JP2769329B2 - Vehicle air cleaner mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an air cleaner mounting apparatus for a vehicle in which an air cleaner disposed between a pair of left and right tank rails is held by both tank rails and an intake pipe. It is about.

(Background of the Invention) In a vehicle such as a motorcycle, an air cleaner is disposed between a pair of left and right tank rails extending obliquely rearward from a steering head pipe, and via a down-draft type carburetor located below the air cleaner. It is known to introduce intake air to an engine. In this case, conventionally,
This air cleaner is held by a carburetor via a rubber connector, and is attached to a bracket provided on the vehicle body frame side by bolting.

This not only increases the man-hour for installing the air cleaner, but also causes excessive force to be applied to the mounting part if there is a relative misalignment between the mounting position on the bracket side and the mounting position on the carburetor side. Therefore, the durability of these mounting portions becomes a problem. Also, bracket mounting space is required, which limits the mounting space for other parts.
There were also inconveniences such as.

(Object of the Invention) The present invention has been made in view of such circumstances,
Provided is an air cleaner mounting device for a vehicle, in which the number of steps for mounting the air cleaner is reduced, the durability thereof can be improved without applying excessive force to the mounting portion, and the space required for mounting can be reduced. With the goal.

(Constitution of the Invention) According to the present invention, an object is to provide a pair of left and right vertically wide tank rails extending from the steering head pipe in the vehicle width direction to extend obliquely rearward and rearward, and between these tank rails. In a vehicle having an air cleaner disposed therein, a pair of left and right grommets having long holes elongated in the longitudinal direction of these tank rails are attached to opposing surfaces of the two tank rails, the gaps of which extend rearward. A pair of left and right projections are provided at the front part of the lower case as upper and lower parts, which protrude in the width direction of the vehicle body and are engaged and held in these elongated holes from the rear to the front, and the front part of the lower case of the air cleaner is formed by these. Achieved by a vehicle air cleaner mounting device characterized in that it is held in a long hole and the rear lower surface of the lower case is held in an intake pipe leading to the engine. Is done.

Here, the intake pipe leading to the engine is a carburetor when a carburetor is used, and is an intake pipe connected to an intake valve of the engine to guide air to a combustion chamber when a fuel injection device is used. .

(Embodiment) FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a plan view showing a part of a mounting portion of an air cleaner, FIG. 3 is a side sectional view of the air cleaner, and FIG. Bottom view, Fig. 5 is an enlarged side view of a part of the tank rail, Fig. 6 is its VI-VI
It is a line sectional view.

In these figures, reference numeral 10 denotes a light alloy body frame, which includes a steering head pipe 12, a pair of left and right tank rails 14, 14 extending diagonally downward and rearward, and an appropriate combination of the two tank rails 14, 14. A cross member (not shown). As shown in FIG. 6, the tank rail 14 has a rectangular cross section which is wide in the vertical direction, and its rear portion is bent downward. Here, it is a matter of course that the distance between the tank rails 14 and 14 in the vehicle width direction gradually increases from the steering head pipe 12 toward the rear. The steering head pipe 12 has two front forks 16
(Only one is shown) is rotatably held to the left and right.
A front steering wheel 18 is attached to a lower end of the front fork 16, and a handlebar (not shown) is fixed to an upper end.

A rear arm 20 has a front end connected to a rear portion of the vehicle body frame 10 by a pivot shaft, and a rear wheel 22 held at the rear end. The rear arm 20 is supported by a cushion unit 28 via links 24 and 26.

30 is a liquid-cooled in-line four-cylinder engine, tank rail
It is mounted below 14. The crankshaft of the engine 30 is disposed in the width direction of the vehicle body, the rear portion of the crankcase 32 is fixed to the vehicle body frame 10 by bolts 34 and 36, and the left and right side surfaces of the cylinder 38 are fixed to the tank rail 14.
It is fixed to a character-shaped bracket 40. Reference numeral 42 denotes a radiator located obliquely forward of the cylinder 38, in which the coolant of the engine 30 is circulated and cooled. The radiator 42 is provided with an electric fan.

44 is an air cleaner. The air cleaner 44 is located above the cylinder 38 between the left and right tank rails 14, 14.
The case of the air cleaner 44 is split vertically, and includes a lower case 46 whose rear half bulges downward, and an upper case 48 that is overlaid on the lower case 46, and a filter 50 is provided between the mating surfaces of the two cases 46 and 48.
Is held. A cap 52 is attached to the lower surface of the front part of the lower case 46, and outside air flows from the cap 52 into the upper case 48 through a passage 54 formed integrally with the front part of the lower case 46, and further passes through the filter 50. It flows into the lower case 46. Four rubber connectors 56 are attached to the lower surface of the bulging portion provided at the rear of the lower case 46, and the lower ends of these connectors 56 are independently connected to four carburetors 58 (FIG. 1). You.

