JPS6219592Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a piano packing device.

(Conventional technology) The weight of an upright type piano is 200
Since the weight is between 300 kg and 300 kg, wooden boxes are generally used as packing equipment for pianos.

1 to 3 show an example of this piano packing device. This item consists of five panels c to g, each of which has reinforcing frames b fixed in a grid pattern on the surface of plywood a, which are assembled into a box shape, and this is placed on a bottom pallet h for a piano i. and fix it on the bottom pallet h. Then, fix the piano i to the packaging box by screwing the fixing bolt j provided on the frame frame b of the back panel d to the support k on the back of the piano i, and use felt etc. to fix the keyboard lid 1 of the piano i. Cushioning material m
Place the keyboard lid presser bar n on which the presser bar n is attached, and connect the L-shaped metal fittings p fixed to both ends of the presser bar n and the frame beams b of the left and right side panels e and f with the bolts q and A pair of presser members t are provided between the lower end of the inner surface of the front panel c and the piano front base s to secure the piano i with nails r and further prevent the piano i from moving in the front-rear direction.
It has a structure in which a support crosspiece U is fixed to the lower inner surface of the front panel c, and a chair packaging box W is fixed with a cloth string v attached to the support crosspiece U.

4 and 5 show a packaging device proposed by the applicant, which is an improvement on the wooden packaging device described above. In this product, the bottom part and the bottom left and right pads for supporting the piano legs are fixed in an overlapping state on a low pallet, and a communicating notch is provided at each corner of the polymer.
Vertical holes are formed between the L-shaped metal fittings protruding from each corner of the bottom pallet, the lower ends are fitted into the vertical holes, and left and right columns are erected, and between the left and right columns, both shoulders of the piano are installed. A horizontal crosspiece supported by side pads wrapped around the front part of the piano is constructed, and the keyboard cover and mouth bar on both sides of the piano are held between the grooves of the side pads, and the front part of the piano and the horizontal crosspiece are sandwiched. It is constructed by interposing pads for fixing the front and rear of the piano, and by interposing fixing pads between the chair packaging box XI fixed on the bottom pad and the piano lower front plate XII. In the figure, is a cardboard box, and each pad is made of foamed plastic.

(Problems to be Solved by the Invention) The packaging apparatus shown in FIGS. 1 to 3 described above is expensive because all the constituent members such as the panels c to g and the bottom pallet h are made of wood. It is also inconvenient to transport due to its large weight.
In addition, since it is not dried during the manufacturing process, the moisture content is high at over 15%.Therefore, in order to protect parts that are prone to rust, such as music wires, which are component parts of the piano, moisture and rust prevention is applied from the top of the piano. It is necessary to cover the entire circumference of the piano i by covering it with waxing paper It rises further. In addition, since all assembly work is done by nailing, the workability during packing and unpacking is extremely poor.Especially when exporting, intermediate dealers have to unpack the product, adjust the product, and then repack it. It requires a lot of effort. Furthermore, for the convenience of assembly and packaging, the wooden packaging box has the other four panels d to g, excluding the bottom pallet h and front panel c, assembled in advance during transportation or storage before use. Because of this, it is very bulky and has low transportation efficiency when transported, and requires a large storage space when stored. This packaging box o
is a drop test using the method shown in Figure 10 (height h is 15
cm, H is 60cm), an accident occurred in which the adhesive part of the piano main board peeled off due to the impact received by the bottom pallet h. In addition, when a packaging box is overturned on the fork z of a forklift from both the front and rear sides as shown in Figure 11, or when three packaging boxes are stacked vertically as shown in Figure 12, the Impact loads and pressure loads during vertical stacking are applied to the piano i through each panel, and accidents often occur in which the exterior surface of the piano is damaged due to contact between each panel and the piano body.

In addition, what is shown in FIGS. 4 and 5 is the first
Although it is lighter and less expensive than the wooden packing equipment shown in Figures 3 to 3, direct contact between the piano and the foamed plastic during work and transportation may cause scratches or clouding of the painted surface of the piano. In addition, since the keyboard cover is prevented from opening with foamed plastic side pads, the load applied to both pads can cause the foamed plastic to turn into powder and scatter inside the box, adhering to the piano and causing scratches. It is easy to use, and the support and upper horizontal beam are separated.
The horizontal bars sink due to the pressure load during stacking, compressing the cushioning material, and applying pressure to the top of the main board, which causes scratches on the painted surface due to friction. Square timbers were also installed at each corner of the supports. Because they were simply inserted into recesses, they lacked stability, making it difficult to stack them in multiple layers.

The present invention, like the one previously proposed by the applicant, is constructed by combining cardboard, foamed plastic, and wood to eliminate the conventional drawbacks, and also prevents the internal foamed plastic from being damaged by load. The object of the present invention is to provide a piano packing device that is less likely to cause scratches on the piano.

