CN209761037U - Anti-prying lock cylinder - Google Patents

Abstract

The utility model relates to a pick-proof lock core, which comprises a core shell, an inner core, a connector and a shifting head, wherein the inner core is rotatably arranged in the core shell, the inner core comprises a lock liner with a lock hole in the center and a plurality of blades arranged on two sides of the lock liner, the upper end of each blade is provided with an opening, a strip-shaped hole is axially arranged on the lock liner, a movable strip-shaped pin is arranged in the strip-shaped hole, an elastic sheet is pressed above the strip-shaped pin, and the connector is arranged on one side of the lock liner opposite to the lock hole and connected with the shifting head; when the key inserts the lockhole, the upper end of blade is opened, and the opening on each blade forms a bar groove corresponding to the bar hole, and the bar round pin falls into the bar inslot completely under the spring action of shell fragment and is connected with the connector after, rotates the lock courage transmission shifting block and rotates and unblank. The utility model discloses a simple structure needs can only unblank after the complete contact, and the pick-proof performance reinforcing uses the cooperation of shell fragment and bar round pin simultaneously to have solved the jamming problem between pellet shot from a slingshot and the spring, has also strengthened the brute force degree of difficulty of unblanking.

Description

Anti-prying lock cylinder

Technical Field

The utility model relates to a tool to lock, especially a pick-proof lock core that simple structure, can not block, can prevent powerful prizing lock.

Background

the lock is widely used in daily life, and the safety of the lock is also the focus of attention. The existing mechanical lock core mainly uses the matching of a cylinder marble and a spring. The contact surface of the marble and the lock core in the lock core is limited, the marbles are separated from each other, the marbles are easy to be opened by an unlocking tool without a matched key, the safety of the lock core cannot meet the requirements of the current society, meanwhile, the structure of the lock core is complex, the production cost is high, the failure rate is high, and the problem that the spring blocks the movement of the marble to prevent unlocking can be caused during use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a simple structure, can not block, can prevent the pick-proof lock core of powerful lock picking.

The utility model provides a technical scheme that its technical problem adopted is:

A pick-proof lock core comprises a core shell, an inner core, a connector and a shifting head, wherein the inner core is rotatably arranged in the core shell, the inner core comprises a lock liner with a lock hole in the center, and a plurality of blades which are axially and alternately arranged on two sides of the lock liner along the axial direction of the lock liner, the upper end of each blade is provided with an opening, a strip-shaped hole is axially arranged on the lock liner, a movable strip-shaped pin is arranged in the strip-shaped hole, a spring sheet which is fixed on the lock liner and is pressed against the top of the strip-shaped pin is arranged above the strip-shaped pin, and the connector is arranged on one side, opposite to the lock hole, in the; when the key inserts the lockhole, the upper end of blade is radially opened along the lock courage, each opening on the blade forms a bar groove corresponding to the bar hole, the bar round pin falls into the bar inslot completely under the spring action of shell fragment and is connected with the connector after, rotates lock courage transmission shifting block and rotates and unblank.

Preferably, the one end of bar round pin is the connecting portion of being connected with the connector, and the other end is that the lower part of cross-section upper portion for the bar is trapezoidal block portion of falling, open-ended lower part is the block cooperation portion that matches the block with block portion, and the degree of depth of block cooperation portion is not less than the height of block portion, be equipped with the recess of width adaptation in bar round pin width on the connector, connecting portion block in the recess when block portion falls into block cooperation portion completely.

preferably, the two blades are flatly attached to form a scissors-shaped buckle, the lock cylinder is provided with a plurality of scissors-shaped buckles at intervals along the axial direction of the lock cylinder, two blades of each scissors-shaped buckle are respectively provided with a clamping foot, and the two clamping feet are oppositely arranged and connected through a spring; when the key is inserted into the keyhole, the corresponding key tooth opens or closes the two clamping feet of the corresponding scissors-shaped buckle, and the spring deforms to enable the openings at the upper ends of the two blades to form a strip-shaped groove corresponding to the strip-shaped hole.

Preferably, a first through hole corresponding to the lock hole for inserting the key is formed in the middle of each blade of the scissors-shaped buckle, and a sliding block corresponding to the sliding on the key is arranged on the upper wall and/or the lower wall of the first through hole.

