JPH04183693A - Running vehicle - Google Patents

Abstract

PURPOSE:To improve cornering speed of a vehicle by supporting a riding part with a support shaft capable of swinging to right and left on a carriage having steering wheels, and by inclining the riding part so that a detected value of acceleration in the lateral direction may become less than a predetermined value at cornering driving. CONSTITUTION:This vehicle 1 is constituted of a carriage 2 and a riding part 3, and the carriage 2 is a four wheel vehicle and has front wheels 4, that is, steering wheels and rear wheels 5. In the meantime, the riding part 3 is supported on the carriage capable of swinging to right and left with a support shaft 7 in the front and rear direction, and its inclination angle is adjusted by an operation mechanism 8 according to an output signal of an accelerometer, that is, an output signal of a G sensor 9 for detecting lateral G acting in the lateral direction at cornering. That is, the operation part 8 has a left roll cylinder 10L and a right roll cylinder 10R, whose lower ends are pivoted to the carriage 2 and upper ends to the riding part 3, and a valve provided at a pipeline for supplying hydraulic pressure to each of the cylinders 10L and 10R is controlled based on output of the G sensor 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle that is cornering or turning.

(Prior art) A riding section is swingably supported on a bogie section having wheels, and when cornering, the rider tilts the riding section by shifting his/her weight to cancel the lateral centrifugal force by centripetal force, thereby cornering. Vehicles with improved drivability are conventionally known. Examples of this type of vehicle include Utility Model 83-61389
In this publication, the boarding section is fixed to the trolley when the vehicle is stationary or at low speed, and the boarding section is made swingable when traveling at a certain speed or higher, so that it can be adjusted by the weight shift of the occupant. The riding section is tilted to improve cornering performance.

(Problems to be Solved by the Invention) In the conventional technology described above, the driver must shift his weight each time he turns the steering wheel, which requires an extra movement.

An object of the present invention is to obtain a vehicle that does not require such extra operations.

(Means for Solving the Problems) A means for solving the problems in the present invention is to provide a vehicle in which a bogie having steered wheels supports a riding section so as to be swingable from side to side on a support shaft in the front and back direction, and an operating mechanism provided in the riding section for tilting the riding section; and an operating mechanism provided in the riding section for tilting the riding section so that when the lateral acceleration during cornering is detected, the detected value of the acceleration detection means becomes equal to or less than a predetermined value. and a control device for operating the actuation mechanism.

(Function) Since the above-mentioned means is provided, the riding section is automatically tilted by the operating mechanism so that the lateral acceleration is always below a predetermined value, and the centrifugal force applied to the riding section can be reduced.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment. This vehicle 1 consists of a bogie 2 and a riding section 3. The bogie 2 is a four-wheel vehicle and has front wheels, that is, steered wheels 4 and rear wheels 5. 4 is steered by a steering wheel 6 operated by driver vehicle A. Between the handle 6 and the steering wheel 4, a flexible power transmission mechanism such as a hydraulic power or a cable is interposed in addition to a typical steering mechanism for a four-wheeled vehicle.

The riding section 3 is supported by the cart 2 on a support shaft 7 extending in the front-rear direction so as to be able to swing from side to side, and its inclination angle is adjusted by an operating mechanism 8. In addition, the boarding section 3 has lateral G that acts in the lateral direction during steering.
An accelerometer or G sensor 9 is provided to detect.

As shown in FIG.
L and right roll cylinder IOR, lower end 11L and I
The IR is pivotally connected to the truck 2, and its upper ends 12L and 12R are pivotally connected to the boarding section 3. Pipe lines 14L, 14 supply hydraulic pressure from the hydraulic pump 14 of the actuator 3 to each cylinder IOL, IOR via valve A or A2.
R is connected, and both pipes 14L.

14R also has conduits and valves B, , B2 that connect to the tank 15 which is open to the atmosphere.

The G sensor 9 generates N, L, and H signals indicating the position when the material ff1M, which is elastically supported at the neutral position, is at the neutral position and the left/right movement position, and sends the signals to the control device. input to open and close valves A1, A2, Br, and B2. The answering action is shown in the action diagram of FIG.

