EP0261320A2 - Pistolet de soupape pour appareil de nettoyage à haute pression - Google Patents

Pistolet de soupape pour appareil de nettoyage à haute pression Download PDF

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Publication number
EP0261320A2
EP0261320A2 EP87109168A EP87109168A EP0261320A2 EP 0261320 A2 EP0261320 A2 EP 0261320A2 EP 87109168 A EP87109168 A EP 87109168A EP 87109168 A EP87109168 A EP 87109168A EP 0261320 A2 EP0261320 A2 EP 0261320A2
Authority
EP
European Patent Office
Prior art keywords
valve
tube
gun
area
gun housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87109168A
Other languages
German (de)
English (en)
Other versions
EP0261320A3 (fr
Inventor
Wolfgang Suttner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0261320A2 publication Critical patent/EP0261320A2/fr
Publication of EP0261320A3 publication Critical patent/EP0261320A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
    • B05B1/302—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve with a ball-shaped valve member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B05B12/0024—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position
    • B05B12/0026—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position to inhibit delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns

Definitions

  • the known valve gun from which the invention is based (DE-OS 33 01 768, but also DE-OS 32 09 902), is designed in four parts.
  • the core of this valve gun is a valve made of metal, which is designed as a turned part or cast part and contains all the components essential for the valve function of the valve gun.
  • the gun housing of the known valve gun preferably consists of heat-insulating material, in particular plastic, and is usually either constructed from two half-shells or even made in one piece, in which case an openable housing flap is provided in order to be able to reach the valve housing in the interior of the gun housing.
  • the object of the invention is to simplify the known valve pistol considerably in terms of construction and at the same time to improve it in terms of safety and handling.
  • valve gun with the features of the characterizing part of claim 1.
  • the previously required, expensive and heavy valve housing made of cast material is completely eliminated, since a pipe area, preferably the high-pressure side pipe area, is used to hold the valve.
  • a structural adjustment of the valve to the cylindrical shape of the receptacle in the pipe area is required, but such an adjustment is relatively easy.
  • the actuating element for the closure body of the valve must somehow be guided outwards in order to be able to interact with the hand lever on the gun housing. Then this is the Possibility created to design the two pipe areas in one piece, that is, to design them as a continuous pipe.
  • a seamless, straight tube can serve as the starting material for this.
  • valve gun shown in FIGS. 1, 6 and 8 in each case in the basic features in different exemplary embodiments is intended for a high-pressure cleaning device, such as is used privately for example at petrol stations or garages for cleaning motor vehicles, but is also already being used increasingly in the hobby area.
  • This valve gun initially has a gun housing 10 which, in the preferred exemplary embodiment shown here, consists of heat-insulating material, in particular a plastic, and is formed from two half-shells or can also be made in one piece.
  • a valve 17 is arranged in the gun housing 10, which can be seen particularly clearly in FIG. 2.
  • the valve 17 has a closure body 25 in a valve chamber, here in a known manner in the form of a valve ball, a valve seat assigned to the closure body 25 and a compression spring 26 which loads the closure body 25 in the closing direction.
  • the compression spring 26 is supported on a support ring 27 fixedly connected to the valve 17, this support ring 27 thus forms, so to speak, the abutment for the compression spring 26.
  • the closure body 25 engages in the known an actuator 24, which is designed here in the form of a protruding into the interior of the valve 17 push rod.
  • the gun housing 10 are further each arranged a from a liquid Q keitszuive- tion to the valve 17 and a fluid discharge from the valve 17 serving tube portion 14 and 15.
  • the associated one of the fluid supply tube portion 14 dql is used for connecting a supply pipe 12 od..
  • the high-pressure resistant serves for the inflow of liquid, while the pipe area 15 for liquid discharge with a spray lance 41 or dql to be explained later. connected is.
  • connecting pieces 9, 8 can be provided for connecting the inflow pipe 12 and possibly the spray lance 41.
