JP2003120314A - Operation dial structure for engine generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by simplifying a series of operations relating to operation and stop of an engine generator. SOLUTION: An operation dial 7 is provided on an operation panel 6 of the engine generator 1 and is combined with a cam rotor 8 forming an operation mechanism in an inner surface side of a control panel 6 as one body. A micro switch 9 for stopping an engine 2 is provided adjacently to an outer circumference part of the cam rotor 8 and is connected to a choke mechanism 20 of a carburetor 4 via a wire 10a. The engine generator is stopped, operated, and the choke mechanism of the carburetor 4 is operated, by rotating the operation dial 7 to each operation position. Further, recognition of the operation position and operability are improved by generating click feeling at each operation position and click sound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine dial operating dial structure for improving the operability of an engine generator.

[0002]

2. Description of the Related Art Generally, as a general-purpose power supply device used outdoors or the like, an engine including an engine and a generator driven by the engine, as disclosed in JP 2000-328957 A, for example. 2. Description of the Related Art There is a generator, and this engine generator is provided with a control panel in which an operation stop of an engine and an outlet for taking out an output from the generator are arranged.

[0003]

However, in the conventional engine generator, the control panel is provided with an engine switch for turning on the ignition system of the engine, a frequency changeover switch for changing the frequency of the output from the generator, and the like. Furthermore, in order to start the engine when the temperature is low, it is necessary to operate the choke mechanism of the carburetor to prepare for the cold start of the engine. As described above, in the conventional engine generator, not only various switches have to be operated separately, but also the operation of each switch needs to be confirmed separately, which makes the operation complicated.

The present invention has been made in view of the above circumstances, and a series of operations relating to the operation / stop of the engine generator can be easily performed and the operability of the engine generator can be improved. It is intended to provide a structure.

[0005]

In order to achieve the above object, the invention according to claim 1 is an operation dial structure of an engine generator for driving a generator by an engine, wherein the control panel of the engine generator includes: An operating mechanism for performing a series of operations relating to the operation / stop of the engine generator by rotating the operating dial is provided, and the operating mechanism is provided with a click mechanism for generating vibration and sound at each operating position of the operating dial. It is characterized by

According to a second aspect of the present invention, in the first aspect of the invention, the operating mechanism is connected to a choke mechanism of a carburetor which supplies fuel and air to the engine as a mixture. .

According to a third aspect of the present invention, in the first or second aspect of the invention, the operating mechanism is provided with a lock mechanism for restricting rotation at each operating position of the operating dial.

The invention according to claim 4 is the invention according to claims 1, 2, and 3.
In the invention described in any one of above, the operation mechanism is provided with a stopper mechanism for restricting rotation of the operation dial out of an operation position.

That is, according to the first aspect of the invention, a series of operations relating to the operation / stop of the engine generator are performed by rotating the operation dial provided on the control panel, and the operation position is confirmed by vibration and sound. can do.

In this case, it is desirable that the operating mechanism is connected to a choke mechanism of a carburetor that supplies the engine with a mixture of fuel and air, as in the second aspect of the invention. It is possible to easily perform the normal engine starting and the same operation dial.

Further, as in the invention described in claim 3, the operating mechanism is provided with a lock mechanism for restricting rotation at each operating position of the operating dial, or in the operating mechanism as in the invention described in claim 4. It is desirable to provide a stopper mechanism for restricting the rotation of the operation dial to the outside of the operation position, and it is possible to prevent an erroneous operation as a more reliable operation.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 relate to an embodiment of the present invention, FIG. 1 is an explanatory diagram showing a schematic configuration of an engine generator, FIG. 2 is an explanatory diagram showing a state of an operating mechanism when fixed, and FIG. 3 is an operating state. 4 is an explanatory view showing a state of the operating mechanism in a stop position, FIG. 5 is an explanatory view showing a state of the operating mechanism in a driving position, and FIG. 6 is a state of the operating mechanism in a choke position. FIG. 7 is an explanatory view showing the operating position of the choke mechanism.

In FIG. 1, reference numeral 1 is an engine generator, and in the figure, an engine 2, a generator (generator) 3 connected to an output shaft of the engine 2, and an engine 2 are arranged above the engine 2. A fuel tank (not shown) is a soundproof engine generator housed in a substantially box-shaped soundproof cover 50. In the engine 2, a carburetor 4 that mixes fuel and air and supplies the mixture to the engine 2 is connected to an intake port, and a muffler 5 is connected to an exhaust port. Also,
A control panel 6 is provided on an end surface of the soundproof cover 50 on the generator 3 side. The control panel 6 is provided with an outlet (not shown) for taking out a power generation output from the generator 3 and an operation / stop of the engine 2. An operation dial (hereinafter, simply abbreviated as “dial”) 7 to be operated is provided.

