A cable grommet is a tube or ring through which an
electrical cable
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwel ...
passes. They are usually made of rubber or metal.
The
grommet
Curtain grommets, used among others in shower curtains
A grommet is a ring or edge strip inserted into a hole through thin material, typically a sheet of textile fabric, sheet metal or composite of carbon fiber, wood or honeycomb. Grommets are ...
is usually inserted in holes in certain materials in order to protect, improve friction or seal cables passing through it, from a possible mechanical or chemical attack.
Grommets used as wire managers for furniture
A grommet can be used in furniture to protect wires, cables or cords for computer equipment or other electronic equipment in homes or offices. At the same time, they are used decoratively to embellish the furniture and can be bought in a large variety of sizes, colors and finishes.
The grommets usually consist of two pieces: A liner that goes into the hole of the furniture and a cap with a hole (often adjustable in size) for the cables to go through.
When there is no need to use them they can be blanked either by turning one piece 90° against the other or by inserting an extra plastic piece designed to fit that purpose.
Rubber grommets "anti-microphonism"
A rubber grommet is made of a resilient material (typically rubber), with the molding designed to hold it in place, so as to help to absorb vibrations, for example, between a tandem radio and the chassis or between
microphone
A microphone, colloquially called a mic (), or mike, is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and publi ...
and its tripod, keeping the two components "floating" mechanically decoupled one from another to prevent a characteristic coupling called ''
microphonism
Microphonics, microphony, or microphonism describes the phenomenon wherein certain components in electronic devices transform mechanical vibrations into an undesired electrical signal (noise). The term comes from analogy with a microphone, wh ...
''.
See also
*
Cable entry system
*
Cable gland
A cable gland (more often known in the U.S. as a cord grip, cable strain relief, cable connector or cable fitting) is a device designed to attach and secure the end of an electrical cable to the equipment. A cable gland provides strain-relief ...
References
External links
*{{Wiktionary inline, grommet
Radio technology
Fasteners