JP2003254080A - Portable generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of portable generators wherein most portable generators are easy to be stolen because of ease of transportation resulting from the fact that a typical portable generator is provided with a locking part in its casing for ease of transportation and transferred between the deck of a conveying means such as a truck and an installation site as the hook of a crane is engaged with the locking part to lift the generator. <P>SOLUTION: This portable generator 1 has a locking bar 14b for engagement with the hook of a crane or the like to lift the generator during transportation. An anti-theft cover 16 for covering a locking part 14 including the locking bar 14b is provided which is screwed in place with anti-theft screws 17. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for preventing the theft of a portable generator that is brought into a construction site or the like and generates electric power by an internal engine.

[0002]

2. Description of the Related Art A portable power generation system that has been conventionally brought to a construction site where there is no power supply means nearby, operates an electric generator to generate electric power by an internal engine, and supplies electric power to electric equipment. Machine technology is well known. For example, Japanese Patent Laid-Open No. 2000-97039 and Japanese Utility Model Laid-Open No. 6-60736.
Is like. In many of such portable generators, a locking portion is usually provided in the housing for facilitating the transportation, and a hook of a crane is engaged with the locking portion to lift the locking portion, so that a truck or the like can be lifted. Transfer was performed between the carrier of the transportation means and the installation place.

[0003]

However, the ease of transportation means that the portable generator can be easily moved even in the case of theft, and it is only necessary to horizontally mount a truck equipped with a crane or the like. Since it can be easily lifted and placed on the bed, the conventional portable generator sometimes suffers from theft.

[0004]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below.

That is, according to the first aspect of the present invention, a portable generator having a locking portion for lifting during transportation is provided with an antitheft cover for covering the locking portion.

According to a second aspect of the present invention, the antitheft cover is an openable type.

According to a third aspect of the present invention, the antitheft cover is provided with a locking type locking mechanism.

According to a fourth aspect of the present invention, the anti-theft cover is provided with a vibration damping member.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 is a perspective view of a portable generator, FIG. 2 is a left side view of the portable generator, FIG. 3 is a plan view of the portable generator, FIG. 4 is a diagram showing an internal configuration of the portable generator, and FIG. 6 is a diagram showing a state of a locking portion at the time of lifting, FIG. 6 is a diagram showing a second embodiment of the anti-theft cover, FIG. 7 is a diagram showing a third embodiment of the anti-theft cover, and FIG. 8 is a diagram showing the anti-theft cover. It is a figure which shows a 4th Example.

First, the overall configuration of the portable generator 1 will be described with reference to FIGS. 1 to 3. In the portable generator 1 of this embodiment, the constituent elements of the portable generator 1 are mounted on a lower frame 2 arranged below the constituent elements, and the constituent elements are covered by a soundproof cover 3 to provide a soundproof effect. It is configured to improve. Therefore, in the portable generator 1, what constitutes the casing is the lower frame 2 and the soundproof cover 3.

As shown in FIG. 3, the portable generator 1 has a rectangular shape in plan view, a control panel 4 and a power outlet 5 are provided on one side of the short side, and one side of the long side is provided. Opening / closing doors 6 and 7 are provided. The control panel 4 operates the portable generator 1 and displays the operating state. The electric power generated by the portable generator 1 is supplied to the electric device by connecting a wiring cable to the power outlet 5. In the following description, for convenience, the side surface provided with the control panel 4 and the power outlet 5 will be referred to as "front surface" and the surface provided with the opening / closing doors 6 and 7 will be referred to as "left side surface". To do. The open / close doors 6 and 7 are pull tabs 8 provided on the surface of the open / close door 7.
It is configured to open from the center to both left and right sides by pulling. As a result, the amount of opening on the side surface of the power generator 1 can be increased, and the maintainability is improved. Further, the pull tab 8 is provided with a key hole 9 so that only a worker having a key matching the key hole 9 can freely touch the inside of the portable generator 1. Intake ports 10, 11, 12 and a fuel display window 13 are provided on the left side surface of the portable generator 1, and an unillustrated intake port is also provided on the right side surface.

