Keyboard device for electronic musical instrument

Abstract

The present invention provides a keyboard device for electronic musical instrument having a key guide section capable of finely adjusting arrangement of keys. The device is configured as the key guide section (40) for guiding keys (10) in up-down direction includes: a support body (41) fixed on a key frame (20) and extending in a hollow section (14) of a key; a contact body (42) supported by a support body and contacting internal face of a side wall of the key to guide the key, the contact body (42) being supported in width direction of the key relative to the support body (41) in position adjustable mode. The key guide section (40) has a locking mechanism for holding the position adjustable contact body at adjusted position, the locking mechanism has a multi-stage buckling section arranged on each support body (41) and position adjustable contact body (42) and buckling each other.

Description

technical field [0001] The invention relates to a keyboard device for an electronic musical instrument. Background technique [0002] The keys of the keyboard device for electronic musical instruments are generally as figure 1 As shown, there is usually a hollow surrounded by the upper wall 11, the front wall 12 and the side wall 13, the front part of the key is guided by the key guide part 2, and the rear part of the key is used as the center to rotate in the up and down direction . The key guide part 2 is configured to extend from the key frame into the hollow part of the key, and contact the inner surface of the side wall of the key, which positions the key in the direction of the key arrangement, prevents the key from shaking in the left and right direction, and guides it. Do up and down motions. [0003] However, keys are often molded from resin, and even the same key may have slightly different shapes due to manufacturing errors during molding. In particular, if ...

AI Technical Summary

Problems solved by technology

[0010] However, the key guide in Patent Document 1 is a member that plastically deforms an insertion portion formed by bending a protruding piece of sheet metal upward to adjust the inclination. Since the plastic deformation is performed at the root of the insertion portion, Moreover, the key is guided by the upper end of the guide member inserted into the insertion part, so the deformation position and the guide position are separated from each other, making accurate position adjustment difficult

The key guide in Patent Document 2 is only a part with different directions, and is a member that changes the guiding position of the front end of the pin through deformation at the root of the guiding pin. position adjustment

In the key guide of Patent Document 3, when adjusting the hole position of the cover relative to the guide piece, it is necessary to prepare various covers with different hole positions, so it is difficult to perform extremely fine adjustments.

In the key guide of Patent Document 3, a gap is formed between the receiving hole of the cover and the guide piece, so that when the position is adjusted in the left-right direction, it needs to be on the inner wall of the receiving hole whose size is limited and the guide piece with a smaller diameter. There are protrusions and a plurality of grooves for locking, so the position holding only by the engagement of the tiny protrusions and grooves may not be sufficiently performed and the adjustment may not be maintained.

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