JPH09187564A - Container for receiving falling object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a container capable of suppressing the generation of noises by absorbing the colliding sounds and bounds of falling objects. SOLUTION: An island tank 1 which receives pin balls 30 falling from above therein and stores the balls has a box body 2 and a silencing sheet 20 affixed to its inside surface. The silencing sheet 20 is composed of a wear resistant and non-foamable polyvinyl chloride(PVC) sheet 21 which is a surface layer, a foamed resin sheet 22 for buffer which is laminated on the rear surface side of the PVC resin sheet 21, a foamed resin sheet 23 for buffer which is laminated on the rear surface side of the foamed resin sheet 22 and has the expansion magnification higher than the expansion magnification of the foamed resin sheet 22. The pin balls 30 collide against the PVC sheet 21 and the collision sounds and bounds at the time of the collision are transmitted to and absorbed by the foamed resin sheets 22, 23 and, therefore, the bounds and collision sounds transmitted to the box body 2 are minimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling object such as a sphere, a piece, a lump, a rod, or a tube falling from above (specifically, a pachinko ball, a medal, a coin, a golf ball, a work piece, or a molding). TECHNICAL FIELD The present invention relates to a container suitable for receiving and storing (e.g., articles) inside, and more specifically, to a technique for suppressing noise when receiving a falling object.

[0002]

2. Description of the Related Art In a pachinko parlor, an island tank 50 is installed for each island 41 in which a plurality of pachinko machines 40 are arranged in parallel as shown in FIG. The island tank 50 surrounded by the outer frame 42 for decoration is shown in FIG.
As shown in FIG. 5, the box body 51 is made of an iron plate. In the island tank 50, there are pachinko balls 30 stored inside.
Is connected to each pachinko machine 40 in the corresponding island 41. In addition, the pachinko balls 30 collected from the respective pachinko balls 40 in the corresponding island 41 are transported to the respective island tanks 50 in the upward direction to transport the island tanks 5.
A belt conveyor 45 for supplying the inside of 0 is connected, and a thick pipe 46 is provided between the adjacent island tanks 50, 50.
Is bridged like a slope.

The pachinko balls 30 supplied by the belt conveyor 45 fall into the corresponding island tanks 50, and pass from the island tanks 50 on the left side to the island tanks 50 on the right side through the thick pipes 46. The sent pachinko balls 30 are designed to drop inside the island tank 50 located on the right side.

[0004]

However, when the pachinko balls 30 fall inside the island tank 50 consisting of a box 51 made of an iron plate, a buzzing sound is produced, which causes a very annoying noise. Therefore, a great soundproofing effect could not be expected for the decorative outer frame 42. Therefore,
Up to now, as shown in FIG. 5, an attempt has been made to reduce noise by attaching a sheet 52 made of vinyl chloride resin to the inner surface of a box body 51 made of an iron plate.
Since the sheet 52 made of vinyl chloride resin cannot sufficiently absorb the collision sound and the bound of the pachinko ball 30 and transmits it to the box body 51, the noise that is still offensive to the ear is still generated.
The above-mentioned problem of noise occurs not only in the island tank 50 but also in other containers that receive falling objects for various purposes.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a container capable of absorbing the collision sound and bouncing of a falling object and suppressing the generation of noise.

[0006]

In order to achieve the above object, the container of the present invention receives and stores therein a falling object such as a sphere, a piece, a lump, a rod, or a tube which falls from above. A container, which comprises a box body and a sound deadening sheet attached to the inner surface of the box body, wherein the sound deadening sheet is a surface layer of a wear-resistant non-foamed polymer sheet, and a non-foamed polymer sheet It is characterized in that it is composed of at least one layer of a foaming polymer sheet for buffer laminated on the back surface side.

