Vibration mount for electronic assemblies

Details Vibration mount for electronic assemblies Vibration mount for electronic assemblies

1988-06-15

1990-01-02

Pellinen, A. D.

Electricity: electrical systems and devices

Miscellaneous

174 522, 357 72, 26427211, H05K 506, H05K 720

Patent

active

048917346

ABSTRACT:
An elastomeric body encapsulates an electronic assembly, to be protected from vibration on shock, and is confined in a closed cavity of a structure subject to the vibration and shock. The body is cast in a separate mold having a cavity corresponding in shape and size to the closed cavity. The surface of the mold has projections to form indentations in the surface of the body. With the body in the closed cavities, the indentations are effectively voids and accept elastomeric material displaced from the body when the body expands relative to the cavity.
The preferred embodiment provides a strongback support with open cavities, each to receive a body. The strongback is inserted into a tube to complete the structure and close the open cavities. The strongback has wiring chambers to accept flexible leads connected to each body, and channels into which wire is potted, to extend from the leads to external circuitry.
To retain the bodies in the open cavities before closing, the elastomer bodies have projections that resiliently engage cooperation surfaces in the cavities.

REFERENCES:
patent: 3426139 (1969-02-01), Lauliac
patent: 3670091 (1972-06-01), Frantz et al.
patent: 3909504 (1975-09-01), Browne
patent: 4001655 (1977-01-01), Voyles et al.
patent: 4042955 (1977-08-01), Imai et al.
patent: 4739449 (1988-04-01), Kaufman

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