CN204094656U - Locking pliers - Google Patents
Locking pliers Download PDFInfo
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- CN204094656U CN204094656U CN201420400589.XU CN201420400589U CN204094656U CN 204094656 U CN204094656 U CN 204094656U CN 201420400589 U CN201420400589 U CN 201420400589U CN 204094656 U CN204094656 U CN 204094656U
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- handle
- locking
- guide rod
- locking pliers
- connecting rod
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Abstract
The utility model provides a kind of locking pliers, comprise the first chuck, second chuck, first handle and second handle, first chuck is installed on first handle, second chuck is pivotally mounted on first handle, and be pivotally mounted on second handle by the first tie point, this locking pliers also comprises single connecting rod, slide mechanism and retaining mechanism, one end of linkage is pivotally mounted on second handle by the second tie point, the other end is pivotally mounted on slide mechanism by the 3rd tie point, slide mechanism and retaining mechanism are slidably mounted on described first handle.Single connecting rod improves the support strength of connecting rod, and the setting of multiple locking plate improves the efficiency of locking, also reduces the processing cost of locking plate, and retaining mechanism and slide mechanism are located on guide rod, simplify assembly technology.
Description
Technical field
The utility model relates to a kind of hand-operated tools, particularly relates to a kind of locking pliers.
Background technology
Locking pliers is mainly used in holding parts and is convenient to part processing, as holding parts to carry out riveting, to weld, the processing such as grinding, relative to common pliers, the jaw of locking pliers can produce larger clamping force affects processing to keep part not get loose.In addition, locking pliers can also work as spanner use.
Common pliers generally comprises binding clip and handle, acts on the power on handle, through the conversion of lever principle, is transformed on binding clip and becomes large active force.But once the power acted on handle disappears, jaw just unclamps naturally, can not continue holding workpiece.Locking pliers employs the principle of lever due to twice, and therefore, the power acted on handle is transformed by twice lever principle, the clamping force times over the power of applying that finally can be formed at jaw place.
The patent No. is the patent of US6591791 and US6776072, discloses a kind of adjustable locking pliers, during its jaw clamping different size workpiece, does not need adjusting jaw size in advance, and can realize locking.The linkage of this locking pliers between two handles comprises arm and cam, and arm is pivotally attached on handle, and cam is pivotally attached on arm, and locking original paper is pivotally attached on cam.Regulating element is arranged on arm, and can interact with cam, by the adjustment regulating position of components, can play the object of adjusting jaw clamping force.As can be seen from the description of above-mentioned patent, realizing locking from the power input point handle to locking element, there is the intermediate link of arm and cam in centre, and it is not strong that the existence of these two links result in rigidity of support.In addition, visible in the description of above-mentioned patent and accompanying drawing, locking element is a lock dog, by realizing locking with the change of guide rod angle.But from the validity consideration of locking, single lock dog needs very high precision, could be formed to fit with guide rod produce frictional force thus effectively lock.And high production precision, need the explained hereafter of being cast by essence, but the production cost of essence casting is higher.In the assembling process of locking pliers, except lock dog can be located on guide rod fast, remaining part such as cam, arm and regulating element all will be installed respectively, and installation process is more loaded down with trivial details.
Therefore, existing locking pliers also exists the defect that shaft portion rigidity of support is not strong, locking validity is not high, production cost is high and assembling is complicated.
Utility model content
Far-end in the utility model refers to the one end away from chuck, and near-end refers to the one end near chuck.
Because the locking pliers of prior art exists the defect that shaft portion rigidity of support is not strong, locking validity is not high, production cost is high and assembling is complicated, the utility model provides the locking pliers that a kind of shaft portion rigidity of support is strengthened, locking efficiency improves, production cost reduces and assembly complexity reduces.