  • these connecting pieces 9, 8 can be designed as screw connecting pieces. Further preferred configurations of these connecting pieces 9, 8 are explained in more detail below.
  • a hand lever 11 is movably mounted in the gun housing 10 and acts on the closure body 25 of the valve 17 via the actuating element 24.
  • This hand lever 11, like the gun housing 10, is preferably made of a heat-insulating material, in particular plastic.
  • the two tube regions 14, 15 are arranged at an angle, here and preferably at an obtuse angle, in particular at an angle of approximately 135 °. This corresponds to the usual ergonomic peculiarities in a valve gun of the type in question.
  • the pipe area 15 serving for liquid evacuation in the embodiment shown in FIG. 1 is extended from the gun housing 10 and in the area outside the gun housing 10 by a protective tube known per se 16 surrounded, which also preferably consists of a heat insulating material and serves as an additional handle.
  • the two tube regions 14, 15 are made in one piece according to the teaching of the invention, that is, in the special case here, as a continuous angle tube 13 ge are designed.
  • the angled tube 13 was created from a continuous straight tube section by cold working, as is well known per se in terms of production technology. So that the previously known three parts of the valve gun - tube sections 14, 15 and valve housing arranged between them - at least as far as the housing is concerned, integrated into a single part, namely the continuous, one-piece angle tube 13.
  • the valve 17 now applies is arranged in the interior of one of the tube regions 14, 15, that is to say in the interior of the angle tube 13, preferably in the tube region 14 which serves for the liquid supply.
  • the actuating element 24 for the closure body 25 of the valve 17 must of course now be led out of the pipe area 14 or 15, so that the pipe area 14 or 15 must consequently have an opening 23 for the passage of the actuating element 24.
  • it is a hole coaxial with the tube region 14, which, strictly speaking, is itself arranged in the tube region 15.
  • Fiq. 7 is a hole which is coaxial with the tube region 14 and which is arranged in the tube region 14 itself. In theory, the opening could also be the open end of one of the tube areas.
  • valve 17 is designed as an insert body inserted from one end of the receiving tube region 14 and receiving the closure body 25, and that the actuating element 24 extends from the insert body like a pin and through the opening 23 in the tube region 14 or 15 protrudes through or protrudes from the outside of the tube area through the opening into the insert body like a pin.
  • the valve 17, which is preferably a circular cylindrical insert body, can be inserted into the tube region from the open end of the tube region 14, so that the entire valve 17 can be replaced in a simple manner if it should become defective. This takes into account the possibly very harsh operating conditions under which valve guns of the type in question are used.
  • a tube area 14 or 15 adjacent to the valve 17 has an indentation 19 or other reduction in cross-section, that the opening 23 for the passage of the actuating element 24 at the end of the indentation 19 facing the valve 17, preferably approximately is arranged transversely to the longitudinal axis of the tubular region 14 end wall 20, and that part of the actuating element 14 is in the space created by the indentation 19.
  • Such an indentation 1 9 can be easily carried out in a stretched, for example seamlessly drawn tube by warm Deformation or cold deformation, in particular by compression molding, as has been recognized according to the invention.
  • This indentation 19 can thus also be produced in terms of production technology in such a way that no problems arise in terms of safety technology, namely the seamless, continuous guidance of the flowing medium under high pressure in the angled tube 13 remains unaffected.
  • the indentation 19 is arranged in the angular region of the angle tube 13 on the outside of the angle.
  • the area that has to be deformed anyway when the through tube is bent at an angle is used for the simultaneous formation of the indentation 19.
  • This has the further advantage that the free end of the actuating element 24 protrudes laterally beyond the tube region 15 without additional measures, so that another actuating element connected to the hand lever 11 can easily engage there.
  • the position of this free end above the tube area 15 gives the possibility of pivoting the hand lever 11 about a pivot axis 29 which is very close to the actuating element 24, but is very far from the point of application of an operator's hand. This makes it possible to implement a large lever ratio of the hand lever 11, which is advantageous in terms of handling. This will be taken up again later as an argument.
  • valve 17 is arranged in the tube area 14 near a connecting piece 9, which may protrude from the gun housing 10.
  • the indentation 19 is then arranged in the tube area 14, preferably on the side of the valve 17 facing away from the connecting piece 9.
  • This indentation 19 here has a trough-like shape aligned in the longitudinal direction of the tube region 14, into which an actuating element can engage laterally, which is connected to the hand lever 11. This construction will be explained in more detail later.
  • the pipe region 14 receiving the valve 17 is provided with a connecting piece 9 for connection to an external inflow pipe 12 or the like, as already mentioned above has been.
  • a connecting piece 9 for connection to an external inflow pipe 12 or the like, as already mentioned above has been.
  • Preferred is the embodiment shown here, in which the tube area 14 is expanded to part lengths to form the connecting piece 9.
  • Such a widening can also take place by means of cold forming using modern production engineering methods.
  • a step-like widening to different diameters can take place, so that there are circumferential contact surfaces lying coaxially with the tube region 14, which can be used for different purposes.
  • a connection piece 18 which is firmly connected to the inflow pipe and which can be easily inserted into this widening of the pipe region 14.
  • valve 17 designed as an insert body is first inserted as far as possible against the end wall 20 into the tube region 14 and then the connecting piece 18 with the inflow tube 12 located thereon is then inserted.
  • the valve 17 bears against the end wall 20 via a bearing ring 21, on which a sealing ring 22 is supported.
  • the bearing ring 21 and the sealing ring 22 each have a central opening for the passage of the actuating element 24 designed as a push rod and are thus automatically centered by the actuating element 24 on the opening 23 in the indentation 19 of the angled tube 13.
  • the valve 17 designed as an insert body is practically held in the tube area 14 in that the connecting piece 18 fixes it in the interior of the tube area 14.
  • Sealing rings 28 and 35 ensure that the liquid on the high-pressure side cannot flow past the valve 17 into the tube area 15.
  • Axial pressure on the actuating element 24 designed as a push rod presses the closure body 25 designed as a valve ball downward in FIG. 2 against the spring force of the compression spring 26 and thus opens a flow passage from the tubular area 14 into the tubular area 15.
  • the hand lever 11 If the hand lever 11 is released, it causes the compression spring 26 an immediate closing of the valve 17 by pressing the closure body 25 into a valve seat.
  • the compression spring 26 is dimensioned sufficiently strong to simultaneously push the actuating element 24 back and thus push the hand lever 11 into its starting position. This position can be locked on the valve gun by means of a pivotable locking lever 30, which is known per se and in a particularly be preferred embodiment will be explained later.
  • the hand lever 11 is surrounded by a protective bracket 31, on which a stop 53 is designed such that the area of the hand lever 11 that can be grasped by the hand of an operator is considerably smaller than normal, so that the hand lever 11 is initially pressed a particularly high force is required. This is a special safeguard against unintentional operation of the hand lever 11.
  • FIG. 2 shows a particularly preferred embodiment of the invention, which is characterized in that the connecting piece 18 has an annular groove 33 and the tube region 14 has insertion slots 32 aligned with the annular groove 33 and that for connection an approximately U-shaped bracket 34 with its U-legs can be inserted into the insertion slots 32 and the annular groove 33.
  • the inflow pipe 12 is rotatable with the pipe region 14 about the common longitudinal axis, but is firmly connected in the direction of the longitudinal axis.
  • the clamp 34 reliably prevents the axial displacement of the connecting piece 18 relative to the tube region 14.
  • the gun housing 10 has an opening for inserting the clamp 34 and that the clamp 34 has an enlarged head region and the head region completely closes the opening when the clamp 34 is inserted.
  • the clip 34 consists of heat-insulating material, in particular plastic, at least in the head region.
  • the clamp 34 is adapted to the gun housing 10 so that it integrally closes it, but is at the same time accessible from the outside.
