DE10125898B4 - nozzle - Google Patents

Abstract

Spray nozzle device, comprising:
a cylinder (60) having a first end portion having a nozzle (110) and a second end portion having an opening;
a hollow cylindrical piston (84) forming a fluid flow passage, the piston engaging and slidably engaging the cylinder (60) with one end portion through the opening and a connecting portion (98) for connection at the other end to a fluid source, and
a seal ring (82) fixedly disposed on an inner peripheral surface of the second end portion of the cylinder to provide a sealing connection with an outer peripheral surface of the piston, the nozzle (110) in a nozzle end portion facing the piston (84) forming a fluid flow passage has a hollow valve receiving section (116), in which a ball valve (118) is received, the spring-loaded ball of which can be moved in the direction of a blocking position in the longitudinal direction of the valve receiving section (116) between the blocking position and a release position, limiting the movement of the ...

Description

The invention provides a spray nozzle device for example, a cleaning liquid for removing Ejecting dirt on a headlight of a vehicle.

The invention also creates a shut-off valve to, for example, a cleaning liquid Removing dirt on a headlight of a vehicle to a nozzle to lead when the one supplied by a pump cleaning fluid a fluid pressure between that for supplying the cleaning liquid provided pump and the intended for spraying the cleaning liquid Nozzle reached, what pressure bigger or is equal to a predetermined value.

As a removal mechanism of dirt is attached to a headlight of a vehicle Mechanism known in which a spray nozzle for a cleaning liquid is close of the headlight is provided, the cleaning liquid from the spray nozzle to the surface of the headlight is applied, so that the dirt remove. As a spray nozzle for the above mentioned Mechanism is also a Mechanism has been used in which a main body part of the nozzle in one Piston is provided, which is formed in a cylindrical shape, wherein the piston is received in a cylinder such that the main body the nozzle slide freely along the axial direction of the cylinder and piston can.

There is a shut-off valve in the spray nozzle with the above structure provided between the piston and the main body part of the nozzle, which shut-off valve is continuously closed until an internal pressure reaches or exceeds a predetermined value on the piston side. The cleaning liquid is continually or by the driving force of a motor pump or the like intermittently over a Inner portion of the cylinder to an inner portion of the piston fed. Because the shut-off valve is continuously closed until the internal pressure on the piston side reaches the predetermined value like that above mentioned is press the elevated Internal pressure of the cylinder and the piston push the piston out of the cylinder. When the piston is pushed out at a predetermined position is stopped, the internal pressure of the cylinder and the piston continuously higher. If, in this state, the internal pressure on the piston side is the predetermined one Value is reached, the closed state of the Shutoff valve is abandoned and the cleaning fluid is applied to the main body section the nozzle guided, to be so sprayed out.

A spray nozzle in which the main body of the nozzle according to the above Description is movable, is generally sealed to prevent the cleaning fluid from an open Can exit the end of the cylinder. This seal was through Providing a so-called rubber or synthetic O-ring Resin with the same elasticity like rubber, which is in a ring shape at an outer peripheral end portion of the piston is formed on a base end side of the cylinder located. However, when the internal pressure of the cylinder rises, occurs on the central portion of the cylinder in its axial direction expansion to and the inside diameter of the cylinder is increased. In In this state there is a gap between the above O-ring and an inner peripheral portion of the cylinder, giving one possibility is created that the cleaning liquid from this space exit.

There is also a device for removing the adhering to a headlight of a vehicle Dirt, which is structured as a headlight cleaner, that a cleaning liquid to the surface of the headlight is applied to remove the dirt. One such example is in Japanese Utility Model Application Laid-Open (JP-U) No. 6-29960. The following is a brief description the headlamp cleaning device given in JP-U no. 6-29960 is shown.

The headlamp cleaning device is provided with a nozzle housing, that on a bumper of the Vehicle is attached. The nozzle housing is partially formed in a substantially cylindrical shape and extends through a hole formed in the bumper. In A cleaning liquid spray nozzle is received at one end of a cylindrical portion of the nozzle housing. Furthermore, one end of a connection line is in another Inserted end of the cylindrical portion of the nozzle housing. A circumferential groove is in an outer peripheral portion formed by an end portion of the lead wire and it is incisively located near the other end of the nozzle housing. The seal is close to the inner peripheral portion of the cylinder portion of the nozzle housing, so as to seal between the outer peripheral portion of the Connection line and the inner peripheral portion of the cylinder portion of the nozzle housing create in a state that the connecting cable around an axis of the cylindrical section of the nozzle housing rotated can be.

Another end of the connecting line is connected to a drive device, such as a motor pump or the like, and to a tank or the like for storing the cleaning liquid. The cleaning liquid fed to the connecting line is passed through the interior of the nozzle housing to the cleaning liquid ness spray nozzle and then sprayed out of the cleaning liquid spray nozzle.

With this headlight cleaning device can the connection line with reference to the cylindrical section of the nozzle housing free rotate like that mentioned above has been. The connecting line is at a middle section in the Axial direction bent so that the axial direction of the other end portion the connection line by rotating the connection line with regard to of the cylindrical portion of the nozzle housing can be changed. Accordingly, the Connection cable can be rotated appropriately to the position and direction of one hose or the like to match that with the other End section of the connecting line is connected, and the connecting line and the hose can just be connected.

As a spray nozzle of the headlight cleaning device described above generally becomes a spray nozzle used, which is structured such that they are received on a vehicle body can or even if it protrudes from the vehicle body, on a Position with an extremely small protrusion length is provided. A main body section the nozzle becomes a predetermined injection position at the time of the injection the cleaning liquid added. That kind of spray nozzle is provided with a cylinder that with a cleaning liquid tank and a motor pump is connected. There is a cylindrical one in the cylinder Piston slidably received. The main body section of the nozzle is on attached to a distal end side of the plunger, with a shut-off valve between the interior of the main body portion of the nozzle and the Interior of the piston is provided when reaching or exceeding of a predetermined value of the internal pressure opens.

When the motor pump is operating becomes the cleaning fluid led to the cylinder and the inner piston section. Since the shut-off valve between the interior of the main body portion of the Nozzle and the interior of the piston is closed until the internal pressure of the Piston reaches or exceeds the predetermined value, the piston becomes from the cylinder due to the increase in the internal pressure of the cylinder outward pressed being the main body section the nozzle is moved to a predetermined injection position. If another Movement of the piston from the predetermined injection position is restricted, elevated the internal pressure in the cylinder and in the piston continues, and the shut-off valve between the interior of the main body of the nozzle and the interior of the piston open, with which the cleaning liquid from the main body section the nozzle is sprayed out.

With this type of spray nozzle is the hose or the like connected to a connecting line connected to a base portion of the cylinder is integrally formed, wherein the spray nozzle on the motor pump and on the tank via the hose or the like connected. Accordingly, if the axial direction the connection line with reference to the axial direction of the cylinder is angled, can correspond to that shown in JP-U No. 6-29960 Connecting cable the direction of the connecting cable by turning of the cylinder changed so that the connecting line and the hose are easy with each other can be connected. Because the structure is such that the cylinder is the piston by sliding the piston in the cylinder with the above mentioned nozzle the piston rotates along its axis when the cylinder rotates, being the height of the main body section the nozzle changed becomes.

As a removal mechanism of dirt adhering to a headlight of a vehicle is moreover a mechanism is known in which a spray nozzle for a cleaning liquid is provided near the headlight, the cleaning liquid on a surface of the Front headlight is applied by the spray nozzle, so to remove the dirt. A relevant example is in the JP-U No. 1-142359. Below is a brief description this spray nozzle shown in JP-U No. 1-142359 (the in JP-U No. 1-142359 is referred to as "washing nozzle").

As in 15 shown in the present specification is a spray nozzle 410 through an upper body 412 and a lower body 414 educated. A section of the upper body 412 is exposed on the outside of the vehicle, with a nozzle body 416 is provided with a spray opening in the exposed portion to the outside of the vehicle. At one end of a connection hole 418 that in the upper body 412 is formed, the spray opening of the nozzle body 416 with the connection hole 418 in connection. The connection hole 418 is on a base portion (a portion not exposed to the outside of the vehicle) of the upper body 412 open.

An end section of the lower body 414 is at the base portion of the upper body 412 attached and another end of the lower body 414 is connected to a hose or the like, and is connected to a motor pump and to a cleaning liquid tank via the hose or the like.

A connection hole 420 that with the connection hole 418 at one end and communicating with the above-mentioned hose or the like at the other end is in the lower body 414 educated. The cleaning liquid passed through the hose or the like is removed from the nozzle body 416 over the connection holes 420 and 418 spouted.

There is also a compression coil spring 422 inside the connection holes 418 and 420 added. A valve ball 424 with a larger diameter than the opening diameter of the other end of the communication hole 420 is between the compression coil spring 422 and the other end of the communication hole 420 arranged. The valve ball 424 is going to the other end side of the connection hole 420 by a pressure force of the compression coil spring 422 pressed. The structure is such that the valve ball 424 the other end of the connection hole 420 constantly closes. The valve ball 424 is towards one end side of the connection hole 420 which moves the other end of the connection hole 420 is opened when the fluid pressure of the cleaning fluid supplied from the hose or the like is the compressive force of the compression coil spring 422 exceeds.

As in 16 shown is in this spray nozzle 410 a plurality of protrusions 426 on an inner outer peripheral portion of the communication hole 420 educated. The tabs 426 Interact with the valve ball 424 so the valve ball 424 is prevented from shaking.

In this case, with this spray nozzle 410 the ledges 426 formed with a size that is a shake of the valve ball 424 can prevent leaving a gap between the valve ball 424 and the connection hole 420 does not occur. As in 16 shown, however, there remains a certain space between the valve ball 424 and the connection hole 420 , and the valve ball 424 can be in a direction perpendicular to the axial direction of the connection hole 420 be transferred. If this displacement of the valve ball 424 in the direction perpendicular to the axial direction of the connection hole 420 is essentially completely limited, moreover, the center of the valve ball 424 from the axis of the connection hole 420 according to the shape of the protrusions 426 or move the like. If in this case the valve ball 424 with the inner wall of the connection hole 420 when closing the other end of the connection hole 420 is in contact, there will be a gap between the valve ball 424 and the other end of the communication hole 420 educated. This may make it impossible for the other end of the connection hole 420 to close completely.