Here, the "box" need only have a bottom wall and a peripheral wall, and there is no particular limitation on the shape and material.
The "silence sheet" may be attached to the entire inner surface of the box, or may be attached only to the surface that receives the falling object. The "wear-resistant non-foamed polymer sheet" is not limited to a specific material, but examples thereof include polyurethane resin, vinyl chloride resin, polyethylene resin, polypropylene resin, natural rubber, SBR rubber and the like. The "foamed polymer sheet for cushioning" is not limited to a particular material, either.
Foamed polyurethane resin, vinyl chloride resin, polyethylene resin, polypropylene resin, EPDM rubber, EPM
A rubber etc. can be illustrated. Further, in order to enhance the effect of suppressing noise, the foaming polymer sheet for cushioning is preferably at least two layers (preferably 2 to 4 layers) of foaming polymer sheet having different expansion ratios. In that case, It is preferable that layers having a higher expansion ratio are laminated on the back surface side in order.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. The implementation site of this embodiment is the island 41 of the pachinko parlor shown in FIG. 3 as in the conventional embodiment. Pachinko balls falling from above 3
The island tank 1 which receives and stores 0 inside is shown in FIG. 1 and FIG.
As shown in FIG. 3, the box body 2 and the sound deadening sheet 2 having the product name “Ronfoam (grain 28)” (thickness 2.8 mm) of Ronseal Industry Co., Ltd., which is attached to the entire inner surface of the box body 2.
0.

The box body 2 is formed by assembling a plywood 3 having a thickness of about 12 mm into a box shape having a length of about 700 mm, a width of about 300 mm, and a height of about 400 mm. Bottom wall 4, left and right side walls 5, a front wall 6 and a rear wall 7. A thin pipe connection window 8 is formed at one location at the lower ends of the left and right side walls 5, and three and two thick pipe connection windows 9 are formed in the front wall 6 and the rear wall 7, respectively. Further, at the center of the upper portion of the front wall 6, there is formed a conveyor connecting portion 10 which is cut out in a U shape. The thin pipe connecting window 8 and the thick pipe connecting window 9 are used by closing unnecessary ones with a blind plate 11 depending on the number of various pipes connected to the island tank 1 and the connecting positions.

As shown in FIG. 1, a sound deadening sheet 20 is attached to the left and right side walls 5, the inner surfaces of the front wall 6 and the rear wall 7 of the box body 2 and the inclined upper surface of the bottom wall 4. Muffling sheet 20
Is a wear-resistant non-foaming vinyl chloride resin sheet 21, which is a surface layer, a cushioning foamed resin sheet 22 laminated on the back surface side of the vinyl chloride resin sheet 21, and a back surface side of the foamed resin sheet 22. And a cushioning foamed resin sheet 23 having a higher expansion ratio than the foamed resin sheet 22. The foamed resin sheets 22 and 23 may have the same thickness, but may have different thicknesses.

As shown in FIG. 3, the island tank 1 having the above structure is installed on each island 41 of the pachinko parlor, and
A belt conveyor 45 for transporting the pachinko balls 30 collected from each pachinko machine 40 in the corresponding island 41 in the upward direction and supplying the pachinko balls 30 to the inside of the island tank 1 is connected to the conveyor connecting portion 10, and then the island tank 1 The belt conveyor 45 was surrounded by a decorative outer frame 42 having a pipe port 43. Then, in the thin pipe connection windows 8 on the left and right of each island tank 1, the thin pipes 4 for supplying the pachinko balls 30 stored inside the island tank 1 to the respective pachinko machines 40 in the corresponding island 41.
4, a thick pipe 46 for connecting the two island tanks 1 to each other is connected between the adjacent island tanks 1 and 1, and the thick pipe 46 is bridged in a slope shape in which the left end is high and the right end is low in FIG. Was connected to the thick pipe connecting window 9 on the rear wall 7 of the island tank 1 located on the left side, and the right end was connected to the thick pipe connecting window 9 on the front wall 6 of the island tank 1 located on the right side. Regarding the thick pipe connecting window 9 to which the thick pipe 46 is not connected, the blind plate 11 is installed before the island tank 1 is installed.
It is closed by.

