JPS5837733Y2 - Motorcycle side stand support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a side stand support device for a motorcycle.

= Generally, the side stand of a motorcycle has an additional elasticity of a return spring so that the side stand can be selectively held in a retracted position and a protruding upright position.

Therefore, not only when the side stand is erected and its tip is placed on the ground and a load is applied to the vehicle body, but also when the body posture is corrected and the tip of the side stand is removed from the ground, the side stand will not release the above-mentioned return spring. Due to its elasticity, it maintains its standing posture while in use.

However, if the conventional side stand support device is used and the motorcycle is inadvertently pushed forward while the motorcycle is parked facing downwards on a downhill slope, the side stand will receive a moment in the retracting direction due to the reaction force from the ground, and the side stand will not be able to return. Since it rotates in the retracting direction against the elasticity of the spring, the vehicle body falls over, causing damage to various parts.

If the side stand automatically retracts due to rider movement or external force while the rider is looking at a map or performing other tasks on a stopped vehicle, there is a risk of falling, and special precautions should be taken. It also becomes difficult to use because it requires attention.

In order to prevent the side stand from rotating toward the storage side when the side stand is stopped, a long hole is provided in the side stand bracket.When the vehicle body load is applied to the side stand, the relative displacement between the side stand and the long hole is used to raise the side stand. It may be possible to lock it, but in that case the structure would be complicated and the operation would likely become unstable due to "backlash" in the elongated hole.

This invention prevents the side stand from automatically retracting even if pushed from behind while the car is parked facing downward on a downhill slope, thereby preventing the car from easily tipping over and damaging the car body, as well as allowing the side stand to stand upright. The side stand will not automatically retract even when the vehicle body is raised from the side stand position with the vehicle body loaded and the tip of the side stand is removed from the ground, and even if you forget to retract the side stand while driving. This has been improved so that it can be easily retracted if the tip of the side flap lightly touches the ground.

Another purpose of the present invention is to prevent the side stand from wobbling while the vehicle is stopped.

Another purpose of the present invention is to simplify the structure and facilitate machining of the parts.

The present invention will be explained with reference to the drawings as follows.

In FIG. 1 showing the perspective left side of the side stand support device, a round pipe frame 1 extends in the front-rear direction (left-right direction in FIG. Brackets 3 are welded in parallel.

4 is a fixed support shaft in the shape of a bolt, which is attached to brackets 2 and 3.
The frame 1 is fitted into a hole and is fixed parallel to the frame 1 with a nut 5.

The movable bracket 6 has a boss portion 6b that is connected to the brackets 2 and 3.
The movable bracket 6 is supported on the fixed support shaft 4 between the two, and the forward projecting portion 6a of the movable bracket 6 fits into the diagonally downwardly opened notch 7 (FIG. 3) of the front bracket 2, and the lower stopper of the notch 7 Surface 7b and upper stopper surface? a (FIGS. 2 and 3) restricts the range of rotation of the movable bracket 6 about the fixed support shaft 4.

The width of the notch 7 is slightly larger than the thickness of the bracket overhang 6a, and the stopper surfaces 7a and 7b are slightly tapered toward the opening of the notch 7, so that when the movable bracket 6 rotates, the movable bracket The upper and lower surfaces of the projecting portion 6a are in close contact with the upper stopper surface 7a or the lower stopper surface 7b.

The side stand 8 is integrally equipped with a U-shaped boss 9 at the base end,
A U-shaped boss 9 sandwiches the movable bracket 6 and is attached to the movable bracket 6 via a movable support shaft 10 that is perpendicular to the fixed support shaft 4.

Reference numeral 11 denotes a stopper surface provided on the movable bracket 6, with which the U-shaped boss 9 comes into pressure contact when the side stand 8 is erected as shown in FIG.

The upper part of the U-shaped boss 9 is integrally equipped with a pawl 13, while the rear bracket 3 is an inclined cam that engages with the pawl 13 only when the vehicle body load is applied to the standing side stand 8 (Figs. 1 and 2). It has a surface 14.

The inclined cam surface 14 is formed on the rear side of the wedge-shaped protrusion 15, is inclined with respect to a plane orthogonal to the fixed support shaft 4, and occupies a plane that generally passes through the center line of the movable support shaft 10 when viewed in FIG. ing.

The pawl 13 has a shape that generally makes surface contact with the inclined cam surface 14.

Even when the side stand 8 is in the upright position, the pawl 13 is disengaged from the inclined cam surface 14 due to the elasticity of the spring 16, which will be described later, while no vehicle load is applied to the side stand 8.
At this time, the pawl 13' is released from the inclined cam surface 14, so the side stand 8
can be flipped up in the storage direction D (FIG. 1) about the moving support shaft 10.

The Te end of the spring 16 is attached to the U fixed to the rear surface of the front bracket 2.
It is hooked on a hook 18 (frame side hook) consisting of a metal fitting 18a, and the other end is hooked on a hook 19 of the side stand 8.

