CN202544531U

CN202544531U - Safety lock

Info

Publication number: CN202544531U
Application number: CN2012201349891U
Authority: CN
Inventors: 张春贺
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2012-11-21
Anticipated expiration: 2022-04-01

Abstract

The utility model relates to a safety lock. A lock cylinder is divided into three sections, a sleeve is fixedly connected with a rear lock cylinder through screws, a pin A is inserted into grooves of excircles of a front lock cylinder and a middle lock cylinder, and four marbles are arranged in the sleeve; the middle lock cylinder and the rear lock cylinder are internally provided with rectangular holes A and B, two rectangular bars A with the same cross-section and length are arranged in the rectangular hole A and prop against a spring; the middle lock cylinder is provided with a small shaft and is fixedly provided with a clamping hook, two rectangular bars B with different cross-sections and lengths are arranged in the rectangular hole B and prop against the rectangular bars A, and the other ends of the rectangular bars B are provided with gaps with different lengths; the front lock cylinder and the middle lock cylinder are fixed by pins B, and the front lock cylinder is internally provided with a round hole; a key is provided with a plurality of cylindrical claws corresponding to holes of the lock cylinders, the cylindrical claws are different in length, the length of stepped openings at the ends of the cylindrical claws correspond to the length of the gaps of the rectangular bars B, and the cylindrical claws are provided with a shallow notch groove; and when the key is inserted into the lock cylinder to make an interface be overlapped with an end face, marbles are clamped into the shallow notch groove, and the key can be rotated for unlocking. The safety lock has the advantages of simple structure, low mutual unlocking rate and good anti-theft effect.

Description

Safety lock

Technical field

The utility model relates to a kind of lock, particularly a kind ofly is convenient to make, the safety lock that difficulty is big and mutual opening rate is low of technology unlocking.

Background technology

At present, the lock core that uses on the market is of a great variety, and its internal construction is basic identical; The mutual opening rate of lock is high; As long as lockhole is interior just possibly opened no matter key size can inject with shape, because of lock core has certain rules, as long as even have a look at key; Make a key again and just can unblank, anti-theft feature is very low.

Summary of the invention

The utility model provides a kind of and is convenient to make for solving the technical problem that exists in the known technology, the safety lock that difficulty is big and mutual opening rate is low of technology unlocking.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: safety lock includes lock core and key, it is characterized in that:

1.. lock core comprises: sleeve, rear lock core, middle lock core and preceding lock core; Sleeve has screw and rear lock core is fixed along axis; Two other A pin is inserted in respectively in the arc groove of middle lock core and preceding lock core cylindrical 1/4th; Pin and arc groove sliding fit radially have four pellets shot from a slingshot that are mutually 90 ° in the sleeve, the rearward end of sleeve is fixed with cover plate with screw; Have the A rectangular opening that is mutually five equilibrium in the rear lock core vertically, be placed with two A rectangular strips that the cross section equal length is also identical in each A rectangular opening respectively, spring is laid in the rear end of its A rectangular strip; One end of middle lock core has little axle; Little axle is integral with middle lock core, pass in the circular aperture of described little axle in the core of back and little axle measure-alike with circular hole, little the tip of the axis mills out flat groove and is inserted in grab; One end of grab has the hook other end with the screw-threaded coupling on nut and the little axle; In have the B rectangular opening that is mutually five equilibrium vertically in the lock core, respectively be placed with two in the B rectangular opening respectively the cross section be identical and B rectangular strip that length is different, an end of the B rectangular strip of per two different lengths respectively with the A rectangular opening in the A rectangular strip withstand after; The other end of per two B rectangular strips just forms the breach of different length, and described A rectangular opening equates with the big or small position of B rectangular opening; Middle lock core and preceding lock core link into an integrated entity through two B pin crosswise fixed, in the corresponding aperture of lock core, in the lock core, have the circular hole that is mutually five equilibrium in the preceding lock core vertically before each pellet shot from a slingshot all stretches out before four pellets shot from a slingshot on the sleeve pass respectively;

2.. have on the disk of key and the corresponding cylindrical pawl of lock core hole; The length of each cylindrical pawl is different; The front end of its end cuts out the ladder mouth of different length; Also have 30 ° of grooves, the notch length of the B rectangular strip that the length of its ladder mouth is different with the interior length of the B rectangular opening of lock core is corresponding, and the middle part of each cylindrical pawl has the light engraving groove.

The utility model can also adopt following technical scheme:

Described pellet shot from a slingshot is that two of using little spring to head on are one group of formation;

Having vertically in described rear lock core, the middle lock core and having the circular hole that is mutually five equilibrium vertically in the A rectangular opening that is mutually five equilibrium and the preceding lock core is 2-7 holes, and the circular hole in A rectangular opening, B rectangular opening and the preceding lock core is correspondence each other;

The cylindrical pawl that has on the disk of described key is corresponding with lock core hole to be 2-7.