The dial 7 is integrally connected to a cam rotor 8 forming an operating mechanism on the inner surface side of the control panel 6, and an ignition circuit (not shown) is short-circuited near the outer peripheral portion of the cam rotor 8 to close the engine 2. A micro switch 9 for stopping is provided. Further, the cam rotor 8 is
It is connected to the choke mechanism 20 of the vaporizer 4 via the wire 10a. The wire 10 a is inserted through the exterior tube 10, one end of the exterior tube 10 is supported by the stay 11 near the cam rotor 8, and the other end is fixed to the carburetor 4.

As shown in FIGS. 2 and 3, the dial 7 and the cam rotor 8 have a shaft 7a at the center of the dial 7 with a mounting plate 12 such as a metal plate disposed inside the control panel 6 interposed therebetween. It is fitted and integrated in the cam rotor 8.
More specifically, the mounting plate 12 is formed with a guide hole 12a whose peripheral edge projects toward the cam rotor 8 side and serves as a rotation guide for the dial 7. The shaft portion 7a of the dial 7 is inserted into the guide hole 12a to insert the cam rotor 8 into the cam rotor 8. The dial 7 and the cam rotor 8 are integrated by being fitted to. The mounting plate 12
A micro switch 9 is fixed to the.

A cam portion 8a for pressing the operation lever 9a of the micro switch 9 is provided on the outer peripheral side portion of the cam rotor 8.
And a stopper portion 8b for restricting the rotation of the dial 7 are formed and projected. As shown in FIGS. 4 to 6, the stopper portion 8b forms a stopper mechanism together with two protrusions 12b provided upright on the mounting plate 12, and the stopper portion 8b.
By contacting the protrusion 12b, the rotation of the dial 7 to the outside of the operating position is restricted. Further, a pulley 13 is fixedly mounted on the upper end surface of the cam rotor 8, one end of the wire 10a is engaged with the pulley 13, and the wire 10a is pulled in accordance with the rotation of the dial 7, that is, the rotation of the cam rotor 8.
Relaxed.

The dial 7 and the cam rotor 8 are mounted on a mounting plate 12 so as to be movable in a predetermined amount in the axial direction, and the shaft portion 7a of the dial 7 is located between the dial 7 and the mounting plate 12. The dial 7 is urged in a direction in which the dial 7 projects to the outside by a spring 14 provided around the periphery. A flange 7b is provided on the outer periphery of the dial 7, and the flange 7b is housed in a panel 6a provided on the front surface of the mounting plate 12, whereby the spring 14
The dial 7 is prevented from coming off due to the urging force of.

Further, the mounting plate 12 has a lock hole 12c for fixing the dial 7 at each operation position, and a click feeling and a click sound due to vibration when the dial 7 is rotated to each operation position. Click hole 12d
Is provided. A plurality of lock holes 12c are provided on the circumference corresponding to each operation position of the dial 7, and a protrusion formed on the end surface of the cam rotor 8 on the side of the mounting plate 12 at a position corresponding to the lock holes 12c on the circumference. Together with 8c, a lock mechanism for restricting rotation of the dial 7 at each operation position is formed. The projection 8c is formed with a diameter smaller than the hole diameter of the lock hole 12c so that it can be moved back and forth with respect to the lock hole 12c.

Similarly, the click hole 12d also has a dial 7
A plurality of holes are provided on the circumference corresponding to the respective operation positions of, and at positions on the circumference corresponding to the click holes 12d of the dial 7,
A spring 15 and a ball 16 that is biased by the spring 15 toward the mounting plate 12 are housed, and a click mechanism that generates a click feeling and a click sound due to vibration is formed at each operation position of the dial 7. . Ball 1
6 has a diameter slightly larger than the diameter of the click hole 12d.

That is, when the dial 7 is stopped at a predetermined operation position, the position of the projection 8c of the cam rotor 8 coincides with the position of the lock hole 12c as shown in FIG.
The position of the ball 16 matches the position of the click hole 12d,
The ball 16 is pressed against the peripheral edge of the click hole 12d by the urging force of the spring 15. Then, when the hand is released from the dial 7 in this state, the protrusion 8c of the cam rotor 8 is retracted into the lock hole 12c by the urging force of the spring 14 and the rotation of the dial 7 is restricted, and the dial 7 is locked at the corresponding operation position. To be done.

When the dial 7 is pushed to release the projection 8c of the cam rotor 8 from the lock hole 12c and the dial 7 is unlocked and rotated, the position of the projection 8c of the cam rotor 8 is changed as shown in FIG. The position of the ball 16 deviates from the position of the click hole 12d as well as the position of the lock hole 12c, and the dial 7 and the cam rotor 8 rotate while the ball 16 slides on the mounting plate 12.

