JP3434367B2 - Motorcycle rear suspension fittings - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a rear suspension mount for a motorcycle. More specifically, the present invention relates to an improvement in the structure and versatility of a mounting tool for mounting a two-type rear suspension mounted on both rear sides of a motorcycle body to a vehicle body frame side.

[0002]

2. Description of the Related Art Generally, in a motorcycle, as shown in FIG. 6, a rear suspension 1 is located at a lower end side of a rear axle 2.
It is supported by the swing arm 3 connected to and is supported by the vehicle body frame 4 on the upper end side. Then, in order to effectively perform the function of the rear suspension 1, the arrangement line L of the rear suspension 1 is inclined toward the front side at an angle θ in consideration of dynamics.

However, in the motorcycles provided by the manufacturer, the angle θ is set so that it is effective even for two passengers, except for small cars. Therefore, if the function of the rear suspension 1 is to be more effectively exerted when only one passenger is present, it becomes necessary to change the angle θ small.

Conventionally, as a means for changing the angle θ, the rear suspension mounting member 5 fixed to the vehicle body frame 4 is detached and the position is changed and fixed again.

In the conventional means for re-fixing the rear suspension mounting member 5 as described above, there is a problem in that the body frame 4 and the like have to be drilled, welded and the like, and the work is troublesome.

As a means for re-fixing the rear suspension mounting member 5, it is conceivable to use a mounting tool having a tightening structure or the like to avoid troublesome work such as punching and welding. However, if it is intended to have versatility that can be applied to a large number of vehicle types, a problem that the structure becomes complicated occurs.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems and problems, and is capable of changing the angle of the rear suspension arrangement line with simple structure and versatility. It is an object of the present invention to provide a rear suspension fitting for a motorcycle according to the above.

[0008]

In order to solve the above-mentioned problems, the rear suspension mount for a motorcycle according to the present invention employs the following means.

That is, according to the first aspect of the present invention, the first mounting portion connected to the rear suspension mounting member fixed to the vehicle body frame, and the second mounting portion connected to the vehicle body frame side mounting member of the rear suspension by being inserted therethrough. A rear suspension mount for a motorcycle, comprising: a plate that maintains a constant gap between the first mount part and the second mount part; and an arm that is fixed to the second mount part and that protrudes from the plate and contacts the vehicle body frame. 2 The mounting part can be attached to and detached from the plate.

According to a second aspect of the present invention, in the motorcycle rear suspension attachment according to the first aspect, the angle of the arm can be adjusted with respect to the plate.

[0011]

According to the above-mentioned means, in claim 1, the original support point of the rear suspension on the side of the vehicle body frame is the first mounting portion, and the second mounting portion with a certain distance from the first mounting portion is the rear. The angle of the rear suspension line is changed to serve as a new support point for the body frame of the suspension. This structure is simple in that the first mounting portion and the second mounting portion are provided via the plate. In addition, this structure can be adapted to vehicle body frames having different dimensional specifications by rotationally adjusting the position of the second mounting portion around the first mounting portion. For this reason,
The problem of providing a rear suspension mounting tool for a motorcycle, which has a simple structure and versatility and in which the angle of the rear suspension arrangement line can be changed, has been solved, and the second mounting portion is attached to the plate. The detachable structure provides a degree of freedom in the mounting process of the second mounting portion. The arm that abuts the body frame enhances the mounting strength.

According to the second aspect, in the operation of the first aspect, the angle of the arm can be changed with respect to the vehicle body frame having different size specifications.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rear suspension mount for a motorcycle according to the present invention will be described below with reference to FIGS.

1 to 3 show a first embodiment of a rear suspension mount for a motorcycle according to the present invention.

In this embodiment, the body frame-side mounting member 11 of the rear suspension 1 has an eye shape, and the rear suspension mounting member 5 fixed to the body frame 4 comprises a threaded rod 51, a washer 52, and a nut 53. Is shown. The rear suspension 1 of this embodiment is composed of a coil spring 12, a damper 13, a reservoir tank 14 and the like.

In this embodiment, as shown in FIG. 1, the washer 52 and the nut 53 of the rear suspension mounting member 5 are used as a part of the first mounting portion 6, and the second mounting portion 7 and the plate are provided on the outside thereof. 8 and arm 9. In addition,
Each of the constituent parts is formed of a steel-based metal material in terms of load strength and the like.

