JP3678028B2 - Portable actuator with engine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable actuator with an engine, and more particularly, to an improvement in a fuel tank or handle mounting structure.
[0002]
[Prior art]
A conventional portable generator with an engine is not shown, but includes an engine, a generator that rotates by driving the engine, a cover that protects the surroundings of the engine and the generator, and a support mounted on the top of the cover. And a fuel tank located above the engine and the generator. The fuel tank is manufactured by press-working, welding and caulking a steel plate, coating the surface, and then screwing a portable handle on the top.
In the above configuration, when the engine is driven, the generator rotates and functions as a power source. Further, if a handle attached to the upper part of the fuel tank is used, the handle can be suspended and moved.
[0003]
By the way, if the handle is held and lifted when the generator with the engine is carried, the entire generator with the engine is supported by the handle. Therefore, the fuel tank has a strong structure so that the entire generator with an engine can be supported even when the handle is used when carrying.
[0004]
As prior art documents regarding this type of portable generator with an engine, there are JP-A-6-108869 and 8-223856.
[0005]
[Problems to be solved by the invention]
Conventional portable generators with an engine are configured as described above, and the steel tank is pressed, welded, caulked, and painted to produce a strong fuel tank, so the fuel tank is expensive and heavy, There was a problem of lack of portability. As a method of solving this problem, a method of forming a lightweight fuel tank using a predetermined synthetic resin can be considered.
[0006]
However, the fuel tank made of synthetic resin is characterized by low strength and rigidity, although it is lighter than steel plate. Therefore, when molding a fuel tank using synthetic resin, it is not possible to attach the handle to the upper portion of the fuel tank as in the conventional example from the viewpoint of preventing damage, and it is possible to ensure the strength required when carrying it. It needs to be restructured into a structure. As a result, the structure becomes complicated and the assembly work becomes complicated.
[0007]
The present invention has been made in view of the above problems, and provides a portable engine-equipped actuator capable of attaching a handle to a synthetic resin fuel tank and ensuring the strength required for carrying. The purpose is to do.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes an engine and an actuator that operates by driving the engine, and a fuel tank is supported and mounted above the engine and the actuator via a pair of brackets. , A handle attached to the fuel tank,
The fuel tank is made of synthetic resin, and the fuel tank is divided into a lower fuel tank and an upper fuel tank welded to the opening surface of the lower fuel tank. Each of the lower through holes is molded, each of the both sides of the upper fuel tank is formed with a substantially bottomed cylindrical recessed hole, and each upper part is molded with an upper through hole facing the lower through hole,
At least the tip part of each bracket is a flat part, and the flat part is provided with a screw hole close to and opposed to the lower through hole,
A screw member is passed through the through-holes at both end portions of the handle, and the screw portions are screwed into the screw holes of the flat portion through the lower through-hole and the upper through-hole.
[0009]
The actuator can be a generator or a pump.
Moreover, it is preferable that a spacer is inserted into each screw member and the spacer is interposed between the flat portion of the bracket and the side end portion of the handle.
Further, a part of the lower fuel tank is formed as a substantially central portion, and the substantially central portion is formed in a concave shape so that the lower through hole and the upper through hole are brought close to each other, and the flat portion of the bracket is inserted into the substantially central portion. It is desirable to make it possible.
[0010]
Here, as the engine in the claims, various general-purpose engines represented by, for example, an air-cooled 4-cycle OHV engine can be appropriately used. As the actuator, various generators and various pumps (for example, a self-priming spiral pump) can be used. Further, the fuel tank can be injection-molded or the like by appropriately using various synthetic resins that are excellent in lightness, rigidity, impact resistance, and corrosion resistance. Specific examples of the synthetic resin include at least polyamide, polyamideimide, polyacetal, polycarbonate, polyetheretherketone, phenol resin, polyamideimide, or fluorine resin. The lower fuel tank and the upper fuel tank of the fuel tank are preferably welded by melting the welding surface with frictional heat caused by vibration, that is, vibration welding. Furthermore, the bracket can be configured using cast iron, zinc, steel, or the like.
