EP3450025B1 - Pistolet à valve pour un appareil de nettoyage haute pression - Google Patents

Pistolet à valve pour un appareil de nettoyage haute pression Download PDF

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Publication number
EP3450025B1
EP3450025B1 EP18194904.1A EP18194904A EP3450025B1 EP 3450025 B1 EP3450025 B1 EP 3450025B1 EP 18194904 A EP18194904 A EP 18194904A EP 3450025 B1 EP3450025 B1 EP 3450025B1
Authority
EP
European Patent Office
Prior art keywords
valve
guide surface
lever
accordance
contact element
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.)
Active
Application number
EP18194904.1A
Other languages
German (de)
English (en)
Other versions
EP3450025A1 (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 DK18194904.1T priority Critical patent/DK3450025T3/da
Priority to EP18194904.1A priority patent/EP3450025B1/fr
Publication of EP3450025A1 publication Critical patent/EP3450025A1/fr
Application granted granted Critical
Publication of EP3450025B1 publication Critical patent/EP3450025B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a valve pistol with the features of the preamble of patent claim 1.
  • a pressure hose can be connected to an inlet of the valve and a spray lance, for example, can be connected to an outlet of the valve.
  • Liquid under pressure can be fed to the valve gun via the pressure hose, and the liquid can be directed at an object via the spray lance.
  • the user has the option of pivoting the release lever from a rest position into a release position.
  • the release lever is mechanically coupled to a valve tappet.
  • An opening force can be directed from the valve tappet onto the closing body of the valve, so that the closing body lifts off the valve seat against the pressure of the liquid acting on the closing body in the rest position and thereby releases a flow connection from the inlet of the valve to the outlet of the valve.
  • the force of a return spring usually acts on the closing body, which ensures that the closing body automatically assumes its closed position again after the liquid has been dispensed, provided the user releases the release lever.
  • the second pivot point is at a greater distance from the valve tappet, so that the opening force that can be achieved by the user is lower, but a greater displacement path can now be achieved.
  • the one from the DE 35 18 492 known valve pistol is thus characterized by improved handling, but the provision of two pivot points for the release lever requires considerable structural effort.
  • the EP 0 408 865 A2 a valve pistol is proposed in which the pivoting movement of the release lever is superimposed on a sliding movement.
  • the pivot axis of the release lever is held in an elongated hole and changes its position when the release lever is pivoted.
  • a valve pistol in which an actuating part is slidably mounted in the release lever and can be pivoted between the valve stem and a support roller. In the release position of the release lever, the actuating part is supported on the support roller.
  • a valve pistol in which, in addition to a release lever, a locking lever is used which supports the release lever in the release position of the release lever and thereby reduces the actuating force to be exerted by the user to hold the closing body in the open position.
  • Valve pistols have also been proposed in which the release lever is coupled to the valve stem via a toggle lever ( GB 513 013 A ) or a multi-part lever mechanism ( EP 2 165 768 B1 ) to simplify the handling of the valve pistol.
  • a toggle lever GB 513 013 A
  • a multi-part lever mechanism EP 2 165 768 B1
  • a valve pistol in which the actuating force required to open the valve is reduced in that a piston, on which the pressure of the liquid prevailing upstream of the valve seat acts, rests on the release lever.
  • the piston is slidable and sealed in a channel.
  • a valve pistol with the features of the preamble of claim 1 is known.
  • a release lever is coupled to a valve tappet via a coupling lever.
  • the coupling lever has an actuating element via which the valve tappet can be acted upon with an opening force.
  • the coupling lever has a first and a second force absorbing element.
  • the first force receiving element is formed by a first elbow and the second force receiving element is formed by a second elbow.
  • the two knee pieces are each pivotably mounted on the coupling lever. With their ends facing away from the coupling lever, the two knee pieces are each movably supported in a slot in the release lever.
  • the first elbow When swiveling the Release lever from the rest position to the release position, the first elbow rests stationary on a first end of the first slot and a first release force is transmitted via the first elbow to the coupling lever, while at the same time the second elbow is moved within the second slot. As the release lever continues to move, the second elbow comes to rest on one end of the associated second slot, so that a second release force is transmitted to the coupling lever via the second elbow, and at the same time the first elbow moves within the associated first slot.
  • the object of the present invention is to develop a valve pistol of the type mentioned at the outset in such a way that it has a simple structural design, simple handling and low susceptibility to failure.
  • the release lever is coupled to the valve tappet via a coupling lever which is pivotably mounted about a second pivot axis.
  • the coupling lever has an actuating element via which the valve tappet can be subjected to the opening force. In order to pivot the coupling lever about the second pivot axis, it can be acted upon with a release force.
  • the coupling lever has a first force receiving element and a second force receiving element. The first force receiving element is arranged at a greater distance from the second pivot axis than the second force receiving element.
  • the coupling lever is first subjected to a release force via the first force receiving element and when the release lever is pivoted further, the coupling lever is subjected to a release force via the second force receiving element.
  • the lever ratios of the coupling lever change. In a first phase Due to the favorable lever ratio resulting from the large distance between the first force-absorbing element and the second pivot axis, a large opening force can be exerted on the valve tappet even if the user only applies a relatively low actuating force to the release lever.
