CN107152195B - Disengaged handle automatically resets and idling device - Google Patents

Abstract

A kind of disengaged handle automatically resets and idling device, it is related to anti-theft lock field, mainly synchronizing on a movable plate is sold while being inserted into the long gap of drive disk and the bayonet of driven wheel, wherein, drive disk and handle rotate synchronously, driven wheel is for pushing two-way reset spring, and when positive and negative two direction rotates handle no more than certain angle, handle can automatically reset；When rotating handle more than certain angle, synchronous pin is pushed out plate and pushes and deviate from from bayonet, and handle can dally；After handle rotates a circle, synchronous pin is reinserted in bayonet, and handle restores auto-reset function.Apparatus of the present invention are suitable for being equipped with the lockset of overload protection arrangement in lock body, i.e. handle can automatically reset, and facilitate operation；Handle can also dally, and destroy lockset and pirate of the open lockset to prevent.

Description

Disengaged handle automatically resets and idling device

Technical field

The present invention relates to anti-theft lock fields, and in particular to a kind of disengaged handle automatically resets and idling device.

Background technique

It is " the fixed cross mechanical anti-theft lock of lock core " (patent No. ZL201410020215.X) in the prior art, " a kind of Double-inserting type security door " (patent No. ZL201610068454.1), " double-inserting type security door and external hanging type locking device " (patent No. ZL 201610129609.8), " a kind of digital code, monomer key combination set " (patent No. ZL201610067763.7), " a kind of The copying apparatus of key duplicating machine " (patent No. ZL201610068057.4), " the fixed cross machine of lock core matched with Fingerprint Lock Tool theftproof lock " (application number 201610990489.0), " a kind of cam mechanism of Fingerprint Lock " (application number 201611045195.7) Eight patent of invention Shens such as " resetting-mechanism of the fixed cross mechanical anti-theft lock of lock core " (application numbers 201710193748.1) Please, special structure and performance are all had, wherein the cross mechanical anti-theft lock of first patent: technology fail to open, goes into operation by force Tool can not destroy, size of key is big, key can be that steel ball, key are only inserted or take out with the pellet in digital code representative, lock core Out, do not rotate, using rotation handle unlock or locking, handle have overload protection arrangement can dally, unlock or lock it is easy to operate It is easy etc.；Second to the 8th patent is related to the core skill that latch portion matched with its uses first patent completely Art, or the core technology is relied on to devise other products or auxiliary body.

Currently, inventor is utilizing above-mentioned eight patented technologies exploitation new product, by testing and actual use shows New product also needs to continuously improve technology, optimization design.Wherein, the automatic multiple of handle is not addressed in above-mentioned all patent applications Position problem, practical manner and there are problems to be: pushing after handle unlocks, need artificially rotate handle be reset to it is close horizontal Position, otherwise key can't pump out；Counter mention also needs artificially to rotate handle reset after handle is locked, not multiple although very light Position, handle will influence beauty obliquely to stopping.In short, the handle of new product fails using hand-reset mode Realize auto-reset function.

It in the prior art, is the lockset of all manual operations, handle automatically resets after pushing or handle is counter mentions automatic afterwards answer Position, has been usual products, it is therefore an objective to convenient for operation, reduce unnecessary trouble for user.But the handle of conventional lock is positive and negative Two directions rotate the not super an angle of 90 degrees of angle, also will when continuing strength torsion handle without overload protection arrangement in lock body Destroy certain components of lockset.And the lockset that above-mentioned eight patent applications are addressed has the characteristics that be different from traditional product, i.e., Key is only inserted or extracts out, do not rotate, and unlocks or locks using rotation handle, when strength reverses handle because having in cam mechanism Overload protection arrangement (i.e. limiter of moment), handle can dally, and destroy lockset and pirate of the open lockset to prevent.In such cases such as Fruit automatically resets technology only with positive and negative two direction of common handle, after handle idle running, automatic reset device just will appear therefore Barrier.In addition, also there is patented product to provide idle running handle, such as " overload protective device of novel intelligent theftproof lock " in the prior art (patent No. 2015206788831) is provided with overload protective device outside lock body, but is also only limitted to handle and can dally, not simultaneously The automatic resetting characteristics for describing handle, so above-mentioned eight patent applications and other prior arts are not described and solution is held Hand can positive and negative two direction automatically reset the problem of can also dallying.

