JPS6365554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protective cover for an air cleaner duct in a motorcycle or the like.

Conventionally, in motorcycles, tricycles, etc., the inlet end of the air cleaner duct, that is, the intake duct that introduces outside air into the air cleaner body, is placed on the rear side of a head tube, etc., to prevent wind, water, mud, etc. from entering the air cleaner duct during driving. We are trying to prevent intrusion.

However, when considering the prevention of wind, water, mud, etc. from entering the air cleaner duct, it is difficult to say that simply arranging the inlet end of the air cleaner duct on the rear side of the head tube is sufficient.

In addition, a protective cover is installed to cover the inlet end of the air cleaner duct to prevent wind from entering the air cleaner duct.
It is possible to effectively prevent the intrusion of water, mud, etc., but in this case, the number of parts must be kept as small as possible and assembly must be simple.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a protective cover for an air cleaner duct that has as few parts as possible and is easy to assemble. be.

In order to achieve the above object, the present invention is characterized in that a recess for fitting a head tube is formed on the front surface of the protective cover, and recesses for inserting a throttle cable, a clutch hose, etc., are formed on the left and right sides of the recess, respectively.

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of the motorcycle, and FIG. 2 is a perspective view of the top bridge and other parts viewed from above.

A head tube 3 is provided at the front end of the body frame 2 of the motorcycle 1, and the upper part of a front fork 5 that supports the front wheel 4 is supported by a top bridge 6 and a bottom bridge 7 so as to be freely steerable.A handle 8 is mounted on the top bridge 6. Be prepared.

The vehicle body frame 2 forms a pair on the left and right sides, and includes a main pipe 11 extending from the rear upper part of the head tube 3 to the rear of the side, a down tube 12 hanging down from the rear lower part of the head tube 3 to the rear and lower side of the head tube 3;
A down tube blower 13 extending rearward from the lower end of the down tube 12, a down tube blower 1
3, a center tube 14 extending forward and upward from the rear end thereof and connected to the rear end of the main pipe 11; and a seat rail 1 extending rearward of the main pipe 11.
5. It consists of a rear stay 16 that connects the substantially middle part of the seat rail 15 and the lower part of the center tube 14.

These left and right frame members are square pipes with a vertically long and rectangular cross section obtained by press-forming steel plates, and are connected to each other by a cross member.

A fuel tank 21 is installed across the main pipe 11 that constitutes the vehicle body frame 2, and the seat rail 1
A seat 22 is placed on top of the center tube 14, and a rear wheel 24 is supported via a rear fork 23 pivotally extended rearward from the lower part of the center tube 14. A cushion unit is provided.

the main pipe 11, the down tube 12,
Down tube blower 13, center tube 14
An engine 25 is mounted in the space surrounded by the down tube 12, and the engine is a 4-cylinder engine with two cylinders in the front and two cylinders in a side V shape. The left and right exhaust pipes 27 extend rearward, and the exhaust pipes 27 are supported by a muffler holder 27a that is fixed to the rear stay 16 and the down tube blower 13 by screws or welding. is provided with a pillion step 27b.

The bottom bridge 7 is provided with a fairing stay that fixes the base and extends forward of the vehicle body, and the front cowl 28 is attached to the vehicle body via the stay.

On the front end sides of the left and right main pipes 11, 11 and down tubes 12, 12, there are
As shown in the figure, a gusset plate 31 for reinforcing the vehicle body frame 2 is welded to the upper wall portion 32 of the gusset plate 31 located above the main pipes 11, 11. Holes are formed, and fitting holes 33 are provided at appropriate locations on the left and right side edges.

On the upper wall portion 32 of the gusset plate 31,
A resin gusset cover 41 is attached to cover the welding beat between the upper wall portion 32 and the main pipe 11.

The gusset cover 41 has a generally wing-like shape in plan view, and has a semicircular recess 42 corresponding to the head tube 3 on the front side of the left and right center, and a recess 44 corresponding to the mounting bracket 43 of the fuel tank 21 on the rear side. are formed respectively, and fitting pins 45, . . . corresponding to the fitting holes 33 of the upper wall portion 32 are protruded from the lower surface as shown in FIG.

Such a gusset cover 41 has a semicircular recess 42 located on the rear surface of the head tube 3, and the fitting pins 45, ... are fitted into the fitting holes 33, ..., and the upper wall portion 3 is closed.
2, and the fuel tank 21 is mounted on the recess 4.
The bracket 43 located at 4 is directly fastened to the upper wall 32 with a mounting bolt, and the fuel tank 21 presses down the rear side of the gusset cover 41, and the gusset cover 41 and the fuel tank 2
1, the upper wall portion 32 and the main pipe 11,
The welding beat with 11 is covered to improve the appearance.

A carburetor is disposed above the V-bank space of the engine 25 and below the main pipe 11, and in front of the carburetor, a fifth
As shown in the figure, an air cleaner 51 is provided.

