JPH0264226A - Portable type electric power source device - Google Patents

Abstract

PURPOSE:To enable the generation of noise based on the oscillation of a case to be prevented previously by putting an inner case in which an engine and a dynamo are put through a vibration proof member, between case constructing bodys through a cushioning material so as to be fixed. CONSTITUTION:An engine 7 and a dyname 14 are vibro-isolatingly supported through a vibration proof member 21 with respect to an inner case 20. With this arrangement, oscillation is hard to be transmitted to the inner case 20. In addition, the inner case 20 is supported with respect to an outer case 1 by means of simply putting it between case constructing bodys 1a, 1b through a cushioning material 22. Therefore, the inner case 20 is supported in a floating state in the outer case 1, and thereby the oscillation on the engine 7 side which can not be completely absorbed by the vibration proof member 21 is absorbed and lightened again by the cushioning material 22. The engine 7 and the dynamo 14 are vibro-isolatingly supported doubly with respect to the outer case 1, and thereby the transmission of the oscillation to the outer case 1 can be greatly reduced so as to be able to prevent noise from being generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a portable power supply device in which functional parts such as an engine and a dynamo are housed in an exterior case that can be carried by humans.

[Conventional technology]

This type of portable power supply device is mainly transported to places where it is impossible to extract power from power lines, and because it obtains power by driving a dynamo with an engine, it is used not only for various types of work. It is also widely used for leisure purposes.

Traditionally, this portable power supply device has housed the engine, dynamo, and other functional parts necessary for operating the engine in a box-shaped case, with the complex mechanical structure hidden from the outside. It is known that the machine completely changed its image as a general-purpose machine. In this conventional electric wire device, the engine and dynamo are installed on a common bottom plate, and a box-shaped case that covers the engine and dynamo is attached to the bottom plate and is secured by tightening with bolts or the like.

[Problem to be solved by the invention]

However, according to this conventional configuration, since the case is attached to the bottom plate that supports the engine and the dynamo, vibrations from the engine and the dynamo are easily transmitted to the case through the bottom plate. In this case, the area of each surface of the box-shaped case is large relative to its wall thickness, and the surface rigidity of the case itself is relatively low, so when the vibrations are transmitted as described above, the case resonates, causing unpleasant noise. There were problems such as the occurrence of

Therefore, it is an object of the present invention to provide a portable power supply device that makes it difficult for the vibrations of the engine or dynamo to be transmitted to the exterior case, prevents the generation of noise due to the vibrations of the case, and allows for easy assembly. purpose.

[Means to solve the problem]

Therefore, in the present invention, the engine and a dynamo that operates in conjunction with the engine are housed inside the box-shaped exterior case.
The above-mentioned exterior case is constructed by abutting a pair of case components divided in the thickness direction. The engine and dynamo are assembled into a unit by incorporating the engine and dynamo through a vibration isolating member into an inner case that is separate from the outer case, and the inner case is inserted and fixed between the case components via a cushioning material. It is characterized by

[Effect]

According to this configuration, during operation, the engine and dynamo, which are the main sources of vibration, are vibration-proofly supported with respect to the inner case, making it difficult for vibrations to be transmitted to the inner case. Moreover, the inner case is supported with respect to the outer case by simply inserting the cushioning material between the case components, and the inner case is supported in a floating state inside the outer case. Even if vibrations that cannot be absorbed by the vibration isolation member are transmitted to the inner case,
This vibration will be absorbed and relaxed again by the buffer material. Therefore, it is possible to significantly reduce the transmission of engine and dynamo vibrations to the exterior case.

Moreover, since the inner case is fixed by being inserted between the case components, there is no need for bolts to fasten the inner case, which makes the structure simpler and requires fewer parts, making assembly easier. It doesn't require any effort.

〔Example〕

The present invention will be explained below based on an embodiment shown in the drawings.

The exterior case indicated by the symbol l in the figure is formed into a flat box shape,
It has an appearance similar to a handbag.

As shown in Fig. 1, this exterior case l has front and rear case components Ia and lb made of synthetic resin divided in the thickness direction.
These case components 1a and lb are brought into contact with each other and are assembled into a box shape by tightening with screws 2.

In addition, when this exterior case l is placed vertically, a handle 3 for transportation is integrally formed on one side that is the top surface, and at both ends along the width direction of the exterior case l,
Side panels 4a and 4b made of heat-resistant synthetic resin are attached, respectively.

Further, reinforcing rib walls 5 are integrally provided on the inner surfaces of the case components 1a and lb. Each case component 1a,
The rib walls 5 of lb are abutted against each other and partition the inside of the outer case 2 into a plurality of chambers B.

