CN2463119Y - Wrench - Google Patents

Abstract

The utility model relates to a wrench which comprises a grab handle of which both ends are respectively provided with a fixed jaw. A clamping surface which is fit and suitable for clamping work pieces with various sizes is formed at a wall edge at one side of the fixed jaw. A movable jaw is correspondingly and fixedly pivoted on each of the fixed jaws of the grab handle. In addition, the other end of each movable jaw is provided with a first gripping surface with a corresponding angle and a second gripping surface. One end of each movable jaw is provided with a containing space. The fixed jaws of the wrench of the utility model have different sizes, and the movable jaws which are suitable for various sizes are separated at both sides. When the wrench clamps objects, the gap error is smaller, the wrench is applicable to a smaller construction space, and the wrench is easy to hold, and is simple and easy to manufacture and assemble.

Description

A kind of spanner

The utility model relates to a kind of spanner, especially a kind of monkey wrench that is easy to be suitable for multiple size that assembles.

Hand tools occupies a large amount of market in the conventional industries, no matter it just can occupy market in factor advantages that is all such as quality, practicality and excellent operability, just can seize market, therefore, hand tools the mode of making and process directly and cost and speed of production closely bound up, also be the most important competitiveness of hand tools now.

Have in the wherein known spanner be suitable for multiple size pull pincers continuously, known configurations as shown in Figure 1, it mainly is pivoted with a movable block 12 in shank 10 jaws 11 ends and bites screw 13, though the applicable multiple size screw of this spanner pull function, but its movable block 12 is with three inner edge walls 121,122 envelope the wall of screw 13 fully, thereby can cause whole spanner to pull the space too big, so use the operating space of the public spanner of this kind must be bigger, so that the significantly space of reciprocal swing of spanner to be provided, so this kind spanner promptly can't use in the operating space in less construction place, is its maximum defective.

Other has a kind of known spanner structure as shown in Figure 2, it is mainly one-body molded in the mode of solid forging, strengthen structural strength by this, but in the forging of spanner shank 30, the manufacturing in hole 31 is very difficult, because the processing in shank 30 hollow parts is difficult for, so can be higher on manufacturing cost, wherein have the movable block 32 of jaw 321 in order to be suitable for more kinds of screw sizes, its deflection angle is quite big, it is when operation small size screw relatively, and movable block 32 accounts for too many space, so inapplicable small space, though have suitable dimensions more widely, but when being suitable for the screw operation of reduced size, the head of its movable block 32 promptly causes operational inconvenience too greatly, unidirectional its major defect that is of pulling head in the excessive and suitable operational discomfort of small size screw of operation upper deflecting angle of this kind.

Please consult Fig. 3 again, it is the spanner structure of approximate diagram 2, but this kind known configurations mainly is pivoted with a movable block 21 at the ora terminalis of spanner shank 20 with steel plate structure inside, it is all made in the mode of steel plate riveted 20 of shanks, because forge more difficult cost height, and each production quantity of forging must be quite big, do not meet economic benefit and just change mode with the steel plate riveted, solves the high problem of cost of forging.But the structural strength of globality is strong inadequately, moreover its integral body is with the steel plate structure riveted, and the space of emptying of shank is quite big, so structural also quite fragile in integral body.

Therefore, also there is the people to be improved at the above-mentioned defective that only has the one-way operation head to be produced, become the two-way structure of pulling head that all has, spanner structure as No. the 5771761st, annex one United States Patent (USP), please consult Fig. 1 and Fig. 2 of this annex one earlier, also must utilize plugging of a steady pin 26 by the setting that can find out its spring 25 among the figure, so, being difficult for of cost on directly raising is made and fit on, please consult Fig. 6 of this patent again, its arranged outside spring 25 between shank 156 and movable block 196, this exposed installing spring 25 is deviate from quite easily, so must cooperate the location of a latch 48, though fit on can reach the simple and crude location of spring 25, but but increased manufacturing cost and latch 48 and be assemblied in shank 15 difficulty quite difficult with the outside of movable block 19 with spring 25, moreover Fig. 9 of this known patent is for implementing the spanner structure of bullhead, this spanner structure all is provided with the operation head in two ends, but the movable block 19 of its operation head is fixing with three walls that shank 15 forms, only can pull the hex(agonal)screw of fixed single size, so do not have the function that is suitable for multiple size, and its design that bullhead is set also can only be suitable for the operation of pulling of two kinds of size screws, so on the size applicability, do not have practicality, and can find out that by diagram the two ends movable block 19 and the opening direction of shank 15 are rightabout, so all remain on one between the movable block 19 at two ends and shank 15 less than 90 degree angle extratensive type attitudes, quite be not suitable for providing user's gripping function when handle, for actual operator, when its operation is pulled during the application of force, hand is held on the movable block 19 of the other end quite uncomfortable, and movable block 19 and shank 15 between the barrier point of angled place when more gripping, so the prior art does not quite have practicality when operation.

