CN204094654U - Unload force mechanisms and there is the ratchet wheel clamp unloading force mechanisms - Google Patents

Abstract

The utility model discloses and a kind ofly unload force mechanisms and there is the ratchet wheel clamp unloading force mechanisms, unload force mechanisms and comprise the first ratchet members, the second ratchet members, Lock Part, actuated components and reset components, first jig arm of ratchet wheel clamp is fixedly installed first ratchet members with first group of ratchet, second ratchet members with second group of ratchet is connected to the second jig arm by the second axle and can rotates relative to the second ratchet members; Second ratchet members is provided with the first hole, Lock Part also can rotate and translation through the first hole in the first hole, and actuated components makes second of engagement group of ratchet be separated with first group of ratchet by turn applying first time actuating to Lock Part with second time actuating.By twice actuating, of the present utility model to have the operation that the ratchet wheel clamp unloading force mechanisms makes two of engagement groups of ratchets be separated be stable, and structure is simple, processes simple and easy, easy to use, and the operation of user smoothly and laborsaving.

Description

Unload force mechanisms and there is the ratchet wheel clamp unloading force mechanisms

Technical field

The utility model relates to field of hand, particularly relates to a kind ofly to unload force mechanisms and have the ratchet wheel clamp unloading force mechanisms.

Background technology

Hand tools refers to and holds with a hand, and with manpower or other dynamic actions of controlling with people in the small instruments and tools of object, it cuts and auxiliary finishing for manual, generally all with handle, is easy to carry.Pliers is the hand tools that a class is commonly used, for clamping, fixing processing work or torsion, bend, cutting off tinsel.Wherein for clamping, the pliers of fixing processing work, be also called clamp or folder.

The profile of clamp or folder is generally V-shaped, usually by the clamp that two chip architectures, moulding are mutually symmetrical, partly overlapping and fixedly form through riveted.Folder can its riveted tie point be that fulcrum opens conjunction flexibly, and its design contains lever principle, less external force (as the hand-power be applied in jig arm) can be changed into the larger chucking power in dop place thus, folder can be clamped effectively.

Owing to folder artificial in prior art not being arranged the mechanism of locking jig arm position, when gripping objects, the hand of people must keep the power larger to folder applying one, until clamping task completes.So not only to have required great effort but also time-consuming, and clamp unreliable.To this, United States Patent (USP) " Vise-Grip or Expanding Pliers " (patent No.: US6708587B1) provides a kind of technical scheme utilizing the position of ratchet locking jig arm, it arranges the parts with ratchet respectively in two jig arm, the jig arm that one of them parts connects relative to it is immovable, the jig arm that another parts can connect relative to it is rotated, ratchet on two parts intermeshes, and two groups of intermeshing ratchets are set to the motion in opposite directions of permission two jig arm and hinder the motion that two jig arm deviate from mutually; And one actuated components is set in the outside (it is away from the side of another jig arm) of some jig arm, being in particular one can automatically reset button; What by Lock Part, actuated components was connected to that the jig arm that can connect relative to it rotates has on the parts of ratchet, and to control this components bonding with ratchet, whether another have the parts of ratchet.

When using this folder, when user applies a pair power in opposite directions (direction of power that namely jig arm is subject to is another jig arm of sensing) to two jig arm, Lock Part keeps two groups of ratchets to intermesh, two groups of ratchets occur can movement relative to each other, allow two jig arm generation motions toward each other thus, so the motions that two dop parts occur toward each other need by the object clamped to clamp; When object is clamped, user cancels the power in opposite directions applied two jig arm, and Lock Part keeps two groups of ratchets to intermesh, and two groups of ratchets can not relative to each other move, and dop keeps clamp position thus; Press actuated components as user and two jig arm applied to a pair reverse power (namely the direction of power that is subject to of jig arm is for deviating from another jig arm), Lock Part is opened, chucking power is discharged at least in part, two groups of ratchets no longer intermesh, allow two jig arm that motion reverse each other occurs thus, so two dop parts motion reverse each other occur with release by the object clamped.

But, actuated components due to the folder of the prior art is arranged on the outside of an one jig arm, discharge by clamp object time, user needs to press actuated components, can know, user needs the power applying to point to another jig arm to the jig arm at actuated components place when pressing actuated components, the direction of this power is contrary to the direction of the active force that the hand gripping it applies in twice actuation process with this jig arm, and therefore such operation is not smoothly and comparatively require great effort.

Therefore, those skilled in the art is devoted to develop and a kind ofly unloads force mechanisms and have the ratchet wheel clamp that unloads force mechanisms to allow user can smoothly and operate effortlessly.

Utility model content

Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of force mechanisms and have the ratchet wheel clamp unloading force mechanisms of unloading, by arranging two groups of ratchets, actuated components and Lock Parts, user can utilize the position of intermeshing two groups of ratchet locking jig arm and realize discharging at least in part to the chucking power of held object with smoothly and the clamping controlled effortlessly object and release.

For achieving the above object, the utility model provides one and unloads force mechanisms, be arranged on instrument, for discharging the chucking power of described instrument to object at least in part, comprise Lock Part, actuated components, the first ratchet members with first group of ratchet and the second ratchet members with second group of ratchet, one end of described first ratchet members is fixedly installed on described instrument, described second ratchet members is connected on described instrument, described first group of ratchet and described second group of ratchet match, it is characterized in that, described second ratchet members is provided with the first hole, described first hole comprises the first bore portion and the second bore portion, described Lock Part is located in described first hole,

Described actuated components is connected to apply described Lock Part to activate for the first time with described Lock Part; Described first time activates: make described Lock Part turn to the second place from primary importance in described first bore portion, to make described first ratchet members drive described second ratchet members by described first group of ratchet of engagement and described second group of ratchet, described Lock Part enters described second bore portion from described first bore portion.

Further, described actuated components is connected with described Lock Part and activates to apply second time to described Lock Part after activating in described first time, and described second time actuating is: first group of ratchet is separated with described second group of ratchet.

Further, it is the first arc column that described Lock Part comprises cross section, described first column rotates in described first bore portion, the translation in described second bore portion of described first column, has the part of non-smooth connection between described first bore portion and described second bore portion.

Further, the part of described non-smooth connection is step, when described first column is in described primary importance in described first bore portion, the bending sidewall sections of described first column of described step conflict enters described second bore portion to stop described Lock Part from described first bore portion; When described first column is in the described second place in described first bore portion, described step does not contact the bending sidewall sections of described first column, and described Lock Part can enter described second bore portion from described first bore portion.

Further, the first end of described actuated components is connected to drive described Lock Part with described Lock Part, and described actuated components has the spanner portion extended from its first end.

Further, described second ratchet members is provided with stop part, described stop part protrudes from described second ratchet members; Described stop part is arranged on described spanner portion and is fixed on the path of end swing of described instrument to described first ratchet members.

Further, described in unload force mechanisms and also comprise reset components, described reset components comprises the first flexible member, and described first flexible member is arranged on described second bore portion, and described first flexible member is conflicted on the sidewall of described first column.

Further, described first flexible member is Compress Spring, conflicts on described first column in an end of described Compress Spring.

Further, described reset components also comprises the second flexible member, and described second flexible member is conflicted on the sidewall of described spanner portion away from described stop part.

Further, described second flexible member is torsionspring, conflicts in described spanner portion in an end of described second flexible member.

Further, described instrument is folder or pincers.

The utility model additionally provides a kind of ratchet wheel clamp, for gripping objects, have and foregoingly unload force mechanisms, wherein said ratchet wheel clamp comprises the first jig arm and the second jig arm, and described first jig arm can be rotated around the first axle being connected described first jig arm and described second jig arm with described second jig arm; One end of described first ratchet members is fixedly installed in described first jig arm, described second ratchet members is connected to described second jig arm by the second axle be arranged in described second jig arm, and described second ratchet members can be rotated relative to described first ratchet members.

Further, described first group of ratchet and described second group of ratchet are set to described first group of ratchet of engaging and described second group of ratchet allows the move toward one another of described first jig arm and described second jig arm and stop the opposing motion of described first jig arm and described second jig arm.

Further, the first end of described first ratchet members is fixed in described first jig arm, and the second end of described first ratchet members points to described second jig arm; The first end of described second ratchet members points to described first jig arm, and the second end of described second ratchet members points to described second jig arm; Described second group of ratchet is distributed in described second ratchet members towards on the sidepiece of described first axle from the described first end of described second ratchet members; Described first group of ratchet is distributed on the sidepiece of described first ratchet members away from described first axle.

Further, described actuated components comprises the first wall and the second wall that be arranged in parallel, and described second ratchet members is partly sandwiched between described first wall and described second wall; Described actuated components has pair of holes, and described pair of holes is respectively on described first wall and described second wall, and described Lock Part to be located in described pair of holes and can not to rotate in described pair of holes.

Further, described ratchet wheel clamp also comprises attaching parts, and described attaching parts comprise the 3rd wall and the wall be arranged in parallel, are connected with retaining wall between described 3rd wall and described wall; Described second ratchet members is partly sandwiched between described 3rd wall and described wall; Described attaching parts are partly sandwiched between described first wall and described second wall; Described retaining wall is disposed in described actuated components on the path that described second jig arm swings.

Further, described second ratchet members is provided with the second hole of strip, described second axle also laterally can move through described second hole in described second hole; Described second hole is closed pore or open pore.

Further, described attaching parts have the second pair of hole coordinated with described second axle and the 3rd pair of hole coordinated with described Lock Part, described second pair of hole is respectively on described 3rd wall and described wall, and described 3rd pair of hole is respectively on described 3rd wall and described wall; Described second axle is through described second pair of hole, and described Lock Part rotates in described 3rd pair of hole through described 3rd couple of Kong Bingke.

Further, described second ratchet members has bossing on the surface of described 3rd wall and described wall, and described bossing contacts with described wall with described 3rd wall; Described bossing is strip, extends along the direction of described second ratchet members relative to described attaching parts movement.

In a better embodiment of the present utility model, provide a kind of force mechanisms and there is the ratchet wheel clamp unloading force mechanisms of unloading, first jig arm of ratchet wheel clamp is connected by the first axle with the second jig arm, be furnished with between its first jig arm and second jig arm and unload force mechanisms, this unloads force mechanisms and comprises the first ratchet members, the second ratchet members, actuated components, Lock Part, attaching parts and reset components.Wherein, first ratchet members one end is fixedly connected in the first jig arm, and the other end points to the second jig arm, is distributed with first group of ratchet at its sidepiece away from the first axle; Second ratchet members is provided with the first hole of the second bore portion and the second hole of strip that comprise the first circular bore portion and strip, second hole is the open pore of opening towards the second jig arm, the second axle be arranged in the second jig arm can rotate around the second axle to make the second ratchet members through the second hole, its other end points to the first jig arm, it is also distributed with can with second of first group of ratchet engagement group ratchet; First group of ratchet and second group of ratchet are arranged to first group of ratchet of engagement and second group of ratchet allows the move toward one another of the first jig arm and the second jig arm and stop the opposing motion of the first jig arm and the second jig arm; Actuated components has spanner portion, and spanner portion extends from the first end of actuated components to the direction deviating from the first axle, has flat first wall and the second wall that be arranged in parallel, the first wall and the second wall have pair of holes at this first end actuated components; Lock Part comprises the first connected column and the second column, and wherein the cross section of the first column is arc, and the first column also can rotate and translation in the second bore portion through the first hole in the first bore portion; Lock Part is also through the pair of holes of the first end of actuated components, and actuated components can drive Lock Part thus; Attaching parts comprise flat 3rd wall and the wall be arranged in parallel, and the 3rd is connected with the 3rd column and retaining wall between wall and wall, and the 3rd wall and wall have second pair of hole of cooperation second axle and coordinate the 3rd pair of hole of Lock Part; Second ratchet members is partly sandwiched in the 3rd between wall and wall, and the 3rd column to be longitudinally arranged in the second hole and in the outside of the second axle; Second ratchet members and attaching parts are partly sandwiched between the first wall and the second wall.Reset components comprises the first flexible member, and it is a Compress Spring, to be arranged in second bore portion in the first hole and the sidewall of the first column of conflicting; Reset components also comprises the second flexible member, it is a torsionspring, it is set on the second axle, two end portion conflict in the second jig arm and spanner portion, this second flexible member make actuated components keep contact at be arranged on the second ratchet members stop part on.When user does not apply towards the power of the second jig arm spanner portion, reset components makes the first column remain in the first bore portion, now second group of ratchet keeps the state being engaged in first group of ratchet, and the first dop part of ratchet wheel clamp and the second dop part keep the chucking power to object; When user applies the enough large power towards the second jig arm to spanner portion, actuated components applies first time actuating to Lock Part, first column rotates and then moves to the second bore portion in the first bore portion, now second group of ratchet keeps the state being engaged in first group of ratchet, and the first dop part of ratchet wheel clamp and the second dop part are released into the chucking power to object of small part; When user continues to apply towards the power of the second jig arm to spanner portion, actuated components applies second time to Lock Part and activates, and drive the second ratchet members to rotate around the second axle, thus second group of ratchet is separated with first group of ratchet.

