JPH1078774A - Side plate of grand piano and method of manufacturing the same - Google Patents

Abstract

(57) [Problem] To provide a grand piano that can maintain a good appearance without making the seam between the side plate main body and the shelves attached on the shelf noticeable, and can improve coating quality and reduce manufacturing costs. A side plate and a method of manufacturing the same are provided. SOLUTION: A side plate main body 2 having a shape along the outer periphery of the grand piano, the outer surface of which is painted, and an elongated rod shape having a rectangular cross section are formed on the front lower surface of the side plate main body 2 along the side plate main body 2. And a shelves 3 attached to the outer surfaces so as to be flush with each other and coated on the outer surface. The side plates 2 and the shelves are provided along the boundary between the side plate body 2 and the shelves 3. The groove 8 is formed so as to straddle the superscript 3, and the groove 8 is painted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side plate of a grand piano having a side plate main body and a shelves attached to a lower surface thereof, and a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 5 shows the appearance of a conventional grand piano. As shown in the figure, the side plate 31 is provided so as to surround the outer periphery of the grand piano, and a side plate main body 32 constituting a part of the exterior, and a shelves attached to a lower surface of a front part of the side plate main body 32. 33, and an arm 34 having a predetermined shape is formed at the front end.

As shown in FIG. 4, the side plate main body 32 is composed of a laminated plate 32a in which a plurality of veneers are laminated, and a decorative veneer 32b adhered to the surface of the laminated plate 32a. ing. The shelf overlay 33 is provided as a part for attaching the shelf board 36 and as a part for securing a height for attaching the mouthpiece 37. Side plate body 32
Is composed of a plywood 33a in which a plurality of veneers are stacked and a decorative veneer 33b adhered to the surface of the plywood 33a, and is formed in an elongated rod shape having a rectangular cross section. Conventionally, assembly and processing of the side plate 31 are performed as follows.

First, as shown in FIG. 4, the side plate main body 32 having the above-described configuration is bonded to the outer peripheral surface of the stack 35 such that the lower surfaces thereof are flush with each other. Next, on the lower surface of the front portion of the side plate main body 32 and the loading 35,
The shelves 33 having the above-described configuration are bonded so that the inner surfaces thereof are flush with each other. In this case, the thickness T1 of the shelf overlay 33 is smaller than the sum T of the thicknesses of the side plate main body 32 and the stack 35, and therefore, the outer surface of the shelf overlay 33 has a thickness of The state is retracted one step further inside the side plate main body 32 by the difference ΔT (= T−T1). This arrangement of the shelf attachment 33 with respect to the side plate main body 32 is such that when the outer surfaces of the both are flush with each other, a seam between the two appears in a stripe shape after painting, which will be described later, and is conspicuous. This is because the appearance may be impaired, and this is to prevent this. Next, by cutting the side plate main body 32 and the stack 35 in a predetermined shape in the vertical direction, the arm bar 34 is formed, and the decorative veneer 34a is bonded to the cut surface (see FIG. 5). Next, after these surfaces are grounded by sanding, they are painted by, for example, black paint. Finally, buffing and polishing are performed, and the side plate 3
1 is completed.

[0005]

However, in the above-mentioned conventional side plate 31, the shelves 33 are retracted inward with respect to the side plate main body 32 and there is a step between them, so that they are sanded. On the other hand, the sander machine can be applied to the side plate main body 32 having a large area, while the sander machine is difficult to apply to the shelves 33 having a small area and being retracted inward. I have to do it by work. For this reason, the work efficiency of sanding is not good, and the sanding material 33 by hand cannot be sanded sufficiently, and the ground leveling tends to be insufficient especially near the corner with the side plate body 32.

The same is true for the buffing, which is performed by a machine for the side plate main body 32 and a manual operation for the shelf attachment 33, so that the work efficiency is not good, and For the superscript 33, sufficient buffing cannot be performed, and polishing is particularly insufficient near a corner. As a result, the low work efficiency of sanding and buffing causes an increase in manufacturing cost, and the coating quality varies, for example, insufficient gloss occurs near the corner of the shelves 33, resulting in good coating quality. There is a problem that can not be secured.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can maintain a good appearance without conspicuous the joint between the side plate body and the shelves and improve the coating quality. It is another object of the present invention to provide a grand piano side plate and a method for manufacturing the same, which can reduce the manufacturing cost.

[0008]

In order to achieve this object, a side plate of a grand piano according to the present invention has a shape along the outer periphery of the grand piano, a side plate body having an outer surface painted, and a rectangular cross section. An elongated rod-like member is provided on the lower surface of the front part of the side plate main body, attached along the side plate main body and in a state where the outer surfaces are flush with each other, and provided with a shelf overlay having an outer surface painted. A groove is formed along the boundary with the shelf overlay and extends over the side plate main body and the shelf overlay, and the groove is painted.

[0009] According to the side plate of the grand piano, the groove itself formed along the boundary between the shelf overlay and the side plate body,
Part of the exterior design of the piano. In addition, the seam between the side plate body and the shelves is retracted to the back of the groove, and the groove including this seam is painted, so the seam is very difficult to see from the outside and it is inconspicuous The appearance of the piano is kept good.