Summary of the invention

For overcome above-mentioned patented technology there are the drawbacks of, the present patent application provides a kind of disengaged handle and automatically resets and empty Rotary device, when positive and negative two direction rotates handle no more than certain angle, handle can automatically reset；When rotation handle is more than one When determining angle, handle idle running；After handle rotates a circle, handle restores auto-reset function again.

The present invention adopts the following technical scheme:

A kind of disengaged handle automatically resets and idling device, including lockset outer panels, fixed column, handle, origin column and Two-way reset spring, wherein lockset outer panels are rectangle or round or ellipse, are equipped with fixed column on the inside of lockset outer panels, lead to It crosses and is connect with the screw rod penetrated on the inside of door leaf, lockset outer panels to be fixed in door leaf outer panels, set in lockset outer panels There are key insertion channel and the handle mounting hole of bell mouth shape, handle includes handle and handle shaft, and handle shaft and handle are pacified Hole activity assembly is filled, the square opening and prism of handle shaft is used to be flexibly connected simultaneously with the moving part opened or lock outside driving lockset room It rotates synchronously, origin column is fixed on the inside of lockset outer panels, and two-way reset spring is assemblied on handle shaft periphery, static Under, two steel wire ends of two-way reset spring are located at origin column two sides and in close contact therewith, it is characterized in that: lockset outer panels Inside be additionally provided with driven wheel, in the middle part of rotary hole be circular hole, with handle shaft activity assembly after can relatively rotate, a left side for driven wheel Side is arc-shaped greater than semicircle, and with rotary hole concentric, the inside of left arc is horseshoe-shaped horseshoe hole, left arc It is excessive ring between horseshoe hole, origin column is located in horseshoe hole, but is not in contact with it, neighbouring rotary hole one among horseshoe hole Side be equipped with it is vertical with driven wheel from pawl, should be inserted between two steel wire ends of two-way reset spring from pawl simultaneously and its It is in close contact, the bayonet of rectangle is equipped among the right side edge of driven wheel, it is camber line or straight line that bayonet two sides are symmetrical, bayonet Vertex be less than the arc radius on the left of driven wheel, the inboard side of driven wheel and two-way reset at a distance from the center of circle of rotary hole Spring contact, another side are contacted with plate is pushed, and the pushing plate is symmetrical above and below with central axes, pushes the centre bore at the middle part of plate It is assembled with handle shaft activity, pushes one end on the central axes of plate and be additionally provided with location hole, origin column passes through its end behind horseshoe hole Portion and location hole assemble, i.e. pushing plate is not able to rotate, and the circumference for pushing plate includes three parts, and one end equipped with location hole is Orthodrome end, the other end are small arc-shaped end, and the arc radius at orthodrome end is greater than small arc-shaped end to be pushed away therebetween to push side Be additionally provided with drive disk on the outside of plate squeezing, and with push plate lateral surface movable contact, the drive disk is integrally rounded, in the middle part of peace It fills the opening assembly of hole lobe and handle shaft, rotate synchronously, one end of drive disk is equipped with U-shaped spring jack, and the other end is equipped with Circlip is assembled in long gap, the outside of drive disk, and movable plate is assembled in the outside of circlip, and the middle part of the movable plate is equipped with slotted hole, and It is assembled with handle shaft activity, one end of movable plate is equipped with U-shaped spring jack, and the other end is equipped with perpendicular synchronous pin, moves The two sides for being located at synchronous pin on movable plate are additionally provided with convex block, and U-shaped spring is between drive disk and movable plate, the end of U-shaped spring It is inwardly inserted into the U-shaped spring jack of drive disk, the other end is inserted into outward in the U-shaped spring jack of movable plate, outside movable plate Side is additionally provided with backplate, the medial surface in the middle part of the backplate and movable plate movable contact, the bending end and lockset outer panels at backplate both ends The backplate fixing bolt fixing assembling of inside, under static, small arc-shaped of the synchronous pin after the long gap of drive disk with pushing plate Movable contact is held, synchronous pin extends to inboard and is inserted into the bayonet of driven wheel.

