JPH1159357A - Automatic braking device and its releasing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To brake a vehicle automatically without stopping the engine, when making contact with something, and be moved promptly after it has been removed. SOLUTION: When a touch sensor 14 detects that a vehicle made contact with something, a controller 33 operates an emergency brake operation means 16, an emergency clutch operation means 17. and an emergency engine adjustment means 18 according to the detection output of the touch sensor 14. Therefore, the emergency brake operation means 16 operates a brake device irrespective of whether or not a brake pedal is being operated, the emergency clutch operation means 17 releases a clutch irrespective of whether or not a clutch pedal is being operated, and the emergency engine adjustment means 18 puts the speed of the engine 21 into idle irrespective of whether or not an accelerator pedal is being operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically braking a vehicle when foreign matter comes into contact with the vehicle, and a device for releasing the automatic braking device.

[0002]

2. Description of the Related Art Conventionally, as this type of automatic control device, a control circuit based on detection outputs of a foreign object detection sensor which operates when a foreign object comes into contact with a vehicle and a vehicle speed detection sensor which operates at a vehicle speed equal to or lower than a certain speed. Discloses a vehicle foreign matter detecting and braking device configured to operate a brake by controlling a brake solenoid valve (Japanese Utility Model Application Laid-Open No. 58-98258). In this device, if foreign matter comes into contact with the vehicle when the vehicle is turning left or moving backward, the brake is automatically applied and the vehicle can be stopped.

On the other hand, the vehicle includes an accelerator switch, a clutch switch, a neutral switch, and an electromagnetic check valve for braking. When at least the clutch switch and the neutral switch indicate a vehicle starting state, the control means deactivates the check valve. A braking force holding device configured as described above is disclosed (Japanese Utility Model Laid-Open No. 63-165266). In this device,
When a predetermined condition for stopping the vehicle on the sloping road is satisfied, the control means urges the electromagnetic check valve for braking, so that the braking force acts on the vehicle and the vehicle stops. Next, when starting the vehicle, at least when the clutch pedal is released and when a gear position other than neutral is detected, it is determined that the vehicle is in the vehicle start state, and the holding of the braking force is released. As a result, in the state where the gear is in the neutral state, the braking force is not released even if the foot is released from the clutch pedal, so that the driver's labor can be reduced not only on the uphill road but also on the downhill road.

When the driving condition of the vehicle meets predetermined conditions, the braking force of the braking device of the vehicle is held by the electromagnetic control valve, and the brake pedal is depressed during the operation of holding the braking force by the electromagnetic braking valve. A braking force holding device is disclosed in which the release control means releases the braking force holding state by the electromagnetic control valve when the detecting means detects that an operation has been performed (Japanese Utility Model Application Laid-Open No. Hei 3-8958). ). In this device, the holding state of the braking force of the vehicle can be released by a simple operation of the brake pedal, so that the operability can be improved. The holding of the braking force can be released simply by inserting the brake force. Further, even if the brake pedal is pressed too much on a snowy road or the like and the vehicle is locked, and the braking force is maintained, it is only necessary to depress the brake pedal, so that the vehicle can be unlocked without difficulty. ing.

[0005]

However, in the above-described conventional vehicle foreign matter detection and braking device, when the foreign matter comes into contact with the vehicle, the brake can be automatically activated to stop the vehicle. Nothing is disclosed about how to change the brake or how to release the brake. That is, there is no disclosure of conditions or methods for quickly moving the vehicle to a road shoulder or the like after removing the contacted foreign matter.

On the other hand, the above two conventional braking force holding devices automatically brake the vehicle when a predetermined condition is satisfied, and hold the braking force when another condition is satisfied. Although released automatically, the primary purpose of any of these devices is to facilitate starting on a slope. That is, the conditions for braking the vehicle are as follows: the accelerator pedal is not depressed, the clutch pedal is depressed more than half a clutch, the brake pedal is depressed, and the vehicle speed is equal to or less than a predetermined value, or the brake pedal is depressed. When the vehicle is depressed, the gear is shifted to the neutral position, and the vehicle speed is equal to or lower than a predetermined value, the conditions for releasing the braking force include:
As described above, at least when the clutch switch and the neutral switch indicate the vehicle start state, or when the brake pedal is depressed. Therefore,
These conditions cannot be adopted as conditions for switching the clutch or engine when the vehicle comes into contact with foreign matter.

