JPH0236414B2 - RITORAKUTABURUHETSUDORAITOKUDOSEIGYOSOCHI - Google Patents

Abstract

PURPOSE:To prevent careless or erroneous operation, by using operation instructing signals for moving headlights up and down and positional signals as control signals so that a motor drive instructing signal is issued when a newest operation instruction signal is generated. CONSTITUTION:A retractable headlight drive control device provided, with a motor mechanism including a motor 5 for moving headlights up and down, comprises operation instructing signal forming means 11, 12 for generating instructing signals U, D for raising and lowering headlights, and positional signal generating means 21, 22 for generating signals indicating the raise and lowered positions of the headlights PU, PD. Motor drive instruction signal forming means 31, 32 issues a motor drive signal MD only when the operation instructing signal is turned into the lowering instructing signal from the raising instructing signal or viceversa, and when the operation instructing signal is turned into before completion of the operation, motor drive follow-up instruction forming means 1, 2 controls the means 30, 31 to issue a motor drive instructing signal MD in accordance with the turning of the operation instructing signal.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a so-called retractable headlight in a vehicle, particularly an automobile, in which the headlight can be raised from the vehicle body or lowered and stored within the vehicle body. The present invention relates to a retractable headlight drive control device that controls the raising and lowering operations of a retractable headlight to prevent it from being unintended by the operator.

(Prior Art) FIG. 8 shows a conventional retractable headlight drive control device. For example, a similar device is disclosed in Japanese Patent Application Laid-Open No. 130753/1983. In the figure, numeral 1 indicates various operation switch contacts related to the light, and numeral 1A is for turning on and off the headlight. When the headlight is turned on, the headlight rises, and when it is turned off, the headlight lowers. 1B is for turning on and off an auxiliary light (so-called small lamp, etc.). 1C is for switching the beam direction of the headlight, and generally, when the contact is off, it is a low beam, and when the contact is on, it is a high beam. 1D responds to a so-called passing operation; if the headlight is lowered, the light rises and the light is turned on for a predetermined short time. Reference numeral 2 denotes a unit that gives operation commands to the headlight based on these switch operations, and sends out various command signals 1a, 1b, 1c through a control circuit (not shown). In addition, contact 2A is used to command the rise and fall of the headlight.
has. This contact point 2A is connected to the headlight lighting operation switch 1A and the passing operation switch 1D.
It is activated by the operation of , and commands the terminal d side to lower the headlight and the terminal U side to command the headlight to rise. Reference numeral 5 denotes a motor for raising and lowering the headlight, and according to this conventional example, it rotates in only one direction and forms part of a motor mechanism that raises and lowers the headlight in combination with a link mechanism. 7
is a retractable operation switch placed inside the vehicle, and is a manual switch for raising or lowering the headlight regardless of whether the light is on or off.The terminal d side commands the headlight to descend, and the terminal U commands the headlight to rise. . 8 and 9 are rising command signals U formed by the contact 2A or the switch 7.
Alternatively, it is a diode that allows the downward command signal D to pass through, and is used to block reverse current and protect the circuit. 20 is a connecting device for forming a connection path for the ascending command signal U and the descending command signal D.
This connecting device 20 is arranged 180 degrees apart from a disk 20A made of a conductive material and having a notch 20a that rotates in synchronization with the drive motor 5,
It has contacts 20B and 20C that receive an ascending command signal U and a descending command signal D, respectively, and a contact 20D for forming a conductive path to the motor side. 4
3 is a relay for driving the motor 5, and has a contact 43A. When the contact 43A is on the u side, the motor 5 is energized and the light rises, but
When it is on the d side, the motor 5 is not operated and is in the light lowering position.

Next, the operation of this conventional device will be explained.

In the illustrated state, the light is in the lowered position, and at this time, the notch 20a of the disc of the connecting device 20 is connected to the contact 2.
It is located at 0C. Therefore, the descending command signal D
cannot pass through the connecting device 20. In addition, the ascending command signal U is transmitted to the disk 20A and the contactor 20.
B and 20D are electrically connected to each other, so they can pass through the connecting device 20, but the contact 2A
The signal U is not generated by either the switch 7 or the switch 7. Therefore, the motor 5 does not rotate and the headlight maintains its lowered state. Here, when the manual switch 7 is operated to connect to the u side, a rise command signal U is formed, and this rise command signal U is generated because the disk 20A and the contacts 20B and 20D are electrically connected to each other. It passes through the connecting device 20. The ascending command signal U that has passed through the connecting device 20 is
The relay 43 is energized and the contact 43A is switched to the u side. Therefore, the motor 5 starts rotating and the light starts rising. At this time, the disk 2 of the connecting device 20
Since 0A also rotates in the direction of arrow R, the notch 2 of the disk 20A is located at a position rotated 180 degrees from the position shown in the drawing.
0a reaches the position of the contactor 20B, and the ascending command signal U is interrupted. That is, the light has completed its ascent and is in a state of waiting for the arrival of the descending command signal D. The operation when the descending command signal D is formed is as follows.
This is similar to the above and can be easily understood.

(Problem to be Solved by the Invention) Such retractable headlights generally have an operation knob located in the engine compartment, and it is expected that the light will not be able to be raised due to a motor circuit failure or freezing. It is now possible to raise and lower the light by manually operating the knob (for example, in the 1980s).
146549 etc.). However, in the conventional device as described above, when this type of operation knob is rotated, the disc 20A of the connecting device 20 also rotates.
Moreover, when the power is on, the disk 20A
comes into contact with one of the contacts, so the motor 5 begins to rotate. In this case, if the disk 20A rotates in the opposite direction to the arrow R by operating the knob, there is a possibility that the motor 5 will be energized and start rotating in the arrow R direction. Furthermore, even if the disk 20A is rotated in the direction of arrow R by operating the knob, there is a possibility that the motor 5 will be energized and start rotating in the direction of arrow R. However, the person operating the knob did not intend for the motor to rotate in this manner, and it is undesirable for unexpected motor operation to place a burden on the motor and cause malfunctions such as damage to the motor. Further, although there is no problem if the power is turned off when operating the knob, it is desirable for safety to be able to deal with forgetting to turn off the power.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a retractable headlight drive control device that does not cause any careless operation contrary to the operator's intention even if the power is not turned off.

(Means and effects for solving the problem) In order to achieve this object, the retractable headlight drive control device according to the present invention provides a motor mechanism having a motor 5 that rotates in one direction to move the headlight up and down. , operation command signal forming means 11 and 12 for forming an operation command signal consisting of a rise command signal U or a fall command signal D for raising or lowering the headlight; Raised position signal PU or lowered position signal PD in response to position
Position signal generating means 2 for generating a position signal consisting of
1 and 22, the operation command signal and the position signal are input, and a motor drive command is issued to the motor mechanism only when the operation command signal changes from an ascending command signal to a descending command signal or from a descending command signal to an ascending command signal. and motor drive command signal forming means 31 and 32 for sending out the motor drive command signal, and when the raising/lowering command of the operation command signal is changed before the end of the raising or lowering operation of the light, the motor driving command is changed according to the raising or lowering command. The motor drive follow-up command forming means 1 and 2 are configured to control the motor drive command signal forming means 31 and 32 so as to send out an operation command signal for commanding the rise and fall of the headlight and a current position of the headlight. The drive motor is operated only when the operation command signal changes even if the position signal changes, and the operation command signal is used before the end of the raising or lowering operation of the light. When the motor drive command is repeatedly switched, the motor drive command is sent out in response to the switched operation command signal. With such a configuration, the light drive motor operates based on the constantly generated operation command signal.

