JP4038144B2 - Vehicle washer nozzle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle washer nozzle that injects a cleaning liquid in order to clean a windshield glass or the like of a vehicle.
[0002]
[Prior art]
A washer device for cleaning a windshield glass of a vehicle is provided with a washer nozzle. Among these washer nozzles, "flat spray type nozzles" and "fluidic type nozzles" are known as diffusion spray nozzles that spray cleaning liquid in the vehicle width direction and spray it onto the windshield glass surface (for example, Patent Documents). 1).
[0003]
The flat spray type washer nozzle as shown in Patent Document 1 is such that the cleaning liquid that has flowed through the flow passage is collected at the center by the dome at the tip of the flow passage, and then sprayed from the injection port at once. It is sprayed in the form of a mist with a predetermined spread angle (injection angle) in the longitudinal direction. In addition, in this case, a liquid volume distribution in which the liquid volume ratio is small at the center in the longitudinal direction of the spray nozzle and the liquid volume ratio is large on both sides in the longitudinal direction is taken during the injection. become.
[0004]
On the other hand, a fluidic type washer nozzle having a fluid circuit including an oscillation chamber in which the cleaning liquid self-oscillates in the nozzle injects with a uniform liquid concentration (distribution) in the vehicle width direction of the windshield glass surface. In recent years, there has been a liquid volume distribution at the central portion that is smaller than that at the spread angle end so as not to disturb the driving field of view at the time of landing.
[0005]
By the way, although these diffusion spray nozzles have the advantage that they can be supplied without disturbing the driving field of view while spraying and spraying the cleaning liquid in the vehicle width direction as described above, the liquid amount is still insufficient at the center of the spread angle. In order to secure the driving field of view, it is necessary to operate the wiper device (wiper blade) a plurality of times to wipe off the cleaning liquid, and it is difficult to ensure the driving field of view quickly in a short time.
[0006]
In particular, when the vehicle is traveling at high speed, the cleaning liquid sprayed from these diffusion spray nozzles has a small particle size, so that it is affected by the traveling wind and reaches the lower part of the windshield glass surface than the target landing area. There was a problem that the liquid amount was insufficient at the center of the spread angle.
[0007]
[Patent Document 1]
Japanese Patent No. 3157747
[0008]
[Problems to be solved by the invention]
In consideration of the above facts, the present invention eliminates the drawbacks of the conventional cleaning liquid injection mode (injection pattern), can supply a sufficient amount of liquid while preventing impediments to driving visibility due to landing, and operates the wiper multiple times. An object of the present invention is to obtain a vehicle washer nozzle that can ensure a driving field of view quickly in a short time.
[0009]
[Means for Solving the Problems]
The vehicle washer nozzle according to the first aspect of the present invention is a vehicle washer nozzle that supplies cleaning liquid to a windshield glass of the vehicle, and a feed passage for guiding and feeding the pressure-fed cleaning liquid is formed and fixed to the vehicle. With a nozzle body, Nozzle chip integrally assembled in the nozzle body, and a diffusion flow formed in the nozzle chip and diffused in the width direction of the vehicle with the cleaning liquid fed from the feed path in communication with the feed path And a diffusion flow which is formed in the nozzle body or the nozzle tip and is partly jetted from the diffusion injection port. A jet injection port for intensive auxiliary injection with a directional jet flow; The basic injection is set such that a central portion of the diffusion angle diffused and injected from the diffusion injection port is set to a liquid volume distribution smaller than both end portions, and the auxiliary injection is performed from the jet injection port to the basic injection. It is set to inject toward the central part.
[0010]
In the vehicle washer nozzle according to claim 1, basic injection is performed with a diffusion flow diffused in the width direction of the vehicle from the diffusion injection port, and the jet flow having a directivity different from the diffusion flow is concentrated from the jet injection port. Auxiliary injection.
[0011]
Here, the basic injection from the diffusion injection port is diffusion injection, and since the central part of the diffusion angle of the diffusion injection is set to a smaller liquid amount distribution than both end parts, the driving field of view due to the landing of the diffusion injection Can be prevented. In addition, in the central part in the width direction of the basic injection with a small liquid volume distribution, the auxiliary injection is concentrated and concentrated by the directional jet flow, and the landing of the jet flow that does not spread is made. The hindrance is extremely small, and the shortage of liquid in basic injection (diffusion injection) can be compensated.
[0012]
Moreover, even when the basic jets land at the lower part of the glass surface than the target landing area due to the influence of the driving wind during high-speed driving, the auxiliary injection is a directional jet flow that is hardly affected by the driving wind. Since it is injected intensively, it is possible to land at a target landing point. As a result, a sufficient amount of liquid can be supplied while preventing the driving view from being disturbed by landing, and the driving view can be secured quickly in a short time without operating the wiper device (wiper blade) multiple times. .
[0013]
A vehicle washer nozzle according to a second aspect of the present invention is the vehicle washer nozzle according to the first aspect, wherein the nozzle tip has an oscillation chamber that self-oscillates the main flow of the cleaning liquid fed from the feeding path. The cleaning liquid is jetted from the diffusion jet port in a diffuse flow oscillated in the width direction of the vehicle.
[0014]
In the vehicular washer nozzle according to the second aspect, the cleaning liquid fed from the feeding path is fed to the oscillation chamber of the nozzle tip. Further, the cleaning liquid is self-excited in the oscillation chamber, and the self-excited cleaning liquid is jetted as a diffusion flow oscillated in the vehicle width direction from the diffusion jet port.
[0015]
Thus, the washer nozzle according to claim 2 is configured as a so-called “fluidic type nozzle” as the configuration of the nozzle portion for basic injection, and the cleaning liquid is suitably diffusely injected from the diffusion injection port as the basic injection. be able to.
[0016]
A vehicle washer nozzle according to a third aspect of the present invention is the vehicle washer nozzle according to the first aspect, wherein the nozzle tip has an elongated opening shape in the width direction of the vehicle, and the nozzle tip The center of the longitudinal direction has a narrowed portion narrowed from the short side direction, and the main flow of the cleaning liquid fed from the feeding path is a basic flow from the diffusion jet port as a diffusion flow with the central portion of the diffusion direction narrowed It is characterized by that.
[0017]
In the vehicular washer nozzle according to the third aspect, the diffusion injection port has an opening shape having a long hole shape in the vehicle width direction, and further has a throttle portion at the center in the longitudinal direction. The main flow of the cleaning liquid fed from the supply path is ejected from the diffusion ejection port as a diffused flow whose central portion in the diffusion direction is narrowed.
[0018]
Thus, the washer nozzle according to claim 3 is configured as a so-called “flat spray nozzle” as a configuration of the nozzle portion for basic injection, and the cleaning liquid is suitably diffusely injected from the diffusion injection port as the basic injection. be able to.
[0019]
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 nozzle tip is integrally assembled in the nozzle body in a liquid-tight state. And having a branch flow path for guiding a part of the cleaning liquid fed from the feed path to the jet injection port.
[0020]
The vehicle washer nozzle according to claim 4, wherein a part of the cleaning liquid fed from the feeding path is guided to the branch flow path, and a directional jet flow is transmitted from the jet injection port communicating with the branch flow path. At the auxiliary injection. For this reason, it is not necessary to separately provide independent feeding paths for auxiliary injection, and to connect / route hoses to each, and the washer nozzle itself can be reduced in size.
A vehicle washer nozzle according to a fifth aspect of the present invention is the vehicle washer nozzle according to any one of the first to fourth aspects, wherein the injection angle of the basic injection from the diffusion injection port is The injection angle of the auxiliary injection from the jet injection port has a predetermined angular relationship.
[0021]
In the vehicle washer nozzle according to the fifth aspect, the injection angle of the basic injection from the diffusion injection port and the injection angle of the auxiliary injection from the jet injection port are set in a predetermined angular relationship. In other words, the cleaning liquid is intensively applied by the auxiliary injection (jet flow) to the portion where the liquid amount distribution is small or the portion where the wiping residue is likely to occur in the injection pattern of the basic injection (diffusion flow) landing on the predetermined area. Can be supplemented with water.
[0022]
For example, if the landing area of the diffused flow injected from the basic injection port falls downward due to the influence of the airflow during high-speed driving (so-called driving wind), the wiping range on the driver's seat is reversed upside down. The upper part in the vicinity of the position becomes more difficult to supply the cleaning liquid. However, since the jet stream injected from the auxiliary injection port is concentrated and landed, it is difficult to be affected by the airflow caused by the traveling wind, and it is possible to reliably land at a desired landing point, so that high speed traveling Sometimes, supplementary supply can be reliably provided to areas where it is difficult to supply cleaning liquid by basic injection. Therefore, as a result, a wide water landing area can be secured, and it is difficult for unwiping to occur, and the wiping performance can be further improved.
[0023]
In addition, for example, by setting the injection angles differently for the driver-side wiper blade and the assistant wiper blade, the non-uniformity in the liquid distribution of the basic injection (diffusion injection) can be more reliably compensated. Is possible.
[0024]
A vehicle washer nozzle according to a sixth aspect of the present invention is the vehicle washer nozzle according to any one of the first to fifth aspects, wherein the jet injection port is independent of the diffusion injection port. It is formed in the nozzle body or the nozzle tip.
[0025]
In the vehicle washer nozzle according to claim 6, since the jet injection port is formed in the nozzle body or nozzle tip independently of the diffusion injection port, the jet angle of the jet flow injected from the jet injection port is diffused. It can be set independently of the diffusion flow injected from the injection port, and is not affected by the diffusion flow from the diffusion injection port (so that the mutual jets do not intersect) or is injected independently. In addition, the jet flow and the diffusion flow can be actively mixed immediately before landing to form a mixed flow, and the degree of freedom in setting the injection pattern is improved. Accordingly, it is possible to further improve the wiping performance.
[0026]
A vehicle washer nozzle according to a seventh aspect of the present invention is the vehicle washer nozzle according to any one of the first to sixth aspects, wherein the nozzle tip has two different planes, and the diffusion injection port is The nozzle tip is provided on one surface side, and the jet injection port is provided on the other surface side of the nozzle tip.
[0027]
In the vehicle washer nozzle according to claim 7, since the diffusion injection port is provided on one surface side of the nozzle tip and the jet injection port is provided on the other surface side of the nozzle tip, It is possible to prevent the cleaning liquids injected from the mutually independent injection ports such as the diffusion flow and the jet flow from the jet injection ports from interfering with each other immediately after the injection and scattering and preventing the landing to the target landing point. In addition, it is also possible to form a mixed flow in which both jet streams are mixed immediately before landing and land the water.
[0028]
Further, for example, the jet flow injected from the jet injection port can be set independently of and above the diffusion flow injected from the diffusion injection port. Therefore, for example, even if the landing area of the diffusion flow injected from the diffusion injection port falls downward due to the influence of the air flow during high speed traveling (so-called wind), The jet stream ejected from the mouth is concentrated and landed, and is hardly affected by the airflow of the traveling wind, so that the cleaning liquid can be stably landed and supplied to the target landing point.
[0029]
The vehicular washer nozzle according to an eighth aspect of the present invention is the vehicular washer nozzle according to any one of the fourth to seventh aspects, wherein the communicating portion of the branch flow path to the jet injection port is a predetermined portion. It is characterized by having a narrowed shape.
[0030]
In the vehicular washer nozzle according to claim 8, since the communicating part to the jet injection port of the branch flow path has a predetermined narrow shape, the injection pressure of the jet flow injected from the jet injection port is preferably increased. It is possible to ensure the jet flow directivity and efficiently inject.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
[First Embodiment]
FIG. 1 is a perspective view showing the overall configuration of a washer nozzle 10 according to a first embodiment of the present invention. FIG. 2 shows a sectional view of the washer nozzle 10, and FIG. 3 shows a front view of the washer nozzle 10. Furthermore, FIG. 4 shows a cross-sectional view of the washer nozzle 10 taken along line 4-4 of FIG.
[0032]
The washer nozzle 10 includes a nozzle body 12 and a nozzle tip 14.
[0033]
The nozzle body 12 is made of resin, and is locked to a vehicle body panel (not shown) with the head portion 15 exposed. 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.
[0034]
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.
[0035]
A nozzle chip 14 formed by resin molding is integrally and liquid-tightly fitted in the chip housing portion 18. 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 diffusion injection port 26 are formed on the lower surface side (the lower side in FIGS. 1 to 3) of the nozzle chip 14.
