JP2000276130A - Fallboard device of keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to reduce the thickness and size of a keyboard instrument, to smoothly open and close fallboards and to improve operability by providing the device with a front fallboard and a rear fallboard which slides backward on a musical instrument body cooperatively with backward turning of supporting members and opens the rear part of a playing section. SOLUTION: The front fallboard 11 opens the front part of the playing section 9 by turning backward together with the supporting arms 10. Simultaneously therewith, the rear fallboard 12 slides backward on an operation panel 4 and a rear surface panel 5 by accompanying turning of the front fallboard 11 and opens the rear part of the playing section 9. The playing section 9 is opened by the turning of the front fallboard 11 and the sliding of the rear fallboard 12 in the manner described above and, therefore, the need for a space for stowage of the front and rear fallboards 11 and 12 in an organ body 3 is eliminated. As a result, the depth of the electronic organ is reduced and the thickness thereof is reduced. In addition, the smooth opening and closing of the front and rear fallboards 11 and 12 is made possible and the operability may be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard cover device for a keyboard instrument which opens and closes a playing section such as an electronic organ.

[0002]

2. Description of the Related Art Conventionally, a keyboard cover of such a keyboard instrument as shown in FIG. 9 is known. As shown in the figure,
The keyboard cover device 70 is applied to an electronic organ 71 having two steps of front and rear (left and right directions in the figure) keys 72, 72, and has a bellows-type keyboard cover 73. This keyboard cover 7
Reference numeral 3 denotes a plate-like eight lid members 73a extending in the left-right direction (depth direction in the figure) connected to the front and rear.
The playing section 74 including 72 is opened and closed. Guide rails 75, 75 for guiding sliding of the keyboard cover 73 are provided on the left and right inner surfaces of the case 71a of the electronic organ 71 (only one is shown). Extends upward from the front end, further extends obliquely upward, and the rear end is curved so as to be horizontal, curved downward, and further extended downward.

[0003] Also, on the left and right inner surfaces of the case 71a,
Left and right storage portions 77, 77 for storing the keyboard cover 73 are provided, respectively (only one is shown). Each storage unit 7
Reference numeral 7 denotes a rear half of the guide rail 75 and a guide rail 76 that curves downward and extends further downward. When using the electronic organ 71,
When the keyboard cover 73 is pushed backward, the keyboard cover 73 is guided by the guide rails 75 and 76 and moves rearward, moves further downward and is stored in the storage unit 77. Thereby, the performance unit 7
4 is released. On the contrary, when the electronic organ 71 is not used, the keyboard cover 73 is pulled out to the front, and the playing section 74 is closed.

[0004]

In recent years, keyboard instruments have been required to be thinner and smaller from the viewpoint of securing installation space due to domestic housing conditions. However, according to the conventional keyboard cover device 70, a storage space such as the storage unit 77 needs to be provided in the electronic organ 71 in order to store the bellows-type keyboard cover 73. The depth of the case 71a becomes large, and the electronic organ 71 becomes large accordingly. Further, when the keyboard cover 73 is opened and closed, the keyboard cover 73 is guided by the curved guide rails 75 and 76 in the case 71a, and is opened and closed by the push / pull operation of the keyboard cover 73. The keyboard cover 73 can be easily tilted from the posture.
May be caught between the guide rails 75 and 76 or on the case 71a. For this reason, the keyboard cover 73 cannot be opened and closed smoothly, which is not convenient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a keyboard cover of a keyboard musical instrument capable of reducing the thickness and size of the keyboard musical instrument, opening and closing smoothly, and improving usability. It is intended to provide a device.

[0006]

The invention according to claim 1 is
A keyboard lid device for a keyboard musical instrument for opening and closing a playing section including a keyboard of a musical instrument main body, comprising: a support member rotatably attached to the musical instrument main body; The front keyboard cover opens the front part of the playing section by rotating backward in conjunction with the rotation of the keyboard, and the rear end of the front keyboard cover is slidably mounted in the front-rear direction on the instrument body. And a rear cover that opens rearward of the playing section by sliding backward on the instrument body in conjunction with the rearward rotation of the support member. Features.

