JP2001347910A - Roll over preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure safety by displaying and warning the danger state of roll over in the traveling state and automatically reducing the traveling speed in the danger state. SOLUTION: This roll over preventing device is constituted of a roll angle detecting means 11 of a vehicle body 8, a wheel base selection switch 47 of the vehicle, a steering gear ratio selection switch 48, a steering angle sensor 51 of a steering wheel, a vehicle speed sensor 53, a roll indicator 18 for displaying the roll state of the vehicle body in the form of a drawing, an alarm sound buzzer 19, a buzzer confirming switch 49, and a controller 15 for transmitting a roll danger warning information to the roll indicator and the alarm sound buzzer by calculating the roll state of the vehicle body on the basis of data input from the wheel base selection switch and the steering gear ratio selection switch and signals from the roll angle detecting means, the vehicle speed sensor and the steering angle sensor, and for transmitting a signal for reducing the vehicle speed to a vehicle speed reducing means in the danger state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bus, a truck,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rollover prevention device for preventing rollover of a vehicle such as a tractor-trailer coupled vehicle, and more particularly to a rollover prevention device for preventing rollover during traveling.

[0002]

2. Description of the Related Art There are various methods for preventing rollover (lateral overturn) of a vehicle. For example, the position of the center of gravity of a crane truck, an aerial work vehicle, a ladder truck, etc., mainly working in a stopped state, is high. For vehicles that move at the center of gravity, the suspension springs can be killed to increase the roll rigidity,
There is known a method of increasing the distance between ground support points by using an outrigger.

As an apparatus for preventing rollover in a state including running, for example, Japanese Patent Application Laid-Open No. Hei 5-96985 discloses a tilt display apparatus for automobiles. This device shown in FIG. 15 detects a roll angle X and a pitch angle Y of a vehicle and a bed by tilt detection sensors A1a and A1b, respectively, calculates a tilt state by a control device A2, and displays and displays an alarm on a liquid crystal panel A3. A4, A5, and A6 are displayed or alarmed so that the driver can recognize.

[0004] Since this method is intended for stopping work of a dump truck or the like or traveling at extremely low speed, there is no measure against rollover caused by lateral acceleration during traveling. Further, the roll and pitch angle detecting means and alarm method are not specifically shown. Furthermore, there is no countermeasure or device in consideration of the vehicle weight and the height of the load center. And the like.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and displays and warns a danger of rollover in a running state, and provides a danger of a predetermined threshold value. It is an object of the present invention to provide a rollover prevention device that automatically lowers a traveling speed in a state to ensure safety.

[0006]

According to the rollover prevention device of the present invention, in a rollover prevention device for preventing a roll of a vehicle from overturning, a roll angle detection means for detecting a roll angle of a vehicle body and a wheel base of the vehicle are selected. A wheel base selection switch to be input, a steering gear ratio selection switch to select and input a steering gear ratio, a steering angle sensor for detecting a steering wheel steering angle, a vehicle speed sensor for detecting a vehicle speed, and a roll state of the vehicle body in a pictorial diagram. A roll indicator to be displayed, a buzzer alarm, a buzzer confirmation switch to check the operation of the buzzer alarm, data input from the wheel base selection switch and the steering gear ratio selection switch, roll angle detection means, a vehicle speed sensor, and steering. Calculates the roll state of the car body based on the signal from the angle sensor Wherein in the dangerous state sends a roll hazard warning information to the roll indicator and horn buzzer control apparatus for transmitting a signal to decelerate the vehicle speed to the vehicle speed reduction means, and a city Te.

As described above, the roll characteristics of the vehicle body can be automatically measured and obtained by calculation, the rollover warning angle can be accurately set, and the danger can be warned by a pictorial display and a warning sound of the roll state. Furthermore, if the vehicle is in a dangerous state, the vehicle speed can be reduced and safety can be ensured by operating the deceleration means such as engine output reduction, auxiliary brake, service brake and the like.

The roll indicator is configured so that the displayed picture guides the green zone when the roll angle is in a safe state, the yellow zone in a warning state, and the red zone in a dangerous state.

