JP2000128048A - Motor bicycle rear fender mounting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor bicycle rear fender mounting mechanism which can improve convenience of attaching and detaching a rear fender. SOLUTION: An upper front portion of a rear frame 20 supporting a rear fender 18 which covers a part of a rear wheel 17 is supported on a rear arm bracket (body frame) 9 by means of a bolt 29 inserted into the upper front part of the rear frame 20 in a vehicle width direction so that the upper front part can circularly move in the forward and reverse directions. A front end of the rear frame 20 is attached to a stopper plate 27 mounted on the rear arm bracket 9. The front end of the rear frame 20 is secured to the stopper plate 27 with a bolt 30 inserted into the stopper plate 27. Thereby, when the upper front part of the rear frame 20 is supported by the rear arm bracket 9 through the bolt 29, the rear fender 18 circularly moves around the bolt 29 as its center due to its tare. When the front end of the rear frame 20 comes to abut to the stopper plate 27, circular movement thereof is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rear fender mounting structure for a motorcycle.

[0002]

2. Description of the Related Art In a motorcycle, a rear fender covering a part of a rear wheel is supported by a rear frame, and the rear frame is attached to a body frame at a plurality of positions by bolts.

[0003]

However, in the conventional rear fender mounting structure, the rear fender is manually supported until the rear frame supporting the rear fender is attached to or temporarily attached to the vehicle body frame when the rear fender is attached or detached. Therefore, there is a problem that the desorption workability is poor.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a rear fender mounting structure for a motorcycle that can enhance the workability of attaching and detaching the rear fender.

[0005]

In order to achieve the above object, the first aspect of the present invention is directed to a front half of a rear frame supporting a rear fender which is formed separately from a vehicle body frame and covers a part of a rear wheel. The upper part is supported on the vehicle body frame by bolts inserted in the vehicle width direction, and the front end of the rear frame is abutted against a stopper plate provided on the vehicle body frame, and the front end of the rear frame is bolted through the stopper plate. It is characterized by being fixed to a stopper plate.

According to a second aspect of the present invention, in the first aspect of the present invention, a point of support of the rear frame to the vehicle body frame by the bolt that passes through the center of gravity of the assembly of the rear fender and the rear frame in the vehicle width direction. Is also arranged behind the vehicle body.

According to a third aspect of the present invention, in the first aspect of the present invention, the rear frame is disposed inside the rear fender, and only the upper front half and the front end of the rear fender are attached to the vehicle body frame. It is characterized by penetrating and projecting to the outside.

Therefore, according to the present invention, when the rear fender is mounted, the front half upper portion of the rear frame is supported by the vehicle body frame by bolts inserted in the vehicle width direction. In this state, the front end of the rear frame can be fixed to the stopper plate with good workability by bolts. In this case, if the center of gravity of the assembly of the rear fender and the rear frame is disposed behind the support point of the rear frame to the body frame by a bolt inserted in the vehicle width direction, the assembly of the rear fender and the rear frame will have its own weight. The rear frame is rotated around the bolt, and when the front end of the rear frame comes into contact with the stopper plate, the rotation is prevented. Therefore, there is no need to manually support the assembly of the rear fender and the rear frame.

When removing the rear fender,
Even if the rear fender is not supported by hand, the bolt fixing the front end of the rear frame to the stopper plate can be removed with good workability.In this state, the bolt for inserting the rear frame and the rear fender in the vehicle width direction can be removed. If you loosen it, you can turn it upwards around this,
Tires can be easily replaced without completely removing them from the body frame.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, a schematic structure of a motorcycle provided with a rear fender mounting structure according to the present invention will be described with reference to FIG.

FIG. 1 is a side view of a motorcycle 1. In FIG. 1, reference numeral 2 denotes a head pipe located at an upper front portion of a vehicle body, and a steering shaft (not shown) is rotatably inserted into the head pipe 2. ing. An upper end of a front fork 3 is supported on the steering shaft. A front wheel 4 is rotatably supported on a lower end of the front fork 3. An upper half of the front wheel 4 is covered by a front fender 5. Have been done. A handlebar 6 is attached to an upper end of a steering shaft (not shown).