[0007] According to the keyboard cover device of the keyboard instrument, the front cover is rotated rearward in conjunction with the rearward rotation of the support member, thereby opening the front portion of the playing section, and the rear keyboard cover. Slides backward on the instrument body to open the rear part of the playing section. As described above, since the playing portion is opened by the rotation of the front cover and the sliding of the rear cover on the instrument body, unlike the conventional cover device, the keyboard cover is stored in the instrument body. Space is not required. Thereby, the depth of the keyboard instrument can be reduced, and the keyboard instrument can be made thinner and smaller.
For the same reason, unlike the conventional case where the keyboard cover is stored between the two guide rails, the front and rear keyboard covers can be opened and closed smoothly, and the usability can be improved. Furthermore, since the keyboard cover is divided into two parts, the rotating space of the front cover when opening and closing the playing part can be reduced even if the playing part has a relatively long front and rear length.

In the above, it is preferable that at least one of the front and rear keyboard covers is provided with a lid stopper for restricting a rotation angle of the rear keyboard cover with respect to the front keyboard cover to a predetermined angle.

According to the keyboard cover device of this keyboard instrument, the rotation angle of the rear cover with respect to the front cover is regulated to a predetermined angle by the cover stopper. Therefore, the rear cover is not greatly opened beyond a predetermined angle. Also, if the predetermined angle is set to such an angle that the rear cover is opened only when the rear cover is opened from the state in which the front and rear cover closes the playing section, and then released, the rear cover is closed by its own weight. The function of protecting the playing part can be ensured by preventing the opening of the playing part.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A keyboard cover device for a keyboard instrument according to a first embodiment of the present invention will be described. FIG. 1 and FIG. 2 show an electronic organ 2 as a keyboard instrument to which the keyboard cover device 1 of the present embodiment is applied. The electronic organ 2 includes an organ body 3 as a musical instrument body, and a keyboard cover device 1 attached to the organ body 3 for opening and closing the playing section 9. The organ body 3 is manufactured by assembling a steel material, a synthetic resin plate, or the like, and includes an operation panel 4 and a rear panel 5 on the rear side thereof, and a brace 6 extending in the front-rear direction outside these panels.
6 (only one is shown).

The operation panel 4 extends forward from the front end of the rear panel 5 diagonally forward and downward, and further extends diagonally forward and diagonally downward from the left and right front ends with a predetermined width. Are 4a and 4a. Front and rear two-stage keys 7, 7 are arranged between the left and right clap parts 4a, 4a.
Are arranged so as to extend in the left-right direction. The operation panel 4 is provided with a large number of switches 8. By operating these switches 8, the timbre of the sound generated from the sound device in the organ body 3 when the keyboard 7 is pressed is pressed. Etc. are adjusted. Performance section 9
Is composed of the keyboard 7 and the switch 8. The rear panel 5 extends obliquely rearward and downward continuously from the rear end of the operation panel 4, has a step in the middle thereof, and further extends obliquely rearward and downward.

As shown in FIGS. 1 to 3, the keyboard cover device 1
Are left and right support arms 10 and 10 as support members rotatably attached to the organ body 3, a front cover 11 attached to the front ends of these support arms 10 and 10, and a front cover 11 And a rear cover 12 connected to a rear end of the rear cover 11. As shown in FIG. 2, the front and rear keyboard lids 11 and 12 extend obliquely forward and downward in a straight line with each other when the playing section 9 is closed, and are placed on the organ body 3 in that state. .

Each support arm 10 is arranged along the inner surface of the arm brace 6, and its rear end is connected to a rotating shaft 13 (see FIG. 1). The rotating shaft 13 is supported by a bearing 13a provided on a beam in the organ body 3 via a damper mechanism (not shown). The rotating shaft 13 is supported by the bearing 13a so as to be rotatable around a rotating axis along the left-right direction, and is decelerated by the damper mechanism during the rotation.
Further, an inwardly protruding arm stopper 14 is provided on the inner surface of each arm bar 6, and when the support arm 10 rotates rearward, the support arm 10 comes into contact with the arm stopper 14 from above, so that FIG. And at the open position indicated by the solid line in FIG. With the above configuration, the support arm 10
Is rotatable between a closed position indicated by a two-dot chain line in FIG. 5 and an open position indicated by a solid line.

