JP2006001529A - Washer nozzle for vehicle and washer device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washer nozzle for a vehicle, in which liquid particles of injected washing liquid hardly receives influence of traveling wind, capable of approximately landing water at a target water-landing point at high speed traveling and obtaining desired washing performance. <P>SOLUTION: A nozzle tip 14 of the washer nozzle is made to a constitution of "fluidics type nozzle" and a diffusion angle β of a diffusion flow is set to a larger angle than a predetermined angle W of a pair of injection side wall. Namely, the diffusion flow injected from an injection port at the diffusion angle β determined by a ratio E of a cross section area is injected by a pair of injection side walls (angle W) provided on the downstream of the diffusion injection port while the spraying (diffusion limit) is restricted. Thereby, in the injected diffusion flow (injection flow) while the spraying (diffusion limit) is restricted, staying of the washing liquid is generated at both ends of injection width and the liquid particles are crowded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle washer nozzle and a vehicle washer device for injecting a cleaning liquid to clean a windshield glass of a vehicle.

  A washer device for cleaning a windshield glass of a vehicle is provided with a washer nozzle. Among these washer nozzles, a so-called “fluidic nozzle” is known as a diffusion spray nozzle that sprays cleaning liquid in the vehicle width direction and sprays it onto the windshield glass surface (see, for example, Patent Document 1).

  The fluidic nozzle as shown in Patent Document 1 has a nozzle tip (diffusion fluid element) to which a feedback control flow is applied inside the nozzle. The nozzle chip is formed with a fluid circuit including a self-oscillation chamber in which the cleaning liquid self-oscillates and a control flow path, and the cleaning liquid can be diffused and sprayed in the vehicle width direction.

  Further, in this conventional fluidic type nozzle (diffusion jet nozzle) as shown in Patent Document 1, the inlet portion of the self-excited oscillation chamber (referred to as “power nozzle” in Patent Document 1) is used. It is known that the ratio between the cross-sectional area and the cross-sectional area of the exit portion of the self-excited oscillation chamber (referred to as “throat” in Patent Document 1) determines the diffusion angle of the fan-shaped diffusion jet. Yes.

By the way, when applying such a fluidic type nozzle (diffusion spray nozzle) to a cleaning liquid supply in which a cleaning liquid is sprayed onto a wind glass surface of an automobile and wiped by a wiper device, for example, every corner of the wiping range (glass surface) If the diffusion angle is increased in order to supply the cleaning liquid up to the range, the cleaning liquid can be supplied in a wider angle range, but on the other hand, the velocity vector component in the diffusion direction of the jet flow becomes large and the jet flow in the injection direction (vehicle traveling direction) The velocity vector component becomes small. That is, if the diffusion angle of the jet flow is increased, the propelling force (component force of the injection force) in the diffusion direction of the injected cleaning liquid increases, so the propulsion force (component force of the injection force) toward the glass surface is It gets smaller. Therefore, when the vehicle is traveling at high speed, the sprayed liquid droplets of the cleaning liquid are easily affected by the air flow, landing below the target landing point, and obtaining a desired cleaning performance (appropriate cleaning liquid supply). There was a problem that it was not possible.
JP-T 55-500853

   In consideration of the above-mentioned facts, the present invention eliminates the drawbacks of conventional fluidic nozzles (diffusion spray nozzles), and the liquid particles of the sprayed cleaning liquid are not easily affected by the driving wind. It is an object to obtain a vehicle washer nozzle that can land on a water point and obtain desired cleaning performance.

  A vehicle washer nozzle according to a first aspect of the present invention includes an oscillation chamber that self-oscillates the pumped cleaning liquid, and a liquid inlet that is provided at the oscillation chamber inlet portion and guides the pumped cleaning liquid into the oscillation chamber. A diffusing injection port for diffusing and injecting the cleaning liquid self-excited in the oscillation chamber provided on the same axis as the liquid inlet at the oscillation chamber outlet portion, and the cleaning liquid in the vehicle width direction A vehicle washer nozzle that injects from the diffusion injection port toward the glass surface as a diffused flow diffused in the vehicle, and continuously faces the injection direction from the diffusion injection port and faces each other in a predetermined direction in the vehicle width direction. A diffusion angle of the diffusion flow from the diffusion injection port, which is provided with a pair of injection side walls extending in a fan shape at an angle W, and is determined by a ratio E of a cross-sectional area of the liquid inlet and a cross-sectional area of the diffusion injection port β is the pair of injections Is set to an angle larger than the predetermined angle W of the wall is characterized by.

  A vehicle washer nozzle according to a second aspect of the present invention is the vehicle washer nozzle according to the first aspect of the present invention, comprising: a feeding path that communicates with the liquid inlet and feeds the pumped cleaning liquid to the liquid inlet; An inlet opening to the oscillation chamber is formed on each of the left and right sides upstream of the diffusion jet port of the oscillation chamber, and an opening to the oscillation chamber is formed on each of the left and right sides downstream of the liquid inlet of the oscillation chamber. And a pair of left and right feedback flow paths for feeding back a part of the cleaning liquid fed to the oscillation chamber from the respective inlets to the respective outlets. It is characterized by.

  The vehicle washer nozzle according to a third aspect of the present invention is the vehicle washer nozzle according to the first or second aspect, wherein the predetermined angle W of the pair of injection side walls is determined by the ratio E. It is characterized by an angle of 75% to 85% of the angle β.

  A vehicle washer nozzle according to a fourth aspect of the present invention is the vehicle washer nozzle according to any one of the first to third aspects, wherein the predetermined angle W of the pair of injection side walls is 42 degrees to A range of 65 degrees is set, and the ratio E is set to a range of (0.0291W−0.205) ≦ E ≦ (0.0329W−0.1397).

  A vehicle washer device according to a fifth aspect of the present invention is characterized in that the vehicle washer nozzle according to any one of the first to fourth aspects is applied.

  In the vehicular washer nozzle according to claim 1 and the vehicular washer device according to claim 5, the pressure-fed cleaning liquid is guided from the liquid inlet to the oscillation chamber and is self-oscillated in the oscillation chamber. The cleaned cleaning liquid is diffused and jetted from the diffusion jet port.

  Here, in the vehicle washer nozzle and the vehicle washer device, the diffusion angle β (width direction injection angle) of the diffusion flow diffused and injected from the diffusion injection port is the cross-sectional area of the liquid inlet and the cross-sectional area of the diffusion injection port. The diffusion angle β of the diffusion flow is set to be larger than the predetermined angle W between the pair of injection side walls. That is, the diffusion flow injected from the diffusion injection port at the diffusion angle β determined by the cross-sectional area ratio E is spread (diffusion limit) by a pair of injection side walls (angle W) provided downstream of the diffusion injection port. The jet is regulated.

  As a result, in the diffusion flow (injection flow) jetted with its spread (diffusion limit) regulated, the cleaning liquid stays at both ends of the jet width, and the liquid particles are densely packed. Therefore, at both ends of the ejection width, the liquid droplets of the cleaning liquid are concentrated, so that the individual liquid particle size is increased and the kinetic energy per one liquid particle is increased. It becomes difficult to be affected by. As a result, the cleaning liquid can be allowed to substantially land on the target landing point even during high-speed traveling, and desired cleaning performance can be obtained.

  In the vehicular washer nozzle according to the second aspect and the vehicular washer device according to the fifth aspect, the cleaning liquid is supplied from the supply path to the oscillation chamber through the liquid inlet. When the cleaning liquid is supplied to the oscillation chamber, a part of the cleaning liquid is fed back from each inlet of each of the left and right feedback flow paths to each outlet (feedback control flow). As a result, the cleaning liquid (mainstream) fed to the oscillation chamber is alternately attached to the left and right side walls of the oscillation chamber, and a vortex is generated, so that the cleaning liquid is self-oscillated, and the self-oscillated cleaning liquid is discharged from the diffusion injection port. Diffusion injection.

  In this way, the supplied cleaning liquid can be suitably self-oscillated in the oscillation chamber, and the structure becomes simple.

  In the vehicle washer nozzle according to claim 3 and the vehicle washer device according to claim 5, the predetermined angle W by the pair of injection side walls is set to an angle of 75% to 85% of the diffusion angle β of the diffusion flow. Yes. In other words, the regulation rate of the spread (diffusion limit) of the diffusion flow (jet flow) to be injected is 25% to 15%.

  Here, as described above, in order to make the liquid droplets of the cleaning liquid less susceptible to the influence of the traveling wind, it is better that the kinetic energy per one liquid particle is large, and therefore the individual liquid particle size is large and the flow velocity is high. Is preferred.

  In this respect, in the vehicle washer nozzle according to claim 3 and the vehicle washer device according to claim 5, the stagnation of the cleaning liquid is caused by restricting the spread (diffusion limit) of the injected diffusion flow (injection flow). The diameter of the liquid particle can be maximized (with almost no decrease) while minimizing the decrease in the flow speed of the liquid particle (both the liquid particle diameter and the flow speed of the liquid particle can be satisfied). The range of the angle W is specified.

  In this way, since the particle size of the liquid particle can be maximized while spraying at the same flow rate as that in the case where the retention of the cleaning liquid does not occur at both ends of the spray width of the sprayed diffusion flow (jet flow), It is possible to inject while keeping the kinetic energy large, making it less susceptible to the influence of the traveling wind.

  Here, normally, the diffusion direction (width direction) injection angle of this type of diffusion injection nozzle suitable for vehicles is in the range of 42 degrees to 65 degrees. That is, if the spray angle is large, the cleaning liquid may be sprawled. On the other hand, if the spray angle is small, a wide and suitable landing area cannot be obtained. Moreover, the predetermined angle W by the pair of injection side walls of the washer nozzle in the present invention is preferably set to an angle of 75% to 85% of the diffusion angle β (width direction injection angle) of the diffusion flow, and the diffusion angle. β is determined by the ratio E.

  In this regard, in the vehicle washer nozzle according to claim 4 and the vehicle washer device according to claim 5, the predetermined angle W by the pair of injection side walls is set in a range of 42 degrees to 65 degrees, The ratio E is specified as a range of (0.0291W−0.205) ≦ E ≦ (0.0329W−0.1397). That is, E ≦ (0.0329W−0.1397) is defined as the upper limit value when the angle W is 75% of the diffusion angle β, and the lower limit value when the angle W is 85% of the diffusion angle β. As a value, E ≧ (0.0291W−0.205) is defined.

  Therefore, similarly to the vehicle washer nozzle according to the third aspect, the flow rate of the liquid particles is controlled by restricting the spread (diffusion limit) of the diffusion flow (injection flow) to be injected (due to the retention of the cleaning liquid). It is possible to maximize the diameter of the liquid droplets while minimizing the decrease (with almost no decrease) (both the liquid particle diameter and the flow velocity of the liquid particles can be satisfied). In other words, the liquid particle kinetic energy can be maximized while spraying at the same flow rate as when no stagnation of the cleaning liquid occurs at both ends of the spray width of the sprayed diffusion flow (jet flow). It is possible to inject fuel while keeping the air pressure large, and to minimize the influence of the traveling wind.

  FIG. 4 is a perspective view showing the overall configuration of the washer nozzle 10 according to the embodiment of the present invention.

  The washer nozzle 10 includes a nozzle body 12 and a nozzle tip 14.

  The nozzle body 12 is made of resin, and a pair of locking claws 13 extend toward the head 12B on the side wall of the base 12A of the nozzle body 12, and the head 12B is attached to the body panel of the vehicle (not shown). Is locked in the exposed state. A cylindrical hose connecting portion 16 is formed at the lower end of the nozzle body 12, and a hose (not shown) connected to the cleaning liquid storage tank is connected.

  In addition, the nozzle body 12 is formed with a chip accommodating portion 18 that opens to the front side, and a feeding path 20 is formed continuously to the tip accommodating portion 18. One end portion of the feeding path 20 reaches the hose connecting portion 16.

  A nozzle chip 14 formed by resin molding is integrally and liquid-tightly fitted in the chip housing portion 18.

  Here, FIG. 1 shows a configuration of the nozzle chip 14 in a rear view, and FIG. 2 shows a cross-sectional view of the nozzle chip 14 taken along line 2-2 of FIG. Further, FIG. 3 is a perspective view showing the configuration of the nozzle tip 14.

  The nozzle tip 14 is formed in a box shape as a whole, and is formed with a flow path 22 that communicates with the feed path 20 (constituting a part of the feed path 20) in a state of being fitted into the chip accommodating portion 18. ing. Furthermore, an oscillation chamber 24 and a pair of feedback channels 26 and 28 are formed on the lower surface side of the nozzle chip 14.

  As shown in detail in FIG. 1, the oscillation chamber 24 is formed continuously with the flow path 22, and the cleaning liquid is guided into the oscillation chamber 24 by communicating with the feeding path 20 (flow path 22) at the inlet portion thereof. A liquid inlet 32 is provided. The cleaning liquid fed from the flow path 22 is fed into the oscillation chamber 24 through the liquid inlet 32.

  In addition, a diffusion injection port 30 is provided at the outlet of the oscillation chamber 24 on the same axis as the liquid inlet 32. Further, a pair of injection side walls 34 are provided on the downstream side (right side in FIG. 1) of the diffusion injection port 30. Each injection side wall 34 is formed continuously from the diffusion injection port 30 in the injection direction so as to face each other, and is formed so as to spread in a fan shape at a predetermined angle W in the vehicle width direction.

Here, in the present embodiment, as shown in FIGS.
a: width of liquid inlet 32 b: height of liquid inlet 32 c: width of diffusion jet 30 d: height of diffusion jet 30 E: sectional area of liquid inlet 32 and breakage of diffusion jet 30 Ratio with area, ie (c × d) / (a × b)
β: The original diffusion angle of the diffusion flow from the diffusion injection port 30 determined by the ratio E. W: The spread angle of the pair of injection side walls 34.
1) As shown in FIG. 5, the diffusion angle β is set to be larger than the spread angle W (that is, “β> W”).

  2) The spread angle W is set in the range of 75% to 85% of the diffusion angle β (that is, “0.75β <W <0.85β”).

  3) The spread angle W is set in a range of 42 degrees to 65 degrees (that is, “42 degrees <W <65 degrees”).

  4) The ratio E is set in the range of (0.0291W−0.205) ≦ E ≦ (0.0329W−0.1397).

  On the other hand, the pair of feedback flow paths 26 and 28 are provided to branch from the oscillation chamber 24 to the left and right, respectively. In the feedback flow paths 26 and 28, inlets 26 A and 28 A that open to the oscillation chamber 24 are formed on the left and right sides of the oscillation chamber 24 upstream of the diffusion injection port 30, respectively. Outlets 26B and 28B that open to the oscillation chamber 24 and communicate with the inlets 26A and 28A, respectively, are formed on the left and right sides downstream of the port 32. As a result, the feedback flow paths 26 and 28 branch and guide part of the cleaning liquid supplied from the flow path 22 to the oscillation chamber 24 from the inlets 26A and 28A to the outlets 26B and 28B, respectively, and again the oscillation chamber. It is configured to return to 24. Thereby, the cleaning liquid guided to the feedback flow paths 26 and 28 becomes a so-called “control flow”, and the cleaning liquid flowing through the oscillation chamber 24 can be self-excited.

  As described above, the washer nozzle 10 has a so-called “fluidic nozzle” in which the nozzle tip 14 is configured, and the cleaning liquid self-oscillated in the oscillation chamber 24 is used as a fan-like diffusion flow from the diffusion injection port 30 to the vehicle. It can be diffused and sprayed in a relatively wide range in the width direction, and the cleaning area can be increased.

  Next, the operation of the present embodiment will be described.

  In the washer nozzle 10 having the above-described configuration, the cleaning liquid pressure-fed by a washer pump from a tank (not shown) and fed from the hose connecting portion 16 of the nozzle body 12 is guided to the feeding path 20 and the flow path 22, and is further passed through the liquid inlet 32. To the oscillation chamber 24 of the nozzle tip 14. When the cleaning liquid is supplied to the oscillation chamber 24, a part of the cleaning liquid supplied into the oscillation chamber 24 is branched from the inlets 26A and 28A of the feedback flow paths 26 and 28 to the outlets 26B and 28B, respectively. Guided and returned to the oscillation chamber 24 again. As a result, the cleaning liquid guided to the feedback flow paths 26 and 28 becomes a so-called control flow, and the cleaning liquid flowing through the oscillation chamber 24 alternately adheres to the left and right side walls of the oscillation chamber 24 to generate vortices, and the cleaning liquid self-oscillates. The self-excited oscillating cleaning liquid is ejected from the diffusion ejection port 30 as a fan-shaped diffusion flow. Therefore, in the washer nozzle 10, the cleaning liquid can be sprayed over a wide area by the fan-shaped diffusion flow from the diffusion spray port 30, and can be landed.

