JPH0426907B2 - - Google Patents

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]

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 light emitting performance of the headlamp by jetting high-pressure cleaning water from a nozzle toward the headlamp surface. structure is 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, which have different lens shapes for each car, have become mainstream. There are more and more head lamps. 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, in the ultra-wide-angle nozzle for a headlamp cleaner according to the present invention, the cutting angle and planar shape of the nozzle opening at the end of the cylindrical part are structured to have a special shape, and the droplets ejected from the nozzle are formed into a special shape. In a headlamp cleaner that sprays high-pressure washing water into the headlights of automobiles to restore the lighting efficiency, the short cylindrical portion that communicates with the washing water supply section is For a vortex-forming cavity consisting of a cylindrical wall and an end wall surface of a top wall formed at the end of the short cylindrical portion, a water cut edge formed at the front end of the top wall, and a water cut edge corresponding to the water cut edge. The curved edges formed at the upper end of the front half of the short cylindrical portion are each cut at an angle with respect to the axis of the short cylindrical portion, and the front shape is approximately smaller than the side edges where the curved edges and the cut edge are connected at both ends. While opening the rectangular cleaning water injection port,
The incisal edge is formed by a tip of the top wall having a radius of curvature larger than the inner diameter of the curved edge, and the tip of the incisal edge starts at the inner diameter position of the curved edge and ends at the outer diameter position of the curved edge. The main feature is that the washing water injection port is configured to have a planar shape, and a regulating wall is formed at the opening shoulder of the washing water injection port.

[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 cut edge forms a planar shape of the cleaning water injection port starting from the inner diameter position of the curved edge and terminating the ridgeline at the outer diameter position of the curved edge,
A regulating wall is formed at the opening shoulder of the washing water injection port, and since the opening shoulder is lowered due to the diagonal cutting structure, the regulating wall is directed upward at the corner of the washing water injection port. At the same time, both sides of the spray pattern are pulled down to control the spray to a thin and wide ultra-wide-angle headlamp surface shape, and at the same time, uniform cleaning is achieved by controlling the spray density of droplets.

〔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 the nozzle case 51 in a fixed angle adjustable manner, and constitutes a headlamp cleaner for fixing the cleaning water injection nozzle to a bumper a of an automobile or the like. Become. The short cylindrical portion 1 has a cylindrical wall 3 bored from the end of the spherical base 2 to the axis O, and an end wall surface 5 of the top wall 4 formed at the end of the short cylindrical portion 1. A vortex forming cavity 7 having a cleaning water injection port 6 opened on one side is configured. 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, and the starting point 4a is in contact with the inner diameter position (arrow A) of the cylindrical wall 3. The side edges 4b, 4b extending from the top wall 4 form a planar shape that intersects the outer diameter of the short cylindrical portion 1 at a position of approximately 180 degrees, and the front end of the top wall 4 forms a cut edge 8 for cleaning. It forms the upper edge of the water injection port 6. 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 cut edge 8 are connected to each other at both ends with the side edges 10 interposed therebetween. The side edge 10 is formed by a guide wall 12 cut at an angle from the inner diameter to the outer diameter of the short cylindrical portion 1. A regulating wall 11 is formed on both shoulders of the washing water injection port 6 so that both ends of the water cutting edge 8 overlap the ends of the curved edge 9 due to the relative position in a plane. Further, both ends of the cut edge 8 and the curved edge 9 constitute diagonal cut portions 8a and 9a that are inclined downward with respect to the axis O of the short tube portion 1, and the inclined opening angle with respect to the axis O. It constitutes θ.
The ultra-wide-angle nozzle for a headlamp cleaner configured as described above supplies high-pressure cleaning water at an appropriate pressure to the vortex forming cavity 7 through the nozzle case 51, so that the cleaning water in the form of water droplets is released from the cleaning water injection port 6. Spout, horizontal diffusion angle β is 140 degrees, vertical diffusion angle γ is
A super wide angle of 21 degrees can be achieved. That is,
The cleaning water supplied to the vortex forming cavity 7 is divided into a water flow flowing out from the cleaning water injection port 6 and a draining flow 8, and the high speed vortex formed near the cleaning water injection port 8 causes the cleaning water to flow out from the cleaning water injection port 6. The cleaning water spouted from 6 becomes water droplets. At this time, the water cut edge 8 of the cleaning water injection port 6 is formed by the tip 4a of the top wall 4 having a curvature larger than the inner diameter of the curved edge 9, and the tip of the water cut edge 8 is located at the inner diameter position A of the curved edge 9. Starting point and its ridgeline 4b
are terminated at the outer diameter position of the curved edge 9 to form a planar shape that covers the short tube portion 1, and a regulating wall 11 is formed at the opening shoulder of the cleaning water injection port 6, and the diagonal cut portion 8a, Since it has a diagonal cutting structure with an angle θ according to 9a, the cleaning water is jetted obliquely upward in front of the cleaning water injection port 6, and the regulating wall 11 is connected to the cleaning water injection port 6.
The spray pattern is pulled down on both sides while suppressing the upward splashing of the cleaning water ejected from the corners, regulating the jetting direction of the cleaning water to a thin, wide-shouldered, ultra-wide-angle headlamp surface shape, and at the same time reducing the jetting density of droplets. It aims to increase cleaning efficiency by controlling and uniform spraying.

Next, FIGS. 6 and 7 show another embodiment of the present invention, in which the surface of the regulating wall 11 is further expanded in order to lower the cleaning pattern on both sides.

That is, in this embodiment, the guide wall 12 constituting the side edge 10 of the cleaning injection port 6 is constructed continuously by a tangent line extending from the inner diameter of the cylinder wall 3. Therefore, the area of the regulating wall 11 portion of the water cutting edge 8 that covers the curved edge 9 increases, and the force of the regulating wall 11 to suppress the scattering of the washing water in the upward direction at the corner that is ejected from the washing water injection port 6 is increased. It has an excellent effect of regulating the injection direction into a thin and wide shape.

〔Effect of the invention〕

Since the ultra-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 widely dispersed in the width direction and sprayed uniformly, so that it is suitable for thin and wide headlamps. It has excellent features such as not leaving any residue after washing and improving cleaning efficiency.

[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. 5 is a cross-sectional view taken along the line -- in FIG. 2, FIG. 6 is a vertical cross-sectional view of a main part showing another embodiment, and FIG. 7 is a cross-sectional view taken along the line -- in FIG. 6. 1...Short cylindrical part, 2...Spherical base, 3...Cylinder wall,
4...Top wall, 4a...Start point, 4b...Side edge, 5
... End wall surface, 6 ... Cleaning water injection port, 7 ... Whirlpool forming cavity, 8 ... Water cutting edge, 8a, 9a ... Inclined cut portion, 9 ... Curved edge, 10 ... Side edge, 11 ... ...Regulation wall, 12...Guidance wall.

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 part that communicates with the washing water supply part, and on the end of the short cylindrical part. With respect to the vortex forming cavity consisting of the 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, respectively. A cleaning water injection port having a substantially rectangular front shape is opened by the side edges which are cut at an angle with respect to the axis of the short cylindrical part and the curved edge and the water cut edge are connected at both ends, and the water cutter the edge is formed by a tip of the top wall having a radius of curvature larger than the inner diameter of the curved edge;
The tip of the water incisal edge is configured to have a planar shape that starts at the inner diameter position of the curved edge and ends at the outer diameter position of the curved edge, and a regulating wall is formed at the opening shoulder of the washing water injection port. An ultra-wide-angle nozzle for headlamp cleaners featuring