JPH0227173Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a filter mounting device for an air cleaner used in a motorcycle engine or the like.

Generally, to install a filter in an air cleaner case, the filter is inserted through an insertion hole provided in the case, attached to a holder, etc., and a cap is secured to the insertion hole with screws at multiple locations. Therefore, cleaning and replacing the cleaner requires the work of attaching and detaching several screws, and the number of parts and parts to be machined is large.

The purpose of this invention is to provide an air cleaner filter mounting device that simplifies the structure described above and allows the filter to be attached and detached by operating a single screw, making cleaning and replacement easier. .

A detailed explanation will be given below with reference to figures showing embodiments of this invention. The figure shows automatic 2 equipped with a multi-cylinder engine.
An example of an air cleaner for a wheeled vehicle is shown.

The engine 1 is a horizontal multi-cylinder engine mounted in the center of the vehicle body surrounded by a down tube 2, an undertube 3, and a tank rail 4. The rear end of the tank rail 4 extends downward to form a body tube 5 communicating with the rear of the undertube 3, and the front end of a seat rail 6 extending rearward is connected to the tank rail 4. An intake passage 7 is led out rearward from the rear edge of each cylinder of the engine 1 and connected to a carburetor 8. 9 is an exhaust pipe. Above tank rail 4
Two of them are arranged oppositely on the left and right, and span the fuel tank 10. A recessed chamber 11 is formed at the bottom of the rear end portion 10a of this fuel tank 10.

Next, when viewed from the front, the air cleaner case 12 has a thin upper half 12a and a lower half 12 that bulges out on both sides.
It is formed into a convex shape by b. Upper half 12a
A filter 13 is housed inside, and a filter insertion hole 17 is opened at the rear surface. The lower half 12b functions as an air chamber due to its volume, and a plurality of cylindrical outlet members 15 are installed side by side on the front surface, and the inside of the outlet members 15 forms an outlet 5A. This air cleaner case 12 is attached to the tank rail 4 so that the upper half 12a fits into the recessed chamber 11 between the inner widths of the tank rail 4. The lower half portion 12b is located such that the upper surfaces of both lateral enlarged portions are along the lower edge of the rear end portion of the tank rail 4, and each outlet 5 on the front surface thereof is connected to each carburetor 8. The size of the recessed chamber 11 is set to such a size that a gap 16 remains around the upper half 12a when the upper half 12a is fitted.

With the above configuration, air sucked from the recessed chamber 11 at the bottom of the fuel tank 10 passes through the filter 13, expands in the lower half 12b, reduces the flow velocity, and is then distributed to each carburetor 8, and then distributed to each cylinder. A series of air intake systems are completed.

In the above intake system, the filter 13 is attached and detached as follows.

First, a filter insertion hole 17 is provided on the rear surface of the upper half portion 2a of the air cleaner case, and a cap 18 is placed over the hole from the outside.

A funnel-shaped inlet member 14 is installed in this cap 18, and this inlet member 14
An inlet 14A is formed by the internal space of the inlet 14A. Further, one end surface of a cylindrical filter 13 surrounding this inlet member 14 is fixed with adhesive to the back surface of the cap 18, and a holder 19 is similarly fixed with adhesive to the other end surface of the filter 13 so as to be integrated. has been done. Further, a screw 20 is welded and protrudes outward from the outer surface of the holder 19.

Upper half 12 facing the other filter insertion hole 17
A rib-shaped protrusion 21 is formed inwardly on the front surface of a, and a small through hole 22 is formed on the top surface of the protrusion 21.

Insert the integrated filter 3 into the filter insertion hole 17 from the holder 19 side, make the screw 20 protrude outward from the small through hole 22, cover the outer surface of the filter installation hole 17 with the cap 18, and then insert the screw 20 into the filter insertion hole 17.
By tightening the nut 23 from the outside of the air cleaner case 12, the cap 18 is fixed in close contact with the fuel tank insertion hole 17.

Note that the inlet 14A is the inlet member 14.
The cap 18 is not limited to the one formed by
An opening may be formed in the opening, and the inside of this opening may be made into an inflator.

As described above, the air cleaner filter mounting device according to the present invention has an inlet provided in the cap that is attached to the filter insertion hole, and the filter is integrally mounted on the back surface with a holder.
The screw at the bottom of the holder protrudes from the case and is tightened with a nut, allowing the filter to be easily attached and detached with one nut. Cleaning and straightening the filter becomes extremely easy. In addition, the case wall that tightens the nut faces the inlet and tends to swing due to suction pulsations, but the provision of rib-like protrusions and the combination with the filter suppress free vibration, reducing noise. It has the effect of preventing the occurrence.

[Brief explanation of the drawing]

FIG. 1 is a side view of essential parts of a two-wheeled motor vehicle showing an embodiment of this invention, FIG. 2 is an enlarged vertical sectional side view of an air cleaner case, and FIG. 3 is a rear view of the same. 1...engine, 4...tank rail, 7...
Intake passage, 8...Carburetor, 10...Fuel tank, 11...Concave chamber, 12...Air cleaner case, 12a...Upper half, 12b...Lower half, 13
... Filter, 14 ... Inlet member, 14A
... Inlet, 15 ... Outlet member, 1
5A...Outlet, 17...Filter insertion hole, 18...Cap, 19...Holder, 20...
...screw, 22...small through hole, 23...nut.

Claims (1)

[Scope of utility model registration request] A filter insertion hole and a small through hole are provided in opposite case walls of the air cleaner case, and a cap for closing the filter insertion hole is provided with an inlet in the center, and a screw is provided protruding from the outer surface. A holder is integrally connected to both end faces of a cylindrical filter, and by inserting this integrated filter into the filter insertion hole from the holder side, the screw can be inserted from the small through hole to the outside surface. Make it stand out, and
A filter mounting device for an air cleaner, characterized in that the cap is brought into pressure contact with the outer surface of the filter insertion hole by placing the cap over the outer surface of the filter insertion hole and further tightening a nut on the screw.