On the other hand, the choke mechanism 20 connected to the pulley 13 at the end of the cam rotor 8 via the wire 10a is arranged coaxially with a choke valve (not shown) inside the carburetor 4, as shown in FIG. Attach the wire 10a to the pulley 21 provided.
The end portions of are engaged. The pulley 21 is provided with a fan-shaped opening 21a. An end of a rotary plate 22 that rotates coaxially with the pulley 21 is brought into contact with a side wall of the opening 21a along the radial direction. A choke valve is interlocked with the plate 22 to open and close. Further, a return spring (not shown) such as a torsion coil spring is interposed in the pulley 21, and the return spring causes the pulley 2 to move.
1 is urged in the direction opposite to the rotation direction by pulling the wire 10a.

In the present embodiment, the operating positions of the dial 7 are three positions of "stop", "drive", and "choke", and as shown in FIGS. A hole 12c and three click holes 12d are formed. Next, the dial operation at each of the "stop", "drive", and "choke" operation positions will be described.

As shown in FIG. 4 (a), when the operation position mark 7c of the dial 7 is at the "stop" position, as shown in FIG.
As shown in (b), the cam portion 8a of the cam rotor 8 is in a position to press the operation lever 9a of the micro switch 9, the micro switch 9 is turned on to ground the ignition circuit (not shown), and the engine 2 is stopped. To do. Further, the stopper portion 8b of the cam rotor 8 is provided with the projection 12b of the mounting plate 12.
Abutting against and rotating the dial 7 in a direction other than the operating position,
That is, rotation in the counterclockwise direction from the state shown in FIG. 4A is disabled.

At the same time, in this "stopped" state, the projection 1 of the mounting plate 12 with which the stopper portion 8b of the cam rotor 8 abuts.
The protrusion 8c of the cam rotor 8 is recessed in the first lock hole 12c located near 2b (see FIG. 2), and the rotation of the dial 7 from the "stop" position to another operation position is locked, and the dial 7 is locked. It is possible to prevent the careless operation of. Further, in this “stop” position, as shown in FIG. 7A, the pulley 21 of the choke mechanism 20 does not rotate the rotary plate 22, and the choke valve of the carburetor 4 is held fully open.

Next, when the dial 7 is rotated from the "stop" position to the "run" position, the dial 7 is pushed in and the projection 8c of the cam rotor 8 is fixed to the lock hole 12 of the mounting plate 12.
After releasing from c and unlocking, the dial 7 is rotated. Then, as shown in FIG. 5 (a), when the operation position mark 7 c of the dial 7 reaches the “driving” position, the ball 16 contained in the dial 7 is pushed by the spring 15 and the click hole 12 d of the mounting plate 12 is pushed. And is pressed against the periphery of the click hole 12d. The vibration that stops when the ball 16 drops into the click hole 12d gives a click feeling to the hand holding the dial 7, and a click sound such as a "click" is obtained, and the operation position of the dial 7 is " It can be confirmed that it has become "driving."

At this time, as shown in FIG. 5 (b), the cam portion 8a of the cam rotor 8 is at the position for releasing the operating lever 9a of the micro switch 9, and the micro switch 9 is in the O position.
It becomes FF and the engine can be started. Further, the position of the second lock hole 12c of the three lock holes 12c of the mounting plate 12 and the position of the protrusion 8c of the cam rotor 8 are aligned, and the protrusion 8c is locked by releasing the hand from the dial 7. It is recessed in the hole 12c and the dial 7 is locked in the "driving" position.

Further, in this operation to the "operating" position, the wire 10a is pulled by the rotation of the cam rotor 8, and as shown in FIG. 7B, the pulley 21 of the choke mechanism 20 is pulled.
The side wall of the fan-shaped opening 21a is separated from the end of the rotary plate 22, and the pulley 21 is rotated to a position where the end of the rotary plate 22 is substantially in contact with the opposite side wall (rotated counterclockwise in FIG. 7). To do. That is, within the range of the fan-shaped opening 21a, only the pulley 21 moves freely and the rotary plate 22 does not rotate, so that the choke valve of the carburetor 4 is held fully open, as in the "stop" position. Then, by pulling and rotating the recoil starter of the engine generator 1 to start the engine 2, the power generation output from the generator 3 can be obtained.

Next, when the engine generator 1 is used at a low temperature, the dial 7 is rotated to the "choke" position to close the choke valve of the carburetor 4 and start the engine 2. In this case, after the dial 7 is pushed in to release the lock, the dial 7 is rotated, and the hand is released from the dial 7 at the position where the click feeling and the click sound of the ball 16 are obtained. ), The operation position mark 7c of the dial 7 is locked at the "choke" position.