The first mounting portion 6 is composed of a cylindrical collar that can be fitted into the threaded rod 51 of the rear suspension mounting member 5. The first mounting portion 6 fitted to the threaded rod 51 of the rear suspension mounting member 5 is fixed to the rear suspension mounting member 5 by washer 52 and nut 53. It The nut 53 of the rear suspension mounting member 5
Is provided with a spherical head portion 531 for the purpose of preventing injury due to touch.

The second mounting portion 7 has a cylindrical shaft 71, a washer 72, and a cylindrical shaft 7 which can be inserted into the eye shape of the mounting member 11 on the vehicle body frame side of the rear suspension 1.
The screw 73 can be screwed from one end of the cylindrical shaft 71, and the flange 74 is welded and fixed to the other end of the cylindrical shaft 71. The second mounting portion 7 is formed by inserting the cylindrical shaft 71 into the vehicle body frame side mounting member 11 of the rear suspension 1 and tightening and fixing it with the washer 72, the screw 73, and the flange 74. The mounting member 11 is connected. The screw 73 is provided with a spherical head portion 731 and a wrench groove 732 in order to prevent an injury caused by touching.

The plate 8 has a short plate shape,
The first attachment portion 6 is welded and fixed to one end, and a first insertion hole 81 that communicates with the first attachment portion 6 is opened, and the other end is a second shaft through which the cylindrical shaft 71 of the second attachment portion 7 can be inserted. The insertion hole 82 is opened. The plate 8 holds a constant space between the first mounting portion 6 and the second mounting portion 7. The corner surface 83 of the plate 8 has a curved shape in order to prevent an injury caused by touching.

In this embodiment, the arm 9 is of a flat plate shape integrally bent from the flange 74 of the second mounting portion 7 into an L-shape, and is opposite to the cylindrical shaft 71 of the second mounting portion 7. Extending in the direction. The arm 9 is brought into contact with the vehicle body frame 4 by the connection of the first attachment portion 6, the rear suspension attachment member 5 and the second attachment portion 7, and the vehicle body frame side attachment member 11 of the rear suspension 1.

According to this embodiment, the entire structure is extremely simple because it does not include a specially complicated portion. Therefore, it can be manufactured inexpensively and easily.

In the mounting work of this embodiment, first,
Use the jack, stand, etc. to lift the rear side.

Then, the washer 52 and the nut 53 of the rear suspension mounting member 5 are removed from the threaded rod 51, and the body frame side mounting member 11 of the rear suspension 1 is pulled out from the threaded rod 51. At this time, the washer 52 and the nut 53 of the removed rear suspension mounting member 5 should not be lost.

Next, the threaded rod 51 of the rear suspension mounting member 5 is fitted into the first mounting portion 6 and the first insertion hole 81 of the plate 8, and the threaded rod 51 is washer 52,
Temporarily tighten the nut 53. At this time, the first mounting portion 6 is positioned on the inner side (vehicle body frame 4 side) and the rear side.

On the other hand, the cylindrical shaft 71 of the second mounting portion 7 is inserted into the body frame side mounting member 11 of the rear suspension 1 pulled out from the threaded rod 51 of the rear suspension mounting member 5. The cylindrical shaft 71 of the second mounting portion 7 thus inserted is further inserted from the inside into the second insertion hole 82 of the plate 8, and the washer 72 and the screw 73 of the second mounting portion 7 are temporarily tightened from the outside. .

Such work is performed on both sides of the rear.

After that, jacks, stands, etc. are removed,
Gently ground the rear side.

When the rear side is grounded, the second mounting portion 7, the plate 8 and the arm 9 rotate around the threaded rod 51 and the first mounting portion 7 of the rear suspension mounting member 5. This rotation is stopped by the contact of the arm 9 with the vehicle body frame 4.

In this state, the washer 5 of the rear suspension mounting member 5, which has been temporarily tightened, is corrected so that the contact posture of the arm 9 with the vehicle body frame 4 becomes accurate.
2, nut 53, washer 72 of second mounting portion 7, screw 7
3 and 3 are finally tightened, and the work is completed.

Therefore, the mounting work of this embodiment is performed by drilling,
Since no work such as welding is required and the work involves fitting, inserting, and tightening, even an unskilled person can easily perform the operation.

By the above-described mounting work, as shown in FIG. 2, the support point of the rear suspension 1 on the vehicle body frame 4 side moves from the rear suspension mounting member 5 to the second mounting portion 7. The movement amount of the support point is set by the distance between the first mounting portion 6 and the second mounting portion 7, and the original disposition line L of the rear suspension 1 is a new disposition line further inclined to the front side. The angle θ becomes L ′, and the angle θ decreases. In addition, depending on the vehicle type, the body frame 4
Although the inclination angle, position, etc. are different, it is possible to cope with the above-mentioned magnitude of the turning amount, and therefore it is versatile for different vehicle types.

