JPH0220119Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a turn signal and hazard control device for a vehicle for selectively executing a turn signal operation and a hazard operation.

[Prior Art] For example, in a car, a left turn instruction and a right turn instruction (turn signal At the same time, the emergency state is displayed (hazard operation) by flashing each of the turn signal lamps at the same time in response to the ON operation of the hazard switch. In this case, when the hazard switch is turned on while the turn signal operation is in progress, the hazard operation is executed with priority over the turn signal operation. When the hazard operation that was preferentially started is subsequently stopped, the turn signal operation that was in the execution state is restarted.

However, the reality is that when the hazard operation is stopped, the turn signal operation is almost unnecessary. Therefore, in the conventional configuration, if the hazard operation is performed during the turn signal operation, the unnecessary turn signal operation is It will be done. Particularly in this case, there is a great possibility that the driver will not notice that the turn signal operation is being executed unnecessarily as described above, and if he continues to drive the vehicle, it may cause problems for the drivers of other vehicles. There is a risk of causing a misunderstanding about the direction in which the vehicle is traveling. In addition, in recent years, momentary type turn signal switches,
Specifically, by adopting a turn signal switch equipped with an operating lever that rotates to the on position only when operated and returns to the neutral position at all times, we aim to improve its operability and operational feel. Although things have started to be done,
When such a momentary type turn signal switch is adopted, once the hazard operation has started, it is impossible to determine whether or not the turn signal operation is in progress based on the position of the control lever. The situation is such that the above-mentioned risks are even more likely to occur.

[Purpose of the invention] The present invention was developed in view of the above circumstances, and its purpose is to reliably prevent the situation where the turn signal operation is performed unnecessarily after the end of the hazard operation, and to improve the safety of the vehicle while driving. It is an object of the present invention to provide a turn signal and a hazard control device for a vehicle that exhibits effects such as improved performance.

[Summary of the invention] In order to achieve the above object, the present invention provides a turn signal switch in which the operator is configured in a momentary type, and a turn signal lamp for turning left or right depending on the operation of the turn signal switch. In the device, a latch means is provided for selectively latching the blinking state, and both of the turn signal lamps are blinked in response to turning on of a hazard switch, wherein the latch means is provided in response to the operation of the hazard switch. The structure includes a release means for forcibly releasing the latched state.

[Embodiments] Hereinafter, first to third embodiments of the present invention will be described with reference to the drawings.

First, the first embodiment will be explained based on FIGS. 1 and 2. 1 is a turn signal switch for left turns, 2 is a turn signal switch for right turns, and each of these turn signal switches 1, 2
is configured to turn on only when momentary type turn control levers (not shown) are rotated in the left-turn direction and right-turn direction, respectively, and turn-on signals Sa and Sb are activated in response to each turn-on. occurs. Reference numeral 3 designates a hazard switch also configured in a momentary type, which is turned on when an operator (not shown) is operated, and generates an on signal Sc in the on state. Reference numeral 4 denotes a control circuit that includes both the latch means and the release means in the present invention, and this control circuit has a built-in microcomputer that receives the on-signals Sa, Sb, and Sc as inputs, and outputs the on-signals Sa, Sb, and Sc. The left turn turn signal lamp 5 and the right turn turn signal lamp 6 are controlled as schematically shown in FIG. 2 using Sc and a control program stored in advance.

That is, FIG. 2 shows only a portion of the control program for the control circuit 4 that is related to the gist of the present invention, and will be described below. However, the second
In the figure, LF is a left turn instruction flag that indicates that the left turn signal lamp 5 is blinking and a left turn instruction is being given, and RF is a left turn instruction flag that indicates that the right turn turn signal lamp 6 is blinking and a right turn instruction is being given. The right turn instruction flag, HF, is a hazard flag that indicates that the above-mentioned turn signal lamps 5 and 6 are flashing to indicate that a hazard operation is being performed, and each flag LF, RF, and HF are "0" in the initial state.
has been returned to.

Now, in judgment step a, it is judged whether or not the on signal Sa has been inputted, in other words, whether or not the turn signal switch 1 for left turn has been turned on,
If “YES”, move to judgment step b,
If "NO", the process moves to judgment step c. In judgment step b, the right turn instruction flag RF is "1".
If it is ``YES'', that is, if a right turn instruction operation is being performed, a right turn latch release step d is performed to release the right turn instruction latch state, and the right turn instruction flag RF is set to ``0''. The flag initialization step e is executed sequentially to return the flag to the flag, and the process moves to the judgment step m. If the answer is "NO", the left turn instruction latch step f, which latches the left turn turn signal lamp 5 in a flashing state, and the left turn instruction flag LF are set. Flag change step g to change to “1”
After that, the process moves to the above-mentioned judgment step m.