Locking pliers of the present utility model, comprise the first chuck, the second chuck, first handle and second handle, first chuck is installed on first handle, second chuck is pivotally mounted on first handle, and be pivotally mounted on second handle by the first tie point, this locking pliers also comprises single connecting rod and slide mechanism, one end of connecting rod is pivotally mounted on second handle by the second tie point, the other end is pivotally mounted on slide mechanism by the 3rd tie point, and slide mechanism is slidably mounted on described first handle; For locking the retaining mechanism of locking pliers; And for the governor motion of adjusting locking pliers clamping force.
Further, one end that connecting rod is connected with slide mechanism is made up of curved section, and large away from the curved section curvature of first handle near the curved section ratio of curvature of first handle.
Further, connecting rod is made up of high-strength material, as middle carbon high strength carbon structural steels or high-carbon steel are made.
Further, connecting rod is installed on second handle by rivet on described second tie point, and the 3rd tie point is installed on slide mechanism by pin.
Further, the retaining mechanism of locking pliers of the present utility model is installed on second handle slidably, and is positioned at slide mechanism near first handle distal side.
Further, retaining mechanism comprises guide rod and locking plate, and guide rod is located on locking plate, and guide rod is arranged on described first handle.
Further, locking plate is that multi-disc folds use, and multi-disc locking plate is fitted mutually.
Further, the cross section of guide rod is fillet trapezoid, and the centre of locking plate has for guide rod through hole, and this hole is set to have the fillet trapezoid identical with the shape of cross section of guide rod, and guide rod and locking plate are matched in clearance.
Further, the governor motion of this locking pliers is arranged on guide rod, and between slide mechanism and retaining mechanism, governor motion is configured to can be subjected to displacement on the length direction of guide rod.
Further, this governor motion is configured to, and when governor motion reaches maximum displacement towards the either end of guide rod, when locking pliers is locked, one end that connecting rod is connected with slide mechanism can contact with governor motion.
Further, this governor motion comprises adjustment screw and carrier, and carrier is arranged on guide rod, and adjustment screw is arranged on carrier, and can relative to the displacement of carrier generation along guide rod direction.
Further, the cross section of this carrier is identical with the cross section of described locking plate, and has the hole identical with clip shape size in the position identical with locking plate, and guide rod is through the hole on carrier.
Further, this locking pliers also comprises the 3rd handle, 3rd handle is pivotably mounted on second handle, and is configured to: when the 3rd handle away from one end of pivotal point near described second handle time, the 3rd handle can act on described connecting rod near one end of pivotal point.
Further, the position that connecting rod and the 3rd handle act on mutually has circular arc type projection.
Selectively, locking pliers of the present utility model, comprise the first chuck, the second chuck, first handle and second handle, first chuck is installed on first handle, second chuck is pivotally mounted on first handle, and be pivotally mounted on second handle by the first tie point, this locking pliers also comprises linkage and slide mechanism, one end of linkage is pivotally mounted on second handle by the second tie point, the other end is pivotally mounted on slide mechanism by the 3rd tie point, and slide mechanism is slidably mounted on described first handle.
Further, this linkage is single connecting rod.
Further, one end that connecting rod is connected with slide mechanism is curve, and the curvature of close first handle part is compared with larger than the curvature away from first handle part.
Further, locking pliers of the present utility model also comprises retaining mechanism, and this retaining mechanism is installed on second handle slidably, and is positioned at slide mechanism near first handle distal side.
Further, retaining mechanism comprises guide rod and locking plate, and guide rod is located on locking plate, and guide rod is arranged on described first handle.
Further, this locking pliers also comprises governor motion, and this governor motion is arranged on guide rod, and between slide mechanism and retaining mechanism, governor motion is configured to can be subjected to displacement on the length direction of guide rod.
Further, this governor motion comprises adjustment screw and carrier, and carrier is arranged on guide rod, and adjustment screw is arranged on carrier, and can relative to the displacement of carrier generation along guide rod direction.
Further, this locking pliers also comprises the 3rd handle, 3rd handle is pivotably mounted on second handle, and is configured to: when the 3rd handle away from one end of pivotal point near described second handle time, the 3rd handle can act on described connecting rod near one end of pivotal point.
