JPH0574417B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning technology for an automotive headlamp cleaner that spouts cleaning water for cleaning the headlamp of an automobile while the vehicle is running. It concerns the nozzle.

[Conventional technology]

Traditionally, headlamp cleaners have been used to clean mud, insects, etc. that adhere to the front of a car's headlamp while driving, and restore the headlamp's light emitting performance.It has a structure that sprays high-pressure cleaning water from a nozzle toward the headlamp surface. are used.

[Problem that the invention seeks to solve]

However, in recent years, headlamps have become a part of car design, and so-called proper headlamps have become mainstream.However, in consideration of car design and air resistance, thin and wide headlamps are becoming more common. There is. For this reason, the cleaning water that is sprayed diffusely from the headlamp cleaner does not reach the entire headlamp surface, leaving some residue behind.However, if this could be made to wash away the entire headlamp, it would scatter around the headlamp without hitting it. This has resulted in problems such as an increase in the amount of cleaning water used, a decrease in cleaning efficiency, and a difference in cleaning between the center and the outer periphery.

The present invention was devised in view of the above-mentioned problems, and it controls the spray shape and spray density so as to spray the cleaning water diffusely over the surface shape of the wide-angle headlamp. It is an object of the present invention to propose a wide-angle nozzle for a headlamp cleaner that can uniformly clean the entire surface of a headlamp by effectively using limited cleaning water.

[Means for solving problems]

The wide-angle nozzle for a headlamp cleaner according to the present invention is used in a headlamp cleaner that sprays high-pressure washing water onto the headlamp of an automobile to restore its lighting efficiency, and the headlamp cleaner has a cylindrical wall of a short cylindrical portion communicating with a washing water supply section. A vortex forming cavity is formed by the spherical inner wall surface of the top wall formed at the end of the short cylindrical part, and a water cutter is formed on one side of the vortex forming cavity at the upper end of the front half of the short cylindrical part. A cleaning water injection port is opened, which is connected at both ends to an edge and a fountain direction regulating edge formed in a beak shape corresponding to the water incisal edge and whose front edge protrudes from the outer diameter surface of the water incisal edge and has an appropriate curvature. The gist of the present invention is that the fountain direction regulating edge is inclined at an appropriate opening angle so as to face the water cut edge and the fountain angle.

Further, a bead protrusion projecting inward may be formed on the inner edge of the water incision to form a vortex forming cavity.

[Effect]

The above-mentioned wide-angle nozzle for a headlamp cleaner supplies high-pressure cleaning water at an appropriate pressure to the vortex-forming cavity, so that the cleaning water supplied to the vortex-forming cavity is drained by the water flow flowing out from the cleaning water jet port. A high-speed vortex is formed in the washing water separated at the edge near the washing water injection port. This vortex collides with the spherical inner wall surface and is forcibly changed direction, becoming a turbulent flow in which the center of the vortex constantly vibrates, and this turbulence causes the water pressure near the cleaning water injection port to pulsate. The cleaning water that is ejected from the cleaning water injection port is rapidly decompressed and becomes water droplets, and is also ejected in the injection direction regulated by the arc-shaped water incisal edge and the water fountain direction regulating edge. collides with the front of the vehicle at high speed. At this time, the beak-shaped fountain direction regulating wall constituting the washing water injection port extends in the washing water injection direction and is configured with a predetermined opening angle with the water cut edge, so that the washing water is sprayed in an upward diagonal direction. Water is controlled to be ejected onto the thin, wide, ultra-wide-angle headlamp surface facing the washing water injection port, and at the same time, uniform cleaning is achieved by controlling the ejection density of droplets. Furthermore, since the bead protrusion protruding inward is formed on the inner edge of the water cut edge to constitute the vortex forming cavity, generation of vortex can be facilitated.

〔Example〕

Embodiments of the wide-angle nozzle for headlamp cleaners according to the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment, and 1 is a nozzle fixed to a shaft hole 3 of a spherical base member 2 having a spherical outer periphery so that the shaft center O is continuous with the shaft hole 3. The spherical base member 2 is fitted into a spherical recess 14 formed at the end of a water pipe 13 fixed to a nozzle case 12 so as to be able to adjust a fixed angle. case 12
A headlamp cleaner is constructed by fixing the headlamp cleaner. The nozzle member 1 has a shaft hole 3 of the spherical base member 2.
A cleaning tube opening on one side of the end of the nozzle member 1 is provided with a protruding cylindrical wall 4 concentric with the axis O continuous with the cylindrical wall 4, and a spherical inner wall surface 6 of the top wall 5 formed at the end of the nozzle member 1. A vortex forming cavity 8 is formed inside the water injection port 7 . The front end of the top wall 5 has an appropriate curvature and constitutes a beak-like protrusion 5a projecting from the outer diameter surface of the nozzle member 1, and has an axis O continuous to the vortex forming cavity 8.
The fountain direction regulating edge 9 is formed with an oblique angle α. Further, 10 corresponds to the fountain direction regulating edge 9,
It is a cut edge formed in the front half of the nozzle member 1,
It is cut approximately perpendicularly to the axis O, and the water cutting edge 10 and the water fountain direction regulating edge 9 are connected at both ends to form the front shape of the cleaning water injection port 7.

