JPS60125496A - Sound-insulating cover device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a soundproof cover device.

BACKGROUND ART Conventionally, portable generators used at various construction sites generate a lot of noise from their driving engines, and various soundproof cover devices for preventing the noise are known. However, the soundproofing effect is insufficient, and the volume is large, requiring installation space. It was also inconvenient to move or carry from one construction site to the next.

An object of the present invention is to solve these conventional problems and provide a soundproof cover device that has excellent soundproofing effects, is compact and lightweight, and is easy to carry and install.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

In Figures 1, 2, and 3, 1 is a portable generator, which is equipped with an internal combustion engine and is mainly used at electrical work, gas work, construction work, civil engineering work, etc. 2 is a soundproof cover device according to the present invention, and the soundproof cover device 2 surrounds the generator 1 from the top, bottom, left, right, front and back with a base 3, a surrounding wall 4 and a top cover 5. The purpose is to reduce noise.

The base 3 has a rectangular board shape with a predetermined thickness, and is entirely made of wood such as plywood, and the upper surface 11 has anti-vibration rubber 7...
・ is attached in a band shape at an appropriate position, and this vibration isolating rubber 7 ・・ is attached at an appropriate position.
・The generator 1 is placed as shown in FIG. Further, the base 3 has an exhaust passage 8 for guiding and discharging the exhaust gas from the internal combustion engine of the power generation fil to the outside, and a sound absorbing material 9 such as glass wool is attached to the inner surface of the exhaust passage 8. .

To explain more specifically, in FIGS. 2 and 3,
Three rectangular openings 10 are opened near the left edge of the upper surface 11, and one end of the discharge passage 8 opens upward, and three discharge passages 8 are formed in the partition wall 12.12. The openings 13 are formed independently on the right side of the figure. Note that the number of discharge passages can be freely increased or decreased by increasing or decreasing the number of plates of the partition wall 12, but it is determined from the viewpoint of supporting strength of the generator 1 and sound absorption/insulation properties.

Thus, the peripheral wall 4 surrounds the space above the base 3, and includes a front wall 14, a rear wall 15, and left and right side walls 16.
．． 17, and each wall 14, 15, 16.17 has a plywood 20 made by sandwiching a plastic plate 19 such as polypropylene between two aluminum plates 18, 18 as shown in FIG. A sound absorbing material 21 such as glass wool is attached to the front side and the back side.

As shown in Figures 5 and 6, the left and right side walls are 16° and 17°.
The two halves 16a, 16a or 17a, 17a are connected via a durable fabric strip 22 so that each can be bent inward from the center. This cloth-like strip 22 serves both as a hinge and as a sealing material (for preventing noise leakage).

In addition, the left and right side walls 16, 17 and the front wall 14 and rear wall 15 are similarly connected via a durable cloth strip 23 so as to be bendable, and this cloth strip 23 also functions as a hinge. It also serves as a sealant (to prevent noise leakage). From the rectangle in the unfolded state of use shown in Fig. 4 when viewed from above, the left and right side walls 1
6.17 is folded inward, passed through the process shown in Figure 5, and then folded flat as shown in Figure 6.

As shown in FIG. 2, it is desirable to attach an exhaust light plate 24 made of plywood 20 or a simple aluminum plate to the inner surface of the generator 1 in correspondence with the exhaust pipe outlet 25 of the internal combustion engine. An outlet section 26 is provided on the wall 15 (a second
(see figure), and is connected to the generator 1 by a cord 27. The outlet section 26 is connected to an external plug-in section and connected to a fan, which will be described later, using an external cord.

The upper lid 5 has an upper lid main body 28 and a lower horizontal plate portion 29 which is connected to the upper lid main body 28 in a suspended manner. A fan 31 is attached to the outer cylindrical body 31a of the fan 31, and a bellows type fan cover 32 is attached to the outer cylindrical body 31a of the fan 31.

An electric motor and fan blades 33 are provided inside the outer cylindrical body 31a of the fan 31, and suck air from above to below as shown by the arrow in FIG. Therefore, the outer cylindrical body 31a is
4 is formed.

