JP2761250B2 - Motorcycle air cleaner device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air cleaner device for a motorcycle.

(Conventional technology) In order to make it difficult for foreign matter in the outside air to adhere to the air cleaner element, the air cleaner case is divided into two upper and lower chambers by plate-like elements, the upper chamber on the cover side is a clean side room, and the lower chamber communicating with the outside air. An air cleaner device having a dirty side room is known.

In such a conventional air cleaner device, the other end of the connecting tube that connects one end to the carburetor is connected to the cover.

(Problems to be Solved by the Invention) In the above-described conventional air cleaner device, the connecting tube connecting the carburetor and the clean side room occupies a large space, and there has been a demand for space saving. In addition, when performing maintenance, it is necessary to remove the cover after removing the connecting tube from the cover, and there has been a problem that the workability of maintenance is complicated.

Therefore, an object of the present invention is to provide an air cleaner device for a motorcycle that can achieve space saving of a connecting tube and can facilitate maintenance workability.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an air cleaner case comprising an upper half and a lower half, wherein the upper half is formed in a substantially inverted concave shape having a longitudinal direction. An air cleaner element that partitions the inside of the air cleaner case into an upper chamber and a lower chamber, wherein the lower chamber is a dirty side room for taking in outside air by partitioning by the air cleaner element, the upper chamber is a clean side room, and the clean side is A connecting tube for connecting the room and the carburetor is provided so as to penetrate the air cleaner element and the lower half, and an inlet opening to the clean side of the connecting tube is formed in a substantially inverted concave shape of the upper half. Direction, and the opening direction of the inlet of the connecting tube is changed to the upper half. It is characterized by being oriented in the longitudinal direction of the substantially inverted concave shape of the body.

(Operation) The connecting tube for connecting the carburetor and the clean side room is passed through the air cleaner element and the lower half of the dirty side room from the clean side room, and thus the connecting tube is disposed through the dirty side room. In addition, since the connecting tube is not attached to the upper half of the cover side, workability during maintenance can be facilitated.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a left side view of the motorcycle, and FIG. 2 is a rear view thereof.

As shown, the motorcycle 1 includes a front wheel 11, a front suspension 12, a steering handle 13, a handle cover.
14, knuckle guard 15, fuel tank 16, seat 17, left and right footrest 18, rear fork 19, chain case 2
7, a rear fender 20, a rear wheel 21, etc., and a front cowl 23, a side cowl 24 and a rear cowl 25.
A cowl 22 consisting of The cowl 22 surrounds the side periphery of the vehicle body frame (see FIGS. 3 and 4), and a storage box 23b for storing goods is formed in the front cowl portion 23.

FIG. 3 is a left side view of a main part of the motorcycle with the cowl removed, FIG. 4 is a plan view of the main part, and FIG. 5 is a longitudinal sectional view in the vehicle width direction.

A rear fork is provided at the rear of the frame 3 as shown in FIG.
19 is rear fork pivot 41 and rear suspension 45
Is pivotally supported via the. The lower ends of the left and right front down frames 36 are connected to the power unit 5 suspended from the main frame 35, thereby making the power unit 5 a strength member. Above the front of this power unit 5 is a fuel tank on the main frame 35
The fuel tank 16 is supported, and an oil tank 43 is disposed behind the fuel tank 16. The oil tank 43 is formed in an L-shape in plan view as shown in FIG. 4, and is disposed so as to extend from the rear of the fuel tank 16 to the rear right side surface. A battery 44 is disposed behind the oil tank 43.

As shown in FIGS. 4 and 5, the intake system of the power unit 5 includes an air cleaner device 9 and a carburetor 91 connected to the air cleaner device 9 disposed on the left side of the vehicle width center line. The exhaust system of the power unit 5 is arranged on the right side of the vehicle width center line, and a muffler 7 is arranged to face the air cleaner 9.
Through the power unit 5.

In the figure, 31 is a head tube, 38l and 38r are left and right seat frames, 39l and 39r are left and right rear down frames, 76
Is a spark arrestor.

6 is a vertical side view of the air cleaner device, FIG. 7 is an exploded perspective view of the same, FIG. 8 is a plan view of a lower case, FIG. 9 is a side view thereof, FIG. 10 is a front view thereof, and FIG. 12 is a longitudinal sectional view of the cover member, FIG. 13 is a front view of the same, FIG. 14 is a plan view of a connecting tube, and FIG. 15 is a side view of the same.

As shown in FIG. 6, the air cleaner device 9 includes a substantially box-shaped air cleaner case 90, and an air cleaner element 95 provided in the air cleaner case 90. Clean air purified by the element 95 is connected to a connecting tube 92. The carburetor 91 is supplied to the carburetor 91 (see FIG. 3).

The air cleaner case 90 is, as shown in FIG.
A lower case 94 as a lower half, and an opening 94a of the lower case 94
And a cover member 93 which is an upper half body for covering. A step 94b is formed in the opening 94a of the lower case 94 below the upper edge by a predetermined length as shown in FIGS. 7 and 8, a suction duct mounting hole 94e for connecting a suction duct 97 for introducing outside air is formed on the left side surface of the lower case 94. A connecting tube mounting hole 94d for mounting the connecting tube 92 is formed in the front surface of the lower case 94.

As shown in FIGS. 8 and 9, a cover member 93 is locked on the upper surface of the lower case 94 by a spring member 94i.

