JPS5826194Y2 - Retractable headlight drive device - Google Patents

Description

[Detailed explanation of the invention] This invention is designed in an open position (a position in which it projects outside the case and performs forward irradiation.

) and closed position (position stored in the case).

) This relates to a drive device that operates a tractor-pull headlight to take an open and closed position, respectively, and its purpose is to provide a drive device that uses a small motor as a drive source. There it is.

Conventionally, as shown in FIG. 1, this type of drive device includes a flexible inner tube inserted into an outer tube 3' of a driven member 2' which is rotated forward and backward by a motor 1' via a speed reduction mechanism. There is a device that engages the cable 4' and rotates the driven member 2' by a predetermined angle to pull or let out the cable 4', thereby causing the headlight body to assume an open or closed position (as proposed by the present applicant). No. 54-26740).

However, in this drive device, since the flexible inner cable slides in the outer tube, the resistance load is large and a large capacity driving force is required, and therefore not only the motor but also the device as a whole becomes large in size.

Furthermore, since the components such as the outer tube and the inner cable are expensive, there is a drawback that the overall cost is high.

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a driving device for an IJ l-lactable headlight that does not require the use of flexible cables and can be manufactured from inexpensive components.

In the present invention, a driving force translation mechanism is provided that converts the rotational motion of the motor as a driving power source into reciprocating linear motion, and in the converting mechanism, one end of the driven member that makes reciprocating linear motion is engaged with the main body of the headlight. At the same time, the driven member is provided with an auto-stop mechanism for controlling forward/reverse rotation and starting/stopping of the motor, and is connected to the auto-stop mechanism to select an open position or a closed position of the headlight body. It is characterized by the provision of an operation switch.

An example of implementing the present invention will be described below with reference to the drawings.

Figures 2 and 3 show an example of a beam tractor-pull headlight, in which the main body 1 of the headlight is placed inside a case 2 with an opening at the top and having a volume that can accommodate the main body 1.
It is pivotably supported by a shaft 3 inserted through the rear end of the opening, and is always biased toward the open position by the repulsive force of a spring (not shown) interposed between the main body 1 and the case 2. ing.

One end of a drive wire 5 for opening and closing the main body 1 is engaged with a pin 4a at the lower end of a lever 4 fixed to the back of the main body 1, and the other end of the wire 5 is provided at the rear of the headlight. It is inserted into a drive device 10 which will be described later.

In this embodiment, the drive wire 5 is made of a rigid wire such as wire or steel wire.

In this case, in order to prevent the wire from breaking due to the application of unexpected breaking force, it is preferable to form a bent part, a curved part, a coil part, etc. in the middle part of the wire to give the wire some elasticity or flexibility.

It is also effective to interpose a spring in the middle of the wire.

4 and 5 show one embodiment of a drive device 10 according to the present invention, in which a motor 12 that can be rotated forward and backward is provided in a case 11 of the device 10, and a motor 12 that can freely rotate forward and backward is provided. A driven member 14 is provided which is linearly moved back and forth by a motor 12 via a deceleration mechanism 13 and a driving force conversion mechanism 15.

In this embodiment, the speed reduction mechanism 13 includes an appropriate number of speed reduction gears 13a, 13b, and 13c connected to the rotating shaft of the motor 12.

Consists of 13d.

Further, the driving force conversion mechanism 15 fixes a male threaded member 15a on the same axis as the final stage gear 13a of the reduction mechanism 13, and screws a female threaded member 15b onto the male threaded member 15a.
A part of the male threaded member 15b is slidably and loosely fitted into a long hole 15d drilled in a frame 15c that supports the male threaded member 15a, and the driven member 14 is substantially extended by forward and reverse rotation of the male threaded member 15a. The female screw member 15b forming the elongated hole 1
It is configured to reciprocate along the line 5c.

It is also possible to use other means as the speed reduction mechanism 13.

An elongated plate-like arm 16 is inserted through the center of the upper part of the driven member 14 and is rotatably supported at right angles to the axis of the male threaded member 15a. The end of the drive wire 5 inserted into the chamber through the outer cup 19 is engaged.

By the way, in the vehicle shown in FIGS. 4 and 5, normally one retractable headlight is provided on each side of one vehicle body, so in order to open and close the two headlights at the same time, the left and right free ends of the arm 16 are The drive wires 5, 5 of each headlight are respectively engaged with the drive wires 5, 5 of each headlight.

In this case, since the arm 16 is rotatably supported by the driven member 14, the main body 1
If the storage timings do not match, one of the drive wires 5 is pulled by the body 1 that was closed first, and the arm 16 is rotated by an arbitrary angle around the wave member 14, and the other body 1 is closed. It is possible to balance the forces.

The same applies to the case of opening.

In addition, in the one shown in FIG.
A window 18 is bored in the upper surface of the case 11 located above the
Therefore, by looking at the member 17 through the window 18, the main body 1
It is now possible to know the open or closed position of the

An auto-stop mechanism 20 is provided on the lower surface of the driven member 14 to control the normal rotation and reverse rotation of the motor 12 as well as its starting and stopping.
The mechanism 20 is mounted on the case 11 below the driven member 14.
Two conductive members 21.21' are laid parallel to each other along the sliding direction of the driven member 14, and both members 21.2
Cutouts 21a and 21'a are formed at opposite ends of the driven member 14, and the conductive members 2 are formed on the left and right sides of the lower surface of the driven member 14.
Contacts 21 b and 21'b that are always in sliding contact with L21'
are provided, and the conductive members 21, 21' and the contactor 21b
, 21'b and an operating switch 22 for selecting the open or closed position of the motor 12 and the retractable headlight are wired as shown in the circuit diagram of FIG.

Furthermore, in the one shown in FIG. 6, a buzzer 23 is connected in parallel between the terminals of the motor 12 so that the buzzer 23 sounds simultaneously when the headlight body 1 is opened and closed. ing.

Of course, if necessary, it may be configured to emit a sound when opening or closing the door.

To explain the operation of the device of the present invention having the above configuration, FIGS. 4 and 6 show the state of the drive device 10 when the beam tractor pull headlight is in the open position as shown in FIG. The drive wire 5 is paid out the most.

That is, since the headlight body 1 is not pulled by the drive wire 5, it assumes an open position due to the repulsive force of the spring.

Incidentally, since the drive wire 5 of this embodiment is made of a rigid wire, it is possible to maintain the open position even without a spring.

Next, in FIG.
When the current is applied to
a→(→) to rotate the motor 12, and the motor 12 passes through the deceleration mechanism 13 to the male screw member 1 of the driving force conversion mechanism 15.
5a and moves the female screw member 15b screwed onto the fiber screw member 15a, the driven member 14 is moved in the direction of the arrow in FIG.

As shown in FIG. 6, as the driven member 14 moves, the contact 21'b also moves in the direction of the arrow, and finally the conductive member 21'
Notch 21! Come to position a.

Therefore, the connection between the intermediate path contactor 21'b and the conductive member 21' is interrupted, and the motor 12 stops rotating.

Thus, the arm 16 on the driven member 14 moves to the position shown by the two-dot chain line in FIG. It is forced to take a retracted closed position while resisting the repulsive force of.

Incidentally, since the buzzer 23 is also energized while the motor 12 is energized, the buzzer 23 sounds during this time, alerting the operator that the door is closed.

Further, if the closing timings of the main body 1 do not match between the left and right headlights, the arm 16 rotates at an arbitrary angle to maintain a balance between the left and right closing forces.

Furthermore, the opening/closing position indicating member 17, which has moved together with the driven member 14, indicates through the window 18 that the main body 1 has taken the closed position.

After that, when the operation switch 22 is turned to "11p",
The current flows in the following order (+) → movable piece 22a' → motor 12 → contact 21b → conductive member 21 → movable piece 22a → (→, and rotates the motor 12 in the opposite direction to the above, and the motor 12 is decelerated. The driven member 14 is moved via the mechanism 13 in the direction opposite to the arrow in FIG.

Therefore, when the contact 21b also moves in the direction opposite to the arrow shown in FIG. 6 and comes to the position of the notch 21a of the conductive member 21,
The electrical connection between the contactor 21b and the conductive member 21 in the above path is cut off, and the rotation of the motor 12 is stopped.

Thus, the arm 16 on the driven member 14 returns to the original position shown by the solid line in FIG. 4, and the drive wire 5 is fed out, so that the headlight body 1 provided at the front is moved from the case as shown in FIG. 2. From inside, take an open position with the repulsive force of the spring.

At this time, as described above, the buzzer 23 sounds, and the arm 16 rotates at an arbitrary angle to maintain a balance in the amount of opening of the headlight body 1.Furthermore, the opening/closing position indicating member 17 indicates that the body 1 is Indicates that the camera is in an open position.

As explained above, the device of the present invention is capable of positioning the headlights in the open and closed positions using the driving force of the motor, and is more useful than a manual type using a lever or the like. Since the invented device relies on switch operations, it is easy to operate and ensures reliable and reliable functionality at all times.

In particular, when used for bicycles, it is easier to operate than a manual type and ensures reliable opening/closing operations, ensuring safety while riding the bicycle.

Furthermore, in the present invention, since the driven member moves linearly in a reciprocating manner and does not rotate, there is no need to use a flexible cable as shown in FIG. 1 as the drive wire. A straight conductive member can also be used.

Therefore, the structural costs of the component parts are low, and the cost of the entire device can be reduced.

Furthermore, since the final reduction ratio can be increased and the motor etc. can be made smaller, the entire device can be made lighter and smaller.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a conventional example, Figs. 2 to 6 show an example of an embodiment of the present invention, and Figs. 2 and 3 are a side view and a side sectional view of a beam tractor-pull headlight. , FIG. 4 and FIG. 5 are partially cutaway plan and perspective views of the drive device, and FIG.
The figure is a circuit diagram of the auto-stop mechanism. In the above figure, each symbol indicates the following. 1... Headlight body, 2... Case, 3...
Shaft, 4... Lever, 5... Drive wire, 10...
Drive device, 11... Case, 12... Motor, 13
... Reduction mechanism, 14 ... Driven member, 15 ... Driving force conversion mechanism, 20 ... Auto stop mechanism, 2L21
'... Conductive member, 21a, 21'a... Notch, 2
2... Operation switch, 21b, 21'b... Contactor.

Claims (1)

[Scope of utility model registration request] A motor 12, a male threaded member 15a interlocked with the motor 1.2 via a speed reduction mechanism 13, and a female threaded member 15b screwed into the male threaded member 15a are fixed, and rotation of the motor 12 causes the male threaded member 15a and the female thread to A driven member 14 that performs reciprocating linear motion by screwing together a member 15b, and the driven member 1
An arm 16 is pivotally supported on the upper part of the headlight body 4 and locks a wire 5 at both ends for opening and closing the left and right headlight bodies 1, and an energizing circuit to the motor 12 is opened when the headlight body 1 is in the open or closed position. The conductive member 21 for open position and the conductive member 21' for closed position are formed with notches 21a and 21'a and are arranged in the moving direction of the driven member 14, and the conductive member 2L21' fixed to the driven member 14 and slidable on the conductive member 2L21'. An open position contact 21 that contacts the motor 12 and forms an energizing path to the motor 12.
A drive device for a tractor-pull headlight, characterized in that it is equipped with a contact element 21'b for a closed position.