  • connection between the inflow tube 12 and the tube region 14 can thus be released from the outside without having to open the gun housing 10.
  • the clamp 34 needs to be removed radially from the tube area 14, so that the connection nozzle 18 can be pulled out.
  • the valve 17 is then removable.
  • FIG. 3 shows the clip technique of the preferred exemplary embodiment of the invention explained above particularly clearly.
  • the clamp 34 also consists of heat-insulating, inherently elastic material in the region of the U-legs, so that it can be snapped onto the connecting piece 18 in the manner of a snap ring and is thus secured captively on the gun housing 10.
  • the clamp technology explained above also means that relatively small wall thicknesses of the tube regions 14, 15 can be achieved here, since threads no longer have to be attached. Consequently, this technology is particularly relevant for use with high-pressure cleaning devices in the medium pressure range, especially in the hobby area.
  • a sufficiently reliable, stable construction is realized at low cost, which is cost-adapted to the intended area of application.
  • FIG. 1 also shows a very particularly preferred exemplary embodiment, which is particularly distinguished by the fact that the coupling region for the inflow tube 12, that is to say for the high-pressure side, is arranged deeply recessed in the interior of the gun housing 10.
  • the connecting piece 9 of the pipe area 14 serving for the supply of liquid is set back into the interior of the gun housing 10.
  • This set-back arrangement is particularly expedient if the previously explained freely rotatable plug connection with U-shaped bracket 34, etc. is implemented.
  • the gun housing 10 have an insertion guide 6 for an end of the inflow tube 12 to be inserted. This is particularly expedient if, as is often provided in the medium pressure range of the application area of valve pistols of the type in question, the inflow pipe 12 is a flexible hose line.
  • the pipe area 14 serving for the liquid supply has been described in various configurations. It is particularly expedient if, as shown in FIG. 7, the pipe area 15 used for the liquid discharge is continuously extended to form an elongated spray lance 41. This is particularly advisable if, as in the hobby sector, for example, only a predetermined type of spray lance is used, in which only the spray nozzle arranged at the outlet end is replaced. A spray lance 41 drawn through in this way is of course particularly inexpensive in terms of cost.
  • the pipe area 15 serving for liquid evacuation has a connecting piece 8, preferably protruding from the gun housing 10, for connecting an external spray lance 41 or the like . to provide. 1, 4 and 5 so far applies that according to the preferred teaching of the invention, the tube region 15 can be widened to partial lengths. That and how this is technically feasible has already been explained for the pipe area 14.
  • This is a coupling technique which as such is particularly suitable for the medium pressure range of the application area of valve guns of the type in question.
  • a bayonet coupling 46 can be actuated quickly and is structurally fairly simple to manufacture.
  • the spray lance 41 is expediently designed at the front end as a counterpart of the bayonet coupling 46. According to the preferred teaching of the Er Finding the pipe section 15 angled bayonet caps 47 and the spray lance 41 in the bayonet caps 47 entering locking pin 48. With this construction and distribution of the fasteners on the construction parts involved, it is prevented that the wall thickness of the spray lance 41 is weakened by bayonet caps 47.
  • the spray lance 41 is surrounded over most of its length by a protective jacket 42 made of heat-insulating material, so that an operator cannot injure himself on the surface of the spray lance 41, which is also hot when hot water is used.
  • the tube region 15 is widened in sections to different diameters over a fairly long length and that the spray lance 41 can be inserted relatively far into the interior of the tube region 15 (FIG. 5). This is necessary so that the dead weight of the spray lance 41 cannot cause it to kink.
  • the tube region 15 is widened to different diameters in different sections. This results in an annular stop edge 43 on which a compression spring 44 can be axially supported in the tube region 15.
  • the compression spring 44 is used to lock the locking pin 48 on the spray lance 41 in the bayonet cap 47 of the bayonet coupling 46.
  • the compression spring 44 in the exemplary embodiment shown here is held in a clamped manner by the inner surface of the tube region 15, so that it does not readily follow can fall out of the front of the pipe area 15. After the bayonet coupling 46 has engaged, an inadvertent turning back of the spray lance 41 is prevented by the angular shape of the bayonet caps 47, which can be seen in particular in FIG. 5.
  • the end of the spray lance 41 which is designed as part of the bayonet coupling 46, has a connecting piece 45 which, in the exemplary embodiment shown here, itself bears axially against the compression spring 44.
  • two circumferential ring grooves for circumferential sealing rings 51 are arranged on the connecting piece 45, one sealing ring 51 sealingly abutting on the inner surface of the tube region 15 and the other sealing ring 51 on the inner surface of the spray lance 41, so that overall a sealed liquid flow through the connecting piece 45 is possible .
  • This connector is also a particularly suitable construction for the medium pressure range.
  • the circumferential ring grooves for the sealing rings can also be arranged on the spray lance.
  • the spray lance could be inserted into the tube area up to the angular range, it only being necessary to ensure that a corresponding cushioning for the effectiveness of the bayonet coupling is present on the spray lance.
  • connection piece 9 is firmly connected to the pipe area 14 beforehand by pressing, soldering, brazing, welding or the like.
  • a special connection piece 9 is provided, in the exemplary embodiment shown a screw connection piece, which is particularly suitable for the high pressure area of the use of such a valve gun.
  • This connector 9 can be connected in advance to the continuous angle tube 13, in particular thus to the tube area 14, which is particularly expedient in terms of manufacture.
  • the connecting piece 9 is otherwise designed such that it has an insert socket, in particular a screw socket, which receives the valve 17.
  • this can easily be achieved by a further internal thread of the connecting piece 9, into which the insert body of the valve 17 can be screwed by means of an external thread.
  • you can also just choose a plug-in socket, which is only slightly secured against slipping out in the connecting piece 9 and is fixed in a pressure-tight manner in a similar manner to that shown in FIG. 2 by connecting the inflow pipe.
  • valve 17 is very close to the connecting piece 9, which in turn protrudes a little downward from the gun housing 10.
  • the valve 17 is located here coaxially in the tube region 14 at the lower end of the handle section 7 of the gun housing 10.
  • the actuating element 24 also projects into the free space formed immediately above the valve 17 by the indentation 19.
  • This position of the valve 17 means that the valve 17 is particularly easy to replace. Otherwise, this position of the valve 17 corresponds in a particularly expedient manner to a special arrangement of the hand lever 11 in the gun housing 10 which will be explained further below.
  • the exemplary embodiment according to FIGS. 1 to 5 will now be explained.
  • the hand lever 11 in the region of an opening slot 37 is penetrated by a spring-loaded safety lever 30 mounted in the gun housing 10. It also applies here that the released hand lever 11 can be held by a stop edge 40 of the locking lever 30 in a locking position.
  • the Sicherunqshebel 30 is acted upon by a separate spring and in the gun body 10 ent q of the spring force about a pivot axis 36 eqen pivotally mounted.
  • the safety lever 30 is located near the upper end of the hand lever 11 and has a pushbutton 38 on the pressure side of the hand lever 11, with the aid of which it can be pivoted about the axis of rotation 36 against the action of its spring.
  • the securing lever 30 in the exemplary embodiment shown here is provided with a bead 39 on which the stop edge 40 is formed, on which the hand lever 11 rests in the non-actuated position. If the hand lever 11 is to be actuated in the exemplary embodiment shown here, the pushbutton 38 of the securing lever 30 is first pressed, so that it moves according to FIG. 1 moved upward within the opening slots 37.
  • the stop edge 40 releases the hand lever 11 and this can now be pressed. It is therefore possible to open and close the valve 17 without the locking lever 30 taking effect, because in the opening region of the valve 17 shown in dash-dotted lines in FIG. 1, the bead 39 is supported on the hand lever 11 in the region of the opening slot 37. Even when the hand lever 11 is in the middle position, the valve 17 is closed. Here, however, the safety lever 30 is still pivoted up. Only when the hand lever 11 is completely released does a special compression spring 52, which can be seen further up in the gun housing 10, cause the hand lever 11 to be pivoted further into its rest position. Only now does the safety lever 30 snap back into its safety position, in which it is no longer possible to actuate the valve gun via the hand lever 11.
  • the previously mentioned stop 53 on the protective bracket 31 has a special function in the present construction with a push button 38 for the safety lever 30, namely in that the distance from the stop 53 to the pushbutton 38 in the safety position, i.e. the previously explained rest position of the hand lever 11 with the hand lever lying at the stop 53, is less than a normal hand width and is smaller than the free area of the hand lever 11 in a release position, i.e. the middle position shown in broken lines, and in one Working position with the valve open 17.
  • the pivot axis 29 of the hand lever 11 is in a kinematically quite favorable position above and in the immediate vicinity of the actuating end of the actuating element 24.
  • the hand lever 11 is arcuate past the tube region 15 in the Handle section 7 or in the protective bracket 31 and can be operated with a relatively large lever arm.
  • the lever arm that has the index finger of the hand of an operator is, however, considerably shorter than '' the lever arm, the Central, the fin q he Ringfinqer or small finger of one hand of an operator.
  • this is exactly the same as with all previously known valve guns which work with a hand lever 11 actuated by the fingers of an operator's hand.
  • the handle section 7 and the hand lever 11 on the handle section 7 of the gun housing 10 now apply in a manner corresponding to FIGS. 1 to 5 that the hand lever 11 is approximately the same extends parallel to the handle section 7 from the lower, connection-side end of the handle section 7 to the upper end of the handle section 7 close to an angular range.
  • the angular position of the hand lever 11 relative to the handle section 7 naturally changes when the hand lever 11 is actuated.
  • the hand lever 11 at the lower end of the handle section 7 is in the exemplary embodiment according to FIGS. 6 to 8 pivoted about a pivot axis 60.
  • the hand lever 11 is made particularly light for manufacturing and cost reasons, it is advisable to that a special guidance of the hand lever in the gun housing 10 is provided. This can take place through the side walls of the opening slot 37, but in the embodiment according to FIGS. 6 to 8 it takes place in particular in that the hand lever 11 cooperates at the upper end with a guide element 61 on the gun housing 10 and, preferably, an arcuate guide slot 62 having.
  • the hand lever 11 is made relatively wide. You can easily run the hand lever 11 made of plastic and nevertheless achieve sufficient connection rigidity in that the hand lever 11, at least in the area near the upper end, in cross section in a plane including the pivot axis 60 as a double lever, preferably approximately U-shaped with Pipe area 14 open U, is executed and in the pivoted to the handle portion 7 immersed in the gun housing 10 and laterally encompasses the pipe section 14. This is indicated in Fig. 7 by the dashed representation of the hand lever 11.
  • the handle section 7 heats up relatively strongly when the valve gun is used for a long time. This is unpleasant in terms of handling and safety, but has so far been accepted as unavoidable, since the heat dissipation to the outside is of course particularly bad in this area.
  • a remedy is now provided in that the pipe sections 14, 15 are arranged in the gun housing 10 at a distance from the walls and, preferably, that the connecting piece 9 is arranged at the lower end of the handle section 7 in an extension piece 65 of the gun housing 10.
  • connection piece 9 is arranged in the extension piece 65, particularly good thermal insulation is achieved in the handle section 7, since direct contact of metal and plastic, which is necessarily present in the area of the connecting piece 9, is certainly not in the area of the handle portion 7 that an operator's hand normally encompasses.
  • the gun housing 10 is provided with air circulation openings 63, 64.
  • air circulation openings 63, 64 This can be seen very well in FIG. 8, FIG. 7 making it clear that and how the interior of the gun housing 10 enables an air flow for cooling purposes.
  • the openings 63 and 64 arranged in a particularly expedient manner in FIG. 8 at the lower and upper end of the handle section 7 lead to a kind of chimney effect in the handle section 7 of the gun housing 10 and thus to a highly effective cooling effect.
  • the arrangement of the openings 63 at the lower end in the extension piece 65 ensures that these openings 63 are not accidentally covered by the hand of an operator.

