EP3079833A1 - Ventilpistole für ein hochdruckreinigungsgerät - Google Patents
Ventilpistole für ein hochdruckreinigungsgerätInfo
- Publication number
- EP3079833A1 EP3079833A1 EP13815707.8A EP13815707A EP3079833A1 EP 3079833 A1 EP3079833 A1 EP 3079833A1 EP 13815707 A EP13815707 A EP 13815707A EP 3079833 A1 EP3079833 A1 EP 3079833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- force
- guide surface
- lever
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 4
- 230000008878 coupling Effects 0.000 claims abstract description 83
- 238000010168 coupling process Methods 0.000 claims abstract description 83
- 238000005859 coupling reaction Methods 0.000 claims abstract description 83
- 238000010521 absorption reaction Methods 0.000 abstract 5
- 230000007257 malfunction Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 20
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 208000031872 Body Remains Diseases 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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 gun for a high-pressure cleaner, comprising a housing and a valve disposed in the housing, the one
- Has closing body which bears tightly in a closed position on a valve seat and can be acted upon by a valve stem with an opening force for moving the closing body in a valve seat spaced open position, and with a first pivot axis about a pivotally mounted release lever, which is mechanically coupled to the valve stem and manually from a rest position in which the closing body assumes its closed position, is pivotable in a release position in which the closing body assumes its open position.
- a pressure hose can be connected to an inlet of the valve and, for example, a spray lance can be connected to an outlet of the valve.
- a pressure hose of the valve gun pressurized liquid can be supplied, and the spray lance, the liquid can be directed to an object.
- the user has the ability to pivot the release lever from a rest position to a release position.
- the release lever is mechanically coupled to a valve lifter.
- an opening force can be directed to the closing body of the valve, so that the closing body lifts against the force acting in the rest position on the closure body pressure of the liquid from the valve seat and thereby releases a flow connection from the inlet of the valve to the outlet of the valve.
- the closing body usually the force of a return spring, which ensures that after the delivery of liquid, the closing body automatically his
- a valve gun is proposed in EP 0 408 865 A2, 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 a slot and changes its position during pivoting of the release lever.
- DE 196 14 663 AI a valve gun is described in which in the release lever, an actuating member is slidably mounted, which 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 gun in which in addition to a trigger lever, a locking lever is used, which supports the release lever in the release position of the release lever and thereby reduces the user exerted by the operating force to hold the closing body in the open position.
- Valve guns have also been proposed in which the coupling of the release lever to the valve lifter via a toggle (GB 513 013 A) or via a multi-part lever mechanism (EP 2 165 768 Bl), thereby simplifying the handling of the valve gun.
- a toggle GB 513 013 A
- EP 2 165 768 Bl multi-part lever mechanism
- a valve gun in which the actuation force required to open the valve is reduced by the fact that a piston, on which the pressure prevailing upstream of the valve seat of the liquid acts on the release lever.
- the piston is slidably mounted and sealed in a channel.
- Object of the present invention is to develop a valve gun of the type mentioned in such a way that it has a simple structural design, ease of use and low susceptibility to interference.
- the release lever is coupled via a pivotally mounted about a second pivot axis coupling lever with the valve stem, wherein the coupling lever has an actuating element via which the valve stem can be acted upon by the opening force, and wherein the coupling lever has a first and a second force-receiving element, wherein upon pivoting of the release lever from the rest position to the release position first the first force receiving element and then the second force receiving element are acted upon with a triggering force, wherein the first force receiving element has a greater distance from the second pivot axis than the second force-receiving element.
- the coupling of the release lever with the valve tappet takes place via a coupling lever pivotably mounted about a second pivot axis.
- the coupling lever has an actuating element, via which the valve stem can be acted upon by the opening 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 acted upon by the first force receiving element with a release force and upon further pivoting of the release lever of the coupling lever is acted upon via the second force receiving element with a release force.
- the lever ratios of the coupling lever thus change.
- a large opening force can be exerted on the valve stem due to the favorable lever ratio, resulting from the large distance between the first force receiving member and the second pivot axis, even if the user acts on the release lever only with a relatively low actuation force .
