JPH09319359A - Keyboard instrument - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a keyboard instrument in which a mouthpiece can be easily removed from a shelf plate in a grand piano or the like, and the keyboard and actions can be efficiently adjusted. SOLUTION: A rear surface 2b of a mouthpiece 2 is provided with a dowel 2a perpendicular to the surface thereof, while a side plate 1 of a grand piano is provided.
An insertion hole 3a into which the dowel 2a of the mouth bar 2 is inserted is provided in the front surface 3b of the shelf plate 3 arranged in the lower part of the. Also,
In the insertion hole 3a, there is provided a receiving metal fitting 4 that holds the dowel 2a when the dowel 2a is inserted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard musical instrument such as a grand piano, an upright piano and an electronic piano, and more particularly to a structure for mounting a mouth bar on a shelf plate thereof.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing a mouthpiece mounting portion of a shelf board in a conventional keyboard instrument such as a grand piano. As shown in FIG. 3, conventionally, the lower surface of the keyboard is hidden from the player's side at the upper end of the shelf 13 on which a keyboard (neither is shown) or the like is placed via a reed. The mouth bar 12 is attached to adjust the aesthetic appearance of the keyboard and to contact the keyboard lid (not shown) to cover the keyboard. A plurality of dowels 12a are provided on the lower surface of the mouth bar 12 in the longitudinal direction, and a time signature 14b that engages with the time signature 14 is attached to the back surface. As shown in FIG. 3, the dowel 12a is fitted into a dowel insertion hole 13a provided at the upper end of the shelf plate 13, and the time signature 12b is a spigot engaging member formed at the end of the time signature 14. It is engaged with the stopper 14a. In this way, the mouthpiece 12 becomes the shelf board 13.
Attached to the top edge of the.

FIG. 4 is a sectional view showing a mouthpiece mounting portion of a shelf board in another conventional keyboard instrument, for example, an upright piano. As shown in FIG. 4, a tree 22a with a mouth stick is attached to the rear surface of the mouth stick 22, while the shelf board 2
A mouthpiece engaging portion 23a is formed at the upper end portion of 3. The back of the mouth stick 22 is the front surface 2 of the shelf board 23.
3b, and the tree 22a with a mouthpiece engages with the engaging portion 23a of the shelf board 23 and is fixed by the wood screw 21 to be attached to the front surface 23b of the shelf board 23.

A reed 24 is arranged on the upper surfaces of the shelf plate 23 and the tree 22a with a stick, and a plurality of keyboards 25 consisting of white keys and black keys are arranged above the reed 24. There is. A front pin 26 is attached to an upper end portion of the reed 24 in order to prevent the keyboard 25 from swinging in the width direction.

[0005]

However, the above-mentioned conventional mouthpiece mounting portion of the shelf in the keyboard instrument has the following problems when adjusting the keyboard and actions. That is, in the case of a grand piano, in order to adjust the keyboard and actions, it is usually necessary to remove the mouth stick from the shelf board in order to pull them out forward together with the reed, but the mouth stick mounting portion is shown in FIG. Since it has such a structure, it is necessary to first remove the time signature 14 from the upper surface of the shelf plate 13 before removing the mouthpiece 12 from the shelf plate 13. Further, as shown in FIG.
When it is attached to the end portion of the upper surface of the above, the front surface 13b of the shelf plate 13 is exposed, which is not aesthetically preferable. Therefore, in such a case, it is necessary to attach a decorative veneer (not shown) to the front surface 13b of the shelf board 13 and apply coating.

On the other hand, in the case of an upright piano, since the mouth stick mounting portion has a structure as shown in FIG. 4, in order to remove the mouth stick 22, first, the shelf board 23 and the wood 22a with the mouth stick are removed. Reed 24 and keyboard 25 placed on the upper surface of the
Must be removed and then the wood screw 21 must be removed.
Therefore, the work of removing the mouthpiece 22 becomes complicated.

The present invention has been made to solve such a problem, and in a grand piano or the like, the mouth stick can be easily removed from the shelf board, and the keyboard and the action can be efficiently adjusted. The object is to provide a keyboard instrument that can be used.

[0008]

A keyboard instrument according to the present invention has a mouthpiece having a plurality of convex portions on its back surface, and a shelf plate having an insertion hole for the convex portions on its front surface. Is inserted into the insertion hole, so that the mouthpiece is attached to the shelf board in a state of being in contact therewith.

In the present invention, the convex portion is provided on the back surface of the mouth rod, and the insertion hole for inserting the convex portion is provided on the front surface of the shelf plate to which the mouth rod is attached. By inserting it, the back of the mouth stick and the front of the shelf board can be brought into contact with each other, and the mouth stick can be easily attached to the shelf board. Can be easily removed.

Further, it is preferable that a locking member for locking the convex portion is provided in the insertion hole of the shelf plate. With this configuration, by providing the locking member that locks the convex portion in the insertion hole, it is possible to hold the mouthpiece only by this locking member, so that the size of the insertion hole can be made larger. It can be made sufficiently larger than that, and when attaching the mouthpiece to the shelf board,
The protrusion can be easily inserted into the insertion hole without accurately aligning the protrusion with the insertion hole. In addition, since dimensional accuracy is not required when forming the insertion hole in the shelf board, the formation processing of the insertion hole is easy. Further, by holding the convex portion in the insertion hole by the locking member in the insertion hole, the mouth bar can be securely attached to the shelf board.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG.
It is sectional drawing which shows the mouth stick attachment part in the keyboard instrument which concerns on the 1st Embodiment of this invention, specifically, for example, the shelf board of a grand piano, (a) is before attachment of a mouth stick, (b) is that. The state after installation is shown. As shown in FIG. 1 (a), the mouthpiece 2
A dowel 2a is provided on the back surface 2b of the device perpendicularly to the surface. The dowels 2a are provided at least at both ends of the mouthpiece 2 in the longitudinal direction. On the other hand, on the front surface 3b of the shelf board 3 arranged under the side plate 1 of the grand piano,
An insertion hole 3a for inserting the dowel 2a of the mouthpiece 2 is provided. The insertion hole 3a is formed sufficiently larger than the size of the dowel 2a. Further, inside the insertion hole 3a, a receiving metal fitting 4 for holding the dowel 2a when the dowel 2a is inserted is provided. The bracket 4 can be formed of, for example, a leaf spring.

When the mouth bar 2 thus formed is attached to the shelf board 3, the mouth bar 2 is moved in the direction of the arrow to move the dowel 2a of the mouth bar 2 as shown in FIG. 1 (a). By inserting into the insertion hole 3a of the shelf board 3, the back surface 2b of the mouthpiece 2 is brought into contact with the front surface 3b of the shelf board 3. By attaching the mouthpiece 2 to the shelf board 3 in this manner, the attachment can be easily performed.

When the mouth stick 2 is removed from the shelf board 3, the mouth stick is not required to remove a time signature (not shown) or a reed (not shown) as in the conventional case (see FIGS. 3 and 4). Two
1 can be easily removed from the shelf plate 3 by moving in the direction opposite to the arrow direction shown in FIG. As a result, the keyboard and action of the keyboard instrument can be adjusted more efficiently than before.

Further, in this embodiment, the shelf board 3 is used.
Since the mouthpiece 2 is attached to the front surface 3b of the
Since it is not necessary to attach a decorative plate to the front surface 3b of the shelf board 3 and to apply a coating, the manufacturing cost can be reduced and the assembly process can be simplified.

Next, another embodiment of the present invention will be described. FIGS. 2A and 2B are cross-sectional views showing the mouthpiece mounting portion of the shelf board of the keyboard musical instrument according to the second and third embodiments, respectively. As shown in FIG. 2A, in the insertion hole 3a of the shelf plate 3, a piece of receiving metal fitting 5 bent in a V shape is provided. When the mouth bar 2 is attached to such a shelf plate 3, the dowel 2a of the mouth bar 2 is inserted into the insertion hole 3a of the shelf plate 3 as in the above-described first embodiment. As a result, the dowel 2a is sandwiched between the receiving fitting 5 and the side surface inside the insertion hole 3a, and the same effect as that of the above-described first embodiment is obtained.

Further, in the keyboard musical instrument according to the third embodiment, as shown in FIG. 2B, the insertion hole 3a of the shelf board 3 is inserted.
A concave mounting tool 6 made of an elastic material such as rubber
When the mouthpiece 2 is attached to the shelf board 3, the convex portion 2c provided on the back surface of the mouthpiece 2 is inserted into the insertion hole 3a of the shelf board 3. Then, the tip portion of the convex portion 2c of the mouthpiece 2 and the fitting 6 in the insertion hole 3a are fitted to each other, and thus the same effect as that of the above-described first embodiment is obtained.

[0017]

As described above, according to the present invention,
In a keyboard instrument, a convex portion is provided on the back surface of the mouth stick, and an insertion hole for inserting the convex portion is provided on the front surface of the shelf plate to which the mouth stick is attached. It can be easily attached to and detached from the plate. Therefore, the keyboard or action can be adjusted more efficiently than before.

Further, by providing a locking member for locking the convex portion inside the insertion hole of the shelf board, the insertion hole can be formed sufficiently larger than the size of the convex portion. Therefore, even if the convex portion is not accurately aligned with the insertion hole, the convex portion can be easily inserted into the insertion hole, and the mouthpiece can be easily attached to the shelf board. Furthermore, the locking member in the insertion hole allows the mouth bar to be securely attached to the shelf board.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mouthpiece mounting portion in a shelf board of a keyboard instrument according to a first embodiment of the present invention, (a) before attachment of a mouthpiece, and (b) after attachment. Indicates.

2 (a) and (b) are respectively the second aspect of the present invention.
FIG. 11 is a cross-sectional view showing a mouthpiece mounting portion on a shelf board of a keyboard instrument according to a third embodiment.

FIG. 3 is a sectional view showing a mouthpiece mounting portion of a shelf board in a conventional keyboard instrument.

FIG. 4 is a cross-sectional view showing a mouthpiece mounting portion of a shelf board in another conventional keyboard instrument.

[Explanation of symbols]

 1 side plate 2, 12, 22 mouthpiece 2a, 12a dowel 2b back surface 2c convex portion 3, 13, 23 shelf plate 3a, 13a insertion hole 3b, 13b, 23b front surface 4, 5 bracket 6 fixture 12b slap wood 14 slap wood 14a Mouth bar locking part 21 Wood screw 22a Mouth bar wood 23a Mouth bar engagement part 24 Reed 25 Keyboard 26 Front pin

Claims (2)

[Claims] 1. A back rod having a plurality of convex portions on a back surface thereof, and a shelf plate having an insertion hole for the convex portions provided on a front surface thereof, and by inserting the convex portions into the insertion holes, A keyboard instrument, wherein the mouthpiece is attached to the shelf board in a state of being in contact therewith. 2. The keyboard instrument according to claim 1, wherein a locking member that locks the convex portion is provided in the insertion hole.