JPH0576922U - Outside mirror with water droplet scattering device - Google Patents

Abstract

(57) [Summary] [Purpose] In an outside mirror with a water droplet scattering device,
The purpose is to coagulate and enlarge water droplets such as raindrops adhering to the mirror surface to effectively remove the water droplets from the mirror surface. [Structure] A vibrator is attached to the vibration transmitter with an adhesive 3 on the entire surface of the vibrator 1 and the entire circumferential surface in the central recess of the vibration transmitter 2 to which the vibrator is attached to the mirror surface of the outside mirror.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an outside mirror for an automobile, and more particularly, to an outside mirror with a water droplet scattering device that can obtain a good visual field by vibrating the mirror with an ultrasonic transducer and scattering water droplets attached to the mirror surface. The present invention relates to a bonding structure of a vibration transmitter and an ultrasonic transducer (hereinafter referred to as a transducer).

[0002]

[Prior Art]

 Conventionally, this type of outside mirror with a water droplet scattering device has made water droplets such as raindrops adhering to the mirror surface vibrate the mirror surface in the direction perpendicular to the mirror surface to make it mist and scatter. There was a problem that some of the water droplets that had become red could reattach to the mirror and worsen the field of vision.

[0003]

[Problems to be solved by the device]

 In order to eliminate these drawbacks, the present invention provides a transverse vibration mode component that vibrates in a direction parallel to the plane of the mirror surface, instead of the conventional vibration mode of the mirror surface that was in the longitudinal vibration mode. The water droplets cause lateral cracks, and when the water droplets collide with each other, the water droplets grow to a large size, and the water droplets are enlarged to drop downwards on the mirror surface. It is an object of the present invention to provide an outside mirror with a water droplet scattering device that can obtain a good field of view without reattachment to the mirror surface.

[0004]

[Means for Solving the Problems]

 The present invention is to vibrate the vibrator with an adhesive when the vibrator and the vibration transmitter are adhered to the vibration transmitter to which the vibrator is attached to the rear surface of the mirror of the outside mirror with water droplet scattering device. It is configured to reduce the vibration mode in the direction perpendicular to the mirror surface by adhering it over the entire surface, including the circumferential surface of the child, to increase the vibration component in the direction parallel to the surface of the mirror surface and It is characterized by promoting the growth of water droplets and causing them to fall.

That is, according to the present invention, a mirror housing in which a mirror body holding a mirror is tiltably supported, a vibrator fixed to the rear surface of the mirror, and a vibrator disposed in the mirror housing are vibrated. In an outside mirror with a water droplet scattering device equipped with a signal oscillating circuit for applying and an amplifying circuit, in order to bond the vibrator to a vibration transmitter having a recess for bonding the vibrator in the center that is attached to the back surface of the mirror, The outside mirror with a water droplet scattering device is characterized in that it is integrally bonded to the vibration transmitter by the surface of the vibrator and the circumferential surface.

[0006]

[Action]

 The ultrasonic transducer is driven in a radial vibration mode that vibrates in the radial direction of a plate-shaped transducer, but in the past it was bonded to the vibration transmitter only on one side of the oscillator, so vibration to the vibration transmitter Transmission of the component in the surface direction was partly transmitted to the vibration transmitter, but it was transmitted to the vibration transmitter over the entire circumference of the vibrator to the circular concave mounting part of the vibrator. The oscillator is configured to be fixed together with an adhesive.As for the radial vibration mode of the vibrator, the vibration mode in the thickness direction of the vibrator is reduced, and the longitudinal vibration wave vibrating parallel to the mirror surface of the vibration transmitter is better. It will be big.

[0007]

【Example】

 FIG. 1 is a cross-sectional view of a vibration transmitter according to the present invention when a vibrator is bonded, and FIG. 2 is a cross-sectional view showing a bonding surface between a conventional vibration transmitter and a vibrator. 3 shows an admittance loop when the driving frequency of the outside mirror with a water droplet scattering device according to the present invention is changed, and FIG. 4 is an admittance loop corresponding to FIG. When driving the outside mirror with a water droplet scattering device in the range of the lateral vibration modes A and C areas of the admittance loop shown in Figs. 3 and 4, the raindrops on the surface of the mirror wobble. Then, water droplets collide with each other to grow, overcome the surface tension of the mirror surface, and fall below the mirror surface. Also, in the admittance characteristics of the entire vibration system with respect to the frequency when the conventional adhesive vibrator is driven as shown in FIG. 4, when the vibrator is driven in the longitudinal vibration mode B region, water droplets are generated in the thickness direction of the vibrator. Since the vibration component is excellent, and the input power to the vibrator also becomes large, the water droplets on the mirror surface are sprayed in the form of mist, and part of it reattaches to the mirror. Therefore, in the outside mirror with a water droplet scattering device of the present invention, when the drive transmission member and the vibrator are bonded, the vibration transmission member should be bonded to the upper end of the circumferential surface of the vibrator as shown in FIG. The admittance characteristics shown in Fig. 3 can be obtained by adhering to any part of the vibration transmitter, the lateral vibration component of the mirror is increased to increase the water droplets, and the fog adheres to the mirror surface. It can be used as an outside mirror with a water droplet scattering device so that the surface does not fog.

[0008]

[Effect of the device]

 As described above, when the vibrator according to the present invention is bonded to the vibration transmitter, the circular concave portion at the center of the vibration transmitter to which the vibrator is bonded is bonded and attached to the surface and the circumferential surface of the vibrator by an adhesive. An outside mirror with a water droplet scattering device, which has high admittance characteristics with high resistance at the central resonance point, and has the advantage that the water droplets collide with each other and grow and fall due to sideways shaking of the water droplets, and there is no fog on the mirror surface Can be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing adhesion between a vibrator and a vibration transmitter of an outside mirror with a water droplet scattering device according to the present invention.

FIG. 2 is a cross-sectional view showing adhesion between a conventional vibrator and a vibration transmitter.

FIG. 3 is an admittance characteristic diagram of the outside mirror when the vibration transmitter of FIG. 1 is attached to the rear surface of the mirror.

FIG. 4 is an admittance characteristic diagram in FIG.

[Explanation of symbols]

 1 Vibrator 2 Vibration transmitter 3 Adhesive A, C area Horizontal vibration mode B area Longitudinal vibration mode

Claims (1)

[Scope of utility model registration request] 1. A signal for applying a vibration to a mirror housing which holds a mirror and which tiltably supports a mirror body, a vibrator fixed to a rear surface of the mirror, and a vibrator arranged in the mirror housing. In an outside mirror with a water droplet scattering device equipped with an oscillation circuit and an amplification circuit, in order to bond a vibrator to a vibration transmitter having a recess for bonding the vibrator in the center to be attached to the rear surface of the mirror, An outside mirror with a water droplet scattering device, which is integrally bonded to a vibration transmitter by a surface and a circumferential surface.