JPS62295783A - Attitude regulator for motorcycle - 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 3. Detailed Description of the Invention A1 Purpose of the Invention (1) Industrial Application Field The present invention is directed to controlling a pneumatic front and rear suspension system that supports front and rear wheels on a vehicle body, respectively. The present invention relates to an attitude adjustment device for a motorcycle that can appropriately adjust the attitude of a vehicle body.

(2) Prior Art Motorcycles in which one of the front and rear suspensions is provided with vehicle height adjustment means are conventionally known.

(3) Problems to be Solved by the Invention In the conventional system described above, the effective length of the suspension system, which does not have a vehicle height adjustment means, may deviate from the appropriate range depending on the driving conditions of the vehicle. Overall, there is a problem in that the vehicle body posture cannot be maintained properly. Therefore, in order to eliminate such problems,

If the rear suspension device is provided with separate vehicle height adjustment means, the device becomes larger and heavier, which is disadvantageous when it is installed in the narrow body space of a motorcycle.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a posture adjustment device for a motorcycle that can solve the above-mentioned problems of conventional devices.

Structure of B0 invention (1) Means to solve problems In order to achieve the above object, the present invention is directed to the front of the vehicle body.

pneumatic front and rear suspensions for supporting the rear wheels respectively, and a common air pump for supplying pressurized air to air cylinders capable of adjusting the effective length of these suspensions;
A first valve that can be opened and closed separately between this air pump and the air cylinders of the front and rear suspension systems. A second pressurized air supply valve.

(2) Effect According to the above configuration, the first pressure air supply valve on the front wheel side and the second pressure air supply valve on the rear wheel side are each controlled separately, and the front and rear suspension systems are connected to each other by controlling the common air pump. Since the supply of pressurized air to each air cylinder can be controlled separately, the effective lengths of the front and rear suspension systems, and therefore the vehicle heights of the front and rear of the vehicle body, can be controlled independently of each other, and the overall posture of the vehicle body can be controlled independently. can always be adjusted appropriately.

(3) Examples Examples of the present invention will be explained below with reference to the drawings.
In FIG. 1, a front wheel 4 and a rear wheel 5 are supported on a body 1 of a motorcycle M via front and rear suspensions 2.3, respectively. The front and rear suspension systems 2.3 each include a pair of left and right front and rear air cylinders 6C whose effective lengths can be adjusted.
6r; 7ff.

It is equipped with 7r.

An electric air pump P is mounted at a suitable location on the vehicle body 1, and a conduit 8 extending from the discharge portion of the air pump P connects each front air cylinder 6f! , 6r, and each rear air cylinder 7j! , 7r, and a second connecting pipe 9□. First connecting pipe9. A normally closed first pressurized air supply valve 111 which is opened by the energization of the solenoid 1 is interposed in the middle of the supply valve 11 and the first connecting pipe 9 on the downstream side. An air exhaust passage 121 is connected to the air exhaust passage 121, and a solenoid 13. The valve is opened by the bias of the passage 12. A normally closed pressure air discharge valve 14, which can be opened to the atmosphere. is provided.

On the other hand, the first pressure air supply valve 1 is also connected to the second connecting pipe 9□.
11 and discharge valve 14. A second pressure air supply valve 11□ and a discharge valve 142 having the same configuration as in the above are provided.

The air pump P, first. Second pressure air supply valve 111.
112 and 1st. The operation of the second pressure air discharge valves 14□, 14□ is controlled by an output signal from a control device 25 mounted at a suitable position on the vehicle body 1, and the control device 25 is connected to the driving state detector 2.
6 and front and rear posture change detectors 27' and 27, respectively. Reference numeral 28 indicates a power source thereof, and reference numeral 29 indicates a main switch. An example of the installation position of these on the motorcycle M is shown in FIG.

Next, the configuration of each detector will be specifically explained with reference to FIGS. 3A, B and 4A, B.

First, as shown in FIGS. 3A and 3B, the running state detector 26 consists of a rotary plate 31 that rotates in conjunction with the pointer shaft of a vehicle speed meter 30, and a photoelectric device 32 provided near the periphery of this rotary plate 31. configured. A notch 33 is formed on the peripheral edge of the rotary plate 31 over a rotation angle range corresponding to a vehicle speed of a predetermined value (for example, 16 km/h) or higher, while the photoelectric device 32
It is equipped with a light emitter 32a and a light receiver 32b, and the light emitter 3
When the vehicle speed is less than a predetermined value, the light emitted from the light receiver 32b is blocked by the rotating plate 31 and does not reach the light receiver 32b, and when the vehicle speed exceeds the predetermined value, the light passes through the notch 33 as the rotating plate 310 rotates. and reaches the light receiver 32b. When the light emitted from the light projector 32a reaches the light receiver 32b, the charging device 32 immediately generates a high level output signal indicating that the vehicle speed has exceeded a predetermined value, that is, the motorcycle is substantially in a running state.