A spray nozzle device is known from WO 97 04 875 known with a cylinder which has a nozzle at one end and sliding into a hollow cylindrical piston from the other end is included, which on its protruding from the cylinder End a connection for has a fluid source, with a sealing ring in a groove the outer peripheral surface on in the cylinder projecting portion of the piston is arranged.

From the DE 41 30 892 A1 Another spray nozzle device is known having a cylinder which has an opening at one end portion and a connecting portion for connection to a fluid source at its other end portion, with a hollow piston which forms a fluid flow passage, the piston having a nozzle at one end has, and its other end is conductively received in the cylinder, and with a sealing ring which is fixedly arranged on an inner circumferential surface of the first end portion of the cylinder. In the piston rod end section facing the nozzle, a valve seat for a ball valve is formed, the inner circumference of which corresponds essentially to the diameter of the ball, a groove being formed in the inner circumferential surface, through which the fluid can get into the nozzle when the ball is in the blocking position was moved until the start of the groove.

From the US 5,242,114 Another spray nozzle device with a piston and a cylinder is known, in which a sealing ring is fixedly arranged on the outer circumferential surface of the piston.

With regard to those described above Aspects, it is an object of the invention to provide a spray nozzle device provide with a leak of the cleaning liquid can be safely prevented.

Another object of the invention is a spray nozzle device to be provided in which a nozzle main body is displaced can be and a connecting section of a connecting line or the like with a hose or the like easily connected can be.

Another object of the invention is to provide a shutoff valve with a connection hole with a valve body can be securely closed.

In order to solve the above problems, a spray nozzle device is provided according to the invention, comprising: a cylinder with a first end section which has a nozzle and a second end section which has an opening; a hollow cylindrical piston which forms a fluid flow passage, the piston engaging and slidingly being received in the cylinder with its one end section through the opening and having a connecting section for connection to a fluid source at its other end, and a sealing ring, which is tightly disposed on an inner peripheral surface of the second end portion of the cylinder to provide a sealing connection with the outer peripheral surface of the piston, the nozzle in a nozzle end portion facing the piston having a fluid flow passage forming hollow valve receiving portion in which a Ball valve is accommodated, the spring-loaded ball of which can be moved in the longitudinal direction of the valve receiving section between the blocking position and a release position in the direction of a blocking position, a guide element in the valve receiving section for limiting the movement of the ball valve in the radial direction, which is essentially perpendicular to the longitudinal direction of the valve receiving section is formed, which has a plurality of projections, which are integrally formed on the inner circumferential surface of the hollow valve receiving section and project substantially radially into the valve receiving section and are arranged at the same distance from one another and extend along the longitudinal direction of the valve receiving section.

Furthermore, according to the invention is a spray nozzle device provided, which comprises: a cylinder with a first end portion, the one opening has, and a second end portion, the connecting portion for the Has connection to a fluid source; a hollow cylindrical piston, which forms a fluid passage, the piston at its one End a nozzle and its other end slidably received in the cylinder is, and a sealing ring which on an inner peripheral surface of the the first end section of the cylinder is arranged stationary, to with an outer peripheral surface of the Piston to create a sealing connection, the nozzle in one a nozzle end section facing the piston a fluid flow passage forming hollow valve receiving portion, in which a Ball valve is added, its towards a locking position spring-loaded ball in the longitudinal direction the valve receiving portion between the locked position and a Release position is movable, limiting the movement of the Ball valve in the radial direction, which is substantially perpendicular to the longitudinal direction of the valve receiving section, a guide element in the valve receiving section is formed, which has a plurality of projections, the on the inner peripheral surface of the hollow valve receiving portion integrally formed and in Essentially spaced radially in protrude the valve receiving portion and along the longitudinal direction of the valve receiving portion. Further, according to the invention, a Spray nozzle device provided which comprises: a cylinder having a first end portion which a nozzle and a second end portion having an opening; and a hollow cylindrical piston having a fluid flow passage forms, the piston having an end in the cylinder is slidably received, and has another end that has a connecting portion for one Has connection to a fluid source, wherein a sealing ring on an inner peripheral surface the second end section of the cylinder is arranged in a fixed manner, to provide a sealing connection with an outer peripheral surface of the Creating pistons.

Furthermore, according to the invention is a shut-off valve provided, which is arranged between a fluid source and a nozzle can be, the shut-off valve comprising: a hollow element, that on the nozzle side of the shut-off valve is provided, the hollow element one Fluid flow passage forms; a ball valve arranged in the hollow member and movable between a locking position and a release position , the one intended to block the fluid flow passage Lock position in the direction of a fluid source side of the shutoff valve and the release position in the direction of the nozzle side from the locked position are provided; and a drive element that is in the hollow element to continuously press the Ball valve is arranged in the blocking position, limiting the movement of the ball valve along a radial direction substantially perpendicular to the locking position and the release position connecting line stands, a guide element is provided in the hollow member, the guide member a plurality of protrusions has on an inner surface of the hollow member are integrally formed and substantially equidistant from each other around the inner circumference of the hollow element are arranged, and each projection radially into the interior of the hollow element protrudes and extends along the longitudinal axis direction of the hollow Elements extends.

In the following the invention will now with reference to the attached Drawing closer explained. In this show:

1 an exploded perspective view of a spray nozzle according to a first embodiment of the invention;

2 a side elevation in cross section of the spray nozzle according to the first embodiment of the invention;

3 a front elevation in cross section of the spray nozzle according to the first embodiment of the invention;

4 a front elevation corresponding to that in 3 Shown cross-sectional view showing a modified embodiment of the spray nozzle according to the first embodiment of the invention;

5 Fig. 3 is an enlarged side elevation in cross section showing a main portion of a check valve according to the first embodiment of the invention;

6 a cross section along the line 6-6 in 5 ;

7 a cross section of a modified embodiment of the shut-off valve according to the first embodiment of the invention;

8th a cross section of a further modified embodiment of the shut-off valve according to the first embodiment of the invention;

9 a side elevation in cross section of a modified embodiment of the spray nozzle;

10 a side elevation in cross section of a further modified embodiment of the spray nozzle;

11 a perspective view of a spray nozzle according to a second embodiment of the invention;

12 a side elevation in cross section of the spray nozzle according to the second embodiment of the invention;

13 a perspective view of a spray nozzle according to a third embodiment of the invention;

14 a side elevation in cross section of the spray nozzle according to the third embodiment of the invention;

15 a side elevation in cross section of a structure of a spray nozzle according to the prior art; and

16 a cross section showing a main portion of the structure of the spray nozzle according to the prior art.

In 1 is an exploded perspective view of a spray nozzle 10 shown according to a first embodiment of the invention, the cross section in 2 is shown. Regarding the frame 18 is in the 1 and 2 the spray nozzle 10 with a frame (carrier) 18 provided by a pair of frame parts 14 and 16 is formed. The frame part 14 of the frame 18 is constructed in such a way that a cross section is curved along its longitudinal direction so as to form an essentially semicircular shape. An essentially semicircular, vertical wall 20 is formed at an end portion in the longitudinal direction. An assembly piece also extends 22 , which is perpendicular to the longitudinal direction of the frame part 15 arranged and is formed substantially in a rectangular plate shape, in the direction of an outer side of the frame part 14 from another end portion in the longitudinal direction of the frame part 14 , One through hole or a plurality of through holes 24 is in the mounting piece 22 formed extending in the thickness direction thereof, and a fastening device such as a bolt or the like extends through the through hole 24 , Which is through the through hole 24 The extending fastening device also extends through a through hole provided in a carrier body, for example near a headlight of a vehicle (these elements are not shown), so as to be fixed and fastened.

The frame part 16 is also with a substantially semicircular cross section corresponding to the frame part 14 trained, and has a vertical wall 26 that at an end portion in the longitudinal direction of the frame part 16 is trained, as well as an assembly piece 28 that is formed at another end portion in the longitudinal direction. Moreover, portions near both end portions are in a width direction (circumference) of the frame part 16 formed with a thickness that is less than the thickness of the other portions of the frame part 16 , A section near an end section of the vertical wall 26 is on one with the curved portion of the frame part 16 not in contact side also formed with a thickness that is less than the thickness of the other portions of the frame part 16 , These thin sections form a step section 30 inside the frame part 16 ,

A thin piece of fit 32 extends from both end portions in a width direction (circumference) of the frame part 14 outward and from an end portion of the vertical wall 20 on one with the curved portion of the frame part 14 not in contact side away. The fitting 32 fits in the step section 30 , If the fitting 32 in the step section 30 is fitted, the frame forms 18 a substantially cylindrical shape, with a cross section perpendicular to the longitudinal direction of each frame part 14 and 16 which are formed in a substantially circular shape. The substantially cylindrical shape has a base at one end in an axial direction of the frame 18 on which the vertical wall 20 and the vertical wall 26 a base section 34 form, the mounting pieces 22 and 28 form an open end. Furthermore, there is at least one substantially semicircular fastening section 36 (the shape of which is obtained by separating a substantially circular ring into two sections) along a longitudinal direction of the frame part 14 on an outer peripheral portion of the frame part 14 educated. At both end portions of the attachment portion 36 are hooks in the circumferential direction 38 in the tangential direction of the fastening section 36 forth, ie according to an opening direction of the frame part 14 ,

On an outer peripheral portion of the frame part 16 is corresponding to the mounting section 36 a substantially semicircular mounting section 40 educated. From both end portions of the attachment portion 40 extend substantially rectangular mounting pieces from the circumferential direction 42 from the frame part 16 path. One in the thickness direction of the mounting piece 42 through-going, rectangular engagement hole 44 (especially in the direction in which the engagement hook 38 protrudes when the frame part 14 on the frame part 16 is set), is in the fastening part 42 educated. The engagement hook 38 extends through the engagement hole 44 if the frame part 14 and the frame part 16 to are joined together, the engagement hook, 38 thereby the movement of the frame part 14 from the frame part 16 limited.