[0011]
According to the first aspect of the present invention, the handle is coupled via the screw member in a state where the synthetic resin fuel tank is sandwiched between the sandwiched structure and the screw hole of the flat portion of the bracket. The engine and actuator can be supported during transportation or carrying by the welded surface between the tank and the upper fuel tank. Accordingly, a strong structure can be expected, and even if a synthetic resin fuel tank is used, a handle can be attached to the upper part of the fuel tank. In addition, since a synthetic resin fuel tank can be used, processability, mass productivity, light weight, portability, productivity, and the like can be improved.
[0012]
According to the second aspect of the present invention, if a generator is selected as the actuator, the generator can be widely used as an emergency power source, a remote island power source, or a power source for ships. On the other hand, if a pump is used, this pump can be widely used for water supply to tanks, cleaning of factories, water supply and drainage at civil engineering work sites, watering of farmland, watering of greenhouses and houses, or watering of manholes, etc. It is.
According to a third aspect of the present invention, when the diameters of the lower through hole of the lower fuel tank, the upper through hole of the upper fuel tank, and / or the screw member are different, a spacer is interposed in these gaps. .
Furthermore, according to the fourth aspect of the present invention, since a space is created between the front and rear portions on both sides of the lower fuel tank, it becomes easy to discriminate the results of the water pressure test and the like regarding the lower through hole and the upper through hole. .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.
The portable engine-equipped actuator, that is, the portable engine-equipped generator according to this embodiment includes a general-purpose engine 1 and a generator that rotates by driving the engine 1 as shown in FIGS. 8, a metal cover that protects the periphery of the engine 1 and the generator 8, and a synthetic resin fuel tank 12 that is supported and mounted above the cover and is located above the engine 1 and the generator 8, A synthetic resin handle 21 is screwed onto the upper portion of the fuel tank 12.
[0014]
The engine 1 is disposed on the right side of FIG. 1, and a fan 2 is mounted on the side surface of the cylinder block. A handle 3 of a recoil starter for starting the engine is exposed from the fan 2. As shown in FIG. 1 and FIG. 5, a cleaner 2A is mounted above the fan 2, and a strong bracket 4 is mounted inside the cleaner 2A. The large upper end of the bracket 4 has an inverted L-shape. The bent portion 5 is bent (see FIGS. 10 and 11). A thick portion 6 is integrally formed on the horizontal flat portion 5 and a through hole is drilled. A nut 7 that functions as a screw hole is welded to the peripheral portion of the through hole from below. .
[0015]
The generator 8 is of a rotating field type horizontal axis type, and is disposed on the left side of FIG. 1, and the rotating shaft is connected to the crankshaft of the engine 1. As shown in FIG. 4, a strong bracket 4 is mounted above the side surface of the generator 8, and a large upper end of the bracket 4 is bent into an inverted L-shaped flat portion 5. As shown in FIG. 6, a thick portion 6 is integrally formed on the horizontal flat portion 5 and a through hole is drilled. A nut 7 serving as a screw hole is formed on the lower side of the through hole. Has been welded from.
[0016]
The cover includes an under cover that protects the engine 1 and the generator 8 from below, a front cover that protects the engine 1 and the generator 8 from the front, and a rear cover that protects part of the engine 1 and the generator 8 from the back. ing. A plurality of mounting rubbers 10 for installation are arranged in the front, rear, left and right on the under cover. As shown in FIG. 1, an operation panel 11 is mounted on the front cover, and predetermined operation switches, lamps, and the like are arranged side by side on the operation panel 11.
[0017]
As shown in FIGS. 3 and 7 to 9, the fuel tank 12 is basically formed into a substantially rectangular plane, and its four corners are rounded and chamfered, and a part of the back surface is cut into a substantially semicircular shape. It is chipped. The fuel tank 12 is integrally formed from a box-shaped lower fuel tank 13 whose surface is open and an upper fuel tank 14 which is vibration welded to the outer peripheral edge of the opening surface of the lower fuel tank 13.
