JPH029995B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle height adjustment device for a motorcycle, in which the vehicle height adjustment device is prevented from operating when the center stand or side stand is upright, thereby preventing erroneous adjustment. This is what I did.

Vehicle height adjustment devices for motorcycles use a rear suspension unit that uses an air spring and is filled with fluid (generally air). There are some that allow you to change the vehicle height. This device uses a manual switch that is operated to start vehicle height adjustment and an auto-leveling sensor. When the manual switch is turned on when the vehicle height is high, fluid (hereinafter referred to as air) inside the rear ) into the atmosphere, shortening the overall length of the rear-action unit and thereby lowering the vehicle height.

An auto-leveling sensor detects that the vehicle height has fallen, and when the vehicle height has fallen to a predetermined value, air exhaust stops. By the way, in the case of a motorcycle, a center stand must be used to stop the motorcycle safely. When the center stand is raised, the rear wheels generally move away from the ground, so the rear action unit is extended to its maximum length. Therefore, the auto-leveling sensor determines that the vehicle height is too high in this state, and does not issue a command to stop air exhaust. Therefore, if the manual switch is turned on in this state, the air will be exhausted permanently, which may cause damage to the equipment in the air exhaust system, and the vehicle height will also be incorrectly adjusted. On the other hand, when using the side stand,
Since the side stand bears part of the load (spring load), correct adjustment will not be made.

The present invention has been made to solve these problems. For this reason, the present invention provides a manual switch that starts vehicle height adjustment, an auto-leveling sensor located close to the rear action unit, and a stand switch that detects whether the center stand or side stand of the vehicle body is in the retracted state. A control unit that receives the output signal of the auto-leveling sensor and sends or removes fluid from the rear suspension unit only when the sensor stand or side stand is in the retracted state. The configuration includes the following.

With this configuration, by operating the manual switch, the vehicle height can be maintained at a constant height regardless of whether the vehicle is occupied or empty, except when the center stand or side stand is up. will be possible.

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 1. Reference numeral 1 denotes a rear action unit that supports a rear wheel (not shown) of a motorcycle, and two rear action units are provided in parallel to support the rear wheel from both sides. It is something that exists. This rear action unit 1 has an inner tube 3 fitted into an outer tube 2, a hydraulic cylinder mechanism 4 and a spring 5 are provided inside, and air is supplied and removed by a valve 6. Therefore, the overall length can be changed. The total dimensions of this rear-action unit 1 are determined by a leveling sensor 7 provided close to the rear-action unit 1.
It's getting detected all the time.

A pipe 6 for supplying and discharging air to and from the reaction unit 1 is connected to the discharge side of a pump 10 of a compressor unit 9 via a solenoid control valve 8. 11 is a motor for driving the pump 10, 12 is a dryer that heats and dehumidifies intake air, 13 is a pressure gauge, and 14 is a safety valve accumulator. The two solenoid control valves 8 are used to switch whether the reaction unit 1 is connected to the pump 10 or to the atmosphere opening 15. The portion described above, that is, the portion indicated by the bold line in the figure, is an air circulation circuit.

Next, to explain the control circuit shown with thin lines, 16
is a manual switch that is operated and turned on by the passenger when adjusting the vehicle height. 1
7 is a stand switch. These auto-leveling switch 16 and stand switch 17 are connected in series to a control circuit of a control unit 18. The input side of the control unit 18 is connected to the leveling sensor 7, and the output side is connected to the solenoid control valve 8.
It is connected to the. 19 is a battery as a power source, and 20 is a pressure switch.

The stand switch 17 is the center stand 2
1 (see Fig. 2) is turned off when the motor vehicle stands up (when the motorcycle is surely stopped).
FIG. 2 shows an example of this, in which a part of the body frame 22 is connected to an intermediate pipe 24 of the center stand 21 which is pivotally connected to the body frame 22 by a shaft 23.
A stand switch 17 is provided and rotatably supported by a shaft 25, and an actuator 26 is pulled by a spring 27. 28 is a return spring that pulls the center stand 21 in the storage direction. The stand switch 17 installed in this manner is used so as to be turned off when the center stand 21 is placed in the upright position.

