JPH0121399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a frame structure of a portable engine working machine such as a portable miniaturized generator.

(Prior Art) Utility Model Application No. 53-3302 has been proposed as a frame structure for this type of engine working machine. In this technology, the main frame of the frame is made into a continuous rectangular frame with a narrow width, and two support members are placed horizontally apart from each other on the elongated bottom frame of the main frame, and the engine and work equipment are mounted on the support parts. It is configured such that the cover is fixed in place and the two-piece cover is connected to the main frame from both sides.

(Problems to be Solved by the Invention) In this conventional technology, the width of the main frame is the same as that of the carrying handle provided on the top frame of the main frame, and since the carrying handle is meant to be held and carried, it is difficult to grasp it. The support member is placed horizontally on the main frame bottom frame of such width, and heavy objects such as the engine and work equipment are placed and supported on this, making it difficult to stably support the engine. This is inconvenient because there are restrictions on the weight of the working machine, and the weight of the engine and working machine is supported by the thin main frame, which makes it difficult to carry because the balance is poor when carrying it by gripping the handle.

The present invention has been made to solve the above-mentioned technical problems in the frame structure of a portable engine working machine.

(Objective of the invention) The object of the present invention is to have a simple structure, high rigidity,
It has high strength and reliably supports the engine and work equipment.
To provide a portable engine working machine that can perform operations stably and has good balance when carried.

(Means for Solving the Problems) In order to solve the above-mentioned technical problems and also achieve the above objects, the present invention provides a horizontal rod having a carrying handle attachment part in the center, and A pair of integrally molded frames are formed, consisting of two vertical rods hanging from both ends and a bottom rod with a bottom cover attachment part that connects the bottoms of these two vertical rods. A frame was formed by connecting the upper center carrying handle attachment parts of the frame body with a carrying handle, and connecting the bottom cover attachment parts with both ends of the bottom cover. The engine and working equipment are mounted and supported on the bottom cover and housed in the space surrounded by the frame.

(Effect of the above means) According to the above means, the upper central parts of the pair of integrally molded frames are connected by the carrying handle, and the bottom parts are connected by the bottom cover, so the structure is simple, strong, and portable. A frame structure with excellent time balance can be obtained.

(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.

FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view of only the frame in a connected state, FIG. 3 is a perspective view of the engine and work equipment assembled, and FIG. 4 is a perspective view showing the final shape.

In FIG. 1, numerals 2 and 3 are frames. Frame 2,
3 has a symmetrical shape and forms a closed frame shape. In the embodiment, each frame 2, 3 has an upper horizontal rod portion 2a, 3a, and two vertical rod portions 2b, 2c, 3 hanging down from both ends of the upper horizontal rod portion 2a, 3a.
b, 3c, bottom rod part 2 connecting the lower ends of the vertical rod parts
Support protrusions 2e, 3e, which are carrying handle attachment parts, are provided with recesses on the central parts of the upper horizontal rods 2a, 3a so as to face each other inwardly.
Equipped with. And vertical rod parts 2b, 2c, 3b, 3c
The upper half has a trapezoidal shape, narrow at the top and wide at the middle, and the upper half of one of the vertical rods 2b and 3b has openings 2f and 3f penetrating in the thickness direction and mounting switches. A section 2g etc. are provided.

A plurality of attachment boss portions 2h, 3h, etc., which form attachment portions for various members to be described later and attachment portions for the bottom cover 4, are provided at necessary portions of the frames 2, 3. The frames 2 and 3 described above are all integrally molded by die-casting, and as shown in the figure, they have a closed frame shape, so they have high strength and rigidity, and are made of aluminum alloy or the like to reduce weight. 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.

Frame 1 was thus obtained, and the assembled state of only the frame is shown in FIG.

Next, to further explain the example in detail when implementing it on a portable generator, 6 in the figure is an engine working machine, specifically the generator in this example, and the engine body and auxiliary equipment attached to it are engine part 6a
It consists of a generator body 6b connected to the crankcase of this generator, placed on the bottom piece 4a of the bottom cover 4 mentioned above, and a mounting part 4f, and the mounting part 2 of the frames 2 and 3.
The engine section 6a and the generator main body 6b are mounted and supported by parts of h, 3h, . . . .

