JPH0426908B2 - - Google Patents

Abstract

PURPOSE:To eliminate a part left unwashed by suppressing the upward scattering of washing water and to enhance washing efficiency, by forming the plane shape of the jet orifice opened to the end part of a cylindrical part into a structure having a special shape. CONSTITUTION:The washing water supplied to a vortex stream forming cavity part 7 is formed into water droplets by the water stream flowing out from a washing water jet orifice 6 and the high speed vortex stream divided by a drain edge 8 and formed in the vicinity of said jet orifice 6. At this time, since the drain edge 8 of the washing water jet orifice 6 is formed into a plane shape present at the thick wall internal position of a short cylindrical part 1 constituting a curved edge 9 and said jet orifice 6 is opened in the direction almost right-angled to the water passage of the short cylindrical part 1, the upward scattering of washing water is suppressed by the overhang of the drain edge 8 from the water passage and the action drawing down the upper edge part A of a jet pattern is developed by said protruded part. Therefore, the injection of washing water can be controlled to a thin and wide shape conforming to the surface shape of a super-wide-angle head lamp and the injection of water droplets is also controlled to enable uniform washing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning technique for an automobile headlamp cleaner that spouts washing water for washing the headlights of an automobile while the automobile is running. It concerns wide-angle nozzles.

[Conventional technology]

Conventionally, 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.

[Problems to be Solved by the Invention] However, in recent years, headlamps have been incorporated as a part of car design, and so-called proper headlamps, which have different lens shapes for each car, have become mainstream. In consideration of air resistance, thin and wide headlamps are becoming more common. For this reason, the cleaning water sprayed out from the headlamp cleaner does not reach the entire headlamp surface, leaving some residue behind.However, if the entire headlamp could be washed away, the water would scatter around the headlamp without hitting the headlamp. This causes 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 controls the spray shape and spray density so that cleaning water is sprayed diffusely over the surface shape of an ultra-wide-angle headlamp, and at the same time, eliminates the problem of leaving unwashed parts particularly in the corners. To provide an ultra-wide-angle nozzle for a headlamp cleaner that can uniformly clean the entire surface of a headlamp by effectively using the limited amount of cleaning water without causing any problems.

[Means for solving problems]

That is, the ultra-wide-angle nozzle for a headlamp cleaner according to the present invention has a jet nozzle that opens at the end of the cylindrical part and has a special planar structure, and the high-pressure cleaning droplets are sprayed from the nozzle. In a headlamp cleaner that controls and diffuses water into a predetermined shape, the headlamp cleaner sprays high-pressure washing water onto the headlamp of an automobile to recover the light emitting efficiency, and the cylindrical wall of a short cylindrical part that communicates with a washing water supply part; and the end wall surface of the top wall formed in the short part of the short cylinder part,
A water cut edge formed at the front end of the top wall, a curved edge formed at the upper end of the front half of the short tube portion corresponding to the water cut edge, and side edges connecting the curved edge and the water cut edge at both ends, respectively. The main feature is that the cleaning water injection port is opened with a substantially rectangular front shape, and the water cutting edge is configured in a planar shape that exists within the wall thickness of the short cylindrical portion forming the curved edge.

[Effect]

The above ultra-wide angle nozzle for headlamp cleaner is
By supplying high-pressure washing water at an appropriate pressure to the vortex-forming cavity, the washing water supplied to the vortex-forming cavity is divided into upper washing water at the water cut edge by the water flow flowing out from the washing water jet port. A high-speed vortex is formed near the cleaning water injection port. Due to this vortex, when the cleaning water jetted from the cleaning water jetting port is rapidly depressurized, it becomes water droplets and is regulated by the arc-shaped water incisal edge, curved edge, and side edge. The fuel ejects in the direction of the jet and hits the front of the headlamp at high speed. At this time, the water cutting edge is configured in a planar shape that exists within the wall thickness of the short cylindrical portion constituting the curved edge, and is opened in a direction approximately perpendicular to the water passageway of the short cylindrical portion, so that the water cutting edge from the water passageway is The overhanging edge suppresses upward splashing of cleaning water, pulls down the upper edge of the spray pattern, and controls spray to a thin, wide, ultra-wide-angle headlamp surface shape, and at the same time controls droplet spray density for uniform cleaning. .

〔Example〕

Hereinafter, embodiments of the ultra-wide-angle nozzle for headlamp cleaners according to the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment.