[0036]
As shown in detail in FIG. 4, the oscillation chamber 24 includes a main flow path 28 that is continuous with the flow path 22 and communicates with the diffusion injection port 26, and a pair of feedback flow paths 30 that branch from the main flow path 28 to the left and right. The cleaning liquid from the flow path 22 is supplied. At this time, the feedback flow path 30 is configured to branch and guide a part of the cleaning liquid supplied from the flow path 22 and return it to the main flow path 28 again. As a result, the cleaning liquid guided to the feedback flow path 30 becomes a so-called “control flow” and causes the cleaning liquid flowing through the main flow path 28 to self-oscillate, and the self-oscillated cleaning liquid becomes a fan-like diffusion flow from the diffusion injection port 26. It is the structure which is injected. Therefore, the cleaning liquid can be sprayed in a relatively wide range, and the cleaning area can be increased.
[0037]
Furthermore, a branch channel 32 is formed on the upper surface side (the upper side in FIGS. 1 to 3) of the nozzle chip 14. The branch flow path 32 is formed to communicate with the flow path 22 and can independently guide a part of the cleaning liquid fed from the flow path 22 to the oscillation chamber 24. Further, a jet injection port 36 is formed at the tip of the branch flow path 32. The jet injection port 36 is open on the front side of the nozzle tip 14. That is, the jet injection port 36 is displaced with respect to the above-described diffusion injection port 26 along the diffusion direction of the diffusion flow from the diffusion injection port 26, more specifically, a large deviation from side to side and a little deviation from top to bottom. In the position. Thereby, the jet injection port 36 is a structure which can inject the washing | cleaning liquid from the branch flow path 32 by the independent jet flow with the directivity different from the diffusion flow injected from the diffusion injection port 26 mentioned above.
[0038]
Further, the communicating part of the branch flow path 32 to the jet injection port 36 is a throttle part 34 having a predetermined narrowed shape (throttle shape).
[0039]
As described above, the washer nozzle 10 has a so-called “fluidic nozzle” in which the diffusion injection port 26 is configured so that the cleaning liquid can be suitably diffused and injected from the diffusion injection port 26 as basic injection. ing.
[0040]
Here, FIG. 5 shows a front view of the cleaning liquid ejection area by the washer nozzle 10.
[0041]
The washer nozzle 10 is disposed corresponding to the wind glass G on the driver seat D side and the passenger seat P side, respectively, and the wiping range DH of the driver seat side wiper blade 40 and the wiping range PH of the passenger seat side wiper blade 42 are arranged. The cleaning liquid can be sprayed in the same spray pattern to each of the above.
[0042]
Specifically, from the washer nozzle 10, the diffusion flow injected from the diffusion injection port 26 is defined as “basic injection flow X”, and is set at a substantially central portion of the wiping ranges DH and PH of the wiper blades 40 and 42. The washing liquid lands on the first landing points DW1 and PW1 (basic injection), and the jet flow jetted from the jet jet port 36 is referred to as “auxiliary jet flow Y”, and the diffusion flow jetted from the diffusion jet port 26 The cleaning liquid injection area is set so as to land on the second water landing points DW2 and PW2 set above them independently (auxiliary injection).
[0043]
In addition, in this case, as shown in FIG. 7, the “basic injection flow X” of the diffusion flow injected from the diffusion injection port 26 has a smaller central portion of the diffusion angle of the diffusion injection injected from the diffusion injection port 26 than the both end portions. The liquid volume distribution is set. Moreover, the “auxiliary jet flow Y” of the jet flow jetted from the jet jet port 36 is set so as to be jetted from the jet jet port 36 toward the central portion of the “basic jet flow X”. That is, the second landing points DW2 and PW2 are set corresponding to the center portions in the width direction of the first landing points DW1 and PW1, respectively. Therefore, even if the “basic injection flow X” of the diffusion flow from the diffusion injection port 26 includes the central portion A in the left-right direction with a small liquid amount distribution, the “auxiliary injection flow that reaches the second landing points DW2 and PW2” As shown in FIG. 6, the cleaning liquid of “Y” can compensate for the non-uniformity of liquid quantity distribution (distribution of liquid quantity distribution) of basic injection (diffusion injection) from the diffusion injection port 26.
[0044]
The operation of the following first embodiment will be described.
[0045]
In the washer nozzle 10 having the above-described configuration, the cleaning liquid pumped from the tank 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 sent to the oscillation chamber 24 of the nozzle chip 14. In addition, at this time, a part of the cleaning liquid fed from the flow path 22 is branched and guided by the feedback flow path 30 and returned to the main flow path 28 again. As a result, the cleaning liquid guided to the feedback flow path 30 becomes a so-called control flow and causes the cleaning liquid flowing through the main flow path 28 to self-oscillate, and the self-excited oscillation cleaning liquid flows from the diffusion injection port 26 as a fan-like diffusion flow. Be injected.
[0046]
At the same time, a part of the cleaning liquid fed from the flow path 22 to the oscillation chamber 24 is guided to the branch flow path 32 of the nozzle chip 14 and is ejected from the jet ejection port 36 by a jet flow. That is, the jet stream ejected from the jet ejection port 36 is ejected as a directional independent jet unlike the diffusion flow ejected from the diffusion ejection port 26. Therefore, in this washer nozzle 10, not only can the cleaning liquid be sprayed and landed in a wide area with the fan-like diffusion flow from the diffusion injection port 26, but also the cleaning liquid can be concentrated from the jet injection port 36 with a directional jet flow. Can land on the water.
[0047]
Moreover, in this washer nozzle 10, the cleaning liquid reaches the first landing points DW1 and PW1 set within the wiping ranges of the wiper blade 40 on the driver seat D side and the wiper blade 42 on the passenger seat P side. As described above, the basic injection is performed by the “basic injection flow X” and the cleaning liquid reaches the second landing points DW2 and PW2 set above the “basic injection flow X” independently of the “basic injection flow X”. Auxiliary injection is performed by the auxiliary injection flow Y ”. In particular, the “basic injection flow X” of the diffusion flow injected from the diffusion injection port 26 is set to have a liquid amount distribution in which the central portion of the diffusion angle that is diffusely injected from the diffusion injection port 26 is smaller than both end portions. Therefore, it is possible to prevent the driving view from being disturbed by the landing of the diffusion jet. Moreover, the “auxiliary jet flow Y” of the jet flow jetted from the jet jet port 36 is jetted from the jet jet port 36 toward the central portion of the “basic jet flow X”. In other words, in the central portion in the width direction of the “basic jet flow X” with a small liquid volume distribution, the auxiliary jet is concentrated by the “auxiliary jet flow Y” intensively with a directional jet flow, Since it is water landing, the hindrance to the driving view due to the auxiliary injection is extremely small, and the shortage of the “basic injection flow X” (diffusion injection) can be compensated.
[0048]
In addition, even if the “basic jet flow X” reaches the lower part of the glass surface than the target landing area due to the influence of the traveling wind, the “auxiliary jet flow Y” is affected by the traveling wind. Since the jet stream is difficult to direct and is intensively jetted, it is possible to land at the target landing point. As a result, a sufficient amount of liquid can be supplied while preventing the driving view from being blocked by landing, and the driving view can be secured quickly in a short time without operating the wiper device (wiper blades 40, 42) multiple times. be able to.
[0049]
Furthermore, since the “auxiliary injection flow Y” supplements the basic injection by concentrating a relatively small amount of liquid with respect to the “basic injection flow X”, the cleaning liquid is excessively supplied and the cleaning liquid is supplied. In addition, the liquid is prevented from dripping or splashing due to excessive supply (the cleaning liquid is splashed off by the wiper blades 40 and 42 at the reverse position).
[0050]
Furthermore, with this washer nozzle 10, a single Nozzle tip 14 Are equipped with a diffusion injection port 26 and a jet injection port 36, which can inject not only “basic injection flow X” but also “auxiliary injection flow Y”, so that an independent feeding path is provided separately for auxiliary injection. Thus, there is no need to connect / route hoses to each, and the washer nozzle 10 itself can be made smaller.
In the first embodiment described above, the jet injection port 36 is formed in the nozzle tip 14 together with the branch flow path 32 independently of the diffusion injection port 26. However, the present invention is not limited to this. The path 32 may be formed in the nozzle tip 14 and the jet injection port 36 may be formed in the nozzle body 12.
[0051]
Further, in this case, the jet injection port 36 is preferably formed on the upper surface side with respect to the diffusion injection port 26 of the nozzle tip 14. However, as shown in FIG. You may form in the lower surface side with respect to the diffusion injection port 26 in the range of 14 thickness.