In addition, hereinafter, in this specification, "ascending" and "descending" refer to all cases in which the headlight is protruded from the vehicle body and retracted in the vehicle body, respectively. , regardless of whether it is due to parallel movement. Also, if the headlight is fixed and only the headlight cover opens and closes, for convenience,
Suppose that it is the rise or fall of the "headlight".
Furthermore, the storage of the headlight into the vehicle body by "lowering" includes cases where a portion of the headlight is exposed during storage.

(Embodiments of the invention) Examples of the invention will be described below with reference to the accompanying drawings. Note that the same reference numerals in each figure indicate similar objects.

FIG. 1 is a system diagram of a retractable headlight drive control device according to an embodiment of the present invention in which the motor drive follow-up forming means is omitted, and FIG. 2 shows a more detailed system diagram. Note that each system diagram shows only one side of the lights on the left and right sides, but the other side has a similar configuration and operates in synchronization with the left and right sides.

In Figures 1 and 2, 3 is a NAND gate;
4 is a motor drive circuit, and 5 is a light drive motor. The motor drive circuit 4 receives the motor drive command signal MD via a current limiting resistor 41.
The switching transistor 42 is turned on and off, and when the transistor 42 is turned on, the relay 43 is energized, its constant contact 43A is closed, and the motor 5 is driven. motor 5
is a motor that rotates in one direction, and in combination with a link mechanism, raises and lowers the light.

Further, 11 is a rising command signal forming means for forming a rising command signal U, and 12 is a descending command signal forming means for forming a descending command signal D. The contact point 2A of the command unit and the operating switch 7 constitute both of these command signal forming means 11 and 12. When the contact 2A or the switch 7 is on the u side, a rise command signal U is generated, and when it is on the d side, a fall command signal D is generated.

Furthermore, 21 and 22 are respectively elevated position signals.
These are a raised position signal generating means and a lowered position signal generating means that generate a PU and a lowered position signal PD, and for example, the rotary connecting path forming unit 20 explained in the conventional example of FIG. 8 and shown in FIG. It does both. That is, the unit 20 includes a conductive plate 20A made of a conductive material that rotates in synchronization with the drive motor 5, and a contactor 20B that is arranged 180 degrees apart and forms a raised position signal PU and a lowered position signal PD, respectively. , 20C, and a contact 20 located 90 degrees apart from both of these contacts 20B and 20C and connected to the ground side.
D. The conductive plate 20A has a substantially circular shape and has a notch 20a oriented radially inward at a portion of its outer periphery. This notch 20a
The radial end of is located at a distance r from the rotation center 20r of the conductive plate 20A. In addition, the contact 20
B and 20C are each located at the same distance R from the rotation center of the conductive plate 20A. This distance R is slightly larger than the distance r of the notch 20a from the rotation center 20r (R>r). Further, the contactor 20D is located at a distance R ₁ from the rotation center 20r of the conductive plate 20A, and this distance R ₁ is slightly smaller than the distance r (R ₁
<r). Therefore, the contactor (for example, 20B) where the notch 20a is not located is electrically connected to the contactor 20D via the conductive plate 20A, but the contactor (for example, 20C) where the notch 20a is located is electrically connected to the contactor 20D via the conductive plate 20A.
The electrical connection with the conductive plate 20A, that is, the electrical connection with the contactor 20D is cut off.

Motor drive command signal forming means 31 and 32 receive the outputs of these command signal forming means 11 and 12 and position signal generating means 21 and 22. The motor drive command signal forming means 31 and 32 generate a motor drive command signal only when the operation command signal consisting of the up command signal U and the down command signal D changes from the up command to the down command or from the down command to the up command. The configuration is such that even if the MD is sent out and the position signals PU and PD change, a motor drive command is not generated unless the operation command signals U and D change.
Although various bistable multivibrators can be used for this purpose, in this embodiment the motor drive command signal forming means 31, 32 are D-type flip-flops.

A D-type flip-flop, as is well known, has a data input D and a clock input CK, and data is stored by a clock and read from an output Q or. That is, when input D=1, the clock
When CK is input, output Q=1, and after that D=
As long as it is 1, regardless of the change in clock CK,
Maintain Q=1. And even if D=0, Q
Q = 1 is maintained, but if clock CK is input at this time, Q = 0.