The roll indicator displays the primary warning in yellow and the secondary danger warning in red, as described above, and emits corresponding warning sounds. In addition, in a state where the vehicle rolls easily under the loading condition, a green zone of a safety sign is widely set so as to be sensitive to the roll movement of the vehicle, and a warning is issued.

Another second rollover prevention device is a rollover prevention device for preventing a vehicle from overturning, wherein a roll angle detection means for detecting a roll angle of the vehicle body and a lateral acceleration of the vehicle body are detected. A lateral G sensor, a roll indicator that displays the roll state of the vehicle body in a pictorial diagram,
An alarm buzzer, a buzzer confirmation switch for confirming the operation of the alarm buzzer, a roll state of the vehicle body is calculated based on signals from the roll angle detecting means and a lateral G sensor, and a roll is transmitted to the roll indicator and the alarm buzzer. A control device that transmits danger warning information and transmits a signal for reducing the vehicle speed to the vehicle deceleration means in a danger state.

As described above, the roll characteristics of the vehicle body can be automatically measured and calculated, the rollover warning angle can be accurately set, and the roll state can be displayed as a picture and a warning sound can be used to warn of danger. Furthermore, if the vehicle is in a dangerous state, the vehicle speed can be reduced and safety can be ensured by operating the deceleration means such as engine output reduction, auxiliary brake, service brake and the like. Further, by installing the lateral G sensor, it is possible to directly detect the lateral acceleration to easily measure and calculate the roll characteristics easily, and to omit the input of vehicle specifications, the installation of a steering angle sensor, and the installation of a vehicle speed sensor.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rollover prevention device according to the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a rollover prevention device 1 according to a first embodiment in which the device is mounted on a rear one-axis track as an example.

The ladder frame 10 of the vehicle body 8 is suspended on the rear axle tube 5 by a rear right spring 9R and a rear left spring 9L, which are suspensions. And a frame 10 of the vehicle body 8. Reference numeral 7L indicates a rear left wheel, and 7R indicates a rear right wheel.

The vehicle height sensor 11 is a pair of a right vehicle height sensor 11R and a left vehicle height sensor 11L. The right vehicle height sensor 11R is connected to the upper right portion of the rear axle tube 5 and the right side frame 10R of the frame 10. , The left vehicle height sensor 11L is the rear axle tube 5
And the left side frame 10 </ b> L of the frame 10. Then, the inclination of the vehicle body 8 can be obtained as a roll angle from the difference between the mounting width B between the left and right vehicle height sensors 11R and 11L and the compression difference between the left and right rear springs 9L and 9R. The left and right vehicle height sensors 11L and 11R are connected to the control device 15 by signal lines 11Ls and 11Rs.

The vehicle height sensor 11 may be any of known stroke sensors, laser displacement sensors, rotation angle sensors, and the like.

A steering angle sensor 51 detects a steering angle of a steering wheel, and calculates a lateral acceleration of the vehicle body based on input data from a steering wheel selection switch 47 and a wheel base selection switch 48 described later and a vehicle speed. Mounted on the wheel or steering axle. And it is connected to the control device 15 by a signal line 51s.

The vehicle speed sensor 53 is attached to a power transmission system, for example, a transmission for detecting the traveling speed of the vehicle, and is connected to the control device 15 through a signal line 53s.

The wheel base selection switch 47, the steering gear ratio selection switch 48, and the alarm buzzer 19
, Buzzer confirmation switch 49 and roll indicator 1
Reference numeral 8 is mounted at a position where it can be easily operated or confirmed by a driver in the cab.

A wheel base selection switch 47 is a position for selecting and determining a wheel base length, for example, 3 m.
It is configured to select and set any one of the positions where the range 47w between ９9 m is finely divided with the knob 48K. And it is connected to the control device 15 by a signal line 47s.

The steering gear ratio selection switch 48 is
Position for selecting and determining the ratio of the steering angle between the steering wheel and the steering wheel (multiplied angle of rotation of the steering wheel with respect to the steering wheel rotation angle), for example, 20 to
Any of the positions where the range 48r between 30 is finely divided is selected and set by the knob 48K. And it is connected to the control device 15 by a signal line 47s.

The alarm buzzer 19 operates in conjunction with a roll indicator 18 to be described later, and changes the sound quality and volume in a warning state and a danger state to give an alarm. Control line 1
Connected to the control device 15 at 9s.

The buzzer sound confirmation switch 49 is for confirming the sound quality and volume of the alarm buzzer 19 at the start of the work and at any time, and is of a push button type, and is connected to the control device 15 by a signal line 49s.

The roll indicator 18 displays a pictorial display, for example, on a liquid crystal display, and indicates the inclination of the vehicle body. The vehicle schematic diagram 8G in the center rotates according to the roll angle of the vehicle body 8 to form an annular shape. It is configured to guide the danger display area for each color, and is connected to the control device 15 by a control line 18s.

FIGS. 7 to 10 show the roll indicator 18.
Represents the display function. FIG. 7 shows the left and right green zones 29 of the annular color danger display area in an empty state without loading.
L, 29R (hereinafter, L represents left and R represents right), warning yellow zones 28L, 28R, and dangerous red areas 27u, 27
At d, the position of the pointer 8Gb of the rotating vehicle schematic diagram 8G is clearly indicated around the vehicle schematic diagram 8G. The angles and ranges to be displayed are determined by calculating the roll index described later, and the roll angle is increased to make it easier to see.

FIG. 8 shows a case of a half-loaded state. In the half-loaded state, the roll angle leading to rollover is larger than in the empty state, so that the safe green zones 29La and 29Ra are displayed wider than in the empty state of FIG.
FIG. 9 shows a constant load state, that is, a maximum load state. In the constant load state, the roll angle leading to rollover is larger than that in the half load state, so that the green zones 29Lb and 49Rb are further widened.

FIG. 10 shows an operation display example of the vehicle body roll angle in the loaded state shown in FIG.
Rb and 28Lb are shown. 7 to 10 show the display of the roll indicator 18 in a typical loaded state. The actual loading condition is between the empty vehicle and the maximum loading obtained from the actual traveling of the vehicle, and the size of each display zone is determined accordingly.

When the vehicle body roll angle exceeds the dangerous roll angle θ1, for example, 3 degrees, the vehicle deceleration means 20 lowers the engine output or activates the braking device to reduce the vehicle speed.
The roll angle is reduced to avoid danger from rollover. It is connected to the control device 15 by a control line 20s.

The control device 15 includes a left and right vehicle height sensor 11L.
, 11R, the steering angle sensor 51, the vehicle speed sensor 53, the wheel base selection switch 47, and the steering gear ratio selection switch 48, and calculates the vehicle body roll characteristics (hereinafter referred to as a roll index) and the danger. Calculate the status and roll indicator 1
8. It has a function to instruct control to the alarm buzzer 19 and the vehicle deceleration means.

Reference numeral Cp in FIG. 1 denotes a semi-trailer connecting coupler, which receives a roll moment input together with a load from the connected trailer.

FIG. 3 shows a block diagram centering on the control device 15 of FIG. The control device 15 includes a roll angle calculation unit 15a for calculating a roll angle, a calculation unit 15p for calculating roll characteristics of a vehicle (described later as a roll index) and roll information, an emergency determination unit 15b for determining roll information, and an indicator output calculation. It comprises a unit 15c, an emergency lamp output unit 15d, a warning sound output unit 15e, and a speed reduction unit control unit 15f.

A right vehicle height sensor 11R, a left vehicle height sensor 11L, a vehicle speed sensor 53, and a steering angle sensor 51 are connected to the control device 15 as a driving operation signal transmitting device. A wheel base selection switch 47 and a steering gear ratio selection switch 48 are connected to the control device as a vehicle specification fixed data transmission device.

