JPH065982Y2 - Motorcycle side stand - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a motorcycle side stand that can prevent the vehicle from toppling over when it is forgotten to be stowed and can improve running safety.

[Conventional technology]

Motorcycles often start and drive without forgetting to store the side stand.

However, driving with such a side stand not stored,
Especially when the vehicle body is banked on a curve, the side stand and the road surface are likely to come into contact with each other, which may cause a serious accident such as a motorcycle fall.

Further, in order to solve such a problem, the conventional method, for example, FIG.
As shown in (a) and (b), the side stand A bends along the side stand ground contact portion B when parked and is restored by elastic force when the vehicle body is upright, and the lower end P has a ground contact portion. It is proposed to attach a flip-up piece C composed of a rubber block projecting downward from the bottom surface of B and automatically flip up the side stand A without causing a shock when the lower end P comes into contact with the road surface S during traveling. Has been done.

[Problems to be solved by the device]

However, since the flip-up piece C is formed of only a rubber material in the prior art, permanent distortion is likely to occur during long-time parking, parking at low temperature, etc., as shown by the dashed line in FIG. The incomplete restored state Q1 due to the permanent strain causes the lower end position to rise. Therefore, the contact between the flip-up piece C and the road surface S was insufficient during running, and sometimes the side stand A failed to flip up, so that its function could not be sufficiently achieved.

In view of such a situation, the present invention is based on the use of a rubber-like base portion and a spring piece of a metal plate for the flip-up piece.
It is an object of the present invention to provide a motorcycle side stand that enhances the restoring force of the splashed piece and solves the above problems.

[Means for Solving the Problems]

The present invention is directed to a side part of a motorcycle, which is pivotally supported on the side part of the motorcycle to prevent the motorcycle from falling down and is tilted in a downward position. A motorcycle having a flip-up piece projecting downward, the spring-up piece having a long piece-shaped base made of rubber, and a spring piece of a metal plate extending in the longitudinal direction of the base part. It is a side stand.

〔Example〕

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

In the figure, a side stand 1 includes a side stand body 3 pivotally supported on a side portion of a motorcycle 2, and a flip-up piece 5 fixed to the side stand body 3.

The side stand body 3 is pivoted along the vehicle body length direction of the motorcycle 2 on a support plate 10 attached to the side of the frame F of the motorcycle 2 at the upper end of the straight shaft-like leg portion 9 which extends the grounding portion 7 outward at the lower end. It is provided with a U-shaped locking portion 11 that is supported, and is tilted in an angle range of approximately 90 ° to a downward position or a horizontal position facing rearward in the traveling direction of the motorcycle by stopper pieces 12A and 12B protruding from the support plate 10. To do.

Further, the side stand body 3 has a return spring 1 whose one end is attached to the support plate 10 at the hook portion 13 inside the leg portion 9.
The other end of 5 is locked, so that the side stand body 3 is
When the ground contact portion 7 comes into contact with the road surface S at the downward position, the weight of the leaned motorcycle 2 is carried, the leaning of the motorcycle 2 is prevented, and the return spring 15 is biased by the external force directed rearward in the traveling direction to the horizontal position. Can be repelled.

Further, a bracket 16 is provided on the side stand body 3 at the lower end of the rear side surface of the leg portion 9 so as to project therefrom.
6 is a fitting frame portion 17 of a lower opening that surrounds the upper end portion of the flip-up piece 5.
The inner and outer pieces 17B and 17A are provided with small holes 20 and 20 through which the bolt pieces 19 for attaching the flip-up piece 5 are inserted.

As shown in FIG. 3, in this example, the flip-up piece 5 is made up of a long piece-shaped base portion 21 made of a rubber material and having a rectangular cross section, and a metal plate, and is embedded in the base portion 21 along its longitudinal direction. And a spring piece 22, the spring piece 22 having a peripheral edge thereof
1 It is arranged inside from the outside to the inside.

Further, the flip-up piece 5 has a through hole 23 at the upper end thereof which penetrates both the base portion 21 and the spring piece 22, and the upper end portion is fitted into the bracket 16 and the small holes 20, 20, By fixing the bolt piece 19 that is inserted through the hole 23 with a nut, the lower end 5A of the flip-up piece 5 projects downward from the lower surface of the grounding portion 7 and is fixed to the bracket 16 so as not to fall off.

In addition, the flip-up piece 5 has a lower surface 5A inwardly inclined by a slope 5
B, the protruding portion 5C when parking a motorcycle
Is preferably prevented from bending inward, and since the bending angle of the inward bending is an acute angle, rigidity breakage, repeated breakage, etc. at the bending point occur, and the life of the flip-up piece 5 is shortened. Invite.

Here, the flip-up piece 5 is a rear piece 17C of the fitting frame portion 17.
By extending the restraining piece 25 to the rear side, backward bending can be prevented, and an external force acting on the lower end 5 </ b> A in the traveling direction and directed rearward can be accurately transmitted to the side stand body 3 by contact with the road surface during traveling. Further, the receiving piece 2 is attached to the outer piece 17A of the fitting frame portion 17.
By providing 6, the bent portion of the flip-up piece 5 at the time of bending can be pressed and the restoring force can be increased.