In this mounted state, the rear suspension 1
Since the rear suspension mounting member 5 and the arm 9 are supported by the vehicle body arm 4 at two points, the mounting strength is increased and the mounting portions do not unexpectedly relax or come off. Further, as shown in FIG. 3, the rear suspension 1
Is attached between the body frame 4 and the plate 8, so that the mounting strength is further increased.

As a result, the rear suspension 1 can effectively function even if there is only one passenger. In addition, when the first mounting portion 6 is provided with the bearing 10 and the whole is in a free state, even if the ground contact pressure of the rear tire suddenly changes due to cornering or the like, the skid of the vehicle body can be prevented.

FIG. 4 shows a second embodiment of the rear suspension fitting for a motorcycle according to the present invention.

In this embodiment, the cylindrical shaft 71 of the second mounting portion 7 in the first embodiment described above is welded and fixed to the plate 8 and the arm 9 is formed into a columnar shape.
It is welded and fixed to the plate 8 between the mounting portions 7. In addition,
In this embodiment, the washer 72 of the second mounting portion 7 and the screw 7
3 will be tightened from the inside, and the washer 72 will substitute the flange 74.

According to this embodiment, the integration as a whole is promoted and the handleability is improved. Further, since the arm 9 has a columnar shape, it is not necessary to correct the contact posture with the vehicle body frame 4 one by one.

FIG. 5 shows a third embodiment of the rear suspension fitting for a motorcycle according to the present invention.

In this embodiment, the cylindrical shaft 71 of the first mounting portion 6 and the second mounting portion 7 in the second embodiment described above is used.
Are projected to the outside of the plate 8.

According to this embodiment, the rear suspension 1 can be supported away from the vehicle body frame 4 when the side cover becomes an obstacle.

In addition to the embodiment shown in the above, it is possible to use an embodiment in which the design of each part is changed in accordance with the structure of the body frame 4 mounting member 11 of the vehicle body frame 4 and the rear suspension 1. For example, although not shown, the arm 9 may have a flat plate shape that is linearly formed in an integral T shape from the flange 74 of the second mounting portion 7. Alternatively, the arm 9 may be formed in a round bar shape continuous with the second mounting portion 7, and the flange 74 may be formed in a round brim shape.

[0041]

As described above, the rear suspension mounting member for a motorcycle according to the present invention has no specially complicated portion, which is common to each claim, so that the structure is simple. Further, due to this effect, there is an effect that it can be manufactured inexpensively and easily.

Further, in common with each claim, it is possible to deal with vehicle body frames having different specifications depending on the amount of rotation of the plate or the like, so that there is an effect of being versatile for various vehicle types.

Further, since it is common to each claim, since work such as drilling and welding is not required for the mounting work, there is an effect that even an unskilled person can easily carry out the work.

Furthermore, since only the first aspect has a degree of freedom in the mounting process of the second mounting portion, there is an effect that the second mounting portion can be mounted quickly.

Furthermore, since only the second aspect can correct the contact posture of the arm with respect to the vehicle body frame, there is an effect that the mounting strength can be increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a rear suspension attachment for a motorcycle according to the present invention.

FIG. 2 is a front view of the mounted state of FIG.

FIG. 3 is a partially cutaway view in the direction of arrow A in FIG.

FIG. 4 is a perspective view showing a second embodiment of a rear suspension attachment for a motorcycle according to the present invention.

FIG. 5 is a perspective view showing a third embodiment of a rear suspension mount for a motorcycle according to the present invention.

FIG. 6 is a side view of the motorcycle for showing a mounting state of a general rear suspension.

[Explanation of symbols]

1 rear suspension 11 Body frame side mounting member 4 body frame 5 Rear suspension mounting member 6 First mounting part 7 Second mounting part 8 plates 9 arms

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B62K 25/04

Claims (2)

(57) [Claims] 1. A first mounting portion connected to a rear suspension mounting member fixed to a vehicle body frame, a second mounting portion inserted and connected to a vehicle body frame side mounting member of the rear suspension, and a first mounting portion. A rear suspension mount for a motorcycle, comprising: a plate that holds a constant interval between the second mounting parts; and an arm that is fixed to the second mounting part and that projects from the plate and contacts the vehicle body frame .
Features that 2 mounting parts can be attached to and detached from the plate
Rear suspension mount for motorcycles . 2. The rear suspension mount for a motorcycle according to claim 1 , wherein the arm is adjustable in angle with respect to the plate.