SUMMARY OF THE INVENTION It is an object of the present invention to automatically brake a vehicle without stopping an engine when foreign matter comes into contact with the vehicle and to quickly move the vehicle after removing the foreign matter, and to release the automatic braking device. It is to provide a device. Another object of the present invention is to provide an automatic braking device that can prevent a vehicle from starting to move against a driver's intention in a state where an emergency brake operating unit or the like is released, and a device for releasing the automatic braking device.

[0008]

The invention according to claim 1 is
As shown in FIGS. 1 and 2, a brake device for braking the vehicle 10 by depressing a brake pedal, an emergency brake operating means 16 for operating the brake device regardless of whether the brake pedal is depressed, and a clutch pedal Emergency clutch actuating means 17 for disengaging the clutch regardless of whether the vehicle is depressed, emergency engine adjusting means 18 for setting the rotational speed of the engine 21 to the idling state regardless of whether the accelerator pedal is depressed, A touch sensor 14 for detecting whether or not a foreign object has contacted 10;
When the touch sensor 14 detects that a foreign object has come into contact with the vehicle 10, the controller 33 that operates the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18 based on the detection output. It is a braking device.

In the automatic braking device according to the first aspect, when a foreign object comes into contact with the vehicle 10, the controller 33 automatically activates the emergency brake operating means 16 to determine whether or not the brake pedal is depressed. Regardless, the vehicle is braked by operating the brake device. At the same time, the controller 33 operates the emergency clutch operating means 17 to release the clutch regardless of whether or not the clutch pedal is depressed, and further operates the emergency engine adjusting means 18 regardless of whether or not the accelerator pedal is depressed. To set the rotation speed of the engine 21 to an idling state. As a result, the vehicle 10 can be braked without stopping the engine 21.

According to a second aspect of the present invention, as shown in FIGS. 1 and 2, the automatic braking device according to the first aspect, a vehicle speed sensor 24 for detecting the speed of the vehicle 10, and whether a brake pedal is depressed. A brake sensor 26 for detecting whether or not
A clutch sensor 27 for detecting whether or not a clutch pedal is depressed; a vehicle speed sensor 24 for detecting that the vehicle 10 is in a stopped state; and a touch sensor for detecting that a foreign object contacting the vehicle 10 has been removed. 14, when the brake sensor 26 and the clutch sensor 27 detect that both the brake pedal and the clutch pedal are depressed, the controller 33 causes the sensors 24, 14,.
This is a release device of the automatic braking device configured to release the operations of the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18 based on the detection outputs 26, 27.

According to the second aspect of the present invention, when a predetermined condition is satisfied in a state where the brake device is operated by the emergency brake operating means 16 and the vehicle 10 is braked, that is, the vehicle speed 10 is stopped and the foreign matter is stopped. Is removed and both the brake pedal and the clutch pedal are depressed, the controller 33 releases the operation of the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18. As a result, the vehicle 10 can be promptly moved to a road shoulder or the like after removing the foreign matter contacting the vehicle 10.

The invention according to claim 3 is the invention according to claim 2, and further relates to a vehicle 10 as shown in FIGS.
Starting state detecting means 2 for detecting whether or not the vehicle is in a starting state
9 and the controller 33 operates the emergency brake operating means 1
6. With the emergency clutch operating means 17 and the emergency engine adjusting means 18 released, the starting state detecting means 29 determines that the vehicle 10 is not in the starting state within a predetermined time after the depression of the brake pedal is released. When the vehicle speed sensor 24 detects that the vehicle speed has become greater than zero and the vehicle speed sensor 24 detects that the vehicle speed has become greater than zero, the controller 33 controls the emergency brake operating unit 16 and the emergency clutch operating unit based on the detection outputs of the starting state detecting unit 29 and the vehicle speed sensor 24. 17 and the emergency engine adjusting means 18 are operated again.