[0052]
In the first embodiment, the nozzle body 12 is mounted with the head 15 exposed on the body panel of the vehicle. However, the present invention is not limited to this, and as shown in FIG. It is good also as a structure attached to the lower surface side (back surface side) of F rear-end part.
[0053]
Next, another embodiment of the present invention will be described.
[0054]
Note that components that are basically the same as those in the first embodiment are given the same reference numerals as those in the first embodiment, and descriptions thereof are omitted.
[Second Embodiment]
FIG. 10 is a perspective view showing the configuration of the washer nozzle 50 according to the second embodiment.
[0055]
The washer nozzle 50 is composed of a nozzle body 52 and a nozzle tip 54.
[0056]
A pair of locking claws 53 extend toward the head 52B on the side wall of the base 52A of the nozzle body 52, and are locked with the head 52B exposed to a body panel (not shown).
[0057]
On the other hand, as shown in FIGS. 11 and 12, the nozzle chip 54 is formed on the lower surface side (lower side in FIG. 12) of the oscillation chamber 24 in the same manner as the nozzle chip 14 of the washer nozzle 10 according to the first embodiment. And the diffusion injection port 26 is formed.
[0058]
Furthermore, a branch channel 56 and a jet injection port 58 are formed on the lower surface side of the nozzle tip 54. The branch flow path 56 communicates with the flow path 22 (feeding path 20) and is integrated along the main flow path 28 of the oscillation chamber 24 (with the upper wall of the main flow path 28 partially cut away). The jet injection port 58 is continuously formed in a straight line shape, and is provided immediately above the diffusion injection port 26 continuously to the branch flow path 56. As a result, the jet injection port 58 can inject the cleaning liquid from the branch flow path 56 with a directional jet flow different from the diffusion flow injected from the diffusion injection port 26 described above without passing through the oscillation chamber 24. It is a possible configuration.
[0059]
The operation of the second embodiment will be described.
[0060]
In the washer nozzle 50 configured as described above, since the jet injection port 58 is provided immediately above the diffusion injection port 26, the jet flow injected from the jet injection port 58 intersects with the diffusion flow injected from the diffusion injection port 26. A portion having a small liquid amount distribution (for example, the center portion in the left-right direction as described in the first embodiment) in the injection pattern of the diffusion flow from the diffusion injection port 26. Can be complemented. This makes it possible to further improve the wiping performance.
[0061]
In addition, since the branch flow path 56 and the jet injection port 58 are integrally formed continuously in the oscillation chamber 24 of the nozzle chip 54, there is no influence on other parts of each part, and the part configuration is simple and compact. Can be.
[Third Embodiment]
FIG. 13 is a sectional view showing the overall configuration of the washer nozzle 60 according to the third embodiment.
[0062]
The washer nozzle 60 includes a resin nozzle body 62 attached to a vehicle body panel, and a resin nozzle tip 64 fitted in a recess 68 at an outlet portion of a feed path 66 formed in the nozzle body 62. Consists of. The supply path 66 is a passage for the cleaning liquid, and the recess 68 has a spherical inner peripheral surface. As shown in FIGS. 14 and 15, the base portion of the nozzle chip 64 has a spherical outer peripheral surface so that it can be fitted into the recess 68. For this reason, the nozzle tip 64 is attached to the recess 68 so as to be rotatable around its axis in a fitted state.
[0063]
In addition, the nozzle chip 64 has a flow passage 70 that opens at the rear end thereof extending in a cylindrical shape. The flow passage 70 communicates with the feed path 66 in a state where the nozzle tip 64 is press-fitted into the recess 68. The front end portion (exit portion) of the flow passage 70 is formed as a hemispherical dome.
[0064]
Further, the tip portion of the nozzle chip 64 has four extending portions 76 extending so as to be divided into four by cross-shaped grooves 72 and 74 cut from both sides of the tip. A bowl-shaped diffusion injection port 78 is formed at the bottom of the groove 72 so that the longitudinal direction thereof coincides with the extending direction of the groove 72 in a state where it communicates with the flow passage 70 at the dome portion. The central portion in the longitudinal direction of the diffusion injection port 78 is narrowed by a pair of constricted portions 80 that project symmetrically from both sides in the short direction. That is, the nozzle tip 64 has a throttle portion 80 in which the opening shape of the diffusion injection port 78 is a long hole in the width direction of the vehicle, and the center in the longitudinal direction is narrowed from the short direction. It has a configuration. Thereby, the nozzle chip 64 has a configuration in which the main flow of the cleaning liquid fed from the feeding path 66 can be fundamentally jetted from the diffusion jet port 78 with a diffusion flow whose central portion in the diffusion direction is narrowed. In this case, the liquid volume ratio is small at the center in the longitudinal direction of the diffusion jet port 78 and the liquid volume ratio is large on both sides in the longitudinal direction due to the action of the throttle 80 provided at the diffusion jet port 78. The quantity distribution will be taken.