Handle automatically resets and dally principle: when handle rotating, handle shaft drives drive disk rotation, and the length of drive disk is slitted Mouthful push the synchronous pin rotation of movable plate, synchronous pin makes driven wheel by the bayonet of promotion driven wheel, it is two-way multiple to overcome from pawl The resistance of position spring rotates simultaneously, and in the case of the corner needed for the not super normal unlocking of the rotational angle of handle, locking, dependence is two-way The thrust of reset spring, handle can automatically reset；When handle, which drives drive disk to rotate forward or backwards, is more than certain angle, Synchronous pin starts to contact with the pushing side for pushing plate, and is run by constantly being pushed outward in company with movable plate, at the same time, U Shape spring is compressed, and final synchronous pin is deviate from from bayonet, then driven wheel is automatically reversed under the action of two-way reset spring Revolution, at this point, handle, drive disk and movable plate are without hindrance and start to dally immediately, wherein synchronous pin is along bayonet two sides Camber line or the outer ledge of linear end face and excessive ring slide, after handle rotates a circle, synchronous pin returns to pushing plate Small arc-shaped end side, and inwardly bounce back and reinserted in bayonet under the promotion of U-shaped spring.If continuing positive, reversed rotation Turn handle, then repeats movement just now.Particularly, after synchronous pin is deviate from from bayonet, driven wheel, that is, fast rotation, because of bayonet Vertex be less than the arc radius on the left of driven wheel, in driven wheel turning course, bayonet at a distance from the center of circle of rotary hole Two sides camber line or linear end face will push synchronous pin and continue to run outward, and constantly be compressed U-shaped spring, therefore same Step pin can play damping action to the rotary motion of driven wheel by U-shaped spring, avoid generating biggish impact and damaging certain Component.

The inside in the outside of drive disk, movable plate is arranged in circlip, it is therefore an objective to produce movable plate by the pressing force of circlip The influence of raw frictional resistance, i.e. movable plate can move freely；The end of origin column is assembled after passing through horseshoe hole with pushing plate, Therefore the effect in horseshoe hole is the rotary motion for making origin column not hinder driven wheel；U-shaped spring, convex block are respectively positioned on movable plate and drive Between Moving plate, therefore the effect of convex block is to keep movable plate and drive disk parastate；Backplate enables movable plate art skating, It is not to generate too big gap with drive disk again.

The scope of application of product of the present invention is the case where inside of lockset or other products is equipped with overload protection arrangement, no Then, when strength reverses handle, handle can dally, the internal part of the necessarily lockset or other products that wreck.It is right It also will cause the consequence of destructive unlatching in lockset, so the requirement in national standard to antitheft Handle for lock is " when handle is broken It should ensure that lockset is not gated on after breaking down ".For example, mechanical lock in the prior art is all made of rotation key unlocking mode, have Handle it is fixed, some handles pushes process and only drives lock tongue, do not drive master latch and universe rod, most of Fingerprint Lock Handle two-way reset but can cannot dally.It is not set can dally handle the main reason for be that various locksets in the prior art are equal Using door leaf side load mode, sShape features are big and thin, the i.e. finite thickness of lockset, and the confined space inside lockset is uncomfortable It closes and installs overload protection arrangement (or untapped because of cost factor) additional.And the corresponding lockset of eight patents in background technique is adopted With from load mode on the inside of door leaf, sShape features are small and thick, so the handle that setting of just having ready conditions can dally, and only exist Handle protection aspect just clearly enhances the security performance of lockset.

