JPH0941988A - Soundproof case structure of engine driven generating set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such a case being oblivious of carrying working equipment from occuring and simultaneously to improve in carriability of the working equipment, and to facilitate a job for maintenance in a soundproof case. SOLUTION: In a welder 2, an air cleaner 10, a caburetor 8, an engine 4 and a generator 6 are all installed in a lower part in a soundproof case 18 in order from the front side. A fuel tank 12 is installed in a nearly central part in the longitudinal direction of an upper part in this soundproof case 18, while an exhaust muffler 16 in the rear of this fuel tank 12 and also in an upper part of the generator 6 respectively. A storage box 20 is installed in an empty space part in the soundproof case 18 in front of the fuel tank 12 and in an upper part of the air cleaner 10 free of detachment. Both inner and outer surface of this storage box 20 are covered with a sound insulating material, while a door 26 for opening or closing an opening part 20a of the storage box 20 and taking out this box 21 is installed in an upper wall 18u of the soundproof case 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof case structure for an engine generator.

[0002]

2. Description of the Related Art Conventionally, a soundproof type engine generator which generates electric power by mechanical power of an engine has been known, and this soundproof engine generator is widely used as an engine welder, engine cleaner and the like. Generally, this type of power generation device includes an engine, a generator that generates power by mechanical power of the engine, an exhaust muffler that discharges exhaust gas from the engine, and a fuel tank that stores fuel to be supplied to the engine. , These are housed in a soundproof case.

Usually, an engine and a generator are arranged in the lower part of the soundproof case, and only a fuel tank or a fuel tank and an exhaust muffler are installed in the upper part. A control panel is installed on the upper outer surface of the front wall of the soundproof case.

[0004]

By the way, for example, when the power generator is a welding machine, the welding work requires work supplies such as a welding rod, a welding mask, and a clip in addition to the welding machine. Therefore, conventionally, in order to perform welding work,
The worker had to carry the welder and work supplies to the site separately. Therefore, there is an inconvenience of noticing that he / she has forgotten his / her work supplies after arriving at the site and losing the work supplies.

Further, in the conventional welding machine, the maintenance of the carburetor and the like in the soundproof case is carried out, for example, by a maintenance door provided on the side wall of the soundproof case. Regarding, it was difficult from the maintenance door on the side wall of the soundproof case. Therefore, there has been a demand for a welding machine that can easily perform maintenance on electrical components such as a harness on the back surface of the control panel.

Incidentally, these problems are not limited to the above-mentioned welding machine, and may occur in other engine generators such as a washing machine without any change.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to prevent forgetting or loss of work implements and improve the transportability of the work implements.
Moreover, it is an object of the present invention to provide a soundproof case structure for an engine generator, which enables easy maintenance inside the soundproof case.

[0008]

The present invention has the following arrangement to achieve the above object. That is, the present invention
An engine, a generator that receives mechanical power of the engine to generate electric power, an air cleaner that purifies air supplied to the engine, a fuel tank that stores fuel supplied to the engine, and an exhaust pipe for the engine. In an engine generator including an exhaust muffler connected via an engine, an air cleaner, a fuel tank, and a soundproof case containing the exhaust muffler, a lower part in the soundproof case is sequentially arranged from the front side in a device side view. An air cleaner, the engine and the generator are provided,
The fuel tank is arranged at a substantially central portion in the front-rear direction in the upper part of the soundproof case, and is behind the fuel tank and above the generator in a side view of the device.
In the space inside the soundproof case formed with the exhaust muffler and in front of the fuel tank and above the air cleaner in a side view of the apparatus, a storage box opening upward is provided on the soundproof case. The storage box is detachably attached to the wall, and each of the inner surface and the outer surface of the storage box is
In a soundproof case structure of an engine generator, which is covered with a soundproof material, and a door for opening and closing the opening of the storage box and taking out the storage box is provided on the upper wall of the soundproof case. is there.