[0065]
As described above, this washer nozzle 60 has a so-called “flat spray type nozzle” in which the diffusion injection port 78 is configured so that the cleaning liquid can be suitably diffusely injected from the diffusion injection port 78 as a basic injection. ing.
[0066]
Further, a branch channel 82 communicating with the flow passage 70 is formed in the nozzle tip 64 of the washer nozzle 60, and the front end portion of the branch channel 82 is located on the front side of the nozzle chip 64 (the groove 74. The jet injection port 84 is opened to the upper bottom portion). For this reason, a part of the cleaning liquid fed from the feed path 66 is guided by the branch flow path 82 to reach the jet injection port 84, and has a directivity different from that of the diffusion flow fundamentally injected from the diffusion injection port 78. It is the structure which can carry out auxiliary injection intensively with a jet stream.
[0067]
Moreover, in this case, the “basic injection” of the diffusion flow injected from the diffusion injection port 78 is set to have a liquid amount distribution in which the central part of the diffusion angle that is diffusely injected from the diffusion injection port 78 is smaller than both end parts. . Moreover, the “auxiliary injection” of the jet flow injected from the jet injection port 84 is set to be injected from the jet injection port 84 toward the central portion of the “basic injection”. Therefore, even if the “basic injection” of the diffusion flow from the diffusion injection port 78 has a central portion with a small liquid volume distribution in the left-right direction, the basic injection (diffusion injection) from the diffusion injection port 78 is performed by the cleaning liquid by the “auxiliary injection”. ) Of the liquid amount distribution (the uneven distribution of the liquid amount distribution) can be supplemented.
[0068]
Next, the operation of the third embodiment will be described.
[0069]
In the washer nozzle 60 configured as described above, basic injection is performed with a diffusion flow diffused in the vehicle width direction from the diffusion injection port 78, and the jet flow with the directivity different from the diffusion flow is concentrated from the jet injection port 84. Auxiliary injection is made.
[0070]
Here, also in this washer nozzle 60, as in the first and second embodiments described above, the basic injection from the diffusion injection port 78 is diffusion injection, and the central part of the diffusion angle of the diffusion injection is at both ends. Since the liquid amount distribution is set to be smaller than that of the part, it is possible to prevent the driving view from being disturbed by the landing of the diffusion jet. In addition, the auxiliary injection is concentrated in the central portion in the width direction of the basic injection with a small liquid volume distribution from the jet injection port 84 by a directional jet flow, and the jet flow is not spread, so that the auxiliary injection is performed. The hindrance to the driving field of view due to the injection is extremely small, and the shortage of the liquid amount of the basic injection (diffusion injection) can be supplemented.
[0071]
Moreover, even when the basic jets land at the lower part of the glass surface than the target landing area due to the influence of the driving wind during high-speed driving, the auxiliary injection is a directional jet flow that is hardly affected by the driving wind. Since it is injected intensively, it is possible to land at a target landing point. As a result, a sufficient amount of liquid can be supplied while preventing the driving view from being disturbed by landing, and the driving view can be secured quickly in a short time without operating the wiper device (wiper blade) multiple times. .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a washer nozzle according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a configuration of a washer nozzle according to the first embodiment of the present invention.
FIG. 3 is a front view showing a configuration of a washer nozzle according to the first embodiment of the present invention.
4 is a cross-sectional view taken along line 4-4 of FIG. 3 showing the configuration of the washer nozzle according to the first embodiment of the present invention.
FIG. 5 is a front view showing a cleaning liquid ejection area of the washer device to which the washer nozzle according to the first embodiment of the present invention is applied.
FIG. 6 is a schematic plan view showing a liquid amount distribution state of the cleaning liquid ejected by the washer nozzle according to the first embodiment of the present invention.
