CN214195888U - Lock core with transverse grid structure and key thereof - Google Patents

Abstract

The utility model relates to a lock core with a cross bar structure and a key thereof, which comprises a lock shell, a pulling mop movably arranged in an open slot at the middle part of the lock shell, a lock liner arranged in the lock shell at the two sides of the pulling mop and a spring component arranged between the lock shell and the lock liner, wherein the lock liner is provided with a cross bar groove with an outward opening, the cross bar groove is internally provided with a cross bar, the cross bar is provided with a plurality of first locking springs protruding outwards, the lock shell is internally provided with an inserting hole matched with the first locking springs, the lock liner is internally provided with a plurality of side balls in a sliding way, the side balls are provided with openings, and the lock liner is also internally provided with a reset spring; the lock cylinder has the advantages of ingenious design, simple and small mechanism, effective prevention of the lock cylinder from being pulled out, and greatly improved anti-theft performance.

Description

Lock core with transverse grid structure and key thereof

Lock core with transverse grid structure and key thereof

[ technical field ] A method for producing a semiconductor device

The utility model relates to a tool to lock field, especially a lock core and key with horizontal bars structure.

[ background of the invention ]

In the prior art, the lock core is inserted in the lock shell and is prevented from being pulled out through structures such as the separation blade, but the lock core is easily pulled out after the separation blade is damaged, the anti-theft performance is poor, and great potential safety hazards exist.

Therefore, the invention patent with the publication number of CN110630102A discloses an anti-theft lock core and a key thereof, wherein the lock core comprises a lock shell and a lock liner, a spring assembly is arranged between the lock liner and the lock shell, the spring assembly extends into a key hole, a transverse grid assembly is also arranged between the lock liner and the lock shell, and the transverse grid assembly comprises side beads, a locking column, a transverse grid and the like; the surface of the lock core is provided with a side bead groove and a transverse grid groove, the side beads are longitudinally arranged in the side bead groove in a sliding manner, the surface of each side bead is provided with a side bead leg and a transverse steel bead groove, and the side bead leg extends into the key hole; the transverse grid is transversely arranged in the transverse grid groove in a sliding manner, the inner side of the transverse grid is provided with a longitudinal steel ball groove, and steel balls are arranged between the transverse steel ball groove and the longitudinal steel ball groove; the inner wall of the lock liner hole is provided with a transverse sliding groove and an annular groove which are mutually communicated, and the locking column is arranged on the outer side of the transverse grid and extends into the transverse sliding groove or the annular groove. The anti-theft lock cylinder adopts two forms of a spring assembly and a transverse grid assembly to be locked in a composite mode, the key amount is large, and keys corresponding to the lock cylinders cannot be exchanged to unlock.

Although the above-mentioned patent discloses a certain degree of anti-theft effect compared with the prior art, the following problems exist: one is as follows: the structure is complex, the installation is difficult, the transverse grid is required to enter a specific position during unlocking, the locking column can rotate to unlock after entering the annular groove, and the unlocking accuracy and stability are low; secondly, only double locking is adopted, and the anti-theft performance is insufficient.

The prior art does not meet our needs.

[ Utility model ] content

In order to solve the problem, the utility model provides a prevent lock core and key that have horizontal bars structure of extracting.

In order to achieve the above object, the utility model provides a following technical scheme:

a lock core with a transverse bar structure comprises a lock shell, a pulling mop, a lock liner and a spring component, wherein the pulling mop is movably arranged in an open slot in the middle of the lock shell, the lock liner is arranged in the lock shell on two sides of the pulling mop, the spring component is arranged between the lock shell and the lock liner, a transverse bar groove with an outward opening is arranged on the lock liner, a transverse bar is arranged in the transverse bar groove, a plurality of first locking springs protruding outwards are arranged on the transverse bar, insertion holes matched with the first locking springs are arranged in the lock shell, a plurality of side balls are arranged in the lock liner in a sliding mode, openings are formed in the side balls, and a reset spring is also arranged in the lock liner; when a correct key is inserted, an accommodating groove for accommodating the transverse bar is formed on a straight line by the plurality of openings, when the lock cylinder rotates, the inner wall of the lock shell is contacted with the first locking marble to enable the transverse bar to enter the accommodating groove, so that the lock cylinder rotates relative to the lock shell and achieves unlocking, and when the key is pulled out, the reset spring drives the side balls to reset to enable the plurality of openings not to be on a straight line.