In the automatic braking device release device according to the third aspect, after the vehicle 10 is emergency-stopped by the foreign object coming into contact with the vehicle 10 on a slope or the like, the foreign object is removed and a predetermined operation is performed. The controller 33 releases the emergency stop. At this time, if the driver releases the depression of the brake pedal in a state where the driver does not intend to start the vehicle 10, the vehicle 10 may start moving along the slope. Therefore, the controller 33 again operates the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18 to automatically brake the vehicle 10. As a result, the vehicle 10
Can be prevented from moving against the driver's will.

The invention according to a fourth aspect is the invention according to the third aspect, wherein, as shown in FIGS. 1 and 2, the starting state detecting means 29 detects the clutch sensor 27 and the shift position of the transmission 28. Shift sensor 31 for detecting, and accelerator sensor 3 for detecting whether or not the accelerator pedal is depressed
The clutch sensor 27 detects that the depression of the clutch pedal has been released, the shift sensor 31 detects that the transmission 21 has shifted to a position other than the neutral position, and the accelerator pedal has been depressed. Only when the accelerator sensor 32 detects that
Is configured to detect that the vehicle is in the starting state by the starting state detecting means 29.

In the automatic braking device releasing device according to the fourth aspect, the vehicle 10 is started by the clutch sensor 2.
7. Since it is detected by the respective detection outputs of the shift sensor 31 and the accelerator sensor 32, it is possible to reliably detect whether or not the vehicle 10 is in the starting state.

[0016]

Embodiments of the present invention will now be described with reference to the drawings. As shown in FIGS. 1 and 2, on both sides between the front wheel 11 and the rear wheel 12 of the tank truck 10,
A side guard 13 is attached for preventing foreign matter from being caught when the tank truck 10 turns left or right. A touch sensor 14 (FIG. 1) for detecting that a foreign substance has contacted the side guard 13 is attached to the side guard 13. As the touch sensor 14, it is preferable to use an infrared beam type, a light beam type, a resistive type, a capacitive type, or an acoustic type touch switch that detects an input with a stroke amount of zero or almost zero, but if it is in direct contact, Instead, a proximity switch that detects when the vehicle is very close may be used. In this specification, the proximity switch is also included in the touch sensor 14.

The tank truck 10 is provided with an automatic braking device and a release device therefor. As shown in detail in FIG. 1, the automatic control device operates the tank truck 1 by depressing a brake pedal (not shown) in addition to the touch sensor 14.
0, a braking device (not shown) for braking 0, emergency brake operating means 16 for operating the brake device regardless of whether or not a brake pedal (not shown) is depressed;
Emergency clutch actuating means 17 for disconnecting the clutch (not shown) regardless of whether or not the clutch pedal (not shown) is depressed, and the engine regardless of whether or not the accelerator pedal (not shown) is depressed. Emergency engine adjusting means 18 for setting the rotational speed of the engine 21 to an idling state.

Although not shown, the brake device is an air brake device that presses the brake shoe of the tank truck 10 against the brake drum with compressed air to brake the tank truck 10. Although not shown, the brake device is connected to an air tank via a main line, and a brake valve which is opened and closed by depressing and releasing a brake pedal is provided in the middle of the main line. Although not shown, the emergency brake operating means 16 has a bypass pipe bypassing the brake valve and having both ends connected to the main pipe, and a brake solenoid valve provided at a junction of the bypass pipe. When the brake solenoid valve is turned on, the compressed air in the air tank is supplied to the brake device via the bypass pipe, and when the brake solenoid valve is turned off, the compressed air in the air tank is supplied to the brake device via the brake valve. .

