Apparatus for securing an electronic unit to an avionics tray

Details Apparatus for securing an electronic unit to an avionics tray Apparatus for securing an electronic unit to an avionics tray

1983-09-01

1985-03-26

Hall, Carl E.

Metal working

Means to assemble or disassemble

Means to assemble electrical device

29758, 29764, 361395, 361399, H05K 1304

Patent

active

045064393

ABSTRACT:
Apparatus for removing and securing a plug-in electronic unit or the like to or from an avionics tray comprises a threaded spindle carrying a transverse pin at one end thereof and having an arrangement of three concentric sleeves located about the spindle. Stop members are provided to limit the movement of the sleeves in both axial directions along the threaded spindle. A rotatable grip is fitted about the innermost of the three concentric sleeves at that end of the sleeve remote from the transverse pin. A ring member is positioned about the middle of the three sleeves and cooperates with an extended flange of the latter to define an annular recess which contains a resilient element. A torque-limiting arrangement is provided between the rotatable grip and a co-operating surface portion of the middle of the three sleeves. The outermost sleeve has, its end closest to the transverse pin, a radial flange which together with said ring member defines an annular recess capable of receiving a hook forming part of the attachment mechanism of an electronic unit. In use, rotation of the rotatable grip allows an electronic unit to be inserted into an avionics tray with a predetermined degree of force, this being adjusted via the torque limiting arrangement. Rotation of the rotatable grip in the opposite sense effects removal of the electronic unit from the avionics tray.

REFERENCES:
patent: 3147005 (1964-09-01), Miller
patent: 4223934 (1980-09-01), Canceglia et al.

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