JPS6357612B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement of a case-housed engine generator in which an air-cooled engine, a generator, and auxiliary equipment are housed in a case.

(Prior art) Case-housed engine generators have been widely used in the past, and in conventional case-housed engine generators, the engine governor mechanism and engine operating mechanism are usually arranged side by side on the front side of the engine. (Jitko No. 57-43079).

However, in the conventional example described above, the space inside the case cannot be used effectively, and the outside size of the case becomes unnecessarily large.

(Object of the Invention) The present invention provides a case-housed engine generator in which the engine governor mechanism is provided on the rear side of the engine, and the engine operating mechanism is provided on the front side of the engine to effectively utilize the space inside the case. is intended to provide.

(Structure of the Invention) The present invention provides a case-housed engine generator in which an air-cooled engine, a generator, and auxiliary equipment are housed in a case having a substantially rectangular external shape. A generator is placed on the front side of the generator, a silencer is placed on the rear side of the generator, and a governor mechanism is installed in the space between the silencer on the rear side of the engine and the intake pipe extending to the rear side of the other side of the engine. , an air cleaner is provided on the front side of the other side of the engine, an engine operating mechanism is arranged between the air cleaner and the generator, and a connecting member is provided to interlock and connect the engine operating mechanism and the governor mechanism. This is a case-housed engine generator featuring:

(Example) In FIG. 1 showing a case-housed engine generator to which the present invention is applied, 2 is a case, and the case 2, which has an approximately rectangular external shape, accommodates an engine, a generator, and auxiliary equipment, which will be described later. has been done. Case 2
The upper part of the fuel tank 4 is exposed on the upper surface of the
A handle 6 is provided above the fuel tank 4. A fuel filler port 8 and an oil level gauge 10 are provided on the front side of the upper surface of the fuel tank 4 .

The front panel 12 of the case 2 includes a front panel 14 and an air cleaner cover 1 necessary for operation and maintenance.
6, starter handle 18, lubricating oil filler port 20
(In both cases, the operation parts) are arranged in a concentrated manner.

As shown in FIG. 2, the case 2 includes a front plate 12, a rear plate 22, a right side plate 24, a left side plate 26, and a bottom plate 2.
8 are assembled with screws into a substantially rectangular parallelepiped shape with an open top, and the top opening is covered with the fuel tank 4. An opening 30 is provided at the top of the front panel 12 for attaching the front panel 14.
An opening 31 for the starter handle 18, an opening 20a for the lubricating oil filler port 20, and a louver 12a are formed in the lower part. Louvers 2 are also installed on the rear panel 22, right panel 24, and left panel 26, respectively.
2a, 24a, and 26a are formed. Bottom plate 2
8 is provided with an annular projection 32 for mounting an engine and a generator, and a mounting leg 34 is positioned on the annular projection 32 and fixed with a bolt 34a. The mounting bolts 36 are tightened from the bottom side of the bottom plate 28. A tool attachment hole 38 is provided in the bottom plate 28, and the head 40a of the tool 40 is fitted into the cap 38b which is fitted into the protrusion 38a of the tool attachment hole 38, and the tool 40 can be attached and detached using the attachment rubber 42. It is installed. Further, legs 44 are fixed to the bottom surface of the bottom plate 28.

In FIG. 3, which is seen from the front with the front panel 12 removed from the case-housed engine generator in the assembled state, the engine 4 is located in the lower central part of the fuel tank 4.
6 is placed. The engine 46 is, for example, a side valve type single cylinder gasoline engine.
The cylinder portion 6 is covered with a plate-shaped bracket (not shown) that serves as an engine cover.
A generator 50 is provided on one side of the engine 46, that is, the right side in FIG. 3, and the generator 50 is connected to the output shaft of the engine 46.

A fan cover 52 is provided on the other side of the engine 46, that is, on the left side in FIG. 3, and a centrifugal fan (cooling fan) is housed in the fan cover 52. Further to the left of the fan cover 52, a carburetor 54 and a coil starter 56 are arranged.