As a preferred embodiment, further defined is: the two sides of the transverse grid are provided with extending portions, the two sides of the transverse grid groove are provided with spring holes, a first spring is arranged in each spring hole, one end of the first spring abuts against the bottom of each spring hole after assembly, and the other end of the first spring abuts against the extending portions.

As a preferred embodiment, further defined is: the lock core is internally provided with a key hole, the lock core is also provided with a plurality of side bead holes positioned at the lower end of the key hole, the side beads are arranged in the side bead holes in a sliding manner, and the side bead holes are communicated with the key hole.

As a preferred embodiment, further defined is: and one end of the side bead, which is deviated from the opening, is provided with a guide post which is assembled and then extends into the key hole.

As a preferred embodiment, further defined is: the reset spring is arranged in the side bead hole, one end of the reset spring is abutted to the bottom of the side bead hole after assembly, and the other end of the reset spring is abutted to the end face of the side bead on one side of the guide post.

As a preferred embodiment, further defined is: the lock core is kept away from set up a plurality of installation cavity on key hole opening one side global, be provided with on the outer peripheral face of lock shell a plurality of with the first through-hole that the installation cavity is aligned mutually, the installation cavity bottom be provided with the communicating second through-hole of key hole, be provided with second locking pellet shot from a slingshot in the installation cavity, be provided with on the second locking pellet shot from a slingshot and insert after the assembly and establish first portion of inserting in the second through-hole, still be provided with the cover in the installation cavity and establish the third spring in first portion of inserting periphery, the one end of third spring is supported on the second locking pellet shot from a slingshot, the other end of third spring supports the bottom in installation cavity.

As a preferred embodiment, further defined is: the lock shell is also internally provided with a double-rotating device, the poking and pulling sleeve is sleeved on the double-rotating device, the poking and pulling sleeve is provided with a third through hole with two open sides, the inner wall of the third through hole is provided with a rib, the rib is provided with two first openings which are oppositely arranged, and the lock cylinder can be linked with the poking and pulling sleeve or idle relative to the poking and pulling sleeve through the double-rotating device; the double-rotation device comprises a clutch piece and a rotation key which are symmetrically arranged, and the rotation key is provided with a first boss which is inserted into the first opening after being assembled; the two clutch pieces are fixedly connected together through a connecting piece; when the lock core on one side is inserted with the correct key, the lock core is linked with the poking mop through the double rotating devices, and the lock core on the other side, which is not inserted with the correct key, idles relative to the poking mop.

As a preferred embodiment, further defined is: a fourth spring is arranged between the two rotary keys, a second inserting part which protrudes outwards is further arranged on the rotary keys, an accommodating cavity which is provided with an opening facing the pulling piece and is used for accommodating the clutch piece is formed in one end of the lock liner, the accommodating cavity is communicated with the key hole, and a first inserting cavity for the second inserting part to insert is formed in the inward extension of the inner wall of the accommodating cavity, which is positioned on one side of the pulling piece; a first clamping groove is formed in the second inserting portion, and a first clamping piece which is inserted into the first clamping groove in a linkage mode is arranged on the periphery of the clutch piece.

As a preferred embodiment, further defined is: a fifth spring is arranged between the two clutch pieces, a first guide groove matched with the first clamping piece is arranged on one side, facing the pulling part, of the lock container, the first guide groove is communicated with the containing cavity, second guide grooves which are positioned on two sides of the containing cavity and communicated with the containing cavity are further arranged on the lock container, and first inserting keys matched with the second guide grooves are arranged on the periphery of the clutch pieces.

The utility model provides a key for having lock core of horizontal bars structure, the key includes the handle and fixed the setting key body on the handle, be provided with on the terminal surface of key body with the marble tooth of marble component looks adaptation, still be provided with on the terminal surface of key body the tooth mouth towards the outside and with the side tooth of side pearl looks adaptation, the both sides of key body still are provided with a plurality of and insert behind the lock courage with the accommodation hole is aimed at in the second through-hole.

The utility model has the advantages that:

1. the utility model is provided with a transverse grid structure, a spring component, a second locking spring and a double-rotation device, thereby effectively preventing the lock core from being pulled out and greatly improving the anti-theft performance of the lock core;

2. the lock core is provided with the transverse grid structure, the structure is simple, the assembly is easy, the plurality of accommodating grooves are aligned by inserting the correct key to touch the side beads, the transverse grid can enter the accommodating grooves to enable the lock core to rotate and unlock relative to the lock shell, the lock core is effectively prevented from being pulled out, and the accuracy and the stability are high during unlocking;

3. the utility model is provided with the second locking marble, when a correct key is inserted, the containing hole is aligned with the second through hole, the second locking marble can enter the installation cavity to lead the lock liner to rotate and unlock relative to the lock shell, thereby further preventing the lock liner from being pulled out and improving the anti-theft performance;

4. the lock core is also provided with a double-rotating device, the lock core inserted into one side of the correct key can be linked with the pull-out puller through the double-rotating device, and the lock core not inserted into one side of the key can idle relative to the pull-out puller.

[ description of the drawings ]

Fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is an exploded schematic view of the present invention;

fig. 3 is a transverse cross-sectional view of the present invention;

fig. 4 is a longitudinal sectional view of the present invention;

FIG. 5 is a schematic structural view of a double rotation device;

FIG. 6 is an exploded view of the dual rotary device;

FIG. 7 is a schematic view of the key construction;

FIG. 8 is a schematic structural view of a cross bar;

FIG. 9 is a schematic view of the structure of a lateral bead;

FIG. 10 is a schematic diagram of a structure of a pull-drag;

FIG. 11 is a schematic view of the lock core;

fig. 12 is a partial cross-sectional view of the cylinder.

[ detailed description ] embodiments

The invention is described in further detail below with reference to the following figures and embodiments:

as shown in fig. 1 to 4, a lock core with a cross bar structure comprises a lock shell 1, a pull-out 2 movably arranged in an open slot in the middle of the lock shell 1, a lock cylinder 3 arranged in the lock shell 1 at two sides of the pull-out 2, and a cylinder assembly 4 arranged between the lock shell 1 and the lock cylinder 3, wherein a cross bar slot 31 with an outward opening is formed in the lock cylinder 3, a cross bar 5 is arranged in the cross bar slot 31, a plurality of first locking cylinders 51 protruding outwards are arranged on the cross bar 5, an insertion hole 11 matched with the first locking cylinders 51 is formed in the lock shell 1, a plurality of side beads 6 are arranged in the lock cylinder 3 in a sliding manner, an opening 61 is formed on each side bead 6, and a return spring 32 is further arranged in the lock cylinder 3; when a correct key is inserted, a plurality of openings 61 are formed with an accommodating groove 611 for accommodating the transverse bar 5 on a straight line, when the lock cylinder 3 rotates, the inner wall of the lock shell 1 is contacted with the first locking pin 51, so that the transverse bar 5 enters the accommodating groove 611, the lock cylinder 3 rotates relative to the lock shell 1, and unlocking is realized; simple structure, the assembly is easy, inserts just can touch what the side pearl 6 makes a plurality of opening 61 align to be formed with holding tank 611 in order, and horizontal bars 5 can get into 611 in the holding tank and make lock courage 3 rotate for lock shell 1 and unblank, when the theftproof state, do not insert the key promptly or insert wrong key, effectively prevent that the lock courage from being extracted, the theftproof performance is good to accuracy and stability are high when unblanking.

As shown in fig. 2 to 4 and 8, in this embodiment, two sides of the cross bar 5 are provided with protruding portions 52, two sides of the cross bar groove 31 are provided with spring holes 311, a first spring 33 is disposed in the spring hole 311, one end of the first spring 33 abuts against the bottom of the spring hole 311 after assembly, and the other end of the first spring 33 abuts against the protruding portions 52; in the anti-theft state, the first locking pin 51 is inserted into the insertion hole 11 due to the elastic force of the two first springs 33, and the return spring 32 drives the side ball 6 to return so that the plurality of openings 61 are not in a straight line and no accommodating groove 611 for accommodating the cross bar 5 is formed, so that the first locking pin 51 cannot exit from the insertion hole 11, the lock cylinder 3 cannot rotate relative to the lock shell 1 and cannot move in the direction of inserting and extracting a key, the lock cylinder 3 is effectively prevented from being extracted and unlocked, and the anti-theft performance of the lock cylinder is greatly improved.

As shown in fig. 4 and fig. 11 to 12, in this embodiment, a key hole 34 is formed in the lock core 3, a plurality of side bead holes 35 are further formed in the lock core 3 and located at the lower end of the key hole 34, the side beads 6 are slidably disposed in the side bead holes 35, the side bead holes 35 are communicated with the key hole 34, and a guide post 62 which is assembled and then extends into the key hole 34 is disposed at one end of the side bead 6, which is away from the opening 61; the reset spring 32 is arranged in the side ball hole 35, after assembly, one end of the reset spring 32 is abutted to the bottom of the side ball hole 35, the other end of the reset spring 32 is abutted to the end face of the side ball 6 positioned on one side of the guide post 62, the structure is simple, the reset is easy, and the unlocking accuracy and stability are high.

As shown in fig. 4 and fig. 10 to 12, in this embodiment, a plurality of mounting cavities 36 are disposed on a circumferential surface of the lock core 3 on a side away from the opening of the key hole 34, a plurality of first through holes 12 aligned with the mounting cavities 36 are disposed on an outer circumferential surface of the lock case 1, a second through hole 361 communicated with the key hole 34 is disposed at a bottom of the mounting cavity 36, a second locking pin 7 is disposed in the mounting cavity 36, a first insertion portion 71 inserted into the second through hole 361 after assembly is disposed on the second locking pin 7, a third spring 37 sleeved on an outer circumference of the first insertion portion 71 is further disposed in the mounting cavity 36, one end of the third spring 37 abuts against the second locking pin 7, and the other end of the third spring 37 abuts against a bottom of the mounting cavity 36; in the anti-theft state, the second locking pin 7 is inserted into the first through hole 12, and the second locking pin 7 is arranged, so that the lock core 3 is further prevented from being pulled out and rotating to unlock in the anti-theft state, and the anti-theft performance is improved.

As shown in fig. 3, fig. 5 to fig. 6 and fig. 10, in this embodiment, a double rotation device 8 is further disposed in the lock housing 1, the dial puller 2 is sleeved on the double rotation device 8, the dial puller 2 is provided with a third through hole 21 with two open sides, a rib 22 is disposed on an inner wall of the third through hole 21, two first openings 23 which are oppositely disposed are disposed on the rib 22, and the lock core 3 can be linked with the dial puller 2 or idle relative to the dial puller 2 through the double rotation device 8; the double rotating device 8 comprises a clutch part 81 and a rotating key 82 which are symmetrically arranged, and a first boss 821 inserted into the first opening 23 after being assembled is arranged on the rotating key 82; the two clutch pieces 81 are fixedly connected together through a connecting piece 83; when the lock core 3 on one side is inserted with the correct key, the lock core 3 is linked with the pull-out handle 2 through the double rotating devices 8, and the lock core 3 on the other side which is not inserted with the correct key idles relative to the pull-out handle 2; furthermore, a second clamping groove is formed in the periphery of the lock core 3, which is located on one side of the pulling device 2, and a first clamping ring is clamped on the second clamping groove; design benefit, the mechanism is simple, small and exquisite, prevents effectively that the key from popping out when unblanking, further improves the theftproof performance of lock core.

As shown in fig. 3 and fig. 5 to fig. 6, in this embodiment, a fourth spring 84 is disposed between the two rotation keys 82, a second insertion portion 822 protruding outward is further disposed on the rotation key 82, one end of the lock cylinder 3 has an accommodating cavity 38 opening toward the dial 2 and used for accommodating the clutch 81, the accommodating cavity 38 is communicated with the key hole 34, and a first insertion cavity 381 for inserting the second insertion portion 822 is formed by extending inward an inner wall of the accommodating cavity 38 located at one side of the dial 2; a first clamping groove 823 is formed in the second inserting portion 822, and a first clamping piece 811 which is inserted into the first clamping groove 823 in linkage is arranged on the periphery of the clutch piece 81; furthermore, the rotation key 82 is further provided with a first installation cavity 824 having an opening shape on both left and right sides, one side of the first installation cavity 824, which is far away from the inner wall of the first clamping groove 823, extends inwards to form a first step 825, and after assembly, both ends of the fourth spring 84 respectively abut against the first steps 825 of the two rotation keys 82, so as to keep the two second insertion portions 822 inserted into the first insertion cavities 381 of the lock cores 3 on both sides.

As shown in fig. 3 and fig. 5 to fig. 6, in this embodiment, a fifth spring 85 is disposed between the two clutch members 81, a first guide groove 39 matched with the first engaging member 811 is disposed on one side of the lock core 3 facing the dial 2, the first guide groove 39 is communicated with the accommodating cavity 38, second guide grooves 391 located on both sides of the accommodating cavity 38 and communicated with the accommodating cavity 38 are further disposed on the lock core 3, and a first inserting key 812 matched with the second guide groove 391 is disposed on the outer periphery of the clutch member 81; more specifically, the clutch member 81 is provided with a first connecting portion 814 protruding outward, the clutch member 81 is further provided with a third through hole 813 having an open left side and a right side, two ends of the fifth spring 85 respectively abut against end surfaces of the two clutch members 81 at one end of the first connecting portion 814 during assembly, the connecting member 83 passes through the third through holes 813 of the two clutch members 81 and then fixedly connects the two clutch members 81 together, and the first connecting portion 814 and the fifth spring 85 are located in the first mounting cavity 824 after assembly.

When the correct key is inserted, the correct key pushes the clutch 81 on the side where the correct key is inserted to move in the direction of key insertion, and the first engaging member 811 is inserted into the first engaging groove 823 so that the clutch 81 on the side where the correct key is inserted is linked with the rotary key 82; meanwhile, the clutch member 81 on the side where the correct key is not inserted is also moved in the key insertion direction by the fifth spring 85 and the connecting member 83, so that the clutch member 81 on the side where the correct key is not inserted is not linked with the rotary key 82, and the cylinder 3 on the side where the correct key is inserted is linked with the tumbler 2 through the double rotating device 8, while the cylinder 3 on the other side where the correct key is not inserted is idle-rotated relative to the tumbler 2.

As shown in fig. 7, the key for a lock cylinder with a cross-bar structure, the key 9 includes a handle 91 and a key body 92 fixedly disposed on the handle 91, a pin tooth 93 adapted to the pin assembly 4 is disposed on an end surface of the key body 92, a side tooth 94 adapted to the side ball 6 and facing outward is further disposed on an end surface of the key body 92, and a plurality of receiving holes 95 aligned with the second through holes 361 after being inserted into the cylinder 3 are further disposed on two sides of the key body 92.

Further, as shown in fig. 2 to 3, when the correct key, i.e. the key 9 is inserted, the guide column 62 contacts the lateral teeth 51, so that the lateral teeth 51 touch the lateral beads 6 and align the plurality of openings 61 to form a receiving groove 611 for receiving the cross bar 5, while the receiving hole 95 is aligned with the second through hole 351 and the pin teeth 93 are engaged with the pin unit 4 and the clutch member 81 and the rotation key 82 inserted into the side of the key 9, after the quadruple locking is simultaneously engaged, when the lock core 3 rotates, the inner wall of the lock shell 1 contacts with the first locking pin 51 to make the cross bar 5 enter the receiving groove 611, the first insertion portion 71 can be inserted into the receiving hole 95 to make the second locking pin 7 enter the receiving cavity, therefore, the lock core 3 inserted into one side of the key 9 rotates relative to the lock shell 1 and drives the pulling handle 2 linked with the lock shell to unlock.

Claims (10)

1. The utility model provides a lock core with horizontal bars structure, includes lock shell (1), the activity sets up group in lock shell (1) middle part open slot drag (2), install dial lock courage (3) in lock shell (1) that drags (2) both sides and setting up and be in lock shell (1) and lock courage (3) between bullet subassembly (4), its characterized in that: a transverse grid groove (31) with an outward opening is formed in the lock liner (3), a transverse grid (5) is arranged in the transverse grid groove (31), a plurality of first locking marbles (51) protruding outwards are arranged on the transverse grid (5), insertion holes (11) matched with the first locking marbles (51) are formed in the lock shell (1), a plurality of side beads (6) are arranged in the lock liner (3) in a sliding mode, an opening (61) is formed in each side bead (6), and a reset spring (32) is further arranged in the lock liner (3); when a correct key is inserted, an accommodating groove (611) for accommodating the transverse grid (5) is formed in a straight line on the plurality of openings (61), when the lock core (3) rotates, the inner wall of the lock shell (1) is in contact with the first locking pin (51) to enable the transverse grid (5) to enter the accommodating groove (611), so that the lock core (3) rotates relative to the lock shell (1) and unlocking is achieved, and when the key is pulled out, the reset spring (32) drives the side ball (6) to reset to enable the plurality of openings (61) not to be in a straight line.

2. The lock cylinder with a cross bar structure according to claim 1, wherein: both sides of horizontal bars (5) all are provided with extension portion (52), the both sides of horizontal bars groove (31) all are provided with spring hole (311), be provided with first spring (33) in spring hole (311), the assembly back the one end of first spring (33) is supported the bottom in spring hole (311), the other end of first spring (33) is supported on extension portion (52).