In this case, in the present embodiment, the structure is such that the fixing portions 36 and 40 in the frame parts 14 and 16 are formed (ie the fastening section 36 with the frame part in advance 14 integrally formed and the fastening section 40 with the frame part in advance 16 formed in one piece). The mounting sections 36 and 40 can be separated from the frame parts 14 and 16 be structured. However, if a structure is provided in which the attachment portions 36 and 40 in the frame parts 14 and 16 Advantages can be achieved by not increasing a certain number of parts and moreover a method for fastening the fastening sections 36 and 40 to the frame parts 14 and 16 can be omitted.

Furthermore, there is a pair of water discharge holes 46 and 48 , so-called drainage holes, in the frame part 16 intended. The water discharge hole 46 extends from an inner peripheral portion to the outer peripheral side of the frame member 16 in a central portion in the axial direction (longitudinal direction) of the frame part 16 , The water discharge hole 48 extends from the inner peripheral portion side to the outer peripheral side of the frame member 16 on one side of the vertical wall 26 of the frame part 16 , If the frame 18 is assembled with the vehicle body at a predetermined position, both water discharge holes extend 46 and 48 in a substantially vertical direction.

Furthermore, there is at least one engagement piece 50 on the assembly piece mentioned above 22 intended. A base end portion of the engagement piece 50 is with the mounting piece 22 on a back surface (a surface on the side of the base portion 34 ) of the assembly piece 22 connected. A distal end portion of the engagement piece 50 stands further towards one side of the mounting piece 28 emerges as an end portion of the mounting piece 22 that with the mounting piece 28 is in contact when the frame part 14 on the frame part 16 is set.

According to the engagement piece 50 is an engagement hole 52 in the mounting piece 28 educated. The engagement hole 52 is a rectangular hole that is in the thickness direction of the mounting piece 28 extends therethrough and is structured such that the distal end of the engaging piece 50 into the engagement hole 52 occurs when the frame part 14 with the frame part 16 is put together. An inner peripheral portion of the engaging hole 52 limits displacement of the engagement hook 50 in one direction of the frame part 14 with regard to a movement away from the frame part 16 ,

A movable cylinder 60 is within the frame 18 recorded with the above structure.

The movable cylinder has an outer diameter that is smaller than the inner diameter of the frame 18 and is formed in a cylindrical shape with a base in which an end portion of the movable cylinder 60 which end section is farthest from the base section 34 of the frame 18 is removed as a base section 62 is trained. Corresponding to the movable cylinder are substantially semicircular notch sections 64 and 66 each in the assembly piece 22 and the mounting piece 28 educated. If the frame parts 14 and 16 are composed to form the notch portion 64 and the notch portion 66 a circular hole 68 with an inner diameter that is slightly larger than the outer diameter of the movable cylinder 60 is, the movable cylinder 60 yourself outward from the frame 18 through the circular hole 68 can extend.

As in the 1 and 3 is shown on the outer peripheral portion of the movable cylinder 60 a rib 70 (to prevent rotation) along the axial direction of the movable cylinder 60 educated. According to the rib 70 is a groove 72 (a rotation preventing member) in the notch portion 64 educated. At least when the movable cylinder 60 through the circular hole 68 extends, the rib extends 70 through the groove 72 , Accordingly, rotation of the movable cylinder 60 be limited.

In the case of the present embodiment is a rib 70 and a groove 72 intended. As in 4 shown the ribs 70 however at predetermined angular intervals (according to

4 90 °) to the outer peripheral portion of the movable cylinder 16 be formed, the grooves 72 on inner peripheral portions of the circular hole 68 (ie in notches 64 and 66 ) according to the ribs 70 are trained.

Moreover, as in the 1 and 2 shown a flange 74 on an open end side of the movable cylinder 60 arranged. The flange 74 is formed in a comprehensive ring shape, its outer diameter being larger than the outer diameter of the movable cylinder 60 and slightly smaller than the inside diameter of the frame 18 is. That is, the above-mentioned inner peripheral portion of the circular hole 68 an offset of the movable cylinder 60 in a radial direction (an offset in a direction perpendicular to the axial direction of the movable cylinder 60 ) on the side of the base section 62 limited and the inner peripheral portion of the frame 18 with the flange 74 interacts in such a way that a displacement of the movable cylinder 16 in a radial direction in the frame 18 is too limited. Accordingly, the movements of the movable cylinder 60 in a direction along the opening direction (axial direction tung) of the frame 18 limited.

Furthermore, a cap 76 in the frame 18 on the side of the mounting pieces 22 and 28 added. The cap 76 is provided in a cylindrical shape with a base whose outer diameter is slightly smaller than the inner diameter of the frame 18 and the inside diameter is larger than the outside diameter of the movable cylinder 60 is. An open end of the cap 76 is towards the base section 34 of the frame 18 aligned. A hole that is larger than the outer diameter of the movable cylinder 60 is in a base portion of the cap 76 provided with the movable cylinder passing through the hole.

A compression coil spring 78 is outside the movable cylinder 60 and within the frame 18 arranged. The compression coil spring 78 is structured in such a way that in the case of a cylindrical design, its outer diameter is slightly smaller than the inner diameter of the cap 76 and the inside diameter is larger than the outside diameter of the movable cylinder 60 is. The compression coil spring 78 is inserted so that one end of it is with the base portion of the cap 76 is in contact, so the cap 76 to the mounting pieces 22 and 28 to press, with its other end with the flange 74 is brought into contact such that the latter to the base portion 34 of the frame 18 is pressed. Because the cap 76 with the mounting pieces 22 and 28 is brought into contact such that the cap 76 basically can't move, pushes the compression coil spring 78 the movable cylinder 60 by the pressure force over the flange 74 (ie the movable cylinder 60 ) to the base section 34 ,

As in 2 shown is a circular groove (on the outer circumference) 80 on an inner peripheral portion of the above-mentioned flange 74 provided, an O-ring (sealing ring) 82 which is made of a rubber or an elastic material comparable to a soft synthetic resin material, is arranged on an inner side of the circular groove. A fixed piston 84 is inside the movable cylinder 60 added. The movable cylinder 60 and the attached piston 84 can rotate relatively about a common axis and slide relatively in the axial direction.

Structure of the fixed piston 84 :
As in the 1 and 2 shown is the fixed piston 84 formed in a circular column shape, the diameter of which is slightly smaller than the inside diameter of the movable cylinder 60 is. Accordingly, there is an offset of the movable cylinder 60 in an axial direction through the fixed piston 84 limited.

The o-ring 82 stands with an outer peripheral portion of the fixed piston 84 at its section corresponding to the flange 74 in pressure contact. The o-ring 82 is elastically deformed so as to make pressure contact with a bottom portion of the groove 80 and the outer peripheral portion of the fixed piston 84 to form and adhere close to the latter, whereby the portion between the inner peripheral portion of the movable cylinder 60 and the outer peripheral portion of the fixed piston 84 is sealed.

A circular groove 86 is on the outer peripheral portion of the fixed piston 84 formed on the frame base portion side thereof. Corresponding to a section of the groove 86 is a semicircular notch portion 88 in the vertical wall 20 of the frame part 14 formed, and a semicircular notch portion 90 is in the vertical wall 26 of the frame part 16 educated. These notch sections 88 and 90 form a circular hole in the base portion 34 if the frame part 14 on the frame part 16 is set. The circular hole 92 has an inside diameter that is slightly larger than the outside diameter of the fixed piston 84 on the groove 86 is. The section of the groove 86 of the fixed piston 84 goes through the circular hole 92 therethrough.

Furthermore, there is a circular step section 94 coaxial with the circular hole 92 in the base section 34 of the frame 18 educated. The thickness of the base section 34 on the step section 94 is less than its other sections. An annular seal 96 is on the step section 94 appropriate. The seal 96 is constructed such that its one end surface is near the step portion 94 is attached, and its other end surface near an inner wall of the groove 86 on one side opposite the step section 94 and at a bottom portion of the groove 86 is attached, causing the seal 96 the circular hole 92 seals. In this sealed state, the fixed piston can 84 around the central axis of the circular hole 92 rotate.

Moreover, there is a connection section 98 at an end portion of the fixed piston 84 provided which end portion extends through the circular hole 92 to the outside of the frame 18 extends. The connecting section 98 is in a circular column shape coaxial with the fixed piston 84 provided and has a small outer diameter. A retaining ring 100 whose outer diameter gradually deviates from the fixed piston 84 is reduced, is on the outer peripheral portion of the connecting portion 98 educated.

The retaining ring 100 is structured in such a way that when the connecting section is inserted 98 into a pipe element (not shown), such as a hose, a pipe or the like, the inside diameter of which is essentially the outside diameter of the connecting section 98 corresponds to the retaining ring 100 on an inner order catch section of the tubular element so as to prevent the connecting portion 98 can be removed from the tubular element. The pipe element (not shown) is connected directly or indirectly to a motor pump and a tank which holds the cleaning liquid on one side opposite the connecting section 98 stores (both items not shown). The cleaning fluid inside the tank is applied to the pipe member by operating the motor pump and further to an inner portion of the connecting portion 98 guided. There is also a feed hole 102 in the fixed piston mentioned above 84 intended. The feed hole 102 is constructed such that one end is connected to the inner portion of the connecting portion 98 communicates and the other end at the end portion of the fixed piston 84 open at the base section 62 of the movable cylinder 60 located.

Structure of the nozzle 110 and the shut-off valve 12 :
On an outer side portion of the base portion 62 of the movable cylinder 60 (Pipe element) is a nozzle 110 provided according to a nozzle main body, such as that in the 1 and 2 is shown. The nozzle 110 has an essentially hemispherical shape, with a spray opening 112 is provided in part of its outer circumference. A the shut-off valve 12 forming body 114 is in the nozzle 110 intended.

As in the 2 and 5 shown is the body 114 formed in a substantially circular columnar shape with an outer diameter that is less than the outer diameter of the movable cylinder 60 is. Inside the body 114 is a valve receiving portion 116 intended.