However, according to this embodiment, as shown in FIG. 3a, two devices are used which have a direct set terminal S and a direct set terminal R in addition to the data terminal D, clock terminal CK, and output terminal Q. For example, Motorola MC14013B flip-flop). Furthermore, according to this embodiment, the first
As shown in Figures to Figure 2, data terminals D1 and D
2 to the B power supply, and set terminal S to the ground side. Therefore, data input is always a logic 1
and the set input is always a logic zero. Also,
Rise command U to clock terminals CK1 and CK2 respectively
and lowering command D, and reset terminal R1,
A rise position signal PU and a fall position signal PD are respectively given to R2. The operation of such flip-flops 31 and 32 is as shown in FIG. 3b. In other words, data input D=1, set input S=0, and there is no reset input (R=
0) When the clock signal CK rises (for convenience, this case is assumed to be "1"), the output Q becomes (1, 0) as shown in state (C1) in the figure. Also, if inputs D, R, and S are clock signals under the same conditions,
When CK falls (for convenience, this case is assumed to be "0"), it means that the output Q, does not change from the previous state, as shown by state (C2) in the figure. Also, when reset input R occurs and R=1, output Q, regardless of clock CK.
Q becomes (0, 1). As you can see, if there is no reset input R, the output logic (Q,)
The change in depends on the clock CK, and the reset input R
When =1, a reset is applied regardless of the clock CK, and the output (Q,) becomes (0, 1).

In addition, each flip-flop 3 in FIG.
The input side resistors and diodes 1 and 32 are resistors for forming a voltage by voltage division and diodes for blocking reverse current, and will not be explained because they do not seem to require a specific explanation.

Next, this operation will be explained with reference to the truth table shown in FIG.

FIG. 4 shows the states of contact 2A and switch 7 in specific operating states #1 to #6 of the light, and the inputs A1, B1, A2, B2 of flip-flops 31, 32.
It is also a logical string showing the logical values of outputs 1 and 2, and the logical value of the motor drive command MD which is the output of the NAND gate 3. The switching transistor 42 in FIG. 2 is of the NPN type, and when the motor drive command (MD)=1, the motor 5 rotates. Logic column #1 is the state in Figure 2 when the light is in the downward state and stopped, #2 is the state in which it starts rising, #3 is in the state in which it stops rising, #4 is the state in which it starts falling, and #5 is in the state in which it is falling. When the knob is operated, #6 shows the case when the knob is operated when ascending. Below, #1 to #6
Explain in this order.

In the state shown in Figure 2 when the light has stopped descending,
Both the contact point 2A and the switch 7 are connected to the d side. Therefore, the input CK1 of the flip-flop 31 is connected to the ground side via the resistors r11 and r12, and is at logic 0 (low level).
Furthermore, the input R1 of the flip-flop 31 is also at ground potential via the connection path forming unit 20, and is at logic 0. In this case, the output 1 of the flip-flop 31 is set to "1". At this time, the input CK2 of the flip-flop 32 is B
It is a potential obtained by dividing the voltage of the power supply by resistors r21 and r22, that is, a logic 1 (high level), and the input R2 of the flip-flop 32 is also connected to resistors r23 and r2.
A voltage according to the voltage division ratio of 4 is supplied from the B power supply,
The input logic becomes 1. In this case, the output Q2 of the flip-flop 32 is also set to "1". If the input is (1,
1), the output MD of the NAND gate 3 becomes 0, so the motor 5 does not operate and the light maintains its downward state (#1).

