CN201661136U - Mechanical coded lock with dual-row button - Google Patents

Abstract

The utility model relates to a mechanical coded lock with dual-row buttons, which comprises a lock box and a control panel. A lock tongue opening control mechanism, a lock tongue flexing actuation and a digital arrangement mechanism are arranged in the lock box; wherein the digital arrangement mechanism comprises two reset gear groups, two carry gear groups, two counting gear groups, two carrying and resetting control components and a code-changing clutch component. The mechanical coded lock is characterized in that the two reset gear groups, the two carry gear groups, the two counting gear groups and the two carrying and resetting control components are respectively arranged in the lock box in opposite directions along the longitudinal direction, and the code-changing clutch component comprises a clutch rack block fixed on the front end of a counting gear shaft, a code-changing clutch gear engaged with the clutch rack block, a code-changing shaft seat and a clutch baffle fixed on the counting gear shaft. The utility model has the advantages that: the mechanical coded lock realizes coding with the dual-row buttons, and the button number is up to 1012, thereby enhancing the decoding difficulty; due to the compact structure and the simple operation, the handle can pop up only through rotating for 90 degrees during unlocking, thereby increasing the unlocking speed; and the code-changing clutching is labor-saving, the displacement is accurate, and the failure rate is low.

Description

Double-keyboard mechanical coded lock

Technical field

The utility model belongs to a kind of lockset, particularly a kind of double-keyboard mechanical coded lock of using on safety cabinet or the security door of being used for.

Background technology

Mechanical code lock has obtained using widely because of advantages such as its secret key amount height, theftproof performance are good.The patent No. discloses a kind of mechanical code lock for the utility model patent of " CN2007200119904 ", its structure is by lock housing, the dead bolt that is contained in the lock housing is opened controlling organization and flexible executing agency of dead bolt and digital code editing mechanism formation, its digital code editing mechanism is by one group of reseting gear group, carry gear train and counting gear group and reset assembly and change yard clutch component and constitute, it changes yard clutch component is by the clutch for clutch control piece that is located at counting gear axle front end, yard control strip that changes that is located at clutch push rod and the pressure top spring in the clutch for clutch control piece and is located on the counting gear axle constitutes.The problem that this mechanical cipher is latched in is: 1, since reseting gear group, carry gear train and counting gear group constitute by the one group of gear that is located on the gear shaft separately respectively, make when unblanking the key or turn round cover 30 degree angles outward and realize resetting of must first dextrorotation unblanking, again derotation unblank key or turn round outward the cover 180 the degree just can unblank, the speed of not only unblanking is slow, complex operation, and size of key only is 10 ⁷, can only reach national A grade standard, it is low to decode difficulty; Need insert when 2, changing yard and change yard key and drive the translation forward of counting gear group, counting gear and carry gear are broken away from, not only change yard clutch and require great effort, and clutch walks waywardly, make when changing yard clutch and break down easily.

Summary of the invention

Technical problem to be solved in the utility model be to provide a kind of compact conformation, easy and simple to handle, the speed of unblanking is fast, secret key amount height, to decode difficulty very big, changes a yard clutching labor-saving, walks accurately the double-keyboard mechanical coded lock that fault rate is low.

The utility model is achieved in that it comprises lock box and guidance panel, in lock box, be provided with dead bolt and open controlling organization and flexible executing agency of dead bolt and digital code editing mechanism, it is by being installed in the sub-axle of turning round of lock box base plate rear portion or lock core shaft and plectrum, stirring control panel and the advance and retreat clamp formation that can slide down at plectrum in lock box that described dead bolt is opened controlling organization; Described digital code editing mechanism is by the reseting gear group of engagement successively, the carry gear train, counting gear group and carry reset Control Component and change yard clutch component and constitute, its special character is: described reseting gear group, the carry gear train, counting gear group and carry reset Control Component are respectively two groups and direction and longitudinally are arranged in rear portion in the lock box on the contrary, in lock box, be positioned at and be respectively equipped with row's carry push rod below the carry gear train, being provided with two scheduling sign indicating number buttons on guidance panel pegs graft with the carry push rod respectively, described advance and retreat clamp is two and is located at respectively between the counting gear group and lock box base plate of plectrum both sides, and the described yard clutch component that changes is a clutch tooth bar piece by the counting gear axle front end that is separately fixed at the counting gear group, be located between two clutch tooth bar pieces and with yard clutch gear that changes of clutch tooth bar piece engagement, being connected the clutch dividing plate that changes yard axle bed and be separately fixed on the described counting gear axle that changes yard clutch gear center constitutes.

Above-mentioned double-keyboard mechanical coded lock, the rear end is fixed with the balance limited block in lock box, described clutch dividing plate is inserted into respectively in the spacing edge-cut of balance limited block, parallel the moving of counting gear group when guaranteeing to change yard clutch, thereby guarantee to change reset behind the sign indicating number smooth and easy.

Above-mentioned double-keyboard mechanical coded lock, described carry reset Control Component is by reset control strip and the undercarriage that are hinged in the lock box, be installed in ratchet and reduction torsion spring on the reseting gear axle of reseting gear group, be located in the lock box and the carry hook and the terminal point limited block of ratchet interlock, and be located in the lock box and the extension spring of colluding on the carry hook constitutes, described undercarriage one end is pressed on the control strip that resets, the other end and carry hook connect, with the reset return stroke of control strip of shortening, make the control strip that resets only need be pressed down 2mm, carry hook and ratchet are thrown off, realize resetting.

Above-mentioned double-keyboard mechanical coded lock, the flexible executing agency of described dead bolt is the handle axle by the base plate front portion of vertically running through lock box, be installed in the handle of handle axle outer end, be installed in the dead bolt control gear on the handle axle in the lock box, be inserted into respectively in the lock box and with three dead bolt tooth bars of dead bolt control gear engagement, and be fixed in the lock box and the spacing gland that is pressed in above the dead bolt tooth bar constitutes.

Above-mentioned double-keyboard mechanical coded lock, on the control panel of dead bolt unlatching controlling organization, be provided with spacing load plate, described clutch tooth bar piece is pressed in respectively on the spacing load plate, on clutch tooth bar piece, be respectively equipped with compression spring and steel ball, corresponding steel ball place is provided with two locating holes respectively on spacing load plate, assist location when changing yard clutch to be implemented in is further guaranteed to walk accurately.

The utility model has the advantages that:

1, because being respectively two groups and direction, reseting gear group, carry gear train, counting gear group and carry reset Control Component longitudinally be arranged in rear portion in the lock box on the contrary, therefore can realize the double-keyboard coding, two scheduling sign indicating number buttons can singlely be used, also can make up layout mutually, combination is digital unrestricted, all follows carry function once carry, and every row's button (being every group carry gear) can be made as five, key precision height, the secret key amount is up to 10 ¹², surpass national B grade standard, it is very big to decode difficulty.

2, owing to the advance and retreat clamp is two and is located at respectively between the counting gear group and lock box base plate of plectrum both sides, make two advance and retreat clamps control the rotation of plectrum simultaneously, the fastness and the safety of lock structure have been increased, compact conformation, easy and simple to handle, when unblanking by to only needing rotation turn round son axle or lock core shaft's 90 degree behind the coding key, can eject handle, the speed of unblanking is fast.

3, be by the clutch tooth bar piece that is separately fixed at counting gear axle front end owing to changing yard clutch component, yard clutch gear that changes that is located between two clutch tooth bar pieces constitutes with the clutch dividing plate that changes yard axle bed and be separately fixed on the counting gear axle, therefore only need insert when changing yard and change yard key rotation changing a yard clutch gear and can control that two batch totals are counted gear train and the carry gear train is thrown off simultaneously, change a yard clutching labor-saving, walk accurately, fault rate is low.

4, pick-proof, anti-drilling, install quick and convenient, use comfortable, precise control, safe and reliable, no screens phenomenon takes place, and can be widely used in finance, national defence, enterprises and institutions and civilian security door, safety cabinet, domestic safe, safety cabinet, domestic safe etc.

Description of drawings

Fig. 1 is structural representation of the present utility model (removing inner cover plate);

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B portion view of Fig. 2;

Fig. 4 is the C-C partial sectional view of Fig. 2;

Fig. 5 is the D-D partial sectional view of Fig. 1;

Fig. 6 is the E-E partial sectional view of Fig. 1;

Fig. 7 is the partial sectional view of dead bolt tooth bar after overhanging among Fig. 1;

Fig. 8 is the upward view of Fig. 2.

Among the figure: lock box 1, executive component chamber 101, control element chamber 102, preceding closure plate 2, spacing gland 3, extension spring 4, control panel 5, screens square hole 501, inner cover plate 6, spacing jump ring 7, push rod 8, spacing load plate 9, locating hole 901 changes yard axle bed 10, changes yard key 11, location-plate 12, installing plate 13, counting gear 14, clutch dividing plate 15, counting gear axle 16, plectrum 17, driver blade 18, compression spring 19, back shrouding 20, dog screw 21, base plate 22, door-plate 23, backup plate 24, guidance panel 25, key hole 2501, jump ring 26, steel ball 27, spring 28 is turned round son axle 29, turns round cover 30 outward, advance and retreat clamp 31, bar shaped 3101, card tooth 3102, guide rail 32, dead bolt tooth bar 33, dead bolt control gear 34, compression spring 35, handle axle 36, handle 37, dead bolt tooth bar 38 changes yard clutch gear 39, preceding side plate 40, terminal point limited block 41, ratchet 42, reseting gear 43, reseting gear axle 44, reduction torsion spring 45, carry gear shaft 46, carry gear 47, torsion spring 48, balance limited block 49, back side plate 50, clutch tooth bar piece 51, coding key 52, carry push rod 53, compression spring 54, limiting plate 55, support set 56, control strip 57 resets, extension spring 58, carry hook 59, undercarriage 60, compression spring 61, steel ball 62, locator slide 63.

The specific embodiment

As shown in the figure, this double-keyboard mechanical coded lock comprises lock box 1 and guidance panel 25, described lock box 1 is by base plate 22, preceding closure plate 2, two location-plates 12 that front and back are arranged, the closed shell that a pair of preceding side plate of arranging up and down 40 and a pair of back side plate 50 and inner cover plate 6 surround with two cavitys, before two cavitys, after arrange and be respectively executive component chamber 101 and control element chamber 102, be connected with back shrouding 20 in location-plate 12 outsides that are positioned at lock box 1 rear end by screw, on the opposite face of two location-plates 12, be connected with an installing plate 13 by screw respectively, peg graft with a pair of back side plate 50 respectively in two edges of installing plate 13, inner cover plate 6 shapes and base plate 22 identical and be fixed on lock box 1 above, described guidance panel 25 is positioned at base plate 22 1 sides.In executive component chamber 101, be provided with the flexible executing agency of dead bolt, the flexible executing agency of dead bolt comprises the handle axle 36 that vertically runs through base plate 22 front portions and be arranged with long keyway, be connected with handle 37 in handle axle 36 outer ends by rivet, handle 37 is inserted in the handle hole of guidance panel 25 front portions, on handle axle 36, be positioned at lock box 1 inner bottom part and be connected with dead bolt control gear 34 by key, in lock box 1, be provided with three respectively with the dead bolt tooth bar of dead bolt control gear 34 engagement, one of them dead bolt tooth bar 38 is pressed in the top of all the other two dead bolt tooth bars 33 and is drawn by preceding closure plate 2, all the other two dead bolt tooth bars 33 are drawn by side plate 40 before a pair of respectively, the both sides that are positioned at two dead bolt tooth bars 33 on base plate 22 are fixed with guide rail 32 respectively, in executive component chamber 101, be positioned at and be fixed with spacing gland 3 above the dead bolt tooth bar 38, spacing gland 3 is connected with preceding side plate 40 with preceding closure plate 2 by screw and is enclosed within on the handle axle 36, being positioned at lock box 1 one ends on handle axle 36 is provided with spacing jump ring 7 and is provided with compression spring 35 and push rod 8 at the centre bore of this end, push rod 8 upper ends are stuck in the inner surface of inner cover plate 6, and above-mentioned parts constitute the flexible executing agency of dead bolt.

In control element chamber 102, be provided with dead bolt and open controlling organization; dead bolt is opened controlling organization and is comprised being inserted in the lock box 1 and being installed on by jump ring 26 by base plate 22 outsides and turn round son axle or lock core shaft on the base plate 22; present embodiment is an example to turn round son axle 29; be provided with overpressure protection device turning round on the son axle 29; overpressure protection device is to constitute by being located to turn round steel ball 27 and the spring 28 on the son axle 29 and be enclosed within the outer cover 30 of turning round of turning round son axle 29 outer ends, the outer end of turning round cover 30 outward withstand on the inner surface of guidance panel 25 and on guidance panel 25 correspondence be provided with key hole 2501.Be positioned at lock box 1 one ends on the son axle 29 and be connected with plectrum 17 turning round, on base plate 22, be positioned at the both sides along continuous straight runs of turning round son axle 29 and be respectively equipped with an advance and retreat clamp 31, two advance and retreat clamps 31 are arranged in the other direction, installing plate 13 is passed at the two ends of two advance and retreat clamps 31 respectively, be set with compression spring 19 respectively at rearward end that is positioned at the advance and retreat clamp 31 of turning round son axle 29 left sides and the leading section that is positioned at the advance and retreat clamp 31 of turning round son axle 29 right sides as shown in Figure 3, compression spring 19 leans respectively on two installing plates 13, the bottom of advance and retreat clamp 31 is inserted in the base plate 22 respectively and can moves on base plate 22, on the base plate 22 between two advance and retreat clamps 31 and the outside of advance and retreat clamp 31 be fixed with backup plate 24 respectively, do not swing when guaranteeing that advance and retreat clamp 31 moves.Corresponding plectrum 17 places are provided with strip shape gob 3101 on advance and retreat clamp 31, can be inserted in the strip shape gob 3101 after described plectrum 17 rotations and move to stir advance and retreat clamp 31.There is the rear portion to be inserted into control panel 5 in the control element chamber 102 in spacing gland 3 upper supports, between control panel 5 front ends and spacing gland 3 front ends, be provided with extension spring 4, the bilateral symmetry that is positioned at control panel 5 on spacing gland 3 is fixed with locator slide 63, on locator slide 63, be fixed with spacing load plate 9, can carry out spacing to the horizontal slip of control panel 5 by spacing load plate 9 and locator slide 63.Described control panel 5 and spacing load plate 9 are set on the handle axle 36, the circular hole rear side that is positioned at suit handle axle 36 on control panel 5 is communicated with screens square hole 501, be provided with a square shaft part that can snap onto in the screens square hole 501 on handle axle 36, the screens square hole 501 under the pulling of extension spring 4 on the control panel 5 can snap in the square shaft part of handle axle 36.Bottom surface, rear end at control panel 5 is connected with driver blade 18, and driver blade 18 is near the outer rim of plectrums 17 and can drive control panel 5 slide backward in lock box 1 plectrum 17 is stirred under, and above-mentioned parts constitute dead bolt unlatching controlling organization.

In lock box 1, be provided with digital code editing mechanism, digital code editing mechanism is the reseting gear group that meshes successively in the executive component chamber 101 by being located at, the carry gear train, counting gear group and carry reset Control Component and change yard clutch component and constitute, described reseting gear group, the carry gear train, counting gear group and carry reset Control Component are respectively two groups and direction and longitudinally are arranged on the contrary and turn round son axle 29 both sides, every group of reseting gear group is to pass and be inserted into two reseting gear axle 44 and uniform one group of reseting gears 43 that is fixed on the reseting gear axle 44 on the location-plate 12 by installing plate 13 respectively by two ends to constitute, every group carry gear train is to be made of a carry gear shaft 46 and a uniform group carry gear 47 that is sleeved on the carry gear shaft 46, it is to count gear 14 by a counting gear axle 16 and a uniform batch total that is sleeved on the counting gear axle 16 to constitute that every batch total is counted gear train, described carry gear shaft 46 and counting gear axle 16 two ends are passed and are installed on two location-plates 12 by installing plate 13 respectively, every group of reseting gear 43, the quantity of carry gear 47 and counting gear 14 equate and present embodiment in every group be example all with five, also can increase or reduce the quantity of every group of gear according to the requirement of secret key amount.Be provided with the cam of one in a side of each carry gear 47, what be positioned at every group carry gear 47 on base plate 22 is fixed with limiting plate 55 below by support set 56, on limiting plate 55, be evenly equipped with five isolation screw die that extend up to each carry gear 47 1 side, can carry out axial location to carry gear 47 by this isolation screw die.Corresponding each carry gear 47 place are penetrated with a carry push rod 53 respectively on base plate 22, the upper end of carry push rod 53 is passed and is withstood on the cam of carry gear 47 by limiting plate 55, on each carry gear 47, be separately installed with torsion spring 48, described torsion spring 48 1 ends are inserted on the corresponding carry gear 47, torsion spring 48 other ends are stuck on the limiting plate 55, between base plate 22 and limiting plate 55, be with compression spring 54 on the carry push rod 53, on guidance panel 25, be provided with two scheduling sign indicating number buttons 52 and peg graft with corresponding carry push rod 53 respectively.Described counting gear group is positioned at the top of advance and retreat clamp 31 respectively, and advance and retreat are evenly equipped with counting gear 14 on the clamp 31 blocks tooth 3102 one to one, radially is respectively equipped with on each counting gear 14 and blocks the draw-in groove that tooth 3102 cooperates.Described carry reset Control Component comprises the control strip 57 that resets on the backup plate 24 that is hinged on advance and retreat clamp 31 outsides, on reseting gear axle 44, be fixed with ratchet 42 near installing plate 13 places, at the middle part of reseting gear axle 44 reduction torsion spring 45 is installed, one end of reduction torsion spring 45 is stuck on the reseting gear 43, the other end is stuck on the limiting plate 55, be positioned on the installing plate 13 ratchet 42 below be hinged with carry hook 59 and undercarriage 60, carry hook 59 and ratchet 42 interlocks, be fixed with the terminal point limited block 41 that is stuck on the ratchet 42 terminal teeth on the installing plate 13, be positioned on the installing plate 13 carry hook 59 above be provided with the extension spring 58 of colluding on carry hook 59, described undercarriage 60 1 ends are pressed in an end of the control strip 57 that resets, undercarriage 60 other ends and carry hook 59 overlap joints, the other end of control strip 57 of resetting is the raised tip and strip shape gob 3101 outsides that extend to advance and retreat clamp 31, when plectrum 17 rotates to vertical state, the raised tip of the control strip 57 that resets can be depressed, make undercarriage 60 press down carry hook 59 and break away from ratchet 42.Constitute the carry reset Control Component with upper-part.

The described yard clutch component that changes comprises the clutch tooth bar piece 51 that is separately fixed at counting gear axle 16 front ends, between two clutch tooth bar pieces 51, be provided with clutch tooth bar piece 51 engagement change yard clutch gear 39, be installed with and change yard axle bed 10 changing yard clutch gear 39 centers, correspondence changes yard axle bed 10 places and is provided with respectively and changes a yard jack on upper end that changes yard axle bed 10 and inner cover plate 6, on described counting gear axle 16, be fixed with the clutch dividing plate 15 of separating counting gear 14 respectively, installing plate 13 middle parts in lock box 1 rear end are fixed with balance limited block 49, described clutch dividing plate 15 is inserted into respectively in the spacing edge-cut of balance limited block 49, parallel the moving of counting gear group when guaranteeing to change yard clutch, thus guarantee to change reset behind the sign indicating number smooth and easy.Described clutch tooth bar piece 51 is pressed in respectively on the spacing load plate 9, on clutch tooth bar piece 51, be respectively equipped with compression spring 61 and steel ball 62, corresponding steel ball 62 places are provided with two locating holes 901 respectively on spacing load plate 9, and assist location when changing yard clutch to be implemented in is further guaranteed to walk accurately.Constitute carry with upper-part and change a yard clutch component.