According to the present invention, since the storage box is disposed in the space inside the soundproof case formed in front of the fuel tank and above the air cleaner, for example, when the apparatus is a welding machine. Work items such as welding rods can be stored in a storage box. Therefore, since the device and the work article can be carried together, the work article can be prevented from being forgotten or lost and the work article can be easily transported. Further, since the opening of the storage box is opened and closed by the door, the storage property is good.

Further, since the inner surface and the outer surface of the storage box are covered with a soundproof material, the same soundproof effect as that of a normal soundproof type engine generator can be obtained. In addition, vibration noise of the storage box due to engine vibration is also reduced.

Furthermore, since the storage box can be removed from the soundproof case by opening the door, the user can easily perform maintenance on the air cleaner, the engine ignition plug, and the like arranged below the storage box. In addition, maintenance of the electrical components on the back side of the control panel, which is usually installed above the front wall of the soundproof case, becomes easy.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the welding machine according to the present embodiment, in which a part of a side wall is cut away to look inside. FIG. 2 is a plan view of the welding machine according to the present embodiment, showing a state in which the storage box is removed. FIG. 3A is a side view of the welding machine around the storage box according to the present embodiment,
The same (b) is a perspective view of a storage box. FIG. 4 is a sectional view showing the structure around the storage box according to the present embodiment. FIG. 5A is a plan view of the welding machine of the present embodiment, and FIG. 5B is a plan view of another embodiment of the door according to the present invention.

As shown in FIG. 1, a welding machine (an example of an engine generator) 2 of the present embodiment includes an engine 4 and a generator 6 that receives the mechanical power of the engine 4 to generate electric power.
And a carburetor 8 for supplying the air-fuel mixture to the engine 4, and an air cleaner 1 for purifying the air supplied to the carburetor 8.
0, a fuel tank 12 containing fuel supplied to the carburetor 8, an exhaust muffler 16 connected to the engine 4 via an exhaust pipe 14, and the engine 4, the carburetor 8,
Air cleaner 10, fuel tank 12, and exhaust muffler 1
6 is included.

The soundproof case 18 has a substantially rectangular parallelepiped outer shape, is composed of a plurality of plate members, and is called a soundproof cover unit. As shown in FIG. 1, the recess 18 at the upper outer surface of the front wall 18 f of the soundproof case 18
A control panel 28 including a connection terminal to which a lead wire for a welding rod is connected and various switches is provided at f1. An electrical component 30 such as a harness is provided on the back side of the control panel 28. Further, the welding machine 2 is provided at a substantially central position of the upper wall 18u of the soundproof case 18.
A ring 32 that is used when moving up and down by a crane or the like is projected.

As shown in FIG. 1, an air cleaner 10, a carburetor 8, an engine 4, and a generator 6 are arranged in this order from the front side in the lower part of the soundproof case 18 as seen from the side of the apparatus. On the other hand, the fuel tank 12 is disposed in the substantially central portion in the front-rear direction in the upper portion of the soundproof case 18, and the exhaust muffler 16 is disposed behind the fuel tank 12 and above the generator 6 in a side view of the device. To be done.

The air cleaner 10, as shown in FIG.
The soundproof case 18 communicates with an outside air intake portion 34 arranged at a lower portion of the left side wall 18a of the soundproof case 18 through an intake pipe 36.
External air is supplied. Further, at the front end of the engine 4, a governor 38 for adjusting the engine speed is provided as shown in FIG. As shown in FIG. 1, on the upper wall of the fuel tank 12, a fuel filler portion 12a projects upward from the upper wall 18u of the soundproof case 18 at a position near the rear side of the ring 32. A cap 12b is detachably attached to the upper end opening of 12a. Also,
The exhaust muffler 16 is housed in the soundproof case 40. Exhaust gas from the exhaust muffler 16 is discharged from a plurality of exhaust ports (not shown) formed in the rear wall 18r of the soundproof case 18, for example.