Although not shown, the emergency clutch operating means 17 is provided separately from a normal clutch connecting / disconnecting device for connecting / disconnecting the clutch by depressing and releasing the clutch pedal.
The emergency clutch actuating means 17 is attached to the clutch case 19 and connects / disconnects a clutch (not shown) housed in the clutch case 19 to a clutch cylinder (not shown). A clutch solenoid valve (not shown) for supplying and discharging air. When the clutch solenoid valve is turned on, the compressed air in the air tank is supplied to the clutch cylinder to disconnect the clutch. When the clutch solenoid valve is turned off, the compressed air in the clutch cylinder is discharged and the clutch is connected.

In this embodiment, the engine 21 is a diesel engine. The engine 21 is configured to operate by injecting fuel from a fuel injection pump into a cylinder of the engine 21. The fuel injection amount is adjusted by moving a control rack (not shown) provided on the fuel injection pump 22 from the idle rack position to the full rack position.
Is connected to the accelerator pedal via a control lever (not shown) and a link or cable (not shown). The emergency engine adjusting device 18 has a rack cylinder (not shown) provided near the control rack, and a rack solenoid valve for supplying and discharging compressed air in an air tank to the rack cylinder. When the rack solenoid valve is turned on, the compressed air in the air tank is supplied to the rack cylinder to forcibly move the control rack to the idle rack position, and when turned off, the compressed air in the rack cylinder is discharged and the control rack is discharged. It is configured to be movable according to the amount of depression of the accelerator pedal.

On the other hand, the release device of the automatic braking device detects a vehicle speed sensor 24 for detecting a vehicle speed, a brake sensor 26 for detecting whether or not a brake pedal is depressed, and detects whether or not a clutch pedal is depressed. And a clutch sensor 27. The vehicle speed sensor 24 is provided near the main shaft (not shown) of the transmission, the brake sensor 26 is provided near the brake pedal, and the clutch sensor 27 is provided near the clutch pedal.

The tank truck 10 is provided with a starting state detecting means 29 for detecting whether or not the tank truck 10 is in a starting state. This starting state detecting means 29
Is constituted by the clutch sensor 27, a shift sensor 31 for detecting a shift position of the transmission 28, and an accelerator sensor 32 for detecting whether or not an accelerator pedal is depressed. The shift sensor 31 is provided in the vicinity of a shift fork (not shown) of the transmission 28.
2 is provided near the accelerator pedal.

Each detection output of the touch sensor 14, the vehicle speed sensor 24, the brake sensor 26, the clutch sensor 27, and the starting state detecting means 29 is connected to a control input of a controller 33. The control output of the controller 33 is connected to the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18. Controller 3
The control output of No. 3 is connected to the first and second alarm means 41 and 42. These alarm means 41 and 42 are lamps or buzzers provided in the driver's seat. A timer 34 is provided in the controller 33, and a predetermined time is counted by the timer 34. The predetermined time is preferably 2 to 3 seconds.

The operation of the automatic braking device and the device for releasing the automatic braking device will now be described with reference to FIGS. Side guard 13 when tank lorry 10 turns right and left
When a foreign object contacts the side guard 13, the touch sensor 14 detects that the foreign object has contacted the side guard 13. Controller 3
3 operates the emergency brake operating means 16 based on the detection output of the touch sensor 14 irrespective of whether or not the brake pedal is depressed. As a result, the brake solenoid valve is turned on, the compressed air in the air tank is supplied to the brake device via the bypass pipe, and the brake shoe is pressed against the brake drum to brake the tank truck 10.

At the same time, the controller 33 operates the emergency clutch operating means 17 irrespective of whether or not the clutch pedal is depressed, and operates the emergency engine adjusting means 18 irrespective of whether or not the accelerator pedal is depressed.
When the emergency clutch operating means 17 is operated, the clutch solenoid valve is turned on, and the compressed air in the air tank is supplied to the clutch cylinder to disengage the clutch. When the emergency engine adjusting means 18 is operated, the solenoid valve for the rack is turned on, the compressed air in the air tank is supplied to the cylinder for the rack, and the control rack is forcibly moved to the idle rack position. The speed becomes idle. As a result, the tank truck 10 can be emergency stopped without stopping the engine 21. In addition, based on the detection output of the touch sensor 14, the controller 33 activates the first alarm means 41 to issue an alarm to the driver.