The roll angle calculator 15a calculates the roll angle based on the signals from the left and right vehicle height sensors 11L and 11R and the mounting width distance B between the two sensors, and transmits the calculated roll angle to the calculator 15p and the indicator output unit 15c. It is configured as follows.

The calculation unit 15p calculates the roll characteristics of the vehicle body 8 from the calculated roll angle, the traveling speed from each of the devices, the steering angle, the wheelbase size, and the steering gear ratio. It is configured to calculate information.

FIGS. 11 to 13 show how to determine the roll characteristics of the vehicle body and how to set the roll warning angle. FIG.
Represents the roll characteristic of the vehicle body, with the vertical axis representing the roll angle θ, the horizontal axis representing the lateral direction G (acceleration) applied to the vehicle, and the vehicle-mounted conditions as parameters. For example, even in the same vehicle, the line M1 in the empty state is hard to roll, and the line M3 in the maximum loaded state is easy to roll.

This characteristic is expressed by [roll angle θ / lateral acceleration G =
When the roll index is defined, a vehicle body having a large roll index has a characteristic of easily rolling. Then, in the actual vehicle, the vehicle specification data of the wheelbase and the steering gear ratio input to the control unit 15 and the signal from the steering angle sensor 51 are known as (Aq.2) and (Eq. Eq.1) to the turning radius R of the front outer wheel
The center-of-gravity position turning radius Rc is corrected, and the center-of-gravity position turning radius Rc and the vehicle speed sensor 5 are calculated.
The lateral acceleration G is calculated based on the running speed from Step 3.

The steering angles α and β at this time are values obtained by dividing the steering angle of the steering wheel by the steering gear ratio. Since the roll index is usually a non-linear curve, it is created and used from actual measurement results at a plurality of points.

FIG. 12 is a control diagram in which the vertical axis is calculated by calculating a roll angle threshold value for performing rollover alarm and control and the horizontal axis is calculated. The roll angle θ0 line of the primary alarm level in the drawing is the yellow zone of the roll indicator 18, and the roll angle θ1 of the secondary alarm level is the red zone. The secondary alarm level setting may be a certain degree increase of the primary level, for example, an increase of one degree, or a 50% increase of the primary level. In this way, the warning display range is set wide in a vehicle body having a large roll index.

FIG. 13 shows FIG. 12 with specific control values. In the specific roll index, the primary alarm is set to, for example, 2 degrees, and the secondary alarm is set to, for example, a roll angle of 3 degrees. Things. It is appropriate that these roll angles have a maximum of 4 to 5 degrees.

The emergency judging unit 15b is provided with the arithmetic unit 1
The roll information from 5p is determined, and an alarm and a control instruction are issued.

The indicator output operation section 15c is provided with an emergency lamp output section 15d for the roll indicator 18.
Is provided to the emergency lamp 39, the audible alarm output unit 15e to the audible alarm buzzer 19, and the deceleration means control unit 15f to the deceleration means control unit 20, respectively.

The operation of the rollover prevention device 1 having the above configuration will be described with reference to the flowchart of FIG.

In step S1, the wheel base is read from the wheel base selection switch 47. Step S2
Then, the steering gear ratio is read from the steering gear ratio selection switch. Steps S1 and S2 read what has been manually selected and input.

In step S3, the steering angle during traveling is read by the signal of the steering angle sensor 51. In step S4, the running speed is read by the signal of the vehicle speed sensor 53. Step S
In 5, the turning radius Rc is calculated. In step S6,
The lateral acceleration Gc is calculated.

In step S7, the vehicle height HR on the right side of the vehicle body is read. In step S7, the vehicle height HL on the left side of the vehicle body is read. In step S9, the roll angle θ is calculated from the vehicle heights HR and HL.
Is calculated.

In step S10, a roll index (= roll angle / lateral acceleration) is calculated. In step S11, a primary warning roll angle θ0 is calculated. In step S12, the secondary warning roll angle θ1 is calculated.

In step S13, a primary alarm display zone (yellow zone) of the roll indicator 18 is set. In step S14, the secondary alarm display zone (red zone) of the roll indicator 18 is set.

