CN108058121B - Big torque-force ratchet spanner - Google Patents
Big torque-force ratchet spanner Download PDFInfo
- Publication number
- CN108058121B CN108058121B CN201810133661.XA CN201810133661A CN108058121B CN 108058121 B CN108058121 B CN 108058121B CN 201810133661 A CN201810133661 A CN 201810133661A CN 108058121 B CN108058121 B CN 108058121B
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- China
- Prior art keywords
- bayonet lock
- protrusion
- actively
- driving member
- power transmission
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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
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a kind of big torque-force ratchet spanners, the spanner includes the ontology equipped with actively circle and handle, driving member actively is installed in circle, the axial limiting mechanism for limiting its axially opposing displacement is equipped between the active circle and driving member, the lateral wall of driving member, actively the inner hole wall of circle forms two nested cylindric power transmission faces, wherein the first power transmission face is equipped with bayonet lock slot, bayonet lock is rotatably mounted in bayonet lock slot, the side of bayonet lock is equipped with protrusion, the bayonet lock is connect with dynamic clamping head and quiet clamping head, bayonet lock rotates under the elastic force effect of dynamic clamping head and quiet clamping head, protrusion is driven to protrude from bayonet lock slot and be in contact with the second power transmission face, the outermost endpoint of protrusion is greater than the minimum range in the second power transmission face and bayonet lock central axes at a distance from bayonet lock central axes.Above-mentioned ratchet spanner devises new shaft clasping structure, to transmit for torsion, considerably increases the ability of transmitting torsion, while making the structure of entire ratchet spanner simpler, compact, more convenient to use.
Description
Technical field
The present invention relates to a kind of tools for fastening, dismantling, more particularly to a kind of ratchet spanner.
Background technique
Ratchet spanner is a kind of manual bolts tightening tool, and this spanner need to swing certain angle, can tighten and unclamp spiral shell
Nail or nut.Equipped with right two struts of a first from left inside its Wrench head.Strut is equipped with one or more support tooth, when tightening
When screw or nut, tooth is supportted tightly against hook tooth.When handle is turned back to opposite direction, strut is sliding in the inclined-plane of hook tooth
Out, thus screw or nut will not follow reversion.If necessary to unclamp screw or nut, reversing piece only need to be stirred, is changed to another
A strut.
But when the power of rotating ratchet spanner is larger, relies solely on limited support tooth and resists one or several hook tooths,
So that hook tooth stress is excessive, easily skid, or even support tooth or ratchet damage.
In face of this problem, the prior art is often by improvement spanner ratchet and supports the material of steel used in tooth, increases and pull
Thickness, the ratchet of hand shell become larger, increase support number of teeth amount to solve.But which results in the costs of spanner to greatly improve；And it pulls
Hand is also increasingly heavier.
Summary of the invention
The purpose of the present invention is to propose to a kind of big torque-force ratchet spanners.
Spanner of the invention includes the ontology equipped with actively circle and handle, actively driving member is equipped in circle, in the master
The axial limiting mechanism for limiting its axially opposing displacement is equipped between moving-coil and driving member, key is the outside of the driving member
The inner hole wall of wall, actively circle forms two nested cylindric power transmission faces, wherein the first power transmission face is equipped with bayonet lock slot, bayonet lock slot
It is inside rotatably mounted with bayonet lock, the side of bayonet lock is equipped with protrusion, and the bayonet lock is connect with dynamic clamping head and quiet clamping head, and bayonet lock is multiple in elasticity
The lower rotation of elastic force effect of position part, drives protrusion to protrude from bayonet lock slot and be in contact with the second power transmission face, the protrusion it is outermost
Side point is greater than the minimum range in the second power transmission face and bayonet lock central axes at a distance from bayonet lock central axes.
The working principle of above-mentioned spanner is as follows:
Driving member is movably installed in actively circle, and is prevented in the autonomous moving-coil of driving member axially by axial limiting mechanism
It moves and deviates from and actively enclose.Driving member is used to cooperate with the connector wait tighten or unscrew, so that the rotation torsion of handle be passed
It is delivered on connector.Dynamic clamping head and quiet clamping head keeps the bullet for applying predetermined direction to the bayonet lock installed in the first power transmission face bayonet lock slot
Power, the elastic force rotate bayonet lock to predetermined direction, and when bayonet lock rotates, protrusion is rotated synchronously with bayonet lock, and such protrusion is gradually
Be exposed to bayonet lock slot and with the second power transmission face contact, since the outermost endpoint of protrusion is greater than second at a distance from bayonet lock central axes
The minimum range in power transmission face and bayonet lock central axes, therefore protrusion is stopped and can not be continued to rotate by the second power transmission face.In addition, by
It is unlikely to be and is completely smooth in the surface of components, therefore due to contacting with each other and there are one between the second power transmission face and protrusion
Fixed frictional force.
