CN1103345A

CN1103345A - Adjustable gripping and locking tool

Info

Publication number: CN1103345A
Application number: CN 94109177
Authority: CN
Inventors: T·内夫
Original assignee: Texceed Corp
Current assignee: Texceed Corp
Priority date: 1993-07-07
Filing date: 1994-07-06
Publication date: 1995-06-07
Also published as: CN1100681A; CN1050792C

Abstract

An adjustable clamping and locking instrument contains a bracket (28). An elongated handle (2) and a pivot rotated handle are arranged on the bracket. An adjustable tong (34), which can be slide, is arranged on the bracket, and an adjustable bar (52) is matched with the adjustable tong, which is used for adjusting the bracket close to or separate from the fixed tong (24). The adjustable bar is arranged on the pivot rotated handle, just as the operation of clamping and locking, the operation is done by the hand which holds the instrument. The structure of the instrument probably makes the adjustment of the two tongs directly direct to the work piece, and eliminates the boring and time-wasted operation of rotating the screw backwards and forwards a plurality of times, which makes the effective adjustment of locking the two tongs on the work piece become possible.

Description

Adjustable gripping and locking tool

The present invention puts it briefly and relates to hand-operated tools, especially relates to a kind of the clamping and the pliers of locking or the spanner of clamp class.

The present invention be to being included in some patent is arranged earlier, especially to US2280005(inventor petersen the most outstanding and that succeed, open day is April 14 nineteen forty-two) a kind of improvement of hand-operated tools.The described instrument of US2280005 is referred to as a kind of clamp and has sold more than 50 year, and is not subjected to any great objection for the form of its structure and operation.

Yet this clamp instrument and its various imitation shape pieces have some shortcomings, and have done some and repay examination eliminating these shortcomings, but up to the present, repay in the examination at these, though fruitful also be very little.

The subject matter that will must do before locking is the adjustment of the relative work package of jaw.In order to understand this problem, what must at first understand a bit is that how its jaw is regulated in initial petersen instrument, and described this instrument is still using now.Its governor motion comprises a manual control screw, and this screw turns clockwise and makes jaw open broad, makes the jaw of its unlatching shrink and be rotated counterclockwise.This screw axially extends in an elongated hollow handle, and has one from the outstanding embossing head of handle end, and the other end of screw contacts with an end of a pole, this pole is connected on the pivotable securing rod or is connected on the rotating handle that is referred to herein as for the sake of simplicity at its relative end, and they are connected on the adjustable jaw successively.This adjustable jaw with the fixed handle be pivot rotate near or away from a regular jaw.For instrument being adjusted on the work object, a hand grips it, and at this moment the another hand-screw changes head of screw, thus with a kind of form of similar scissors rotate adjustable jaw near or leave regular jaw.In order to make jaw pin a work package, when two jaws can not drop into when contacting with work package simultaneously, the position of adjustable jaws mouth is very limited, and is in the critical condition of lock operation, but still can lock them.If this contact form, two jaws are too near so that can not start locking, if the adjustable jaws mouth is too far away from work package, then jaw can not pin work package, problem just here, in order to obtain this critical adjustment of pivotable jaw, the screw of being regulated must be regulated for several times before can realizing suitably adjusting usually.When relating to the work package of a different size, this just needs careful adjusting to lock jaw.

Second shortcoming is then must make with the hands for adjustment means so that it can lock a work package (as mentioned above).

The 3rd shortcoming is that both hands also must be used for jaw is loosened from a latched position, and if locking device very fastening, the starting of then loosening become be difficult to the operation.Final when released when it, because sizable power, handle will eject suddenly, and make and might hurt operating personnel.

The 4th shortcoming is that adjustable jaw rotates with an arc and aforesaid " scissors " mode pivot, rather than on a straight line direction, move, therefore, a point is only arranged on each adjusting position, make here jaw in fact with act on a work package on best gripping force parallel, and it also limited length between vices from scope.

Also having other shortcoming is when a kind of vice type instrument is adjusted to this position, the jaw that can regulate be its wideest open a little or near the wideest open a little on the time, fixing handle and pivotally supported handle spacing when the span of a general hand can not reach, then need second hand to help they are flocked together greatly again.

Therefore, the application's some purposes and advantage are as follows:

(1) provides the instrument that a kind of adjustable clamp is tight and lock, wherein jaw can directly be regulated facing to a work package fast and easily, utilizing such adjusting to form a kind of light or heavy clamping can arbitrarily allow operating personnel select, and this adjusting is to finish by the thumb movement of a holding tool hand only;

(2) provide a kind of instrument as described in top (1), it has constant parallel jaw, and described jaw is not done " shearing " regulating operating period;

(3) provide a kind of instrument of regulating locking, wherein regulate, locking and unclamp operation only just can implement with a hand;

(4) provide a kind of instrument of regulating and locking, the span of two handles in clamping is used on the wideest deployed position of its two handle is limited to the normal span of general hand.