Further, the position that connecting rod and the 3rd handle act on mutually has circular arc type projection.
Locking pliers of the present utility model, no matter the size of workpiece to be clamped, as long as be not more than the ultimate range between locking pliers two chucks, can clamp, and does not need to regulate the distance between chuck to adapt to the size of different workpieces in advance.To the adaptation of the large small workpiece of difference, the main move distance of slide block on guide rod that rely on realizes.
The connecting rod of locking pliers of the present utility model is single connecting rod, one end connecting handle, and the other end connects slide mechanism, and connecting rod is made up of the material of high strength, so just can improve the rigidity of support of connecting rod.
The clamping force that can regulate between chuck is coordinated between governor motion with connecting rod.When the action time of governor motion and connecting rod is done sth. in advance, namely after in the utility model, adjusting device is subjected to displacement towards chuck direction, starting initial angle change when locking greatly between second handle and connecting rod, thus, also can increase in the clamping force of chuck place generation.When the action time of governor motion and connecting rod becomes evening, namely after in the utility model, adjusting device is subjected to displacement to the direction deviating from chuck, diminish starting initial angle when locking between second handle and connecting rod, thus, the clamping force produced at chuck place also can reduce.
In addition, retaining mechanism is made up of multi-disc locking plate, multi-disc locking plate is in run-off the straight and when locking guide rod generation rubbing action, order successively can be had, and multi-disc locking plate can be locked when a part can produce frictional force to guide rod wherein, when the effective skin friction height of locking plate and guide rod, more effective locking can be produced.When the second tie point is positioned at the close first handle side of the first tie point and the 3rd tie point, the locking effect of generation can continue when cancelling applying power to maintain.
Many locking plates setting reduce requirement to locking plate punching precision, thus reduce manufacturing cost.In addition, slide mechanism, governor motion and retaining mechanism all have the hole passed for guide rod, and when assembling, what above-mentioned three mechanisms can be simple and quick wears on guide rod, and therefore assembly technology is simple.
Accompanying drawing explanation
Fig. 1 is the locking state profile of a detailed description of the invention in not holding workpiece of locking pliers of the present utility model.
Fig. 2 is the schematic diagram of the guide rod of a detailed description of the invention of locking pliers of the present utility model.
Fig. 3 is the side view of the guide rod of a detailed description of the invention of locking pliers of the present utility model.
Fig. 4 is the schematic diagram of the locking plate of a detailed description of the invention of locking pliers of the present utility model.
Fig. 5 is the governor motion schematic diagram of a detailed description of the invention of locking pliers of the present utility model.
Fig. 6 is the schematic diagram of the carrier of the governor motion of a detailed description of the invention of locking pliers of the present utility model.
Fig. 7 is the side view of the carrier of the governor motion of a detailed description of the invention of locking pliers of the present utility model.
Fig. 8 is the schematic diagram of the slide block of a detailed description of the invention of locking pliers of the present utility model.
Fig. 9 is the top view of the slide block of a detailed description of the invention of locking pliers of the present utility model.
Figure 10 is the schematic diagram of the connecting rod of a detailed description of the invention of locking pliers of the present utility model.
Figure 11 is the schematic diagram of the first support chip of a detailed description of the invention of locking pliers of the present utility model.
Figure 12 is the schematic diagram of the second support chip of a detailed description of the invention of locking pliers of the present utility model.
Figure 13 is the schematic diagram of the 3rd support chip of a detailed description of the invention of locking pliers of the present utility model.
Figure 14 is the schematic diagram of the 3rd handle of a detailed description of the invention of locking pliers of the present utility model.
Figure 15 is the profile of a detailed description of the invention in open mode of locking pliers of the present utility model.
Figure 16 is the locking state profile of a detailed description of the invention in holding workpiece of locking pliers of the present utility model.