Next, turn either contact 2A or switch 7
Turn it to the side and operate the light to raise it. (#2). At this time, the input CK1 of the flip-flop 31 is connected to the B power supply side via the resistor r12, and becomes logic 1. At this time, the input R1 of the flip-flop 31
is still at ground potential via the connection path forming unit 20 and is at logic 0. Therefore, since the clock input (CK1) = 1 is input where the reset input R1 is "0" and is not changing, the state (C1) in FIG. 3b (hereinafter simply referred to as state (C1)) ) and flip-flop 3
The output Q of 1 is converted to "0". At this time, the input CK2 of the flip-flop 32 is connected to the resistors r21, r
22 to the ground side and becomes a logic 0. Moreover, the input R2 of the flip-flop 32 is
There is no connection with the connection path forming unit 20, and the resistance r
The voltage according to the voltage division ratio of R23 and R24 is still applied, and the input logic is 1. Therefore, the reset input R2 is ``1'' and does not change, and the clock input (CK2) becomes 0, which corresponds to state (C2), and the output 2 of the flip-flop 32 also does not change and remains ``1''. Therefore, the output MD of the NAND gate 3, which is the input (0, 1), becomes 1, so the motor 5 operates, the light starts to rise, and the conductive plate 2
The notch 20a of 0A is located at the contact 20B and stops.

Logic column #3 indicates this stopped state. In other words, the input to which the actuation command signals U and D are applied
Although the logic of CK1 and CK2 remains unchanged (1, 0), the contact between the contactor 20B and the conductive plate 20A is released by the notch 20a, so the position signals PU and PD become #2. Converting from the state of (1,
0). That is, R1 = 1, R2 = 0, and the flip-flop 31 is reset and 1 =
However, the flip-flop 32 is already in the reset state and maintains the previous value of 2=1. For this reason,
Output of NAND gate 3 whose input is (1, 1)
MD becomes 0, the motor 5 does not rotate any further, and the light stops at the raised position.

When the lowering starts at #4 from the ascending position of #3, the output logic is exactly the same as in the case of #1 and #2, except that the input logic is switched. Therefore, the motor 5 starts rotating, lowers the light and stops, at which time the logic column returns to state #1.

Next, consider the case where the knob is operated when the light #5 is lowered (the state shown in FIG. 2). Initially, the write is in the falling state, so the logic column of the controller is in state #1. In this state, when the knob is operated and the conductive plate 20A is slightly rotated, the contactor 20C contacts the conductive plate 20A, the position signal PD changes, and the input R2 of the flip-flop 31 becomes 10.
and convert. However, at this time, input CK1, CK2
does not change (0, 1), so the input of the NAND gate 3 is (1, 1) and does not change from the state #1, so the output MD becomes 0 and the motor 5 does not operate. In other words, it does not respond to movements contrary to the intention of the person operating the operating knob. The same applies to the knob operation when the light goes up in #6, the input logic is simply switched from the knob operation in #5, and the output logics (1) and (2) are exactly the same as in the case of #3. be. Therefore, the motor 5 does not rotate, and no operation contrary to the intention of the person operating the operating knob occurs.

5 and 6 are system diagrams and detailed system diagrams illustrating an embodiment of the present invention in which the retractable drive control device shown in FIGS. 1 and 2 is provided with a motor drive follow-up forming means. . That is, the difference from the above-mentioned device is that OR gates 1 and 2 are provided with one of the inputs having a negative logic, and both the outputs of the command signal forming means 11 and 12 and the position signal generating means 21 and 22 are transmitted through the OR gates 1 and 2. are used as data inputs B1 and B2 of flip-flops 31 and 32, respectively. According to such a configuration, for example, if the light operation switch is operated carelessly, the contact 2
If A repeatedly and continuously generates the ascending command signal U and the descending command signal D, for example, the ascending command signal U
Even if signals such as the descending command signal D and the ascending command signal U are generated continuously, the final desired operation is achieved, and as in the previous embodiment, unintentional light operation by the operator is avoided. This is what I am trying to do. This will be explained below.