On the lower surface of the front part of the lower case 46 of the air cleaner 44, a pair of left and right pedestals 60, 60 protruding downward is projected, and these pedestals are formed with angular projections 62, 62 horizontally protruding left and right. I have. In addition, tank rails 14 are provided on opposing surfaces (opposing surfaces) of which intervals are widened toward the rear of the tank rails 14, 14.
A long opening is formed in the longitudinal direction, and a rubber grommet 64 is mounted here. This grommet 64
A long hole 66 is formed in the tank rail 14 corresponding to a long opening formed along the longitudinal direction. The protrusion
The grommet 64 is engaged with the elongated hole 66 of the grommet 64 from behind, and is held in the elongated hole 66 by moving the air cleaner 44 forward. In this state, the rear part of the air cleaner 44 can swing up and down around the left and right protrusions 64,
Thereafter, the rear lower surface of the lower case 46 is connected to the vaporizer 58 via the connector 56. As a result, the front part of the air cleaner 44 is held by the long hole 66, and the rear part of the air cleaner 44 is held by the carburetor 58.

In FIG. 3, 68 is a drain tube and 70 is this tube 68
These filters are interposed in the middle of
Water accumulated in the air cleaner 44 is discharged through the filter 70 and the filter 70. In FIG. 1, reference numeral 72 denotes a fuel tank that covers the upper portion of the air cleaner 44, and reference numeral 74 denotes an operation seat.

Therefore, when the air cleaner 44 is mounted, the projections 62 of the air cleaner 44 are engaged with the long holes 66 of the grommet 64 from behind, and the projections 62 are moved back and forth in the long holes 66 while the connector 56 is moved.
May be connected to the vaporizer 58 while being positioned. Here, in this embodiment, the grommet 64 is mounted on the surface (opposed surface) where the tank rail 14 extends rearward and leftward in plan view, so that if the air cleaner 44 is mounted from the rear, the projection 62 can easily be elongated. 66 is available.

In this embodiment, the tank rail 14 has a closed cross-sectional shape (FIG. 6), but the present invention is not limited to this, and any tank rail that is wide in the vertical direction can be applied.

In the case where fuel is supplied by a fuel injection valve instead of the carburetor 58, the air cleaner can be held by an intake pipe leading to an intake valve of the engine, and the present invention includes such a thing.

(Effect of the Invention) As described above, a pair of grommets having a long hole elongated in the longitudinal direction of the tank rail are attached to the opposing surfaces of the pair of left and right tank rails which are widened up and down and are gradually spaced rearward as described above. A pair of projections in the vehicle width direction provided at the front part of the lower case with the air cleaner divided vertically are engaged with these long holes from behind, and the air cleaner is moved forward to hold both projections in the long holes. At the same time, since the rear lower surface of the lower case is connected to and held by the intake pipe leading to the engine, the air cleaner can be easily mounted, and the number of steps for mounting the air cleaner is reduced. Further, since the projection is held by the grommet, no excessive force is applied to the mounting portion of the air cleaner, and the durability can be improved. Further, since no special bracket is required, the space required for mounting the air cleaner can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a plan view partially showing a mounting portion of an air cleaner, FIG. 3 is a side sectional view of the air cleaner, FIG. FIG. 5 is an enlarged side view of a part of the tank rail, and FIG. 6 is a sectional view taken along line VI-VI. 14 ... tank rail, 30 ... engine, 44 ... air cleaner, 46 ... lower case, 58 ... carburetor as intake pipe, 62 ... projection, 64 ... grommet, 66 ... long hole.

Claims (1)

(57) [Claims] 1. A vehicle having a pair of left and right wide tank rails extending from the steering head pipe in the vehicle width direction to extend obliquely downward and rearward, and an air cleaner disposed between the tank rails. In the above, a pair of left and right grommets having long holes in the longitudinal direction of these tank rails are attached to the opposing surfaces where the distance between the two tank rails increases toward the rear, and the air cleaner is split vertically so that the front part of the lower case is A pair of left and right projections projecting in the width direction of the vehicle body to be engaged and held from rear to front in the elongated holes, and to hold the front portion of the lower case of the air cleaner in the elongated holes, and An air cleaner mounting device for a vehicle, wherein a rear lower surface is held by an intake pipe leading to an engine.