JPS6211326Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing device for opening and closing a fuel pot provided in a fuel pipe that communicates a fuel tank and a carburetor of an engine.

Conventionally, in this type of fuel pot opening/closing device, the fuel pipe was opened and closed by turning a knob handle provided directly on the fuel pot.

For this reason, if the engine is transported without remembering to close the fuel tank even after the engine has stopped, the carburetor will oscillate and oversupply fuel, making it difficult to restart the engine.

This invention is designed to link the fuel pot to the throttle lever so that the fuel pot closes when the throttle lever is operated to the closed position, eliminating the need to forget to tighten the fuel pot and restarting the carburetor due to excessive supply. The purpose of this invention is to provide a fuel pot opening/closing device which can be easily manufactured by replacing only the normally used fuel pot arm. Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, numeral 1 indicates a chemical sprayer, which is constructed as follows. That is, reference numeral 2 denotes a blowing fan driven by an engine 3, which mixes the chemical in the chemical tank 5 into the air and blows it from the blowing port 7 through the blowing pipe (not shown) and from the spray nozzle (not shown). It is meant to be dispersed. 9 is the recoil star of engine 3, 11 is the cylinder cover, 13
1 is a muffler cover, 15 is a carburetor, 17 is an air cleaner, and 19 is a fuel tank. 21 is a back rest for the worker to carry on his or her back; 23 is a base fixed to the back rest. 25 is a bracket fixed to the side of the blower fan 2 by screws 27, 27;
is a shaft 31 supported horizontally on the bracket 25.
The throttle lever is swingably supported by the throttle lever, and the throttle wire 35 is connected to the arm 33 provided at the other end.
One end of is locked. Throttle wire 3
The other end of 5 is connected to a throttle device 37 of the carburetor 15. Reference numeral 39 denotes a metering lever rotatably pivoted to a shaft 31 in line with the throttle lever 29, and a metering wire 43 is attached to an arm 41 provided at the other end.
One end of is locked. The other end of the metering wire 43 is connected to an arm 45 for opening and closing a shutter (not shown) provided below the drug tank 5 for adjusting the amount of drug. Reference numeral 47 is fixed to the bracket 25 with a fuel tank provided in the middle of a fuel pipe 49 extending from the fuel tank 19 to the carburetor 15. Reference numeral 51 denotes an actuating piece that is fixed to the valve shaft 53 of the fuel cock 47, and is formed in a shape in which two orthogonal arms 55, 57 are fixed to each other.
When the throttle lever 29 rises, the throttle lever 29 contacts the arm 55 and opens the fuel pot 47, and when the throttle lever 29 descends, the arm 57 is pushed down and the fuel pot 47 is opened. is set up to close. The throttle device 37 opens when the throttle lever 29 swings upward, and closes when the throttle lever 29 swings downward. A guide plate 59 is fixed to the bracket 25 and has guide holes 61 and 63 for guiding the throttle lever 29 and metering lever 39, respectively.

In the embodiments described above, the worker carries the chemical sprayer 1 on his back by hanging the shoulder strap (not shown) provided on the back support 21 on his shoulder, but the worker carries the chemical sprayer 1 on his back while carrying out the work. The rotation speed of the engine 3 is appropriately adjusted by swinging the torque lever 29 up and down, and the amount of medicine is adjusted by operating the metering lever 39 to operate a shutter (not shown). An operating piece 51 of the fuel cock 47 is linked to the throttle lever 29, and the throttle lever 29 is opened when the engine 3 is operated in a direction to increase the rotational speed, and closed when the throttle lever 29 is operated in a direction to stop the engine 3. It is something to do.
Therefore, the fuel tank 47 is always closed when the engine is stopped.

Since the present invention has the configuration as described in the claims, it is possible to avoid forgetting to tighten the fuel plug after stopping the engine, and to easily restart the engine, and in addition, it is possible to easily restart the engine. The structure can be easily manufactured by simply replacing the parts.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Figures 1 and 2 are a side view and a front view of a chemical sprayer equipped with a device according to the present invention, respectively, and Figures 3, 4, and 5 are side sectional views of an embodiment of the present invention, respectively. , a front sectional view, and a plan sectional view. Explanation of the symbols representing the main parts of the drawing, 3...
Engine, 15... Carburizer, 19... Fuel tank, 29... Throttle lever, 37... Throttle device, 47... Fuel cock, 49... Fuel pipe, 51... Operating piece, 53... Valve shaft ,55,5
7...Arm.

Claims (1)

[Scope of utility model registration request] A fuel pot 47 is provided in a fuel pipe 49 that communicates between the fuel tank 19 and the carburetor 15, and a swingable throttle lever 29 that is linked to the throttle device 37 of the engine 3 is provided. 53, the valve stem 5
An actuation piece 51 is provided for opening and closing the fuel pot 47 by rotating the actuation piece 51. 55, 57
A fuel tank opening/closing device characterized in that said throttle levers 29 are provided so as to be able to freely come into contact with said throttle levers 29 so as to alternately traverse the locus of movement of said throttle levers 29.