JPH10133645A - Upright piano - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upright piano with which the easy and sure mounting of end panels to a support assembly is possible while the appearance of these end panels is well maintained without using a press machine. SOLUTION: This upright piano has the backpost assembly 1 which has outer backposts in both side parts and is formed with detaining recesses 15 in the prescribed positions on the respective outer flanks of these outer supports and the end panels 11 which are formed by fixing engaging members 18 fittable into the detaining recesses 15 of the outer backposts in the prescribed positions of the inner flanks. The end panels 11 are fixed to the support assembly 1 by tightening the screws passed from the outer support side to the engaging members 18 in the state of fitting the engaging members 18 to the detaining recesses 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright piano and, more particularly, to a mounting structure of a main plate to a supporting column assembly.

[0002]

2. Description of the Related Art FIG. 11 shows a general structure of a column assembly and a main plate of a conventional upright piano, and a method of mounting them. This pillar assembly 51 is formed by framed wooden timber, and includes left and right outer pillars 52, 5 and 5.
2, a plurality of middle pillars 3 on the inner side thereof, a girder 4 extending in the lateral direction, a base 5 and a box 6.

[0003] A sound board 7, a frame 8, a string 9, and the like are further attached to the column assembly 51, and a back assembly 10 is provided.
(See FIG. 2). Then, a case component is sequentially attached to the completed back product 10, whereby an upright piano as shown in FIG. 3 is completed.

[0004] The case parts are generally constructed of plywood such as Lauan.
As shown in FIG.
You can start by attaching them to both outer surfaces of each.
In this case, each master plate 53 is pre-assembled as a master plate assembly 54 to which the arms 12 and the base 13 are attached. When attaching to the support | pillar assembly 51, the support | pillar assembly 51 is first laid horizontally, and an adhesive is applied to each outer surface including the outer support | pillar 52. FIG. Next, the parent plate 53 is brought into contact with each outer surface of the column assembly 51 while positioning the inner surface of the parent plate 53 of the corresponding parent plate assembly 54, and is pressed from both sides by a press (not shown) so that the parent plate 53 is pressed. It is crimped to the column assembly 1.

[0005] As described above, the master plate 53 to the support column assembly 51 is provided.
The mounting is performed by bonding without using screws or the like for the following reasons. That is, since the master plate 53 plays a role of supporting the weight of the piano together with the support column assembly 51, it is necessary to firmly fix the master plate 53 to the support column assembly 51 and form a part of the exterior of the piano. Need to preserve appearance. On the other hand, for example, when the screw is tightened from the master plate 53 side, the head of the screw appears on the outer surface of the master plate 53, and impairs the appearance of the piano,
When the screws are tightened from the outer support 52 side, the main plate 53
This is because the thickness of the base plate 53 is insufficient, so that the tightening force of the screw cannot be sufficiently exerted, and the master plate 53 cannot be firmly fixed to the column assembly 51.

[0006]

However, as described above, in the conventional method of attaching the master plate 53 to the column assembly 51 only by bonding, in order to firmly fix the two 51, 53 to each other, It is necessary to press the master plate assembly 54 against the column assembly 51, and a large-sized press is indispensable. As a result, the equipment cost increases, and the manufacturing cost of the piano increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to easily and firmly attach a main plate to a column assembly while maintaining a good appearance of the main plate without using a press machine. The purpose of the present invention is to provide an upright piano that can be attached to a piano.

[0008]

In order to achieve this object, an upright piano according to the present invention has outer struts on both sides, and engaging recesses are formed at predetermined positions on the outer surfaces of these outer struts. And a main plate having an engaging member fixed at a predetermined position on the inner surface thereof, the engaging member being engageable with the engaging concave portion of the outer post. In the assembled state, a screw passed from the outer support side is fastened to the engaging member, thereby being fixed to the support assembly.

According to this structure, the engaging member fixed to the inner surface of the main plate is fitted into the engaging concave portion formed on the outer surface of the outer column of the column assembly, and the screw passed from the outer column side is provided. Is tightened to the engaging member, whereby the master plate is fixed to the column assembly. That is, since the engaging member is integrally added to the inner surface of the master plate and the screw is tightened to the engaging member, a sufficient screwing length can be secured by compensating for the lack of thickness of the master plate, and Tightening force can be fully exhibited. As a result, the main plate can be easily and firmly fixed to the column assembly simply by tightening the screws, and a conventional large press machine is not required.

[0010] Further, since the engaging member and the engaging recess are provided at predetermined positions of the master plate and the support post assembly, the fitting member is fitted into the engaging recess when the master plate is attached. By itself, the master plate can be accurately positioned with respect to the column assembly, so that a separate positioning means is not required.

Further, since the screw is passed from the outer column side of the column assembly, the head of the screw does not appear on the outer surface of the main plate, and the thickness of the engaging member is sufficiently ensured.
Since the outer surface of the master plate is not pushed by the tip of the screw and does not swell, the appearance of the master plate can be favorably maintained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. In the following description, the same reference numerals are used for the same components as those of the conventional upright piano described above.

FIG. 1 shows a pillar assembly of an upright piano to which the present invention is applied. This post assembly 1
Assembled by framed wooden timber.
Then, by attaching a soundboard 7, a frame 8, a string 9, and the like to the support post assembly 1, a back assembly 10 as shown in FIG. 2 is completed.
By sequentially attaching the case components including the left and right master plates 11 and 11 to 0, an upright piano as shown in FIG. 3 is completed.

The column assembly 1 includes left and right outer columns 2,
2, a plurality of middle struts 3 inside thereof, a girder 4 and a base 5 and a box 6 which are passed laterally above and below them. As shown in FIG. 4, a long groove 15 (engaging recess) is formed on the outer surface of each of the outer columns 2.
Extends through the center in the width direction of the outer surface of the outer support column 2 and extends over the entire vertical direction. In addition, four screw mounting holes 17 for screws 16 (see FIG. 10) for mounting the master plate 11 are formed on the inner side surface of the outer support column 2 so as to open into the long grooves 15.

The long groove 15 and the screw mounting hole 17 may be formed in the outer column 2 before the column assembly 1 is assembled, or may be formed after the column assembly 1 is assembled. Also,
As shown in FIG. 5, the long groove 15 can be formed without penetrating in the vertical direction.

The case parts are generally made of plywood such as Lauan, and each main plate 11 is pre-assembled as a main plate assembly 14 to which a brace 12 and a base 13 are attached as shown in FIG. ing. At a predetermined position on the inner surface of the master plate 11, a square bar 18 (engaging member) is attached by screwing together with bonding. This square bar 18
Has a length and width that fit snugly into the long groove 15 of the outer column 2 of the column assembly 1.

When attaching the master plate assembly 14 including the master plate 11 to the column assembly 1 (actually, the back assembly 10), the column assembly 1 is first placed horizontally as shown in FIG. The master plate assembly 1 corresponding to the long groove 15 of the outer support 2
By fitting the four square bars 18, the column assembly 1
The temporary assembly is performed at the same time when the master plate assembly 14 is positioned.
Next, as shown in FIG. 8, other case components, that is, the shelf board 19, the mouth bar 20, the front base 21, the bottom plate 22, and the like are attached. As a result, the case parts have a box-shaped structure,
The fitting state between the column assembly 1 and the master plate assembly 14 can be maintained.

Thereafter, these column assemblies 1 and the like are shown in FIG.
Then, as shown in FIG. 10, as shown in FIG. 10, a screw 16 is inserted into a screw mounting hole 17 of each outer column 2, and the screw 16 is tightened to a square bar 18, so that the master plate assembly 14 is To the column assembly 1. Then, by attaching other components, the upright piano shown in FIG. 3 is completed.

As described above, according to the upright piano of the present embodiment, the square bar 18 is integrally added to the inner surface of the main plate 11 and the screw 16 is fastened to the square bar 18, so that the parent A sufficient screw-in length can be secured by compensating for the insufficient thickness of the plate 11, and the tightening force of the screw 16 can be sufficiently exhibited. As a result, just tighten the screw 16,
Since the main plate 11 can be easily and firmly fixed to the column assembly 1, a conventional large press machine is not required, and the cost of equipment and the production cost of the piano can be reduced accordingly.

Since the long groove 15 and the square bar 18 are provided at predetermined positions of the column assembly 1 and the main plate 11, respectively, the square bar 18 is inserted into the long groove 15 when the main plate assembly 14 is mounted. Just by fitting, the master plate assembly 14 can be accurately positioned with respect to the column assembly 1, and therefore, a separate positioning means can be omitted.

Further, since the screw 16 is passed from the outer column 2 side of the column assembly 1, the head of the screw 16 does not appear on the outer surface of the main plate 11, and the thickness of the square bar 18 is sufficiently ensured. By doing so, the outer surface of the master plate 11 does not swell due to being pushed by the tip of the screw, so that the appearance of the master plate 11 can be favorably maintained.

The present invention is not limited to the embodiment described above, but can be implemented in various modes.
For example, in the embodiment, one long groove 15 and a square bar 18 continuously extending in the vertical direction are employed as engagement means for fitting the main plate 11 to the column assembly 1. A plurality of engagement holes spaced apart from each other,
A plurality of engagement projections that can be fitted to these may be used. In addition, the detailed configuration can be appropriately changed without departing from the spirit of the present invention.

[0023]

As described in detail above, the upright piano of the present invention can easily and firmly attach the parent plate to the support column assembly without using a press machine, while maintaining the good appearance of the parent plate. It has effects such as being able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a column assembly of an upright piano according to an embodiment of the present invention.

FIG. 2 is a perspective view of a back assembly in which a soundboard and the like are attached to the column assembly of FIG. 1;

FIG. 3 is a perspective view of a completed upright piano.

FIG. 4 is a perspective view, a side view, and a front view of an outer support of the support assembly of FIG. 1;

FIG. 5 is a perspective view showing another embodiment of the outer support.

FIG. 6 is a perspective view of a master plate assembly including the master plate.

FIG. 7 is a perspective view showing a mounting state of a master plate assembly to a support column assembly.

FIG. 8 is a perspective view showing an attachment state of another case component.

FIG. 9 is a view showing a column assembly and the like standing upright after the mounting of FIG. 8;

FIG. 10 is a rear view showing a state in which the master plate assembly is screwed to the support column assembly.

FIG. 11 is a perspective view similar to FIG. 7, of a conventional upright piano.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support assembly 2 Outer support 11 Main plate 14 Main plate assembly 15 Long groove (engagement concave part) 16 Screw 18 Square bar (engagement member)

Claims (1)

[Claims] 1. A pillar assembly having outer struts on both sides and an engagement recess formed at a predetermined position on each outer surface of the outer struts; and a support assembly of the outer strut at a predetermined position on an inner surface. A master plate to which an engaging member that can be fitted into the mating recess is fixed, and the master plate is configured to receive a screw passed from the outer support column while the engaging member is fitted in the engaging recess. An upright piano, wherein the upright piano is fixed to the column assembly by tightening the engagement member.