The cover member 93, as shown in FIGS. 11 to 13,
A concave portion for inserting the upper edge of the lower case 94 at the lower edge formed in a substantially concave shape
Has 93a. Specifically, the cover member 93 is shown in FIG.
As clearly shown in Fig. 2, it has a generally inverted concave shape that is long in the left-right direction (the front-rear direction in the mounted state) of the figure, and the middle ceiling excluding the ends in the longitudinal and width directions is one step higher from the surrounding Is formed. A resin plate 93c that presses and holds the air cleaner element 95 is welded and fixed to the opening end side of the cover member 93. A spring engaging part 93b is provided on the upper surface of the step part.
Having.

In FIG. 7, reference numeral 95 denotes a sponge plate-shaped air cleaner element, in which an insertion hole 95a for a connecting tube 92 is formed. Reference numeral 96 denotes a substantially lattice-shaped element base for mounting and supporting the element 95, and a hole 96a corresponding to the hole 95a of the element 95 is also formed in the element base 96. In the drawing, 94i is a spring member which presses and engages with the cover member 93, 94g is a set nut of the air cleaner case, 94h is the mounting bolt, and 92f is a carburetor 91 of the connecting tube 92.
Tightening band to be attached to 97, 97 is the mounting hole 94e of the lower case 94
A suction duct 94f is provided to take in outside air, and 94f is a mounting bracket.

Connecting tube as shown in FIGS. 14 and 15
Reference numeral 92 denotes a cylindrical shape extending from the inlet 92a to the outlet 92e, and the outlet
A mounting portion 92d that sandwiches the mounting hole 94d on the front surface of the lower case 94 is provided near the base 92e.

In the above, as shown in FIG.
An element base 96 is placed and supported on b, and an element 95 is placed on this element base 96, and a cover member
The element 93 is pressed and engaged with the spring member 94i, and the element 95 is pressed and held by the resin plate 93c of the cover member 93. In this way, the element 95 forms the clean side room C at the upper part in the air cleaner case 90 and the dirty side room D at the lower part.

The inlet 92a of the connecting tube 92 is inserted through the hole 96a of the element base 96 and the hole 95a of the element 95, and is disposed facing the clean side room C. The inlet 92a of the connecting tube 92 facing the clean side room C is opened so as to face the longitudinal direction of the cover member 93 constituting the upper half body as clearly shown in FIG. The outlet 92e of the connecting tube 92 passes through the dirty side room D and protrudes outward from the contube through hole 94d of the lower case 94.

According to the above embodiment, the inlet 92a of the connecting tube 92 faces the clean side room C formed above the element 95 in the air cleaner case 90, and the outlet 92e connects the element 95 and the lower case 94.
Is provided so as to protrude outside the case, so that the space occupied by the connecting tube 92 outside the air cleaner case 90 can be small, and space saving can be achieved.

The connecting tube 92 is an air cleaner case.
Since the cover member 93 is not attached to the cover member 90, the cover member 93 can be easily attached and detached at the time of maintenance, and workability can be facilitated.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the air cleaner case is composed of an upper half and a lower half, and the upper half is formed in a substantially inverted concave shape having a longitudinal direction. An air cleaner element that partitions the inside of the air cleaner case into an upper chamber and a lower chamber is provided, and the lower chamber is a dirty side room for taking in outside air by partitioning by the air cleaner element,
The upper chamber is a clean side room, and a connecting tube connecting the clean side room and the carburetor is provided so as to penetrate the air cleaner element, and the lower half, and an inlet opening to the clean side of the connecting tube is provided. Since the upper half is directed to one end of the substantially inverted concave shape in the longitudinal direction, and the opening direction of the inlet of the connecting tube is directed to the longitudinal direction of the substantially inverted concave shape of the upper half, the connecting is performed. The space saving of the tube can be achieved, the workability of the maintenance can be facilitated, and the inlet opening on the clean side of the connecting tube can be directed to the longitudinal direction of the substantially inverted concave shape of the upper half. .

[Brief description of the drawings]

1 is a left side view of the motorcycle, FIG. 2 is a rear view of the same, FIG. 3 is a left side view of a main part of the motorcycle in a state where a cowl is removed,
FIG. 4 is a plan view of the essential parts, FIG. 5 is a vertical sectional view in the vehicle width direction, FIG. 6 is a vertical side view of the air cleaner device, FIG. 7 is an exploded perspective view thereof, and FIG. Fig. 9, Fig. 9 is a side view, Fig. 10 is a front view, Fig. 11 is a plan view of a cover member, Fig. 12 is a longitudinal sectional view, Fig. 13 is a front view, and Fig. 14 is connecting. FIG. 15 is a plan view of the tube, and FIG. In the figure, 90 is an air cleaner case, 91 is a carburetor,
92 is a connecting tube, 93 is an upper half, 94 is a lower half, 95 is an air cleaner element, C is a clean side room, and D is a dirty side room.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 57-54666 (JP, U) Japanese Utility Model Sho 56-159660 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F02M 35/024 511 F02M 35/10 101 F02M 35/16

Claims (1)

(57) [Claims] 1. An air cleaner case comprising an upper half and a lower half, wherein the upper half is formed in a substantially inverted concave shape having a longitudinal direction, and partitions the inside of the air cleaner case into an upper chamber and a lower chamber. An air cleaner element is provided, the lower chamber is a dirty side room for taking in outside air by partitioning by the air cleaner element, the upper chamber is a clean side room, and a connecting tube connecting the clean side room and the carburetor is the air cleaner element. And, provided so as to penetrate the lower half, the inlet opening to the clean side of the connecting tube faces one end of the upper half in the substantially inverted concave longitudinal direction, and the inlet of the connecting tube The opening direction of the portion is oriented in the longitudinal direction of the substantially inverted concave shape of the upper half, Motorcycle air cleaner device.