[0010] Further, as a result of the shelves being attached to the side plate main body in a state of being flush with the outer surface, the painting is performed after the shelves are attached, so that sanding or painting for painting can be performed. Later buffing can be performed simultaneously with a machine, and their work efficiency is improved compared to the conventional case where manual work had to be used together,
Manufacturing costs are reduced. In addition, insufficient sanding and buffing by manual work is eliminated, and uniform and good coating quality can be obtained by simultaneous sanding and buffing of the side plate main body and the shelves on the shelf.

In this case, it is preferable that the grooves are painted in the same color as the outer side surfaces of the side plate main body and the shelves.

According to this structure, the groove is painted in the same color as the outer surface of the side plate main body and the shelves, so that the groove portion matches the upper and lower side plate main bodies and the shelves in color.
By harmonizing, a better appearance is obtained.

The method for manufacturing a side plate of a grand piano according to the present invention includes a side plate body manufacturing step of manufacturing a side plate body having a shape along the outer periphery of the grand piano, and an elongated rod-shaped shelf overlay having a rectangular cross section. To make a shelf overlay
On the lower surface of the front part of the side plate body, a shelves mounting process of mounting the shelves along the side plate body and the outer surfaces are flush with each other, and the outer surfaces of the side plate body and the shelves are painted. A coating step, a groove processing step of processing a groove along the boundary between the side plate body and the shelf overlay, and straddling the side plate body and the shelf overlay, and a groove coating step of coating the groove. It is characterized by the following.

According to the side plate manufacturing method, the advantages of the side plate of the present invention described above can be obtained. That is,
In the shelf overhanging attachment step, after attaching the shelf overhang to the side plate body with the outer surfaces flush with each other, in the painting step, by painting the outer side surfaces of the side plate body and the shelf overhang, Sanding for painting and buffing after painting can be performed at the same time by a machine, improving work efficiency and reducing manufacturing costs as compared to the conventional case of manual work combined Is done. In addition, uniform and good coating quality can be obtained by simultaneous sanding and simultaneous buffing of the side plate body and the shelves on the shelf.

In the groove forming step, a groove is formed across the side plate main body and the shelves, and in the groove coating step, the groove is painted. And the seam between the side plate body and the shelves is very hard to be seen from the outside, becomes inconspicuous, and a good appearance of the piano is maintained.

In this case, it is preferable that the coating of the groove in the groove coating step is performed in the same color as the coating of the outer side surface of the side plate body and the shelves in the coating step.

According to this manufacturing method, the grooves are painted in the same color as the outer side surfaces of the side plate main body and the shelves, so that the groove portions match the upper and lower side plate main bodies and the shelves in color. -A better appearance is obtained by harmonizing.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 shows a grand piano having a side plate according to an embodiment of the present invention. As shown in the figure, the side plate 1 has a curved shape along the outer periphery of the grand piano GP, and a side plate body 2 constituting a part of the exterior, and a shelf mounted on the lower surface of the front part of the side plate body 2. An attachment 3 is provided, and a brace 4 having a predetermined shape is formed at a front end portion.

As shown in FIG. 1, the side plate body 2 is composed of a laminated plate 2a in which a plurality of Rawan veneers and the like are laminated, and a decorative veneer 2b such as a birch adhered to the surface layer. It is adhered to the outer peripheral surface. A predetermined coating, for example, a black coating, is applied to the outer surface of the side plate main body 2, that is, the decorative veneer 2b.

The shelves 3 are used as attachment parts for the shelf 6
Further, it is provided as a part for securing the height for mounting the mouth bar 7 (see FIG. 3). Shelf attachment 3
Is composed of a plywood 3a in which a plurality of Lauan veneers and the like are stacked and a decorative veneer 3b such as a birch adhered to the surface of the plywood 3a, and is formed in an elongated rod shape having a rectangular cross section. The decorative veneer 3b of the shelf attachment 3 is, for example, black-painted like the side plate body 2. Also, the thickness of the shelves 3
Equal to the sum T of the thickness of the side plate body 2 and the stack 5, the shelf overlay 3 has an inner surface flush with the inner surface of the stack 5 and an outer surface flush with the outer surface of the side plate body 2. In one state, the side plate body 2
And are adhered to their lower surfaces along the stacking 5.

The side plate main body 2 and the shelves 3 have
Along the border between them and across them
Are elongated. The dimensions of the groove 8 are, for example, a width W of 3 mm and a depth D of 1 mm. Further, the groove 8 is coated with black paint like the side plate main body 2 and the shelf overlay 3. According to this configuration, the groove 8 itself formed between the side plate main body 2 and the shelf attachment 3 forms a part of the exterior design of the grand piano GP. Also, the joint between the side plate main body 2 and the shelf attachment 3 is in a state of being retracted to the deep side of the groove 8,
Since the groove 8 including the seam is black-painted similarly to the side plate body 2 and the shelves 3, the seam is very difficult to be seen from the outside and is not conspicuous, thereby maintaining a good appearance of the piano. Can be.

The side plate 1 having the above configuration is manufactured, for example, as shown in FIG. That is, first, the side plate main body 2 having the above-described laminated configuration is manufactured by a press molding machine (not shown) (side plate main body manufacturing step), and the shelf overlay 3 having the above-described plywood configuration is manufactured (the shelf overlay manufacturing step). ). Next, as shown in FIG. 3A, the side plate main body 2 is adhered to the outer peripheral surface of the separately-produced stack 5 so that the lower surfaces thereof are flush with each other. Next, as shown in FIG. 2B, a shelf attachment 3 is placed on the lower surface of the side plate main body 2 and the front part of the stack 5, and the inner surface thereof is flush with the inner surface of the stack 5 and the outer surface. Are adhered so as to be flush with the outer side surface of the side plate main body 2 (shelf-attachment attaching step). The left and right side plates 9 are adhered to the upper surface of the stack 5 (see FIG. 3C). Next, by cutting the side plate main body 2, the side left and right plates 9 and the stack 5 in a predetermined shape in the vertical direction, the arm 4 is formed, and the decorative veneer 4a is adhered to the cut surface (FIG. d)). Next, as shown in FIG. 3E, the surfaces of the side plate main body 2 and the stack 5 are sanded with a sander (not shown), and then painted with black paint (coating step). In this case, the side plate body 2 and the unloading 5
Since these surfaces are flush with each other, these sanding operations can be performed simultaneously at one time. Next, as shown in FIG. 1F, a groove 8 is processed by a trimmer (not shown) along the boundary between the side plate main body 2 and the stacking 5 (groove processing step). Next, as shown in FIG. 3G, the grooves 8 are subjected to black coating (groove coating step). Finally, the surfaces of the side plate body 2 and the stack 5 are polished by buffing with a buff (not shown) to complete the assembly and processing of the side plate 1. Also in this case, since the surfaces of the side plate main body 2 and the stacking surface 5 are flush with each other, these buffing operations can be simultaneously performed once.

As described above, according to the present embodiment, the shelves 3 are attached to the side plate main body 2 in a state of being flush with the outer surface, so that these sanding and buffing can be simultaneously performed once by a machine. In this case, the work efficiency can be greatly improved as compared with the conventional case where manual work is also used, and the manufacturing cost can be reduced accordingly. In addition, uniform and good coating quality can be obtained by simultaneous sanding and buffing of the side plate main body 2 and the shelf attachment 3 by a machine.

The present invention is not limited to the embodiments described above, but can be implemented in various modes.
For example, the present invention can of course be applied to a case where a coating other than the black coating illustrated in the embodiment is performed. In this case, the grooves may be painted in the same manner as the side plate main body and the shelves on the shelf to achieve color harmony. You may give it. In addition, the configuration of the details and the like can be appropriately changed without departing from the spirit of the present invention.

[0025]

As described above in detail, according to the side plate of the grand piano and the method of manufacturing the same according to the present invention, a good appearance can be maintained without making the seam between the side plate main body and the shelves on the shelf noticeable. This has the effect of improving coating quality and reducing manufacturing costs.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a side plate according to an embodiment of the present invention, together with a shelf plate attached thereto.

FIG. 2 is a view illustrating a method of manufacturing the side plate of FIG. 1;

FIG. 3 is a perspective view of a grand piano including the side plate of FIG. 1;

FIG. 4 is a sectional view showing a conventional side plate.

FIG. 5 is a perspective view of a conventional grand piano provided with the side plate of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side plate 2 Side plate main body 3 Shelf attachment 8 Groove

Claims (4)

[Claims] 1. A side plate main body having a shape along the outer periphery of the grand piano, the outer surface of which is painted, and an elongated rod shape having a rectangular cross section, which is formed on the lower surface of the front part of the side plate main body along the side plate main body. And the outer side faces are attached to each other in a state where they are flush with each other, and the outer side faces are provided with a painted shelves, along the border between the side plate body and the shelves, the side plate body and the A side plate of a grand piano, wherein a groove is formed so as to extend over a shelf attachment, and the groove is painted. 2. The side plate of a grand piano according to claim 1, wherein the groove is painted in the same color as the outer side surface of the side plate body and the shelf overlay. 3. A side plate main body manufacturing step of manufacturing a side plate main body having a shape along the outer periphery of the grand piano; a shelf mounting object forming step of manufacturing an elongated rod-shaped shelf overlay having a rectangular cross section; A lower surface of the front plate, along with the side plate main body and the outer surfaces thereof are flush with each other, and the shelf upper object mounting step of mounting the shelf upper object; A coating step of painting, a groove processing step of forming a groove along the boundary between the side plate body and the shelf overlay, and straddling the side plate body and the shelf overlay, and a groove coating of coating the groove And a method for manufacturing a side plate of a grand piano. 4. The method according to claim 3, wherein the coating of the groove in the groove coating step is performed in the same color as the coating of the outer surface of the side plate main body and the shelf overlay in the coating step. Manufacturing method of grand piano side plate.