  Here, the diffusion angle β (width direction injection angle) of the diffusion flow diffused and injected from the diffusion injection port 30 in the vehicle width direction is a ratio E of the cross-sectional area of the liquid inlet 32 and the cross-sectional area of the diffusion injection port 30. Although determined (see Patent Document 1 described above), in the washer nozzle 10 according to the present embodiment, the diffusion angle β of the diffusion flow is larger than a predetermined angle W of the pair of injection side walls 34 as shown in FIG. A large angle is set. That is, the diffusion flow injected from the diffusion injection port 30 at the diffusion angle β determined by the ratio E of the cross-sectional area is spread by the pair of injection side walls 34 (angle W) provided downstream of the diffusion injection port 30 ( (Diffusion limit) is controlled and injected.

  As a result, in the diffusion flow (injection flow) jetted with its spread (diffusion limit) regulated, the cleaning liquid stays at both ends of the jet width, and the liquid particles are densely packed. Therefore, at both ends of the ejection width, the liquid droplets of the cleaning liquid are concentrated, so that the individual liquid particle size is increased and the kinetic energy per one liquid particle is increased. It becomes difficult to be affected by. As a result, the cleaning liquid can be allowed to substantially land on the target landing point even during high-speed traveling, and desired cleaning performance can be obtained.

  Also, as described above, in order to make the liquid droplets of the cleaning liquid less susceptible to the influence of the traveling wind, it is better that the kinetic energy per liquid particle is large. Therefore, the liquid particle diameter is large and the flow velocity is high. Faster is preferable. Further, normally, the diffusion direction (width direction) injection angle of this type of diffusion injection nozzle suitable for vehicles is in the range of 42 degrees to 65 degrees. That is, if the spray angle is large, the cleaning liquid may be sprawled. On the other hand, if the spray angle is small, a wide and suitable landing area cannot be obtained. Moreover, the predetermined angle W by the pair of injection side walls 34 of the washer nozzle 10 in the present invention is 75% to the diffusion angle β (width direction injection angle) of the diffusion flow determined by the cross-sectional area ratio E as described above. An angle of 85% is preferable.

  That is, FIG. 7 shows the liquid particle size of the diffusion flow with respect to the restriction rate of the spread (diffusion limit) of the injected diffusion flow (injection flow) when the spread angle W by the pair of injection side walls 34 is set to 50 degrees. The experimental results of measuring are shown. As apparent from FIG. 7, the range in which the diameter of the liquid particles is hardly reduced is the range where the regulation rate is 15% or more. On the other hand, FIG. 8 similarly shows the flow velocity of the diffusion flow with respect to the restriction rate of the spread (diffusion limit) of the injected diffusion flow (injection flow) when the spread angle W by the pair of injection side walls 34 is set to 50 degrees. The experimental results of measuring are shown. As apparent from FIG. 8, the range in which the flow rate of the liquid particles is hardly reduced by restricting the spread (diffusion limit) of the sprayed diffusion flow (jet flow) (due to the retention of the cleaning liquid) is not limited. The regulation rate is in the range of 25% or less. In this way, the regulation rate that can make the flow rate of the liquid particles equal to that that is not subjected to the spread regulation while performing the regulation of the spread (retention of the cleaning liquid) to increase the liquid particle size of each liquid, It was found that the range was 25% to 15% of the original diffusion angle β (determined by the cross-sectional area ratio E).

  In this regard, in the washer nozzle 10 according to the present embodiment, the spread angle W by the pair of injection side walls 34 is set to an angle of 75% to 85% of the diffusion angle β of the diffusion flow. In other words, the regulation rate of the spread (diffusion limit) of the diffusion flow (jet flow) to be injected is 25% to 15%. Moreover, as shown in FIG. 6, the spread angle W is set in a range of 42 degrees to 65 degrees, and the ratio E is (0.0291W−0.205) ≦ E ≦ (0.0329W−0). .1397).

  That is, as the upper limit value when the angle W is 75% of the diffusion angle β, based on the line X by the point A (42 degrees, 1.2421) and the point B (65 degrees, 1.9998) in FIG. E ≦ (0.0329W−0.1397) is defined. Further, as the lower limit when the angle W is 85% of the diffusion angle β, based on the line Y by the point C (42 degrees, 1.0172) and the point D (65 degrees, 1.6865) in FIG. E ≧ (0.0291W−0.205) is defined.

