CN103831763B - Adjustable wrench - Google Patents
Adjustable wrench Download PDFInfo
- Publication number
- CN103831763B CN103831763B CN201410072138.2A CN201410072138A CN103831763B CN 103831763 B CN103831763 B CN 103831763B CN 201410072138 A CN201410072138 A CN 201410072138A CN 103831763 B CN103831763 B CN 103831763B
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- China
- Prior art keywords
- hole
- hand member
- bonnet
- bar
- protecgulum
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
- B25B13/14—Spanners; Wrenches with adjustable jaws the jaws being slidable by rack and pinion, worm or gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a kind of adjustable wrench, overcome the problem that there is intricate operation in existing spanner, it comprises driving end (1), torsion bar (2), spanner governor motion (3) and stop mechanism (4).Torsion bar (2) is hollow multidiameter, high order end external cylindrical surface is provided with screw thread, diameter shaft part broad in the middle is provided with the button groove of strip, the center of button groove is provided with the square tube hole be communicated with axially extending bore, the right-hand member of torsion bar (2) axially extending bore is provided with screw thread, right-hand member external cylindrical surface is provided with jump ring annular groove.The left end of torsion bar (2) is threaded with the right-hand member of bonnet (5) in driving end (1), the left end of the transmission thin bar (14) in spanner governor motion (3) is threaded with the tooth bar (13) in driving end (1), the left end screwing screw rod (19) of spanner governor motion (3) and being threaded of torsion bar (2) right-hand member, stop mechanism (4) is fitted in button groove by guard shield (27).
Description
Technical field
The present invention relates to a kind of a kind of instrument belonging to mechanical field, or rather, the present invention relates to a kind of adjustable wrench.
Background technology
Along with the progress of society, the raising of productivity, operating efficiency and work quality have become the focus that the mankind pay close attention to.Often need to twist screw in industrial and mining enterprises and daily life loaded down with trivial detailsly, common shfting wrench is after according to workpiece (screw or nut) size adjustment good spanner pawl spacing dimension (making spanner pawl clamping work pieces), and when tightening (or loosening) workpiece, each oscillation cycle also needs spanner each once from demolition, installation workpiece.Work and so forth considerably increases intensity and the fussy degree of work.
Even if also there are some defects in ratchet spanner.When be used for stubborn different workpiece time, need to change different wrench socket, man-to-man work can only be realized, lack the versatility of instrument, also will increase the triviality of work so undoubtedly.
Therefore in order to reduce the fussy degree of this kind of work, increase work efficiency, design one can unclamp spanner pawl in the intervals of business automatically, again can Automatic-clamping workpiece and have the adjustable wrench of versatility during work, has become the active demand that related industry and technical field face.
Summary of the invention
Technical problem to be solved by this invention overcomes the problem that there is intricate operation in existing spanner, and propose a kind of rational in infrastructure, superior performance, can realize the adjustable wrench of Quick fastening and loosening threaded connector preferably.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described adjustable wrench is by driving end, and torsion bar, spanner governor motion and stop mechanism form.
Described torsion bar is a multidiameter being provided with axially extending bore, high order end external cylindrical surface is provided with screw thread, diameter shaft part broad in the middle is provided with the button groove of strip, the center of button groove is provided with the square tube hole be communicated with the axially extending bore in torsion bar, the right-hand member of torsion bar axially extending bore is provided with screw thread, right-hand member external cylindrical surface is provided with jump ring annular groove.
The left end of torsion bar is threaded with the right-hand member of bonnet in driving end, the left end of transmission thin bar in spanner governor motion is threaded with the right-hand member of the tooth bar in driving end, the left end screwing screw rod of spanner governor motion and being threaded of torsion bar right-hand member, stop mechanism is fitted in by guard shield in the button groove on torsion bar.
Driving end described in technical scheme comprises protecgulum, bonnet, upper ejector lever pawl, lower ejector lever pawl, lower gear, lower bearing pin, tooth bar, a upper pin and cogs.Upper pin, one end of lower bearing pin respectively with bonnet under, upper rear pin shaft hole interference fit connects, protecgulum upper, lower front pin axis hole respectively and upper pin, the other end interference fits of lower bearing pin, cog be sleeved on upper pin and lower bearing pin successively with lower gear centre position for being rotationally connected, upper ejector lever pawl and lower ejector lever pawl are arranged on the rear projection on protecgulum on front projection and bonnet by its groove, and respectively with cog and lower gear be meshed, tooth bar is arranged on and cogs and between lower gear, and and cog and to be meshed with lower gear, rear tooth bar key on tooth bar is arranged in the rear featherway on bonnet, front tooth bar key on tooth bar is arranged in the front featherway on protecgulum, protecgulum is fixedly connected with by screw with bonnet.
The left and right sides end face of protecgulum described in technical scheme is a plane respectively, left and right end face is connected by laterally zygomorphic circular arc camber, be provided with from top to bottom in the leftmost side of protecgulum cross section be rectangle in projection before strip, a front rectangular through slot is from top to bottom provided with on the right side of front projection, the middle of protecgulum is provided with laterally zygomorphic two front round tooth races, and the circle centre position of two front round tooth races be respectively arranged with identical before pin shaft hole, before two, the middle of round tooth race is provided with for installing tooth bar groove before tooth bar, and be provided with in the middle of front tooth bar groove equipped with the feather key of tooth bar side before featherway, the upper left corner outside the front upper round tooth race of protecgulum and the position between the right cell wall of front rectangular through slot, be provided with front upper taper via-hole, the lower left corner outside the front lower round tooth race of protecgulum and the position between the right cell wall of front rectangular through slot, be provided with onesize front lower taper via-hole, the lower right corner outside the front upper round tooth race of protecgulum and the position between the upper cell wall of front tooth bar groove, be provided with front upper countersunk head through hole, the upper right corner outside the front lower round tooth race of protecgulum and the position between the lower cell wall of front tooth bar groove, be provided with onesize front lower countersunk head through hole.