  • the large distance between the first force-absorbing element and the second pivot axis means that only a small stroke of the valve tappet, i.e. only a relatively small displacement path of the valve tappet, can be achieved during the first phase of the pivoting movement of the release lever.
  • this relatively small stroke is sufficient to lift the closing body from the valve seat of the valve to such an extent that the pressure of the liquid is reduced considerably upstream of the valve seat.
  • the coupling lever is then acted on via the second force receiving element, which is at a smaller distance from the second pivot axis than the first force receiving element.
  • the smaller distance between the second force-absorbing element has the consequence that a greater displacement path of the valve tappet can be achieved, so that the closing body of the valve can be moved at a relatively large distance from the valve seat.
  • the distance between the closing body and the valve seat in the open position of the closing body is advantageously at least 1 mm. As a result, flow losses of the liquid can be kept low.
  • the valve pistol according to the invention is characterized by simple handling, since the user only has to exert a relatively low actuating force on the release lever and a high opening force can still be applied to the valve stem.
  • the force relationships are determined in a structurally simple manner by the design of the coupling lever via which the release lever is coupled to the valve tappet.
  • the opening force is applied to the valve tappet by the coupling lever via its actuating element.
  • the distance between the actuating element and the second pivot axis can be small. In particular, it can be provided that the distance between the actuating element and the second Has pivot axis, is about a tenth of the distance that the first force receiving element has to the second pivot axis.
  • the distance between the second force receiving element and the second pivot axis is advantageously approximately 40% to 80%, in particular approximately 65% to 75%, of the distance between the first force receiving element and the second pivot axis.
  • the release lever has a first and a second force application element, wherein the first force absorption element of the coupling lever can be applied to the first force application element of the release lever and wherein the second force absorption element of the coupling lever can be applied to the second force application element of the release lever. If the release lever is pivoted from its rest position into its release position, the first force-absorbing element of the coupling lever first contacts the first force application element of the release lever, so that the coupling lever is pivoted about the second pivot axis, thereby applying a large opening force to the valve tappet.
  • the second force-absorbing element of the coupling lever contacts the second force-applying element of the release lever, so that the pivoting movement of the coupling lever is continued, with the actuating element of the coupling lever now exerting a lower opening force on the valve tappet, but this by a considerable one Can be moved away.
  • the 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
  • the second force receiving element and the second force applying element form a second guide surface and one contacting the second guide surface and along the second Guide surface movable second contact element.
  • the angle of inclination of the tangent of the first guide surface at the current contact point of the first contact element is based on a perpendicular to a connecting line between The first reference line aligned with the current contact point of the first contact element and the first pivot axis 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 relative to a second reference line aligned perpendicular to a connecting line between the current contact point of the second contact element and the first pivot axis .
  • the first contact element When the release lever is pivoted from the rest position into the release position, the first contact element first moves along the first guide surface, the first contact element making contact with the first guide surface, and then the second contact element moves along the second guide surface, the second contact element making contact with the second guide surface .
  • the first guide surface is designed 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 when it moves along the first guide surface is inclined to a first reference line.
  • the second guide surface is designed such that the tangent of the second guide surface is inclined to a second reference line at the current contact point at which the second contact element contacts the second guide surface when it moves along the second guide surface.
  • the angle of inclination between the tangent of the first guide surface and the first reference line is less than the angle of inclination between the tangent of the second guide surface and the second reference line.
  • the first reference line is aligned perpendicular to a connecting line which connects the current contact point of the first contact element with the first pivot axis.
  • the second reference line is aligned perpendicular to a connecting line which connects the current contact point of the second contact element with the first pivot axis.
  • the second contact element moves along the second guide surface and over the second guide surface, and the second contact element transmits a second release force from the release lever to the coupling lever.
  • the smaller angle of inclination of the tangent of the first guide surface has the consequence that the coupling lever is only slightly moved during the first phase of the pivoting movement of the release lever.
  • the release lever can therefore be pivoted against the coupling lever with relatively little force during the first phase of its pivoting movement.
  • the coupling lever is moved more strongly due to the greater angle of inclination of the tangent of the second guide surface, so that a considerable stroke of the closing body can be achieved.