The fuel tank 4 shown in FIG. 3 is provided with an air breather 4a, and vinyl tubes 4c are fitted into the air breathers 4a through connection pipes 4b having a narrow inner diameter of, for example, about 2 mm.
The vinyl tubes 4c are arranged side by side inside the handle 6, and their ends are open to the atmosphere.

In FIG. 4, seen from above with the fuel tank 4 and handle 6 removed from the case-housed engine generator in the assembled state, the generator 50 and the fuel tank 4 are shown.
A muffler 58 is arranged in a space on the rear plate 22 side between the two. An exhaust pipe 59 is connected to the muffler 58, and an exhaust port 60 of the muffler 58 is provided on the right side. A spark prevention pipe (not shown) made of wire mesh is provided at the exhaust port 60 of the muffler 58 to prevent discharge of sparks.

As shown in FIG. 3, the upper cover 62 has a gap 63 between it and the fuel tank 4, and an opening 62a.
A part of the cooling air generated by the centrifugal fan 52a flowing out from the fuel tank 4 is caused to flow into the gap 63 and the silencer 58
This prevents the heat from reaching high temperatures. Gap 63
The cooling air from the centrifugal fan 52a and the centrifugal fan 50b of the generator 50 are exhausted from the louver 22a of the rear plate 22 to the outside. It's getting old.

In the space surrounded by the generator 50, muffler 58, and fuel tank 4, there is a front panel 1 as shown in FIG. 4b.
AC outlet 14a, voltmeter 14b, DC outlet 14c, and breaker 14 attached to 4
d, a pilot lamp 14e, an oil warning lamp 14f, etc. are accommodated. Also, the front panel 14
is provided with a Hertz switching window 14g, an inverted L-shaped groove 14h, and an opening 14i. A knob 14j for engine operation is provided in the inverted L-shaped groove 14h.

As shown in FIG. 4, the carburetor 54 is connected to an intake pipe 68 bent in a substantially U-shape.
An air cleaner 70 is attached to the. A rod 54c is connected to a throttle valve lever 54a of the carburetor 54 via a tension spring 54b, and the rod 54c is connected to a governor lever 72. Chewing valve lever 54d of carburetor 54
A chiyoke lever 54e is connected to the chiyoke lever 54e, and the tip of the chiyoke lever 54e is exposed from the front plate 12.

As shown in FIG. 4, the carburetor 54 is connected to an intake pipe 68 bent in a substantially U-shape.
An air cleaner 70 is attached to the. A rod 54c is connected to a throttle valve lever 54a of the carburetor 54 via a tension spring 54b, and the rod 54c is connected to a governor lever 72. Chewing valve lever 54d of carburetor 54
A chiyoke lever 54e is connected to the chiyoke lever 54e, and the tip of the chiyoke lever 54e is exposed from the front plate 12.

These intake devices include a gasket and an insulator on the flange of the intake pipe 68, and a through bolt 70b between the carburetor 54 and the air cleaner 70 via a carburetor support plate and gasket as shown in FIG.
The penetrating bolt 70b protruding into the air cleaner 70 has a center bolt 70c.
are screwed together, and the tip of the center bolt 70c has a perforated plate 70d, an air cleaner element 70e,
Bolts 70 fixing the air cleaner cover 16
g are screwed together. The air cleaner cover 16 is located in the opening of the front panel 14, and the air intake hole 70h of the air cleaner 70 opens inward.

As shown in FIGS. 3 and 4, the fan cover 5
A urethane seal 74 (dividing member) is provided around 2. Urethane seal 74 is case 2
As shown in FIG.
is fixed to. Therefore, urethane seal 7
Air from the engine 46 and muffler 58 sides, which are at high temperatures, does not flow into the space separated by 4 on the intake device side. Note that the tension spring 54b
The passage portion is separated by a gap between urethane seals 74 (FIG. 4).

