JPS59130753A - Open and close control device for retractable head light - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to l) an opening/closing control device for a tractor pull headlamp, which ensures that the normal position is maintained even when an instantaneous open or close signal is applied; Further, even when the headlight is switched from the on state to the small rung state, the normal position is maintained.

A car's IJ l-rough tuple headlights stop in a slightly open or nearly closed position. Since it is a part of the trench, leaving it half-open may damage the appearance, and if excessive pressure is applied from outside the trench, it may cause damage to the opening/closing mechanism.

Fig. 2 shows an example of a conventional opening/closing control device for a tractor-pull headlight, which includes a motor 1 that opens and closes the headlight (not shown), a position detection member 2 that rotates using the motor's power, and a It is comprised of a relay circuit 3 and a manual switch 4 that cut off the power to the motor 1 when the detection member 2 detects the open or closed position of the headlight. Manual switch 4 is mover 4
a, a corresponding terminal 4C that sends a forced open signal, a normal terminal 4d, a movable element 4b and a corresponding L-terminal 4e that sends a headlight lighting and open signal, a small lamp lighting terminal 4f, and It has a terminal 4g that sends a signal to turn off and close the headlight.

The position detection member 2 includes a circular sliding surface 2a formed of a conductor on the negative side, an open signal stop portion 2b formed by cutting off a part of the outer periphery of the sliding surface 2a and using it as an insulating portion, and a circular sliding surface 2b formed from a conductor on the negative side, and an open signal stop portion 2b extending from the center toward the outer periphery. The contact piece 2b' connected to the terminal 4e of the manual switch 4 is brought into contact with the circumference including the open signal stop part 2b, and the contact piece 2b' is connected to the terminal 4g. The connected contact piece 2c' is brought into contact with the circumference including the closing signal stop portion 2C.

Reference numeral 2d denotes a contact piece having one end connected to the relay coil 3a of the relay 3, and is in a position where the position detection member 2 comes into contact with the sliding surface 2a no matter where the position detection member 2 is located.

Therefore, if the manual switch 4 switches the movable element 4b to the terminal 4gK from the illustrated position (the retractable headlamp is in the open position and lit), the headlamp turns off and the relay coil 3a is energized, and its contact 3b is turned off. As a result of being connected to the power supply side, the motor 1 is driven and moves the headlight to the closed position. This operation continues and stops until the close signal stop portion 2c reaches the position of the contact piece 2c' due to the position detection member 20 rotations. This stop position/'i is the position where the headlight is in the closed state.

When mover 4b is switched from terminal 4g to terminal 4.8K,
When the headlights turn on, Ij p is turned on through contact piece 2b'.
- As a result of the coil 3a being excited, the motor l is driven in the same manner as described above and the open signal stop portion 2b of the position detection member 2 is activated by the contact piece 2.
It stops at the position where it reaches "b'. This stop position is the position where the headlight is in the open state. Furthermore, when the movable element 4b is switched from terminal 4θ to terminal 4fK, the headlight is switched to the small lamp. There are no other changes.

The movable element 4a is used to open the headlight regardless of the position of the movable element 4b, and this effect can be obtained by switching the movable element 4a to the terminal/IC.

As mentioned above, this control device also satisfies the functions required of a retractable headlamp, but when the manual switch 4 is operated instantly, for example, the movable member 4b is connected to the terminal 4e.
→ When switching from 4g to 4e, the motor 1 is driven even if it is instantaneous, so the headlight is about to close. On the other hand, the position detection member 2 is also rotated, but because it is instantaneous, the contact piece 2b' stops the open signal. Only the headlights that remain within the area of the portion 2b stop at an ambiguous position that is slightly closed from the normal position.

Sorry, this means that when the headlight is in the closed state, mover 4
A similar problem occurs even if b is changed from instantaneous terminal 4g to →4e →4g. In other words, as a result of the relay coil 3a being excited through the contact piece 2b', the motor 1 is driven and the headlights are about to open, while the contact piece 2c' remains within the area of the close signal stop part 2c, and only the headlights are slightly opened. It stops at the open position.

