CN1270093A

CN1270093A - Improved automatically regulated pliers

Info

Publication number: CN1270093A
Application number: CN 99105554
Authority: CN
Inventors: 哈恰吐温·萨雷
Original assignee: OLYMPIA INDUSTRIES Inc
Current assignee: OLYMPIA INDUSTRIES Inc
Priority date: 1999-04-12
Filing date: 1999-04-12
Publication date: 2000-10-18
Anticipated expiration: 2019-04-12
Also published as: CN1147380C

Abstract

A kind of improved automatically adjustable pliers composed of the first slender part with a fixed jaw at one end, a slender handle at another end and the first neck between them, the second slender handle whose one end can be rotationally linked to said fixed jaw for rotating between open and close positions, the second slender part with movable jaw at one end and the another end installed to the second slender handle, slender connecting-rod, stop pin in slot on the first neck, and spring between the second handle and the first neck. Said pliers have dual operating rod or compound operating rod mechanism. Its jaws can parallelly clamp workpiece in different sizes. No matter what size of workpiece is, the handles are almost constant at any clamp position.

Description

Improved automatic adjusting hand vice

The present invention relates generally to hand-operated tools, especially relates to improved self-adjustable hand vice.

The hand vice that multiple self-adjustable slip connects have been proposed.This hand vice have many common traits, comprise the clamp that vertically separates an angle with respect to one handle, with on the clamp that is installed in one handle as a rotation post of a bolt or rivet form, and an elongated slot or passage that this rotation post passes on another handle protrude.In this hand vice, the spacing distance between the clamp of holding workpiece is regulated by many different designs, for example along the projection that separates or the tooth of the inside long edge of groove, to be used for meshing selectively rotation post.In the another kind of method that distance adjustment is provided between this hand vice is to provide the arc convex that separates on the interface at contiguous run-on point place.All these instruments have the common purpose that is adjusted to the specific workpiece size that is clamped between the clamp.Usually, the use of these instruments needs bimanualness, and wherein handle is drawn back very widely, along a slip interaction energy of groove clamp is moved to contact with required workpiece to allow rotation post.

In some cases, hand vice are configured with singlehanded and regulate.This hand vice are suitable for closing at slidably on the workpiece according to a manual closure function of handle.Hand vice contact with workpiece according to clamp and automatic locking, to prevent further slip effect and the conversion from a sliding-modes to a rotation mode, are wherein applying manual force can cause increase on workpiece clamping action on the handle continuously.Hand vice like this are disclosed in U.S. Pat 4,651, in 598, and bolt is through the slip effect of passage before engagement one workpiece, after workpiece has been clamped between the clamp, but the movable or functional unit of restriction hand vice makes it only to have the one degree of freedom of linear movement.This restriction has seriously restricted it in order to workpiece that remedies different size and the regulating power that clamp is alignd with handle.

In U.S. Pat 4,662, in 252, automatic clamping hand vice are disclosed, it can automatically regulate the clamping clamp with respect to the distance between the workpiece size that is held.These hand vice utilize one or more hiding springs to finish automatic regulatory function.In this patent design, handle piece is interconnected by a pitman arm that crosses.This pitman arm is the flat components of a rigidity, because the result of the pulling force effect of a spring in the one handle, described pitman arm one first end rests on the retainer usually.The other end of pitman arm is installed in rotation on another handle.Different with the hand vice that many slips connect, wherein they are normally produced in enormous quantities by the impact forging operation, handle and clamp are by the solid metal manufacturing, disclosed hand vice then are that metal parts by punching press constitutes in this patent, in some cases, the metal parts of these punching presses is formed thicker hand vice element by lamination as required.For aforementioned patent, after meshing workpiece, but the functional unit of hand vice is limited to a freedom of motion.

The another kind of hand vice instrument of slidable adjustment automatically is disclosed in U.S. Pat 4,893, in 530, its hand vice can be adjusted to any workpiece automatically according to the closure of handle or be clamped in size by other article in the size range that the amount of opening limited maximum between the instrument clamp.For disclosed instrument in the above-mentioned patent, a stiffness control arm extends to another handle from one handle, and this arm is installed in rotation on the handle and turns and be slidably mounted on another handle.Equally, for above-mentioned patent, but make the ability of clamp and handle almost parallel be subjected to the serious restriction of a linear movement free degree of functional unit behind the engagement workpiece.

Known automatic adjusting hand vice all have many shortcomings.At first, though some known hand vice attempt to regulate at least one clamp, so that clamp almost parallel ground alignment along with changing rotation mode over to from sliding-modes, but known structure can not make self-regulating scope produce parallel clamp clamping face alignment, and only can still can to the workpiece of size among a small circle.For the outer workpiece that goes beyond the scope, clamp surface otherwise replenish not enough otherwise replenish too much, these are different with desiring by the target zone of the workpiece size of clamp clamping according to concrete design.Another shortcoming of the adjusting hand vice of prior art is that handle will be done different opening when the workpiece of clamping different size.For example, for large-scale workpiece, handle opens than the desirable interval of gripping handle is big best by a user hand usually, has prevented that therefore the user from cosily gripping hand vice and the power of maximum is passed to handle.Preferably, handle should always be arranged on the position an of the best, and wherein for the workpiece of all sizes, handle all opens a desirable distance and almost parallel each other.Moreover because known hand vice do not have enough adjustable ranges to adapt to the workpiece of different size, so they can not provide best handle spacing with parallel, and can only for one very among a small circle the workpiece of size still can.

One purpose of all hand vice is can be with enough power holding workpieces, thereby does not slide between the surface of workpiece and clamp.Sometimes the power that this need effect be enriched on the handle of hand vice and clamp.Usually, clamp is big more to the power that workpiece applies, and the possibility that slip takes place is just more little, and is more like this when particularly the clamp clamping face is parallel to each other when in holding workpiece the time.But, the length that the device of normally simple, the single rotating operation bar of the known hand vice regulated, its mechanical advantage that obtains can be by will applying strong handle or arm and the size of clamp compares and by clamp to the application point of the power of workpiece and easily calculate.Regrettably, be not enough to obtain to impose on power required on the workpiece sometimes, even the user is to the power of handle effect maximum by this known mechanical advantage that hand vice provided.As mentioned above, thisly can not apply sufficiently high power for workpiece may to cause sliding between clamp and the workpiece, and even injury user or defective work piece itself.

A purpose of the present invention provides a kind of improved automatic adjusting hand vice, and it can overcome or eliminate the defective of similar known hand vice.

Another object of the present invention provides a kind of improved automatic adjusting hand vice, and it is simple in structure, manufacturing is economical.

A further object of the present invention provides a kind of improved automatic adjusting hand vice of as above being advised, it is convenient to grip and use.

Another purpose of the present invention provides a kind of improved automatic adjusting hand vice of purpose as described above, it has improved ergonomics and has enough automatic adjustable ranges, to impel handle to move to roughly the same parallel position for the workpiece of different size, thereby make the user apply maximum power, and make clamp apply maximum power thus to workpiece to handle.

An also purpose of the present invention provides a kind of improved automatic adjusting hand vice of purpose as described above, and it has enough automatic adjustable ranges, makes the clamp clamping face of hand vice move to the orientation of almost parallel with the workpiece for different size.

A further object of the present invention provides the improved automatic adjusting hand vice that a kind of purpose is as described above advised, the mechanical advantage that provided by this hand vice has been provided for it, with for a given power that applies to handle by the user, increase the power that can apply to a workpiece by clamp significantly.

Further purpose of the present invention provides a kind of improved automatic adjusting hand vice, and it can be formed by stamped metal spare cheaply, and do not lose by corresponding unitary piece of metal the advantage that obtains usually.

For achieving the above object, comprise significantly other purpose that after this will become, according to the present invention proposes a kind of automatic adjusting hand vice, be used for regulating automatically to be suitable for the workpiece of different size, it comprises one first elongate articles, have a fixing clamp at the one end, have one first elongate handle, between described fixedly clamp and described first handle, have one first neck at its other end.Be provided with one second elongate handle, the one end is pivotally connected on the described fixedly clamp, with one open usually or the position of unclamping and a closure or clip position between rotate.Be provided with one second elongate articles, that end that roughly is oppositely arranged at itself and described fixedly clamp has a movable clamp, its other end then is installed on described second elongate handle, with according to the rotation of described second elongate handle and with respect to described fixedly jaw motion, and rotate between the end at described another of described movable clamp and described second elongate articles and to have one second neck.Be provided with an elongated connecting rod, the one end is installed in rotation on described second neck, and the other end according to described second elongate articles with respect to the motion of described first elongate articles and be installed in movably on described first elongate handle.Be provided with the first elongated guide device on described first neck, it is along a direction setting that is roughly parallel to the direction of relative movement between the described clamp before described clamp meshes a workpiece.The second elongated guide device, but the end of a linear movement of the described connecting rod that is used for leading selectively, make it substantial linear ground in described first handle and described second neck at least one first predetermined length of one between initial and extended position, move.Be provided with one the 3rd elongated guide device, the described other end of described second elongate articles that is used for leading selectively moves with one second predetermined length of the ground of substantial linear between initial and extended position along described second handle.Stop device links to each other with described first guider, be used for stopping selectively causing described second neck moving along the continuous substantial linear of described first guider because of described clamp meshes a workpiece, and limit the relative motion of the continuous substantial linear of described clamp, so that described clamp rotates around described stop device.Be provided with biasing device, when when described handle does not apply chucking power, this biasing device is generally used for impelling handle separately, and before described clamp meshes a workpiece, but described biasing device keeps an end of the described linear movement of described connecting rod to be positioned at the described initial position of described second guider usually, and the described other end of described second elongate articles then is positioned at the described initial position of described the 3rd guider.Before meshing a workpiece by described clamp, described movable clamp is configured to substantial linear ground and moves towards described fixedly clamp, the clamping of workpiece between described clamp impels described stop device to change further active force to described handle, so that relatively rotate between the described clamp, and impel described clamp to shift to the orientation of almost parallel, but this mainly is owing to overcome the power of described biasing device and an end and second elongate articles of the described linear movement of described connecting rod replenished linear movement along described each the second and the 3rd guider respectively to described extended position from described initial position.The described second elongated guide device can be included in the one or more grooves on described first handle, described second neck or the described connecting rod.

In conjunction with the drawings can more than you know, understanding and cognition these and other objects, features and characteristic of the present invention from following detailed description, wherein:

Fig. 1 is the perspective view according to improved automatic adjusting hand vice of the present invention, represents that its handle and clamp are in the position of opening fully or unclamping;

Fig. 2 is a side elevation in partial section of hand vice shown in Figure 1, with operate machine parts and the details that lockable mechanism is shown in the expression handle;

Fig. 3 is similar to Fig. 2, but expression handle and clamp are in the position of complete closure, do not have clamping one workpiece between clamp, and the expression lockable mechanism activated or keeps handle and the details of clamp when closing position;

Fig. 4 is similar to Fig. 3, but expression handle and clamp be between Fig. 2 and the position shown in Figure 3 a centre position and between clamp clamping one workpiece is arranged, and further expression separates with clamp to allow handle the locking of the hand vice that can not work or throw off;

Fig. 5 is a side view that is similar to the hand vice of Fig. 2, linearity and Angular Dimension when having defined the operation of relevant hand vice;

Fig. 6 is similar to Fig. 5, but the expression another embodiment of the present invention, wherein elongated connecting rod is installed in rotation on the fixed handle, but can rotate and linear movement at the other end by the groove in the connecting rod;

Fig. 7 is similar to Fig. 6, but expression is an embodiment again, and wherein elongated connecting rod can rotate and linear movement at its two ends, and represents a twist blade spring, normally to impel elongated connecting rod along moving, as shown in Figure 8 with respect to the roughly clockwise direction of fixed handle one;

Fig. 8 is a partial side view, and the expression another kind that untie-sell installs a twist blade spring that rotates arranges, the untie-sell that rotates of wherein elongated connecting rod is installed on the fixed handle;

Fig. 9 is the end-view from spring when the A direction of Fig. 8 is watched and elongated connecting rod, and how the expression spring cooperates with elongated connecting rod and fixed handle;

Before Figure 10 is illustrated in formation, from can be used to construct a side view according to a blank model of the metallic plate cutting of the sort of type of hand vice of the present invention;

Figure 11 is similar to Figure 10, but is illustrated in folding or forms the blank of making the Figure 10 behind first elongate articles that carries fixing clamp, and represents to be used for increasing fixedly the fixedly clamp piece of clamp width or the shape of lamination with dotted outline; With

Figure 12 is a rearview of folding elongate articles shown in Figure 11, and wherein fixedly the clamp piece is represented with dotted outline.

Now specifically with reference to accompanying drawing, wherein be equal to or similarly parts represent with same reference numbers that all and at first with reference to Fig. 1, a preferred embodiment of improved automatic adjusting hand vice is generally by reference marker 10 expressions.

Hand vice 10 comprise one first elongate articles 12, have a fixing clamp 12a at an end of this elongate articles, have a fixing elongate handle 12b at its other end, have a neck 12c between these two ends, and this neck 12c is connected and fixed clamp 12a and handle 12b.Fixing elongate handle 12b preferably is coated with a plastic sheath or handle spare 13, this plastic sheath or handle member 13 are preferably formed by the thermoplastic injection molding, having semi-rigid or limited elastic characteristic and suitable high frictional behavior on the outer surface, grip in the comfortable hand and improve hold with a firm grip curable grip in user's hand of this instrument thereby produce.Can form in the upper end of handle 13 one outwardly directed protruding 13 ', as shown, to prevent that palmistry is for the excessive slip of handle.Handle 13 is also being set up a bigger surf zone with the palmistry contact position, to disperse to act on user power on hand when the extrusion handle.By holding handle 12b fully, also protected user's hand to avoid the injury of sharp edge on the handle, these sharp edges produce when forming handle by stamped sheet metal, and this will describe in conjunction with Figure 10～12.

One second or movable elongated handle 14, it also is provided with a protective sleeve or covers 15, is similar to cover 13; With a projection 15 ', be similar to 13 ', the upper end 14 ' of this handle 14 is connected to fixedly on the clamp 12a, with around a pin 16 in the position of opening usually or unclamp, as illustrated in fig. 1 and 2, and rotate between the clip position (Fig. 4) in the middle of a closing position (Fig. 3) or one.

First handle 12b also will be called " fixing " handle, and second handle 14 also will be called one " movably " handle.Though very clear, two handles are all movable, these expressions will only be used for setting up the reference of relative motion and being convenient to describe these hand vice.

Be provided with one second elongate articles, it is generally by reference marker 18 expressions, has a movable clamp 18a at the one end, this clamp is roughly with respect to fixedly clamp 12a setting, and but its other end 18b is installed on the fixed handle 14, but with according to fixed handle 14 with respect to the fixedly rotation campaign of clamp 12a.Second elongate articles also has one second neck 18c, and it rotates between the end 18b extension with another and be connected these both at movable clamp 18a.

That the end 18b of second elongate articles 18 is installed in the embodiment shown is not only rotatable, but also can be along roughly direction D1 (Fig. 2) linear movement of handle 14.This is to obtain by the transverse bolt 20 that use is installed on the end 18b of second elongate articles 18, this transverse bolt 20 passes and is fitted over relative groove 14 " in (an only visible groove among Fig. 1); wherein groove 14 " be formed in the relative wall of handle 14 models that cut into from a blank of metal plate, and form and to have the cross section of U-shaped roughly, between initial and extended position, roughly to move linearly along direction D1.Shown pin 20 is positioned at the initial position of Fig. 1, and hand vice were in and opened fully or the released position this moment.