The spring 16 is stretched by a certain amount between the two locking portions 18 and 19, so that the locking portions 18 and 19 are subjected to a tensile force in a direction in which they approach each other.

The position of the frame-side hooking portion 18 of the spring 16 is particularly determined as follows.

That is, when the side stand is upright, the center line of the spring 16 is below the fixed support shaft 4 (FIG. 2), and the movable support shaft 10
occupies the front side (Fig. 1) of the side stand 8 (see arrow D (Fig. 1)).
When retracting in the direction shown in FIG. 1), the latch 18 is located at the lower front side of the vehicle body with respect to the movable spindle 10 so that the center line of the spring 16 passes rearward through the center of the movable spindle 10. occupying a position.

Figures 1 and 2 show a state in which the side stand 8 is erected as described above and the vehicle is stopped with the weight of the vehicle on the side stand 8. At this time, the side stand 8 is shown with the contact surface of the tip facing upward from the ground. Due to the force, the tip of the side stand remains on the ground, and the vehicle body moves to side stand 8.
Tilt to the side, arrow E relative to the fixed support shaft 4 (Fig. 2)
The upper surface of the movable bracket 6 comes into pressure contact with the upper stopper surface 7a of the front bracket 2, and at the same time the pawl 13 engages with the inclined cam surface 14, whereby the side stand 8 is rotated about the movable support shaft 10. The U-shaped boss 9 is brought into close contact with the stopper surface 11 by receiving a moment in the opposite direction.

When the vehicle is stopped, the pawl 13 engages with the inclined cam surface 14, so the side stand 8 cannot turn in the direction of arrow D (FIG. 1). Therefore, while the vehicle is stopped, the vehicle body is pushed forward.
Even when the side stand 8 receives a moment from the ground in the direction of the arrow, the side stand 8 remains upright,
The ground-contacting part of the side stand 8 simply moves to scrape the ground to prevent the vehicle from overturning.

In order to restart the vehicle, correct the posture of the vehicle and place it on the side stand 8.
When the weight of the vehicle body is removed, the elasticity of the spring 16 causes the side stand 8 to rotate to the position shown in FIG.
is retracted to position 13, which is released from the inclined cam surface 14.

However, at that time, the center line of the spring 16 is on the front side of the movable support shaft 10 as shown in FIG.
The U-shaped boss 9 remains in pressure contact with the stopper surface 11 by receiving a moment in the opposite direction from the side stand 8, so that the side stand 8 still remains in the protruding upright position.

When you apply a force in the direction of the arrow, for example with your foot, to the side stand 8, the moment the center line of the spring 16 passes through the center of the moving support shaft 10, the spring 16 applies a moment to the side stand 8 in the retracting direction, and the side stand 8 is automatically stored.

To raise the side stand in order to stop the vehicle again, simply step down on the retracted side stand in the opposite direction.

At that time, after the center line of the spring passes forward through the center line of the movable support shaft 10, the side stand automatically reaches the upright position shown by the two-dot chain line in FIG.

Therefore, if you continue to shift the weight of the vehicle to the side stand, the first
As shown in Fig. 2, the pawl 13 engages with the inclined cam surface 14,
The side stand is locked.

As explained above, according to the present invention, when the vehicle body load is applied to the side stand 8 in the upright state, the movable bracket 6 rotates about the fixed support shaft 4 in the direction of the arrow E, and the claw 13 moves toward the inclined cam surface 14. This prevents the side stand 8 from inadvertently turning in the storage direction indicated by the arrow, so even if the side stand 8 is pushed forward while facing down on a downhill slope, the side stand 8 will remain in the upright position. Not only does it scratch the ground and do not retract automatically, but it also provides braking force and reliably prevents the vehicle from tipping over or creeping.

When a vehicle body load is applied to the side stand 8, the pawl 13 rotates a predetermined amount around the fixed support shaft 4, and this movement causes the claw 13 to engage with the inclined cam surface 14, and the inclined cam surface 14 engages with the fixed support shaft 4. Since the movable bracket 6 collides with the upper stopper surface 7a, the claw 1
3 and the inclined cam surface 14, and the U-shaped boss 9 and the stopper surface 1
1 can be pressed into contact with each other at the same time, no backlash remains in each part, and therefore there is no fear that the side stand 8 will tilt even when pushed while stopped, and movement of the vehicle body can be prevented as much as possible.

In addition, since the inclined cam surface 14 is formed on the rear surface of the wedge-shaped projection 15, when the vehicle body load is applied to the side stand 8, the pawl 13 rotates around the fixed support shaft 4, whereas the inclined cam surface 14 rotates around the fixed support shaft 4. 4, the wedge action increases and the U-shaped boss 9 can be reliably pressed against the stopper surface 11. 14, the wedge-shaped projection 1 at the tip of the rear bracket 3
5, the pawl 13 engages with the inclined cam surface 14 by a wedge action when the side stand 8 is raised and the vehicle load is increased, and the U-shaped boss 9 engages with the stopper surface 11.
Make sure to press it firmly.