FIG. 7 is a schematic plan view showing a liquid amount distribution state of the cleaning liquid that is fundamentally injected from the diffusion injection port of the washer nozzle according to the first embodiment of the present invention.
FIG. 8 is a cross-sectional view showing a configuration of a washer nozzle according to a modification of the first embodiment of the present invention.
FIG. 9 is a cross-sectional view showing a mounting state of a washer nozzle according to a modification of the first embodiment of the present invention.
FIG. 10 is a perspective view showing a configuration of a washer nozzle according to a second embodiment of the present invention.
FIG. 11 is a back view showing a configuration of a nozzle tip of a washer nozzle according to a second embodiment of the present invention.
FIG. 12 is a front view showing a configuration of a nozzle tip of a washer nozzle according to a second embodiment of the present invention.
FIG. 13 is a cross-sectional view showing a configuration of a washer nozzle according to a third embodiment of the present invention.
FIG. 14 is a cross-sectional view showing a configuration of a nozzle tip of a washer nozzle according to a third embodiment of the present invention.
FIG. 15 is a perspective view showing a configuration of a nozzle tip of a washer nozzle according to a third embodiment of the present invention.
[Explanation of symbols]
10 ··· Washer nozzle, 12 ·· Nozzle body, 14 ·· Nozzle tip, 20 ·· Feeding path, 22 ·· Flow path, 24 ·· Oscillation chamber, 26 ·· Diffusion injection port, 28 ·· Main flow path, 30 .. Feedback flow path, 32.. Branch flow path, 34..

Claims (8)

In the vehicle washer nozzle that supplies the cleaning liquid to the windshield glass of the vehicle,
A nozzle body in which a feeding path for guiding and feeding the pumped cleaning liquid is formed and fixed to the vehicle;
A nozzle tip integrally assembled in the nozzle body;
A diffusion injection port that is formed in the nozzle tip and that performs basic injection with a diffusion flow diffused in the width direction of the vehicle and communicating with the supply path from the supply path;
A part of the cleaning liquid that is formed on the nozzle body or the nozzle tip and that is fed from the feeding path is concentrated in a jet flow having a directivity different from the diffusion flow that is fundamentally jetted from the diffusion jet port. A jet injection port for auxiliary injection,
With
The basic injection is set to a liquid volume distribution in which the central part of the diffusion angle diffused and injected from the diffusion injection port is smaller than both end parts,
The auxiliary injection is set so as to be injected from the jet injection port toward the central portion of the basic injection.
This is a vehicle washer nozzle. The nozzle tip has an oscillation chamber that self-oscillates the main flow of the cleaning liquid sent from the supply path, and the basic injection from the diffusion injection port by a diffusion flow in which the cleaning liquid is oscillated in the width direction of the vehicle. To
The vehicle washer nozzle according to claim 1. The nozzle tip has a throttle portion in which the opening shape of the diffusion jet port is a long hole shape in the width direction of the vehicle and the center in the longitudinal direction is narrowed narrowly from the short side direction. The main flow of the cleaning liquid that has been sent is fundamentally injected from the diffusion injection port in a diffusion flow in which the central portion in the diffusion direction is narrowed
The vehicle washer nozzle according to claim 1. The nozzle tip is integrally assembled in the nozzle body in a liquid-tight state, and has a branch flow path that guides a part of the cleaning liquid fed from the feeding path to the jet injection port.
The vehicle washer nozzle according to any one of claims 1 to 3. The injection angle of the auxiliary injection from the jet injection port has a predetermined angular relationship with respect to the injection angle of the basic injection from the diffusion injection port.
The vehicle washer nozzle according to any one of claims 1 to 4, wherein the vehicle washer nozzle is provided. The jet injection port is formed in the nozzle body or the nozzle tip independently of the diffusion injection port.
The vehicle washer nozzle according to any one of claims 1 to 5, wherein the vehicle washer nozzle is provided. The nozzle tip has two different planes;
The diffusion injection port is provided on one surface side of the nozzle tip, and the jet injection port is provided on the other surface side of the nozzle tip,
The vehicle washer nozzle according to any one of claims 1 to 6. The communication part of the branch flow path to the jet injection port has a predetermined narrow shape,
The vehicle washer nozzle according to any one of claims 4 to 7.

Images