JPS6210463Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of an air cleaner device in an intake system of a motorcycle engine.

(Prior art and its problems) FIG. 1 shows a schematic side view of a scooter-type motorcycle 30 equipped with a conventional air cleaner device, in which a front fork 32 pivotally supporting a front wheel 31 is shown.
A rear frame 2 that stands upward and curves backward is joined to the rear part of the main frame 1 that curves downward from a head pipe 33 at the upper part of the frame. The rear end is pivotally connected to the front lower part of the power unit 6 which has the engine 4 and the transmission 5 assembled, and the rear upper part of the power unit 6 which drives the rear wheels 34 is connected to the rear frame 2 via the rear action 7.
It is supported at the rear of the engine, making it a so-called swing-type power unit. A floor 37 where the passenger's feet rest between the leg shield 35 and the rear cover 36
However, a seat 38 is provided above the rear cover 36. A carburetor 8 and an air cleaner device 9 are arranged adjacent to each other on the left side of the engine 4 in this order. This air cleaner device 9 has an air cleaner case 10', as shown in a schematic horizontal sectional view in FIG. The air cleaner element 1 is fitted and joined inside the air cleaner case 10'.
2 is installed, and the air cleaner element 12 divides the internal space of the air cleaner case 10' into a dirty side 10'a and a clean side 10'b.
It is divided into. Therefore, outside air is introduced into the dirty side 10'a of the air cleaner case 10' through the air intake duct 13, passes through the air cleaner element 12, and is then introduced into the clean side 10'a of the air cleaner case 10'.
0'b, and is sucked into the carburetor 8 through the outlet hole 14 of the clean side 10'b. Here, as a method of attaching the intake duct 13, the wall 1 of the air cleaner case body 10 is
A mounting hole 15 of the intake duct 13 is provided at 0a, and a protrusion 13 is provided on the outer peripheral surface of the intake duct 13 over its entire circumference.
a and 13b, respectively, and these protrusions 13
A conceivable method is to fit the mounting hole 15 into the fitting groove 13c between a and 13b. According to this mounting method, the mounting portion 13d of the intake duct 13
In this case, the joint portion 16 between the air cleaner case body 10 and the air cleaner case cover 11 is formed double, and the air cleaner device 9 becomes larger accordingly.

(Purpose of the invention) The present invention has been made in view of the above circumstances, and an object thereof is to provide a miniaturized air clearance device.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes an air cleaner case formed by joining an air cleaner case body and an air cleaner case cover, and an internal space of the air cleaner case on the dirty side. In an air cleaner device having an air cleaner element divided into a clean side and a clean side, the air cleaner case main body side wall or the air cleaner case cover side wall is cut including a part of the joint between the air cleaner case main body and the air cleaner case cover. a notch and a communication member having one end opening inside the air cleaner case and the other end opening outside the air cleaner case, and having a joint part continuous with a joint part between the air cleaner case main body and the air cleaner case cover; The member is fitted into the notch and held between the air cleaner case cover and the air cleaner case body.

(Function) The communication member is inserted into the cutting part and is held between the air cleaner case body and the air cleaner case cover, and the engaging part of the communication member is continuous with the joint part of the air cleaner case body and the air cleaner case cover, and these are double There is no structure.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 3 and 4. FIG. 3 is a horizontal sectional view of the air cleaner device of the present invention, and FIG. 4 is an exploded perspective view of the same. In FIG. 3, 20 indicates the air cleaner device of the present invention, and the air cleaner device 20 has an air cleaner case 20'. The air cleaner case 20' consists of an air cleaner case body 21 having an opening 21a arranged in the side direction of the vehicle body, and an air cleaner case cover 22 joined to the opening 21a. Bottom wall 21 of the air cleaner case body 21
The air cleaner element 23 is attached to a mounting boss 21c that protrudes from b toward the approximate center of the opening surface 21a.
Each hole 23 of the air cleaner element 24
a, 24a are respectively fitted, the air cleaner element 23 contacts the holding portion 21e of the air cleaner case main body 21, and a mounting boss 22b protrudes inside the air cleaner case cover 22.
The air cleaner element holder 24 is held by the rib 22c. The interior space of the air cleaner case 20' is divided by the air cleaner element 23 into a dirty side 20'a and a clean side 20'b. Also,
The air cleaner case main body 21 has a joining groove 21d having a bifurcated cross section to which the fitting protrusion 22a of the air cleaner case cover 22 joins to the periphery of the opening surface 21a, and a front part including a part of the joining groove 21d. A notch 21f into which the intake duct (communication member) 25 fits into the daily side 20'a of the side wall 21h.
and the clean side 20'b of the front wall 21h.
A hole 21g into which a cone tube 26 communicating between the carburetor 8 and the clean side 20'b is fitted is formed in each of the holes 21g. The cone tube 26 is buried in the air cleaner element 23 and holds the air cleaner element 23.