FIG. 7 shows the operating truth values of the flip-flops 31 and 32 when command signals for raising, lowering, and raising the light are repeatedly inputted from the lowering and resting state. Figure a shows the case in the previously described apparatus (Figs. 1 and 2), and Figure b shows the case in the embodiment of the present invention (Figs. 5 and 6).
The operations of logical columns #1 to #4 in FIG. 7a are the same as those described in FIG. 4, except for #2, which is rising.
No further explanation is required. According to the logic columns #1 to #4, all the logics in the MD column are "1", indicating that the motor 5 continues to rotate. Similarly, the seventh
Operations #5 to #8 of the embodiment according to the present invention shown in Figure b
Similarly, the motor 5 will continue to rotate, but at this time, R1 in #7 with respect to #3
The logical value of is inverted. Below, logical column #5~
#8 will be explained in order to clarify the operation of the embodiment of the present invention. Note that the normal raising and lowering operations are the same as those described in FIG. 4, and their explanation will be omitted. Further, the two numbers above the columns R1 and R2 in FIG. 7b indicate the inputs of OR gates 1 and 2. Note that in this case, one input of OR gates 1 and 2 is negative logic.

First, in the state shown in Fig. 6, the #5 ascending command signal U is
is formed, the input of flip-flop 31
CK1 becomes logic (1). In addition, the input R1 of the flip-flop 31 is (0, 1) since the input of the OR gate 1 consisting of the diodes D1, 1B and the inverter 1A (in the following description and drawings,
The OR gate input display shows inverter 1 on the left.
A, 2A input, right side diode D1, D2 input) becomes logic 0. Therefore, the output 1 of flip-flop 31 is a logic 0. On the other hand, at this time, the input CK of the flip-flop 32
2 is a logic zero. In addition, flip-flop 32
The input R2 of the OR gate 2 is (0, 1)
Therefore, it becomes logic 1, and flip-flop 3
2 is reset and its output 2 is logic 1.
becomes. Therefore, the motor drive command MD, which is the output of the NAND gate 3, becomes logic 1, the motor 5 operates, and the light starts rising.

Due to this rise, the connection state of the connection path forming unit 20 changes, and the rising state becomes as shown by logic column #6. That is, flip-flop 31
The input/output state of flip-flop 32 remains unchanged.
One of the inputs of the OR gate 2 on the input R2 side changes (because the contact 20C falls to the ground side due to the rotation of the conductive plate 20A), but the R2 input does not change, and in the end the output state Q2 is the same as that of #5. The state is maintained, the motor 5 rotates, and the light continues to rise.

However, as shown in logical column #7, it is assumed that a descending command D is input by operating the switch 7 during this ascending #6. At this time, the inputs CK1 and CK1 of each flip-flop 31 and 32 that receive the operation command signal are
CK2 switches and becomes logic 0 and logic 1, respectively. Therefore, among the OR gates 1 and 2, the signal from the connection path forming unit 20 does not change, but the signal from the inverters 1A and 2A changes, and the R
1 and R2 inputs are also converted to logic 1 and logic 0, respectively. Therefore, for the flip-flop 31, the reset input R1 becomes 1, and the previous state #6 is restored.
Since 1=0 in , the output 1 becomes logic 1. Further, regarding the flip-flop 32, the reset input R2 is 0, and the clock input CK2 is 0.
converts to 1, so output 2 converts to logic 0. Therefore, the motor drive command MD becomes logic 1, and the motor 5 continues to be driven, but at this time, the motor drive command is a drive command signal for lowering the headlight when the switch 7 is switched, and this state continues. Then this drive is the sixth
In the figure, this continues until the contact 20C comes to face the notch 20a again, and the headlight rises once, then falls, and stops at the lowered position. That is, in the case of this embodiment, if the OR gates 1 and 2 are not provided as shown in FIGS. 1 and 2, the headlight can also be lowered by switching the switch 7 to the lower position. The drive command will not be issued, and the motor drive will stop at the position where the contact 20B faces the notch 20a, and the headlight will stop at the raised position even though the switch 7 has been moved to the d side. This is to prevent any untoward situation.