A liquid-cooled two-stroke engine 7 is housed in a chamber 6 located on the opposite side of the chambers G from the handle 3, that is, on the bottom side when the exterior case I is placed vertically. As shown in FIG. 5, this engine 7 includes a hollow crankshaft 8 that is vertically disposed along the height direction of an outer case l. An intake pipe IO is provided protruding from a crankcase 9 that accommodates the crankshaft 8. The air taken in from this intake pipe IO is transferred to an intake port 11 provided on the crankshaft 8.
It enters a crank chamber (not shown) through the piston 12, and is led to the combustion chamber of the cylinder 13 through the scavenging passage when the piston 12 descends.

A starter dynamo 14 that integrates a starter motor and a DC dynamo is arranged on the right side of the engine 7. The starter dynamo 14 is connected to the crankcase 9 of the engine 7 via a box-shaped bracket 18.

A rotating shaft 15 of the starter dynamo 14 is arranged vertically in parallel with the crankshaft 8, and the rotating shaft 15 and the crankshaft 8 are interlocked via a belt 1B. Therefore, when the engine 7 is started, the starter dynamo 14 acts as a starter motor to drive the engine 7, and after the engine 7 is started, the starter dynamo 14 is driven by the power transmitted from the engine 7 to generate electricity.

The cylinder 13 of the engine 7 is located on the opposite side of the starter dynamo 14 across the crankshaft 8, and the muffler 17 connected to the cylinder 13 is led out to the opposite side of the starter dynamo 14. These engine 7, starter dynamo 14, and muffler 17 are assembled in advance into an inner case 20 that is separate from the outer case 1 and are unitized.

That is, the inner case 20 is made of a heat-resistant synthetic resin material such as glass nylon. As shown in FIGS. 1 and 2, this inner case 20 is divided into two parts, a front case 20a and a rear case 20b. It can be assembled into a box shape by tightening it.

Each part of the cylinder 13, starter dynamo 14, and bracket 18 of the engine 7 is elastically supported on the inner surface of the inner case 20 via a vibration isolating member 21 made of rubber or the like. The periphery of the muffler 17 is integrally covered with an inner case 20. Also, this inner case 20
is housed in the chamber B at the bottom of the exterior case 1, and both sides thereof are the case structure 1a.

A cushioning material 22, such as sponge, is interposed in a compressed state between the inner case 20 and the case components 1a and lb. Therefore, the inner case 20 is supported inside the outer case I in a floating state.

An outside air intake port 23 is opened in the upper surface of the inner case 20. The outside air intake port 23 opens into another chamber 6 adjacent to the top, and the crankshaft 8 is disposed inside the outside air intake port 23.
A fan 24 driven by is located. When this fan 24 rotates, air in the adjacent chamber G flows into the inner case 20 through the outside air intake port 23 and cools the engine 7, starter dynamo 14, and muffler 17. Then, this air flows out into the chamber G from the exhaust port 25 on the side surface of the inner case 20, and from there flows into the outer case through the exhaust port 26 provided on one side panel 4a.
is discharged to the outside.

Note that the exhaust outlet 17a of the muffler 17 is connected to the inner case 2.
0 through the through hole 27 on the end surface of the side panel 4a.
is led to the exhaust port 26 of.

A gas cylinder 30 is housed in the chamber 6 in which the outside air intake port 23 of the inner case 20 opens. gas cylinder 30
is filled with pressurized gas such as liquefied butane gas or liquefied propane gas, which serves as fuel for the engine 7. Then, this gas cylinder 30 is loaded horizontally into the chamber B from the cylinder mounting hole 3I opened in one side panel 4a,
A cap 32 prevents the gas cylinder 30 from being removed, and when the gas cylinder 30 is loaded, the nozzle portion 30a at the tip is connected to the socket 33. A pressure regulator 34 for controlling gas pressure to a value slightly higher than atmospheric pressure and a manual main cock 35 are integrated in the receiving port 33, and this main cock 35 is connected to the intake pipe 10 of the engine 7. A pair of electromagnetic valves 37 are provided on the gas supply path 36 to control the gas flow rate.

The right chamber 8 of the inner case 20 and gas cylinder 30
A prismatic battery 38 is arranged.

The battery 38 is placed vertically along the height direction of the exterior case 1, and is connected in parallel to the output end of the starter dynamo 14.

Further, a cartridge type oil tank 40 is arranged in the chamber B on the right side of the battery 38. oil tank 4
0 is located coaxially with the gas cylinder 30, and is loaded horizontally into the chamber B through a tank mounting hole 41 formed in the other side panel 4b, and is held by a cap 32 to prevent removal. In the chamber 6 housing the oil tank 40, a socket 43 is provided for receiving the oil outlet 42 at the tip of the oil tank 40, and this socket is an oil passage connecting the port 43 and the intake pipe 10 of the engine 7. 44, the 6th
As shown in the figure, an oil pump 45 is provided.