Further, as shown in FIG.
Of the front cover 11 via a connection adapter 15
Is attached, and the connection adapter 15 is attached to the hinge 1.
The front and rear symmetrical connecting portions 16 and 16 which are rotatably connected to each other via 7 are provided. Each connecting portion 16 includes three upper, middle, and lower walls 16a, 16b, 16 extending in parallel with each other.
It is made of an extruded aluminum material having a cross section “Y” and having a “c” shape. A music receiver 16d is foldably attached to the lower surface of the lower wall 16c of the front connecting portion 16. The musical score receiver 16d has a tip bent at a right angle, and is used in a state of being raised substantially at a right angle from the lower surface of the lower wall 16c, and is folded along the lower wall 16c when not in use.

On the other hand, the front cover 11 is composed of left and right arms 6,6.
It is composed of an acrylic plate having a width substantially equal to the size between the two and a predetermined depth, and a rear end portion thereof is inserted between the upper wall 16a and the middle wall 16b of the front connection portion of the connection adapter 15, and It is fixed to. At the front left and right corners of the back surface of the front cover 11, cushions 11a, 11a are attached (only one is shown). Each cushion 11a,
The front cover 1 is made of an elastically deformable synthetic resin.
In a state in which the playing section 9 is closed, the upper section 1 comes into contact with the upper surface of the clasp 4a from above. Also, the cushion 11a
When the front cover 11 closes the playing section 9, the clasp 4a
And absorbs the impact by being elastically deformed by contacting the surface.

The rear cover 12 is provided with the front cover 11.
As shown in FIG. 2, it has a predetermined depth such that it does not protrude from the organ body 3 when the playing section 9 is opened. Further, the rear keyboard cover 12 includes an upper plate 12a and a slide plate 12b attached to the back surface of the upper plate 12a. Upper plate 12a
Is made of acrylic resin, and its front end is inserted between the upper wall 16a and the middle wall 16b of the rear connecting portion 16 of the connecting adapter 15, and is fixed thereto. The slide plate 12b is made of urethane, and a fluororesin tape (not shown) is attached to a lower surface thereof. As shown in FIG. 5, when the rear keyboard lid 12 slides on the operation panel 4 and the rear panel 5, the fluororesin tape contacts the panels 4 and 5, so that the rear keyboard lid 12 Sliding smoothly.

The opening and closing operations of the keyboard cover device 1 according to the present embodiment configured as described above will be described. Electronic organ 2
Is not used, the keyboard lid device 1 is in a closed state as shown in FIGS. 2 and 3, in which the support arm 10 is in the closed position and the front and rear keyboard lids 11 and 12 are closed.
Extend diagonally forward in a straight line with each other,
The front and rear portions of the playing section 9 are closed.

As shown in FIG. 5, when the front cover 11 in the closed state is lifted upward to use the electronic organ 2, the front cover 11 rotates together with the support arm 10 upward. In conjunction with this, the rear keyboard lid 12 slides rearward on the operation panel 4. Further, when the support arm 10 rotates backward, the rear keyboard cover 12 rides over the upper end of the operation panel 4 and slides downward on the rear panel 5. Thereafter, when the support arm 10 rotates to the open position indicated by the solid line in FIG. 5, the support arm 10 is stopped at the open position by the arm stopper 14 (see FIG. 4). At this time, the support arm 10 is gradually stopped by the arm stopper 14 by being decelerated by the damper mechanism of the bearing 13a. Further, the front cover 11 is held in an obliquely rearward up state, and the rear end of the rear cover 12 abuts on the rear panel 5 and is in a diagonally rearward down state. At this time, as shown in FIG. 4, the front cover 11 and the music receiver 16d constitute a music stand. Thus, the playing section 9 is opened, and the electronic organ 2 can be played.

Conversely, when the front cover 11 in the open state is tilted forward, the front cover 11 rotates forward with the support arm 10. In conjunction with this, the rear cover 12
Slides forward over the upper end of the back panel 5 so as to get over it. Thereafter, when the support arm 10 is rotated to the closed position shown by the solid line in FIG. 3, the front keyboard lid 11 is moved forward with the cushion 11a at the front end thereof in contact with the clasp 4a. To close. At this time, the front keyboard cover 11 is decelerated by the damper mechanism, gently pivots, and closes. At the same time, the rear cover 12 is
Close the rear. Thus, the performance section 9 is closed.