In step S15, the roll status is displayed on the roll indicator 18. In step S16, it is calculated whether or not the absolute value of the roll angle θ (for the left and right rolls) exceeds the primary warning roll angle θ0. NO
If it does not exceed, it returns to step S3
Return to continue driving. If YES, the process proceeds to step S17.

In step S17, a first alarm buzzer (small sound) is generated. At the same time, the emergency lamp 39 is turned on or blinks yellow in step S18. In step S19, it is calculated whether or not the absolute value of the roll angle θ (for the left and right rolls) exceeds the secondary warning roll angle θ1. If the answer is NO, the process returns to step S3, and the operation is continued. If YES, the process proceeds to step S20.

In step S20, a second buzzer (loud sound) is generated. At the same time, the emergency lamp 39 is lit in red or blinks in step S21. At the same time, in step S22, the vehicle speed is reduced by the vehicle deceleration means 20, the roll angle is reduced, and the rollover is returned to the safe side. Then, the process returns to the return, and substantially returns to step S3 to continue the operation.

As described above, by inputting vehicle specifications and mounting relatively simple sensors, the danger of rollover is warned and alerted, and in a dangerous state, the traveling speed is reduced and the vehicle is automatically avoided. Let it.

FIG. 2 shows another rollover prevention device 2 which differs from the embodiment of FIG. 1 in the means for obtaining the lateral acceleration Gc applied to the vehicle body. The parts different from FIG. 1 will be mainly described.

In FIG. 2, a lateral G sensor 55 for detecting the lateral acceleration of the vehicle body is attached to the vehicle body 8, for example, and is connected to the control device 15B by a signal line 55s.
Other left and right vehicle height sensors 11L, 11R, roll indicator 18, audible alarm buzzer 19, buzzer confirmation switch 49
And the vehicle deceleration means 20 is exactly the same as in FIG. Except for the wheel base selection switch 47 and the steering gear ratio selection switch 48 in FIG. 1, the state is the same as that in which the lateral G sensor 55 is added.

FIG. 4 shows a block configuration centering on the control device 15B of FIG. The control device 15B includes a roll angle calculation unit 15a that calculates a roll angle, a calculation unit 15pB that calculates a roll index of the vehicle (described in the rollover prevention device 1) and roll information, an emergency determination unit 15bB that determines roll information, and an indicator. Output operation unit 15
It comprises a cB, an emergency lamp output unit 15d, a audible alarm output unit 15e, and a speed reduction unit control unit 15f.

A right-vehicle height sensor 11R, a left-vehicle height sensor 11L, and a lateral G sensor 55 are connected to the control device 15B as driving operation signal transmitting devices. Roll angle calculator 15
“a” is configured to calculate the roll angle based on the signals from the left and right vehicle height sensors 11L and 11R and the mounting width distance B of both sensors, and transmit the calculated roll angle to the calculation unit 15pB and the indicator output unit 15c.

The calculating unit 15pB calculates the calculated roll angle,
The lateral acceleration from the lateral G sensor 55 and the roll index of the vehicle body 8 are calculated, and the roll information is calculated.

The description of the roll index [roll angle θ / lateral acceleration G = roll index] and the method of displaying the roll alarm are as described for the rollover prevention device 1. Since the roll index is usually a non-linear curve, it is created and used from actual measurement results at a plurality of points.

The emergency judgment section 15bB judges the roll information from the calculation section 15pB, and issues a warning and a control instruction. The indicator output operation unit 15cB is provided to the roll indicator 18, the emergency lamp output unit 15d is provided to the emergency lamp 39,
The audible alarm output unit 15e gives an operation instruction to the audible alarm buzzer 19, and the speed reduction unit control unit 15f gives an operation instruction to the speed reduction unit control unit 20, respectively.

The operation of the rollover prevention device 2 having the above configuration will be described with reference to the flowchart of FIG. A step S31 reads the lateral Gc applied to the vehicle center of gravity. In step S32, the vehicle height HR on the right side of the vehicle body is read. In step S33, the vehicle height HL on the left side of the vehicle body is read. Step S
At 34, the roll angle θ is calculated from the vehicle heights HR and HL.