The following table shows the output level of the photoelectric device 32, ie, the running state detection device 26, in response to changes in vehicle speed.

Table 1 Next, as shown in Figures 4A and 4B, the rear attitude change detector 27 is connected to a lift 34 that is connected to the rear of the vehicle body 1 of the motorcycle M and moves up and down according to changes in the vehicle height, and a rear suspension system. 3
The first and second photoelectric devices 35.3 are connected to the rear fork 3a, which is a constituent member, and are arranged around the elevating plate 34.
These photoelectric devices 35 and 36 each have a light projector 35a, 36a and a light receiver 35b, 36b. The lifting plate 34 has first and second slits 37 and 38 extending vertically, respectively, such that a certain lower area of the first slit 37 and a certain upper area of the second slit 38 are adjacent to each other in the horizontal direction. Both slits 1-37 and 38 are offset in the vertical direction, and the first slit 37 and the second photoelectric device 35 and the second slit 38 have the following cooperative relationship with each other. have.

That is, when the vehicle height at the rear of the vehicle body is within the specified value range, the light emitted from each of the projectors 35a and 36a is
7. Pass through 38 to the light receiver 35b.

36b and when the vehicle height decreases below the specified value range, the light emitted by the projector 35a passes through the slit 37 and reaches the receiver 35b, but the light emitted by the projector 26a is blocked by the elevation vi34. When the light does not reach the light receiver 36b and the height of the vehicle increases beyond the specified value range, contrary to the above, the light tW35b is not received and the light receiver 36b receives the light. Each photoelectric device 35, 36 provides a high level output signal when its photoreceiver receives light.

Here's the first one. The output levels of the second photoelectric devices 35 and 36 are shown in the following table in response to changes in the vehicle height at the rear of the vehicle body.

Table 2: The structure of the front attitude change detector 27', which detects whether the vehicle height at the front of the vehicle is within the specified value range, is installed in the front fork of the vehicle 1. is omitted.

The running state detector 26 and the front and rear attitude change detectors 2
The respective output signals 7' and 27 are sent to the input of the control 911 device 25.

Next, to explain the operation of this embodiment, first, the main switch 2
Close 9.

If the vehicle speed is less than a predetermined value, the driving state detector 26
Since the output of is at a low level, the control device 25 controls
Air pump P, 1st. Second pressure air supply valve 11. ．． 11
□ and 1st. Second pressure air discharge valve 14. ．． All 14□ are kept inactive, so answer 11. ,11□,L
L.

14□ is maintained in a closed state, and the air pump P remains stopped.

When the vehicle speed exceeds a predetermined value and the motorcycle is substantially in a running state, and the vehicle height at the rear of the vehicle body has decreased below a specified value range, the running state detector 26 and the rear attitude change detector 27 are activated. In response to each output signal, the control device 25 operates the air pump P and the second pressure air supply valve 11□, so that the pressure air from the pump P is supplied to the valve 11 in the open state.
The air is supplied to the left and right air cylinders 7C7r of the rear suspension system 3 through □, and as they expand, the vehicle height at the rear of the vehicle body increases.

If the vehicle height at the rear of the vehicle body returns to within the specified value range due to this increase in vehicle height, and the vehicle speed is still higher than the predetermined value and the motorcycle is substantially in a running state, the rear attitude change detector 2
Since the output signal 7 returns to its original state, the second pressure air supply valve 11□ returns to the closed state and the air pump P becomes inactive again.

When the vehicle speed is above a predetermined value and the motorcycle is substantially in a running state, and the vehicle height at the rear of the vehicle body has increased beyond the predetermined value range, the running condition % IQ output 26 and rear posture change detection are performed. In response to each output signal from the device 27, the control device 25 opens only the second pressure air discharge valve 14□, and each air cylinder 7j of the rear suspension system 3! , 7r are opened to the atmosphere through the air exhaust passage 12□, so that the vehicle height at the rear of the vehicle body is reduced by contraction of the cylinders. When the vehicle height returns to within the specified value range, the second pressure air discharge valve 14□
The valve returns to the closed state again.

