Hammer mechanism with key device and hammer device for striking a string of a keyboard instrument, with at least one modification for achieving a high impact repetition frequency

摘要

There are disclosed a key device (12) and a hammer device (16) which, when assembled, form a hammer mechanism (10) for striking a string of a keyboard instrument. The key device has a key body (30) formed of a base material and having a key body full weight determined by a key body full volume given by outer dimensions of the key body and a specific gravity of the base material. The hammer device has a total weight and at least one section (46, 50, 51) made of a base material suitable for that section. According to the invention, at least one modification is carried out on the key body (30) and / or on the hammer device (16) in that at least one recess or recess of base material is formed in / on the device (12, 16) and / or in at least a portion of the device (12, 16) the base material is replaced by a replacement material having a specific gravity lower than the specific gravity of the base material. Due to this modification, the weight of the device is reduced by at least 10% without modification by weight.