In addition, technical solution of the present invention is by two-way automatic reset and idling device is arranged around handle shaft and lockset Within outer panels, same function is also able to achieve if the device of function of the same race is installed on inside lock body.For example, background technique In theftproof lock, with handle assembly be camshaft, with camshaft assembly the driven lid including cam mechanism, if by existing skill The common two-way automatic reset device (wherein including two-way reset spring) of art is assembled with driven lid, then camshaft and handle also can Realize two-way automatic reset and lost motion functionality.But being related to problem has three aspects, first is that requiring must have enough skies in lock body Between relevant apparatus is set, " a kind of improved baffle type mechanical anti-theft lock " (patent No. ZL201320777538.4) can be used at this time The relevant technologies, i.e., limiter of moment is punching press fin plate overlaying structure, limiter push spring is cylindrical spring or disk spring, this The advantages of kind structure is that axial dimension is smaller, is capable of providing installation space, while not influencing total arrangement.Second is that two-way reset The elastic force of spring has particular/special requirement: elastic force is small, to the effect that automatically resets of handle with regard to poor；Elastic force is big, then the bullet of limiter push spring Power just needs to significantly increase, and then moment of resistance when idle running significantly increases, and leads to the moment cam mechanism rebound impact force mistake that dallies Greatly, high to the material of associated components, intensity requirement.Meanwhile because of the probability very little that idle running occurs, limiter of moment when regular job Always " over-burden " (because drag effect for being constantly subjected to two-way reset spring), durability, stability to cam mechanism Also unfavorable.Third is that idle resistance square is excessive, it can also seriously affect the pellet to lockset, lock post, drive disk and push away the components such as column Protecting effect, or even lose the existent value of lost motion functionality (when lockset cannot be opened, handle be closely located to static bit Set, the elastic force of two-way reset spring at this time is smaller, forward and reverse rotation to terminal position when elastic force it is maximum, therefore lockset cannot be opened Idle resistance square when opening mainly is generated by the reaction force of pellet, lock post).On the contrary, apparatus of the present invention are installed on handle The elastic force of two-way reset spring in shaft can design it is larger, on the lost motion functionality of handle without influence, as long as people rotate handle The feeling of handle is effortless, can receive.

The beneficial effects of the present invention are: being automatically reset using special handle and free-wheeling mechanism, structure is simple, low cost, But it is able to achieve the function that handle can automatically reset but also dally, is meeting lockset safety, durability and stability requirement Meanwhile also meeting the needs of product convenience.

Detailed description of the invention

Fig. 1: lockset overall assembling schematic diagram；

Fig. 2: handle automatically resets and idling device assembling schematic diagram；

Fig. 3: handle automatically resets and the partial assembled schematic diagram of idling device；

Fig. 4: main drive disk, swing rod and the other transmission mechanism assembling schematic diagrams of lockset；

Fig. 5: driven torus schematic diagram；

Fig. 6: camshaft schematic diagram；

Fig. 7: rotating plate schematic diagram；

Fig. 8: drive disk schematic diagram；

Fig. 9: driven wheel main view；

Figure 10: Fig. 9 top view；

Figure 11: plate schematic diagram is pushed；

Figure 12: movable plate main view；

Figure 13: Figure 12 top view；

Figure 14: U-shaped spring main view；

Figure 15: Figure 14 top view；

Figure 16: backplate main view；

Figure 17: Figure 16 left view.

In each figure: 1: lockset outer panels, 2: key is inserted into channel, and 3: key mouth, 4: fixed column, 5: handle, 6: handle turns Axis, 7: drive disk, 8: mounting hole lobe, 9: long gap, 10:U shape spring jack, 11: driven wheel, 12: bayonet, 13: rotary hole, 14: from pawl, 15: horseshoe hole, 16: excessive ring, 17: push plate, 18: centre bore, 19: small arc-shaped end, 20: orthodrome end, 21: Pushing side, 22: location hole, 23: origin column, 24: movable plate, 25: synchronous pin, 26: slotted hole, 27: convex block, 28:U shape spring, 29: backplate, 30: backplate fixing bolt, 31: two-way reset spring, 32: steel wire end, 33: circlip, 34: camshaft, 35: actively Piece, 36: driven lid, 37: driven torus, 38: collision bead, 39: collision bead spring, 40: lock core group, 41: main drive disk, 42: swing rod, 43: Anti- skid plate, 44: backboard, 45: buckle closure, 46: door leaf outer panels.