As shown in FIG. 6, a governor mechanism 76 is provided on the rear surface of the engine 46. The governor mechanism 76 includes a governor gear 76a, a link 76b, a thruster 76c, a governor shaft 76d, etc.
The movement of the governor weight 76e of the governor gear 76a due to centrifugal force is controlled by the link 76b and the slider 76.
c functions to convert the rotation of the governor shaft 76d. The governor shaft 76d projects toward the rear side of the engine 46. Note that 46a is a side cover of the crankcase, and 46b is a camshaft.

The engine control section consisting of the governor mechanism 76 on the rear side of the engine 46 and the engine operating mechanism on the front side of the engine 46 will be described with reference to FIG. 7, which shows the engine 46 viewed diagonally from above on the rear side. The governor shaft 76d is fixed to the rotation center 72a of the governor lever 72, and the lower end of the governor lever 72 is connected to the regulator 72c by a tension spring 72b.
is connected to. The regulator 72c is rotatably attached to the engine 46 with a bolt 72d. The connection wire 72e is connected to the regulator 72c.
(Connecting member) One end is connected, and the connecting wire 72
e extends from below the engine 46 to the front side of the engine 46. A bracket 78, a control lever 80, a control shift lever 82, etc. are attached to the front side of the engine 46. The control lever 80 is rotatably attached to the bracket 78 with a mounting bolt 80a, and the wire connection portion 80 of the control lever 80
The other end of the connection wire 72e is connected to b. A locking portion 80c is formed on the control lever 80, and a locking portion 78a of the bracket 78 is formed.
A tension spring 80 is provided between the locking portion 80c and the locking portion 80c.
d (elastic member) is suspended. The tension spring 80d is disposed on the right side of the mounting bolt 80a in the assembled state shown in FIG.
The control lever 80 is biased in the direction of rotating to the right around point a.

The bracket 78 is formed with a limit switch mounting plate 78b and a sub-bracket 78c. A protrusion 82a of a control shift lever 82 is slidably attached to a long hole 80e of the control lever 80. A stepped portion 82b is formed at the lower part of the control shift lever 82, and a protrusion 82c is also provided at the upper front surface. Protrusion 82
c fits into the inverted L-shaped groove of the front panel,
The knob for operating the engine is fixed to the protrusion 82c protruding from the front surface. Therefore, as shown in FIG. 4, the arrangement of each mechanism in the case 2 is such that the generator 50 is arranged on the right front side of the engine 46, and the silencer 58 is arranged on the rear side of the generator 50. , a governor mechanism 76 is disposed in the space between the muffler 58 on the rear side of the engine and the intake pipe 68 extending to the left side rear side of the engine 46, and an air cleaner 70 is provided on the left side front side of the engine, and the air cleaner 70 and the above-mentioned An engine operating mechanism C consisting of a lever 82 (FIG. 3) and the like is arranged between the generator 50 and the generator 50.

Further, as shown in FIG.
4a are connected. The fuel tank 84 is provided with a fuel filter 84b.
4 is a pipe 84 through which fuel flows from the fuel tank 4.
c and pipe 84d are connected. Further, a Hertz switching bolt 86 is attached to a sub-bracket 78c of the bracket 78 so that its position can be adjusted by a nut 86a.
The control lever 80 has a function of regulating the end position of the control lever 80, which is rotated to the right by the tension spring 80d. bracket 78
A limit switch 78d is attached to the limit switch attachment plate 78b. The limit switch 78d has the function of opening and closing the ignition circuit of an igniter (not shown).

