JPS6219504Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air cleaner device for a motorcycle.

In motorcycles, a type that employs a power unit swing type and is capable of both bicycle driving and engine-powered driving, for example, uses large diameter wheels similar to those of bicycles.
Looking at this from the perspective of the driving wheels, that is, the rear wheels, the length of the car body is limited, the rear wheels are supported at the rear of the power unit, and the carburetor is placed on the front of the power unit, which connects the car body and the rear wheels. Since the rear fender is interposed between them, and the wheels have a large diameter, it is difficult to obtain space between the rear wheel, the carburetor, and the rear fender, which poses a problem in installing the air cleaner. Even if installed temporarily, it is difficult to obtain sufficient volume, and if the intake port is placed close to the center line of the vehicle body, the case will bulge out to the outside of the power unit in order to gain volume, and the purification side and carburetor will be separated. The connecting tube also has to bulge outward in order to increase the passage length, and it bulges out to the outside of the frame and power unit, which is undesirable in terms of appearance, complicates the structure, and requires space to the outside.

The inventors of the present invention have devised this invention to solve the above-mentioned problems.The purpose of this invention is to provide a cover on the side of the air cleaner case body, which is formed from a part of the rear fender with a bottom wall, etc. A partition plate is provided between the cover and the main body to partition the inside, the peripheral part of one side of the element is supported in the opening provided in the partition plate, and a connecting pipe connecting the purification side and the carburetor is provided inside the main body. An air cleaner with a sufficient volume can be provided in a limited space by supporting one end of the air cleaner in the mounting hole of the partition plate while being installed inside the air cleaner.
In addition, purified air is supplied to the carburetor through a pipe conduit built into the main body while ensuring a sufficient passage length, and the carburetor is supplied directly to the carburetor connecting pipe support provided at the outlet of the pipe within the main body. By fitting and connecting, it prevents exposure to the outside and improves the appearance. The above pipes and elements are supported by one partition plate, rationalizing the mounting support, simplifying the mounting support structure, and reducing parts. An object of the present invention is to provide an air cleaner device for a motorcycle, which is designed to reduce air pollution and improve maintainability.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side view of a motorcycle 1, in which the upper part of a front fork 5 that supports a front wheel 6 is pivotably mounted to a head tube 3 at the front end of a frame 2 via upper and lower bridges 4, 4, so as to be freely steerable. A handle 7 is provided on the bridge, a fuel tank 8 is provided on the front of the frame, and a body 9 with a seat 10 attached to the top is provided behind this. A power unit 13 consisting of an engine 11, a case 12 such as a crank case, and a transmission case is pivotally mounted at the front part of the frame at the middle lower part thereof, and the rear wheel 13 is pivoted at the rear part of this unit.
A cantilever type rear action unit 15 is interposed between the rear part and the rear part of the frame.

A rear fender 16 is provided at the rear of the body 9, and the fender 16 is composed of a plurality of parts such as a rear part, a middle part, and a front part. A carburetor 17 is provided on the unit 13 behind the engine and between the front end of the rear wheel 14.

The air cleaner 18 is provided between the front end of the rear wheel 14 and the carburetor 17, as shown in detail in FIGS. 2 to 5. As shown in FIG. 1, the air cleaner 18 has a substantially triangular side surface. The case 19, which forms the main body of the air cleaner, has a bottom wall 19a that extends along the cross section of the tire 14a of the wheel 14 and is curved in the outer diameter direction, and an inner wall 19b that is spaced from the side surface of the tire. It is formed into a box shape with space in the front and upper part, and the bottom and inside are provided at the center in the width direction of the body 9 so as to form part of the rear fender. The case 19 protrudes toward the side having the unit 13 so as to enlarge its volume and outer shape, and is provided with an extending portion 19d and a plurality of boss portions 19e around the opening 19c. And on the front upper wall inside the case there is a suction pipe 2 for taking in outside air.
0 to communicate the inside and outside air, and the suction pipe 20
The suction section 20a is a combination of the left and right divided pieces 9a and 9b, and faces the inside of the body 9 which is opened downward and rearward 9c to prevent dust, water, etc. from entering.

The open end 19c of the main body 19 is closed by attaching a cover 21 having a dish shape and a volume, and around the open end 21a of the cover 21 is a groove 21b into which the extension 19d of the open end of the main body is inserted and engaged, and a boss. A boss portion 21c is provided which is joined to the portion 19e and fixed with a screw 22. When joining the cover 21 to the main body 19, a partition plate 23 is interposed between the parts to separate the space S in the main body 19 and the cover 2.
A space _S1 within 1 is partitioned. The partition plate 23 has a packing part 23a made of rubber or the like around the periphery, which is attached to the main body 19.
The step part 19f provided around the open end of the cover 21 and the open end abutting part 21d of the cover 21 are pressed together to form a seal.

In the middle or lower part of the partition plate 23, there is an opening 24 having a peripheral branch piece 24a bent toward the cover 21 side.
form. The periphery of the side surface of the element 25 fixed to the rod-shaped support portion 21e protruding from the inner surface of the cover 21 is brought into contact with the branch piece 24a to close the opening 24 with the element 25. The element 25 is surrounded by a holder 25
The element 25 is held between the supporting piece 24a of the opening so as to be surrounded by the element 25, and the element 25 is fixed to the support part 21e with a screw 26 at the cross part 25b of the middle part of the holder. The holder comes off together, and the opening 24 of the partition plate 23
4a, and elements can be exchanged.

