JPH0356144Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a stand for supporting and parking the body of a motorcycle, and more specifically to a power stand that includes a power unit.

<Prior Art> Motorcycles are generally equipped with stands that support the body of the motorcycle when it is stopped, similar to bicycles.

Such stands include a side stand type that supports the motorcycle while it is slightly tilted to the side like a support rod, and a center stand that uses a pair of left and right stands to keep the motorcycle upright and support the rear wheel with the rear wheel floating. Two types are commonly used. (New Automotive Engineering Handbook
(Refer to “Part 8” published by the Society of Automotive Engineers of Japan, etc.).

To explain the side stand type in more detail, this type of stand is comprised of a rod-shaped member that is mounted between the front and rear wheels and has one end rotatably supported on the lower side of the engine. This rod-like member is arranged approximately along the longitudinal direction of the vehicle body, and when supporting the vehicle body, the driver rotates it with his or her foot or the like from the stowed state so that its tip is directed diagonally downward, and the vehicle body is held on the stand. By tilting the rod-shaped member toward the direction toward which it is directed, the tip of the rod-shaped member is brought into contact with the ground and supports the vehicle body. That is, this side stand type supports the vehicle body while the front and rear wheels remain in contact with the ground, and has a simple structure that is used for temporary parking.

Furthermore, the center stand type is installed in the same location as the side stand type so as to be rotatable around the left and right direction of the vehicle body, and has two rod-shaped rods that rotate together around this rotation axis. The rear wheels are lifted by placing the tips of the members (stands) on the ground on each side of the vehicle body, and the vehicle body is supported in an upright state by grounding at three points: the front wheels and two stands. This center stand type can maintain a stable stationary state, making it suitable for long-term parking or storage.

<Problems to be solved by the invention> By the way, according to conventional motorcycle stands, for example, in the case of the above-mentioned side stand type, the vehicle body is supported by tilting, so the ground on which the vehicle is stopped is If the stand is tilted in the opposite direction, the stand may approach an upright position and the support may become unstable.Also, if the ground the stand touches is soft,
In the worst case scenario, the stand may sink into the ground and the vehicle may topple over.

On the other hand, in the case of the center stand type, the vehicle is stopped with the vehicle upright, so it is more stable than the side stand type even when the ground is soft or sloped. (If the ground is sloped, support the vehicle so that it is perpendicular to the slope)
Therefore, instability is inevitable depending on the direction of inclination of the ground. Furthermore, with the center stand type, it is necessary to lift the rear wheel and place the stand on the ground, so it is impossible to operate it while riding, and it requires more physical strength to hang the stand than with the side stand type. There is also the problem.

In addition, with any of the above types of stands, it is common for the driver to get on and off the vehicle with the stand up (not supporting the vehicle body), so if the driver does not keep the vehicle body vertical, the driver may It was necessary to support the weight, which sometimes made the riding position unstable. In particular, the center stand type is susceptible to the above-mentioned problems because it is impossible to operate the vehicle while riding in the riding position.

This invention was developed to solve the above-mentioned problems with conventional stands, and is capable of stably supporting a motorcycle vertically even on slopes, and without relying on human power even when the rider is riding. An object of the present invention is to provide a power stand for a motorcycle that can be operated by a power device.

<Means for solving the problem> Therefore, the present invention is provided with a stand shaft that moves in the ground contact direction by the operation of a fluid cylinder with the axial direction being the vertical direction of the motorcycle body, and the stand shaft is supported on the vehicle body side. The standshaft is configured to be selectively prevented from moving in the anti-grounding direction by engaging with the stopper, and the standshaft is provided with grounding portions in contact with the ground on the left and right sides of the swing axis at the lower end of the stand shaft. A swinging grounding member is swingably supported with a swing axis in the longitudinal direction of the vehicle body that substantially intersects with the axis of the standshaft, and the swinging grounding member swings as the standshaft moves in the grounding direction. By engagement of the stopper, the ground contact portion is fixed to the stand shaft in a state in which it is in contact with the ground so as not to be able to swing.

<Operation> According to the motorcycle power stand configured as described above, when the stand shaft is moved in the grounding direction by the operation of the fluid cylinder, the swinging grounding member supported at the lower end of the standshaft moves as follows:
The left and right grounding parts swing so that they are in contact with the ground, and further, as the standshaft moves in the direction of ground contact, the swinging stopper fixes the swinging grounding member to the standshaft so that it cannot swing. Ru.

That is, before being fixed by the swing stopper, the swinging grounding member swings to accommodate the inclination of the ground plane, but eventually the swinging grounding member is fixed to the stand shaft. , the motorcycle is supported by a standshaft and a swinging ground member.

