JPH0241114Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a mounting structure for a rear arm for supporting the rear wheel of a motorcycle or three-wheeled motor vehicle (hereinafter referred to as a motorcycle or the like).

[Prior art]

In a motorcycle or the like, a rear arm is swingably supported at the rear end of a vehicle body frame, and is supported by the rear end of the rear arm. The rear arm is pivoted by aligning the axes of the pivot hole on the rear arm side and the pivot hole on the vehicle body frame side, and passing the support shaft through both the pivot holes. Therefore, when assembling the rear arm to the vehicle body frame, it is necessary to ensure that the axes of both pivot holes are aligned, which makes it difficult for one person to do the work alone, so it is usually done by two people. The need arose.

[Purpose and structure of the idea]

An object of the present invention is to provide a rear arm mounting structure for a motorcycle, etc., which allows even one person to easily assemble the rear arm.

To achieve the above object, the present invention provides a motorcycle or the like in which the front end of a rear arm for supporting the rear wheel is pivoted to the rear part of the body frame via a support shaft.
The present invention is characterized in that guide plates for guiding and locking the front end of the rear arm when the rear arm is assembled are provided above and below the pivot hole at the rear of the vehicle body frame.

[Example of idea]

The present invention will be explained below with reference to embodiments shown in the drawings.

In the figure, 1 is a vehicle body frame, 2 is a rear arm pivoted to the rear of the vehicle body frame 1, 3 is a rear wheel supported at the rear end of the rear arm 2, and 4 is a rear wheel 3.
This is a mudguard plate that covers the upper half of the roof.

At the rear of the vehicle body frame 1, pivot holes 5, 5 are provided in the left and right frames, and a rear arm 2 is provided.
A pivot hole 6 is provided at the front end of the pivot hole 6 in correspondence with the pivot holes 5, 5 mentioned above. Further, guide plates 9 and 10 are fixed in the vicinity of the pivot hole 5 of the vehicle body frame 1 at positions above and below the pivot hole 5, respectively. The distance between the two plates is tapered, widening towards the rear and narrowing towards the front. When the front end of the rear arm 2 is inserted between the guide plates 9 and 10, the axis of the pivot hole 6 is aligned with the axis of the pivot hole 5, and in this aligned state, the support shaft 7 passes through both pivot holes 5 and 6. Support shaft 7
A nut 8 is screwed and fixed to the shaft end of the shaft.

On the other hand, the front end 4a of the mudguard plate 4 is formed in a concave shape, and the concave portion of the front end 4a is connected to the upper guide plate 9.
It is inserted into the rear end of the As shown in FIG. 3, this locking structure may be constructed by forming a recess on the guide plate 9 side, and fitting the front end 4a of the plate-shaped mudguard plate 4 into the recess.

In the rear arm mounting structure described above, when assembling the rear arm 2 to the vehicle body frame 1, the front end of the rear arm 2 is attached to the guide plates 9, 10 from the rear of the vehicle body frame 1, as shown by the arrow in FIG.
Insert it between the two. By this insertion operation, the front end of the rear arm 2 advances forward while being guided by the inner surfaces of the guide plates 9 and 10, and is automatically locked when the axes of the pivot holes 5 and 6 coincide. . In order to further ensure the locking state in which the axes coincide with each other, a locking plate 11 as shown by a chain line may be provided on the front side of the pivot hole 5.

As described above, when the axes of both the pivot holes 5 and 6 are aligned, the support shaft 7 can be smoothly inserted into the pivot holes 5 and 6, so the work of assembling the rear arm 2 becomes extremely easy. . Also, like this, both pivot holes 5 and 6
Since the axes of the parts can be automatically aligned, assembly can be performed by a single worker.

Further, the rear end of the upper guide plate 9 can also be used as a locking part for the front end 4a of the mudguard plate 4. In particular, as in the above embodiment, if the locking structure between the rear end of the guide plate 9 and the front end 4a of the mudguard plate 4 is a fitting mechanism that utilizes unevenness, the trouble of screwing can be saved. The mudguard plate 4 can be easily assembled, and the assembly workability can be further improved.

Note that although the above embodiment relates to a motorcycle, the present invention can also be applied to a tricycle or the like having a similar rear arm structure.

[Effect of idea]

As described above, the present invention provides a motorcycle or the like in which the front end of a rear arm for supporting the rear wheel is pivoted to the rear of the body frame via a support shaft, and the upper and lower sides of the pivot hole in the rear of the body frame are connected to each other. In addition, since a guide plate is provided to guide and lock the front end of the rear arm when assembling the rear arm, the front end of the rear arm is guided to the guide plate while being assembled, and the rear arm is automatically assembled. The pivot holes of the vehicle body frame and the vehicle body frame can be aligned.
Therefore, the work of assembling the rear arm to the vehicle body frame can be easily performed by a single worker.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing the main parts of a motorcycle having the rear arm mounting structure of the present invention;
FIG. 2 is an exploded perspective view of the same essential parts, and FIG. 3 is a side view showing another embodiment of the rear arm pivot portion. 1...Vehicle frame, 2...Rear arm, 3...
...Rear wheel, 5, 6... Pivot hole, 7... Support shaft, 9,
10...Guide plate.

Claims (1)

[Scope of utility model registration request] In a motorcycle or the like in which the front end of a rear arm for supporting the rear wheel is pivoted to the rear of the body frame via a support shaft, when the rear arm is assembled to the upper and lower sides of the pivot hole at the rear of the body frame. A rear arm mounting structure for a motorcycle, etc., characterized by providing a guide plate for guiding and locking the front end of the rear arm.