Furthermore, if a rising command U is generated again immediately after the descending command D is formed, #8 is similarly executed.
A drive command for raising the headlight is sent out again as shown by , and the motor drive command can always follow the switch 7. Thus, according to the present invention, the conductive plate 20A of the connection path forming unit 20 will not malfunction even if the switch 7 is continuously switched. Conversely, the above case also applies when the descending, ascending, or further descending commands are repeated in the process of finally sending out the descending command.

The present invention is not limited to the above embodiments and modifications, but within the technical scope of the present invention,
Various other embodiments and variations are possible;
Also, the fact that equivalent components can be exchanged means that
It will be clear to those skilled in the art. For example, the connection path forming means 20 can be configured as an electronic switch circuit using a limit switch or a multivibrator. Furthermore, each relay contact, switch contact, etc. could also be an analog switch using a semiconductor.

(Effects of the Invention) As described above, the present invention uses both the actuation command signal and the position signal as control signals, and sends out the motor drive command only by converting the actuation command signal. It is possible to obtain a highly reliable retractable headlight drive control device that does not cause careless operation or malfunction contrary to the intention of a user even if a knob or a light operation switch is inappropriately operated.

[Brief explanation of drawings]

Fig. 1 is a principle system diagram when the motor drive follow-up command forming means is omitted in the retractable headlight drive control device according to the present invention, Fig. 2 is a detailed system diagram of Fig. 1, and Fig. 3 is the main operation. Explanatory diagram,
FIG. 4 is an explanatory diagram of the operation, FIG. 5 is a principle system diagram of a retractable headlight drive control device according to an embodiment of the present invention, FIG. 6 is a detailed system diagram of FIG. 5, and FIG. 7 is a diagram of the present invention. FIG. 8 is an explanatory diagram of the conventional device. In the drawing, 1 and 2 are motor drive follow-up command forming means, 4 is a drive circuit, 5 is a drive motor, 2A,
7, 11, 12 are actuation command signal forming means; 21;
22 is a position signal generating means, 20 is a connection path forming means, and 3, 31, 32 is a motor drive command signal forming means.

Claims (1)

[Claims] 1. A motor mechanism having a motor that rotates in one direction to move the headlight up and down, and an operation for forming an operation command signal consisting of a rise command signal or a fall command signal for raising or lowering the headlight. a command signal forming means, a position signal generating means that operates in synchronization with the motor mechanism and generates a position signal consisting of a raised position signal or a lowered position signal in response to the position of the headlight, and the actuation command signal and the position signal. a motor drive command signal forming means that receives as an input and sends a motor drive command to the motor mechanism only when the operation command signal changes from an ascending command signal to a descending command signal or from a descending command signal to an ascending command signal; If the ascending/descending command of the command signal is changed before the end of the rising or descending operation of the light, the motor driving command signal forming means is controlled to send the motor driving command in accordance with the rising/descending command. A retractable headlight drive control device comprising a motor drive follow-up command forming means. 2. In the device according to claim 1,
A retractable headlight drive control device, wherein the operation command signal forming means is an operation switch on a driver's seat or a switch means operated by an operation switch. 3. In the device according to claim 1 or 2, the position signal generating means includes a conductive plate that rotates in synchronization with the motor and has a notch in a part, and supplies the ascending command signal. A rotary connection path forming means comprising a first contact for providing the lowering command signal, a second contact for supplying the lowering command signal, and a third contact for forming the motor drive command. Retractable headlight drive control device. 4. A retractable headlight drive control device according to any one of claims 1 to 3, wherein the motor drive command signal forming means is a bistable multivibrator. 5. In the device according to claim 4,
A retractable headlight drive control device, wherein the bistable multivibrator is a D-type flip-flop. 6. In the device according to claim 5,
A retractable headlight drive control device, wherein the motor drive follow-up command forming means is an OR gate that logically adds the operation command signal and the position signal to the data input of the D-type flip-flop.