Specific embodiment

Below with reference to Fig. 1 to Figure 17, the present invention is further described.

Lockset overall assembling schematic diagram as shown in Figure 1 is that apparatus of the present invention and a kind of theftproof lock complement one another and use A kind of technical solution, the theftproof lock in the program is the corresponding product of eight patents described in background technique.Wherein, lock core group 40 and cam mechanism be mounted between the anti-skid plate 43 of lock body and backboard 44, the transmission mechanism of lockset is located at backboard 44 and buckle closure Between 45, locking bolt, lock tongue are located at the outside (using external hanging type movable connection method, being not drawn into figure) of buckle closure 45, entire lock body It is installed on inside door leaf, only key mouth 3 is exposed to door leaf outer panels 46, the outboard end of camshaft 34 passes through door leaf outer panels 46 And it is located within lockset outer panels 1.

As shown in Fig. 1,4,5,6,7, cam mechanism includes camshaft 34, rotating plate 35, driven lid 36, driven torus 37, touches Pearl 38 and collision bead spring 39, rotating plate 35 and the assembly of camshaft 34 rotate synchronously, the axis hole across backboard 44 of driven torus 37 41 fixing assembling of main drive disk of circular shaft part of the part including flat shaft portion and end, flat shaft portion and unlocking transmission mechanism, It rotates synchronously, circular shaft part and 42 activity of swing rod are assembled.

The effect of lock core group 40 is the rotation of the lockset unlocking condition control driven torus 37 according to setting.

As shown in Figure 1, 2, 3, lockset outer panels 1 are equipped with key insertion channel 2 and handle mounting hole, wherein because of key Mouth 3 is the length for not increasing key in the same plane with door leaf outer panels 46, and the key provided with bell mouth shape is inserted into channel 2.Fixed column 4 is equipped on the inside of lockset outer panels 1, by connecting with the screw rod penetrated on the inside of door leaf, to consolidate lockset outer panels 1 Dingan County is in door leaf outer panels 46.Handle 5 includes handle and handle shaft 6, and handle shaft 6 passes through holding for lockset outer panels 1 After hand mounting hole, the outboard end activity of the square opening and prism and camshaft 34 of handle shaft 6 is assembled.

In the present embodiment, camshaft 34 is to be flexibly connected with 6 square opening and prism of handle shaft for driving lockset The moving part that outdoor opens or lock.When handle 5 rotates, camshaft 34 follows synchronous rotation.When key is incorrect or without key And when strongly reversing handle 5, rotating plate 35 overcomes the thrust of collision bead spring 39 and driven lid 36, driven torus 37 to skid, camshaft 34 and handle 5 can dally.

As shown in Fig. 1-3 and Fig. 8-17, handle resetting-mechanism includes lockset outer panels 1, fixed column 4, handle 5, origin column 23, two-way reset spring 31, driven wheel 11, pushing plate 17, drive disk 7, circlip 33, movable plate 24, U-shaped spring 28, backplate 29 With backplate fixing bolt 30.It is outside from the inside of lockset outer panels 1, in addition to above-mentioned parts, the structure feature of other each components and Assembly relation is as follows:

