JPS5939743Y2 - Music stand device for keyboard instruments - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a music stand device for a keyboard instrument.

Conventionally, in this type of device, the lower end of the music stand is rotatably attached to the upper surface of the upper board of a keyboard instrument, and when the music stand is raised, a support member rotatably attached to the music stand is erected, and the lower end of the music stand is There is a known type that locks onto a stopper and maintains the upright position.

According to such conventional music stand devices, when standing up, the lower end of the supporting member must be locked to the stopper after the music stand is erected, which is time-consuming and the stopper is not connected to the top plate of the keyboard instrument. Since it needs to be mounted independently on the top surface, there are drawbacks such as an additional number of parts and man-hours.

Furthermore, since the depth of a keyboard instrument cannot be reduced by combining the distance between the music stick and the lower end of the music stand, the height of the music stand, and the length of the keyboard, technological advances in the internal parts of the keyboard instrument Despite the increased density and miniaturization, it has been difficult to reduce the external dimensions, especially the depth dimensions.

Therefore, the present invention eliminates these drawbacks, eliminates the need for a separately installed stopper, and provides a music stand that makes the depth of the keyboard instrument approximately equal to the sum of the height of the music stand and the length of the keyboard. The lower end 5 of a support member 4 which rotatably supports a music stand 3 at its upper end 2 is pivotally attached to the upper surface 1 of a mud roof of a keyboard instrument, and the lower end front side 6 of the support member 4 is provided. is provided with a stopper part 7 that comes into contact with the upper surface 1 of the upper plate when the music stand 3 is folded down and makes the support member 4 unrotatable, and a stopper part 7 is provided at the lower end 8 of the side surface of the music stand 3 to stop the rear side of the support member 4. A small wheel abutting on the supporting member 4 and the small wheel 1 is provided.
0 to hold the music stand 3 in an upright position.

As shown in the figure, the support member 4 is made of a rod-shaped synthetic resin, and is rounded 11 except for the front side 6 of its lower end.

In addition, a wood screw 13 is inserted loosely into a countersunk hole 12 drilled in the upper end 2 of the support member 4, and a punching felt 14 is further interposed, so that the wood screw 13 is punched between the music stand 3 and the support member 4. Leave a gap wider than the thickness of the felt 14,
It is screwed into the music stand 3 and serves as the rotation shaft 15 of the music stand 3.

On the other hand, a protrusion 20 having a flange 18 at the tip and a groove 19 in the center is provided on the side opposite to the music stand side 16 of the lower end 5 of the support member 4. The bearing fixed to the upper surface 1 of the mud roof of the musical instrument with wood screws or the like is inserted into a through hole 23 having a stepped portion 22 bored in the member 21, and the flange 18 at the tip 17 and the bearing are connected to the stepped portion of the member 20. 22 are engaged with each other, the support member 4 is engaged with the member 20, and the bearing is engaged with the member 20.
It is pivoted to.

A small wheel 10 provided at the lower end 8 of the side surface of the music stand 3 is loosely fitted into a wheel portion 25 in which a through hole 24 having a stepped portion 23 is bored and the stepped portion 23, and a small wheel 10 is installed at the lower end 8 of the side surface of the music stand. It is cut from the shaft portion 27 which is longer than the width of the wheel portion 25 fixed with screws 26 or the like.

In order to bring the music stand 3 of the music stand device into an upright state, it is sufficient to simply rotate the upper part 28 of the music stand 3, which is in the laid down state indicated by the two-dot chain line, in the direction of the arrow A.

The rotation in the direction of arrow A moves the small wheel 10 in the direction of arrow C about the fulcrum B onto the upper surface 1 of the clay roof of the keyboard instrument, and rotates the support member 4 in the direction of arrow E about the fulcrum.

When the small wheel 10 comes into contact with the rear side 9 of the support member 4, the music stand 3 is placed in an upright state due to the contact point 29 between the support member 4 and the small wheel 10 on the upper surface 1 of the clay roof of the keyboard instrument.

At this time, the music stand 3 tends to fall backward due to the moment in the direction of arrow F caused by gravity, but the small wheels 10
comes into contact with the rear side 9 of the support member 4, thereby preventing rotation in the direction of arrow C around the fulcrum B and rotation in the direction of arrow F around the fulcrum, and the music stand 3 is held in an upright state. Ru.

Further, the support member 4 is prevented from excessive rotation in the direction of arrow H towards the front side of the keyboard instrument by the stopper part 7.
The material of the support member 4, the shape of the stopper portion 7 provided on the front side of its lower end, and the shape of the small wheel 10 provided on the lower end 8 of the side surface of the music stand 3 are not limited to those in the embodiment.

In order to lay down the music sheet and the metal plate 3, the operation described above can be reversed.

In this way, according to the present invention, a stopper part 7 is provided on the lower end front side 6 of the support member 4 that rotatably supports the music stand 3, and a stopper part 7 is provided on the lower end 8 of the side surface of the music stand 3 on the rear side 9 of the support member 4. A small wheel 10 is provided in contact with the supporting member 4 and the small wheel 10.
Since the music stand 3 can be held in an upright position, there is no need for a stopper as in the conventional example, and the music stand can be operated smoothly with one touch.

Furthermore, the depth dimension of the keyboard instrument excluding the length of the keyboard can be set to approximately the height of the music stand, so the depth dimension of the keyboard instrument is reduced compared to the conventional example, and the structural materials of the keyboard instrument can be saved. ,
It is possible to provide a keyboard instrument at a low cost, and furthermore, even in consideration of recent housing conditions, there are effects such as being able to effectively utilize a narrow space.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is an exploded view thereof. 1...The top surface of the clay roof of a keyboard instrument, 2...
・Top end of support member, 3...Music stand, 4...
...Supporting member, 5...Lower end of supporting member, 6...
... Lower end front side of support member, 7 ... Stopper part, 8 ... Lower end of side surface of music stand, 9 ... ...
On the rear side of the support member, 10...Small wheels.

Claims (1)

[Scope of utility model registration request] A lower end 5 of a support member 4 that rotatably supports a music stand 3 at its upper end 2 is pivotally attached to the upper surface 1 of the upper board of the keyboard instrument, and the lower end front side 6 of the support member 4 is attached to the lower end 6 of the support member 4 when the music stand 3 is folded down. A stopper part 7 is provided which abuts on the upper surface 1 of the upper plate and makes the support member 4 unrotatable, and a small wheel 10 which abuts on the rear side 9 of the support member 4 is provided at the lower end 8 of the side surface of the music stand 3. A music stand device for a keyboard instrument, wherein the music stand 3 is held in an upright state by the supporting member 4 and the small wheels 10.