In the internal structure of the soundproof case 18 laid out as described above, as shown in FIG. 1, a space is formed in front of the fuel tank 12 and above the air cleaner 10 in a side view of the apparatus. In the present embodiment, by utilizing the space inside the soundproof case 18, a storage box 20 that opens upward and can store the work implement A is detachably disposed on the upper wall 18u of the soundproof case 18. To do.

The storage box 20, as shown in FIG.
The soundproof case 18 is accommodated in the space inside the soundproof case 18 through an opening 42 provided in an upper wall 18u of the soundproof case 18. The opening 42 is wider in the front portion of the upper wall 18u than the ring 32, and has a substantially rectangular shape that is long in the left-right direction in a plan view of the device. The rear edge of the opening 42 is formed in the vicinity of the front end of the fuel tank 12 in a plan view of the device, while the front edge of the opening 42 is substantially at the same position as the front end of the air cleaner 10. Each of the left and right edges of the opening 42 reaches near the inside of the left side wall 18a and the right side wall 18b of the soundproof case 18. Further, around the opening 42, a step portion 18u1 having a substantially rectangular shape in a plan view of the device is formed in which the upper wall 18u of the soundproof case 18 is slightly lowered.

As shown in FIG. 3 (b), the storage box 20 has a substantially box-like shape having a front wall, a rear wall, left and right side walls, and a bottom wall, and is open upward. A flange portion 20b protruding inward is formed. This collar portion 20b is
As shown in FIG. 4, the stepped portion 18 around the opening 42.
The size is such that it is just fitted and supported by u1. The soundproof material 22 and the soundproof material 24 are coated on the inner surface and the outer surface of the storage box 20, respectively. That is, the collar portion 2
All parts except the outer peripheral end surface of 0b are covered with soundproof materials 22 and 24. The depth of the stepped portion 18u1 of the soundproof case 18 is set to be substantially the same as the combined thickness of the collar portion 20b, the soundproof material 22 and the soundproof material 24, and the storage box 2
With 0 set in the opening 42, the upper surface of the soundproof material 22 above the flange 20a and the upper surface of the upper wall 18u of the soundproof case 18 are substantially flush with each other. The soundproof material 44 (see FIG. 4) is also attached to the inner surface of the soundproof case 18 on almost all surfaces except the intake port and the exhaust port (not shown) at the left end of the outside air intake portion 34.

As shown in FIG. 4, the upper wall 18u of the soundproof case 18 is provided with a door 26 for opening and closing the opening 20a of the storage box 20 and taking out the storage box 20 from the soundproof case 18. The door 26 is a plate-like member having an outer shape that is substantially the same as the outer shape of the collar portion 20b of the storage box 20. The door 26 is attached to the upper wall 18u of the soundproof case 18 via the hinge means 46 at the rear end thereof so as to be openable and closable, and substantially hides the storage box 20 in the closed state. Further, as shown in FIG. 5 (a), at the substantially central position in the left-right direction at the front end portion of the door 26,
A substantially semicircular recess 26a is provided in a plan view of the device, and the recess 26a is provided with a lock lever 26b capable of engaging the closed door 26 with the upper wall 18u of the soundproof case 18. The door according to the present invention is not limited to the door 26 shown in Fig. 5 (a), and for example, the door 26A shown in Fig. 5 (b).
A transparent plate 26A such as an acrylic plate that is partially
It may be provided with 1. In the case of this door 26A, the door 2
Even when 6A is closed, the operator can visually check the inside of the soundproof case 18 through the transparent plate member 26A1.