The left and right sides end face of the bonnet described in technical scheme is a plane respectively, left and right end face is connected by the laterally zygomorphic radius of curvature circular arc camber equal with the radius of curvature of the circular arc camber on protecgulum and horizontal plane, the rear projection in strip that cross section is rectangle is provided with from top to bottom in the leftmost side of bonnet, rear projection is identical with the front projection cube structure on protecgulum, a rear rectangular through slot is from top to bottom provided with on the right side of rear projection, rear rectangular through slot is identical with front rectangular through slot structure, longitudinal plane of symmetry of rear rectangular through slot and front rectangular through slot is coplanar, the middle of bonnet arranges two laterally zygomorphic rear round tooth races, and the circle centre position of round tooth race arranges identical rear pin shaft hole respectively after two, the structure of the front pin shaft hole that two after two in round tooth race identical rear pin shaft holes are identical with two in two front round tooth races is identical, the pitch-row in two rear pin shaft holes is identical with the pitch-row of two front pin shaft holes, two round tooth race middles are provided with the rear tooth bar groove for installing tooth bar, the longitudinal plane of symmetry of rear tooth bar groove and front tooth bar groove is coplanar, and the rear featherway equipped with the feather key of tooth bar opposite side is vertically arranged with in the centre position of rear tooth bar groove, bonnet rear on the upper left corner outside round tooth race and the position between the right cell wall of rear rectangular through slot, upper tapped through hole after being provided with No. 1, the lower left corner outside the rear lower round tooth race of bonnet and the position between the right cell wall of rear rectangular through slot, lower tapped through hole after being provided with onesize No. 1, bonnet rear on the lower right corner outside round tooth race and the position between the upper cell wall of rear tooth bar groove, upper tapped through hole after being provided with No. 2, the upper right corner outside the rear lower round tooth race of bonnet and the position between the lower cell wall of rear tooth bar groove, lower tapped through hole after being provided with onesize No. 2, go up tapped through hole after No. 1 on bonnet and after No. 1, descend the front upper taper via-hole on the pitch-row of tapped through hole and protecgulum equal with the pitch-row of front lower taper via-hole, go up tapped through hole after No. 2 on bonnet and after No. 2, descend the front upper countersunk head through hole on the pitch-row of tapped through holes and protecgulum equal with the pitch-row of front lower countersunk head through hole, bonnet right-hand member has a flat boss, the thickness of boss is equal with the thickness at protecgulum low order end face place, the center of bonnet right side is provided with screwed hole, and longitudinal plane of symmetry of screwed hole axis of rotation and rear tooth bar groove is coplanar.
Upper ejector lever pawl described in technical scheme and lower ejector lever pawl are the plate armature part that structure is identical; The left surface of upper ejector lever pawl is arcwall face, lower surface is working face, upper surface is also set to plane, its right end face is provided with and the engaging tooth be meshed that cogs, the modulus of engaging tooth is equal with the modulus cogged, the centre position of the front and rear end of upper ejector lever pawl be provided with structure identical with the rear projection on bonnet and protecgulum on before projection to match the groove filled.
Spanner governor motion described in technical scheme includes transmission thin bar, spring core print, spring, spring compressor, spring lever, screws screw rod, spanner cover, jump ring and sliding sleeve.The left end of spring lever is threaded with the right-hand member of spring core print composition spring core, spring compressor is by spring core and be sleeved on pressure mounting of the spring on spring core in the axial step endoporus of transmission thin bar right-hand member, spring compressor is threaded with transmission thin bar right-hand member, the shaft shoulder of spring lever right-hand member contacts with the annular end face in the shoulder hole screwed on screw rod and connects, screw on the spring lever on the right side of screw rod and primary nut is installed, sliding sleeve is sleeved on the right-hand member of torsion bar for being slidably connected, jump ring is arranged in the jump ring annular groove on the torsion bar on the right side of sliding sleeve, sliding sleeve and spanner cover are together by a threaded connection.
Transmission thin bar described in technical scheme is a multidiameter, the external cylindrical surface of left end small diameter cylinders is provided with screw thread, right-hand member outer cylinder surface being provided with cross section is leg-of-mutton annular groove, transmission thin bar right-hand member is provided with axial step endoporus, and the right-hand member of ladder endoporus is provided with the internal thread equipped with spring compressor.Described spring core print is one section of short cylinder, and the center of spring core print right-hand member end face is provided with screwed hole.Described spring compressor is the ladder hollow stub shafts being provided with axially extending bore, reduced diameter section external cylindrical surface is provided with the screw thread equipped with transmission thin bar right-hand member, enlarged diameter section external cylindrical surface is provided with two parallel planes about centre of gyration symmetry.
Spring lever described in technical scheme is that a two ends external cylindrical surface arranges threaded multidiameter, and low order end cylinder is provided with two parallel planes about axis symmetry, the cylindrical diameter of interlude is greater than the cylindrical diameter of its both sides.Described screwing in screw rod is provided with ladder hole, and left end outer cylinder surface is provided with the double thread that pitch is 2.5mm, its pitch is equal with the pitch of the screwed hole of torsion bar right-hand member, screws on screw rod right-hand member external cylindrical surface and is provided with symmetrical pair of keys.
Stop mechanism described in technical scheme is made up of guard shield, locking key, spring leaf and stop slider.Locking key, spring leaf and stop slider adopt screw to be fixed together successively from top to bottom, and be arranged in the button groove on torsion bar, stop slider loads in the square tube hole at button groove center place, guard shield is sleeved on locking key, and on the large diameter external cylindrical surface of torsion bar adopting screw to be fixed on by guard shield around locking key.
Stop slider described in technical scheme is a cuboid formula structural member, the center of stop slider upper surface is provided with through screwed hole, the cross section that lower surface is provided with perpendicular to front/rear end is leg-of-mutton groove, the shape of cross section of this groove is identical with the shape of cross section of the leg-of-mutton annular groove in transmission thin bar, and the distance of adjacent two triangular grooves in stop slider is identical with the distance of adjacent two the leg-of-mutton annular grooves in transmission thin bar.
Compared with prior art the invention has the beneficial effects as follows:
1. adjustable wrench of the present invention is compared with common shfting wrench, the fussy degree of work can be reduced, when tightening workpiece clockwise, common shfting wrench is after being screwed to angle limit position clockwise, need to pull down spanner, then spanner returns counterclockwise, and then makes spanner pawl clamping work pieces continue to tighten clockwise again, and each working in reciprocating mode cycle needs wrench for dismounting each once and so forth.And adjustable wrench is in this working in reciprocating mode cycle, without wrench for dismounting, when tightening workpiece clockwise, press locking key, after spanner is screwed to angle limit position, unclamp locking key, directly turn back to correct position counterclockwise, press locking key again and continue clockwise impact wrench, and so forth.Loosen counterclockwise workpiece time, the course of work is similar.
2. adjustable wrench of the present invention has more versatility compared with ratchet spanner.Ratchet spanner needs specific wrench socket when twisting different workpiece, and working range is too single, does not possess versatility.And adjustable wrench according to the appearance and size of workpiece, can change the spacing of spanner pawl, with clamping work pieces, really achieve generalization.
3. in addition, use before spanner according in workpiece size adjustment during lower ejector lever pawl spacing, adjustable wrench of the present invention drives the screw rod that screws of coarse pitch to screw in the screwed hole of torsion bar right-hand member by rotary spanner cover, its axial componental movement will lower ejector lever pawl relative motion simultaneously in transmission, both taken full advantage of steep-pitch thread transmission fast, self-locking, stable advantage, substantially increase again the speed of the upper lower ejector lever pawl spacing of adjustment, will inevitably increase work efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the axonometric projection graph of adjustable wrench structure of the present invention composition;
Fig. 2 is the front view of adjustable wrench of the present invention;
Fig. 3 is the top view of adjustable wrench of the present invention;
Fig. 4 is the sectional view at adjustable wrench of the present invention B-B place in figure 3;
Fig. 5 is the partial enlarged view of adjustable wrench of the present invention A place and stop mechanism in the diagram;
The front view of the upper ejector lever pawl structure composition that Fig. 6 adopts for adjustable wrench of the present invention;
The top view of the upper ejector lever pawl structure composition that Fig. 7 adopts for adjustable wrench of the present invention;
The front view of the rack structure composition that Fig. 8 adopts for adjustable wrench of the present invention;
The right view of the rack structure composition that Fig. 9 adopts for adjustable wrench of the present invention;
The front view of the front-cover structure composition that Figure 10 adopts for adjustable wrench of the present invention;
The top view of the front-cover structure composition that Figure 11 adopts for adjustable wrench of the present invention;
The sectional view at the protecgulum that Figure 12 adopts for adjustable wrench of the present invention C-C place in fig. 11;
The front view of the rear cover structure composition that Figure 13 adopts for adjustable wrench of the present invention;
The top view of the rear cover structure composition that Figure 14 adopts for adjustable wrench of the present invention;
The sectional view at the bonnet that Figure 15 adopts for adjustable wrench of the present invention D-D place in fig. 14;
The top view of the torsion bar structure composition that Figure 16 adopts for adjustable wrench of the present invention;
The front view of the shift sleeve structure composition that Figure 17 adopts for adjustable wrench of the present invention;
The top view of the shift sleeve structure composition that Figure 18 adopts for adjustable wrench of the present invention;
The front view of the spanner nested structure composition that Figure 19 adopts for adjustable wrench of the present invention;
The left view of the spanner nested structure composition that Figure 20 adopts for adjustable wrench of the present invention;
The front view screwing screw-rod structure composition that Figure 21 adopts for adjustable wrench of the present invention;
The left view screwing screw-rod structure composition that Figure 22 adopts for adjustable wrench of the present invention;
The front view of the structure of the spring bar composition that Figure 23 adopts for adjustable wrench of the present invention;
The front view of the transmission thin bar structure composition that Figure 24 adopts for adjustable wrench of the present invention;
The front view of the shield structure composition that Figure 25 adopts for adjustable wrench of the present invention;
The top view of the shield structure composition that Figure 26 adopts for adjustable wrench of the present invention;
The front view of the stop slider structure composition that Figure 27 adopts for adjustable wrench of the present invention;
The top view of the stop slider structure composition that Figure 28 adopts for adjustable wrench of the present invention;
In figure: 1. driving end, 2. torsion bar, 3. spanner governor motion, 4. stop mechanism, 5. bonnet, 6. protecgulum, 7. soket head cap screw, 8. flat head screw, 9. upper ejector lever pawl, 10. lower ejector lever pawl, 11. lower gears, 12. lower bearing pins, 13. tooth bars, 14. transmission thin bars, 15. spring core prints, 16. springs, 17. spring compressors, 18. spring levers, 19. screw screw rod, 20. spanner covers, 21. primary nuts, 22. jump rings, 23. sliding sleeves, 24. locking keys, 25. spring leafs, 26. stop slider, 27. guard shields, 28. upper pins, 29. cog.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1 and Fig. 2, adjustable wrench comprises driving end 1, torsion bar 2, spanner governor motion 3 and stop mechanism 4.
Consult Fig. 3 and Fig. 4, described driving end 1 comprises protecgulum 6, bonnet 5, upper ejector lever pawl 9, lower ejector lever pawl 10, lower gear 11, lower bearing pin 12, tooth bar 13, upper pin 28 and cogs 29.