Preferably, the left side and the right side of each opening are provided with strip-shaped second through holes in the left-right direction, and the two pins correspondingly penetrate through the second through holes in the left side and the right side to be fixedly connected with the lock cylinder and limit the movement of the blade on the lock cylinder.

Preferably, two sets of inner cores and connectors are arranged in the core shell, and the two connectors are correspondingly connected to two sides of the same shifting block.

Preferably, the tail end of the connector is provided with a poking pin.

Preferably, a clamp spring is arranged between the connecting head and the shifting block.

preferably, the elastic sheet is a cross-shaped elastic sheet, the long side of the elastic sheet is correspondingly pressed on the strip-shaped pin, and the short side of the elastic sheet is fixedly connected to the lock cylinder.

Preferably, the inner core is provided with a key, the key teeth of the key are wavy grooves formed in the surface of a key rod, the key rod is inserted into the wavy grooves to expand the blades to form strip-shaped grooves, and the blades are provided with sliding blocks sliding in the wavy grooves.

the beneficial effects of the utility model reside in that: the utility model discloses a simple structure uses bar round pin and shell fragment, and the area of contact of bar round pin is big, just can unblank after the complete contact, and pick-proof performance strengthens, uses the cooperation of shell fragment and bar round pin simultaneously, and the shell fragment supports to press and can not produce the card to hinder to the motion of bar round pin and lock courage on the bar round pin, has solved the trouble problem such as card between pellet shot from a slingshot and the spring hinders in traditional mechanical lock core, has further strengthened the brute force degree of difficulty of unblanking, and the security of lock core is strengthened.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a bar pin according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the scissors-shaped buckle in the embodiment of the present invention;

FIG. 4 is a schematic view of the embodiment of the present invention showing the blade in the lock housing after insertion of a key;

FIG. 5 is a schematic view of the inner portion of the lock case after the key is inserted;

FIG. 6 is a schematic view of the embodiment of the present invention showing the blade in the lock housing with no key inserted;

part names and serial numbers in the figure: 1-core shell 2-inner core 20-lock liner 21-blade 200-lockhole 201-strip-shaped hole 210-opening 211-bayonet catch 212-first through hole 213-slider 214-second through hole 2100-snap fit part 3-connector 30-groove 31-shift pin 32-circlip 4-shift 5-strip-shaped pin 50-connecting part 51-snap fit part 6-shrapnel 7-key-70-wave-shaped groove 8-spring 9-pin.