Further, the upper cover 5 is attached to the upper opening of the surrounding wall 4 as shown in FIG. form. The plywood 2° is provided on the upper surface of the upper lid body 28, and a sound absorbing material 35 such as glass wool is provided on the lower surface. Upper lid body 28
On the contrary, the lower horizontal plate part 29 disposed parallel to the plywood 20 is provided on the lower surface, and the sound absorbing material 35 is provided on the upper surface. (It is also possible to simply use an aluminum plate or the like for the lower surface 20.) Reference numerals 36 and 36 denote suspension strap members that suspend the lower horizontal plate portion 29 from the upper lid body 28 so as to be parallel to each other. As shown in FIG. 3, it is connected to the front and rear edges of the lower horizontal plate portion 29. Then, as shown in FIG. 2, the lower horizontal plate portion 29
The distance B between the right edge and the right side wall 17 is set thick, the distance C between the left edge and the left side wall 16 is set relatively small,
Or set it to zero.

Further, as shown in FIGS. 2 and 3, elongated, round, or square holes 37 are provided at appropriate positions in the lower horizontal plate portion 29.

In this way, an intake passage 38 is formed through which outside air is introduced from the intake hole 34 into the cavity A as shown by arrow E or arrow F. That is, the suction passage 38 is mainly composed of the lower surface of the upper lid main body 28, the upper surface of the lower horizontal plate part 29, the interval B, the hole 37, etc.

Moreover, a sound absorbing material 35 is attached to the inner surface of the suction passage 38.

In this way, the soundproof cover device 2 includes the base 3 and the surrounding wall 4.
and a top cover 5, which can be assembled and used to surround the generator 1 as shown in Figures 1 and 2, and can be disassembled into three large pieces as shown in Figure 3 when not in use or when being moved. Moreover, since the intermediate surrounding wall 4 is foldable as shown in FIGS. 5 and 6, it can be compactly formed into a flat rectangular parallelepiped (
On the other hand, when the bellows-type fan cover 32 is folded, the top cover 5 also becomes a flat, substantially rectangular parallelepiped shape. 3 itself is originally shaped like a flat rectangular parallelepiped (disc), so it can be combined with this to form two large pieces of luggage as shown in Figure 6, which can be easily lifted and moved by a single worker with both hands. This has the advantage of not taking up much space for storage.

In addition, 39... indicates a tightening band equipped with a locking/unhooking tool,
As shown in FIG. 6, the folded surrounding wall 4 is tightened from the periphery to hold it in its folded state, and the base 3 and the top cover 5 are connected in a combined state. The connected band 39 also serves as a handle, making it even easier to carry.

To use the soundproof cover device 2, the base 3 is installed at a predetermined location, and the portable generator 1 is placed on the vibration-proof rubber 7 on the top surface of the base 3. At this time, the exhaust pipe outlet 25 of the internal combustion engine of the generator 1 is placed so as to correspond to the side where the upper opening 10 of the base plate 3 is located (the left side in the figure) as shown in FIG. Furthermore, the surrounding wall 4 is unfolded in the reverse direction of FIGS. 6-5-4, and placed on the base 3. At this time, the exhaust receiver makes the plate 24 correspond to the exhaust pipe outlet 25. Furthermore, the plug of the cord 27 of the generator 1 is inserted into the outlet section 26 embedded in the surrounding wall 4. Next, the generator 1 is started, and then the upper cover 5 is attached to the surrounding wall 4 so that the side with the large gap B is left and right opposite to the opening 10.

Furthermore, when the plug of the cord 40 of the fan 31 is inserted into the outlet part 26 from the outside and the fan 31 is rotated, outside air is sent from above through the intake hole 34 and the lower horizontal plate part 29 is rotated, as shown in FIG. When it hits, it changes direction and flows as shown by the arrow, and then it hits the inner surface of the right side wall 17 and changes its direction as shown by arrow E, cooling the internal combustion engine part of the generator 1 while flowing as shown by arrows F and G. It further changes its direction, flows into the discharge path 8 through the opening lO of the base plate 3, and is discharged in the horizontal direction as shown by the arrow {circle around (2)]. At this time, a part of the air in the suction passage 38 flows into the cavity A through the hole 37 and the gap C, and heats the internal combustion engine part of the generator I and the relatively high temperature parts of the cavity A. , after cooling, they are sequentially discharged as shown by arrows F, G, and H.