Advantage and the good effect that the utlity model has are: simple in structure; The unicity that has broken away from original lock core structure; Key at first will overcome the pellet shot from a slingshot resistance when injecting lock core; After inserting A, B rectangular strip in each hole of lock core more inward and putting in place, 90 ° of the keys of promptly turning clockwise this moment, preceding lock core, middle lock core, B rectangular strip and pellet shot from a slingshot are inserted before part in the lock core rotate simultaneously.Can rotate lock is opened, mutual opening rate is low, and the difficulty of technology unlocking is big, good anti-theft effect.

Description of drawings

Fig. 1 is the whole structural representation of lock core;

Fig. 2 is the plan structure sketch map of Fig. 1;

Fig. 3 is the left TV structure sketch map of Fig. 1;

Fig. 4 is A-A sectional structure sketch map of Fig. 1;

Fig. 5 is B-B sectional structure sketch map of Fig. 1;

Fig. 6 is C-C sectional structure sketch map of Fig. 1;

Fig. 7 is the structural representation of key;

Fig. 8 is the plan structure sketch map of Fig. 7;

Fig. 9 is the left TV structure sketch map of Fig. 7.

Among Fig. 1-Fig. 9: 1. sleeve, 2. rear lock core, 3. in lock core, 4. before lock core,

5. screw, the 6.A pin, 7. arc groove, 8. pellet shot from a slingshot, 9. cover plate, 10. A rectangular strip,

11. spring, 12. little axles, 13. grabs, 14. B rectangular strips, 15. B pin,

16. circular hole, 17. keys, 18. disks, 19. cylindrical pawls, 20. ladder mouths,

21. the light engraving groove, 22. grooves, 23. interfaces, 24.B rectangular strip rear end face.

The specific embodiment

For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:

With lock core hole is that four safety lock is explained for example: like Fig. 1-shown in Figure 3: lock core comprises: sleeve 1, rear lock core 2, middle lock core 3 and preceding lock core 4; It is fixing with rear lock core 2 that sleeve 1 has screw 5 along axis; Like Fig. 5, shown in Figure 6: during two A pins 6 are inserted in respectively in the arc groove 7 of lock core 3 and preceding lock core 4 cylindricals 1/4th; Pin 6 and arc groove 7 sliding fits; Pin 6 slided in arc groove 7 when central lock core 3 rotated with preceding lock core 4 together, with lock core in preventing 3 and 4 dislocation of preceding lock core, radially had four pellets shot from a slingshot 8 that are mutually 90 ° in the sleeve 1; Pellet shot from a slingshot 8 is that two of using little spring to head on are one group of formation, and the rearward end of sleeve 1 is fixed with cover plate 9 with screw; As shown in Figure 4: axially have four rectangular openings of A that are mutually 90 ° in the rear lock core 2, be placed with two A rectangular strips 10 that the cross section equal length is also identical in per four A rectangular openings respectively, spring 11 is laid in the rear end of its A rectangular strip 10; One end of middle lock core 3 has little axle 12; Little axle 12 is an one with middle lock core 3; Pass in the circular aperture of described little axle in the core of back and little axle measure-alike with circular hole, the end of little axle 12 mills out flat groove and is inserted in grab 13, an end of grab 13 has hook and uses nut check; As shown in Figure 5: as also to have four rectangular openings of B that are mutually 90 ° in the middle lock core 3 vertically; Be placed with two in four rectangular openings of every B respectively the cross section be identical and B rectangular strip 14 that length is different, an end of the B rectangular strip 14 of per two different lengths respectively with the A rectangular opening in A rectangular strip 10 withstand after, the other end of per two B rectangular strips 14 just forms the breach of different length; In lock core 3 and preceding lock core 4 link into an integrated entity through two B, 15 crosswise fixed of pinning; Rotate together to guarantee them; Four pellets shot from a slingshot 8 of two one group that head on little spring on the sleeve 1 pass respectively in the corresponding aperture of preceding lock core 4; Before stretching out, each pellet shot from a slingshot 8 in the lock core 4, axially has four circular holes 16 that are mutually 90 ° in the preceding lock core 4; Like Fig. 7-shown in Figure 9: have on the disk 18 of key 17 and corresponding four the cylindrical pawls 19 of lock core hole; Each cylindrical pin 19 length different; Its end cuts out ladder mouth 20, and the ladder mouth length of the B rectangular strip 14 that length is different in four rectangular openings of the length of its ladder mouth 20 and the B of lock core is corresponding, and the length of each cylindrical pawl 19 is different; The front end of its end has 30 ° of grooves 22; Groove 22 back cut out the ladder mouth 20 of different length, and the notch length of the B rectangular strip 14 that the length of its ladder mouth 20 is different with the interior length of the B rectangular opening of lock core is corresponding, and the middle part of each cylindrical pawl 19 has light engraving groove 21.