On the other hand, a main frame 7 extends obliquely downward toward the rear of the vehicle body from the side pipe, and a pair of left and right down tubes 8 extends obliquely downward toward the rear of the vehicle body from the side view. After that, it is bent toward the rear of the vehicle body and extends substantially horizontally below the main frame 7 toward the rear of the vehicle body. The rear ends of the main frame 7 and the down tube 8 are connected to a rear arm bracket 9 formed in an arc shape.

A V-type two-cylinder engine 10 is housed and supported in a space surrounded by the main frame 7, the down tube 8 and the rear arm bracket 9, and the cylinders 10a and 10b before and after the engine 10 are accommodated. A carburetor 11 is arranged between the carburetors.

A fuel tank 12 is supported on the main frame 7 above the engine 10, and a main seat 13 and a tandem seat 14 are provided behind the fuel tank 12.
Are arranged respectively.

On the other hand, a rear wheel 17 is rotatably supported on the rear arm bracket 9 by a front end pivot shaft 16 of a rear arm 15 so as to be swingable. The upper half of the rear wheel 17 is covered by a rear fender 18. The rear arm 15
And a rear wheel 17 pivotally supported by the rear end thereof is suspended on the vehicle body side by a single rear cushion (not shown).
The impact from 7 is absorbed and reduced by the damping force generated in the rear cushion.

Thus, the motorcycle 1 according to the present embodiment
Adopts a belt drive system as a drive system, and a belt (not shown) is provided between a pulley (not shown) connected to the output shaft of the engine 10 and a wheel pulley 19 connected to the rear wheel 17. It is wound.

Here, the mounting structure of the rear fender 18 according to the present invention will be described with reference to FIGS. still,
FIG. 2 is an exploded side view showing a state before mounting the rear fender of the motorcycle, with a part broken away, FIG. 3 is a side view showing the state after mounting the rear fender, FIG. 4 is a partial perspective view of the rear fender mounting portion, 5 is an enlarged detail view of a portion A in FIG.

The rear fender 18 is mounted and supported on a rear frame 20 having a frame structure.
Is constructed by bridging a pair of left and right channel-shaped frame members 20a with three arch-shaped cross members 20b, 20c, and 20d arranged at appropriate intervals in the vehicle longitudinal direction. A fixing member 21 is inserted and welded to the front end of each of the left and right frame members 20a, and each fixing member 21 penetrates the rear fender 18 and projects forward of the vehicle body. Screw holes are formed. The periphery of the portion of the rear fender 18 through which the fixing member 21 penetrates is covered by a seal member 22.

A bracket 23 is provided on the upper end of the cross member 20b located at the forefront of the rear frame 20.
The bracket 23 penetrates through the upper front half of the rear fender 18 and protrudes to the outside of the rear fender 18, and a sleeve 24 is horizontally connected to the upper end thereof in the width direction. . A seal member 25 is provided around the portion of the rear fender 18 through which the bracket 23 passes.
Covered by As shown in detail in FIG. 5, the seal member 25 is fitted into a peripheral edge of an opening formed at the front end of the rear fender 18, and has a lip portion 2.
5a is in close contact with the periphery of the bracket 23 to perform a sealing function. A skirt portion 25b extends obliquely downward from the lower surface of the rear end of the seal member 25, and mud and the like that have been flipped up by the rear wheel 17 are effectively attached to the seal portion by the skirt portion 25b. Can be prevented.

On the other hand, the pair of left and right rear arm brackets 9 extend integrally above the main frame 7, and circular holes 26 are formed at the upper ends of the extending portions. A bent stopper plate 27 is provided between the left and right extending portions of the rear arm bracket 9, and circular holes 28 (see FIG. 2) are provided on the left and right portions of the vertically rising portion of the stopper plate 27. (Only one is shown).