In the judgment step c, it is judged whether or not the on signal Sb is input, in other words, whether the turn signal switch 2 for turning right is turned on.
If “YES”, move to judgment step h,
If the answer is "NO", the process jumps to the judgment step m. In the above judgment step h, the left turn instruction flag
This is to judge whether LF is "1" or not,
If “YES”, that is, if a left turn instruction operation is being performed, a left turn latch release step i for releasing the left turn instruction latch state and a left turn instruction flag
The flag initialization step j for returning LF to "0" is executed sequentially, and the process moves to judgment step m. If the answer is "NO", the right turn instruction latch step k is executed to latch the right turn turn signal lamp 6 in a blinking state.
Then, the process proceeds to the above-mentioned judgment step m through a flag change step l in which the right turn instruction flag RF is changed to "1".

In short, as a result of executing each of the steps a to l described above, when the left turn turn signal switch 1 is turned on without a left turn instruction or a right turn instruction (turn signal operation),
The left turn turn signal lamp 5 is latched in a blinking state, and when the right turn turn signal switch 2 is turned on in the same state, the right turn turn signal lamp 6 is latched in a blinking state. The left turn instruction state can be canceled when the right turn turn signal switch 2 is turned on, and the right turn instruction state can be canceled when the left turn turn signal switch 2 is turned on. Although not shown, the left turn instruction and right turn instruction states are automatically canceled based on the output of a detection device provided to detect the rotation direction and rotation angle of the steering wheel. At this time, the left turn flag LF and right turn flag RF are also initialized.

On the other hand, in the judgment step m, the on signal Sc
In other words, it is determined whether or not the hazard switch 3 has been turned on. If the answer is "YES", the process moves to judgment step n, and if the answer is "NO", the process moves to the next step (not shown). Jump. In the above judgment step n, it is judged whether the hazard flag HF is "1" or not. If "YES", that is, when the hazard operation is being performed, the hazard latch is activated to release the latched state of the hazard operation. Release step o and hazard flag
A flag initialization step p for returning HF to "0" is sequentially executed, and the process proceeds to the next step (not shown). If the judgment in step n is "NO" (that is, the hazard operation is not being executed), the turn signal lamps 5 and 6 for left and right turns are both latched to a blinking state. The process proceeds to the next step through a hazard latch step q, a forced release step r that releases the latched state of the left turn instruction and right turn instruction, and a flag change step s that changes the hazard flag HF to "1".

In short, as a result of executing each of the steps m to s described above, when the hazard switch 3 is turned on with the hazard operation stopped, both turn signal lamps 5 and 6 are blinking (the hazard operation is not executed). When the hazard switch 3 is turned on again while the hazard operation is being executed, the latched state is released and the hazard operation is stopped. Particularly in this case, when the hazard switch 3 is turned off while a left turn or right turn is being instructed
When the left turn instruction or right turn instruction is turned on, the latch state of the left turn instruction or right turn instruction is forcibly released. Therefore, when the hazard operation is subsequently stopped, the left turn instruction or right turn instruction will be returned to the conventional state. This prevents inadvertent restarts like this.

In the first embodiment, the left-turn instruction latch step f and the right-turn instruction latch step k function as a latch means according to the present invention, and the forced release step r functions as a release means according to the present invention. .

A second embodiment of the present invention is schematically shown in FIG. 3, and only the parts different from the first embodiment will be explained below. The feature is that a hardware logic circuit is configured to control. That is, 7 and 8 are R-S flip-flops as latching means, 9 is a T flip-flop constituted by J-K flip-flops, 10 to 13 are inverters, 14 and 15 are OR circuits as release means, and 16 to 18 are pull-up resistors. These are connected together with turn signal switches 1 and 2 for left and right turns and a hazard switch 3 between the positive power terminal +Vcc and the ground as shown in the figure. As a result of this connection, when turn signal switch 1 for left turn is turned on, R
When the -S flip-flop 7 is set and latched to output the ON signal Sa (high level signal) from its set output terminal, and the right turn turn signal switch 2 is turned on, the R-S flip-flop 8 is set. It is latched in a state in which an on signal Sb (high level signal) is output from its set output terminal. Further, when the turn signal switch 1 is turned on, the R-S flip-flop 8 is reset, and when the turn signal switch 2 is turned on, the R-S flip-flop 7 is reset. The latched states of signals Sa and Sb are released. The T flip-flop 9 then outputs its output terminal Q every time the hazard switch 3 is turned on.
The state in which the on signal Sc (high level signal) is output from the switch and the state in which the output is stopped are alternately exhibited, and when the hazard switch 3 is turned on in this way, the R-S flip-flop 7,
8 is forcibly reset via the OR circuits 14 and 15, thereby releasing these latched states and stopping the output of the ON signals Sa and Sb. On the other hand, 19 is an R-S flip-flop 7,8
This is a drive control circuit installed to receive each output from the T flip-flop 9, which flashes the left turn turn signal lamp 5 when it receives the on signal Sa, and blinks the left turn turn signal lamp 5 when it receives the on signal Sb. The turn signal lamp 6 for a right turn is made to blink, and furthermore, when an on signal Sc is received, both turn signal lamps 5 and 6 are made to blink.