During the work time, when the direction phase that the rotation direction of handle is rotated under the action of elastic reset part with bayonet lock
Meanwhile the second frictional force between power transmission face and protrusion can push protrusion to along the direction rotated originally, so that bayonet lock is convex
Pressure between portion and the second power transmission face is increasing, and frictional force between the two is also just increasing, so that bayonet lock is more next
The side-walls of bayonet lock slot are more pressed on, bayonet lock and driving member form a metastable structure under the effect of the pressure, in this way,
Above-mentioned frictional force will drive driving member rotation by bayonet lock, realize handle (pass through actively enclose) and driving member (and and driving member
Connector joined together, such as nut) between torsion transmitting.
When handle rotates backward, the frictional force between the second power transmission face and protrusion will drive bayonet lock and overcome dynamic clamping head and quiet clamping head
Elastic force, and with the second power transmission face synchronous backward rotate, with rotating backward for bayonet lock, protrusion can be gradually to bayonet lock slot direction
It is mobile, so that the pressure between the second power transmission face also can be smaller and smaller, in this way, the frictional force between protrusion and the second power transmission face
Also smaller and smaller, final protrusion is slided on the second power transmission face, and such driving member and the connector cooperated with driving member would not
As handle rotates backward.Handle is swung repeatedly within the scope of certain angle, can pass through the second above-mentioned power transmission face and protrusion
Cooperation drive driving member to one-directionally rotate, complete the dismounting of connector.
Compared to the conventional spanner of ratchet engagement mode, above-mentioned spanner transmitting torsion principle it is entirely different, be according to
Rely in the compression of protrusion and the second power transmission face, in this way its torsion upper limit that can bear be no longer dependent on ratchet contact area,
Structural strength, and it is to rely on the integral strength of bayonet lock and two power transmission faces, therefore be easy to improve its upper limit for transmitting torque.
In the work of above-mentioned spanner, with the second power transmission face contact, torsion may be uniformly distributed in all convex for the protrusion of all bayonet locks
In portion, producer can according to need to increase the quantity of bayonet lock, it might even be possible to and it is distributed in bayonet lock on entire first power transmission face, with
Obtain bigger torsion delivery threshold.
Moreover, because bayonet lock is set on the first power transmission face, length can be equal to or slightly less than power transmission face
Width, entire side and the second power transmission face of protrusion can contact with each other, it is ensured that have enough frictions between the two
Power, and the pressure between protrusion and the second power transmission face does not converge, and it is dispersed in the side of entire protrusion, thus
Reduce the requirement to the intensity of protrusion.
Above-mentioned dynamic clamping head and quiet clamping head can have a variety of structures, such as says and install a little spring, bullet in each bayonet lock slot
The both ends of spring are connect with the inner sidewall of bayonet lock and bayonet lock slot respectively, rotate bayonet lock using the elastic force of spring, realize protrusion and the
The contact in two power transmission faces.But above-mentioned dynamic clamping head and quiet clamping head installation is complex, occupies more space, so that spanner
Structure can not be made small and exquisite, compact.For this problem, the present invention proposes following proposal with regard to dynamic clamping head and quiet clamping head: the bayonet lock
It is equipped with spring and presses position, the dynamic clamping head and quiet clamping head is elastic ring, and the elastic ring is placed on or is resisted against the spring of all bayonet locks
It presses at position；The elastic ring is eccentric in the central axes of bayonet lock by the active force that spring pressure position is applied to bayonet lock, so that bayonet lock exists
The lower rotation of the elastic force effect of dynamic clamping head and quiet clamping head.
Above-mentioned elastic ring can be formed by connecting using helical spring head and the tail, and such as wound spring, elasticity also can be directly used
Rubber ring, as long as elastic ring has the elastic force for shrinking or expanding.By driving member and bayonet lock after the assembly is completed, will be elastic
Snare elastic ring at the spring pressure position for being perhaps stuck in all bayonet locks applies to bayonet lock to be tended to or back on elastic circle center
Elastic acting force, spring pressure position decompose the elastic acting force, generate the active force for promoting bayonet lock to rotate to scheduled direction, into
And make the protrusion of bayonet lock after bayonet lock rotation with the second power transmission face contact, it is ensured that driving member can be in the second power transmission face, protrusion
Under cooperation, rotated with synchronous forward is actively enclosed；And when the reversion of the handle of spanner, the reverse friction power push card in the second power transmission face
Pin rotates backward, so that protrusion is rotated to bayonet lock slot direction, the contact area with the second power transmission face is gradually decreased, finally from second
Power transmission face slips over, and avoids driving member and rotates backward with the connector of driving member cooperation with active circle.Using single in above scheme
A elastic ring realizes the elastic resets of all bayonet locks, can greatly simplify structure, the assembly of convenient wrench components, reduction accounts for
With space, allows entire spanner structure to be made small and exquisite, compact, facilitate operation.
Further, the bullet of bayonet lock, the power transmission face or bayonet lock is even detached to prevent elastic ring from axial float occurs
The fixing groove for limiting elastic ring axial movement is equipped at spring pressure position, elastic ring snaps onto fixing groove, that is, can avoid axial
It is mobile.