- the large distance between the first force receiving element and the second pivot axis has the consequence that during the first phase of the pivoting movement of the trigger lever only a 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 so far away from the valve seat of the valve that the pressure of the fluid upstream of the valve seat degrades considerably.
- the distance of the closing body to the valve seat in the open position of the closing body is at least 1 mm. As a result, flow losses of the liquid can be kept low.
- the valve gun according to the invention is characterized by its ease of use, since the user only has to exert a relatively low actuating force on the trigger lever, and yet the valve lifter can be subjected to a high opening force.
- the force relationships are determined in a structurally simple manner by the configuration of the coupling lever, via which the release lever is coupled to the valve tappet. The valve stem is acted upon by the coupling lever via the actuating element with the opening force.
- the distance of the actuating element to the second pivot axis may be low. In particular, it can be provided that the distance that the actuating element to the second
- the distance of the second force-applying element to the second pivot axis is favorably about 40% to 80%, in particular about 65% to 75%, of the distance which the first force-applying element has to the second pivot axis. It can be provided that at least one further mechanical coupling element is arranged between the release lever and the coupling lever.
- a triggering force is exerted directly on the coupling element.
- the first force receiving element and the second force receiving element can be applied to the release lever.
- the release lever on a first and a second Kraftbeetzschlagungselement, wherein the first force receiving element of the coupling lever can be applied to the first Kraftbeierschlagungselement of the trigger lever and wherein the second force receiving element of the coupling lever can be applied to the second Kraftbeaufschlagungselement of the trigger lever. If the release lever pivoted starting from its rest position into its release position, the first force-receiving element of the coupling lever first contacts the first force-applying element of the release lever, so that the coupling lever is pivoted about the second pivot axis and thereby acts on the valve tappet with a large opening force.
- the second force receiving element of the coupling lever contacts the second force applying element of the trigger lever, so that the pivoting 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.
- 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-receiving element act beaufschlagungselement a second guide surface and a second guide surface contacting and movable along the second guide surface 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 perpendicular to a connecting line between the instantaneous contact point of the first contact element and the first pivot axis aligned first 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 a perpendicular to a connecting line between the instantaneous contact point of the second contact element and the first pivot axis aligned second reference line.
- first the first contact element moves along the first guide surface, wherein the first contact element contacts the first guide surface
- second contact element moves along the second guide surface, wherein the second contact element contacted the second guide surface.
- the first guide surface is formed such that the tangent of the first guide surface at the instantaneous contact point at which the first contact element contacts the first guide surface as it moves along the first guide surface is inclined to a first 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 inclined to a second reference line.
- the angle of inclination between the tangent of the first guide surface and the first reference line is less than the inclination angle between the tangent of the second guide surface and the second reference line.
- the first reference line is oriented perpendicular to a connecting line which is the instantaneous Contact point of the first contact element connects to the first pivot axis.
- the second reference line is oriented perpendicular to a connecting line which connects the instantaneous contact point of the second contact element with the first pivot axis.
- the second contact element moves along the second guide surface and the second guide element and the second contact element, a second release force is transmitted to the coupling lever from the release 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 during the first phase of its pivotal movement with relatively little force against the coupling lever.
- the second phase of the pivotal movement of the coupling lever is moved 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.
- the inclination of the tangent of the first guide surface at the instantaneous contact point of the first contact element relative to the first reference line may be, for example, about 10 ° to 40 °, in particular about 15 ° to 30 °.
- the inclination of the tangent of the second guide surface at the instantaneous contact point of the second contact element relative 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 may be curved, in particular arcuately curved.
- the first guide surface and the second guide surface are planar.
- the two guide surfaces each form an inclined plane on which the first contact element or the second contact element move along the pivoting of the release lever.
- the second guide surface, in combination with the second contact element forms a second wedge gear.
- the release lever is mechanically connected to the coupling lever.
- 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 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 may 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 arranged on an end face of the release lever facing away from the first pivot axis.