As can be seen here, the force mechanisms that unloads of the present utility model, by layout two groups of ratchets, actuated components and Lock Parts, achieves the chucking power discharged at least in part held object; Of the present utility model have the ratchet wheel clamp application of unloading force mechanisms and unload force mechanisms, makes the disconnected from each other of first of engagement group of ratchet and second group of ratchet by twice actuating of actuated components to Lock Part.When first time activates, two dop parts of ratchet wheel clamp are released into the chucking power of small part, and tooth engagement also keeps; When second time activates, two groups of ratchets of engagement are separated.Visible; because first time activates, at least part of chucking power is released, the active force between two groups of ratchets of engagement is reduced, and the operation that second time makes two of engagement groups of ratchets be separated in activating thus can occur under mode more stably; and little to the damage of ratchet, can ratchet be protected.In addition, because the actuated components unloading force mechanisms and have a ratchet wheel clamp unloading force mechanisms of the present utility model is arranged between the first jig arm and the second jig arm, discharge by clamp object time, user is identical to the direction of the power that actuated components applies and the second jig arm in the twice actuating direction of active force to the hand gripping it, and such operation is laborsaving smoothly again.

Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.

Accompanying drawing explanation

Fig. 1 is in a preferred embodiment, the front view of ratchet wheel clamp of the present utility model.

Fig. 2 is the rearview of the ratchet wheel clamp shown in Fig. 1.

Fig. 3 shows the STRUCTURE DECOMPOSITION figure of the first ratchet members of the ratchet wheel clamp shown in Fig. 1, the second ratchet members, Lock Part, actuated components and reset components.

Fig. 4 shows the pattern in the first hole in the second ratchet members, and illustrated is its cross section.

When Fig. 5 shows and does not apply power to actuated components, the position relationship of the first ratchet members of the ratchet wheel clamp shown in Fig. 1, the second ratchet members, Lock Part, actuated components, attaching parts and reset components.

Fig. 6 shows the position relationship of the second ratchet members shown in Fig. 5, Lock Part, the first flexible member and the second axle.

Fig. 7 shows and applies after power drives Lock Part to rotate to actuated components, the position relationship of the first ratchet members of the ratchet wheel clamp shown in Fig. 1, the second ratchet members, Lock Part, actuated components, attaching parts and reset components.

Fig. 8 shows the position relationship of the second ratchet members shown in Fig. 7, Lock Part, the first flexible member and the second axle.

Fig. 9 shows and applies power to actuated components and drive after Lock Part moves, the position relationship of the first ratchet members of the ratchet wheel clamp shown in Fig. 1, the second ratchet members, Lock Part, actuated components, attaching parts and reset components.

Figure 10 shows the position relationship of the second ratchet members shown in Fig. 9, Lock Part, the first flexible member and the second axle.

Figure 11 shows and applies power to actuated components and after driving the second ratchet members to rotate, the position relationship of the first ratchet members of the ratchet wheel clamp shown in Fig. 1, the second ratchet members, Lock Part, actuated components, attaching parts and reset components.

Figure 12 shows the position relationship of the second ratchet members shown in Figure 11, Lock Part, the first flexible member and the second axle.

Detailed description of the invention

Fig. 1 and 2 shows of the present utility modelly in a preferred embodiment has the ratchet wheel clamp unloading force mechanisms, its first jig arm 101 is connected by the first axle 100 with the second jig arm 102, and can rotate to control the closed of the first dop part 11 and the second dop part 12 around the first axle 100 or open.Particularly, when user to the first jig arm 101 and the second jig arm 102 apply power make their (namely move toward one another occur for the first jig arm 101 and the second jig arm 102) close to each other time, first dop part 11 and the second dop part 12 also close to each other, clamp the object of such as workpiece thus; When user to the first jig arm 101 and the second jig arm 102 apply power make them mutually away from (namely opposing motion occurs for the first jig arm 101 and the second jig arm 102) time, first dop part 11 and the second dop part 12 also mutual away from, unclamp workpiece thus.

Be furnished with between first jig arm 101 and the second jig arm 102 and unload force mechanisms, for discharging its chucking power to workpiece at least in part when ratchet wheel clamp unclamps workpiece.Unload force mechanisms and comprise the first ratchet members 110, second ratchet members 120, Lock Part 300, attaching parts 400, actuated components 500 and reset components, Fig. 3 shows their STRUCTURE DECOMPOSITION figure.

One end of first ratchet members 110 is fixedly connected in the first jig arm 101, and makes it be fixedly connected with more reliably with the one 101 jig arm by built in items 111; Its other end points to the second jig arm 102.First ratchet members 110 is distributed with first group of ratchet on its sidepiece away from the first axle 100.

One end of second ratchet members 120 is provided with the second hole 121 of strip, and in the present embodiment, the second hole 121 is open pores, and it has the opening towards the second jig arm 102.In other embodiments, the second hole 121 can also be closed pore.The second axle 200 be arranged in the second jig arm 102 longitudinally passes the second hole 121, the bearing of trend of the second axle 200 is identical with the first axle 100, it is arranged to cross section perpendicular to the second hole 121 (perpendicular to the cross section of the first axle in the second hole 121, in this description, unaccounted cross section is all the cross section perpendicular to the first axle), the second ratchet members 120 can be rotated around the second axle 200 thus.Second hole 121 is laterally arranged, allow the first ratchet members 110 to drive the second ratchet members 120 laterally to move by first and second group ratchet of engagement thus, " transverse direction " in this description refers to along the direction from the first jig arm 101 to the second jig arm 102 or along the direction from the second jig arm 102 to the first jig arm 101.

The other end of the second ratchet members 120 points to the first jig arm 101, second ratchet members 120 be distributed with on its sidepiece towards the first axle 100 can with second of first group of ratchet engagement group ratchet, preferably, second group of ratchet distributes from one end of sensing first jig arm 101 of the second ratchet members 101.

The flank of tooth of each ratchet of first group of ratchet and second group of ratchet is arranged to and makes first of engagement group of ratchet and second group of ratchet allow the move toward one another of the first jig arm 101 and the second jig arm 102 and stop the opposing motion of the first jig arm 101 and the second jig arm 102.

In the present embodiment, Lock Part 300 comprises the first connected column 301 and the second column 302.Second column 302 is cylindrical, and its cross section is the first circle; First column 301 is incomplete cylindrical, and its cross section is arc, and this arc arc is the part-circular periphery of a circle, and this circle is the second circle, and the arc length of this arc arc is greater than the half of the circumference of the second circle.Preferably, the position relationship of the first column 301 and the second column 302 is on their cross section, and the first circle and the second circle are arranged to one heart, as shown in Figure 5.Lock Part 300 can be integrated, also can be the first column 301 and the second column 302 is shaping respectively after be fixedly connected to form.

First column 301 is located in the first hole 122 of the second ratchet members 120, and can rotate in this hole and can laterally translation when turning to certain angle.Preferably, the first hole 122 is arranged on the middle part of the second ratchet members 120, and Fig. 4 shows its cross section.As seen from Figure 4, the first hole 122 comprises the first circular bore portion 1221 and the second bore portion 1222 of irregular strip; First bore portion 1221 close to the second jig arm, has the part of not rounded slip close to the first jig arm 101, second bore portion 1222 between the two, and it is a step 1223.The shape in the first hole 122 is set to the first column 301 can be rotated in the first bore portion 1221 but can not translation and can translation but can not rotate in the second bore portion 1223.

Attaching parts 400 are slide blocks, and it comprises two flat walls be arranged in parallel (the 3rd wall and wall), for the second ratchet members 120 of holding portion.3rd is connected with the 3rd column 410 and retaining wall 420 between wall and wall, preferably, the 3rd column 410 is cylindrical, and it is perpendicular to the 3rd wall and wall; Retaining wall 420 is one section of wall perpendicular to the 3rd wall and wall.3rd wall and wall offer the second pair of hole 421,422 for coordinating with the second axle 200 and the 3rd pair of hole for coordinating with Lock Part 300, and Fig. 3 shows the hole 431 in the 3rd pair of hole, and another hole is not shown.Its mesopore 421 and hole 431 on the 3rd wall, on another Kong wall in hole 422 and the 3rd pair of hole.

Second ratchet members 120 is sandwiched in the 3rd between wall and wall, and can slide relative to attaching parts 400.Preferably, the second ratchet members 120 has projection, as projection 124 on two surfaces of the 3rd wall and wall.These projections protrude from the above-mentioned surface of the second ratchet members 120, for contacting with the second ratchet members 120, they are strip, extend along the direction of the second ratchet members 120 relative to attaching parts 400 movement, reduce the second ratchet members 120 thus at the force of sliding friction occurring to be subject to when moving relative to attaching parts 400.

An end of actuated components 500 is used for coalescing lock parts 300, in the present embodiment, this end comprises two flat walls be arranged in parallel (the first wall and the second wall), first wall and the second wall have the pair of holes 531,532 for coordinating with Lock Part 300, its mesopore 531 is on the first wall, and hole 532 is on the second wall.Actuated components 500 also has from above-mentioned end to the part that the direction deviating from the first axle 100 extends, in the present embodiment, this part is the spanner portion 510 of trigger-like, and spanner portion 510 is for applying power to change the state of the engagement/disengagement of first group of ratchet and second group of ratchet for user.

In spanner portion 510 towards on the path that the first jig arm 101 swings, second ratchet members 120 is provided with stop part 123, in the present embodiment, the second ratchet members 120 has two stop parts, be all the part protruding from the second ratchet members 120 along the direction being parallel to the first axle 100.The degree that stop part swings to the first jig arm 101 for limiting spanner portion 510.The retaining wall 420 of attaching parts 400 is disposed in spanner portion towards on the path that the second jig arm 102 swings, its degree swung to the second jig arm 102 for limiting spanner portion 510.

Reset components comprises the first flexible member 610 (see Fig. 6) and the second flexible member 620.First flexible member 610 is Compress Springs, it is laterally arranged in the second bore portion 1222, and the first column 301 of one end thereof conflict (namely contacting and extruding) Lock Part 300 is maintained in the first bore portion 1221 to make the first column 301.Second flexible member 620 is torsionsprings, and its turn is set on the second axle 200, and one end thereof 621 is conflicted on the sidewall of spanner portion 501 away from second group of ratchet, preferably, this sidewall has the groove 540 coordinated with end 621; Another end 622 is conflicted on the inwall of the second jig arm 102.Be subject to the conflict of the end 621 of the second flexible member 620, actuated components 500 keeps conflict stop part 123.

In combination second ratchet members 120, Lock Part 300, attaching parts 400, when actuated components 500 and reset components, second ratchet members 120 is partly clipped in attaching parts 400 the 3rd between wall and wall and the 3rd column 410 is arranged in the second hole 121 opening part and thus in the outside (namely closer to the side of the second jig arm 102) of the second axle 200, second ratchet members 120 and attaching parts 400 are partly clipped between the first wall and the second wall, and by Lock Part 300 successively through hole 532, another hole in the 3rd pair of hole, first hole 122, hole 431 and hole 531.Wherein, first column 301 is through another hole in hole 532, the 3rd pair of hole and the first hole 122, second column 302 is through hole 431 and hole 531, and the rotation relative to another hole in hole 532, the 3rd pair of hole, the first hole 122, hole 431 and hole 531 can not occur Lock Part 300.In addition, the second axle 200 is successively through another turn of a turn of the second flexible member 620, hole 121, hole 422, second, hole 421 and the second flexible member 620.