In the drawings, 1 is a short cylindrical portion that protrudes continuously from the axis O of a spherical base 2 having a spherical outer periphery,
The spherical base 2 is fitted into a spherical recess 52 formed at the end of a nozzle case 51 in a fixed angle adjustable manner, and constitutes a headlamp cleaner 50 for fixing the cleaning water injection nozzle to a bumper a of an automobile or the like. It consists of The short cylindrical part 1 has an axis O from the end of the spherical base 2.
The cylindrical wall 3 protruding from the cylindrical wall 3 and the end wall surface 5 of the top wall 4 formed at the end of the short cylindrical portion 1 form a vortex forming cavity in which a cleaning water injection port 6 is opened on one side of the end of the short cylindrical portion 1. 7. The front end of the top wall 4 constitutes a tip starting point 4a having a larger curvature than the inner diameter of the cylindrical wall 3, with the starting point 4a being within the wall thickness t in front of the short cylindrical portion 1, and the side edges 4b, 4b The top wall 4 has a planar shape that intersects the outer diameter of the portion 1 at approximately 180 degrees, and the front end of the top wall 4 forms a water cutting edge 8 having an appropriate hanging width h. It forms the upper edge. Further, reference numeral 9 denotes a curved edge formed at the upper end of the front half of the short cylindrical portion 1, corresponding to the water cut edge 8, and the curved edge 9
and the water cutting edges 8 are connected at both ends via side edges 10, respectively, to form a cleaning water injection port 6 having a substantially flat rectangular front shape.

The ultra-wide-angle nozzle for a headlamp cleaner having the above configuration has a vortex forming cavity 7 through a nozzle case 51.
By supplying high-pressure washing water at the appropriate pressure,
Cleaning water in the form of water droplets is ejected from the cleaning water injection port 6, and the horizontal diffusion angle β is 140 degrees, and the vertical diffusion angle γ is 140 degrees.
A super wide angle of 21 degrees can be achieved. That is, the cleaning water supplied to the vortex forming cavity 7 is separated from the water flow flowing out from the cleaning water injection port 6 by the water cutting edge 8, and the high speed vortex formed near the cleaning water injection port 6 causes the cleaning water to flow out from the washing water injection port 6. The cleaning water sprayed from 6 becomes water droplets. At this time, the water cutting edge 8 of the cleaning water injection port 6 is configured in a planar shape that exists within the wall thickness of the short cylindrical portion 1 constituting the curved edge 9, and is arranged in a direction substantially perpendicular to the water passage of the short cylindrical portion 1. Since it is open to the side, the overhanging portion of the water cutting edge 8 from the water flow channel suppresses the upward splashing of the washing water, and exerts the effect of pulling down the upper edge A of the spray pattern as shown in FIG. Cleaning water can be sprayed onto a thin, wide, ultra-wide-angle headlamp surface, and at the same time, the spray density of droplets can be controlled to achieve uniform cleaning.

Next, FIGS. 6 and 7 show other embodiments of the present invention.

That is, in this embodiment, the water cutting edge 8 of the cleaning jet port 6
is constituted by the front edge of the top wall 4, and the hanging width h is set to zero, and the planar shape of the top wall 4 is the same as in the first embodiment. Extend the tip starting point 4a of the top wall 4 from within the thickness, and
b, 4b are configured to intersect with the outer diameter of the short cylindrical portion 1 at a position of approximately 180 degrees, and the overhanging portion of the water cutting edge 8 from the water passageway suppresses upward splashing of washing water and prevents the spraying. It acts to pull down the upper edge of the pattern.

〔Effect of the invention〕

Since the ultra-wide-angle nozzle for a headlamp cleaner according to the present invention is constructed as described above, the upward splashing of the washing water in the form of water droplets is suppressed, and the upper edge of the spray pattern is pulled down.
It has excellent features such as being widely diffused in the width direction, leaving no residue after washing in thin and wide headlamps, and allowing the cleaning efficiency to be adjusted.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a headlamp cleaner constructed using a cleaning water injection nozzle according to the present invention;
FIG. 2 is a front view of a cleaning water injection nozzle showing a first embodiment of the ultra-wide-angle nozzle for a headlamp cleaner according to the present invention, FIG. 3 is a plan view of the same, and FIG. Figures 5 and 5 are jet pattern diagrams, Figure 6 is a longitudinal sectional view of a main part showing another embodiment, and Figure 7 is a plan view thereof. 1... Short cylindrical part, 2... Spherical base, 3... Cylindrical part,
4...Top wall, 4a...Start point, 4b...Side edge, 5
... End wall surface, 6 ... Cleaning water injection port, 7 ... Vortex forming cavity, 8 ... Water cut edge, 9 ... Curved edge, 10 ...
Lateral edge.

Claims (1)

[Claims] 1. In a headlamp cleaner that sprays high-pressure washing water onto the headlamp of an automobile to restore its light emission efficiency, a headlamp cleaner configured on the cylindrical wall of a short cylindrical portion that communicates with the washing water supply section and on the end of the short cylindrical portion. a vortex forming cavity formed of an end wall surface of the top wall, a water cut edge formed at the front end of the top wall, and a curved edge formed at the upper end of the front half of the short cylindrical portion corresponding to the water cut edge; A cleaning water injection port having a substantially rectangular front shape is opened by the side edges connecting the curved edge and the water cut edge at both ends, and the water cut edge is positioned within the wall thickness of the short cylindrical portion forming the curved edge. An ultra-wide-angle nozzle for a headlamp cleaner characterized by being configured in an existing planar shape.