  • the angle of inclination between the tangent of the first guide surface at the momentary contact point of the first contact element and the first reference line is decisive for the extent of the movement of the coupling lever in the first phase of the pivoting movement of the release lever. At an angle of inclination of 0 °, a pivoting movement of the release lever would not result in any movement of the coupling lever. The larger the angle of inclination, the greater the amount of movement of the coupling lever.
  • the inclination of the tangent of the first guide surface at the instantaneous contact point of the first contact element with respect to the first reference line can be, for example, approximately 10 ° to 40 °, in particular approximately 15 ° to 30 °.
  • the inclination of the tangent of the second guide surface at the current contact point of the second contact element in relation to the second reference line can be, for example, 40 ° to 70 °, in particular 45 ° to 65 °.
  • the first guide surface and / or the second guide surface can be curved, in particular curved in an arc shape.
  • the first guide surface and the second guide surface are flat.
  • the two guide surfaces each form an inclined plane along which the first contact element and the second contact element move when the release lever is pivoted.
  • the first guide surface forms a first wedge gear in combination with the first contact element and the second guide surface forms a second wedge gear in combination with the second contact element.
  • the release lever is mechanically connected to the coupling lever via the two wedge gears.
  • the first guide surface and / or the second guide surface are preferably aligned parallel to the second pivot axis.
  • first guide surface and the second guide surface are arranged on the release lever and the first contact element and the second contact element are arranged on the coupling lever.
  • first guide surface and the second guide surface are arranged on the coupling lever and the first contact element and the second contact element are arranged on the release lever.
  • the first contact element and / or the second contact element are designed as freely rotatable contact rollers.
  • the contact rollers can, for example, be rotatably mounted on the coupling lever.
  • the first guide surface and the second guide surface are arranged on a side of the release lever facing the coupling lever.
  • the first and the second guide surface are advantageously arranged on an end face of the release lever facing away from the first pivot axis.
  • closing body of the valve If the closing body of the valve is in its open position, pressurized fluid flows around it and a closing force is advantageously also applied to it by a closing spring of the valve.
  • the user must therefore apply a certain holding force to the release lever in order to hold the closing body in its open position. This can lead to user fatigue. To achieve improved handling of the valve gun, it is desirable to reduce the holding force required.
  • an advantageous embodiment of the invention provides that the second contact element rests against a support surface in the release position of the release lever, the angle of inclination of the tangent of the support surface being smaller relative to a third reference line oriented perpendicular to a connecting line between the support surface and the first pivot axis as the angle of inclination of the tangent of the second guide surface at the current contact point of the second contact element in relation to the second reference line.
  • the angle of inclination of the tangent of the second guide surface preferably has a relatively large value in relation to the second reference line, in particular a value of at least approximately 45 °. If the closing body reaches its open position at the end of the pivoting movement of the release lever, a further displacement movement of the valve stem is no longer necessary and the closing body can then be held in its open position.
  • the second contact element can assume a position on a support surface in the release position of the release lever.
  • the inclination of the support surface to a third reference line is less than the inclination of the tangent of the second guide surface to the second reference line.
  • the third reference line is aligned perpendicular to a connection line that connects the support surface with the first pivot axis.
  • the angle of inclination of the tangent of the support surface with respect to the third reference line is approximately 1 ° to approximately 20 °, in particular approximately 5 ° to 15 °.
  • the support surface is expediently designed to be flat.
  • the second coupling element is preferably arranged on the coupling lever and the support surface is arranged on the release lever.
  • the support surface is arranged on the side of the release lever facing the coupling lever.
  • the support surface is arranged 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 side of the release lever that faces the coupling lever.
  • the support surface here assumes a position between the first guide surface and the second guide surface.
  • the coupling lever is designed in a straight line.
  • the coupling lever is L-shaped.
  • valve has a valve inlet and a valve outlet, the valve outlet protruding from a front side of the housing of the valve pistol, and that the housing can be grasped by the user with the hand Has handle, wherein the release lever protrudes in its rest position from a back of the handle facing away from the valve outlet.
  • the user can actuate the release lever with his palm. If liquid under pressure is dispensed from the valve gun, the liquid exerts a recoil on the valve gun.
  • the positioning of the trigger lever on the rear of the handle facing away from the valve outlet has the consequence that the valve pistol is pressed against the ball of the hand of the user under the influence of the recoil of the liquid.
  • the ball of the hand of the user thus acts in the manner of an abutment on which the valve pistol is supported. The user's fingers are thus relieved.
  • the handle protrudes from a central or rear region of the housing of the valve pistol and the first pivot axis in one the end region of the handle facing away from the central or rear region of the housing is arranged.