When the rear fender 18 is attached, the rear fender 18 is supported by hand, and the sleeve 24 projecting upward from the front half thereof is fitted between the upper end extending portions of the pair of left and right rear arm brackets 9. A long bolt 29 is passed through the circular hole 26 and the sleeve 24 from the lateral direction in a state in which 24 is aligned with the circular hole 26 formed at the upper end of the rear arm bracket 9.

Then, the rear fender 18 is rotatably supported by the upper end extension of the rear arm bracket 9 in the front half upper portion.
The center of gravity of the assembly is disposed rearward of the vehicle body with respect to the support point of the rear frame 20 to the rear arm bracket 9 by the bolt 29 inserted in the vehicle width direction, so that the assembly of the rear fender 18 and the rear frame 20 has its own weight. Bolt 29
3, for example, is rotated clockwise from the state shown by the chain line in FIG. Therefore, it is not necessary to support the rear fender 18 by hand, and the bolt 30 that is inserted into the circular hole 28 (see FIG. 2) formed in the stopper plate 27 as it is is fixed at the front end of the rear frame 20. The rear fender 18 can be fixed to the stopper plate 27 with good workability by screwing the rear fender 18 to the stopper plate 27.
Finally, the nut 31 screwed into the end of the bolt 29
, The rear fender 18 can be fixed to the upper end extension of the rear arm bracket 9 with good workability.

When the rear fender 18 is to be removed, the fixing member 21 at the front end of the rear frame 20 can be moved to the stopper plate 2 even if the rear fender 18 is not supported by hand.
7 can be removed with good workability. In this state, if the bolts 29 for inserting the rear frame 20 and the rear fender 18 in the vehicle width direction are loosened, the bolts 30 are centered on the bolts 30 in FIG. As shown in the figure, the rear wheel 17 can be turned upward (counterclockwise), so that the rear wheel 17 can be easily moved in the direction of the arrow in FIG. Can be removed.

Further, in this embodiment, since the stopper plate 27 also functions as a reinforcing member at the front end of the rear frame 20, it is not necessary to provide a reinforcing member on the rear frame 20.

[0026]

As is apparent from the above description, according to the present invention, the upper and lower parts of the rear frame supporting the rear fender covering a part of the rear wheel are vertically inserted into the vehicle body frame by bolts penetrating in the lateral direction. While supporting rotatably,
The front end of the rear frame abuts against a stopper plate provided on the vehicle body frame, and the front end of the rear frame is fixed to the stopper plate by bolts inserted into the stopper plate. The effect that it can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle.

FIG. 2 is an exploded side view, partially broken away, showing a state before mounting the rear fender of the motorcycle.

FIG. 3 is a side view showing a state after mounting the rear fender of the motorcycle.

FIG. 4 is a partial perspective view of a rear fender mounting portion of the motorcycle.

FIG. 5 is an enlarged detail view of a portion A in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle 9 Rear arm bracket (body frame) 17 Rear wheel 18 Rear fender 20 Rear frame 27 Stopper plate 29, 30 Bolt

Claims (3)

[Claims] 1. A front part of a rear frame supporting a rear fender, which is formed separately from a vehicle body frame and covers a part of a rear wheel, is supported on the vehicle body frame by bolts inserted in a vehicle width direction. Abut the front end of the frame against the stopper plate installed on the body frame,
A rear fender mounting structure for a motorcycle, wherein a front end of the rear frame is fixed to the stopper plate by a bolt inserted into the stopper plate. 2. The vehicle according to claim 1, wherein a center of gravity of the assembly of the rear fender and the rear frame is disposed rearward of a vehicle body with respect to a support point of the rear frame to the vehicle body frame by the bolt inserted in a vehicle width direction. A motorcycle rear fender mounting structure as described. 3. The rear frame is disposed inside the rear fender, and only the front upper part and the front end of the rear frame are attached to the vehicle body frame and protrude outside through the rear fender. Item 2. A rear fender mounting structure for a motorcycle according to Item 1.