JPH029078Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the improvement of soundproof engine working machines such as generators.

(Prior art) Engine working machines such as generators are covered with a cover for soundproofing.
In No. 53-3302, a support rod is installed horizontally at a distance from the bottom rod of a rectangular loop-shaped frame, and the engine and the main body of the work equipment are supported on top of the support rod, which is covered with a cover divided into front and rear parts. There is. As another example, in Japanese Utility Model Application Publication No. 54-166524, the bottom, front, front, left, and upper covers are divided and assembled to form a cover and a frame.

(Problems to be solved by the invention) In the above conventional technology, Utility Model Application No. 53-3302 has a cover that is divided into two halves, front and back, and the cover half has a structure in which the box is divided into two. And, due to the structure of the frame, even the cover has to be a strong and rigid member when carried suspended. Therefore, the cover inevitably has to be made of a steel plate, which increases its weight, requires deep drawing due to its structure, making it troublesome to form, and is disadvantageous in terms of cost. Since it constitutes 1/2 of both sides, the single unit becomes large, which is disadvantageous in terms of assembly accuracy, and it is difficult to say that the ease of attachment and removal is necessarily good. 2 has to be attached and detached, which is disadvantageous in terms of maintenance.

On the other hand, in Utility Model Application Publication No. 54-166524, the six-sided covers are connected to each other to form a frame, so the connection of the covers is required to be similar to the connection of the frame, and the connection strength of the covers is of course high. Since the cover itself is required to have the same strength and rigidity as the frame components, steel plates have to be used, which increases the weight, is disadvantageous in terms of cost, and is troublesome to connect the cover. When attaching and removing the cover for maintenance work, since the cover also serves as a frame member, it is necessary to consider the procedure when removing the necessary parts, making the work difficult.

The present invention has been made to solve the above technical problems.

(Purpose of the invention) The purpose of the invention is to reduce the weight of the cover, thereby reducing the weight of a soundproof engine working machine, and to facilitate cover molding, which is advantageous in terms of cost. To provide a soundproof engine working machine which improves maintenance workability by easily attaching and detaching only necessary parts.

(Means for Solving the Problems) In order to solve the above-mentioned technical problems and also achieve the above-mentioned objectives, the present invention provides at least an upper horizontal A pair of frames each having a rod portion, a carrying handle attachment portion formed at the center of the horizontal rod portion, and two horizontal rod portions hanging down from both sides of the horizontal rod portion are attached to the lower part of the vertical rod portion. A carrying handle is placed horizontally between the upper parts of the frame, and the upper parts are connected to form a skeleton part that protects the outer periphery of the engine and work equipment and supports the weight. On the other hand, the front and rear open parts between the frame bodies are covered with front and rear divided covers, and the open parts of the frame bodies are covered with left and right covers.

(Effects of the above means) With the above configuration, the heavy objects such as the engine and work equipment are supported by a highly rigid frame consisting of a pair of frames, a bottom cover, and a carrying handle, and are used for support when carrying, and for stationary use. On the other hand, the cover is freed from load support, and the material of the cover can be made of synthetic resin, etc., and it can be made thinner, so the cover can be freely selected and the material can be selected freely. Significantly increases weight, reduces weight, increases design freedom and improves design, is advantageous in terms of cost, simplifies the coupling structure of the cover, allows the cover to be moved freely front to back, left or right. Since it is removable, only the necessary parts need to be removed during maintenance work, resulting in excellent workability.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Although the embodiments described below will be described as portable generators, it should be noted in advance that the working machine is arbitrary and is not limited to the embodiments.

Figure 1 is an exploded perspective view of the soundproof work machine, Figure 2 is a perspective view of only the frame combined, Figure 3 is a perspective view of the engine and work machine installed with the cover removed, and Figure 4 is a perspective view of the soundproof work machine. The figure is a perspective view showing the appearance of the work machine covered with a cover.