Further, on the upper surface of the portable generator 1, a locking portion 14 for lifting the portable generator 1 with a crane or the like,
A fuel supply port 15 and an exhaust port 18 are provided. The anti-theft cover 16 having a U-shaped cross section (first embodiment) is provided with the anti-theft screws 17 ...
It is screwed in a state of covering 4. The locking portion 14 and the anti-theft cover 16 will be described in detail later.

Next, the internal structure of the portable generator 1 will be described with reference to FIG. Inside the portable generator 1, an engine 19, a generator 20, a fuel tank 21, and a battery 22 are provided.
Are installed. A generator 20 is connected to the engine 19, and the generator 2 is connected by the output shaft of the engine 19.
0 is driven and electric power is generated. The fuel tank 21 supplies fuel to the engine 19, and on the side surface of the fuel tank 21,
A window 21a is provided on the side of the soundproof cover 3 at a position corresponding to the fuel display window 13, and the liquid level of the fuel (that is, the remaining amount of fuel)
Is configured to be visible from the outside of the portable generator 1, and a fuel supply port 15 is provided on the upper surface of the fuel tank 21. The fuel supply port 15 is configured to project from the recess 3 a provided on the upper surface of the soundproof cover 3 to the outside of the soundproof cover 3 and not to project upward from the upper surface of the soundproof cover 3. With this configuration, the portable generator 1
The fuel can be supplied by opening the fuel supply port 15 without removing the soundproof cover 3 or opening the opening / closing doors 6 and 7. Further, since the fuel supply port 15 does not project from the upper surface of the soundproof cover 3, it does not interfere with the surroundings at the time of transportation or the like to damage the fuel supply port 15.

A front partition wall 23 is provided upright between the generator 20 and the control panel 4, and the intake port 1 is formed so as to penetrate the space inside the soundproof cover 3 in front of the front partition wall 23 and the outside.
0 is drilled. Further, a partition plate 24, which partitions the generator 20 and the fuel tank 21 from the upper and lower midpoints of the front partition wall 23, and which also functions as a support means for the fuel tank 21, is horizontally arranged. A shielding plate 25 is erected in front of the fuel tank 21 to reduce the noise of the engine 19 transmitted to the control box 4 side.

A fan 26, a radiator 27, and mufflers 28 and 29 are disposed behind the engine 19, and the muffler 28 and
A guide 30 is provided above 29. The radiator 27 is fixedly mounted on a rear partition wall 37 which is erected from the lower frame 2. The guide 30 guides the cooling air generated by the fan 26 to the exhaust port 18, and is arranged at the upper rear corner of the portable generator 1 from the left side surface to the right side surface.
As shown in FIG. 4, the guide 30 is T-shaped in a side view, and a sound absorbing material 31 is attached to the surface facing inward of the portable generator 1 to improve the sound deadening effect. The exhaust port 18 is provided substantially in the center of the upper surface of the portable generator 1 farthest from the outer peripheral portion of the portable generator 1, and exhausts toward the upper side of the portable generator 1. Therefore, the exhaust gas of the engine 19 is exhausted. Is not directly sprayed on the surrounding workers, and the workability around the portable generator 1 is improved.

An air cleaner 32 is provided above the engine 19.
And an upper partition 33 is arranged above the air cleaner 32. The upper partition 33 is the engine 19
And the air outlet 18 are arranged in the horizontal direction. As a result, the noise generated by the engine 19 does not directly come out of the portable generator 1 through the exhaust port 18.

An intake chamber (intake duct, resonator) 34 is disposed on the lower surface of the upper partition wall 33, one end of an intake pipe 35 is connected to the inlet side of the intake chamber 34, and the other end of the intake pipe 35 is connected. The side is the engine room (inside the internal space of the portable generator 1, the left and right side walls of the soundproof cover 3 or the opening / closing doors 6, 7, the front partition wall 23, the shield plate 25, the upper partition wall 33, the radiator 27, the rear partition wall 37,
And a portion surrounded by the lower frame 2).
The outlet side of the intake chamber 34 is connected to the inlet side of the air cleaner 32 via a connecting pipe 36. The air in the engine room is sucked from the intake pipe 35 to reduce noise caused by the engine 19 in the intake chamber 34, and the cleanliness is increased by the air cleaner 32 via the connection pipe 36, and the connection pipe from the outlet side of the air cleaner 32. Three
It is supplied to the engine 19 from the intake port 19a via With this configuration, noise is reduced, and the outside air is positively introduced into the engine room by sucking the air in the engine room into the engine 19, which results from the heat generated by driving the engine 19. It is possible to suppress the temperature rise in the engine room.