As in 5 shown is the valve receiving portion 116 a hole with a base, which hole at an axial end portion of the body 114 on its opposite side to a main body portion (the substantially hemispherical portion) of the nozzle 110 opens. The valve receiving section 116 is substantially coaxial with the outer peripheral portion of the body 114 , being a ball valve 118 is included as a valve body. The ball valve 118 has a spherical shape in the outer circumference, the outer diameter of which is considerably smaller than the inner diameter of the valve receiving section 116 is.

In addition, there are a plurality of projections (guide elements) 120 towards the axial center of the valve receiving portion 116 from an inner peripheral portion of the valve receiving portion 116 out. Every head start 120 is in an elongated rod shape or a plate shape along the axial direction of the valve receiving portion 116 educated. The tabs 120 are at predetermined intervals around the inner periphery of the valve accommodating portion 116 educated. A diameter of one through the distal end of each protrusion 120 (whose end portions on a valve receiving portion 116 axial center) passing imaginary circle is slightly larger than the outer diameter of the ball valve mentioned above 118 , The ball valve 118 is in the valve receiving section 116 recorded such that it is along the axial direction of the valve receiving portion 116 can be moved, whereas a displacement in a direction perpendicular to the axial direction of the valve receiving portion 116 through the distal ends of the protrusions 120 is limited.

In this case, there is a plurality of protrusions 120 at predetermined intervals over the inner circumference of the valve receiving portion 116 is formed as mentioned above, a space between adjacent projections 120 provided that are adjacent to the inner periphery of the valve receiving portion 116 are arranged. The space forms a flow path 122 for the cleaning liquid, the cleaning liquid mentioned above flowing through here.

Furthermore, a spring retainer 124 on each of the ledges 120 provided for a continuous transition with a bottom surface side of the valve receiving portion 16 to build. The spring retainer 124 is a rod-shaped portion or a plate-shaped portion that is formed to extend from the inner peripheral portion of the valve receiving portion 116 in the direction of the axis of the valve receiving portion 116 in substantially the same manner as the protrusions 120 extends or protrudes. The amount of protrusion of the spring retainer 124 from the inner peripheral portion of the valve receiving portion 116 is larger than the amount of the protruding portion 120 , One through the distal end portions of the spring retainers 124 the imaginary circle therethrough is substantially coaxial with the valve receiving portion 116 , the diameter of the imaginary circle being smaller than the outer diameter of the ball valve 118 becomes. Accordingly, the ball valve 118 basically not from one side of the protrusions 120 to one side of the spring retainers 124 be moved.

The description of the spring retainers given herein 124 is based on the protrusions 120 and the spring retainers 124 are provided as separate parts. However, the description of these elements as separate parts is given in terms of functional convenience. The spring retainer 124 and the lead 120 can of course be designed as separate parts. As in 5 shown, however, a structure may be provided in which the degree of protrusion of the protrusion 120 from the inner peripheral portion of the valve receiving portion 116 is larger than a part thereof (a portion on the base portion side of the valve accommodating portion 116 ).

As in 5 is also shown a compression coil spring (drive element) 126 inside the valve receiving section 116 added. The compression coil spring 126 is constructed in such a way that in the case of a circular column shape, its inside diameter is significantly smaller than the outside diameter of the ball valve 118 and their outer diameter is slightly less than the diameter of the aforementioned imaginary circle passing through the distal end portions of the spring retainers 124 goes through.

The compression coil spring 126 is between the ball valve 118 and the base portion of the valve receiving portion 116 arranged. One end of the compression coil spring 126 is with the ball valve 118 in contact with its other end in the valve receiving portion 116 on the side of the spring retainer 124 is inserted so as to be connected to the base portion of the valve receiving portion 116 come into contact, causing the ball valve 118 toward an open end side of the valve receiving portion 116 is pressed. As mentioned above, there is an offset of the compression coil spring 126 in a radial direction of the valve receiving portion 116 on the spring retainers 124 through the distal end portions of the spring retainers 124 limited because the outer diameter of the compression coil spring 126 in the case of a circular columnar shape of the compression coil spring 126 is slightly less than the diameter of the imaginary circle passing through the distal end portions of the spring retainers 124 goes through.

Furthermore is inside the body 114 a flow passage 128 for a cleaning liquid coaxial with an outer peripheral portion of the body 114 intended. The flow passage 128 to flow through the cleaning liquid is substantially coaxial with the valve receiving portion 116 the inside diameter of which is less than the diameter of the imaginary circle defined by the distal end portions of the spring retainers 124 goes through. Another end portion of the flow passage 128 for the cleaning liquid on the main body portion of the nozzle 110 is bent, so with the spray opening 112 to be connected.

There is also a circular groove 130 in the outer peripheral portion of the body 114 formed, wherein an annular O-ring formed from rubber or from an elastic material comparable to a soft, synthetic resin material 132 in the groove 130 is fitted.

On the movable cylinder 60 is a cylindrical body 134 according to the body 114 intended. The cylindrical body 134 is coaxial with the movable cylinder 60 formed and corresponds to a cylindrical portion (a receiving portion) with a base that the base portion 62 of the movable cylinder 60 is. The inside diameter of the cylindrical body 134 is slightly larger than the outside diameter of the body 114 , and the body 114 can be fitted and into the cylindrical body 134 be used. Furthermore, there is a through hole 136 (a bore allowing fluid to flow therethrough) at a substantially central portion of the base portion 62 of the movable cylinder 60 formed and it extends through the base portion 62 in its thickness direction. As a result, the inner portion of the cylindrical body stands 134 and the inner portion of the movable cylinder 60 in connection with each other. If so the body 114 in the cylindrical body 134 is used, the inner portions of the movable cylinder 60 and the valve receiving section 116 with each other through the through hole 136 communicate, the through hole 136 and the ball valve 118 along the axial direction of the inner portion of the cylindrical body 134 and the body 114 opposite (ie that the center of the ball valve 118 essentially on an imaginary extension of the axis of the through hole 136 is arranged). Moreover, when the body 114 in the cylindrical body 134 is fitted, the O-ring 132 due to the from the bottom portion of the groove 130 and the inner peripheral portion of the cylindrical body 134 applied compressive force is elastically deformed and is near the bottom portion of the groove 130 and the inner peripheral portion of the cylindrical body 134 attached so as to provide a seal between the outer peripheral portion of the body 114 and the inner peripheral portion of the cylindrical body 134 provided.

Furthermore, a seal is made of rubber or an elastic material comparable to a soft synthetic resin material 138 in the cylindrical body 134 arranged. The seal 138 is an annular element with a hole, the inside diameter of which is significantly smaller than the outside diameter of the ball valve 118 and is coaxial with the through hole 136 arranged. The seal 138 is structured in such a way that its outer diameter is slightly smaller than the inner diameter of the cylindrical body 134 and significantly larger than the inside diameter of the valve receiving portion 116 is. Accordingly, when the body 114 inserted and in the cylindrical body 134 the seal has been fitted 138 between the base section 62 and an end face of the body 114 held in the axial direction. At least the end face of the body 114 corresponding sealing section is close to the base section 62 on one side of the base section 62 attached and near the end face of the body 114 on a body 114 -Side attached.

A pair of nozzle hooks 140 is at an edge portion of an opening of the cylindrical body 134 provided so that they face each other in a diametrical direction of the cylindrical body 134 are facing each other. Each of the nozzle holding hooks 140 is with a base section 142 provided, which is formed thinner than the cylindrical body 134 , The base section 142 is structured such that one end has an open edge of the cylindrical body 134 on a diametrical outer portion of the opening edge of the cylindrical body 134 connected is. As in 5 is thus shown the distance between the pair of base sections 142 larger than the inside diameter of the cylindrical body 134 , a step portion along the diametrical direction of the cylindrical body 134 through the base section 142 and the inner peripheral portion of the cylindrical body 134 is formed.

At the other end of each base section 142 is a catch 144 intended. The hook 144 is made thicker than the base section 142 on a section of the hook 144 that with the base section 142 connected is. At this section is the distance between the pair of hooks 144 smaller than the section between the pair of base sections 142 , In this case the hook 144 gradually thinner towards its distal end and one end face of the hook 144 on the radial inside of the cylindrical body 134 forms an inclined surface 146 that have an opening direction of the cylinder body 134 is inclined.

An annular retaining ring 148 is integral with the outer peripheral portion of the body 114 according to the nozzle holding hook 140 formed with the structure described above. The retaining ring 148 is structured such that its axial size is slightly less than the distance between the opening edge of the cylindrical body 134 and the hook 144 (ie a length of the base section 142 along the axial direction of the cylindrical body 134 ). If the end face of the body 114 close to the seal 138 is attached, a portion of the ring 148 into a section between the opening edge of the cylindrical body 134 and the hook 144 used to the base section 142 to be facing in the diametrical direction of the body.

In this case of the present embodiment, the main body portion (the substantially hemispherical portion) of the above-mentioned nozzle 110 and the body 114 formed in a substantially one-piece manner. However, a structure may also be provided in which, for example, the main body portion of the nozzle 110 and the body 114 constructed separately and later integrally connected. As such an embodiment, an externally threaded portion may be in either the main body portion of the nozzle 110 or the body 114 may be provided, and an internally threaded portion may be provided in the corresponding part. The nozzle 110 can then be assembled by screwing the external thread into the internal thread. In the case of a separate structuring of the main body section of the nozzle 110 and the body 114 there is a disadvantage in the assembly process and increased work performance. For example, if different types of nozzles 110 with the position of the spray opening 112 be prepared and the position of the spray nozzle 10 varies in different vehicle designs according to the position of the headlights, even with different types of vehicle, parts other than the nozzle may be used 110 generally used. When preparing different types of nozzles 110 with different spraying aspects of the cleaning liquid from the spray opening 112 dispensed, there is an advantage in that it is suitably possible to use the nozzle 110 to replace and to maintain a spray aspect optimized for the environment when using a vehicle.

The following is a description of the operations and results of the present embodiment both with regard to the device (production) of the present spray nozzle 10 as well as given how they work.

Spray nozzle assembly procedure 10 :
When assembling the spray nozzle 10 When the piston is assembled into the cylinder, it becomes the fixed piston 84 from the open end of the movable cylinder 60 used and fitted. In the process of attaching the spring, the cap is made before or after the piston is assembled with the cylinder 76 and the compression coil spring 78 on the other side of the movable cylinder 60 attached. When the spring mounting process and assembly of the piston with the cylinder are completed, one end of the compression coil spring 78 with the inner base of the cap 76 contacted and the other end of the compression coil spring 78 comes with the flange 74 of the fixed piston 84 brought into contact.

In the nozzle attachment method, the body is made before or after the piston is assembled with the cylinder and the spring attachment method mentioned above 114 the nozzle 110 in the cylindrical body 134 used and fitted. While fitting and inserting the body 114 in the cylindrical body 134 becomes the body 114 along its axis closer to the cylindrical body 134 moves, the cylindrical body 134 and the body 114 are essentially coaxial with each other, which means the body 114 in the cylindrical body 134 is used. If the body 114 with a predetermined distance in the cylindrical body 134 has been used in the body 114 trained retaining ring 148 with the inclined surface 146 of the hook 144 brought into contact. Because the inclined surface 146 in a direction along the opening direction of the cylindrical body 134 with respect to the radial inside of the cylindrical body 134 is inclined, the Ha ken 144 the force in the direction along the axis of the body 114 and the cylindrical body 134 from the retaining ring 148 on and is elastically deformed so as to rotate around a portion which is the cylindrical body 134 with the base section 142 connects, and it becomes from the axis of the body 114 and the cylindrical body 134 moved away. If from this state the body 114 further into the cylindrical body 134 is used, the hook 144 over the outer peripheral surface of the retaining ring 148 led, after which the hook 144 on the section side of the nozzle main body above the retaining ring 148 is arranged. As a result, the nozzle holding hook 140 in its original shape due to the elasticity of the base section 142 recycled. In this returned state, there is a base portion 62 side end surface of the hook 144 and a nozzle 110 main body portion side end face of the retaining ring 148 along the axial direction of the body 114 and the cylindrical body 134 towards each other. Accordingly stands in this state when the body 114 starts from the cylindrical body 134 step out, the hook 144 with the retaining ring 148 interacting, removing the body 114 from the cylindrical body 134 is limited. Accordingly, the cylindrical body 134 and the body 114 integrally connected.

After completing the assembling process of the piston with the cylinder and the spring fastening process, the movable cylinder further becomes 60 and the fixed piston 84 within the frame 18 recorded in a piston-cylinder recording process.

In this piston-cylinder mounting process, the movable cylinder 60 in one of the frame parts 14 or 16 recorded that are in a separate state. Now the outer base section of the cap 76 with the mounting piece 22 or the mounting piece 28 brought into contact, depending on which frame part 14 or 16 the movable cylinder 60 is included. While picking up the movable cylinder 60 in one of the frame parts 14 or 16 also becomes the groove 86 of the fixed piston in the notch portion 88 or the notch portion 90 fitted, depending on the frame part 14 or 16 the movable cylinder 60 is included.

Below will be the frame part 14 and the frame part 16 with the substantially semicircular openings corresponding to the mutually opposite cross sections moved towards each other. If the frame part 14 the frame part 16 is approached at a predetermined distance, the fitting piece 32 of the frame part 14 in the step section 30 the frame part 16 fitted. In the meantime, the holding hook extends 38 of the fastening section 36 through the engagement hole 44 of the mounting piece 42 , In this state, which extends through the engaging hole, is a frame part 14 main body portion side end surface of the holding hook 38 an end face of the fastener 42 facing. At the start of moving the frame part away 14 from the frame part 16 the end face of the retaining hook 38 and the mounting piece 28 interacting with each other. Accordingly, between the frame part 14 and the frame part 16 a mechanical connection can be obtained.

Moreover, at the time of fitting the fitting 32 of the frame part 14 in the step section 30 of the frame part 16 the holding hook 50 of the assembly piece 22 about the mounting piece 28 guided and thus deformed elastically. When merging the fitting 32 with the step section 30 face the engaging hole 52 and the engagement hook 50 along the axial direction of the frame 18 opposite, the engagement hook 50 into the engagement hole 32 intervenes when it returns to its original state due to its elasticity. In this state, there is a mounting piece 22 side end surface of the engagement hook 50 and an inner peripheral portion of the engaging hole 52 interacting with each other when the frame part 14 from the frame part 16 is moved away.

After going through each of the above-mentioned processes, the present spray nozzle is 10 structured in such a way that the aforementioned tubular element connects to the connecting section 98 can be connected so as to connect the motor pump and the tank, and the mounting pieces 22 and 28 can be attached to the vehicle body.

As mentioned above, the connection is made during the assembly of the spray nozzle 10 assemblable elements by the attachment between the retaining ring 148 and the hook 144 , the attachment between the fitting 32 and the step section 30 , the fastening between the holding piece 38 and the engaging hole 44 , the attachment between the retaining hook 50 and the engaging hole 52 and the like. This connection can be carried out in an enormously simple manner without the use of fastening devices, such as, for example, a screw, a screw bolt or the like, or an adhesive material or the like. It is therefore possible to use the spray nozzle 10 easy to assemble without any assembly expertise. Accordingly, since the assembly process and no additional elements and no special devices for assembling or fastening are required, the assembly costs and, moreover, the production costs of the spray nozzle are possible 10 to reduce.

The following is a description of the working methods and results regarding the working methods of the spray nozzle 10 and the shut-off valve 12 given.

If that's on the side of the cleaning liquid provided motor pump for sucking the cleaning liquid from the tank is in operation, the cleaning liquid is guided with a fluid pressure corresponding to the discharge pressure of the motor pump to the pipe element, which is a hose, a pipe or the like. The cleaning liquid flows through the pipe element and through the inner portion of the fixed piston 84 , ie through the feed hole 102 so as to attach to the inner portion of the movable cylinder 60 to be led.

On an outer portion (ie on the side of the cylindrical body 134 ) of the through hole 136 in the movable cylinder 60 there is the ball valve 118 due to the driving force of the compression coil spring 126 in pressure contact with the hole of the seal 138 , the hole of the seal 138 is closed. Because the seal 138 close to the body 114 and the base section 62 is attached and the hole of the seal 138 with the through hole 136 communicates is the through hole 136 through the ball valve 118 locked.

The attached to the inner portion of the movable cylinder 60 guided cleaning fluid flows through the through hole 136 of the base section 62 such that it passes through the outer portion of the movable cylinder 60 flows outwards. Because the through hole 136 as mentioned above through the ball valve 118 is closed, however, the cleaning liquid cannot flow out of the outer portion of the movable cylinder. In this state, the internal pressure in the inner portion of the movable cylinder increases 60 such that the fixed piston 84 from the open end of the movable cylinder 60 is pushed outwards because the cleaning liquid is continuously on the movable cylinder 60 to be led. Because the fixed piston 84 with the circular hole 92 of the frame 18 is engaged, the fixed piston 84 basically not to be moved. Accordingly, the fluid pressure of the cleaning liquid in the inner portion of the movable cylinder increases 60 , causing the movable cylinder 60 moved along its axial direction in that direction so that the base portion 62 from the fixed piston 84 is moved away, namely against the driving force of the compression coil spring 78 , Therefore the movable cylinder stands 60 from the frame 18 out.

At this moment, the cleaning liquid flows through a portion between the inner peripheral portion of the movable cylinder 60 and the outer peripheral portion of the fixed piston 84 such that it extends from the open end of the movable cylinder 60 exit. Because the O-ring 82 between the inner peripheral portion of the movable cylinder 60 and the outer peripheral portion of the fixed piston 84 on the open end side of the movable cylinder 60 creates a seal, however, the cleaning fluid generally does not exit the open end of the movable cylinder 60 out.

If the internal pressure of the movable cylinder 60 increases, the movable cylinder also becomes 60 elastically deformed so that the inside diameter of the movable cylinder 60 at the middle section of the movable cylinder 60 enlarged in its axial direction. The O-ring mentioned above 82 however, is at the opening end of the movable cylinder 60 provided on which the inner diameter is not expanded or has only expanded slightly. Moreover, the flange 74 at the open end of the movable cylinder 60 formed, the thickness of the open end of the movable cylinder 60 there is larger than other sections, and its strength is greater. Accordingly, it is possible that the fastening force of the O-ring 82 is reduced and it is possible to maintain a sealing state.

If in this state the movable cylinder 60 constantly out of frame 18 protrudes, the flange 74 of the movable cylinder with the open end of the cap 76 brought into contact, causing the movement of the movable cylinder 60 is limited in the protruding direction. If starting from this condition, the cleaning liquid continues continuously into the movable cylinder 60 is conveyed, the internal pressure of the movable cylinder increases 60 about the driving force of the compression coil spring 126 and the cleaning fluid pushes the ball valve 118 against the driving force of the compression coil spring 126 so the ball valve 118 from the seal 138 to move away. Consequently, the through hole 136 opened, bringing the cleaning fluid through the through hole 136 in the valve receiving section 116 flows and through the cleaning liquid flow passage 128 and towards the headlight from the spray opening 112 the nozzle 110 is sprayed out.

Here, cases can arise in which the movable cylinder 60 due to the fluid pressure of the cleaning liquid or an externally applied force, begins to rotate about its own axis when the movable cylinder 60 slides or another external force is applied. If the movable cylinder 60 rotates, the spraying direction of the cleaning liquid would change and it would be impossible to spray the cleaning liquid onto the headlight. Since according to the present embodiment, the rib 70 on the outer peripheral portion of the movable cylinder 60 in the groove 72 is a rotational movement of the movable cylinder 60 however limited. Accordingly, in the present embodiment, it is possible to reliably spray the cleaning liquid onto the headlamp.