In FIG. 1, 2 and 3 are frames. frame body 2,
3 has a symmetrical shape and is gate-shaped. In the embodiment, each frame 2, 3 has a top rod portion 2a, 3a, two vertical rod portions 2b, 2c, 3b, 3c hanging down from both ends of the top rod portion 2a, 3a.
It is provided with bottom rod parts 2d and 3d that connect the lower ends of the vertical rod parts, and support protrusions 2e and 3e each having a recessed part so as to face each other inwardly are provided on the center part of the top rod parts 2a and 3a. The vertical rod portions 2b, 2c, 3b, and 3c are narrow at the top and wide at the middle, so that the upper half is trapezoidal, and the upper half of one of the vertical rod portions 2b, 3b is penetrated in the thickness direction. In addition to openings 2f, 3f, switch mounting parts 2g, etc., mounting bosses 2h, 3h, etc. are provided at necessary locations. The frames 2 and 3 described above are all integrally formed by die-casting, and have a closed frame shape as shown in the figure, so they have high strength and rigidity, and are made of aluminum alloy or the like.
We tried to make it lighter. In the embodiment, the frames 2 and 3 are die-cast from an aluminum alloy, but they may also be formed from a hard resin such as nylon or polypropylene.

Reference numeral 4 designates a bottom cover having a dish-like shape, and the bottom piece 4a is surrounded by circumferential pieces 4b to 4e that can be bent, stood up, or drawn, and mounting portions 4f are formed in necessary parts of the bottom piece and the circumferential pieces. The bottom cover 4 was obtained by press-molding a steel plate material.

5 is a carrying handle, which in the figure has downwardly open grooves 5a, 5b... formed over its entire length;
The lower cover 5e is formed from an extruded or drawn aluminum alloy material and has approximately the same length as the lower cover 5e for closing the grooves 5a and 5b.

In the above, the bottom rod 2 forming the lower part of the frames 2 and 3
Left and right pieces 4b, 4 of the bottom cover 4 between the insides of d and 3d
d, and connect the left and right frames 2, 3 and the left and right bottom covers 4 by passing screws through the mounting parts 2h, 3h, 4f, . In this connection, both ends 5c and 5d of the carrying handle 5 are inserted into the recesses of the aforementioned protrusions 2e and 3e of the frames 2 and 3 (although only one 3i is shown in the figure) of the lower cover 5e. Both ends are inserted together, and the carrying handle 5 is installed between the upper parts of the frames 2 and 3. As a result, a frame 1 was formed, and the assembled state of only the frame is shown in FIG.

Reference numeral 6 denotes a generator, which consists of an engine part 6a consisting of an engine main body and auxiliary equipment attached thereto, and a generator main body 6b connected to its crankcase, and is mounted on the bottom piece 4a of the bottom cover 4 mentioned above. The engine part 6a and the generator main body 6b are mounted and supported by the mounting part 4f and part of the mounting parts 2h, 3h, . . . of the frames 2, 3.

Reference numeral 7 denotes a fuel tank, which has a long shape from front to back, and is provided with a fuel filler port 7b that is opened and closed by a cap 7c on a portion of the upper surface 7a. The tank 7 has supporting protrusions 7d protruding from both ends thereof, and positioning protrusions 7e protruding from the nearer parts of both ends, and the tank 7 is supported by attaching and supporting the carrying handle 5 described above. Then, the protrusion 7d is locked to the locking parts 2j, 3j hanging below the top rims 2a, 3a of the frames 2, 3 mentioned above,
In addition, the tank 7 is positioned by the protrusion 7e that serves as a breather pipe, and the tank 7 is mounted and supported under the carrying handle 5 by the frames 2 and 3 while the frame 1 is assembled. Formed in one piece.

By the way, the embodiment shows a soundproof type generator, and the operation plate 8 is assembled to one side 2 of the frame body described above.
is equipped with a base piece 8a facing the side of the frame body and a side piece 8b provided on one side of the upper half of the base piece 8a, and an AC output outlet 8c and a DC output terminal 8d on the base piece 8a, and a display on the side piece 8b. A section 8e and a switch 8f are attached, so that the display section 8e can be viewed from the window 2f, and the switch 8f can be viewed from the protrusion 2f.
It is assembled and fastened to the frame 2 so that it appears from g.

