JP2500991Y2 - Rear hawk mounting device for motorcycles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rear hawk mounting device for a motorcycle, which has an improved assembling property.

(Prior Art) In a motorcycle, bosses provided on the left and right of the center lower part of the frame rotatably mount a front end cylinder of a rear hawk, and a cushion unit is connected between the rear hawk and an upper part of the frame. At the rear end of the rear hawk, an axle having a rear wheel rotatably attached is fastened, and the cushion unit is expanded and contracted so that the rear hawk swings and the rear wheel can be cushioned. . To pivotally attach the front end of the rear fork to the left and right bosses of the frame, insert bearings at both ends of the barrel and receive the bearings with the pivot spacer and thrust washer, and also dust will not enter. In this way, dust seals are attached to both ends of the barrel. For example,
See JP-A-56-28989.

(Problems to be solved by the invention) To attach the shaft cylinder at the front end of the rear fork to the left and right bosses of the frame, align the bearings, pivot spacers, thrust washers, and dust seals at both ends of the shaft cylinder. It is necessary to insert the cylinder between the left and right bosses of the frame and attach it through the support shaft, but especially the work of inserting the shaft cylinder between the left and right bosses while supporting the thrust washers and dust seals on both sides of the shaft cylinder. It is difficult to assemble, the dust seal and the thrust washer fall off, and the assembly is not easy, and it takes time and labor.

In view of this point, the present invention fits the outermost dust seals on both ends of the rear fork shaft cylinder to the shaft cylinder, and the dust seal does not fall off even if the dust seal is not supported by hand, thus improving the assemblability. The purpose is to obtain a rear hawk mounting device for a motorcycle.

(Means for Solving the Problems) In order to achieve the above object, a rear hawk mounting device of the present invention has a bowl-shaped dust seal attached to both ends of a front cylinder of a rear hawk to form a cylinder. Align both ends of the boss to the bosses provided on the left and right of the frame, and rotatably attach the shaft through the support shaft.
The inner end of the dust seal is fitted into the groove or the projection so that the dust seal can be prevented from falling off.

(Operation) Bearings, pivot spacers,
Insert the thrust washer and attach it with the dust seal on the outermost side. Since the dust seal has the inner end fitted into the grooves or the projections provided on the outer circumferences of both ends of the shaft cylinder, it can be prevented from falling off even if the hand is removed from the dust seal.
Therefore, by aligning both ends of the shaft cylinder with the left and right bosses of the frame, it is possible to concentrate on the work of passing the support shaft, prevent mistakes in assembling, improve the assemblability, and shorten the assembling time. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention, and FIG. 1 shows the left side. The front ends of the left and right rear forks 1 are welded to the barrel 2. In the barrel 2,
The center spacer 3 is inserted in the center, and the bearings 4 are inserted in both end steps. Then, the pivot spacer 5 is inserted inside the bearing 4, and the inner end is brought into contact with the outer end of the center spacer 3. Then, the thrust washer 6 is superposed on the outer side of the pivot spacer 5, and the dust seal 7 is applied to the outer side thereof. The dust seal 7 has a bowl shape, and a seal lip 8 that comes into contact with the outer circumference of the barrel 2 is provided inside.
Is provided. Grooves 9 are formed in the outer circumference of both ends of the shaft tube 2 in the circumferential direction. On the other hand, an inward flange 10 is provided on the inner end of the dust seal 7 so that the flange 10 fits into the groove 9 and does not fall off. The collar 10 may be formed short on both sides as shown in FIG. 2, or may be long so as to have a slight gap at both ends as shown in FIG. In this case, the dust can be removed at the previous stage of the seal lip 8. In this way, the dust seals 7 are fitted to both ends of the shaft cylinder 2 so as not to fall, and both ends of the shaft cylinder 2 are aligned with the bosses 12 of the frame 11 and fastened through the support shaft 13 so that the shaft cylinder 2 can be rotated. Axle.

4 and 5 show another embodiment of the present invention, and FIG. 4 shows the right side. In this case,
Protrusions 14 are formed by welding on the outer circumferences of both ends of the shaft cylinder 2, and engaging grooves 15 are provided at the inner ends of the dust seals 7 attached to both ends of the shaft cylinder 2, and the engaging grooves 15 are fitted to the protrusions 14, The dust seal 7 is prevented from coming off. Others are shown in FIGS.
It is the same as that shown in the figure, and the same reference numerals are given.

(Effect of the Invention) As described above, since the present invention is configured as described above, the grooves or projections formed on the outer peripheral portions of both ends of the front cylinder of the rear fork are attached to both ends of the cylinder. Since the inner end of the dust seal is fitted, it is possible to prevent the thrust washer and dust seal, which easily fall off, from coming off even if they are not supported by hand. Therefore, when the rear fork shaft cylinder is attached to the frame, both ends of the shaft cylinder can be aligned with the left and right bosses of the frame and the spindle can be put through. Thus, the assemblability can be improved, the assembling can be done in a short time, and the workability at the time of maintenance such as bearing replacement can be improved. or,
By lengthening the brim provided at the inner end of the dust seal, it is possible to remove dust in the previous stage of the seal lip and also improve the sealing effect.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a vertical sectional view of one left side, FIGS. 2 and 3 are perspective views of a dust seal, and FIGS. 4 and 5 are books. FIG. 4 is a vertical sectional view on the right side, FIG. 5 is a perspective view of the dust seal, and FIG. 6 is a perspective view before attaching the rear fork to the frame. 1 ... Rear hawk, 2 ... Shaft cylinder, 7 ... Dust seal, 9
...... Groove, 11 …… Frame, 12 …… Boss, 13 …… Spindle, 14
...... Protrusion.

Claims (1)

(57) [Scope of utility model registration request] Claims: 1. A bowl-shaped dust seal is attached to both ends of a shaft cylinder at the front end of the rear fork, and both ends of the shaft cylinder are fitted to bosses provided on the left and right of the frame, and rotatably mounted through a support shaft. In this case, a groove or a protrusion is formed on the outer circumference of both ends of the shaft cylinder, and the inner end of the dust seal is fitted into the groove or the protrusion to prevent the dust seal from falling off. apparatus.