EP2142340A1 - Hand-zangenwerkzeug - Google Patents
Hand-zangenwerkzeugInfo
- Publication number
- EP2142340A1 EP2142340A1 EP08735599A EP08735599A EP2142340A1 EP 2142340 A1 EP2142340 A1 EP 2142340A1 EP 08735599 A EP08735599 A EP 08735599A EP 08735599 A EP08735599 A EP 08735599A EP 2142340 A1 EP2142340 A1 EP 2142340A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hand
- lever
- hand lever
- support roller
- pliers tool
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/532—Conductor
- Y10T29/53209—Terminal or connector
- Y10T29/53213—Assembled to wire-type conductor
- Y10T29/53222—Means comprising hand-manipulatable implement
- Y10T29/53226—Fastening by deformation
Definitions
- the invention relates to a hand-pliers tool, in particular Verpresszan- GE, with jaws and hand levers, the jaws are pivotable about a, preferably common, axis of rotation, further a hand lever is articulated with one of the jaws and between the hand levers to form a Knee lever is formed a pressure relief.
- Hand-pliers tools of the type in question are known. These are used, in particular in the form of crimping pliers, for the radial compression of pressings, for example sanitary fittings or for crimping cable connections, while reducing the pipe or sleeve diameter.
- Such pliers tools are manually operated, correspondingly have two hand lever, wherein a hand lever is pivotally connected to one of the jaws and the other hand lever possibly rigid with the other jaw. It is also known in this regard to achieve an improved leverage over a knee lever training between the hand levers, so as to achieve the required high compression forces on the pressing by means of relatively low actuation forces.
- the pressure support consists of a support roller arranged on the one hand lever and cooperates with the support roller attached to the other hand lever. the curve section.
- an improved kinematics is achieved in connection with the toggle design.
- the ratio is improved, which in comparison to the known hand-pliers tools, in particular pressing tongs, can achieve an increased pressing force with the same operating force. Accordingly, the actuating force is substantially reduced at the same pressing force compared to the known pliers. Due to the selected configuration of the pressure support, an up to 30% higher pressing force can be achieved with respect to manual pliers tools of the type in question. It is independent on which hand lever the support roller and the cam part are arranged. These parts form the knee joint of the knee lever assembly.
- the support roller and the cam part cooperate by rolling.
- the edge of this facing cam surface in a plan view of the curve part describes a curved line.
- This is not necessarily uniform, but rather can form over the length of differently shaped arc sections, so on, each with different radii, which also relate to different centers.
- about the shape of the curve or the arc sections influence is taken on the translation.
- the support roller is movable relative to a hand lever.
- the support roller is preferably rotatably supported on the hand lever, this further with a rotation axis, which is preferably offset in space parallel to the axis of rotation of the jaws.
- a supporting roller is also an example of a roller-shaped body or lever projection, which does not rotatably supported, but nevertheless cooperates with the cam part.
- the curve part is continuously convexly curved in the interaction region, wherein the curvature can be defined by a uniform radius. Alternatively, a radius that changes over the length of the curvilinear side interaction area is provided. As an alternative, the curve part may also be partially concavely curved in the interaction region.
- the curve part is removably attached to the hand lever.
- curve parts with different curvatures can be used.
- the support roller may also be exchangeable on the other hand lever. be strengthened, for example, to offer different support role diameter.
- the cam member be secured to the hand lever pivotally connected to a jaw so that the bearing point of the support roller mounted on the other hand lever and the pivot point between the movable hand lever and jaw constitute the outer points of the bell crank and the roll-off point, i. the contact point between support roller and cam part, the third point, i. in a figurative sense, the knee joint.
- the curve of the curve part forms a slope over which the ratio of the two legs of the toggle lever can be influenced, these legs themselves always take a fairly favorable angle of extension.
- the cam member may also be attached to the other hand lever, which is rigidly connected to the associated jaw, while the support roller is mounted on the hand lever pivotally connected to a jaw.
- the curve part is further preferably formed on a support portion which is part of the one hand lever and protrudes toward the opposite hand lever. Also, alternatively and moreover, in combination, the support roller on the other hand lever in the region of an opposite hand lever projecting bracket portion be attached so that, for example, a support of curve part and support roller below the jaws rotation axis, further approximately centered between the hand levers established.
- the support portion may be formed integrally with the hand lever in a further embodiment, for direct action on the cam member via the associated hand lever.
- the holding section may be provided separately from the hand lever, with it also being proposed in this regard that the holding section be provided It is pivotable relative to the hand lever and the hand lever in the forceps closing direction or, in particular, during the closing of the forceps, acts on the holding portion by way of a ratchet formation.