Of course, if the areas of the open/close signal stop parts 2b and 2c are made sufficiently narrow, and the contact piece 2b' or the contact piece 2c' crosses these areas even with a slight rotation of the motor, the above problem can be solved. This can be solved, but it is extremely difficult to determine the appropriate range because the range of movement of the position detection member 2 due to the inertial rotation of the motor 1 must be taken into consideration, and furthermore, if this range is not sufficient, it may cause malfunctions. Become.

The present invention has been made in order to deal with such circumstances, and provides a control device that can maintain the headlights at a proper position without stopping at an ambiguous position even when a manual switch is instantaneously operated. be.

Hereinafter, a detailed explanation will be given according to the illustrated embodiment.

Reference numeral 10 shows a control device according to the present invention, which is interposed between the manual switch 4 and the position detection member 2, and is provided with a movable member 4b.
This function eliminates the inconvenience of the lactable headlight opening or closing midway and remaining in that state even when the IJ) is instantaneously operated. That is,
Depending on the position of the mover 4b of the manual switch 4, IJ)
It has a relay circuit 11 that switches whether to give an open signal or a close signal to the lactable headlamp, and this relay circuit 1
1, when the movable element 4b is connected to the terminal 4e, the relay coil lla is excited together with the lighting of the headlight, and its contact 11
The configuration is such that b is the closed signal terminal 11a, and is switched to the open signal terminal lie. Incidentally, the other end of the contact 11b is connected to the power source via the contactor 4a. The relay coil], 1a is connected in series to a drive transistor 12 which turns on when the movable element 4b is connected to the terminal 4e and provides excitation to the relay coil 1], a, and the drive transistor 1a is connected in series to Reference numeral 12 indicates a capacitor and a resistor which are connected to the self-holding transistor 13, which turns on under the same conditions, to maintain the on state. 14 and 15 are a capacitor and a resistor forming a timer, and the capacitor 14 is connected in series with the self-holding transistor 13. , resistance 15
is connected so that the base current of the drive transistor 12 flows to the collector terminal of the self-holding transistor 13. The timer using the capacitor 14 and the resistor 15 is activated by the electric charge of the capacitor 14 charged when the self-holding transistor 13 is turned on, and the movable element 4b is instantly moved from the terminal 4e to
Even if an operation such as f → 4e or terminal 4e is turned on to 4g, then instantaneously turned on to 4f from terminal 4g and then returned to 4g is performed, the drive transistor 12 is turned on or kept on and stopped midway. This function works to cut off the generation of ambiguous open/close signals that flicker.

Next, the operation will be explained.

(1) When forcibly opening the retractable headlight, it is sufficient to insert the mover 4a of the manual switch 4 into the terminal 4c, which connects the contact piece 2b' and the contact piece 2d, and the relay circuit 3 The relay coil 3a is energized and its contact 3b is turned on, thereby driving the motor 1 and opening the headlight. At this time, the position detection member 2 also rotates, and the open signal stop portion 2b reaches the position of the contact piece 2b' to stop the drive of the motor 1.

(2) When it is desired to close the headlights to the open position and turn them on, the movable member 4b of the manual switch 4 is connected to the terminal 4e. As a result, the headlights are turned on and the relay coil 1a of the relay circuit 11 is energized, so that the contact 11b becomes the open signal terminal 11. C and the headlights are in the open position. Note that this operation is the same as the previous explanation. At this time, the control device 10 initially turns on the self-holding transistor 13, charges the capacitor 14, and further charges the drive transistor 1.
2 is also turned on. Even if the movable element 4b is switched to the small runzo lighting terminal 4g, a part of the collector current of the drive transistor 12 becomes the base current of the self-holding transistor 13, forming a self-holding circuit, and the relay coil a remains in the excited state. Maintain contact 11. kl never switches.

This means that, for example, when waiting at a traffic light with the headlights turned off and only the small lamps turned on, the headlights are not retracted each time, so the opening/closing mechanism of the headlights is wasted. This has the advantage of not causing any problems.

Furthermore, even if the movable element 4b is operated incorrectly in the above-mentioned lighting state and the momentary terminals 4e→4f→4e are operated, the charge in the capacitor 14 is discharged through the 1-drive transnoster 12 and the resistor]5, so this transistor remains on for a while. contact 111 of relay circuit 11) due to the above-mentioned erroneous operation.
is not switched to the closed signal terminal 11 (l. As a result,
l) There is no possibility of inconveniences such as l-lactable headlights stopping in a slightly closed state.