The intake duct 25 is formed by converging duct pipes 25a of various diameters and pipe lengths in order to attenuate intake noise in a wide range of frequencies, and protrudes from the outer periphery of the substantially intermediate portion in the axial direction. 25b', 25b', and these protruding parts 25b',
A fitting groove 25b that fits into the notch 21f and a fitting groove 25c continuous with the joining groove 21d on the periphery of the opening surface 21a of the air cleaner case body 21 are formed between the two 25b'. The intake duct 25 is fitted into the notch 21f of the air cleaner case main body 21, and the joining groove 2 of the intake duct 25 is fitted.
5c is the joint groove 21 of the air cleaner case body 21
Continuous with d.

By mounting the intake duct 25 at a substantially intermediate portion in the axial direction of the air cleaner case body 21, the air cleaner device 20 is prevented from increasing in size due to an increase in the length of the intake duct 25.

The air cleaner case cover 22 has a joining protrusion 22a on its inner surface that joins to a joining groove 21d on the periphery of the opening surface 21a of the air cleaner case main body 21;
Mounting bosses 22b that protrude inside the air cleaner case cover 22 and come into contact with the mounting bosses 21c of the air cleaner case body 21 are respectively formed. A front end 22d of the air cleaner case cover 22 extends in the longitudinal direction of the vehicle body so as to cover the intake duct 25 and the carburetor 29.

Notch 21 of the air cleaner case body 21
f into the fitting groove 25b of the intake duct 25, and fit the seal rubber 27 into the joining groove 25c of the intake duct 25 and the joining groove 21d of the air cleaner case body 21 which is continuous with the joining groove 25c, Join the joint protrusions 22a on the inner surface of the air cleaner case cover 22 to these joint grooves 21d and 25c, insert the screw 28 from the mounting boss 22b of the air cleaner case cover 22 to the mounting boss 21c of the air cleaner case body 21, and tighten. The entire air cleaner device 20 of the present invention is assembled.

Next, the effect will be explained. As described above, the joining protrusion 22a of the air cleaner case cover 22 is also used as a member that joins the air cleaner case body 21 and the air cleaner case cover 22, and a member that engages the intake duct 25 and the air cleaner case body 21. ′ becomes smaller.

In the present invention, the joint groove 21d of the air cleaner case body 21 in the above embodiment may be provided on the air cleaner case cover 22, and the joint protrusion 22a of the air cleaner case cover 22 may be provided on the air cleaner case body 21. Of course, instead of the notch 21f of 21, the depth of the air cleaner case cover 22 may be increased, a notch is provided in the side wall of the air cleaner case cover 22, and the intake duct 25, which is a communicating member, is fitted into the notch. No problem. Furthermore, in this embodiment, the intake duct 25 has been described as a communication member, but the cone tube 26 may also be used as a communication member.

(Effects of the invention) As described above, the invention includes an air cleaner case formed by joining an air cleaner case body and an air cleaner case cover, and an air cleaner element that divides the internal space of the air cleaner case into a dirty side and a clean side. In the air cleaner device, the air cleaner case has a notch formed by cutting the air cleaner case main body side wall or the air cleaner case cover side wall including a part of the joint between the air cleaner case main body and the air cleaner case cover, and one end of which is inside the air cleaner case. and a communicating member having a joint portion whose other end opens to the outside of the air cleaner case and which is continuous with a joint portion between the air cleaner case body and the air cleaner case cover,
The communication member is fitted into the notch and is held between the air cleaner case cover and the air cleaner case body, so that the connection between the air cleaner case body and the air cleaner case cover, the communication member and the air cleaner case body or the air cleaner Since the case cover and the mounting fitting part have a dual-purpose structure, they are not duplicated, and therefore, the external dimensions of the air cleaner case can be reduced, so that the air cleaner device can be made smaller. Ru. Furthermore, the communication member can be easily attached and detached.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a scooter type motorcycle equipped with a conventional air cleaner device, Fig. 2 is a schematic horizontal sectional view of the conventional air cleaner device, and Fig. 3 is a schematic side view of a scooter type motorcycle equipped with a conventional air cleaner device.
3 and 4 show an embodiment of the air cleaner device of the present invention, FIG. 3 is a horizontal sectional view, and FIG. 4 is an exploded perspective view. 20...Air cleaner device, 20'...Air cleaner case, 20'a...Dirty side, 2
0'b...Clean side, 21...Air cleaner case body, 21d...Joining groove, 21f...Notch, 22...Air cleaner case cover, 22
a...Joint protrusion, 23...Air cleaner element, 25...Intake duct (communication member), 25b...
...Fitting groove, 25c...Joining groove.

Claims (1)

[Scope of utility model registration request] In an air cleaner device having an air cleaner case formed by joining an air cleaner case body and an air cleaner case cover, and an air cleaner element that divides an internal space of the air cleaner case into a dirty side and a clean side, the air cleaner case body side wall or A notch formed by cutting the air cleaner case cover side wall including a part of the joint between the air cleaner case body and the air cleaner case cover, and one end opening inside the air cleaner case and the other end opening outside the air cleaner case. and a communication member having a joint portion that connects the joint portion between the air cleaner case body and the air cleaner case cover, the communication member being fitted into the notch and being held between the air cleaner case cover and the air cleaner case body. An air cleaner device for a motorcycle, which is characterized by: