EP3079832A1 - Pistolet à valve pour appareil de nettoyage haute pression - Google Patents

Pistolet à valve pour appareil de nettoyage haute pression

Info

Publication number
EP3079832A1
EP3079832A1 EP13811156.2A EP13811156A EP3079832A1 EP 3079832 A1 EP3079832 A1 EP 3079832A1 EP 13811156 A EP13811156 A EP 13811156A EP 3079832 A1 EP3079832 A1 EP 3079832A1
Authority
EP
European Patent Office
Prior art keywords
valve
guide surface
trigger member
valve gun
gun according
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.)
Granted
Application number
EP13811156.2A
Other languages
German (de)
English (en)
Other versions
EP3079832B1 (fr
Inventor
Christoph Breuer
Daniel KNÖDLER
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to HUE13811156A priority Critical patent/HUE037647T2/hu
Publication of EP3079832A1 publication Critical patent/EP3079832A1/fr
Application granted granted Critical
Publication of EP3079832B1 publication Critical patent/EP3079832B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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 invention relates to a valve gun for a high-pressure cleaner, comprising an inlet channel having an inlet for supplying a pressurized liquid and an outlet channel having an outlet for discharging the liquid, a valve arranged in the flow path between the inlet and the outlet, a manual between a rest position and a release position movable trigger member for opening and closing the valve, a manually movable between a locking position and an unlocking position first locking member for locking the trigger member in the rest position, and a hand gripped by the user with the hand grip for holding the valve gun.
  • a pressure hose can be connected to an inlet and, for example, a spray lance can be connected to an outlet.
  • the valve gun can be supplied under high pressure liquid, and the spray lance, the liquid can be directed to an object.
  • the pressure of the liquid may be, for example, more than 100 bar, in particular more than 200 bar.
  • the user has the opportunity to move a trigger member from a rest position to a release position.
  • the trigger member is mechanically coupled to a valve disposed in the flow path between the inlet and the outlet.
  • the valve In the rest position of the trigger member, the valve is closed and in the release position of the trigger member, the valve is open.
  • the valve gun on a first locking member which is manually movable between a locking position and an unlocking position. With the help of the first locking member, the trigger member can be locked in the rest position. This takes that first locking member its blocking position. In order to unlock the trigger member, the first locking member must be transferred to its unlocking position, in which it releases the trigger member.
  • the valve gun has a handle which is designed in the manner of a pistol grip and can be grasped by the user by hand.
  • a valve gun of the type mentioned is known from the publication DE 38 26 784 AI.
  • the trigger member is designed in this valve gun in the form of a pivot lever which is arranged on the outlet facing the front of the handle and detected by the user when gripping the handle with your fingers and can be pivoted in the direction away from the outlet to the rear.
  • a pivotable locking member is positioned below the pivot lever, which is designed in the manner of a bolt, which locks the pivot lever in the rest position. In order to move the pivot lever in its release position, the user must push out the locking member with his fingers from a recess of the pivot lever. This complicates the handling of the valve gun.
  • a valve gun is known from US Pat. No. 7,389,949 B2, in which the triggering member is likewise designed in the form of a pivoting lever, which is arranged on the front side of the handle facing the outlet of the valve gun.
  • a locking lever is used, which is pivotally mounted on the pivot lever and projects in a first position in the direction away from the outlet to the rear of the pivot lever.
  • Swivel lever is aligned.
  • the actuation of the pivot lever takes place against the action of not inconsiderable restoring force of the safety lever. This can lead to fatigue of the user in a prolonged operation of the valve gun, the user of the pivot lever and the See- lever with your fingers to the handle, making it difficult to handle the valve gun.
  • Object of the present invention is to develop a valve gun of the generic type such that it has a simpler handling.
  • the user can embrace the handle, whereby he can actuate the arranged at the back of the handle trigger member with his palm and arranged on the front of the handle first locking member with his fingers.
  • the user can intuitively unlock the trigger member by grasping with his fingers the first locking member and moving it from the blocking position to the unlocking position.
  • the actuation of the trigger member takes place in opposite directions to the actuation of the first locking member.
  • the trigger member and the first locking member are arranged on the handle and can be easily grasped by the user. This facilitates the handling of the valve gun.
  • the trigger member may protrude in the rest position from the back of the handle.
  • the first locking member may protrude in the locking position from the front of the handle.
  • the handle forms a fixed component, which is arranged between the movable trigger member and the movable first locking member and allows the user an intuitive operation of the valve gun.
  • the trigger member may be reciprocated between a rest position in which the valve is closed and a release position in which the valve is opened.
  • the trigger member is mechanically coupled to the valve for this purpose.
  • the trigger member may for example be mounted linearly displaceable.
  • the trigger member is pivotally mounted about a first pivot axis.
  • the user can pivot the trigger member with his palm from the rest position to the release position, after he has previously transferred the first locking member in the unlocking position.
  • the handle has an upper end portion associated with the user's thumb and forefinger and a lower end portion remote from the upper end portion. It is advantageous if the first pivot axis is arranged in the lower end region of the handle.
  • the first locking member can be moved from a blocking position, in which it locks the trigger member in the rest position, in an unlocking position, in which it releases the trigger member.
  • the first locking member can be mounted linearly displaceable. For example, it can be provided that the first locking member protrudes in its locking position from the outlet of the valve gun facing the front of the handle and to release the trigger member in the direction of the handle is displaced to the rear.
  • first locking member is pivotably mounted about a second pivot axis. This allows a structurally particularly simple embodiment of the valve gun.
  • the second pivot axis is favorably aligned parallel to the first pivot axis.
  • the handle has an upper end region assigned to the user's thumb and forefinger and a lower end region facing away from the upper end region.
  • the second pivot axis is preferably arranged in the upper end region of the handle or in a housing region of the valve pistol which is adjacent to the upper end region of the handle.
  • the handle protrudes from a rear housing area of the valve pistol facing away from the outlet of the valve gun and the second pivot axis is arranged in the rear housing area.
  • the first locking member comprises an actuating arm and a locking arm, wherein the actuating arm protrudes in the locking position of the first locking member from the front of the handle and the locking arm in the locking position of the first locking member movement of the trigger member from the rest position blocked in the release position.
  • the locking arm can rest for this purpose with or without play on the trigger member. It is advantageous if the locking arm rests in the blocking position of the locking member with its free end on the trigger member with play or no play.
  • the actuating arm and the locking arm are aligned at an angle to each other.
  • the first locking member is L-shaped, wherein the actuating arm forms a first leg and the Arretismesarm a second leg of the first locking member.
  • the roller arranged at the free end of the locking arm can roll on the release member and release it.
  • the locking arm emerges in the unlocking position of the first locking member in a recess of the trigger member.
  • the trigger member may for example have a recess which receives the locking arm in the unlocking position of the first locking member.
  • the valve gun in an advantageous embodiment of the invention, a second locking member which is movable between a blocking position and an unlocking position back and forth, wherein the trigger member of the second locking member in the locking position can be locked and released in the unlocking position.
  • the valve gun has two independently operable locking members. If the trigger member is to be actuated, Thus, the user must move both the first locking member and the second locking member from a locking position to an unlocking position.
  • the second locking member is movably mounted on a projecting in the rest position of the trigger member from the handle portion of the trigger member, wherein the second locking member protrudes in its locking position from the trigger member and fully immersed in its unlocking position in the trigger member.
  • the second locking member blocks movement of the trigger member toward the handle, and in the unlocking position of the second locking member, the trigger member, provided that the first locking member is in its unlocking position, are moved in the direction of the handle.
  • the second locking member may for example be mounted parallel to the first pivot axis slidably on the trigger member.
  • the trigger member in its in the rest position protruding from the handle area an opening in which the second locking member is slidably mounted.
  • the valve of the aforementioned valve gun conveniently has a closing body, which bears tightly against a valve seat in a closed position and can be acted upon by a valve lifter with an opening force for displacing the closing body in an open position spaced from the valve seat.
  • the valve seat is disposed in the flow path between the inlet and the outlet of the valve gun. If the closing body assumes its closed position, it interrupts the flow connection between the inlet and the outlet. When the closing body assumes its open position, it releases the flow connection between the inlet and the outlet.
  • the trigger member is conveniently coupled via a coupling lever pivotally mounted to a coupling lever with the valve tappet.
  • the trigger member exerts a triggering force on the coupling lever, so that this around the Coupling lever axis is given away and exerts an opening force on the closing body via the valve stem.
  • the interposition of the coupling lever between the trigger member and the valve lifter makes it possible to reduce the actuation force required to open the valve, which must be exerted by the user on the trigger member.
  • the trigger member may be configured as a pivotable about the first pivot axis release lever, which is coupled via the coupling lever with the valve stem.
  • the trigger member is designed as sliding on the handle slide member, which is coupled via the coupling lever with the valve stem and is inserted in the transition from the rest position to the release position in the handle.
  • the coupling lever has an actuating element via which the valve tappet can be acted upon by the opening force.
  • the actuator is conveniently adjustable.
  • the actuating element is designed as an adjusting screw which can be screwed into an internal thread of the coupling lever.
  • a particularly simple handling is achieved in a valve gun of the type mentioned above, in particular in a valve gun of the type described above, characterized in that the coupling lever has a first and a second force receiving element, wherein when moving the trigger member from the rest position to the release position, first Force receiving element and then the second force receiving element can be acted upon with a release force, wherein the first force receiving element has a greater distance from the coupling lever axis than the second force receiving element.
  • the coupling lever favorably has a first force receiving element and a second Force receiving element on.
  • the first force-receiving element is arranged at a greater distance from the coupling lever axis than the second force-receiving element. If the trigger member is moved from its rest position to its release position, the coupling lever is first acted upon by the first force receiving element with a release force and the further movement of the trigger member of the coupling lever is acted upon by the second force receiving element with a release force. During the transition from the rest position to the release position of the trigger member thus change the leverage of the coupling lever.
  • a large opening force can be exerted on the valve stem due to the favorable lever ratio, resulting from the relatively large distance between the first force receiving member and the coupling lever axis, even if the user acts on the trigger member only with a relatively low operating force .
  • the great distance between the first force receiving element and the coupling lever axis has the consequence that during the first phase of the movement of the trigger member only a relatively small stroke of the valve stem, that is, only a relatively small displacement of the valve stem can be achieved.
  • this relatively small stroke is sufficient to lift the closing body so far from the valve seat of the valve that the pressure of the liquid upstream of the valve seat degrades considerably.
  • the loading of the coupling lever then takes place via the second force-applying element, which has a smaller distance from the coupling lever axis than the first force-receiving element.
  • the smaller distance of the second force-receiving element has the consequence that a greater displacement of the valve stem can be achieved, so that the closing body of the valve can be transferred to the valve seat at a relatively large distance.
  • the distance of the closing body to the valve seat in the open position of the closing body is at least 1 mm, in particular about 2 mm.
  • the valve gun is characterized in such a configuration by a particularly simple handling, since the user only has to exert a relatively low actuation force on the arranged on the back of the handle release member and yet the valve stem can be acted upon with a high opening force.
  • the recoil of the fluid forces the valve gun against the user's palm and thereby aids the actuation of the trigger member, which must be previously manually unlocked by the user, by moving the at least one locking member into the release member unlocking position.
  • the force ratios for actuating the valve gun are influenced in a structurally simple manner by the design of the coupling lever, via which the trigger member is coupled to the valve tappet.
  • the valve stem is acted upon by the actuating element of the coupling lever with the opening force.
  • the distance of the actuating element to the coupling lever axis can be selected low. In particular, it can be provided that the
  • the distance that the actuating element has to the coupling lever axis is approximately one tenth of the distance which the first force-applying element has to the coupling lever axis.
  • the distance of the second force-applying element to the coupling lever axis is favorably about 40% to 80%, in particular about 65% to 75% of the distance, which has the first Kraftbeetzungselement to the coupling lever axis.
  • the trigger member has a first and a second Kraftbeierschlagungselement, wherein the first force receiving element of the coupling lever can be applied to the first Kraftbeierschlagungselement and wherein the second force receiving element of the coupling lever can be applied to the second Kraftbeetzhausungselement. If the trigger member is moved starting from its rest position into its release position, the first force-receiving element of the coupling lever initially contacts the first one Kraftbeaufschlagungselement of the trigger member, so that the coupling lever is pivoted about the coupling lever axis and in this case acts on the valve stem with a large opening force.
  • the second force receiving member of the coupling lever contacts the second Kraftbeaufschlagungselement of the trigger member so that the pivotal movement of the coupling lever is continued, now by the actuating element of the coupling lever a lower opening force is applied to the valve stem, but this by a considerable Way can be shifted.
  • first force-receiving element and the first force-applying element form a first guide surface and a first contact element contacting the first guide surface and movable along the first guide surface
  • second force-receiving element and the second force-applying element form a second guide surface and contacting the second guide surface and form along the second guide surface movable second contact element
  • the angle of inclination of the tangent of the first guide surface at the instantaneous contact point of the first contact element with respect to a aligned parallel to a longitudinal axis of the outlet channel reference line is less than the angle of inclination of the tangent of the second guide surface at the current contact point of the second contact element with respect to the reference line.
  • the first guide surface is formed such that the tangent of the first guide surface at the current contact point at which the first contact element contacts the first guide surface in its movement along the first guide surface is inclined to a reference line.
  • the second guide surface is formed such that the tangent of the second guide surface at the instantaneous contact point at which the second contact element contacts the second guide surface as it moves along the second guide surface is also inclined to the reference line.
  • the angle of inclination between the tangent of the first guide surface and the reference line is less than the inclination angle between the tangent of the second guide surface and the reference line.
  • the reference line is aligned parallel to a longitudinal axis of the outlet channel.
  • the smaller angle of inclination of the tangent of the first guide surface has the consequence that the coupling lever during the first phase of the movement of the trigger member is not pivoted as much as during the second phase of the movement of the trigger member.
  • the trigger member can therefore be moved during the first phase of its movement with relatively little force.
  • During the second phase of the movement of the coupling lever is pivoted more due to the greater inclination angle of the tangent of the second guide surface, so that a considerable stroke of the closing body can be achieved.
  • Decisive for the extent of the pivoting movement of the coupling lever in the first phase of the movement of the trigger member is the inclination angle between the tangent of the first guide surface at the instantaneous contact point of the first contact element and the reference line.
  • the inclination of the tangent of the first guide surface at the instantaneous contact point of the first contact element relative to the reference line may be, for example, about 10 ° to 45 °, in particular about 15 ° to 35 °.
  • the inclination of the tangent of the second guide surface at the instantaneous contact point of the second contact element with respect to the reference line may, for example, be 55 ° to 85 °, in particular 60 ° to 80 °.
  • the first guide surface and / or the second guide surface may be arcuately curved.
  • first guide surface and the second guide surface are planar.
  • the two guide surfaces each form an inclined plane, along which the first contact element or the second contact element move when the trigger element moves.
  • the first guide surface, in combination with the first contact element forms a first wedge gear
  • the second guide surface, in combination with the second contact element forms a second wedge gear.
  • the trigger member is mechanically connected to the coupling lever.
  • the first guide surface and / or the second guide surface are aligned parallel to the coupling lever axis.
  • first guide surface and the second guide surface are arranged on the trigger member and the first contact element and the second contact element are arranged on the coupling lever.
  • first guide surface and the second guide surface on the coupling lever and the first contact element and the second contact element are arranged on the trigger member.
  • first contact element and / or the second contact element are designed as freely rotatable contact rollers.
  • the contact rollers may for example be rotatably mounted on the coupling lever.
  • first guide surface and the second guide surface are arranged on a front side of the trigger member facing the coupling lever.
  • the closing body of the valve is in its open position, it is flowed around by pressurized liquid and expediently additionally acted upon by a closing spring of the valve with a closing force.
  • the user must therefore apply a certain holding force to the trigger member in order to hold the closing body in its open position. This can lead to fatigue of the user. To achieve a particularly simple handling of the valve gun, it is therefore desirable to reduce the required holding force.
  • the second contact element rests in the release position of the trigger member on a support surface, wherein the angle of inclination of the tangent of the support surface based on the above-mentioned reference line is less than the inclination angle of the tangent of the second guide surface at the current contact point of second contact element with respect to the reference line.
  • the second contact element occupies this in the release position of the trigger member a position in a support surface.
  • the inclination of the support surface to the reference line is less than the slope of the tangent of the second guide surface to the reference line. The smaller the angle of inclination of the tangent of the support surface, the lower the holding force that the user must exert on the trigger member.
  • the support surface is conveniently designed just.
  • the second coupling element is arranged on the coupling lever and the support surface is arranged on the trigger member.
  • the support surface is arranged on the end face of the release element facing the coupling lever between the first guide surface and the second guide surface.
  • both the first and the second guide surface and the support surface are arranged on the end face of the trigger member, which faces the coupling lever.
  • the support surface assumes a position between the first guide surface and the second guide surface.
  • Figure 1 a schematic side view of an advantageous embodiment of a valve gun
  • Figure 2 is a sectional view of the valve gun taken along the line 2-2 in Figure 1, wherein a second locking member occupies a locking position;
  • Figure 3 is a sectional view corresponding to Figure 2, wherein the second locking member occupies an unlocking position
  • Figure 4 is a schematic sectional view of the valve gun of Figure 1, wherein a trigger member occupies a rest position;
  • FIG. 5 is a schematic sectional view of the valve gun of FIG. 1,
  • FIG. 6 is a schematic sectional view of the valve gun of FIG. 1,
