EP3614507B1 - Press- oder crimpzange - Google Patents

Press- oder crimpzange Download PDF

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Publication number
EP3614507B1
EP3614507B1 EP18190465.7A EP18190465A EP3614507B1 EP 3614507 B1 EP3614507 B1 EP 3614507B1 EP 18190465 A EP18190465 A EP 18190465A EP 3614507 B1 EP3614507 B1 EP 3614507B1
Authority
EP
European Patent Office
Prior art keywords
movable
pliers
lever
hand lever
jaw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18190465.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3614507A1 (de
Inventor
Thomas Glockseisen
Roman Zinser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wezag GmbH and Co KG
Original Assignee
Wezag GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wezag GmbH and Co KG filed Critical Wezag GmbH and Co KG
Priority to EP18190465.7A priority Critical patent/EP3614507B1/de
Priority to JP2019140657A priority patent/JP7319856B2/ja
Priority to TW108127367A priority patent/TWI809162B/zh
Priority to US16/540,527 priority patent/US11597064B2/en
Priority to CN201910752363.3A priority patent/CN110856909B/zh
Publication of EP3614507A1 publication Critical patent/EP3614507A1/de
Application granted granted Critical
Publication of EP3614507B1 publication Critical patent/EP3614507B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • 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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/123—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with self-locking toggle levers
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/14—Locking means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping

Definitions

  • the present invention relates to pressing or crimping pliers.
  • the pressing or crimping pliers can be used to manually operate hand levers to press or crimp a workpiece.
  • a generic crimping tool is preferably used for the mechanical fluid-tight connection in fluid technology, for example for connecting pipes to one another or to fluidic connectors.
  • plastic deformation of the pipes to be connected or a so-called fitting ensuring the mechanical connection and the fluid-tight seal takes place by means of the pressing tongs.
  • Exemplary embodiments of a generic pressing tongs can be found in the publications DE 197 09 639 A1 , DE 198 34 859 C2 , DE 199 24 086 C2 , DE 199 24 087 C2 , DE 199 63 097 C1 , DE 103 46 241 B3 , EP 2 995 424 A1 can be removed.
  • DE 10 2007 001 235 B4 discloses a non-generic pressing tongs in which the tong jaws are pivotably coupled to one another via a swivel joint.
  • a first hand lever is articulated on the swivel joint.
  • a second hand lever is articulated with a cranked end area on a first pliers jaw.
  • a third hand lever is arranged between the first hand lever and the second hand lever when the pliers jaws are in an open position.
  • the third hand lever is articulated in a cranked end area on a pendulum support, the other end area of which is articulated on a second pincer jaw.
  • the first hand lever and the third hand lever are coupled to one another via a pivotably articulated pressure lever, a pivot pin for coupling the pressure lever to the third hand lever being fixed on the first hand lever.
  • the three hand levers in two successive partial closing strokes can use different toggle lever drives, optimized for the respective partial closing strokes with regard to the forces and pivoting, as follows: In a first partial closing stroke, the third hand lever is pivoted in the direction of the first hand lever. In this case, the joint between the end region of the third hand lever and the pendulum support forms a knee joint of the first toggle lever drive thus formed.
  • the first hand lever and the third hand lever are oriented parallel to one another and the first toggle lever drive and the first hand lever and the third hand lever are fixed by the user's hands surrounding the two hand levers or by a suitable switching device.
  • the second hand lever is pivoted in the direction of the first and third hand lever.
  • a second toggle lever drive engages the other gripper jaw.
  • a toggle lever is formed by the pressure lever, while the other toggle lever is formed by the cranked end region of the second hand lever and the knee joint is formed by the pivot bearing between the pressure lever and the second hand lever.
  • the three hand levers thus serve to ensure different partial closing strokes of the tong jaws with different closing movements of a sub-combination of the three hand levers.
  • U.S. 3,688,553 relates to crimping pliers for crimping a fitting for a pipe system.
  • a die having a circular cross-section in the closed state is made up of three Die parts formed, each delimiting a partial circumference of the circular cross section of the die.
  • the third die part, which forms a semicircle of the circular cross section of the die in the closed state is provided by a push rod.
  • two hand levers are articulated in their end areas via a pivot pin on the push rod.
  • end regions of pull tabs are also articulated to the hand levers, the other end regions of which are in turn articulated to the housing plates of the pliers head.
  • the slide rod has operating surfaces which are inclined with respect to the sliding direction of the slide rod. Rollers mounted on the end areas of the press jaws roll on these actuating surfaces.
  • the sliding movement of the slide rod brought about by the closing movement of the hand lever thus leads, on the one hand, to the movement of the third die part formed by the slide rod in the sliding and closing direction and, via the actuation by the actuating surfaces of the sliding rod and the rolling contact of the rollers with the actuating surfaces, to the closing movement of the press jaws.
  • the position of the actuating surfaces is chosen so that the fitting is initially pressed into an elongated cross-section through the pressing jaws and only when the pressing jaws reach the closed position does the die part formed by the slide rod come into operative connection with the fitting and the previously created elongated cross-section of the Fittings pressed into the intended circular cross-section.
  • the actuating surfaces of the slide rod are not used and thus no actuation of the pressing jaws via the contact of rollers of the pressing jaws with the actuating surfaces, so that by pivoting the hand levers towards each other, only the third die part formed by the push rod is actuated.
  • there is a third hand lever which is angled in the end area arranged in the pliers head. In the area of the bend, the third hand lever is linked to a press jaw via a pivot pin. The free end area of the angled portion is pivotably connected to an actuating bracket via a pivot pin. The actuating tab is in turn hinged to the other press jaw in the other end area via a pivot pin.
  • the pivot pin coupling the third lever to the actuating tab is guided in an elongated hole in the slide rod.
  • both hand levers and the third hand lever are opened, with which the fitting can be inserted into the jaws of the crimping pliers.
  • the third hand lever is then closed while the two hand levers are still open.
  • the closing movement of the third hand lever has the consequence that the pressing jaws are closed and the fitting is deformed into an elongated pressed state.
  • the closed position reached by the third hand lever is self-locking.
  • the two hand levers can now be pivoted, with which the slide rod moves and the fitting is deformed to the intended circular cross-section through the end face of the slide rod.
  • the closest prior art DE 693 19 628 T2 (Member of the patent family of EP 0 725 708 ) discloses a crimping tool with a fixed pliers part, which forms a fixed hand lever and a fixed pliers jaw.