A cooling water pump 50 driven by a crankshaft 8 is provided at the bottom of the crankcase 9 of the engine 7 . This cooling water pump 50 and the cylinder 13 of the engine 7
As shown in FIG. 6, a radiator 53 equipped with an electric fan 52 and a pressure regulator 54 made of rubber are installed in the cooling water circulation path 51 connecting the cooling water to the cooling water. It is being

The radiator 53 and the pressure regulator 54 are connected to the oil tank 40
It is housed in chamber B below and to the right of the battery 38, and its radiator 53 is provided at a position facing an outside air intake port 55 provided on the other side panel 4b. Therefore, when the electric fan 52 rotates, the outside air sucked in from the suction port 55 passes through the radiator 53 and flows into the exterior case 1, and the outside air that becomes warm air through heat exchange in the radiator 53 is transferred to the fan. 24 passes around the oil tank 40 and gas cylinder 30 and is sucked into the inner case 20.

In the case of this embodiment, an oil pump 45 and a solenoid valve 37 are installed in the chamber 6 in which the radiator 53 and the pressure regulator 54 are arranged.
is located.

Further, on the upper surface of the exterior case 1, an output socket 5G that takes out electric power from the battery 38, located on both sides of the handle 3, and a bush type power switch 57 and a starter switch 58 are provided.

- According to such a configuration, during operation, the engine 7 and the dynamo 14, which are the main sources of vibration, are vibration-proofly supported with respect to the inner case 20 via the vibration isolating member 21, so that the inner case 20 It becomes difficult for vibrations to be transmitted to the Moreover, the support of the inner case 20 to the outer case l is achieved by simply inserting the buffer material 22 between the case components 1a and lb, and the inner case 20 is supported in a floating state inside the outer case 1. Therefore, even if vibrations from the engine 7 side that cannot be completely absorbed by the vibration isolating member 2I are transmitted to the inner case 20, this vibration will be absorbed and alleviated again by the buffer material 22. Therefore, since the engine 7 and the dynamo 14 are supported with double anti-vibration support with respect to the exterior case l, it is possible to significantly reduce the transmission of vibrations from the engine 7 and the dynamo 14 to the exterior case l. Resonance of the outer case l and generation of noise based on this resonance can be reliably prevented.

Moreover, the inner case 20 includes a pair of case components Ia,
Since the inner case 20 is fixed by being inserted between the inner case 20 and the inner case 20, there is no need for bolts or the like for fixing the inner case 20, and the structure is accordingly simpler and the number of parts can be reduced. At the same time, since the engine 7, the dynamo 14, and the muffler 17 are integrated into the inner case 20 to form a unit, these three functional parts can be housed in the outer case l all at once. Therefore, inner case 2
Coupled with the fact that bolts for fixing the 0 are no longer required, work efficiency is improved, which would otherwise require time and effort in assembly work.

In addition, the engine 7, dynamo 14, and muffler 17, which are the main sources of heat generation and noise, are covered by the inner case 20, which is separate from the outer case l.
There is an advantage that not only the soundproofing performance is improved, but also the influence of heat on other functional parts located around the engine 7 and the dynamo 14 can be suppressed.

In the above embodiment, the engine is liquid-cooled, but the present invention is not limited to this; for example, it may be a forced air-cooled engine.
The inner case may also cover only the engine and dynamo.

〔Effect of the invention〕

-According to the present invention described in detail above, since the engine and dynamo are supported with double anti-vibration support with respect to the exterior case, it is possible to significantly reduce the transmission of vibrations from the engine and dynamo to the exterior case. , it is possible to reliably prevent the generation of noise due to resonance of the exterior case.

Moreover, since the inner case is fixed within the outer case by being sandwiched between a pair of case components, there is no need for a special structure for fixing the inner case, and the engine and dynamo can be integrated into the outer case. Coupled with the fact that it can be arranged, there is an advantage that assembly work does not require much effort and work efficiency is improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view of the outer case and inner case, and FIG.
■A cross-sectional view taken along the line, Figure 3 is a partially sectional front view showing the layout of each ladder functional component within the outer case, Figure 4 is a perspective view of the entire device, and Figure 5 shows the engine. FIG. 6, a partially sectional side view, is a system diagram showing fuel, oil, and cooling water supply paths to the engine. ■...Exterior case, la, lb...Case component, 7...Engine, 14...Dynamo, 17...
Muffler, 20... Inner case, 21... Vibration isolating member, 22... Cushioning material, 30... Gas cylinder, 38...
-Battery, 40...Oil tank, 45...Oil pump, 50...Cooling water pump, 53...Radiator. Applicant's agent Patent attorney Takehiko Suzue 1!2 Figures

Claims (1)

[Claims] In a portable power supply device that houses an engine, a dynamo that works with the engine, and other functional parts necessary for operating the engine in a box-shaped exterior case, the exterior case is divided in the thickness direction. In addition, the engine and dynamo are assembled into a unit through a vibration isolating member in an inner case that is separate from the outer case, and this inner case is used as a shock absorber. A portable power supply device characterized in that the portable power supply device is fixed by being inserted between the case components via a material.