  • the valve gun 10 comprises a housing 12, which is formed by a first housing shell 14 and a second housing shell 15.
  • the housing 12 has a central housing portion 16, which is arranged between a front housing portion 18 and a rear housing portion 22.
  • the front housing portion 18 receives a valve 20 and from the rear housing portion 22 is a hand gripped by the user handle 24 from.
  • the handle 24 has an upper end portion 25 associated with the thumb and forefinger of the user and adjoining the rear housing portion 22. Facing away from the upper end region 25, the handle 24 has a lower end region 26, from which a protective bracket 28 extends to the front housing region 18.
  • the guard bar 28, the central housing portion 16 and the handle 24 surround a handle opening 30, in which the user can engage when gripping the handle 24 with his fingers.
  • the central housing portion 16 receives a coupling lever 32 and in the handle 24, a movable trigger member is arranged, which is configured in the illustrated advantageous embodiment as a trigger lever 34.
  • the release lever 34 is mounted pivotably about a first pivot axis 36 on the two housing shells and can be adjusted by the user with the palm of a rest position shown in Figures 1 to 4 via an intermediate position shown in Figure 5 in a release shown in Figure 6. Position to be pivoted.
  • the first pivot axis 36 is arranged in the lower end region 26 of the handle 24. In its rest position, the release lever 34 projects with a rear lever region 37 out of the rear side of the handle 24 facing away from the valve 20.
  • the release lever 34 is acted upon by a first return spring 38 with a resilient restoring force.
  • the release lever 34 can be locked in its rest position shown in Figures 1 to 4.
  • a first locking member 39 is arranged on the valve 20 facing the front of the handle 24 and the rear lever portion 37, a second locking member 40 is arranged.
  • the first locking member 39 is configured substantially L-shaped and pivotally mounted about a second pivot axis 41.
  • a first leg 42 of the first locking member 39 forms an actuating arm and projects in the blocking position of the first locking member 39 shown in Figures 1 to 4 from the valve 20 facing the front of the handle 24.
  • a freely rotatable locking roller 45 is arranged, which abuts in the blocking position of the first locking member 39 on the release lever 34 loosely and prevents it from pivoting.
  • the second leg 46 forms a locking arm of the first locking member 39.
  • the second locking member 40 is mounted in an opening 43 of the rear lever portion 37 parallel to the first pivot axis 36 between a blocking position shown in Figure 2 and an unlocking position shown in Figure 3 back and forth. Due to its positioning in the rear lever portion 37, the opening 43 is arranged in the rest position of the release lever 34 behind the handle 24. In the rest position of the release lever 34, therefore, the second locking member 40, which is designed in the manner of a bolt, are moved into the blocking position in which it protrudes with a portion 49 of the opening 43 and rests against a rear edge 47 of the handle 24 , As a result, the release lever 34 is blocked and can not be pivoted from its rest position to its release position.
  • the second locking member 40 To release the release lever 34, the second locking member 40 must be fully inserted into the opening 43, so that the second locking member 40, the back edge 47 of the handle 24 releases. In this unlocking position, the release lever 34 can be pivoted into the release position without being hindered by the second locking member 40.
  • the release lever 34 has, on its end face 52 facing away from the first pivot axis 36, which faces the coupling lever 32, a first force-applying element in the form of a first planar guide surface 54 and a second force-applying element in the form of a second planar guide surface 56, and between the first guide surface 54 and the second guide surface 56, a flat support surface 58 is disposed on the end face 52 of the release lever 34.
  • the coupling lever 32 is pivotable about a coupling lever axis 60.
  • the coupling lever axis 60 is aligned parallel to the first pivot axis 36 and mounted on a valve housing 62 of the valve 20.
  • the coupling lever 32 has an adjustable actuating element 64 in the form of an adjusting screw, which bears against a valve tappet 66.
  • the valve stem 66 is slidably mounted in the valve housing 62 and is located with its end facing away from the actuator 64 to a spherical closure member 68 of the valve 20, which is acted upon by a third return spring 70 with a resilient closing force in the direction of a valve seat 72.
  • the valve housing 62 forms an inlet channel 73 of the valve gun 10 with an inlet 74 and an outlet channel 75 of the valve gun 10 with an outlet 76.
  • the inlet 74 protrudes from a bottom 78 of the front housing portion 18 and the outlet 76 protrudes from a front 80 of the front housing portion 18.
  • a liquid supply line such as a pressure hose, are connected, via which the valve gun 10 pressurized liquid can be supplied.
  • a spray lance can be connected, via which the pressurized liquid can be discharged.
  • the valve seat 72 is disposed in the flow path between the inlet 74 and the outlet 76. If the closing body 68 is in its closed position shown in FIG. 4, it lies tight against the valve seat 72, so that the flow connection between the inlet 74 and the outlet 76 is interrupted. In its closed position, the closing body 68 is acted upon by the pressure of the liquid prevailing upstream of the valve seat 72. By means of the valve stem 66, the closing body 68 can be lifted against the restoring force of the third return spring 70 and against the pressure of the liquid acting on it from the valve seat 72, so that it releases the flow connection between the inlet 74 and the outlet 76. In the process, the fluid pressure prevailing in the closed position of the closing body 68 upstream of the valve seat 72 builds up.