In step S35, a roll index is calculated. In step S36, a primary alarm roll angle θ0 is calculated. In step S37, the secondary warning roll angle θ1
Is calculated.

In step S38, a primary alarm display zone (yellow zone) of the roll indicator 18 is set. In step S39, a secondary alarm display zone (red zone) of the roll indicator 18 is set.

In step S40, the roll status is displayed on the roll indicator 18. In step S41, it is calculated whether or not the absolute value of the roll angle θ (for the left and right rolls) exceeds the primary warning roll angle θ0. NO
If it does not exceed, it returns to step S3
Return to Step 1 and continue driving. If yes,
Go to step S42.

In step S427, a primary alarm buzzer (small sound) is generated. At the same time, the emergency lamp 39 is turned on or blinks yellow in step S43. In step S44, it is calculated whether the absolute value of the roll angle θ (for the left and right rolls) exceeds the secondary warning roll angle θ1. If the answer is NO, the process returns to step S31 and the operation is continued. YES
If it exceeds, go to step S45.

In step S45, a secondary alarm buzzer (loud sound) is generated. At the same time, the emergency lamp 46 is lit in red or blinks in step S21. At the same time, in step S47, the vehicle speed is reduced by the vehicle deceleration means 20, the roll angle is reduced, and the rollover is returned to the safe side. Then, the process returns to the return, and substantially returns to the step S31 to continue the operation.

As described above, when the lateral G sensor 55 is mounted on the vehicle body, the rollover information can be simply analyzed by the operation of the rollover prevention device 1, and the danger of the rollover is warned to pay attention. In the danger state, the running speed is reduced and the vehicle is automatically avoided.

[0065]

The effects of the present invention are listed below. (1) With the rollover prevention device of the present invention, a danger is warned by a pictorial display and a warning sound of the rollover state of the own vehicle. Further, if the vehicle is in a dangerous state, the vehicle speed is reduced by activating the brake deceleration means such as the engine output reduction, the auxiliary brake, and the service brake, thereby ensuring safety. (2) Since the rollability of the vehicle body during traveling is automatically measured and calculated without inputting the load capacity and the height of the center of gravity, and the rollover warning angle is set, accurate control can be performed. (3) The roll indicator displays the primary warning in yellow and the secondary danger warning in red, and emits corresponding warning sounds. Since the roll angle leading to rollover increases as the load capacity increases, the green zone increases. (4) Since the driver can set the primary warning and the secondary danger warning based on the roll angle, a safe warning suitable for the entity can be provided. (5) By installing the buzzer confirmation switch, the sound quality and volume of the alarm buzzer can be confirmed in advance at the start of work, etc., so that the warning can be clearly distinguished from other warning sounds. (6) The present invention can be applied not only to a single vehicle but also to a connected vehicle because the roll moment of the trailer is received on the tractor side. (7) According to the second aspect of the present invention in which the lateral acceleration is directly detected by the lateral G sensor, a simple configuration in which the input of the wheel base and the steering gear ratio is not required and the installation of the steering angle sensor and the vehicle speed sensor is omitted. Can be

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a rollover prevention device 1 of the present invention.

FIG. 2 is a configuration diagram showing another rollover prevention device 2 of the present invention.

FIG. 3 is a block diagram of FIG. 1;

FIG. 4 is a block diagram of FIG. 2;

FIG. 5 is a flowchart showing the operation of FIGS. 1 and 3;

FIG. 6 is a flowchart showing the operation of FIGS. 2 and 4;

FIG. 7 is a diagram showing a state of the pictorial display device used in FIGS. 1 and 2 when there is no loading.

FIG. 8 is a diagram showing a state of the picture display device used in FIGS. 1 and 2 in the case of half loading.

FIG. 9 is a diagram showing a state of the pictorial display device used in FIGS. 1 and 2 in the case of constant loading.