When the tank lorry 10 is stopped as described above, the driver knows that foreign matter has come into contact with the tank lorry 10 by the alarm issued by the first alarm means 41. After removing
The user again gets on the tank truck 10 and depresses both the brake pedal and the clutch pedal. At this time, the vehicle speed sensor 24 detects that the vehicle 10 is stopped, the touch sensor 14 detects that foreign matter has been removed, and the brake sensor 26 detects that both the brake pedal and the clutch pedal are depressed. The controller 33 cancels the operations of the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18 based on these detection outputs. As a result, the driver can restart the tank truck 10 and quickly move to the road shoulder or the like.

On the other hand, when the tank lorry 10 is emergency stopped on a hill, not on a flat road, if the driver releases the brake pedal without intention to start the tank lorry 10, the tank lorry will move along the hill. 10
May start moving. Therefore, the controller 33 counts by the timer 34 for 2 to 3 seconds from when the brake pedal is released, and when the vehicle speed sensor 24 detects that the tank truck 10 has started moving within this time, the controller 33 outputs this detection output. Then, the emergency brake operating means 16, the emergency clutch operating means 17, and the emergency engine adjusting means 18 are operated again to brake the tank truck 10. As a result, it is possible to prevent the tank truck 10 from starting to move against the driver's intention. Further, the controller 33 activates the second alarm means 42 to notify the driving car that the emergency brake actuation means 16 and the like have been actuated again because the tank truck 10 has begun to move.

However, if the starting state detecting means 29 detects the starting state of the tank truck 10 within a few seconds after the brake pedal is released, the clutch sensor 27 detects that the clutch pedal has been released. Is detected, the shift sensor 31 detects that the transmission 28 has been shifted to a position other than the neutral position, and the accelerator sensor 32 detects that the accelerator pedal has been depressed. Even if the tank truck 10 starts moving, the emergency brake operating means 16 and the like are not operated again. As a result, the tank truck 10 can be quickly moved to a road shoulder or the like.

In this embodiment, the vehicle is a tank truck, but it may be a truck, a construction vehicle, or another vehicle. Further, in this embodiment, the touch sensor is mounted on the side guard, but may be mounted on a bumper or other surface of the vehicle. In this embodiment, an air brake device is described as the brake device, but an oil brake device may be used. Further, in this embodiment, a diesel engine is described as an engine, but a gasoline engine may be used.

[0030]

As described above, according to the present invention, when the touch sensor detects that a foreign object has contacted the vehicle,
The controller automatically activates the emergency brake actuation means to operate the brake device to brake the vehicle regardless of whether the brake pedal is depressed, and at the same time, the controller determines whether the clutch pedal is depressed. Regardless of this, the emergency clutch operating means is operated to disengage the clutch, and further, regardless of whether or not the accelerator pedal is depressed, the emergency engine adjusting means is operated to bring the engine speed into an idling state. As a result, the vehicle can be braked without stopping the engine. After the vehicle comes to an emergency stop due to contact with foreign matter, the vehicle speed sensor detects that the vehicle is in a stopped state, the touch sensor detects that the foreign matter has been removed, and the brake pedal and the clutch pedal. When the brake sensor and the clutch sensor respectively detect that both are depressed, the controller releases the operation of the emergency brake operating means, the emergency clutch operating means, and the emergency engine adjusting means. As a result,
After removing the foreign matter in contact with the vehicle, the vehicle can be moved to the road shoulder or the like immediately.