As described in detail above, according to the keyboard cover device 1 of the present embodiment, the front cover 11 opens the front portion of the playing section 9 by rotating backward with the support arm 10. At the same time, with the rotation of the front cover 11, the rear cover 12 slides rearward on the operation panel 4 and the rear panel 5 to open the rear portion of the playing section 9. As described above, since the playing section 9 is opened by the rotation of the front cover 11 and the sliding of the rear cover 12, the organ body 3 differs from the conventional one.
There is no need for a space for storing the front and rear keyboard covers 11 and 12 therein. Thus, the depth of the electronic organ 2 can be reduced, and the electronic organ 2 can be made thinner and smaller. Also,
For the same reason, unlike the conventional case where the keyboard lid is stored between the two guide rails, the front and rear keyboard lids 11 and 12 can be smoothly opened and closed, and the usability can be improved. Further, the front and rear keyboard covers 11, 1
2, the front cover 1 when opening the playing section 9 even when the playing section 9 has a relatively long front-back length.
One rotation space can be reduced.

Next, a keyboard cover device for a keyboard instrument according to a second embodiment of the present invention will be described. As shown in FIG.
The keyboard cover device 1 of the present embodiment is different from the keyboard cover device 1 of the first embodiment only in that a pair of front and rear cover stoppers 20, 20 are provided on front and rear keyboard covers 11, 12, respectively. Others are configured similarly. The front and rear lid stoppers 20 and 20 are formed integrally with the front and rear connecting portions 16 and 16 by aluminum extrusion, respectively.
Are arranged in a pair on the front and rear surfaces of the connecting portions 16, 16, respectively, and are provided with the same line-symmetric cross-sectional shape so as to face each other with the hinge 17 therebetween. Although not shown, the lid stopper 20 extends in the left-right direction (the depth direction in the figure). More specifically, the front lid stopper 20 protrudes to the front side so as to be curved from the rear end of the front connecting portion 16, and its front end is bent almost perpendicularly to the hinge 17 side.

As shown in FIG. 6, the front and rear keyboard covers 11, 1
In a state in which each of the musical instruments 2 closes the playing section 9, the front and rear lid stoppers 20, 20 face each other at a predetermined interval.
When the rear cover 12 is turned forward by hand from this state,
As shown by the two-dot chain line in the figure, the rear cover 12 is stopped by the rear cover stopper 20 contacting the front cover stopper 20 at the position where the rear cover 12 has rotated by a predetermined angle. The predetermined angle is set such that the rear cover 12 is tilted rearward of the vertical line after the stopped state,
Therefore, when the player releases his / her hand, the rear keyboard lid 12 rotates downward by its own weight, thereby closing the playing section 9.

Further, as shown in FIG.
0 rotates from the closed position to the open position and is stopped by the arm stopper 14, the rear keyboard lid 12 becomes the front keyboard lid 11.
Is smaller than the above predetermined angle, and the rear end thereof abuts the rear panel 5. From this state, even if it is attempted to rotate the rear keyboard lid 12 upward, the rear lid stopper 21
Is immediately in contact with the front lid stopper 20, whereby the rear keyboard lid 12 is prevented from turning upward, and is held in a diagonally rearward downward state as shown in the figure.

As described above, the keyboard cover device 1 of the present embodiment
According to this, the front and rear keyboard covers 11 and 12 are
Is closed, even if the rear cover 12 is rotated forward, the rear cover 12 is stopped at a predetermined angle and rotated position by the rear cover stopper 20 abutting against the front cover stopper 21. You. After this restraint state, the keyboard cover 12 is tilted backward from the vertical line, and when released, the keyboard lid 12 rotates downward by its own weight from that position and closes the playing section 9. Therefore, it is possible to prevent the rear cover 12 from being left open, and the performance unit 9
Function can be secured.

