JP2603112Y2 - Braking force display - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking force display device for informing a following vehicle of a braking state of a vehicle equipped with a retarder.

[0002]

2. Description of the Related Art For example, a retarder is used as an auxiliary brake.
It is mounted on the vehicle separately from the main brake . This retarder
When the braking force is applied to the mounted vehicle, (a) the retarder
Use only (weak braking force against main brake),
(B) Use of main brake only, (c) Main brake + Rita
Use of a radar (the braking force becomes stronger and the braking distance becomes shorter)
There are three embodiments. In vehicles equipped with this retarder
The main brake is released when the driver depresses the brake pedal.
When the brakes are activated, the brakes
The following lights indicate that the lamp is on and strong braking is applied.
Will be informed. However, when decelerating the vehicle on a downhill etc.
In this case, only the retarder is used (equivalent to (a) above)
This is notified to the following vehicle by an appropriate braking force display device,
It is necessary to prevent ruggedness.

[0003] Here, the braking force of the retarder is as described above.
Weaker than the main brake,
There is less need to call attention to follow-on vehicles
Blinking in the low-speed range,
It encourages extra attention and may even be an unnecessary display.
Therefore, when the vehicle is decelerated, when the vehicle speed exceeds a predetermined value,
May cause the brake lights to flash.
it can.

[0004]

[Problem to be solved by the invention] However, the vehicle is decelerated.
To inform the following vehicle of the blinking of the brake lamp
You can do it, but apply the retarder during acceleration (after acceleration)
If the vehicle slows down, notify the following vehicle.
And there is a danger of rear-end collision.

The present invention has been made to solve the above-mentioned problems.
The purpose is to accelerate at low speeds
(After acceleration) the retarder works and the vehicle slows down.
Also inform the following vehicle to prevent danger of rear-end collision
It is an object of the present invention to provide a braking force display device that can perform the braking operation.

[0006]

According to the present invention, a brake lamp provided on a rear surface of a vehicle is turned on when a main brake is operated.
A brake switch, an input connected to the brake switch in series, a relay to connect and disconnect the brake lamp circuit, and a relay from the engine to the drive axle of the vehicle.
Is mounted in the electromagnetic field by energizing the stator which is fixed to the frame, causing excessive current to the rotor, the retarder braking the running of the vehicle at the overcurrent, the retarder control unit for operating the re Tada, detects a vehicle speed oN and the vehicle speed detecting device, is connected to the relay, and a control unit for the retarder operation signal and the vehicle speed signal of the retarder control unit is input, the control unit, the output time of more than a predetermined vehicle speed value during acceleration of State, and when decelerating, turn on the output and accelerate.
Has a comparator circuit to continue the output to the ON state until the predetermined vehicle speed value the smaller than the predetermined vehicle speed value when, and an oscillation circuit which operates with the output of the comparator circuit, and outputs intermittent pulses to relay It is characterized by the following.

[0007]

According to the present invention, a vehicle equipped with a retarder is provided.
The usage of the braking force display is as follows: (a) When only the retarder is used (the brake lamp is
Flashing) (b) In the case of use of only the main brake (brake lamp
Lighting to) (c) use of main brake + retarder (brake lamp
Lit), and each will be described. (B) When using only the retarder When the vehicle speed is equal to or higher than a predetermined value , the retarder mounted on the vehicle
When the device is activated,
Input to the control unit,
The knit detects the vehicle speed and sends it to the control unit.
Input to The retarder is activated and the vehicle speed is
The brake light blinks when the value is higher than the value. That is,
Control unit, the comparison circuit
The output is turned ON when the vehicle speed is equal to or higher than the vehicle speed value. Comparison circuit
The oscillation circuit operates with the output of. Intermittent power from the oscillation circuit
Is output to the relay, which outputs the brake light
The connection or disconnection of the
The lamp flashes. The following vehicle is
Blinking lamp causes weak braking by retarder
You can see that it is. Here, to the control unit
The "predetermined vehicle speed value" as the force signal of
And the values are different. That is, in the comparison circuit,
When accelerating, the output is turned on when the vehicle speed exceeds a specified value.
You. On the other hand, during deceleration, the output is turned on and
Output to a predetermined vehicle speed value smaller than the predetermined vehicle speed value at speed
The force is maintained in the ON state. If the vehicle speed is lower than the specified value
Brake light does not blink when the vehicle speed is lower than the specified value
Because the following vehicle is blinking in the low speed range of the preceding vehicle
You are released from your attention.

(B) In the case of using only the main brake When the main brake is applied, the brake switch is turned on.
The DC current from the brake switch circuit to the relay
(Q1) flows, and the direct current (Q1)
Are kept in the connected state. This allows the brake lamp
Lights up. By the lighting of this brake lamp,
The car knows that the main brake is applied to the preceding vehicle.
It is determined that strong braking by the main brake is applied.
You. (C) When using the main brake + retarder When the main brake is applied, the brake switch turns ON.
From the brake switch circuit to the relay
DC current (Q1) flows. At the same time, the use of retarders
As a result, an intermittent pulse current (Q2) flows through the relay.
Therefore, a pulse current is added to the DC current (Q1) in the relay.
(Q2) is superimposed and flows, but this DC current (Q1)
Therefore, the relay is maintained in the connected state. As a result,
Turn on the rake lamp. Lighting of this brake lamp
The following vehicle has the main brake applied to the preceding vehicle
Knowing that the main brake
It turns out that there is.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.
This will be described below. In FIG. 1, reference numeral 1 denotes a + terminal of a power supply of a vehicle, and an ignition switch 2 for starting the rotation of an engine is connected to a circuit connected to the + terminal 1. , And the retarder control unit 3 is activated.

The output of the braking force changeover switch 4 for switching the braking torque in accordance with the rotation speed of the rotor of the retarder 6 and the gear ratio of the transmission is input to the retarder control unit 3. and, the braking force changeover switch 4, parking blanking to be ON by the release of the parking brake
It is connected to the rake release switch 5.

The retarder control unit 3 to which the output is input outputs the retarder 6 to the retarder 6 in order to control the braking force of the retarder 6 based on the state, and the operation of the retarder 6 with such an output is as follows. Lighting of a lamp 7 provided in the driver's seat for confirming the operation of the retarder informs the driver of this.

On the other hand, brake lamps 8a and 8b for notifying the following vehicle of the braking of the vehicle and preventing a rear-end collision of the following vehicle.
Are provided on the rear surface of the vehicle. Brake switch 1
1, an input section 9A of the relay 9 is connected in series. An open / close switch 9B for the relay 9 is interposed in the circuit 21 of the brake lamps 8a and 8b. Brake lights 8a, 8
b is the + of the power supply via the open / close switch 9B of the relay 9.
Is connected to the terminal 10, the relay 9 operates when turned ON the brake switch 11 which turns ON the main brake <br/> key at the by the main brake operation, the switch O
N, and the brake lamps 8a and 8b are turned on.

Reference numeral 12 denotes a diode for preventing current from flowing from the circuit 20. The above is the same as the vehicle equipped with the conventional retarder 6, but a control unit A is connected between the retarder control unit 3 for lighting the lamp 7 and the relay 9, and the current from the circuit 19 is A diode 13 for preventing wraparound is connected between the control unit A and the relay 9.

Reference numeral 14 denotes a vehicle speed detecting device which detects the running speed of the vehicle and indicates the vehicle speed in terms of frequency. The control unit A converts a frequency to which the frequency of the vehicle speed detection device 14 is input into a voltage, converts the output voltage from the conversion circuit 15 to a predetermined voltage, and outputs when the output voltage is high. It comprises a comparison circuit 16, an oscillation circuit 17 which operates by an output of the comparison circuit and oscillates a pulse, and an amplification circuit 18 which amplifies a pulse voltage of the oscillation circuit 17.

The amplifying circuit 18 operates with an output for lighting the lamp 7 of the retarder control unit 3 . While the retarder control unit 3 is operating ,
When the vehicle speed is equal to or higher than the vehicle speed, the amplifier circuit 18 also operates to output the amplified pulse to the relay 9. This allows the break
The lamps 8a and 8b blink. And retarder 6
Does not work (from the retarder control unit 3 to the lamp
In the case where there is no output for lighting 7) , the amplifier circuit 18 does not operate, and therefore there is no output for the relay 9.

Therefore, the relay 9 is connected to the brake switch 1
The brake lamps 8a and 8b are turned on only when 1 is turned on . FIG. 2 shows the comparison circuit 16
Indicates whether the output is to the oscillation circuit 17 or not. When the vehicle is in an accelerating state as shown in the figure, the output is OFF up to 10 km / h, and the vehicle is accelerated to this speed. When the vehicle is in a deceleration state, the ON state is continued until the speed decreases to 5 km / h,
When the speed is reduced to this speed, it is turned off. In other words, the comparison circuit 16, a predetermined car during acceleration
When the speed is higher than the speed value (for example, 10 km / h), the output is turned on , and when decelerating, the output is turned on.
Then, the output is turned on to a predetermined vehicle speed value (for example, 5 km / h ) smaller than the predetermined vehicle speed value (for example, 10 km / h) during acceleration.

FIG. 3 shows an oscillation waveform when the oscillation circuit 17 operates in response to the output of the comparison circuit 16. The oscillation frequency is about 50 to 100 cpm. Therefore, the frequency of the pulse output from the amplifier circuit 18 is the same frequency, and the current when the pulse is turned on flows through the relay 9, and the relay 9 turns on and off the switch according to this frequency, and applies the brake. The lamps 8a and 8b
Flashes at N, OFF.

Next, the operation of the present embodiment will be described.
The usage of the braking force display for vehicles equipped with retarder 6
There are three (a), (b) and (c) below, each explained
I do. (B) When only the retarder 6 is used (the brake lamp 8
(a, 8b flashes) (b) When only the main brake is used (brake lamp 8
a, 8b are lit) (c) When using the main brake + retarder 6 (brake
The lamps 8a and 8b light up)

(A) In the case of using only the retarder 6 In the case of exceeding a predetermined vehicle speed value, the retarder mounted on the vehicle
When the server 6 is set to the operation state, the operation state is entered.
Is input to the control unit A. In addition,
The control unit A detects the vehicle speed and detects it.
Put in. When the retarder 6 is actuated and the vehicle speed is less than a predetermined value.
The brake lights 8a and 8b blink when the vehicle is on.

That is, in the control unit A,
The comparison circuit 16 outputs a signal when the vehicle speed exceeds a predetermined value.
The force is turned on. Oscillator circuit with output of comparison circuit 16
17 operates. Intermittent pulses from the oscillation circuit 17
The brake lamp 8 is output to the
Connection and disconnection of a and 8b are repeated. This
Therefore, the brake lamps 8a and 8b blink.

[0021] The following vehicle has a speed greater than a predetermined speed of the preceding vehicle.
Blinking of the brake lights 8a and 8b
It can be seen that weak braking is applied only by da6. Ma
The following vehicle is a vehicle with the retarder 6 mounted on the preceding vehicle.
The auxiliary brake is applied by operating the retarder 6
It is possible to know that, and the danger of rear-end collision can be avoided.