When the vehicle is stopped or moving straight, the G sensor signal is N and the response valve remains closed, so the passenger compartment is in an upright state. The G sensor outputs an R signal and valve A is activated according to Figure 4.
2. B opens, and valves A, B2 close. Therefore, the oil pressure of the pump 14 flows into the right roll cylinder IOH and extends it, and the oil in the left roll cylinder IOL flows into the tank 5.
to shorten the cylinder IOL. As a result, the boarding section 3 is accelerated by the acceleration of gravity G in the vertical direction, as shown in FIG.
It is tilted so as to substantially match the direction of the composite vector Gr of V and the lateral acceleration Gh, and the inclination angle θ is the composite vector Gr.
When the N signal is generated in a state substantially matching the angle θ formed by the vertical line and the slope state is maintained, and when cornering is completed and the vehicle returns to straight travel, the centrifugal force GR approaches zero, while the riding section 3 The inclination angle θ remains large, and in order to return θ to zero, the G sensor outputs an L signal, and the response valve is opened and closed in the opposite manner to the above, and the riding section 3 returns to the upright state.

In addition, when traveling straight at a speed of 10 + 11 or more per hour, A, as shown in column H of Fig. 4, is manually operated.

It is also possible to close A2 and open B, . . . so that the riding section can swing freely, allowing operation by shifting the weight.

Next, in the second embodiment shown in FIGS. 5 to 9, the steering operation is performed by an operating mechanism 21 that tilts the riding section and a turning section 22 that is operated by the tilt.

The operating unit 21 has two sticks 23L and 23R arranged on both sides of the driver, and each stick has front and rear mask cylinders LP and LR as shown in FIG.

RF and RR are connected, mask cylinder LP is connected to right roll cylinder 24R, mask cylinder RP is connected to left roll cylinder 24L, and mask cylinders LR and RR are connected.
are interconnected and work together.

The deflection section 22 moves a tie rod 27 that connects an arm 2B extending from the knuckles 25 of the front wheels 4, 4. Steering cylinders 28L and 28R are connected to the tie rod 27, and the actuator 13 is the same as the one described above. Structure: Hydraulic pump 29 and tank 30 are connected to cylinder 2
Valves A, A are connected to pipes 31 and 32 that connect to 8L and 28R.
2 are connected to the pipes 31 and 32, and valves B, .

While the vehicle is moving straight, the G sensor 9 emits a neutral signal N, but if you push the left stick 23L forward and pull the right stick 23H backwards, either singly or simultaneously, to turn the vehicle to the left. , the oil in the left roll cylinder LP is forced to the right roll cylinder 24R and expanded, and the left roll cylinder 24L returns the oil to the right mask cylinder RF to shorten it, so that the riding part 3 is tilted with its left side facing down.

Due to this inclination, the quality ff1M of the G sensor 9 moves to the L side and issues an L signal, and the valves A, B2 are opened according to the operation diagram of FIG. 9, and the valves A2. B, close it, send hydraulic pressure to the left steering cylinder 28L to push out the tie rod 27, turn the steering wheel 4 to the left,
The oil in the right operating cylinder 28H is discharged into the tank 30. This operation is continued until the composite vector of G matches the longitudinal direction of the boarding section 3. Stick 23L,
When 23R is restored and the boarding section 3 is restored, the G sensor 9
issues an R signal to return the steered wheels 4 to the neutral position.

Next, FIGS. 10 to 13 show still another embodiment,
As in the second embodiment, the G sensor is activated by tilting the riding section 3 using a stick. Operation unit 4
1 is a stick 42L.

It has 42R1 master cylinders LP, LR, RP, and RR, and LP and RF are communicated. The left and right steering cylinders 43L and 43R each have two steering cylinders L, , L2 . R, , R2, each of which is connected to a tie rod 27, among which the cylinder L
, and R3 are the master cylinders LR and I? Connected to H.

