JP3758254B2 - Sound absorption attachment of vending machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sound absorbing attachment of a vending machine for reducing noise generated inside a vending machine installed on a floor surface from leaking outward through a base.
[0002]
[Prior art]
According to the device described in Japanese Utility Model Laid-Open No. 2-55386, it is possible to take a shape sandwiched between vertical side plates inside the vending machine and store the goods between them, and carry out the stored goods based on a command. When taking a configuration in which the product shelf is arranged, the side plate vibrates and generates noise when the product is transported. Therefore, the noise of the side plate can be attenuated by attaching a buffer member in contact with the side plate. In general, in a vending machine, as will be described in detail later with reference to FIG. 5, a heat insulating material is filled between an inner box and an outer box constituting the inner box to surround the inside of the box. Therefore, some sound insulation effect can be provided simultaneously with the heat insulation effect.
[0003]
In the sectional side view of the conventional general vending machine shown in FIG. 5, the inside of the inner door 14 is filled with a heat insulating material 13 between the outer box 11 and the inner box 12 each having an opening on the left side, and the opening is closed. Is filled with a heat insulating material that is not labeled. The front door 15 is provided with a product display section, a product selection key, and the like. Four product storage shelves 19 are formed in parallel in the front-rear direction (left-right direction in the figure) as a space extending in the vertical direction while being bent, and cylindrical products 10 are stacked and stored with the axis line horizontal. At the same time, every time it is paid out from the lower side, it is sent downward. At the bottom of each product storage shelf 19, a payout mechanism 27 for paying out the product 10 based on a sales command is provided. The dispensed product 10 falls along the chute 16, pushes open the flap door 17 connected to the lower side of the inner door 14, and is sent to the take-out port 18. In order to bring the inside of the vending machine to an appropriate temperature, a selectively operated cooler 23, a heater 24 as a heater, an air circulation fan 28, and a temperature control device (not shown) are installed. Furthermore, there is a machine room 29 at the bottom of the vending machine, where a refrigeration compressor 21, a condenser 22 and an air cooling fan 27 are installed. The base 7 that is the bottom plate of the vending machine is provided with level adjusting screws 8 at the four corners of the lower surface thereof.
[0004]
[Problems to be solved by the invention]
As described above, in particular, according to the device described in Japanese Utility Model Laid-Open No. 2-55386, a shock absorbing member is in contact with the side plate against vibration and noise generated by the side plate when the product is conveyed in a specific product shelf. In addition, with conventional vending machines, heat insulation filled between the inner box and the outer box and the inside of the inner door is filled against leakage of noise to the outside. It can be somewhat suppressed by the heat insulating material. However, the vending machine includes a machine room at the bottom, that is, above the base, in which a refrigeration compressor, a condenser, a fan, and the like are stored. Therefore, it is necessary to reduce the leakage of vibration and noise from the rotating equipment in the machine room to the outside through the base. In addition, since rotating devices are often given some consideration for vibration suppression and sound absorption on their gears, bearings, and foundations of installation, new sound absorption measures are more serious than full-scale measures. However, it is practical to use a shape that can be attached if necessary, that is, a removable attachment.
[0005]
The problem to be solved by the present invention is to solve the above problems of the prior art and reduce the leakage of noise generated inside the floor-mounted vending machine through the base to the outside. The purpose is to provide sound absorbing attachments for vending machines.
[0006]
[Means for Solving the Problems]
The present invention is a sound absorbing attachment for reducing the noise generated inside the floor-mounted vending machine from leaking outside through the base, and is provided avoiding the level adjusting screw on the lower surface of the base. A flat plate-shaped main member having a sound-absorbing function having a shape and dimensions corresponding to the outline of the base; a folded plate-shaped member, a U-shaped holding portion for holding the sound-absorbing band plate, and attaching the whole to the base And a U-shaped sub-member attached from the front side of the base to both side surfaces in a form covering the joint between the main member and the base. It is.
[0007]
Further, according to the present invention, the main member has a plate-like sound absorbing member having a shape and size corresponding to the outline of the base, avoiding the level adjusting screw, and a large number of holes only on the base side so as to be covered on the entire outer periphery thereof. It is preferable to use a structure including an opened plastic film .
[0008]
Therefore, in the present invention, the noise generated inside the floor-mounted vending machine leaks downward through the base by the main member, and the side member leaks through the base by the sub member to reduce and absorb the noise. can do.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As an embodiment of the present invention, an example (sound absorbing attachment) will be described below with reference to the drawings. FIG. 1 is a perspective view of a vending machine provided with an embodiment. In FIG. 1, the base 7 of the vending machine 9 is provided with a plate-like main member 1 for sound absorption on the lower surface (see FIG. 2), which is not shown here, and covers the joint. Each of the sub-members 4A and 4B in the form of a sound absorbing band is screwed to the base 7 so as to form a U-shape from the front side of the base 7 to both side surfaces (detailed structure). Will be described later).
[0010]
