JPH10297569A - Body rear structure of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve in relative positional accuracy in facilitating a manufacturing process, and achieve a design change and improve assembleability by attaching a separate rear bracket detachably to the rear of a body frame, and installing a rear fender, frame cover, a tail lamp and a car-mount tool in this rear bracket. SOLUTION: This body rear structure is provided with a frame cover 34 covering both symmetrical sides of a seat rail 10 and a seat stay 11, and a tail lamp 35 is set up in a rear end of this frame cover 34. A separate rear bracket 36 is detachably attached to a rear end part of the seat rail 10 turning to the hind part of a body frame 2, and likewise a rear fender 30, a frame cover 34 and the tail lamp 35 are attached to this rear bracket 36. With this constitution, the manufacture of the body frame 2 becomes easy, and thereby relative positional accuracy can be improved. Moreover, in the case where a design for the forms of body rear parts is changed, it will do that the form of the rear bracket 36 alone is enough to be done, and thereby assembleability in the body can be also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear body structure of a motorcycle in which a plurality of components provided at a rear portion of a body frame are mounted in an improved manner.

[0002]

2. Description of the Related Art At the rear of a body frame of a motorcycle,
Starting from the rear fenders that cover the rear wheels, tail lamps, frame covers, and other vehicle rear parts are attached. In addition, simple in-vehicle tools are provided in a space such as an upper portion of the rear fender. These vehicle body rear parts and vehicle-mounted tools are detachably fixed to a plurality of mounting brackets independently provided on the vehicle body frame.

[0003]

However, since the rear parts of each vehicle body are independently mounted on the vehicle body frame as described above, it is necessary to provide a large number of mounting brackets on the vehicle body frame by welding. There is a problem that manufacturing of the body frame becomes difficult.

Further, depending on the accuracy of the welding position of each mounting bracket, there is a defect that the relative position (joint) between adjacent rear parts of the vehicle body is displaced, such as the rear fender and the frame cover or the frame cover and the tail lamp. Likely to occur.

In addition, when the shape of a specific rear part of the vehicle body is to be changed in design, the mounting is often difficult without changing the shape and position of the mounting bracket on the body frame side. Therefore, it is not possible to change the design of the rear part of the vehicle body without doing so, which is disadvantageous in that the vehicle body frame is shared.

Further, since it is not possible to adopt an assembly procedure of assembling the rear parts of each vehicle body in advance to form a unit and attaching the unit to a vehicle body frame, the assemblability of the vehicle body is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The present invention facilitates the manufacture of a vehicle body frame, improves the relative positional accuracy of adjacent vehicle body rear parts, and changes the vehicle body frame. To provide a rear body structure of a motorcycle in which the shape of the rear parts of each vehicle body can be changed in design without performing the same, and the rear parts of each vehicle body can be assembled in advance to improve the assemblability of the vehicle body. With the goal.

[0008]

In order to achieve the above object, a rear body structure of a motorcycle according to the present invention has a rear bracket detachably attached to a rear portion of a vehicle body frame, and a rear fender attached to the rear bracket. And a frame cover, a tail lamp, and a vehicle-mounted tool.

With such a vehicle body rear structure, the rear fender, the frame cover, the tail lamp, and the vehicle-mounted tools are all mounted on the rear bracket. Therefore, dedicated mounting brackets for mounting these vehicle body rear parts are provided on the vehicle body frame. There is no need to provide a large number of them, making it easier to manufacture the body frame, and since each body rear part is attached to a common rear bracket, the relative positional accuracy between adjacent body rear parts is improved, and joints between parts are improved. Defects such as displacement are less likely to occur.

Further, when the shape of a specific rear part of the vehicle body is to be changed in design, it is only necessary to change the shape of the rear bracket, and it is not necessary to change the body frame. This is advantageous in that the components such as the rear fender and the tail lamp are preliminarily assembled on the rear bracket, and can be assembled into a unit before being attached to the vehicle body frame.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view showing an example of a motorcycle to which a vehicle body rear structure according to the present invention is applied.