[0018]
As shown in FIGS. 6, 7 to 9, the lower fuel tank 13 is formed with a substantially central portion 15 on both sides of the lower fuel tank 13. The lower portion of the lower fuel tank 13 is formed between the substantially central portion 15. The flat portions 5 of the brackets 4 are respectively inserted into the spaces. Therefore, as shown in FIG. 9, the side portion of the lower fuel tank 13 has a substantially concave shape in a bottom view and a side view. Further, lower through holes 16 are formed in the center portions on both sides of the lower fuel tank 13, and the lower through holes 16 and the through holes of the flat portion 5 are in close contact with each other and communicated with each other.
[0019]
As shown in FIGS. 3 and 5, the uppermost fuel tank 14 has a front most part and a most rear part formed in a protruding manner, and the front part of the surface is formed in a concave shape in the lateral direction. A cylindrical oil supply port 17 is projected and formed near one side of the front surface of the surface, and a screw is formed on the outer peripheral surface of the oil supply port 17, and the cap 18 is detachable through the screw. It is screwed into. As shown in FIG. 6, a bottomed cylindrical recess 19 is formed in the center of both sides of the upper fuel tank 14, and the bottom of each recess 19 communicates with the lower through-hole 16 in close proximity to each other. An upper through hole 20 is formed by punching.
[0020]
Further, as shown in FIG. 1, FIG. 2, or FIG. 6, the handle 21 is formed into a deformed substantially U shape, and both end portions thereof are placed on the recessed holes 19 via washers 22 for stable seating. Is done. A through hole 23 is formed in each side end portion of the handle 21, and a bolt 24 penetrating the washer 22 and the recessed hole 19 is inserted into the through hole 23 from above. The part is screwed to the nut 7 of the bracket 4 via the lower through hole 16 and the upper through hole 20. A cylindrical spacer 25 is fitted in the shaft portion of the bolt 24, and this spacer 25 is interposed between the upper through hole 20 and the washer 22, in other words, the flat portion 5 of the bracket 4 and the side end portion of the handle 21. It is interposed between. The other parts are the same as those in the conventional example, and thus the description thereof is omitted.
[0021]
According to the above configuration, both end portions of the handle 21 are fixed via the bolts 24 with the fuel tank 12 sandwiched between the strong brackets 4 of the engine 1 and the generator 8, so it is really light and highly rigid. A strong structure can be obtained, and even if a synthetic resin fuel tank 12 is used, the handle 21 can be attached to the upper fuel tank 14 as it is with the conventional design. Therefore, the strength required when carrying can be secured very easily, and there is no complication of the structure or complicated assembly work. Moreover, since the fuel tank 12 made of synthetic resin can be used, portability, productivity, etc. can be remarkably improved, and inexpensive manufacturing can be expected.
[0022]
Further, since the bolts 24 and the spacers 25 are built in the recessed holes 19, they are not exposed to the outside at all, and a very good appearance can be expected. Further, as shown in FIG. 9, the substantially central portions 15 on both sides of the lower fuel tank 13 are recessed and a gap is formed between the front and rear portions on both sides of the lower fuel tank 13, so that the vibration welded portion in the recess hole 19 is formed. Visibility from the outside side is significantly improved. Therefore, the operation of confirming that water bubbles are generated from the vicinity of the flat portion 5, the nut 6, the lower through-hole 16 and the upper through-hole 20 from the outside at the time of manufacture becomes very easy. Furthermore, since the flat part 5 of the bracket 4 conceals the bolts 24 and the spacers 25 upward, they are not exposed to the outside, and a very good aesthetic appearance can be expected.
