CN102294669A

CN102294669A - Rapid open-end wrench capable of matching screw element

Info

Publication number: CN102294669A
Application number: CN2010102098627A
Authority: CN
Inventors: 刘文斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2011-12-28

Abstract

The invention discloses a rapid open-end wrench capable of matching a screw element. A rapid open-end wrench body is provided with a grip jaw which can be joined together with a working substance; and a slide block capable of sliding along an arc line is arranged in the grip jaw. In the jaw entering process of the working substance, the working substance can be pushed against the second end of the slide block, so that the positioning surface of the slide block is in surface contact with a third positive stress surface of the working substance, and the first end of the slide block is automatically butted on the fourth positive stress surface of the working substance; and when the grip jaw is used for wrenching the working substance and is elastically deformed, the first end of the slide block can be butted on the fourth positive stress surface of the working substance in a first space during elastic expansion of the grip jaw, and the slide block is used for driving the working substance to rotate; and in the first space, the butt end of the slide block is not contacted with a guide post, so that the guide post is prevented from being deformed by twisting and damaged.

Description

The fast opening spanner of spiral shell spare can coincide

Technical field

The present invention relates to a kind of spanner structure, refer to especially slide block can be automatically against working substance and can bear the fast opening spanner of the coincide spiral shell part of high torsion switching.

Background technology

See also U.S. Patent number the 1st, 320, No. 668 " Wrench; Shifting-Spanner; Pipe-TongsAnd The Like " patent cases, it is a kind of multiduty spanner (wrench), and spanner has a fixed claw (stationary jaw) and a movable claw (movable jaw), and movable claw can be gone up toward polyslip in guide rail (guide) by the pushing tow of a spring (spring).When the user desired the switching nut, rotating spanner can allow fixed claw and movable claw drive the nut rotation.When user's desire moved to next switching position with spanner, rotating spanner in the opposite direction can allow movable claw retreat and compresses spring and can not drive the nut rotation.The repeatable operation aforementioned activities can reach locking or loosen the effect of nut.

But movable claw only relies on the jacking force of spring and contacts on guide rail, thus the problem that movable claw is easy to shake, and easily drop the problem that ground causes movable claw to de-orbit because of collision or spanner.After movable claw de-orbited, spring also was easy to and then break away from and drops, and is bad design again.

Moreover, one end of spring is fixed in the hole of spanner fixed claw, the other end of spring is exposed outside, so make bending when spring is exposed to an outer end easily because of extruding, cause compression process to have some setbacks and locate friction with the aperture of fixed claw, severe patient then can cause the permanent deformation of spring and damage and can't use.And exposed spring is easy to adhere to many dirt bits because of being infected with greasy dirt, not only can influence the compression effectiveness of spring, the easier obstruction that causes movable claw to move of dirt bits.

The someone designs as U.S. Patent number the 3rd, 695 afterwards, No. 125 " Open End Ratchet Wrench " patent cases, and it is a kind of open type ratchet wrench.Spanner (wrench) has a fixed claw (fixed jaw) and a support sector (support portion), establish a spring (spring) and a rest shoe (pawl) in the support sector, two independently cover plate (caps) then be fixed on spanner support sector both sides to hold spring and rest shoe, rest shoe relies on the pushing tow of spring and can move back and forth in support sector.Its design is contained in spring between two cover plates and outside not being exposed to, and rest shoe has a block shoulder (stop shoulder) and can keep off in cover plate, can prevent that rest shoe from being ejected outside the support sector by spring.

But two cover plates are disconnectable separate type designs, drop ground because of collision or spanner easily cover plate is separated, and cause rest shoe to break away from the problem of support sector.After rest shoe broke away from support sector, spring also was easy to and then break away from and drops, and is bad design again.And rest shoe only relies on the jacking force of spring and contact in support sector, so rest shoe still is easy to the problem that shakes.

Moreover, one end of spring only is connected to the fixed claw inner surface, the other end of spring is connected to rest shoe, spring itself is not subjected to the coating in full week, be easy to make spring depart from original position, finally cause rest shoe to be lost reciprocating effect by the normal pushing tow of spring because of collision or repeatedly compression.And rest shoe will produce the space between cover plate and the rest shoe when being pushed in the support sector, allows greasy dirt enter easily and is infected with the dirt bits, influences the compression effectiveness of spring or causing rest shoe to move has some setbacks.

And for example U.S. Patent number the 4th, 706, No. 528 " Adjustable Wrench " patent cases, and it is a kind of adjustable movable spanner.This kind spanner has a fixed claw (fixed jaw) and adjusts pawl (adjustablejaw) with one, on fixed claw, be provided with a slippage pawl (sliding jaw) and a pin (pin), the slippage pawl is provided with a groove (slot) supply and marketing and passes, and so can make the slippage pawl can not break away from fixed claw.The fixed claw inner surface is provided with the outer surface of one first spring (plate spring) pushing tow at the slippage pawl, make the slippage pawl have the power that outwards moves, then offer a hole (hole) in the groove of slippage pawl in addition, to hold one second spring (coil spring), second spring makes the slippage pawl have the power that moves inward, the slippage pawl can move inward or outwards mobile effect and remain on the centre position and have by the pushing tow of first spring and the second spring twocouese.

Because this spanner is the switching operation that is exclusively used in the pipe class object, so work that it can't be useful in locking or loosen the nut object, because the pipe class object does not have the plane can supply the application of force, so its design is to utilize the slippage pawl outwards to move, and shortening slipping block and the distance of adjusting pawl, reach and clamp the effect of pipe class object to reach locking or to loosen, and the slippage pawl that outwards moves is to reset by the inside pushing tow of second spring, only nut itself has had the plane, so the slippage pawl can't outwards move the plane of binding nut when pulling spanner, therefore second spring performs practically no function as can be known.

And discuss during with regard to the spanner backward rotation, the pipe class object can allow the slippage pawl move inward, so just can not drive the rotation of pipe class object during the spanner backward rotation.Situation at the nut object, when the spanner backward rotation, nut also can allow the slippage pawl move inward, but when the slippage pawl moves inwardly into the bosom, slippage pawl and the spacing of adjusting pawl are still less than the spacing at angle, nut two ends, cause spanner can't reach backward rotation and do not drive the effect that nut rotates, can drive nut simultaneously on the contrary and follow backward rotation.Reason is that the groove of slippage pawl is to be made as linearity, and the slippage pawl is moved linearly, and the direction that moves of slippage pawl straight line is very little with the plane included angle of adjusting pawl again, so the clamping and reciprocal switching effect of pipe class object only can be provided, can't be used in the nut object.

Moreover, fixed claw must be offered hole in addition in inner surface could fix first spring with primary screw of screw lock (small screw), the slippage pawl also must be offered a hole in addition to hold second spring in groove, such design all causes spanner can't bear high torsion, just therefore, this kind spanner can only be applied in the pipe class object, because of the pipe class object is a hollow design, its reaction force that is produced when being pulled very little (otherwise hollow pipe is easy to modification) just need not high torsion so the spanner design is original.

In addition, its second spring, one end is contained in the hole of slippage pawl, and the other end then stretches out the hole, the bending when so making a end that spring stretches out the hole easily because of extruding, and causing compression process to have some setbacks with the friction of place, aperture, severe patient then can cause the permanent deformation of spring and damage and can't use.

Moreover, the groove (slot) in the fixed claw is that inside and outside standard-sized sheet is put shape, so the exhausted major part of the reaction force that the slippage pawl produces when pulling article all passes to pin, so pin is easy to damage.Though particularly the slippage pawl have can with the plane of the relative slippage of fixed claw, when pulling, the plane but provides the guiding basis that the slippage pawl moves (or moving) outwardly inwardly, so torsion also can't effectively be born in the plane, can bear because of relative slippage passes to pin with reaction force on the contrary, be not good design.

The 7th, 024, No. 971 " Open End Ratchet Wrench " patent cases of the U.S. Patent number that please see, it is a kind of open type ratchet wrench.This spanner has a pair of fixed claw (stationary jaws), in one of them fixed claw, offer the space (space) that an inside and outside standard-sized sheet is put, be provided with a movable plate (movableplate) in the space, offer two grooves (slot) on the movable plate, fixed claw is provided with two grooves that two pins (pin) pass space and movable plate then, makes movable plate can not break away from the space.Spanner also is provided with a hole (hole) to hold a spring (spring) in the space, spring one end is located in the hole, and the other end then stretches out outside the hole with the pushing tow movable plate.Two set on movable plate grooves are made of a short lines section (short section) and a long straightway (longsection) respectively, short lines Duan Yuchang straightway has an angle, makes movable plate can make two stage straight line when moving back and forth and moves.

Though can making two stage straight line, moves by this spanner, spacing between movable plate and the fixed claw is increased, but the problem that the integrated circuit board that is easy on actual the use to be moved is lived, particularly in the junction of short lines Duan Yuchang straightway, the smooth degree when influencing spanner and being used in backward rotation.

And an end of spring is located in the hole, the other end then stretches out outside the hole, bending when so making a end that spring stretches out the hole easily because of extruding, and cause compression process to have some setbacks with the friction of place, aperture, severe patient then can cause the permanent deformation of spring and damage and can't use.What is more, because of movable plate has two stage straight line amount of movement, so the easier spring that causes produces the problem that overflexing damages.

Moreover, because the design of traditional single straight-line groove causes the spacing variable quantity between movable plate and the fixed claw very little, so must be provided with two stage straight-line groove the spacing variable quantity is increased, but will cause the area of movable plate to strengthen like this, or allow the area of fixed claw increase, can't reach and dwindle taking up room of open-end wrench, spanner just can't stretch into the operation of back and forth pulling in the small space certainly.If only the movable plate area is strengthened, and painstakingly fixed claw is dwindled, will the outer disappearance that long straightway or short lines section are exposed to fixed claw take place as the design of spanner herewith, be easy to allow dirt bits G-card like this in the groove of movable plate, the obstruction in the time of will forming the slippage of movable plate straight line at last.

In addition, because the space is that inside and outside standard-sized sheet is put shape, so the reaction force that movable plate is born when the switching nut passes to two pins all, and the torsion that pin is born can't be too high, so be easy to damage, make this kind spanner can't be used in the switching operation of high torsion.

With reference to No. 2009/0193941 " Ratchet Wrench " patent case of U.S. Patent Publication No., it is a kind of ratchet-driven adjustable spanner.This kind spanner has one first pawl (first jaw) and one second pawl (secondjaw), first pawl and second pawl all are located in the pawl support portion (jaw support), and first pawl can lean on a screw rod (worm) to drive, be provided with an inside and outside standard-sized sheet in the pawl support portion and put the track (track) of shape, second pawl then is located in the track.The pawl support portion is provided with the pin (pin) of a penetrating orbit, and second pawl offers a linear opening groove (opening), and pin can pass the opening groove of the pawl support portion and second pawl, makes second pawl can not break away from the pawl support portion.Be provided with a spring assembly (biasing member) in the opening groove of second pawl, spring assembly can pushing tow second pawl and second pawl is moved outwardly.

Because second pawl of this kind spanner is also only established an independent linear opening groove, so when second pawl moved, it was quite little with spacing variable quantity between first pawl, actual enforcement drives the disappearance that nut reverses still the spanner backward rotation can take place the time with using.Therefore, it must be designed to movable structure with first pawl, and can adjust displacement interval via screw rod, could reach not the effect of counter-rotating simultaneously to nut.Only so, then the part of whole spanner is too much, and structure was offered the problem that multiple hole also causes wrench body intensity to descend.

Moreover because of its track is that inside and outside standard-sized sheet is put shape, so the exhausted major part of the reaction force that second pawl is born when the switching nut all passes to pin, so pin is easy to damage.Though particularly second pawl have can with the plane (surfaces) of the relative slippage in pawl support portion, when pulling, the plane but provides the guiding basis that the slippage pawl moves outwardly, so torsion also can't effectively be born in the plane, can bear because of relative slippage passes to pin with reaction force on the contrary, be not good design.

In addition, because second pawl is the design that straight line moves, so that to be able to increase the spacing variable quantity between second pawl and first pawl, so just must be the lengthening of the opening groove in second pawl, just can reach its effect.But so design, then can make second pawl by nut extrapolated after, make the opening groove of second pawl be exposed to outside the pawl support portion, so just cause opening groove and interior elastic parts thereof to be easy to be infected with greasy dirt, but also can stick the dirt bits, and influence the compression effectiveness of elastic parts, cause the slippage action of second pawl to have some setbacks, the problem that this must solve for spanner, otherwise just form the back and forth conventional spanner of switching.

Comprise aforesaid patent case, also have No. the 4th, 158,975, U.S. Patent number, the 2008/0066585th, 2010/0071516, No. 2010/0083797 patent of U.S. Patent Publication No., whole patent cases all has a common problem.This problem is exactly that the torsion that spanner bore of opening form is limited.Reason is that the problem of elastic dilatation can take place in the excessive situation of torsion the spanner of opening form.

For example, when the torsion when the user finds switching was not enough, the sleeve that can be in one's hands connect the metal tube of a lengthening, and the arm of force when so increasing switching is in the hope of carrying out the switching operation of big torsion.

But, when spiral shell spare is locked against certain degree, its reaction force can be greater than the elastic deformability of the spanner of opening form, therefore, can pull mouthful elastic dilatation and become big problem, this situation can cause pulling mouth and can't effectively be connected in spiral shell spare, allow movable rest shoe break away from the working face of spiral shell spare, the most incidental shortcoming is exactly to cause the place, end angle of spiral shell spare to be worn then, switching action is skidded and switching work can't be proceeded again, can't carry out the switching operation of big torsion on the one hand, then be the damage that causes spiral shell spare on the other hand.

The problem that also has in addition is exactly that mobilizable rest shoe majority only has single face to be resisted against on one of them stress surface of spiral shell spare in the aforementioned patent case, so causes open-end wrench to pull spiral shell spare instability and the easy impaired problem of rest shoe easily.

Main cause is, when open-end wrench is connected spiral shell spare, a side of spiral shell spare is pulled in mobilizable rest shoe position in the open-end wrench application of force, but mobilizable rest shoe only with single against spiral shell spare, that is to say that a side of spiral shell spare only is subjected to the restriction of single direction, so when open-end wrench switching spiral shell spare, have to slide relatively possible between open-end wrench and spiral shell spare, cause the process instability of switching spiral shell spare, and can't effectively promote torsion.

Moreover, also because a side of spiral shell spare only is subjected to the restriction of single direction, and the process instability of switching spiral shell spare so rest shoe and spiral shell spare can relative slips easy generation rest shoe or spiral shell spare wear problems, and then is easily skidded the switching moving part and can't be proceeded switching work again.

And mobilizable rest shoe is after being connected spiral shell spare in the aforementioned patent case, and the plane that often produces rest shoe only single-point is contacted with the situation at the place, end angle of spiral shell spare, in case carry out the switching operation, will cause directly the wear and tear problem at spiral shell spare end angle of rest shoe,, urgently await the necessity that improves for the problems referred to above.