  • the central housing area favorably at least partially accommodates the coupling lever via which the release lever is coupled to the valve tappet.
  • the housing of the valve pistol is advantageously formed by two housing shells on which the coupling lever and / or the release lever are pivotably mounted.
  • the coupling lever is pivotably mounted on a valve housing of the valve.
  • the valve pistol has at least one locking member that can be moved back and forth between a first position and a second position, the release lever of the at least one locking member in can be locked in the first position and released in the second position.
  • the valve pistol preferably has a first and a second locking element, which can each be moved back and forth between a first position and a second position.
  • At least one locking member is movably mounted, in particular displaceably or pivotably, on a handle of the housing that can be grasped by the user with his hand.
  • a locking member in the first position protrudes from a front side of the handle facing the valve outlet. If the user grasps the handle of the housing with his hand, so can he intuitively move the locking member located on the front of the handle from the first position to the second position, so that the user can then pivot the release lever from the rest position into the release position in order to dispense pressurized liquid via the valve outlet.
  • a locking member is movably, in particular displaceably, mounted on a region of the release lever protruding from the handle in the rest position of the release lever, the locking member protruding in its first position from the release lever and completely in the second position Release lever dips.
  • the locking member In its first position, the locking member blocks a movement of the release lever in the direction of the handle and in the second position of the locking member, the release lever can be moved in the direction of the handle.
  • the locking member can for example be mounted on the release lever so as to be displaceable parallel to the first pivot axis. In its area protruding from the handle in the rest position, the release lever preferably has an opening in which the locking member is displaceably mounted.
  • 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 area 16 which is arranged between a front housing area 18 and a rear housing area 22.
  • the front housing area 18 accommodates a valve 20 and a handle 24 projects from the rear housing area 22, from the free end area 26 of which a protective bracket 28 extends to the front housing area 18.
  • the protective bracket 28, the central housing area 16 and the handle 24 surround a handle opening 30 into which the user can reach with his fingers when grasping the handle 24.
  • the central housing area 16 receives a substantially straight coupling lever 32 and a release lever 34 is arranged in the handle 24.
  • the release lever 34 is mounted on the two housing shells so as to be pivotable about a first pivot axis 36 and can be moved into the Figures 1 to 4 shown rest position via an in Figure 5 intermediate position shown in an in Figure 6 shown release position are pivoted.
  • the first pivot axis 36 is arranged in the free end region 26 of the handle 24. In its rest position, the release lever 34 protrudes with a rear lever area 37 from 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 return force.
  • the release lever 34 can in its in the Figures 1 to 4 are locked in the rest position shown.
  • a substantially L-shaped first locking member 40 is pivotably mounted on the handle 24 and a bolt-like second locking member 41 is mounted in the rear lever area 37 so as to be displaceable parallel to the first pivot axis 36.
  • a first leg 42 of the first locking member 40 protrudes into the Figures 1 to 4 shown first position of the first locking member 40 out of the valve 20 facing front of the handle 24 and a free end 44 of a second leg 46 of the first locking member 40 is in the first position of the first locking member 40 on the release lever 34 and prevents this from pivoting .
  • the second locking member 41 is in a through opening 43 parallel to the first pivot axis 36 between a in Figure 2 first position shown and one in Figure 3 second position shown supported back and forth displaceable.
  • the through opening 43 is arranged in the rear lever area 37 of the release lever 34 and thus protrudes from the rear of the handle 24 in the rest position of the release lever 34.
  • the second locking member 41 which is designed in the manner of a bolt, can be moved into the first position, in which a partial area 45 protrudes from the through opening 43 and rests against a rear edge 47 of the handle 24.
  • the release lever 34 is blocked and cannot be pivoted from its rest position into its release position.
  • the second locking member 41 has to be pushed completely into the through opening 43 so that the second locking member 41 releases the rear edge 47 of the handle 24. In this second position, the release lever 34 can then be pivoted into the release position without being hindered by the second locking member 41.
  • the release lever 34 has, on its end face 52 facing away from the first pivot axis 36 and facing the coupling lever 32, a first force application element in the form of a first flat guide surface 54 and a second force application element in the form of a second flat guide surface 56, and between the first guide surface 54 and a flat support surface 58 is arranged on the end face 52 of the release lever 34 on the second guide surface 56.
  • the coupling lever 32 can be pivoted about a second pivot axis 60 in the housing 12.
  • the second pivot axis 60 is aligned parallel to the first pivot axis 36 and is mounted on a valve housing 62 of the valve 20.
  • the coupling lever 32 has an adjustable actuating element 64 which rests on a valve tappet 66.
  • the valve tappet 66 is slidably mounted in the valve housing 62 and its end facing away from the actuating element 64 rests on a spherical closing body 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 has a valve inlet 74 and a valve outlet 76.
  • the valve inlet 74 protrudes from an underside 78 of the front housing area 18 and the valve outlet 76 protrudes from a front side 80 of the front housing area 18.
  • a liquid supply line for example a pressure hose, can be connected to the valve inlet 74, via which liquid under pressure can be supplied to the valve gun 10.
