JPH0139237Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a retractable headlight drive control device for retracting and exposing a headlight in an automobile or the like.

PRIOR ART In general, in the case of retractable headlights, the lamp unit is exposed and retracted according to the operation of turning on and off the headlight by a drive control device, but when the drive control device malfunctions, the lamp unit is It is possible to manually expose and store the images.

Figure 2 shows an example of the configuration of a retractor drive mechanism for raising and lowering a lamp unit.The lower end is rotatably rotated by a pivot 4 via a link 2 and a rod 3 using a unidirectionally rotating motor 1 as a drive source. By pushing or pulling the upper end of the supported lamp unit 5, the lamp unit 5 can be retracted or exposed. In the figure, 6 indicates a lid attached to the lamp unit 5 side.

FIG. 3 shows an example of the configuration of the retractor control section that controls the drive of the motor 1, and shows the operating state of the lighting switch L-SW, the contact plate 7 that rotates in conjunction with the motor 1, and the UP and DOWN sides. The energization of the motor 1 can be controlled depending on the state of contact with each of the contacts 8 and 9. In the figure, R-SW is a retractor switch that is linked to the lighting switch L-SW.
When is in the OFF position, it closes to the DOWN side,
When the lighting switch L-SW is in the on position, it is closed to the UP side. Further, M-SW indicates a manual switch of the retractor, and RL indicates a motor drive relay.

Figure 4 shows motor 1 and contact plate 7.
A contact plate 7 is integrally attached to a worm wheel 12 that rotates by meshing with a worm gear 11 provided on a rotating shaft portion of a motor 1. A notch 13 is formed in the contact plate 7, and every half rotation of the contact plate 7, the notch 13 acts to connect the contact contact 10 on the neutral side and UP.
Connection switching between the contact contacts 8 on the side and the contact contacts 9 on the DOWN side is performed alternately.

Conventionally, in such a retractable headlight drive control device, as shown in FIG. 2, a knob 14 is attached to the rotating shaft of the motor 1, and the contact plate 7 switches the energization to the contact contacts 8 and 9. To prevent this, the lamp unit 5 can be manually retracted or exposed by rotating the motor shaft in the opposite direction to when the power is applied by operating the knob 14. If the knob 14 was turned in the opposite direction to the designated direction by mistake, the motor 1 could be driven unexpectedly.

That is, for example, in the circuit state shown in FIG. 3 where the lamp unit 5 is stored, when attempting to expose the lamp unit 5 by manual operation of the knob 14, when the knob 14 is turned in a specified direction, the contact plate 7 It rotates in the opposite direction (the direction indicated by the dotted line arrow in the figure) when energized, and as a result, the A side of the notch 13 of the contact plate 7 comes into contact with the contact contact 9 on the DOWN side, but at this time the retractable Even if the headlight drive control device happens to operate normally and the motor 1 is driven, in that case the contact plate 7 will rotate in the direction of the arrow in the figure, so the contact contact 9
is instantly separated from the contact plate 7, and the power to the motor 1 is immediately cut off. Therefore, in this case, even if the knob 14 is operated, it will be instantly returned to its original position.

However, when the knob 14 is turned in the opposite direction to the specified direction, the contact plate 7 rotates in the energizing direction shown by the arrow in the figure, and the B side of the notch 13 comes into contact with the contact point 9, causing the motor to turn. 1 is driven, in this case, the contact plate 7 rotates once and the motor 1 continues to be energized until the contact plate 7 is detached from the notch 13, and the lamp unit 5 is once exposed. Then, one cycle of operation is suddenly performed in which the knob 14 is retracted and the knob 14 rotates together with the rotating shaft of the motor 1.

Therefore, conventionally, when retracting or exposing the lamp unit 5 by manual operation in the event of a failure of the retractable headlight drive control device, etc., when the operation knob 14 is turned in the opposite direction to the specified direction, To prevent the motor 1 from being driven unexpectedly, it is necessary to disconnect one terminal of the battery or the fusible link to cut off the power supply to the system before operating the knob 14.

Purpose This invention was made taking the above points into consideration.
A retractable headlight drive control device that allows the lamp unit to be retracted or exposed by manual operation, allowing the lamp unit to be retracted or exposed by knob operation safely while the system is powered on. It provides:

Configuration In order to achieve this objective, the present invention has developed a retractor drive mechanism section using a unidirectional rotating motor as a drive source, a contact plate that rotates in conjunction with the motor, and the contact state of each contact point on the UP and DOWN sides. The retractable headlight drive control device includes a retractor control unit that controls energization of the motor according to the motor. A one-way clutch means is provided that transmits the rotational force to the rotating shaft of the motor when the rotating shaft is turned in the direction of rotation during driving, and causes the knob to idle when the knob is turned in the opposite direction and when the motor is driven. It is something.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a retractable headlight drive control device having a retractor drive mechanism section shown in FIG. 2 and a retractor control section shown in FIG. 3.
As shown in FIGS. 1a and 1b, the operation knob 14' itself that turns the motor rotation shaft 15 for driving the retractor has a
A one-way clutch mechanism that does not transmit the driving force of the motor 1 to the knob 14' is integrally incorporated.

In other words, the operating knob 14' incorporating the one-way clutch mechanism is connected to the motor rotation shaft 1.
A cylindrical gear part 17 having a plurality of chevrons formed on its circumferential surface with one side gently inclined and the other side rising vertically is integrally attached to the rotating shaft 16 side connected to the rotary shaft 16, and a plurality of operations. an operating ring 19 having a plurality of actuators 18 disposed coaxially around the outer circumference of the gear part 17 such that the plurality of actuators 18 cooperate with the gear part 17;
and a knob main body 20, the operating ring 19 of which is attached inside, and which is rotatably attached to the rotating shaft 16.

The plurality of operating elements 18 in the operating ring 19 are each provided with spring properties and protrude radially at a predetermined angle so as to be pressed against the gear portion 17 side. The tip of the gear portion 17 comes into contact with a vertically rising mountain-shaped surface of the gear portion 17.

However, in the operation knob 14' in which the one-way clutch mechanism is integrally incorporated in this way, the first
When the knob body 20 is turned in the direction of rotation of the motor rotation shaft 15 when the motor 1 is driven as indicated by the arrow in FIG. rotation, thereby allowing the motor rotation shaft 15 to be rotated manually.

At that time, even if the motor 1 is in the driving state, the gear part 17 will rotate at high speed in the direction of the arrow, so even if the knob body 20 is pressed at that time, the knob body 20 will be rotated by the operation of the operator. It idles and no driving force of the motor 1 is transmitted to it.

Furthermore, when the knob body 20 is turned in the direction opposite to the arrow, the knob body 20 simply rotates idly without each of the operators 18 of the operation ring 19 transmitting any rotational force to the gear part 17. It becomes impossible to rotate the rotation shaft 16 manually.

Therefore, by using the operation knob 14' that is integrated with such a one-way clutch mechanism, when the retractable headlight drive control device malfunctions, the knob body 20 can be turned in the direction of the arrow to manually operate the retractable headlight. When retracting or exposing the lamp unit, the contact plate 7, which is linked to the rotating shaft of the motor 1 in the retractor control section, comes into contact with the contact contact 8 on the UP side or the contact contact 9 on the DOWN side, as described above, and the motor Even if the motor 1 is suddenly driven for one cycle, the driving force of the motor 1 is absorbed by the one-way clutch mechanism, so that manual operation can be performed safely. become.

It goes without saying that instead of integrally incorporating such a one-way clutch mechanism into the operation knob 14', the knob and one-way clutch may be formed separately and combined.

Alternatively, during manual operation, in the retractor control section, no voltage is applied to the contact contacts 8 on the UP side or the contact contacts 9 on the DOWN side in any case, regardless of the rotation direction of the rotating shaft of the motor 1. It is conceivable to take such a control means to prevent the motor 1 from being driven by energization, but in that case, the circuit configuration of the retractor control section would become complicated and the reliability would decrease. I'm getting used to it. In this regard, with the present invention, safety can be effectively ensured during manual operation simply by providing a simple one-way clutch mechanism.

In addition, in order to prevent the motor from accidentally driving when the knob is operated, the driving force is applied to the motor's rotating shaft only when the knob is turned in the opposite direction to the rotation of the rotating shaft when the motor is being driven. It is conceivable to provide one-way clutch means that can transmit the signal.

However, in such a one-way clutch means, when the knob is turned in the direction opposite to the rotation of the rotating shaft during driving of the motor, in the circuit configuration shown in FIG.
The side contacts contact point 9 on the DOWN side, but
If the retractable headlight drive control device happens to operate normally at that time, the motor 1 may be instantaneously driven.

At this time, the contact plate 7 rotates in the direction of the arrow in the figure, and the contact contacts 9 are instantly separated from the contact plate 7, so that the power to the motor 1 is momentarily cut off.

In this case, even if the knob is operated, it will immediately be returned to its original position, and the impact caused by the instantaneous drive of the motor 1 will be transmitted to the knob.

In this regard, according to the present invention, when the operation knob 14' is turned, there is no possibility that it will be returned by the drive of the motor 1, and the operation knob 14' can be turned without any impact. become able to.

Effects As described above, in the retractable headlight drive control device according to the present invention, when the rotary shaft of the retractor drive motor is rotated using the operation knob to manually retract or expose the lamp unit, the driving force of the motor is reduced. The rotational force from the knob is unilaterally transmitted to the motor rotation shaft via a one-way clutch that does not transmit the torque to the knob, making it possible to safely perform manual operation using the knob while the system is powered on. It has the great advantage of being able to

[Brief explanation of the drawing]

FIGS. 1a and 1b are front views and plan sectional views showing an example of the configuration of an operating knob incorporating a one-way clutch mechanism according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the configuration of the retractor drive mechanism. FIG. 3 is an electrical wiring diagram showing an example of the configuration of the retractor control section, and FIG. 4 is a front view showing an example of the configuration of the retractor drive motor and contact plate portion. DESCRIPTION OF SYMBOLS 1... Retractor drive motor, 5... Lamp unit, 7... Contact plate, 8...
UP side contact contact, 9... DOWN side contact contact, 11... Worm gear, 12... Worm foil, 14, 14'... Operation knob, 15...
Motor rotating shaft, 16... Rotating shaft, 17... Gear part, 18... Operator, 19... Operating ring, 20...
knob body.

Claims (1)

[Scope of utility model registration request] The retractor drive mechanism is driven by a motor that rotates in one direction, and the motor is energized according to the contact state between the contact plate that rotates in conjunction with the motor and each contact point on the UP and DOWN sides. A retractor control unit is provided with a knob that allows the rotation shaft of the motor to be turned manually, and when the knob is turned in the direction of rotation of the rotation shaft when the motor is driven, the rotational force is transferred to the motor. A retractable headlight drive control device comprising a one-way clutch means for transmitting power to the rotating shaft of the retractable headlight and rotating the knob idly when the knob is turned in the opposite direction and when the motor is driven.