The actuator 44 includes a pump 45, a tank 46, and a valve A.
s, A, 2, B+, and B2, and the pipe line 47°48 is connected to the steer cylinder L2. The right roll cylinder 4 is connected to R2 by a branch pipe having valves c, , C2.
9R and the left roll cylinder 49L. The response is opened and closed by the G sensor 9 as shown in the operation diagram in FIG.

If one or both of the stick 42L is moved forward or the stick 42R is moved backward for a left turn,
The oil in the mask cylinder RR enters the right steering cylinder R0 and pushes the tie rod 27, first turning the steered wheel 4 slightly in the right turning direction. Due to this steering, the left steering cylinder L2 is shortened, and at this time the G sensor 9
is in the range of N and valves C, , C2 are open. Therefore, the oil in the steering cylinder L2 flows into the right roll cylinder 49R, causing the riding section to tilt to the left. As a result, the G sensor 9 fixed to the riding section generates an L signal, which closes the valves C, , C2 according to the operation diagram.
2 is opened to allow oil to flow from the pump 45 into the steering cylinder L2, the steering wheels 4, 4 are steered to the left, and the vehicle is turned to the left.

In each of the above embodiments, the G sensor type may be either mechanical or electric, and may be a mechanical type using links, cams, etc. instead of hydraulic mechanisms such as roll cylinders and steering cylinders. It is optional whether a wheel type or stick type is used as the steering wheel mechanism.

If each of the above embodiments is applied to a vehicle as shown in FIGS. 14 to 17, it will be possible to create a narrow vehicle with good stability and excellent cornering performance. The vehicle can have improved visibility. 14th
The figure shows a two-wheeled vehicle with very thick tires that is self-supporting with one steering wheel 4 and a rear wheel 5 provided on a truck 2, and a riding section 3 is provided on the truck 2 so as to be swingable. 15 has one steered wheel 4 and two rear wheels 5, FIG. 16 has two steered wheels 4 and one rear wheel 5, and FIG. 17 has two steered wheels 4 and two rear wheels 5. It has a steering wheel 4 and a rear wheel.

In these vehicles, the front and back relationship between the steered wheels 5 and the rear wheels 4 may be reversed, or all the front and rear wheels may be used as steered wheels.

(Effect of the invention) As described above, when cornering, the riding section is tilted by the lateral acceleration detection means so that the detected value is less than a predetermined value, so the driver can easily move the vehicle without shifting his/her weight. Since the vehicle can corner quickly, it has the effect of increasing the cornering speed of the vehicle.

[Brief explanation of the drawing]

1 to 4 show the first embodiment, and FIG. 1 is a side view;
Fig. 2 is a rear view, Fig. 3 is a circuit diagram, Fig. 4 is an operation diagram of the valve, Figs. 5 to 9 show the second embodiment, Fig. 5 is a side view, and Fig. 6 is a plan view. Figure 7 is a circuit diagram of the roll mechanism, Figure 8 is a circuit diagram of the roll mechanism.
The figure is a circuit diagram of the steering mechanism, Figure 9 is a diagram of valve operation,
Figures 10 to 13 show the third embodiment, Figure 10 is a side view, Figure 11 is a plan view, Figure 12 is a circuit diagram, Figure 13 is a valve operation diagram, and Figures 14 to 13. Figure 17 shows the vehicle model, with (a) being a plan view and (b) being a rear view. 1... Vehicle 2... Vehicle 3... Riding section 4... Steering wheel 7... Support shaft 8,
21... Operating mechanism 9... 3 people other than G sensor -

Claims (1)

[Claims] A vehicle in which a bogie with steering wheels supports a riding part so as to be able to swing from side to side with a support shaft in the longitudinal direction, an operating mechanism that tilts the riding part about the support shaft, and a mechanism installed in the riding part during cornering. The vehicle is characterized by comprising an acceleration detection means for detecting the lateral acceleration of the vehicle, and a control device for operating the actuation mechanism to tilt the riding section so that the detected value of the acceleration detection means is equal to or less than a predetermined value. Running vehicle.