Illustrate best as Fig. 2, an elongated slot or passage 12d are arranged on neck 12c.One latch 22 be installed in neck 18c go up and be configured to selectively along groove or passage 12d a direction D2 with respect to neck 12c substantial linear move, this direction is arranged essentially parallel to before clamp meshes a workpiece travel direction between clamp 12a, the 18a.This obtains by fitting in elongated slot or the passage 12d at neck 18c installation latch 22 and with it, and wherein elongated slot or passage 12d have

end

28a, 28b, and it allows lock pin 22 to rotate and linear slide in groove 12d.As shown in Figure 2, a lower surface of groove 12d is provided with a roughly smooth spigot surface 30 (Fig. 2), and its facing surfaces then is provided with a series of arc-shaped notch or breach 32, and they can adopt circular shape.But the concrete shape of this recess or breach 32 is unimportant, but also can adopt other shapes, as long as latch 22 can further slide in passage 12d with such recess engagement and prevention pin 22 when the engagement workpiece.It is also rotatable when the latch 22 that can slide in groove 12d under the specified conditions that will describe is in it is contained in one of recess or breach 32.Latch 22 can be fixed, and does not allow its axis around self rotate at neck 18c, and can not influence the function that is provided by pin conversely.Before clamp clamping one workpiece, latch 22 at first slides to as shown in Figure 3 upper end 28a along smooth surface 30 from lower end 28b shown in Figure 2.But, when a workpiece W is clamped between the clamp (Fig. 4), latch 22 just is pushed in one of recess or breach 32, continues motion to limit movable clamp 18a with respect to fixing clamp 12a, thus limit movable clamp 18a with respect to fixing clamp around pin 22 rotations.When this workpiece W be clamped between the clamp thereby clamp 12a, 18a can not be again when direction D2 shifts near mutually, latch 22 moves along a direction that is approximately perpendicular to smooth spigot surface 30, to be received in when the meshing workpiece position of pin on smooth surface 30 roughly relative that recess or breach 32.The lamination 33 that constitutes

clamp

12a, 18a interfixes by rivet 26.

A key character of the present invention has provided an elongate articles 18 independently, it carries movable clamp 18a, but but its be not with second or fixed handle 14 integrally formed, wherein this elongate articles 18 is used as second action bars, thereby forms composition operation bar hand vice that have a composition operation bar with handle 14.Another key character of the present invention has provided one the 4th distinct elements, an i.e. elongated connecting rod 34, one end 34a (Fig. 2) movably is installed in the second neck 18c, its other end 34b then movably is installed on the first elongate handle 12b, with according to the motion of first elongate handle 12 and with respect to 18 motions of second elongate articles.In the embodiment shown, an end 34b of connecting rod 34 is mounted at one second predetermined length (Fig. 2) of a substantial linear direction along fixed handle 12b and moves between initial and extended position.This is that a elongated slot 38 by predetermined length obtains, and this groove 38 roughly extends along a direction D3, and this direction D3 is parallel to the length direction of handle 12 substantially.The end 34b of connecting rod 34 is installed into can be by being installed on the connecting rod and propping up a transverse bolt 40 that fits over (groove only is shown among Fig. 2) in the elongated slot 38 and do linearity and rotational motion.Before the engagement workpiece, pin 40 is illustrated in upper end or initial position in Fig. 1～3.After workpiece W was clamped between the clamp, the position of pin 40 was represented to shift to an extended position in Fig. 4, and

handle

12b, 14 is pressed together by the directed force F that is applied on the handle.

Be provided with suitable biasing device, with before meshing a workpiece by clamp, when not having chucking power to act on the handle, usually

maintenance clamp

12a, 18a and handle 12b, 14 are in the position of opening usually or unclamping as illustrated in fig. 1 and 2, be in initial position in as shown in Figure 2 the groove 38 with the end 34b of common maintenance connecting rod 34, the end 18b of second elongate articles 18 then is in groove 14 as illustrated in fig. 1 and 2 " initial position.Such biasing device comprises a helical spring 42 of tensioning, and the hole 34d shown in the one end warp is fixed on the extension 34c of a projection or approximate vertical, and the other end then is fixed on the lateral struts 44 that is installed on the handle 12b.And, illustrate best as Fig. 2, protuberance that central authorities to handle 14 extend internally or projection 46 backward the projectioies 48 relative with are set, and this projection 48 is extended to separate the mode of aliging with projection 46 basically from neck 12c, to hold the helical spring 50 of a compression.Adopt first elongate articles 12 as a fixing reference point, but very clear compression spring 50 will impel usually second or fixed handle 14 untie-sell 16 that rotates rotates in the counterclockwise direction, as shown in Figure 2, to separate handle 12b, 14.The rotational pin 20 that separately will cause again of handle is shifted to the upper end initial position, as shown in Figure 2, thereby also impels second elongate articles 18 to move down the lower end 28b that also latch 22 is shifted onto groove 12d thus.Extension spring 42 by pulling extension 34c, impel connecting rod 34 untie-sell 40 that rotates to rotate along a clockwise direction, and will on second elongate articles 18, have a similar effects.

When handle 12b, 14 closures, compression spring 50 is further compressed, and as shown in Figure 3, and extension spring 42 is done rotation counterclockwise owing to connecting rod 34 and further extended.When the directed force F on the handle (Fig. 4) when cancelling,

spring

42,50 will impel clamp and handle to be returned to shown in Figure 2 opening or the released position usually.To notice also that from Fig. 3 before workpiece was clamped between the clamp, when handle and the complete closure of clamp, latch 22 was shifted to the top 28a of groove or passage 12d.

When a workpiece W with clamp 12a, when 18a contacts, latch 22 moves or slides to upper end 28a from the lower end 28b of groove or passage 12d by sliding along smooth spigot surface 30 usually, and workpiece W is enough firm in to prevent that clamp from shifting near each other again.But, but the power that effect increases on handle makes these clamps each other again near at first impelling fixed handle 14 to rotate second elongate articles 18 along the roughly clockwise direction untie-sell 36 that rotates.This can introduce a force component that makes progress on parts 18, this component impels latch 22 to leave smooth spigot surface 30 and shifts to groove or the opposite side of passage 12d.This is illustrated among Fig. 4, and wherein latch 22 crosses groove 12d from smooth surface 30 and moves on to and one of arc-shaped notch or breach 22 position engaged.But, because clamp can not shift near each other again, so latch 22 becomes such run-on point: but second elongate articles 18 rotate according to the closing force of continuation effect on fixed handle 14 around this run-on point, this will trend towards making elongate articles 18 along one roughly clockwise direction rotate around latch 22.

A key character of the present invention has provided groove 14 " and groove 38, this provides the additional linear movement free degree after workpiece W has been clamped between the clamp.Put on the enough strong power that handle is drawn close and can impel pin 20 from groove 14 " in initial position shift to an extended position, as shown in Figure 4.This extended position can be at groove 14 " lower end or centre position, the size that this depends on the size of workpiece W and puts on the power F (Fig. 4) on the handle.

Continue transfer function power by rotational pin 36 to connecting rod 34 by parts 18, will impel connecting rod counterclockwise to rotate along one, this requires pin 40 to move down in groove 38.The end 34b of connecting rod 34 counterclockwise rotates in the groove 38 that links to each other and the linear movement extension spring 42 that further stretched.When applying king-sized power on handle, pin 20 is at groove 14 " in linear movement parts 18 are rotated along a clockwise direction, with oblique or the nonparallel relation that mainly remedies handle.As shown in Figure 4, pin 20 is at groove 14 " in motion also help to make the clamping surface itself of

clamp

12a, 18a to be adjusted into the plane of almost parallel, wherein on clamping surface, be provided with tooth line or sawtooth 12a '.But pin 20 is at groove 14 " in the freedom of linear movement also allow behind clamping one workpiece, but fixed handle continue to rotate along a clockwise direction, thereby allow interval " w " that handle further shifts near a required almost parallel (Fig. 3).Similarly, the clamping surface that the linear movement of pin 40 in guide groove 38 mainly allows clamp is basically no matter the size of workpiece all keeps the relation of almost parallel each other, also help the adjusting of handle simultaneously, locate with an interval " w " that moves on to the workpiece W that is used for a relative broad range size.

According to the preferred embodiment, as shown in Figure 3, but provide with second or fixed handle 14 be locked at a lockable mechanism 24 of complete closing position, although applied biasing force by spring 42 and 50.This lockable mechanism 24 can adopt multiple multi-form, though that be provided with in the embodiment shown in Figure 2 is a hook member 24a, but the lateral wall of this hook member 24a and fixed handle 14 separate, to produce a spatial accommodation 24b.Hook member 24a can upper and lowerly slide, thereby meshes a ratchet (pallet) 26 of the position that is adjacent to handle 14 that is formed on neck 12c selectively.The element 24c of one button or finger control preferably is set, it is coupled to hook member 24a and goes up and be slidably mounted on the handle, thereby when handle arrived closing position, button 24c can be meshed easily by user's thumb, to move hook 24a, as shown in Figure 3.Obvious in this position of engagement of hook 24a and ratchet 26, but fixed handle 14 will remain on closing position, although the active force of spring trends towards opening handle and clamp.But under condition shown in Figure 3, a user can to depress or to leave behind button and hook 24a, throw off with ratchet 26, thereby allow spring that clamp and handle are opened to the position shown in Fig. 1 and 2 easily with thumb engagement button or finger control piece 24c.

With reference to Fig. 5, in the preferred embodiment, fixedly clamp 12a is approximately 110 degree with respect to the angle [alpha] of pedestal 12c ', and wherein pedestal 12c ' extends in a direction that is roughly parallel to the direction D2 that clamp moves relative to each other.But in order to obtain the parallel relation between the clamp when clamping one workpiece, this angle [alpha] is not crucial, and it can be preferably in the scopes of 95 degree～100 degree in the scopes of 90 degree～110 degree.This angle can easily be changed to any other suitable angle that the size with the workpiece that will mesh adapts, simultaneously and groove 14 " and 38 predetermined length adapt because these have set up the scope that can carry out required compensation.

In order under the maximum grip size, to make

clamp

12a, 18a parallel, groove or guide 14 ", 38 preferably allow displacement " X " and " Y " (Fig. 5) for clamping at interval " z " about equally, (Fig. 3) keep constant when hand vice are closed, to make for all clamping size intervals " w ".If the direction of groove is modified in this structure, then they can be made slightly short or slightly long.

An importance of the present invention is that the requirement clamp is at the workpiece almost parallel of its clip position for nearly all desired size.In order to reach this requirement, " X " size constancy is till movable clamp engagement workpiece piece.At this moment, clamp is not parallel fully as yet.But behind clamp engagement workpiece piece, and during one of latch 22 engagement breach 32, elongated connecting rod 34 beginnings are moved downwards groove 38 in, up to clamp reach parallel till.The position of latch 22 in one of recess or breach 32 depended in this motion.When latch 22 during at first recess or groove (being similar to initial position shown in Figure 2), tie point is not mobile.When latch 22 was positioned at last breach or recess 32 (as Fig. 3), pin 40 moved maximum amount.Till the length of groove must be enough to allow should mobile reaching of pin 40 to make clamp parallel.Clamp can be in fact ties up to all positions of clamp and the workpiece W of all sizes is carried out clamping with the pass of almost parallel, only Zui Xiao clip position.But the parallel relation of clamp when complete closing position (Fig. 3) is unimportant, because do not mesh workpiece.It is this situation equally that traditional groove connects in the hand vice (non-automatic adjusting), and wherein the front end of the clamp pedestal that is in contact with one another clamp then separates each other.