Consult Figure 10, Figure 11 and Figure 12, described protecgulum 6 left and right sides end face is a plane respectively, is to be connected by laterally zygomorphic transition arc curved surface between the end face of left and right.Be provided with from top to bottom in the leftmost side of protecgulum 6 cross section be rectangle in projection before strip.A front rectangular through slot is from top to bottom provided with on the right side of front projection.The middle of protecgulum 6 be provided with laterally zygomorphic two for installing round tooth race before gear, and the circle centre position of two front round tooth races be respectively arranged with identical before pin shaft hole, before two, the middle of round tooth race is provided with tooth bar groove before the left and right trend of sliding for tooth bar 13, and be provided with from left to right in the middle of front tooth bar groove equipped with the feather key of side on tooth bar 13 before featherway.The upper left corner outside the front upper round tooth race of protecgulum 6 and the position between the right cell wall of front rectangular through slot, be provided with front upper taper via-hole from back to front, the lower left corner outside the front lower round tooth race of protecgulum 6 and the position between the right cell wall of front rectangular through slot, be also provided with onesize front lower taper via-hole from back to front.The lower right corner outside the front upper round tooth race of protecgulum 6 and the position between the upper cell wall of front tooth bar groove, be provided with front upper countersunk head through hole from back to front, the upper right corner outside the front lower round tooth race of protecgulum 6 and the position between the lower cell wall of front tooth bar groove, be also provided with onesize front lower countersunk head through hole from back to front.
Consult Figure 13, Figure 14 and Figure 15, bonnet 5 left and right sides end face is a plane respectively, is to be connected with horizontal plane by laterally zygomorphic (radius of curvature is equal with the radius of curvature of the transition arc curved surface on protecgulum 6) transition arc curved surface between the end face of the left and right sides.Be provided with the rear projection in strip that cross section is rectangle from top to bottom in the leftmost side of bonnet 5, rear projection is identical with the front projection cube structure on protecgulum (6).Be provided with a rear rectangular through slot from top to bottom on the right side of rear projection, rear rectangular through slot is identical with front rectangular through slot structure, and longitudinal plane of symmetry of rear rectangular through slot and front rectangular through slot is coplanar.The middle of bonnet 5 arranges two laterally zygomorphic rear round tooth races for installing gear, and the circle centre position of round tooth race arranges identical rear pin shaft hole respectively after two, the structure of the front pin shaft hole that two after two in round tooth race identical rear pin shaft holes are identical with two in two front round tooth races is identical, and the pitch-row in two rear pin shaft holes is identical with the pitch-row of two front pin shaft holes; Two round tooth race middles are provided with the rear tooth bar groove of the left and right trend of sliding for tooth bar 13, the longitudinal plane of symmetry of rear tooth bar groove and front tooth bar groove is coplanar, and is provided with the rear featherway equipped with the feather key of opposite side on tooth bar from left to right in the centre position of rear rach slot.Bonnet 5 rear on the upper left corner outside round tooth race and the position between the right cell wall of rear rectangular through slot, upper tapped through hole after being provided with No. 1 from back to front, the lower left corner outside the rear lower round tooth race of bonnet 5 and the position between the right cell wall of rear rectangular through slot, lower tapped through hole after being also provided with onesize No. 1 from back to front.Bonnet 5 rear on the lower right corner outside round tooth race and the position between the upper cell wall of rear tooth bar groove, upper tapped through hole after being provided with No. 2 from back to front, the upper right corner outside the rear lower round tooth race of bonnet 5 and the position between the lower cell wall of rear tooth bar groove, lower tapped through hole after being also provided with onesize No. 2 from back to front; Front upper taper via-hole equal with the pitch-row of front lower taper via-hole (namely aligning between two in four holes) after No. 1 on bonnet 5 on the pitch-row of upper tapped through hole and tapped through hole lower after No. 1 and protecgulum 6, goes up the front upper countersunk head through hole equal with the pitch-row of front lower countersunk head through hole (being also namely align between two in four holes) on the pitch-row of tapped through hole and tapped through holes lower after No. 2 and protecgulum 6 after No. 2 on bonnet 5.Bonnet 5 right-hand member has a flat boss, and the thickness of boss is equal with the thickness at protecgulum 6 low order end face place, and the center of bonnet 5 right side is provided with screwed hole, and longitudinal plane of symmetry of screwed hole axis of rotation and rear tooth bar groove is coplanar.
Consult Fig. 6 and Fig. 7, described upper ejector lever pawl 9 and the identical plate armature part of lower ejector lever pawl 10.The left surface of upper ejector lever pawl 9 is arcwall face, lower surface is working face, upper surface is also set to plane, its right end face is provided with and 29 engaging tooths be meshed that cog, the centre position of upper ejector lever pawl 9 front and rear end be provided with structure identical with the rear projection on bonnet 5 and protecgulum 6 on before projection to match the groove filled.
Cogging 29 is master gears that structure is identical with lower gear 11, and its modulus is equal with the modulus of the engaging tooth in its right end face of lower ejector lever pawl 10 with upper ejector lever pawl 9.
Consult Fig. 8 and Fig. 9, tooth bar 13 is cuboid formula structural member, and the upper and lower end face of tooth bar 13 is all provided with the identical tooth that (namely cog 29 with lower gear 11) is meshed with master gear, its modulus and cog 29 equal with the modulus of the tooth of lower gear 11.Longitudinal line of symmetry of tooth bar 13 is provided with screwed hole.The centre position of the front and rear end of tooth bar 13 is provided with the identical forward and backward tooth bar key equipped mutually with the rear featherway on bonnet 5 with front featherway on protecgulum 6 of structure, forward and backward tooth bar key length and tooth bar 13 isometric.