Please consult the spanner structure of No. the 5746097th, the United States Patent (USP) of annex two again, this structure mainly utilizes a thrust unit 30 rubber-likes to promote a shell fragment 40, the rotation that makes movable block 22 produce deflection indirectly, this design mainly provides the envoy a kind of operational convenience, but it is with the setting of thrust unit 30, at first must offer an elongated slot 24 just makes thrust unit 30 for a ccontaining elastomer 25 upper and lower covers 32 at shank 20,31 rubber-likes promote, this device has promptly lost the easy structure that this kind spanner is emphasized, increase the complexity of member on the contrary, too much indirect linkage part is easy to generate the energy loss in the start, cause uncertain in the structure operation, moreover shell fragment 40 in the location of lower cover 31 only in the storing of a breach 35, and this shell fragment 40 is main interlock media of thrust unit 30, so the loss rate of this shell fragment 40 must be quite quick, also cause fault rate higher for too much linkage part, therefore, its internal structure with spanner designs too complicatedly, the cost on increase is made and the degree of difficulty of fit on, moreover the inner space 23 of its movable block 20 is also for enveloping the structure of screw fully, thereby can cause whole spanner to pull the space too big, so use the operating space of the public spanner of this kind must be bigger, so that the significantly space of reciprocal swing of spanner to be provided, so this kind spanner promptly can't use in the operating space in less construction place, is the major defect of this patent case.

The purpose of this utility model provides a kind of spanner, wherein the fixed jaw at lever two ends is provided with the movable jaw of different size, its movable jaw that will be suitable for multiple size is divided into two limits, make on the movable jaw can clamping the screw size disparity unlikely too big, so movable jaw can not produce excessive deflection in pulling process, be suitable for less construction space and have, straddle type fixing mode pivot is fixed on the fixed jaw beyond the movable jaw in addition, all simpler and easy in manufacturing and fit on, moreover movable jaw is subjected to the diastole of elasticity pushing tow, system makes the outer rim wall of movable jaw present with the wall edge of lever to be close to parallel straight no etat lacunaire, by this when the user grips the fixed jaw of an end wherein with hand, can not produce the sensation of any discomfort fully, for the operator, have quite high practicality, solve fully that known Two-way spanner be difficult for to grip because of difficult point.

For achieving the above object, the utility model is a kind of spanner, it is characterized in that: include a lever, be respectively equipped with fixed jaw at two ends, a sidewall rim of this fixed jaw forms to cooperate and is suitable for the clamping surface that multiple dimension workpiece folder is pulled; Movable jaw, corresponding pivot are fixed on the fixed jaw of lever, and the other end of movable jaw then is provided with first clamping face and second clamping face of a corresponding angle, and the clamping surface of this first clamping face, second clamping face and fixed jaw clamps workpiece; One elastomer is placed between movable jaw and the fixed jaw, and movable jaw is subjected to elastomeric pushing tow diastole, and the outer rim wall of movable jaw presents with the wall edge of lever and is close to parallel straightened condition.

One end of two movable jaws is provided with an accommodation space, and this accommodation space can be installed with elastomer, and the inner wall of accommodation space is towards the interior tank that is concaved with, and this tank ammunition feed gonosome colludes solid.

The openend of two movable jaws all in the same direction.

The one side wall surface system of relative first clamping face of described movable jaw and second clamping face remains on same direction with the upper limb wall of lever.

Elastomer one end is provided with one and fastens.

The utlity model has following characteristics and advantage:

1, spanner of the present utility model, wherein the fixed jaw at lever two ends is provided with the movable jaw of different size, the movable jaw that is suitable for multiple size is divided into two limits, make on the movable jaw can clamping the screw size disparity unlikely too big, the space error that is easy to generate during clamping is less, and the operator pulls Shi Buhui because movable jaw needs significantly deflection too greatly, so movable jaw can not produce excessive deflection in pulling process, shank does not also need to have too big operation pivot angle relatively, and has the less construction space of being suitable for;

2, spanner of the present utility model, wherein movable jaw is that straddle type fixing mode pivot is fixed on the fixed jaw in addition, and is all simpler and easy in manufacturing and fit on;

3, spanner of the present utility model, the elastomer one end that wherein is arranged in the movable jaw accommodation space colludes is located at tank, the other end is the top of pushing tow on the fixed jaw end of pulling then, make movable jaw form the state of elasticity diastole, because this movable jaw is subjected to the diastole of elasticity pushing tow, the outer rim wall of movable jaw is presented with the wall edge of lever be close to parallel straight no etat lacunaire, by this when the person that makes the elbow grips the movable jaw of an end wherein with hand, can not produce the sensation of any discomfort fully, for the operator, have quite high practicality, solve the difficulty that known Two-way spanner is difficult for gripping fully;

4, spanner of the present utility model, employed member is minimum, only must movable jaw and fixed jaw between be articulated, and the inner elastomer of putting can be finished assembling, quite simple and easy at fit on, the solid mode of pivot of adding straddle type beyond the movable jaw make and fit on simple and easy more rapidly, this part quite has the usability on the industry.

Description of drawings is as follows:

Fig. 1 is first kind of known spanner structure plane;

Fig. 2 is second kind of known spanner structure plane;

Fig. 3 is the third known spanner structure three-dimensional system diagram;

Fig. 4 is a spanner three-dimensional system diagram of the present utility model;

Fig. 5 is a spanner three-dimensional combination figure of the present utility model;

Fig. 6 is a spanner vertical view of the present utility model;

Fig. 7 is a spanner right side view of the present utility model;

Fig. 8 is implemented on the schematic diagram of operation by human hand for spanner of the present utility model;

Fig. 9 is the embodiment schematic diagram of spanner clamping screw of the present utility model;

Figure 10 is the comparison state diagram of Fig. 1 and Fig. 9.

Annex one: for the patent gazette shadow of No. the 5771761st, United States Patent (USP) this;

Annex two: for the patent gazette shadow of No. the 5746097th, United States Patent (USP) this.

(the reference number number in the accompanying drawing)

10, shank 11, jaw

12, movable block 13, screw

121,122,123, wall 20, shank

21, movable block 30, shank

31, mesopore 32, movable block

321, jaw 40, lever

41,42, fixed jaw 411, perforation

412, push up pull end 413, clamping surface

50, movable jaw 51, accommodation space

52,53, lug 521,531, pivot hole

511, tank 54, first clamping face

55, second clamping face 56, guide groove

60, elastomer 61, block end

70, rivet 80, movable jaw

90, hand 100, screw

Please consult Fig. 4 and Fig. 5 earlier, the utility model provides a kind of spanner, and it mainly includes:

One lever 40, it mainly is arranged with fixed jaw 41,42 respectively in its two ends, wherein the fixed jaw 41 of an end is size the greater, 42 of the fixed jaws of the other end are the size smaller, vertically run through on this fixed jaw 41 and be provided with a perforation 411, and the end 412 of pulling in the top that a side wall surface of fixed jaw 41 forms an arc-shaped recess, and pull end 412 and form the clamping surface 413 of a small size convex arc shaped in this top of continuing.

One movable jaw 50, its main correspondence is arranged on lever 40 fixed jaws 41, this movable jaw 50 mainly is a hook shape, one end of this movable jaw 50 is provided with the accommodation space 1b1 of a depression, the upper and lower end face of this accommodation space 51 then forms a pair of lug 52,53, this is to lug 52, then be provided with pivot hole 521 on 53,531, wherein the inner wall of accommodation space 51 is towards the interior tank 511 that is concaved with, the other end of movable jaw 50 then is provided with first clamping face 54 and second clamping face 55 of a corresponding angle in addition, a suitable corner that can clamp nut between this first clamping face 54 and second clamping face 55, wherein first clamping face 54 and second clamping face 55 between then be provided with a circular-arc guide groove 56, this guide groove 56 main corners for screws have clamping allows bit space when pulling.

One elastomer 60, it probably is a V-shape, and colludes in an end of this elastomer 60 and to be provided with a block end 61, and these block end 61 ammunition feed gonosomes 60 collude the tank 511 that is fixed in movable jaw 50 accommodation spaces 51.During assembling, movable jaw 50 utilizes its a pair of lug 52,53 stride the outside of being located at fixed jaw 41, and utilize a rivet 70 to penetrate lug 52,53 pivot hole 521,531 and the perforation 411 of fixed jaw 41, by this movable jaw 50 is hubbed on the fixed jaw 41, the block end 61 that wherein is arranged in the elastomer 60 one ends of movable jaw 50 accommodation spaces 51 colludes is located at tank 511, the other end then the top of pushing tow on fixed jaw 41 pull the end 412, in order to do making movable jaw 50 form the state of elasticity diastole, and the movable jaw 80 of the solid reduced size of the also same pivot of the fixed jaw 42 of lever 40 other ends its mainly will be suitable for the movable jaw 50 of multiple size, 80 are divided into two limits, make movable jaw 50, on 80 can clamping the screw size disparity unlikely too big, the space error that is easy to generate during clamping is less, and the operator is when pulling, can be because of movable jaw 50,80 need significantly deflection too greatly.

Please consult Fig. 6, Fig. 7 Fig. 8 in one's power again, because this movable jaw 50 is subjected to the diastole of elastomer 60 pushing tows, the outer rim wall of movable jaw 50 is presented with the wall edge of lever 40 be close to parallel straight no etat lacunaire, at this point when the user grips the movable jaw 80 of an end wherein with hand 90, can not produce the sensation of any discomfort fully, for the operator, have quite high practicality, solve the difficult instrument that known Two-way spanner is difficult for gripping fully.

Please consult Fig. 9 again, it is mainly the state diagram of movable jaw 150 of the present utility model and fixed jaw 41 clamping screws 100, wherein two of screw 100 outer rim walls develop first clamping face 54 and second clamping face 55 at movable jaw 150, guide groove 56 between first clamping face 54 and second clamping face 55 then provides the design of stepping down of these screw 100 corners, fixed jaw 41 then is held on another sidewall rim face of screw 100, reaches the structure of firm clamping screw 100 by this.

Please continue to consult structure shown in Figure 10, it is the Fig. 1 and the comparison shown in Figure 9 of the present utility model of prior art, wherein when known spanner structure is pulled, the deflection that its movable block 12 is produced coats screw 13 fully because of it, so courses of action are quite big, review the utility model, it is pulled the only relative movable jaw 50 in path and coats two screw 100 walls when operation, so movable jaw 50 can not produce excessive deflection in pulling process, handle opposite 40 does not also need to have too big operation pivot angle, and has the less construction space of being suitable for.

Claims (5)

1, a kind of spanner is characterized in that: include a lever, be respectively equipped with fixed jaw at two ends, a sidewall rim of this fixed jaw forms to cooperate and is suitable for the clamping surface that multiple dimension workpiece folder is pulled; Movable jaw, corresponding pivot are fixed on the fixed jaw of lever, and the other end of movable jaw then is provided with first clamping face and second clamping face of a corresponding angle in addition, and the clamping surface of this first clamping face, second clamping face and fixed jaw clamps workpiece;

One elastomer is placed between movable jaw and the fixed jaw, and movable jaw is subjected to elastomeric pushing tow diastole, and the outer rim wall of movable jaw presents with the wall edge of lever and is close to parallel straightened condition.

2, a kind of spanner as claimed in claim 1 is characterized in that: an end of two movable jaws is provided with an accommodation space, and this accommodation space can be installed with elastomer, and the inner wall of accommodation space is towards the interior tank that is concaved with, and this tank ammunition feed gonosome colludes solid.

3, a kind of spanner as claimed in claim 1, it is characterized in that: the openend of two movable jaws all in the same direction.

4, a kind of spanner as claimed in claim 1 is characterized in that: the side wall surface system of relative first clamping face of described movable jaw and second clamping face remains on same direction with the upper limb wall of lever.

5, a kind of spanner as claimed in claim 1 is characterized in that: elastomer one end is provided with one and fastens.

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