JP6215012B2 - Washer nozzle - Google Patents

Description

  The present invention relates to a washer nozzle that injects a cleaning liquid toward a cleaning surface.

  Conventionally, a vehicle such as an automobile is provided with a washer device for removing dirt such as dust adhering to a cleaning surface, for example, a surface of a windshield. The washer device is equipped with a pump that operates by operating a wiper switch provided in the passenger compartment, and the cleaning liquid in the washer tank is sucked and discharged by the pump, and the cleaning liquid discharged from the pump is cleaned through a hose and a washer nozzle. Sprayed on the surface. The dirt attached to the surface of the windshield can be removed by reciprocating the wiper blade along with the cleaning liquid.

  The washer nozzle is provided with a nozzle main body for injecting a cleaning liquid. As the nozzle main body, a so-called diffusion type nozzle main body capable of injecting the cleaning liquid over a wide range of the cleaning surface is known. This diffusion type nozzle body can efficiently clean the cleaning surface with a small amount of cleaning liquid. The diffusion type nozzle body has a structure in which protrusions are provided in the flow path for diffusing the cleaning liquid, and the nozzle body is assembled by combining a plurality of nozzle bodies. A washer nozzle having such an assembled nozzle body is described in, for example, Patent Document 1 and Patent Document 2.

  The nozzle body of the washer nozzle described in Patent Document 1 includes a first nozzle body and a second nozzle body which are provided with a flow path inside and formed in the same shape (hemisphere). And a 1st nozzle body and a 2nd nozzle body are faced | matched, and a flow path is formed between a 1st nozzle body and a 2nd nozzle body. And it is the 1st nozzle body and the 2nd nozzle body, Comprising: The resin of a molten state is supplied to the groove part formed in the circumference | surroundings of abutting surface, resin solidifies, and the 1st nozzle body and the 2nd nozzle body couple | bond together Is done.

  The nozzle body of the washer nozzle described in Patent Document 2 includes a first nozzle body that includes a flow path and an injection port therein, and a second nozzle body that faces the first nozzle body. Then, after the first nozzle body and the second nozzle body are brought into contact with each other, the gap between the edge of the opening and the second nozzle body is closed with a molten resin, and the resin is solidified to cause the first nozzle body and the second nozzle body to be solidified. The nozzle body is coupled.

Japanese Patent Laying-Open No. 2009-227209 (FIGS. 2, 6, and 7) Japanese Patent Laying-Open No. 2013-1265 (FIGS. 2 to 6)

  However, since the nozzle body described in Patent Documents 1 and 2 described above acts in a direction in which the pressure of the cleaning liquid passing through the flow path separates the first nozzle body and the second nozzle body, There was a problem in that the bonding strength with the second nozzle body was lowered.

  The objective of this invention is providing the washer nozzle which can ensure the joint intensity | strength of a 1st nozzle body and a 2nd nozzle body.

A washer nozzle according to the present invention is a washer nozzle comprising a nozzle body for injecting a cleaning liquid toward a cleaning surface, and a nozzle holding member for holding the nozzle body, forming the nozzle body, and forming a recess. A first nozzle body, a second nozzle body that forms the nozzle body, and that is provided in the recess and forms a flow path for a cleaning liquid between the first nozzle body and the first nozzle body. And a covering member that covers all the portions of the second nozzle body exposed from the recess.

  The washer nozzle of the present invention is provided with a fixing portion for fixing the covering member to the first nozzle body, and the fixing portion is formed on the protrusion formed on the covering member and the first nozzle body, and And a hole into which the protrusion is fitted.

  The washer nozzle according to the present invention includes the nozzle body including an inlet disposed upstream of the flow path in the flow direction of the cleaning liquid, and an injection port disposed downstream of the flow path. A main flow path for flowing the cleaning liquid flowing in from the inlet toward the injection port, and a sub-flow path for returning the cleaning liquid from the downstream end of the main flow path to the upstream end of the main flow path.

  According to the present invention, since the covering member is fixed to the first nozzle body, it is possible to ensure the coupling strength between the first nozzle body and the second nozzle body.

  According to the present invention, the entire portion of the second nozzle body exposed from the recess is covered with the covering member. Accordingly, the coupling strength between the first nozzle body and the second nozzle body can be further improved. Furthermore, the appearance accuracy of the nozzle body can be improved.