Next, a keyboard cover device for a keyboard instrument according to a third embodiment of the present invention will be described. As shown in FIG.
The keyboard cover device 1 of the present embodiment differs from the keyboard cover device 1 of the second embodiment only in that a lid stopper 30 is provided on the rear keyboard cover 12 instead of the front and rear lid stoppers 20, 20. Otherwise, the others are similarly configured. Although not shown, the lid stopper 30 is provided at the left end (or right end) of the back surface of the rear keyboard lid 12, and includes a stopper body 31 formed by bending a steel plate and a cushion 32 attached to the tip of the stopper 31. It is composed of The stopper main body 31 is screwed to the lower wall 16c of the rear connecting portion 16, and its tip portion extends obliquely downward from the back surface of the lower wall 16c and further extends parallel to the rear keyboard cover 12. Also,
The cushion 32 is made of synthetic rubber.

Further, as shown in FIG. 8A, when the front and rear keyboard lids 11 and 12 respectively close the playing section 9, the lid stopper 30 keeps a predetermined distance from the operation panel 4. I have. When the rear cover 12 is rotated forward by hand from this state, as shown by a solid line in FIG.
Is turned by a predetermined angle, the rear stopper 12 abuts on the operation panel 4 to stop the rear keyboard cover 12. The predetermined angle is set so that the rear cover 12 tilts backward from the vertical line in the restrained state, as described above. Therefore, when the hand is released, the rear cover 12 loses its own weight. , The playing section 9 is closed.

As described above, the keyboard cover device 1 of the present embodiment
Also, in the same manner as in the keyboard cover device 1 of the second embodiment, the rear cover 12 can be prevented from being kept open,
The function of protecting the playing section 9 can be secured.

In each of the above-described embodiments, an example in which the keyboard cover device of the present invention is applied to the electronic organ 2 has been described. However, the object to which the keyboard cover device is applied is not limited to this. Organ, etc., or any keyboard instrument. The front and rear lid stoppers 2
Although 0 and 20 are provided on the front and rear keyboard lids 11 and 12, respectively, and the lid stopper 30 is provided on the rear keyboard lid 12,
The lid stopper may be provided on the front cover 11, and when the front and rear cover 11, 12 are closed, the front cover 11 is closed.
Any shape can be used as long as it can restrict the rotation of the rear cover 12 to the predetermined angle described above.

[0029]

As described above, according to the keyboard cover device of the keyboard instrument of the present invention, the keyboard instrument can be made thinner and smaller, and can be smoothly opened and closed. Further, usability can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a keyboard instrument provided with a keyboard cover device according to a first embodiment of the present invention, in which a right portion and a part thereof are cut away.

FIG. 2 is a side sectional view of the keyboard instrument of FIG. 1;

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a view showing a state in which the front and rear keyboard covers of FIG. 3 are opened.

FIG. 5 is an explanatory view showing an opening operation of the keyboard cover device.

FIG. 6 is an enlarged side sectional view of a main part of a keyboard cover device according to a second embodiment of the present invention.

FIG. 7 is a view showing a state in which front and rear lids in FIG. 6 are opened.

FIG. 8A is an enlarged side sectional view of a main part of a keyboard cover device according to a third embodiment of the present invention, and FIG. 8B is a bottom view of a cover stopper.

FIG. 9 is a side sectional view showing a keyboard cover device of a conventional keyboard instrument.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 keyboard cover device 2 electronic organ (keyboard instrument) 3 organ body (instrument body) 7 keyboard 9 playing section 10 support arm (support member) 11 front keyboard cover 12 rear keyboard cover 20 front cover stopper 21 rear cover stopper 30 cover stopper

Claims (2)

[Claims] 1. A keyboard cover device for a keyboard musical instrument for opening and closing a playing section including a keyboard of a musical instrument main body, comprising: a support member rotatably attached to the musical instrument main body; A front keyboard cover that opens the front part of the playing section by rotating backward in conjunction with the backward rotation of the support member, and is slidably mounted on the musical instrument main body in the front-rear direction. A rear end of the playing section, which is rotatably connected to a rear end of the front cover and slides rearward on the musical instrument body in conjunction with rearward rotation of the support member. And a rear cover for opening the rear cover. 2. At least one of the front and rear keyboard covers,
2. A keyboard cover device for a keyboard instrument according to claim 1, further comprising a cover stopper for restricting a rotation angle of said rear cover with respect to said front cover to a predetermined angle.