The air cleaner 51 is attached to the vehicle body frame 2 by attaching the upper surface of the air cleaner case 52 to the lower surfaces of the main pipes 11 and 11, and the rear end of the lower surface of the air cleaner case 52 faces between the tension frames 2a, and the left and right side portions of the air cleaner case 52 Inlet end 5 of air cleaner duct 53, 53 protruding from
4 and 54 are arranged at the rear of the head tube 3,
An air cleaner duct cover 61 made of resin is provided to cover the inlet ends 54, 54 of the air cleaner duct 53.

The duct cover 61 is shown in a perspective view in FIG.
Further, as shown in the plan view, front view, and cross-sectional side view in FIGS. 7 to 9, respectively, there is a front surface portion 62 extending left and right outward and diagonally rearward, and a front surface portion 62 extending rearward from the upper edge of the front surface portion 62. It is comprised of an upper surface part 63 that extends out, and a lower surface part 64 that extends backward and diagonally downward from the lower edge of the front part 62, and the left and right side edges of the front part 62 extend slightly rearward.

A recess 65 that is semicircular in plan view and can be freely fitted into the head tube 3 is vertically provided approximately at the center of the front surface 62 in the left and right direction, and is located near the bottom of the front surface 62 and on both left and right sides of the recess 65. , the recess 6
Concave portions 66 and 67 having curved surfaces extending rearward and diagonally downward are formed adjacent to the throttle cable 5. In the embodiment, one of the concave portions 66 has a curved portion corresponding to the diameter of the throttle cable. The other concave portion 67 is formed into a curved surface corresponding to the diameter of the hydraulic hose of the clutch, and an upper locking protrusion 68 is provided protrudingly provided at approximately the center in the left-right direction of the upper surface portion 63 and near the rear end. A lower locking protrusion 69 is provided protruding approximately at the center in the left-right direction of 64 and near the rear end.

Such a duct cover 61 has a recess 65 fitted into the head tube 3, and a throttle cable a and a clutch hose b inserted into the left and right recesses 66, 66 from diagonally forward to diagonally downward, respectively, and the left and right portions of the lower surface portion 64. Down the side tube 12,1
2 and place the upper locking protrusion 68 on the gusset plate 3.
The air cleaner duct 53, 53 are arranged along the back surface of the front part 62 from the right and left sides of the front part 62, respectively, and the inlet ends 54, 54 are arranged so as to face each other at the left and right positions on the back side of the recessed part 65.

The present invention is configured as described above, and the inlet ends 54, 54 of the air cleaner ducts 53, 53 are
Since it is covered with
Intrusion of water, mud, etc. into the air cleaner 51 can be effectively prevented, and the durability of the air cleaner 51 and the like can be significantly improved compared to the past.

Further, the recess 64 at the center of the front part 62 is fitted into the head tube 3, and the throttle cable a and the clutch hose b are inserted into the left and right recesses 66, 67 of the recess 65, respectively, and the down tubes 12, 12 are inserted. The throttle cable a and the clutch hose b are held in the recesses 66 and 67, respectively, so that these throttle cables a and
and the clutch hose b prevent the duct cover 61 from shifting in the left-right direction. Therefore, despite the simple mounting structure in which the upper and lower locking protrusions 68 and 69 are simply fitted into the upper and lower grooves, respectively. , duct cover 61
is securely attached and held to the vehicle body frame 2.

As is clear from the above description, according to the present invention, the duct cover prevents wind, water, mud, etc. from entering the air cleaner duct, thereby further increasing the durability of the air cleaner, etc. Since the duct cover is attached to the vehicle body frame effectively, the number of parts can be reduced as much as possible, and the duct cover can be integrally molded including the locking protrusions, reducing costs. The duct cover also serves as a locking member for the throttle cable, clutch hose, etc., and has many excellent effects.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a side view of the motorcycle, FIG. 2 is a perspective view of the top bridge and other parts seen from above the driver's seat, FIG. 3 is a plan view of the gusset cover, and FIG. Figure 4 is a sectional view taken along the line shown in Figure 3, Figure 5 is a side view showing the installation of the air cleaner and duct cover, Figure 6 is a perspective view of the same, Figure 7 is a plan view of the duct cover, and Figure 8 is a front view of the same. Figure, No. 9
The figures are a cross-sectional view taken along the line of FIG. 8, and FIG. 10 is a cross-sectional view taken along the line of FIG. In the drawing, 2 is a vehicle body frame, 51 is an air cleaner, 53 is an air cleaner duct, 61 is a duct cover, 65 is a recess for fitting a head tube, 66,
67 are left and right recesses.

Claims (1)

[Claims] 1. A head tube fitting recess provided vertically on the front side, and left and right recesses formed on the left and right sides of the head tube fitting recess and working together with the vehicle body frame to hold a plurality of cables on the left and right sides of the head tube. A protective cover for an air cleaner duct in a motorcycle, etc., characterized in that the inlet end of the air cleaner duct is freely covered.