Detailed description of the invention
As shown in Figure 1, in a detailed description of the invention of locking pliers of the present utility model, locking pliers comprises the first chuck 1, second chuck 2, first handle 3, second handle 4.First chuck 1 is fixedly mounted on first handle 3, second chuck 2 is roughly L-type, second chuck 2 is installed on second handle 4 by the first tie point 21 being positioned at L-type turning point place, and an arm of the L-type of the second chuck 2 is also installed on first handle 3 by the 4th tie point 22.Second chuck 2 is installed on second handle 4 at the first tie point 21 place by rivet, is installed on first handle 3 by rivet at the 4th tie point 22 place.Second chuck 2 can be pivoted relative to each other around the relative second handle 4 of the first tie point 21, also can be pivoted relative to each other relative to first handle 3 around the 4th tie point 22.
The one end being provided with hole 23, first spring 5 between first tie point 21 of the second chuck 2 and the 4th tie point 22 is connected in this hole 23, and the other end of the first spring 5 is connected with the back of first handle 3.Particularly, the back of first handle 3 has one and to cave in section 31, and the first spring 5 is connected with first handle 3 by this section 31 that caves in.Those skilled in the art are known, and the first spring 5 can also be connected by other means with first handle 3.The above-mentioned section 31 that caves in is connected with first handle 3 near the position of the first chuck 1, sinks in first handle 3 in the position away from the first chuck 1.This section 31 position on described first chuck 3 of caving in, relative to the position of the second chuck 2 relative to the first chuck 3, closer to the far-end of first handle 3.First spring 5 is tension spring, and when locking pliers is in an open position, the second chuck 2, by the impact of its screen resilience, draws to the direction away from the first chuck 1, produces the maximum open position of the first chuck 1 and the second chuck 2 by the first spring 5.
As shown in Figures 2 and 3, the cross section of guide rod 6 is fillet trapezoid, and namely the body shape of guide rod 6 is isosceles trapezoid, and the length of upper bottom surface 61 is less than the length of bottom surface 62, and four angles of this isosceles trapezoid are provided with round-corner transition.In one end 64 of guide rod 6, the upper bottom surface 61 of fillet trapezoid has otch 63.Guide rod 6 is provided with the second spring 7 in the side near first handle 3 far-end.The guide rod 6 of the near-end (namely near the side of chuck) of the second spring 7 is equipped with retaining mechanism 8.Further, in this embodiment, locking mechanism 8 is made up of 3 locking plates 81.Those skilled in the art is known, the variable amounts of locking plate 81, and when locking plate 81 quantity increases, the locking effect of generation is better.As shown in Figure 4, the top 82 of locking plate 81 has the fillet trapezoid hole 83 with guide rod 6 cross section same shape.Locking plate 81 realizes the matched in clearance with guide rod 6 by fillet trapezoid hole 83.3 locking plates 81 are arranged on guide rod 6 successively.
Retaining mechanism 8 is provided with governor motion 9 near the side of chuck.Further, in this embodiment, governor motion 9 is made up of (as shown in Figure 5) carrier 91 and adjustment screw 92.As shown in Figure 6 and Figure 7, the two sides of carrier 91 is respectively plane 911 and step surface 912.The aspect that plane 911 rises along step surface 912 is inclined upwardly, and plane 911 has the shape of cross section identical with locking plate 81, and can fit with locking plate 81.The step surface 912 of carrier 91 is towards the chuck side of locking pliers.The raised part 915 of step surface 912 of carrier 91 has through hole 913, and carrier 91 is arranged on guide rod 6 by being positioned at through hole 913.The shape of cross section of through hole 913 is roughly the same with the shape of cross section of guide rod 6, and through hole hole 913 is horn-like expansion near the part of step surface 912.Carrying out in the process of locking, the part of this horn-like expansion makes carrier 91 can swing to distal handle relative to guide rod 6, thus applies active force to locking plate 81, makes to produce frictional force between locking plate 81 and guide rod 6.。The part 916 of getting out of a predicament or an embarrassing situation of carrier 91 step surface 912 has through hole 914, and adjustment screw 92 is arranged in through hole 914, and can be subjected to displacement along through hole.The head of adjustment screw 92 is towards chuck side.
Governor motion 9 is provided with slide mechanism 10 near the side of chuck.Further, in this embodiment, slide mechanism 10 is slide block 101.As shown in Figure 8 and Figure 9, slide block 101 is U-shaped structure, the junction of U-shaped has fillet trapezoid hole 102, and the fillet trapezoid hole 102 of slide block 101 is identical with fillet trapezoid hole 83 size on locking plate 81, and slide block 101 is located on guide rod 6 by the fillet trapezoid hole 102 be located thereon.In the two-arm 103 of the U-shaped structure of slide block 101, be provided with through hole 104.
As shown in Fig. 1 and Figure 10, an end 111 of connecting rod 11 is arranged on second handle 4 by rivet, and another end 112 is arranged between the two-arm 103 of slide block 101 by pin.Those skilled in the art are known, and connecting rod 11 can also have other connected mode with second handle 4 and slide block 101.The end 112 of connecting rod 11 is multistage curve, and end 112 is large near the curvature of the curved section at connecting rod back 113, and the curvature away from the curved section at back 113 is little.The end 112 of connecting rod 11 is configured to when clamping work pieces, can contact with the adjustment screw 92 of governor motion 9.Carrying out in the process clamped, because connecting rod 11 exists the little curved section of curvature, moving towards distal handle so allow connecting rod to promote slide block 101.When connecting rod 11 is after the second tie point 16 turns an angle, the curved section that curvature is large starts to contact adjustment screw 92, and applies active force to adjustment screw 92, adjustment screw 92 by force transmission to carrier 91, pass to locking plate 81 more further, finally can realize locking.Therefore, the setting of the curved section of different curvature on the end 112 of connecting rod 11, allow locking pliers when clamping the workpiece of different size, do not need to regulate size between two chucks in advance, completed the promotion of connecting rod 11 pairs of sliding shoes 101 by the curved section that curvature is little, completed the effect of connecting rod 11 pairs of adjustment screw 92 by the curved section that curvature is large, make locking pliers start locking, and ensure that connecting rod 11 is consistent with the angle that second handle is formed when starting to lock, achieve chuck from conditioning function.Connecting rod 11 also has the projection 114 of circular arc, is positioned at the side that connecting rod back 113 is relative.
As Fig. 1,11, shown in 12 and 13, guide rod 6 is installed on first handle 3 by the first support chip 12, second support chip 13 and the 3rd support chip 14.Wherein, the first support chip 12 has T-shaped profile, the T-shaped two ends 121 of stretching out can with the groove interference fit that arranges on first handle 3, thus to be installed on first handle 3.Those skilled in the art are known, and the first support chip 12 can also be installed on first handle 3 by modes such as welding.First has hole 122 in the middle of support chip 12, and this hole 122 is fillet trapezoid, can have one end interference fits of otch 63 with guide rod 6.Second support chip 13 and the 3rd support chip 14 with the use of.Second support chip 13 has outstanding position 131, and the diameter at this outstanding position 131 is less than the diameter of the second support chip 13 body 132.Second has hole 133 in the middle of support chip 13, and this hole 133 is fillet trapezoid, can not have one end interference fits of otch with guide rod 6.3rd support chip 14 has T-shaped profile, T-shaped has the projection 141 of two centrally line symmetries, the side of described protruding 141 to the 3rd support chips 14 extends certain distance, the T-shaped of the 3rd support chip 14 two ends of stretching out can with the groove interference fit that arranges on first handle 3.Those skilled in the art are known, and the 3rd support chip 14 can also be installed on first handle 3 by modes such as welding.Second support chip 13 and the laminating of the 3rd support chip 14 use, and the outstanding position 131 on the second support chip 13 and the space limited between two projections 141 of the 3rd support chip 14 fasten.Do not have perforate in the middle of 3rd support chip 14, its side is that guide rod 6 provides certain supporting role.
