh et al.
patent: 5483422 (1996-01-01), Bowen et al.
patent: 5548483 (1996-08-01), Feldman
patent: 5600539 (1997-02-01), Heys, Jr. et al.
Patent Abstracts of Japan, vol. 8, No. 55, P-260, JP-A-58-203687 (Canon K.K.), 24 May 1982.
Patent Abstracts of Japan, vol. 13, No. 135, P-851, JP-A-63-302490 (Mitsubishi Electric Corp.), 2 Jun. 1987.
Patent Abstracts of Japan, vol. 8, No. 55, P-260, JP-A-58-203686 (Canon K.K.), 21 May 1982.
IBM Technical Disclosure Bulletin, vol. 23, No. 5, Oct. 1980, M.I. Davis: Solid-State Cartridge System, pp. 1748-1750.
Datamation, Apr. 15, 1992, pp. 55-57: Tiny PC Cards Pack A Punch, Scott D. Palmer.

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