Other purpose of the present invention and advantage will become apparent from accompanying drawing and narration with reference to the accompanying drawings, have wherein provided some most preferred embodiments.Should understand that given embodiment only is presented for purposes of illustration with knowing, the present invention not necessarily is defined in these, and can be modified and be used for any purposes that is considered to be fit to.

Fig. 1 is a front view, and it is to look from a side of instrument;

Shown in Fig. 2 is the local fragmentary cross-sectional view of the outer end of elongate handle; It is observed from the bottom side angle;

Fig. 3 is the identical part sectioned view that is illustrated in Fig. 2, and it is looked from the one side;

Fig. 4 is that instrument shown in Figure 1 clockwise rotates a front view of 90 °;

Fig. 5 is a plane of instrument shown in Figure 1;

Fig. 6 is the plane of an adjustable jaws mouth structure that substitutes;

Fig. 7 is the elevation of second kind of alternative adjustable jaws mouth structure.

Now referring to corresponding digital in the accompanying drawing, the present invention is made up of technology contents described below:

Fig. 1 to Fig. 5 shows instrument 20 of the present invention, it has an elongate handle 22, a regular jaw 24 that is connected on the handle 22, a pivotally supported handle 26, a support 28, this support is by pivot pin 30 and 32 pivotable being connected on two handles 22 and 26 (as shown in Figure 4), and an adjustable jaw 34 is slidably mounted on the support 28.Jaw 34 is installed on the support 28 by two

pins

36 and 38, freely slides in the elongated slot 40 of

36 and 38 in support 28.Two

pins

36 and 38 are connected to two sidewalls 42 and 44(44 only can see in Fig. 4).The diameter of pin 38 is slightly littler than the width of groove 40, in order that jaw 34 is that pivot rotates with pin 36, is enough to be separated from sawtooth 68 so that can be lifted at jaw 34 conditioning period sawtooth 66.

Sidewall

42 and 44 is by 3 pins or rivet 46,48 and 50, or be installed on the jaw 34 by brazing, or be installed on the jaw 34 by other suitable manner, this suitable manner is to form bifurcated on its jaw, and has at least one tooth perhaps multiple tooth (as marking with numeral 66).Adjusting rod 52 pivotally is installed on the handle 26 by a pivot pin 54 or on the support 28.That the front end of bar 52 is slotted and form a yoke, their

arm

56 and 58 is with " V " shape angled leaving mutually.

Arm

56 and 58 is on a pin 60, and this pin rear lower from the jaw 34 outwards protrudes.On the other hand, pin 60 can be the part of pin 38.The tail end of bar 52 is moved forward and backward along with the thumb of holding tool hand, make jaw 34 along track 64 towards or leave regular jaw 24 and slide.When closed jaw, towards regular jaw between 24 moving periods,

arm

56 and 58 angle play the function that makes jaw 34 rear ends mention necessary distance, make that the sawtooth 66 on sawtooth 68 is separated from adjustable jaws mouth 34.When jaw 34 same work packages contacted, it receded and makes sawtooth 66 and sawtooth 68 engagements, pushes to be used for locking action with back handle 22 and 26.Utilize adjusting rod 52 to allow adjustable jaws mouth 34 inverted runnings opening jaw, it produces same castering action, makes to allow sawtooth on the adjustable jaws 34 be separated from sawtooth on the opposite track 64 again.One end of a spring 70 is installed on the support 28, and the other end is installed on the handle 22.Pole 72 one ends pivotally are connected on the handle 26 by a pivot pin 74, and its other end is loaded in this spring in the elongate handle 22 near connecing a very end of the spring 76 of rigidity.Spring 70 is keeping needed tension force between pole 72, handle 26 and support 28, make the toggle link effect of pinning jaw on a work package come into force.When handle 22 and 26 is pressed together, fulcrum on the pin 74 must be through between the end 78 and pin 32 formed two pivot point by pole 72, these pin 32 handles 26 pivotally supported being installed on the support 28, thus support 28 is rotated at pin 30 head lamp brush guard pivots.This pivot rotational action makes adjustable jaws mouth 34 move towards regular jaw 24, produces locking action on work package.In this case, spring 76 is by on two in the both sides of handle 22 inside protruding

parts

80 and 82 positions that are fixed in the handle 22, or by any other suitable manner spring 76 is fixed on the position in the handle 22.The function that spring 76 is carried out a kind of uniqueness makes adjustable jaws 34 can complete successfully lock operation in the scope of a non-constant width.For example, in a kind of locking tool, it has a screw as adjusting device, and support is lockable by screw, and this screw does not have resilience.Therefore, when two jaws are put into when contacting with a work package, just the possibility that does not have the pole motion, so the adjustable jaws mouth must just stop less than work package just, the gap of being left is that toggle link (crank) action and the jaw that effectively pins on the work package are needed, because this gap is so restriction, why Here it is is obtaining appropriate clearance must be conditioned several usually with the locking instrument that has the screw adjusting before pinning jaw reason.Yet in the present invention, two jaws 24 and 34(and their alternative part) can be put into a work package and contact, and when

handle

22 and 26 was pressed together, because the compression of spring 76, pole 72 can still be enough to make toggle-action to come into force to operation at a distance.If adjustable jaws mouth 34 is adjusted to and just in time contacts a work package part lightly, a light clamping will be formed; And if the adjustable jaws mouth facing to work package with defeating, the sawtooth on the jaw 34 will move to another teeth groove forward on the sawtooth of track 64, thereby causes more strong and fastening clamping.

The control stick 84 that is used to unclamp jaw 24 and 34 is installed to 26, one springs 88 of pivot turning handle by pin 86 and surrounds pin 86 and apply bias voltage facing to control stick 84 and handle 26, so that control stick 84 is remained on the exercisable position.When the outer end of control stick 84 inwardly when handle 22 draws, the interior section of control stick 84 is pushed pole 72, and opens

handle

22 and 26, so just unclamps

jaw

24 and 34, and makes instrument throw off work package.

The pivot of a retainer walls 90 restriction handles 26 on the support 28 rotates, and handle 22 and 26 remains in each other the normal clamping range.

Fig. 6 has represented the most preferred embodiment of an alternative part of adjustable jaws mouth 34.Shown jaw 34 has a groove incision or that be shaped, and ratchet 94 utilizes screw 96 and is installed in its groove.It should be noted that ratchet 94 has only a single engaging tooth 98 in the present embodiment, but also can use a plurality of teeth.Should also be noted that in the present embodiment, the two side of jaw 34a be not separate be connected by some pins or alternate manner, but with jaw be whole.Because be not formed, jaw manufactured as an individual unit be easier to and economy as the interior engaging tooth or the sawtooth of a jaw part.Therefore, can make a straight otch to form bifurcated by jaw.

Fig. 7 has represented second alternative best jaw profile, and wherein jaw 24a and 34b have straight-

tooth clamping surface

100 and 102.

For operation tool,

handle

22 and 26 is separated maximum, this just makes

jaw

24 and 34 be opened to their maximal clearance, then jaw is placed around work package, and with the mobile in a clockwise direction adjusting rod of the thumb of holding tool hand, this moves and makes adjustable jaws mouth 34 slide to regular jaw 24 to contact its work package up to it, as previously mentioned, in operating personnel's operation, contact gently will produce a very light clamping, and weight will produce a very fastening

clamping.Handle

22 and 26 forces together then, the jaw on the locking work package.

For unclamping jaw, the pinkie of holding tool hand draws release lever 84, and this release lever 84 is opened

handle

22 and 26, and jaw is unclamped from work package.

Claims

1, the hand-operated tools of the tight and locking of a kind of adjustable clamp, it comprises: a pivotable support that is installed on the elongate handle, a pivotally supported handle that is installed on the described support, described two handle cross sections are the U type, regular jaw on described elongate handle, adjustable jaw on described support, one is placed in the pole between described elongate handle and the described pivot turning handle, be used for the adjustable jaws mouth is installed in device on the described support, and be used for described adjustable jaws mouth regulate near and leave the device of described regular jaw.

2, according to the hand-operated tools of claim 1, wherein said being used for comprises the device that described adjustable jaws mouth is installed on the described support: the forked section on described adjustable jaws mouth bottom, described forked section is on described support, the parallel external orbital thereon of an elongated slot on described support, described adjustable jaws mouth is slidably mounted on the described track, and be packed on its support by two pins, two pins are placed in the described groove slidably, and are installed on two sidewalls of described bifurcated.

3, according to the invention of claim 1, wherein said being used for regulated the adjustable jaws mouth near comprising with the device that leaves described regular jaw: an adjusting rod, be used to connect the device of described adjusting rod and described adjustable jaws mouth, and the device that is used for described adjusting rod is installed to described pivot turning handle.

4, according to the hand-operated tools of claim 3, the wherein said device that is used for described adjusting rod is connected to described adjustable jaw comprises: a crotch on described bar one end, two arms of wherein said crotch are separated into " V " shape, described arm is being striden a pin, and described pin freely is placed between two arms of described crotch.

5, according to the invention of claim 3, the wherein said device that is used for described bar is installed to described pivot turning handle comprises: a fixing pin, this pin has a head at the one end, its diameter of described head is bigger slightly than described pin bar, the other end of described pin freely passes the hole on the described bar, and it is installed on the described pivot turning handle there.

6, according to the hand-operated tools of claim 1, one of them helical spring is contained among the described elongate handle, become an axial straight line therewith, end towards the outside of described spring is arranged to lean against on the interior adjutage on the described handle, the contacting with an end of described support and gone up in position by an end of pole is fixing towards an interior end of described spring, the other end of pole is installed on the described pivot turning handle by a pivot pin.

7, in the instrument of and locking tight in a kind of adjustable clamp, it is by following member combination: a support, elongate handle and rotor are installed to the pivot turning handle on the described support, described two handles are V-shaped cross sections, a regular jaw is arranged on described elongate handle, an adjustable jaw is installed on the described support, a pole is fitted between described two handles, be used for described adjustable jaws mouth is installed to device on the described support, and be used for described adjustable jaw towards regular jaw with leave the device that regular jaw moves.

8, according to the hand-operated tools of claim 7, wherein said being used for comprises the device that described adjustable jaw is installed on the described support:

A. on forked section, described forked section rail portion on the described support in described jaw bottom;

B. an elongated slot on described support in fact with a straight line parallel of described track; And

C. two pins are installed on the two side of described forked section, and its arrangement is to pass described elongated slot slidably.

9, according to the invention of claim 7, wherein be used for described adjustable jaws mouth towards regular jaw with leave the device that regular jaw moves and comprise: an adjusting rod, be used for device that described bar is connected with described adjustable jaws mouth, and be used for adjusting rod is installed to device on the described pivot turning handle.

10, according to the invention of claim 9, wherein said being used for comprises described adjusting rod with the device that described adjustable jaws mouth is connected: the crotch on an end of described bar, two arms of described crotch are V-shaped separately, described two arms are on a pin, utilize described pin freely to be placed between described two arms, and be installed on described adjustable jaw.

11, according to the invention of claim 9, wherein be used for the device that adjusting rod is installed on the described pivot turning handle is comprised: a locking pin, this pin has the head other end of an expansion freely to pass described bar at one end, and is installed on the described pivotally supported handle.

12, hand-operated tools according to claim 7, one of them helical spring becomes axial straight line among being contained in described elongate handle therewith, end towards the outside of described spring passes through to keep going up in position to projecting inward arm, the opposite end of described spring is contacted with an end of described pole, and being inserted on the described bar of described spring opposite end one protrudes joint and is fixed and goes up in position, pivot rotates this device therefrom, thereby a lighter clamping on a work package is to obtain by using described adjustable jaw to contact, perhaps by utilizing described adjusting rod to press described work package to what adjustable jaw was exerted oneself, close up two handles then, obtain heavier clamping to start locking machinery.

13, in the instrument of and locking tight in a kind of adjustable clamp, it has an elongate handle, regular jaw on described handle, an adjustable jaw of operating by a pivot turning handle, a pole, and adjustment screw, wherein improvement part comprises: one is used for described adjustable jaws mouth is installed in device on the described instrument, and the device that is used to regulate described adjustable jaws mouth, thereby synthesizing in an instrument, described these two devices only can operate it faster and effectively with a hand.

14, the instrument of claim 13 wherein is used for the device that adjustable jaw is installed on the described instrument is comprised:

A. support that is placed between described elongate handle and the described pivot turning handle, this support pivotally is installed on described two handles;

B. on described adjustable jaws mouth a forked section is arranged, described forked section is on described support;

C. an elongated slot on described support is parallel to a rail portion, and described adjustable jaws mouth is installed on its rail portion;

D. some pins are inserted in the described groove slidably, and are installed on two walls of the described forked section on the described adjustable jaws mouth.

15, according to the instrument of claim 13, the wherein said device that is used to regulate described adjustable jaws mouth comprises:

A. adjusting rod, described adjusting rod is installed on the described pivotally supported handle by a pivot pin;

B. the crotch on an end of described bar, the wherein V-shaped separation of two arms of crotch;

C. pin that is installed on described adjustable jaw, described pin freely is placed between two arms of described crotch, thereby clockwise when mobile when described bar, described adjustable jaws mouth will touch a work package up to it towards described regular jaw motion.