According to the welding machine 2 of the present embodiment configured as described above, since the work implement A can be stored in the storage box 20, the welder 2 and the work implement A can be carried together. it can. Therefore, it is possible to prevent the work implement A from being forgotten or lost, and the transportability of the work implement A is improved. Further, the opening 20a of the storage box 20 has a door 26
Since it is opened and closed by (26A), the storability and the appearance of the welding machine 2 are good. Further, as shown in FIG. 3A, when the door 26 (26A) is opened and the work article A is taken in and out, the opened door 26 (26A) may be supported on the upper end of the ring 32. Because you can, open the door 26 (2
No special measures are required to hold 6A). In the case of the door 26A shown in FIG. 5B, it is possible to confirm whether or not the work article A is stored in the storage box 20, so that the work article A is more reliably prevented from being forgotten. it can.

Further, since the soundproof materials 22 and 24 are coated on the inner surface and the outer surface of the storage box 20, the same soundproof effect as that of a normal soundproof type engine generator can be obtained. At the same time, the soundproof materials 22 and 24 reduce the vibration noise of the storage box 20 due to the mechanical vibration of the engine 4.

Further, according to this embodiment, the door 26 (2
6A) can be opened to remove the storage box 20 from the soundproof case 18, so that the user can fix the storage box 20 to the air cleaner 10, the carburetor 8 and the cylinder head 4a of the engine 4 arranged below the storage box 20 as shown in FIG. Further, maintenance of the spark plug 4a1, the governor 38 and the like can be easily performed. Further, the user can easily remove the storage box 20 and easily perform maintenance of the electrical component 30 on the back surface of the control panel 28.

The present embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment. For example, the present invention can be applied to a washing machine other than a welding machine and a soundproof case of a general soundproof type engine generator.

[0025]

As described above, according to the present invention, it is possible to prevent forgetting or loss of a work article, improve the transportability of the work article, and store the stored items and the appearance of the apparatus. Good. Further, the soundproof material coated on the inner surface and the outer surface of the storage box can provide the same soundproof effect as that of a normal soundproof type engine generator, and can reduce vibration noise of the storage box. Further, the user can easily perform maintenance especially on the back surface of the control panel inside the soundproof case.

[Brief description of drawings]

FIG. 1 is a side view of a welding machine according to the present embodiment, in which a part of a side wall is cut away to look inside.

FIG. 2 is a plan view of the welding machine according to the present embodiment with the storage box removed.

3A is a side view of the storage box and its periphery according to the present embodiment, and FIG. 3B is a perspective view of the storage box.

FIG. 4 is a cross-sectional view showing a structure around a storage box according to the present embodiment.

5A is a plan view of the welding machine according to the present embodiment, and FIG.
FIG. 6 is a plan view of another embodiment of the door according to the present invention.

[Explanation of symbols]

 2 Welding machine (an example of engine generator) 4 Engine 6 Generator 8 Carburettor 10 Air cleaner 12 Fuel tank 14 Exhaust pipe 16 Exhaust muffler 18 Soundproof case 18u Upper wall 20 Storage box 20a Opening 22 Soundproofing material 24 Soundproofing material 26 Door

Claims (1)

[Claims] 1. An engine, a generator that receives the mechanical power of the engine to generate electric power, an air cleaner that purifies the air supplied to the engine, and a fuel tank containing the fuel supplied to the engine. In an engine generator comprising an exhaust muffler connected to the engine via an exhaust pipe, and a soundproof case containing the engine, an air cleaner, a fuel tank and an exhaust muffler, a lower part of the soundproof case has a device side view. The air cleaner, the engine, and the generator are provided in this order from the front side, and the fuel tank is disposed substantially in the center in the front-rear direction in the upper part of the soundproof case, and the rear side of the fuel tank is seen in a side view of the device. And above the generator,
The exhaust muffler is disposed, and in a space portion inside the soundproof case formed in front of the fuel tank and above the air cleaner in a side view of the device,
A storage box opened upward is detachably disposed on the upper wall of the soundproof case, and an inner surface and an outer surface of the storage box are covered with a soundproof material. A soundproof case structure for an engine generator, wherein a door for opening and closing the opening of the storage box and taking out the storage box is provided.