JPS623027B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motorcycle muzzle guard integrally equipped with a battery storage chamber, an air cleaner, and an intake passage.

In motorcycles, there are conflicting demands such that many parts must be installed in a very restricted space, and on the other hand, it must be easy to assemble at the time of manufacture or to be easy to maintain for the user. Furthermore, in order to meet these demands and reduce costs and vehicle weight, the number of mounting members such as brackets must be reduced as much as possible.

On the other hand, in recent years it has been called monocross suspension,
2. Description of the Related Art Motorcycles in which a shock absorber is interposed between the top of a rear arm having a triangular side surface and a frame have become widely used. This suspension is
The strength and rigidity of the entire vehicle body is well balanced,
There are many advantages such as being able to take a longer cushion stroke and improving handling stability, but since the shock absorber is located in the center of the vehicle body,
This causes the disadvantage that the space for installing the member is occupied and the space for installing the member is further narrowed.

The present invention was developed in view of the above circumstances, and has an extremely simple configuration in which the battery storage chamber, air cleaner, and intake passage are integrally formed with the mud guard, thereby making effective use of vehicle body space, facilitating assembly and maintenance, and facilitating installation. The present invention provides a muzzle guard for a motorcycle that can reduce the number of parts and the weight. Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

Fig. 1 is a vertical sectional side view of the muzzle guard according to the present invention, Fig. 2 is another side view and a bb-sectional view of the muzzle guard, Fig. 3 is a perspective view of the muzzle guard seen diagonally from above, and Fig. 4 is a side view of the muzzle guard according to the invention. It is also a perspective view seen diagonally from above. In FIG. 1, the reference numeral 1 indicates a frame of a motorcycle, and this frame 1 includes a steering head pipe 1a,
A main pipe 1b, a seat rail 1 connected to the rear end of the main pipe 1b via a connecting member 2
c, seat pillar tubes 1d, down tubes 1e, 1f, backstays 1g, cross tubes 1h, 1i, etc. Reference numeral 3 denotes a rear arm rotatably provided on the frame 1. As shown in the figure, the rear arm 3 is formed into a substantially triangular shape when viewed from the side, and the top 4 of the rear arm 3 and the connecting member 2 A buffer 5 is interposed between the two. The connecting member 2 is formed in a substantially funnel shape, and the rear end of the main pipe 1b is joined to the front small diameter part, and the front end of the seat rail 1c and the seat pillar are connected to both sides of the rear large diameter part. The upper end of the tube 1d is joined, and one end of the buffer 5 is also pivotally supported by a pin 6 inside the tube 1d. 7 indicates the engine, and 8 indicates the rear wheel. The mud guard 11 constituting the main part of the present invention is a frame 1 formed as described above.
It is installed in a triangular space when viewed from the inside, that is, from the side formed by the seat rail 1c, seat pillar tube 1d, and backstay 1g.

This muzzle guard 11 generally consists of the following parts: a muzzle guard main body 20, a shock absorber cover 30,
Battery storage chamber 40, first air chamber 50 and second
The outer wall, partition walls, brackets, etc. that form these air chambers 60 are all integrally molded from synthetic resin.

The mudguard main body 20 is not particularly different from the generally known shape except for a part, and has a front wall 21 and a side wall 2 which are curved along the rear wheel 8.
2. Joint portion 23 and wing-shaped attachment portion 2
It is formed from 4. The shock absorber cover 30 is a cylindrical body extending from the front wall 21 of the mud guard main body 20, and has an opening 31 at the tip thereof through which the shock absorber 5 passes, and a top portion of the rear arm 3 on the side thereof. A bulging portion 32 into which 4 is loosely fitted is continuous to the mud guard main body 20.

The battery storage chamber 40 is located in the mudguard main body 2.
A partition wall 41 that separates the front wall 21 of 0, a part of the shock absorber cover 30, and a second air chamber 60 to be described later;
It is formed by a front wall 42 and a lower wall 43 and is located at the bottom of the whole. Further, this battery storage chamber 40 is opened on one side of the vehicle body, and the opening shape is formed so as to widen toward the rear and upper side as shown in FIG. The reason for this shape is that the seat pillar tube 1d exists below the opening side of the battery storage chamber 40.
This is so that when storing the battery 12, it can be inserted as shown by the chain line 12' and then installed at the regular position shown by the solid line.