FIG. 2 is a side view of a vending machine provided with an embodiment. With reference to this, the main member 1 avoids level adjusting screws 8 provided at the four corners of the lower surface of the base 7. Take shape (see FIG. 3). Each sub member 4A, 4B is provided only on the front and left and right sides as shown by the solid line and the alternate long and short dash line, and is not provided on the back, but this does not interfere with the wall on the back side during installation. It is to make it. Therefore, the noise generated inside the floor-mounted vending machine 9 leaks downward through the base 8 by the main member 1 and leaks to the left and right sides through the base 8 by the sub-members 4A, 4A, 4B can be absorbed and reduced, respectively.
[0011]
The main member 1 and the sub members 4A and 4B will be described in detail. FIG. 3 is a perspective view of the main member, and FIG. 4 is a perspective view of the sub member. In FIG. 3, the main member 1 has as its main part a sound-absorbing plate 2 having a shape and dimensions corresponding to the outline of the base 7, with the four corners cut away in an arc shape avoiding the level adjusting screw 8 (see FIG. 2). The entire outer periphery is covered with a plastic film 3 such as vinyl chloride. The plastic film 3 has a large number of holes 3a only on the base 7 side (upper surface in the figure). Here, the sound-absorbing flat plate 2 is a rectangular flat plate made of a sound-absorbing material made of a porous material (open cell material) such as glass wool, felt, or foamed polystyrene. As described above, the four corners are cut out in an arc shape and the level adjusting screw 8 is provided. The shape to avoid is taken (see FIG. 2). Noise generated inside the vending machine is absorbed, that is, absorbed, when it enters the sound-absorbing plate 2 from above and travels inside. This noise absorption, that is, sound absorption, is due to the loss of energy mainly due to viscosity and heat conduction while the sound waves are repeatedly reflected and entered at the interface between the bubbles and the material itself. The plastic film 3 is a so-called surface treatment member for mechanically protecting the sound-absorbing flat plate 2. Since the front surface and each side surface are surrounded by the sub members 4A and 4B as will be described later, the plastic film 3 is coated or pasted. Etc. have a simple structure. A large number of holes 3 a formed in the upper surface of the plastic film 3 are openings for introducing and absorbing noise into the sound absorbing plate 2.
[0012]
In FIG. 4, the sub member 4 includes the sound absorbing band plate 5 and the frame 6 although the sub members 4 </ b> A and 4 </ b> B for the front surface and the side surfaces are commonly displayed. The sound absorbing strip 5 is a strip-shaped member made of a sound absorbing material of a porous material (open cell material). The frame 6 is a bent plate-like member having a tongue shape having two U-shaped holding portions 6u for holding the sound absorbing band plate 5 and a screw insertion slit 6w for attaching the whole to the base 7. The mounting portion 6v. Instead of configuring the sub-member 4 in an integral U-shape that surrounds the outer periphery of the main member 1 from the front side and each side surface, the three sub-units for the front side and the left and right side surfaces are thus formed. The reason for adopting the format is to simplify the structure of itself, to facilitate standardization, and to reduce costs.
[0013]
【The invention's effect】
According to the present invention, the following effects can be expected.
(1) The noise generated inside the floor-mounted vending machine leaks downward through the base by the main member, and leaks through the base to the front and left and right sides by the secondary member. Therefore, it is possible to prevent noise from leaking outside through the base and giving an unpleasant feeling to people or customers who pass nearby, which leads to an increase in sales of the vending machine.
[0014]
(2) Since the structure is simple as a whole, it is easy to manufacture and the cost can be reduced. In particular, when the sub member is divided into three units for the front and left and right sides, it is easy to standardize. Therefore, the cost can be further reduced as compared with the U-shaped integrated type.
(3) Existing vending machines can be added according to noise conditions, and can be omitted if noise does not matter in the case of new installations. Improvement and cost reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a vending machine provided with an embodiment (sound absorbing attachment) according to the present invention. FIG. 2 is a side view of the vending machine provided with the embodiment. FIG. 3 is a perspective view of a main member in the embodiment. FIG. 4 is a perspective view of an auxiliary member in the embodiment. FIG. 5 is a side sectional view of a conventional general vending machine.
1 Main member 2 Sound absorbing flat plate 3 Plastic film 3a Hole 4 Sub member 4A, 4B Sub member (for front and side)
5 Sound absorbing band plate 6 Frame 6u Holding part 6v Mounting part 6w Slit 7 Base 8 Level adjusting screw 9 Vending machine (conventional)

Claims (2)

It is a sound absorption attachment to reduce the noise generated inside the floor-mounted vending machine from leaking outside through the base, and is installed on the bottom of the base avoiding the level adjustment screw. A flat plate-shaped main member having a sound-absorbing function with a shape and size corresponding to the contour; a folded plate-shaped member, a U-shaped holding portion for holding the sound-absorbing belt plate, and a tongue-like shape for attaching the whole to the base And a U-shaped sub-member attached from the front side of the base to each side of both sides so as to cover the joint between the main member and the base. Sound absorption attachment for vending machines. The sound absorbing attachment according to claim 1, wherein the main member includes a flat plate sound absorbing member having a shape and size corresponding to the outline of the base by avoiding the level adjusting screw, and a large number of main members only on the base side covered by the entire outer periphery thereof. A sound-absorbing attachment for a vending machine, characterized by comprising a plastic film with holes.

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