JPH0944144A - Keyboard lid opening and closing device of electronic keyboard musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a compact electronic keyboard musical instrument which has a storage part that may be less depth than a keyboard lid and less in height and need not be increased in depth and height for the keyboard lid by folding the keyboard lid, constituted by hinging the top-surface sides and reverse-surface sides of a plurality of plate materials alternately, in the storage part. SOLUTION: The keyboard lid consists of the front lid plate 1a, intermediate lid plate 1b, and rear lid plate 1c having their top-surface sides and reverse- surface sides hinged alternately, and the rear lid plate 1c is guided to a roller 3. While the keyboard lid opening and closing device is fully open, the keyboard lid is pushed to the right, the roller 3 abuts against the right end of a rail 4, and the rear lid plate 1c becomes nearly vertical and then the intermediate lid plate 1b also becomes almost upright, and the front lid plate 1a has its tip put in the recessed part 10b of a guide 10a and becomes almost horizontal. Thus, the front lid plate 1a, intermediate lid plate 1b, and rear lid plate 1c are folded and stored in the storage part 2. Therefore, the electronic keyboard musical instrument increases in neither depth nor height.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard lid opening / closing device for an electronic keyboard instrument that opens and closes a keyboard lid that covers the keyboard of the electronic keyboard instrument.

[0002]

2. Description of the Related Art In order to prevent dust on the keyboard of an electronic musical instrument while the electronic musical instrument is not used, a keyboard lid for covering the keyboard of the electronic musical instrument is sometimes provided. In addition, various techniques of an opening / closing device for accommodating the keyboard lid so as not to get in the way when playing an electronic musical instrument have been proposed (Japanese Utility Model Publication No. Hei 1-19181 and Japanese Utility Model Publication 62-1325).
No. 89).

FIG. 8 is a sectional view of a conventional keyboard lid opening / closing device for a general keyboard instrument disclosed in Japanese Utility Model Publication No. 1-19181. The keyboard lid opening / closing device for this keyboard instrument is a slidable keyboard lid 40 that is slidable in the left-right direction in FIG. 8 and a slantable keyboard lid 40. And 42.

The keyboard lid opening / closing device of the keyboard instrument shown in FIG.
The sliding door type keyboard lid 40 is slid to the right in FIG. 8, the sliding door type keyboard lid 40 is bent downward from the middle thereof, and the keyboard lid 40 is stored in the storage portion 42 (the state shown in FIG. 8). The structure is such that a shutter door type keyboard lid 40 is slid to the left in FIG. 8 to cover the keyboard. FIG.
It is a sectional view showing a part of keyboard lid opening-and-closing device of a keyboard musical instrument indicated by JP 62-132589A.

The keyboard lid opening / closing device of this keyboard instrument has a shaft 47 slidable in the left-right direction in FIG.
A keyboard lid 45 having one side fixed to it is provided with a storage portion 48 in which the keyboard lid 45 is stored. In the keyboard lid opening / closing device of the keyboard instrument shown in FIG. 9, the keyboard lid 45 positioned to the left in FIG. 9 covers the keyboard 46 (the state shown in FIG. 9), and the shaft 47 is slid to the right in FIG. The keyboard lid 45 is stored in the storage portion 48.

[0006]

In the above-mentioned conventional technique, the keyboard lid opening / closing device for a keyboard instrument shown in FIG.
0 is bent downward from the middle and the keyboard lid 40 is attached to the storage section 42.
However, there is a problem in that the height of the keyboard instrument is increased due to the bent portion of the storage section 42. In the case of a keyboard instrument having two keyboards, it is necessary to increase the height of the keyboard instrument or to increase the size of the storage part for storing the keyboard lid 40 horizontally. However, there is a problem that the depth dimension becomes large. In addition, since the portion bent downward of the storage section 42 separates the rear side of the keyboard musical instrument from the inside, wiring is required when an output jack or a connector for connection with other musical instruments is provided on the rear side. Will be a constraint of.
Further, the keyboard lid opening / closing device of the keyboard instrument shown in FIG.
Since the keyboard lid 45 is slid to be housed in the housing portion 48, the housing portion 48 needs to have a length equal to or longer than the keyboard lid 45, and particularly in the case of a keyboard instrument having two keyboards. However, there is a problem that the depth dimension of the keyboard instrument becomes large.

In view of the above circumstances, it is an object of the present invention to provide a keyboard lid opening / closing device for an electronic keyboard instrument having a small depth and height.