Further, the bayonet lock is cambered surface back to the side in protrusion, and the bayonet lock slot is equipped with and the cambered surface phase
The arcuate structure of adaptation.Pass through cambered surface and arcuate structure to cooperate, it is possible to reduce bayonet lock suffered resistance during rotation.
Further, the second power transmission face is evenly equipped with ratchet, and the extending direction of ratchet is parallel to the central axes of actively circle,
The protrusion is the latch cooperated with the ratchet.The cooperation principle of above-mentioned ratchet and latch is as follows: dynamic clamping head and quiet clamping head holding pair
Bayonet lock applies the elastic force of predetermined direction, which pushes bayonet lock rotation, so that latch and ratchet engagement, such driving member can only be
One-directional rotation in actively enclosing；When handle rotates backward, the guiding surface of ratchet applies active force to latch, so that latch overcomes
The elastic force of dynamic clamping head and quiet clamping head and release and engaged with ratchet, latch slips on the back of tooth of ratchet, such driving member and with transmission
The connector of part cooperation will not be rotated backward with handle.By using the fit system of ratchet and latch, can reduce to convex
The requirement on machining accuracy of fit clearance between portion, the second power transmission face avoids part bayonet lock caused by due to machining accuracy is short of
Protrusion can not the second power transmission face of jam-packed, cause driving member and actively circle between unbalance stress the problem of.
Further, the first power transmission face is the rough surface or annular knurl face or stripe surface after polishing, therefore second passes
Due to contacting with each other and there are certain frictional force between power face and protrusion.
Further, the axial limiting mechanism is circlip, and described two power transmission faces are equipped with the corresponding jump-ring slot in position, institute
Circlip is stated to be installed in jump-ring slot.Axial movement of the driving member in active circle is limited using circlip, and there is compact structure, peace
Fill convenient advantage.
Further, the driving member center is quincuncial through-hole or the positive Polyhedral column for protruding from wrenching surface
Body.The front and back sides of the driving member of quincunx through-hole can cooperate with connector, in this way when needing reversely to turn connector, only
Needing to overturn spanner can be realized the reversed torsion transmitting of driving member.The positive Polyhedral column of wrenching surface is protruded from driving member
Body can be protruded into and is fitted in sleeve, be cooperated by sleeve and connector.
Further, the active circle is two and is respectively arranged at the both ends of the handle, with two active circles
The installation direction of the driving member and bayonet lock positioned there between, dynamic clamping head and quiet clamping head and axial limiting mechanism that match on the contrary,
When needing reversely to turn connector, it is only necessary to turn spanner, be cooperated using another driving member and connector, be can be realized reversed
Torsion transmitting.
Spanner of the invention considerably increases the ability of transmitting torsion by structure novel, unique torsion transferring structure,
Also make the structure of entire spanner more simple, compact simultaneously, there is good practicability and commercial competitiveness.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the spanner of embodiment 1.
Fig. 2 is the schematic perspective view of bayonet lock in embodiment 1.
Fig. 3 is the bottom view of bayonet lock in embodiment 1.
Fig. 4 is the structural schematic diagram of driving member in embodiment 1.
Fig. 5 is driving member in embodiment 1, bayonet lock, actively the cooperation schematic diagram (cross-sectional view) of circle and elastic ring.
Fig. 6 is driving member in embodiment 1, bayonet lock, the cooperation schematic diagram actively enclosed.
Fig. 7,8 are bayonet lock and the cooperation schematic illustration actively enclosed in embodiment 1.
Fig. 9 is the schematic perspective view of bayonet lock in embodiment 2.
Figure 10 is the bottom view of bayonet lock in embodiment 2.
Figure 11 is driving member in embodiment 2, bayonet lock, the cooperation schematic diagram actively enclosed.
Figure 12,13 are bayonet lock and the cooperation schematic illustration actively enclosed in embodiment 2.
Figure 14 is the decomposition texture schematic diagram of the spanner of embodiment 3.
Figure 15 is driving member in embodiment 3, bayonet lock, the cooperation schematic diagram actively enclosed.
Figure 16 is driving member in embodiment 3, bayonet lock, actively the cooperation schematic diagram (cross-sectional view) of circle and elastic ring.
Figure 17,18 be two kinds of spanners structural schematic diagram.
Attached drawing mark: 1, it actively encloses；11, inner hole wall；12, ratchet；2, handle；3, driving member；31, through-hole；32, bayonet lock
Slot；33, fixing groove；34, cylinder；4, bayonet lock；41, protrusion；42, cambered surface；43, spring presses position；44, load-carrying surface；5, elastic ring；6,
Circlip；7, jump-ring slot.
Specific embodiment
It is for example related each to a specific embodiment of the invention by the description to embodiment below against attached drawing
The shape of component, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle etc. are made into one
The detailed description of step.
Embodiment 1:
As shown in Figure 1, the spanner of the present embodiment includes equipped with the ontology for actively enclosing 1 and handle 2, it is round logical for actively enclosing 1
Pore structure, actively enclose 1 only one and be located at handle 2 one end end, driving member 3, which is movably installed in, actively to be enclosed in 1, and is passed through
Axial limiting mechanism is deviate from actively enclose 1 preventing axial movement in the autonomous moving-coil 1 of driving member 3, and the axial direction in the present embodiment limits
Position mechanism is realized using the structure of the circlip 6 being mounted in jump-ring slot 7 hereafter as illustrated in figures 4-5；As shown in figure 4,
The center of driving member 3 is the through-hole 31 of plum blossom tee section, to be used to cooperate with connectors such as bolts, thus by the rotation of handle 2
Torsion is transmitted on connector.
As shown in Fig. 1,4,5,6, the lateral wall of driving member 3 actively encloses 1 inner hole wall 11 and forms two nested cylinders
The power transmission face of shape；In the present embodiment, the lateral wall of driving member 3 is evenly equipped with multiple be parallel to actively as the first power transmission face
The axial bayonet lock slot 32 of circle 1 is equipped with 12 bayonet lock slots 32, certainly, which can voluntarily increase as needed in the present embodiment altogether
Subtract.The inner hole wall 11 for actively enclosing 1 is used as the second power transmission face；Bayonet lock 4 is rotatably mounted in bayonet lock slot 32, as shown in Figure 2,3,
The side of bayonet lock 4 at the crest line of side be equipped with protrusion protrusion 41, the extending direction of protrusion 41 be parallel to actively enclose 1 axial direction,
Protrusion 41 toward the side for the inner hole wall 11 for actively enclosing 1 be cambered surface；Bayonet lock 4 is connect with dynamic clamping head and quiet clamping head, and the present embodiment is hit by a bullet
Property return unit be elastic ring 5, bayonet lock 4 dynamic clamping head and quiet clamping head elastic force effect under rotate, drive protrusion 41 protrude from bayonet lock slot 32
And it is in contact with the inner hole wall 11 for actively enclosing 1；The outermost endpoint of protrusion 41 is greater than at a distance from 4 central axes of bayonet lock actively encloses 1
Inner hole wall 11 at a distance from 4 central axes of bayonet lock.
To improve protrusion 41 and actively enclosing frictional force between 1 inner hole wall 11, protrusion 41 and/or actively enclose 1 inner hole
The surface of wall 11 can be the rough surface after polishing, or annular knurl or striped etc., since basic torsion transmits original
Reason is all consistent, therefore is no longer analyzed one by one.
Bayonet lock 4 is cambered surface 42 back to the side in protrusion 41, and bayonet lock slot 32 is equipped with arc knot compatible with cambered surface 42
Structure passes through cambered surface 42 and arcuate structure and cooperates, it is possible to reduce the suffered resistance during rotation of bayonet lock 4, and can be to card
The rotation of pin 4 forms good limit.
As shown in Fig. 2,3,7,8, the end of bayonet lock 4 is equipped with step-like spring and presses position 43, and spring pressure position 43, which is equipped with, holds
Power face 44, in the present embodiment, load-carrying surface 44 are parallel to the axial plane of bayonet lock 4；Dynamic clamping head and quiet clamping head is elastic ring 5, elasticity
Circle 5 is located at outside the circle that all bayonet locks 4 are surrounded, and elastic ring 5 is placed on the load-carrying surface 44 of the spring pressure position 43 of all bayonet locks 4 simultaneously
Place.
As shown in fig. 7, elastic ring 5 is shunk under the action of own resilient, elastic ring 5 applies to the load-carrying surface 44 of bayonet lock 4
It is intended to the elastic acting force of 5 center of elastic ring (actively enclosing 1 central axes), under the decomposition of load-carrying surface 44, above-mentioned elasticity
Some is converted into bayonet lock 4 is pushed to rotate clockwise active force (as shown in dotted arrow in Fig. 7) active force, makes bayonet lock 4
Protrusion 41 be gradually exposed and be in contact in bayonet lock slot 32 with the inner hole wall 11 for actively enclosing 1, be equivalent to by driving member 3, bayonet lock 4
The diameter of composed structural member is increasing and expansion situation is presented, the lateral surface of the final structural member with actively enclose 1 it is interior
Hole wall pushes against, similar to seizing for transmission shaft.
When handle 2 rotates clockwise (direction as shown in solid arrow in Fig. 7), 1 inner hole wall 11 and protrusion are actively enclosed
Frictional force between 41 can be by protrusion 41 to along the direction rotated originally (i.e. clockwise, as shown in dotted arrow in Fig. 7)
It pushes, so that the pressure between the protrusion 41 of bayonet lock 4 and the inner hole wall 11 for actively enclosing 1 is increasing, frictional force between the two
Also just increasing, so that bayonet lock 4 to be increasingly pressed on to the side-walls of bayonet lock slot 32, the work of bayonet lock 4 and driving member in pressure
With one metastable structure of lower formation, in this way, above-mentioned frictional force and pressure will drive driving member 3 to rotate by bayonet lock 4,
Realize the torsion transmitting between handle 2 (by actively enclosing 1) and driving member 3 (and with connector joined together by driving member 3).
