JPS6038275A - Car height regulator for two-wheeel barrow - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vehicle height adjustment device for a two-wheeled vehicle that can manually and selectively adjust the vehicle height of the front and rear portions of the vehicle body. Regarding a vehicle height adjustment device for a two-wheeled vehicle that prevents switching even if the front and rear changeover switches are operated when the changeover is being performed , one in which the height of either rear part of the vehicle can be adjusted has been proposed. Such a vehicle height adjustment device usually includes a compressor that generates compressed air, and a front fork and a rear cushion that have a gas chamber that changes the vehicle height by changing the internal pressure. In between, the front and rear switching solenoid valves are connected with air pipes, and the switching solenoid valves are operated manually as appropriate to direct high-pressure air supplied from the compressor to either the front fork or the rear cushion gas chamber. A configuration will be adopted in which the fuel will be selectively supplied to raise the vehicle height.

By the way, in such a vehicle height adjustment device, there is a first operation switch for changing the front fork or rear cushion, and a control switch for selecting rupJ and neutral harddownJ for adjusting the vehicle height. 0As a result, if you switch the first operation switch to the front fork side while supplying high-pressure air to the gas chamber of the rear cushion, for example, the This is inconvenient because the pressures that can be applied to the gas chambers of the rear cushion and the front fork are different.

The purpose of the present invention is to prevent the above-mentioned situation from occurring, supply appropriate pressure to each gas chamber of the front fork and rear cushion, and thereby protect the suspension system from the pressure point of view. There is a particular thing.

A feature of the present invention is that the vehicle height adjustment device for two-wheeled vehicles can adjust the vehicle height by selectively and appropriately changing the internal pressure of the gas chambers of the front fork and rear cushion using a manual operation switch. ``up'', ``
The configuration is such that the changeover operation switch for selecting either the front fork or the rear cushion can function effectively only when the operation switch that can select between ``neutral'' and ``dOwn'' is in the ``neutral'' position. There is a particular thing.

An embodiment of the present invention will be described in detail below based on the accompanying drawings.

FIG. 1 shows the configuration of a vehicle height adjustment device according to the present invention, and FIG.
The figure shows the configuration of the control device.

In FIG. 1, the air circuit system will be explained first.

1 is a compressed air generator, which includes a compressor 2 and a dryer 3.
Consists of. 4 is a switching pulp unit, which is composed of two switching solenoid pulps 5 and 6. The switching pulp unit 4 has an air pipe 7 connected to the compressed air generator 1.
under predetermined control, to the air pipe 9 connected to the vehicle height adjustment gas chamber formed in the front forks 8, 8 or to the vehicle height adjustment gas chamber formed in the rear cushion 10.10. It has a function of selectively communicating with the air pipe 11 to be connected. Specifically, when the solenoid pulp 5 opens, the air pipe 7 communicates with the air pipe 9, and the solenoid valve 6 opens.
When the air pipe 7 opens, the air pipe 7 communicates with the air pipe 11. In the figure, 12 and 13 are three-way sockets.

Above front fork 8, 8, rear cushion 10.1
0, this embodiment will be described as a vehicle height adjustment device for a motorcycle, but the gist of the present invention is not limited to a vehicle height adjustment device for a motorcycle.

Then, in the middle of the air pipe 7, that is, the compressor 2
A check valve 14 and a relief solenoid valve 15 for opening to the atmosphere are provided between the switching pulp unit 4 and the switching pulp unit 4.
A pressure sensor 16 that can measure the pressure inside the air pipe 7 is provided. In this embodiment, the check pulp 14, the solenoid pulp 15, and the pressure sensor 16 are configured as a unit.

Next, the electric circuit system will be explained. 17 is a control device. The input side elements of the control device 17 include a vehicle height sensor 18, a voltage abnormality detection sensor 19, a side stand release detection sensor 20, and a main stand release detection sensor 21 as detectors.
, a brake operating state detection sensor 22, and the pressure sensor 16 are provided at appropriate locations on the vehicle body, and as operation means, a return type auto start switch 23, a manual front/rear selection switch 24, and a manual up/down switch are provided. - A neutral/down selection switch 25 is provided. On the other hand, the output side of the control device 17 includes the compressor 2, the solenoid valve 15, and the solenoid pulps 5 and 6 forming the switching pulp unit 4 as controlled objects, and the pressure sensor 16 and the solenoid valve 5 as display elements. .6.15 abnormality warning lamp 26, lamp 27 that flashes only during automatic vehicle height adjustment, front fork 8 and rear cushion 10
A pair of digital displays 28 are provided to separately display the pressure in each gas chamber. In addition, 29 in the figure is a power supply terminal,
30 is a system start switch. The start switch 30 is normally in a closed state, and the entire vehicle height adjustment device can be reset by opening and closing it once as necessary.

FIG. 2 is a block diagram showing a specific electric circuit of the control system. There is a CPU 31 in the center, and around the CPU 31 there are an input interface 32 for sensors, etc., a vehicle height sensor input interface 33, and an analog input interface 34 to exchange signals with various external sensors, operating means, and loads. , A/D converter 35,
Load drive output circuit 36, lamp output circuit 37, pressure data output circuit 38, display data interface 39
etc., and these are incorporated into the control device 17. In the figure, 40 is a display panel on which display elements are arranged.

Next, the operation of the vehicle height adjusting device having the above configuration will be explained.

This operation is based on the control of the CPU 31.

First, the vehicle height must be adjusted if the side stand and main stand are released, the brakes are intact, and the voltage is normal.

When these conditions are satisfied and the ignition key is turned on to start the system, the solenoid pulps 5, 6, 15 and the pressure sensor 16 are first inspected to see if they are normal or abnormal.

That is, the solenoid pulp 15 is opened for about two seconds, for example, to open the air pipe 7 to the atmosphere, and then the pressure inside the air pipe 7 is measured by the pressure sensor 16.

7- If the measured pressure is zero, the state shifts to a state where manual vehicle height adjustment is possible, and if it is not zero, the lamp 26 is turned on to issue a warning and the operation of the entire device is stopped.

Before the above step, the pressure in each gas chamber of the front fork 8 and rear cushion 10 is measured separately by the pressure sensor 16 by selectively opening the solenoid pulp 5.6, and the pressure is displayed on the digital display 28. It is assumed that a step to display the information is included. Such a step can be incorporated as part of the processing flow, or it can be provided as a separate routine with separate interrupt means. Furthermore, for example, an average value is used for the displayed pressure value.

This vehicle height adjustment device can perform manual and automatic vehicle height adjustment, and the auto start switch 23
Unless it is turned on, the operating state is manual mode.

According to manual vehicle height adjustment, the vehicle height at the front and rear of the vehicle body can be arbitrarily changed under certain limits according to the load applied to the vehicle body. That is, in order to adjust the vehicle height at the front of the vehicle body, the switch 24 is set to the front side, thereby opening the solenoid pulp 5 and communicating the air pipes 7 and 9, and on the other hand, adjusting the vehicle height at the rear of the vehicle body. To make the adjustment, the switch 24 is set to the rear side to open the solenoid pulp 6 and allow the air pipe 7 and air pipe 11 to communicate with each other. In each communication state, when the switch 25 is set to rupJ, the compressor 2 is activated and high-pressure air is supplied to each gas chamber via the air pipes 7, 9 (or 11), increasing the pressure in the gas chamber and supplying air to the vehicle. Increase the height.

However, upper limits are set for the pressure in the gas chambers for the front forks 8 and rear cushions 10 (for example, 1. OMy/cl for the front forks and 6.4 My/crl for the rear cushions), and if the pressure is below the upper limits, the vehicle height will decrease. Adjustments must be made.

The pressure state during adjustment is measured by the pressure sensor 16 at predetermined time intervals and displayed on the digital display 28 each time.

Therefore, the driver can visually check changes in the pressure in each gas chamber via the digital display 28, and can accordingly adjust the vehicle height appropriately. On the other hand, when the switch 25 is set to rdownJ, the relief solenoid valve 15 opens intermittently at regular time intervals, the high pressure air in each gas chamber is gradually released, and the vehicle height is gradually lowered. For example, in the case of the front fork 8, it is Q, OKy/ca, but in the case of the rear cushion 10, it is 2.0/c+J. The pressure state during adjustment is measured by the pressure sensor 16 in the same way as above, and the pressure value is also displayed on the digital display 28. In the above,
When the switch 25 is in the neutral position, no vehicle height adjustment is performed, and if the switch 25 is set in the neutral position while the vehicle height is being adjusted, the adjustment is stopped. Further, when the switch 25 is in either rupJ or rdownJ, the vehicle height adjustment is determined in the initially selected state and does not change even if the switch 24 is switched back and forth. When the vehicle height adjustment is completed, the solenoid pulp 5 (or solenoid pulp 6
) is closed and then the solenoid pulp 5, 6 as described above
．． A zero pressure test is performed regarding the performance of pressure sensor 15 and pressure sensor 16. This pressure zero test is performed every time the vehicle height is adjusted.

Automatic vehicle height adjustment is performed to automatically adjust the vehicle height to an appropriate height while the vehicle is running or stopped. In this vehicle height adjustment device, automatic vehicle height adjustment is applied only to the rear part of the vehicle body, that is, the rear cushion 10, and when the auto start switch 23 is turned on, automatic vehicle height adjustment becomes possible.

According to automatic vehicle height adjustment, a reference vehicle height that is an appropriate vehicle height is determined in advance, and the vehicle height is adjusted according to the signal detected by the vehicle height sensor 18 based on this reference vehicle height.
The controller is configured to input signals such as "K", "HIGH", rT, OWJ, and "extension cut" to the control device.

When the auto start switch 23 is turned on, the lamp 27 starts blinking and the solenoid valve 6 opens. After that, the pressure in the gas chamber of the rear cushion 10 is detected by the pressure sensor 1.
6 and displayed on the digital display 28, and vehicle height information is input from the vehicle height sensor 18.
When the vehicle height state is ror'c-+, no vehicle height adjustment is performed. When the vehicle height state is r I (IGH, 1), the solenoid valve 15 opens intermittently and the vehicle height is gradually lowered under the condition that the pressure in the gas chamber does not fall below, for example, 2.OTrylcr&. High state is rO
When it reaches KJ, vehicle height adjustment will stop. Next, the vehicle height condition is r
At LOW J, the pressure in the gas chamber is, for example, 6.4 K.
The vehicle height is raised by operating the compressor 2 and supplying high pressure air to the gas chamber under the condition that the height does not become larger than y/crl. When the vehicle height status becomes "OK", vehicle height adjustment is stopped. When the vehicle height is “extended”,
Such a state occurs when the vehicle falls over, etc., but after confirming that the "extended" state has continued for a predetermined period of time (for example, 5 seconds or more), the entire system that makes up the vehicle height adjustment device, including the CPU 31, stop the operation.

2. After each adjustment operation, the solenoid valve 6 is closed, and after that, the solenoid valve 15 is opened for a certain period of time, and then the above-mentioned zero pressure test is performed. When the automatic vehicle height adjustment is completed, the lamp 27 goes out, and the vehicle returns to a state in which manual vehicle height adjustment can be performed again.

In the above, according to the manual vehicle height adjustment, the switch 24 can be switched to either the front side or the rear side only when the switch 25 is set to the "neutral" position, and the switch 25 is set to the "neutral" position. J, r down
When set to J, the configuration is such that even if the switch 24 is switched, it cannot be switched effectively. This can be done by controlling the CPU 31 so that the switching is not performed in a programmatic manner, or it can be configured so that the switch 24 is locked when the switch 25 is in rupJ or rdownJ.

The reason why such a configuration is adopted is that the gas chambers of the front fork 8 and the gas chamber of the cushion 10 have structurally different pressure resistance capabilities, and if the above switching is allowed, each gas chamber will be in an inappropriate pressure state. This is because in the case of 0 or more, the present invention can of course be applied to a vehicle height adjustment device using a gas other than air or an electromagnetic valve other than a solenoid valve. As is clear, according to the present invention, in the vehicle height adjustment device that can manually adjust the vehicle height of the front and rear of the vehicle body separately,
By prohibiting front and rear switching during vehicle height adjustment, the gas chambers of the front and rear suspension systems that change the vehicle height can always be maintained at appropriate pressures.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a vehicle height adjustment device according to the present invention, and Fig. 2 is a block circuit diagram of a control device. 8 is a front fork, 10 is a rear cushion, 15 is a relief solenoid valve, 16 is a pressure sensor, and 17 is a control device. Procedural amendment (voluntary) September 8, 1988 2, Title of invention Vehicle height adjustment device for motorcycles 3, Relationship with the case by the person making the amendment Patent applicant Showa Seisakusho 4, Agent (6735) Patent attorney Yo Shimoda part'・-;j. 5° Date of amendment order Voluntary

Claims (1)

[Claims] For each gas chamber formed in the front fork and rear cushion, select either front fork or rear cushion with the changeover switch and select either 'up-1 or rdownJ with the manual operation switch, and high pressure can be applied. A vehicle height adjustment device for a two-wheeled vehicle that adjusts the vehicle height by supplying or discharging gas, characterized in that the changeover switch can be switched only when the manual operation switch is in the "neutral" position. Vehicle height adjustment device for motorcycles.