3. The lock cylinder with a cross bar structure according to claim 1, wherein: the lock core is characterized in that a key hole (34) is formed in the lock core (3), a plurality of side bead holes (35) are formed in the lock core (3) and located at the lower end of the key hole (34), the side beads (6) are arranged in the side bead holes (35) in a sliding mode, and the side bead holes (35) are communicated with the key hole (34).

4. The lock cylinder with a cross bar structure according to claim 3, wherein: one end of the side bead (6) departing from the opening (61) is provided with a guide post (62) which is assembled and then extends into the key hole (34).

5. The lock cylinder with a cross bar structure according to claim 4, wherein: reset spring (32) set up in side pearl hole (35), the assembly back reset spring (32) one end support in the bottom of side pearl hole (35), reset spring (32) the other end support side pearl (6) are located on the terminal surface of guide post (62) one side.

6. The lock cylinder with a cross bar structure according to claim 5, wherein: a plurality of mounting cavities (36) are arranged on the circumferential surface of the lock core (3) far away from the opening side of the key hole (34), a plurality of first through holes (12) aligned with the mounting cavity (36) are arranged on the outer peripheral surface of the lock shell (1), a second through hole (361) communicated with the key hole (34) is arranged at the bottom of the mounting cavity (36), a second locking pin (7) is arranged in the mounting cavity (36), a first insertion part (71) which is inserted into the second through hole (361) after assembly is arranged on the second locking pin (7), a third spring (37) sleeved on the periphery of the first insertion part (71) is also arranged in the mounting cavity (36), one end of the third spring (37) is abutted against the second locking pin (7), the other end of the third spring (37) abuts against the bottom of the mounting cavity (36).

7. The lock cylinder with a barrier structure according to any one of claims 1 to 6, wherein: the lock is characterized in that a double-rotating device (8) is further arranged in the lock shell (1), the pulling mop (2) is sleeved on the double-rotating device (8), the pulling mop (2) is provided with a third through hole (21) with two open sides, a rib (22) is arranged on the inner wall of the third through hole (21), two first openings (23) which are oppositely arranged are formed in the rib (22), and the lock cylinder (3) can be linked with the pulling mop (2) or idled relative to the pulling mop (2) through the double-rotating device (8); the double-rotation device (8) comprises a clutch piece (81) and a rotating key (82) which are symmetrically arranged, and a first boss (821) inserted into the first opening (23) after being assembled is arranged on the rotating key (82); the two clutch pieces (81) are fixedly connected together through a connecting piece (83); when the lock cylinder (3) on one side is inserted with a correct key, the lock cylinder is linked with the pull-out handle (2) through the double rotating devices (8), and the lock cylinder (3) on the other side which is not inserted with the correct key idles relative to the pull-out handle (2).

8. The lock cylinder with a cross bar structure according to claim 7, wherein: a fourth spring (84) is arranged between the two rotary keys (82), a second inserting portion (822) protruding outwards is further arranged on each rotary key (82), an accommodating cavity (38) with an opening facing the pull rod (2) and used for accommodating the clutch piece (81) is formed in one end of the lock cylinder (3), the accommodating cavity (38) is communicated with the key hole (34), and a first inserting cavity (381) for the second inserting portion (822) to insert is formed in an inward extending mode of the inner wall, located on one side of the pull rod (2), of the accommodating cavity (38); first clamping groove (823) is formed in the second inserting portion (822), and a first clamping piece (811) inserted into the first clamping groove (823) in linkage is arranged on the periphery of the clutch piece (81).

9. The lock cylinder with a cross bar structure according to claim 8, wherein: a fifth spring (85) is arranged between the two clutch pieces (81), a first guide groove (39) matched with the first clamping piece (811) is formed in one side, facing the pulling and dragging part (2), of the lock liner (3), the first guide groove (39) is communicated with the accommodating cavity (38), second guide grooves (391) located on two sides of the accommodating cavity (38) and communicated with the accommodating cavity (38) are further formed in the lock liner (3), and a first inserting key (812) matched with the second guide groove (391) is arranged on the periphery of the clutch piece (81).

10. A key for a lock cylinder with a cross bar structure according to any one of claims 1 to 6, said key (9) comprising a handle (91) and a key body (92) fixedly provided on said handle (91), characterized in that: be provided with on the terminal surface of key body (92) with marble subassembly (4) looks adaptation marble tooth (93), still be provided with on the terminal surface of key body (92) the tooth mouth towards outside and with side tooth (94) of side pearl (6) looks adaptation, the both sides of key body (92) still are provided with a plurality of and insert behind lock courage (3) with the hole (95) is aimed at to second through-hole (361).

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