As shown in figure 8, when handle 2 is rotated backward and (rotated counterclockwise) (direction as shown in solid arrow in Fig. 7), it is main
Frictional force between the inner hole wall 11 and protrusion 41 of moving-coil 1 will drive the elastic force that bayonet lock 4 overcomes elastic ring 5, and with actively enclosing 1
11 synchronous backward of inner hole wall rotate (as represented by dashed arrows in fig. 8), elastic ring 5 is expanded under the active force of bayonet lock 4 at this time
And put aside elastic potential energy.With rotating backward for bayonet lock 4, protrusion 41 can be gradually mobile to 32 direction of bayonet lock slot, thus with actively
Pressure between the inner hole wall 11 of circle 1 also can be smaller and smaller, in this way, the friction between protrusion 41 and the inner hole wall 11 for actively enclosing 1
Power is also smaller and smaller, and final protrusion 41 is slided on the inner hole wall 11 for actively enclosing 1, such driving member 3 and with driving member 3 cooperate
Connector would not be rotated backward with handle 2, be equivalent to the diameter of the structural member as composed by driving member 3, bayonet lock 4 increasingly
Small and present and shrink situation, the lateral surface of the final structural member is no longer pushed against with the inner hole wall for actively enclosing 1, and releasing seizes.Handle 2
It swings, can be driven by the cooperation of the inner hole wall 11 of above-mentioned active circle 1 and protrusion 41 repeatedly within the scope of certain angle
Driving member 3 one-directionally rotates, and completes the dismounting of connector.
It is of course also possible to which protrusion 41 is set at another crest line of bayonet lock 4, and change the direction of load-carrying surface 44, from
And change driving member 3 in the rotation direction actively enclosed in 1, the cooperation of protrusion 41 and the inner hole wall 11, elastic ring 5 that actively enclose 1 and
Above-mentioned principle is identical, and details are not described herein again.
For traditional ratchet spanner, the limiting value of transmitting torsion is the intensity by the position of engagement of ratchet
, in order to improve the intensity of the position of engagement it is necessary to improving the material of ratchet (needing to improve cost), or increase the tooth tip of ratchet
The depth of engagement, but will increase bar stroke when spanner reversion again in this way, reduce efficiency.In the present embodiment, do not having installation card
Before pin 4, the outer diameter of driving member 3 is a, and the internal diameter for actively enclosing 1 is that (a, b can be according to specific processing requests come value by a+b.B is
After bayonet lock is installed, the distance between bayonet lock protrusion outermost endpoint and the first power transmission face), at this point, driving member 3 can actively enclose 1
Interior flexible rotating；After loading onto bayonet lock 4 and elastic ring 5, under the elastic force effect of elastic ring 5,41 side of protrusion of bayonet lock 4 is stuck up slightly
Rise can resist actively enclose 1 inner hole wall 11, that is to say, that in the handoff procedure of spanner forward and reverse, bayonet lock 4 it is convex
The moving distance in portion 41 is no more than b, therefore bar stroke of the bayonet lock 4 when spanner 2 inverts is very small, can stop in spanner 2
After reversion, realize that driving member 3 is transmitted with the reconnect and torsion for actively enclosing 1 rapidly, which improves the efficiency of spanner.
The elastic reset for realizing all bayonet locks 4 in above scheme simultaneously using single elastic ring 5, can greatly simplify knot
Structure, the assembly of convenient wrench components reduce occupied space, allow entire spanner structure to be made small and exquisite, compact, facilitate behaviour
Make.Certainly, the compactness of position 43 is pressed in order to improve elastic ring 5 and spring, above-mentioned load-carrying surface 44 is preferably changed to actively to enclose 1
Central axes be the center of circle cambered surface, after protrusion 41 is combined with the inner hole wall 11 for actively enclosing 1, cambered surface can be with the perfection of elastic ring 5
Fitting, thus guarantee the stability of 41 position of protrusion, but the difficulty of processing of such cambered surface is larger, uses the load-carrying surface 44 of plane
Corresponding function can be still completed, it is plane or cambered surface that producer can select setting load-carrying surface 44 according to their needs.On
Stating elastic ring 5 can be formed by connecting using helical spring head and the tail, elastic rubber ring also can be directly used, as long as elastic ring 5 has
There are enough contraction elasticities, the transmitting of torsion is not rely on the elastic force of elastic ring 5, therefore to the bullet of elastic ring 5
Force request is not high, and using common wound spring, details are not described herein again.
As shown in figure 4, being even detached from bayonet lock 4 to prevent elastic ring 5 from axial float occurs, the lateral surface of driving member 3 is equipped with
For limiting the fixing groove 33 of the axial movement of elastic ring 5, which intersects with bayonet lock slot 32, and elastic ring 5 snaps onto fixation
In slot 33, axial movement is avoided, while the elastic reset function to bayonet lock 4 will not be influenced.
In the present embodiment, axial limiting mechanism uses relatively conventional circlip 6, and it is corresponding that two power transmission faces are equipped with position
Jump-ring slot 7, circlip 6 are installed in jump-ring slot 7.Driving member 3 is limited using circlip 6 in the axial movement actively enclosed in 1, is had
Compact structure, advantage easy for installation.
Compared to the conventional spanner of ratchet engagement mode, above-mentioned spanner transmitting torsion principle it is entirely different, be according to
Rely in the compression of protrusion 41 and the inner hole wall 11 for actively enclosing 1, its torsion upper limit that can bear in this way is no longer dependent on ratchet
Contact area, structural strength, and it is to rely on the integral strength of bayonet lock 4 and two power transmission faces, therefore be easy to improve its transmitting
The upper limit of torque.In the work of above-mentioned spanner, the protrusion 41 of all bayonet locks 4 is contacted with the inner hole wall 11 for actively enclosing 1, torsion
It may be uniformly distributed on all protrusions 41, producer can according to need to increase the quantity of bayonet lock 4, it might even be possible to make bayonet lock
4 are distributed on the periphery wall of entire driving member 3, to obtain bigger torsion delivery threshold.
Moreover, because bayonet lock 4 is set on the periphery wall of driving member 3, length can be slightly less than driving member 3
The width of periphery wall, the entire side of protrusion 41 can contact with each other with the inner hole wall 11 for actively enclosing 1, it is ensured that the two it
Between there is enough frictional force, and the pressure between protrusion 41 and the inner hole wall 11 for actively enclosing 1 does not converge, but
It is scattered in the side of entire protrusion 41, to reduce the requirement of the intensity to protrusion 41.
In the present embodiment, 1 is enclosed actively as through-hole structure, the front and back sides of driving member 3 can cooperate with connector, in this way
When needing reversely to turn connector, it is only necessary to which overturning spanner can be realized the reversed torsion transmitting of driving member 3.
Embodiment 2:
Unlike the first embodiment, as shown in Fig. 9,10,11,12,13, in the present embodiment, 1 inner hole wall 11 is actively enclosed
Be evenly equipped with ratchet 12, the extending direction of ratchet 12 be parallel to actively enclose 1 central axes, protrusion two sides are edge of a knife shape, to make convex
Portion 41 is formed as the reciprocal latch structure cooperated with ratchet 12.
The cooperation principle of ratchet 12 and protrusion 41 (i.e. latch, similarly hereinafter) is similar to Example 1, specific as follows:
As shown in figure 12, elastic ring 5 is shunk under the action of own resilient, and elastic ring 5 applies to the load-carrying surface 44 of bayonet lock 4
It is intended to the elastic acting force of 5 center of elastic ring (actively enclosing 1 central axes), bayonet lock 4 is pushed to rotate clockwise (in such as Fig. 7
Shown in dotted arrow), so that the protrusion 41 of bayonet lock 4 is exposed to bayonet lock slot 32 and is engaged with ratchet 12, it is clockwise in handle 2 in this way
When rotation (direction as shown in solid arrow in Fig. 7), driving member 3 can be under the cooperation of ratchet 12, protrusion 41, with actively enclosing 1
And handle 2 is synchronized and is rotated clockwise.
As shown in figure 13, (the side as shown in solid arrow in Fig. 7 when the handle of spanner 2 inverts (rotating counterclockwise)
To), the reaction force of ratchet 12 pushes bayonet lock 4 to rotate backward (as represented by dashed arrows in fig. 8), so that protrusion 41 synchronizes up time
Needle rotation, elastic ring 5 is expanded under the active force of bayonet lock 4 and puts aside elastic potential energy at this time, the protrusion 41 of bayonet lock 4 gradually decrease with
The contact area of ratchet 12, it is final to be slipped over close to being retracted in bayonet lock slot 32 from the back of tooth of ratchet 12, avoid driving member 3 and with
Driving member 3 cooperate connector (such as nut) with actively enclose 1 and handle 2 rotate counterclockwise.In protrusion 41 from the back of tooth of ratchet 12
After slipping over, due to protrusion 41 without ratchet 12 against support, the elastic force of elastic ring 5 makes bayonet lock 4 rotate clockwise and weigh again
Newly engage protrusion 41 with next ratchet 12.
By using the fit system of ratchet 12 and protrusion 41, can reduce to protrusion 41, actively enclose 1 inner hole wall 11
Between fit clearance requirement on machining accuracy, avoid the part being likely to occur in embodiment 1 caused by due to machining accuracy is short of
The protrusion 41 of bayonet lock 4 can not jam-packed actively enclose 1 inner hole wall 11, lead to driving member 3 and actively enclose asking for unbalance stress between 1
Topic.