Origin column 23 is fixed on the inside of lockset outer panels 1, the periphery activity of two-way reset spring 31 and handle shaft 6 Assembly, two steel wire ends 32 of two-way reset spring 31 are in close contact with the two sides of origin column 23 respectively, in driven wheel 11 Portion is equipped with rotary hole 13, and assembles with the periphery activity of handle shaft 6, and the left side of driven wheel 11 is the circular arc greater than semicircle Shape, and with 13 concentric of rotary hole, the inside of left arc is horseshoe-shaped horseshoe hole 15, between left arc and horseshoe hole 15 As excessive ring 16, origin column 23 is located in horseshoe hole 15, but is not in contact with it, and among horseshoe hole 15 neighbouring 13 side of rotary hole Equipped with vertical with driven wheel 11 from pawl 14, it should be inserted between two steel wire ends 32 from pawl 14 and closely be connect with it Touching, the right side edge centre of driven wheel 11 are equipped with the bayonet 12 of rectangle, and 12 two sides of bayonet are symmetrical, are camber line or straight line, bayonet 12 Vertex at a distance from the center of circle of rotary hole 13 be less than left arc radius, push plate 17 it is symmetrical above and below with central axes, push The middle part of plate 17 is equipped with centre bore 18, and assembles with the periphery activity of handle shaft 6, pushes one end on the central axes of plate 17 Equipped with location hole 22, origin column 23 is assembled after passing through horseshoe hole 15 with location hole 22, i.e. pushing plate 17 is not able to rotate, and pushes plate 17 Circumference include three parts, one end equipped with location hole 22 be orthodrome end 20, the other end be small arc-shaped end 19, orthodrome The arc radius at end 20 is greater than small arc-shaped end 19, and therebetween to push side 21, drive disk 7 passes through the mounting hole lobe in the middle part of it 8 with the opening fixing assembling of handle shaft 6, rotate synchronously, one end of drive disk 7 is equipped with U-shaped spring jack 10, and the other end is equipped with Long gap 9, the middle part of movable plate 24 are slotted hole 26, and are assembled with the periphery activity of handle shaft 6, one end of movable plate 24 Equipped with U-shaped spring jack 10, the other end is equipped with perpendicular synchronization pin 25, and the two sides of synchronous pin 25 are located on movable plate 24 also Equipped with convex block 27, the inside in the outside of drive disk 7, movable plate 24 is arranged in circlip 33, and U-shaped spring 28 is located at drive disk 7 and moves Between movable plate 24, the both ends of U-shaped spring 28 are inserted respectively into the U-shaped spring jack 10 of drive disk 7, movable plate 24, convex block 27 Effect be make movable plate 24 keep with 7 parastate of drive disk, and enable U-shaped spring 28 activity operation, the two of backplate 29 30 fixing assembling of backplate fixing bolt of a bending end and the inside of lockset outer panels 1, in the lateral surface and backplate 29 of movable plate 24 The medial surface movable contact in portion, and movable plate 24 can between backplate 29 and drive disk 7 sliding and running.Under static state, synchronous pin 25 pass through with 19 movable contact of small arc-shaped end after long gap 9, and synchronous pin 25 extends to inboard and be inserted into bayonet 12.

Handle automatically resets, idle cycle is as follows:

When handle 5 rotates, handle shaft 6 drives drive disk 7 to rotate, and the long gap 9 of drive disk 7 pushes synchronous 25 turns of pin Dynamic, synchronous pin 25 makes driven wheel 11 by the bayonet 12 of promotion driven wheel 11, overcomes the resistance of two-way reset spring 31 from pawl 14 Power, which synchronizes, follows rotation, in the case of the corner needed for the not super normal unlocking of the rotational angle of handle 5, locking, by two-way reset The thrust of spring 31, handle 5 can automatically reset；When handle 5 rotates forward or backwards is more than certain angle, synchronous pin 25 is opened Begin to contact with the pushing side 21 for pushing plate 17, and is constantly pushed and run outward in company with movable plate 24, at the same time, U-shaped bullet Spring 28 is compressed, and final synchronous pin 25 is deviate from from bayonet 12, then driven wheel 11 is automatic under the action of two-way reset spring 31 Ground reversed turning, and handle 5, drive disk 7 and movable plate 24 start to dally immediately, wherein synchronous pin 25 is along 12 liang of bayonet The outer ledge of the camber line of side or linear end face and excessive ring 16 slides, and after handle 5 rotates a circle, synchronous pin 25 is returned to 19 side of small arc-shaped end, and inwardly bounce back and reinserted in bayonet 12 under the promotion of U-shaped spring 28.If continuing positive, anti- To rotation handle 5, then movement just now is repeated.