Next, as the base 21, natural rubber, styrene-butadiene rubber, polybutadiene rubber, polyisoprene rubber,
Various rubber materials such as butyl rubber can be used as appropriate, and in particular, in consideration of the permanent set during bending and aging resistance, E shown in Table 1
PDM compounded rubber is preferred. Further, the spring piece 222 is the base 2
1 is used for increasing the restoring force, and the length thereof is preferably set to 1/3 or more, preferably 1/2 or more of the base 21, and the material thereof is various spring steel strips. Can be used by The spring piece 22 is a spring piece 5.
It is also effective to prevent backward bending, twisting, etc., and to prevent the deformation and damage of the flip-up piece 5 and prolong its life.

In this way, the motorcycle side stand 1 is
As shown in the figure, during parking, the protruding portion 5C of the flip-up piece 5 is bent outward due to the weight of the vehicle body, and the ground contact portion 7 of the side stand body 3 contacts the road surface S to support the vehicle body.

Further, when the vehicle body is erected at the time of starting, the ground contact portion 7 is separated from the road surface S, and as shown by the solid line in FIG. 2, the flip-up piece 5 can be restored to a substantially straight line shape by the elasticity of the base portion 21 and the spring piece 22. The lower end 5A projects from the lower surface of the grounding portion 7 and faces the road surface S directly.

Therefore, in such a state, that is, when the side stand is in a starting state or running state when the side stand is not stored, the lower end 5A comes into contact with the road surface S due to the inclination of the vehicle body or the unevenness of the road surface, and the friction causes the external force in the backward direction of the traveling direction to cause the grounding portion 7
The side stand body 3 can be automatically flipped up to a horizontal position without causing a collision between the side stand body 3 and the road surface S.

Note that the contact between the flip-up piece 5 and the road surface S causes less impact because the flip-up piece 5 is formed of a rigid body, and there is no risk of the motorcycle falling.

Here, since the spring piece 22 is formed of a metal material, even if residual stress is generated in the base portion 21 during parking for a long time or at a low temperature, the elasticity of the spring piece 22 allows the spring piece 22 to return and the amount of deformation of the spring piece 22 can be reduced. Reduction mitigation can be measured.

Therefore, the automatic splashing mechanism of the side stand can be ensured, and the running safety of the motorcycle can be further enhanced.

FIG. 4 shows another embodiment of the flip-up piece 5.

In this example, the base portion 21 and the spring piece 22 are formed separately,
The spring fart 22 is attached to the bracket 16 along the outer surface of the base 21.
Will be stopped by. The bracket 16 may be formed integrally with the leg portion 9, may be detachably attached, or may be provided on the front side in the traveling direction.

[Example-1] Using the rubber material having the composition shown in Table 1, a flip-up piece shown in Fig. 3 was prototyped according to the specifications shown in Table 2 and deformation of each prototype after being left as shown in Fig. 5 was performed. The results of measuring the quantity X are shown in FIGS. 6 (a) to 6 (c). It should be noted that the above-mentioned leaving is 72 outdoors.
Time, 70 ° C. for 72 hours, and −20 ° C. for 40 hours under three conditions.
Indicates the value in minutes later.

Under all the conditions, the examples of the present application are excellent as products with a small amount of deformation.

In addition, Table 3 shows the physical properties of the rubber material having the composition shown in Table 1.

[Effect of the invention] As mentioned above, the side stand of the motorcycle of the present invention is
Since the spring piece made of a metal plate is arranged on the long piece base made of rubber, the restoring force of the splashed piece can be increased, and after parking under various conditions such as long-time parking and low temperature parking. The amount of deformation of the splashed piece can be reduced. Therefore, the side stand automatic splashing function can be made more reliable than the conventional one, and the safe running of the motorcycle can be improved.

[Brief description of drawings]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a perspective view showing a flip-up piece, and FIG. 4 is a sectional view showing another embodiment of the present invention. 5 (a) and 5 (b) are schematic diagrams showing the prior art, and FIGS. 6 (a) to 6 (c) are diagrams showing the test results of the examples. 2 ... Motorcycle, 3 ... Side stand body, 5 ... Splashing piece, 21 ... Base, 22 ... Spring piece.

Claims (1)

[Scope of utility model registration request] 1. A side stand body which is pivotably supported on a side portion of the motorcycle and prevents the motorcycle from tilting when tilted in a downward position, and an upper end portion fixed to the side stand body and the side stand body lower end together with an upright position of the motorcycle. And a flip-up piece projecting downwardly from the spring, the flip-up piece comprises a long piece-shaped base made of rubber and a spring piece of a metal plate extending in the longitudinal direction of the base,
Moreover, the lower end of the downwardly projecting portion of the base is formed into a slope facing inward of the vehicle body, and the upper end of the flip-up piece has a through hole through which a bolt for fixing the flip-up piece penetrates both the base and the spring piece. A motorcycle side stand characterized by the provision of.