In the portable generator 1, the engine 19 has a base 4 fixed to the lower frame 2 via a vibration isolator 39.
1, the generator 20 is attached to the vibration isolator 40.
It is attached to the pedestal 42 fixed to the lower frame 2 via. With such a configuration, the engine 19 and the generator 2 that are sources of vibration of the portable generator 1 are generated.
Vibration transmitted from 0 to the lower frame 2 and the soundproof cover 3 is reduced, and noise is suppressed.

An intake port 19a is provided above the engine 19.
And an exhaust port (not shown) are provided for the engine 1
The central portion of 9 is composed of a cylinder block and a crankcase. An oil pan 43 is provided below the engine 19. Oil pan 43
One end of the drain 44 is connected to the drain 4
The other end of 4 projects to the outside of the lower frame 2 and opens / closes the door 6.
Engine oil can be drained without opening 7.

Next, the locking portion 14 and the anti-theft cover 16 which are the main parts of the present invention will be described. As shown in FIG. 1, the locking portion 14 includes a recess 14a, an engagement bar 14b, and auxiliary bars 14c and 14c. The recess 14a is provided in the front-rear center of the upper surface of the soundproof cover 3 of the portable generator 1 and has a groove shape that penetrates the left and right side surfaces. The engagement bar 14b is located at the center of the recess 14a in the left-right direction, penetrates the front and rear wall surfaces, and the front and rear ends thereof are fixed to the reinforcing member 45 (shown in FIG. 4) inside the soundproof cover 3. In addition, a gap is provided between the lower surface of the engaging bar 14b and the bottom surface of the recess 14a so that the crane hook 46 can be engaged and a fork of a forklift or the like can be inserted from the side of the portable generator 1. is there. The lower end of the reinforcing member 45 has the lower frame 2
Fixed to the crane hook 4 as shown in FIG.
It is possible to engage 6 with the engaging bar 14b and lift it. The arrangement position of the engagement bar 14b is set so that the posture of the portable generator 1 does not become unstable when the portable generator 1 is lifted, in consideration of the weight balance of the internal structure. It is preferable to be vertically above the center of gravity of the machine 1. The auxiliary bars 14c and 14c penetrate the front and rear wall surfaces of the recess 14a near the left and right side surfaces of the soundproof cover 3,
Similar to the engaging bar 14b, the front and rear ends of the reinforcing member 45 are fixed. Then, it is possible to hang two wires by hanging the wire rope on the auxiliary bars 14c, 14c, and when the forks of the forklift are inserted from the side of the portable generator 1 and lifted, the engaging bars 14b Also, since it is supported at a plurality of positions of the auxiliary bars 14c and 14c, the portable generator 1 does not swing during transportation.

The antitheft cover 16 which is the first embodiment of the antitheft cover of the portable generator 1 is U-shaped in cross section as shown in FIG. 1, and is soundproofed by the antitheft screws 17, 17 ... By fixing to the cover 3, the locking portion 14 is covered so that it cannot be lifted by a crane hook or lifted by a fork to prevent theft when it is installed and used at a construction site or the like.