Particularly, after synchronous pin 25 is deviate from from bayonet 12, driven wheel 11 is fast rotation, and in this turning course In, the two sides camber line of bayonet 12 or linear end face will push the synchronous continuation of pin 25 and run outward, and constantly make U-shaped spring 28 are compressed, and therefore, synchronous pin 25 can play damping action to the rotary motion of driven wheel 11 by U-shaped spring 28, avoid producing It gives birth to biggish impact and damages certain components.

Claims (1)

1. a kind of disengaged handle automatically resets and idling device, including lockset outer panels, fixed column, handle, origin column and double To reset spring, wherein lockset outer panels are rectangle or round or ellipse, are equipped with fixed column on the inside of lockset outer panels, pass through It is connect with the screw rod penetrated on the inside of door leaf, lockset outer panels to be fixed in door leaf outer panels, lockset outer panels are equipped with The key insertion channel of bell mouth shape and handle mounting hole, handle include handle and handle shaft, and handle shaft and handle are installed Hole activity is assembled, and the moving part flexible connection that the square opening and prism of handle shaft is used to open or lock outside same driving lockset room is simultaneously same Step rotation, origin column are fixed on the inside of lockset outer panels, and two-way reset spring is assemblied on handle shaft periphery, static Under, two steel wire ends of two-way reset spring are located at origin column two sides and in close contact therewith, it is characterized in that: lockset outer panels Inside be additionally provided with driven wheel, in the middle part of rotary hole be circular hole, with handle shaft activity assembly after can relatively rotate, a left side for driven wheel Side is arc-shaped greater than semicircle, and with rotary hole concentric, the inside of left arc is horseshoe-shaped horseshoe hole, left arc It is excessive ring between horseshoe hole, origin column is located in horseshoe hole, but is not in contact with it, neighbouring rotary hole one among horseshoe hole Side be equipped with it is vertical with driven wheel from pawl, should be inserted between two steel wire ends of two-way reset spring from pawl simultaneously and its It is in close contact, the bayonet of rectangle is equipped among the right side edge of driven wheel, it is camber line or straight line that bayonet two sides are symmetrical, bayonet Vertex is less than the arc radius on the left of driven wheel, the inboard side of driven wheel and two-way reset bullet at a distance from the center of circle of rotary hole Spring contact, another side with push plate contact, the pushing plate is symmetrical above and below with central axes, push the middle part of plate centre bore and Handle shaft activity assembly pushes one end on the central axes of plate and is additionally provided with location hole, and origin column passes through its end behind horseshoe hole It is assembled with location hole, i.e. pushing plate is not able to rotate, and the circumference for pushing plate includes three parts, and one end equipped with location hole is big Arc end, the other end are small arc-shaped end, and the arc radius at orthodrome end is greater than small arc-shaped end, therebetween to push side, are pushed Be additionally provided with drive disk on the outside of plate, and with push plate lateral surface movable contact, the drive disk is integrally rounded, in the middle part of installation The assembly of the opening of hole lobe and handle shaft rotates synchronously, and one end of drive disk is equipped with U-shaped spring jack, and the other end is equipped with length Circlip is assembled in gap, the outside of drive disk, and movable plate is assembled in the outside of circlip, and the middle part of the movable plate is equipped with slotted hole, and with Handle shaft activity assembly, one end of movable plate are equipped with U-shaped spring jack, and the other end is equipped with perpendicular synchronous pin, mobile The two sides for being located at synchronous pin on plate are additionally provided with convex block, U-shaped spring between drive disk and movable plate, the end of U-shaped spring to In the U-shaped spring jack of interior insertion drive disk, the other end is inserted into outward in the U-shaped spring jack of movable plate, the outside of movable plate It is additionally provided with backplate, the medial surface in the middle part of the backplate and movable plate movable contact, in the bending end and lockset outer panels at backplate both ends The backplate fixing bolt fixing assembling of side, under static, small arc-shaped end of the synchronous pin after the long gap of drive disk with pushing plate Movable contact, synchronous pin extend to inboard and are inserted into the bayonet of driven wheel.