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Cover opening & closing device for keyboard instrument

A keyboard musical instrument and cover switch technology, which is applied to stringed instruments, wind instruments, electro-acoustic musical instruments, etc., and can solve the problem that the keyboard cover 10 cannot slide smoothly

Inactive Publication Date: 2009-07-01
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the keyboard cover 10 slides, as Figure 9 As shown, there is a problem that the lower surface of the keyboard cover 10 is in contact with the front end portion P of the rack member 12, causing the keyboard cover 10 and the rack member 12 to interfere with each other, and thus the keyboard cover 10 cannot slide smoothly.
[0009] Such a problem is caused by the fact that the keyboard cover 10 is received in a slightly inclined state lifted forward on the underside of the upper plate 6 of the instrument body 1. When the keyboard cover 10 is pulled out from this state, the keyboard The part 7 slides along the guide surface 14a of the guide member 14 and gradually descends forward, so once the rack member 12 protrudes out of the instrument body 1 and is located on the lower side of the slide track of the keyboard cover 10, as shown in FIG. Figure 9 As shown, when the keyboard cover 10 slides, the lower side of the keyboard cover 10 is likely to rub against the front end portion P of the rack member 12 on the way.

Method used

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  • Cover opening & closing device for keyboard instrument
  • Cover opening & closing device for keyboard instrument
  • Cover opening & closing device for keyboard instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Below, refer to Figure 1 ~ Figure 4 Embodiment 1 of the keyboard musical instrument of the present invention will be described. In addition, in the same Figure 7 ~ Figure 9 The same parts in the conventional examples shown are described with the same symbols.

[0031] The keyboard instrument, such as figure 2 As shown, a rack member 12 is embedded in a pair of side plates 5 of the instrument body 1 to engage with and rotate the pinion 11 of the keyboard cover 10 . That is, if image 3As shown, on the inner surface of the rear portion of the side plate 5, a fitting recess 20 for embedding the rack member 12 is provided along the front-rear direction, and the pinion 11 protrudes from the left and right sides of the rear portion of the keyboard cover 10 ( figure 1 The keyboard cover 10 is mounted on the keyboard cover 10 by the mounting shaft 11a in the state of the outer side of the page (cover direction).

[0032] Therefore, in the middle part of the fitting rece...

Embodiment 2

[0042] Below, refer to Figure 5 , Embodiment 2 of the lid opening and closing device of the keyboard musical instrument of the present invention will be described. And, with Figure 1 ~ Figure 4 The parts that are the same as in Example 1 shown are described with the same symbols.

[0043] The lid opening and closing device of this keyboard musical instrument has a structure in which the rack member 12 and the guide member 14 are integrally formed. That is, the front end of the rack member 12 and the rear end of the guide member 14 overlap each other, that is, the guide member 14 is shifted only toward the inner side of the side plate 5 from the fitting recess of the side plate 5 where the rack member 12 is fitted. 20-depth state overall molding. Therefore, when the rack member 12 is fitted into the fitting recess 20 of the side plate 5 , the guide member 14 is closely attached to the inner surface of the side plate 5 . In addition, at this time, the rack member 12 is pre...

Embodiment 3

[0046] Below, refer to Image 6 , Embodiment 3 of the lid opening and closing device of the keyboard musical instrument of the present invention will be described. And, with Figure 1 ~ Figure 4 The parts that are the same as in Example 1 shown are described with the same symbols.

[0047] The cover opening and closing device of this keyboard musical instrument has a structure in which a stopper 30 capable of locking and releasing the roller 13 of the keyboard cover 10 is provided on the third position regulating part 23 of the guide member 14 . That is, the stopper 30, such as Image 6 As shown, the front part of the third position limiting part 23 is formed in an overhang shape that inserts the roller 13 from the rear (the right side of the figure), so that the inserted roller 13 is stopped and prevented from moving forward (the right side of the figure). left) and structures moving upwards.

[0048] According to the cover opening and closing device of such a keyboard mu...

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PUM

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Abstract

A cover switch device for a keyboard musical instrument, comprising a keyboard part (7) covering between side plates (5) of a musical instrument body (1) and an operating part (8) on the rear upper side of the keyboard part (7). The keyboard cover (10), the guide member (14) that guides the roller (13) on the keyboard cover is arranged on the inner surface of the side plate (5), meshed with the pinion (11) installed at the rear of the keyboard cover A rack member (12) for rotating it is embedded in the side plate (5). Therefore, since the roller (13) is guided by the guide member (14) and the pinion (11) engages with the rack member (12) and rotates when the keyboard cover is slid, in addition to the smooth sliding of the keyboard cover, especially because The rack part is buried inside the side plate, so the rack part is not located at the lower side of the sliding track of the keyboard cover, so the keyboard cover and the rack part do not interfere with each other, so the keyboard cover can be slid smoothly.

Description

technical field [0001] The invention relates to a cover switch device for keyboard musical instruments such as electronic pianos Background technique [0002] In the past, on keyboard instruments such as electronic pianos, there is a keyboard cover that can be flexibly opened and closed to cover the keyboard part where the white keys and black keys are arranged. The keyboard cover pulls out to cover the top of the keyboard section to protect it. [0003] Figure 7 ~ Figure 9 is an example of it. This keyboard instrument has a musical instrument body 1 . The musical instrument body 1, such as Figure 7 As shown, the base plate 2, the front plate 3 provided at the front end of the base plate 2 (the left end of the figure), the rear plate 4 located at the rear end of the base plate 2 (the right end of the figure), and the base plate 2 A pair of side plates 5 on the left and right sides (inner and outer sides of the drawing) and an upper plate 6 provided on the rear side of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10C3/00G10B3/00G10H1/00G10C3/02G10H1/32
Inventor 永妻成之
Owner CASIO COMPUTER CO LTD