[0008]

In order to achieve the above object, a keyboard lid opening / closing device for an electronic keyboard instrument according to the present invention has a plurality of plate members arranged side by side in the front-rear direction, and the upper surface side and the lower surface side of the plate materials are alternately arranged. A keyboard lid that is hinged and that opens and closes by sliding in the front-rear direction, a guide mechanism that guides the plate member at the rearmost end when the keyboard lid opens and closes, and a keyboard lid that opens when the keyboard lid opens. It is characterized in that it is provided with a storage portion for folding and storing.

Here, in the keyboard lid opening / closing device of the present invention, the guide mechanism is attached to a roller attached to a rearmost plate member of the plurality of plate members, and is mounted in a housing of the electronic keyboard instrument. Alternatively, the guide mechanism may include a rail for guiding the roller, or the guide mechanism may include a pinion attached to a rearmost plate member of the plurality of plate members and a housing of the electronic keyboard instrument. It may be provided with a rack that guides the pinion.

Further, in the keyboard lid opening / closing device of the present invention, the lower surface side of the plate material at the foremost end and the lower surface side of the plate material adjacent to the foremost end of the plurality of plate materials are hinged. Preferably there is. A keyboard lid opening / closing device for an electronic keyboard instrument according to the present invention stores a keyboard lid in which a plurality of plate materials are alternately hinged on the upper surface side and the lower surface side, and is guided by a guide mechanism along with the opening operation and folded into a storage portion. Because it is
The depth of the storage section is smaller than the depth of the keyboard lid, and the height dimension of the storage section is also small.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a side sectional view of an embodiment of a keyboard lid opening / closing device for an electronic keyboard instrument of the present invention. This electronic keyboard instrument has a keyboard 6 provided in two steps, a keyboard lid 1 that slides on a guide 10a provided on an inner wall of a side plate 10 to open and close, and a table lid 5 located below the top plate 5, as shown in FIG. A roller 3 that constitutes a guide mechanism according to the present invention, which guides the right end of the keyboard lid 1 to the rail 4, and a storage unit 2 that folds and stores the keyboard lid 1 as the keyboard lid 1 opens. It has been done. The keyboard lid 1 includes a front lid plate 1a, an inner lid plate 1b, and a rear lid plate 1 whose upper and lower surfaces are alternately hinged.
The cover plate 1c is guided by the roller 3. Further, the electronic keyboard instrument is provided with a heat radiating plate 7 below the housing 2 for radiating heat generated from electronic components (not shown) on the board 9, and a jack 8 is provided on the rear surface of the right end in FIG.
Is provided.

FIG. 2 is a side sectional view showing a state in which the keyboard lid opening / closing device of the electronic keyboard instrument shown in FIG.
FIG. 3 is a perspective view showing a part of the state shown in FIG. 2 in a sectional view. In this keyboard lid opening / closing device for an electronic keyboard instrument, when the keyboard lid 1 is pushed rightward in FIG. 2, the rear lid plate 1c is guided by the rollers 3 and moves rightward while inclining upward to the right,
Along with this, the inner lid plate 1b slides on the guide 10a and moves to the right, and the rear lid plate 1c and the inner lid plate 1b are stored in the storage portion 2. In FIG. 2, the front cover plate 1a is in a state in which the front end of the front cover plate 1a slides on the guide 10a above the keyboard 6 and is moved to the right, so that the keyboard cover 1 is partially opened.

FIG. 4 is a side sectional view showing a state in which the keyboard lid opening / closing device of the electronic keyboard instrument shown in FIG. 1 is completely opened.
In FIG. 4, the keyboard lid 1 is pushed further to the right in FIG. 4 from the state shown in FIGS.
Comes into contact with the right end of the rail 4 so that the rear cover plate 1c becomes substantially vertical, and accordingly, the middle cover plate 1b also becomes substantially upright, and the front cover plate 1a has its tip inserted into the recess 10b of the guide 10a and becomes substantially horizontal. Has become. This state is the state where the keyboard lid 1 is completely opened.

As described above, in the keyboard lid opening / closing device for the electronic keyboard instrument of this embodiment, the front lid plate 1a, the middle lid plate 1b, and the rear lid plate 1c constituting the keyboard lid 1 are alternately arranged on the upper surface side and the lower surface side. Since it is hinged, the keyboard lid 1 is folded and stored in the storage portion 2. Generally, an electronic keyboard instrument has a space as large as the storage section 2 shown in FIGS. In the present invention, since this space is used as the storage portion 2, the depth and height of the electronic keyboard instrument are not particularly increased by the keyboard lid 1 having the above structure.

