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WO2015180012A1 - 一种钳口平移的板钳 - Google Patents

一种钳口平移的板钳 Download PDF

Info

Publication number
WO2015180012A1
WO2015180012A1 PCT/CN2014/078401 CN2014078401W WO2015180012A1 WO 2015180012 A1 WO2015180012 A1 WO 2015180012A1 CN 2014078401 W CN2014078401 W CN 2014078401W WO 2015180012 A1 WO2015180012 A1 WO 2015180012A1
Authority
WO
WIPO (PCT)
Prior art keywords
jaw
link
handle
wrench
translating
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.)
Ceased
Application number
PCT/CN2014/078401
Other languages
English (en)
French (fr)
Inventor
王暋
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.)
Hangzhou Great Star Tools Co Ltd
Hangzhou Great Star Industrial Co Ltd
Original Assignee
Hangzhou Great Star Tools Co Ltd
Hangzhou Great Star Industrial Co Ltd
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 Hangzhou Great Star Tools Co Ltd, Hangzhou Great Star Industrial Co Ltd filed Critical Hangzhou Great Star Tools Co Ltd
Priority to CA2950205A priority Critical patent/CA2950205C/en
Priority to AU2014396046A priority patent/AU2014396046B2/en
Priority to US14/369,739 priority patent/US9862074B2/en
Priority to PCT/CN2014/078401 priority patent/WO2015180012A1/zh
Priority to EP14893477.1A priority patent/EP3150334B1/en
Publication of WO2015180012A1 publication Critical patent/WO2015180012A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/20—Arrangements for locking the jaws
    • B25B13/22—Arrangements for locking the jaws by ratchet action or toothed bars
    • 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
    • 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
    • B25B7/16—Locking means combined with means for tightening the operating arms of jaws

Definitions

  • the present invention relates to a hand tool for holding a workpiece, and more particularly to a wrench for jaw translation.
  • the jaw translation jaw is a hand tool that holds the workpiece and is suitable for holding a variety of workpieces such as plates, bolts, nuts, and fittings.
  • the wrench that can automatically open the jaws can be operated with one hand when clamping the workpiece. It is not necessary to adjust the jaws according to the size of the workpiece. That is to say, as long as the workpiece can be placed between the two jaws, it can be easily adjusted to the workpiece. size.
  • the invention provides a jaw translation jaw, including
  • first jaw a first handle and a connecting portion connecting the first jaw and the first handle
  • the connecting portion is provided with an elongated hole
  • the long hole has a first side wall and a second side wall, the first side wall and the second side wall Parallel, the first side wall is provided with teeth;
  • a second handle is connected to the connecting portion by a claw disposed in the long hole, the second handle is connected to the claw through the first pin shaft, and the first end of the second handle is provided with a cam;
  • a second jaw slidably coupled to the connecting portion, the second jaw being configured to receive a recess of the cam
  • a first connecting rod is connected to the first handle through a second pin shaft, the first end of the first connecting rod is provided with a first elastic member, and the first elastic member is used for resetting the first connecting rod;
  • a second link connected to the second handle by a third pin, the first end of the second link is provided with a second elastic member, and the second elastic member is used for resetting the second link, the second of the first link
  • the second end of the end and the second link are connected by a fourth pin;
  • the jaw of the jaw translation is provided, the first jaw is a fixed jaw, and the second jaw is a movable jaw, when the operator applies a force on the first handle and the second handle, and the second handle
  • the first end connected claw moves along the second side wall of the long hole of the connecting portion, and drives the second jaw to translate toward or away from the first jaw to form a jaw translation jaw.
  • the second elastic member When an external force acts on the handle of the wrench of the jaw translation, the second elastic member is elastically deformed, the second jaw is translated toward the first jaw, and the degree of tension between the second jaw and the first jaw is reduced.
  • the second link is deployed with the first link, and the second jaw is translated away from the first jaw, so that The second jaw and the first jaw are at the maximum position.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the second elastic member When an external force acts on the handle of the wrench of the jaw translation, the second elastic member is elastically deformed, the second jaw is translated toward the first jaw, and the degree of tension between the second jaw and the first jaw is reduced.
  • the second jaw Until the workpiece is in contact, the external force is continuously applied, the second jaw is subjected to a force exerted by the workpiece away from the first jaw, and the force is transmitted to the cam of the second handle through the recess of the second jaw; the first elastic component
  • the elastic force acts on the first end of the first link in a direction away from the jaw along the first handle, the elastic force generating an opposite force at the second end of the first link, the force passing through the fourth
  • the pin acts on the second link and acts on the second handle through the third pin, the force exerted by the second handle on the workpiece acting on the cam, the elastic force acting on the first elastic member of the third pin, and the action Under the joint action of the external force of the handle and the elastic force of the second elastic member on the
  • the second jaw and the connecting part cannot Sliding; continue to apply a force in the opposite direction, the second handle rotates around the first pin shaft, the cam rotates, and the fourth pin moves in a direction away from the connecting member, and the force arm of the force acts as a wrench for external force acting on the jaw translation
  • the distance of the handle of the handle to the first pin shaft, the resistance arm is the distance from the cam edge to the first pin shaft, and thus the second handle is a labor-saving lever, which can generate a larger clamping force and is transmitted to the first jaw and The clamping surface of the second jaw.
  • the jaw translational wrench provided by the invention adopts two-stage transmission, the first-stage transmission is used for jaw translation, the second-stage transmission is used to provide greater clamping force; when the claw and the first side wall are toothed When it is not engaged, it is the first-stage transmission. When the claw is engaged with the teeth of the first side wall, it is the second-stage transmission, which has higher efficiency.
  • the jaws of the jaw translation are made of sheet metal, and are punched and riveted with a high-strength sheet laminate.
  • the material of the plate is steel or iron.
  • the second jaw is slidably coupled to the connecting portion by a slider disposed in the elongated hole.
  • the second jaw is composed of a plurality of plates, and the plate of the outer layer is riveted to the slider, so that the second jaw is slidably connected with the connecting portion, when the slider moves along the second side wall of the long hole, the second The jaws translate toward or away from the first jaw.
  • the second jaw having a groove, the first edge having a gap with the groove, so that the groove is along One edge moves.
  • the intermediate plate of the second jaw is shorter than the outer plate, forming a groove, and a gap is formed between the first edge and the groove to move the groove along the first edge, further ensuring the second along the long hole of the slider As the side wall moves, the second jaw translates toward or away from the first jaw.
  • the jaws of the jaw translation are made by a forging process.
  • the connecting portion is provided with a guiding groove which is parallel with the first side wall of the long hole of the connecting portion, the second jaw has a groove, and the side wall of the groove is provided with an elongated protrusion toward the side of the connecting portion, and the elongated convex portion
  • the guide groove is embedded to slidably connect the second jaw to the connecting portion. The second jaw translates toward or away from the first jaw as the elongate projection moves along the guide slot.
  • the first elastic member is a tension spring.
  • the first link is straight and a stop is provided on the first handle. Further preventing the rotation angle of the first link from being too large, the fourth pin shaft is at or over the line connecting the second pin shaft and the third pin shaft, causing the link mechanism to be stuck.
  • the first link is a fold. Further preventing the rotation angle of the first link from being excessive, the fourth pin shaft crossing the line connecting the second pin shaft and the third pin shaft causes the link mechanism to be stuck.
  • the second elastic member is a torsion spring.
  • the torsion force generated by the torsion spring on the second link causes the second link and the first link to be in an unfolded state, thereby causing the second jaw to be first
  • the jaws are in the most open position.
  • the torsion spring When an external force acts on the handle of the wrench of the jaw translation, the torsion spring is twisted, the second jaw is translated toward the first jaw, and the degree of tension between the second jaw and the first jaw is reduced until When the workpiece is in contact, when the external force does not act, the second link is unfolded with the first link under the torsion force of the torsion spring, and the second jaw is translated away from the first jaw, so that the second jaw and the first jaw In the position with the greatest degree of tension.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the second elastic member is a tension spring.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the jaw-translating wrench further includes a locking mechanism for preventing movement of the second jaw away from the first jaw.
  • the locking mechanism can be used to maintain the clamped state without continuously applying a force on the handle of the jaw of the jaw translation, thereby liberating the operator's hand. , other operations in the clamped state are completed.
  • the locking mechanism includes a first end and a third link of the second link, the first end of the second link is fan-shaped, and the teeth are disposed at the edge of the fan; the first end of the third link passes through the fifth pin and the first The two handles are connected, the second end of the third link is provided with a push button, and the third link is provided with a tooth toward a side of the first end of the second link.
  • An external force is applied to the handle of the jaw of the jaw translation, and the opening between the second jaw and the first jaw can be further reduced.
  • the push button When it is not necessary to maintain the opening between the second jaw and the first jaw, the push button is pushed in a direction away from the second jaw, and the teeth of the third link and the sector edge of the second link are no longer Engagement, the second link is deployed with the first link under the action of the second elastic member, and the second jaw is translated away from the first jaw such that the second jaw and the first jaw are in the position of maximum tension.
  • a card slot is provided on the second handle.
  • the card slot is used to limit the position of the push button so that the push button is in a position where the teeth of the third link do not mesh with the teeth of the sector edge of the second link, that is, the locking mechanism is in the unlocked position.
  • the locking mechanism includes a third resilient member.
  • the third elastic member is for applying a force toward the third link toward the third link, and when the teeth of the third link mesh with the teeth of the sector edge of the second link, the teeth and the teeth can stably mesh even if An external force is applied to the handle of the jaw of the jaw translation, and the opening between the second jaw and the first jaw is further reduced, and the tooth can be re-stable after being disengaged from the tooth, thereby making the locking mechanism stable and reliable. The movement of the second jaw away from the first jaw is prevented.
  • the third elastic member is a torsion spring.
  • a scale is provided on the connecting portion, and the scale is used to measure the distance between the first jaw and the second jaw.
  • Clamp translation is suitable for holding a variety of workpieces, such as round tubes, plates, bolts and nuts;
  • the first stage drive is used for jaw translation
  • the second stage drive is used to provide greater clamping force; when the jaws are not engaged with the teeth of the first side wall, the first stage is driven, when the claws and the first side When the teeth of the wall are engaged, the second stage is driven.
  • Can provide greater clamping force Has a higher effect.
  • the two-stage transmission when the external force no longer acts on the handle of the jaw of the jaw translation, firstly, under the elastic force of the first elastic member, the first link rotates, so that the fourth pin is oriented toward the connecting member. Moving, removing the large clamping force between the first jaw and the second jaw; at this time, the claw is disengaged from the teeth of the first side wall, and the structure is not damaged, and the jaw of the jaw is translated. Longer service life.
  • the jaw-translating wrench further includes a locking mechanism for preventing movement of the second jaw away from the first jaw, and when the jaw-translating wrench is in a position to clamp the workpiece, the locking mechanism can be used to maintain the clamped state. Instead of continuously applying a force on the handle of the wrench that translates the jaws, the operator's hand can be released to complete other operations in the gripped state.
  • FIG. 1 is a schematic structural view of a jaw-translating wrench of an embodiment of the present invention
  • Figure 2 is a schematic view showing the structure of the jaw translation jaw of the jaw shown in Figure 1 opened to the maximum position;
  • Figure 3 is a schematic view showing the structure of the locking mechanism of the jaw translation of the jaw shown in Figure 1 in a locked position;
  • Figure 4 is a schematic view showing the structure of the locking mechanism of the jaw translation of the jaw shown in Figure 1 in an unlocked position;
  • Figure 5 is a schematic view showing the structure of a multi-layer sheet of the movable jaw of the jaw-translating wrench shown in Figure 1;
  • FIG. 6 is a schematic structural view of a jaw of a jaw translated by another embodiment of the present invention.
  • Figure 7 is a side elevational view of the movable jaw of the jaw translated jaw of Figure 6.
  • the jaw translational wrench of one embodiment of the present invention includes
  • the first jaw 1, the first handle 2 and the connecting portion 3 connecting the first jaw 1 and the first handle 2, the connecting portion 3 is provided with an elongated hole 31 having a first side wall 311 and a second side wall 312
  • the first sidewall 311 is parallel to the second sidewall 312, and the first sidewall 311 is provided with a tooth;
  • the second handle 5 is connected to the connecting portion 3 through the claw 52 disposed in the long hole 31, the second handle 5 and the claw 52 are connected by the first pin 71, the first end of the second handle 5 is provided with a cam 51;
  • the second jaw 4 is slidably connected to the connecting portion 3, and the second jaw 4 is provided with a recess 41 for accommodating the cam 51;
  • the first link 61 is connected to the first handle 2 through the second pin 72.
  • the first end of the first link 61 is provided with a first elastic member 81, and the first elastic member 81 is used for resetting the first link 61;
  • the second link 62 is connected to the second handle 5 via a third pin 73.
  • the first end of the second link 62 is provided with a second elastic member 82, and the second elastic member 82 is used for resetting the second link 62.
  • the second end of the first link 61 and the second end of the second link 62 are connected by a fourth pin 74;
  • the first jaw 1 is a fixed jaw
  • the second jaw 2 is a movable jaw
  • the claw 52 connected to the first end of the second handle 5 moves along the second side wall 312 of the long hole 31 of the connecting portion 3, and drives the second jaw 4 to translate toward or away from the first jaw 1 to form a jaw. Panning the wrench.
  • the second elastic member 82 When an external force acts on the handle of the jaw of the jaw translation, the second elastic member 82 is elastically deformed, the second jaw 4 is translated toward the first jaw 1, and between the second jaw 4 and the first jaw 1 The degree of tension is reduced until it comes into contact with the workpiece.
  • the second link 62 When the external force does not act, the second link 62 is unfolded with the first link 61 by the force generated by the elastic deformation of the second elastic member 82, and the second jaw 4 is The translation is shifted away from the first jaw 1 such that the second jaw 4 and the first jaw 1 are in the most position of the crown.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the second elastic member 82 When an external force acts on the handle of the jaw of the jaw translation, the second elastic member 82 is elastically deformed, the second jaw 4 is translated toward the first jaw 1, and between the second jaw 4 and the first jaw 1 The degree of tension is reduced until it comes into contact with the workpiece, at which time an external force is continuously applied, and the second jaw 4 is subjected to a force exerted by the workpiece facing away from the first jaw 1, and this force is transmitted to the second through the recess 41 of the second jaw 4.
  • the first side wall 311 of the elongated hole 31 of the 3 moves, so that the claw 52 and the tooth of the first side wall 311 At this time, the second jaw 4 and the connecting portion 3 cannot slide relative to each other; the opposite direction of force is continuously applied, the second handle 5 rotates around the first pin 71, the cam 52 rotates, and the fourth pin 74 faces away from the connecting member.
  • the direction of movement, the force of the force arm is the distance of the action point of the handle of the wrench applied to the jaw translation by the external force to the first pin shaft 71, and the resistance arm is the distance from the edge of the cam 52 to the first pin shaft 71, thus the second
  • the handle 5 is a labor-saving lever that can generate a larger clamping force and is transmitted to the clamping faces of the first jaw 1 and the second jaw 4.
  • the jaw-translating wrench of this embodiment adopts two-stage transmission, the first-stage transmission is used for jaw translation, the second-stage transmission is used to provide greater clamping force; when the claw 52 and the first side wall are The teeth of the 311 are the first stage transmission when the teeth are not engaged, and the second stage transmission when the claws 52 are engaged with the teeth of the first side wall 311, which has higher efficiency.
  • the first link 61 is first rotated by the elastic force of the first elastic member 81, so that the fourth pin 74 is oriented toward the connection.
  • the direction of the component 3 is moved to remove the large clamping force between the first jaw 1 and the second jaw 4; at this time, the claw 52 is disengaged from the teeth of the first side wall 311 without causing structural damage.
  • the wrench that translates the jaws has a longer life.
  • the jaw of the jaw translation in this embodiment is made of sheet metal, and is formed by punching and riveting a high-strength sheet laminate.
  • the material of the plate is steel or iron.
  • the second jaw 4 is in sliding connection with the connecting portion 3 by a slider 42 provided in the elongated hole 31.
  • the second jaw 4 is composed of a multi-layer plate.
  • the jaw is translated by a wrench, and the second jaw 4 is made of a 4-layer plate, and is riveted through the outer plate and the slider 42.
  • the second jaw 4 is in sliding connection with the connecting portion 3, and the second jaw 4 translates toward or away from the first jaw 1 as the slider 42 moves along the second side wall 312 of the elongated hole 31.
  • the connecting portion 3 faces the first edge 32 of the second jaw 4, parallel to the first side wall 311 of the elongated hole 31 of the connecting portion 3; the second jaw 4 has a groove with the first edge 32 and the groove A gap to move the groove along the first edge 32.
  • the second jaw 4 is made of 4 layers of plates, and the middle two plates of the second jaw 4 are shorter than the outer plate, forming a groove, the first edge 32 and the concave There is a gap between the slots to move the groove along the first edge, further ensuring that the second jaw 4 translates toward or away from the first jaw 1 as the slider 42 moves along the second side wall 312 of the elongated hole 31.
  • the first elastic member 81 is a tension spring.
  • the first link 61 is straight, and the first handle 2 is provided with a stopper 21. Further, the rotation angle of the first link 61 is prevented from being excessively large, and the fourth pin shaft 74 is at or over the line connecting the second pin shaft 72 and the third pin shaft 73, causing the link mechanism to be stuck.
  • the second elastic member 82 is a torsion spring.
  • the torsional force generated by the torsion spring 82 on the second link 62 causes the second link 62 and the first link 61 to be in an unfolded state, thereby causing the second forceps
  • the mouth 4 and the first jaw 1 are at the position where the degree of opening is the greatest.
  • the torsion spring 82 When an external force acts on the handle of the wrench of the jaw translation, the torsion spring 82 is twisted, the second jaw 4 translates toward the first jaw 1, and the degree of tension between the second jaw 4 and the first jaw 1 Decrease until contact with the workpiece, when the external force does not act, the second link 62 is deployed with the first link 61 under the torsional force of the torsion spring 82, and the second jaw 4 is translated away from the first jaw 1 The second jaw 4 and the first jaw 1 are placed at the position where the degree of tension is the greatest.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the jaw-translating wrench further includes a locking mechanism for preventing movement of the second jaw 4 away from the first jaw 1.
  • the locking mechanism can be used to maintain the clamped state without continuously applying a force on the handle of the jaw of the jaw translation, thereby liberating the operator's hand. , other operations in the clamped state are completed.
  • the locking mechanism includes a first end of the second link 62 and a third link 92.
  • the first end of the second link 62 is fan-shaped, and teeth are disposed at the edge of the fan.
  • the first end of the rod 92 is connected to the second handle 5 via a fifth pin 75, the second end of the third link 92 is provided with a push button 91, and the third link 92 is oriented toward the first end of the second link 62. Set the teeth on the side.
  • An external force is applied to the handle of the jaw of the jaw translation, and the opening between the second jaw 4 and the first jaw 1 can be further reduced.
  • the push button When it is not necessary to maintain the opening degree between the second jaw 4 and the first jaw 1, the push button is pushed in a direction away from the second jaw 4, the teeth of the third link 92 and the sector of the second link 62 The teeth of the edge are no longer engaged, the second link 62 is deployed with the first link 61 under the action of the second elastic member 82, and the second jaw 4 is translated away from the first jaw 1, so that the second jaw 4 and the second A jaw 1 is in the position with the greatest degree of tonnage.
  • a card slot 53 is provided in the second handle 5.
  • the card slot 53 is for limiting the position of the push button 91.
  • the push button 91 is not caught at the card slot 53, and the teeth of the third link 92 are engaged with the teeth of the sector edge of the second link, that is, locked.
  • the mechanism is in the locked position; as shown in FIG. 4, the push button 91 is engaged at the card slot 53, and the teeth of the third link 92 are not engaged with the teeth of the sector edge of the second link, that is, the locking mechanism is in the unlocked position.
  • the locking mechanism includes a third elastic member 93 for applying a force toward the third link 92 toward the third link 92 when the teeth of the third link 92 and the scalloped edge of the second link 62
  • the teeth can be stably meshed with each other, and even if an external force is applied to the handle of the jaw of the jaw translation, the opening between the second jaw 4 and the first jaw 1 is further reduced, the teeth and the teeth The disengagement can still be re-stable after disengagement, so that the locking mechanism can stably and reliably prevent the movement of the second jaw 4 away from the first jaw 1.
  • the third elastic member 92 is a torsion spring.
  • a scale is provided on the connecting portion 3 for measuring the distance between the first jaw 1 and the second jaw 4.
  • the jaw translation of the wrench in another embodiment of the present invention includes
  • the first jaw 1, the first handle 2 and the connecting portion 3 connecting the first jaw 1 and the first handle 2, the connecting portion 3 is provided with an elongated hole 31 having a first side wall 311 and a second side wall 312
  • the first sidewall 311 is parallel to the second sidewall 312, and the first sidewall 311 is provided with a tooth;
  • the second handle 5 is connected to the connecting portion 3 through the claws disposed in the long hole 31, the second handle 5 and the claw are connected by the first pin 71, the first end of the second handle 5 is provided with a cam 51;
  • the second jaw 4 is slidably connected to the connecting portion 3, and the second jaw 4 is provided with a recess 41 for accommodating the cam 51;
  • the first link 61 is connected to the first handle 2 through the second pin 72.
  • the first end of the first link 61 is provided with a first elastic member, and the first elastic member is used for resetting the first link 61;
  • the second link 62 is connected to the second handle 5 via a third pin 73.
  • the first end of the second link 62 is provided with a second elastic member, and the second elastic member is used for resetting the second link 62.
  • the second end of the connecting rod 61 and the second end of the second link 62 are connected by a fourth pin 74;
  • the connecting portion 3 is provided with a guiding groove 33 which is parallel with the first side wall 311 of the long hole 31 of the connecting portion 3, as shown in Fig. 7, the second jaw 4 has a groove 43, and the side wall of the groove faces the connection
  • An elongated protrusion 431 is provided on one side of the portion, and the elongated protrusion 431 is fitted into the guide groove 33 to slidably connect the second jaw 4 to the connecting portion 3.
  • the jaw translational wrench of this embodiment is made by a forging process.
  • the first elastic member is a tension spring.
  • the second elastic member is a tension spring.
  • the tension spring When an external force acts on the handle of the wrench of the jaw translation, the tension spring is stretched, the second jaw 4 translates toward the first jaw 1, and the degree of tension between the second jaw 4 and the first jaw 1 Decrease until contact with the workpiece, when the external force does not act, the second link 62 is deployed with the first link 61 under the pulling force of the tension spring, and the second jaw 4 is translated in a direction away from the first jaw 1 So that the second jaw 4 and the first jaw 1 are in the position where the degree of expansion is the greatest.
  • the jaws can be automatically opened without manually opening the jaws in advance, so that the jaws of the jaw translation can conveniently perform the operation of clamping the workpiece with one hand.
  • the first link 61 is folded to prevent the first link from rotating at an excessive angle, and the fourth pin 74 passes over the line connecting the second pin 72 and the third pin 73, causing the link mechanism to be stuck.
  • the utility model provides a jaw-translating wrench, the jaw translation is suitable for clamping a plurality of workpieces; and the two-stage transmission can provide a larger clamping force. It has higher efficiency.
  • the external force no longer acts on the handle of the wrench of the jaw translation, firstly, under the elastic force of the first elastic member, the first link rotates, so that the fourth pin shaft faces the connecting member.
  • the direction is moved to remove the large clamping force between the first jaw and the second jaw; at this time, the claw is disengaged from the teeth of the first side wall, and the structure is not damaged, and the jaw of the jaw is translated.
  • the service life is longer; it also includes a locking mechanism for maintaining the grip state, which can liberate the operator's hand and perform other operations in the clamped state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种钳口平移的板钳，包括第一钳口（1）、第一手柄（2）以及连接部分，连接部分设置长孔（31），长孔具有相互平行的第一侧壁（311）与第二侧壁（312），第一侧壁设置齿；第二手柄（5），通过设置于长孔中的卡爪（52）与连接部分连接，第二手柄的第一端设置凸轮（51）；第二钳口（4）与连接部分滑动连接，第二钳口（4）设置容纳凸轮的凹部（41）；第一连杆（61）与第一手柄（2）连接，第一连杆（61）的第一端设置弹性部件；第二连杆（62）与第二手柄（5）连接，第二连杆（62）的第一端设置弹性部件，第一连杆（61）的第二端与第二连杆（62）的第二端连接。该钳口平移的板钳，适用于夹持多种工件；采用两级传动，能够提供更大的夹持力，具有更高的功效，不易造成结构损坏，使用寿命更长；采用锁定机构，可将操作人员的手解放出来，使用更方便。

Description

一种钳口平移的板钳
技术领域
本发明涉及一种夹持工件的手动工具，尤其涉及一种 钳口平移的 板钳。
背景技术
钳口平移的板钳是一种夹持工件的手动工具，适用 于夹持板材、螺栓、螺母以及管件等各种工件。
能够自动张开钳口的板钳可以在夹持工件时单手操作，不必根据工件的尺寸预先调整钳口，也就是说只要工件能够放入两个钳口之间，可以方便调整到工件的尺寸。
通常情况下使用板钳夹持工件时，使用者需对手柄施加力，力通过手柄传递到钳口，钳口对工件施加夹持力。在实际使用过程中，常常需要使用者松开手柄时，仍在被夹持的工件上保持持续的夹持力。
因此，本领域的技术人员致力于开发一种钳口能够自动张开钳口且具有锁定机构的钳口平移的板钳。
发明内容
本发明提供一种钳口平移的板钳 ，包括
第一钳口、第一手柄以及连接第一钳口与第一手柄的连接部分，连接部分设置长孔，长孔具有第一侧壁与第二侧壁，第一侧壁与第二侧壁平行，第一侧壁设置齿；
第二手柄，通过设置于长孔中的卡爪与连接部分连接，第二手柄与卡爪通过第一销轴连接，第二手柄的第一端设置凸轮；
第二钳口，与连接部分滑动连接，第二钳口设置容纳凸轮的凹部；
第一连杆，通过第二销轴与第一手柄连接，第一连杆的第一端设置第一弹性部件，第一弹性部件用于第一连杆的复位；
第二连杆，通过第三销轴与第二手柄连接，第二连杆的第一端设置第二弹性部件，第二弹性部件用于第二连杆的复位，第一连杆的第二端与第二连杆的第二端通过第四销轴连接；
当工件置于第一钳口与第二钳口之间，在第一手柄与第二手柄上施加方向相反的外力，使第一手柄与第二手柄相向运动；第二手柄围绕第一销轴转动，使得第二钳口朝向第一钳口平移，直到工件限制第二钳口的平移；第二连杆带动第二手柄朝向第二钳口移动，以使卡爪与第一侧壁的齿啮合；继续施加方向相反的力，第二手柄围绕第一销轴转动，产生大于所述方向相反的力的夹紧力并传递到第一钳口的夹持面与所述第二钳口的夹持面。
本发明提供的钳口平移的板钳，第一钳口为固定钳口，第二钳口为活动钳口，当操作者在第一手柄与第二手柄上施加作用力时，与第二手柄的第一端连接的卡爪沿连接部分的长孔的第二侧壁移动，带动第二钳口朝向或背离第一钳口平移，构成钳口平移的板钳。
当没有外力作用于钳口平移的板钳的手柄时，第二弹性部件在第二连杆上产生的力使得第二连杆与第一连杆处于展开状态，从而使得第二钳口与第一钳口处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，第二弹性部件产生弹性变形，第二钳口朝向第一钳口平移，第二钳口与第一钳口之间的张度减小，直到与工件接触，当外力不作用时，在第二弹性部件弹性变形产生的力的作用下，第二连杆与第一连杆展开，第二钳口背离第一钳口平移，使得第二钳口与第一钳口处于张度最大的位置。
本发明提供的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
当有外力作用于钳口平移的板钳的手柄时，第二弹性部件产生弹性变形，第二钳口朝向第一钳口平移，第二钳口与第一钳口之间的张度减小，直到与工件接触，此时继续施加外力，第二钳口受到工件施加的背离第一钳口的力，这个力通过第二钳口的凹部传递给第二手柄的凸轮；第一弹性部件的弹性力作用于第一连杆的第一端，方向为沿第一手柄背离钳口的方向，该弹性力在第一连杆的第二端产生方向相反的作用力，该作用力通过第四销轴作用于第二连杆，并通过第三销轴作用于第二手柄，第二手柄在作用于凸轮的工件施加的力、作用于第三销轴的第一弹性部件的弹性力、作用于手柄的外力以及第二弹性部件对第二手柄的弹性力的共同作用下，产生朝向连接部分的长孔的第一侧壁移动，使得卡爪与第一侧壁的齿啮合，此时第二钳口与连接部分不能相对滑动；继续施加方向相反的力，第二手柄围绕第一销轴转动，凸轮旋转，第四销轴朝向背离连接部件的方向移动，作用力的力臂为外力作用于钳口平移的板钳的手柄的作用点到第一销轴的距离，阻力臂为凸轮边缘到第一销轴的距离，因而第二手柄为省力杠杆，能够产生更大的夹持力，传递到第一钳口与第二钳口的夹持面。
本发明提供的钳口平移的板钳，采用两级传动，第一级传动用于钳口平移，第二级传动用于提供更大的夹持力；当卡爪与第一侧壁的齿未啮合时为第一级传动，当卡爪与第一侧壁的齿啮合时为第二级传动，具有更高的功效。
采用两级传动，当外力不再作用于钳口平移的板钳的手柄时，首先在第一弹性部件的弹性力的作用下，第一连杆转动，使得第四销轴朝向连接部件的方向移动，卸去第一钳口与第二钳口之间的大的夹持力；此时卡爪与第一侧壁的齿脱开，不会造成结构损坏，使钳口平移的板钳的使用寿命更长。
进一步地 ， 钳口平移的板钳采用板材制作，采用高强度板材叠层冲切、铆合而成。
进一步地 ， 板材的材质为钢或铁。
进一步地 ， 第二钳口通过设置于长孔中的滑块，与连接部分形成滑动连接。第二钳口由多层板材构成，通过外层的板材与滑块铆合连接，使第二钳口与连接部分形成滑动连接，当滑块沿长孔的第二侧壁移动时，第二钳口朝向或远离第一钳口平移。
进一步地 ， 连接部分朝向第二钳口的第一边缘，平行于连接部分的长孔的第一侧壁；第二钳口具有凹槽，第一边缘与凹槽之间具有间隙，以使凹槽沿第一边缘移动。第二钳口的中间板材比外层的板材短，形成凹槽，第一边缘与凹槽之间具有间隙，以使凹槽沿第一边缘移动，进一步保证当滑块沿长孔的第二侧壁移动时，第二钳口朝向或远离第一钳口平移。
进一步地 ， 钳口平移的板钳 采用锻造工艺制成。
进一步地 ， 连接部分设置导向槽，导向槽与连接部分的长孔的第一侧壁平行，第二钳口具有凹槽，凹槽的侧壁朝向连接部分的一侧设置长形凸起，长形凸起嵌入导向槽，以使第二钳口与连接部分滑动连接。当长形凸起沿导向槽移动时，第二钳口朝向或远离第一钳口平移。
进一步地 ， 第一弹性部件为拉簧。
进一步地 ， 第一连杆为直形，第一手柄上设置挡块。进一步防止第一连杆旋转角度过大，第四销轴处于或越过第二销轴与第三销轴的连线，造成连杆机构卡死。
进一步地 ， 第一连杆为折形。进一步防止第一连杆旋转角度过大，第四销轴越过第二销轴与第三销轴的连线上，造成连杆机构卡死。
进一步地 ， 第二弹性部件为扭簧。
当没有外力作用于钳口平移的板钳的手柄时，扭簧在第二连杆上产生的扭转力使得第二连杆与第一连杆处于展开状态，从而使得第二钳口与第一钳口处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，扭簧发生扭转，第二钳口朝向第一钳口平移，第二钳口与第一钳口之间的张度减小，直到与工件接触，当外力不作用时，在扭簧的扭转力的作用下第二连杆与第一连杆展开，第二钳口背离第一钳口平移，使得第二钳口与第一钳口处于张度最大的位置。
本发明提供的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
进一步地 ， 第二弹性部件为拉簧。
当没有外力作用于钳口平移的板钳的手柄时，拉簧在第二连杆上产生的拉力使得第二连杆与第一连杆处于展开状态，从而使得第二钳口与第一钳口处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，拉簧发生拉伸，第二钳口朝向第一钳口平移，第二钳口与第一钳口之间的张度减小，直到与工件接触，当外力不作用时，在拉簧的拉力的作用下第二连杆与第一连杆展开，第二钳口背离第一钳口平移，使得第二钳口与第一钳口处于张度最大的位置。
本发明提供的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
进一步地 ， 钳口平移的板钳还包括锁定机构，锁定机构用于阻止第二钳口背离第一钳口的移动。
当钳口平移的板钳处于夹持工件的位置，可以使用锁定机构来保持夹持的状态，而不必持续在钳口平移的板钳的手柄上施加力，因而可以将操作人员的手解放出来，完成夹持状态下的其他操作。
进一步地 ， 锁定机构包括第二连杆的第一端与第三连杆，第二连杆的第一端呈扇形，在扇形的边缘设置齿；第三连杆的第一端通过第五销轴与第二手柄连接，第三连杆的第二端设置推钮，第三连杆朝向第二连杆的第一端的一侧设置齿。
当第三连杆的齿与第二连杆的扇形边缘的齿啮合时，阻止在第二弹性部件的作用下第二连杆与第一连杆展开，从而阻止了第二钳口背离第一钳口平移，保持第二钳口与第一钳口之间的开度。
在钳口平移的板钳的手柄上施加外力，第二钳口与第一钳口之间的开度能够进一步减小。
当不需要保持第二钳口与第一钳口之间的开度时，向背离第二钳口的方向推动推钮，第三连杆的齿与第二连杆的扇形边缘的齿不再啮合，在第二弹性部件的作用下第二连杆与第一连杆展开，第二钳口背离第一钳口平移，使得第二钳口与第一钳口处于张度最大的位置。
进一步地 ， 第二手柄上设置卡槽。卡槽用于限制推钮的位置，使推钮处于第三连杆的齿与第二连杆的扇形边缘的齿不啮合的位置，即锁定机构处于解锁的位置。
进一步地 ， 锁定机构包括第三弹性部件。第三弹性部件用于向第三连杆施加朝向第二连杆的力，当第三连杆的齿与第二连杆的扇形边缘的齿啮合时，齿与齿之间能够稳定啮合，即使在钳口平移的板钳的手柄上施加外力，第二钳口与第一钳口之间的开度进一步减小，齿与齿脱开后仍然可以重新稳定啮合，从而使得锁定机构能够稳定可靠地阻止第二钳口背离第一钳口的移动。
进一步地 ， 第三弹性部件为扭簧。
进一步地 ， 连接部分 上设置标尺，标尺用于测量第一钳口与第二钳口之间的距离。
本发明提供的钳口平移的板钳，具有以下有益效果：
1 、 钳口平移适用于 夹持多种工件，如圆管，平板，螺栓和螺母等；
2 、采用两级传动， 第一级传动用于钳口平移，第二级传动用于提供更大的夹持力；当卡爪与第一侧壁的齿未啮合时为第一级传动，当卡爪与第一侧壁的齿啮合时为第二级传动， 能够提供更大的夹持力， 具有更高的功效。采用两级传动，当外力不再作用于钳口平移的板钳的手柄时，首先在第一弹性部件的弹性力的作用下，第一连杆转动，使得第四销轴朝向连接部件的方向移动，卸去第一钳口与第二钳口之间的大的夹持力；此时卡爪与第一侧壁的齿脱开，不会造成结构损坏，使钳口平移的板钳的使用寿命更长。
3 、 钳口平移的板钳还包括锁定机构，用于阻止第二钳口背离第一钳口的移动，当钳口平移的板钳处于夹持工件的位置，可以使用锁定机构来保持夹持的状态，而不必持续在钳口平移的板钳的手柄上施加力，因而可以将操作人员的手解放出来，完成夹持状态下的其他操作。
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
附图说明
图1是本发明的一个实施例的钳口平移的板钳的结构示意图；
图2是图1所示的钳口平移的板钳钳口张开到最大位置的结构示意图；
图3是图1所示的钳口平移的板钳的锁定机构处于锁定位置的结构示意图；
图4是图1所示的钳口平移的板钳的锁定机构处于解锁位置的结构示意图；
图5 是图1所示的钳口平移的板钳的活动钳口的多层板材结构示意图；
图6是本发明的另一个实施例的钳口平移的板钳的结构示意图；
图7是图6所示的钳口平移的板钳的活动钳口的侧视图。
具体实施方式
如图1、图2所示，本发明的一个实施例的钳口平移的板钳包括
第一钳口1、第一手柄2以及连接第一钳口1与第一手柄2的连接部分3，连接部分3设置长孔31，长孔31具有第一侧壁311与第二侧壁312，第一侧壁311与第二侧壁312平行，第一侧壁311设置齿；
第二手柄5，通过设置于长孔31中的卡爪52与连接部分3连接，第二手柄5与卡爪52通过第一销轴71连接，第二手柄5的第一端设置凸轮51；
第二钳口4，与连接部分3滑动连接，第二钳口4设置容纳凸轮51的凹部41；
第一连杆61，通过第二销轴72与第一手柄2连接，第一连杆61的第一端设置第一弹性部件81，第一弹性部件81用于第一连杆61的复位；
第二连杆62，通过第三销轴73与第二手柄5连接，第二连杆62的第一端设置第二弹性部件82，第二弹性部件82用于第二连杆62的复位，第一连杆61的第二端与第二连杆62的第二端通过第四销轴74连接；
当工件置于第一钳口1与第二钳口4之间，在第一手柄2与第二手柄5上施加方向相反的外力，使第一手柄2与第二手柄5相向运动；第二手柄5围绕第一销轴71转动，使得第二钳口4朝向第一钳口1平移，直到工件限制第二钳口4的平移；第二连杆62带动第二手柄5朝向第二钳口4移动，以使卡爪52与第一侧壁311的齿啮合；继续施加方向相反的力，第二手柄5围绕第一销轴71转动，产生大于方向相反的力的夹紧力并传递到第一钳口1的夹持面与第二钳口4的夹持面。
本实施例中的钳口平移的板钳，第一钳口1为固定钳口，第二钳口2为活动钳口，当操作者在第一手柄2与第二手柄5上施加作用力时，与第二手柄5的第一端连接的卡爪52沿连接部分3的长孔31的第二侧壁312移动，带动第二钳口4朝向或背离第一钳口1平移，构成钳口平移的板钳。
当没有外力作用于钳口平移的板钳的手柄时，第二弹性部件82在第二连杆62上产生的力使得第二连杆62与第一连杆61处于展开状态，从而使得第二钳口4与第一钳口1处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，第二弹性部件82产生弹性变形，第二钳口4朝向第一钳口1平移，第二钳口4与第一钳口1之间的张度减小，直到与工件接触，当外力不作用时，在第二弹性部件82弹性变形产生的力的作用下，第二连杆62与第一连杆61展开，第二钳口4背离第一钳口1平移，使得第二钳口4与第一钳口1处于张度最大的位置。
本实施例中的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
当有外力作用于钳口平移的板钳的手柄时，第二弹性部件82产生弹性变形，第二钳口4朝向第一钳口1平移，第二钳口4与第一钳口1之间的张度减小，直到与工件接触，此时继续施加外力，第二钳口4受到工件施加的背离第一钳口1的力，这个力通过第二钳口4的凹部41传递给第二手柄5的凸轮51；第一弹性部件81的弹性力作用于第一连杆61的第一端，方向为沿第一手柄2背离钳口的方向，该弹性力在第一连杆61的第二端产生方向相反的作用力，该作用力通过第四销轴74作用于第二连杆62，并通过第三销轴73作用于第二手柄5，第二手柄5在作用于凸轮52的工件施加的力、作用于第三销轴73的第一弹性部件81的弹性力、作用于手柄的外力以及第二弹性部件82对第二手柄5的弹性力的共同作用下，产生朝向连接部分3的长孔31的第一侧壁311移动，使得卡爪52与第一侧壁311的齿啮合，此时第二钳口4与连接部分3不能相对滑动；继续施加方向相反的力，第二手柄5围绕第一销轴71转动，凸轮52旋转，第四销轴74朝向背离连接部件的方向移动，作用力的力臂为外力作用于钳口平移的板钳的手柄的作用点到第一销轴71的距离，阻力臂为凸轮52边缘到第一销轴71的距离，因而第二手柄5为省力杠杆，能够产生更大的夹持力，传递到第一钳口1与第二钳口4的夹持面。
本实施例中的钳口平移的板钳，采用两级传动，第一级传动用于钳口平移，第二级传动用于提供更大的夹持力；当卡爪52与第一侧壁311的齿未啮合时为第一级传动，当卡爪52与第一侧壁311的齿啮合时为第二级传动，具有更高的功效。
采用两级传动，当外力不再作用于钳口平移的板钳的手柄时，首先在第一弹性部件81的弹性力的作用下，第一连杆61转动，使得第四销轴74朝向连接部件3的方向移动，卸去第一钳口1与第二钳口4之间的大的夹持力；此时卡爪52与第一侧壁311的齿脱开，不会造成结构损坏，使钳口平移的板钳的使用寿命更长。
本实施例中的钳口平移的板钳采用板材制作，采用高强度板材叠层冲切、铆合而成。板材的材质为钢或铁。
第二钳口4通过设置于长孔31中的滑块42，与连接部分3形成滑动连接。如图5所示，第二钳口4由多层板材构成，本实施例中的钳口平移的板钳，第二钳口4采用4层板材制作，通过外层的板材与滑块42铆合连接，使第二钳口4与连接部分3形成滑动连接，当滑块42沿长孔31的第二侧壁312移动时，第二钳口4朝向或远离第一钳口1平移。
连接部分3朝向第二钳口4的第一边缘32，平行于连接部分3的长孔31的第一侧壁311；第二钳口4具有凹槽，第一边缘32与凹槽之间具有间隙，以使凹槽沿第一边缘32移动。
本实施例中的钳口平移的板钳，第二钳口4采用4层板材制作，第二钳口4的中间两层板材比外层的板材短，形成凹槽，第一边缘32与凹槽之间具有间隙，以使凹槽沿第一边缘移动，进一步保证当滑块42沿长孔31的第二侧壁312移动时，第二钳口4朝向或远离第一钳口1平移。
第一弹性部件81为拉簧。
第一连杆61为直形，第一手柄2上设置挡块21。进一步防止第一连杆61旋转角度过大，第四销轴74处于或越过第二销轴72与第三销轴73的连线，造成连杆机构卡死。
第二弹性部件82为扭簧。
当没有外力作用于钳口平移的板钳的手柄时，扭簧82在第二连杆62上产生的扭转力使得第二连杆62与第一连杆61处于展开状态，从而使得第二钳口4与第一钳口1处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，扭簧82发生扭转，第二钳口4朝向第一钳口1平移，第二钳口4与第一钳口1之间的张度减小，直到与工件接触，当外力不作用时，在扭簧82的扭转力的作用下第二连杆62与第一连杆61展开，第二钳口4背离第一钳口1平移，使得第二钳口4与第一钳口1处于张度最大的位置。
本实施例中的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
钳口平移的板钳还包括锁定机构，锁定机构用于阻止第二钳口4背离第一钳口1的移动。
当钳口平移的板钳处于夹持工件的位置，可以使用锁定机构来保持夹持的状态，而不必持续在钳口平移的板钳的手柄上施加力，因而可以将操作人员的手解放出来，完成夹持状态下的其他操作。
如图3、图4所示，锁定机构包括第二连杆62的第一端与第三连杆92，第二连杆62的第一端呈扇形，在扇形的边缘设置齿；第三连杆92的第一端通过第五销轴75与第二手柄5连接，第三连杆92的第二端设置推钮91，第三连杆92朝向第二连杆62的第一端的一侧设置齿。
当第三连杆92的齿与第二连杆62的扇形边缘的齿啮合时，阻止在第二弹性部件82的作用下第二连杆62与第一连杆61展开，从而阻止了第二钳口4背离第一钳口1的平移，保持第二钳口4与第一钳口1之间的开度。
在钳口平移的板钳的手柄上施加外力，第二钳口4与第一钳口1之间的开度能够进一步减小。
当不需要保持第二钳口4与第一钳口1之间的开度时，向背离第二钳口4的方向推动推钮，第三连杆92的齿与第二连杆62的扇形边缘的齿不再啮合，在第二弹性部件82的作用下第二连杆62与第一连杆61展开，第二钳口4背离第一钳口1平移，使得第二钳口4与第一钳口1处于张度最大的位置。
第二手柄5上设置卡槽53。卡槽53用于限制推钮91的位置，如图3所示，推钮91未卡于卡槽53处，第三连杆92的齿与第二连杆的扇形边缘的齿啮合，即锁定机构处于锁定的位置；如图4所示，推钮91卡于卡槽53处，第三连杆92的齿与第二连杆的扇形边缘的齿不啮合，即锁定机构处于解锁的位置。
锁定机构包括第三弹性部件93，第三弹性部件93用于向第三连杆92施加朝向第二连杆62的力，当第三连杆92的齿与第二连杆62的扇形边缘的齿啮合时，齿与齿之间能够稳定啮合，即使在钳口平移的板钳的手柄上施加外力，第二钳口4与第一钳口1之间的开度进一步减小，齿与齿脱开后仍然可以重新稳定啮合，从而使得锁定机构能够稳定可靠地阻止第二钳口4背离第一钳口1的移动。
本实施例中的钳口平移的板钳，第三弹性部件92为扭簧。
连接部分3 上设置标尺，用于测量第一钳口1与第二钳口4之间的距离。
如图6所示，本发明的另一个本实施例中的钳口平移的板钳，包括
第一钳口1、第一手柄2以及连接第一钳口1与第一手柄2的连接部分3，连接部分3设置长孔31，长孔31具有第一侧壁311与第二侧壁312，第一侧壁311与第二侧壁312平行，第一侧壁311设置齿；
第二手柄5，通过设置于长孔31中的卡爪与连接部分3连接，第二手柄5与卡爪通过第一销轴71连接，第二手柄5的第一端设置凸轮51；
第二钳口4，与连接部分3滑动连接，第二钳口4设置容纳凸轮51的凹部41；
第一连杆61，通过第二销轴72与第一手柄2连接，第一连杆61的第一端设置第一弹性部件，第一弹性部件用于第一连杆61的复位；
第二连杆62，通过第三销轴73与第二手柄5连接，第二连杆62的第一端设置第二弹性部件，第二弹性部件用于第二连杆62的复位，第一连杆61的第二端与第二连杆62的第二端通过第四销轴74连接；
连接部分3设置导向槽33，导向槽33与连接部分3的长孔31的第一侧壁311平行，如图7所示，第二钳口4具有凹槽43，凹槽的侧壁朝向连接部分的一侧设置长形凸起431，长形凸起431嵌入导向槽33，以使第二钳口4与连接部分3滑动连接。当长形凸起431沿导向槽33移动时，第二钳口2朝向或背离第一钳口1平移。
本实施例中的钳口平移的板钳采用锻造工艺制成。
第一弹性部件为拉簧。
第二弹性部件为拉簧。
当没有外力作用于钳口平移的板钳的手柄时，拉簧在第二连杆62上产生的拉力使得第二连杆62与第一连杆61处于展开状态，从而使得第二钳口与第一钳口处于张度最大的位置。
当有外力作用于钳口平移的板钳的手柄时，拉簧发生拉伸，第二钳口4朝向第一钳口1平移，第二钳口4与第一钳口1之间的张度减小，直到与工件接触，当外力不作用时，在拉簧的拉力的作用下第二连杆62与第一连杆61展开，第二钳口4向背离第一钳口1的方向平移，使得第二钳口4与第一钳口1处于张度最大的位置。
本实施例中的钳口平移的板钳，钳口能够自动张开，而不必预先手动将钳口张开，使得该钳口平移的板钳能够用单手方便地进行夹持工件的操作。
第一连杆61为折形，防止第一连杆旋转角度过大，第四销轴74越过第二销轴72与第三销轴73的连线上，造成连杆机构卡死。
本发明提供的钳口平移的板钳，钳口平移适用于 夹持多种工件；采用两级传动，能够提供更大的夹持力， 具有更高的功效，当外力不再作用于钳口平移的板钳的手柄时，首先在第一弹性部件的弹性力的作用下，第一连杆转动，使得第四销轴朝向连接部件的方向移动，卸去第一钳口与第二钳口之间的大的夹持力；此时卡爪与第一侧壁的齿脱开，不会造成结构损坏，使钳口平移的板钳的使用寿命更长；还包括锁定机构，用于保持夹持的状态，可以将操作人员的手解放出来，完成夹持状态下的其他操作。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思做出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (18)

  1. 一种钳口平移的板钳，其特征在于，所述钳口平移的板钳包括
    第一钳口、第一手柄以及连接所述第一钳口与所述第一手柄的连接部分，所述连接部分设置长孔，所述长孔具有第一侧壁与第二侧壁，所述第一侧壁与所述第二侧壁平行，所述第一侧壁设置齿；
    第二手柄，通过设置于所述长孔中的卡爪与所述连接部分连接，所述第二手柄与所述卡爪通过第一销轴连接，所述第二手柄的第一端设置凸轮；
    第二钳口，与所述连接部分滑动连接，所述第二钳口设置容纳所述凸轮的凹部；
    第一连杆，通过第二销轴与所述第一手柄连接，所述第一连杆的第一端设置第一弹性部件，所述第一弹性部件用于所述第一连杆的复位；
    第二连杆，通过第三销轴与所述第二手柄连接，所述第二连杆的第一端设置第二弹性部件，所述第二弹性部件用于所述第二连杆的复位，所述第一连杆的第二端与所述第二连杆的第二端通过第四销轴连接；
    当工件置于所述第一钳口与所述第二钳口之间，在所述第一手柄与所述第二手柄上施加方向相反的力，使所述第一手柄与所述第二手柄相向运动；所述第二手柄围绕所述第一销轴转动，使得所述第二钳口朝向所述第一钳口平移，直到所述工件限制所述第二钳口的平移；所述第二连杆带动所述第二手柄朝向所述第二钳口移动，以使所述卡爪与所述第一侧壁的所述齿啮合；继续施加所述方向相反的力，所述第二手柄围绕所述第一销轴转动，产生大于所述方向相反的力的夹紧力并传递到第一钳口的夹持面与所述第二钳口的夹持面。
  2. 如权利要求1所述的钳口平移的板钳，其特征在于，所述钳口平移的板钳采用板材制作。
  3. 如权利要求2所述的钳口平移的板钳，其特征在于，所述板材的材质为钢或铁。
  4. 如权利要求2所述的钳口平移的板钳，其特征在于，所述第二钳口通过设置于所述长孔中的滑块，与所述连接部分形成滑动连接。
  5. 如权利要求4所述的钳口平移的板钳，其特征在于，所述连接部分朝向所述第二钳口的第一边缘，平行于所述连接部分的所述长孔的所述第一侧壁；所述第二钳口具有凹槽，所述第一边缘与所述凹槽之间具有间隙，以使所述凹槽沿所述第一边缘移动。
  6. 如权利要求1所述的钳口平移的板钳，其特征在于，所述钳口平移的板钳采用锻造工艺制成。
  7. 如权利要求6所述的钳口平移的板钳，其特征在于，所述连接部分设置导向槽，所述导向槽与所述连接部分的所述长孔的所述第一侧壁平行，所述第二钳口具有凹槽，所述凹槽的侧壁朝向所述连接部分的一侧设置长形凸起，所述长形凸起嵌入所述导向槽，以使所述第二钳口与所述连接部分滑动连接。
  8. 如权利要求1所述的钳口平移的板钳，其特征在于，所述第一弹性部件为拉簧。
  9. 如权利要求8所述的钳口平移的板钳，其特征在于，所述第一连杆为直形，所述第一手柄上设置挡块。
  10. 如权利要求8所述的钳口平移的板钳，其特征在于，所述第一连杆为折形。
  11. 如权利要求1所述的钳口平移的板钳，其特征在于，所述第二弹性部件为扭簧。
  12. 如权利要求1所述的钳口平移的板钳，其特征在于，所述第二弹性部件为拉簧。
  13. 如权利要求1所述的钳口平移的板钳，其特征在于，所述钳口平移的板钳还包括锁定机构，所述锁定机构用于阻止所述第二钳口背离所述第一钳口的移动。
  14. 如权利要求13所述的钳口平移的板钳，其特征在于，所述锁定机构包括所述第二连杆的第一端与第三连杆，所述第二连杆的第一端呈扇形，在所述扇形的边缘设置齿；所述第三连杆的第一端通过第五销轴与所述第二手柄连接，所述第三连杆的第二端设置推钮，所述第三连杆朝向所述第二连杆的第一端的一侧设置齿。
  15. 如权利要求14所述的钳口平移的板钳，其特征在于，所述第二手柄上设置卡槽。
  16. 如权利要求14所述的钳口平移的板钳，其特征在于，所述锁定机构包括第三弹性部件。
  17. 如权利要求15所述的钳口平移的板钳，其特征在于，所述第三弹性部件为扭簧。
  18. 如权利要求1所述的钳口平移的板钳，其特征在于，所述连接部分上设置标尺，所述标尺用于测量所述第一钳口与所述第二钳口之间的距离。
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CA2950205A1 (en) 2015-12-03
US9862074B2 (en) 2018-01-09
CA2950205C (en) 2019-09-24
EP3150334B1 (en) 2019-11-06
US20170066111A1 (en) 2017-03-09
EP3150334A1 (en) 2017-04-05
AU2014396046B2 (en) 2019-01-17
EP3150334A4 (en) 2017-06-14

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