Here, the stand shaft is prevented from moving in the direction opposite to the ground by engaging with a stopper supported on the vehicle body side, and the state of supporting the motorcycle is maintained by the engagement of the stopper.

<Example> An example of the present invention will be described below based on FIGS. 1 to 4.

FIGS. 1 and 2 show an embodiment of the power stand according to the present invention, and show a state in which the power stand does not support a motorcycle body.

In the figure, a piston-shaped hydraulic cylinder (return spring 1b
Appendix) 1 is configured such that hydraulic oil stored in type 4 is supplied into its cylinder by an oil pump 3 driven by an electric motor 2 powered by a battery mounted on the motorcycle. Ru.

The piston rod of the hydraulic cylinder 1 is attached to a shaft 5 (stand shaft) that constitutes a stand.
A long hole 6 is formed at the lower end of the shaft 5 in the axial direction of the shaft 5 with the longitudinal direction of the motorcycle as an axis (see Fig. 4). The swing shaft 9 of the provided swing grounding member 8 is inserted. That is, the swing shaft 9 is supported within the elongated hole 6 so as to intersect the shaft 5 and the shaft along the longitudinal direction of the vehicle body.

The swinging grounding member 8 includes an arm portion 10 extending in an arcuate manner on both sides around a swinging axis 9, and a grounding portion 7 provided on the same plane at each end of the arm portion 10.
and the arm portion 10 has a swing shaft 9.
A gear 11 for fixing the swinging ground member 8 is coaxially fixed to the other end of the swing shaft 9 .

Here, the length of the swing shaft 9 is formed to be slightly larger than the thickness of the lower end portion of the shaft 5 where the elongated hole 6 is formed (distance between both openings of the elongated hole 6). Therefore, the gear 11 and the arm portion 10 are installed so as to sandwich the shaft 5 therebetween. Therefore, the swinging grounding member 8 is swingable around the swinging shaft 9 and is supported so as to be movable in the axial direction of the shaft 5 within the opening range of the elongated hole 6 .

In addition, when the swing shaft 9 of the swing grounding member 8 is located near the upper end of the elongated hole 6, an internal gear-shaped stopper is engaged with a gear 11 that moves up and down together with the swinging grounding member 8. A (swing stopper) 12 is fixed to the shaft 5. Therefore, when the swing shaft 9 moves upward in the elongated hole 6 and the gear 11 and the stopper 12 come into engagement, the swing shaft 9 (swing grounding member 8) is fixed so that it cannot swing. become.

On the other hand, on the upper outer circumferential wall of the shaft 5, there are sawtooth-shaped (upwards teeth) racks 1 arranged in a row in the axial direction of the shaft 5.
3, and a stopper 14 rotatably supported on the body side of the motorcycle engages with this rack 13, thereby causing the shaft 5 to move upward, that is, in the direction opposite to the ground contact direction. be prevented. The stopper 14 is given a counterclockwise rotational force in the figure by a spring 15 whose one end is fixed to the vehicle body side, and when the shaft 5 moves downward, the stopper 14 rotates against the rotational urging force of the spring 15 in the figure. to allow the shaft 5 to move downward over the peak of the rack 13, but the stopper 1
Even if the shaft 5 attempts to move upward in a state where the shaft 4 is engaged with the rack 13, the stopper 14 does not rotate, so that upward movement of the shaft is prohibited.

When attempting to move the shaft 5 upward, the stopper 14 is rotated clockwise in the figure by pulling the wire 16 in the direction of the arrow in the figure.
The engagement between the stopper 14 and the rack 13 is released. Then, the shaft 5 is moved upward by the tension of the return spring 1b provided in the oil cylinder 1.
The tip of this wire 16 is extended to a place that the driver can easily reach, such as the handlebar of the motorcycle or the bottom of the tank, so that it can be easily pulled by operating a lever or the like.
The driver can selectively release the fixation of the shaft 5 by the stopper 14.

According to the power stand having such a configuration, when the driver intends to support the motorcycle with the stand, the electric motor 2 is operated by, for example, a push switch provided on the handlebar, and the motor 2 is driven by the electric motor 2. oil pump 3
Hydraulic oil is fed into the hydraulic cylinder 1 by. Then, due to the pressure of this hydraulic oil, the hydraulic cylinder 1
piston 1a is pushed down, and this piston 1
The shaft 5, which is integral with a, is lowered.

When the shaft 5 descends and the grounding portion 7 of the swinging grounding member 8, which is swingably supported at the lower end thereof, touches the ground, the swinging grounding member 8 is pushed up and its swinging shaft 9 is inserted into the elongated hole 6. The gear 11 and the stopper 12 begin to approach each other as the gear moves from the lower end toward the upper end. When the ground is not perpendicular to the axial direction of the shaft 5, the swinging grounding member 8 moves as the shaft 5 descends with one of the grounding parts 7 in contact with the ground.
The gear 11 and the stopper 12 begin to approach each other after the other grounding part 7 swings and the other grounding part 7 also contacts the ground, that is, after the plane formed by the two grounding parts 7 becomes parallel to the ground (Fig. 3). reference).