As shown in FIG. 2, a body frame 2 of the motorcycle 1 has a head pipe 3 located at the front of the head.
A pair of left and right thick main pipes 4 extending obliquely downward and rearward from the head pipe 3, a pair of left and right frame bodies 5 connected to the rear end thereof, and a pair of upper and lower bridge members 6 and 7 connecting between them; An engine suspension arm 8 provided at a lower portion of the front end of the pipe 4, a pair of left and right seat rails 10 extending rearward from the frame body 5, and a seat rail extending rearward from the frame body 5;
The seat stay 11 includes a pair of left and right seat stays 11 connected to an intermediate portion of the seat 10, and a plurality of bridge members 12 to 15 connecting the left and right seat rails 10 and the seat stays 11.

A front fork 18 for supporting a front wheel 17 is provided on the head pipe 3 with a handlebar 19 and a front fender.
A swing arm 23 supporting a rear wheel 22 is pivotally supported on a pivot shaft 21 provided between the left and right frame bodies 5 so as to be pivotable up and down. Further, the engine 25 is suspended over the engine suspension arm 8 and the upper and lower bridge members 6 and 7, and the engine 25 is suspended.
The output of 25 is transmitted to the rear wheel 22 by a chain 26.

Further, a fuel tank 27 is provided above the main pipe 4, and the seat rail 10 and the seat stays are provided.
A seating seat 28 and a pillion seat 29 are placed on an upper portion of the vehicle 11, and a rear fender 30 that covers the rear wheel 22 is attached to a lower portion thereof. In addition, cowling members 31 and 32 are provided to cover the front part of the vehicle body and the lower part of the engine 25, while a frame cover 34 is provided to cover the left and right sides of the seat rail 10 and the seat stay 11, and a rear end of the frame cover 34 is provided. The tail lamp 35 is arranged.

[0015] A seat rail to be a rear portion of the body frame 2
A separate rear bracket 36 is detachably attached to the rear end of the unit 10, and the rear fender 30, the frame cover 34, and the tail lamp 35 are attached to the rear bracket 36.

FIG. 2 shows a vehicle body frame 2 and a rear bracket.
FIG. 3 is an exploded perspective view showing an assembling relationship between the rear bracket 36, the rear fender 30, the frame cover 34, and the tail lamp 35, and FIG. 3 is a perspective view of the rear bracket 36 alone.

The rear bracket 36 is formed by spot welding a bottom plate member 37 formed by pressing a steel plate and a rear plate member 38, and includes a bottom surface 36a, a side surface 36b, and a rear surface 36.
It is formed in a substantially tray shape having c. The material for forming the rear bracket 36 is not limited to a steel plate. For example, the rear bracket 36 may be integrally formed of a synthetic resin.

Three fender fixing bolts 40 extending downward are fixed to the bottom surface 36a of the rear bracket 36, and vehicle-mounted tool hooks 41, 42 are formed at the front and rear.
On the other hand, the left and right side surfaces 36b have fender mounting holes 43 on the front side.
However, a frame mounting hole 44 is formed on the rear side, and a fastening nut 45 is fixed inside the frame mounting hole 44. Further, the rear surface 36c is formed so as to rise up high, and four lamp fixing holes 46 and cuts 47 are formed.

On the other hand, frame mounting pieces 49 and 50 are provided on the left and right sides of the front and intermediate portions of the rear fender 30, and a box-shaped mounting base 51 having a flat upper surface is formed at the rear of the rear fender 30. Three mounting holes 52 are formed in the upper surface. The upper and lower two mounting holes 53,
A bracket fastening boss 55 is formed on the inner surface near the rear of the frame cover 34. Further, the tail lamp 35 is provided with four mounting screws 56 extending forward.

As shown in FIGS. 1 and 2, a frame mounting hole for the rear bracket 36 is provided inside a pair of left and right frame brackets 58 provided at the rear of the body frame 2.
The bolt 44 inserted into the frame bracket 58 from the outside in the vehicle width direction is fastened to the fastening nut 45 of the rear bracket 36 by overlapping the portion 44 and the rear bracket 36
Is fixed to the rear part of the body frame 2.