It is of course also possible to which protrusion 41 is set at another crest line of bayonet lock 4, and change the inclined direction of ratchet 12,
To change driving member 3 in the rotation direction actively enclosed in 1, the cooperation and above-mentioned principle phase of protrusion 41 and ratchet 12, elastic ring 5
Together, details are not described herein again.
The ratchet of traditional ratchet spanner is typically all monodentate or bi-tooth gearing, is limited by single ratchet intensity, it is difficult to
The upper limit of transmitting torque is improved, and all latches in the present embodiment can be engaged with ratchet 12, such torsion can be uniform
It is distributed on all latches, producer can according to need to increase the quantity of bayonet lock 4, and in the present embodiment, bayonet lock 4 has multiple
And uniformly at intervals on the lateral surface of entire driving member 3, therefore compared to for traditional ratchet spanner of monodentate or bi-tooth gearing,
The active force that single ratchet 12 or latch are undertaken in the present embodiment is less, reduces to actively enclosing 1, ratchet 12 and latch itself
The requirement of the strength of materials.Moreover, because bayonet lock 4 and ratchet 11 are set on power transmission face, length is close to power transmission face
Width, after bayonet lock 4 is engaged with ratchet 12, the entire side of latch can contact with each other with the entire side of ratchet 12, because
This contact area is bigger, further reduced the requirement to 1, ratchet 12 and latch own material intensity is actively enclosed.
Embodiment 3:
As different from Example 2, as shown in Figure 14,15,16, in the present embodiment, 1 11 conduct of inner hole wall is actively enclosed
First power transmission face is simultaneously equipped with bayonet lock slot 32, and the lateral wall of driving member 3 is equipped with ratchet 12 as the second power transmission face, the present embodiment
Other structures and working principle can refer to embodiment 2, details are not described herein again.
Certainly, the elastic ring 5 in above-described embodiment 1,2,3 can also be located in the circle that all bayonet locks 4 are surrounded, elastic ring
5 are resisted against simultaneously at the load-carrying surface 44 of spring pressure position 43 of all bayonet locks 4, make card using the elastic force that elastic ring 5 expands outwardly
Pin 4 resets.
In addition, Figure 17,18 spanners for depicting two kinds of different structures, in which:
In spanner shown in Figure 17, the both ends of handle 2 are respectively equipped with one and actively enclose 1, and pass in the active circle 1 at both ends
The rotation direction of moving part 3 is on the contrary, when needing reversely to turn connector, it is only necessary to turn spanner, actively be enclosed in 1 using another
Driving member 3 and connector cooperate, reversed torsion transmitting can be realized.
In spanner shown in Figure 18, the not quincuncial through-hole in center of driving member 3, section is positive the column of Polyhedral
Body 34, the cylinder 34 protrude from the surface of spanner, can protrude into and be fitted in sleeve, be matched by sleeve and connector
It closes.
Claims (9)
1. a kind of big torque-force ratchet spanner, the ontology including being equipped with actively circle and handle are actively equipped with driving member in circle, in institute
State the axial limiting mechanism for being actively equipped between circle and driving member and limiting its axially opposing displacement, it is characterised in that: the transmission
The inner hole wall of the lateral wall of part, actively circle forms two nested cylindric power transmission faces, wherein the first power transmission face is equipped with bayonet lock
Slot is rotatably mounted with bayonet lock in bayonet lock slot, and the side of bayonet lock is equipped with protrusion, and the bayonet lock is connect with dynamic clamping head and quiet clamping head, card
It sells and is rotated under the elastic force effect of dynamic clamping head and quiet clamping head, protrusion is driven to protrude from bayonet lock slot and be in contact with the second power transmission face, it is described
The outermost endpoint of protrusion is greater than the minimum range in the second power transmission face and bayonet lock central axes at a distance from bayonet lock central axes；Institute
The the first power transmission face stated is the rough surface or annular knurl face or stripe surface after polishing；The structural member as composed by driving member and bayonet lock
Lateral surface and actively circle inner hole wall mutually pushes against during, the protrusion of bayonet lock be gradually exposed in bayonet lock slot and with actively circle
Inner hole wall be in contact, and as torsion is gradually increased, the diameter of driving member and structural member composed by bayonet lock is also become larger；
The lateral surface of the structural member as composed by driving member and bayonet lock and the actively inner hole wall of circle release push against during, bayonet lock it is convex
Portion is gradually rotated to bayonet lock slot direction, is gradually become smaller as the diameter of driving member and structural member composed by bayonet lock, final bayonet lock
Protrusion and the inner hole wall of active circle mutually slide therebetween.
2. big torque-force ratchet spanner according to claim 1, it is characterised in that: the bayonet lock is equipped with spring and presses position, institute
Stating dynamic clamping head and quiet clamping head is elastic ring, and the elastic ring is placed on or is resisted against at the spring pressure position of all bayonet locks, the elastic ring
The central axes of bayonet lock are eccentric in by the active force that spring pressure position is applied to bayonet lock, so that bayonet lock is made in the elastic force of dynamic clamping head and quiet clamping head
With lower rotation.
3. big torque-force ratchet spanner according to claim 2, it is characterised in that: the spring pressure of the power transmission face or bayonet lock
The fixing groove for limiting elastic ring axial movement is equipped at position.
4. big torque-force ratchet spanner according to claim 3, which is characterized in that the bayonet lock back in the side of protrusion
For cambered surface, the bayonet lock slot is equipped with arcuate structure compatible with the cambered surface.
5. big torque-force ratchet spanner according to any one of claims 1-4, it is characterised in that: the second power transmission face is equal
It is furnished with ratchet, the extending direction of ratchet is parallel to the central axes of actively circle, and the protrusion is the latch cooperated with the ratchet.
6. big torque-force ratchet spanner according to claim 5, it is characterised in that: the axial limiting mechanism includes circlip,
Two power transmission faces are equipped with the corresponding jump-ring slot in position, and the circlip is installed in jump-ring slot.
7. big torque-force ratchet spanner according to claim 6, it is characterised in that: the active circle is two and is respectively set
In the both ends of the handle, the driving member and bayonet lock positioned there between, elastic reset matched with two active circles
The installation direction of part and axial limiting mechanism is opposite.
8. big torque-force ratchet spanner according to claim 6, it is characterised in that: the driving member center is quincuncial logical
Hole or the positive Polyhedral cylinder for protruding from wrenching surface.
9. big torque-force ratchet spanner according to claim 6, it is characterised in that: the dynamic clamping head and quiet clamping head is wound spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133661.XA CN108058121B (en) | 2018-02-09 | 2018-02-09 | Big torque-force ratchet spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133661.XA CN108058121B (en) | 2018-02-09 | 2018-02-09 | Big torque-force ratchet spanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108058121A CN108058121A (en) | 2018-05-22 |
| CN108058121B true CN108058121B (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133661.XA Active CN108058121B (en) | 2018-02-09 | 2018-02-09 | Big torque-force ratchet spanner |
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| Country | Link |
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| CN (1) | CN108058121B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11491613B2 (en) | 2018-02-09 | 2022-11-08 | Huazhong He | High-torque ratchet wrench |
| CN111843898B (en) * | 2020-07-29 | 2021-08-06 | 安阳市途鑫机动车鉴定评估有限公司 | Self-locking mute needle roller wrench |
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| US6112624A (en) * | 1998-10-01 | 2000-09-05 | Chen; Yu-Tzu | Rotary lever assembly for a wrench with a direction control mechanism |
| CN201659531U (en) * | 2010-01-05 | 2010-12-01 | 彭桔星 | Ratchet wrench and modified restraining gear structure of same |
| CN201856197U (en) * | 2010-11-17 | 2011-06-08 | 刘莉 | Ratchet wrench |
| CN104149059A (en) * | 2014-07-02 | 2014-11-19 | 苏州市职业大学 | Ratchet wrench |
| CN204546384U (en) * | 2015-04-03 | 2015-08-12 | 浙江亿洋工具制造有限公司 | Ratchet spanner commutating structure |
| CN106624609A (en) * | 2015-11-03 | 2017-05-10 | 昰星实业有限公司 | Swivel preparation method and torque tool for manufacturing swivel based on method |
| CN107344343A (en) * | 2017-08-31 | 2017-11-14 | 昆山义成工具有限公司 | Single direction rotation spanner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205799334U (en) * | 2016-06-08 | 2016-12-14 | 杭州骏腾工具制造有限公司 | There is the ratchet spanner of the most fixing screwdriver bit function |
| CN205799327U (en) * | 2016-06-08 | 2016-12-14 | 杭州骏腾工具制造有限公司 | Clip ratchet spanner with c-type card spring coil solid screwdriver bit assembly |
| CN106737340B (en) * | 2016-11-23 | 2018-10-26 | 浙江力源工具有限公司 | A kind of friction type ratchet wrench |
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2018
- 2018-02-09 CN CN201810133661.XA patent/CN108058121B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112624A (en) * | 1998-10-01 | 2000-09-05 | Chen; Yu-Tzu | Rotary lever assembly for a wrench with a direction control mechanism |
| CN201659531U (en) * | 2010-01-05 | 2010-12-01 | 彭桔星 | Ratchet wrench and modified restraining gear structure of same |
| CN201856197U (en) * | 2010-11-17 | 2011-06-08 | 刘莉 | Ratchet wrench |
| CN104149059A (en) * | 2014-07-02 | 2014-11-19 | 苏州市职业大学 | Ratchet wrench |
| CN204546384U (en) * | 2015-04-03 | 2015-08-12 | 浙江亿洋工具制造有限公司 | Ratchet spanner commutating structure |
| CN106624609A (en) * | 2015-11-03 | 2017-05-10 | 昰星实业有限公司 | Swivel preparation method and torque tool for manufacturing swivel based on method |
| CN107344343A (en) * | 2017-08-31 | 2017-11-14 | 昆山义成工具有限公司 | Single direction rotation spanner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108058121A (en) | 2018-05-22 |
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