When the emergency stop is released on a slope or the like, if the driver releases the brake pedal without intention of starting the vehicle, the vehicle may start moving along the slope. At this time, since the starting state detecting means detects that the vehicle is not in the starting state and the vehicle speed sensor detects that the vehicle speed has become greater than zero, the controller again operates the emergency brake operating means, the emergency clutch operating means, and the emergency engine adjustment. Activate the means to automatically brake the vehicle. As a result, it is possible to prevent the vehicle from moving against the driver's will. Further, the starting state detecting means includes a clutch sensor, a shift sensor, and an accelerator sensor,
When the clutch sensor detects that the clutch pedal has been depressed, the shift sensor detects that the transmission has been shifted to a position other than the neutral position, and the accelerator sensor detects that the accelerator pedal has been depressed. Only when the start state detecting means detects that the vehicle is in the start state, it is possible to reliably detect whether the vehicle is in the start state.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an automatic braking device and a release device thereof according to an embodiment of the present invention.

FIG. 2 is a side view of a tank truck including a side guard to which a touch sensor is attached.

FIG. 3 is a flowchart showing the first half operation of the device.

FIG. 4 is a flowchart showing the latter half operation of the device.

[Explanation of symbols]

 Reference Signs List 10 Tank truck (vehicle) 14 Touch sensor 16 Emergency brake operating means 17 Emergency clutch operating means 18 Emergency engine adjusting means 21 Engine 24 Vehicle speed sensor 26 Brake sensor 27 Clutch sensor 28 Transmission 29 Start state detecting means 31 Shift sensor 32 Accel sensor 33 controller

Claims (4)

[Claims] The vehicle (10) is operated by depressing a brake pedal.
A braking device for braking the brake device; and an emergency brake operating means (16) for operating the brake device regardless of whether or not the brake pedal is depressed.
Emergency clutch actuating means (17) for disengaging the clutch regardless of whether the clutch pedal is depressed, and turning the engine (21) idling state regardless of whether the accelerator pedal is depressed Emergency engine adjusting means (18), a touch sensor (14) for detecting whether or not foreign matter has contacted the vehicle (10), and the touch sensor (14) has contacted the foreign matter with the vehicle (10). The emergency brake operating means (16), the emergency clutch operating means based on the detection output.
(17) An automatic braking device comprising: a controller (33) for operating the emergency engine adjusting means (18). 2. The automatic braking device according to claim 1, further comprising: a vehicle speed sensor for detecting a speed of the vehicle; a brake sensor for detecting whether or not a brake pedal is depressed; A clutch sensor (27) for detecting whether or not the vehicle has been depressed, wherein the vehicle speed sensor (2) indicates that the vehicle (10) is in a stopped state.
4) detects, the touch sensor (14) detects that foreign matter contacting the vehicle has been removed, and the brake sensor (26) indicates that both the brake pedal and the clutch pedal are depressed. And when the clutch sensor (27) detects, the controller (33), the sensor (24,14,2)
6, 27) based on the detection output
6) An automatic braking device release device configured to release the operations of the emergency clutch operating means (17) and the emergency engine adjusting means (18). 3. A start state detecting means (29) for detecting whether the vehicle (10) is in a start state, and an emergency brake operating means (16) and an emergency clutch operating means (17) are provided by a controller (33). In a state where the operation of the emergency engine adjusting means (18) is released, the starting state detecting means (29) determines that the vehicle (10) is not in the starting state within a predetermined time after the depression of the brake pedal is released. When the vehicle speed sensor (24) detects that the vehicle speed has become greater than zero and the vehicle speed sensor (24) detects, the controller (33) outputs the detection output of the start state detection means (29) and the vehicle speed sensor (24). 3. The automatic braking device release device according to claim 2, wherein the emergency brake operating means (16), the emergency clutch operating means (17) and the emergency engine adjusting means (18) are operated again based on the following. 4. The starting state detecting means (29) is a clutch sensor.
(27), a shift sensor (31) for detecting the shift position of the transmission (28), and an accelerator sensor (32) for detecting whether or not the accelerator pedal is depressed. The clutch sensor (27) detects that the clutch is released, the shift sensor (31) detects that the transmission (28) is shifted to a position other than the neutral position, and the accelerator pedal is depressed. Only when the accelerator sensor (32) detects
4. The release device for an automatic braking device according to claim 3, wherein the starting state detecting means (29) detects that the vehicle is in a starting state.