Because above-mentioned prior art problems can't effectively solve and overcome, so the applicant proposes present patent application, to solve problem point.

Summary of the invention

The objective of the invention is to, a kind of fast opening spanner of the spiral shell spare that coincide is provided, solve the variety of problems that exists in the prior art.

For achieving the above object, the technical solution used in the present invention is:

A kind of fast opening spanner of the spiral shell spare that coincide is characterized in that, includes:

A body, it has a grip part and a folder jaw of being located at this grip part one end, this folder jaw is formed with one first jaw and one second jaw separated from one another in contrast to an end of this grip part, this folder jaw forms a jaw larynx between this first jaw and this second jaw, described jaw larynx, the space that first jaw and second jaw are centered on forms the mouth of pulling that holds working substance, this first jaw has in the face of pulling mouthful and towards an application of force plane of this second jaw end, this application of force plane can be corresponding to the first forward stress surface of working substance, be provided with an arc chute in this folder jaw, be installed with a guide posts in this chute;

A slide block, the chute of being located at this body folder jaw that it can camber line slides, this slide block has reciprocal first end and second end, first end of this slide block has emergence and goes out an outer switching face of this chute, this switching face can be corresponding to the 4th forward stress surface of working substance, second end of this slide block has emergence and goes out an outer locating surface of this chute, this locating surface can be corresponding to the 3rd forward stress surface of working substance, and the angle of this switching face and this locating surface is not more than the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface, this slide block is provided with a guide channel, the curved shape of this guide channel, in this guide channel is extended through for this guide posts, preventing that this slide block breaks away from this chute, this guide channel has an abutment end and top end of pulling, and this guide posts is limited to this abutment end and pull between the end in this top;

When working substance enters in this process of pulling mouth, working substance can this slide block of pushing tow second end, the locating surface of this slide block is contacted with the 3rd forward stress surface formation face of working substance, and then first end that makes this slide block is connected to the 4th forward stress surface of working substance automatically, and after the application of force plane of this first jaw is connected to the first forward stress surface of working substance, forming one first space between the abutment end of this slide block guide channel and this guide posts, pulls and forms one second space between end and this guide posts in the top of this slide block guide channel;

When this folder jaw switching working substance makes this folder jaw produce strain, this body rotates with respect to working substance, described first space can make first end of this slide block still be connected to the 4th forward stress surface of working substance when this presss from both sides the jaw elastic dilatation, and making this slide block drive working substance rotates, described first space makes the abutment end of this slide block can not meet this guide posts, prevents this guide posts torsional deformation and damages;

When this body backward rotation, described second space can allow this slide block can not drive working substance and rotate, and makes this folder jaw be connected next switching position in working substance.

In a preferable technical scheme: when folder jaw when not being connected working substance, this slide block be not subjected to the elastic force pushing tow and can nature in this chute, produce relative sliding relationship.

In a preferable technical scheme: be provided with an elastic device between this body and this slide block, make this slide block can automatically return to original position.

In a preferable technical scheme: this elastic device is located between the abutment end and this guide posts of this slide block guide channel.

In a preferable technical scheme: the switching face of this slide block equals the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface with the angle of this locating surface, make the locating surface of this slide block be resisted against the 3rd forward stress surface of working substance, the switching face of this slide block is resisted against the 4th forward stress surface of working substance.

In a preferable technical scheme: the angle of the switching face of this slide block and this locating surface is less than the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface, make have between the 4th forward stress surface of the switching face of this slide block and working substance an angle greater than twice press angle fully.

In a preferable technical scheme: this first space has one first arc length, and this second space has one second arc length, and when switching face was butted on working substance, first arc length was greater than the dimensional tolerance of working substance, and second arc length is greater than first arc length.

In a preferable technical scheme: first arc length is greater than half of this guide posts diameter.

In a preferable technical scheme: this chute has an arcs of recesses slippage wall, first supporting walls that is positioned at this slippage wall top is positioned at below this slippage wall with one and with respect to second supporting walls of this first supporting walls, other pore space structure do not offered by the slippage wall of this chute and to be concave arc planar, the two ends of this guide posts are individually fixed in this first supporting walls and this second supporting walls, one side of this slide block forms the slide surface of a convex, the slide surface of this slide block can slide on the slippage wall of this chute, the slide surface of this slide block does not offer other pore space structure and to be convex arc planar, the top of this slide block forms an end face, the below of this slide block forms a bottom surface, the guide channel of this slide block runs through end face and bottom surface, and does not offer other pore space structure in this guide channel.

In a preferable technical scheme: the curvature of the slide surface of this slide block equals the curvature of the slippage wall of this chute, the slide surface of this slide block can be smoothly at the slippage slip at wall of this chute, and this slide surface can pass to this slippage wall by large-area reaction force with working substance, the problem of avoiding stress to concentrate to disperse the stressed of this slide block, the torsion that this slide block can bear during this body switching of relative raising, the curvature of this guide channel is identical with the curvature of the slippage wall of this chute, so can produce relative smoothly camber line shuffle effect between the interior guide posts of the guide channel of this slide block and this chute, the situation that does not have interference takes place, this end face is contacted with first supporting walls of this chute, this bottom surface is contacted with second supporting walls of this chute, the end face of this slide block and bottom surface are by first supporting walls of this chute and the laterally zygomorphic support of second supporting walls, so this slide block will can not produce the problem of rocking during the camber line slippage in this chute, can improve the stability that open-end wrench uses, this first jaw and this second jaw system toward each other and the integrated both sides of being located at this folder jaw, so this folder jaw has good structural strength, therefore can increase the torsion that this folder jaw is born, this jaw larynx has in the face of pulling a pushing tow plane of mouth, the angle that has 120 degree between the pushing tow plane of this jaw larynx and the application of force plane of this first jaw, and the pushing tow plane of this jaw larynx is corresponding to the second forward stress surface of working substance, this second jaw has one first plane and one second plane, this first plane is in the face of pulling mouthful and towards the jaw larynx, this second plane is in the face of pulling mouthful and towards the first jaw end, the angle that has 120 degree between first plane of this second jaw and second plane, and first plane of this second jaw and second plane difference the 4th forward stress surface and the 3rd forward stress surface separately corresponding to working substance, first plane of this second jaw and the application of force plane parallel of this first jaw, this folder jaw is formed with one first portion of dodging between the pushing tow plane of the application of force plane of first jaw and this jaw larynx, this first portion of dodging can allow that the first reverse stress surface of working substance enters, this folder jaw is formed with one second portion of dodging between second plane of the pushing tow plane of jaw larynx and this second jaw, this second portion of dodging can allow that the second reverse stress surface of working substance enters, this folder jaw is formed with one the 3rd portion of dodging between second plane of first plane of second jaw and this second jaw, the 3rd portion of dodging can allow that the 3rd reverse stress surface of working substance enters.

Compared with prior art, the beneficial effect that has of the present invention is:

1. the present invention's fast opening spanner of spiral shell spare that can coincide, during the pulling muzzle and go into working substance of body, the locating surface of working substance pushing and pressing slide block, make slide block produce the camber line sliding motion, and then the switching face that makes slide block is automatically against the 4th forward stress surface of working substance, make slide block first end can effectively force in the relative two sides of working substance, to reach the effect of high torsion switching with the application of force plane of first jaw.

2. the present invention's fast opening spanner of spiral shell spare that can coincide, the switching face of slide block is not more than the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface with the angle of locating surface, when so the locating surface of slide block is resisted against the 3rd forward stress surface of working substance, can make the switching face of slide block be resisted against the 4th forward stress surface of working substance automatically, switching face and locating surface are resisted against simultaneously form on the working substance two sides against.