  • a movable pliers jaw is mounted on the fixed pliers part via a pivot pin.
  • a movement of the movable tong jaw in a closing direction can be brought about via a movable hand lever which is pivotably articulated in one end region on the movable tong jaw and is supported on the fixed tong part via a pressure lever forming a toggle drive.
  • An opening spring acts between the pivot lever and the movable tong jaw, which acts on the one hand on the movable hand lever in the opening direction and on the other hand on the movable tong jaw in the closing direction. If the hand levers are in the open position, the opening spring causes the connection between the movable pliers jaw and the coupling bolt of the hand lever in the area of the parabolic receptacle to be released and the movable pliers jaw to be acted upon in the closing direction. If manual opening forces are applied to the movable pliers jaw in this open position of the hand lever against the action of the opening spring, the pliers jaws formed by the two pliers jaws can be opened and a workpiece can be inserted into the pliers jaws.
  • the opening spring closes the movable tong jaw, whereby the workpiece is clamped between the tong jaws as a result of the action of the opening spring. If the two hand levers are then moved towards one another, the coupling bolt enters the parabolic recess of the movable pliers jaw, with which the actual pressing of the workpiece can then take place by actuating the hand lever.
  • the non-generic publication EP 0 860 245 A2 relates to a pressing device with an electric or hydraulic drive for pressing a pipe with a press fitting.
  • the drive has a housing which, in the area of the center of gravity of the pressing device, forms a gripping surface that can be grasped by the user's hand.
  • the pressing jaws are coupled to one another via a coupling rod, a coupling frictional connection or a coupling toothing in such a way that a manual pivoting of one pressing jaw in an opening direction is coupled with a corresponding pivoting of the other pressing jaw in the opening direction.
  • a press jaw In order to enable one-handed operation (with the user's hand encompassing the grip area of the housing) also for the manual transfer of the press jaws into the open position, a press jaw has an extension that can be acted upon directly by the thumb of the hand in order to move the press jaw (and thus also the other press jaw) to be transferred into the open position.
  • EP 0 860 245 A2 propose to pivot an additional actuating lever on the housing, one end area of which can then be actuated by the user's thumb, while the other end area can act on the extension of the press jaw to move the press jaws into the open position.
  • the invention relates to pressing or crimping pliers of basically any type (cf. also the prior art mentioned at the beginning), provided that these have a fixed pliers part with a fixed hand lever and a fixed pliers jaw.
  • the fixed pliers part can be designed in one or more parts.
  • the pressing or crimping pliers according to the invention have a movable hand lever.
  • the movable hand lever is coupled to a movable pliers jaw via a drive mechanism.
  • the drive mechanism can be designed as any gear connection with a suitable step-up or step-down of the forces and paths.
  • the coupling of the movable hand lever via the drive mechanism to the movable tong jaw is such that a closing movement of the movable tong jaw can be brought about by pivoting the movable hand lever in the direction of the fixed hand lever.
  • a closing movement of the movable pincer jaw With this closing movement of the movable pincer jaw, a workpiece is crimped or pressed between the fixed pincer jaw and the movable pincer jaw, in particular in the area of dies held or formed by the pincer jaws.
  • the invention surprisingly proposes equipping the crimping or crimping pliers (in addition to the fixed hand lever and the movable hand lever) with a further lever.
  • the further lever is coupled to the movable pliers jaw via a drive connection.
  • the coupling via the drive connection is such that with a pivoting of the further lever an opening movement of the tong jaws into an insertion and / or removal position can be brought about.
  • the movement of the further lever is permanently coupled to the movement of the movable hand lever, so that the movable hand lever and the further lever have the same pivoting or different pivoting movements with a fixed predetermined or structurally when one of the two levers is actuated experience given varying transmission ratio.
  • the movement of the further lever is decoupled from the movement of the movable hand lever over a partial stroke or over the entire stroke, so that it is possible to pivot the further lever while the movable hand lever is not pivoted at the same time (and / or the other way around).
  • the different levers provided can be used for different purposes within the scope of the invention: While the crimping or pressing of a workpiece can be brought about by a closing movement of the pliers jaws as a result of manual actuation of the movable hand lever, the manual actuation of the further lever can be used to bring about an opening movement of the jaws in an insertion and / or removal position in which the insertion and / or removal of a workpiece is made possible or simplified.
  • the further lever is arranged in the grip area of a hand that encloses the fixed hand lever and / or the movable hand lever, or a finger of this hand, so that, for example, the hand can actuate the movable hand lever without any reaching around or with minimal effort
  • Hand lever for bringing about the closing movement of the tong jaws for crimping or pressing a workpiece can be brought about and, on the other hand, the opening movement of the tong jaws into the insertion and / or removal position can be brought about by actuating the further lever.
  • the further lever can have any (for example, straight or cranked) shape and / or have any length.
  • the further lever is an additional hand lever which is arranged between the fixed hand lever and the movable hand lever.
  • This design uses a space that is already present between the fixed hand lever and the movable hand lever for the arrangement of the additional hand lever.
  • the additional hand lever and the movable hand lever are pivoted in the same pivot plane. It is possible that the end region of the additional hand lever facing away from the pliers head of the crimping pliers or crimping pliers lies in the region of the pivoting circle of the corresponding end region of the movable hand lever or lies outside or inside the same.
  • the further lever extends outside a space between the two hand levers and extends upward out of a housing of the crimping pliers formed with the fixed pliers part plates.
  • the further lever is arranged and designed in such a way that an actuation of the further lever by a finger, in particular a thumb of the hand, is possible for the user's hand placed on the fixed hand lever.
  • the actuation kinematics for the actuation of the additional hand lever and the transmission of the movement of the additional hand lever to the movable pliers jaw can be any.
  • the additional hand lever is coupled to the movable pliers jaw via the drive connection so that an opening movement of the pliers jaws can be brought about by pivoting the additional hand lever in the direction of the fixed hand lever.
  • the user takes the fingers off the additional hand lever and places them on the outside of the movable hand lever, while the inner surface of the hand continues to be supported on the outside of the fixed hand lever can. The user can then apply the necessary forces to the movable hand lever with his fingers in order to bring about the closing movement of the pliers jaws for crimping or pressing a workpiece.
  • the drive connection is a fixed connection between the additional hand lever and the movable pliers jaw.
  • the additional hand lever is designed as an integral component with the movable tong jaw or the additional hand lever and the movable tong jaw are designed as separate components that are directly or indirectly and detachable or non-detachable, but in any case with are connected to each other by a fixed connection. In this way, a structurally simple but reliable drive connection can be provided.
  • the crimping pliers have an opening spring.
  • the opening spring acts on the movable pliers jaw and / or the movable hand lever (directly or indirectly) in such a way that the movable pliers jaw and / or the movable hand lever are / is automatically moved from a closed position in an opening direction. This is particularly advantageous when the pressing or crimping pliers have reached the closed position in which the workpiece is completely crimped or pressed.
  • the opening spring can then automatically open the movable pliers jaw and / or the movable hand lever when the manual forces applied to the fixed hand lever and the movable hand lever are reduced or eliminated, which increases the ease of use of the crimping or crimping pliers.
  • the pressing or crimping pliers can have a closing spring.
  • the closing spring acts on the movable tong jaw and / or the further lever in such a way that the movable tong jaw is acted upon in the closing direction and / or the further lever is automatically moved from a closed position in the direction of an open position.
  • a closing spring force generated by the closing spring and acting on the moving pliers jaw in the closing direction can be used, for example, to act on the further after the insertion and / or removal position has been brought about by actuating the further lever and inserting the workpiece into the dies Lever is reduced or eliminated by the user, while the closing spring force then acts on the movable pliers jaw in the closing direction.
  • the workpiece is thus clamped between the two pliers jaws with the closing spring force, so that it can be fixed between the dies in the position and / or orientation previously brought about manually.
  • the workpiece it is also possible for the workpiece to be readjusted for such a workpiece fixed in the dies between the tong jaws by the user pushing the workpiece into a different orientation and / or position, which then causes the tong jaws to spring open against the action of the closing spring or a frictional sliding movement of the workpiece against the dies acted upon by the closing spring.
  • an opening spring and / or a closing spring can be formed by a single spring or also a plurality of springs, which can then be arranged in parallel or in series.
  • the at least one spring can be made from any material (for example metal, plastic, elastomer material, composite material). It can be a compression spring, a tension spring, a torsion spring, a torsion spring or a spring of any other type.
  • the at least one spring can be integrated at any point in the force flow of the pressing or crimping pliers. At least one spring with a linear or a non-linear spring characteristic can be used.
  • the closing spring is articulated with one spring base point on the fixed pliers part, while it is articulated with the other spring base point on the movable pliers part.
  • the opening spring it is possible for the opening spring to be articulated with one spring base point on the fixed pliers part, while it is articulated with the other spring base point on the movable hand lever.
  • the invention also includes embodiments in which the opening spring and the closing spring are formed from a single integral spring element, see in particular the one not previously published European patent application EP 3 553 899 A1 .
  • the invention comprises embodiments in which the drive mechanism for coupling the movable hand lever to the movable pliers jaw is permanently effective, so that when the movable pliers jaw is moved by the further lever, the movable hand lever is also moved as a result of the coupling via the drive mechanism.
  • the drive mechanism via which the movable hand lever is coupled to the movable pliers jaw, has play.
  • the game is limited by a stop.
  • a drive element of the drive mechanism is on the Stop at what the game is not effective and a backlash-free transmission of the press or Crimping force can be done.
  • the further lever is pivoted with an opening movement of the tong jaws into the insertion and / or removal position, the drive element moves in the direction of the stop, so that a movement takes place using the play. This has the consequence that for the opening movement to bring about the insertion and / or removal position by actuating the further lever, the movable hand lever is not moved along despite the opening movement of the pliers jaws, which under certain circumstances simplifies the operation of the crimping or crimping pliers.
  • the play can be dimensioned as desired, so that the explained effect occurs only for a partial movement or the explained entire movement.
  • the game is at least so large that in an open position of the moved hand lever depending on the position of the further lever and caused by this, the movable pliers jaw can be moved from the closed position to the open position without the movable hand lever being in its open position leaves. In this way it can be ensured that there is no change in the pivoting angle of the movable hand lever during the entire actuation of the further lever.
  • the opening spring does not exert any opening spring force on the movable pliers jaw in an open position of the movable hand lever, with the result that the closing spring force of the closing spring is not reduced by the action of the opening spring.
  • the closing spring exerts a closing spring force on the movable pliers jaw.
  • This closing spring force is minimal in a closed position of the further lever, while it is maximal in an open position of the further lever.
  • the closing spring can be relaxed in the closed position of the further lever, so that the minimum closing spring force is zero.
  • the closing spring force is already greater than zero, so that it is always pretensioned. In this way, the closing spring can ensure, for example, that even when a small workpiece is inserted into the dies formed or carried by the pliers jaws, the workpiece is secured with a sufficient closing spring force between the dies.
  • the drive mechanism has an elongated hole which provides the game.
  • the stop is formed from an end region of the elongated hole. This configuration represents a simple but reliable option for providing the game and the stop.
  • any drive mechanism can be used in the crimping or crimping pliers.
  • the drive mechanism is preferably a toggle lever drive.
  • the play and the stop are provided in the toggle lever drive in that the toggle lever drive has a pivot pin, which can be a pivot pin of a joint for a toggle lever or a pivot pin to form the toggle joint.
  • the pivot pin can be accommodated in an elongated hole, with the result that the required play and the stop can be provided.
  • pressing or crimping pliers For a further embodiment of the pressing or crimping pliers, it is proposed that these have a compulsory lock. Automatic locks are used to secure a closed position of the pliers jaws during the crimping or pressing of the workpiece, so that the pliers jaws do not open undesirably if the operating force is temporarily reduced by the user or the hand is removed from the press during the pressing or crimping stroke - or crimping pliers are used.
  • the automatic locking mechanism should enable the pressing or crimping pliers to be reopened when a closed position is reached.
  • the automatic locking mechanism here does not secure the position of the movable pincer jaw over the entire possible range of movement of the movable pincer jaw. Rather, the automatic locking mechanism does not block a movement of the movable pincer jaw caused by the further lever, while the automatic locking mechanism blocks a movement of the movable pincer jaw caused by the movable hand lever.
  • the automatic lock is not effective if the removal and / or insertion position is to be brought about by actuating the further lever so that an opening movement is possible, while the automatic lock is intended to enable the closing movement for crimping or pressing a workpiece with simultaneous securing of a thereby reached closed position.
  • the actual pressing or crimping stroke is carried out, which (possibly after a certain idle stroke) runs from the starting position to the closed position.
  • the illustrated embodiment of a crimping pliers 1 has a fixed pliers part 2 and a movable pliers part 3.
  • the fixed pliers part 2 has a fixed pliers jaw 4 and a fixed hand lever 5, which are firmly connected to one another.
  • the movable gripper part 3 has a movable gripper jaw 6.
  • the fixed gripper part 2 and the movable gripper part 3 are pivotably connected to one another via a pivot bearing 7.
  • a movable hand lever 9 is pivotably articulated on the fixed pliers part 2 via a pivot bearing 8.
  • the movable hand lever 9 is coupled to the movable pliers part 3 via a drive mechanism 10 in such a way that, by means of a manual pivoting of the movable hand lever 9 relative to the fixed hand lever 5, the movable pliers part 3 and thus the movable pliers jaw 6 are pivoted relative to the fixed pliers jaw 4 can be brought about.
  • the pliers jaws 4, 6 directly form dies for pressing or crimping a workpiece.
  • the tong jaws 4, 6 carry dies via suitable receptacles, with the receptacles and dies here corresponding to FIG U.S. Patent 6,053,025 A , the disclosure of which is made the subject of the present patent application.
  • the drive mechanism 10 is designed as a toggle lever drive 11.
  • the toggle lever drive 11 has a toggle lever 13 designed as a pressure lever 12, while the other toggle lever 14 is formed by a cranked end region of the movable hand lever 9.
  • the two toggle levers 13, 14 are pivotably connected to one another via a toggle joint 15.
  • the toggle lever 14 is formed by the cranked material area of the movable hand lever 9 between the pivot bearing 8 and the toggle joint 15.
  • the end region of the toggle lever 13 facing away from the knee joint 15 is articulated to the movable pliers part 3 via a pivot bearing 16.
  • the toggle levers 13, 14 in the storage position 55 form a knee angle which is in the range from 90 ° to 120 °.
  • the knee angle can be increased, the knee angle in the closed position being between 170 ° and 180 °, for example, so that with the closing movement, the knee angle approaches the extended position with the associated large Power development of the toggle lever drive 11.
  • Fig. 3 shows the crimping pliers 1 without operating forces applied by the user and without a workpiece inserted in dies 53, 54.
  • the closing spring 36 the movable pliers part with the movable pliers jaw 6 or their dies 53, 53 is in the closed position, so that the pliers jaws are open. This closed position correlates with an open position of the additional hand lever 49.
  • the closing spring 36 is in the state of minimal closing spring force.
  • the closing spring force can be zero or it can already be greater than zero. If the drive mechanism 10 did not have the play 50, the closed position of the tong jaws 4, 6 would correlate with the closed position of the movable hand lever 9. However, since the game 50 is provided here by the elongated hole 51 of the pressure lever 12, the opening spring 42 can move the movable hand lever 9 into the open position. In the operating position according to Fig. 3 also has the Opening spring 42 has a minimum opening spring force acting in the opening direction. The operating position according to Fig. 3 can also be referred to as storage position 55.
  • the additional hand lever 49 is manually pivoted out of its open position according to FIG Fig. 3 in its closed position according to Fig. 4 .
  • the movable hand lever 9 can remain in its open position.
  • the pivot pin 23 slides along the elongated hole 51. The pivoting of the additional hand lever 49 increases the closing spring force of the closing spring 36.
  • a workpiece 57 can be inserted into the jaws of the pliers and between the dies 53, 54 in the insertion and / or removal position 56 brought about in this way.
  • the action of the closing spring 36 results in an automatic movement of the additional hand lever 49 in the opening direction, which is accompanied by a closing movement of the movable pliers part 3.
  • This closing movement takes place until a holding position 58 according to FIG Fig. 5 is reached.
  • the closing spring force exerted by the closing spring 36 on the movable pliers part 3 is supported by the fact that the workpiece is clamped between the pliers jaws 4, 6 or between the dies 53, 54. This clamping as a result of the closing spring force secures the position and / or orientation of the workpiece 57 with respect to the dies 53, 54.
  • the closing spring force of the closing spring 36 has decreased, and even when a small workpiece 57 is used, due to the design of the closing spring 36, it is still large enough to ensure that the position and / or orientation of the workpiece 57 is maintained.
  • the opening spring force of the opening spring 42 is still unchanged.
  • the pivot pin 23 has moved a part of the way along the elongated hole 51, the pivot pin 23 still being arranged at a distance from the stop 52 of the elongated hole 51. The remaining distance depends on the Pivot pin 23 from the stop 52 on the size of the workpiece 57 in the unpressed or uncrimped state.
  • the actual pressing or crimping stroke can then be carried out, at the end of which the closed position 60 according to FIG Fig. 7 is achieved.
  • the game 50 is eliminated during the press or crimp stroke.
  • the pivot pin 23 no longer has the translational degree of freedom provided by the elongated hole 51 during the press or crimp stroke. Rather, the pivot pin 23 rests against the stop 52 for the purpose of power transmission in the toggle lever drive 11, a pivoting movement still being possible in the area of the stop 52 and the knee joint 15 provided therewith.
  • the opening spring 42 is further applied the dies 53, 54 pressed or crimped.
  • the closing spring force generated by the closing spring 36 also ensures that the crimped workpiece 57 is clamped between the jaws 4, 6, here between the dies 53, 54 and cannot fall out of the dies 53, 54.
  • the effect of the opening spring 42 leads to a pivoting of the hand lever 9 from the closed position according to FIG Fig. 7 in the open position according to Fig. 8 he follows.
  • the play 50 of the drive mechanism 10 is used. For the exemplary embodiment shown, this means that the pivot pin 23 moves away from the stop 52.
  • the movable pliers part 3 and the movable pliers jaw 6 can be transferred into the insertion and / or removal position 56 by actuating the additional hand lever 49 (cf. Fig. 9 ).
  • an intermediate space formed between plates of the crimping pliers 1, here fixed pliers sub-plates 17 and / or movable pliers sub-plates 18, is closed or sealed to the outside by a cladding 61, for example made of plastic.
  • the cladding 61 is roughly T-shaped with a web 62 formed by a vertical leg he follows.
  • a corresponding cladding 63 extends in the area of the outer end faces of the fixed pliers part plates 17.
  • the cladding 63 has outer fastening eyelets 64, the function of which will be described below.
  • the crimping pliers 1 only has a mechanical pliers part 65.
  • the crimping pliers 1 according to FIG Fig. 10 in addition to the mechanical pliers part 65 via an electronics module 66.
  • the design of the electronics module 66, its functions, its coupling with the mechanical pliers part 65 and / or its power supply and its wireless or wired communication can / can correspond to that not previously published European patent application EP 3 572 188 A1 be designed, which is made the subject of the present patent application in this regard.
  • the electronic assembly 66 has a housing which is formed with two half-shell-like housing parts 67, 68, it being possible for a transparent cover plate 69 to form a viewing window for a display or a display 70 to be arranged in a housing part 67, 68.
  • a circuit board 71 is arranged in an intermediate space arranged between the housing, here a housing part 67 and the mechanical pliers part 65.
  • the housing parts 67, 68 are latched, locked or pressed with one another and with the fastening eyes 64 by means of suitable connecting pins and receptacles.
  • the latter can have a holder 72 with a battery or a rechargeable accumulator 73.
  • the bracket 72 is held on the fixed pliers part 2, here in the area of the fixed hand lever part 19, which is already in the Figures 1 to 9 has been shown, although this is not necessary here for the purely mechanical design of the crimping pliers 1. It is possible that a handle 74 is pushed onto the fixed hand lever part 19, in the interior of which the holder 72 with the battery 73 is then received.
  • the handle 74 can then be fixed to the fixed pliers part 2, here the fixed hand lever part 19, which can also be done by a latching and / or locking connection, for example with a releasable connection by pressing a push button to unlatch the handle 74 can, which can be arranged, for example, on the inner side facing the other hand lever 9.
  • the removal of the handle 74 can be used to replace a battery or an accumulator 73.
  • Fig. 11 and 12th show an embodiment of a crimping pliers 1, which, apart from the differences mentioned below, essentially corresponds to the embodiment of the crimping pliers 1 according to Figures 1 to 9 is equivalent to.
  • the pressure lever 12 does not have an elongated hole 51, so that the drive mechanism 10 also has no play 50.
  • the additional hand lever 49 is actuated for the purpose of transferring the movable pliers jaw 6 into the insertion and / or removal position 56, the movable hand lever 9 is also pivoted (further) in the opening direction.
  • the illustrated embodiment also the closing spring 36 and the opening spring 42 designed differently and integrated into the crimping tool 1:
  • the closing spring 36 and the opening spring 42 are designed here as an integral spring device 75, which is a U-shaped spiral spring 76, the two elastic having interconnected side legs 77, 78.
  • the side limb 77 is supported in its free end region on a support 79 which is formed or held by the movable pliers part 3.
  • the side leg 77 is also supported on a support 80 which is formed or supported by the fixed pliers part 2.
  • the other side limb 78 is supported in one end region on a support 81 which is formed or held by the movable pliers part 3.
  • the side leg 78 is supported on a support 82 which is formed or supported by the fixed pliers part 2.
  • the functioning of the crimping pliers 1 is changed as follows: In Fig. 12 the spring device 75 is supported between the two supports 80, 82 on the fixed pliers part 2 and is thus caught. It is therefore a stable equilibrium position. An actuation of the additional hand lever 49 results in the support 79 taking the side leg 77 with it, while the side leg 78 continues to be supported on the support 82. The spring device 75 is thus compressed and generates a closing spring force. During this movement caused by the additional hand lever 49, the side leg 77 is released from the support 80 and the side leg 78 from the support 81.
  • a spring device 75 acts generated closing spring force, which the movable pliers jaw 6 back to the starting position according to Fig. 12 want to move back.
  • a workpiece 57 is also clamped here, provided the dimensions of the workpiece 57 are so large that clamping takes place with the movable gripper jaw 6 in a position that is wider than in the starting position according to FIG Fig. 12 .
  • the support 61 moves the side leg 78 with it, so that the side leg 78 detaches from the support 82.
  • the side limb 77 is supported on the support 80 during the crimping or pressing stroke, while the support 79 moves away from the side limb 77.
  • the spring device 75 thus generates an opening spring force during the press or crimp stroke which, when the closed position is reached, for an automatic opening movement caused by the spring device 75 into the starting position according to FIG Fig. 12 can be used.
  • Fig. 13 shows an embodiment of the crimping pliers 1 in which the drive mechanism 10 has no play 50.
  • the kinematics of the actuation of the crimping pliers 1 is in accordance with Fig. 13 designed according to the embodiments described above.
  • the movable hand lever 9 has a lever part 83 which acts on a closing spring 36 for a movement from the starting position into the insertion and / or removal position, while the lever part 83 is used to carry out the pressing or crimping stroke from the starting position to an opening spring 42 is applied to the closed position.
  • the opening spring 42 and the closing spring 36 can only follow the lever part 83 on different sides by means of suitable stops only up to the starting position.
  • the illustrated embodiment of the crimping tool 1 basically corresponds to that in Figures 1 to 9 illustrated embodiment.
  • the further lever 48 is not designed as an additional hand lever 49 which is arranged between the two hand levers 5, 9. Rather, for this exemplary embodiment, the further lever 48 extends outside the space between the two hand levers 5, 8.
  • the further lever 48 extends upward out of a housing of the crimping pliers 1 formed with the fixed pliers part plates 17. It is possible that the further lever 48 is arranged and designed in this case in such a way that actuation of the further lever 48 by a finger, in particular a thumb of the hand, is possible for the user's hand placed on the fixed hand lever 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Forging (AREA)
EP18190465.7A 2018-08-23 2018-08-23 Press- oder crimpzange Active EP3614507B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP18190465.7A EP3614507B1 (de) 2018-08-23 2018-08-23 Press- oder crimpzange
JP2019140657A JP7319856B2 (ja) 2018-08-23 2019-07-31 圧縮または圧着工具
TW108127367A TWI809162B (zh) 2018-08-23 2019-08-01 壓緊或壓接鉗
US16/540,527 US11597064B2 (en) 2018-08-23 2019-08-14 Pressing tongs or crimping pliers
CN201910752363.3A CN110856909B (zh) 2018-08-23 2019-08-15 压紧或压接钳

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18190465.7A EP3614507B1 (de) 2018-08-23 2018-08-23 Press- oder crimpzange

Publications (2)

Publication Number Publication Date
EP3614507A1 EP3614507A1 (de) 2020-02-26
EP3614507B1 true EP3614507B1 (de) 2021-09-01

Family

ID=63371567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18190465.7A Active EP3614507B1 (de) 2018-08-23 2018-08-23 Press- oder crimpzange

Country Status (5)

Country Link
US (1) US11597064B2 (zh)
EP (1) EP3614507B1 (zh)
JP (1) JP7319856B2 (zh)
CN (1) CN110856909B (zh)
TW (1) TWI809162B (zh)

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DE202023000293U1 (de) 2023-02-09 2023-03-02 FORSCHUNGSGEMEINSCHAFT WERKZEUGE und WERKSTOFFE E.V. FGW Werkzeug zum Crimpen von Bauelementen
EP4243222A1 (de) 2022-03-09 2023-09-13 WEZAG GmbH & Co. KG Crimpzangen-kraftsensor und crimpzange
DE102023000399A1 (de) 2023-02-09 2024-08-14 FORSCHUNGSGEMEINSCHAFT WERKZEUGE und WERKSTOFFE E.V. FGW Werkzeug zum Crimpen von Bauelementen

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EP3820001B1 (de) 2019-11-11 2022-08-17 WEZAG GmbH & Co. KG Crimpzange und gruppe von crimpzangen
AR124767A1 (es) * 2020-10-31 2023-05-03 Armor Tool Llc Pinza de cierre ajustable y conjunto de cierre para usar con la misma
USD957222S1 (en) * 2021-03-26 2022-07-12 Guangzhou Baomei Network Technology Co., Ltd. Crimping jaws for a crimping tool
PL438535A1 (pl) * 2021-07-20 2023-01-23 Zakład Aparatury Elektrycznej Ergom Spółka Z Ograniczoną Odpowiedzialnością Praska ręczna do zaciskania końcówek kablowych na przewody elektryczne
PL132007U1 (pl) * 2021-07-20 2024-08-05 Zakład Aparatury Elektrycznej Ergom Spółka Z Ograniczoną Odpowiedzialnością Praska ręczna do zaciskania końcówek kablowych na przewody elektryczne
CN117293617B (zh) * 2023-11-22 2024-02-02 成都工业职业技术学院 一种网线钳

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EP4243222A1 (de) 2022-03-09 2023-09-13 WEZAG GmbH & Co. KG Crimpzangen-kraftsensor und crimpzange
DE202023000293U1 (de) 2023-02-09 2023-03-02 FORSCHUNGSGEMEINSCHAFT WERKZEUGE und WERKSTOFFE E.V. FGW Werkzeug zum Crimpen von Bauelementen
DE102023000399A1 (de) 2023-02-09 2024-08-14 FORSCHUNGSGEMEINSCHAFT WERKZEUGE und WERKSTOFFE E.V. FGW Werkzeug zum Crimpen von Bauelementen

Also Published As

Publication number Publication date
US11597064B2 (en) 2023-03-07
CN110856909A (zh) 2020-03-03
TWI809162B (zh) 2023-07-21
EP3614507A1 (de) 2020-02-26
CN110856909B (zh) 2022-05-27
TW202009105A (zh) 2020-03-01
JP7319856B2 (ja) 2023-08-02
US20200061785A1 (en) 2020-02-27
JP2020097093A (ja) 2020-06-25

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