Detailed Description

To illustrate the objects, technical solutions and advantages of the present invention more clearly, the present invention will be further described with reference to the accompanying drawings and examples, and it is obvious that the described examples are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the utility model is shown in fig. 1 to fig. 6, a pick-proof lock core, which comprises a core shell 1, an inner core 2 rotatably arranged in the core shell 1, a connector 3 and a shifting block 4, the purpose of unlocking or locking is achieved by the rotation of the inner core 2 in the core shell 1, the inner cores with different numbers can be designed according to the requirement, one set of inner core 2 can be provided, or two sets of inner cores 2 and two connectors 3 are arranged in the core shell 1, the two connectors 3 are correspondingly connected with the two sides of the same shifting block 4, the two sets of inner cores 2 and the two connectors 3 can be unlocked on two sides for convenient use, the inner core 2 comprises a lock core 20 with a lock hole 200 at the center, a plurality of blades 21 axially and crossly arranged at the two sides of the lock core 20, the blades 21 are crossly arranged at the two sides of the lock core 20, so that one blade 21 at the same side is mixed with the two blades 21, the two adjacent blades 21 are staggered, each blade 21 is provided with a corresponding sliding block as the blades in the traditional mechanical lock core, a staggered code type arrangement is formed between the blades 21, the lock can be unlocked only through a matched key, the safety of the lock is ensured, the blades 21 can be arranged on the lock liner 20 by arranging holes corresponding to the blades 21 or gaps corresponding to the blades 21 on the lock liner 20, different settings can be carried out according to production conditions, the upper end of each blade 21 is provided with an opening 210, a strip-shaped hole 201 is axially arranged on the lock liner 20, a movable strip-shaped pin 5 is arranged in the strip-shaped hole 201, the strip-shaped hole 201 is used as an accommodating cavity of the strip-shaped pin 5, the strip-shaped pin 5 can completely fall out of the strip-shaped hole 201 and can also be pushed back into the strip-shaped hole 201 under the action of external force, an elastic sheet 6 which is fixed on the lock liner 20 and is abutted against the top of the bar-shaped pin 5 is arranged above the bar-shaped pin 5, so that in the locked state, the elastic sheet 6 is compressed, the bar-shaped pin 5 can be assisted to fall out of the bar-shaped hole 201 through the elastic force of the elastic sheet 6 in unlocking, the bar-shaped pin 5 can be prevented from falling out of the bar-shaped hole 201 from the other side when being pushed back to the bar-shaped hole 201, meanwhile, the elastic sheet 6 can be extended in the bar-shaped hole 201 in unlocking, the rotation of the lock liner 20 cannot be hindered, the blocking phenomenon cannot be generated, and the connector 3 is arranged on one side, opposite to the lock hole 200, in the lock liner 20 and is connected with the shifting head 4; when the key 7 inserts the lockhole 200, radial motion is done in blade 21 cooperation key 7, and dislocation between the two has been eliminated to the side by side position to adjacent two blade 21 motion, the upper end of blade 21 is radially opened along the lock courage 20, each this moment opening 210 on the blade 21 has just formed a bar groove corresponding to bar hole 201, bar round pin 5 falls into the bar inslot completely under the spring action of shell fragment 6, after bar round pin 5 falls into the bar inslot completely, bar round pin 5 is connected with connector 3, just transmits to shifting block 4 through bar round pin 5 and connector 3 after rotating lock courage 20, makes shifting block 4 rotate and unblanks. Such lock core simple structure uses bar round pin 5 and shell fragment 6, and the area of contact of bar round pin 5 is big, just can unblank after the complete contact, and pick-proof performance strengthens, uses the cooperation of shell fragment 6 and bar round pin 5 simultaneously, and shell fragment 6 supports presses and can not produce the card to the motion of bar round pin 5 and lock courage 20 on bar round pin 5 and hinder, has solved trouble problems such as the card hinders between pellet shot from a slingshot and the spring in traditional mechanical lock core, has further strengthened the degree of difficulty of picking the lock, and the security of lock core is strengthened.

In a further improvement, as shown in fig. 2, one end of the bar-shaped pin 5 is a connecting portion 50 connected with the connecting head 3, the other end is a clamping portion 51 with a bar-shaped upper portion and an inverted trapezoid lower portion, the end of the clamping portion 51 is formed with a slope, which facilitates the bar-shaped pin 5 to fall into or push out of the bar-shaped groove, the bar-shaped pin 5 can be connected with the connecting head 3 while being in full contact with the bar-shaped groove by the arrangement of the connecting portion 50 and the clamping portion 51, and the inverted trapezoid structure of the clamping portion 51 facilitates the blade 21 to push the bar-shaped pin 5 to withdraw from the bar-shaped groove after the key 7 is pulled out from the lock hole 200, as shown in fig. 3, the lower portion of the opening 210 is a clamping portion 2100 in matching engagement with the clamping portion 51, and the depth of the clamping portion is not less than the height of the clamping portion 51, which means that the clamping portion 2100 is also inverted trapezoid in cross section, and the depth of the clamping portion 51 is not less than the height of the clamping portion 2100, connecting portion 50 is connected with connector 3, just make shifting block 4 can rotate, and when block portion 51 completely falls into card and cooperation portion 2100, connecting portion 50 is not connected on connector 3, lock courage 20 can rotate but idle running state, can't drive shifting block 4 pivoted through bar pin 5 and connector 3 transmission to shifting block 4, shifting block 4 can't rotate and just can't unblank, as shown in fig. 1 again, in order to cooperate connecting portion 50 and being connected of connector 3, be equipped with width adaptation in the recess 30 of bar pin 5 width on connector 3, connecting portion 3 blocks in recess 30 when block portion 51 falls into block cooperation portion 2100 completely, the width of recess 30 matches the width of bar pin 5 on connector 3, after bar pin 5 blocks in recess 30, just can not influence owing to connect unstable swing production and unblank.

In a further development, as shown in figures 1, 3 to 6, the blade 21 is also one of the important parts for the security of the lock, for better anti-picking and anti-theft, the two blades 21 are flatly attached to form a scissors-shaped buckle, the two blades 21 can relatively move to eliminate dislocation, so that the opening 210 at the upper end of the blades can form a strip-shaped groove, the lock core 20 is provided with a plurality of scissors-shaped buckles at intervals along the axial direction of the lock core 20, the safety of the lock can be better improved by arranging the plurality of buckles, the lock can be unlocked only when the plurality of buckles form a strip-shaped groove in parallel, the strip-shaped pin can not fall into the strip-shaped groove completely as long as one buckle is staggered, therefore, the lock can not be unlocked, the two blades 21 of each scissors-shaped buckle are respectively provided with a clamping foot 211, the two clamping feet 211 are oppositely arranged and are connected through a spring 8, only then can the two blades 21 be automatically opened or closed through the spring 8 after the key 7 is pulled out; when the key 7 is inserted into the keyhole, the blade 21 moves along with the key teeth on the key 7, the corresponding key teeth open or close the two clamping feet 211 of the corresponding scissors-shaped buckle, the spring 8 deforms to enable the openings 210 at the upper ends of the two blades 21 to be arranged in parallel to form a strip-shaped groove corresponding to the strip-shaped hole 201, and therefore the formed strip-shaped groove faces the strip-shaped hole 201, the strip-shaped pin 5 is guaranteed to smoothly fall into or be pushed out of the strip-shaped groove, and the phenomena of faults such as blocking and the like are avoided. At this time, a first through hole 212 corresponding to the lock hole 200 for inserting the key 7 is formed in the middle of each blade 21 of the scissors-shaped buckle, a slider 213 corresponding to the key 7 to slide is arranged on the upper wall and/or the lower wall of the first through hole 212, and the keys 7 can be conveniently connected in series through the first through hole 212 to achieve the purpose of unlocking. In order to enable the blade 21 mounted on the cylinder core 20 to be opened or closed smoothly without falling off from the cylinder core, the left and right sides of each opening 210 are provided with left and right strip-shaped second through holes 214, two pins 9 correspondingly penetrate through the left and right second through holes 214 to be fixedly connected with the cylinder core 20 and limit the movement of the blade 21 on the cylinder core 20, at this time, the pins 9 are fixed on the cylinder core 20, the blade 21 is not fixed but cannot fall off from the cylinder core 20 due to the existence of the pins 9, the left and right strip-shaped second through holes 214 ensure the radial movement of the blade 21 on the cylinder core 20, and limit the movement of the blade 21 according to the matching of the blade 21 and the key 7.

In a further improvement, as shown in fig. 1 and 5, a shifting pin 31 is provided at the tail end of the connecting head 3, and the shifting pin 31 enables the smooth transmission shifting block 4 of the connecting head 3 to rotate to unlock. Simultaneously be provided with jump ring 32 between connector 3 and the shifting block 4, just so make connector 3 can be better be connected with shifting block 4, guarantee connection structure's between the two stability, can not produce the problem of bad connection and influence the use of lock.

In a further improvement, as shown in fig. 1 and 5, the elastic sheet 6 is a cross-shaped elastic sheet, the long side of the cross-shaped elastic sheet correspondingly abuts against the bar-shaped pin 5, and the short side of the cross-shaped elastic sheet is fixedly connected to the lock core 20, so that the elastic sheet 6 does not have a part protruding out of the surface of the lock core 20, the long side abuts against the bar-shaped pin 5, namely, the long side is located within the range of the bar-shaped hole 201, and the short side is fixed to the lock core 20, so that the rotation of the lock core 20 is not hindered during the rotation of the lock core 20, and the blocking.

In a further improvement, as shown in fig. 1 and 6, since the staggered arrangement of the blades 21 in the core 2 ensures the safety of the lock, the core 2 is provided with a key 7, the teeth of the key 7 are wave-shaped grooves 70 formed on the surface of the key rod, the blades 21 are provided with sliders 213 sliding in the wave-shaped grooves 70, the blades 21 slide along the wave-shaped grooves 70 when the key rod is inserted, the upper ends of the blades 21 are opened, and the openings 210 at the upper ends form strip-shaped grooves.