As shown in Fig. 1 and Figure 14, it is arc-shaped that the locking pliers of this detailed description of the invention also has the 3rd handle the 15, three handle 15, is pivotally mounted on second handle 4 by rivet.Those skilled in the art is known, and the 3rd handle 15 can also be pivotally mounted on second handle 4 by other means.An end 151 of the 3rd handle 15 can contact with the projection 114 of connecting rod 11 in any case, and applies power to it.Another end 152 of 3rd handle 15 can along with the pivotable of the 3rd handle 15 near or away from second handle 4.When end 152 is near second handle 4, end 151 is just away from second handle 4; When end 152 is away from second handle 4, end 151 is just near second handle 4.
As shown in figure 15, when the locking pliers of this detailed description of the invention is in open mode, due to the effect of the screen resilience of the first spring 5, on the second chuck 2 first spring 5 and the second chuck 2 contact point on apply pulling force, make the second chuck 2 away from the first chuck 1, reach maximum open.When the second chuck 2 is opened to maximum open, the second chuck 2 applies active force by the first tie point 21 pairs of second handles 4, makes second handle 4 carry out pivotable around the first tie point 21, thus makes the angle between first handle 3 and second handle 4 maximum.Connecting rod 11 defines the maximum angle between first handle 3 and second handle 4.
During the locking pliers holding workpiece of this detailed description of the invention, its state as shown in figure 16.When clamping, user can pass through palm grip first handle 3, finger pull second handle 4, applies towards the power of first handle 3 to second handle 4, makes second handle 4 around the first tie point 21 pivotable.Under the effect of second handle 4, the second chuck 2 around the 4th tie point 22 pivotable, gradually near the first chuck 1.After the first chuck 1 and the second chuck 2 are adjacent to workpiece, the relative position of the first chuck 1 and the second chuck 2 no longer changes, and two chucks are almost parallel state.Under the effect of the power that second handle 4 applies user, continue to move towards first handle 3 around the first tie point 21.In the process, connecting rod 11 is subject to the active force that the second tie point 16 place is transmitted, and because connecting rod 11 is rigid structures, therefore can oppress slide block 101 along guide rod 6 to the distal movement of first handle, in the process, the relative position of two chucks can not change.Slide block 101 is connected successively with governor motion 9, retaining mechanism 8 and the second spring 7, and under the effect of slide block 101, governor motion 9 and retaining mechanism 8 are also along guide rod 6 towards the distal movement of first handle, and retaining mechanism 8 is oppressed the second spring 7 and compressed.When the second spring 7 is compressed to a certain degree, the end 112 of connecting rod 11 contacts with the head 921 of the adjustment screw 92 on governor motion 9.See Fig. 1, this detailed description of the invention locking pliers not holding workpiece time, the compression degree when compression degree of the second spring 7 is less than holding workpiece during its locking state.The workpiece of clamping is larger, and the second spring 7 is larger by the degree compressed.
After the end 112 of connecting rod 11 contacts with the head 921 of adjustment screw 92, the power that second handle 4 applies is applied in adjustment screw 92 further, because the carrier 91 of governor motion 9 is matched in clearance with guide rod 6, and the through hole 913 of carrier 91 is horn-like expansion through holes, therefore, under the active force of adjustment screw 92 towards first handle 3 far-end, carrier 91 can relative to guide rod 6 run-off the straight.The inclination of carrier 91 is applied on locking plate 81 further, and locking plate 81 is the run-off the straight of relative guide rod 6 respectively.When behind the angle of inclination that locking plate 81 reaches certain, edge and the guide rod 6 in the fillet trapezoid hole 83 of locking plate 81 create frictional force, and when the second tie point 16 is positioned at the close first handle side of the first tie point 21 and the 3rd tie point 17 line, create the locking of locking pliers, after locking, the clamping force of chuck is not because the power be applied on handle disappears and disappears.In the process, the requirement to locking plate punching precision is reduced to a certain extent more than the locking plate 81 of 1, allow to there is gap between locking plate 81, after locking plate 81 and guide rod 6 form certain angle of inclination, locking plate 81 always produces frictional force to guide rod 6 thus realizes locking.Now, the projection 114 on connecting rod 11 props up an end 151 of the 3rd handle 15, makes it to be close to second handle 4, and another end 152 is then away from second handle 4.After locking, locking pliers can clamping work pieces firmly.
When the workpiece of clamping will be unloaded, first apply towards the power of second handle 4 in the end 152 of the 3rd handle 15,3rd handle 15 pivotally rotates, and moving towards the direction away from second handle 4 in its end 151, and produces the active force away from second handle 4 to the projection 114 of connecting rod 11.Under the effect of this active force, connecting rod 11 is around the second tie point 16 pivotable, and the end 112 of connecting rod 11 moves relative to adjustment screw 92, reduces gradually the active force of adjustment screw 92.Afterwards, apply towards the power deviating from direction mutually at first handle 3 and second handle 4, the end 112 of connecting rod 11 is departed from adjustment screw 92.In the process, the carrier 91 of governor motion 9 and the locking plate of retaining mechanism 8 recover original angle of inclination, reduce, lock and removed the frictional force of guide rod 6.Under the effect of the screen resilience of the second spring 7, locking mechanism 8, governor motion 9 and slide mechanism 10 move towards chuck direction along guide rod 6.Afterwards, act on the effect of the power that the first tie point 21 produces in the thrust of connecting rod 11 and the pulling force of the first spring 5 to the second chuck 2 under, second handle 4, away from first handle 3 pivotable, until be opened to maximum angle, completes the operation unloading workpiece.
Adjustment screw 92 can be subjected to displacement in the through hole 914 of carrier 91.When certain displacement occurs towards chuck direction adjustment screw 92, connecting rod 11 and adjustment screw 92 are relative to coming in contact more early before not regulating.This means, locking plate 81 run-off the straight is to produce frictional force and start to lock and to after finally completing locking to guide rod 6, the clamping force formed between two chucks is than large before not regulating.In other words, when adjustment screw 92 is subjected to displacement towards chuck direction, larger clamping force can be produced.In contrast, when adjustment screw 92, to the direction away from chuck, certain displacement occurs, connecting rod 11 and adjustment screw 92 are relative to more late coming in contact before not regulating.This means, locking plate 81 run-off the straight is to produce guide rod 6 when frictional force starts to lock and after finally completing locking, and the clamping force formed between two chucks is than little before not regulating.In other words, when adjustment screw 92 is to when being subjected to displacement away from chuck direction, the clamping force weakened can be produced.
After tested, the locking pliers of this detailed description of the invention, when between two chuck, clamping thickness is the pressure sensor of 25mm, apply the load of 15kg at second handle tail end, the chucking power between two chucks is 350kg.When clamping the pole of 20mm, second handle applies the load of 12.8kg, and the acrotorque between two chucks is 52N*M.When clamping opposite side is the hexagonal rod of 20mm, the load of time 14.5kg on second handle, the acrotorque between two chucks is 103.5N*M.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (14)
1. a locking pliers, comprise the first chuck, second chuck, first handle and second handle, described first chuck is installed on described first handle, described second chuck is pivotally mounted on described first handle, and be pivotally mounted on described second handle by the first tie point, it is characterized in that, described locking pliers also comprises: single connecting rod and slide mechanism, one end of described connecting rod is pivotally mounted on second handle by the second tie point, the other end is pivotally mounted on described slide mechanism by the 3rd tie point, described slide mechanism is slidably mounted on described first handle, for locking the retaining mechanism of described locking pliers, and for regulating the governor motion of described locking pliers clamping force.
2. locking pliers according to claim 1, is characterized in that, one end that described connecting rod is connected with described slide mechanism is made up of curved section, and large away from the curved section curvature of first handle near the curved section ratio of curvature of first handle.
3. locking pliers according to claim 1, is characterized in that, described connecting rod is made up of middle carbon high strength carbon structural steels or high-carbon steel.
4. locking pliers according to claim 1, is characterized in that, described connecting rod is installed to by rivet on described second handle on described second tie point, and described 3rd tie point is installed on described slide mechanism by pin.
5. locking pliers according to claim 1, is characterized in that, described retaining mechanism is installed on described second handle slidably, and is positioned at described slide mechanism near described first handle distal side.
6. locking pliers according to claim 5, is characterized in that, described retaining mechanism comprises guide rod and locking plate, and described guide rod is located on described locking plate, and described guide rod is arranged on described first handle.
7. locking pliers according to claim 6, is characterized in that, described locking plate is multi-disc, and described multi-disc locking plate is fitted mutually.
8. locking pliers according to claim 6, it is characterized in that, the cross section of described guide rod is fillet trapezoid, the centre of described locking plate has the hole passed for described guide rod, described hole is set to have the fillet trapezoid identical with the shape of cross section of described guide rod, and described guide rod and described locking plate are matched in clearance.
9. locking pliers according to claim 1, is characterized in that, described governor motion is arranged on guide rod, and between described slide mechanism and described retaining mechanism, described governor motion is configured to can be subjected to displacement on the length direction of described guide rod.
10. locking pliers according to claim 9, it is characterized in that, described governor motion is configured to, when described governor motion reaches maximum displacement towards the either end of described guide rod, when described locking pliers is locked, one end that described connecting rod is connected with described slide mechanism can contact with described governor motion.
11. locking pliers according to claim 9, it is characterized in that, described governor motion comprises adjustment screw and carrier, and described carrier is arranged on described guide rod, described adjustment screw is installed on the carrier, and can relative to the displacement of described carrier generation along described guide rod direction.
12. locking pliers according to claim 11, is characterized in that, the cross section of described carrier is identical with the cross section of locking plate, and have the hole identical with described clip shape size in the position identical with described locking plate, and described guide rod is through the hole on described carrier.
13. locking pliers according to claim 1, it is characterized in that, also comprise the 3rd handle, described 3rd handle is pivotably mounted on described second handle, and be configured to: when described 3rd handle away from one end of pivotal point near described second handle time, described 3rd handle can act on described connecting rod near one end of described pivotal point.
14. locking pliers according to claim 13, is characterized in that, the position that described connecting rod acts on mutually with described 3rd handle has circular arc type projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400589.XU CN204094656U (en) | 2014-07-18 | 2014-07-18 | Locking pliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400589.XU CN204094656U (en) | 2014-07-18 | 2014-07-18 | Locking pliers |
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| Publication Number | Publication Date |
|---|---|
| CN204094656U true CN204094656U (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420400589.XU Withdrawn - After Issue CN204094656U (en) | 2014-07-18 | 2014-07-18 | Locking pliers |
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| Country | Link |
|---|---|
| CN (1) | CN204094656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328596A (en) * | 2014-07-18 | 2016-02-17 | 杭州巨星工具有限公司 | Locking pliers |
| CN106141947A (en) * | 2015-04-15 | 2016-11-23 | 杭州巨星工具有限公司 | A kind of hand-operated tools |
-
2014
- 2014-07-18 CN CN201420400589.XU patent/CN204094656U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328596A (en) * | 2014-07-18 | 2016-02-17 | 杭州巨星工具有限公司 | Locking pliers |
| CN105328596B (en) * | 2014-07-18 | 2019-03-12 | 杭州巨星工具有限公司 | Locking pliers |
| CN106141947A (en) * | 2015-04-15 | 2016-11-23 | 杭州巨星工具有限公司 | A kind of hand-operated tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20190312 |
|
| AV01 | Patent right actively abandoned |