The two groups of ratchets clamping the ratchet wheel clamp of workpiece keep engaging each other, as shown in Figure 5,6.When being separated by the two groups of ratchets clamping the engagement of the ratchet wheel clamp of workpiece, actuated components 500 pairs of Lock Parts 300 in turn apply first time actuating and second time activates, and the process (Fig. 7-10) of wherein first time actuating is in particular:

When user applies the power F towards the second jig arm to spanner portion 510, as shown in Figure 7, when power F is enough large, the restoring force of actuated components 500 energy overcome friction and the second flexible member 620 rotates, it drives Lock Part 300 and makes it turn to the position shown in Fig. 7,8, and the first column 301 of the Lock Part 300 in this position can be crossed step 1223 and enter the second bore portion 1222.Owing to being applied the active force in a pair opposing direction to the first jig arm 101 and the second jig arm 102 by the workpiece clamped simultaneously, make the first jig arm 101 and the second jig arm 102 have the trend that opposing motion occurs, the first jig arm 101 drives the second ratchet members 120 by the first ratchet members 110 thus; Relative to the second ratchet members 120, Lock Part 300 can overcome the restoring force of the first flexible member 610 of reset components, move to the second bore portion 1222, as shown in Fig. 9,10 from first bore portion 1221 in the first hole 122.Thus, the distance between the first dop part 11 and the second dop part 12 can increase, and releases at least part of to by the chucking power of object clamped; Active force between two groups of ratchets of engagement is correspondingly reduced.

The process (Figure 11,12) that second time activates is in particular: user continues to apply towards the power F of the second jig arm to spanner portion 510, actuated components 500 makes the second ratchet members 120 rotate around the second axle 200, thus second group of ratchet is separated with first group of ratchet.Due to this separation be active force between these two groups of ratchets less in carry out, it is more steady and little to the damage of ratchet.After second group of ratchet is separated with first group of ratchet, be there is a bit of displacement by the restoring force of replying the first flexible member 610 of parts in the direction making the second ratchet members 120 to the second jig arm 102, thus make the first column 301 of Lock Part 300 get back to the first bore portion 1221, as shown in figure 12.

After user cancels the power F applied spanner portion 510, the direction making spanner portion 510 to second group of ratchet is rotated and conflicts on stop part 123 by the restoring force of the second flexible member 620, spanner portion 510 drives Lock Part 300 to rotate, its first column 301 is resetted (position shown in Fig. 5,6), and now step 1223 makes two groups of ratchets keep engagement by Lock Part 300.

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 those skilled 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 (19)

1. one kind is unloaded force mechanisms, be arranged on instrument, for discharging the chucking power of described instrument to object at least in part, comprise Lock Part, actuated components, the first ratchet members with first group of ratchet and the second ratchet members with second group of ratchet, one end of described first ratchet members is fixedly installed on described instrument, described second ratchet members is connected on described instrument, described first group of ratchet and described second group of ratchet match, it is characterized in that, described second ratchet members is provided with the first hole, described first hole comprises the first bore portion and the second bore portion, described Lock Part is located in described first hole,

Described actuated components is connected to apply described Lock Part to activate for the first time with described Lock Part; Described first time activates: make described Lock Part turn to the second place from primary importance in described first bore portion, to make described first ratchet members drive described second ratchet members by described first group of ratchet of engagement and described second group of ratchet, described Lock Part enters described second bore portion from described first bore portion.

2. unload force mechanisms as claimed in claim 1, wherein said actuated components is connected with described Lock Part and activates to apply second time to described Lock Part after activating in described first time, and described second time actuating is: first group of ratchet is separated with described second group of ratchet.

3. unload force mechanisms as claimed in claim 1 or 2, it is the first arc column that wherein said Lock Part comprises cross section, described first column can rotate in described first bore portion, described first column can translation in described second bore portion, has the part of non-smooth connection between described first bore portion and described second bore portion.

4. unload force mechanisms as claimed in claim 3, the part of wherein said non-smooth connection is step, described step is used for when described first column is in described primary importance in described first bore portion, and the bending sidewall sections of described first column of conflicting enters described second bore portion to stop described Lock Part from described first bore portion; Described step is also for when described first column is in the described second place in described first bore portion, and the bending sidewall sections not contacting described first column can enter described second bore portion from described first bore portion to make described Lock Part.

5. unload force mechanisms as claimed in claim 3, the first end of wherein said actuated components is connected to drive described Lock Part with described Lock Part, and described actuated components has the spanner portion extended from its first end.