The anti-picking lock cylinder of the present invention has been described above for the purpose of promoting understanding of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and it should be understood that any changes, modifications, substitutions, combinations, and simplifications which do not depart from the principle of the present invention will be equivalent to those skilled in the art, and they are all included in the scope of the appended claims.

Claims (10)

1. An anti-prying lock cylinder is characterized in that: the inner core comprises a lock liner with a lock hole in the center and a plurality of blades which are axially and alternately arranged on two sides of the lock liner along the axial direction of the lock liner, the upper end of each blade is provided with an opening, the lock liner is provided with a strip-shaped hole along the axial direction, a movable strip-shaped pin is arranged in the strip-shaped hole, a spring sheet which is fixed on the lock liner and is pressed against the top of the strip-shaped pin is arranged above the strip-shaped pin, and the connector is arranged on one side, opposite to the lock hole, in the lock liner and connected with the shifting head; when the key inserts the lockhole, the upper end of blade is radially opened along the lock courage, each opening on the blade forms a bar groove corresponding to the bar hole, the bar round pin falls into the bar inslot completely under the spring action of shell fragment and is connected with the connector after, rotates lock courage transmission shifting block and rotates and unblank.

2. The anti-picking lock cylinder according to claim 1, characterized in that: the one end of bar round pin is the connecting portion of being connected with the connector, and the other end is that the lower part of cross-section upper portion for the bar is trapezoidal block portion of falling, open-ended lower part is the block cooperation portion that matches the block with block portion, and the degree of depth of block cooperation portion is not less than the height of block portion, be equipped with the recess of width adaptation in bar round pin width on the connector, connecting portion block in the recess when block portion falls into block cooperation portion completely.

3. The anti-picking lock cylinder according to claim 1, characterized in that: the two blades are flatly attached to form a scissors-shaped buckle, the lock cylinder is provided with a plurality of scissors-shaped buckles at intervals along the axial direction of the lock cylinder, two blades of each scissors-shaped buckle are respectively provided with a clamping foot, and the two clamping feet are oppositely arranged and connected through a spring; when the key is inserted into the keyhole, the corresponding key tooth opens or closes the two clamping feet of the corresponding scissors-shaped buckle, and the spring deforms to enable the openings at the upper ends of the two blades to form a strip-shaped groove corresponding to the strip-shaped hole.

4. the anti-picking lock cylinder according to claim 3, characterized in that: the middle of each blade of the scissors-shaped buckle is provided with a first through hole which corresponds to the lock hole and enables a key to be inserted, and the upper wall and/or the lower wall of the first through hole are/is provided with a sliding block which corresponds to the sliding block on the key.

5. The anti-picking lock cylinder according to claim 1, characterized in that: every open-ended left and right sides all is equipped with the second through-hole of the bar of left and right sides direction, and two pins correspond the second through-hole that passes the left and right sides and lock courage fixed connection and spacing the activity of blade on the lock courage.

6. The anti-picking lock cylinder according to claim 1, characterized in that: two sets of inner cores and connectors are arranged in the core shell, and the two connectors are correspondingly connected to two sides of the same shifting block.

7. The anti-picking lock cylinder according to claim 1, characterized in that: the tail end of the connector is provided with a poking pin.

8. The anti-picking lock cylinder according to claim 1, characterized in that: and a clamp spring is arranged between the connector and the shifting block.

9. The anti-picking lock cylinder according to claim 1, characterized in that: the elastic sheet is a cross-shaped elastic sheet, the long edge of the elastic sheet is correspondingly pressed on the strip-shaped pin, and the short edge of the elastic sheet is fixedly connected to the lock liner.

10. The anti-picking lock cylinder according to claim 1, characterized in that: the inner core is matched with a key, key teeth of the key are wavy grooves formed in the surface of a key rod, the key rod is inserted into the wavy grooves to enable blades to be opened to form strip-shaped grooves, and sliding blocks sliding in the wavy grooves are arranged on the blades.