(3) When it is desired to put the headlight in the closed position and turn it off, the movable element 4b of the manual switch 4 is inserted into the terminal 4f (the position shown in FIG. 1). As a result, the headlights are turned off and the excitation of the relay coil ila of the relay circuit 11 is cut off. As a result, the contacts 1.11) are switched to the close signal terminals 1d and the headlights are placed in the closed position. At this time, in the position detection member 2, unless the contact pieces 2C' and 2d are energized via the sliding surface 2a, the relay coil 3a of the relay circuit 3 is energized.
Contact point 3b is located on the power source side and maintains motor 1 in a driving state. Then, the close signal stop portion 2C of the position detection member 2 is connected to the contact piece 2.
When the position C' is reached, the motor 1 stops. This position is the headlight closed position. At this time, the control device 10 turns off both the drive transistor 12 and the self-holding transistor 13 as the movable element 4b is operated.

Furthermore, if the movable element 4b is momentarily operated from terminal 4e to terminal 4f in the light-off state, the capacitor 171 will not be charged when the movable element 4b is switched to the terminal 4e, and the movable element 4b will return to the terminal 4f. capacitor 14 even if
The drive transistor 12 is turned on by the discharge current, the relay coil lla of the relay circuit 11 is excited, and its contact II
b to the open signal terminal 11C. relay coil 1
The excitation time of the motor lIr1.1a is a short time until the electric charge of the capacitor 14 is released, but during this time the motor lIr1. The position detection member 2 is also rotated. After that, the relay coil of the relay circuit 11]]a is deenergized and the contact 1.1b is closed signal terminal 11.1. (Even if it returns to the position i, the contact piece 2C' goes beyond the area of the close signal stop part 2C and reaches the sliding surface 2a, so the power to the motor 1 continues and stops when the headlight reaches the closed position.) I will do it.

Therefore, there is no inconvenience such as stopping at an intermediate position. Note that the explanations of (2) and (3) above are for the case where the movable element 4a of the manual switch 4 is located at the terminal 4d.

As explained above, even when the operation switch of the present invention turns on or off the tractor pull headlight and simultaneously turns it into the open or closed position, the headlight opens halfway and closes halfway. Since it eliminates the inconvenience, there is no so-called half-open state, and it has the effect of eliminating defects in appearance, failure of the opening/closing mechanism due to careless suppression load, etc.

After you operate the manual switch to turn the headlights on, the headlights will remain in the upright position unless you turn the manual switch to the off position, ensuring stable operation even in the event of an erroneous operation.

Furthermore, when the manual switch is inserted into the small lamp terminal, if the headlight is off, only the small lamp will turn on, and if the headlight is on, the headlight will remain in the upright position. It is possible to turn off the headlights and turn on the small lamps, so even if you temporarily switch to the small lamps, such as when waiting at a traffic light, you do not have to open or close the headlights each time. It has many effects.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of the inventive device, and FIG. 2 is a circuit diagram of a conventional device. 1 ・Motor 2...Position detection member 4...
・Manual switch 10 ・Control device 11 ・Relay circuit 12 ・Drive transistor 13 ・Self-holding transistor 14 ・Capacitor 15 ・Resistance patent applicant Honda Motor Co., Ltd. Stanley Electric Co., Ltd. 33

Claims (1)

[Claims] By operating a manual switch that turns on and off the retractable headlamp, an energizing path to the motor that opens and closes the retractable headlamp is closed, and a position detection member that rotates in conjunction with the motor allows the IJ 1. In the opening/closing control device for the tractor pull headlight, which detects the proper position of the retractable headlight and stops energizing the motor, an open signal or a close signal is sent to the retractable headlight by the lighting operation using the manual switch. At the same time as closing the excitation circuit of the relay circuit that gives
It has a self-holding transistor that conducts when the manual switch is switched to the small lamp terminal and forms a conductive path to the relay circuit when the transistor is conductive. The tractor pull is characterized in that the excitation of the relay circuit is maintained through the drive transistor by the self-holding action of the holding transistor, and the self-holding action of the self-holding transistor is released by turning off the light using the manual switch. Headlight opening/closing control device.