Therefore, in the second embodiment having such a configuration, the left turn instruction and the right turn instruction are selectively started in response to turning on the left turn and right turn turn signal switches 1 and 2, and the hazard switch is also turned on. The start and stop of the hazard operation is repeated every time the hazard switch 3 is turned on, and especially when the hazard switch 3 is turned on, the latch state of the left turn instruction or right turn instruction is forcibly released, and as a result, the above-mentioned 1st
The same effect as in the embodiment is achieved.

A third embodiment of the present invention is shown in FIG. 4, and only the differences from the first embodiment will be described below. That is, 20 is a turn signal switch, which has a latch means (not shown), and turns on between contacts (c and a) when a momentary type turn operation lever (not shown), which is an operator, is rotated in the left turn direction. When the operating lever is rotated in the right turn direction, the contacts (c and b) are latched in the on state, and in the normal state, the movable contact c is turned on. is designed to be held in an open state. In this case, turn signal switch 20
A voltage signal is given to the movable contact c from a drive control circuit 21, which will be described later, so that when the contact (c and a) is turned on, an on signal Sa is output from the fixed contact a. With,
When the contact (c-b) is turned on, an on signal Sb is output from the fixed contact b. Reference numeral 22 denotes a hazard switch, which is constituted by a so-called position type switch, and is designed to generate an on signal Sc in response to being turned on. 23 is an electromagnetic solenoid which is a release means,
When this is energized, the latched state of the turn signal switch 20 is forcibly released.
24 is a solenoid control circuit that controls energization/disconnection of the electromagnetic solenoid 23;
4 is a detection device 25 of a well-known configuration that is provided to detect the rotation direction and rotation angle of the steering wheel when the on-signal Sc is received.
The electromagnetic solenoid 23 is configured to be energized when a cancel signal is received from the electromagnetic solenoid 23. still,
The power to the solenoid control circuit 24 is supplied from the drive control circuit 21, and when the drive control circuit 21 receives the on signal Sa, it flashes the left turn turn signal lamp 5 and also outputs the on signal. When receiving Sb, flash the turn signal lamp 6 for right turn, and then turn on the signal.
Turn signal lamp 5, 6 when receiving Sc
Both are configured to blink.

Therefore, in the third embodiment having such a configuration as well, the contact point (c-
A left turn instruction and a right turn instruction are selectively started in response to turning on between a) and between (c and b), and the start and stop of the hazard operation are repeated each time the hazard switch 22 is turned on. In particular, when the hazard switch 22 is turned on, the latched state of the left turn instruction or right turn instruction is forcibly released, and as a result, the same effect as the first embodiment is achieved.

In the above embodiment, the latched state by the latching means is released when the hazard switch is turned on, but the latched state may be released when the hazard switch is turned off.

[Effects of the invention] As is clear from the above explanation, according to the invention, a release means is provided for forcibly releasing the latched state of the turn signal operation when the hazard switch is operated. It is possible to reliably prevent a situation in which a turn signal operation is performed unnecessarily after a hazard operation has been completed, thereby preventing the danger associated with such an unnecessary turn signal operation, and improving vehicle driving safety. It has the following effects.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention, with FIG. 1 being an electrical configuration diagram and FIG. 2 being a flowchart showing control details. Further, FIG. 3 is an electrical block diagram showing a second embodiment of the present invention, and FIG. 4 is an electrical block diagram showing a third embodiment of the present invention. In the figure, 1, 2, 20 are turn signal switches, 3, 22 are hazard switches, 4 is a control circuit (latching means, release means), 5, 6 are turn signal lamps, 7, 8 are R-S flip-flops (latching means). means), 14 and 15 are OR circuits (cancelling means),
19 and 21 are drive control circuits, 23 is an electromagnetic solenoid (release means), and 24 is a solenoid control circuit.

Claims (1)

[Scope of utility model registration request] The operator has a latch means for selectively latching one of the turn signal lamps for left turn and right turn in accordance with the operation of the turn signal switch configured in a momentary type, and also for turning on the hazard switch. In the turn signal and hazard control device for a vehicle, the turn signal lamps are both blinked in response to the operation of the hazard switch, and a release means is provided for forcibly releasing the latched state by the latching means in response to the operation of the hazard switch. A vehicle turn signal and hazard control device characterized by: