JPS6211325Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides three operations in the engine: opening and closing of the fuel tank, ON/OFF operation of the starting switch, and operation of controlling the rotational speed of the engine. The present invention relates to a motor operation control device that can be easily controlled by a machine.

In conventional engines, the opening/closing operation of the fuel tank, the ON/OFF operation of the starting switch, and the control operation of the engine rotation speed are generally performed using separate operation knobs. For this reason, each of the three operations described above takes time and effort, making it extremely troublesome.

The present invention was developed in view of the above circumstances, and its purpose is to provide a motor operation control device that allows the above three operations to be easily performed with a single rotary operation knob for a starting switch. There is a particular thing.

The basic structure of the present invention is characterized by a fuel pot opening/closing lever that is fixed to the rotating shaft for the fuel pot, and a first rotating position that turns the engine OFF and a lever that turns the engine ON by rotating in one direction. a rotary operation knob for a start switch capable of assuming a second rotation position and a third rotation position; a first toothed lever fixed to a rotation shaft of the rotation operation knob;
A first link and a second link connecting the toothed lever and the fuel cock opening/closing lever are rotated to a position where they can engage when the first toothed lever reaches a second rotation position. a second toothed lever freely provided and connected to the governor; one end of the second link is pivotally connected to the fuel cock opening/closing lever, and the other end of the second link is one end of the first link via a second fulcrum, the other end of the first link pivoted to the first toothed lever via a third fulcrum; The distance between the third fulcrum and the second fulcrum is equal to the distance between the first fulcrum, which is the center of rotation of the rotary operation knob, and the third fulcrum, and the first toothed lever and A hook portion is formed on one side of the second link, and a projection portion that engages with the hook portion is formed on the other side, so that the first toothed lever is moved from the first rotation position to the second rotation position. When the first link and the second link are rotated to , the first link and the second link are moved together without relative rotation, and the second fulcrum is aligned with the first fulcrum at a second rotation position. Further, the first toothed lever and the first link are configured such that the first toothed lever and the first link come into contact with each other when the rotary operation knob is rotated from the second rotation position to the third rotation position. A contacting stopper portion is formed so that the second fulcrum is rotated integrally with the first toothed lever in a state where the second fulcrum is aligned with the first fulcrum.

An embodiment of the present invention will be described below with reference to the drawings. This example is applied to a portable small-sized motor generator, and is configured so that the frequency of the generated voltage can be easily switched between 50 Hz and 60 Hz by controlling the rotation speed of the engine. ing.

In FIGS. 1 and 2, a fuel pot opening/closing lever 2 for opening and closing the fuel pot is fixed to the right end of a rotating shaft 1 connected to a fuel pot (not shown), and is used to turn a starting switch 3 on and off. A substantially fan-shaped first toothed lever 5 is fixed to the rotation shaft 4a of the rotation operation knob 4 coaxially therewith. By rotating the rotary operation knob 4 in one direction, it can sequentially move from the first rotation position where the engine is turned off, to the second rotation position and third rotation positions A and B where the engine is turned on. has been done. The first toothed lever 5 has a hook portion 5a and a tooth portion 5b, and the first toothed lever 5 and the fuel pot opening/closing lever 2 are connected to a first link 6 and a second link 7.
connected by. That is, the lower end of the second link 7 is pivotally connected to the tip of the fuel cock opening/closing lever 2, and the upper end of the second link 7 is connected to the lower end of the first link 6 via the second fulcrum 7b. Further, the upper end of the first link 6 is pivotally connected to the first toothed lever 5 via a third fulcrum 6b. The distance from the third fulcrum 6b to the second fulcrum 7b is made equal to the distance from the first fulcrum 4b, which is the center of rotation of the rotary operation knob 4, to the third fulcrum 6b. Both the protrusion 6a provided on the first link 6 and the protrusion 7a provided on the second link 7 are engaged with the hook 5a of the first toothed lever 5. When the first toothed lever 5 is rotated from the first rotation position to the second rotation position about the first fulcrum 4b, the first link 6 and the second link 7 are rotated relative to each other. With the rotation of the first toothed lever 5, it is moved integrally with the first toothed lever 5, and the second rotational position (see FIG. 3), that is, the second fulcrum 7b is moved to the first fulcrum 4b.
In this state, the engagement between the protrusion 7a of the second link 7 and the hook 5a of the first toothed lever 5 is released, and the first toothed lever 5 is then rotated by the rotation operation knob 4. from the second rotational position to the third rotational position via
Only the first link 6 can move integrally with the first toothed lever 5 as it rotates to the rotation position A. The state of the third rotation position A, that is, the state of the first
While the protrusion 6a of the link 6 is abutted and engaged with the hook 5a of the first toothed lever 5, it moves to the second fulcrum 6b.
is aligned on the first fulcrum 4b and the first
The link 6 rotates integrally with the first toothed lever 5 about the second fulcrum 6b. Here, when the second fulcrum 7b coincides with the first fulcrum 4b, the fuel cock opening/closing lever 2 is open and the starting switch 3 is also in the engine ON state.

In addition, in the second rotational position, the first toothed lever 5 is adapted to mesh with the substantially fan-shaped second toothed lever 8. That is, the second toothed lever 8 has a protruding portion 8a for engagement and a toothed portion 8b, and when the first toothed lever 5 is rotationally displaced to the second rotation position, the first toothed lever 8 The second toothed lever 8 is rotatably provided at a position where the toothed portion 5b of the toothed lever 5 and the toothed portion 8b of the second toothed lever 8 can mesh with each other. The convex portion 8a of the second toothed lever 8 has a lower end that can come into contact with the surface of a leaf spring 10 fixedly attached to the lower part of the board 9.
is formed into a substantially L-shaped side surface, and a recess 10a is provided at one point in the middle of its vertical surface so that the protrusion 8a can engage with the recess.

A governor spring locking lever 11 is attached to the second toothed lever 8 so that its position can be adjusted with respect to the second toothed lever 8. That is, the governor spring retaining lever 11 has two inclined parts 1.
1a and 11b are provided, and the relative position of the governor spring retaining lever bar 11 with respect to the second toothed lever 8 can be finely adjusted by a fine adjustment screw 12a that presses and holds the inclined portion 11a. Further, when the second toothed lever 8 is rotated via the first toothed lever 5 to the third rotation position B shown in FIG. 5, as shown in FIG. ,
Slanted portion 11b of governor spring retaining lever 11
comes into contact with the fine adjustment screw 12b, so that the second
The position of the toothed lever 8 is regulated. The left end of the governor spring 13 is engaged with the governor spring retaining lever 11, and the right end of the governor spring 13 is connected to a throttle valve (not shown) via a governor arm 14 and the like.

Note that the aforementioned start switch 3 is connected to the second link 7.
When pressed by the protrusion 7a, the engine is turned off, and when it is not pressed, the engine is turned off.
It becomes ON. In this case, the start switch 3 changes from the engine OFF to the engine ON after the fuel lock opening/closing lever 2 opens as the first toothed lever 5 rotates, and then, with a slight delay, the start switch 3 changes from the engine OFF to the engine ON. 3 is set to turn on the engine. FIG. 1 shows a state in which the fuel cock opening/closing lever 2 is closed, the start switch 3 is turned OFF the engine, and the governor spring 13 is loosened.

Next, the operation of the generator-motor operation control device configured as described above will be explained.

First, the first toothed lever 5 is rotated from the first rotation position shown in FIG. 1 to the second rotation position shown in FIG. 3 via the rotation operation knob 4 for the start switch 3. Then, the second fulcrum 7b becomes the first fulcrum 4.
b. At this time, the fuel lock opening/closing lever 2 is open, the pressure on the start switch 3 by the protrusion 7a of the second link 7 is released, the engine is turned on, and the generator motor is started. . At this time, the governor spring locking lever 11 does not swing at all, so the governor spring 13 still remains in a loosened state, and the engine is idling.
Also, at this time, the projection 7b of the second link 7 disengages from the hook 5a of the first toothed lever 5, so that from now on, as the first toothed lever 5 rotates, only the first link 6 is connected to the second fulcrum 7b.
It rotates integrally with the first toothed lever 5 about the center.

When the first toothed lever 5 is further rotated in the clockwise direction in FIG. The second toothed lever 8 is rotated counterclockwise in FIG. 3, and the convex portion 8a of the second toothed lever 8 engages with the concave portion 10a of the leaf spring 10 in a concave-convex manner, as shown in FIG. Therefore, since the governor spring latching lever 11 is swung by a predetermined amount in the counterclockwise direction together with the second toothed lever 8, the governor spring 13 latched thereto is also pulled to the left by that amount. is maintained at a constant rotation speed n ₁ in balance with a governor mechanism (not shown).
(The frequency is 50 hertz).
In this case, the constant rotational speed n ₁ can be finely adjusted via a fine adjustment screw 12a that presses and holds the inclined portion 11a of the governor spring retaining lever 11.

Furthermore, as the first toothed lever 5 is rotated clockwise in FIG. The convex portion 8a of the toothed lever 8 of No. 2 is connected to the plate spring 1.
0 is released from the concave-convex engagement with the concave portion 10a, and is displaced downward to abut and engage with the vertical surface of the leaf spring 10, and assumes the third rotation position B. This state is shown in FIG. Therefore, the governor spring latch lever 1
1 is further oscillated in the counterclockwise direction, the governor spring 13 is further pulled to the left, and the generator motor is operated at a constant rotation speed n ₂ (>n ₁ ) (frequency is 60 Hz) that is larger than before. The Rukoto. In this case, the second toothed lever 8 applies force in the counterclockwise direction in FIG. 5 due to the spring force of the leaf spring 10;
b is regulated by the fine adjustment screw 12b, so that the governor spring retaining lever 11 stably stops at a predetermined position. Therefore, the constant rotation speed n ₂ can be finely adjusted via the fine adjustment screw 12b.

In addition, in the above example, the operating speed of the engine is 50.
Although the two-speed transmission is used to accommodate two-speed switching between Hertz and 60 Hertz, the present invention is of course not limited to this, and the number of gears of the engine can be varied from one constant speed to three-speed and four-speed. It may also be configured to change gears or the like.

As described above, according to the present invention, the three operations of opening/closing the fuel tank, turning the starting switch on and off, and controlling the engine rotation speed can be performed with a single rotary operation knob for the starting switch. This greatly improves the operability of engine operation control compared to conventional methods.Furthermore, when the start switch is turned OFF, the fuel tank is automatically closed.
This has the effect of reliably preventing forgetting to tighten the fuel plug.

[Brief explanation of the drawing]

Figures 1 and 2 are a front view and a left side view of essential parts, respectively, showing an embodiment of the present invention, and Figures 3, 4, and 5 are a first toothed lever and a toothed lever according to the present invention. FIG. 6 is a front view of the main part showing the state of engagement with the toothed lever No. 2 in this order over time, and FIG. 6 is a top view of the main part showing the state of engagement between the inclined part and the fine adjustment screw according to the present invention. 1...Rotating shaft, 2...Fuel cock opening/closing lever,
3...Start switch, 4...Rotary operation knob, 4
b...First fulcrum, 5...First toothed lever, 5
a... Hook part, 6... First link, 6a...
Projection, 6b...Third fulcrum, 7...Second link, 7a...Protrusion, 7b...Second fulcrum, 8...
...Second toothed lever, 13...Governor spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A fuel pot opening/closing lever fixed to the rotating shaft of the fuel pot, and a second rotation position in which the engine is turned on by rotation in one direction from the first rotation position where the engine is turned off. a rotary operation knob for a start switch that is capable of taking a rotational position and a third rotational position; a first toothed lever fixed to a rotating shaft of the rotational operation knob; and the first toothed lever. and a first link and a second link connecting the fuel pot opening/closing lever, and a first link and a second link that are rotatably provided at a position where the first toothed lever can engage with the first toothed lever when the lever comes to a second rotational position. a second toothed lever connected to the governor; one end of the second link is pivotally connected to the fuel cock opening/closing lever, and the other end of the second link is connected to the second toothed lever. one end of the first link is pivotally connected via a fulcrum, the other end of the first link is pivotally connected to the first toothed lever via a third fulcrum, and the third The distance between the fulcrum and the second fulcrum is equal to the distance between the first fulcrum, which is the center of rotation of the rotary operation knob, and the third fulcrum, and the first toothed lever and the second The first toothed lever is rotated from a first rotation position to a second rotation position by forming a hook portion on one side of the link and a protrusion portion that engages with the hook portion on the other side. When the first link and the second link are moved together without relative rotation, the second fulcrum is configured to coincide with the first fulcrum at a second rotation position. Further, the first toothed lever and the first link are formed with stopper portions that come into contact with each other when the rotary operation knob is rotated from the second rotation position to the third rotation position. Then, with the second fulcrum aligned with the first fulcrum, the first link rotates integrally with the first toothed lever about the second fulcrum. A motor operation control device characterized by: