JPH0414291Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application>> The present invention scatters water droplets attached to the mirror surface by varying the amplitude position on the mirror surface of a vehicle outside mirror, especially a vibrator. , relates to a vehicle outside mirror with a water droplet scattering device that provides good visibility.

《Prior Art》 Conventionally, the invention aimed at removing water droplets adhering to the outside mirror and obtaining good rear visibility has included an outside mirror as disclosed in Japanese Utility Model Application No. 53-92954. Equipped with a wiper device for wiping the mirror surface of side mirrors, developed in 1983.
There are known devices such as those disclosed in Japanese Patent No. 34742 that use airflow during running to scatter water droplets attached to a mirror surface.

<<Problems to be solved by the invention>> However, in such conventional technologies, for example, in the former case, the wiper device is attached, which not only increases the size of the entire outside mirror, but also obstructs the field of view due to the wiper. As the area became smaller, it was sometimes difficult to obtain a wide rear field of view. Moreover, in the latter case, there was a problem that the function could not be fully demonstrated while the vehicle was running at low speed or stopped.

For this reason, the applicant of this application first applied for Utility Application No. 175251.
In this specification, a device was proposed that uses a vibrator to scatter water droplets on the mirror surface. In this device, as shown in FIG. 5, since the frequency at which the vibrator 50 is operated is constant, There was a point a on the surface where there was no vibration, and there was a problem with the efficiency of scattering water droplets.

<Means for Solving the Problems> In order to solve the problems of the prior art described above, the present invention provides a mirror body that holds a mirror, a mirror housing that rotatably supports the mirror body, and In a vehicle outside mirror that includes a base that supports a mirror housing and a water droplet scattering device disposed inside the mirror housing, the waterdrop scattering device includes a vibrator attached to the back surface of the mirror and a water droplet scattering device disposed on the mirror surface or the mirror. It includes a raindrop sensor attached to the housing surface, an oscillator and amplifier that vibrate the vibrator, and a frequency converter that converts the frequency of the oscillator.

《Operation》 An oscillator is used to amplify the generated frequency and vibrate the vibrator attached to the back surface of the mirror, while converting this frequency and changing the amplitude position of the frequency on the mirror surface. Vibration is transmitted to the entire surface.

<<Example>> Hereinafter, an example of the present invention will be described based on the accompanying drawings.

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a schematic front view of an outside mirror for a vehicle, FIG. 2 is a vertical sectional view thereof, and FIG. 3 is a water droplet. FIG. 4, a block diagram of the scattering device, is an explanatory diagram showing fluctuations in the amplitude position of the vibrator.

This outside mirror includes a mirror body 2 that holds a mirror 1, a mirror housing 3 that rotatably supports the mirror body 2 via a pivot (not shown), and a mirror housing 3 that rotatably supports the mirror housing 3. It is equipped with a base 4. The base 4 is fixed to a vehicle body (not shown).

Mirror 1 is a plane mirror with a vibrator 5 on the back side.
is installed. The vibrator 5 is made of, for example, a piezoelectric element, and is attached to the back surface of the mirror 1 in close contact with a double-sided adhesive tape or the like.

A mounting part 31 for an amplifier 8 for vibrating the vibrator 5 at high speed is provided on the inner surface of the mirror housing 3, and the amplifier 8 is mounted on the screw 3 at the mounting part 31.
It is fixed by 2. Further, an oscillator 6 to which the amplifier 8 is connected is installed inside the mirror housing 3 on the base 4 side. This oscillator 6
For example, a frequency converter 7 that converts the frequency generated by the oscillator 6 and can select any frequency between 7000c/s and 10000c/s is provided.
is provided.

Further, a raindrop sensor 9 is attached to the upper wall 33 of the mirror housing 3 so as to close the hole 34. This raindrop sensor 9 is connected to the oscillator 6 by a cord 91. The oscillator 6 is connected by a cord 81 to a switch SW in the room.

The vibrator 5, oscillator 6, frequency converter 7, amplifier 8 and raindrop sensor 9 are connected as shown in the block diagram of FIG. That is, the power supply V
The oscillator 6, the frequency converter 7, the amplifier 8, and the vibrator 5 are connected in series in this order via a switch SW to the positive pole side of the oscillator, and the negative pole side is grounded. On the other hand, raindrop sensor 9
is connected to the oscillator 6, and a relay L is connected to the oscillator 6 in parallel with the switch SW.

Therefore, when the switch SW in the vehicle interior is turned on, the raindrop sensor 9 is activated by the relay L, and when raindrops are detected, the oscillator 6 is activated by the output signal. The vibration frequency generated by the oscillator 6 is converted at a constant period by a frequency converter 7, and is amplified by an amplifier 8.
The vibrator 5 is vibrated at high speed. As shown in FIG. 4, the vibration of the vibrator 5 is transmitted in such a way that the amplitude of the vibration changes sequentially, and the non-vibrating portion a of the mirror surface moves to the position a', causing the entire mirror to vibrate. Scatter all the water droplets that are attached to the surface.

《Effects of the invention》 As mentioned above, the present invention solves the current situation by attaching a vibrator to the back of the mirror and arranging water droplet scattering devices such as an oscillator, frequency converter, and amplifier inside the mirror housing. Water droplets on the mirror surface can be removed without increasing the size of the mirror, and by converting the vibration frequency of the oscillator, vibrations are transmitted to the entire mirror surface and water droplets are sufficiently scattered. Eliminates uneven water droplets on the mirror surface. Furthermore, these operations are automatically performed by a raindrop sensor, and waterdrops on the mirror surface are removed according to external conditions.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a vehicle outside mirror showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the outside mirror shown in FIG. 1, and FIG. 3 is a water droplet scattering device according to the present invention. FIG. 4 is an explanatory diagram showing the state of vibration of the vibrator according to the present invention, and FIG. 5 is an explanatory diagram showing the state of the conventional vibrator. 1... Mirror, 2... Mirror body, 3... Mirror housing, 4... Base, 5... Vibrator,
6...Oscillator, 7...Frequency converter, 8...Amplifier, 9...Raindrop sensor.

Claims (1)

[Scope of utility model registration request] a mirror body holding a mirror; a mirror housing rotatably supporting the mirror body; and a base supporting the mirror housing;
In the outside mirror for a vehicle, the water droplet scattering device includes a water droplet scattering device disposed in the mirror housing, and the waterdrop scattering device includes a vibrator attached to the back surface of the mirror, and a vibrator attached to the surface of the mirror or the surface of the mirror housing. comprising an attached raindrop sensor, an oscillator and an amplifier that vibrate the vibrator, and a frequency converter that converts the frequency of the oscillator, and by operating the frequency converter and converting the frequency of the oscillator, An outside mirror for a vehicle characterized by varying the amplitude position of the mirror surface.