3. the present invention's fast opening spanner of spiral shell spare that can coincide, when folder jaw switching working substance makes the folder jaw produce strain, utilize between the second forward stress surface of pushing tow plane and working substance and have spacing, so the pulling mouthful a distortion back working substance and can inwardly in the pushing tow plane, move again of folder jaw, at this moment, first space of slide block can make the locating surface of slide block be subjected to working substance pushing and pressing generation camber line and move, make the switching face of slide block first end be connected to the 4th forward stress surface of working substance again, and keeping the effect of face contact.And first arc length in first space diminishes gradually.

Description of drawings

Fig. 1 is can the coincide stereo appearance figure of first embodiment of fast opening spanner of spiral shell spare of the present invention;

Fig. 2 is can the coincide three-dimensional exploded view of first embodiment of fast opening spanner of spiral shell spare of the present invention;

Fig. 3 is can the coincide profile of first embodiment of fast opening spanner of spiral shell spare of the present invention;

Fig. 4 is can coincide the pulling mouthful towards the close schematic diagram of working substance of first embodiment body of fast opening spanner of spiral shell spare of the present invention;

Fig. 5 is the continuity action diagram of Fig. 4 of the present invention, and second end of expression slide block is subjected to the schematic diagram of working substance pushing tow;

Fig. 6 is the continuity action diagram of Fig. 5 of the present invention, and first end of expression slide block and second end while are against the schematic diagram of working substance;

Fig. 7 is that can coincide first embodiment of fast opening spanner of spiral shell spare of the present invention pulls the schematic diagram of body;

Fig. 8 is that can coincide first embodiment of fast opening spanner of spiral shell spare of the present invention presss from both sides the schematic diagram of jaw elastic dilatation;

Fig. 9 is the schematic diagram of the present invention can coincide the body backward rotation of first embodiment of fast opening spanner of spiral shell spare the time;

Figure 10 is that can coincide first embodiment body of fast opening spanner of spiral shell spare of the present invention is positioned at the schematic diagram of next switching position;

Figure 11 is can the coincide schematic diagram of second embodiment of fast opening spanner of spiral shell spare of the present invention;

Figure 12 is can the coincide profile of the 3rd embodiment of fast opening spanner of spiral shell spare of the present invention;

Figure 13 is can coincide the pulling mouthful towards the close schematic diagram of working substance of the 3rd embodiment body of fast opening spanner of spiral shell spare of the present invention;

Figure 14 is the continuity action diagram of Figure 13 of the present invention, and first end of expression slide block is subjected to the schematic diagram of working substance pushing tow;

Figure 15 is the continuity action diagram of Figure 14 of the present invention, and first end of expression slide block and second end while are against the schematic diagram of working substance.

Description of reference numerals: 10-open-end wrench; The 20-body; The 21-grip part; 22-presss from both sides jaw; 221-first portion of dodging; 222-second portion of dodging; 223-the 3rd portion of dodging; 23-first jaw; 231-application of force plane; 24-second jaw; 241-first plane; 242-second plane; 25-jaw larynx; 251-pushing tow plane; 26-pulls mouth; The 27-chute; 271-slippage wall; 272-first supporting walls; 273-second supporting walls; The 274-through hole; The 28-guide posts; The 30-slide block; The 301-end face; The 302-bottom surface; 303-first end; 304-second end; The 31-slide surface; 32-switching face; The 33-locating surface; 34-avoidance portion; The 35-guide channel; The 351-abutment end; 352-pushes up the end of pulling; 36-first space; 37-second space; The 40-elastic device; The 90-working substance; The 91A-first forward stress surface; The 91B-first reverse stress surface; The 92A-second forward stress surface; The 92B-second forward stress surface; 93A-the 3rd forward stress surface; 93B-the 3rd reverse stress surface; 94A-the 4th forward stress surface; 94B-the 4th reverse stress surface; 95A-the 5th forward stress surface; 95B-the 5th reverse stress surface; 96A-the 6th forward stress surface; 96B-the 6th reverse stress surface; The D28-diameter; The W35-groove width; AL36-first arc length; AL37-second arc length; The D-spacing; α 1-angle; α 0-angle; θ-press fully angle.

The specific embodiment

Relevant the technology used in the present invention, means and effect thereof, lift three preferred embodiments now and cooperate graphic detailed description as after, this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.

Referring to figs. 1 through Fig. 6, be can coincide first embodiment of fast opening spanner of spiral shell spare of the present invention.Open-end wrench 10 of the present invention includes a body 20 and a slide block 30; Wherein:

Body 20 has a grip part 21 and a folder jaw 22 of being located at grip part 21 1 ends.Folder jaw 22 can be connected working substance 90, the hexagon-head of bolt as shown in Figure 4, when working substance 90 is the bolt hexagon-head, six stress surfaces are with the counterclockwise annular arrangement of seven o'clock direction of hexagon-head, be the first forward stress surface 91A to the, six forward stress surface 96A in regular turn, in like manner, also have first reverse stress surface 91B to the six reverse stress surface 96B.The user can be gripped on grip part 21 and pull body 20 and make folder jaw 22 is that rotate in the center of circle with the axle center of working substance 90, reaches the effect of switching working substance 90.

An end of 21 is formed with the reaction force that is produced when one first jaw 23 separated from one another and one second jaw 24, the first jaw 23 and second jaw 24 can bear switching working substance 90 to folder jaw 22 in contrast to the grip part.First jaw 23 and second jaw 24 toward each other and integrated be located at the folder jaw 22 both sides, so first jaw 23 can not produce relative displacement relation with second jaw 24, make folder jaw 22 have good structural strength, therefore can increase the torsion that folder jaw 22 is born.

Folder jaw 22 forms a jaw larynx 25 between first jaw 23 and second jaw 24, the space that jaw larynx 25, first jaw 23 and second jaw 24 are centered on form substantially one be hexagonal configuration pull mouthfuls 26, folder jaw 22 can move along the radial direction of working substance 90 and allow working substance 90 enter to pull in mouthfuls 26, perhaps presss from both sides jaw 22 and also can move and allow working substance 90 enter to pull in mouthfuls 26 along the axis direction that is parallel to working substance 90.

First jaw 23 has in the face of pulling mouthfuls 26 and towards an application of force plane 231 of second jaw, 24 ends, application of force plane 231 can be corresponding to the first forward stress surface 91A of working substance 90, second jaw 24 has one first plane 241 and one second plane 242, first plane 241 is in the face of pulling mouthfuls 26 and towards jaw larynx 25, second plane 242 is in the face of pulling mouthfuls 26 and towards first jaw, 23 ends, the angle that has 120 degree between first plane 241 of second jaw 24 and second plane 242 is so separately the 4th forward stress surface 94A and the 3rd forward stress surface 93A corresponding to working substance 90 can be distinguished in first plane 241 of second jaw 24 and second plane 242.First plane 241 of second jaw 24 is parallel with the application of force plane 231 of first jaw 23 substantially.

Jaw larynx 25 has in the face of pulling a pushing tow plane 251 of mouth 26, the angle that has 120 degree between the application of force plane 231 of the pushing tow plane 251 of jaw larynx 25 and first jaw 23 is so the pushing tow plane 251 of jaw larynx 25 can be corresponding to the second forward stress surface 92A of working substance 90.

