KEYBOARD INSTRUMENT
FIG8 is an enlarged planar view of the main portion showing a state where the front end of the key shown in FIG7 has been displaced in the array direction of the keys
More specifically, in this keyboard instrument, in a state where a key 2 has been supported by the shaft sections 21 of the corresponding pair of key supporting pieces 17 being arranged in the shaft holes 20 of the pair of the attachment pieces 18 of the key 2, when one of the pair of attachment pieces 18 on the left side (upper side in FIG8) in the array direction of the keys 2 is shifted rearward within the range of the corresponding second spaces S2 and the other one of the pair of attachment pieces 18 on the right side (lower side in FIG8) in the array direction of the keys 2 is shifted frontward within the range of the corresponding second spaces S2, the front end of the key 2 is displaced leftward (toward the upper side in FIG8) in the array direction of the keys 2, whereby a space between the front end of the key 2 and the front end of an adjacent key 2 can be easily and favorably adjusted. As a result of this structure, spaces between the keys 2 can be aligned to be even.
planar view
8
board supporting sections
17
key supporting pieces
22
pressing ribs pressing rib
18
attachment pieces attachment piece
20
shaft holes shaft hole
21
shaft sections shaft section
23
deformation restriction section deformation restriction sections
13
attachment section attachment sections
['1. A keyboard instrument comprising: a plurality of keys (2); and a keyboard chassis (1), wherein each key (2) has a shaft (21) or a shaft hole (20) provided on one end side thereof, wherein the keyboard chassis (1) is provided with shafts (21) when the plurality of keys (2) has shaft holes (20), and is provided with shaft holes (20) when the plurality of keys (2) has shafts (21), wherein the keyboard chassis (1) supports the plurality of keys (2) by the shafts (21) being arranged in the shaft holes (20), wherein first spaces (S1) and second spaces (S2) are formed between an inner surface of the shaft hole (20) and the shaft (21), wherein the first spaces (S1) are positioned in a vertical direction of the key (2), and the second spaces (S2) are positioned in a longitudinal direction of the key (2), and wherein the second spaces (S2) are larger than the first spaces (S1).', '3. The keyboard instrument according to claim 1 or 2, wherein the keyboard chassis (1) or the plurality of keys (2) has pressing ribs (22) each of which is thinner than a corresponding shaft (21) and positioned on a straight line extending in at least one of an upper direction and a lower direction from center of the corresponding shaft (21).', '5. The keyboard instrument according to any one of claims 1 to 4, wherein each key (2) includes a U-shaped section (13) provided on the one end side, wherein the keyboard chassis (1) has pairs of key supporting pieces (17) which support U-shaped sections (13) of the plurality of keys (2), wherein shaft holes (20) are provided in both sides of each U-shaped section (13), and wherein shafts (21) are provided on opposing surfaces of each pair of key supporting pieces (17) on the keyboard chassis (1).', '8. The keyboard instrument according to claim 7, wherein each key (2) has a deformation restriction section (23) which is provided on an upper portion of the U-shaped section (13) and regulates the resilient deformation.']