  • the coupling lever 32 has, at its end facing away from the actuating element 68, a first force-receiving element in the form of a first contact element 82, which in the illustrated embodiment is configured as a first contact roller 84 mounted to rotate freely on the coupling lever 32.
  • the coupling lever 32 has on its underside facing the handle 24 a second force receiving element in the form of a second contact element 86, which in the illustrated embodiment is designed as a freely rotatable second contact roller 88 mounted on the coupling lever 32.
  • the distance which the second contact roller 88 has to the coupling lever axis 60 is smaller than the distance that the first contact roller 84 has to the coupling lever axis 60.
  • the distance of the second contact roller 88 to the coupling lever axis 60 is about 40% to 80% of the distance that the first contact roller 84 has to the coupling lever axis 60.
  • the distance between the actuator 64 and the coupling lever axis 60 is preferably about 10% of the distance between the first contact roller 84 and the coupling lever axis 60.
  • the first contact roller 84 bears against the first guide surface 54 of the release lever 34 or occupies a small distance from the first guide surface. If the release lever 34 is pivoted from its rest position about the first pivot axis 36, the first contact roller 84 rolls along the first guide surface 54 until the first contact roller 84 reaches the rear end of the first guide surface 54 facing away from the support surface 58. The region of the first guide surface 54, in which the first contact roller 84 currently contacts the first guide surface 54, forms a momentary first contact point 90.
  • the coupling lever 32 is pivoted about the coupling lever axis 60 so far, that the closing body 68 lifts off from the valve seat 72 and thereby degrades the pressure prevailing upstream of the valve seat 72 of the liquid.
  • first contact roller 84 reaches the rear end of the first guide surface 54 facing away from the valve 20, as shown in FIG. 5, then the second contact roller 88 contacts the front end of the second guide surface 56 facing the valve 20.
  • the second contact roller 88 rolls along the second guide surface 56, wherein the coupling lever 32 further about the coupling lever axis 60th is pivoted and this shifts the valve stem 66, so that the closing body 88 finally assumes a significant distance from the valve seat 72.
  • the first guide surface 54 forms an inclined plane.
  • the first guide surface 54 has a first tangent 94 at the first contact point 90 and the second guide surface 56 has a second tangent 96 at the second contact point 92.
  • the first tangent 94 is inclined by a first inclination angle 102.
  • the second tangent 96 is inclined relative to the reference line 98 by a second inclination angle 104.
  • the first inclination angle 102 is smaller than the second inclination angle 104.
  • first inclination angle 102 10 ° to 45 °, in particular 15 ° to 35 °
  • second inclination angle 104 for example, 55 ° to 85 °, in particular 60th ° to 80 °.
  • the coupling lever 32 during a first phase of the Pivoting movement of the trigger lever 34 is pivoted by a relatively small pivot angle, as long as the first contact roller 84 rolls on the first guide surface 54, and then the coupling lever 32 is pivoted during a second phase of the pivoting movement of the trigger lever 34 by a larger pivot angle, as long as the second contact roller 88 at the second guide surface 56 rolls.
  • the closing body 68 lifts so far from the valve seat 72 that the pressure prevailing upstream of the valve seat 72 of the liquid degrades considerably and then the closing body 68 with a lower opening force on can be moved to its open position by the second contact roller 88 rolls on the second guide surface 56.
  • the coupling lever 32 is supported via the second contact roller 88 on the support surface 58 from.
  • the flat support surface 58 has a third tangent 105, which has a third inclination angle 106 with respect to the reference line 98, which is smaller than the second inclination angle 104. It is favorable if the third inclination angle 106 is about 15 ° to about 40 ° , in particular about 20 ° to about 35 °.
  • valve gun 10 Due to the relatively small inclination of the support surface 58 to the reference line 98, only a relatively small holding force on the release lever 34 must be exerted by the user in order to keep the closing body 68 in its open position.
  • the handling of the valve gun 10 thus designed very simple, in particular, the valve gun 10 can be operated by the user with little force.
  • the handling of the valve gun 10 is also facilitated by the release lever 34 is disposed on the back of the handle 24 facing away from the valve 20, because the valve gun 10 is in the palm of the user under the influence of the recoil of the discharged through the valve outlet 76 liquid pressed, which encompasses the handle 24. Therefore, the user does not have to grasp the handle 24 with his fingers with great effort in order to hold the release lever 34 in its release position.
  • the handling of the valve gun 10 is facilitated by the fact that the first locking member 39 is disposed on the front 76 of the handle 24 facing the outlet.
  • the first leg 42 of the first locking member 39 forms an actuating arm, which can be pivoted so far around the second pivot axis 41 by the user when gripping the handle 24 with the fingers, that the second leg 46, which forms a locking arm, the release lever 34 releases ,
  • the actuation of the trigger lever 34 and the first locking member 39 thus takes place intuitively when grasping the handle 24, without the user having to change the position on the handle 24 to unlock the release lever 34 with his hand.
  • the valve gun 10 still has the second locking member 40. The risk that the release lever 34 is actuated unintentionally, can be kept very low.