Consult Fig. 4, upper pin 28, lower bearing pin 12 are the short cylindrical that structure is identical.One end of upper pin 28, lower bearing pin 12 is connected with the rear pin shaft hole interference fit on bonnet 5 respectively, cogs 29 to be set in upper pin 28 with lower gear 11 and to be connected for rotating (matched in clearance) with the centre position of lower bearing pin 12.Upper ejector lever pawl 9 and lower ejector lever pawl 10 are arranged on the rear projection on protecgulum 6 on front projection and bonnet 5 by its groove, and respectively with cog 29 and lower gear 11 be meshed.Tooth bar 13 is arranged on and cogs between 29 and lower gear 11, and 29 to be meshed with lower gear with cogging, and the rear tooth bar key on tooth bar 13 is arranged in the rear featherway on bonnet 5, and the front tooth bar key on tooth bar 13 is arranged in the front featherway on protecgulum 6.The upper and lower front pin shaft hole of protecgulum 6 respectively with the other end interference fits of upper pin 28 with lower bearing pin 12.Protecgulum 6 and bonnet 5 are linked into an integrated entity by 4 screws.
Consult Figure 16, described torsion bar 2 is the multidiameter class formation parts being provided with axially extending bore in a bar, and high order end external cylindrical surface is provided with the screw thread for being connected with driving end 1 right-hand member.Diameter shaft part broad in the middle is provided with the button groove of axial strip, and the center of button groove is provided with a square tube hole be communicated with the axially extending bore in torsion bar 2.It is the double thread of 2.5mm that the right-hand member of torsion bar 2 axially extending bore is provided with one section of pitch.Right-hand member external cylindrical surface is provided with jump ring annular groove.
Consult Fig. 4, described spanner governor motion 3 by transmission thin bar 14, spring core print 15, spring 16, spring compressor 17, spring lever 18, screw screw rod 19, spanner overlaps 20, primary nut 21, jump ring 22 and sliding sleeve 23 form.
Consult Figure 17 and Figure 18, sliding sleeve 23 is the stepped hollow shafts being provided with axially extending bore, and its reduced diameter section outer round surface is provided with screw thread, and its enlarged diameter section outer cylinder surface is provided with about centrosymmetric two parallel planes, is convenient to installation operation.
Consult Figure 19 and Figure 20, spanner cover 20 is the cylinder mode parts being provided with staged inner via hole, and the left end that spanner overlaps 20 inner via holes is provided with screw thread, and the right-hand member that spanner overlaps 20 inner via holes is provided with a pair symmetrical keyway.
Consult Figure 21 and Figure 22, screw in screw rod 19 and be provided with staged through hole, left end outer cylinder surface is provided with the double thread that pitch is 2.5mm.Screw on screw rod 19 right-hand member external cylindrical surface and be provided with symmetrical pair of keys.
Consult Figure 23, spring lever 18 is that a two ends external cylindrical surface arranges threaded multidiameter, () low order end cylinder is provided with on the right-hand member cylinder of right-hand member screw thread namely two parallel planes about centre of gyration axis symmetry, be convenient to install and fix, the cylindrical diameter of interlude is greater than the cylindrical diameter of its both sides.
Consult Fig. 4, spring compressor 17 is provided with the staged hollow stub shafts of axially extending bore in being, reduced diameter section external cylindrical surface is provided with the screw thread equipped with transmission thin bar 14 right-hand member, enlarged diameter section external cylindrical surface is provided with about centrosymmetric two parallel planes, be convenient to installation operation.Spring core print 15 is one section of short cylinder, and the center of spring core print 15 right-hand member end face is provided with screwed hole.
Consult Figure 24, transmission thin bar 14 is stepped shafts, and the outer surface of left end small diameter cylinders is provided with screw thread, and right-hand member outer cylinder surface to be provided with spacing be the cross section of 1.5mm is leg-of-mutton annular groove.Transmission thin bar 14 right-hand member is provided with axial step endoporus, and the right-hand member of ladder endoporus is provided with the internal thread equipped with the left end of spring compressor 17.
The left end of spring lever 18 and the screwed hole of spring core print 15 right-hand member are together by a threaded connection, composition spring core.Spring core and the spring 16 be sleeved on spring core are fitted in the axial step endoporus of the right-hand member of (being inserted in the axially extending bore of torsion bar 2) transmission thin bar 14 by spring compressor 17, spring compressor 17 is together by a threaded connection with the screwed hole of transmission thin bar 14 right-hand member, and by turning the adjustment that spring compressor 17 realizes spring 16 pretightning force.The shaft shoulder of spring lever 18 right-hand member is fitted on the annular end face that screws in screw rod 19 shoulder hole, and carrys out fastening spring bar 18 by the primary nut 21 turning spring lever 18 right-hand member and screw screw rod 19.Sliding sleeve 23 is sleeved on the right-hand member of torsion bar 2 for being slidably connected, and jump ring 22 is arranged in the jump ring annular groove on the torsion bar 2 on the right side of sliding sleeve 23, and to its axial location effect of sliding sleeve 23, sliding sleeve 23 and spanner overlap 20 and be together by a threaded connection.
Consult Fig. 4 and Fig. 5, described stop mechanism 4 is made up of guard shield 27, locking key 24, spring leaf 25 and stop slider 26.
Consult Figure 25 and Figure 26, guard shield 27 is little stalloy, and cross section is semicircle, and have rectangular through-hole in the center of guard shield 27, four angles of rectangular through-hole are fillet.Locking key 24 bottom is the rectangular sheet that a thickness is very little, the length of rectangular sheet and width are greater than length and the width of the rectangular through-hole on guard shield 27, be less than or equal to length and the width of the button groove on torsion bar 2, top is a little rectangular cam, and projection four angles are fillet.Spring leaf 25 is elastic bending thin slices that a width is less than the button well width on torsion bar 2.Its arc length is less than the length of the button groove on torsion bar 2.