Here, the keyboard lid 1 in this embodiment is used.
The roller 3 is opened and closed by being guided by the rail 4, but the roller 3 and the rail 4 may be replaced by a pinion and a rack. Next, the keyboard structure in this embodiment will be described. FIG. 5 (a)
Is a side view of an example of the keyboard shown in FIGS. 1 to 4, and FIG.
FIG. 6 is an enlarged view of a portion A of FIG.

In the keyboard 6, the lower end 20a at the right end of the key 20 in FIG. 5 is pivotally attached to the frame 22, and the upper end 20c at the right end and the frame 22 are connected by a spring 21 so that the key 20 is biased upward. There is. On the other hand, the lower end 20b of the hook 20e extending from the lower surface of the key 20 abuts on the step surface 23a of the first key abutting member 23 provided on the lower surface of the frame 22 so that the initial position where the key 20 is stationary is held. There is.
While the inner wall of the key 20 slides with the key guide 25, the key 20 is rotated until the contact surface 20d of the hook 20e contacts the second key contact member 22a provided on the upper surface of the frame 22. Further, the keyboard 6 is provided with a drive device 24, and the drive device 24 causes the first key contact member 23 to move.
It is moved in the direction indicated by the arrow in (b). The drive device 24 is provided with a motor (not shown) and the like, and the motor moves the first key contact member 23.

When the keyboard 6 shown in FIG. 5 is depressed, the lower end 2 is contacted until the contact surface 20d contacts the second key contact member 22a.
The key 20 rotates about 0a, but the amount of this rotation (stroke) varies depending on the selected timbre, the music played, and the like. Therefore, it is preferable that the stroke is variable rather than fixed.

The key 20 of the keyboard 6 shown in FIG.
Since the first key contact member 23 can be moved by means of 4, the initial position where the key 20 is stationary is determined by the position of the step surface 23a of the first key contact member 23 with which the lower end 20b contacts. It can be controlled and the stroke can be changed. The lower end 20b of the hook 20e abuts here not to control the initial position stepwise like the staircase surface 23a, but to control the initial position steplessly like a flat inclined surface. Of course, it is okay.

FIG. 6A is a side view of another example of the keyboard shown in FIGS. 1 to 4, and FIG. 6B is an enlarged view of portion B of FIG. 6A. The same elements as those shown in FIG. 5 are designated by the same reference numerals, and the duplicate description will be omitted. In the keyboard 6 shown in FIG. 6, the lower end 20b of the hook 20e abuts the first key abutting member 27 provided on the lower surface of the frame 22, and the initial position in which the key 20 is stationary is held. . The first key contact member 27 is screwed and held by a first screw member 26 a of a first drive device 26 provided on the lower surface of the frame 22. A second drive device 28 is provided on the upper surface of the frame 22, and a second key contact member in which the contact surface 20d of the hook 20e contacts the second screw member 28a of the second drive device 28. 29 are held. Each of the first drive device 26 and the second drive device 28 is provided with a motor and the like (not shown), and the motor and the like rotate the first screw member 26a and the second screw member 28a, respectively. This first screw member 26
By rotating the a and the second screw member 28a, the first key abutting member 27 and the second key abutting member 29 are respectively moved as shown in FIG.
Move in the direction of the arrow shown in.

The key 20 of the keyboard 6 shown in FIG. 6 has a lower end 20b.
Since the position of the first key contact member 27 with which the key 20 abuts can be controlled by rotating the first screw member 26a of the first drive device 26, the initial position when the key 20 is stationary is thereby achieved. The position can be controlled to change the stroke. Further, in the key 20 of the keyboard 6, the position of the second key contact member 29 with which the contact surface 20d abuts is changed to the second drive device 28.
Since the second screw member 28a can be controlled by rotating the second screw member 28a, it is possible to change the stroke until the key 20 is pushed down and abuts on the key abutting member 29.

FIG. 7 (a) is a side view of still another example of the keyboard shown in FIGS. 1 to 4, FIG. 7 (b) is an enlarged view of portion C of FIG. 7 (a), and FIG. 7B is a diagram showing a state in which the drive device has moved from the state shown in FIG. 7B. The same elements as those shown in FIGS. 5 and 6 are designated by the same reference numerals, and a duplicate description will be omitted. In the keyboard 6 shown in FIG. 7, the lower end 20b of the hook 20e abuts on the first key abutting member 31 provided on the lower surface of the frame 22, and the initial position in which the key 20 is stationary is held. . The left end of the first key contact member 31 is rotatably attached to the frame 22 in FIG. 7, and the right end of the first key contact member 31 is held by the first drive device 30 via the first hinge 30a. A second driving device 32 is provided on the upper surface of the frame 22. The second drive device 32 holds the right end in FIG. 7 of the second key contact member 33 with which the lower end 20d of the key 20e abuts via the second hinge 32a. The left end of the second key contact member 33 in FIG. 7 is pivotally attached to the frame 22. Each of the first drive device 30 and the second drive device 32 is provided with a motor or the like (not shown),
This motor or the like causes the motor to move in the direction of the arrow shown in FIG. By driving the first driving device 30, the first key contact member 31 on the left side in FIG.
Is rotated in the direction of the arrow shown in FIG. Also the second
By driving the driving device 32 of FIG. 7, the second key contact member 33 on the left side in FIG.
It is rotated in the direction of the arrow shown in.

The key 20 of the keyboard 6 shown in FIG. 7 has a lower end 20b.
Since the position of the first key contact member 31 with which the key abuts can be controlled by driving the first driving device 30, the stroke is controlled by controlling the initial position where the key 20 is stationary. Can be changed. The key 20 of the keyboard 6 has a second key contact member 33 with which the contact surface 20d contacts.
Since the position of can be controlled by driving the second drive device 32, it is possible to change the stroke by controlling the depressed position where the key 20 is depressed and depressed.

[0023]

As described above, in the keyboard lid opening / closing device for an electronic keyboard instrument of the present invention, the keyboard lid in which the upper surface side and the lower surface side of a plurality of plate materials are alternately hinged is folded and stored in the storage portion. Since the depth of the storage section is smaller than the depth of the keyboard lid and the height dimension of the storage section is also small, it is not necessary to increase the depth dimension and height dimension of the electronic keyboard instrument because of the keyboard lid. . For this reason, it becomes a compact electronic keyboard instrument having a keyboard lid.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of a keyboard lid opening / closing device for an electronic keyboard instrument of the present invention.

FIG. 2 is a side sectional view showing a state in which the keyboard lid opening / closing device of the electronic keyboard instrument shown in FIG. 1 is opened halfway.

FIG. 3 is a perspective view showing a part of the state shown in FIG. 2 in a sectional view.

FIG. 4 is a side sectional view showing a state in which the keyboard lid opening / closing device of the electronic keyboard instrument shown in FIG. 1 is completely opened.

FIG. 5 is a side view (a) of an example of the keyboard shown in FIGS.
It is an enlarged view of the A part of (a) (b).

FIG. 6 is a side view (a) of another example of the keyboard shown in FIGS. 1 to 4, and an enlarged view (b) of a portion B of (a).

7 is a side view (a) of still another example of the keyboard shown in FIGS. 1 to 4, an enlarged view of a portion C of (a), (b), a state where the drive device is moved from the state of (b); FIG. It is a figure (c) shown.

FIG. 8 is a cross-sectional view of a keyboard lid opening / closing device for a conventional general keyboard instrument described in Japanese Utility Model Publication No. 1-19181.

FIG. 9 is a sectional view showing a part of a keyboard lid opening / closing device of a keyboard instrument described in Japanese Utility Model Laid-Open No. 62-132589.

[Explanation of symbols]

 1 keyboard lid 1a front lid plate 1b middle lid plate 1c rear lid plate 2 storage part 3 roller 4 rail 5 top plate 6 keyboard 7 heat sink 8 jack 9 base 10 side plate 10a guide 10b recess

Claims (4)

[Claims] 1. A keyboard lid that is opened and closed by sliding in the front-back direction, in which a plurality of plate materials are arranged in the front-rear direction and adjacent plate materials are alternately hinged on the upper surface side and the lower surface side, and the opening / closing operation of the keyboard lid. A lid mechanism for guiding the plate member at the rearmost end, and a storage portion for folding and storing the keyboard lid when the keyboard lid is opened. apparatus. 2. The guide mechanism comprises a roller attached to the rearmost plate member of the plurality of plate members, and a rail installed in the housing of the electronic keyboard instrument for guiding the roller. The keyboard lid opening / closing device for an electronic keyboard musical instrument according to claim 1, wherein 3. The guide mechanism comprises: a pinion attached to the rearmost plate member of the plurality of plate members; and a rack installed in the housing of the electronic keyboard instrument for guiding the pinion. The keyboard lid opening / closing device for an electronic keyboard musical instrument according to claim 1, wherein 4. The lower plate side of the plate member at the foremost end and the lower plate side of the plate member adjacent to the foremost end of the plurality of plate members are hinged to each other. 3. A keyboard lid opening / closing device for an electronic keyboard musical instrument according to any one of 3 above.