  According to the present invention, since the protrusion formed on the covering member is fitted into the hole formed in the first nozzle body, the contact area between the covering member and the first nozzle body is widened. Accordingly, the coupling strength between the first nozzle body and the second nozzle body can be further improved.

  According to the present invention, a part of the cleaning liquid flowing into the main channel from the inlet is returned to the main channel via the sub channel. Accordingly, the cleaning liquid ejected from the ejection port vibrates.

It is a figure which shows the vehicle equipped with the washer nozzle of this invention. It is a perspective view which expands and shows the washer nozzle of the present invention. It is side surface sectional drawing of the washer nozzle of this invention. It is a top view of the nozzle body used for the washer nozzle of the present invention. It is side surface sectional drawing of the nozzle main body used for the washer nozzle of this invention. It is a disassembled perspective view of the nozzle main body used for the washer nozzle of this invention. It is a top view of the 1st nozzle body shown by FIG.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a vehicle 10 such as an automobile is provided with a windshield 11 as a windshield. On the windshield 11, a first wiper member 12 and a second wiper member 13 are movably provided. The first wiper member 12 is disposed in front of the driver seat, and the second wiper member 13 is disposed in front of the passenger seat.

  The first wiper member 12 includes a wiper blade 12a and a wiper arm 12b, and the wiper blade 12a is rotatably mounted on the distal end side of the wiper arm 12b. The second wiper member 13 includes a wiper blade 13a and a wiper arm 13b, and the wiper blade 13a is rotatably mounted on the distal end side of the wiper arm 13b.

  A link mechanism that converts the rotational force of the wiper motor into the swinging force of the wiper arms 12b and 13b is provided on the base end side of the wiper arms 12b and 13b. The power of the wiper motor is transmitted to the wiper blades 12a and 13a, and the wiper blades 12a and 13a oscillate within a predetermined angle range. That is, the wiper blade 12a reciprocates within the wiping range 11a on the windshield 11, and the wiper blade 13a reciprocates within the wiping range 11b on the windshield 11.

  A bonnet 10 a is provided on the front side of the vehicle 10. Near the windshield 11 of the bonnet 10a, two washer nozzles 14 are attached. One end side of a hose is attached to the two washer nozzles 14, and the other end side of the hose is connected to a washer tank via a pump. The two washer nozzles 14 both have a structure in which the cleaning liquid is diffused and sprayed.

  On the other hand, a wiper switch is provided in the vehicle 10 and when the operator operates the wiper switch, the pump sucks and discharges the cleaning liquid in the washer tank. The cleaning liquid discharged from the pump is sprayed from the two washer nozzles 14, and the cleaning liquid sprayed from the two washer nozzles 14 is scattered in the spray ranges 15 a and 15 b on the windshield 11.

  Since the two washer nozzles 14 have the same structure, the one washer nozzle 14 will be described with reference to FIGS. 2 and 3 for convenience. The washer nozzle 14 has a nozzle holding member 20 and a nozzle main body 30, and the nozzle holding member 20 is formed of synthetic resin.

  The nozzle holding member 20 includes a head portion 21 and a connection portion 22 that are molded separately, and the head portion 21 and the connection portion 22 are coupled to each other. The head 21 has a recess 21a that faces the windshield 11 in a fixed state to the bonnet 10a. The inner surface of the recess 21a is formed in a spherical shape, and the nozzle body 30 is attached to the recess 21a. The nozzle body 30 is rotatably held by the recess 21a.

  The connecting portion 22 is formed in a cylindrical shape, and the connecting portion 22 includes a flow path 22a through which the cleaning liquid flows. The flow path 22a is connected to the flow path 21c of the head portion 21, and the cleaning liquid flowing through the flow path 22a is guided to the nozzle body 30 through the flow path 21c.

  A shoulder portion 22b is provided at the other end of the connection portion 22, one end of the hose is connected to the shoulder portion 22b, and the other end of the hose is connected to a discharge port of the pump. The shoulder 22b has an outer diameter larger than that of other portions so as to prevent the hose from falling off. A pair of engaging claws 21 b are provided on the connection portion 22 side of the head portion 21. When the connecting portion 22 is inserted into the mounting hole of the bonnet 10a, the pair of engaging claws 21b come into contact with the bonnet 10a and elastically deform, and the pair of engaging claws 21b engage with the bonnet 10a. In this way, the washer nozzle 14 is fixed to the bonnet 10a by the engaging force of the pair of engaging claws 21b.

  The structure of the nozzle body 30 will be described with reference to FIGS. The nozzle body 30 includes a first nozzle body 31 and a second nozzle body 32. The nozzle body 30 has a covering member 33 that covers the second nozzle body 32. Here, the first nozzle body 31, the second nozzle body 32, and the covering member 33 are all made of synthetic resin.

  The nozzle body 30 is formed in a spherical shape by fixing the first nozzle body 31 and the second nozzle body 32 with a covering member 33. Further, the nozzle body 30 is press-fitted toward the recess 21a, the head 21 is elastically deformed, and the nozzle body 30 is fitted into the recess 21a. When the operator applies a force to the nozzle body 30, the nozzle body 30 can rotate within the recess 21a. That is, the inclination angle of the nozzle body 30 with respect to the nozzle holding member 20 can be adjusted. The inclination angle of the nozzle body 30 with respect to the nozzle holding member 20 can be represented by an angle formed by the center line of the flow path 21 c and the center line of the flow path of the nozzle body 30. When the inclination angle of the nozzle main body 30 with respect to the nozzle holding member 20 is changed, the spray position of the cleaning liquid with respect to the windshield 11 can be adjusted.

  The first nozzle body 31 includes a spherical portion 34 having a surface with a curvature radius substantially the same as the curvature radius of the concave portion 21 a and an ejection side convex portion 35 protruding from the spherical portion 34. The spherical portion 34 is provided with a concave portion 36, and the concave portion 36 has a bottom surface 37. The recess 36 is opened in the end surface 41 of the spherical portion 34. The end surface 41 of the spherical portion 34 is flush with the surface 35 a of the ejection side convex portion 35. Further, a pair of step portions 42 is provided in the recess 36. The height from the bottom surface 37 of the pair of step portions 42 is lower than the height from the bottom surface 37 to the end surface 41.

  In addition, an inflow port 38 is provided in the spherical portion 34, and the inflow port 38 is connected to the flow path 21 c and to the recess 36. When the first nozzle body 31 is viewed in plan, the inflow port 38 has a taper that becomes narrower as it approaches the recess 36. That is, the opening area on the inlet side of the inflow port 38 is set larger than the opening area on the outlet side. For this reason, the flow rate of the cleaning liquid increases when it flows into the recess 36 from the inlet 38. Further, the spherical portion 34 is provided with a hole 44 penetrating from the end surface 41 to the inflow port 38. When the first nozzle body 31 is viewed in plan, the hole 44 is disposed immediately above the inflow port 38.

  Further, the ejection side convex portion 35 is provided with an ejection port 40 connected to the concave portion 36. When the first nozzle body 31 is viewed in a plan view, the injection port 40 has a taper that becomes narrower as it approaches the recess 36. That is, the opening area on the inlet side of the injection port 40 is narrower than the opening area on the outlet side. When the first nozzle body 31 is viewed in plan, the concave portion 36, the inflow port 38, and the injection port 40 have a line-symmetric shape with respect to the center line A.

  Further, when the first nozzle body 31 is viewed in plan, the pair of step portions 42 have a line-symmetric shape with respect to the center line A. The inner wall surfaces of the pair of step portions 42 are extended along the center line A and are parallel to each other. Further, a pair of flow path forming convex portions 39 is provided continuously to the bottom surface 37. When the first nozzle body 31 is viewed in plan, the pair of flow path forming convex portions 39 are disposed between the pair of step portions 42. The pair of flow path forming convex portions 39 includes a straight portion 39a parallel to the center line A and a protruding portion 39b extending from the straight portion 39a toward the center line A. When the first nozzle body 31 is viewed in plan, the pair of flow path forming convex portions 39 has a line-symmetric shape with respect to the center line A. Further, the height of the pair of flow path forming convex portions 39 with respect to the bottom surface 37 is the same as the height of the pair of step portions 42 with respect to the bottom surface 37.

  In this way, the main flow path B passing between the flow path forming convex portions 39 is formed in the concave portion 36. The main flow path B connects the inlet 38 and the injection port 40. Further, sub flow paths C are respectively formed between the inner wall surface of the recess 36 and the inner wall surface of the stepped portion 42 and the pair of flow path forming convex portions 39. The two sub-channels C are channels that connect the downstream end of the main channel B and the upstream end of the main channel B within the recess 36. Upstream and downstream represent the flow direction of the cleaning liquid, the downstream end of the main flow path B is the location closest to the injection port 40 in the main flow path B, and the upstream end of the main flow path B is in the main flow path B This is the location closest to the inlet 38.

  The second nozzle body 32 has a fitting portion 43 fitted into the recess 36 of the first nozzle body 31. When the nozzle body 30 is viewed in plan, a part of the fitting portion 43 overlaps the stepped portion 42. Further, when the nozzle body 30 is viewed in plan, a part of the fitting portion 43 overlaps the end surface 41 and also overlaps the surface 35 a of the ejection side convex portion 35.

  The first nozzle body 31 is provided with holes 45 and 46 that open to the surface 35 a of the ejection side convex portion 35. One hole 45 is provided, and two holes 46 are provided. When the first nozzle body 31 is viewed in plan, the hole 45 is disposed immediately above the ejection port 40, and the hole 45 is connected to the ejection port 40. The two holes 46 are not connected to the injection port 40. When the first nozzle body 31 is viewed in a plan view, the one hole 45 and the two holes 46 are arranged side by side in a direction intersecting the center line A, specifically, a direction orthogonal to each other. When the first nozzle body 31 is viewed in plan, one hole 45 is disposed between the two holes 46. Further, the holes 44, 45, 46 are not blocked by the second nozzle body 32.

  Furthermore, the first nozzle body 31 is provided with a protruding portion 47 protruding from the surface 35a. The protrusion 47 is not covered with the second nozzle body 32. Further, when the nozzle body 30 is viewed in plan, the hole 45 is disposed between the protrusion 47 and the recess 36 in the direction along the center line A.

  On the other hand, the covering member 33 has an outer peripheral shape extending outside the outer periphery of the second nozzle body 32 in a plan view of the nozzle body 30. The covering member 33 includes a main body portion 48 that covers the second nozzle body 32, and an overhang portion 49 that is continuous with the main body portion 48. The main body 48 is substantially circular in a plan view of the nozzle main body 30. The main body 48 has a recess 50 that houses a part of the second nozzle body 32. The main body 48 has an edge 51 provided around the recess 50, and the edge 51 is in close contact with the end surface 41.

  An anchor 52 is provided at the edge 51, and the anchor 52 is located in the hole 44. The overhanging portion 49 is provided with anchors 53 and 54. One anchor 53 is located in the hole 45, and the two anchors 54 are located in the two holes 46, respectively. One anchor 53 is in close contact with the inner surface of the hole 45, and the two anchors 54 are in close contact with the inner surfaces of the two holes 46. When the nozzle body 30 is viewed in plan, the concave portion 50 is disposed between the anchor 52 and the anchors 53 and 54.

  As described above, the covering member 33 is in close contact with the first nozzle body 31, so that the covering member 33 covers the second nozzle body 32, and the covering member 33 is formed between the first nozzle body 31 and the second nozzle body 32. Seal the contact area, that is, the gap. In addition, the recessed part 49a is provided in the overhang | projection part 49, and the protrusion part 47 fits into the recessed part 49a. In a state where the covering member 33 is fixed to the first nozzle body 31, the covering member 33 covers the entire portion of the second nozzle body 32 exposed from the recess 36.

  Next, the self-vibration action of the cleaning liquid in the nozzle body 30, that is, the diffusing action of the cleaning liquid in the main flow path B and the sub flow path C will be described. The cleaning liquid that has flowed into the recess 36 from the inflow port 38 travels toward the injection port 40 along the main flow path B as shown in FIG. Since the cleaning liquid is diffused when passing between the protrusions 39b, a part of the cleaning liquid flowing through the main flow path B flows away from the center line A and branches to the sub flow path C. The cleaning liquid branched to the sub flow path C flows in the opposite direction to the main flow path B, returns to the upstream end of the main flow path B, and merges with the cleaning liquid flowing in the main flow path B. As described above, the sub-channel C is joined to the main channel B as a feedback flow, so that the cleaning liquid ejected from the ejection port 40 vibrates. As a result, the cleaning liquid diffuses over a wide range from the injection port 40 toward the windshield 11.

  In the use state where the nozzle body 30 of the present embodiment is attached to the nozzle holding member 20, the pressure of the cleaning liquid flowing through the main flow path B is applied to the fitting portion 43 of the second nozzle body 32. This pressure is upward in FIG. 5, that is, a force that causes the second nozzle body 32 to escape from the recess 36. On the other hand, the covering member 33 covers the entire outer surface of the second nozzle body 32, and the anchors 52, 53, 54 of the covering member 33 are positioned in the holes 44, 45, 46 of the first nozzle body 31. The second nozzle body 32 is strongly fixed to the first nozzle body 31. This is because the contact area between the first nozzle body 31 and the covering member 33 is wide.

  For this reason, the coupling strength between the first nozzle body 31 and the second nozzle body 32 is ensured, and there is no gap at the contact location between the first nozzle body 31 and the second nozzle body 32. That is, the sealing member 33 improves the sealing performance between the first nozzle body 31 and the second nozzle body 32. Therefore, it is possible to prevent the cleaning liquid from leaking from between the first nozzle body 31 and the second nozzle body 32, and it is possible to maintain the ejection characteristics of the cleaning liquid favorably.

  Moreover, since it can prevent that the 2nd nozzle body 32 moves in the direction which pulls out from the recessed part 36, it can prevent that the height h1 of the main flow path B changes. That is, the height h1 of the main flow path B can be made the same as the height of the inflow port 38 and the height of the injection port 40, and the cleaning liquid injection characteristics can be maintained well.

  In this way, since the cleaning liquid spraying characteristics in the nozzle body 30 can be maintained well, the cleaning liquid can be sprayed to the target spraying ranges 15a and 15b, and the wiping operation of the wiper blades 12a and 13a can be performed normally. Further, since the second nozzle body 32 does not float from the first nozzle body 31, it is possible to suppress the appearance of the nozzle body 30 from being damaged. Furthermore, by improving the appearance accuracy of the nozzle body 30, the assembly accuracy of the nozzle body 30 with respect to the nozzle holding member 20 can be improved. Thereby, the jetting characteristics of the cleaning liquid can be maintained satisfactorily.

  Next, an example of the manufacturing process of the nozzle body 30 will be described. First, a core, a insert, a slide piece, etc. are placed in a mold having a first divided mold and a second divided mold, and the mold is closed to form a cavity having a shape corresponding to the first nozzle body 31. Form. Then, when a molten resin material is poured into the cavity through the gate and the resin material is solidified, the first nozzle body 31 is formed.

  Further, similarly to the first nozzle body 31, a cavity having a shape corresponding to the second nozzle body 32 is formed. Then, when the molten resin material is poured into the cavity through the gate and the resin material is solidified, the second nozzle body 32 is formed.

  Further, the first nozzle body 31 and the second nozzle body 32 are combined, and a core, a nest, a slide piece, and the like are placed, and a cavity having a shape corresponding to the covering member 33 is formed. When a molten resin material is poured into the cavity through the gate, the resin material flows to cover the second nozzle body 32, and the resin material is solidified to form the covering member 33. During this process, a part of the flowing resin material enters the holes 44, 45, 46 of the first nozzle body 31 and solidifies to form anchors 52, 53, 54.

  Through the above process, the nozzle body 30 in which the first nozzle body 31 and the second nozzle body 32 are firmly bonded by the covering member 33 is manufactured. That is, the first nozzle body 31, the second nozzle body 32, and the covering member 33 are vulcanized and bonded. Thereafter, the mold is opened and the nozzle body 30 is taken out.

  In the nozzle main body 30 of the present embodiment, the resin material is injected into the cavity and the covering member 33 is formed in a state where the first nozzle body 31 and the second nozzle body 32 are placed in the mold. The resin material flowing in the cavity enters the holes 44, 45, 46 of the first nozzle body 31. Here, the reaction force of the injection pressure of the resin material can prevent the second nozzle body 32 from moving away from the first nozzle body 31, that is, floating. This is because the reaction force of the injection pressure and the amount of change when the resin material is solidified can be received by the inner surfaces of the holes 44, 45, 46. Here, the amount of change when the resin material is solidified is an amount by which the shrinkage stress applied to the resin material changes when the resin material is solidified. For this reason, it can prevent that a clearance gap is formed in the contact location of the 1st nozzle body 31 and the 2nd nozzle body 32 in the manufacturing process of the nozzle main body 30. FIG. Therefore, the same effect as described above can be obtained in a state where the nozzle body 30 is attached to the nozzle holding member 20.

  The correspondence between the items described in this embodiment and the configuration of the present invention will be described as follows. The windshield 11 corresponds to the cleaning surface of the present invention, the recess 36 corresponds to the recess of the present invention, the anchors 52, 53, 54 correspond to the protrusion of the present invention, and the holes 44, 45, 46 are The anchors 52, 53, and 54 and the holes 44, 45, and 46 correspond to the fixing portions of the present invention.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. The present invention includes a washer nozzle in which an anchor and a planar shape of a hole in which the anchor is disposed are a circle, an ellipse, a triangle, a quadrangle, and the like. The present invention also includes a washer nozzle in which an anchor is provided in the first nozzle body and a hole in which the anchor is disposed is provided in the covering member. In the present invention, the anchor and the number of holes in which the anchor is disposed are not limited. Further, in the present invention, in the shape of the anchor and the hole in which the anchor is disposed, the combination of the through hole and the non-through hole can be freely combined. In addition, the present invention includes a projecting portion protruding from the surface and a recessed portion of the overhanging portion, and the shape of the protruding portion protruding from the recessed portion and the overhanging portion of the surface is not limited. The present invention also includes a sprayer for injecting the cleaning liquid onto the windshield of the vehicle and a washer nozzle for injecting the cleaning liquid onto the rear glass of the vehicle. The present invention also includes a washer nozzle provided other than the hood of the vehicle. In the present invention, the number of washer nozzles provided for the vehicle is not limited to two. That is, in the present invention, the number of washer nozzles provided in the vehicle includes one, or three or more. Furthermore, the present invention includes a washer nozzle for cleaning windshields of aircraft, railway vehicles, and the like.

DESCRIPTION OF SYMBOLS 10 Vehicle 10a Bonnet 11 Front glass 11a, 11b Wiping range 12 1st wiper member 12a, 13a Wiper blade 12b, 13b Wiper arm 13 2nd wiper member 14 Washer nozzle 15a, 15b Injection range 20 Nozzle holding member 21 Head 21a, 36, 49a, 50 Concave part 21b Engagement claw 21c, 22a Flow path 22 Connection part 22b Shoulder part 30 Nozzle body 31 First nozzle body 32 Second nozzle body 33 Cover member 34 Spherical part 35 Injection side convex part 35a Surface 37 Bottom face 38 Inlet 39 Flow path forming convex part 39a Linear part 39b Protruding part 40 Injection port 41 End face 42 Step part 43 Fitting part 44, 45, 46 Hole 47 Protruding part 48 Main part 49 Overhanging part 51 Edge part 52, 53, 54 Anchor A Center Line B Main channel C Sub channel

Claims (3)

A washer nozzle comprising a nozzle body for injecting a cleaning liquid toward the cleaning surface, and a nozzle holding member for holding the nozzle body,
A first nozzle body that forms the nozzle body and includes a recess;
A second nozzle body that forms the nozzle body and that is provided in the recess to form a flow path of a cleaning liquid between the first nozzle body;
A covering member that is fixed to the first nozzle body and covers all the portions of the second nozzle body exposed from the recess;
Having a washer nozzle. The washer nozzle according to claim 1,
A fixing portion for fixing the covering member to the first nozzle body is provided;
The fixing part is
A protrusion formed on the covering member;
A hole formed in the first nozzle body and into which the protrusion is fitted;
Including washer nozzle. The washer nozzle according to claim 1 or 2,
The nozzle body is
An inlet disposed upstream of the flow path in the flow direction of the cleaning liquid;
An injection port disposed downstream of the flow path;
With
The flow path is
A main flow path for flowing the cleaning liquid flowing in from the inlet toward the injection port;
A sub flow path for returning the cleaning liquid from the downstream end of the main flow path to the upstream end of the main flow path ;
Including washer nozzle.

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