Folder jaw 22 is formed with the portion 221 of dodging of one first portion 221, the first of dodging between the pushing tow plane 251 of the application of force plane 231 of first jaw 23 and jaw larynx 25 can allow that the first reverse stress surface 91B of working substance 90 enters.Folder jaw 22 is formed with the portion 222 of dodging of one second portion 222, the second of dodging between second plane 242 of the pushing tow plane 251 of jaw larynx 25 and second jaw 24 can allow that the second reverse stress surface 92B of working substance 90 enters.Folder jaw 22 is formed with the portion 223 of dodging of one the 3rd portion 223, the three of dodging between second plane 242 of first plane 241 of second jaw 24 and second jaw 24 can allow that the 3rd reverse stress surface 93B of working substance 90 enters.

Also be provided with an arc chute 27 in the folder jaw 22, chute 27 is located at second jaw 24 with respect to a side of pulling mouthfuls 26, and chute 27 has that an arcs of recesses slippage wall 271, one are positioned at that first supporting walls 272 of slippage wall 271 tops and one are positioned at slippage wall 271 belows and with respect to second supporting walls 273 of first supporting walls 272.The slippage wall 271 of chute 27 is not offered other pore space structure and to present complete concave arc planar, has therefore guaranteed the structural strength of second jaw 24, the switching work that makes folder jaw 22 can bear high torsion.And the position, the center of circle of slippage wall 271 cancave cambered surfaces so the processing of chute 27 only utilizes a milling cutter to finish, processes structural strength simply quick, with low cost and that can guarantee to press from both sides jaw 22 in pulling mouth 26.

First supporting walls 272 of folder jaw 22 and second supporting walls 273 are parallel to each other and make chute 27 have a spacing.

Folder jaw 22 offers the through hole 274 of a circle in second jaw 24 with respect to the position of chute 27 first supporting walls 272 and second supporting walls 273, and through hole 274 is near jaw larynxs 25 and pass first supporting walls 272 and second supporting walls 273 of chute 27.Through hole 274 can be in conjunction with a columniform guide posts 28, and the two ends of guide posts 28 are individually fixed in the through hole 274 of first supporting walls 272 and second supporting walls 273, makes guide posts 28 fixed being fixedly arranged in the chute 27.Guide posts 28 has a diameter D28.

But the chute 27 of being located at body 20 folder jaws 22 that slide block 30 camber lines slide, and slide block 30 can drive that working substance 90 rotates or in the relative slippage in the outside of working substance 90.In the present embodiment, when folder jaw 22 when not being connected working substance 90, slide block 30 is not subjected to the elastic force pushing tow and the relative camber line sliding relationship of generation in chute 27 in that can nature.The curved substantially bulk of slide block 30, and the slide surface 31 of a convex of a side of slide block 30 formation, the slide surface 31 of slide block 30 can slide on the slippage wall 271 of chute 27, makes slide block 30 and folder jaw 22 produce relative camber line sliding relationship.The slide surface 31 of slide block 30 is not offered other pore space structure and to present complete convex arc planar, has therefore guaranteed the structural strength of slide block 30 to make slide block 30 can bear the switching work of high torsion.

The curvature of the slide surface 31 of slide block 30 equals the curvature of the slippage wall 271 of chute 27, so slide surface 31 slippage on the slippage wall 271 of chute 27 smoothly of slide block 30, and, when slide block 30 bears the reaction force that working substance 90 executed, because of slide surface 31 identical with the curvature of slippage wall 271, so slide surface 31 can pass to slippage wall 271 by large-area reaction force with working substance 90, the problem of disperseing the stressed of slide block 30 and avoiding stress to concentrate, relative also is the torsion that slide block 30 can bear when improving body 20 switchings.

Slide block 30 has reciprocal first end 303 and second end 304, and first end 303 of slide block 30 can switching working substance 90.First end 303 of slide block 30 has emergence and goes out chute 27 a switching face 32 outward, second end 304 of slide block 30 has emergence and goes out chute 27 locating surface 33 outward, switching face 32 is formed at the side of slide block 30 in contrast to slide surface 31 with locating surface 33, and switching face 32 is for switching working substance 90.Switching face 32 is away from jaw larynx 25, and locating surface 33 is close to jaw larynxs 25.

Locating surface 33 can be corresponding to the 3rd forward stress surface 93A of working substance 90, when working substance 90 enters in this process of pulling mouth 26, working substance 90 can pushing tow slide block 30 second end 304, the locating surface 33 of slide block 30 is contacted with the 3rd forward stress surface 93A formation face of working substance 90, and then make first end 303 of slide block 30 be connected to the 4th forward stress surface 94A of working substance 90 automatically.So, the switching face 32 that promptly can effectively prevent limited slip block 30 only single-point is contacted with the 3rd forward stress surface 93A of working substance 90 and the situation at place, the end angle between the 4th forward stress surface 94A takes place, and just can not cause the problem at switching face 32 wearing and tearing working substances 90 end angles when carrying out the switching operation.

Have an angle α 1 between switching face 32 and the locating surface 33, and the angle α 1 of the switching face 32 of slide block 30 and locating surface 33 is not more than the 4th forward stress surface 94A of working substance 90 and the angle α 0 of the 3rd forward stress surface 93A.The switching face 32 of slide block 30 can be corresponding to the 4th forward stress surface 94A of working substance 90, and when if first end 303 of slide block 30 is subjected to replacing of working substance 90, and slide block 30 can be clockwise produces camber line slippage action towards the direction of first jaw 23.The locating surface 33 of slide block 30 can be corresponding to the 3rd forward stress surface 93A of working substance 90, and when if second end 304 of slide block 30 is subjected to replacing of working substance 90, slide block 30 can move towards the direction generation camber line slippage of second jaw 24 counterclockwise, contact with the 3rd forward stress surface 93A applying formation face of working substance 90 until locating surface 33, make switching face 32 be connected to the 4th forward stress surface 94A of working substance 90 automatically simultaneously.So, the switching face 32 that promptly can effectively prevent limited slip block 30 only single-point is contacted with the 3rd forward stress surface 93A of working substance 90 and the situation at place, the end angle between the 4th forward stress surface 94A takes place, and just can not cause the problem at switching face 32 wearing and tearing working substances 90 end angles when carrying out the switching operation.Slide block 30 is formed with an avoidance portion 34 between switching face 32 and locating surface 33, avoidance portion 34 can allow that the 3rd reverse stress surface 93B of working substance 90 enters.

The top of slide block 30 forms an end face 301, and end face 301 is contacted with first supporting walls 272 of chute 27, and the below of slide block 30 forms a bottom surface 302, and bottom surface 302 is contacted with second supporting walls 273 of chute 27.End face 301 and bottom surface 302 are parallel to each other and make slide block 30 have a height.Cooperate to reserve under the situation of tolerance in that male and female is not discussed, the height of slide block 30 equals the spacing of chute 27, makes the end face 301 of slide block 30 can be by first supporting walls 272 of chute 27 and the 273 laterally zygomorphic supports of second supporting walls with bottom surface 302.Because the end face 301 of slide block 30 and bottom surface 302 are by first supporting walls 272 of chute 27 and the 273 laterally zygomorphic supports of second supporting walls, so slide block 30 will can not produce the problem of rocking during the camber line slippage in chute 27 in, can improve the stability in open-end wrench 10 uses.

Slide block 30 also is provided with a guide channel 35 that runs through end face 301 and bottom surface 302, and guide channel 35 is curved shape, and the curvature of guide channel 35 is identical with the curvature of the slippage wall 271 of chute 27.Because guide channel 35 is to run through end face 301 and bottom surface 302, so that guide channel 35 has a groove is high in the height of slide block 30, guide channel 35 has a groove width W35, and groove width W35 is the distance that the big cambered surface radius of guide channel 35 deducts little cambered surface radius.Do not considering that male and female cooperates under the situation of reserving tolerance, the groove width W35 of guide channel 35 equals the diameter D28 of guide posts 28.The groove of guide channel 35 is tall and big also be we can say in 1.5 times of groove width W35, and the groove width W35 of guide channel 35 is less than high 0.66 times of groove.In the present embodiment, the groove of guide channel 35 is tall and big in 2 times of groove width W35, and just the groove width W35 of guide channel 35 is less than high 0.5 times of groove.

In guide channel 35 is extended through for guide posts 28, in case limited slip block 30 breaks away from chute 27.Because the curvature of the slide surface 31 of slide block 30 and the guide channel 35 all curvature with the slippage wall 271 of chute 27 is identical, when so the slide surface 31 of slide block 30 carries out the camber line sliding motion on the slippage wall 271 of chute 27, also can produce relative smoothly camber line shuffle effect between the guide posts 28 in the guide channel 35 of slide block 30 and the chute 27, not have the situation generation of interference.

Guide channel 35 has an abutment end 351 and top end 352 of pulling, guide posts 28 is pulled between the end 352 at abutment end 351 and top, when working substance 90 enters in the process of pulling mouth 26, working substance 90 can pushing tow slide block 30 second end 304, the locating surface 33 of slide block 30 is contacted with the 3rd forward stress surface 93A formation face of working substance 90, and then first end 303 that makes slide block 30 is connected to the 4th forward stress surface 94A of working substance 90 automatically, and after the application of force plane 231 of first jaw 23 is connected to the first forward stress surface 91A of working substance 90, forming one first space 36 between the abutment end 351 of slide block 30 guide channels 35 and the guide posts 28, pulls and forms one second space 37 between end 352 and the guide posts 28 in the top of slide block 30 guide channels 35.

When folder jaw 22 switching working substances 90 make folder jaw 22 produce strain, body 20 rotates with respect to working substance 90, described first space 36 can make first end 303 of slide block 30 still be connected to the 4th forward stress surface 94A of working substance 90 when folder jaw 22 elastic dilatations, and making slide block 30 drive working substance 90 rotates, described first space 36 makes the abutment end 351 of slide block 30 can not run into guide posts 28, prevents guide posts 28 torsional deformations and damages.

When body 20 backward rotation, described second space 37 can allow slide block 30 can not drive working substance 90 and rotate, and makes folder jaw 22 be connected next switching position in working substance 90.

Furthermore, first space 36 has one first arc length AL36, second space 37 has one second arc length AL37, when the abutment end 351 of guide channel 35 and guide posts 28 are closer to each other, the first arc length AL36 in first space 36 in the guide channel 35 reduces, the second arc length AL37 in second space 37 increases, so that switching face 32 still can be resisted against the 4th forward stress surface 94A of working substance 90, and this moment, locating surface 33 also can be connected to the 3rd forward stress surface 93A of working substance 90, to reach the switching effect of superelevation torsion.

When the top of guide channel 35 pull the end 352 with guide posts 28 near the time, the first arc length AL36 in first space 36 in the guide channel 35 increases, the second arc length AL37 in second space 37 reduces, so that switching face 32 is away from the 4th forward stress surface 94A of working substance 90, and can allow folder jaw 22 be connected next switching position in working substance 90.

The first arc length AL36 in first space 36 must allow the dimensional tolerance that produces man-hour adding greater than working substance 90.That is to say that do not considering that working substance 90 takes place under the slightly variant dimensional tolerance situation of size in same specification, the first arc length AL36 in first space 36 must be greater than the dimensional tolerance of working substance 90.So, the effect that the switching face 32 that makes slide block 30 when allowing folder jaw 22 elastic dilatations still is connected to the 4th forward stress surface 94A of working substance 90 can be effectively reached in first space 36.

Better person, the first arc length AL36 in first space 36 are half greater than guide channel 35 groove width W35, and also, the first arc length AL36 in first space 36 is greater than half of guide posts 28 diameter D28.

Do not offer other pore space structure in the guide channel 35, effectively avoid the concentrated problem of stress, therefore guaranteed the structural strength of slide block 30, make slide block 30 can bear the switching work of high torsion.Simultaneously,,, make product itself have and bear high torsion and cheap advantage, can extensively be subjected to industry utilization so the processing cost of slide block 30 can effectively reduce owing to all do not offer other pore space structure in the slide surface 31 of slide block 30 and the guide channel 35.

When the folder jaw 22 of open-end wrench 10 is not connected working substance 90, because slide block 30 is not subjected to the elastic force pushing tow, so the relative camber line sliding relationship of generation in chute 27 that slide block 30 can be natural.At this moment, the abutment end 351 of guide channel 35 or the top end of pulling 352 may neither can contact guide posts 28, and perhaps, the abutment end 351 of guide channel 35 or the top end 352 of pulling has one and can be close to or contact guide posts 28.The person is the top of guide channel 35 end 352 situations about contacting with guide posts 28 of pulling as shown in Figure 3.

With reference to Fig. 4 to Fig. 6, be the schematic diagram of open-end wrench 10 folder jaws 22 linking working substances 90 of the present invention, expression working substance 90 enters the process of pulling mouth 26.When the folder jaw 22 of open-end wrench 10 will be connected working substance 90, body 20 is close towards working substance 90, make second forward stress surface 92A of working substance 90 and the locating surface 33 that the end angle between the 3rd forward stress surface 93A is resisted against slide block 30, and allow the application of force plane 231 of first jaw 23 of folder jaw 22 be connected to the first forward stress surface 91A of working substance 90, as shown in Figure 4.

When the locating surface 33 of slide block 30 second ends 304 is subjected to replacing of working substance 90, body 20 continues close towards working substance 90, working substance 90 can promote second end of slide block 30, make slide block 30 produce anticlockwise camber line sliding motion with respect to chute 27, and allow the abutment end 351 of slide block 30 guide channels 35 towards guide posts 28 slippages, and then make the three forward stress surface 93A of locating surface 33 near working substance 90, as shown in Figure 5.

Then body 20 continues close towards working substance 90, as shown in Figure 6, the abutment end 351 of slide block 30 guide channels 35 continues towards guide posts 28 slippages, be resisted against the 3rd forward stress surface 93A formation face contact of working substance 90 until the locating surface 33 of slide block 30, so that first end 303 of slide block 30 is connected to the 4th forward stress surface 94A of working substance 90 automatically.

In the present embodiment, the switching face 32 of slide block 30 equals the 4th forward stress surface 94A of working substance 90 and the angle α 0 of the 3rd forward stress surface 93A with the angle α 1 of locating surface 33, when so the locating surface 33 of slide block 30 is resisted against the 3rd forward stress surface 93A of working substance 90, can make the switching face 32 of slide block 30 fit in the 4th forward stress surface 94A of working substance 90 automatically, switching face 32 and locating surface 33 are fitted in simultaneously form on the working substance 90 two sides against.

At the same time, can see that first space 36 is present between the abutment end 351 and guide posts 28 of slide block 30 guide channels 35, and the first arc length AL36 in first space 36 is greater than the dimensional tolerance of working substance 90 under this specification.

When working substance 90 enter folder jaw 22 pull in mouthfuls 26 the time, the locating surface 33 of slide block 30 is promoted by working substance 90, making slide block 30 produce camber line with respect to body 20 moves, be contacted with the 4th forward stress surface 94A of working substance 90 up to first end 303 of slide block 30, can make the switching face 32 of slide block 30 first ends 303 fit in the 4th forward stress surface 94A of working substance 90, the contact of formation face automatically.Because the 4th forward stress surface 94A and the first forward stress surface 91A of working substance 90 are parallel to each other, so the switching face 32 of slide block 30 is parallel with the application of force plane 231 of first jaw 23 haply.

Rely on the locating surface 33 of slide block 30 to be pushed against by working substance 90, slide block 30 first ends 303 are butted on the 4th forward stress surface 94A of working substance 90 automatically, and switching face 32 is applying the 4th forward stress surface 94A automatically, make slide block 30 first ends 303 and the application of force plane 231 of first jaw 23 can effectively force in the relative two sides of working substance 90, so, the switching face 32 that promptly can effectively prevent limited slip block 30 only single-point is contacted with the 3rd forward stress surface 93A of working substance 90 and the situation at place, the end angle between the 4th forward stress surface 94A takes place, when carrying out the switching operation with regard to not causing the problem at switching face 32 wearing and tearing working substances 90 end angles, to reach the effect of high torsion switching.

With reference to Fig. 7, be open-end wrench 10 of the present invention state diagram with 90 rotations of drive working substance along folder jaw 22 towards the 23 direction switchings of first jaw.

The user can pull grip part 21 towards first jaw, 23 directions along folder jaw 22, and folder jaw 22 is rotated with the center of circle of working substance 90.User's the application of force passes to the first forward stress surface 91A of working substance 90 via the application of force plane 231 of first jaw 23, user's the application of force also passes to the 4th forward stress surface 94A of working substance 90 via the switching face 32 of slide block 30 simultaneously, so can make working substance 90 and then press from both sides jaw 22 and rotate.In the aforementioned operation process, the locating surface 33 of slide block 30 is connected to the 3rd forward stress surface 93A of working substance 90, has the subband effect that crop 90 rotates of starting building.

Because first jaw 23 is the integrated folder jaws 22 of being located at, so the reaction force of working substance 90 first forward stress surface 91A can be effectively born on the application of force plane 231 of first jaw 23.Again because second jaw 24 is the integrated folder jaw 22 of being located at, and the slide surface 31 of slide block 30 is not all offered other hole with the slippage wall 271 of chute 27, the slide surface 31 of slide block 30 is identical with slippage wall 271 curvature of chute 27, be face and the contacting of face, so the switching face 32 of slide block 30 can effectively bear the reaction force of working substance 90 the 4th forward stress surface 94A, therefore, open-end wrench 10 of the present invention can bear the switching operation of high torsion.

Meanwhile, the locating surface 33 of slide block 30 is pushed against by working substance 90, slide block 30 first ends 303 are butted on the 4th forward stress surface 94A of working substance 90 automatically, and switching face 32 is applying the 4th forward stress surface 94A automatically, make slide block 30 first ends 303 and the application of force plane 231 of first jaw 23 can effectively force in the relative two sides of working substance 90, to reach the effect of high torsion switching.

Because the user carries out the application of force by the grip part 21 of body 20, the application of force of supposing the user immobilizes, the arm of force length of body 20 immobilizes, the clockwise moment of body 20 just can drive working substance 90 rotations so, just stops operating when working substance 90 counterclockwise moments equal the clockwise moment of body 20.

With reference to Fig. 8, for will be further tighter with working substance 90 locks, extension of socket again in body 20 grip parts 21, to prolong arm of force length, the user produces bigger moment effect under identical application of force situation.

The angle that has 120 degree between the application of force plane 231 of the pushing tow plane 251 of jaw larynx 25 and first jaw 23, and the pushing tow plane 251 of jaw larynx 25 is corresponding to the second forward stress surface 92A of working substance 90, and has a space D between the second forward stress surface 92A of pushing tow plane 251 and working substance 90, so that working substance 90 also has towards pulling mouthful 26 inner spaces of moving, and have space D between the second forward stress surface 92A of the pushing tow face 251 of folder jaw 22 and working substance 90 and do not contact.

When user's application of force makes working substance 90 be locked against to a certain degree, the reaction force that working substance 90 imposes on folder jaw 22 becomes big, cause pressing from both sides jaw 22 and begin to produce strain, and working substance 90 no longer and then open-end wrench 10 rotate, make body 20 clockwise rotating gradually with respect to working substance 90.Press from both sides to make when jaw 22 switching working substances 90 make folder jaw 22 produce strains and pull mouthful 26 changes greatly, utilize between the second forward stress surface 92A of pushing tow plane 251 and working substance 90 and have space D, so mouthfuls 26 distortion back working substances 90 of pulling of folder jaw 22 can be more inwardly move in 251 towards the pushing tow plane, at this moment, first space 36 of slide block 30 can make the locating surface 33 of slide block 30 be subjected to working substance 90 pushing and pressing generation camber lines and move, make the switching face 32 of slide block 30 first ends 303 still be connected to the 4th forward stress surface 94A of working substance 90, and keeping the effect of face contact.And the first arc length AL36 in first space 36 diminishes gradually.

Owing to folder jaw 22 can make opening angle become big gradually by elastic dilatation, the stress that folder jaw 22 in the strain is born increases gradually, constantly resistance to deformation, when the stress of folder jaw 22 resistances to deformation imposed on the reaction force of folder jaw 22 greater than working substance 90, folder jaw 22 no longer produced strain.At this moment, slide block 30 can be driven by folder jaw 22 again once more, allows open-end wrench 10 carry out the switching operation of superelevation torsion.

Afterwards, the user can pull towards first jaw, 23 directions along folder jaw 22, and folder jaw 22 is rotated with the center of circle of working substance 90.User's the application of force passes to the first forward stress surface 91A of working substance 90 via the application of force plane 231 of first jaw 23, user's the application of force also passes to the 4th forward stress surface 94A of working substance 90 via the switching face 32 of slide block 30 simultaneously, so can make working substance 90 continue and then to press from both sides jaw 22 and rotate, carry out the switching operation of superelevation torsion.At last, till working substance 90 is locked.In the aforementioned operation process, the pushing tow plane 251 of jaw larynx 25 is connected to the second forward stress surface 92A of working substance 90, also has the subband effect that crop 90 rotates of starting building.

With reference to Fig. 9 and Figure 10, when folder jaw 22 is given up the throne with respect to working substance 90, the switching face 32 of slide block 30 is subjected to replacing of working substance 90 the 4th forward stress surface 94A, second space 37 can make slide block 30 produce the camber line sliding relationship with respect to body 20 in chute 27, slide block 30 is towards first jaw, 23 slippages of folder jaw 22, the first arc length AL36 in first space 36 in the guide channel 35 increases, the second arc length AL37 in second space 37 reduces, so that switching face 32 is away from the 4th forward stress surface 94A of working substance 90, can allow slide block 30 can not drive working substance 90 and rotate, and make folder jaw 22 be connected next switching position in working substance 90.

With reference to Figure 11, be can coincide second embodiment of fast opening spanner of spiral shell spare of the present invention.Present embodiment is identical with aforementioned first embodiment haply, and the switching face 32 that its difference is slide block 30 and the angle α 1 of locating surface 33 are less than the 4th forward stress surface 94A of working substance 90 and the angle α 0 of the 3rd forward stress surface 93A.Furthermore, the angle α 1 of the switching face 32 of slide block 30 and locating surface 33 is less than 110 octaves.

When folder jaw 22 is connected working substances 90 and not during switching working substance 90, the locating surface 33 of slide block 30 is connected to the 3rd forward stress surface 93A formation face contact of working substance 90, make first end 303 of slide block 30 be connected to the 4th forward stress surface 94A of working substance 90 automatically, at this moment, have between the 4th forward stress surface 94A of the switching face 32 of slide block 30 and working substance 90 angle greater than twice press angle theta fully.That is to say to have angle between the switching face 32 of slide block 30 and the locating surface 33 less than 110 octaves.So when folder jaw 22 elastic dilatations, the described angle theta of pressing is fully allowed body 20 and slide block 30 clockwise rotating with respect to working substance 90 gradually, make the switching face 32 of slide block 30 be connected to the 4th forward stress surface 94A of working substance 90, so that switching face 32 contacts with the 4th forward stress surface 94A formation face, can reach the effect of high torsion switching equally.

With reference to Figure 12, be can coincide the 3rd embodiment of open-end wrench of spiral shell spare of the present invention, present embodiment is identical with aforementioned first embodiment substantially, and its difference is that open-end wrench 10 is provided with an elastic device 40 between body 20 and slide block 30, make slide block 30 can automatically return to original position.

The two ends of elastic device 40 are resisted against the top of guide posts 28 and guide channel 35 respectively and pull between the end 352, make slide block 30 can automatically return to original position.When folder jaw 22 was not connected working substance 90, slide block 30 was subjected to the pushing tow of elastic device 40 and the abutment end 351 of guide channel 35 is contacted with guide posts 28.

With reference to Figure 13 to Figure 15, for third embodiment of the invention open-end wrench 10 allows working substance 90 enter to pull mouthfuls 26 schematic diagram.

When folder jaw 22 will be connected working substance 90, body 20 is close towards working substance 90, working substance 90 can first pushing tow slide block 30 first end 303, make slide block 30 produce clockwise camber line sliding motion with respect to chute 27, allow the abutment end 351 of slide block 30 guide channels 35 away from guide posts 28.The application of force plane 231 that presss from both sides first jaw 23 of jaw 22 simultaneously is connected to the first forward stress surface 91A of working substance 90.

After working substance 90 was pushed first end 303 of slide block 30 open, the top of elastic device 40 pushing and pressing slide blocks 30 guide channels 35 end 352 of pulling made the locating surface 33 of slide block 30 be close to the 4th forward stress surface 94A of working substance 90.When body 20 continues close towards working substance 90, slide block 30 is subjected to the pushing tow of elastic device 40 and the abutment end 351 of guide channel 35 is continued towards guide posts 28 slippages, be resisted against the 3rd forward stress surface 93A formation face contact of working substance 90 until the locating surface 33 of slide block 30, make first end 303 of slide block 30 be connected to the 4th forward stress surface 94A of working substance 90 automatically.So, the switching face 32 that promptly can effectively prevent limited slip block 30 only single-point is contacted with the 3rd forward stress surface 93A of working substance 90 and the situation at place, the end angle between the 4th forward stress surface 94A takes place, and just can not cause the problem at switching face 32 wearing and tearing working substances 90 end angles when carrying out the switching operation.

More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.

Claims

1. the fast opening spanner of the spiral shell spare that can coincide is characterized in that, includes:

2. the fast opening spanner of the spiral shell spare that coincide according to claim 1 is characterized in that: when folder jaw when not being connected working substance, this slide block be not subjected to the elastic force pushing tow and can nature in this chute, produce relative sliding relationship.

3. the fast opening spanner of the spiral shell spare that coincide according to claim 1 is characterized in that: be provided with an elastic device between this body and this slide block, make this slide block can automatically return to original position.

4. the fast opening spanner of the spiral shell spare that coincide according to claim 3 is characterized in that: this elastic device is located between the abutment end and this guide posts of this slide block guide channel.

5. according to the fast opening spanner of each described spiral shell spare that coincide in the claim 1 to 3, it is characterized in that: the switching face of this slide block equals the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface with the angle of this locating surface, make the locating surface of this slide block be resisted against the 3rd forward stress surface of working substance, the switching face of this slide block is resisted against the 4th forward stress surface of working substance.

6. according to the fast opening spanner of each described spiral shell spare that coincide in the claim 1 to 3, it is characterized in that: the angle of the switching face of this slide block and this locating surface is less than the 4th forward stress surface of working substance and the angle of the 3rd forward stress surface, make have between the 4th forward stress surface of the switching face of this slide block and working substance an angle greater than twice press angle fully.

7. according to the fast opening spanner of each described spiral shell spare that coincide in the claim 1 to 3, it is characterized in that: this first space has one first arc length, this second space has one second arc length, when switching face is butted on working substance, first arc length is greater than the dimensional tolerance of working substance, and second arc length is greater than first arc length.

8. the fast opening spanner of the spiral shell spare that coincide according to claim 7 is characterized in that: first arc length is greater than half of this guide posts diameter.

9. according to the fast opening spanner of each described spiral shell spare that coincide in the claim 1 to 3, it is characterized in that: this chute has an arcs of recesses slippage wall, first supporting walls that is positioned at this slippage wall top is positioned at below this slippage wall with one and with respect to second supporting walls of this first supporting walls, other pore space structure do not offered by the slippage wall of this chute and to be concave arc planar, the two ends of this guide posts are individually fixed in this first supporting walls and this second supporting walls, one side of this slide block forms the slide surface of a convex, the slide surface of this slide block can slide on the slippage wall of this chute, the slide surface of this slide block does not offer other pore space structure and to be convex arc planar, the top of this slide block forms an end face, the below of this slide block forms a bottom surface, the guide channel of this slide block runs through end face and bottom surface, and does not offer other pore space structure in this guide channel.

10. the fast opening spanner of the spiral shell spare that coincide according to claim 9, it is characterized in that: the curvature of the slide surface of this slide block equals the curvature of the slippage wall of this chute, the slide surface of this slide block can be smoothly at the slippage slip at wall of this chute, and this slide surface can pass to this slippage wall by large-area reaction force with working substance, the problem of avoiding stress to concentrate to disperse the stressed of this slide block, the torsion that this slide block can bear during this body switching of relative raising, the curvature of this guide channel is identical with the curvature of the slippage wall of this chute, so can produce relative smoothly camber line shuffle effect between the interior guide posts of the guide channel of this slide block and this chute, the situation that does not have interference takes place, this end face is contacted with first supporting walls of this chute, this bottom surface is contacted with second supporting walls of this chute, the end face of this slide block and bottom surface are by first supporting walls of this chute and the laterally zygomorphic support of second supporting walls, so this slide block will can not produce the problem of rocking during the camber line slippage in this chute, can improve the stability that open-end wrench uses, this first jaw and this second jaw system toward each other and the integrated both sides of being located at this folder jaw, so this folder jaw has good structural strength, therefore can increase the torsion that this folder jaw is born, this jaw larynx has in the face of pulling a pushing tow plane of mouth, the angle that has 120 degree between the pushing tow plane of this jaw larynx and the application of force plane of this first jaw, and the pushing tow plane of this jaw larynx is corresponding to the second forward stress surface of working substance, this second jaw has one first plane and one second plane, this first plane is in the face of pulling mouthful and towards the jaw larynx, this second plane is in the face of pulling mouthful and towards the first jaw end, the angle that has 120 degree between first plane of this second jaw and second plane, and first plane of this second jaw and second plane difference the 4th forward stress surface and the 3rd forward stress surface separately corresponding to working substance, first plane of this second jaw and the application of force plane parallel of this first jaw, this folder jaw is formed with one first portion of dodging between the pushing tow plane of the application of force plane of first jaw and this jaw larynx, this first portion of dodging can allow that the first reverse stress surface of working substance enters, this folder jaw is formed with one second portion of dodging between second plane of the pushing tow plane of jaw larynx and this second jaw, this second portion of dodging can allow that the second reverse stress surface of working substance enters, this folder jaw is formed with one the 3rd portion of dodging between second plane of first plane of second jaw and this second jaw, the 3rd portion of dodging can allow that the 3rd reverse stress surface of working substance enters.