By the way, the groove 5 of the carrying handle 5 mentioned above
A breather pipe 11 is housed in a and 5b, and is held by a lower cover 5e so as not to fall off, and leg pieces 12 made of rubber or the like are attached to the four corners of the bottom cover 4.

The generator is configured as described above, and the state with the cover removed is shown in FIG.

The generator is covered with a cover, including left and right covers 9 and 10, and front and rear covers 13 and 14.
Consisting of

In the embodiment, the left cover 9 includes windows 9a and 9b,
Mounting holes 9c are provided at the four corners, and these are fastened to the mounting portions 2h' at the four corners of the frame body 2 with screws 15, and the windows 9a,
The electrical outlet 8c and meters 8d are exposed from 9b.

In the embodiment, the left cover 10 includes an open recess 10a in the lower half for housing the recoil starter,
The cover 10 has four corner mounting holes 10b connected to four corner mounting portions 3h' of the frame 3 with screws 16.

The front cover 13 has an approximately inverted L-shaped side surface, has an opening 13a at the corner for injecting oil into the engine, is closed by a cap 13b, and has mounting portions 13d, 13d provided at the lower end. Attachment portions 13e, 13e provided at both ends of the intermediate portion are fastened to the vertical rod portions 2b, 3b on this side of the frames 2, 3 and the piece 4c of the bottom cover 4 with screws 17. In the embodiment, a slit 13c for cooling, heat radiation, and ventilation is provided in the lower half.

The rear cover 14 has a symmetrical shape, and although only the attachment portion 14e at the lower end is shown in the figure, the other attachment portions are similarly provided, and the cover 14 is fastened between the vertical rod portions 2c and 3c with screws 18. However, there is a slit 1 on this side.
4c and a ventilation section consisting of a net-like section 14d.

The above covers 9, 10, 13, 14 surround the entire circumference for soundproofing, and the above covers 9, 10, 13,
14 may be formed of a thin synthetic resin material since it does not support the load of the engine or working machine.

(Effects of the invention) As is clear from the above, according to the invention, the engine and work equipment are supported by a highly rigid frame that is open in the front, back, left and right sides, has excellent strength, and is easy to carry, so the cover can carry the load. There is no need for support, and the use of synthetic resin improves soundproofing while significantly reducing weight. The use of synthetic resin increases the degree of freedom in design and improves design. Even if it is formed from a temporary steel plate, it can be made thinner, and in combination with the four-periphery divided cover, the formability is improved.
In the case of synthetic resin, it is easier to mold and is advantageous in terms of cost; the cover does not support load, which simplifies the structure for attaching and detaching; and the cover can be attached and detached individually on all four sides, which is necessary for maintenance work. It has many advantages, such as being easy to maintain and only the parts that need to be removed can be attached and detached.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an exploded perspective view of an engine working machine, Fig. 2 is a perspective view of only the frame assembled, and Fig. 3 is a state in which the cover is not attached. FIG. 4 is a perspective view showing an example of the final shape of the engine working machine. In the drawings, 1 is a frame, 2 and 3 are frame bodies, 4 is a bottom cover, 5 is a carrying handle, 6 is an engine working machine, and 9, 10, 13, and 14 are covers.

Claims (1)

[Scope of utility model registration request] A support cover on which the engine and the work equipment are mounted has at least an upper horizontal rod portion at both ends thereof, and a carrying handle attachment portion formed in the center of the horizontal rod portion;
A pair of frames having two vertical rod portions hanging from both ends of the horizontal rod portion are joined at the lower part of the vertical rod portion,
A carrying handle is placed horizontally between the upper parts of the frame body, and the upper parts are connected to form a skeleton part that protects the outer periphery of the engine and work equipment and supports the weight.
This soundproof engine working machine is characterized in that the front and rear openings between the frame bodies are covered with front and rear split covers with respect to this frame part, and the open parts of the frame body are covered with left and right covers.