JP2519014B2 - Vehicle stop device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle travel stop device for preventing accidents involving a person, a bicycle or the like on the ground and being caught in a rear wheel when the vehicle is turning (particularly when turning left). It is related to.

[0002]

2. Description of the Related Art Conventionally, as a measure for preventing this kind of accident, there is a protective frame fixed to a side portion of a vehicle so that an obstacle cannot enter in front of a rear wheel. .

[0003]

However, at the time of turning, the rear wheel passes through the inside of the turning with respect to the locus of the side protection frame, so that an obstacle outside the protection frame may also come into contact with the rear wheel. It was

[0004]

Means for Solving the Problems A front side and a rear side of a side surface of a vehicle are provided with a sensing device for laterally irradiating vibration waves such as light, radio waves, and sound waves, and sensing the reflected vibration waves. There is provided a stop device which causes the waves to cross each other and which is activated by a command from the sensing device when an obstacle touches the vibration wave.

[0005]

According to the present invention, when the steering wheel is operated to make a turn, when an obstacle enters the dangerous area, the traveling of the vehicle is stopped by the command of the sensing device.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 5, a vehicle 1 has a front wheel 3,
It is composed of a frame 7 on which the rear wheels 5, 5 are mounted, a driver's cab 9 mounted on the frame 7, and a cargo bed 11. A protective frame 13 is supported by the frame 7 along the outer side of the vehicle 1 to define a dangerous area between the front wheel 3 and the rear wheel 5. Frame 7
An engine 15 is attached to the front part of the engine and a fuel tank 17 is attached to the one side.

At the side of the vehicle 1, there is provided a sensing device 18 which senses when an obstacle such as a person intrudes into a dangerous area at the time of turning. The sensing device 18 is configured as follows. That is, in the front part of the side surface of the vehicle 1, a front sensing unit (the present embodiment) that irradiates a vibration wave (infrared ray in this embodiment) A in a lateral direction to sense a reflected vibration wave and actuate the front switch SW-3 In the example, the photoelectric device 19 and a rear sensing unit that operates the rear switch SW-4 by sensing the reflected vibration wave of the vibration wave (infrared ray in this embodiment) B that intersects the vibration wave A (the photoelectric device in this embodiment). ) 21 and are provided.

FIG. 3 shows a steering device 39 of the vehicle 1, which is constructed as follows. That is, the gear case 45 is attached to the lower end of the handle shaft 43 of the steering handle 41.
When the steering handle 41 is rotated, an arm 49 fixed to the worm wheel shaft 47 is swingable in the front-rear direction via a worm and a worm wheel (not shown) provided inside. ing. The power cylinder 51 has a bottom portion pivotally attached by a shaft 57 to an arm 55 pivotally attached to the frame 7 by a shaft 53 so as to be swingable in the front-rear direction, and the other end of a piston rod 59 is attached by a shaft 61 to the frame 7. Is pivotally attached to. One end of the connecting rod 63 is pivotally attached to the arm 49, and the other end thereof is pivotally attached to the side surface of the power cylinder 51. The power cylinder 51 is such that when the steering handle 41 is rotated, an operating valve (not shown) provided inside opens, and the power cylinder 51 expands or contracts in that direction by the hydraulic pressure of a hydraulic pump (not shown). Front axle 65
Are rotatably pivoted horizontally by shafts 69 at both ends of a cross beam 67 mounted on the lower front portion of the frame 7 via an ammunition (not shown). The front wheels 3, 3 are rotatably supported on the left and right front axles 65, 65, and are interlocked by rods 73 having both ends pivotally attached to arms 71, 71 projecting forward of the respective front axles 65, 65. There is. One end of a connecting rod 77 is connected to the lower end of the arm 55 via a universal joint 75, and the other end is connected to an arm 79 protruding inward on the rear surface of the front axle 65 via a universal joint 81.
The steering device 39 includes a detection device 8 for detecting the steering amount.
2 is provided and is configured as follows. That is, a cam 83 centering on the worm wheel shaft 47 is fixedly provided on the upper end of the arm 49, and abuts on the switch SW-2 fixed to the frame 7 to cause the worm wheel shaft 4 to move.
The switch SW-2 is provided so as to operate when the switch 7 rotates by a predetermined amount.