- 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 release lever in order to hold the closing body in its open position. This can lead to fatigue of the user. To achieve improved handling of the valve gun, it is desirable to reduce the required holding force.
- the second contact element in the release position of the release lever rests against a support surface, wherein the angle of inclination of the tangent of the support surface relative to a perpendicular to a connecting line between the support surface and the first pivot axis aligned third reference line is smaller as 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 second reference line.
- the angle of inclination of the tangent of the second guide surface preferably has a relatively large value with respect to the second reference line, in particular a value of at least approximately 45 °. If the closing body at the end of the pivoting movement of the release lever in its open position, a further sliding movement of the valve stem is no longer required and the closing body can then be held in its open position.
- the second contact element can assume a position in 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 connecting line connecting the support surface to the first pivot axis.
- 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 release lever.
- the support surface is arranged on the side of the release lever facing the coupling lever. It is advantageous if the support surface is arranged between the first guide surface and the second guide surface. In such a configuration, both the first and the second guide surface and the support surface are arranged on the side of the release lever, which faces the coupling lever. The support surface assumes a position between the first guide surface and the second guide surface.
- the coupling lever is designed in a straight line in an advantageous embodiment of the invention.
- the coupling lever is designed L-shaped.
- valve has a valve inlet and a valve outlet, wherein the valve outlet protrudes from a front side of the housing of the valve gun, and in that the housing by hand by the user Has handle, wherein the release lever protrudes in its rest position from a valve outlet facing away from the back of the handle.
- the user can operate the release lever with his palm.
- pressurized fluid is released from the valve gun, the fluid exerts a recoil on the valve gun.
- the positioning of the trigger lever on the back of the handle remote from the valve outlet results in the valve gun being pressed against the user's palm under the influence of the recoil of the fluid.
- the palm of the user thus acts in the manner of a repository, on which the valve gun is supported. The user's fingers are thus relieved.
- the handle protrudes from a central or rear region of the housing of the valve gun and the first pivot axis in a the end region of the handle facing away from the central or rear region of the housing is arranged.
- the central housing portion at least partially receives the coupling lever via which the trigger lever is coupled to the valve lifter.
- the housing of the valve gun is conveniently formed by two housing shells on which the coupling lever and / or the release lever are pivotally mounted.
- the coupling lever is pivotally mounted on a valve housing of the valve.
- the valve gun in an advantageous embodiment of the invention at least one movable between a first position and a second position locking member, wherein the release lever of the at least one locking member in the first position can be locked and released in the second position.
- valve gun on a first and a second locking member, which are each movable between a first position and a second position back and forth.
- At least one locking member is movably, in particular displaceably or pivotably mounted, on a handle of the housing that can be grasped by the user by hand.
- a locking member protrudes in the first position from a valve outlet facing the front of the handle. If the user grips the handle of the housing with his hand, he can he intuitively move the locking member arranged at 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 to the release position to deliver pressurized fluid through the valve outlet.
- a locking member on a in the rest position of the release lever protruding from the handle portion of the release lever is movable, in particular slidably mounted, wherein the locking member protrudes in its first position from the release lever and in its second position completely in the Disengaging release lever. In its first position, the locking member blocks movement of the trigger lever toward the handle, and in the second position of the locking member, the trigger lever can be moved towards the handle.
- the locking member may, for example, parallel to the first
- Swivel axis to be slidably mounted on the release lever.
- the release lever in its in the rest position protruding from the handle area an opening in which the locking member is slidably mounted.
- Figure 1 is a schematic side view of a first 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 locking member occupies a first position;
- Figure 3 is a sectional view corresponding to Figure 2, wherein the locking member occupies a second position;
- Figure 4 is a schematic sectional view of the valve gun of Figure 1, wherein a release lever assumes a rest position;
- FIG. 5 is a schematic sectional view of the valve gun of FIG. 1,
- release lever assumes an intermediate position
- FIG. 6 is a schematic sectional view of the valve gun of FIG. 1,
- release lever assumes a release position
- Figure 7 is a schematic sectional view of a second advantageous embodiment of a valve gun, wherein a release lever assumes a rest position;
- FIG. 8 is a schematic sectional view of the valve gun of FIG. 7;
- release lever assumes an intermediate position
- Figure 9 a schematic sectional view of the valve gun according to
- FIGS. 1 to 6 A first advantageous embodiment of a valve gun according to the invention is shown schematically in FIGS. 1 to 6 and is assigned the reference numeral 10 overall.
