The system of pins with rubber cap for protection of keys, and rubber rings for lifting cord hanging freely with the purpose of acoustic insulation on keyboards, percussion

摘要

The system of pins with rubber cap for protection of keys, and rubber rings for lifting cord hanging freely with the purpose of acoustic insulation on keyboards and percussion.This utility model patent of a system of pins with rubber cap for protection of keys, and rubber rings for lifting cord hanging freely with the purpose of acoustic insulation on keyboards, percussion is main characteristic support tot Al keys in relation to the walls of the base.The support of the keys allows the emission of a sound "clean", unlike the found in the state of the art, where there is interference noise due to the contact of the unwanted keys with the walls of the base. The improvement provides low cost, ease of manufacture and installation, and functionality.The said system of pins with rubber cap (1) for the protection of keys (2) uses, also, rubber rings (3) for lifting the cord (4) which is suspended in free. The cord (4) is tensioned and positioned on the rubber rings (3) so that it is not possible to the contact between the keys (2) and the walls of the base (6).The total isolation of the keys (2) allows the emission of a sound clear and without interference, as desired by all persons using apparatus, and musical instruments equipped with keyboard.