The upper surface of the mounting base 51 of the rear fender 30 is applied to the bottom surface 36a of the rear bracket 36 from below.
The nut 61 is fastened from below through a washer 60 through the mounting holes 52. The frame mounting pieces 49 and 50 provided at the front and intermediate portions of the rear fender 30 are fastened to fastening bosses 64 and 65 provided on the vehicle body frame 2 with screws 62 and bolts 63, respectively.

A mounting hole at the front of the frame cover 34
53, 54 are fastened to fastening bosses 66, 67 provided on the body frame 2 with screws 68, 69, and the bracket fastening boss 55 on the inner surface of the frame cover 34 is a portion of the fender mounting hole 43 on the side surface 36b of the rear bracket 36. Rear bracket 36
A bolt 71 inserted into the fender mounting hole 43 from the inside is fastened to the bracket fastening boss 55.

A rubber bush 72 is fitted into each of the four lamp fixing holes 46 on the rear surface 36c of the rear bracket 36, and four mounting screws 56 of the tail lamp 35 are inserted into these rubber bushes 72 from the rear and forward. The nut 73 is fastened.

Further, as shown in FIG. 4, an in-vehicle tool 74 is mounted on the bottom surface 36a of the rear bracket 36, and the in-vehicle tool 74 is pressed by a rubber fixed band 75. In the fixed band 75, metal rings 76 and 77 provided on the front and rear ends thereof are hooked on the vehicle-mounted tool hooks 41 and 42 on the front and rear sides of the rear bracket 36.

As described above, the rear bracket 36 provided at the rear of the vehicle body frame 2 has a structure in which all the rear parts of the vehicle body such as the rear fender 30, the frame cover 34 and the tail lamp 35 and the accessories such as the vehicle-mounted tool 74 are attached. Has become.

According to this structure, there is no need to provide a large number of dedicated mounting brackets for mounting the vehicle body rear parts 30, 34, 35 and the vehicle-mounted tool 74 on the vehicle body frame 2 side. The rear brackets are common to the rear parts 30, 34, and 35, making it easier to use.
Since it is attached to 36, the relative position accuracy of the adjacent rear part of the vehicle body, for example, the rear fender 30 and the frame cover 34 is improved, and defects such as misalignment between the two parts 30, 34 hardly occur.

Further, when the shape of a specific rear part of the vehicle body, for example, the shape of the frame cover 34 or the tail lamp 35 is changed, only the shape of the rear bracket 36 needs to be changed, and the change of the body frame 2 is unnecessary. Because
This is advantageous in that the vehicle body frame 2 can be used in common. In addition, since parts such as the rear fender 30 and the tail lamp 35 can be pre-assembled into the rear bracket 36 and assembled into a unit before being mounted on the vehicle body frame 2, The assemblability is also improved.

[0028]

As described above, in the motorcycle body rear structure according to the present invention, a separate rear bracket is detachably attached to the rear of the vehicle body frame, and the rear fender, the frame cover, and the tail lamp are mounted on the rear bracket. And a vehicle mounted tool.

According to this, since it is not necessary to provide a large number of mounting brackets on the vehicle body frame when mounting each vehicle body rear part, it is possible to easily manufacture the vehicle body frame. In addition, the relative positional accuracy of the adjacent rear body parts can be improved, and the shape of each rear body part can be changed in design without changing the body frame. Further, the rear parts of each vehicle body can be assembled in advance to improve the assemblability of the vehicle body.

[Brief description of the drawings]

FIG. 1 is a left side view showing an example of a motorcycle to which a vehicle body rear structure according to the present invention is applied.

FIG. 2 is an exploded perspective view of a vehicle body frame, a rear bracket, a rear fender, a frame cover, and a tail lamp showing one embodiment of the present invention.

FIG. 3 is a perspective view of a rear bracket alone.

FIG. 4 is an exploded perspective view of a rear bracket, a vehicle-mounted tool, and a fixing band.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 30 Rear fender 34 Frame cover 35 Tail lamp 36 Rear bracket 74 On-board tool 75 Fixed band

Claims (1)

[Claims] 1. A separate rear bracket 36 is detachably attached to a rear portion of a vehicle body frame 2.
Rear fender 30, frame cover 34 and tail lamp
The rear body structure of a motorcycle, which is equipped with 35 and on-board tools 74.