JP2646487B2 - Motorcycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a motorcycle having an engine unit as a main frame.

(Prior Art) In general, in a motorcycle, an engine unit is mounted on a frame in a central portion of a vehicle body, a front wheel is supported on a steering head in a front upper portion of the frame, and a swing arm is pivotally supported on a rear lower portion. A layout that supports the rear wheel at the end is adopted.

Further, a footrest, a prop stand, a brake lever, a change lever, a torque link of a rear brake, and the like are arranged in a lower rear portion of the frame, and these mounting brackets and the like are mounted on the frame by welding or the like.

However, in a motorcycle that uses an engine unit as a main frame, a steering head is connected to the engine unit, and a swing arm is pivotally supported, the space around the swing arm pivot is small, and a footrest or a lever as in the related art is used. There is a problem that it is difficult to attach many parts such as a prop, especially a prop stand and a rear brake torque link.

(Problems to be Solved by the Invention) As described above, in a frameless motorcycle having an engine unit as a main frame, the mounting of a prop stand and a rear brake torque link is complicated, and the difficulty is high. In view of the foregoing, the present invention provides a motorcycle in which the arrangement of the mounting brackets of the prop stand, the torque link or the footrest is arranged, the space is effectively used, the number of parts is reduced, and the structure is simplified. Aim.

[Configuration of the invention]

(Means for Solving the Problems) In order to achieve the above object, in the motorcycle of the present invention,
In a motorcycle in which an engine unit arranged in the center is a main frame and front and rear wheels and a rear wheel are suspended,
A pair of left and right brackets protrude from the upper and lower portions of the rear surface of the engine unit. The upper and lower parts of the swing arm shaft support bracket sandwiched between these brackets are fixed with bolts and fastening nuts, and both lower brackets Secure the prop stand mounting bracket and the rear brake torque link connecting bracket together with the through bolts and tightening nuts on the outer side of the bracket, and swing the upper and lower parts of the left and right footrest mounting brackets. The upper and lower sides of the shaft support bracket are screwed to the sides of the prop stand mounting bracket and the torque link connection bracket.

(Function) With this configuration, when the swing arm shaft support bracket is mounted on the engine frame, the prop stand mounting bracket and the rear brake torque link connecting bracket are simultaneously mounted on the left and right sides of the engine frame. The number of parts is reduced, and the workability of disassembly and assembly is improved.

In addition, since the footrest mounting bracket is mounted on the outside of the bracket, it can be made compact and the appearance is neat.

(Embodiment) A description will be given below with reference to the drawings showing an embodiment of the present invention.

First, in FIG. 3, in this motorcycle, an engine unit 1 has a function of a main frame and is arranged at a central portion, and front and rear wheels 2 and a rear wheel 3 are arranged before and after that.

That is, a box-shaped frame 4 is continuously provided at the front upper part of the engine unit 1, and a front fork 6 is supported by a steering head 5 formed at the front end thereof so as to be steerable, and the front wheel 2 is suspended.

A front end of a swing arm 7 is pivotally supported at a lower rear portion of the engine unit 1, and a rear wheel 3 is suspended at the rear end.

A seat rail 8 extending rearward is supported on the rear upper portion of the engine unit 1, and a seat 9 and a fuel tank 10 are placed thereon.

Next, in FIG. 1 and FIG.
On the rear end surface 1a, a pair of left and right bracket pieces
11a, 11b and 12a, 12b protrude. This bracket piece
Through bolts 14 and 15 are inserted through 11a, 11b and 12a, 12b in such a manner that the upper and lower portions of the swing arm support bracket 13 are sandwiched therebetween, and are fixed by fastening nuts 16 and 17.

At the center of the swing arm support bracket 13, a support shaft 18 is rotatably supported by a bearing 19, and a swing arm front end 7a is fixed to both ends thereof, and the swing arm 7 is supported so as to swing freely. .

Bracket pieces 20 and 21 are further formed on the upper and lower portions of the swing arm shaft support bracket 13. The upper end of a rear cushion unit 22 is connected to the upper bracket piece 20 by a pivot 23. Swing lever on lower bracket piece 21
The base end of 24 is swingably connected by a pivot 25, and the lower end of the rear cushion unit 22 is connected to the front end thereof.
The center of the swing lever 24 and the base end of the swing arm 7 are connected by a link 26, and the swing arm 7
And, the vertical movement of the rear wheel 3 is buffered by the rear cushion unit 22.

The through bolt 15 and the tightening nut 17 which fix the lower part of the swing arm shaft support bracket 13 include a bracket piece 12a,
The prop stand mounting bracket 27 attached to the outer surface of 12b and the torque link connecting bracket 28 of the rear brake 55 (FIG. 3) are fastened and fixed together.

As shown in FIGS. 4, 5, and 6, the prop stand mounting bracket 27 has the through bolt 15 at its upper end.
An attachment piece 31 having a screw hole boss 30 on the outer surface and a bolt insertion hole 32 on the inner surface is projected. The lower portion extends outward and downward, has a shaft hole 33 at the lower end portion, and a spring locking pin 35 protrudes from the inner surface.