Landscapes

  • Mechanically-Actuated Valves (AREA)
  • Nozzles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne un pistolet à valve (10) pour un appareil de nettoyage haute pression. Ce pistolet comprend un canal d'admission (73) pourvu d'une entrée (74) permettant d'amener un liquide sous pression et un canal d'évacuation (75) pourvu d'une sortie (76) permettant de distribuer le liquide, une valve (20) disposée dans la voie d'écoulement entre l'entrée (74) et la sortie (76), un organe de déclenchement (34) pouvant être déplacé manuellement entre une position de repos et une position de libération et permettant d'ouvrir et de fermer la valve (20), un premier organe de blocage (39) pouvant être déplacé manuellement entre une position de blocage et une position de déblocage et permettant de bloquer l'organe de déclenchement (34) dans la position de repos, et une poignée (24) pouvant être enserrée à la main par l'utilisateur et permettant de tenir le pistolet à valve (10). L'objet de l'invention est de perfectionner le pistolet à valve de telle manière qu'il puisse être manipulé plus facilement. A cet effet, selon l'invention, l'organe de déclenchement (34) est disposé sur la face arrière de la poignée (24) opposée à la sortie (76) et le premier organe de blocage (39) est disposé sur la face avant de la poignée (24) tournée vers la sortie (76).
EP13811156.2A 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression Active EP3079832B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HUE13811156A HUE037647T2 (hu) 2013-12-12 2013-12-12 Pisztolyszelep nagynyomású tisztítógéphez