When the swing shaft 9 moves to near the upper end of the elongated hole 6,
As shown in FIG. 3, at this position, the gear 11 and the stopper 12 are engaged, and the swinging grounding member 8 is fixed to the shaft 5 so as not to swing. When the swinging grounding member 8 is fixed to the shaft 5 in this way, the reaction force from the ground is transmitted to the hydraulic cylinder 1 via the grounding part 7, and the shaft is balanced with the hydraulic pressure of the hydraulic oil. 5 is stopped.
At this lowering limit position of the shaft 5, the stopper 14
is engaged with the rack 13, and the upward movement of the shaft 5 is mechanically prohibited, and as shown in FIG. , 22 with 4 points. This grounding point draws a diamond shape, and the shaft 5 is installed with the vertical direction of the vehicle body passing near the center of gravity as an axis, so if the shaft 5 is lowered with the vehicle body vertical, the perpendicular line from the center of gravity of the vehicle body will be This grounding point passes through the center of the diamond shape, allowing for stable support with good weight balance.

In this way, in the power stand of this embodiment,
Since the lowering of the stand is controlled using the electric motor 2 as a power source, the driver can support the motorcycle with a simple operation. Also,
With conventional center stand types, the rear wheel had to be lifted manually, making it impossible to hang the stand while riding.
According to the power stand shown in this embodiment, since the stand can be hung while the rider is in the riding position, the rider can get off the vehicle after putting the stand on and bringing the vehicle into a stationary state, and can get off the vehicle stably without taking an unreasonable position. Furthermore, since it can be operated while riding, if you hang the stand while waiting at a traffic light,
The driver can maintain a stopped state without having to support the vehicle with his or her feet, reducing the burden on the driver when waiting at traffic lights.

Also, if you keep the body vertical when hanging the stand (motorcycles are generally two-wheeled vehicles, it is easy to keep the body vertical).
Even if the ground is sloped, the swinging ground member 8 swings along the slope of the ground and is fixed, so that the vehicle body can be supported vertically. Therefore, even when the ground is soft, the vehicle body can be supported vertically at four points, making it possible to obtain a stable stationary state.

Incidentally, as shown by the dotted line in FIG. 2, the shaft 5 is made to be bendable at its intermediate portion (however, a simple locking mechanism is provided), and after releasing the fixation of the shaft 5 by pulling the wire 16, The shaft 5 may be bent, and in this way, the stroke of the shaft 5 by the hydraulic cylinder 1 can be shortened. Furthermore, in order to prevent the swinging grounding member 8 from swinging while the motorcycle is running, a certain amount of load may be applied to the swinging grounding member 8 using a spring or the like.

<Effects of the Invention> As explained above, according to the power stand of the present invention, it is possible to vertically support the motorcycle even on sloping ground, and it is possible to maintain a stable stationary state. In addition, since it is operated by a power device, it is easy to operate and can be operated while riding the vehicle, making it easy to operate the stand and making it suitable for use when getting off the train or while waiting at traffic lights. This has the effect of reducing the burden on the driver.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Fig. 2 is a view taken in the direction of arrow A in Fig. 1, Fig. 3 is a partial plan view showing the grounding state of the stand in the above embodiment, and Fig. 4 is a plan view showing an example of a motorcycle to which the above embodiment is applied. It is a diagram. 1...Hydraulic cylinder, 2...Electric motor, 3...
... Oil pump, 5 ... Shaft, 7 ... Grounding part, 8 ... Swinging grounding member, 9 ... Swinging shaft, 11 ...
...gear, 12, 14...stopper, 13...easy.

Claims (1)

[Claims for Utility Model Registration] A stand shaft is provided that moves in the direction of contact with the ground by the operation of a fluid cylinder, with the axial direction being the vertical direction of the motorcycle body, and the stand shaft engages with a stopper supported on the vehicle body side. The stand shaft is configured to selectively prevent its movement in the anti-grounding direction, and a swinging grounding member is provided at the lower end of the standshaft with grounding portions that touch the ground on the left and right sides of the swinging shaft. The vehicle body is swingably supported with the longitudinal direction of the vehicle body substantially intersecting the axis of the shaft as a swing axis, and the swing ground member is engaged with the swing stopper as the stand shaft moves in the ground contact direction. A power stand for a motorcycle, characterized in that the power stand for a motorcycle is configured to be fixed to the stand shaft so as not to swing when the ground contacting part is in contact with the ground.