The first air chamber 50 is a space that constitutes a part of the intake passage, and this air chamber 50 is a continuous partition wall that has an approximately inverted triangular shape when viewed from the side of the vehicle body, as shown in FIGS. 2 and 4. 51, 52, and 53, and opens in the opposite direction to the battery storage chamber 40, that is, toward the other side of the vehicle body. A duct 13 is connected to the upper partition wall 51 of this air chamber 50.
A vent hole 54 communicating with the outside air is provided through the vent hole 54 .

The second air chamber 60 is formed by continuous partition walls 61, 62, and 63 in the lower front part of the first air chamber 50, and opens in the same direction as the first air chamber 50. The front partition wall 63 of the air chamber 60 is provided with a vent 64 that communicates with a carburetor (not shown). Incidentally, several studs 65 are provided in the air chamber 60 to support one side of a filter element, which will be described later. Reference numerals 15 and 16 are brackets for fixing the mudguard 11 formed as described above to the frame 1, and the bracket 15 has a mounting piece 17 projecting from the connecting member 2.
Furthermore, the brackets 16 are attached to engine holding brackets 18 fixed to the cross tube 1i by bolts.

70 is a filter element held so as to close the opening of the second air chamber 60; 80 is a filter cover that holds this filter element 70 and constitutes a part of the intake passage;
This filter cover 80 covers the first air chamber 50.
It is formed to close the opening of the That is, the contour shape of this filter cover 80 is as follows:
Partition walls 51, 52, 53 forming the first air chamber 50
It is formed to correspond to the shape of , and a mounting hole 81 is bored near its periphery. Further, on the inside of the filter cover 80, ribs for holding the filter element (not shown) and several studs for supporting the other surface of the filter element 70 are protruded. That is, inside the bulging portion 82 of this filter cover 80,
A portion is cut out and the filter element 7
A rib that presses the peripheral portion of the air chamber 0 and a stud that corresponds to the stud 65 provided in the second air chamber 60 are provided protrudingly.

Therefore, the outside air taken into the carburetor is
The air is supplied to the carburetor through an intake passage 90 indicated by an arrow in the figure. That is, the outside air taken in from above the end of the duct 13 is guided into the first air chamber 50 through the inside of the duct 13 and the vent 54,
Furthermore, the air passes through the filter element 70 from inside the bulge 82 of the filter cover 80 and is guided to the second air chamber 60, and is supplied to the vaporizer through the vent hole 64 provided in the front partition wall 63 of this air chamber 60. Ru.

As explained above, according to the present invention, since the battery storage chamber, the air cleaner, and the intake passage are formed integrally with the mud guard, it is possible to effectively utilize the mounting space for equipment components in a motorcycle, and it is possible to use the space where there are few mounting components. Assembly and maintenance become easier. Further, since the mudguard of the present invention can be formed by injection molding a synthetic resin, it also has the effect of reducing the weight and cost of the vehicle. Furthermore, the battery storage chamber that stores the heavy batteries is formed by sharing the front wall of the mudguard body with the cylindrical shock absorber cover, so it is rigid even though it is entirely made of synthetic resin. can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing a muzzle guard according to the present invention, Fig. 2 is a side view and bb sectional view of the muzzle guard seen from the other side, Fig. 3 is a perspective view seen diagonally from above, and Fig. 4 is a side view of the muzzle guard according to the present invention. The figure is a perspective view seen diagonally from above. 1...Frame, 3...Rear arm, 5...Buffer, 11...Mud guard, 12...Battery, 20...Mud guard body, 30...Buffer cover, 40...Battery storage chamber, 50...No. 1
air chamber, 51, 52, 53... partition, 54... vent, 60... second air chamber, 61, 62, 63...
...Partition wall, 64...Vent, 70...Filter element, 80...Filter cover, 90...
intake passage.

Claims (1)

[Claims] 1. A front wall 21 of the mud guard main body 20 and a battery storage chamber 40 whose sides are opened and which includes the cylindrical shock absorber cover 30 protruding from the front side of the front wall 21 as part of the partition wall. A substantially inverted triangular partition wall 5 that opens in the opposite direction to the opening direction of the partition wall 5.
1, and a second air chamber having an opening in the first air chamber formed by a partition wall 61 and laterally closed by a filter element 70. 60 and the mudguard body 2
The first and second air chambers 50 and 60 are provided with vents 54 and 64 that open to the outside, respectively, and the first and second air chambers 50 and 60 are integrally formed with synthetic resin. A muzzle guard for a motorcycle, characterized in that an intake passage is formed by a filter cover 80 that closes a side opening and a second air chamber 60.