[0023]
In the above embodiment, the engine 1 and the generator 8 are protected by the cover, but a plurality of pipes are appropriately combined in the XYZ directions to form a strong frame, and the engine 1 and the generator 8 are placed in the frame. May be accommodated. Moreover, in the said embodiment, although the cover which consists of an under cover, a front cover, and a rear cover was shown, it can be increased / decreased suitably. For example, the rear cover may be omitted. In addition, wheels may be disposed instead of the plurality of mount rubbers 10, and the wheels may be disposed together with the plurality of mount rubbers 10. Further, a sealing member such as a gasket or a spacer can be appropriately interposed between the flat portion 5 or the thick portion 6 of the bracket 4 and the lower fuel tank 13. Further, various screw rod members other than the illustrated bolt 24 may be used as appropriate.
[0024]
【The invention's effect】
As described above, according to the first aspect of the present invention, the handle can be attached to the fuel tank made of synthetic resin, and the strength required for transportation and carrying can be ensured. is there.
According to the third aspect of the present invention, even if the diameters of the lower through hole of the lower fuel tank, the upper through hole of the upper fuel tank, and / or the screw member are different, the gaps are filled with the spacer, so that the rattle is not stable. There is nothing. Moreover, the screw member and the spacer are not exposed to the outside, and the appearance is improved.
Furthermore, according to the fourth aspect of the present invention, it is easy to confirm that water bubbles or the like are generated from the vicinity of the lower through hole and the upper through hole.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a portable actuator with an engine according to the present invention.
FIG. 2 is a rear view showing an embodiment of a portable actuator with an engine according to the present invention.
FIG. 3 is a plan view showing an embodiment of a portable actuator with an engine according to the present invention.
FIG. 4 is a side view showing an embodiment of a portable actuator with an engine according to the present invention.
FIG. 5 is another side view showing an embodiment of a portable engine-equipped actuator according to the present invention.
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is a plan view showing a fuel tank without a handle in an embodiment of a portable actuator with an engine according to the present invention.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a side view showing a fuel tank without a handle in an embodiment of a portable actuator with an engine according to the present invention.
FIG. 10 is a front explanatory view showing a bracket in an embodiment of a portable actuator with an engine according to the present invention.
FIG. 11 is a side view showing a bracket in the embodiment of the portable actuator with an engine according to the present invention.
[Explanation of symbols]
1 Engine 4 Bracket 5 Flat part 6 Through hole 7 Nut (screw hole)
8 Generator (actuator)
12 fuel tank 13 lower fuel tank 14 upper fuel tank 15 substantially central portion 16 lower through hole 19 recessed hole 20 upper through hole 21 handle 22 washer 23 through hole 24 bolt (screw member)
25 Spacer

Claims (4)

A portable engine-equipped actuator comprising an engine and an actuator that operates by driving the engine, a fuel tank supported and mounted above the engine and the actuator via a pair of brackets, and a handle attached to the fuel tank. There,
The fuel tank is made of synthetic resin, and the fuel tank is divided into a lower fuel tank and an upper fuel tank welded to the opening surface of the lower fuel tank. Each of the lower through holes is molded, each of the both sides of the upper fuel tank is formed with a substantially bottomed cylindrical recessed hole, and each upper part is molded with an upper through hole facing the lower through hole,
At least the tip part of each bracket is a flat part, and the flat part is provided with a screw hole close to and opposed to the lower through hole,
A portable engine characterized in that a screw member is passed through the through-holes at both end portions of the handle, and each screw portion is screwed to the screw hole of the flat portion via the lower through-hole and the upper through-hole. With actuator. The portable engine-equipped actuator according to claim 1, wherein the actuator is a generator or a pump. The portable engine-equipped actuator according to claim 1 or 2, wherein a spacer is inserted into each of the screw members, and the spacer is interposed between a flat portion of the bracket and a side end portion of the handle. A part of the lower fuel tank is a substantially central part, and the substantially central part is formed in a concave shape so that the lower through hole and the upper through hole are brought close to each other, and the flat part of the bracket can be inserted into the substantially central part. The portable actuator with an engine according to any one of claims 1 to 3.

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