JPH0790751B2 - Vehicle output limiting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle output limiting device, and more particularly to a device for limiting engine output when a seat belt is not worn.

[Conventional technology]

Generally, in an automobile (vehicle) seat having a seat belt, wearing of the seat belt is encouraged, which is desirable from the viewpoint of safety in an automobile.

However, since many drivers neglect to wear their seat belts, various seat belt wearing promoting means have been adopted.

The seatbelt state sensor detects the state where the seat belt tongue is inserted into the lock mechanism, and the warning mechanism such as the lamp is activated when the seatbelt is not worn other than this seatbelt wearing state. Conceivable.

Further, as shown in FIG. 7, the seat belt state sensor f
In some cases, the relay d is turned on (closed) by actuating the key switch c only when the seat belt is worn and the engine is started by the starter e when the seat belt is worn. Proposed.

Reference numeral a in the drawing indicates a battery, and b indicates a fuse.

[Problems to be solved by the invention]

However, in the former one of such conventional seatbelt wearing promotion means, even if the warning by the warning mechanism is ignored, it does not hinder the driving of the vehicle.
There is a problem that warnings are easily ignored.

Also, with the latter, it is necessary to put on the seat belt every time to start the engine for putting in the garage and warming up, and the operation is troublesome, so always consider the structure of the seat belt state sensor. However, there is a problem that the engine can be started by inserting the tongue of the seat belt into the lock mechanism and putting the seed belt in the worn state, which reduces the seat belt wearing rate.

The present invention is intended to solve such problems, and an object thereof is to provide an output limiting device for a vehicle, which improves safety by improving a wearing rate of a seat belt. .

[Means for solving problems]

Therefore, the vehicle output limiting device of the present invention includes a seat belt state sensor that detects whether or not the seat belt is worn in the vehicle, a vehicle speed sensor that detects the speed of the vehicle, and an engine of the vehicle. Output limiting means capable of limiting the output of, and a storage means for storing a history of the vehicle speed sensor detecting a high vehicle speed under the situation where the seat belt state sensor detects that the seat belt is in a worn state, When the vehicle speed sensor detects a high vehicle speed and the seatbelt state sensor detects a non-wearing state, when the history is not stored by the storage means, the output limiting means is operated to change the history. A control means for deactivating the output limiting means when stored is provided.

[Action]

In the above-described vehicle output limiting device of the present invention, in response to each detection signal from the seat belt state sensor and the vehicle speed sensor, the seat belt state sensor detects the unworn state and detects the vehicle speed sensor high vehicle speed in the storage means. When the history of the thing is not stored, the output limiting means limits the output. On the other hand, even if the seat belt state sensor detects the unworn state, the output limiting unit does not limit the output when the storage unit stores the history of the vehicle speed sensor detecting the high vehicle speed.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 6 show a vehicle output limiting device as an embodiment of the present invention. FIG. 1 is a block diagram showing the overall structure thereof, and FIG. 2 is a cross-sectional view of a seat belt state sensor thereof. FIG. 3 is a perspective view showing the interior of the vehicle when the device is applied to an automobile, FIG. 4 is a cross-sectional view of the seat switch, FIG. 5 is a schematic view showing the output limiting means, and FIG. It is a flow chart for explaining an operation.

As shown in FIGS. 1 to 3, the automobile 1 as a vehicle is
A speed limit control circuit 8 as control means and storage means is provided. The speed limit control circuit 8 includes a detection signal from a belt switch 4 as a seat belt state sensor, a seat switch 5, a vehicle speed sensor 6, and a door. Each detection signal from the switch 7 is input, and each control signal is output from the speed limiting control circuit 8 to the lamp, the buzzer of the warning mechanism 9 and the output limiting means 10.

The front seat 2 of the automobile 1 is provided with a three-point seat belt 3, and the seat belt 3 is detachably attached to the case 4a by a tongue 16 and the case 4a is attached by a stay 22. It is fixed to the car body.

As shown in FIG. 2, a belt switch 4 is provided in the case 4a. The belt switch 4 is a tongue.
When the bottom portion 16c of the tongue 16 and the lever 17 are in contact with each other, the on state (the seat belt is worn) is set, and the bottom portion 16c of the tongue 16 is
When the lever and the lever 17 are separated from each other, the off state (the seat belt is not worn) is set.