The stop device 84 is constructed as follows in cooperation with the operation of the sensing device 18, the detection device 82. That is, as shown in the air circuit diagram of FIG.
The pressure air generated by the compressor 85 driven by 5 passes through the air tank 87, the control valve 89 and the solenoid valve 91 provided in parallel, and the shuttle valve 93.
It is sent to an air cylinder 95 and is provided to brake the front wheels 3.

Further, as shown in the electric circuit of FIG. 5, the current of the power source 97 passes through a switch SW-2, a front switch SW-3 and a rear switch SW-4 which are provided in parallel, and relays R-2 and R-3, respectively. , R-4, and also to contacts r-2 and solenoid SOL-1 via contacts r-3 and r-4 separately provided in parallel.

In the above-described embodiment, when the steering handle 41 is rotated to drive the vehicle 1 to turn to the left, the arm 49 swings forward, and at the same time, the cam 83 rotates to switch. SW-2 is connected, relay R-2 is energized, and contact r-2 is connected.

If the sensing unit (photoelectric device) 19 or 21
When an obstacle on the ground, such as a person, crosses one of the irradiation rays of, the switch SW-3 or SW-4 is connected, the contact point r-3 or r-4 is connected, and the solenoid S
The OL-1 is energized, the solenoid valve 91 is switched from the a position to the B position, the air cylinder 95 is operated, the front wheels 3, 3 are braked, and the vehicle 1 is stopped.

[0014]

Since the present invention has the structure as set forth in the claims, the detection device for detecting the turning time by turning the steering device and the side surface of the vehicle are illuminated to detect the reflected vibration wave. By operating with the sensing device, it is possible to prevent an obstacle on the ground such as a person from being caught in the rear wheel when turning. Moreover, since the irradiation vibration waves of the front and rear sensing parts are provided so as to intersect with each other, a blind spot does not occur in the dangerous area at the time of turning, and an obstacle entering the dangerous area from any direction can be sensed. Is.

In the present invention, the safety device may be provided to give an alarm to the driver and people on the ground.

Further, the infrared sensing unit shown in the embodiment is
It may be a device that irradiates other waves, electromagnetic waves, vibration waves such as ultrasonic waves, and senses the reflected waves.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle equipped with an embodiment of the present invention.

FIG. 2 is a plan view of a vehicle equipped with an embodiment of the present invention.

FIG. 3 is a perspective explanatory view of a main part of the present invention.

FIG. 4 is an explanatory diagram of an air circuit.

FIG. 5 is an explanatory diagram of an electric circuit.

[Explanation of symbols]

 1 Vehicle 18 Sensing Device 19 Front Sensing Unit 21 Rear Sensing Unit 41 Steering Handle 82 Detection Device 84 Stopping Device 95 Air Cylinder

Claims (1)

(57) [Claims] 1. A vibration wave A in a lateral direction on a front portion of a side surface of a vehicle 1.
And a front sensing unit 19 that senses a reflected vibration wave and activates the front switch SW-3, and a rear portion of the same side surface of the vehicle 1 that is laterally irradiated and vibrates to cross the vibration wave A. A steering device 39 is provided which is provided with a sensing device 18 including a rear sensing portion 21 which senses a reflected vibration wave of the wave B and actuates the rear switch SW-4, and which is steered by the steering handle 41 of the vehicle 1.
SW-2 for detecting a predetermined operation amount in the dangerous area
Is provided, and the vehicle 1 is operated in conjunction with the turning state in which the switch SW-2 of the detecting device 82 operates and the operating state in which either the switch SW-3 or SW-4 of the sensing device 18 operates. A travel stopping device for a vehicle, characterized in that a stopping device 84 composed of an air cylinder 95 for wheel braking to be stopped is operated.