JPS631001Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a structure for attaching and detaching a carburetor, which is composed of a three-tiered structure consisting of a float chamber cover, a mixing body, and a throttle body.It simplifies the work of attaching and detaching the carburetor, and also makes it possible to easily attach and detach the carburetor after it has been installed on the engine. The purpose of the present invention is to provide a vaporizer of this type that can be serviced with improved serviceability such as parts replacement and adjustment.

A carburetor, mainly a compound carburetor, is constructed by sequentially connecting a float chamber cover, mixing body, and throttle body in three stages. Since screws such as bolts are usually used, the quality of the connection structure greatly affects not only the workability of attaching and detaching the carburetor, but also serviceability such as parts replacement and adjustment after the carburetor is attached to the engine.

However, in the past, as shown in FIG. 1, each of the above-mentioned parts, that is, the connection parts of the float chamber cover 1, mixing body 2, and throttle body 3, was connected separately to the engine (manifold) 4, and only the float chamber cover was connected separately. is machine screw 5
The other parts can be tightened with bolts 6, or the lower part of the mixing body 2 and the throttle body 3 can be jointly tightened with bolts 7 only for attachment to the engine 4, as shown in FIG. As described above, only the float chamber cover 1 was attached to the mixing body 2 with machine screws 5 in the same manner as described above, and was further tightened to the engine 4 with bolts 8 through three stages.

As shown in Figures 1 and 2, the tightening part is at the bottom, so it is difficult to install with an impact wrench, and the item shown in Figure 3 can be attached and removed using an impact wrench. However, when removing the float chamber cover 1, the entire carburetor must be removed, which requires time to replace and adjust the float system, main jet, etc., which not only lacks serviceability, but also removes the float chamber cover 1. Since the bolts are tightened with thin screws 5 and thick bolts 8 are used for joint tightening, there are drawbacks such as deformation of the surface of the packing 9 due to force balance.

In view of the above points, the present invention is a carburetor consisting of a three-tier stack of a float chamber cover, a mixing body, and a throttle body, in which the mixing body and throttle body are jointly fastened to the engine with bolts on the top surface of the mixing body. , the float chamber cover is attached to the top of the mixing body using separate screws, and can be attached and detached using an impact wrench.
What's more, the unique feature is that only the float chamber cover can be attached and detached freely and independently.

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

FIG. 4 is a plan view of the carburetor of the present invention, and FIG. 5 is a side view of the same.
14 is a throttle body, 15 is an insulator packing, and 16 is a packing interposed on the joint surface of each of the above parts, and the above is composed of a float chamber cover 10, a mixing body 12, and a throttle body 14 stacked in three stages. It's a vaporizer.

The present invention provides a carburetor as described above, in which the mixing body 12 and the throttle body 14 are connected from above, independently of the float chamber cover 10, by a long bolt 18 that reaches the engine, with the upper surface 17 of the mixing body 12 serving as a seating surface for the bolt 18. The float chamber cover 10 is attached to the upper surface 17 of the mixing body 12 with separate screws 20 so that it can be fastened together with the engine, that is, the intake manifold 19, and the float chamber cover 10 can be freely and independently attached and detached from above. corresponds to the co-tightened portion by the bolts 18, and the outer side of the upper and lower flange portions 21 of the mixing body 12 and the throttle body 14.
Brackets 23 and 24 each having a through hole 22 for the bolt 18 are formed at three locations on the outside of the bracket.
A case in which they are jointly tightened through these brackets is shown.

With this configuration, the carburetor can be fastened together with the engine, and can be attached and detached using an impact wrench, and even after the carburetor is attached to the engine, only the float chamber cover can be removed independently. This speeds up maintenance work on the main jet, float system, choke system, ventilate system, etc., and even though the carburetor itself is a co-locking type, there is no need to worry about deteriorating the seal between the float chamber cover and the mixing body. .

As mentioned above, according to the present invention, although the carburetor itself is a co-closing type, not only the float chamber cover can be easily and independently removed, but also the sealing between the float chamber cover and the mixing body is improved. There is no fear of deteriorating the
Moreover, since it can be attached and detached using an impact wrench, work efficiency can be greatly improved.Also, even after the carburetor is installed on the engine, only the float chamber cover can be removed separately, so the main jet, float system, and choke system,
This type of carburetor exhibits excellent effects, such as being able to improve serviceability such as replacing and adjusting various parts such as the ventilate system.

[Brief explanation of the drawing]

1 to 3 are side views showing the tightening structure of a conventional carburetor, FIG. 4 is a plan view showing an embodiment of the carburetor of the present invention, and FIG. 5 is a side view of the same. 10...Float chamber cover, 12...
Mixing body, 14...Throttle body,
17...Top surface of mixing body, 18...Bolt, 19...Intake manifold (engine),
20...Screw.

Claims (1)

[Scope of utility model registration request] In a carburetor consisting of a three-tier stack of a float chamber cover, a mixing body, and a throttle body, only the float chamber cover is detachably attached to the upper surface of the mixing body via a screw that can be tightened from above. The mixing body and the throttle body are configured such that only the mixing body and the throttle body are jointly attached to the engine from above, independently of the float chamber cover, by bolts reaching the engine, with the upper surface of the mixing body serving as a seating surface for the bolts. A vaporizer characterized by: