JPH0275696U

JPH0275696U -

Info

Publication number: JPH0275696U
Application number: JP15466688U
Authority: JP
Priority date: 1988-11-28
Filing date: 1988-11-28
Publication date: 1990-06-11

Description

[Brief explanation of drawings]

第１図は本考案に本考案の一実施例を示す要部
の断面図、第２図ａ，ｂ及び第３図は嵌合を示す
図、第４図は従来例を示す図である。１……鍵盤シヤーシ、２……鍵盤、３……ハン
マー、５……ブラケツト、６……軸ブロツク、７
，１０……軸孔、８，１１……溝、９，１２……
軸、１３，１５……取付孔、１４，１６……取付
足、１７……ストッパーである。 FIG. 1 is a sectional view of a main part of the present invention showing an embodiment of the present invention, FIGS. 2A, 2B and 3 are views showing fitting, and FIG. 4 is a view showing a conventional example. 1...Keyboard chassis, 2...Keyboard, 3...Hammer, 5...Bracket, 6...Axle block, 7
, 10...shaft hole, 8, 11... groove, 9, 12...
Shaft, 13, 15... mounting hole, 14, 16... mounting foot, 17... stopper.

Claims

[Scope of utility model registration request]

In a keyboard device having a key disposed on a keyboard chassis and a hammer interlocking with the key, an opening with the same circular cross-sectional shape and smaller than the diameter of the circle at the rear is provided at the pivot point at the rear of the key. A bracket forming a shaft with a substantially oval cross-sectional shape is inserted and fitted into a key provided with a groove to be held, and is attached to the upper surface of the chassis, and the key and groove are provided in the hammer rotation fulcrum part to form a shaft with a substantially oval cross-sectional shape. The shaft is inserted into and fitted into a shaft block formed of a plurality of shafts, and is attached to the bottom surface of the chassis, and the lower part of the key and the point of action of the hammer are brought into sliding contact, and when the key is pressed, the hammer is rotated in the anti-gravity direction. A keyboard device characterized by providing a key return force only by the action of gravity.