This mechanical code lock can be installed on the door of various security doors, safety cabinet and domestic safe.During installation, be clamped to the base plate 22 of lock box 1 and guidance panel 25 between by dog screw 21 door-plate 23 and guidance panel 25 is positioned at door-plate 23 outsides.(this moment, lock should be in opening when locking a door, be that handle 37 is in the ejection state), close door earlier, derotation handle an angle of 90 degrees then, drive three overhanging 30mm of dead bolt tooth bar by dead bolt control gear 34 during handle 37 rotations, by advancing handle 37, handle 37 is in same plane by entering the back with guidance panel 25 again.When unblanking, the key of will unblanking is inserted into outer turning round in the cover 30 by key hole 2501, the dextrorotation key (about 25 degree angles) till block of unblanking, this moment is because plectrum 17 two ends can be stuck in bar shaped 3101 edges of advance and retreat clamp 31, therefore when key is unblanked in rotation, can feel and be stuck suddenly, be pressed into coding key 52 successively according to the coded sequence that has configured then, align under draw-in groove on each counting gear 14 can rotate at this moment and with card tooth 3102, continue to rotate the key of unblanking again, drive plectrum 17 rotations by turning round son axle 29, meeting is dialled in the card tooth of the advance and retreat clamp 31 of both sides in the draw-in groove of counting gear 14 after plectrum 17 rotations, therefore the clamp 31 of advancing and retreat can not cause interference to plectrum 17 rotations, plectrum 17 two ends are moved after can producing and drive control panel 5 by the bar shaped 3101 of advance and retreat clamp 31 smoothly, handle axle 36 is shifted out by screens square hole 501, handle axle 36 and handle 37 can eject under compression spring 35 effects automatically, rotate handle 37 again and can realize unblanking, the key of unblanking when unblanking only need revolve to turn 90 degrees can realize that just handle 37 ejects.When changing yard, determine that at first lock is in open mode, to change yard key 11 is inserted and is changed in yard axle bed 10 by yard jack of changing of inner cover plate 6, derotation change yard key 11 to change motionless till, drive clutch tooth bar piece 51 and two counting gear group displacements in the other direction by changing yard clutch gear 39, displacement back counting gear 14 separates one by one with carry gear 47 and snaps in the card tooth 3102, press coding key 52 and encode this moment, behind the coding again dextrorotation change yard key 11, counting gear 14 is resetted and 47 engagements of carry gear, dial-out changes a yard key and gets final product.

Claims (5)

1. double-keyboard mechanical coded lock, comprise lock box and guidance panel, in lock box, be provided with dead bolt and open controlling organization and flexible executing agency of dead bolt and digital code editing mechanism, it is by being installed in the sub-axle of turning round of lock box base plate rear portion or lock core shaft and plectrum, stirring control panel and the advance and retreat clamp formation that can slide down at plectrum in lock box that described dead bolt is opened controlling organization; Described digital code editing mechanism is by the reseting gear group of engagement successively, the carry gear train, counting gear group and carry reset Control Component and change yard clutch component and constitute, it is characterized in that: described reseting gear group, the carry gear train, counting gear group and carry reset Control Component are respectively two groups and direction and longitudinally are arranged in rear portion in the lock box on the contrary, in lock box, be positioned at and be respectively equipped with row's carry push rod below the carry gear train, being provided with two scheduling sign indicating number buttons on guidance panel pegs graft with the carry push rod respectively, described advance and retreat clamp is two and is located at respectively between the counting gear group and lock box base plate of plectrum both sides, and the described yard clutch component that changes is a clutch tooth bar piece by the counting gear axle front end that is separately fixed at the counting gear group, be located between two clutch tooth bar pieces and with yard clutch gear that changes of clutch tooth bar piece engagement, being connected the clutch dividing plate that changes yard axle bed and be separately fixed on the described counting gear axle that changes yard clutch gear center constitutes.

2. double-keyboard mechanical coded lock according to claim 1 is characterized in that: the rear end is fixed with the balance limited block in lock box, and described clutch dividing plate is inserted into respectively in the spacing edge-cut of balance limited block.

3. double-keyboard mechanical coded lock according to claim 1, it is characterized in that: described carry reset Control Component is by reset control strip and the undercarriage that are hinged in the lock box, be installed in ratchet and reduction torsion spring on the reseting gear axle of reseting gear group, be located in the lock box and the carry hook and the terminal point limited block of ratchet interlock, and being located in the lock box and the extension spring of colluding on the carry hook constitutes, described undercarriage one end is pressed on the control strip that resets, the other end and carry hook connect.

4. double-keyboard mechanical coded lock according to claim 1, it is characterized in that: the flexible executing agency of described dead bolt is the handle axle by the base plate front portion of vertically running through lock box, be installed in the handle of handle axle outer end, be installed in the dead bolt control gear on the handle axle in the lock box, be inserted into respectively in the lock box and with three dead bolt tooth bars of dead bolt control gear engagement, and be fixed in the lock box and the spacing gland that is pressed in above the dead bolt tooth bar constitutes.

5. double-keyboard mechanical coded lock according to claim 1, it is characterized in that: on described control panel, be provided with spacing load plate, described clutch tooth bar piece is pressed in respectively on the spacing load plate, be respectively equipped with compression spring and steel ball on clutch tooth bar piece, corresponding steel ball place is provided with two locating holes respectively on spacing load plate.

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