Cavity plate

The parts of an electronic product that serve to keep the components in place and force their terminals to make contact against a printed circuit board.

Cavity plates can be 3D printed or CNC milled. 

A mold of a cavity plate stepped and repeated can be made to produce them in large quantities.

They should be made of recyclable materials.

Cavities

The holes in the cavity plate that adapt to the shape of components to keep them in place. 

They may have glue dots placed at their bottom before inserting the components upside down so they don't fall all over the place. 

They can be 3D printed as part of the plate or CNC milled.

Cavity plate assembly

Components are placed in the cavities in a cavity plate. This assembly is then mounted and pressed against a printed circuit board. The cavities are designed to adapt to the variations of the component dimension variations and just deep enough to create a force that presses the component pins against the printed circuit board pads. 

Cavity retainers

These are conical shaped pins that protrude from a cavity plate. 

The pins fit in holes in the printed circuit board tightly as they are pushed in.

The pins can be augmented with the use of small screws to provide the contact force when assembled.