Therefore, even if a load is applied to the vehicle body in the longitudinal direction during parking, the attitude of the side stand 8 relative to the vehicle body does not change at all and does not wobble, so there is no risk of the vehicle body moving forward or backward, and the inclined cam surface 14 and stopper Since no excessive impact load is applied to the surface 11, durability can be increased.

In addition, according to the present invention, there is no need to provide long holes in the bracket 2゜3.6, etc., so machining is easy, operation is stable,
There is no fear of rattling.

Furthermore, in this invention, when the side stand is raised, the spring 1
6 occupies the lower side of the fixed support shaft 4 and slightly in front of the movable support shaft 10, and when storing the side stand 8, the center line of the spring 16 passes backward through the center of the movable support shaft 10. Since the position of the frame-side hooking part 18 of the spring is set at the lower front of the moving support shaft 10, the vehicle body can be moved from the state where the side stand 8 is erected and the vehicle body load is applied to the side stand 8 (the state shown by the solid line in Fig. 2). When the side stand 8 is raised to a vertical running position, the side stand 8 is moved to the second position by the elasticity of the spring 16.
The pawl 13 only moves away from the inclined cam surface 14 by rotating to the position 8' in the figure, and the side stand 8 still maintains its upright position (not automatically retracted), so that the rider can rest on the vehicle while the vehicle is stopped. When looking at a map or performing other tasks, even if the tip of the side stand moves away from the ground due to the rider's movement or external force, the side stand will automatically retract and cause a fall. The fear of will disappear.

In addition, when the side stand 8 is raised to reduce the load on the vehicle body, the pawl 13 engages with the inclined cam surface 14, so that the forward kick angle when the side stand is raised (as shown in the perspective left side view shown in Fig. 1) The angle at which the side stand 8 is tilted forward (as it moves downward) can be reduced, so even if you forget to store the side stand while driving, the tip of the side stand 8 will only lightly touch the ground, and the side stand 8 will easily flip up to the stored position. It will be done.

Therefore, even if the vehicle forgets to store the side stand while driving, there is an advantage that safety is ensured.

[Brief explanation of drawings]

Fig. 1 is a perspective left side partial view of the side stand support device according to the present invention (view from the ■ arrow in Fig. 2;
■Front view in the direction of arrows, Figure 3 is a front view of the front bracket in Figure 1, Figure 4 is a rear view of the rear bracket, Figures 4a, 4b, and 4c are the rear side in Figure 4. A drawing of the bracket seen in directions A, B, and C in Figure 4, and Figure 5 is a view of V in Figure 1.
-V sectional view, and FIG. 6 is a rear view of Vl-M in FIG. 1...Frame, 2'...Front bracket, 3...Rear bracket, 4...
Fixed support shaft, 6...Moving bracket, 6a...
...Protruding part, 6b...Boss part, 1...
・Notch, 8...Side stand, 9...
・U-shaped boss, 10...Movement shaft, 11...
...Stopper surface, 13...Claw, 14...
... Inclined cam surface, 16... Spring, 18.19.
...Latching part.

Claims (1)

[Scope of utility model registration request] Brackets 2.3 are protruded from two close front and rear locations of the frame 1, and fixed support shafts 4 extending approximately in the front and rear direction are attached to the front and rear brackets 2, 3, and fixed support shafts between the front and rear brackets are installed. 4 supports the boss portion 6b of the plate-shaped movable bracket 6, and the U of the side stand 8 fitted to the movable bracket 6
A shaped boss 9 is connected to the movable bracket 6 via a movable support shaft 10 perpendicular to the fixed support shaft 4, and a notch 1 is provided in the front bracket 2 that opens diagonally downward and is slightly wider than the thickness of the movable bracket 6. The front projecting portion 6a of the movable bracket 6 is fitted into the notch I, and the movable bracket 6 is provided with a stopper 11 against which the side stand 8 stands up.
A claw 13 is provided at the tip of the upper part of the U-shaped boss 9, and the side stand 8 is provided with a claw 13 to reduce the load of the vehicle body while the side stand 8 is standing.
An inclined cam surface 14 is formed on the rear surface of the wedge-shaped protrusion 15 at the tip of the rear bracket 3, and the claw 13 engages only when the bracket rotates upward. A spring 16 for returning the stand is stretched between the latching portion 19 and the frame-side latching portion 18, and when the side stand is raised, the center line of the spring 16 is below the fixed support shaft 4 and also below the movable support shaft 10. Slightly old front side, side stand 8
The frame side hooking part 18 of the spring is positioned at the lower front of the movable support shaft 10 so that the center line of the spring 16 passes rearward through the center of the movable support shaft 10 when storing. Motorcycle side stand support device.