  • a spray lance for example, via which the pressurized liquid can be dispensed, can be connected to the valve outlet 76.
  • the valve seat 72 is arranged in the flow path between the valve inlet 74 and the valve outlet 76.
  • the closing body 68 is in its in Figure 1 In the closed position shown, it rests tightly on the valve seat 72, so that the flow connection between the valve inlet 74 and the valve 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.
  • the closing body 68 can be lifted from the valve seat 72 against the restoring force of the third restoring spring 70 and against the pressure of the liquid acting on it, so that it releases the flow connection between the valve inlet 74 and the valve outlet 76. This builds up in the closed position of the closing body 68 upstream of the valve seat 72 from the prevailing liquid pressure.
  • the coupling lever 32 has a first force-absorbing element in the form of a first contact element 82 which, in the embodiment shown, is designed as a first contact roller 84 freely rotatably mounted on the coupling lever 32.
  • the coupling lever 32 has, on its underside facing the handle 24, a second force-absorbing element in the form of a second contact element 86, which in the embodiment shown is designed as a second contact roller 88 freely rotatably mounted on the coupling lever 32.
  • the distance between the second contact roller 88 and the second pivot axis 60 is smaller than the distance between the first contact roller 84 and the second pivot axis 60.
  • the distance between the second contact roller 88 and the second pivot axis 60 is advantageously approximately 40% to 80% of the distance between the first contact roller 84 and the second pivot axis 60.
  • the distance between the actuating element 64 and the second pivot axis 60 is preferably approximately 10% of the distance between the first contact roller 84 and the second pivot axis 60.
  • the first contact roller 84 can rest against the first guide surface 54 of the release lever 34.
  • the region of the first guide surface 54 in which the first contact roller 84 momentarily contacts the first guide surface 54 forms a momentary first contact point 90.
  • the release lever 34 If the release lever 34 is pivoted about the first pivot axis 36 starting from its rest position, 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. With the Changing the position of the first contact roller 84 also changes the position of the current first contact point 90. During this first phase of the pivoting movement of the release lever 34, the coupling lever 32 is pivoted about the second pivot axis 60 so far that the closing body 68 lifts off the valve seat 72 and moves as a result, the pressure of the liquid prevailing upstream of the valve seat 72 is reduced.
  • the second contact roller 88 makes contact with the front end of the second guide surface 56 facing the valve 20.
  • the region of the second guide surface 56 in which the second contact roller 88 momentarily contacts the second guide surface 56 forms a momentary second contact point 92 Pivoting the release lever 34 into its release position, the second contact roller 88 rolls along the second guide surface 56, the coupling lever 32 being pivoted further about the second pivot axis 60 and thereby displacing the valve tappet 66, so that the closing body 68 finally has a significant distance from the valve seat 72 occupies.
  • 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.
  • first reference line 98 which is oriented perpendicular to a first connecting line 100 which connects the first contact point 90 to the first pivot axis 36
  • first tangent 94 is inclined by a first angle of inclination 102.
  • the second tangent 96 is related to a second reference line 104, which is oriented perpendicular to a second connecting line 106 connecting the second contact point 92 to the first pivot axis 36, inclined by a second angle of inclination 108.
  • the first angle of inclination 102 is significantly smaller than the second angle of inclination 108.
  • the first angle of inclination is 10 ° to 40 °, in particular 15 ° to 30 °
  • the second angle of inclination is, for example, 40 ° to 70 °, in particular 45 ° up to 65 °.
  • the coupling lever 32 is pivoted by a relatively small pivot angle during a first phase of the pivoting movement of the release lever 34 as long as the first contact roller 84 rolls on the first guide surface 54, and then the Coupling lever 32 is pivoted by a larger pivot angle during a second phase of the pivoting movement of the release lever 34 as long as the second contact roller 88 rolls on the second guide surface 56.
  • the greater distance between the first contact roller 84 and the second pivot axis 60, in combination with the smaller angle of inclination 102, means that the user only has to exert a relatively small actuating force on the release lever 34 to open the valve 20. This facilitates the handling of the valve pistol 10.
  • the closing body 68 lifts so far from the valve seat 72 that the pressure of the liquid upstream of the valve seat 72 is reduced considerably and then the closing body 68 continues with a lower opening force can be moved into its open position by the second contact roller 88 rolling on the second guide surface 56.
  • the release position shown in which the closing body 68 assumes its open position, the coupling lever 32 is supported on the support surface 58 via the second contact roller 88.
  • the flat support surface 58 has a third tangent 110, which has a third angle of inclination 114 in relation to a third reference line 112, which is smaller than the second angle of inclination 108 connects to the first pivot axis 36.
  • the third angle of inclination 114 is preferably smaller than the first angle of inclination 102. It is favorable if the third angle of inclination 114 is approximately 1 ° to approximately 20 °, in particular approximately 5 ° to 15 °.
  • valve pistol 10 Due to the relatively small inclination of the support surface 58 to the third reference line 112, the user only needs to exert a relatively small holding force on the release lever 34 in order to hold the closing body 68 in its open position.
  • the handling of the valve pistol 10 is thus very simple; in particular, the valve pistol 10 can be actuated by the user with little force.