The wide-angle headlamp cleaner nozzle configured as described above supplies high-pressure cleaning water at an appropriate pressure to the vortex forming cavity 8 through the water guide tube 13, so that cleaning water in the form of water droplets is jetted out from the cleaning water injection port 7. However, it is possible to achieve an ultra-wide angle in which the vertical diffusion angle is α and the horizontal diffusion angle is β.

That is, when cleaning water is supplied to the vortex forming cavity 8, the upper cleaning water that is divided at the inner edge of the fountain direction regulating edge 9 by the water flow flowing out from the cleaning water jetting port 7 flows at high speed near the cleaning water jetting port 7. At the same time as a vortex is formed, the vortex separated by the fountain direction regulating edge 9 collides with the spherical inner wall surface 6 and is forcibly changed direction, resulting in a turbulent flow in which the center of the vortex constantly vibrates. . Due to the turbulent flow, the water pressure near the cleaning water jetting port 7 becomes pulsating, and the cleaning water jetted from the cleaning water jetting port 7 is rapidly depressurized and becomes water droplets. At the same time, the water is ejected in the injection direction regulated by the fountain direction regulating edge 9 and the water cutting edge 10, and collides with the front surface of the headlamp at high speed. When this droplet-shaped cleaning water is sprayed onto the headlamp surface, it exhibits an excellent effect of forcibly peeling off dirt adhering to the surface to be cleaned and at the same time blowing it away.

The wide-angle nozzle for a headlamp cleaner according to the present invention is characterized in that a spray direction regulating edge 9 is formed on the upper edge of the cleaning water injection port 7 and protrudes like a beak from the water cutting edge 10 so as to face the spray angle. The side shape can be modified in various ways as described below without changing the basic configuration.

First, the wide-angle nozzle for a headlamp cleaner shown in _FIG .
It has a spherical inner wall surface 6 on its inner surface, and a swirl forming cavity 8 in which a bead protrusion 11 projecting inward is formed on the inner edge of a water cut edge 10. When the bead protrusion 11 is formed in the vortex forming cavity 8 in this manner, the cleaning water supplied into the vortex forming cavity 8 is first divided by the bead protrusion 11, and then the divided vortex flows on the spherical inner wall surface. 6 and the vortex center vibrates in two stages, so turbulence can be efficiently generated.

Further, the wide _- angle nozzle for a headlamp cleaner shown in FIG. Large protruding bead protrusion 1
1 and a vortex forming cavity 8 formed therein.

〔Effect of the invention〕

Since the wide-angle nozzle for a headlamp cleaner according to the present invention is configured as described above, the cleaning water in the form of water droplets is accurately diffused onto the cleaning surface of the opposing headlamp, and is evenly sprayed, resulting in a thin design. The cleaning efficiency can be improved by suppressing the splashing of cleaning water outside the wide headlamp, and at the same time, leaving no residue after washing, and the effects after implementation of the present invention are extremely large.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a cleaning water injection nozzle showing a first embodiment of the wide-angle nozzle for a headlamp cleaner according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view thereof, and FIG. 5 is a partially cutaway side sectional view showing the installation state of the wide-angle nozzle for headlamp cleaner.
This figure and FIG. 6 are side sectional views showing other embodiments in which the washing water jetting directions are different. 1... Nozzle member, 2... Spherical base member, 5...
Top wall, 6... Spherical inner wall surface, 7... Cleaning water injection port, 8... Whirlpool forming cavity, 9... Fountain direction regulating edge, 10... Water cut edge, 11... Bead protrusion.

Claims (1)

[Scope of Claims] 1. A headlamp cleaner that sprays high-pressure washing water onto the headlamp of an automobile to restore its light emission efficiency, comprising: a cylindrical wall of a short cylindrical portion communicating with a washing water supply section; and the short cylindrical portion. A vortex forming cavity is formed by the spherical inner wall surface of the top wall formed at the end of the vortex forming cavity, and on one side of the vortex forming cavity, a water cut edge formed at the upper end of the front half of the short cylindrical part and the water cutter are formed on one side of the swirl forming cavity. A cleaning water injection port is opened in which the front edge corresponds to the edge and is connected at both ends to a beak-shaped fountain direction regulating edge that protrudes from the outer diameter surface of the water cutting edge and has an appropriate curvature; A wide-angle nozzle for a headlamp cleaner, characterized in that the regulating edge is inclined so as to face the water cutting edge and the fountain angle, and has an appropriate opening angle. 2. The wide-angle nozzle for a headlamp cleaner according to claim 1, further comprising a vortex forming cavity in which an inwardly protruding bead projection is formed on the inner edge of the water cutting edge.