The extracting tool of the filter inserts of fluid filterTechnical field
The present invention relates to a kind of extracting tools of the filter inserts of fluid filter.The present invention is additionally related to a kind of useIn the method for the filter inserts of disassembly fluid filter.
Background technique
It is known from the state of the art fluid filter.Such fluid filter can for example be used in automotive fieldFrom fuel detergenting particle and water.Other fluid filter is designed to, and purifying carbamide solution, the urea liquid is used forThat is DENOX- system is used for nitrogen oxides reduction.Such fluid filter is usually by shell, for fluidThe outflux of inlet and the fluid being cleaned composition.Replaceable filtering can be set in the shell of fluid filter to insertPart.The filter inserts can be formed for example by filter element, and the filter element is fixed on first end housing and the second endBetween housing.The first end housing can have the first opening and the second end housing can have the second opening.
In order to constantly carry out enough filterings for fluid, it is important that by the filter inserts in certain continueBetween or vehicle milimeter number after replaced.For this purpose or entire fluid filter can be replaced, but this isCostly.It alternatively can be set: only removing filter inserts from shell.
So-called extracting tool can be set for this purpose.Such extracting tool can for example be added to describedReplace filter inserts, so as to by filter inserts in use rapidly, stably and without damage from fluid filterShell removes.
Such extracting tool can be for example integrally (similar with the flat elongated bar extended along longitudinal axisIn ice cream bar) form construction.The extracting tool can have one or two hooks in the end in distal side.It is described to tear openThe tool of unloading can be inserted through two openings of the first and second end housings of filter inserts for disassembly process.Extracting toolThe hook be located at downstream end housing locking after seeing the edge positioned at the opening in downstream along direction of insertion.It is describedStatement " downstream " is only construed as the explanation of the position about a direction herein.If now against slotting on extracting toolEnter direction and apply pulling force, then filter inserts can be pulled out from the shell of fluid filter completely.By extracting tool in mistakeEnsure that about the locking after direction of insertion furthermost separate opening for the furthermost separate end housing of plug-in unit is filtered, it canTo remove complete filter inserts from shell.If extracting tool is only locked after seeing opening in front about direction of insertionOnly, then there are following risks: when pulling out extracting tool, the filter element that may be impregnated with by fluid is torn and with thisA part of mode, filter inserts remains inserted in shell.
From the extracting tool of the filter inserts of 2,015 207 565 A1 known fluid filter of DE10.
Summary of the invention
The present invention is from following understanding: must deposit when using the extracting tool of one or in filter inserts insideIn special geometry, the importing of the extracting tool so as to low friction and is without damage carried out.It is alternatively necessaryBe, the extracting tool neatly perhaps flexibly design in this way so that its with it is end housing or filter elementThe inside of opening can be resiliently deformed when mechanically contacting, and can continue to import.The structural environment results in, on the one handFor each diameter of each filter inserts or opening, itself be for the extracting tool that filter inserts distinguishingly construct mustIt wants.
In flexible or elastic extracting tool construction, furthermore, while importing process can be made to exist until extracting toolLocking can be executed simply at filter inserts, but thus, increase following risk simultaneously: pull out or dismantling filteringWhen plug-in unit, extracting tool moves out filter inserts from shell about its stability is not enough.So as filter inserts spyE.g. such case when not placing firmly.In this case it may happen that extracting tool due to its elasticity andIt deforms and is not sufficiently stable for moving out filter inserts from shell.Therefore multiple trial may be necessary, withJust disassembly of the filter inserts from shell is completed.Thus following risk is also increased, the damage filtering when importing extracting tool againElement, thus can increase following risk again: filter inserts cannot be removed from shell completely.
In the case where traditional extracting tool, stably imports provision for disengagement and locked until until the opening of end housingIt is only also likely to be problematic.Because being likely to occur in the manufacturing process of filter inserts, pasted by end housingPerhaps when welding end housing and filter element, the diameter of opening becomes due to adhesives or melt on filter elementIt is small.In this type of situation, following situations may be difficult: by extracting tool, reliably movement passes through opening in this way,So that the hook of extracting tool is costed after the edge of opening.
Therefore there may be following demands, provide a kind of extracting tool, and it is different which is equally suitable for disassemblyFilter element.Meanwhile the extracting tool should be configured such that so that when extracting tool is directed through filter inserts forThe damage risk of the filter element of filter inserts is as small as possible.Finally, the extracting tool should design in this way, so that even ifIn the case where bigger tolerance of the opening diameter due to manufacturing process, can also it be reliably achieved without bigger power flowerIn the case where taking stably guidance by the opening of end housing, and be then able to realize end housing open edge itStably locking afterwards.The last extracting tool should be able to simply and expense advantageously manufactures.
The demand can be met according to subject matter of the independent claims through the invention.Advantageous reality of the inventionMode is applied to be illustrated in the dependent claims.
It suggested a kind of extracting tool of the filter inserts of fluid filter according to the first aspect of the invention.It is described to tear openThe tool of unloading includes the first arm extended along first axle and the second arm extended along second axis.First arm has theOne hook, first hook are extended substantially transversely to or are stretched out perpendicular to first axle from the first arm.Second arm hasSecond hook, second hook extend substantially transversely to second axis and stretch out from the second arm.Here, the first arm and the second arm pass throughArticulation piece is rotated to be connected with each other.It is understood as that the statement " extending substantially transversely to " herein perpendicular to the direction of first axle,Described in direction can with vertical line at 20 ° with until for amplitude deviation.
In other words, the extracting tool is constructed in a manner of scissors.It in this way can simply and reliablyChange the first hook at a distance from the second hook.Therefore the first hook and second can be selected smaller when importing extracting toolThe distance of hook.After terminating importing process, that is when described two hooks reach see along direction of insertion it is subsequentWhen after opening, described two hooks can be increased around rotation articulation piece rotation relative to the second upper-arm circumference by the first arm in this wiseThe distance of son, so that described two hooks can be from the edge for rabbeting opening below.
Described two hooks are suitble to the pass by the edge of the opening of one of end housing, particularly filter inserts hereinRabbet in the edge for the opening that direction of insertion or importing direction are located at downstream from below.Concept " downstream " or " upstream " are at thisThe relative position about determining direction is only understood in the context of application.As long as no explicitly pointing out, thenJust it is not related to the flow direction of fluid herein.
Proposed extracting tool can advantageously simply and expense advantageously manufactures.Due to two hooks mutually itBetween the distance that can be changed be advantageously suitable in disassembly or the different make of extraction or with different end housingsThe filter inserts of opening diameter.In other words: proposed extracting tool can be widely applied to different filter inserts.
Furthermore it can be still able to not ask in the case where the opening diameter of end housing changes due to manufacturing toleranceIt inscribes ground and simply, is that is inserted through filter inserts and in the shape of insertion in the case where not big power is spentIt is adjusted in this wise in state, so that described two hooks reliably and are stably arranged in after the edge of opening, and energyFilter inserts are stably extracted from the shell of fluid filter or stably dismantled to enough realize out.Finally, extracting tool orOne arm and the second arm can with dimensionally stable construct.The special elasticity of material or the shape of extracting tool are not necessary.Because the distance of hook can set importing process or insertion process in this wise so that hook especially not with mistakeFiltering can be inserted through in the case where the inside of filtering element or the open edge Mechanical Contact of end housing out of questionly to insertPart.Two arms by dimensionally stable are constructed, disassembly process becomes extremely simple and reliable: because even bigger necessaryIn the case where pullout forces, due to shape stability, the accidental torsion of the extracting tool will not be expected.Thus advantageously reallyIt protects, has been able to that without damage and reliably filter inserts are integrally extracted out or torn open from shell when attempting first timeIt unloads.
A kind of improvement project is provided with, and the rotation articulation piece is arranged in the first operation-end and the first hook of the first armBetween son, and rotation articulation piece is arranged between the second operation-end of the second arm and the second hook.Thus it advantageously causes, described two hooks can be from the first operation-end and the second operation-end side simply and not big powerGround is spent to carry out dislocation.Because producing leverage, the leverage at a distance from rotation articulation piece by operation-endDescribed two hooks are spent with small power and mutually realize dislocation.
It can be set, rotation of the extracting tool by arm relative to each other around rotation articulation piece can be setDetermine to importing state and is set in the disassembly status different from importing state.Here, in importing state, the first hook andSecond hook transverse to the angular bisector between first axle and second axis mutually has first distance.In disassembly statusIn, the first hook and the second hook transverse to angular bisector mutually have second distance.Here, first distance less than second away fromFrom.Preferably, first distance accounts for the highest 70% of second distance, advantageously highest 60%, very particularly advantageously highest 50%.TheOne distance and second distance herein for example from the free end of the first hook to the free end of the second hook, that isIt is measured from each outermost point of each hook.It can be set herein, first distance is less than the first end of filter insertsThe first diameter of first opening of housing.Furthermore it can for example be provided that, second distance is greater than the first end of filter insertsThe first diameter of first opening of housing.
Thus it advantageously leads to, extracting tool can be spent with small power with two hook and be preferably without machineTool touching it is directed into the opening that in filter inserts or guidance passes through the end of filter inserts.Meanwhile consequently leading to,In disassembly status, described two hooks reliably recline after the edge of the first opening of the first end housing of filter insertsOr from rabbeting the edge below and disassembly filter inserts can be reliably achieved in this way.The first end housingThe second end housing downstream for being arranged in filter inserts is seen about the direction of insertion of extracting tool or importing direction herein.
Can be set, in disassembly status, the first hook and the second hook be located remotely from each other outwardly.Equally may be usedTo be provided that, in importing state, the first hook and the second hook be located remotely from each other outwardly.Here, statement " refers to outwardTo " it is understood that oriented to main body of the direction far from each arm at following direction, or far from angle between the two armsBisector it is directed toward.
It can be set, the first hook is arranged in the first hook-end opposite with the first operation-end of the first armAt portion.Furthermore it can be set, the second hook is arranged in second hook-opposite with the second operation-end of the second armEnd.The first hook and/or the second hook are arranged in this way, it can be advantageous to realize the distance between two hooksKing-sized adjusting.First hook-the end and the second hook-end form the end in the distal side of each arm herein.
It is provided in a kind of improvement project, the first arm and the second arm are that construction is identical.It in this way can be specialExpense advantageously and simply manufactures the extracting tool.Such as the extracting tool can be manufactured with injection moulding process.Pass throughThe construction phase same sex of first arm and the second arm can for example cause, and only unique injection mold is necessary.First arm andTwo arms can be assembled for example in this wise herein, so that the second arm is amplitude around second axis with 180 ° about second axisRotatably (similar to when the thumb of two hands and little finger of toe are placed overlapping one another respectively, two hands are each other with the assembly of the first armIt overlappingly places).
It can be set herein, rotate articulation piece around existing as individual components and to be assembled laterRotary shaft rotation.But also can be set, the rotary shaft for rotating articulation piece is respectively configured at the first arm and secondAt arm, opening corresponding with rotary shaft is same.
It can be set, the rotation articulation piece is formed by constructing the first embolism at the first arm, and described firstEmbolism transverse to the direction of the first hook or extending direction and transverse to first axle is stretched out from the first arm, and theIt is scarfed in two arms in corresponding second rotation articulation piece-opening.
It alternatively or additionally can be set, second bolt of the rotation articulation piece by construction at the second armPlug is formed, and second embolism is transverse to the direction of the second hook or extending direction and transverse to second axis from secondArm stretches out, and is scarfed in corresponding first rotation articulation piece-opening in the first arm.
Thus it advantageously leads to, extracting tool is integrally constructed with rotation articulation piece.In this way, extracting tool energyIt reaches particularly simply and expense advantageously produces.When that independent shaft element need not be arranged, two arms are assembled into disassembly workThus tool is equally obviously simplified, next the shaft element connects described two arms.
It can be set, the first operation-end of the first arm has the first operation-opening of duct type.
It alternatively or additionally can be set, the second operation-end of the second arm has the second behaviour of duct typeWork-opening.
It is possible that for example described two operation-openings are mutually aligned in disassembly status.
By be arranged the operation-opening or at least one operation-opening can operator for extracting tool orPerson user obviously simplifies extraction process or disassembly process.Because it is possible that operator passes through the first operation-openingAnd/or its finger or tool, such as screwdriver or spanner can be inserted through by the second operation-opening, so that canIt is exerted a force on extracting tool over a greater surface area in disassembly process.
It can be set, the first label is installed in this wise in the first operation-end and in the second operation-endIn this wise installation second label so that when set extracting tool importing state when, by the first arm relative to the second upper-arm circumferenceAround rotation articulation piece come when rotating, described two labels are then stacked or are aligned up and down.Advantageously instruction is torn open in this wayThe operator or operator of tool are unloaded, described two hooks mutually only have subtle distance, and in this way canIt is enough that extracting tool is imported into filter inserts in the case where not damaging filter inserts and filter element in importing process.ByThis can be realized under the conditions of the visual field of difference and without damage dismantles filter inserts.First label and the second label for example may be usedTo be implemented in the form of extension or groove, so that can be with touching when only existing insufficient visual field conditionThe mode of feel or the state that extracting tool can be checked in a manner of feeling,.
It can be set, arrange the first fixing element in the first operation-end and in the second operation-end clothSet the second fixing element.The two fixing elements can be coupled mutually with each other operation end in this wise, so that at leastPrevent two upper-arm circumferences around the rotation of rotation articulation piece along direction of rotation.For example, two fixing elements can be dismantled in settingThe rotation of arm is prevented after state.
Thus it advantageously leads to, is prevented after setting disassembly status, that is following states unintentionally or evenThe extracting tool so is adjusted, in the state, described two hooks are from the end housing for rabbeting filter inserts belowThe edge of opening.Can for example assure success in the case where difficult spatial relationship in this way dismantle filter inserts andExtracting tool is prevented to skid off during disassembly process.
It can be set, first fixing element is stretched out transverse to first axle from the first arm and structure in this wiseIt makes, so as at least surround to blockiness the second operation-end.
It alternatively or additionally can be set, second fixing element is stretched out simultaneously transverse to second axis from the second armAnd be designed such that, so as at least surround to blockiness the first operation-end.
Thus it advantageously leads to, the particularly compact and torsional rigid of the extracting tool is generated in following stateShape, in the state, each fixing element surrounds each operation-end of another arm.Described two arms for example can be withIt is configured to flat element, that is to say, that there is along first or second axis relatively long extension, but at twoIt is constructed compared to the first extension with respect to unfertile land in other size.Such as can produce a kind of aspect ratio, the aspect ratio is onlyIllustratively 40:5:1.Extracting tool can have the relatively small coupling stiffness transverse to the smallest size first as a result,.It can be caused by constructing the first and/or second fixing element, at least be passed through in operation-end when surrounding and operating end solidDetermine element along following directions improve material thickness and so that extracting tool stablize, in the direction, the disassemblyTool has the smallest scale.It can on the one hand more simply apply force on extracting tool in this way, because in the presence of moreBig active area.On the other hand the extracting tool when dismantling filter inserts is advantageously prevented by higher coupling stiffnessAccidental skids off.
It suggested a kind of method for dismantling the filter inserts of fluid filter according to the second aspect of the invention.It is describedFluid filter includes shell and at least one fluid-infusing port and at least one fluid flow outlet in installment state.ThisOutside, fluid filter includes filter inserts, and the filter inserts are for example encased in shell.The filter inserts include along verticalThe filter element and the first and second end housings that axis extends.The filter element can for example fold with star or structureCause wound fil-tration elements.Other filter element is also possible.The filter element is seen along longitudinal axis is arranged in firstBetween end housing and the second end housing.First end housing has the first opening of duct type and the second end housing hasThere is the second opening of duct type.The filter inserts can for example hollow cylindrical construct.The method herein the following steps are included:
First step: the extracting tool according to preceding description is provided；
Second step: setting extracting tool is into importing state, wherein the first hook and the second hook are horizontal in importing stateTo in the angular bisector between first axle and second axis mutually having first distance, wherein first distance is less than firstThe first diameter of opening and the second diameter being open less than second；
Third step: extracting tool is imported into filter inserts in this wise along importing direction, so that extracting tool is describedTwo hooks, which are fully directed, to be open and by second by the first opening；
- the four steps: two arms by rotating extracting tool around rotation articulation piece relative to each other, by extracting toolIt is set to disassembly status, wherein in disassembly status, the first hook and the second hook transverse to angular bisector mutually have theTwo distances, wherein second distance is greater than the first diameter of the first opening of the first end housing of filter inserts.Described two hooksSon for example can be in this way from the edge for the first opening for rabbeting first end housing below；
- the five step: by extracting tool against importing direction dislocation, so that filter inserts are torn open together with extracting tool from shellIt unloads.
It can be realized by proposed method and extracting tool be particularly simply directed through filter inserts.It furthermore can be withSame extracting tool is used for the different filter inserts with different size of opening.Finally, this method offer is following excellentPoint: can ensure in a simple manner after guiding extracting tool by described two openings: described two hooks canRabbet after the edge reliably and being stably open first and in this way reliably by filter inserts with uniqueOne mode or " integrally " are dismantled or are extracted out from the shell of fluid filter.
Detailed description of the invention
Other feature and advantage of the invention can be from below for illustratively implementing for professionalThe explanation of mode is found out referring to attached drawing, but it cannot restrictively be construed to the present invention.
Attached drawing is shown:
Fig. 1 a-1e: the extracting tool of the prior art and its different diagrams of application；
Fig. 2 a-2c: the signal of extracting tool in importing state and in disassembly status, according to the present invention and its applicationFigure；
Fig. 3 a: the view of the embodiment of the extracting tool in disassembly status；
B: Fig. 3 a of Fig. 3, extracting tool in decomposing state side view；
C: Fig. 3 a of Fig. 3, extracting tool in decomposing state top view；
Fig. 4: there is the cross-sectional view for the filter inserts for importeding into therein, in disassembly status, Fig. 3 a extracting tool；
Fig. 5: pass through another cross-sectional view of the filter inserts of Fig. 4；
The top view of the first end housing of the filter inserts of Fig. 6 a: Fig. 4；
The top view of the second end housing of the filter inserts of Fig. 6 b: Fig. 4.
Specific embodiment
Fig. 1 a shows the extracting tool 60 of the prior art.The extracting tool 60 is integrally with ice cream bar or scraperForm construction.In other words, the extracting tool has flat, elongated extension.In front remote of extracting tool 60There is the first hook 63 and the second hook 64, they are constructed in the form of two prong teeth at the end 61 of side.Similar structureIt exists at the second end 62 in the distal side of extracting tool 60.The extracting tool 60 is herein at it in first end 61 andThere is recess portion, so that it is the elasticity of shape and flexible as far as possible in the section of centre between two ends 62.
Fig. 1 b shows the extracting tool 60 when importeding into filter inserts 70 along importing direction 80 of the prior art.The filter inserts 70 have the construction of hollow cylindrical and extend along longitudinal axis A.The filter inserts 70 include having theOne opening 73 first end housing 71 and with second opening 74 the second end housing 72.78 Fluid Sealing of filter elementGround is fixed between described two end housings 71,72.The filter element 78 equally has the shape of hollow cylindrical, so thatThe extracting tool 60 can be inserted through the second opening 74 first along longitudinal axis A in importing direction 80, then can be throughIt crosses the hollow inside of filter element 78 and can finally be inserted through the first opening 73 of first end housing 71.Here,The distance of two hooks 63,64 of extracting tool is greater than the diameter of the first opening 73 and the second opening 74.Pass through extracting tool 60First end 61 fork-shaped structural scheme, hook 63,64 flexibly can reversibly collide in the form of fixing hookWhen it is each opening 73,74 edge on deflect inward and by opening after and spring back outward into.
The section that Fig. 1 c shows the amplification in a state of Fig. 1 b passes through in importing process in the stateShortly before first opening 73, the first hook 63, which closely lands, to be sticked at the edge 75 of the first opening 73.
The filter inserts 70 additionally have the air locking 79 of the form of such as O-ring, and the O-ring distinguishes clothIt sets in first end housing 71 and the second end housing 72 radial outside and can be realized for fluid filterShell be sealed.
Fig. 1 d shows fluid filter 90 with shell 93 and fluid-infusing port 91 and fluid flow outlet 92.It is describedFilter inserts 70 are mounted in shell 93.In general, filter inserts 70 are covered by lid Fluid Sealing.But shown attachedIn figure, the extracting tool 60 that filter inserts 70 are by mean of the prior art is removed from shell 93.Show following state: wherein tightBefore importeding into filter inserts 70, extracting tool 60 is in importing direction 80.
Fig. 1 e shows the fluid filter 90 of Fig. 1 d, and wherein extracting tool 60 imported into filter inserts 70 in this wise nowIn so that described two hook (not shown) from below rabbet filter inserts 70 (unshowned) first be open edge.By against extracting tool 60 described in 80 dislocation of direction of insertion, it now is possible to by extracting tool 60 together with filter inserts 70 from fluidFilter 90 removes.
Fluid filter 90 can for example be related to the fuel filter for example for oil, diesel oil or gasoline.Similarly may be usedCan, fluid filter 90 is arranged for the filter of the filter urea solution in DENOX- system.Fluid filterOther operational version is also admissible.
Fig. 2 a schematically shows extracting tool 1 and filter inserts 70 of the invention.Same appended drawing reference is hereinSame function element is shown.
First opening 73 of the first end housing 71 of filter inserts 70 has first diameter D3.The second end housing 72Second opening 74 has second diameter D4.
Extracting tool 1 is shown in importing state 50.The extracting tool 1 has the first arm 10, and first arm is along theOne axis A1 extends.Furthermore extracting tool has the second arm 20, and second arm extends along second axis A2.First arm10 have the first hook 11, which extends substantially transversely to first axle A1, that is generally perpendicularly (relative to vertical+/- 20 ° of line) it is stretched out from the first arm 10, and suitable for from the of the first end housing 71 for rabbeting filter inserts 70 belowThe edge 75 of one opening 73.Second arm 20 have the second hook 21, second hook extend substantially transversely to second axis A2 fromSecond arm 20 stretches out and the side suitable for the first opening 73 from the first end housing 71 for rabbeting filter inserts 70 belowEdge 75.
First hook 11 is arranged at the first hook-end 3 of the first arm 10, and the second hook 21 is arranged in the second arm 20At second hook-end 4.Two hook-ends 3,4 may, for example, be the end in the distal side of each arm 10,20.
First arm 10 and the second arm 20 are connected with each other by rotation articulation piece 30.The rotation articulation piece 30 is arranged in firstBetween the first operation-end 12 of arm 10 and the first hook 11.Furthermore the rotation articulation piece 30 is arranged in the of the second arm 20Between two operations-end 22 and the second hook 21.First operation-the end 12 has the first operation aperture 15 of duct type,Screwdriver or operator's or operator's finger for example can be inserted by first operation aperture.The second of second arm 20Operation-end 22 has the second operation aperture 25 of duct type, and screwdriver or hand equally can be inserted by the operation apertureRefer to.The extracting tool 1 is preferably designed such that, so that 15,25 tearing open in extracting tool 1 of described two operation-openingsUnload alignment in state (Fig. 2 c).
First hook 11 and the second hook 21 are transverse to the angular bisector W between first axle A1 and second axis A2Mutually there is first distance D1.The first distance D1 is herein from the outermost end of each hook to other each hookOutermost end measure.In the embodiment illustrated, importing shape of described two hooks 11,21 in extracting tool 1In state 50 outward, that is from each arm 10,20 far from angular bisector W direction.
Furthermore Fig. 2 b shows the extracting tool 1 in importing state 50, wherein the extracting tool 1 passes through second nowIn the recess portion for the hollow cylindrical that opening 74 imported into filter element 78.The first distance D1 of described two hooks 11,21 is less thanThe second diameter D4 of second opening 74 of two end housings 72, the importing of extracting tool 1 can there is no and filter as a result,The Mechanical Contact of the component of plug-in unit and therefore not big power spend ground and without damage carry out.The first distance D1Preferably again smaller than the diameter of the recess portion of filter element 78, so that extracting tool 1 passes through the importing process energy of filter element 78It is enough not damage the progress of 78 ground of filter element.Therefore this is especially important, because the filter element 78 is gone back in disassembly processBut fluid wets, it thus can reduce the intrinsic stability of the filter element 78.Particularly when filter element 78 damagesIt will appear tearing for filter inserts 70.
Fig. 2 c shows the extracting tool 1 in disassembly status 52.For this purpose, extracting tool 1 is also directed through the nowOne opening 73.Because first distance D1 of described two hooks 11,21 in importing state 50 is again smaller than first diameter D3, describedTwo hooks 11,21 also without problem are conducted through the first opening 73.
Now in order to adjust extracting tool in disassembly status 52, described two operation-ends 12,22 are separated from each other movement(see arrow), thus by the first arm 10 relative to the second arm 20 around rotation articulation piece 30 rotation and described two hooks11, it 21 is located remotely from each other.Here, described two hooks 11,21 from below interlocking first opening 73 edge 75.Described two hooks11,21 have second distance D2 now in disassembly status 52, and the second distance is greater than the first diameter D3 of the first opening 73.It now can be by the way that the extracting tool 1 be carried out dislocation for extracting tool 1 against direction of insertion 80 in disassembly status 52It is come out together from 93 dislocation of shell of fluid filter 90 with entire filter inserts 70.
Proposed extracting tool 1 have the advantage that without damage, quickly and reliably, with small powerIt spends and extracting tool 1 is directed through described two openings 73,74.Therefore disassembled configuration can be set with method in a simple mannerState 52, wherein can reliably dismantle filter inserts 70 by means of extracting tool 1 because described two hooks 11,21 stably,Wide area and reliably from below interlocking first opening 73 edge 75.
Fig. 3 a shows one embodiment of extracting tool 1.First arm 10 and the second arm 20 are configured to structure hereinIdentical component is made, wherein such as the first arm 10 is rotated for amplitude around first axle A1 relative to the second arm 20 with 180 °,So that the first hook 11 is directed toward along the direction opposite with the second hook 21.The extracting tool 1 shows in disassembly status 52Out.The first operation aperture 15 of the duct type of described two arms 10,20 and the second operation aperture 25 of duct type are mutually right as a result,It is quasi-.In this position, such as tool, such as screwdriver or similar means can for example pass through the manipulation of alignment opening 15,25It is interspersed, so as to the power effect being thus simplified on extracting tool 1.
It can be seen that the first label 5 of peg formula at the first operation-end 12, be more than to the first label slight projectionThe edge of the outside of first operation-end 12 protrudes outward.The second similar label 6 is arranged in the second operation-end 22On two arms 10.In diagram, it is covered by the first arm 10.If the first arm 10 rotates in this wise against the second arm 20, so thatFirst label 5 and the second label 6 are stacked up and down next to ground, that is to say, that the protrusion of described two peg formulas is transverse to angle bisectionLine W alignment, therefore, the distance between the first hook 11 and the second hook 21 is small in this way, to set the extracting tool 1Importing state 50.The alignment of described two operation-openings 15,25 can be by means of described two labels 3,4 for example in difficultyLoading state is felt or is touched in a manner of tactile in dark, furthermore it can also be identified in a manner of vision.
First arm 10 and the second arm 20 are respectively provided with outer edge 17 in the view shown, and the outer edge is relative to planeInner projection.Thus reach the raised rigidity of arm in the case where the weight of very little.Furthermore the torsion stiffness of arm 10,20 is led toThe reinforcing rib 16 that extends between the outer edge 17 of arm 10,20 is crossed to improve.In this way, each arm 10,20 is on the one hand non-It often lightly rigidly constructs, is thus avoided when dismantling filter inserts 70 accidental or undesirable and at the same time especially connectingIt skids off.
Fig. 3 b shows the extracting tool 1 of Fig. 3 a in the state of decomposition in side view.Here, the first arm 10 is in attached drawingIn shown on top and the second arm 20 is shown in lower part in the accompanying drawings.
Described two constructions of arm 10,20 are identical, do not illustrate only the front of arm by the diagram and show the back side.?At the position for rotating articulation piece 30, the first embolism 13 extends downwardly in diagram transverse to the first axle A1 of the first arm 10.FromFirst embolism 13 towards the first operation-end 12 direction offsettingly, with the first embolism 13 be disposed adjacently the first rotary hingeFitting-opening 14.First rotation articulation piece-opening as in fig. 3 a it can be seen that as semicirclely around the first bolt13 arrangement of plug.Because the second arm 20 constructs identical with the first arm 10, the second embolism 23 is from the second arm 20 towards the side of the first arm 10To stretching.Second rotation articulation piece-opening 24 cannot directly find out in the view shown (draw dotted line attached drawing because theyAfter plotting planes).When the first arm 10 and the second arm 20 are assembled together, described two embolisms 13,14 are imported intoInto each corresponding rotation articulation piece-opening 14,24 of each opposite arm 10,20, so that construction rotation articulation piece30.It is advantageous that separation, single existing construction component need not be maintained in order to construct rotation articulation piece 30, for example revolvedShaft, the construction component are easily lost in assembly.On the contrary, extracting tool 1 can be from identical arm 10,20 be constructed with simpleWays and means assembly or be plugged in together.
At the first operation-end 12, the first fixing element 18 is stretched out transverse to first axle A1 in this wise, makes its directionSecond arm 20.First fixing element 18 has a recess portion 18a, and the second operation-end 22 of the second arm can at least blockinessGround is contained in the recess portion.On the opposite side of the first fixing element 18, the first arm 10 is in the first operation-end 12Place has first edge recess portion 19.The first edge recess portion 19 is designed such that, so that the second fixing element 28 of the second arm 20The first arm 10 can be surrounded or overlapped in the section of first edge recess portion 19.The similar setting of second edge recess portion 29 is theAt two arms 20.So the second arm can be overlapped or be surrounded by the first fixing element 18.
It is provided with herein, in the state of extracting tool 1 being assembled with when reaching disassembly status, described two fixed membersPart 18,28 is coupled with opposite arm 10,20 phases in this wise, so that described two arms 10,20 of extracting tool 1 is otherRotation is no longer possible.Furthermore it is provided with, in disassembly status 52, the first fixing element 18 and second edge recess portion 29 are for exampleLocking is carried out by locking protrusion, to prevent in two directions around the rotary motion of rotation articulation piece 30.Second is fixedElement 28 can such as similarly locking with the first arm 10.
Fig. 3 c shows Fig. 3 a, extracting tool in top view identical with Fig. 3 a, but in the figure pointFirst edge recess portion 19 can be found out in the state of solution particularly well.What the second edge recess portion 29 was located at the second arm 20 can notOn the side seen.But because the construction of arm 10,20 is identical, second edge recess portion 29 corresponds to first edge recess portion 19.
Fig. 4 shows the extracting tool 1 in disassembly status 52.The extracting tool 1 is inserted through filtering completely hereinPlug-in unit 70 so that described two hooks 11,21 from below rabbet first end housing 71 first opening 73 edge 75.CauseThis, the extracting tool 1 and filter inserts 70 mechanically mutually couple.If now by extracting tool 1 against direction of insertion 80Dislocation, then thus also dislocation filter inserts 70 together.For better visuality reason in Fig. 4 until edge 17 is saturatingThe first arm 10 towards observer is shown brightly.
Fig. 5 shows filtering in the sectional view rotated relative to Fig. 4 with 90 ° for amplitude, in disassembly status 52Extracting tool 1 in plug-in unit 70.Reinforcing rib 16 can be recognized particularly well in the diagram, improved and torn open by the reinforcing ribUnload the torsion stiffness of tool 1.It has thus advantageously been resisted accidentally by extracting tool 1 or one of its arm 10,20 torsionSkid off.
The top view of the first end housing 71 of filter inserts 70 is shown in Fig. 6 a.People recognize extracting tool 1Described two hooks 11,21, the hook overlapped in disassembly status 52 first opening 73 edge 75.The hook 11,21 outer profile rounded corner herein arc-shapedly, so that the hook 11,21 covers the area as big as possible at edge 75.ByThis can apply big power, but the power is only applied in small pressure (power on pressure=every part of area) to edge 75.The circular arc of hook 11,21 extends past about 20 to 40 ° of angular range herein.
Fig. 6 b shows the second end of the filter inserts 70 in the case where extracting tool 1 of insertion in disassembly status 52The top view of portion's housing 72.As can be seen that the first label 5 and the second label 6 are not aligned in disassembly status 52.Described firstThe second edge recess portion 29 of fixing element 18 and the second operation-end 22 overlap joint.Similarly, the second fixing element 28 is secondThe first edge recess portion 19 of the second recess portion 28a and the first arm 10 in operation-end 22 overlap.In this way, along rotationThe bigger strength of materials that can generate extracting tool 1 namely transverse to longitudinal axis A is seen in the direction of axis 30.Thus it risesHigh torsion stiffness.Two arms 10,20 of extracting tool 1 are prevented by coupling described two operation-ends 12,22 simultaneouslyIt is accidental or unintentionally rotate and prevent hook 11,21 sliding from the edge of first end housing 71 75 in this wayOut.
Fluid mistake of the extracting tool 1 introduced suitable for disassembly for example for fuel filter or urea filterThe filter inserts 70 of filter 90.The extracting tool is since its characteristic can be widely used, that is can be used in differenceThe filter inserts 70 of type, can be easily manufactured, be that expense is advantageous, and allows filter inserts 70 reliably from affiliatedThe shell 93 of fluid filter 90 is dismantled.