- 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 handle 24, from the free end portion 26, a protective bracket 28 extends to the front housing portion 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 in gripping the handle 24 with his fingers.
- the central housing portion 16 receives a substantially rectilinear coupling lever 32 and in the handle 24, a release lever 34 is arranged.
- the release lever 34 is mounted pivotably about a first pivot axis 36 on the two housing shells and can be pivoted 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 position shown in Figure 6.
- 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 portion 37 out of the valve 20 remote from the back of the handle 24.
- 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 substantially L-shaped first locking member 40 is pivotally mounted on the handle 24 and in the rear lever portion 37, a bolt-like second locking member 41 is slidably mounted parallel to the first pivot axis 36.
- a first leg 42 of the first Arret istsgliedes 40 protrudes in the illustrated in Figures 1 to 4 the first position of the first locking member 40 from the valve 20 facing the front of the handle 24 and a free end 44 of a second leg 46 of the first locking member 40 is located in the first position of the first locking member 40 on the trigger lever 34 and prevents it from pivoting movement.
- the second locking member 41 is mounted in a through hole 43 parallel to the first pivot axis 36 between a first position shown in Figure 2 and a second position shown in Figure 3 displaced back and forth.
- the passage opening 43 is arranged in the rear lever region 37 of the release lever 34 and thus protrudes in the rest position of the release lever 34 from the back of the handle 24.
- the second locking member 41 which is designed in the manner of a bolt, are moved to the first position in which it protrudes with a portion 45 from the through hole 43 and abuts a rear edge 47 of the handle 24.
- the release lever 34 is blocked and can not be pivoted from its rest position to its release position.
- the second locking member 41 To release the release lever 34, the second locking member 41 must be fully inserted into the through hole 43, so that the second locking member 41, the rear edge 47 of the handle 24 releases. 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, 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 in the housing 12 about a second pivot axis 60.
- the second pivot 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, which rests 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 has a valve inlet 74 and a valve outlet 76.
- the valve inlet 74 protrudes from a bottom side 78 of the front housing portion 18 and the valve outlet 76 protrudes from a front side 80 of the front housing portion 18.
- a liquid supply line for example a pressure hose
- 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 valve inlet 74 and the valve outlet 76. If the closing body 68 is in its closed position shown in FIG. 1, it lies tight against 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. By means of the valve tappet 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 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 prevailing fluid pressure.
- the coupling lever 32 has, at its end facing away from the actuating element 64, a first force-receiving element in the form of a first contact element 82, which in the illustrated embodiment is designed as a first contact roller 84 mounted to rotate freely on the coupling lever 32.
- the coupling lever 32 At a distance from the first contact element 82, the coupling lever 32 on its handle 24 facing the underside of a second force receiving element in the form of a second contact element 86 which is designed in the illustrated embodiment as the coupling lever 32 freely rotatably mounted second contact roller 88.
- the distance between the second contact roller 88 and the second pivot axis 60 is smaller than the distance that the first contact roller 84 has from the second pivot axis 60.
- the distance of the second contact roller 88 to the second pivot axis 60 is about 40% to 80% of the distance that the first contact roller 84 to the second pivot axis 60 has.
- the distance between the actuator 64 and the second pivot axis 60 is preferably about 10% of the distance between the first contact roller 84 and the second pivot axis 60.
- the first contact roller 84 may rest against the first guide surface 54 of the release lever 34.
- the release lever 34 starting from its rest position, pivots about the first pivot axis 36, then 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, the position of the instantaneous first contact point 90 also changes.
- 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 thereby degrading 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. 2, then the second contact roller 88 contacts the front end of the second guide surface 56 facing the valve 20.
- the region of the second guide surface 56 As the second contact roller 88 momentarily contacts the second guide surface 56, it forms a momentary second contact point 92.
- the second contact roller 88 rolls along the second guide surface 56 with the coupling lever 32 further about the second pivot axis 60 is pivoted and this shifts the valve stem 66, so that the closing body 68 finally occupies 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.
- a first reference line 98 which is oriented perpendicular to a first connecting line 100 connecting the first contact point 90 with the first pivot axis 36
- the first tangent 94 is inclined by a first inclination angle 102.
- the second tangent 96 is relative to a second reference line 104 perpendicular to a second pad 92 with the first
- Pivot axis 36 connecting second connecting line 106 is aligned, inclined by a second inclination angle 108.
- the first inclination angle 102 is significantly smaller than the second inclination angle 108.
- the first inclination angle is 10 ° to 40 °, in particular 15 ° to 30 °
- the second inclination angle for example 40 ° to 70 °, in particular 45 ° to 65 °.
- the coupling lever 32 is pivoted during a first phase of the pivotal movement of the trigger lever 34 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 release lever 34 by a larger pivot angle, as long as the second contact roller 88 rolls on the second guide surface 56.
- the greater distance that the first contact roller 84 has to the second pivot axis 60, in combination with the smaller angle of inclination 102, results in the user only having to exert a relatively small actuating force on the release lever 34 to open the valve 20. This facilitates the handling of the valve gun 10.
- 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 planar support surface 58 has a third tangent 110, which has a third inclination angle 114, which is smaller than the second inclination angle 108 with respect to a third reference line 112.
- the third reference line 112 is aligned perpendicular to a third connection line 116, which is the support surface 58 connects to the first pivot axis 36.
- valve gun 10 Due to the relatively low inclination of the support surface 58 to the third reference line 112, 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.
- a fatigue-free operation of the valve gun 10 is also assisted 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 hand under the influence of the recoil of the discharged through the valve outlet 76 liquid User who grasps the handle 24.
- FIGS. 7, 8 and 9 a second advantageous embodiment of a valve gun according to the invention is shown schematically and assigned the reference numeral 120 as a whole.
- the valve gun 120 comprises a housing 122, which is formed by a first housing shell 124 and a second housing shell, not shown in the drawing.
- the housing 122 has a central housing portion 126 which is disposed between a front housing portion 128 and a rear housing portion 130.
- the front housing portion 126 receives a valve 132 which is configured identically to the valve 20 explained above with reference to FIGS. 4 to 6. Therefore, to avoid repetition, the same reference numerals are used for individual parts of the valve 132 as for the valve 20 and with respect to FIG These items will be referred to the foregoing explanations to avoid repetition.
- a handle 134 From the rear housing portion 130 is a handle 134, from the free end portion 136 is a guard 138 to the front housing portion 128th extends.
- the guard 138, the central housing portion 126 and the handle 134 surround a handle opening 140, into which the user can engage when gripping the handle 134 with his fingers.
- an L-shaped coupling lever 142 which carries at its front, the valve 132 end facing an actuator 144 and the actuating element 144 is pivotally mounted immediately adjacent to a housing of the valve 132.
- the coupling lever 142 has a first force-receiving element in the form of a first contact element 146, which in the illustrated embodiment is designed as a first contact roller 148 mounted to rotate freely on the coupling lever 142.
- the coupling lever 142 has a second force-receiving element in the form of a second contact element 150, which in the illustrated embodiment is configured as a second contact roller 152 freely rotatably mounted on the coupling lever 142.
- a release lever 154 is pivotally mounted about a first pivot axis 156 on the two housing shells and can be pivoted by the user with the fingers from the rest position shown in Figure 7 on the intermediate position shown in Figure 8 in the release position shown in Figure 9.
- the first pivot axis 156 is arranged in the end facing away from the central housing portion 128 end portion 136 of the handle 134.
- the first pivot axis 156 is aligned parallel to a second pivot axis 158 about which the coupling lever 142 is pivotable relative to the valve 132.
- the triggering lever 154 thus protrudes from the valve 132 in its rest position. turned the front of the handle 134 out and can be pivoted by the user in the handle 134.
- the release lever 154 is acted upon by a spring force in the direction of the rest position.
- the return spring 160 is clamped between the housing 122 and the release lever 154.
- the first contact roller 148 bears against a first force-applying element in the form of a first guide surface 162 of the trigger lever 154.
- the first guide surface 162 is arranged on the handle opening 140 facing away from the back of the trigger lever 154.
- the second contact roller 152 is associated with a second force-applying element in the form of a second guide surface 164, which has the release lever in its front end region remote from the first pivot axis 156. If the release lever 154, starting from its rest position pivoted about the first pivot axis 156, the first contact roller 148 rolls along the first guide surface 162, wherein the coupling lever 142 is pivoted about the second pivot axis 158 and thereby the closing body of the valve 132 from the associated valve seat lifts off and the pressure prevailing upstream of the valve seat of the liquid degrades.
- the second guide surface 164 progressively approaches the second contact roller 152 which reaches the second guide surface 164 in the intermediate position illustrated in FIG.
- the first contact roller 148 lifts from the first guide surface 162 and the second contact roller 152 rolls along the second guide surface 164.
- the coupling lever 142 is thereby further pivoted about the second pivot axis 158, so that the closing body of the valve 132 assumes an increasing distance from the valve seat.
- the release lever 154 reaches its release position shown in FIG. 9, the second contact roller 152 assumes a position on a support surface 166 which adjoins the second guide surface 164.
- the distance of the first contact roller 148 to the second pivot axis 158 is significantly greater than the distance of the second contact roller 152 to the second pivot axis 158. This has the consequence that with a relatively low actuating force exerted by the user on the trigger lever 154, a very strong release force from the coupling lever 152 can be exerted on the valve stem of the valve 132. However, only a relatively small stroke of the valve lifter can be achieved in this first phase of the pivotal movement of the trigger lever 154. A considerably larger stroke is achieved in the second phase of the pivotal movement of the trigger lever 154, in which the second guide surface 164 abuts against the second contact roller 152.
- FIGS. 7, 8 and 9 In the case of the second advantageous embodiment of a valve pistol according to the invention shown in FIGS. 7, 8 and 9, at least one locking element is used, with the aid of which the triggering lever 154 can be locked in its rest position. Only to achieve a better overview, the locking member in Figures 7, 8 and 9 is not shown.
- the locking member for example, on the housing 122 movable, in particular pivotally or slidably held between a first position in which it bears against the trigger lever 154, and a second position in which it releases the trigger lever 154.
- valve gun 120 Due to the different leverage ratios achieved in the first and second phases of the pivotal movement of the trigger lever 154, the handling of the valve gun 120 is very simple; in particular, the valve gun 120 can be operated by the user with little force.
Landscapes
- Mechanically-Actuated Valves (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
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 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/076457 WO2015086085A1 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18194904.1A Division EP3450025B1 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3079833A1 true EP3079833A1 (de) | 2016-10-19 |
EP3079833B1 EP3079833B1 (de) | 2018-09-26 |
Family
ID=49917042
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18194904.1A Active EP3450025B1 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
EP13815707.8A Active EP3079833B1 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18194904.1A Active EP3450025B1 (de) | 2013-12-12 | 2013-12-12 | Ventilpistole für ein hochdruckreinigungsgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160288148A1 (de) |
EP (2) | EP3450025B1 (de) |
CN (1) | CN105813763B (de) |
DK (2) | DK3079833T3 (de) |
WO (1) | WO2015086085A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202016101594U1 (de) | 2016-03-23 | 2016-05-13 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für ein Hochdruckreinigungsgerät |
CN108698055B (zh) | 2016-03-23 | 2021-12-10 | 阿尔弗雷德·卡赫欧洲两合公司 | 用于高压清洁设备的阀枪 |
CN109070106B (zh) * | 2016-04-15 | 2021-05-14 | 阿尔弗雷德·卡赫欧洲两合公司 | 用于高压清洁设备的阀枪 |
WO2017178072A1 (de) * | 2016-04-15 | 2017-10-19 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für ein hochdruckreinigungsgerät |
EP3442713B1 (de) * | 2016-04-15 | 2020-08-05 | Alfred Kärcher SE & Co. KG | Ventileinrichtung und ventilpistole für ein hochdruckreinigungsgerät |
WO2017194169A1 (de) | 2016-05-13 | 2017-11-16 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für ein hochdrduckreinigungsgerät |
DE202016102598U1 (de) | 2016-05-13 | 2016-06-13 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für ein Hochdruckreinigungsgerät |
EP3454993B1 (de) | 2016-05-13 | 2021-07-07 | Alfred Kärcher SE & Co. KG | Ventilpistole für hochdruckreinigungsgerät |
DE202016102597U1 (de) | 2016-05-13 | 2016-06-10 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für Hochdruckreinigungsgerät |
CN107816419B (zh) | 2016-09-14 | 2019-07-05 | 固瑞克明尼苏达有限公司 | 流体喷射器中的活塞-阀接合 |
US20190321838A1 (en) | 2018-04-19 | 2019-10-24 | Schieffer Co. International L.C. | Spray gun |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB826699A (en) * | 1956-02-25 | 1960-01-20 | Waldemar Foerstner | Improvements in or relating to regulators for nozzles |
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 |
DE3926461A1 (de) * | 1989-07-15 | 1991-01-24 | Suttner Gmbh & Co Kg | Ventilpistole, insbesondere fuer ein hochdruckreinigungsgeraet |
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 |
DE102005040083B8 (de) * | 2005-08-24 | 2014-03-06 | WOMA GmbH | Spritzpistole für ein Hochdruckfluid |
US20070080242A1 (en) * | 2005-10-11 | 2007-04-12 | Xuedong Wang | Faucet side spray with metal plated exterior and interior structures, and with inert internal waterway |
EP1996337A1 (de) * | 2006-03-22 | 2008-12-03 | Alfred Kärcher GmbH & Co. KG | Hochdruckspritzpistole für ein hochdruckreinigungsgerät |
US8225964B2 (en) * | 2008-06-13 | 2012-07-24 | Nordson Corporation | Self-locking handheld adhesive dispensers and methods of using such adhesive dispensers |
EP2165767B1 (de) * | 2008-09-17 | 2011-11-09 | Nilfisk-Advance A/S | Hochdruckauslösehebel mit Kraftbetätigungsmechanismus mit doppeltem Übersetzungshebel |
EP2165768B1 (de) | 2008-09-17 | 2012-08-08 | Nilfisk-Advance A/S | Hochdruckauslösehebel mit Kraftbetätigungsmechanismus mit einzelnem Übersetzungshebel |
-
2013
- 2013-12-12 EP EP18194904.1A patent/EP3450025B1/de active Active
- 2013-12-12 WO PCT/EP2013/076457 patent/WO2015086085A1/de active Application Filing
- 2013-12-12 CN CN201380081483.6A patent/CN105813763B/zh active Active
- 2013-12-12 DK DK13815707.8T patent/DK3079833T3/en active
- 2013-12-12 DK DK18194904.1T patent/DK3450025T3/da active
- 2013-12-12 EP EP13815707.8A patent/EP3079833B1/de active Active
-
2016
- 2016-06-09 US US15/178,212 patent/US20160288148A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP3450025A1 (de) | 2019-03-06 |
DK3079833T3 (en) | 2018-12-17 |
CN105813763A (zh) | 2016-07-27 |
WO2015086085A1 (de) | 2015-06-18 |
EP3079833B1 (de) | 2018-09-26 |
EP3450025B1 (de) | 2020-08-12 |
DK3450025T3 (da) | 2020-10-26 |
US20160288148A1 (en) | 2016-10-06 |
WO2015086085A9 (de) | 2018-05-11 |
CN105813763B (zh) | 2018-11-13 |
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