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

Claims (22)

  1. Pistolet à valve pour un appareil de nettoyage haute pression, avec un boîtier (12) et une valve (20), agencée dans le boîtier (12), qui présente un corps de fermeture (68), qui, dans une position fermée, s'applique de manière étanche contre un siège de valve (72) et peut être soumis à une force d'ouverture par un poussoir de valve (66) pour faire coulisser le corps de fermeture (68) dans une position ouverte espacée du siège de valve (72), et avec un levier de déclenchement (34), monté de manière à pouvoir pivoter autour d'un premier axe de pivotement (36), qui est accouplé mécaniquement au poussoir de valve (66) et qui peut pivoter manuellement d'une position de repos, dans laquelle le corps de fermeture (68) occupe sa position fermée, dans une position de libération, dans laquelle le corps de fermeture (68) occupe sa position ouverte, dans lequel le levier de déclenchement (34) est accouplé au poussoir de valve (66) par l'intermédiaire d'un levier d'accouplement (32) monté de manière à pouvoir pivoter autour d'un deuxième axe de pivotement (60), dans lequel le levier d'accouplement (32) présente un élément d'actionnement (64), par l'intermédiaire duquel le poussoir de valve (66) peut être soumis à la force d'ouverture, et dans lequel le levier d'accouplement (32) présente un premier et un deuxième élément de réception de force, dans lequel, lors du pivotement du levier de déclenchement (34) de la position de repos dans la position de libération, tout d'abord le premier élément de réception de force puis le deuxième élément de réception de force sont soumis à une force de déclenchement, dans lequel le premier élément de réception de force présente un écart par rapport au deuxième axe de pivotement (60) plus grand que le deuxième élément de réception de force, dans lequel le levier de déclenchement (34) présente un premier et un deuxième élément de soumission à une force, dans lequel le premier élément de réception de force peut être appliqué contre le premier élément de soumission à une force et dans lequel le deuxième élément de réception de force peut être appliqué contre le deuxième élément de soumission à une force, dans lequel le premier élément de réception de force et le premier élément de soumission à une force réalisent une première surface de guidage (54) et un premier élément de contact (82) en contact avec la première surface de guidage (54) et mobile le long de la première surface de guidage (54), et dans lequel le deuxième élément de réception de force et le deuxième élément de soumission à une force réalisent une deuxième surface de guidage (56) et un deuxième élément de contact (86) en contact avec la deuxième surface de guidage (56) et mobile le long de la deuxième surface de guidage (56), caractérisé en ce que l'angle d'inclinaison (102) de la tangente (94) de la première surface de guidage (54) au point de contact momentané (90) du premier élément de contact (82), par rapport à une première ligne de référence (98) orientée perpendiculairement à une ligne de liaison (100) entre le point de contact momentané (90) du premier élément de contact (82) et le premier axe de pivotement (36), est inférieur à l'angle d'inclinaison (108) de la tangente (96) de la deuxième surface de guidage (56) au point de contact momentané (92) du deuxième élément de contact (86) par rapport à une deuxième ligne de référence (104) orientée perpendiculairement à une ligne de liaison (106) entre le point de contact momentané (92) du deuxième élément de contact (86) et le premier axe de pivotement (36), dans lequel, lors du pivotement du levier de déclenchement (34) de la position de repos dans la position de libération, tout d'abord le premier élément de contact (82) se déplace le long de la première surface de guidage (54), dans lequel le premier élément de contact (82) est en contact avec la première surface de guidage (54) et une première force de déclenchement est transmise par le levier de déclenchement (34) sur le levier d'accouplement (32) par l'intermédiaire de la première surface de guidage (54) et du premier élément de contact (82), et ensuite le deuxième élément de contact (86) se déplace le long de la deuxième surface de guidage (56), dans lequel le deuxième élément de contact (86) est en contact avec la deuxième surface de guidage (56) et une deuxième force de déclenchement est transmise sur le levier d'accouplement (32) par l'intermédiaire de la deuxième surface de guidage (56) et du deuxième élément de contact (86).
  2. Pistolet à valve selon la revendication 1, caractérisé en ce que la première surface de guidage (54) et la deuxième surface de guidage (56) sont plates.
  3. Pistolet à valve selon la revendication 2, caractérisé en ce que la première surface de guidage (54) et/ou la deuxième surface de guidage (56) sont orientées parallèlement au deuxième axe de pivotement (60).
  4. Pistolet à valve selon l'une des revendications 1 à 3, caractérisé en ce que la première surface de guidage (54) et la deuxième surface de guidage (56) sont agencées sur le levier de déclenchement (34) et que le premier élément de contact (82) et le deuxième élément de contact (86) sont agencés sur le levier d'accouplement (32).
  5. Pistolet à valve selon l'une des revendications 1 à 4, caractérisé en ce que le premier élément de contact (82) et/ou le deuxième élément de contact (86) sont réalisés sous la forme de rouleaux de contact (84, 88) librement rotatifs.
  6. Pistolet à valve selon l'une des revendications 1 à 5, caractérisé en ce que la première surface de guidage (54) et la deuxième surface de guidage (56) sont agencées sur une face (52) du levier de déclenchement (34) tournée vers le levier d'accouplement (32).
  7. Pistolet à valve selon la revendication 6, caractérisé en ce que la première surface de guidage (54) et la deuxième surface de guidage (56) sont agencées sur une face frontale (52) du levier de déclenchement (34) opposée au premier axe de pivotement (36).
  8. Pistolet à valve selon l'une des revendications 1 à 7, caractérisé en ce que le deuxième élément de contact (86), dans la position de libération du levier de déclenchement (34), s'applique contre une surface d'appui (58), dans lequel l'angle d'inclinaison (114) de la tangente (110) de la surface d'appui (58), par rapport à une troisième ligne de référence (112) orientée perpendiculairement à une ligne de liaison (116) entre la surface d'appui (58) et le premier axe de pivotement (36), est inférieur à l'angle d'inclinaison (108) de la tangente (96) de la deuxième surface de guidage (56) au point de contact momentané du deuxième élément de contact (86) par rapport à la deuxième ligne de référence (104).
  9. Pistolet à valve selon la revendication 8, caractérisé en ce que l'angle d'inclinaison (114) de la tangente (110) de la surface d'appui (58) par rapport à la troisième ligne de référence (112) atteint 1° à 20°, en particulier 5 à 15°.
  10. Pistolet à valve selon la revendication 8 ou 9, caractérisé en ce que la surface d'appui (58) est plate.
  11. Pistolet à valve selon la revendication 8, 9 ou 10, caractérisé en ce que la surface d'appui (58) est agencée sur la face (52) du levier de déclenchement (34) tournée vers le levier d'accouplement (32).
  12. Pistolet à valve selon la revendication 11, caractérisé en ce que la surface d'appui (58) est agencée entre la première surface de guidage (54) et la deuxième surface de guidage (56).
  13. Pistolet à valve selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier d'accouplement (32) est rectiligne ou en forme de L.
  14. Pistolet à valve selon l'une quelconque des revendications précédentes, caractérisé en ce que la valve (20) présente une entrée de valve (74) et une sortie de valve (76), dans lequel la sortie de valve (76) fait saillie d'une face avant (80) du boîtier (12), et que le boîtier (12) présente une poignée (24) pouvant être enserrée par la main de l'utilisateur, dans lequel le levier de déclenchement (34), dans sa position de repos, fait saillie d'une face arrière, opposée à la sortie de valve (76), de la poignée (24).
  15. Pistolet à valve selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier (12) présente une poignée (24) pouvant être enserrée par la main de l'utilisateur, qui fait saillie d'une zone centrale ou arrière (16, 22) du boîtier (12), et que le premier axe de pivotement (36) est agencé dans une zone d'extrémité (26), opposée à la zone centrale ou arrière (16, 22) du boîtier (12), de la poignée (24).
  16. Pistolet à valve selon la revendication 15, caractérisé en ce que le levier d'accouplement (32) est agencé au moins en partie dans la zone centrale (16) du boîtier (12).
  17. Pistolet à valve selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier d'accouplement (32) est monté pivotant sur un boîtier (62) de la valve (20).
  18. Pistolet à valve selon l'une quelconque des revendications précédentes, caractérisé en ce que le pistolet à valve (10) présente au moins un organe d'arrêt (40, 41) pouvant être animé d'un mouvement de va-et-vient entre une première position et une deuxième position, dans lequel le levier de déclenchement (34) peut être arrêté dans la première position et peut être libéré dans la deuxième position par l'au moins un organe d'arrêt (40, 41).
  19. Pistolet à valve selon la revendication 18, caractérisé en ce que le pistolet à valve (10) comprend un premier et un deuxième organe d'arrêt (40, 41), qui peuvent être animés d'un mouvement de va-et-vient respectivement entre une première position et une deuxième position.
  20. Pistolet à valve selon la revendication 18 ou 19, caractérisé en ce qu'au moins un organe d'arrêt (40) est monté mobile sur une poignée (24) du boîtier (12) pouvant être enserrée par la main de l'utilisateur.
  21. Pistolet à valve selon l'une des revendications 18 à 20, caractérisé en ce qu'un organe d'arrêt (40), dans la première position, fait saillie d'une face avant, tournée vers une sortie (76) de la valve (20), de la poignée (24).
  22. Pistolet à valve selon l'une des revendications 18 à 21, caractérisé en ce qu'un organe d'arrêt (41) est monté mobile sur une zone (37), faisant saillie de la poignée (24) dans la position de repos du levier de déclenchement (34), du levier de déclenchement (34), dans lequel l'organe d'arrêt (41), dans sa première position, fait saillie du levier de déclenchement (34) et, dans sa deuxième position, s'enfonce entièrement dans le levier de déclenchement (34).
EP18194904.1A 2013-12-12 2013-12-12 Pistolet à valve pour un appareil de nettoyage haute pression Active EP3450025B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK18194904.1T DK3450025T3 (da) 2013-12-12 2013-12-12 Ventilpistol til en højtryksrenser
EP18194904.1A EP3450025B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour un appareil de nettoyage haute pression