Further, a signal to the control unit A
The “predetermined vehicle speed value” as a signal is a value when decelerating and when accelerating.
Are different. That is, the comparison circuit 16
At high speed, when the vehicle speed exceeds a specified value (for example, 5 km / h)
The force is turned on. This output is transmitted to the oscillation circuit 17.
The pulse signal is transmitted from the oscillation circuit 17 to the relay 9.
As a result, the brake lamps 8a and 8b blink. Meanwhile, deceleration
Sometimes the output is turned on and the specified
Vehicle speed value (for example, 5 km / h)
(For example, 10 km / h)
You. This output is transmitted to the oscillation circuit 17, and the oscillation circuit 17
Pulse signal is transmitted to the relay 9 from the
8a and 8b blink. If the vehicle speed is less than the specified value
Is less than a predetermined value, the brake lights 8a and 8b blink.
There is no following vehicle, the blinking display of the preceding vehicle in the low speed range
You will be released from your attention.

(B) In the case of using only the main brake When the main brake is applied, the brake switch 11
N and relay from circuit 19 of brake switch 11
9, a DC current (Q1) flows, and this DC current (Q1)
As a result, the relay 9 is maintained in the connected state. This
To turn on the brake lamps 8a and 8b. This blur
By turning on the illumination lamps 8a and 8b, the following vehicle
It is determined that the main brakes are applied to both
You can see that the rake is applying strong braking.

(C) Place of use of main brake + retarder 6
When the total main brakes are applied, the brake switch 11 is O
N and relay from circuit 19 of brake switch 11
9, a DC current (Q1) having a predetermined value flows. at the same time,
Intermittent pulse current (Q2) is generated by using retarder 6.
It flows to relay 9. Therefore, the relay 9 has a direct current
The pulse current (Q2) is superimposed on (Q1) and flows.
Relay 9 is kept connected by the DC current (Q1)
Is done. This turns on the brake lamps 8a and 8b.
Let it.

As described above, when the retarder 6 is activated,
The brake switch 11 is turned on by the brake operation.
Then, the brake lamps 8a and 8b light up. This place
When the braking force (α1) by the brake operation is
Braking force (α2) from the main wheel
Braking force is (α1 + α2) stronger than when only rake
And the braking distance becomes shorter.

By turning on the brake lamps 8a and 8b,
The following vehicle has the main brake applied to the preceding vehicle
It is determined that the strong braking by the main brake is applied
It turns out that there is.

According to the above-described configuration, during acceleration (acceleration
Later), when retarder 6 is activated and the vehicle slows down
Can inform the following vehicle of this,
Can be prevented.

[0028]

[Effects of the Invention] As described above, according to the present invention,
When accelerating (after accelerating), reduce the number of vehicles by using only the retarder.
Even if you speed up, you can tell this to the following car,
Danger of rear-end collision can be prevented.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing an output state of a comparison circuit according to the first embodiment;

FIG. 3 is an oscillation waveform diagram of the above oscillation circuit.

[Explanation of symbols]

 A control unit 3 retarder control unit 6 retarder 8a, 8b brake lamp 14 vehicle speed detection device

Claims (1)

(57) [Scope of request for utility model registration] 1. A brake lamp provided on a rear surface of a vehicle, a brake switch that is turned on when a main brake is operated, a relay having an input connected to the brake switch in series, and connecting and disconnecting a circuit of the brake lamp. mounted between leading from the engine to the drive axle of the vehicle, in the electromagnetic field by energizing the stator which is fixed to the frame, causing excessive current to the rotor, the retarder braking the running of the vehicle at this overcurrent, re Tada a retarder control unit for operating a vehicle speed detecting device for detecting a vehicle speed, is connected to the relay, and a control unit for the retarder operation signal and the vehicle speed signal of the retarder control unit is input, the control unit, during acceleration The output is turned on when the vehicle speed exceeds a predetermined value , and the output is turned on when decelerating. Together with
A comparison circuit continues fast to the predetermined ON state <br/> Outputs to small predetermined vehicle speed value from the vehicle speed value when, operating at the output of the comparator circuit, an oscillation circuit for outputting the intermittent pulse relay And a braking force display device.