During use, in the corresponding aperture of lock core 4, the groove 22 of four cylindrical pawl 19 front ends backed down pellet shot from a slingshot 8 before four cylindrical pawls 19 on the key 17 inserted; Make in the pellet shot from a slingshot 8 holddown spring indentation pellet shot from a slingshot holes, at this moment, four cylindrical pawls 19 can continue to inject the corresponding aperture of lock core 4; Because of the front end ladder mouth 20 of four cylindrical pawls 19 is uneven in length, the ladder mouth length of the B rectangular strip 14 that it must be different with length corresponding and identical after, just can make four cylindrical pawls 19 together oppress the motion simultaneously inwards of the different B rectangular strip 14 of four group length; Compression spring 11; And the B rectangular strip rear end face 24 that four group length are different can be on the same facade, and when they move to when this facade is overlapped with the interface 23 of middle lock core 3, pellet shot from a slingshot 8 just is stuck in four light engraving grooves 21 on the cylindrical pawl 19; Light engraving groove 21 has played positioning action; Middle lock core 3 could be accompanyed or follow the key 17 that has four cylindrical pawls 19 with preceding lock core 4 and turn clockwise 90 ° together, 90 ° of the keys of promptly turning clockwise this moment, and lock core 4, middle lock core 3, B rectangular strip 14 and pellet shot from a slingshot 8 insert preceding lock core 4 interior parts and rotate simultaneously before making; Simultaneously; Under the drive of little axle 12 rotations on the middle lock core 3, make grab 13 stir the unlocking mechanism in the lock, open lock.

Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. safety lock, it comprises lock core and key, it is characterized in that:

1.. lock core comprises: sleeve (1), rear lock core (2), middle lock core (3) and preceding lock core (4); It is fixing with rear lock core (2) that sleeve (1) has screw (5) along axis; Two other A pin (6) is inserted in respectively in the arc groove (7) of middle lock core (3) and preceding lock core (4) cylindrical 1/4th; Pin (6) and arc groove (7) sliding fit radially have four pellets shot from a slingshot (8) that are mutually 90 ° in the sleeve (1), the rearward end of sleeve (1) is fixed with cover plate (9) with screw; Have the A rectangular opening that is mutually five equilibrium in the rear lock core (2) vertically, be placed with two A rectangular strips (10) that the cross section equal length is also identical in each A rectangular opening respectively, spring (11) is laid in the rear end of its A rectangular strip (10); One end of middle lock core (3) has little axle (12); Little axle (12) is integral with middle lock core (3); Pass in the circular aperture of described little axle (12) in the back core (2) and little axle measure-alike with circular hole; The end of little axle (12) mills out flat groove and is inserted in grab (13), and an end of grab (13) has the hook other end with the screw-threaded coupling on nut and the little axle (12), has the B rectangular opening that is mutually five equilibrium in the middle lock core (3) vertically; Be placed with two in each B rectangular opening respectively the cross section is identical and B rectangular strip (14) that length is different; One end of the B rectangular strip (14) of per two different lengths respectively with the A rectangular opening in A rectangular strip (10) withstand after, the other end of per two B rectangular strips (14) just forms the breach of different length, described A rectangular opening equates with the big or small position of B rectangular opening; In lock core (3) and preceding lock core (4) link into an integrated entity through two B (15) crosswise fixed of pinning; Four pellets shot from a slingshot (8) on the sleeve (1) pass respectively in the corresponding aperture of preceding lock core (4); Each pellet shot from a slingshot (8) all stretches out in the preceding lock core (4), has the circular hole (16) that is mutually five equilibrium in the preceding lock core (4) vertically;

2.. have and the corresponding cylindrical pawl of lock core hole (19) on the disk (18) of key (17); The length of each cylindrical pawl (19) is different; The ladder mouth (20) that the front end of its end cuts out different length has 30 ° of grooves (22); The notch length of the B rectangular strip (14) that the length of its ladder mouth (20) is different with the interior length of the B rectangular opening of lock core is corresponding, and the middle part of each cylindrical pawl (19) has light engraving groove (21).

2. safety lock according to claim 1 is characterized in that: described pellet shot from a slingshot (8) is that two of using little spring to head on are one group of formation.

3. safety lock according to claim 1; It is characterized in that: having vertically in described rear lock core (2), the middle lock core (3) and having the circular hole (16) that is mutually five equilibrium vertically in A rectangular opening, B rectangular opening and the preceding lock core (4) that is mutually five equilibrium all is 2-7 holes, and circular hole (16) center in A rectangular opening, B rectangular opening and the preceding lock core (4) should be corresponding each other.

4. safety lock according to claim 1 is characterized in that: the cylindrical pawl (19) that has on the disk (18) of described key (17) is corresponding with lock core hole to be 2-7.