(Means for solving the problems) In order to achieve the above-mentioned object, the present invention is characterized by comprising a piano mounting member consisting of a bottom pallet, a bottom pad placed on the bottom pallet, and a piano front base support pad fixed in a predetermined position on the bottom pad, front and rear panels erected on the front and rear of the bottom pallet, a cardboard cover covering the top surfaces of the piano's roof, upper panel, keyboard cover and mouthpiece, side pads which cover the piano's roof, upper panel, keyboard cover, ends of the mouthpiece and main board from above the cardboard cover, a top panel which is hung on the erected front and rear panels, cardboard to be placed on the top panel, and a cardboard box which covers the assembled front panel, rear panel, top panel and cardboard.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 6 to 8 show an example of its implementation.

In the figure, 1 is a bottom pallet, and the bottom pallet 1 consists of vertical bars 1-1, horizontal bars 1-2, side plates 1-3, and L-shaped corner fittings 1-4 made of wood. 1-4 are nailed to the end surface of the vertical beam 1-1 and the outer surface of the side plate 1-3. 2 is a bottom pad placed on the bottom pallet 1, and the bottom pad 2 includes a cardboard board 2-1 and a bottom plate receiving pad 2-2 made of foamed plastic stuck thereon.
The bottom plate receiving pads 2-2 support the vertical load of the piano, and the bottom left and right pads 2-3 support the lateral loads of the piano, and protect the piano from impact by its cushioning effect. It has the function of Reference numeral 3 denotes a front base receiving pad which is attached with a nail to the bottom pad 2 placed at a predetermined position on the bottom pallet 1, and the bottom pallet 1 is connected to the bottom pallet 1.
A piano mounting member is constituted by a bottom pad 2 placed on the bottom pallet 1 and a piano front base receiving pad 3 fixed at a predetermined position of the bottom pad 2 placed on the bottom pallet 1. 4 is the roof 5-1, the upper front plate 5-2, the keyboard lid 5-3, and the mouth bar 5 of the piano 5.
-4 is a cover made of cardboard, and a foamed plastic member 4-1 is attached to the center of the front surface. 6 holds the cover 4 placed over the piano 5 from the top on both sides and removes the roof 5-1, the upper front plate 5-2, and the keyboard lid 5-3 of the piano 5.
and a side pad that is fitted to cover both sides of the mouth rod 5-4 and the main plate 5-5, and inside the side pad 6 there is a cushioning material 6-1, 6 such as foamed plastic in the front-rear direction of the piano. -2, 6-3, lateral cushioning material 6-4 and upper cushioning material 6-5, 6-6
is pasted. 7 is a front panel, and the front panel 7 includes a support 7-1, a horizontal beam 7-2, and a reinforcing tree 7-.
3. It is composed of a receiving member 7-4 for the arm 5-6 and an assembly fitting 7-5 for these. 8 is a rear panel, and the rear panel 8 includes a support 8-1, a horizontal beam 8-2, a reinforcing tree 8-3, a rear pad 8-4, and an assembly metal fitting 8-5.
It is composed of Reference numeral 9 denotes a top panel 10 which is placed on the horizontal beams 7-2 and 8-2 of the front panel 7 and rear panel 8 arranged on the front and rear sides of the piano, and which holds down the piano body from above and prevents the roof 5-1 from opening. is the cardboard to be placed on top of it.

