JPH07329734A - Washer nozzle for vehicle - Google Patents

Abstract

PURPOSE:To heat efficiently the whole of a nozzle portion by forming a heater fitting groove at a washer nozzle in a state in which a washing liquid flow passage is surrounded, furnishing at the fitting groove a filmlike heater internally and cylindrically. CONSTITUTION:In the case of what prevents the freezing of a washer nozzle 1 by the heating of a heater 9, the heater 9 is cylindrically assembled in the state of being furnished internally to a heater fitting groove 3b to be formed at the body portion 3 of the washer nozzle 1. Accordingly, at the body portion 3, the heating of the whole nozzle can be realized, and there is no maldistribution of heated portions, and heating at the approximate whole area becomes possible. In addition, as the heater 9 is internally furnished so as to be covered with the washer nozzle 1 without being exposed to the outside, a heating portion is not exposed to the outside as if the whole nozzle were made to be a ceramic heater. In addition, heating that is approximately uniform without relation to a distance from a lead wire can be realized, so heating efficiency is excellent, and freezing can be avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle washer nozzle for ejecting a cleaning liquid (washer liquid) onto a window surface of a passenger car, a bus, a truck or the like.

[0002]

BACKGROUND OF THE INVENTION Generally,
This type of washer nozzle is often mounted so that a part of it is exposed from the body surface of the vehicle.
In cold regions, ice may be frozen on the jetting portion of the washer nozzle, and this may hinder the jetting of the washer liquid. Therefore, it may be necessary to consider the freezing. As one of such considerations, it has been proposed that a washer nozzle be provided with a heating element (heater), and conventionally, for example, Japanese Utility Model Publication No. 63-61368 and Japanese Utility Model Publication No.
There is known one such as that disclosed in Japanese Laid-Open Patent Publication No. 2-181459.

However, the former one is one in which a heat pipe with fins is internally provided on one side of a cover body for covering the washer nozzle, or the washer nozzle is covered with the heat pipe, so that the size must be large. In addition to the above, if the heat pipe is provided in a state of being unevenly distributed on one side of the cover body, the heating efficiency of the portion where the ejection port opposite to the heat pipe is formed is inevitably lowered, and the ejection port portion is likely to freeze. There is a problem, and if the washer nozzle is covered with a heat pipe, there is a problem that its processing is difficult. On the other hand, the latter has no problem such as uneven heating or large size because the entire washer nozzle is a ceramic heater.
This product has to be special because the washer nozzle is made of ceramics, which is difficult to manufacture, and the head exposed from the body surface is far from the power supply lead wire, so the heating efficiency at that part is poor. In addition, it is difficult to exert a sufficient heating function because the head is directly exposed to the outside air and cooled, and it is necessary to measure the insulation between the ceramic heater and the vehicle body and washer fluid. However, there is a problem that it cannot be adopted immediately if it is left as it is.

[0004]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing a washer nozzle for a vehicle that can eliminate these drawbacks in view of the above-mentioned circumstances, and a window washer A washer nozzle for ejecting cleaning liquid, characterized in that a heater mounting groove is formed in the washer nozzle so as to surround the cleaning liquid flow path, and a film-shaped heater is cylindrically provided inside the mounting groove. It is a thing.

According to the present invention, the entire nozzle portion can be efficiently heated by this structure.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a vehicle washer nozzle, and the washer nozzle 1 is made of a resin material and has a body portion 3 attached to a through attachment hole 2a formed in a body 2 and a lower end portion of the body portion 3. For ejecting the washer liquid, which is integrally formed by the formed tube connection portion 4 and the head portion 5 formed on the upper end portion of the body portion 3 and is forcibly fed by the driving of a washer pump (not shown), The ejection from the base 6 is the same as conventional ones. In the figure, 7 is a check valve ball and 8 is a check valve ammunition.

In the body portion 3 of the washer nozzle 1, a step surface portion with the tube connecting portion 4 is opened, and a cylindrical heater mounting groove 3b is formed in a state of surrounding the liquid flow path 3a formed in the body portion 3. Although formed, the heater mounting groove 3b has a deep groove shape that extends to both the left and right sides and the rear side portion of the head portion 5. On the other hand, 9 is a heater, and the heater 9 meanders a resistor 11 such as a nichrome wire on a film-shaped substrate 10 formed of a flexible insulating material having excellent heat resistance so as to spread over substantially the entire film surface. The heater 9 is integrally formed by being laid in a circular shape, and is arranged in the heater mounting groove 3b in a tubular state and fixed by an adhesive (filler) 12.

Incidentally, the heater 9 is notched at the rear side portion of the head 5, that is, the portion corresponding to the ejection mouthpiece 6, so that the heater 9 is left and right on the head 5 excluding the rear side portion. It is set so as to enter both sides and the front side, and the trunk portion 3 is formed in a tubular shape so as to enter substantially the entire body. Further, the guide wire 13 is provided on the outer peripheral edge of the heater 9 so as to have appropriate rigidity, so that the assembling work of the heater 9 can be facilitated. Reference numeral 14 in the drawing is a lead wire connected to the resistor 11, and the resistor 11 can be opened by turning on a switch (not shown).
The current is set to flow.