But the groove 14 in the fixed handle 14 " position and size preferably so set, to such an extent as to the span of handle " w " (Fig. 3) all will keep roughly the same for the workpiece of all desired size.Though the handle span can not be definitely constant, groove 14 " size and Orientation can make the variation minimum of span.

In order to make pin 20 and groove 14 " the edge between the sliding friction minimum; wherein at pin 20 and groove 14 " the edge between may produce very big frictional force, one roller or the disk 60 that is installed in rotation on the pin 20 preferably is set, its diameter is selected to the rear wall that can make roller contact handle 14, illustrates best as Fig. 2～4.Adopt this mode, when pin 20 along guide groove 14 " when motion, roller 60 makes can act on pin 20 and groove 14 usually " the elongated edge surface between the sliding friction minimum.For guaranteeing correct operation and making roller 60 and rear wall 14w Continuous Contact, groove 14 " be configured to parallel with rear wall 14w; thereby spacing and roller that pin 20 keeps equating with rear wall contact rear wall continuously, and make pin 20 and groove 14 " the edge between the sliding friction minimum or be eliminated.

Though groove 38 is mainly used to keep clamping surface almost parallel when the engagement workpiece of clamp, but the groove 14 on the fixed handle " then be mainly used to allow regulating

handle

12b, 14 parallel and have a required spacing " w ".According to the size of hand vice, clamp makes clamp required rotation parallel to each other make clamp required rotation parallel to each other than clamp during in the fully open position when complete closing position, will determine the position of pin 20 in movable clamp groove.But this configuration will be determined length and direction that groove is provided with again on fixed handle, and wherein will note needs to keep clamping spacing " w " to keep constant for all clip positions.As pointed, size " X " " Y " is the value " w " of a constant so that the variation of spacing " Z " is minimum and keep this spacing about equally.Though the orientation shown in the groove 38 is roughly parallel to the length direction D3 of fixed handle, the concrete orientation of this groove is unimportant, as long as component " Y " is substantially equal to " X ".Though the direction of groove 38 can for some improved result, must be noted that to make groove 14 near the direction D2 of groove 12d " and 38 both directions do not intersect with direction D1, the D3 of handle excessively because this will weaken handle.

The spring that is positioned at fixed handle 12b 42 that applies biasing force to elongated connecting rod 34 has been determined to act on the movable clamp to impel latch 22 lockings to go up required power to one of breach or recess 32.Even a too weak spring will allow the slightest contact force of effect on movable clamp teeth, also can make lock pin 22 leave smooth spigot surface 30 and be engaged in one of breach or recess 32.If also always this thing happens when acting on the slightest power, this will be unpractical.Therefore, must increase the tensioning degree of spring 42, thus only when clamp engagement workpiece piece, latch 22 just with guide channel or guide groove 12d in breach or one of recess mesh.

Though it is acceptable as one " roller bolt " upward that pin 40 is retained in fixed handle 12b, but the pin 20 on the fixed handle 14 should be a solid hard pin, because effect has great power on this pin.Except to each parts, comprise that the clamp district heat-treats, breach or recess 32 also need very hard, to stand to be delivered to the king-sized power on it.

Untie-sell 36 is installed rotationally though the end 34a of elongated connecting rod 34 only can rotate, and the other end 34b of connecting rod 34 ' is not only rotatable but also install slidably along the guide groove 38 ' with length " s ".In Fig. 6, provide the one second linear movement free degree at unusual end 34a near the elongated connecting rod of neck 18c.In this case, the end 34b of connecting rod is installed on the fixed handle 12b, and is only rotatable.Owing in Fig. 7, used a straight connecting rod, then can adopt one to reverse or leaf spring 64, as shown in Figure 8, the spiral part of its medi-spring is wrapped on the pillar P, and the arm 64a of its extension and 64b then distinguish a pillar 66 and the connecting rod 34 on the engages fixed handle 12b.This configuration in since spring 64 be in reverse under, a clockwise biasing force Fl will affact on the connecting rod 34, as the original adoption example shown in Fig. 1～4.

Fig. 7 is another embodiment, wherein guide groove in neck 12c or the passage 12d, uses three guide grooves.Guide groove 14 " described identical in conjunction with Fig. 1～4 with 38 with the front, and additional guide groove 68 is corresponding to additional guide groove 38 ' shown in Figure 6.This embodiment shown in Figure 7 has three independently linear movement frees degree on effect, it provides additional multifunctionality aspect adjustment means, the selection of spring size may more play a decisive role and opereating specification more is restricted although compare with mode shown in Fig. 1～4.

Represented to reverse in Fig. 8 or the another kind of arrangement of leaf spring 64, wherein upper supporting leg 64a is resisted against on the antetheca W3 of handle, and the second supporting leg 64b then is engaged on the connecting rod 34.As previously mentioned, the power that applies impels connecting rod to rotate along clockwise direction, need not a special pillar 66 simultaneously.A schematic diagram has been represented the details of Fig. 8 structure when direction A watches in Fig. 9, has wherein removed the antetheca or the end wall W3 of handle.

With reference to Figure 10～12, represented a monolithic blank 70, it forms by metallic plate of punching press, and wherein this metallic plate forms its net shape by crooked blank, shown in Figure 11 and 12.In this way, can cancel some assembly works and can make employed number of spare parts minimum.Blank 70 is provided with bending or fold line 72, and when blank was formed first elongate articles 12 of U-shaped cross-section roughly, this bending or fold line 72 were determined sidewall W1, W2 and end wall W3.Step lower surface 74 allows sidewall W1, W2 to keep separating each other, and the formation clamp of blank and the part of neck are contacted with each other, and illustrates best as Figure 12.By shown in each side of blank of bending use an additional clamp piece or a lamination 76, the thickness of

clamp

12a, 18a can increase and make clamp to strengthen.Be provided with hole 78, to support lamination by use rivet 26.Hole 80 is used to hold rotational pin 16.This structure is provided a smooth clamp area also for first elongate articles 12 and obtains the required projection backward 48 of clamp springs 50.The end wall of handle or closed rear wall W3 also are used as a bearing-surface of the leaf spring of bias voltage connecting rod/action bars.

Though main component is expressed as by blank and forms, promptly by crooked or fold and produce final handle, what the handle of hand vice and other elements can be by punching presses, smooth, the lamination of suitable shape constitutes and is coupled together by riveted joint.Bending or folding step have obviously been avoided in this design.

Have important advantage and feature according to hand vice of the present invention.At first, clamp is with real parallel mode clamping part or workpiece.The hand vice that on market, do not have at present this specific character as yet.And the size of tube components is not how, and handle all keeps constant at any clip position.This makes user's chucking power optimum, and spacing will provide the clamping size of the most comfortable to common user.The chucking power of hand vice is bigger than the chucking power of any other hand vice on the market, and this is because it has a pair of action bars or composition operation linkage, and the hand vice in the past have only single action bars.Adopt described preferred embodiment, the clamping capacity of hand vice when parallel jaw positions is for 7-1/2 " minimum of type should be 0.75 inch, and for 9-3/4 " the model minimum should be 1-1/4 ".If necessary, these values can be elected different values as.

Though described the present invention according to certain embodiments, many other variations, modification and other application all will be conspicuous for the person of ordinary skill of the art.For example, groove or

guide channel

12d, 14 " and 38 be not straight, and can be in a direction (for example R1 among Fig. 2) or other direction (for example R2 among Fig. 2) bending, so that different operating characteristics to be provided.Therefore, should point out that the present invention is not limited by concrete disclosed embodiment, and only limit by the scope of claims.

Claims

1. regulate hand vice automatically for one kind, be used for regulating to be suitable for the workpiece of different size automatically, comprising:

One first elongate articles has a fixing clamp at the one end, has one first elongate handle at its other end, has one first neck between described fixedly clamp and described first handle;

One second elongate handle, one end are pivotally connected on the described fixedly clamp, with one open usually or the position of unclamping and a closure or clip position between rotate;

One second elongate articles, that end that roughly is oppositely arranged at itself and described fixedly clamp has a movable clamp, its other end then is installed on described second elongate handle, with according to of the rotation campaign of described second elongate handle, and rotate between the end at described another of described movable clamp and described second elongate articles and to have one second neck with respect to described fixedly clamp;

One elongated connecting rod, one end are installed on described second neck movably, and the other end is installed on described first elongate handle movably, with according to the motion campaign of described second elongate articles with respect to described first elongate articles;

The first elongated guide device on described first neck, it is along a direction setting that is roughly parallel to the direction of relative movement between the described clamp before described clamp meshes a workpiece;

The second elongated guide device, but the end of a linear movement of the described connecting rod that is used for leading selectively, make it substantial linear ground in described first handle and described second neck at least one first predetermined length of one between initial and extended position, move;

The 3rd elongated guide device, the described other end of described second elongate articles that is used for leading selectively moves with one second predetermined length of the ground of substantial linear between initial and extended position along described second handle;

The stop device that links to each other with described first guider, be used for stopping selectively causing described second neck moving along the continuous substantial linear of described first guider because of described clamp meshes a workpiece, and limit the relative motion of the continuous substantial linear of described clamp, so that described clamp rotates around described stop device; With

Biasing device, when when described handle does not apply chucking power, this biasing device is generally used for impelling handle separately, and before described clamp meshes a workpiece, but described biasing device keeps an end of the described linear movement of described connecting rod to be positioned at the described initial position of described second guider usually, the described other end of described second elongate articles then is positioned at the described initial position of described the 3rd guider, before meshing a workpiece by described clamp, described movable clamp is configured to substantial linear ground and moves towards described fixedly clamp, the clamping of workpiece between described clamp impels described stop device to change further active force to described handle, so that relatively rotate between the described clamp, and impel described clamp to shift to the orientation of almost parallel, but this mainly is owing to overcome the power of described biasing device and an end and second elongate articles of the described linear movement of described connecting rod replenished linear movement along described each the second and the 3rd guider respectively to described extended position from described initial position.

2. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that a described end of described elongated connecting rod is pivotally connected on described second neck.

3. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that described biasing device comprises first biasing device, and it is mainly used in and impels described handle to separate usually; With second biasing device, it is mainly used in and impels the described other end of described connecting rod to be positioned at described initial position.

4. as claimed in claim 3 one regulates hand vice automatically, it is characterized in that described elongated connecting rod comprises that one is the operating rod lever of angle, it has first and second parts that are used to limit direction of being arranged to a predetermined angular each other, described first extends between described second neck and described first elongate handle, and described second portion has a free end that is connected on described second biasing device.

5. as claimed in claim 3 one regulates hand vice automatically, it is characterized in that described second handle has one first connector that is suitable for connecting a helical spring one end, and described first neck has one second connector that is suitable for connecting a helical spring one end, described first and second connectors roughly toward each other, described first biasing device is included between described first and second connector a helical spring that extends and connected by their.

6. as claimed in claim 5 one regulates hand vice automatically, it is characterized in that described helical spring comprises a compression spring.

7. as claimed in claim 4 one regulates hand vice automatically, it is characterized in that described second biasing device comprises a spring, and an end of this spring is fixedly connected on the described first handle, and the other end then is connected on the described second portion.

8. as claimed in claim 7 one regulates hand vice automatically, it is characterized in that described spring comprises an extension spring.

9. as claimed in claim 4 one regulates hand vice automatically, it is characterized in that described predetermined angle is approximately 90 degree.

10. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that the described first elongated guide device comprises an elongated slot, and described locking system comprises a lock pin, and this lock pin extends through described elongated slot and has the end that is installed on described first neck.

11. as claimed in claim 10 one regulates hand vice automatically, it is characterized in that described elongated slot is formed by two elongated apparent surfaces, one of them elongate surface more is close to described second handle and roughly smooth, another elongate surface is then further from described second handle and be provided with the projection of predetermined quantity, described lock pin is exerted pressure by described biasing device usually, with before described clamp meshes a workpiece when described handle is shifted to described closure or clip position, ride and come on the described smooth surface, and when meshing a workpiece when the continuous closure of described handle and by described clamp, described lock pin is pressed towards on one of described projection usually, preventing the further linear movement of described lock pin, and with being further closed of described handle be converted to described movable clamp roughly at the raised position place of engagement around the rotation of described lock pin.

12. as claimed in claim 10 one regulates hand vice automatically, it is characterized in that described another elongate surface is formed many arc-shaped notch that separate, the size of each recess is suitable for holding described lock pin.

13. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that the described second elongated guide device comprises an elongated slot that is formed in the described first handle, be installed on the described elongated connecting rod and fitted over the pin in the described groove, between described initial and extended position, to move.

14. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that described the 3rd elongated guide device comprises an elongated slot that is formed in the described second handle, be installed on described second elongate articles and fitted over the pin in the described groove, between described initial and extended position, to move.

15. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that described first predetermined length to allow the described other end of described elongated connecting rod to mesh a workpiece and motion sufficiently along with described clamp, to remedy the size of workpiece basically by rotating described second neck, thereby move described movable clamp, described fixedly clamp makes it to align substantially parallelly.

16. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that described second predetermined length to allow the described other end of described second elongate articles to mesh a workpiece and motion sufficiently along with described clamp, with by allowing described second handle along with the size that remedies workpiece is basically rotated in workpiece engagement continuously, thereby move described second handle, make it the described first handle that aligns substantially parallelly.

17. as claimed in claim 1 one regulates hand vice automatically, it is characterized in that also comprising locking system, is used to overcome the effect of described biasing device, selectively described handle is locked at described closure or clip position.

18. as claimed in claim 17 one regulates hand vice automatically, it is characterized in that described locking system comprises a pallet that is positioned on the described fixedly clamp and a hook that is slidably mounted on the described second handle, mesh described pallet selectively with closure or clip position at described second handle, and also throw off described pallet selectively in described closure or clip position, to discharge described second handle, make it to move to described opening or the released position.

19. as claimed in claim 18 one regulates hand vice automatically, it is characterized in that described first handle is usually by user's finger grip, and described second handle is meshed by user's thumb usually at least in part, and comprise the button of a thumb-actuated, this button is connected on the described hook member, with with its slip and be configured to and reach easily by thumb, when described handle is maintained at described closure or clip position, to be convenient to engagement and to throw off described locking system.

20. as claimed in claim 1 one automatically regulates hand vice, the parts or the element that it is characterized in that constituting hand vice are by the sheet metal sections manufacturing.

21. regulate hand vice automatically for one kind, be used for regulating to be suitable for the workpiece of different size automatically, comprising:

The first elongated guide device on described first neck, before described clamp meshed a workpiece, it was along a direction setting that is roughly parallel to the direction of relative movement between the described clamp;

The control guider, be used for selectively moving between initial and extended position at least one end of described elongated connecting rod and the described other end of described second elongate articles, wherein this other end substantial linear ground is with respect to one that links to each other in described first handle and described second elongate articles or both;

Biasing device, when when described handle does not apply chucking power, this biasing device is generally used for impelling handle separately, and before described clamp meshes a workpiece, but described biasing device keeps an end of the described linear movement of described connecting rod to be positioned at the described initial position of described second guider usually, the described other end of described second elongate articles then is positioned at the described initial position of described the 3rd guider, before meshing a workpiece by described clamp, described movable clamp is configured to substantial linear ground and moves towards described fixedly clamp, the clamping of workpiece between described clamp impels described stop device to change further active force to described handle, so that relatively rotate between the described clamp, and impel described clamp to shift to the orientation of almost parallel, this mainly is owing to overcome the power of described biasing device and the other end and second elongate articles of described connecting rod replenished linear movement along the described second and the 3rd guider to described extended position from described initial position, thereby described first and second elongate articles and described second elongate handle provide the mechanical advantage of a composition operation bar, and enough regulating powers that described control guider provides the described other end of described elongated connecting rod and described second elongate articles to make the linear movement that each described clamp moves, and described elongate handle can locate substantially parallelly and basically and between the described clamp size of the workpiece of clamping irrelevant.