Thus, the bottom pad 2 is placed in a predetermined position on the bottom pallet 1.
A front base receiving pad 3 is attached to two places on the front surface of the piano with nails, and a piano 5 is placed on the bottom plate receiving pad 2-2 so as to come into contact with the front base receiving pad 3. Next, the cover 4 is placed over the top of the piano 5, and the side pads 6, 6 are fitted to the sides of the piano 5 from the left and right so as to press both sides of the cover 4 from above. As shown in FIGS. 9A, B, and C, the width _d 1 of the groove formed between the L-shaped fitting 1-4 and the horizontal bar 1-2 that abuts the end surface of the vertical bar 1-1 of the bottom pallet 1.
is equal to the thickness d ₁ of the horizontal bar 8-2 of the rear panel 8,
Since the width d ₂ of the groove formed between the outer surface of the vertical beam 1-1 and the L-shaped fitting 1-4 is equal to the thickness d ₂ of the support 8-1 of the rear panel 8, The lower ends of the front panel 7 and the rear panel 8 are fitted into the L-shaped grooves formed at the corners, so that the front panel 7 and the rear panel 8 are erected. A top panel 9 is placed on the upper horizontal beams 7-2 and 8-2 of the front panel 7 and rear panel 8 which are erected, and a cardboard box 10 is placed thereon. In this assembled state, the side pad 6 contacts the receiving member 7-4 of the armrest 5-6 of the front panel 7 on the front side, contacts the horizontal bar 8-2 of the rear panel 8 on the back side, and It contacts the top panel 9 at the top, and contacts the supports 7-1 and 8-2 of the front panel 7 and rear panel 8 at the sides. A chair packaging box 11 is placed on the front base receiving pad 3 and attached to the pad 3 with a cloth string fixed to the pad 3. After assembling in this manner, the cardboard box 12 is placed over the top and the lid is closed. As described above, the structure in which the front panel 7 and the rear panel 8 are erected on the bottom pallet 1 is different from the structure in which square timber supports are fitted into the vertical holes as shown in FIGS. 4 and 5. 7 and the rear panel 8 in the left-right and front-rear directions, the mechanical stability against load and impact load at the time of overturning or falling can be increased. Also, the side pads 6 that are pressed inward by the supports 7-1 and 8-1 of the front panel 7 and the rear panel 8 are connected to the roof 5-1 of the piano 5, the upper front plate 5-2, and the keyboard lid. 5-3 and the mouth bar 5-4 from above to prevent the keyboard lid 5-3 from opening, the load exerted from the keyboard lid 5-3 on the pads 6, 6 on both sides is the same as that of the cover 4. Therefore, powder is less likely to be generated from the foamed plastic cushioning materials 6-1 to 6-6 of the side pad 6, and since it is covered with the cardboard cover 4, the amount of powder adhering to the piano 5 is reduced. few. In addition, the front panel 7 and the rear panel 8 are each assembled as one body, and the whole structure supports the pressure load, so the pressure load is not applied to the piano, which could cause damage to the case. There is no fear. Incidentally, in FIG. 7, numeral 13 indicates a waxing paper.

(Effects of the invention) In order to achieve the above-mentioned purpose, the present invention includes a bottom pallet, a bottom pad placed on the bottom pallet, and a piano front fixed at a predetermined position on the bottom pallet. A piano mounting member consisting of a base support pad, a front panel and a rear panel erected at the front and rear parts of the bottom pallet, and covering the roof, upper front plate, keyboard lid, and upper surface of the mouth bar of the piano. a cardboard cover; a side pad that covers the roof of the piano, the upper front board, the keyboard lid, the end of the mouth bar, and the main board from above the cardboard cover; and a top panel that spans the upright front panel and rear panel; The cardboard to be placed on the top panel, the assembled front panel, rear panel,
Since it is equipped with a top panel and a cardboard box that covers the cardboard, it has excellent mechanical stability against pressure loads and impact loads due to falls and overturning, and the piano will not be scratched. It has the advantage of being lighter and cheaper than a box-like assembly of five panels to which reinforcing frames are fixed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional piano packing device, Fig. 2 is a sectional view thereof, Fig. 3 is an exploded perspective view, and Fig. 4 is a perspective view of a piano packing device previously proposed by the applicant. 5 is a sectional view thereof, FIG. 6 is a perspective view of one embodiment of the present invention, FIG. 7 is a sectional view thereof, FIG. 8 is an exploded perspective view thereof, and FIGS. 9A, B, and C are respective bottom pallets. 1, a perspective view of the lower corner of the rear panel 8 corresponding to the corner, and the bottom pallet 1.
10, 11 and 1
Figure 2 is a diagram showing the aspects of the drop, overturn, and three-tier loading tests, respectively. 1...Bottom pallet, 2...Bottom pad, 3...Front base support pad, 4...Cover, 5...Piano, 6
...Side pads, 7...Front panel, 8...Rear panel, 9...Top panel, 10...Cardboard.

Claims (1)

[Claims for Utility Model Registration] 1. A piano mounting member consisting of a bottom pallet, a bottom pad placed on the bottom pallet, and a piano front base support pad fixed at a predetermined position on the bottom pad; The front panel and rear panel erected at the front and rear of the pallet, the roof of the piano,
A cardboard cover that covers the top surface of the upper front board, the keyboard lid, and the mouth bar; a side pad that covers the roof of the piano, the upper front board, the keyboard lid, the ends of the mouth bar, and the main board from above the cardboard cover; A piano comprising: a top panel that spans the front panel and rear panel, a cardboard box that is placed on the top panel, and a cardboard box that covers the assembled front panel, rear panel, top panel, and cardboard box. Packing equipment. 2. The front panel and the rear panel mainly consist of columns and horizontal bars, and the horizontal bars are formed in an L-shape with respect to the columns, and the bottom pallet has the columns of the front panel and the rear panel at its corners. and an L-shaped groove into which the horizontal crosspiece is fitted.