According to the illustrated embodiment of the present invention, the fan cover 32 reduces noise leakage upward, and since the fan cover 32 is of a bellows type, it can be conveniently shortened to a compact size as shown in FIG. 6 when not in use. It is. In addition, cloth-like strip 2
2.23... is used as a bendable connector, so
(Compared to energized metal hinges, etc.) Can wall 14.15.1
6.17 No gaps are generated, effectively preventing noise from leaking to the outside, and improving the soundproofing effect. Moreover, the surrounding wall 4 can be folded up extremely compactly as shown in FIG.

In addition, the plywood 2o made of the composite material explained in FIG.
Since it is used on the outer surface of the can walls 14, 15 and 16, 17, it will not rust and remain beautiful for a long period of time, it will be lightweight and convenient to carry, and it will especially block low frequency noise from the generator 1. It is very effective in doing so.

Further, by opening only the top cover 5 upward, fuel can be easily replenished to the internal combustion engine section of the generator 1 midway. In other words, with the conventionally known soundproof cover device consisting of a downwardly opening cover in which a top plate and a surrounding wall are integrally formed, fuel cannot be refilled midway unless the entire device is lifted and set aside. , the extremely inconvenient point has been improved.

Further, the hole portion 37 of the lower horizontal plate portion 29 is a hollow portion A.
This has the effect of effectively cooling down the parts of the body that become hot. Furthermore, the long exhaust path 8 on the bottom side lowers the exhaust temperature, effectively preventing negative effects on the outside and danger to the bodies of nearby people, and has the effect of reducing external leakage of noise. .

As described in detail above, the present invention is a base on which a portable generator is mounted, which has an exhaust passage for guiding the exhaust gas from the generator to the outside, and has a sound absorbing material attached to the inner surface of the exhaust passage. and a sound-absorbing material is attached to the inner surface surrounding the space above the base, a foldable surrounding wall, an intake hole having a fan, and an upper opening of the surrounding wall is covered. together with the base and the surrounding wall to form a cavity to surround the generator, further comprising an intake passage for introducing outside air into the cavity from the intake hole, and an inner surface of the intake passage. This is a soundproof cover device consisting of a top cover with sound-absorbing material attached to it, and the sound-absorbing material provides an outstanding soundproofing effect, making it possible to demonstrate its true value during nighttime construction work or work sites in residential areas. The walls can be folded up, making it extremely compact with a flat base and top lid, making it convenient and easy to carry, and in particular, it can be easily loaded into a light van along with a generator. Furthermore, the overall weight can be easily reduced, making it even easier to carry. In addition, when in use, the overall external dimensions are small, and there is an advantage that it does not take up much space.

Furthermore, when it is necessary to frequently move and install between construction sites, the intermediate surrounding wall can be folded and expanded, which makes it very convenient to carry out the work quickly.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a cross-sectional front view, Fig. 3 is an exploded perspective view, Fig. 4 is a cross-sectional plan view of the surrounding wall in an expanded state, and Fig. 5 is a cross-sectional front view. FIG. 6 is a partially sectional plan view showing the folding state in the middle of folding, FIG. 6 is a partially sectional plan view when the entire device is in a carrying state or stored state, and FIG. 7 is an enlarged sectional view of the main part. A... Vacancy, 1... Generator, 3... Foundation, 4...
... Surrounding wall body, 5 ... Top lid, 8 ... Discharge channel, 9.2
L 35...Sound absorbing material, 31...Fan, 34...
Intake hole, 38... Intake path. Patent applicant: Daisho Tsushin Construction Co., Ltd. Fig. 1 2 Fig. 2 Fig. 4 h 1'/a 1'/ 2'l ZU 1'/a Fig. 5 F-1 Fig. 6 Fig. 7

Claims (1)

[Scope of Claims] 1. A base on which a portable generator is mounted, which has an exhaust passage for guiding exhaust gas from the generator to the outside, and a sound absorbing material is attached to the inner surface of the exhaust passage. , which surrounds the four circumferences of the space above the base, has a sound-absorbing material attached to the inner surface, is provided with a foldable surrounding wall, an intake hole with a fan, and is covered with an upper opening of the surrounding wall. A cavity is formed together with the base and the surrounding wall to surround the generator, and further includes an intake passage for introducing outside air into the cavity from the intake hole, and an inner surface of the intake passage. A soundproof cover device comprising: a top cover to which a sound absorbing material is attached;