In this manner, the prop stand mounting bracket 27 is fixed by the through bolt 15 and the fastening nut 17 through the insertion hole 29, and is firmly fixed to the lower surface of the swing arm mounting bracket 13 by the fastening bolt 36 through the bolt insertion hole 32. Is done. The base end of a prop stand 38 is rotatably attached to the shaft hole 33 by a pivot 37. The upper end of the spring 39 is engaged with the spring locking pin 35, and the prop stand 38 is moved from the rear horizontal position (FIG. 2) to the lower use position (first position).
(Fig.).

On the other hand, the torque link connecting bracket 28 is shown in FIG.
As shown in FIG. 8, a through hole 40 for a through bolt and a shaft hole 41 are provided, a mounting hole 44 having a screw hole boss 42 on the outer surface and a bolt through hole 43 on the inner surface is projected.

The torque link connection bracket 28 is similar to the prop stand mounting bracket 27 in that the bolt insertion hole
It is also fastened from below by fastening bolts 45 passed through 43. The front end of the torque link 46 of the rear brake 55 is pivotally connected to the shaft hole 41.
Linked by 47.

Further, screw hole bosses 48a and 48b are protrudingly provided on both upper sides of the swing arm shaft support bracket 13, and the screw hole boss 4
8a and the screw hole boss 30 of the prop stand mounting bracket 27, and between the screw hole boss 48b and the screw hole boss 42 of the torque link connection bracket 28, respectively, of the footrest mounting brackets 49a and 49b. The upper and lower ends are fixed by fastening bolts 50, and the outer sides on both sides of the swing arm support shaft 18 are concealed.

The footrest mounting brackets 49a and 49b are provided with footrest holders 51a and 51b projecting from the outer surface thereof, and the footrest bar 52 is supported so as to be able to be turned upside down. A change lever 53 is pivotally supported by the footrest holder 51a, and a brake lever 54 is pivotally supported by the footrest holder 51b.

As described above, since the swing arm support bracket 13 is fixedly provided on the rear surface of the engine unit 1, in addition to the function of supporting the swing arm 7, the prop stand is mounted, the torque link is connected, and the footrest is mounted. By mounting the brackets 27, 28, 49a, and 49b, a number of devices and components such as the prop stand 38, the torque link 46, the footrest bar 52, the change lever 53, the brake lever 54, and the rear cushion device can be compactly arranged.

〔The invention's effect〕

As described above, the motorcycle according to the present invention, in which the front and rear wheels are suspended from the front and back with the engine unit disposed in the center as the main frame, has the swing arm shaft support bracket attached to the rear end surface of the engine unit and ,
The prop stand mounting bracket and the rear brake torque link connecting bracket are attached to the lower side on both sides and fixed together with bolts and tightening nuts, and the footrest mounting brackets are attached on both sides and mounted on the engine. A large number of necessary parts can be compactly arranged at the rear part of the unit, and the number of parts is reduced, so that disassembly and assemblability are improved, and there are effects of improving the appearance.

[Brief description of the drawings]

1 is a front view around a swing arm shaft support bracket showing an embodiment of the present invention, FIG. 2 is a side view around a swing arm shaft support bracket of FIG. 1, and FIG. 3 is a swing diagram of FIG. FIG. 4, FIG. 5, FIG. 5 and FIG. 6 show a motorcycle provided with an arm shaft support bracket, in which the prop stand mounting bracket arranged on the swing arm shaft support bracket of FIG. 1 is enlarged. The front view, the right side view and the plan view shown in FIG. 7, and FIGS. 7 and 8 are enlarged front views and the left side of the torque link coupling bracket arranged on the swing arm shaft support bracket in FIG. FIG. 1 ... engine unit, 2 ... front wheel, 3 ... rear wheel, 7
…… Swing arm, 11a, 11b …… Top bracket piece, 1
2a, 12b… Lower bracket piece, 13… Bracket for swing arm shaft support, 14, 15… Through bolt, 16, 17… Fastening nut, 18… Swing arm support shaft, 27… Prop stand mounting Wear bracket, 28… Torque link connection bracket, 30… Screw hole boss, 38… Prop stand, 42… Screw hole boss, 46… Torque link, 49a, 49b
…… Footrest mounting bracket, 51a, 51b …… Footrest holder, 52 …… Footrest bar, 55 …… Rear brake.

Claims (1)

(57) [Claims] 1. A motorcycle in which a front and rear wheels are suspended from front and rear with an engine unit disposed in a central portion as a main frame, a pair of left and right bracket pieces projecting from upper and lower portions of a rear surface of the engine unit. The upper and lower parts of the swing arm support bracket sandwiched between these bracket pieces are fixed with through bolts and tightening nuts, and the torque links for the prop stand mounting bracket and rear brake are attached to the outer surfaces of both lower bracket pieces, respectively. Fix the connecting bracket together with the through bolts and fastening nuts.
A motorcycle characterized in that the upper and lower portions of the left and right footrest mounting brackets are screwed to the upper left and right sides of the swing arm shaft support bracket and to the side surfaces of the prop stand mounting bracket and the torque link connection bracket. .