JPH088304Y2 - Connection device between carburetor and air cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a coupling device for a carburetor and an air cleaner, and particularly, this coupling requires no space and is simple and reliable and efficient. In addition, the present invention relates to a connecting device in which the air from the air cleaner to the carburetor is well sealed and supplied.

[Conventional technology]

By the way, as a prior art example concerning a connecting device between a carburetor and an air cleaner, Japanese Utility Model Publication No. Sho 55-76457 discloses an elastic cylinder having a circumferential groove on the outer periphery and a rear end widened like a trumpet. The peripheral groove of the elastic cylinder is fitted into the inner collar provided in the outlet of the cylinder and connected to the air cleaner, and the inlet cylinder of the carburetor is inserted into the tip of the elastic cylinder, and the air cleaner is inserted. The tip of the outlet cylinder of the carburetor is fastened to the inlet cylinder of the carburetor with a tightening band.
In JP-A-56-29262, a stud bolt implanted in a carburetor is passed through a base body of an air cleaner, and an air cleaner cap attached to a tip of the stud bolt is tightened and fixed by a nut. .

[Problems to be solved by the device]

However, according to the former of the above-mentioned prior art example, according to the former, the outlet cylinder portion of the air cleaner and the inlet cylinder portion of the carburetor interposing the elastic cylinder are fastened and connected by a tightening band, If there is no space to tighten the tightening band,
There is a problem that it is troublesome to connect these, because they cannot be connected and the tightening band is used, which complicates the structure and requires the tightening work. For example, since the stud bolt needs to be planted in the carburetor and the air cleaner cap needs to be tightened with the nut of the stud bolt, the structure is complicated and the connection is troublesome.

[Means for solving the problem]

The present invention has the following means in order to solve the above problems. That is, in the coupling device between the carburetor and the air cleaner in which a gasket is interposed between the inlet tube of the carburetor and the outlet tube of the air cleaner fitted to the outside of the carburetor, the gasket is closely attached to the outer circumference of the inlet tube. A tubular part fixed to the annular part, an annular part connected to the tubular part having an inner diameter substantially the same as the inner diameter of the hole contacting the end face of the inlet cylindrical part, and projecting on the outer peripheral surface and outer end surface of each of them. And the outlet tubular portion of the air cleaner is press-fitted to the tubular portion of the gasket, and the inner diameter of the hole of the inlet tubular portion that is projected into the annular tubular portion and projects into the outlet tubular portion. It is characterized in that the brim portion having a hole having substantially the same inner diameter as that of (1) is press-contacted with each other, and thereby each rib is elastically compressed.

[Action]

The carburetor and air cleaner are connected by simply press-fitting the outlet cylinder of the air cleaner into the tubular part of the gasket that is tightly fixed to the outer periphery of the inlet cylinder of the carburetor. Since the continuous ribs formed on the tubular portion and the annular portion of the gasket at that time are elastically compressed by the outlet tubular portion of the air cleaner and the flange portion projecting inside thereof, Due to the appropriate frictional force between the carburetor and the air cleaner, the connection between the carburetor and the air cleaner is reliably maintained, and the air from the air cleaner to the carburetor is reliably sealed and almost all of it is vaporized. Supplied to the vessel.

〔Example〕

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

Reference numeral 1 denotes a carburetor, and a gasket 3 is fixed to the inlet tube portion 2 at the outer periphery thereof by closely fitting the tubular portion 4 thereof. The gasket 3 includes a tubular portion 4, an annular portion 7 that is connected to the tubular portion 4, abuts on the end surface of the inlet tubular portion 2, and has a hole 6 having an inner diameter substantially the same as the inner diameter of the hole 5 of the inlet tubular portion 2.
This is formed by one row of continuous ribs 8b and a plurality of rows of continuous ribs 8a provided on each of the outer end surface and the outer peripheral surface of the tubular portion 4.

Then, by fitting the outlet cylinder 10 of the air cleaner 9 made of synthetic resin into the outside of the cylinder 4 of the gasket 3 by press fitting, the annular portion 7 is provided so as to project into the outlet cylinder 10 and the inlet cylinder. An annular collar portion 12 having a hole 11 having substantially the same inner diameter as the second hole 5
Are pressed against each other, and the rib 8a is elastically compressed by the outlet tube portion 10 of the air cleaner 9, whereby the air cleaner 9 is attached to the carburetor 1.
Are connected in a predetermined state.

The air cleaner 9 may be made of light alloy, 13 is a choke valve, 14 is a throttle valve, and 15 is an idle adjusting screw.

Since the present invention is configured in this way, the vaporizer 1
The air cleaner 9 is connected to the tubular portion 4 of the gasket 3 tightly fitted and fixed to the outer periphery of the inlet tubular portion 2 of the carburetor 1.
By simply press-fitting the outlet tubular portion 10 of the air cleaner 9, the outer periphery of the tubular portion 4 of the gasket 3 and the ribs 8a and 8b on the outer end surface of the annular portion 7 are respectively fitted to the outlet tubular portion 10 of the air cleaner 9, Since it is elastically compressed by the collar portion 12, it can be efficiently and reliably performed with a simple structure, and the air cleaner 9 can be detached relatively easily, and the air from the air cleaner 9 is Since it is well sealed without leaking to the outside, almost all of it is supplied to the carburetor 1.

[Effect of device]

In the present invention having the above-described structure, the carburetor and the air cleaner are connected by simply press-fitting the outlet cylinder portion of the air cleaner into the tubular portion of the gasket fixed to the outer periphery of the inlet cylinder portion of the carburetor. By doing so, each rib of the tubular portion and the annular portion is elastically compressed, so that the tightening band, the tightening work, and the stud bolt standing on the carburetor and the nut of the air cleaner cap are tightened by the nut. Compared with the above-mentioned prior art examples that require additional work, the structure is extremely simple and does not particularly require space, and it is performed efficiently, and the air from the air cleaner is used for each rib of the tubular portion and the annular portion of the gasket. Is elastically pressed against the outlet cylinder portion and the flange portion of the air cleaner to be sealed, and almost all of them are efficiently supplied to the carburetor.

[Brief description of drawings]

The drawings are cross-sectional views of an essential part showing an embodiment of the present invention. 1 ... Vaporizer, 2 ... Inlet cylinder, 3 ... Gasket, 4
...... Cylindrical portion, 5 ...... Inlet tubular portion hole, 6 ...... hole, 7 ...... annular portion, 8a, 8b ...... rib, 9 ...... air cleaner, 10 ...... outlet tubular portion, 11 ...... hole, 12 …… Mitsube.

Claims (1)

[Scope of utility model registration request] 1. A connecting device for a carburetor and an air cleaner, wherein a gasket is interposed between an inlet cylinder of a carburetor and an outlet cylinder of an air cleaner fitted to the outside thereof, wherein the gasket is the inlet cylinder. A tubular portion tightly fixed to the outer periphery of the portion, an annular portion connected to the outer peripheral surface of the inlet tubular portion having an inner diameter substantially the same as the inner diameter of the bore, and their respective outer peripheral surfaces and outer sides. The gasket is formed by a continuous rib protruding from the end face, and the outlet cylinder of the air cleaner is press-fitted into the cylindrical portion of the gasket, and the annular cylinder is protruded into the outlet cylinder and the inlet cylinder is formed. A connecting device between a carburetor and an air cleaner, characterized in that a collar portion having a hole having an inner diameter substantially the same as the inner diameter of the hole is pressed to elastically compress the ribs.