Further, when the vehicle height at the front of the vehicle changes, the front attitude change detector 27' detects the state of the change and sends an output signal to the control device 25, which controls the height of the rear of the vehicle. The supply and discharge of pressurized air to each air cylinder 5ff and 5r of the front suspension system 2 is controlled in the same way as when changing the vehicle height,
The vehicle height at the front of the vehicle body can be adjusted accurately at all times.

FIG. 5 shows a modification of the running state detector 26, in which the position of the notch 33 of the rotary plate 31 is determined so that the light receiver of the photoelectric device 32 receives light when the vehicle speed is less than a predetermined value. It will be done. FIG. 6 also shows a modification of the rear attitude change detector 27, which includes the first and second photoelectric devices 35, 36.
The positions of are reversed from those in FIG. 4A.

7A and 7B show another modification of the rear attitude change detector 27, which includes a rotary plate 52 rotatably supported on the vehicle body 1 and a first and second rotary plate 52 disposed close to the outer circumference of the rotary plate 52. The rotary plate 52 is connected to the rear fork 3a via an operating lever 53 and a connecting rod 54, and rotates in conjunction with the vertical swing of the rear fork 3a. There is. Further, the rotating plate 52 is connected to the photoelectric devices 35 and 3.
When the vehicle height is within the specified value range, only the light from the light emitter 35a of the first photoelectric device 35 passes through the shallow cutout 55 and reaches its light receiver. 35b and when the vehicle height is below the specified value range, the light from the projectors 35a and 36a of both light type devices 35 and 36 is blocked by the rotary plate 52, and when the vehicle height is above the specified value range, The light from the projectors 35a and 36a of the double-light type devices 35 and 36 passes through the deep notch 56 to the respective receivers 35b and 36.
b. In this case, the connecting rod 54 is equipped with a turnbuckle 57, and by operating this turnbuckle 57, the length of the connecting rod 54 is adjusted to change the phase of the notches 55, 56 of the rotary plate 52. The value of the vehicle height to be adjusted can be increased or decreased.

Further, the attitude change detector 27 may directly detect the distance between the vehicle body 1 and the road surface, or may directly detect the swing angle of the rear fork 3a.

C9 Effects of the Invention As described above, according to the present invention, there is provided a pneumatic front and rear suspension system that supports the front and rear wheels on the vehicle body, and a pressurized air cylinder that can adjust the effective length of these suspension systems. The system includes a common air pump for supplying air, and first and second pressure air supply valves that can open and close the air pump and the air cylinders of the front and rear suspension systems separately. By controlling the first pressure air supply valve and the second pressure air supply valve on the rear wheel side separately, the supply of pressure air from the air pump to the front and rear suspension systems can be controlled independently of each other. As a result, the effective lengths of the front and rear suspension systems, and therefore the vehicle heights of the front and rear portions of the vehicle body, can be controlled independently of each other, so that the attitude of the vehicle body as a whole can be adjusted appropriately at all times. Moreover, since pressurized air can be supplied to the front and rear suspension systems from a single common air pump, the structure of the system is simple and compact and lightweight, which is advantageous when installed in the narrow body space of a motorcycle. be.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is an overall side view of a motorcycle equipped with a device of the present invention, FIG. 2 is a schematic diagram of the device of the present invention, and FIG. 3A is a front view of a running state detector. Figure, 3rd
Figure B is an enlarged vertical cross-sectional view of the main part, No. 4 AI3 is a front view of the rear attitude change detector, and Figure 4B is a cross-sectional view of the main part.
FIG. 5 is a front view of a modified example of the running state detector, FIG. 6 is a front view of a modified example of the rear attitude change detector, and FIG. 7A is a front view of a modified example of the rear attitude change detector of a motorcycle. A rear side view, FIG. 7B is an enlarged front view of the main part, and FIG. 7C is an enlarged perspective view of the main part. M...Motorcycle, P...Air pump, 1...Vehicle body, 2...Front suspension device, 3...Rear suspension device, 4
...Front wheel, 5...Rear wheel, 6L 6r, 74! ,7
r...Air cylinder, 11+, 11□...1st. Second pressure air supply valve

Claims (1)

[Claims] A pneumatic front and rear suspension system for supporting the front and rear wheels on the vehicle body, a single common air pump for supplying pressurized air to air cylinders capable of adjusting the effective lengths of these suspension systems, and A posture adjustment device for a motorcycle, comprising a pump and first and second pressure air supply valves that can be opened and closed separately between air cylinders of front and rear suspension systems.