That is, in the "choke" position, FIG.
As shown in (b), when the position of the third lock hole 12c of the three lock holes 12c of the mounting plate 12 and the position of the protrusion 8c of the cam rotor 8 match, and the hand is released from the dial 7, The protrusion 8c is recessed in the lock hole 12c, and the dial 7 is locked at the "choke" position. Further, in this “choke” position, the stopper portion 8 of the cam rotor 8 is
b comes into contact with the other protrusion 12b of the mounting plate 12, and further rotation of the dial 7, that is, clockwise rotation from the state shown in FIG.

At this time, the cam portion 8a of the cam rotor 8 is in a position where the operating lever 9a of the micro switch 9 is released, and the pulling of the wire 10a accompanying the rotation of the cam rotor 8 causes the pulley 21 of the choke mechanism 20 to rotate. Figure 7
As shown in (b), the side wall of the fan-shaped opening 21a presses the end of the rotary plate 22 to rotate the rotary plate 22 and close the choke valve of the carburetor 4. That is, the micro switch 9 is turned off to enable the ignition circuit and the choke valve of the carburetor 4 is closed, so that the engine 2 can be easily started even at a low temperature. Then, after the engine 2 is started, the choke valve of the carburetor 4 is automatically opened according to the progress state of warm-up by returning the dial 7 to the "operating" position.

Thereafter, to stop the engine 2, the dial 7 is returned to the "stop" position, the cam rotor 8 and the choke mechanism 20 are returned to the "stop" position, the micro switch 9 is turned on, and the ignition circuit is short-circuited. Then, the engine 2 is stopped by the ignition cut, and the power generation of the generator 3 is stopped. When the dial 7 is returned from the "choke" position to the "stop" position to stop the engine 2, the pulley 21 of the choke mechanism 20 is rotated counterclockwise by the return spring, as shown in FIG. 7 (d). Through the state,
The rotary plate 22 is rotated counterclockwise through the side wall of the opening 21a, and the choke valve is fully opened at the "stop" position.

Thus, a series of operations such as the normal start of the engine 2, the choke operation of the carburetor 4 in the cold state, and the stop of the engine can be easily performed by rotating one dial 7, and each operation is performed. The position can be clearly recognized by the click feeling and the click sound, and the operability can be improved.

The dial 7 is used in this embodiment.
Although the example of assigning the operation of the engine 2 of “stop”, “operation”, and “choke” has been described above, it is also easy to add another operation position, for example, an operation position for switching the frequency of the power generation output.

[0035]

As described above, according to the present invention, a series of operations relating to the operation / stop of the engine generator can be easily performed by rotating one operation dial, and each operation position can be changed. The click feeling and the click sound can be clearly recognized, and the operability can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of an engine generator.

FIG. 2 is an explanatory view showing a state of an operation mechanism when fixed.

FIG. 3 is an explanatory diagram showing a state of an operation mechanism during operation.

FIG. 4 is an explanatory diagram showing a state of the operating mechanism at a stop position.

FIG. 5 is an explanatory diagram showing a state of an operating mechanism at a driving position.

FIG. 6 is an explanatory diagram showing a state of an operating mechanism at a choke position.

FIG. 7 is an explanatory view showing the operating position of the choke mechanism.

[Explanation of symbols]

1 engine generator 2 engine 3 generator 4 vaporizer 6 control panel 7 operation dial 8 cam rotor 8b Stopper part 8c protrusion 12 Mounting plate 12b protrusion 12c lock hole 12d click hole 15 spring 16 balls 20 Choke mechanism

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3J070 AA14 BA02 BA03 BA07 BA10                       BA12 BA35 BA41 BA51 CB11                       CC12 CC22 CD01 CD21 CD32                       CD33 CD35 CE01 DA70 EA11

Claims (4)

[Claims] 1. An operation dial structure of an engine generator for driving a generator by an engine, wherein a series of operations for operating and stopping the engine generator are performed on a control panel of the engine generator by rotating the operation dial. An operation dial structure for an engine generator, comprising an operation mechanism, wherein the operation mechanism is provided with a click mechanism for generating vibration and sound at each operation position of the operation dial. 2. The operation dial structure for an engine generator according to claim 1, wherein the operation mechanism is connected to a choke mechanism of a carburetor which supplies fuel and air to the engine as a mixture. 3. The operation dial structure for an engine generator according to claim 1, wherein the operation mechanism is provided with a lock mechanism for restricting rotation at each operation position of the operation dial. 4. The engine generator according to claim 1, wherein the operation mechanism is provided with a stopper mechanism for restricting rotation of the operation dial out of the operation position. Operation dial structure.