That is, in the belt switch 4, the tongue 16 is the case 4a.
When it is inserted into the inside and is engaged with the lock member 19, it is turned on, and when the tongue 16 is released to the outside of the case 4a and is not engaged with the lock member 19, it is turned off.

As shown in FIG. 4, the seat 2 is provided with a seat switch 5, and in the seat cushion of the front seat 2, a large number of springs 2a are arranged between the left and right aggregates 2b. When the occupant is seated on the front seat 2, the lower surface of the spring 2a pushes down the lever 5a of the seat switch 5 to turn on the seat switch 5,
When no passenger is seated on the front seat 2, the lower surface of the spring 2a does not contact the lever 5a of the seat switch 5, and the seat switch 5 is turned off.

As shown in FIG. 5, the output limiting means 10 includes a drive circuit 10a.
And a motor 10b, a spring 10c, and a throttle valve 11. The drive circuit 10a receives an output limiting control signal from the speed limiting control circuit 8 to drive an electric or hydraulic motor 10b. Supply signal or drive oil.

When the motor 10b receives a drive electric signal or drive oil from the drive circuit 10a, the wire 14 having one end locked is wound around the spring 10c, and the throttle valve 11 is closed from the fully open state. The air intake amount in the intake passage 15 is limited by rotating to a predetermined opening degree in the direction.

Further, when the drive electric signal from the drive circuit 10a or the drive oil motor 10b is not received, the throttle valve 11 is activated by the spring 10c.
Is kept fully open.

In the figure, reference numeral 12 is a throttle valve, 12a is a cable, 1
3 is an intake manifold, 16a is a hole for engagement of the lock member 19,
18 is a release lever, 19a is an end of the lock member 19, 19b is a protrusion of the lock member 19 that can engage with the hole 16a, 20 and 21 are springs, 23 is a knob, 24 and 25 are lead wires, and E is Shows the engine.

Since the vehicle output limiting device as the embodiment of the present invention is configured as described above, the speed limiting control circuit 8 as the control means and the storage means performs control based on the processing flow shown in FIG.

First, when the key switch changes from the off state to the on state (accessory position, ignition position and start position), the high speed history flag is reset (step
a1) When the vehicle speed exceeds the set value (for example, 15 km / h) (step a2), the vehicle speed flag is set via the YES route (step a5).

That is, by going through step a2, the speed limit control circuit 8 as the storage means is in a state in which no high speed history is stored.

If the vehicle speed is less than or equal to the set value, the vehicle speed flag is reset via the NO route (step a3), and the output restriction is released (step a4).

Then, it is determined whether or not the seat belt 3 is worn (step a6), and if the belt switch 4 is in the off state (state where the seat belt is not worn), the lamp of the warning mechanism 9 is made to blink in step a7. , Issue warning I.

Belt switch 4 is on (seat belt is on)
If so, if the vehicle speed flag is set (step
a8), if the high-speed history flag is set (step a9) and the vehicle speed flag is reset, the contents of the high-speed history flag are held unchanged and then the routine returns to Ritan II.

That is, the high speed history is stored in the speed limit control circuit 8 as a storage means by passing through the step a2.

That is, when the seat belt 3 is worn at a predetermined vehicle speed or higher, the high speed history flag is set.

After warning I, the door switch 7 detects the open / closed state of the door (step a10), and when the door is opened and the driver or the like is replaced, the YES switch is used even if the key switch is not turned off. After that, the high speed history flag can be reset in step a1 by turn I.

If the door is closed by the door switch 7, it is determined whether the vehicle speed flag is set (step a1
1) If not set, return to return II, and if set, it is judged whether or not the high speed history flag is set. (Step a12).

If the fast history flag is set, warning II will
The buzzer of the warning mechanism 9 is warned or the lamp is turned on until the seat belt 3 is worn (step a1
3) Returning to Return II, the output is not limited even if the belt switch 4 is turned off during high speed running.

