JPS5917397Y2 - Cleaning liquid injection device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cleaning liquid spraying device for spraying cleaning liquid onto a surface to be cleaned, such as a lamp lens surface or a window glass surface, in a headlamp cleaner device or window washer device.

A conventional headlamp cleaner device is shown in FIG. 1a.

In the figure, 1 is a headlamp, 2 is a headlamp cleaner provided on a bumper 3, and this headlamp cleaner 2 uses its injection nozzle 4 to
The cleaning liquid 5 can be injected in a conical shape from the horizontal plane to the recessed surface 1a centered on the direction A of the suppression angle θ.

By spraying the cleaning liquid 5 conically from the nozzle 4 in this way, the cleaning liquid 5 can be applied almost uniformly to the lens surface 1a.

However, if the width of the lens surface 1a becomes wider, the injection nozzle 4
If the horizontal distance l between the lens surface 1a and the center of the lens surface 1a is as small as 11 as shown in FIG. 1, or if the lens surface 1a is inclined upwards as shown in FIG. If the cleaning liquid 5 is sprayed in the same manner as in case a, the cleaning liquid 5 will not hit the lens surface 1a almost uniformly, and the cleaning liquid 5 will be applied to areas other than the lens surface 1a, resulting in poor efficiency.

This drawback also applies to window washer devices.

In order to overcome this drawback, a spray nozzle as shown in FIG. 2 was developed in view of the fact that the cleaning liquid should be sprayed in an elliptical cone shape.

That is, in FIG. 2, 6 is a cap attached to the tip of the injection nozzle 4, and this cap 6 is provided with a specially shaped cleaning liquid flow path 6a.

The cross-sectional dimension of this flow path 6a is the horizontal dimension of the injection nozzle 4.
The vertical dimension l is equal to the diameter d of the injection port 4a of the cap 6.
The diameter d is equal to the diameter d of the injection port 4a on the inner surface of the cap 6, and gradually increases as it approaches the outer surface of the cap 6.

If the cap 6 having the flow path 6a having such a shape is attached to the injection nozzle 4, the cleaning liquid 5 jetted from the injection nozzle 4 will be restricted from spreading in the lateral direction of the flow path 6a, and the cleaning liquid 5 will be restricted from spreading in the lateral direction of the flow path 6a. As a result of spreading in the vertical direction, it took on an almost perfect elliptical cone shape as shown in Figure 2, making it possible to perform ideal injection.

However, this conventional injection nozzle requires a cap having a specially shaped flow path to be attached to the tip of the injection port, resulting in a complicated structure and high cost.

In addition, in the field of painting nozzles, Japanese Patent Laid-Open No. 49
As shown in Japanese Utility Model Publication No. 52235 and Japanese Utility Model Publication No. 51-20886, there were devices that sprayed liquid in a fan shape.

In this method, an orifice is formed at the tip of the nozzle by making the flow path narrower than the diameter of the injection port, thereby making the paint sprayed from the orifice finer and distributing it uniformly over the surface to be painted. It is something.

However, in such a painting nozzle, the cleaning liquid becomes fine, so this type of painting nozzle structure is applied to a cleaning liquid injection device that attempts to spray the cleaning liquid vigorously in the form of relatively large droplets. I couldn't do that.

This idea was made in order to eliminate the drawbacks of the conventional ones as described above, and by providing a cleaning liquid shaping body with a simple structure at the tip of the nozzle, it is possible to eliminate the need for the nozzle injection port to have a complicated special shape. The object of the present invention is to provide a cleaning liquid injection device that can shape cleaning liquid into an elliptical cone shape.

An embodiment of this invention will be described below with reference to the drawings.

3 to 8 show a cleaning liquid injection device according to an embodiment of this invention.1. 2. 3. 4. 5 are a headlamp, a headlamp cleaner, and a headlamp cleaner, respectively, as in Figure 1.
The bumper, injection nozzle and cleaning fluid are shown.

In the headlamp cleaner 2, the holder 7 is fixed to the bumper 3 via the base 8.
Fits and holds a mouthpiece 9 screwed onto the bumper 3 with a nut 10, and also fits and holds an injection nozzle 4 at the top of the mouthpiece 9, which is connected to a pump (not shown) through a hose (not shown). The guided cleaning liquid 5 can be injected from the injection nozzle 4 through the mouthpiece 9.