What is shown in FIG. 3 is another mounting structure for the stand switch 17. In this case, a stopper plate 29 is provided on the center stand 21, and when the center stand 21 is in the upright state, the stopper plate 29 activates the actuator 26 of the stand switch 17 attached to the vehicle body frame 22.
Press to turn it off.
Both of these items are installed on the center stand 21
When the stand switch 17 is turned off, the manual switch 16 is turned off.
Even if the control unit 18 is turned on, the control unit 18 will not operate and therefore the vehicle height will not be adjusted. When the center stand 21 is placed in the retracted state (at this time, the rear wheels are in contact with the ground), the vehicle height can be adjusted.

In the embodiment described above, the stand switch 17 is connected in series with the manual switch 16, but the present invention is not limited to this.
FIG. 4 shows another embodiment of the present invention, in which a stand switch 17 is separated from the manual switch 16 and is connected between a control unit 18 and a solenoid control valve 8 on the air removal side. Even if this is done, the same effect as described above,
effect can be obtained.

FIG. 5 shows still another embodiment of the present invention, in which the stand switch 17 is operated in relation to the state of the side stand 30. In this case, the pin 31 provided in the middle part of the side stand 30 and the side stand 30
A return spring 28 is placed between a pin 34 provided on a bracket 33 whose upper end is pivotally connected by a shaft 32.
is multiplied. And this return spring 2
8 and the actuator 26 of the stand switch 17 are connected by a spring 35. In this embodiment, as shown in FIG. 6, the stand switch 17 is switched depending on the displacement x of the upper end position of the return spring 28 due to the difference in the position of the side stand 30.

Since the present invention is configured as described above, it has the following effects.

Since the vehicle height is not adjusted when the center stand or side stand is in the upright position, no damage is caused to equipment such as the solenoid control valve.

Since the load of the occupant applied to the suspension remains unchanged during driving, it is only necessary to adjust it once during steady (constant speed) driving. In addition, the manual switch allows you to freely select and make adjustments at times other than disturbances, such as during acceleration/deceleration, cornering, and jumps, so adjustments can be made quickly and with good response, and the width of the dead zone is narrow. It is possible to improve accuracy.
Since vehicle height adjustment is started using a manual switch, it is completely unaffected by changes in the state of the rear action unit due to sudden acceleration or deceleration. Furthermore, the internal pressure of the reaction unit will be adjusted correctly.
Eliminates misadjustments.

Vehicle height adjustment is not performed when the center stand or side stand is in the upright position, but starts immediately when the center stand or side stand is stowed, and the vehicle height is also adjusted before getting into the vehicle. Especially when adjusting the vehicle height, the vehicle height is lowered before the driver straddles the seat, making it easier to sit on the seat.

[Brief explanation of drawings]

FIG. 1 is a system diagram of one embodiment of the present invention, FIG. 2 is a perspective view of an example of mounting a stand switch, FIG. 3 is a perspective view of another example of mounting a stand switch, and FIG. 4 is a diagram of another example of mounting a stand switch. FIG. 5 is a side view of still another embodiment of the present invention, and FIG. 6 is an explanatory diagram for explaining the operation of the device shown in FIG. 1...Reaction unit, 7...Auto leveling sensor, 8...Solenoid control valve, 9...Compressor unit, 15...
...Atmospheric release port, 16...Manual switch, 1
7...Stand switch, 18...Control unit, 21...Center stand, 22...
Vehicle body frame, 26... Actuator, 30...
...side stand.

Claims (1)

[Claims] 1 Using a reaction unit filled with fluid, feeding the fluid into the reaction unit,
A motorcycle whose vehicle height is changed by displacement is provided with a manual switch for starting vehicle height adjustment and an auto-leveling sensor located close to the rear action unit, and a center stand or a A stand switch is provided to detect that the side stand is in the retracted state, and according to a command from the manual switch, the stand switch receives the output signal of the auto-leveling sensor only when the center stand or the side stand is in the retracted state. A vehicle height adjustment device for a motorcycle, characterized in that a control unit for supplying and discharging fluid to the rear suspension unit is provided.