That is, if the output is restricted as it is when the seat belt 3 is disengaged during high-speed traveling, it is dangerous. Therefore, even if the seat belt 3 is dismounted after the vehicle has started running, the output is not restricted.

If the high speed history flag is reset, it means that there is no history of wearing the seat belt 3 at a predetermined vehicle speed or higher, so that the speed limit control circuit 8 sends an output limit control signal to the output limit means 10, and the engine E Is limited (step a14), and the vehicle speed becomes the set vehicle speed.

At the same time as the reduction of the engine output, the warning III activates the lamp and the buzzer of the warning mechanism 9 (step a15), whereby a warning at the time of output limitation is given and the reason for the engine output reduction becomes clear.

As a means for resetting the high-speed history flag, when it is determined that the seat load is not applied by the off-state detection signal from the seat switch 5, a means for resetting the high-speed history flag is inserted after the return II. May be.

Further, as the output limiting means, a means for limiting the supply of the fuel amount to the carburetor or the injector may be used.

〔The invention's effect〕

As described in detail above, according to the vehicle output limiting device of the present invention, the following effects and advantages can be obtained.

(1) The seat belt state sensor has storage means for storing a history of the vehicle speed sensor detecting a high vehicle speed in a situation where the seat belt state sensor detects that the seat belt is worn, and the seat belt state sensor is not worn. Even when is detected, the output limiting unit does not limit the output when the history is stored in the storage unit. For example, if the seat belt is worn at a speed equal to or higher than the predetermined vehicle speed, the high speed history flag is set, and thereafter, when the seat belt comes off during high speed traveling, the vehicle speed is not limited. Therefore, the vehicle speed does not suddenly drop during high-speed traveling, which does not cause a dangerous state.

(2) Since the engine output is not limited when the vehicle is traveling at a low speed less than the predetermined vehicle speed, the vehicle can be moved without wearing a seat belt when the vehicle is parked, etc. .

[Brief description of drawings]

1 to 6 show a vehicle output limiting device as an embodiment of the present invention. FIG. 1 is a block diagram showing the overall structure thereof, and FIG. 2 is a cross-sectional view of a seat belt state sensor thereof. FIG. 3 is a perspective view showing the interior of the vehicle when the device is applied to an automobile, FIG. 4 is a cross-sectional view of the seat switch, FIG. 5 is a schematic view showing the output limiting means, and FIG. It is a flow chart for explaining the action,
FIG. 1 is a circuit diagram of a conventional seat belt wearing promotion means. 1 ... automobile as vehicle, 2 ... front seat, 2a ...
Spring, 2b ... Aggregate, 3 ... Seat belt, 4 ... Belt switch (micro switch) as a seat belt state sensor, 4a ... Case, 5 ... Seat switch (micro switch), 5a ... Lever, 6 ... Vehicle speed sensor, 7
...... Door switch, 8 ...... Speed limit control circuit as control means, 9 ...... Warning mechanism, 10 ...... Output limit means, 10 a ...... Drive circuit, 10 b ...... Motor, 10 c ...... Spring, 1
1 …… Throttle valve, 12 …… Throttle valve, 12a …… Cable,
13 ... intake manifold, 14 ... wire, 15 ... intake passage, 16 ... tongue, 16a, 16b ... hole, 16c ... bottom, 17
...... Lever, 18 ... Release lever, 19 ... Lock member,
19a …… End, 19b …… Projection, 20,21 …… Spring, 2
2 …… Stay, 23 …… Knob, 24,25 …… Lead wire, E ……
engine.

Claims (1)

[Claims] In a vehicle, a seat belt state sensor for detecting whether or not a seat belt is worn, a vehicle speed sensor for detecting a speed of the vehicle, and an output limit for limiting an output of an engine of the vehicle. Means, a storage means for storing a history that the vehicle speed sensor detects a high vehicle speed in a situation where the seat belt state detects that the sensor is wearing a seat belt, and the vehicle speed sensor indicates a high vehicle speed. When the history is not stored by the storage means under the condition that the seatbelt state sensor detects the unworn state, the output limiting means is operated and the history is stored when the history is stored. When the output limiting means is deactivated, a control means is provided,
Vehicle output control device.