A mounting hole 27 is provided in the upper part of the partition plate 23, into which a groove 28a provided on the outer periphery of the tip of a connecting pipe 28, that is, a contube 28 made of rubber or the like is fitted, and a flange portion provided at the rear end of the groove 28a is fitted. 28b is pressed against the periphery of the mounting hole 27, and one end of the contube 28 is supported by the partition plate 23 in common with the element 25. The distal end opening 28c of the contube 28 faces the chamber _S1 on the cover side, and the opening 28c is partitioned from the chamber S on the main body side by the partition plate 23. The contube 28 is installed laterally within the main body 19 in the axle direction, and is
The upper wall 19g of the main body 19 is curved into a shape and extends upward.
A groove 28e provided around the distal end 28d is fitted and locked around the mounting hole 19h provided in the mounting hole 19h, and an opening 28f is formed to the outside.
The intake port 17 of the carburetor 17 is connected to this opening 28f.
Fit and connect a. The main body 19 has a stay 29 connected to a boss 19i provided on a side wall 19b with a bolt 30, and the stay 29 is fixed to the power unit 13, and swings together with the power unit 13, forming a fender inside the case. To prevent mud etc. in front of the rear wheels 14.

In the above, the main body 19 is arranged at the center of the body while also serving as a part of the rear fender, a cover is provided on one side of the main body, the interior is partitioned by a partition plate, and the element and the connecting pipe end are supported by this. , the air cleaner can secure a sufficient volume without protruding outward. Outside air is taken into the chamber S of the main body 19 from the suction pipe 20, and the air is blocked by the partition plate 23 and passes through the opening 2.
4 through the element 25 of the cover 2.
It flows into the chamber _S1 on the first side. Then, it is introduced into the interior from the inlet 28c of the contube 28 that opens there, and is sucked into the carburetor 17 from the outlet 28f through the conduit. Contube 2 like this
8 is housed inside the main body 19 to increase the pipe length and not be exposed to the outside, improving the appearance.

By the way, the partition plate 23 has an opening with an element 25.
and supports one end of the contube 28. Therefore, there is no need to separately provide each supporting member inside the air cleaner, and each mounting support structure can be easily and rationally constructed using a minimum number of parts. When replacing the element, the cover can be removed without requiring any operation on the diaphragm side, making it easy to replace. Also, replacing the contube can be easily done by removing the diaphragm, making it easy to assemble and maintain after use. The sex is also extremely good.

As is clear from the above, according to the present invention, an air cleaner can be provided in an extremely limited small space while securing a volume, and the connecting pipe can be installed internally to ensure sufficient pipe length. In addition to being supported at two locations inside the air cleaner to make it immovable, the air outlet of the connecting pipe is reinforced with the air cleaner body to increase rigidity and form a carburetor connecting pipe support part, so the carburetor can be directly fitted and connected to the connecting pipe support part. can do. Therefore, there is no longer a need for the connecting pipe that was conventionally installed outside the air cleaner to connect the air cleaner body and the carburetor, and there is also no need for joint bands, etc. that used to tighten the carburetor and the connecting pipe, reducing the number of parts and simplifying assembly. It is possible to facilitate installation, improve appearance, and reduce installation space. In particular, the interior of the air cleaner is divided by partition plates, and the element and connecting pipe are supported by a common partition plate, so that both can be installed commonly, and can be easily installed and supported with a minimum number of parts, and the cover can be removed. It has many advantages such as being able to replace elements and alternate connecting pipes, and is easy to assemble and maintain.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a side view of a motorcycle, Fig. 2 is a cutaway front view of the air cleaner device, Fig. 3 is an enlarged view of the same, and Fig. 4 shows a connecting pipe. FIG. 5 is a sectional view taken along the line 5-5 in FIG. 2. In the drawings, 1 is a motorcycle, 16 is a rear fender, 18 is an air cleaner, 19 is a main body, 21 is a cover, 23 is a partition plate, 25 is an element, and 28 is a connecting pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] An air cleaner body having a space formed in the width direction of the vehicle body, an air intake port provided in the space, and one outer side extending in the longitudinal direction of the vehicle body; a cover that is removably attached to the side surface of the main body including the extension part and has a space inside; and a cover that partitions and divides the space between the cover and the air cleaner main body, and an air inlet side on the extension part side of the air cleaner main body. a partition wall that forms an opening and an air outlet side opening on the space side of the air cleaner body in the vehicle body width direction; an air cleaner element supported by pressure, one end of which is attached to an air outlet side opening of the partition wall, the other end of which is attached to an air outlet opening formed in a space in the width direction of the vehicle body of the air cleaner main body; A carburetor that is formed by a connecting pipe to the carburetor disposed in a space in the width direction, a connecting portion of the connecting pipe at the air take-out opening, and the air take-out opening, and is directly fitted and connected to the carburetor. An air cleaner device for a motorcycle, comprising a connecting pipe support part.