FIG. 10 is an operation example diagram of the pictorial display device showing a yellow zone danger warning in the constant loading state of FIG. 9;

FIG. 11 is a diagram illustrating a relationship between a roll angle and a lateral acceleration with a loading state as a parameter.

FIG. 12 is a diagram showing a relationship between a rollover warning angle (primary and secondary) setting and a roll index.

FIG. 13 is a diagram showing a specific relationship of setting a rollover warning angle (primary and secondary).

FIG. 14 is a diagram showing Ackerman's formula showing vehicle specifications and turning radii.

FIG. 15 shows a conventional rollover prevention device.

[Explanation of symbols]

 Cp ··· Coupler 1,2 ··· Rollover prevention device 5 ··· Rear axle tube 7R ··· Rear right wheel 7L ··· Rear left wheel 8 ··· Body 9R ··· Rear right spring 9L ··· Rear left spring 10・ ・ ・ Frame 10R ・ ・ Right side frame 10L ・ ・ Left side frame 11 ・ ・ ・ Vehicle height sensor 11R ・ ・ Right vehicle height sensor 11L ・ ・ Left vehicle height sensor 15 ・ ・ ・ Control device 15a ・ ・ Roll angle calculation unit 15b Emergency judgment unit 15c Indicator output operation unit 15d Emergency lamp output unit 15e Alarm sound output unit 15f Speed reduction unit control unit 15p Operation unit 18 Roll indicator 19 -Audible alarm buzzer 20-Vehicle deceleration means 27u, 27d-Red (red) zone 28R, 28L-Yellow (yellow) zone 29R, 29L-Green ( ) Zone 39 ... emergency lamp 47 ... wheel base selection switch 47K ·· knob 48 ... steering gear selection switch 48K ·· knob 49 ... buzzer sound confirmation switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60K 28/14 B60K 28/14 35/00 35/00 Z F02D 29/02 311 F02D 29/02 311Z G01C 9 / 06 G01C 9/06 E (72) Inventor Masaru Yamashita 1-chome, 1-chome, Ageo-shi, Saitama F-term in Nissan Diesel Industry Co., Ltd. (reference) 3D037 FA21 FA23 FA26 FA27 FB01 FB10 3D044 BA14 BA21 BA27 BB01 BD01 3G093 AA01 BA04 CB09 DB00 DB05 EA01 EB04

Claims (3)

[Claims] In a rollover prevention device for preventing a roll of a vehicle from overturning, a roll angle detecting means for detecting a roll angle of a vehicle body, a wheel base selection switch for selecting and inputting a wheel base of the vehicle, and a steering gear ratio are selected. A steering gear ratio selection switch to be input, a steering angle sensor for detecting a steering wheel steering angle,
A vehicle speed sensor that detects the vehicle speed, a roll indicator that displays the roll state of the vehicle body in a pictorial diagram, a horn buzzer,
A buzzer confirmation switch for confirming the operation of the audible alarm buzzer, a roll of the vehicle body based on data input from the wheel base selection switch and the steering gear ratio selection switch and signals from the roll angle detection means, the vehicle speed sensor and the steering angle sensor. A control device that calculates a state and transmits roll danger warning information to the roll indicator and the audible buzzer, and transmits a signal to reduce the vehicle speed to the vehicle deceleration means in the danger state. Rollover prevention device. 2. The roll indicator according to claim 1, wherein the displayed picture guides the green zone when the roll angle is in a safe state, the yellow zone in an alarm state, and the red zone in a danger state. 1. Rollover prevention device. 3. A rollover prevention device for preventing rollover of a vehicle, a roll angle detecting means for detecting a roll angle of the vehicle body, a lateral G sensor for detecting a lateral acceleration of the vehicle body, and a roll state of the vehicle body. A roll indicator, a buzzer alarm, a buzzer confirmation switch for checking the operation of the buzzer alarm, and a roll state of the vehicle body calculated based on signals from the roll angle detection means and a lateral G sensor. A control device that transmits roll danger warning information to the indicator and the audible buzzer, and that transmits a signal to reduce the vehicle speed to the vehicle deceleration means in a dangerous state.