At this time, the anti-theft screws 17, 17 ...
Is a screw with a special shape (three-lock screw, socket screw, two-hole screw, one-way screw, Torx screw, tri-wing screw, square for hole) so that it cannot be removed with a widely used wrench or spanner. The use of screws, line head screws, center pin button cap screws, etc.) improves the anti-theft effect. That is, it is possible to prevent the portable generator 1 from being stolen by storing a dedicated tool for the user to fasten the anti-theft screws 17 ... With this configuration, it is possible to prevent theft using a crane or the like such as a conventional portable generator. Further, the structure of the anti-theft cover is simple and can be supplied at low cost. Although the anti-theft cover 16 is fixed by using four anti-theft screws 17 in this embodiment, the number of the anti-theft screws 17 is not limited. Alternatively, the antitheft cover 16 may be provided with a locking claw, a hole for engaging the locking claw may be provided on the soundproof cover 3 side, and after the locking, the antitheft screw 17 may be fastened. Further, the outer shape of the anti-theft cover 16 is not limited to the U-shape in cross section, and it is not necessary to cover the entire concave portion 14a as long as it covers the locking portion and cannot be lifted by a crane or the like.
It may be configured to partially cover the engaging bodies such as the engagement bar 14b and the auxiliary bars 14c and 14c.

Next, the antitheft cover 47 which is the second embodiment of the antitheft cover will be described with reference to FIG. The outer shape of the anti-theft cover 47 is substantially the same as the anti-theft cover 16 in cross section, but hinges 48 and 48 connect the upper surface of the anti-theft cover 47 and the upper surface of the soundproof cover 3 and the hinge 48 rotates the hinge. The anti-theft cover 47 is configured to open and close by moving. The hinge 48 is welded,
Fixing with hexagon bolts, or theft prevention screw 17
-Fixed to the anti-theft cover 47 and the soundproof cover 3 with special screws such as 17 ... A key cylinder 49 is provided on the upper surface of the anti-theft cover 47, and the key cylinder 49 is configured to be axially rotatable by inserting a dedicated key (not shown). A key hook 50 is provided at the lower end of the key cylinder 49, and the key hook 50 is engaged with the locking bar 14b by rotating integrally with the key cylinder 49.
Cannot be opened or closed. With this configuration, the anti-theft screws 17, 17 ... As in the first embodiment.
The anti-theft cover 47 can be opened and closed by holding a key dedicated to the key cylinder 49 instead of the dedicated tool for fastening. Further, since the anti-theft cover 47 and the soundproof cover 3 are connected by the hinge 48, the anti-theft cover 47 is not lost. Further, as compared with the case where the anti-theft screw 17 is removed, the worker has the anti-theft cover 47.
The time required to open and close can be shortened. In the second embodiment, the key hook 50 engages with the locking bar 14b to lock the anti-theft cover 47, but the anti-theft cover 47 cannot be freely opened / closed by a key other than the dedicated key. The structure is not limited, as long as it exists. For example, a hole is formed in the wall surface of the concave portion 14a which is in contact with the upper surface of the soundproof cover 3 on the side where the hinge 48 is not provided, and the key cylinder 49 is rotated by a dedicated key so that the hole and the key hook 50 are engaged with each other. You may comprise. Further, the key of the keyhole 9 provided in the pull tab 8 can be interlocked via a link mechanism or the like, and the number of locking operations can be reduced. It should be noted that the mounting positions of the hinge 48 and the key cylinder 49 are not limited, and the hinge 48 and the key cylinder 49 can be arranged not only on the upper surface but also on the side portion.

Next, the antitheft cover 51, which is the third embodiment of the antitheft cover, will be described with reference to FIG. The anti-theft cover 51 has an outer shape that is substantially the same as the anti-theft cover 16 in cross section, but is bent inward so that the lower ends of the side surfaces 51 a face each other to form a folded portion 51 b. Further, slide grooves 52, 52 are formed in the left and right side surfaces of the soundproof cover 3 along the front-rear direction of the portable generator 1, and the folded-back portions 51b are slidably fitted in the slide grooves 52, 52. ing. Therefore, the anti-theft cover 51
Is slidable in the front-rear direction along the slide grooves 52, 52 and does not come off the slide grooves. In addition, from the top surface of the anti-theft cover 51, the U-shaped member 53
Is erected, and the U-shaped member 54 is erected from the upper surface of the soundproof cover 3. At this time, the U-shaped members 53 and 54 penetrate the central opening of the U-shaped members 53 and 54 when the anti-theft cover 51 is at the position (lock position) where the anti-theft cover 51 covers the locking portion 14, and the commercially available padlock. 56 and the like are arranged so as to satisfy the positional relationship that enables locking. The U-shaped member 53
Instead of providing 54, a hole into which the ring portion of the padlock 56 can be directly inserted can be opened in the anti-theft cover 51 and the soundproof cover 3. With this configuration, the anti-theft cover 51 can be easily opened and closed with a commercially available padlock or the like instead of the dedicated tool for fastening the anti-theft screws 17, 17 ... Like the first embodiment. The anti-theft cover 51 will not be lost.