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/076456 WO2015086084A1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression

Publications (2)

Publication Number Publication Date
EP3079832A1 true EP3079832A1 (fr) 2016-10-19
EP3079832B1 EP3079832B1 (fr) 2017-10-25

Family

ID=49841646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13811156.2A Active EP3079832B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression

Country Status (9)

Country Link
US (1) US9993832B2 (fr)
EP (1) EP3079832B1 (fr)
KR (1) KR101859366B1 (fr)
CN (1) CN106232241B (fr)
AU (1) AU2013407398B2 (fr)
DK (1) DK3079832T3 (fr)
HU (1) HUE037647T2 (fr)
RU (1) RU2635234C1 (fr)
WO (1) WO2015086084A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105023B4 (de) 2015-03-31 2023-06-29 Alfred Kärcher SE & Co. KG Spritzpistole für Hochdruckreinigungsgerät
DK3433023T3 (da) * 2016-03-23 2021-05-03 Kaercher Alfred Se & Co Kg Ventilpistol til en højtryksrenser
AU2018202852B2 (en) 2017-04-25 2020-03-26 Fna Group, Inc. Pressure washer safety lock

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DE374952C (de) 1922-07-22 1923-05-03 Alexander Grube Druckluftzerstaeuber
US2079933A (en) 1932-04-21 1937-05-11 Saylor Beall Mfg Company Spray gun
DE690762C (de) 1937-12-23 1940-05-06 Leipziger Tangier Werk Akt Ges Spritzpistole
GB513013A (en) 1938-03-29 1939-10-02 Basil Marven Improvements in or relating to hand-controlled nozzles for the delivery of fluids or powdered material
US2497625A (en) 1944-08-03 1950-02-14 Henrietta M Norwick Spray gun
US2690321A (en) * 1953-04-28 1954-09-28 Stewart Warner Corp Hand valve
GB826699A (en) 1956-02-25 1960-01-20 Waldemar Foerstner Improvements in or relating to regulators for nozzles
US4225087A (en) * 1977-02-22 1980-09-30 The Sherwin-Williams Company Lock-off means for airless sprayer
DE3518492A1 (de) 1985-05-23 1986-11-27 Kopperschmidt-Mueller Gmbh & Co Kg, 4800 Bielefeld Spritzpistole
DE3527922A1 (de) 1985-08-03 1987-02-12 Kaercher Gmbh & Co Alfred Handwerkzeug, insbesondere handspritzpistole fuer hochdruck-reinigungsfluessigkeit
DE3826784C2 (de) * 1988-08-06 1994-01-05 Uraca Pumpen Pistolengriff zur Steuerung von Spritzpistolen
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DE19614663C2 (de) 1996-04-13 2003-11-20 Suttner Gmbh & Co Kg Ventilpistole für ein Wasser-Hochdruckreinigungsgerät
DE10159680C1 (de) 2001-11-30 2003-05-08 Kaercher Gmbh & Co Alfred Schließvorrichtung für die Flüssigkeitsabgabeleitung eines Hochdruckreinigungsgerätes
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EP2165768B1 (fr) 2008-09-17 2012-08-08 Nilfisk-Advance A/S Gâchette haute pression munie d'un mécanisme de transmission de force à simple rapport
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Also Published As

Publication number Publication date
CN106232241B (zh) 2018-12-28
RU2635234C1 (ru) 2017-11-09
US9993832B2 (en) 2018-06-12
EP3079832B1 (fr) 2017-10-25
DK3079832T3 (en) 2018-01-08
KR20160084411A (ko) 2016-07-13
US20160279655A1 (en) 2016-09-29
AU2013407398A1 (en) 2016-06-02
AU2013407398B2 (en) 2017-05-25
KR101859366B1 (ko) 2018-05-21
WO2015086084A1 (fr) 2015-06-18
CN106232241A (zh) 2016-12-14
HUE037647T2 (hu) 2018-09-28

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