A large amount of pachinko balls 30 collected from each pachinko machine 40 in each island 41 is conveyed upward to the island tank 1 by the belt conveyor 45, and the conveyor connecting portion 1
It falls from 0 to the inside of the island tank 1. The dropped pachinko ball 30 rolls on the inclined upper surface of the bottom wall 4 toward the left and right side walls 5, and the thin pipe connecting window 8 on the left and right sides
4 and is supplied to each pachinko machine stand 40 in the island 41, and also flows out into the thick pipe 46 from the thick pipe connecting window 9 of the rear wall 7 of the island tank 1 located on the left side. It is sent through the inside of the island tank 1 through the thick pipe connection window 9 of the front wall 6 of the island tank 1 located on the right side. Note that the pachinko ball recovery mechanism is not directly related to the present invention, and a description thereof will be omitted.

According to the island tank 1 of this embodiment, the box body 2
Since the sound deadening sheet 20 is attached to the inner surface of the sheet, the pachinko balls 30 falling from above collide with the vinyl chloride resin sheet 21 of the surface layer, and the collision sound and the bounce at the time of the collision cause the foamed resin sheet 22. , 23 and is absorbed.
Here, since the two layers of foamed resin sheets 22 and 23 have different foaming ratios, the absorption characteristics of collision sound and bound (for example, the natural frequency and the band width that exert the absorption capacity).
Differently, the absorption characteristics and the bounce are effectively absorbed by mutually complementing each other. In this way, it is possible to minimize the bounce and the collision sound transmitted to the box body 2 at the time of a collision, so that it is possible to suppress the generation of annoying noise. Further, the inner surface of the island tank 1 with which the pachinko balls 30 directly collide is covered with the abrasion-resistant vinyl chloride resin sheet 21, and therefore is less likely to be worn. Furthermore, since the island tank 1 uses the lightweight plywood 3 box body 2 in place of the conventional iron plate box body, the entire island tank 1 can be made lighter. The supporting force on the island 41 can be reduced.

The present invention is not limited to the above-described embodiment, but may be embodied with various modifications as appropriate without departing from the spirit of the invention as follows. (1) Pipe 4 for changing or connecting the shape of the box body 2
Increase or decrease the number of 4,46. (2) To attach the muffling sheet 20 only to the upper surface of the bottom wall 4 of the box body 2. (3) To be embodied in a container other than the island tank, which is suitable for receiving and storing therein falling objects such as spherical, flaky, lumpy, rod-shaped, and tubular falling from above.

[0015]

Since the container for receiving a falling object of the present invention is configured as described above, it has an excellent effect that it can absorb the collision sound and the bound of the falling object and suppress the generation of noise. Play.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of a main part of an island tank according to an embodiment of the present invention.

FIG. 2 is a perspective view of the island tank.

FIG. 3 is a perspective view of the island tank when in use.

FIG. 4 is an enlarged sectional view of a main part of a conventional island tank.

FIG. 5 is an enlarged cross-sectional view of a main part of another conventional island tank.

[Explanation of symbols]

 1 island tank 2 box body 20 muffling sheet 21 vinyl chloride resin sheet 22 foam resin sheet 23 foam resin sheet

Claims (3)

[Claims] 1. A container for receiving and storing a falling object such as a spherical, piece-like, lump-like, rod-like, or tube falling from above, which is attached to a box and an inner surface of the box. A sound deadening sheet, wherein the sound deadening sheet comprises a surface layer of a wear-resistant non-foamed polymer sheet, and at least one layer of a foamed polymer sheet for cushioning laminated on the back side of the non-foamed polymer sheet. A container for receiving falling objects, which is characterized in that 2. The container for receiving a falling object according to claim 1, wherein the cushioning foamed polymer sheet is at least two layers of foamed polymer sheets having different expansion ratios. 3. The container for receiving a falling object according to claim 2, wherein the foaming polymer sheet for cushioning is laminated on the back side in order of increasing foaming ratio.