Next, the antitheft cover 55 which is the fourth embodiment of the antitheft cover will be described with reference to FIG. Although the outer shape of the anti-theft cover 55 is substantially the same as the anti-theft cover 16 in cross section, a portion where the anti-theft cover 55 and the soundproof cover 3 come into contact with each other (in the present embodiment, the U-shape is omitted). A damping member 56 made of elastomer, rubber, resin or the like is provided on the entire wall surface). With this configuration, due to the vibration of the portable generator 1,
Anti-theft cover 55, soundproof cover 3 and locking bar 14b
Alternatively, it is possible to reduce vibration noise generated between the auxiliary bar 14c. The shape of the anti-theft cover provided with the vibration damping member is not limited. For example, even if the anti-theft cover 47 of the second embodiment or the anti-theft cover 51 of the third embodiment is provided with a vibration damping member, the vibration noise can be reduced. Further, in the present embodiment, the damping member 56 is attached to the entire inner wall surface of the U-shape, but in a range where the anti-theft cover 55 and the soundproof cover 3 are not in contact with each other, the damping member 56 is attached only to a part thereof. May be Further, even if the damping member 56 is attached on the soundproof cover 3 side, the same effect is obtained.

[0026]

Since the present invention is constructed as described above,
The following effects are achieved.

That is, as described in claim 1, in the portable generator having the engaging portion for lifting during transportation, since the antitheft cover for covering the engaging portion is provided, the crane can be simply covered. It is possible to prevent theft using a crane because it cannot be hooked. Further, the anti-theft cover can have a simple structure and can be supplied at a low cost.

As described in claim 2, since the antitheft cover is openable, the antitheft cover is never lost. Further, the locking portion is not exposed, so that the appearance can be improved, and it can be exposed only when necessary.

Since the lock mechanism is provided on the anti-theft cover as described in claim 3, the locking portion cannot be exposed unless the key is released, and the theft can be reliably prevented. In addition, a dedicated tool for fastening the anti-theft screw is not required, and the time required for the operator to open and close the anti-theft cover can be shortened.

Since the anti-theft cover is provided with the vibration damping member as described in claim 4, it is possible to reduce the vibration noise generated between the anti-theft cover and the soundproof cover.

[Brief description of drawings]

FIG. 1 is a perspective view of a portable generator.

FIG. 2 is a left side view of the portable generator.

FIG. 3 is a plan view of a portable generator.

FIG. 4 is a diagram showing an internal configuration of a portable generator.

FIG. 5 is a view showing a state of a locking portion at the time of lifting.

FIG. 6 is a view showing a second embodiment of the anti-theft cover.

FIG. 7 is a view showing a third embodiment of the anti-theft cover.

FIG. 8 is a view showing a fourth embodiment of the anti-theft cover.

[Explanation of symbols]

1 Portable generator 14 Locking part 14b Locking bar 16 Anti-theft cover 47 Anti-theft cover 48 hinges 49 key cylinder 50 key hook 51 Anti-theft cover 55 Anti-theft cover 56 Damping member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Seiji Sakata             428 Enami, Okayama City Seirei Industrial Co., Ltd.             In-house F-term (reference) 5C084 AA03 AA09 HH17

Claims (4)

[Claims] 1. A portable generator having a locking portion for lifting during transportation, comprising a burglarproof cover for covering the locking portion. 2. The portable generator according to claim 1, wherein the anti-theft cover is an openable type. 3. The portable generator according to claim 1, wherein the anti-theft cover is provided with a lock type locking mechanism. 4. The portable generator according to claim 1, wherein a vibration damping member is provided on the anti-theft cover.