6. unload force mechanisms as claimed in claim 5, wherein said second ratchet members is provided with stop part, described stop part protrudes from described second ratchet members; Described stop part is arranged on described spanner portion and is fixed on the path of end swing of described instrument to described first ratchet members.

7. unload force mechanisms as claimed in claim 6, wherein also comprise reset components, described reset components comprises the first flexible member, and described first flexible member is arranged on described second bore portion, and described first flexible member is conflicted on the sidewall of described first column.

8. unload force mechanisms as claimed in claim 7, wherein said first flexible member is Compress Spring, conflicts on described first column in an end of described Compress Spring.

9. unload force mechanisms as claimed in claim 7 or 8, wherein said reset components also comprises the second flexible member, and described second flexible member is conflicted on the sidewall of described spanner portion away from described stop part.

10. unload force mechanisms as claimed in claim 9, wherein said second flexible member is torsionspring, conflicts in described spanner portion in an end of described second flexible member.

11. unload force mechanisms as described in claim 1,2,4,5,6,7,8 or 10, and wherein said instrument is folder or pincers.

12. 1 kinds of ratchet wheel clamps, for gripping objects, have and unload force mechanisms as described in claim 1,2,4,5,6,7,8 or 10, wherein said ratchet wheel clamp comprises the first jig arm and the second jig arm, and described first jig arm can be rotated around the first axle being connected described first jig arm and described second jig arm with described second jig arm; One end of described first ratchet members is fixedly installed in described first jig arm, described second ratchet members is connected to described second jig arm by the second axle be arranged in described second jig arm, and described second ratchet members can be rotated relative to described first ratchet members.

13. ratchet wheel clamps as claimed in claim 12, wherein said first group of ratchet and described second group of ratchet are set to described first group of ratchet of engaging and described second group of ratchet allows the move toward one another of described first jig arm and described second jig arm and stop the opposing motion of described first jig arm and described second jig arm.

14. ratchet wheel clamps as claimed in claim 13, the first end of wherein said first ratchet members is fixed in described first jig arm, and the second end of described first ratchet members points to described second jig arm; The first end of described second ratchet members points to described first jig arm, and the second end of described second ratchet members points to described second jig arm; Described second group of ratchet is distributed in described second ratchet members towards on the sidepiece of described first axle from the described first end of described second ratchet members; Described first group of ratchet is distributed on the sidepiece of described first ratchet members away from described first axle.

15. ratchet wheel clamps as described in claim 13 or 14, wherein said actuated components comprises the first wall and the second wall that be arranged in parallel, and described second ratchet members is partly sandwiched between described first wall and described second wall; Described actuated components has pair of holes, and described pair of holes is respectively on described first wall and described second wall, and described Lock Part to be located in described pair of holes and can not to rotate in described pair of holes.

16. ratchet wheel clamps as claimed in claim 15, wherein also comprise attaching parts, and described attaching parts comprise the 3rd wall and the wall be arranged in parallel, are connected with retaining wall between described 3rd wall and described wall; Described second ratchet members is partly sandwiched between described 3rd wall and described wall; Described attaching parts are partly sandwiched between described first wall and described second wall; Described retaining wall is disposed in described actuated components on the path that described second jig arm swings.

17. ratchet wheel clamps as claimed in claim 16, wherein said second ratchet members are provided with the second hole of strip, and described second axle also laterally can move through described second hole in described second hole; Described second hole is closed pore or open pore.

18. ratchet wheel clamps as claimed in claim 17, wherein said attaching parts have the second pair of hole coordinated with described second axle and the 3rd pair of hole coordinated with described Lock Part, described second pair of hole is respectively on described 3rd wall and described wall, and described 3rd pair of hole is respectively on described 3rd wall and described wall; Described second axle is through described second pair of hole, and described Lock Part rotates in described 3rd pair of hole through described 3rd couple of Kong Bingke.

19. ratchet wheel clamps as claimed in claim 18, wherein said second ratchet members has bossing on the surface of described 3rd wall and described wall, and described bossing contacts with described wall with described 3rd wall; Described bossing is strip, extends along the direction of described second ratchet members relative to described attaching parts movement.