  As a result, the decrease in the flow rate of the liquid droplets by restricting the spread (diffusion limit) of the sprayed diffusion flow (jet flow) (due to the retention of the cleaning liquid) is minimized (almost not reduced) ) The range of the angle W that can enlarge the diameter of the liquid droplet (satisfying both the liquid particle size and the flow velocity of the liquid particle) is specified.

  Therefore, since the particle size of the liquid particle can be increased while jetting at a flow rate equivalent to the case where the cleaning liquid does not stay at both ends of the spray width of the sprayed diffusion flow (jet flow), the kinetic energy of the liquid particle is reduced. It is possible to inject fuel while keeping it large, and to minimize the influence of traveling wind.

It is a reverse view which shows the structure of the nozzle chip | tip of the washer nozzle which concerns on embodiment of this invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1 showing the configuration of the nozzle tip of the washer nozzle according to the embodiment of the present invention. It is a perspective view showing composition of a nozzle tip of a washer nozzle concerning an embodiment of the invention. It is a perspective view which shows the structure of the washer nozzle which concerns on embodiment of this invention. It is a schematic top view which shows the injection diffusion state of the washing | cleaning liquid injected by the washer nozzle which concerns on embodiment of this invention. It is a diagram which shows the setting range of the breadth angle W and cross-sectional area ratio E by the injection side wall of the washer nozzle which concerns on embodiment of this invention. The experimental result which measured the liquid particle size of the diffusion flow with respect to the regulation rate of the diffusion limit of the diffusion flow to be injected when the spread angle W by the injection side wall of the washer nozzle according to the embodiment of the present invention is set to 50 degrees. FIG. The line which shows the experimental result which measured the flow velocity of the diffusion flow with respect to the control rate of the diffusion limit of the diffusion flow to be injected when the spread angle W by the injection side wall of the washer nozzle according to the embodiment of the present invention is set to 50 degrees FIG.

Explanation of symbols

        10 .... Washer nozzle, 12 .... Nozzle body, 14 .... Nozzle tip, 20 .... feed path, 22 .... flow path (feed path), 24 ... oscillation chamber, 26 ... feedback path, 26A ..Inlet, 26B..Outlet, 28..Feedback channel, 28A..Inlet, 28B..Outlet, 30..Diffusion injection port, 32..Liquid inlet, 34..Injection side wall

Claims (5)

An oscillation chamber that self-oscillates the pumped cleaning liquid, a liquid inlet that is provided at the inlet portion of the oscillation chamber and guides the pumped cleaning liquid into the oscillation chamber, and the liquid inlet at the outlet portion of the oscillation chamber is the same as the liquid inlet. A diffusing injection port that diffuses and injects the cleaning liquid that is provided on the axis and self-oscillates in the oscillation chamber. A vehicle washer nozzle that injects toward the surface,
A pair of injection side walls that extend continuously in the injection direction from the diffusion injection port and face each other and spread in a fan shape at a predetermined angle W in the vehicle width direction; and
The diffusion angle β of the diffusion flow from the diffusion injection port determined by the ratio E of the cross-sectional area of the liquid inlet and the cross-sectional area of the diffusion injection port is determined from the predetermined angle W of the pair of injection side walls. Also set a large angle,
This is a vehicle washer nozzle. A feeding path that communicates with the liquid inlet and feeds the pumped cleaning liquid to the liquid inlet;
An inlet opening to the oscillation chamber is formed on each of the left and right sides upstream of the diffusion jet port of the oscillation chamber, and an opening to the oscillation chamber is formed on each of the left and right sides downstream of the liquid inlet of the oscillation chamber. And a pair of left and right feedback flow paths that respectively form an outlet that communicates with the inlet and feeds back a part of the cleaning liquid fed to the oscillation chamber from the inlet to the outlet.
The vehicle washer nozzle according to claim 1, further comprising: The predetermined angle W of the pair of injection side walls forms an angle of 75% to 85% of the diffusion angle β determined by the ratio E.
The vehicle washer nozzle according to claim 1 or 2, wherein the vehicle washer nozzle is provided. The predetermined angle W of the pair of injection side walls is in a range of 42 degrees to 65 degrees,
The ratio E was in the range of (0.0291W−0.205) ≦ E ≦ (0.0329W−0.1397).
The vehicle washer nozzle according to any one of claims 1 to 3.   A vehicular washer device, wherein the vehicular washer nozzle according to any one of claims 1 to 4 is applied.

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