Consult Figure 27 and Figure 28, stop slider 26 is cuboid block structure parts.As shown in figure 27, the center of stop slider 26 upper surface is provided with through screwed hole.The cross section that lower surface is provided with perpendicular to front/rear end is leg-of-mutton groove, the shape of cross section of this groove is identical with the leg-of-mutton annular groove shape of cross section in transmission thin bar 14, and the distance of adjacent two triangular grooves in stop slider 26 is identical with the distance of adjacent two the leg-of-mutton annular grooves in transmission thin bar 14.Locking key 24, spring leaf 25 and stop slider 26 three are fixed together by screw successively from top to bottom, and be arranged in the button groove on torsion bar 2, stop slider 26 loads in the square tube hole at button groove center place, guard shield 27 is sleeved on locking key 24, and on the large diameter external cylindrical surface of torsion bar 2 right-hand member adopting Screw to be fixed on by guard shield 27 around locking key 24, during work, triangular hill between adjacent two triangular grooves of stop slider 26 lower surface and the cross section in transmission thin bar 14 are that leg-of-mutton torus has been meshed the effect of locking positioning.
Consult Fig. 4, described driving end 1 is controlled part of the present invention, and its upper ejector lever pawl 9 and lower ejector lever pawl 10 are used to the vital part of clamping work pieces.Described torsion bar 2 is arm of forces of spanner, and its length adds operation torque, more laborsaving when making work, and the screwed hole of bonnet 5 right-hand member in the left end of torsion bar 2 and driving end 1 is together by a threaded connection.The screwed hole of tooth bar 13 right-hand member in the left end of the transmission thin bar 14 of described spanner governor motion 3 and driving end 1 is together by a threaded connection, and spot welding is locking.The threaded bore portions screwing screw rod 19 left end and torsion bar 2 right-hand member of spanner governor motion 3 screws.Sliding sleeve 23 at the shaft shoulder place of torsion bar 2 low order end, and is blocked by the jump ring 22 be stuck in torsion bar 2 right-hand member jump-ring slot by sliding sleeve 23 empty set of spanner governor motion 3.Described stop mechanism 4 is fitted in the button groove of torsion bar 2 right-hand member by guard shield 27.Guard shield 27 is fitted on the outer surface in the large footpath of torsion bar 2 right-hand member by Screw.
The operation principle of adjustable wrench of the present invention:
Consult Fig. 4, first according to the size of workpiece, rotary spanner cover 20, drive screws screw rod 19 and screws in the screwed hole of torsion bar 2 right-hand member, and the axially-movable screwing screw rod 19 is horizontally slipped being driven transmission thin bar 14 by spring core in the endoporus of torsion bar 2.The tooth bar 13 of driving end 1 inside owing to being connected with transmission thin bar 14, so tooth bar 13 also will move left and right in its keyway.Be meshed with tooth bar 13 cog 29, lower gear 11 all will rotate respectively, and then drives the relative motion of upper ejector lever the pawl 9 and lower ejector lever pawl 10 engaged with it, thus the clamping of realization to workpiece.After clamping work pieces, hand is while clenching spanner cover 20, length presses locking key 24, by locked for transmission thin bar 14, prevent the movement of the tooth bar 13 be connected with transmission thin bar 14, and then to engage with tooth bar 13 cog 29 and lower gear 11 all will be locked, admittedly the upper ejector lever pawl 9 be engaged with and lower ejector lever pawl 10 are fixed, thus realize the clamping function of upper ejector lever pawl 9 and lower ejector lever pawl 10.When tightening in workpiece fabrication, when spanner is screwed to behind angle limit position clockwise, unclamp locking key 24, directly return (now counterclockwise, because workpiece and upper ejector lever pawl 9 are not outside cylinder shapes with lower ejector lever pawl 10 contact portion, so when the working face of spanner pawl rotates to another working face from a certain working face of workpiece, the spacing of upper ejector lever pawl 9 and lower ejector lever pawl 10 will increase, cog 29 will turn clockwise and lower gear 11 will be rotated counterclockwise, tooth bar 13 and transmission thin bar 14 all will move to left, fix owing to screwing screw rod 19, the spring core be connected with it is also fixed, such transmission thin bar 14 can only pass through spring compressor 17 Compress Spring 16, to realize moving to left of transmission thin bar 14 and tooth bar 13).Due to the elastic force of spring 16 after spanner turns back to correct position counterclockwise, spring 16 will push away to the right transmission thin bar 14 and tooth bar 13 by spring compressor 17, drive cogs and 29 is rotated counterclockwise and turns clockwise with lower gear 11, and then reduce the spacing of upper ejector lever pawl 9 and lower ejector lever pawl 10, thus realize two spanner pawls to the clamping of the new working face of workpiece.Press locking key 24 again and continue clockwise impact wrench, and so forth.
Loosen counterclockwise workpiece time, the course of work is similar.
Claims (10)
1. an adjustable wrench, is characterized in that, described adjustable wrench by driving end (1), torsion bar (2), spanner governor motion (3) and stop mechanism (4) form;
Described torsion bar (2) is a multidiameter being provided with axially extending bore, high order end external cylindrical surface is provided with screw thread, diameter shaft part broad in the middle is provided with the button groove of strip, the center of button groove is provided with the square tube hole be communicated with the axially extending bore in torsion bar (2), the right-hand member of torsion bar (2) axially extending bore is provided with screw thread, right-hand member external cylindrical surface is provided with jump ring annular groove;
The left end of torsion bar (2) is threaded with the right-hand member of bonnet (5) in driving end (1), the left end of the transmission thin bar (14) in spanner governor motion (3) is threaded with the right-hand member of the tooth bar (13) in driving end (1), the left end screwing screw rod (19) of spanner governor motion (3) and being threaded of torsion bar (2) right-hand member, stop mechanism (4) is fitted in the button groove on torsion bar (2) by guard shield (27).
2. according to adjustable wrench according to claim 1, it is characterized in that, described driving end (1) comprises protecgulum (6), bonnet (5), upper ejector lever pawl (9), lower ejector lever pawl (10), lower gear (11), lower bearing pin (12), tooth bar (13), a upper pin (28) and cogs (29);
Upper pin (28), one end of lower bearing pin (12) respectively with bonnet (5) under, upper rear pin shaft hole interference fit connects, protecgulum (6) upper, lower front pin axis hole respectively with upper pin (28), the other end interference fits of lower bearing pin (12), cog (29) and lower gear (11) is sleeved on the centre position of upper pin (28) and lower bearing pin (12) successively for being rotationally connected, upper ejector lever pawl (9) and lower ejector lever pawl (10) are arranged on the front projection on protecgulum (6) and the rear projection on bonnet (5) by its groove, and respectively with to cog (29) and lower gear (11) is meshed, tooth bar (13) is arranged on and cogs (29) and between lower gear (11), and be meshed with lower gear (11) with cog (29), rear tooth bar key on tooth bar (13) is arranged in the rear featherway on bonnet (5), front tooth bar key on tooth bar (13) is arranged in the front featherway on protecgulum (6), protecgulum (6) is fixedly connected with by screw with bonnet (5).
3. according to adjustable wrench according to claim 2, it is characterized in that, the left and right sides end face of described protecgulum (6) is a plane respectively, left and right end face is connected by laterally zygomorphic circular arc camber, the front projection in strip that cross section is rectangle is provided with from top to bottom in the leftmost side of protecgulum (6), a front rectangular through slot is from top to bottom provided with on the right side of front projection, the middle of protecgulum (6) is provided with laterally zygomorphic two front round tooth races, and the circle centre position of two front round tooth races be respectively arranged with identical before pin shaft hole, before two, the middle of round tooth race is provided with the front tooth bar groove for installing tooth bar (13), and in the middle of front tooth bar groove, be provided with the front featherway equipped with the feather key of tooth bar (13) side, the upper left corner outside the front upper round tooth race of protecgulum (6) and the position between the right cell wall of front rectangular through slot, be provided with front upper taper via-hole, the lower left corner outside the front lower round tooth race of protecgulum (6) and the position between the right cell wall of front rectangular through slot, be provided with onesize front lower taper via-hole, the lower right corner outside the front upper round tooth race of protecgulum (6) and the position between the upper cell wall of front tooth bar groove, be provided with front upper countersunk head through hole, the upper right corner outside the front lower round tooth race of protecgulum (6) and the position between the lower cell wall of front tooth bar groove, be provided with onesize front lower countersunk head through hole.
4. according to the adjustable wrench described in claim 1 or 2, it is characterized in that, the left and right sides end face of described bonnet (5) is a plane respectively, left and right end face is connected by the laterally zygomorphic radius of curvature circular arc camber equal with the radius of curvature of the circular arc camber on protecgulum (6) and horizontal plane, the rear projection in strip that cross section is rectangle is provided with from top to bottom in the leftmost side of bonnet (5), rear projection is identical with the front projection cube structure on protecgulum (6), a rear rectangular through slot is from top to bottom provided with on the right side of rear projection, rear rectangular through slot is identical with front rectangular through slot structure, longitudinal plane of symmetry of rear rectangular through slot and front rectangular through slot is coplanar, the middle of bonnet (5) arranges two laterally zygomorphic rear round tooth races, and the circle centre position of round tooth race arranges identical rear pin shaft hole respectively after two, the structure of the front pin shaft hole that two after two in round tooth race identical rear pin shaft holes are identical with two in two front round tooth races is identical, the pitch-row in two rear pin shaft holes is identical with the pitch-row of two front pin shaft holes, two round tooth race middles are provided with the rear tooth bar groove for installing tooth bar (13), the longitudinal plane of symmetry of rear tooth bar groove and front tooth bar groove is coplanar, and the rear featherway equipped with the feather key of tooth bar opposite side is vertically arranged with in the centre position of rear tooth bar groove, the upper left corner outside the rear upper round tooth race of bonnet (5) and the position between the right cell wall of rear rectangular through slot, upper tapped through hole after being provided with No. 1, the lower left corner outside the rear lower round tooth race of bonnet (5) and the position between the right cell wall of rear rectangular through slot, lower tapped through hole after being provided with onesize No. 1, the lower right corner outside the rear upper round tooth race of bonnet (5) and the position between the upper cell wall of rear tooth bar groove, upper tapped through hole after being provided with No. 2, the upper right corner outside the rear lower round tooth race of bonnet (5) and the position between the lower cell wall of rear tooth bar groove, lower tapped through hole after being provided with onesize No. 2, go up tapped through hole after No. 1 on bonnet (5) and after No. 1, descend the front upper taper via-hole on the pitch-row of tapped through hole and protecgulum (6) equal with the pitch-row of front lower taper via-hole, go up tapped through hole after No. 2 on bonnet (5) and after No. 2, descend the front upper countersunk head through hole on the pitch-row of tapped through holes and protecgulum (6) equal with the pitch-row of front lower countersunk head through hole, bonnet (5) right-hand member has a flat boss, the thickness of boss is equal with the thickness at protecgulum (6) low order end face place, the center of bonnet (5) right side is provided with screwed hole, longitudinal plane of symmetry of screwed hole axis of rotation and rear tooth bar groove is coplanar.
5. according to adjustable wrench according to claim 2, it is characterized in that, described upper ejector lever pawl (9) and lower ejector lever pawl (10) are the identical plate armature part of structure; The left surface of upper ejector lever pawl (9) is arcwall face, lower surface is working face, upper surface is also set to plane, its right end face is provided with the engaging tooth be meshed with cog (29), the modulus of engaging tooth is equal with the modulus of cog (29), and the centre position of the front and rear end of upper ejector lever pawl (9) is provided with identical the matching the groove filled with the front projection on the rear projection on bonnet (5) and protecgulum (6) of structure.
6. according to adjustable wrench according to claim 1, it is characterized in that, described spanner governor motion (3) includes transmission thin bar (14), spring core print (15), spring (16), spring compressor (17), spring lever (18), screws screw rod (19), spanner cover (20), jump ring (22) and sliding sleeve (23);
The left end of spring lever (18) is threaded with the right-hand member of spring core print (15) composition spring core, spring core and the spring (16) be sleeved on spring core are fitted in the axial step endoporus of transmission thin bar (14) right-hand member by spring compressor (17), spring compressor (17) is threaded with transmission thin bar (14) right-hand member, the shaft shoulder of spring lever (18) right-hand member contacts with the annular end face in the shoulder hole screwed on screw rod (19) and connects, screw on the spring lever (18) on the right side of screw rod (19) and primary nut (21) is installed, sliding sleeve (23) is sleeved on the right-hand member of torsion bar (2) for being slidably connected, jump ring (22) is arranged in the jump ring annular groove on the torsion bar (2) on sliding sleeve (23) right side, sliding sleeve (23) and spanner cover (20) are together by a threaded connection.
7. according to adjustable wrench according to claim 6, it is characterized in that, described transmission thin bar (14) is a multidiameter, the external cylindrical surface of left end small diameter cylinders is provided with screw thread, right-hand member outer cylinder surface being provided with cross section is leg-of-mutton annular groove, transmission thin bar (14) right-hand member is provided with axial step endoporus, and the right-hand member of ladder endoporus is provided with the internal thread equipped with spring compressor (17);
Described spring core print (15) is one section of short cylinder, and the center of spring core print (15) right-hand member end face is provided with screwed hole;
Described spring compressor (17) is the ladder hollow stub shafts being provided with axially extending bore, reduced diameter section external cylindrical surface is provided with the screw thread equipped with transmission thin bar (14) right-hand member, enlarged diameter section external cylindrical surface is provided with two parallel planes about centre of gyration symmetry.
8. according to adjustable wrench according to claim 6, it is characterized in that, described spring lever (18) is that a two ends external cylindrical surface arranges threaded multidiameter, low order end cylinder is provided with two parallel planes about central axis symmetry, the cylindrical diameter of interlude is greater than the cylindrical diameter of its both sides;
Described screwing in screw rod (19) is provided with ladder hole, left end outer cylinder surface is provided with the double thread that pitch is 2.5mm, its pitch is equal with the pitch of the screwed hole of torsion bar (2) right-hand member, screws on screw rod (19) right-hand member external cylindrical surface and is provided with symmetrical pair of keys.
9. according to adjustable wrench according to claim 1, it is characterized in that, described stop mechanism (4) is made up of guard shield (27), locking key (24), spring leaf (25) and stop slider (26);
Locking key (24), spring leaf (25) and stop slider (26) adopt screw to be fixed together successively from top to bottom, and be arranged in the button groove on torsion bar (2), stop slider (26) loads in the square tube hole at button groove center place, guard shield (27) is sleeved on locking key (24), and adopts screw to be fixed on by guard shield (27) on locking key (24) torsion bar (2) large diameter external cylindrical surface around.
10. according to adjustable wrench according to claim 9, it is characterized in that, described stop slider (26) is a cuboid formula structural member, the center of stop slider (26) upper surface is provided with through screwed hole, the cross section that lower surface is provided with perpendicular to front/rear end is leg-of-mutton groove, the shape of cross section of this groove is identical with the shape of cross section of the leg-of-mutton annular groove in transmission thin bar (14), the distance of adjacent two triangular grooves in stop slider (26) is identical with the distance of adjacent two the leg-of-mutton annular grooves in transmission thin bar (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072138.2A CN103831763B (en) | 2014-03-02 | 2014-03-02 | Adjustable wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072138.2A CN103831763B (en) | 2014-03-02 | 2014-03-02 | Adjustable wrench |
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| Publication Number | Publication Date |
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| CN103831763A CN103831763A (en) | 2014-06-04 |
| CN103831763B true CN103831763B (en) | 2015-08-12 |
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| CN201410072138.2A Expired - Fee Related CN103831763B (en) | 2014-03-02 | 2014-03-02 | Adjustable wrench |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107215831A (en) * | 2017-07-14 | 2017-09-29 | 钦州学院 | Gear bottle cap unscrews device |
| CN108818376B (en) * | 2018-06-28 | 2023-08-29 | 榆林学院 | Cap-free screw wrench and use method |
| CN111203821A (en) * | 2020-02-27 | 2020-05-29 | 青岛博展智能科技有限公司 | Adjustable wrench for power equipment maintenance |
| CN117685925B (en) * | 2024-01-31 | 2024-05-14 | 钛玛科（北京）工业科技有限公司 | Roller passing parallelism detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223174Y (en) * | 1995-06-05 | 1996-03-27 | 唐晓军 | Wrench with self-adjusting jaw |
| CN2787380Y (en) * | 2005-03-31 | 2006-06-14 | 洪庆芳 | Adjustable wrench |
| CN201140370Y (en) * | 2008-01-19 | 2008-10-29 | 朱拥军 | Packaged quick push-and-pull spanner |
| CN201164980Y (en) * | 2008-02-03 | 2008-12-17 | 俞庆 | Adjustable spanner adjusting workholding jaw by grip strength |
| CN203726388U (en) * | 2014-03-02 | 2014-07-23 | 吉林大学 | Adjustable spanner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM271665U (en) * | 2005-03-03 | 2005-08-01 | Ching-Fang Hung | Adjustable wrench |
-
2014
- 2014-03-02 CN CN201410072138.2A patent/CN103831763B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223174Y (en) * | 1995-06-05 | 1996-03-27 | 唐晓军 | Wrench with self-adjusting jaw |
| CN2787380Y (en) * | 2005-03-31 | 2006-06-14 | 洪庆芳 | Adjustable wrench |
| CN201140370Y (en) * | 2008-01-19 | 2008-10-29 | 朱拥军 | Packaged quick push-and-pull spanner |
| CN201164980Y (en) * | 2008-02-03 | 2008-12-17 | 俞庆 | Adjustable spanner adjusting workholding jaw by grip strength |
| CN203726388U (en) * | 2014-03-02 | 2014-07-23 | 吉林大学 | Adjustable spanner |
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