- the hand lever on a pivotable ratchet lever which cooperates with a toothing of the support portion.
- Form gleicheingriff be provided between the hand lever and the support portion, which form-fitting engagement, however, allows the ratchet operation.
- the support roller may be adjustable to change the toggle lever relative to the hand lever in which it is mounted, so as to change the support point on the opposite cam part.
- a hand-operated adjustment for changing the positioning of the support roller axle can be provided.
- Preferred in this regard is an embodiment in which the support roller is mounted eccentrically to achieve the adjustability. Adjustment axis and rotation axis of the support roller are therefore arranged eccentrically to one another. The adjustment can be made directly by means of a tool by the user. It is conceivable in this regard, a solution in which the adjustment can be achieved without tools.
- the hand lever learn in the course of the pliers closing movement a guide by supporting the support roller on the cam part.
- the ratchet lever can be forcibly relocated for interrupting, for example, a mis-pressing by means of a tool or the like in a release position, so that even before the end of the actual pressing operation, an opening of the pliers legs can be achieved.
- FIG. 1 is a perspective view of a top view of the pliers head region of a hand-held pliers tool according to the invention
- Fig. 2 is a perspective bottom view thereof
- FIG. 3 shows an exploded perspective view of the hand-held pliers tool with omitted springs
- Figure 4 shows the tool in plan view in a forceps jaw opening position, omitting cover elements and reproduced in dash-dotted line art slotted guide.
- FIG. 5 shows the enlargement of the region V in FIG. 4, but shown in a sectional plane offset with respect to FIG. 4;
- FIG. 6 shows a representation corresponding to FIG. 4, but omitting the slotted guide, relating to a first intermediate position in the course of a forceps-mouth closing operation
- Fig. 7 is a representation corresponding to FIG. 5, but the position according to
- FIG. 8 is a sequential view of FIG. 6, relating to a further intermediate position in the course of the forceps jaw closing operation;
- FIG. 9 shows a representation corresponding to FIG. 7, but relating to the clamp position according to FIG. 8;
- FIG. FIG. 10 shows a further illustration corresponding to FIG. 4, here the forceps jaw closing position, ie concerning the injection position;
- FIG. 11 shows a further illustration of the pliers tool corresponding to FIG. 4, relating to an intermediate position in the course of the forceps jaw opening procedure;
- FIG. 12 shows an intermediate position corresponding to FIG. 8 in the course of the forceps-maw-closing process, after changing a toggle lever setting by adjusting a support roller;
- FIG. 13 shows a representation corresponding to FIG. 9, but relating to the toggle lever position according to FIG. 12;
- FIG. 14 shows another illustration corresponding to FIG. 8, after further adjustment of the support roller for changing the toggle lever
- FIG. 15 shows the corresponding enlargement of the area XV in FIG. 14 for this purpose
- FIG. 17 shows the pliers in the open position according to the representation in FIG. 4, after unlocking and removing provided press inserts;
- Fig. 18 is a representation corresponding to Fig. 10, concerning a second embodiment. Shown and described is a hand-pliers tool 1 in the form of a crimping pliers. This is hand-operated, ie operated by muscle power alone.
- the pliers 1 initially has a fixed pliers part 2 and a movable pliers part 3 in the usual form. Both pliers parts 2 and 3 are essentially each composed of a hand lever 4, 5 and an associated pliers jaw 6, 7 together.
- the hand lever 4 of the fixed pliers part 2 is rigidly connected to the associated pliers jaw 6.
- the hand lever 5 of the movable pliers part 3 acts via a hinge connection 8 on the associated pliers jaw 7, the hinge axis is aligned transversely to the longitudinal extent of the hand lever 4.
- the pliers parts 2 and 3 are pivotally connected to each other in the area of the pliers jaws 6 and 7 in a known manner via a hinge pin 9, wherein the axis of the hinge pin 9 is aligned parallel to the hinge axis of the articulated connection.
- the forceps jaws 6 and 7 form a forceps jaw 10, which is closed by means of the pivotable arrangement of the forceps jaws 6 and 7 and apparently.
- the forceps jaw 10 defining, facing each other portions of the jaws 6 and 7 each form a receiving portion 11 from.
- this form-locking half-shell-shaped press inserts 12 are used, which are profiled according to the inner wall side of the desired pressing geometry.
- the press inserts 12 are inserted from a pincer jaw broad side into the associated receiving section 11, wherein a radially extended force gene 13 of each press insert 12 in cooperation with the broad side of the jaws 6, 7 forms a stop limit.
- each press insert 12 is provided with a circumferential groove 14. In this engages to secure the press inserts 12 in the receiving position designed as a surface part securing element 15 a.
- This is rotatably supported in the region of the hinge pin 9, wherein the axis of rotation is aligned in extension of the hinge pin axis 9.
- the securing element 15 has a cooperating with the groove 14 sheet 16 and a blade 16 diametrically opposite handle 17.
- a central forceps jaw axis extends parallel to the hinge axis of the hinge pin 9 in the mouth closing position.
- the forceps jaws 6 and 7 can be angled off in particular in the area of the forceps 10 from the plane defined by the broad side of the forceps jaws 6 and 7 be, so that the forceps jaw axis corresponding to the hinge axis occupies a particular acute angle.
- a favorable power transmission via the hand lever 4 and 5 applied to the jaws 6 and 7 forces is achieved by a favorable hand lever / jaw length ratio.
- the effective lever length, in particular of the fixed pliers part 2, measured from the joint axis x of the hinge pin 9 to the end of the hand lever 4, not shown, is approximately 15 times the distance between the hinge axis x and the jaw axis y.
- a toggle K This is formed by a pressure support, which further arranged from one of the fixed pliers part 2 associated hand lever 4 Support roller 18 and attached to the opposite hand lever 5 cam member 19 is. Support roller 18 and cam part 19 cooperate in a rolling process in the course of a pressing operation, whereby the joint axis u of the articulated connection 8 between hand lever 5 and jaw 7 and the axis of rotation v of the support roller 18 represent the outer points of the knee lever K.
- the third point of the toggle lever K ie, in a figurative sense, the knee joint is defined by the Abconsultedlzddling A between curve part 19 and support roller 18.
- the curve part 19 is fastened to a retaining hand lever 4 projecting towards the HaI te- tion portion 20 of the movable hand lever 5 and has a convex curvature 21 in the cooperation area with the support roller 18.
- the axis of rotation v is also aligned correspondingly perpendicular and thus parallel to the hinge axes x and u or in the illustrated embodiment, also parallel to the forceps jaw axis y ,
- the curvature 21 is formed in the exemplary embodiment illustrated by two circular sections which follow one another in the rolling direction and have different radii, the radius r 1 also being approximately 0.4 to 0.8 times in a first curvature section 21 'considered in the rolling direction. further corresponds to about 0.5 times the radius r "of the downstream in the downward curvature portion 21".
- the opposite support roller 18 is provided with a radius r 1 ", which corresponds approximately to an average of the radii r 1 and r" of the cam member 19, but may also be smaller than the radius r 1 or greater than the radius r ".
- the cam member 19 forms a rounded tip in the forward end region, which merges rearwardly, ie facing away from the curvature 21, into a fixing curvature 22 that is likewise convex with respect to the interaction region of the support roller 18 and cam member 19. This has a radius which corresponds to the radius r 1 "of the support roller 18.
- the support roller 18 is shaped as a slide bearing roller. This is rotatably mounted on a pin 23 of an adjusting element 24. This adjusting element 24 is rotatably supported on both sides of the support roller 18 eccentrically to the support roller axis v on the fixed hand lever 4.
- the axis of rotation of the adjusting element 24 is provided in the illustrations with the reference symbol w.
- the adjusting element 24 is provided with a relative to the bearing portions radially extended, dish-like fixing portion 25. This is provided in the region of the peripheral edge over a portion of the circumferential length with groove-like recesses 26. In one of these recesses 26 engages, the peripheral line of the fixing portion 25 to radially inward cross-bolt head 27. As a result of this Form gleicheingriffes Drehfestle- tion of the adjusting element 24 is reached.
- a guide of the movable hand lever 5 and the attached Kurventeils 19 in the course of pivotal movement to open the forceps jaw 10 is achieved by a slotted guide 28.
- This is formed by a swivel movement adapted to the slotted guide slot 29, which in one of the fixed hand lever 4th fixed boom 30 is formed.
- cam slot 29 engages a fixed to the cam member 19, aligned parallel to the hinge axes slide pin 31st
- a positively controlled slotted guide takes place substantially only with a forceps opening movement and possibly with a displacement of the movable hand lever 5 in a secure open position of the forceps muzzle 10 and out of this.
- the backdrop does not work or at least not force translating.
- a Zwangsgesperre 32 is provided between the hand lever 5 and the pivotally arranged therefor jaw 7 .
- This is composed in a conventional manner from a ratchet lever 33 and a cooperating with this toothing 34.
- the toothing 34 is the end face of the forceps jaw 10 opposite end of the jaw 7 formed.
- the ratchet lever 33 is pivotally mounted on the movable hand lever 5 and is loaded via a tension spring 35 in a basic position. The ratchet lever 33 engages in the pivoting region of the forceps jaw-side toothing 34.
- the movable jaw 7 is biased by a further tension spring 36 in the direction of a mouth closing position, which tension spring 36 is attached at one end to the jaw 7 on a radial arm in the region of the joint eye and at the other end to the fixed hand lever 4.
- the pliers 1 remain in a self-holding position in which the forceps jaw 10 is held in the maximum open position in the press insert placement and standby position shown in FIG. Accordingly, the hand lever 4 and 5 are in a spread position.
- the cam member 19 is displaced under cooperation of the slide pin 31 with the link slot 29 in a relation to the support roller 18 considered rear grip position, in which the Festlegekrümmung 22 surface occurs against the facing lateral surface of the support roller 18.
- About the tensioned tension spring 36 acts on the articulated connection 8, a torque on the movable hand lever 5, so on with reference to the illustrations in the clockwise direction. Due to the fact that the force acting on the support roller 18 via the cam member 19 acts with respect to the articulated connection 8 below the support roller pivot axis v, latching is achieved.
- the ratchet lever 33 of the Zwangsgesperres 32 is here outside of the intervention it to the toothing 34th
- a possible offset dimension of the rolling point A to the line z corresponds to a maximum of one-tenth to one fiftieth of the effective rolling length 1 of the curve part 19th
- the toothing 34 of the movable jaw 7 leaves the influence area of the ratchet lever 33.
- the forceps jaw 10 can thereafter be opened by corresponding backward displacement of the hand lever 5, whereby the ratchet lever 33 also locks in the course of the return movement the toothing 34 acts, but here to prevent a re-started from the opening movement closing movement. It needs to re-pressing the first complete opening of the forceps muzzle 10th
- the ratchet lever 33 can also be used for emergency release in the course of injection molding by means of a tool holder 38 that is connected to the ratchet lever 33 in a torque-proof manner. Operation or in the course of the opening process out of engagement with the teeth 34 are brought.
- cam member 19 is replaceable against a cam member 19 with a changed curvature 21st
- the proposed solution can also be used in tong tools 1, which are designed for multi-stage compression, in which preferably both handles 4 and 5 can be enclosed with only one hand and can be achieved by means of these high pressing forces.
- one of the two hand levers 4 and 5 or alternatively also both hand levers 4 and 5 can be provided with lockable and latchable in the respective end positions hand lever sections, which spent after performing a first pressing stage in its second locked position for further, possibly one-handed pressing become.
- Fig. 18 shows an alternative embodiment of the subject invention, which differs from the previously described embodiment only in terms of the interaction of the support portion 20 and lever 5.
- the support portion 20 is formed separately from the hand lever 5.
- the hand lever 5 is supported pivotably on the pivot pin 8 about the axis u.
- the support portion 20 is pivotable about the same axis u as a separate part, the support portion 20 also carrying the cam part 19 here.
- Hand lever 5 and support portion 20 cooperate via a ratchet formation 40.
- the support portion 20 is provided in the region of the hand lever 5 facing the edge with a toothing 41.
- This acts together with a locking tooth 42 of a ratchet lever 43.
- the latter is mounted pivotably about an axis aligned parallel to the axis of rotation u aligned axis on the hand lever 5 and has for manual pivoting operation to release the toothing engagement a handling forts 44 on.
- the ratchet lever 43 is loaded by means of a spring 45 in the tooth engagement position for halte- tion side toothing 41.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Surgical Instruments (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007019228 | 2007-04-24 | ||
DE102007056262A DE102007056262A1 (de) | 2007-04-24 | 2007-11-22 | Hand-Zangenwerkzeug |
PCT/EP2008/053793 WO2008128854A1 (de) | 2007-04-24 | 2008-03-31 | Hand-zangenwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2142340A1 true EP2142340A1 (de) | 2010-01-13 |
EP2142340B1 EP2142340B1 (de) | 2018-09-19 |
Family
ID=39809771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08735599.6A Active EP2142340B1 (de) | 2007-04-24 | 2008-03-31 | Hand-zangenwerkzeug |
Country Status (9)
Country | Link |
---|---|
US (1) | US8286461B2 (de) |
EP (1) | EP2142340B1 (de) |
CN (1) | CN101668612A (de) |
AU (1) | AU2008240857A1 (de) |
DE (1) | DE102007056262A1 (de) |
IL (1) | IL201171A0 (de) |
RU (1) | RU2009143354A (de) |
TW (1) | TW200900206A (de) |
WO (1) | WO2008128854A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102500703A (zh) * | 2011-10-28 | 2012-06-20 | 常州中翔机械制造有限公司 | 一种手动咬口机 |
US9481075B2 (en) * | 2013-02-21 | 2016-11-01 | Jack T Gregory and Nailia R Gregory Co | Hydraulic press pliers power hand tool |
DE102013112572B4 (de) * | 2013-11-14 | 2015-10-29 | Rattunde & Co. Gmbh | Zwillingsgreifer |
EP3012923B1 (de) * | 2014-10-20 | 2017-11-29 | Wezag GmbH Werkzeugfabrik | Presszange |
EP3012924B1 (de) | 2014-10-20 | 2017-12-13 | Wezag GmbH Werkzeugfabrik | Presszange |
US9339939B1 (en) * | 2014-11-18 | 2016-05-17 | Daniel Haney | Device with force multiplying mechanism |
EP3208044A1 (de) * | 2016-02-18 | 2017-08-23 | Wezag GmbH Werkzeugfabrik | Zange mit einem kniehebeltrieb |
TWI614096B (zh) | 2017-01-13 | 2018-02-11 | Sullstar Technologies Inc | 夾鉗工具及可調限位機構 |
DE102017128226A1 (de) * | 2017-11-29 | 2019-05-29 | Rennsteig Werkzeuge Gmbh | Abisolierzange |
US10150153B1 (en) * | 2018-01-09 | 2018-12-11 | Ridge Tool Company | Systems and methods to axially align dies |
CN109465490B (zh) * | 2018-06-07 | 2019-10-18 | 国网浙江省电力有限公司衢州供电公司 | 一种高空自锁悬挂式断线钳 |
EP3834989B1 (de) * | 2019-12-11 | 2022-11-23 | WEZAG GmbH & Co. KG | Handzangenwerkzeug und verfahren zur montage desselben |
US11623328B2 (en) * | 2020-11-25 | 2023-04-11 | Oetiker Tool Corporation | Multi-pump hand tool |
CN214980373U (zh) * | 2021-06-03 | 2021-12-03 | 周利进 | 卡箍钳 |
CN118752443A (zh) * | 2024-05-20 | 2024-10-11 | 展鼎动力控制装置(东莞市)有限公司 | 手动工具和相关旋转运动机构、运动方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1432843A (en) | 1973-04-04 | 1976-04-22 | Rommel Reiner | Tongs |
US4266419A (en) | 1978-07-10 | 1981-05-12 | Thomas & Betts Corporation | Compression tool |
DE10346241B3 (de) * | 2003-10-06 | 2004-08-12 | Wezag Gmbh Werkzeugfabrik | Zange zum Verpressen von Werkstücken |
US7251980B2 (en) * | 2005-04-13 | 2007-08-07 | Latchtool Group Llc | Hydraulically powered gripping tool |
-
2007
- 2007-11-22 DE DE102007056262A patent/DE102007056262A1/de not_active Ceased
-
2008
- 2008-03-31 CN CN200880013647A patent/CN101668612A/zh active Pending
- 2008-03-31 US US12/450,561 patent/US8286461B2/en not_active Expired - Fee Related
- 2008-03-31 RU RU2009143354/02A patent/RU2009143354A/ru unknown
- 2008-03-31 AU AU2008240857A patent/AU2008240857A1/en not_active Abandoned
- 2008-03-31 EP EP08735599.6A patent/EP2142340B1/de active Active
- 2008-03-31 WO PCT/EP2008/053793 patent/WO2008128854A1/de active Application Filing
- 2008-04-07 TW TW097112517A patent/TW200900206A/zh unknown
-
2009
- 2009-09-24 IL IL201171A patent/IL201171A0/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2008128854A1 * |
Also Published As
Publication number | Publication date |
---|---|
TW200900206A (en) | 2009-01-01 |
DE102007056262A1 (de) | 2008-11-06 |
US8286461B2 (en) | 2012-10-16 |
AU2008240857A1 (en) | 2008-10-30 |
CN101668612A (zh) | 2010-03-10 |
EP2142340B1 (de) | 2018-09-19 |
RU2009143354A (ru) | 2011-05-27 |
WO2008128854A1 (de) | 2008-10-30 |
IL201171A0 (en) | 2010-05-17 |
US20100212391A1 (en) | 2010-08-26 |
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