JPH0143497Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides an adjustment hole facing the adjustment screw of the carburetor in the cover that covers the side of the engine carburetor, and a tool that passes through this adjustment hole and rotates the adjustment screw. This invention relates to a carburetor adjustment device that is provided with a horizontal guide tube for guiding.

Conventionally, when adjusting the carburetor with a tool such as a screwdriver through the adjustment hole from the outside of the cover, the aforementioned guide tube is provided to guide the tip of the screwdriver to the adjustment screw to facilitate engagement. However, dust tends to accumulate inside the guide cylinder, and as a result, the dust inside the guide cylinder prevents the screwdriver tip from engaging the adjustment screw, making adjustment impossible.
For this reason, cleaning has been performed without disassembling the cover and removing the guide tube.

In the present invention, an adjustment screw is provided surrounding the tip of the guide cylinder, and a discharge hole is cut out at the bottom of the tip to discharge dust, thereby making it easier to discharge dust and adjust the carburetor. The purpose is to make it easier to perform and improve work efficiency.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, 1 indicates a carburetor attached to an engine (not shown). 3 is an air cleaner that communicates with the intake side of the carburetor 1; 5 is an air passage of the carburetor 1, which communicates the intake port (not shown) of the engine with the air cleaner 3; Reference numeral 7 denotes a rotating shaft of a check valve 9 for opening and closing the air passage 5. A check arm 11 is fixed to the outer end of the rotary shaft 7, and an operating rod 13 that interlocks with a check lever (not shown) is connected thereto. 15
is fixed to a throttle valve (not shown) by another rotating shaft arranged parallel to the back of the rotating shaft 7, and operated in conjunction with a throttle lever (not shown) at a throttle arm 17 at the outer end. Connected to rod 19. Reference numeral 21 denotes a bullet that urges a throttle valve (not shown) in the closing direction. 23 is a fuel tank, 25
2 is a fuel pipe, and 27 is a cover that covers the side surface of the carburetor 1 of the engine. 29 and 31 are adjustment screws for adjusting the idle and high speed nozzle passages, respectively; 33 is an adjustment screw for adjusting the opening amount of a throttle valve (not shown);
This is to adjust the rotation restriction position of the locking piece 35 fixed to the end of the locking piece 5. 37, 39, and 41 are located at positions facing the adjustment screws 29, 31, and 33, respectively;
This is an adjustment hole provided in the cover 27. However, the adjustment hole 39 is not shown. Reference numeral 43 denotes a guide body made of synthetic resin, and horizontal guide cylinders 45, 47, 49 whose tips are engaged with adjustment screws 29, 31, 33 are connected to 1.
formed in the body. Guide cylinder 45, 47, 49
The other end faces the adjustment holes 37, 39, 41 in close proximity. In this embodiment, the guide cylinders 45 and 47 are formed into one elliptical cylinder. 5
Reference numeral 1 indicates a discharge hole opening at the lower part of the guide tubes 45 and 47, and reference numeral 53 indicates a discharge hole provided by cutting out the lower part of the tip of the guide tube 49. Reference numeral 55 denotes a locking piece integrally formed so as to protrude from the lower surface of the guide body 43, and is locked to the main body case 57 to prevent the guide body 43 from coming off.

In the embodiments described above, to adjust the carburetor, for example, when a driver is inserted through the adjustment hole 37, it is guided by the guide tube 45 and comes into contact with the adjustment screw 29. By rotating the driver, the tip engages the groove of the adjustment screw 29 and adjustment can be made. To attach and detach the guide body 43, remove the cover 27, then bend the locking piece 55 to attach and detach the guide body 43, and also lock the locking piece 55 to the main body case 57. For example, the guide body 43 can be easily fixed.

Note that when dust or the like accumulates inside the guide tube 45, a screwdriver or the like can be inserted through the adjustment hole 37 of the cover to push out the dust from the discharge hole 51.
The dust inside the guide cylinder can be easily discharged.

Since the present invention has the configuration as described in the claims, it is possible to easily adjust the carburetor from the outside of the cover, and it is also possible to easily discharge dust that accumulates inside the guide cylinder. be.

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]

Figure 1 is a side sectional view of one embodiment of the present invention;
3 and 4 are enlarged side views, front views, and rear views of essential parts, respectively, and FIG. 5 is a plan cross-sectional view taken along the line -- in FIG. 2. Explanation of the symbols representing the main parts of the drawing, 1...
Carburetor, 27... Cover, 29, 33... Adjustment screw, 37, 41... Adjustment hole, 45, 49... Guide tube, 51, 53... Discharge hole.

Claims (1)

[Scope of utility model registration request] A cover 27 that covers the side of the engine carburetor 1
are provided with adjustment holes 37 and 41 facing the adjustment screws 29 and 33 of the carburetor 1, and the adjustment holes 37 and 4
1 for guiding a tool that rotates the adjusting screws 29, 33;
49, the adjusting screws 29, 33 are provided at the distal ends of the guide tubes 45, 49 to surround the adjustment screws 29, 33, and the guide tubes 45, 4
9. A vaporizer regulating device characterized in that the lower part of the tip of the carburetor 9 is cut out to provide discharge holes 51 and 53 for discharging dust.