Next, the operation will be explained. When the knob 14j in FIG. 4b is located at the lower end of the vertical groove portion of the inverted L-shaped groove 14h, the bracket 78 is positioned as shown in FIG.
is in contact with the stepped portion 82b of the control shift lever 82, turning off the ignition circuit of the igniter, and the lever 84a of the fuel cock 84 is in the closed position. When the knob 14j is moved upward along the vertical groove portion of the inverted L-shaped groove 14h, the stepped portion 82b moves away from the limit switch 78d, and the ignition circuit is turned on by grounding the igniter, and the lever 84a of the fuel pot 84 is turned on. Rotates to the valve open position. When the knob 14j moves to the upper end of the vertical groove of the inverted L-shaped groove 14h, the control lever 80 is rotated to the right by the tension spring 80d, and the knob 14j
slides to the right along the horizontal groove portion of the inverted L-shaped groove 14h, and eventually the upper end surface of the control lever 80 comes into contact with the Hertz switching bolt 86, and the control lever 80 is positioned. At this time, the connecting wire 72e connected to the wire connecting portion 80b of the control lever 80 is pulled, and the throttle valve lever 54a of the carburetor 54 is controlled via the governor lever 72 to open the engine rotation speed capable of generating, for example, 60 Hz alternating current. Rotate until the end. When switching to 50 hertz, the position of the hertz switching bolt 86 is adjusted to change the opening degree of the throttle valve lever 54a. Next time you stop operation, turn knob 14j.
is moved to the left along the horizontal groove portion of the inverted L-shaped groove 14h against the tensile force of the spring 80d,
When the knob 14j is returned to the lower end of the vertical groove portion of the inverted L-shaped groove 14h, the fuel cock 84 is closed and the igniter is turned off.

(Effects of the Invention) As explained above, according to the present invention, the engine 4
6 is placed inside the case 2, and a governor mechanism 76 is placed on the rear side of the engine 46.
The engine operating mechanism is disposed on the front side of the engine 46, and a connecting wire 72e is provided to interlock and connect the engine operating mechanism and the governor mechanism 76.
The space on the front side and the rear side of the case 2 can be effectively utilized, and the size of the case 2 can be minimized, thereby making it possible to reduce the external size of the case-housed engine generator.

Furthermore, since the engine operating mechanism can be operated using the knob 14j on the front panel 14, the engine 46 can be operated while facing the front panel 14, making the operation easy. In particular, in the present invention, a generator 50 is arranged on the right front side of the engine 46 in FIG.
8 and an intake pipe 68 extending to the left rear side of the engine 46, a governor mechanism 76 is disposed in a space between the engine 46 and an air cleaner 70 to the left front side of the engine,
Since the engine operating mechanism C is disposed between the air cleaner 70 and the generator 50, the space inside the case 2 can be effectively used to compactly accommodate the governor mechanism 76 and the engine operating mechanism C.
It is possible to reduce the size of the .

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a case-housed engine generator to which the present invention is applied, Fig. 2 is an exploded perspective view of the case, and Fig. 3 is a front view of the case-housed engine generator with the front plate removed. Figure 4 is a plan view (top view) of a case-housed engine generator with the fuel tank removed, Figure 4b is an exploded perspective view of the front panel, and Figure 5 is a cross-sectional view taken along the line V-V in Figure 3. , FIG. 6 is an exploded perspective view showing the governor mechanism, and FIG. 7 is an exploded perspective view of the engine control section. 2...Case, 4
... Fuel tank, 6 ... Handle, 12 ... Front plate, 14 ... Front panel, 16 ... Air cleaner cover, 18 ... Starter handle, 20 ...
Lubricating oil filler port, 22... Rear plate, 46... Engine, 58... Silencer, 50... Generator, 58...
Silencer, 54... Carburizer, 56... Recoil starter, 76... Governor mechanism, 72e... Connection wire, 80... Control lever, 82... Control shift lever.

Claims (1)

[Claims] 1. In a case-housed engine generator, in which an air-cooled engine, a generator, and auxiliary equipment are housed in a case with an approximately rectangular external shape, the air-cooled engine is placed inside the case, and the generator is placed in front of one side of the engine. A silencer is placed on the rear side of the generator, a governor mechanism is placed in the space between the silencer on the rear side of the engine and the intake pipe extending to the other side of the engine, and a governor mechanism is placed on the other side of the engine. A case-housed engine, characterized in that an air cleaner is provided on the front side, an engine operating mechanism is disposed between the air cleaner and the generator, and a connecting member is provided that interlocks and connects the engine operating mechanism and the governor mechanism. Generator.