Since, according to the present embodiment, displacement of the ball valve 118 in the direction perpendicular to the axial direction of the valve acceptance portion 116 through the plurality of protrusions 120 is limited, the direction of movement of the ball valve 118 due to the fluid pressure of the cleaning liquid, the axial direction of the valve receiving portion 116 , that is, the axial direction of the through hole 136 and the hole of the seal 138 , When the fluid pressure of the cleaning fluid is under the driving force of the compression coil spring 126 decreases, the ball valve becomes accordingly due to a stop of the motor pump or the like 118 towards the hole of the seal 138 coaxially along the axial direction of the through hole 136 by the driving force of the compression coil spring 126 moved so the hole of the seal 138 close. There, as mentioned above, the ball valve 118 with the seal 138 when the axis of the hole of the seal substantially coincides 138 and the through hole 136 with the center of the ball valve 118 is in pressure contact, there is no space between the hole of the seal 138 and the ball valve 118 formed, making it possible to seal the hole 138 and the through hole 136 with the ball valve 118 lock securely.

Moreover, as mentioned above, the displacement of the ball valve 118 through the ledges 120 limited, ie the flow passage 122 the cleaning liquid is between the respective projections 120 along the inner circumference of the valve receiving portion 116 formed, and the cleaning liquid can flow laminar.

Because one end of the compression coil spring 126 is structured such that its displacement along the radial direction of the valve receiving portion 116 through the spring retainers 124 is limited, the direction of force of the spring is actually not changed. Accordingly, the compression coil spring 126 the ball valve 118 with respect to the through hole 136 and the hole of the seal 138 move coaxially so that it is possible to seal the hole 138 and the through hole 136 with the ball valve 118 to close reliably.

A description will now be given of operations and results of the present embodiment which are different from those in the assembly and the above-mentioned operation. As is mentioned above, the spray nozzle 10 attached to the vehicle body. Regarding the function of spraying the cleaning liquid on the headlight, it is necessary to expose the nozzle to the outside, and of course the inner portion of the frame stands 18 in communication with the outer portion of the vehicle. Accordingly, it is possible for rain water or the like to come over the circular hole 68 in the frame 18 can penetrate. If rainwater or the like in the frame 18 occurs and, moreover, the penetrated rainwater cools, as is the case, for example, in winter or at cold temperatures, so that ice forms, are the outer peripheral portion of the movable cylinder 60 and the inner peripheral portion of the frame 18 mechanically connected to each other so that it becomes impossible for the movable cylinder 60 glides easily.

According to the present embodiment, this is through the circular hole 78 entering rainwater or the like due to the water discharge holes 46 and 48 that in the frame part 16 are formed through the water discharge holes 46 outward from the frame 18 discharged and the rain water or the like that through the water discharge hole 46 streams and the vertical wall 26 is reached through the water discharge hole 48 outside of the frame 18 issued. Accordingly, the present spray nozzle 10 the rainwater or the like is not within the frame 18 held, making it possible for the movable cylinder 69 glides easily even in winter months and at cold temperatures.

Because the fixed piston 84 in the frame 18 in addition, according to the present invention, foreign matter such as rain water, dirt, or the like does not tend to the fixed piston 84 to adhere, moreover, the possibility of adhesion of foreign material, such as rainwater, dirt or the like to the fixed piston 84 is further reduced since the fixed piston 84 even then in the movable cylinder 60 is recorded when it is not in operation. If the movable cylinder 60 slides in a state where foreign matter such as rain water, dirt, or the like on the outer peripheral portion of the fixed piston 84 adheres, there is a possibility that the outer peripheral portion of the fixed piston 84 and the inner peripheral portion of the movable cylinder 60 can be damaged, thus damaging the O-ring. According to the present embodiment, however, such problems do not arise because the possibility of foreign matter such as rain water, dirt or the like sticking to the fixed piston 84 is extremely low.

Modified Embodiments of the Present Embodiment:
Modified embodiment with respect to the projection 120 :
In this case, according to the present embodiment, as in 6 shown the structure to be such that four protrusions 120 at 90 ° intervals around the axis of the valve receiving portion 116 are provided. As in 7 shown, however, the structure can be such that three protrusions 120 at intervals of 120 around the axis of the valve receiving portion 116 are provided. Ie that if the ball valve 118 simply with these projections 120 is brought in contact is a transfer of the Ku gelventils 118 limited. Hence the ball valve 118 with three at a distance of 120 trained projections 120 at three points through these three ledges 120 supports, which makes it possible to move the ball valve 118 sure limit.

As in 8th shown, the structure can be such that projections 162 on the inner peripheral portion of the valve receiving portion 116 instead of the tabs 120 are provided. The tabs 162 differ from the ledges 120 , with only two protrusions 162 at intervals of 180 are provided. A deepening section 164 that opens toward the valve receiving portion 116 axis side is at a distal end portion of each projection 164 trained, the ball valve 118 partially in each well section 164 is used. Accordingly, the distance between one of the protrusions 162 and another of the ledges 162 smaller than the outside diameter of the ball valve 118 on both circumferential direction end sides of the recess portion 164 , Consequently, holding the ball valve 118 through the pair of protrusions 162 not fail. Therefore, according to the structure mentioned above, it is possible to displace the ball valve 118 sure to limit, although only two tabs 162 are provided.

Modified embodiment with regard to the connecting section 98 :
According to the present embodiment, the structure can be provided such that the connecting section 98 in a cylindrical shape coaxial with the fixed piston 84 is trained. As in the 9 and 10 shown, however, for example, the structure can be such that the axial direction of the connecting portion 98 inclined or with respect to the axial direction of the fixed piston 84 perpendicular to this.

In the case of using this structure, the axial direction of a tubular element inserting portion is the connecting portion 98 with respect to the axial direction of the fixed piston 84 inclined. That is, in some arrangements, the annular element is not always coaxial with the axial direction of the fixed piston 84 is arranged. Accordingly, it can be in a structure in which the connection portion 98 with the fixed piston 84 axially provided, the axial direction of the tubular element must be in a coaxial arrangement with the fixed piston 84 to force. As a result, there is a possibility that the device will pose problems and that the tubular member will be bent after assembly.

In turn, it is possible with a structure in which the axial direction of the connecting portion 98 with respect to the axial direction of the fixed piston 84 is inclined, the tubular element with the connecting portion 98 without assembling bending forces, which makes it possible to prevent the pipe element from bending, or to bend the pipe element to a very small extent. At the time of connecting the pipe member to the connection section 98 it is also possible to change the direction of the connecting section 98 by a suitable rotation of the fixed piston 84 to change its axis. By aligning the connection section 98 in the direction from which the tubular element is most easily connected to the connecting section 98 can be connected and the pipe element is only bent to a very small extent after the connection, further device properties are improved and the degree of bending of the pipe element is reduced.

Now the in 9 shown structure described. In this embodiment, the parts different from the structure of the above embodiment are described in particular in detail.

The structure of this modified embodiment is that of a single dash-dotted line A in 9 Shown axis of the connecting section 98 with an angle θ1 with respect to the axis of the fixed piston 84 inclined, which is shown by a single dash-dotted line B. The angle θ1 is more than 0 ° and less than 90 °. If the fixed piston 84 rotates about its axis becomes a distal end portion of the connecting portion 98 around the axis of the fixed piston 84 by an amount of rotation of the fixed piston 84 offset and the direction of the axis of the connecting section 98 is changed. Accordingly, it is possible to connect the connecting portion 98 by a suitable rotation of the connecting section 98 around the axis of the fixed piston 84 until reaching a position corresponding to an axial direction of an end portion of the tubular element 104 to the pipe element 104 easy to connect, for example as in 9 shown, from a state shown by a solid line to a state shown by a two-dot line or the like. Because the axial direction of the connecting section 98 in this state, the axial direction of the end portion of the tubular member 104 corresponds, it is possible to have a bend, a twist, an unnatural curvature or the like during connection and after connection of the tubular element 104 to prevent. As a result, it is possible to damage or the like of the tubular member 104 to prevent. In cases where there is a bend, twist or an unnatural curvature in the tubular element 104 occurs, there is a possibility that an inner portion of the tubular member 104 becomes very narrow. In this state, a problem-free flow of the cleaning liquid and the pipe element are impossible 104 can be due to the fluid pressure of the cleaning liquid from the connecting portion 98 peel off, or a crack, Breakage or the like can occur in the tubular element 104 caused. As mentioned above, according to the present embodiment, it is possible to always provide an even flow of the cleaning liquid and detachment of the pipe member 104 from the connection section 98 , as well as a demolition, breakage or the like due to the fluid pressure of the cleaning liquid in the pipe element, because when connecting the pipe element 104 with the connecting section 98 no bending, twisting or unnatural curvature or the like of the tubular element 104 is produced.

Because the axis of the connecting section 98 according to the axial direction of the tubular element 104 by suitable rotation of the fixed piston 84 is aligned, it is possible to use different pipe elements 104 to use, in which arrangement positions and axial directions of the end sections are different. Ie that with the present spray nozzle 10 the constituent elements can generally be used in many types of vehicles, making it possible to reduce enormous costs.

As in 10 shown, it is possible to set the inclination angle θ1 to 90 °. It is also possible to set the angle of inclination θ1 to an angle above 90 °.

In this case, the pipe element 104 on the cleaning liquid tank or the motor pump for direct supply of the cleaning liquid or for indirect supply via other connecting elements on the side of the pipe element 104 connected. Connecting the pipe element 104 (ie a connection method between the pipe element 104 and the tank or the motor or other connection elements) can both before and after a connection of the tubular element 104 for connection between the connection section 98 and the tubular element 104 respectively.

Another embodiment follows according to the invention described. In this case, the following descriptions any embodiment uses the same reference numerals and assigns those elements that essentially the same elements of the previously described embodiments including the Embodiment described above correspond, a description of these elements being omitted becomes.

11 Fig. 3 is a perspective view showing a structure of a spray nozzle 200 according to a second embodiment of the invention, and 12 is a cross section of the structure of the spray nozzle 200 , As shown in these figures, the spray nozzle is 200 with a fixed cylinder 202 (a cylindrical cylinder). As in 12 shown, the fixed cylinder 202 a continuous cylindrical shape with a base. A connecting section 206 with the same structure as the connecting section 98 the first embodiment is on the outside of the base portion 204 of the fixed cylinder 202 provided, an internal and external section with each other via a connecting section 206 on the base portion 204 side of the fixed cylinder 202 are connected.

On an opening end side of the fixed cylinder 202 is a flange section 208 educated. The thickness of the fixed cylinder 202 is on the section on which the flange section 208 is formed larger than other portions of the cylinder. A pair of mounting pieces also extend 210 and 212 from an outer peripheral portion of the flange portion 208 outward. The mounting pieces 210 and 212 are each as plate-shaped sections with a thickness direction along an axial direction of the fixed cylinder 202 formed and extend in opposite directions with respect to the flange portion 208 and a main body portion of the fixed cylinder 202 outward. In the assembly pieces 210 and 212 are through holes 214 and 216 trained, which is in the thickness direction of the respective mounting piece 210 and 212 extend through. Fasteners, such as bolts or the like, extend through the through holes 214 , That through the through holes 214 extending fasteners also extend through through holes formed, for example, in a support body provided near the headlight of the vehicle (not shown).

There is also a movable piston 220 in the fixed cylinder 202 recorded such that it is along the axial direction of the fixed cylinder 202 can slide freely. In the movable piston 220 is a feed hole 222 provided by the movable piston 220 extends along its axis. The movable piston 220 has an essentially cylindrical shape. On a distal end side of the movable plunger 220 (ie, on an end portion side of the movable piston 220 at its opposite end from the base section 204 of the fixed cylinder 202 ) are a housing 134 and a pair of nozzle holding hooks 140 intended. The housing 134 and the pair of nozzle holding hooks 140 are not in the movable cylinder 60 but in the movable piston 220 intended. Here is a difference from the case 134 and the pair of nozzle holding hooks 140 according to the first embodiment. However, since the same structures for the housing 134 and the pair of nozzle holding hooks 140 detailed description is omitted.

The body 114 the nozzle 110 is done in the same way as that for the case above 134 has been described on the housing 134 ge sets, the inside of the body 114 with the feed hole 222 of the substantially coaxially arranged movable piston 220 communicates.

On an outer peripheral portion of the movable piston 220 on the side where the nozzle holding hooks 140 and the housing 134 are provided are a pair of axle support pieces 224 and 226 intended. The axle support pieces 224 and 226 are each as plate-shaped portions in a thickness direction along an axial direction of the movable piston 220 formed and extend in opposite directions with respect to the main portion of the movable piston 220 outward. An axle bracket hole 228 is in the axle support piece 224 formed which extends along the axial direction of the fixed cylinder 202 and the movable piston 220 extends through. An axial direction end portion of an axis 230 extends through the axle bracket hole 228 , At one axial direction end portion of the axle 230 an external thread is provided, one of the nuts 232 with a larger outer diameter than the diameter of the axle support hole 228 with an internal thread. The nut 232 is with the axle support piece 242 on the side of the axle support piece 242 brought into contact on an opposite side on which another axial direction end portion of the axis 230 is arranged. Hence there is an offset of the axis 230 limited in the direction of the other axial direction end side.

In the axle support piece 226 is an axle bracket hole 234 formed, which extends here along the axial direction of the fixed cylinder 202 and the movable piston 220 extends. An axial direction end portion of an axis 236 extends through the axle bracket hole 234 , At one axial direction end portion of the axle 236 is an external thread, with another one of the nuts 232 with a larger outer diameter than the diameter of the axle support hole 234 is applied to the screw thread. The nut 232 is with the axle support piece 226 on one side of the axle support piece 224 opposite one side on which another axial direction end portion of the axis 236 is arranged, brought into contact. Hence there is an offset of the axis 236 limited in the direction of the other axial direction end side.

Moreover, the axle bracket hole 228 with one of the through holes 216 aligned coaxially, with the axle support hole 234 with the other of the through holes 216 is coaxially aligned. The respective axes 230 and 236 are through the corresponding through holes 216 inserted through and extending on opposite sides of the flange portion 208 , which is opposite the side on which the axle support pieces 224 and 226 are provided.

On the base section 204 side of the fixed cylinder 202 is relative to the flange section 208 a guide ring 238 intended. The guide ring 238 is a ring element with an inner diameter that is only slightly larger than the outer diameter of the fixed cylinder and that over the fixed cylinder 202 can slide freely in its axial direction. The axle support pieces 240 and 242 extend in radial directions from the guide ring 238 outward. In the axle support piece 240 is an axle bracket hole 244 formed which extends along the axial direction of the fixed cylinder 202 and the movable piston 220 extends through. The other axial direction end portion of the axis 236 extends through the axle bracket hole 244 , A head section 246 with an outer diameter that is larger than the diameter of the axle support hole 244 is at the other axial direction end portion of the axis 236 educated. The head section 246 with the corresponding axle support piece 240 over the axle support piece 240 in an opposite side to an end portion in an axial direction of the axis 230 brought into contact, with which an offset of the axis 236 is limited in one side of another end in the axial direction.

Moreover, it is along an axial direction of the fixed cylinder 202 and the movable piston 220 axle carrier hole extending through it 248 in the axle support piece 242 formed with another end side in the axial direction of the axis 236 extends through here. The one with a larger outer diameter than the diameter of the axle support hole 248 provided head section 246 is at another end portion in the axial direction of the axis 230 and the axis 236 educated. The head sections 246 with the axle support pieces 240 and 242 on one side of the axle support pieces 240 and 242 brought into contact against the side on which the one axial direction end portions of the axis 230 and the axis 236 are arranged. Accordingly, the axis is offset 230 and the axis 236 limited in the direction of an axial direction end.

Because the guide ring 238 and the movable piston 220 about the axes 230 and 236 are mechanically connected to each other as described above, the guide ring slides 238 integral over the fixed cylinder 202 in a locking manner with the sliding movement of the movable piston 220 ,

On the outside of the fixed cylinder 202 is a compression coil spring 250 arranged. The compression coil spring 250 is structured so that in the case of a compression coil spring 250 with cylindrical shape, their inner diameter is considerably larger than the outer diameter of the fixed cylinder 202 is, with the fixed cylinder 202 through the Compression coil spring 250 stretches through. Furthermore, the outer diameter of the compression coil spring 250 equal to or less than the shortest distance between an outer peripheral portion of the axis 230 and an outer peripheral portion of the axle 236 , with the compression coil spring 250 between the axis 230 and the axis 236 is arranged.

One end of the compression coil spring 250 stands with the flange section mentioned above 208 in pressure contact, and its other end is with the axle support pieces 240 and 242 of the guide ring 238 in pressure contact. Accordingly, the axle support pieces 240 and 242 from the flange section 208 by the driving force of the compression coil spring 250 pushed away.

Over an inner circumference of the fixed cylinder 202 is on an inner peripheral portion on an opening end side of the fixed cylinder 202 an annular groove 252 intended. An o-ring 254 which is a sealing device formed in a ring shape made of rubber or a synthetic resin material having substantially the same elasticity as rubber is in the annular groove 252 arranged. The o-ring 254 is close to both a bottom portion of the groove 252 as well as on the outer peripheral portion of the movable piston 220 attached so as to provide a seal between the inner peripheral portion of the fixed cylinder 202 and its opening end side and the outer peripheral portion of the movable piston 220 to accomplish.

The operations and results of the present second embodiment are described below. When the motor pump provided on the cleaning liquid tank is operated to suck the cleaning liquid from the tank, the cleaning liquid is guided to the pipe element which is a hose, a pipe or the like by the fluid pressure in accordance with the output of the motor pump. The cleaning liquid flows over the pipe element through the inner portion of the connecting portion 206 and is conveyed so as to enter the interior of the fixed cylinder 202 and the movable piston 220 to be led.

On a distal end side of the movable plunger 220 (ie the side with the housing 134 ) the ball valve is standing 118 with the hole of the seal 138 due to the driving force of the compression coil spring 126 in pressure contact, creating the hole in the seal 138 is closed. Because the seal 138 close to the body 114 and the base section 62 is attached and the hole of the seal 138 with the feed hole 222 communicates is the distal end portion of the feed hole 222 through the ball valve 118 locked.

The attached to the inner portion of the movable piston 220 guided cleaning liquid flows through the feed hole in this way 222 that they're so out of the piston 220 is moved. Because the feed hole 222 through the ball valve 118 is closed, the cleaning liquid cannot come out of the movable piston 220 be dissipated. In this state, the internal pressure in the inner portion of the fixed cylinder increases 202 , because the cleaning fluid continuously on the fixed cylinder 202 and the movable piston 220 is guided, whereby the movable piston 220 from the opening end of the fixed cylinder 202 against the driving force of the compression coil spring 250 is pushed outwards.

The cleaning liquid now flows between the inner peripheral portion of the movable piston 220 and the outer peripheral portion of the fixed cylinder 202 through the section such that it extends from the opening end of the fixed cylinder 202 exit. Because the O-ring 254 a seal between the inner peripheral portion of the fixed cylinder 202 and the outer peripheral portion of the movable piston 220 on the opening end side of the fixed cylinder 202 creates, however, the cleaning liquid cannot from the opening end of the fixed cylinder 202 exit to the outside.

If the internal pressure of the fixed cylinder 202 the fixed cylinder is increased 202 further deformed such that the inside diameter of the fixed cylinder 202 at an axial direction middle portion of the fixed cylinder 202 elevated. The o-ring 254 but is at the opening end of the fixed cylinder 202 provided on which the inner diameter is not or only very slightly increased. Moreover, the flange section 208 at the opening end of the fixed cylinder 202 provided and the thickness of the opening end of the fixed cylinder 202 is larger than other sections of it, which also increases its stiffness. Accordingly, it is possible to reduce the holding force of the O-ring 254 to prevent and maintain a seal condition. If the movable piston 220 protrudes further outward in the state described above, together with the movable piston 220 integral moving guide ring 238 with the flange section 208 brought into contact. Consequently, the movement of the movable piston 220 limited in the direction of the projection. If from this condition the cleaning fluid continues to continuously reach the fixed cylinder 202 and the inner portion of the movable piston 220 is guided, the internal pressure of the fixed cylinder exceeds 202 and the movable piston 220 the driving force of the compression coil spring 126 and the cleaning fluid pushes the ball valve 118 against the driving force of the compression coil spring 126 so the ball valve 118 from the seal 138 to move away. As a result, the feed hole 222 opened and the cleaning fluid flows through the door insertion hole 222 to the inside of the valve receiving section 116 with which the cleaning liquid passes through the cleaning liquid flow passage 128 and from the spray opening 112 the nozzle 110 is sprayed out in the direction of the headlight.

In this embodiment, the axes serve 230 and 236 as a device for preventing rotation of the movable piston 220 around its axis. Accordingly, the movable piston 220 do not turn around this axis. Thus, the spray direction for the cleaning liquid from the spray opening 112 not changed. This means that it is possible to reliably spray the cleaning liquid onto the headlight.

The following is a description of the operations and results of those embodiments that differ in operation. As is mentioned above, the spray nozzle is 200 on the vehicle body in the same way as the spray nozzle 10 according to the above-mentioned first embodiment, but foreign matter such as rain water, dirt or the like is not fixed in the fixed cylinder 202 can penetrate because the portion between the inner peripheral portion of the opening end of the fixed cylinder 202 and the outer peripheral portion of the movable piston 220 is sealed by the O-ring 254.

Because the section of the movable piston 220 inside the fixed cylinder 202 is not released to the outside when the movable piston 220 inside the fixed cylinder 202 and foreign matter such as rain water, dirt or the like as described above is not in the fixed cylinder 202 can penetrate, foreign matter does not adhere to the outer outer peripheral portion of the movable piston 220 in this state. As a result, the inner peripheral portion of the fixed cylinder 202 and the outer peripheral portion of the movable piston 220 during sliding of the movable piston 220 not damaged by foreign material.

The following is a description a third embodiment of the invention given.

13 is a perspective view showing a structure of a spray nozzle 280 according to the present embodiment, wherein 14 a cross section of this spray nozzle 280 shows.

As shown in the figures, this is a spray nozzle 280 not with the compression coil spring 250 according to the second embodiment mentioned above, but instead has a pair of compression coil springs 282 and 284 ,

The compression coil spring 282 is structured in such a way that its inner diameter in the case of a cylindrical shape is larger than the outer diameter of the axis 230 and is the axis 230 through the compression coil spring 282 extends. One end of the compression coil spring 282 is in pressure contact with the flange section and its other end is in contact with the axle support piece 240 in pressure contact. Consequently, the axle support piece 240 from the flange section 208 by the driving force of the compression coil spring 282 pushed away.

The compression coil spring 284 is structured in such a way that its inner diameter in the case of a cylindrical shape is larger than the outer diameter of the axis 236 and is the axis 236 through the compression coil spring 284 extends through. One end of the compression coil spring 284 stands with the flange section 208 in pressure contact and its other end is with the axle support piece 242 in pressure contact. Consequently, the axle support piece 242 from the flange section 208 by the driving force of the compression coil spring 284 pushed away.

As mentioned above, essentially the same operations as those of the spray nozzle can 200 according to the above-mentioned second embodiment and the same effects and results can be obtained because of the difference between the spray nozzle 200 and the spray nozzle 280 essentially the difference with respect to a compression coil spring 250 and the compression coil springs 282 and 284 concerns.

Claims (16)

Spray nozzle device, comprising: a cylinder ( 60 ) with a first end section, which has a nozzle ( 110 ) and a second end portion having an opening; a hollow cylindrical piston ( 84 ) which forms a fluid flow passage, the piston having one end portion through the opening into the cylinder ( 60 ) engages and is slidably received in this and at its other end a connecting section ( 98 ) for connection to a fluid source, and a sealing ring ( 82 ) which is tightly arranged on an inner peripheral surface of the second end portion of the cylinder to provide a sealing connection with an outer peripheral surface of the piston, wherein the nozzle ( 110 ) in a the piston ( 84 ) facing nozzle end portion a hollow valve receiving portion forming a fluid flow passage ( 116 ) in which a ball valve ( 118 ) is received, whose spring-loaded ball in the direction of a blocking position in the longitudinal direction of the valve receiving section ( 116 ) can be moved between the blocking position and a release position, limiting the movement of the ball valve ( 118 ) in the radial direction, which is essentially perpendicular to the longitudinal direction of the valve receiving section ( 116 ) runs, a Guide element in the valve receiving section ( 116 ) is formed, which has a plurality of projections ( 120 . 162 ) which is on the inner peripheral surface of the hollow valve receiving portion ( 116 ) integrally formed and arranged substantially the same distance apart radially into the valve receiving section ( 116 ) protrude and along the longitudinal direction of the valve receiving portion ( 116 ) extend. A spray nozzle device according to claim 1, wherein a circular groove ( 80 ) is provided on the inner peripheral surface of the second end portion of the cylinder, and the sealing ring ( 82 ) in the circular groove ( 80 ) is included. Spray nozzle device according to claim 1 or 2, which further comprises a carrier device ( 18 ) with the other end of the piston ( 84 ) and the piston ( 84 ) in such a way that the piston ( 84 ) along the axial direction of the piston ( 84 ) is not movable, and the piston ( 84 ) can be rotated. The spray nozzle device according to claim 3, wherein the connecting portion ( 98 ) of the other end of the piston has an axis which is at a predetermined angle θ to the piston axis. Spray nozzle device according to claim 3 or 4, wherein the carrier device ( 18 ) an element ( 72 ) to prevent rotation of the cylinder ( 60 ) around an axis of the cylinder. Spray nozzle device according to claim 3, 4 or 5, wherein the carrier device ( 18 ) two parts ( 14 . 16 ), which are detachably connected, so that the piston ( 84 ) and the cylinder ( 60 ) to cover. The spray nozzle device according to claim 6, wherein the carrier device ( 18 ) has at least one drainage hole passing through it. Spray nozzle device, comprising: a cylinder ( 202 ) with a first end portion having an opening and a second end portion having a connecting portion for connection to a fluid source; a hollow, cylindrical piston ( 220 ) which forms a fluid flow passage, the piston at one end of a nozzle ( 110 ) and its other end in the cylinder ( 202 ) is slidably received, and a sealing ring ( 254 ) which is fixedly arranged on an inner circumferential surface of the first end section of the cylinder in order to create a sealing connection with an outer circumferential surface of the piston, the nozzle ( 110 ) in a the piston ( 84 ) facing nozzle end portion a hollow valve receiving portion forming a fluid flow passage ( 116 ) in which a ball valve ( 118 ) is received, the ball of which is spring-loaded in the direction of a locking position in the longitudinal direction of the valve receiving section ( 116 ) can be moved between the blocking position and a release position, limiting the movement of the ball valve ( 118 ) in the radial direction, which is essentially perpendicular to the longitudinal direction of the valve receiving section ( 116 ), a guide element in the valve receiving section ( 116 ) is formed, which has a plurality of projections ( 120 . 162 ) which is on the inner peripheral surface of the hollow valve receiving portion ( 116 ) integrally formed and arranged essentially at the same distance from one another radially into the valve receiving section ( 116 ) protrude and along the longitudinal direction of the valve receiving portion ( 116 ) extend. A spray nozzle device according to claim 8, wherein a circular groove ( 252 ) is provided in the inner peripheral surface of the second end portion of the cylinder, and the sealing ring ( 254 ) in the circular groove ( 252 ) is included. Spray nozzle device according to one of claims 8 or 9, which further comprises a device ( 230 . 236 ) to prevent the piston from rotating ( 220 ) around an axis of the piston. Shut-off valve that can be placed between a fluid source and a nozzle, the shut-off valve comprising: a hollow member ( 114 ) provided on the nozzle side of the shutoff valve, the hollow member forming a fluid flow passage; a ball valve ( 118 ) that in the hollow element ( 114 ) is arranged and is movable between a blocking position and a release position, the blocking position provided for blocking the fluid flow passage being provided in the direction of a fluid source side of the shut-off valve and the release position in the direction of the nozzle side from the blocking position; and a drive element ( 126 ) that in the hollow element ( 114 ) for continuously pressing the ball valve ( 118 ) is arranged in the blocking position, in order to limit the movement of the ball valve ( 118 ) along a radial direction, which is substantially perpendicular to a line connecting the locking position and the release position, a guide element ( 120 . 162 ) in the hollow element ( 114 ) is provided, the guide element ( 120 . 162 ) a plurality of protrusions ( 120 . 162 ), which on an inner surface of the hollow element ( 114 ) are integrally formed and essentially at the same distance from one another around the inner circumference of the hollow element ( 114 ) are arranged, and each projection radially into the interior of the hollow element ( 114 ) protrudes and along the longitudinal axis direction of the hollow element ( 114 ) extends. Shut-off valve according to claim 11, which further comprises a tubular element ( 60 ) on the fluid source side of the hollow member ( 114 ), the tubular element ( 60 ) a receiving section ( 134 ) for receiving a fluid source side end of the hollow member ( 114 ) Has. Shut-off valve according to claim 12, which further comprises a fastening device ( 140 . 148 ) for detachable connection of the hollow element ( 114 ) with the receiving section ( 134 ) Has. Shut-off valve according to claim 12 or 13, wherein a sealing element ( 138 ) between the hollow element ( 114 ) and the receiving section ( 134 ) is arranged, the sealing element ( 138 ) has an end face on which a bore is provided which allows the fluid to flow through, and the sealing element has a further end face which has a seal between the hollow element ( 114 ) and the receiving section ( 134 ) forms, and the bore providing the fluid with a passage with the ball valve ( 118 ) for sealing the fluid flow passage when the ball valve ( 118 ), is in its locked position. Shut-off valve according to claim 14, wherein the sealing element ( 138 ) is made of an elastic material. Spray nozzle device, comprising: a cylinder ( 60 ) with a first end section, which has a nozzle ( 110 ) and a second end portion having an opening; and a hollow cylindrical piston ( 84 ) which forms a fluid flow passage, the piston having an end which is in the cylinder ( 60 ) is slidably received and has another end that has a connecting portion ( 98 ) for connection to a fluid source, a sealing ring ( 82 ) is fixedly arranged on an inner peripheral surface of the second end portion of the cylinder in order to create a sealing connection with an outer peripheral surface of the piston.