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 which serve as breather pipes protruding from the parts near both ends.
The tank 7 is supported by the locking parts 2j, 3j hanging below the horizontal rods 2a, 3a of the frames 2, 3, when the carrying handle 5 described above is attached and supported.
The protrusion 7d is engaged with the protrusion 7d, and the protrusion 7e is used for positioning.The tank 7 is mounted and supported under the carrying handle 5 by the frames 2 and 3 while the frame 1 is assembled. Each part was integrally formed from synthetic resin.

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.
The base piece 8a has a base piece 8a facing the side surface of the frame body, and a side piece 8b provided on one side of the upper half thereof, and the base piece 8a has an AC output outlet 8c, meters 8d, and a side piece 8b.
A display section 8e and a switch 8f are attached to the display section 8e and the switch 8f is attached to the opening section 2f, and the switch 8f is attached to the protrusion section 2f.
Incorporate and fasten the left cover 9 to the frame 2 so that it appears from g, and fasten the left cover 9 to the frame 2 from the outside to cover this side.
The cover 9 is provided with windows 9a and 9b, from which the AC output outlet 8c and meters 8d are exposed.

Cover the outer surface of the frame body 3 on the opposite side with the right cover 10,
In the embodiment, the cover 10 is provided with an open protrusion 10a so that the recoil starter operating section is exposed.

By the way, the groove 5 of the carrying handle 5 mentioned above
A breather vip 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.

Reference numerals 13 and 14 are front and rear covers, and the front cover 13 has openings 1 at the four corners for injecting oil into the engine.
3a, closed with a cap 13b made of rubber or the like,
The covers 13 and 14 are provided with ventilation slits 13c and 14c and a mesh ventilation section 1 for internal cooling and heat radiation.
4d is provided.

The surrounding area is covered with such covers 9, 10, 13, and 14 to constitute a soundproof portable generator.

As described above, in this embodiment, the bottom cover 4 that connects the bottom rod parts 2d and 3d of the frames 2 and 3 is formed of a plate-like member, and the structure is such that the bottom cover 4 is supported at the four corners, so that engine work can be carried out easily. When designing the implementation of a machine, etc., there is no need to be too concerned with weight balance, and the design can be made from a functional perspective.

In addition, since the structure is such that the surrounding area is covered with covers 9, 10, 13, and 14, assembly is easy and mass production is possible.Furthermore, during maintenance, it is sufficient to remove and attach the covers at the necessary locations, which is convenient.

(Effects of the Invention) As explained above, according to the present invention, the frame is comprised of a pair of closed frame-shaped frames, a bottom cover that connects the lower parts of the frames, and a carrier that connects the upper parts of the frames. The carrying handle connects the grip part and the upper part of the frame, and serves as a connecting rod to improve the strength of the frame, and the frame is used for attaching the carrying handle and bottom cover. Since the mounting parts are integrally molded, the frame has a simple structure that is easy to assemble, yet has high rigidity and strength.

In addition, since the carrying handle is provided between the upper center of the frame, it provides good balance when hanging and is convenient to carry.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is an exploded perspective view, Fig. 2 is a perspective view of only the frame assembled, and Fig. 3 is a perspective view of the assembled state with an engine, working equipment, etc. FIG. 4 is a perspective view showing an example of the final shape of the engine working machine. In addition, in the drawing, 1 is a frame, 2 and 3 are frame bodies, 2a,
3a is a horizontal rod part, 2b, 2c, 3b, 3c are vertical rod parts, 2d, 3d are bottom rod parts, 2e, 3e are supporting protrusions which are carrying handle attachment parts, 2h, 3h are for attaching a bottom cover, etc. 4 is the mounting boss part, 4 is the bottom cover,
5 is a carrying handle, and 6 is an engine working machine.

Claims (1)

[Claims] 1. An upper horizontal rod portion, a carrying handle attachment portion formed in the center of this horizontal rod portion, two vertical rod portions hanging down from both ends of the horizontal rod portion, and these two vertical rod portions. A pair of frames are formed by integrally molding a bottom rod portion that communicates between the lower portions of the bottom rod portion and a bottom cover mounting portion formed on the bottom rod portion, and a bottom portion is formed between the bottom cover mounting portions of the pair of frames. The pair of frames, the bottom cover, and the carrying handle form a frame by connecting the covers at both ends and connecting the carrying handle attachment portions with the carrying handle, and the engine working machine is attached to the bottom cover. 1. A frame structure for a portable engine-powered working machine, characterized in that the frame structure is configured to place and support and accommodate the above-mentioned in a space surrounded by the frame.