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13815707.8A EP3079833B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression
PCT/EP2013/076457 WO2015086085A1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression
EP18194904.1A EP3450025B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour un appareil de nettoyage haute pression

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP13815707.8A Division EP3079833B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression

Publications (2)

Publication Number Publication Date
EP3450025A1 EP3450025A1 (fr) 2019-03-06
EP3450025B1 true EP3450025B1 (fr) 2020-08-12

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Application Number Title Priority Date Filing Date
EP13815707.8A Active EP3079833B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression
EP18194904.1A Active EP3450025B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour un appareil de nettoyage haute pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13815707.8A Active EP3079833B1 (fr) 2013-12-12 2013-12-12 Pistolet à valve pour appareil de nettoyage haute pression

Country Status (5)

Country Link
US (1) US20160288148A1 (fr)
EP (2) EP3079833B1 (fr)
CN (1) CN105813763B (fr)
DK (2) DK3450025T3 (fr)
WO (1) WO2015086085A1 (fr)

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DE202016101594U1 (de) 2016-03-23 2016-05-13 Alfred Kärcher Gmbh & Co. Kg Ventilpistole für ein Hochdruckreinigungsgerät
DK3433023T3 (da) 2016-03-23 2021-05-03 Kaercher Alfred Se & Co Kg Ventilpistol til en højtryksrenser
DK3442713T3 (da) * 2016-04-15 2020-09-21 Kaercher Alfred Se & Co Kg Ventilindretning og ventilpistol til en højtryksrenser
WO2017178073A1 (fr) 2016-04-15 2017-10-19 Alfred Kärcher Gmbh & Co. Kg Pistolet à soupape pour nettoyeur haute pression
CN109070105A (zh) * 2016-04-15 2018-12-21 阿尔弗雷德·卡赫欧洲两合公司 用于高压清洁设备的阀枪
WO2017194171A1 (fr) 2016-05-13 2017-11-16 Alfred Kärcher Gmbh & Co. Kg Pistolet à soupape pour nettoyeur haute pression
DE202016102597U1 (de) 2016-05-13 2016-06-10 Alfred Kärcher Gmbh & Co. Kg Ventilpistole für Hochdruckreinigungsgerät
DE202016102598U1 (de) 2016-05-13 2016-06-13 Alfred Kärcher Gmbh & Co. Kg Ventilpistole für ein Hochdruckreinigungsgerät
CN109070107B (zh) * 2016-05-13 2021-05-11 阿尔弗雷德·卡赫欧洲两合公司 用于高压清洁器的阀枪
EP3858489B1 (fr) * 2016-09-14 2023-06-14 Graco Minnesota Inc. Engagement de piston-soupape dans des pulvérisateurs de fluide
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Also Published As

Publication number Publication date
DK3450025T3 (da) 2020-10-26
CN105813763A (zh) 2016-07-27
DK3079833T3 (en) 2018-12-17
EP3079833A1 (fr) 2016-10-19
WO2015086085A9 (fr) 2018-05-11
EP3450025A1 (fr) 2019-03-06
CN105813763B (zh) 2018-11-13
EP3079833B1 (fr) 2018-09-26
WO2015086085A1 (fr) 2015-06-18
US20160288148A1 (en) 2016-10-06

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