JPH0134668Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protection device for preventing fuel discharged from a drain tank of a carburetor from adhering to a spark plug cap of an engine attached to, for example, a portable device.

Generally, in many engines installed in the above-mentioned portable devices, the fuel tank is installed at the top of the engine body and the spark plug is installed at the bottom of the engine for the purpose of compactness. In this case, since the exhaust system is provided on one side of the engine body, the spark plug is installed below the carburetor installed on the opposite side of the engine body, and the spark plug is equipped with dustproof and shockproof A spark plug cap made of electrically insulating rubber or the like is installed to protect the spark plug from electrical damage.

By the way, when adjusting the engine or storing it for a long period of time, the carburetor may open the drain tank attached to the bottom of the carburetor while it is attached to the engine body to drain the fuel inside the carburetor.

In this case, there is a risk that fuel may adhere to the spark plug cap and cause the cap to deteriorate.For this reason, it is possible to use a spark plug cap made of a material with excellent oil resistance, but this has the disadvantage of being expensive.

The present invention was made in view of the above points, and an oil guide plate is provided between the drain stock of the carburetor and the spark plug cap to partition the two and guide the fuel discharged from the drain stock to the outside. The purpose of this is to prevent the spark plug cap from adhering to the spark plug cap.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the engine 1 includes an engine body 2, a fuel tank 3 placed on the top of the engine body 2, a carburetor 4 attached to one side of the engine body 2, and an engine body 2. The fuel tank 3 is removably attached to the engine body 2 by a band 6, with the exhaust system 5 attached to the other side being the main body. The above carburetor 4 is
An air cleaner 8 is connected to the intake side, and a drain tank 9 is fixed to the lower part. Note that, although the illustrated example shows a structure in which the drain socket 9 is opened by pushing up the operating handle 10 against the spring 11, the drain kettle 9 is of course not limited to this.

The cylinder 12 of the engine main body 2 is covered with a cylinder cover 13.
A spark plug 15 is attached to the carburetor 4 side at the bottom of the spark plug 15, tilting downward and toward the carburetor 4 side, and a spark plug cap 16 made of an electrically insulating cushioning material such as rubber is attached to the spark plug 15. has been done.

Reference numeral 17 denotes an oil guide plate whose base is fixed to the cylinder cover 13, inserted between the drain tank 9 and the spark plug cap 16, and is inclined with its tip positioned downward. As shown in FIG.
8 and 18 are bent upward to form a gutter-like shape, and the tip portion has a length slightly extending from the lower position of the drain stock, and the oil guide plate 17 has a width sufficient to cover the upper surface of the spark plug cap 16. A spark plug cap protection device 2 which covers the spark plug cap 16 while separating it from the drain stock 9 and guides the fuel discharged from the drain stock 9 to the outside of the engine 1.
0 is formed. Due to this, Drenkotoku 9
When the oil guide plate 17 is opened, the fuel discharged is
and therefore spark plug cap 1
6 can be prevented from adhering to fuel.

As described above, according to the present invention, the drain stock and the spark plug cap are separated by the oil guide plate, and the fuel discharged from the drain stock is guided outward, so that the fuel adheres to the spark plug cap. This is effective in preventing deterioration of the cap.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, in which Figure 1 is a side view of the entire engine, Figure 2 is a front view thereof, and Figure 3 is a side view of the entire engine.
The figure is a sectional view taken along the - line in FIG. 2. 1...Engine, 2...Engine body, 4...
Carburetor, 9... Drain stock, 13... Cylinder cover, 15... Spark plug, 16...
Spark plug cap, 17...oil guide plate, 20
...Protective device.

Claims (1)

[Scope of utility model registration request] A carburetor with a drain tap at the bottom is attached to one side of the engine body, a spark plug is attached to the carburetor side of the lower part of the engine body at an angle to the carburetor side, and a spark plug cap is attached to the spark plug. In an engine equipped with a spark plug, the cylinder cover of the engine body has an oil guiding plate formed in a gutter shape and having a width that covers the spark plug cap between the drain stock and the spark plug cap to remove the drain. A protection device for an engine spark plug cap, characterized in that it is installed so as to guide the engine.