A cap 11, which is a cleaning liquid shaping body, is fitted and attached to the tip of the injection nozzle 4, and this cap 11 has a groove 1 that divides the circular head 11a into two in the diameter direction.
2 is formed.

Therefore, when this cap 11 is attached to the injection nozzle 4, the injection port 4a of the injection nozzle 4 is located at the center of the bottom of the groove 12, and the width of this groove 12 is the same as that of the injection port 4a of the nozzle 4. The groove 12 is formed to be equal to the diameter d (for example, 1.3 mm) of the circular head 11 a, and its depth D is larger than the thickness t (for example, 2 mm) of the head 11 a of the cap 11. The center part of the groove 12 is penetrated downward, so that the bottom surface 12 of the groove 12
a completely opens the injection port 4a.

The injection nozzle 4 equipped with the cap 11 is configured to allow cleaning liquid 5 to come out from the injection port 4a by the inner walls on both sides of the groove 12.
On the other hand, by restricting the spread of the groove 12 in the width direction and allowing it to spread only in the longitudinal direction, as shown in FIG. It can be sprayed in a perfect elliptical cone shape.

In this embodiment, a screw 13 is provided in order to swirl the cleaning liquid 5 in the injection nozzle 4, so that the injected cleaning liquid spreads in the longitudinal direction of the groove 12, reducing the cleaning liquid 5a that deviates to the side. This makes it possible to obtain an injection that is close to the shape of an elliptical cone.

Further, by changing the thickness t of the head 11a of the cap 11 and the width d of the groove 12, an elliptical conical shape that effectively cleans the headlamp 1 can be obtained.

According to the cleaning liquid injection device of this embodiment having the above-described configuration and operation, by regulating the injection direction of the cleaning liquid with the cap having grooves in the diametrical direction, it is possible to obtain injection in a nearly perfect elliptical cone shape. This allows for efficient cleaning without loss of cleaning fluid.

Moreover, unlike the conventional cap shown in FIG. 2, the cap attached to the injection nozzle as a cleaning liquid shaping body has a very simple structure, so it is very easy to manufacture and inexpensive.

In addition, since the cleaning liquid shaping body is configured with a cap 11 that is separate from the injection nozzle 4, the cap can be attached only to the car washer nozzle where the injection pattern needs to be shaped. It is possible to use the same type of nozzle, that is, to attach and detach the cap as necessary, thereby reducing the number of parts and manufacturing costs.

In the above embodiment, the outer shape of the cleaning liquid shaping body is formed into a circular shape, but this does not necessarily have to be a circular shape.

As described above, according to this invention, there is provided an injection nozzle having a circular injection port for ejecting cleaning liquid, and a cleaning liquid provided with a groove that fits into the tip of the injection nozzle and divides the circular head into two in the diameter direction. The groove is configured with a bottom surface through which the injection port is completely opened, and a side wall that shapes the cleaning liquid from the injection port into an elliptical cone shape, thereby improving efficiency by shaping the cleaning liquid into an elliptical cone shape. Not only can cleaning be performed well, but also the device can be easily and inexpensively obtained.

[Brief explanation of the drawing]

Figure 1a is a schematic diagram of a conventional headlamp cleaner.
The figure shows a configuration diagram showing a modified example, and Figure 2 a, l)
3 is a plan view and a partially cutaway side view of a conventional injection nozzle for performing elliptic cone-shaped injection, FIG. 3 is a perspective view of a headlamp cleaner equipped with a cleaning liquid injection device according to an embodiment of the present invention, and FIG. The figure is a sectional view of the headlamp cleaner, FIG. 5 is a partially cutaway side view of the above embodiment, FIG. 6 is an exploded perspective view thereof, and FIGS. 7 a and b are a plan view and cross section of the cap of the above embodiment. Figures 8a and 8l) are a plan view and a sectional view of the injection nozzle of the above embodiment. 4...Injection nozzle, 4a...Injection port,
5...Cleaning liquid, 11...Cap as a cleaning liquid shaping body, 12...Groove.

Claims (1)

[Scope of utility model registration request] It includes an injection nozzle having a circular injection port that sprays cleaning liquid onto a surface to be cleaned, and a cleaning liquid shaping body that is fitted to the tip of the injection nozzle and is provided with a groove that divides the circular head into two in the diameter direction. . A cleaning liquid injection device, wherein the groove comprises a bottom surface in which a circular injection port of the injection nozzle is completely opened, and a side wall that shapes the cleaning liquid from the injection port into an elliptical cone shape.