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  • Nozzles (AREA)
  • Mechanically-Actuated Valves (AREA)
EP87109168A 1986-09-26 1987-06-26 Pistolet de soupape pour appareil de nettoyage à haute pression Withdrawn EP0261320A3 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3632755 1986-09-26
DE3632755 1986-09-26
DE3702586 1987-01-29
DE3702586 1987-01-29
DE3720241 1987-06-19
DE3720241A DE3720241C2 (de) 1986-09-26 1987-06-19 Ventilpistole für ein Hochdruckreinigungsgerät

Publications (2)

Publication Number Publication Date
EP0261320A2 true EP0261320A2 (fr) 1988-03-30
EP0261320A3 EP0261320A3 (fr) 1990-01-31

Family

ID=27194896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109168A Withdrawn EP0261320A3 (fr) 1986-09-26 1987-06-26 Pistolet de soupape pour appareil de nettoyage à haute pression

Country Status (4)

Country Link
US (1) US4880166A (fr)
EP (1) EP0261320A3 (fr)
DE (1) DE3720241C2 (fr)
DK (1) DK504487A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926461A1 (de) * 1989-07-15 1991-01-24 Suttner Gmbh & Co Kg Ventilpistole, insbesondere fuer ein hochdruckreinigungsgeraet
EP0444523A2 (fr) * 1990-02-28 1991-09-04 Suttner Gmbh & Co. Kg Pistolet à valve pour un appareil de nettoyage à haute pression ainsi qu'un raccord de tuyau, en particulier pour un tel pistolet à valve
US5176327A (en) * 1990-06-20 1993-01-05 Spraying Systems Co. Trigger operated spray gun
WO2007107169A1 (fr) * 2006-03-22 2007-09-27 Alfred Kärcher Gmbh & Co. Kg Pistolet de pulvérisation a haute pression pour appareil de nettoyage a haute pression
ITPR20110076A1 (it) * 2011-09-12 2013-03-13 Lavorwash Spa Apparato di erogazione di un getto fluido di lavaggio
WO2017178073A1 (fr) * 2016-04-15 2017-10-19 Alfred Kärcher Gmbh & Co. Kg Pistolet à soupape pour nettoyeur haute pression

Families Citing this family (19)

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DE20108961U1 (de) * 2001-05-29 2001-08-16 Metallwerke Otto Dingerkus GmbH, 57439 Attendorn Abgabe- und Dosierventil für fluidförmige Medien, insbesondere für Heißwasser
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DE3926461A1 (de) * 1989-07-15 1991-01-24 Suttner Gmbh & Co Kg Ventilpistole, insbesondere fuer ein hochdruckreinigungsgeraet
EP0444523A2 (fr) * 1990-02-28 1991-09-04 Suttner Gmbh & Co. Kg Pistolet à valve pour un appareil de nettoyage à haute pression ainsi qu'un raccord de tuyau, en particulier pour un tel pistolet à valve
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US5176327A (en) * 1990-06-20 1993-01-05 Spraying Systems Co. Trigger operated spray gun
WO2007107169A1 (fr) * 2006-03-22 2007-09-27 Alfred Kärcher Gmbh & Co. Kg Pistolet de pulvérisation a haute pression pour appareil de nettoyage a haute pression
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DE3720241A1 (de) 1988-03-31
DK504487D0 (da) 1987-09-25
DK504487A (da) 1988-03-27
EP0261320A3 (fr) 1990-01-31
US4880166A (en) 1989-11-14
DE3720241C2 (de) 1994-09-22

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