JPH0641281Y2 - Drive mechanism for rocking illuminator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a drive mechanism of a rocking illumination device for warning or the like.

(Prior Art) As shown in FIGS. 5 and 6, the drive mechanism of the conventional swing type illumination device is designed to rotate the cam A20 by the rotational drive of the motor A10, and the rotation transmission is It was directly transmitted to the cam drive gear A21 from the worm gear A11 provided at the tip of the motor A10.

In addition, tilting the required angle in the vertical direction by the cam A20 is
And a lever A22 whose position is changed by touching the circumferential surface of the cam A20, and a claw A42 provided on the tilting portion which touches the other end of the lever A22. Therefore, cam A
The position of the claw A42 is changed by the rotation of the lever 20 via the lever A22, and at the same time, the reflection plate A41 is tilted in the required angle vertical direction.

(Problems to be Solved by the Invention) However, the drive mechanism of the above-mentioned conventional rocking type illumination device is
Since the motor rotation is directly driven, the motor load is large,
Since noise is generated very much, a dedicated circuit process such as a resistor is required to rotate the motor at a low speed.

Furthermore, in order to obtain the tilt in the vertical direction, a lever of a one-point supporting component is required, which deteriorates the earthquake resistance of the entire device.

In general, it causes the motor life and mechanism life of the conventional swing type lighting device to be short, and there is concern that high reliability of the goods cannot be ensured because the goods according to the present invention are used for vehicles and motorcycles for emergency traveling. It was an urgent issue, and the solution of the above issues was an urgent task.

(Means for Solving Problems) The present invention was created in view of the above problems,
(EN) A rotary drive mechanism that reduces motor noise of an oscillating lighting device and does not use a special motor with high reliability.

Also, eliminating the one-point support parts that are disadvantageous in terms of earthquake resistance,
(EN) Provided is an oscillating lighting device which has high earthquake resistance, has a small number of parts, and is inexpensive.

(Operation) With the above configuration, the reflector is positioned behind the light bulb and separately from the light bulb, and the cam mechanism requires the horizontal tilt of the required angle about the vertical axis and the horizontal axis. Since the tilt of the angle in the vertical direction is given, these tilts in the vertical and horizontal directions are combined, and even if the light is reflected from a light bulb, a unique warning light due to various swings can be given. High-speed, low-torque rotation, rather than high-torque, was functionally satisfactory, and because one-point support parts were eliminated, it was highly earthquake-resistant and could be configured for reliable cam transmission.

(Embodiment) An embodiment of a drive mechanism of a swing type illumination device according to the present invention will be described below with reference to the drawings.

1 to 4 show the general outline of the device of the present invention, wherein 1 is a casing, 3 is a frame which is rotatably supported by a lower fixed base plate 2 with pins 4. . This pin 4 forms the center of the vertical axis.

With respect to each part of the frame 3, standing parts 32, 32 are erected on the left and right sides of the lower plate 31, and a connecting part 34 for starting is extended substantially horizontally from an upper plate 33 extending above the standing parts 32, 32. Installed, connecting part 34
Has a long groove 35 for a cam pin which will be described later.

Next, 5 is a reflector which is rotatably supported by pins 6 on the left and right upright portions 32 of the frame 3. The pins 6 and 6 form a horizontal axis with respect to the reflection plate 5. In the case of the figure, the reflection plate 5 is substantially entirely composed of a reflection portion 51 which is behind the light bulb 8 and which is curved when viewed from a plane. In order to improve the reflection characteristics, the reflection part 51 is formed at the rotation center 4 of the frame 3 so as to form a paraboloid with respect to the light bulb 8 mounted in the socket 7, and the filament of the light bulb 8 is at the focal position. Aluminum is vapor-deposited. A swing frame 52 supporting the reflector 5 and swinging together is attached to the back of the reflector 5, and a sliding piece 53 extending on the back surface of the swing frame 52 is mounted above or below the cam, It is designed to be tilted in the vertical direction. The reflector 5 is pulled upward from the lower plate 31 of the frame by the spring 9. The swing frame 52
May be integrally formed with the reflection plate 5.

Reference numeral 10 denotes a motor, which is mounted on the motor fixing base plate 21. In addition, the intermediate gears 12, 13 and the cam gear 14 are mounted on the motor fixing base plate 21. The drive mechanism will be described with reference to FIG. The drive mechanism first transmits the rotation of the motor 10 to the intermediate gear 12 by the pinion gear 11. Intermediate gear 12
Is integrally formed with the intermediate gear 13 having a small number of teeth, and the rotation of the motor 10 is decelerated and transmitted to the cam gear 14 via the intermediate gear 12 and the intermediate gear 13 to form a reduction gear mechanism. Of. As a result, the motor 10 is used at stable high-speed rotation instead of unstable low-speed rotation. Therefore, a general DC motor can be used as the motor. Further, since the respective mechanical parts are attached to the motor fixing base plate 21, the degree of fixing of the attachment is high and the vibration resistance of the rotary drive portion is improved.

The cam mechanism will be described. The cam mechanism is composed of a cam 15 and a sliding piece 53 whose position is changed by touching the peripheral surface of the cam 15, and the cam movement is directly transmitted to the sliding piece 53. The sliding piece 53 is
The peripheral surface of the cam 15 is brought into contact with the spring 9, and the movement of the reflecting plate 5 in the vertical direction is provided by the movement synchronized with the movement of the cam. Further, the sliding piece 53 has a horizontal width of the same angle as the horizontal swing of the frame 3 so as to contact the cam 15 regardless of the horizontal swing of the frame 3. Also, in order to touch the cam 15 while tilting in the vertical direction, the sliding piece 53
The tip has a semicircular cross-section, and even if the vertical angle of the contact changes, the contact can be made smoothly.

Regarding the lateral movement of the reflection plate 5, the position of the eccentric pin 16 is changed by the rotation of the cam 15, so that the frame 3 in which the long groove 35 is fitted into the pin 16 is
On the fixed base plate 2, it will swing leftward or rightward about the center of rotation 4 about the vertical axis by the required angle, and on the other hand, the sliding piece 53 that comes into contact with the peripheral surface of the cam 15 In conjunction with the cam movement, the reflector 5 can be tilted vertically and vertically about the horizontal axis by a required angle.

Such tilting of the reflection plate 5 in the vertical and horizontal directions is combined, so that the reflected light from the electric bulb 8 performs various swings and functions as a warning light.

(Effects) Since the present invention is configured as described above, the drive mechanism of the swing type lighting device according to the present invention can obtain a specific warning light by swinging the reflector in the required angle in the vertical and horizontal directions, and can also cause motor noise. It was possible to provide an orbiting illuminator with excellent vibration resistance and long equipment life, which can be used with a low-cost general motor.

In addition, the connecting part with the pin of the cam is provided on the upper part of the frame,
Since the transmission mechanism of the cam motion can be simplified, even if the reflector is large, the other mechanism parts are small, the device itself has a small volume, and the mounting volume may be small, which is practically suitable.

Therefore, at the time of use, the warning effect is increased and the running safety of the vehicle is guaranteed.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire structure of a swing type lighting device according to the present invention as seen from the back side, FIG. 2 is a perspective view as seen from the front side, and FIG. 3 shows a sliding state of a cam mechanism. Schematic diagram, fourth
FIG. 5 is a schematic view showing a cam mechanism and a reduction gear mechanism,
FIG. 6 is a front perspective view showing the overall structure of a conventional rocking illuminator, and FIG. 6 is a rear perspective view showing the frame without the frame. 1 ... Casing, 2 ... Fixed base plate 11 ... Pinion gear, 3 ... Frame 12 ... Intermediate gear, 34 ... Connection part 13 ... Intermediate gear, 35 ... Long groove 14 ... Cam gear, 5 ... Reflection Plate 15 …… Cam, 53 …… Sliding piece 16 …… Pin, 8 …… Light bulb

Claims (1)

[Scope of utility model registration request] 1. A cam mechanism for allowing a reflector placed behind a light bulb to be tilted laterally at a required angle about a vertical axis and vertically at a required angle vertically about a horizontal axis. A swinging illumination device for a warning or the like, which is interposed between a drive mechanism from a motor and a reflecting plate and swings the reflecting illumination by combining tilting of the reflecting plate in the vertical and horizontal directions. Can be obtained by directly sliding the sliding piece extending from the vertically tilting mechanism part to the peripheral surface of the cam and tilting it vertically at the required angle about the horizontal axis. The tilting is configured by supporting the reflecting plate on a frame, providing an eccentric pin on the upper surface of the cam, and inserting the pin into a long groove provided in the connecting part of the frame, and by rotating the cam, the vertical axis is centered It can be obtained by tilting the cam at the required angle in the lateral direction. Driving mechanism of the rotation via the reduction gear mechanism swing type illumination device characterized in that it is transmitted to the cam.