In the embodiment of the present invention constructed as described above, the heater 9 generates heat when a switch (not shown) is turned on to cause a current to flow through the resistor 11 when the temperature is extremely cold, such as in the winter, whereby the washer nozzle 1 is heated. Freezing is prevented.

As described above, in the embodiment of the present invention, the heating of the heater 9 prevents the washer nozzle 1 from freezing. In this case, the heater 9 is
Since it is assembled in a tubular shape in the heater mounting groove 3b formed in the body portion 3 of the washer nozzle 1, it is possible to heat the entire nozzle in the body portion 3, resulting in uneven heating portions. Without it, it is possible to heat almost the entire area. In addition, since the heater 9 has a structure in which the washer nozzle 1 is covered with the washer 1 without being exposed to the outside, the heating portion is exposed to the outside like a ceramic heater for the entire nozzle. In addition, since the heating can be performed substantially uniformly regardless of the distance from the lead wire, the heating efficiency is excellent, freezing can be avoided, and there is no need to consider the insulation between the nozzle and the vehicle body and washer fluid.

Further, in this case, when the washer nozzle 1 is assembled to a vehicle for an area where there is no fear of freezing, the outer shape of the washer nozzle 1 of the present invention is not different from the conventional shape, and therefore the heater 9 is used. By assembling the same washer nozzle 1 in a vehicle in a state where it is not incorporated, it is possible to use the same washer nozzle 1 for both cold regions and regions where it is not so that the parts management can be improved.

Further, the heater 9 is a mouthpiece 6 for ejecting the head 5.
Since it is configured to reach the left and right sides and the front side portion excluding the rear side portion where the
It is possible to heat up to even higher temperatures, and to exhibit a better antifreeze function.

In addition, in this case, when the heater 9 is attached to the washer nozzle 1, the heater 9 can be inserted and incorporated from the opening formed in the step portion between the body portion 3 and the tube connecting portion 4, so that the heater 9 can be installed. There is an advantage that a tubular product can be assembled in advance and the assembling work becomes easy.

Of course, the present invention is not limited to the above-mentioned embodiment, and the heater may be a film-shaped heater, that is, a planar heating element. As a material to be used in the embodiment, a material which is formed in a tubular shape in advance can be incorporated. Further, as the opening for incorporating the heater, not only the step surface portion between the tube connecting portion and the body portion as in the above embodiment,
It may be formed on the body 3 as in the second embodiment shown in FIGS. In the case of the second embodiment, when the heater is incorporated, the tube becomes an obstacle, and when the heater cannot be inserted from the lower side of the washer nozzle due to the layout of the vehicle, etc. The heater can be installed from the direction.

[0015]

In summary, since the present invention is constructed as described above, it is intended to prevent the washer nozzle from freezing by causing the heater to generate heat during severe cold conditions such as the winter season. Is assembled into a cylindrical shape in a state where it is installed in a heater mounting groove that is formed so as to surround the cleaning liquid flow path, so that the entire nozzle can be heated and the heating portion is not unevenly distributed. It is possible to heat the entire area. In addition, the heater has a structure in which the washer nozzle is covered with the washer nozzle without being exposed to the outside, so that the heating portion may be exposed to the outside like a ceramic heater for the entire nozzle. In addition, the heating can be performed substantially evenly regardless of the distance from the lead wire, the heating efficiency is excellent, freezing can be avoided, and the insulation between the nozzle and the vehicle body and washer fluid is not required. Further, if the heater mounting groove is formed in a groove deep shape extending from the body portion of the washer nozzle to the head portion, even the head portion can be heated, and a more excellent antifreezing function can be exhibited. further,
If the opening for inserting the heater is formed in the step surface between the body and the tube connection part, when mounting the heater to the washer nozzle, the heater can be assembled in a tubular shape in advance, and the assembly work is easy. Has the advantage that

[Brief description of drawings]

FIG. 1 is a perspective view of a washer nozzle.

FIG. 2 is a vertical cross-sectional view of a washers nozzle.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a front view of a heater.

FIG. 5 is a perspective view of a washer nozzle showing a second embodiment.

6 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Washer nozzle 3 Body part 3a Liquid flow path 3b Heater mounting groove 4 Tube connection part 5 Head part 6 Jet nozzle 9 Heater

Claims (4)

[Claims] 1. A washer nozzle for ejecting a cleaning liquid onto a window surface, wherein a heater mounting groove is formed in the washer nozzle so as to surround a cleaning liquid flow path, and a film-shaped heater is formed into a cylindrical shape in the mounting groove. A washer nozzle for a vehicle, which is characterized by being interiorly installed. 2. The washer nozzle according to claim 1, wherein the washer nozzle includes a tube connecting portion, a head portion provided with a jet gold,
It is assumed that the heater mounting groove is formed by the tube connecting portion and the body portion between the head portion, and the heater mounting groove is formed in a tubular shape at least surrounding the cleaning liquid flow path in the body portion. Washer nozzle for. 3. The heater mounting groove according to claim 2,
A washer nozzle for a vehicle, characterized in that it is formed in a deep groove shape from the body to the head. 4. The vehicle washer nozzle according to claim 2, wherein the heater mounting groove is formed with an opening for inserting a heater in a step surface portion between the body portion and the tube connecting portion.