CN111140085A

CN111140085A - Anti-breaking self-locking lock cylinder

Info

Publication number: CN111140085A
Application number: CN202010059000.4A
Authority: CN
Inventors: 曾雄飞; 杨铭华; 潘绍纲
Original assignee: Zhongshan Jixin Core Lock Co ltd
Current assignee: Zhongshan Jixin Core Lock Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-05-12
Also published as: GB202007261D0; GB2591154B; GB2591154A

Abstract

The invention relates to a breaking-proof self-locking lock core, wherein an outer clutch part and an inner clutch part for realizing the linkage of a pulling device and an outer lock liner are arranged in a lock shell; a transverse pin hole and a first longitudinal hole are formed in the inner clutch piece, a second longitudinal hole is formed in the outer clutch piece, a pin piece is fixedly arranged on the outer lock liner, and the pin piece is provided with a plug pin part which can be inserted into the transverse pin hole, so that the outer clutch piece and the inner clutch piece are linked through a first limiting ball; when the lock shell is broken, the outer lock liner and the pin piece are taken out, the first limiting balls completely enter the first longitudinal hole, the outer clutch piece and the lock shell are locked by the locking assembly to enter a breaking-proof self-locking state, the inner clutch piece idles at the moment, the outer clutch piece cannot bear force, drilling and breaking can be effectively prevented, the lock shell is ingenious in design and high in safety, in addition, the pulling and outer lock liner and the pulling and inner lock liner are switched and linked through the rotary key assembly, the situation that after the first half part of the lock core is broken by a lawless person is guaranteed, the second half part can still normally work, and the safety is high.

Description

Anti-breaking self-locking lock cylinder

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of locks, in particular to a breaking-proof self-locking lock cylinder.

[ background of the invention ]

Most common bilateral lock cylinders (namely, a key can be inserted from the inside or the outside of the door to unlock) on the market at present, when a lawbreaker forcibly breaks off the lock cylinder by using a tool outside the door, a common lock shell is broken off at an open slot, a pulling lug or a rotating key connected with the pulling lug is exposed outside, and the lawbreaker can unlock by rotating the rotating key or the pulling lug through various tools, which is also one of the means that a thief often opens the door with violent force; under the condition, once the front half part of the lock cylinder is broken by a lawless person, a user cannot open the lock cylinder to open the door on the other side (namely in a room) of the lock cylinder by using a correct key, so that the user cannot open the door in the room to save self and needs to ask for help of a professional unlocking maker, and great troubles and great potential safety hazards are brought to the user and lives and properties.

Although a lock core structure capable of partially preventing the phenomenon also appears in the market, the lock has the defects of high production difficulty, more accessories, difficult installation and the like, and the invention is improved aiming at the defects.

[ summary of the invention ]

In order to solve the problems, the invention provides the breakage-proof self-locking lock cylinder which can effectively prevent drilling and is twist-off and high in safety.

In order to achieve the purpose, the invention provides the following technical scheme:

a breakage-proof self-locking lock core comprises a lock shell, a pulling lug arranged in an open slot in the middle of the lock shell, an outer lock liner and an inner lock liner which are respectively arranged in the lock shell positioned at two sides of the pulling lug, wherein an outer clutch member which is positioned between the pulling lug and the outer lock liner and is linked with the pulling lug through a rotating key assembly, and an inner clutch member which can be linked with the outer clutch member or idle relative to the outer clutch member are also arranged in the lock shell, and the outer lock liner is linked with the inner clutch member; the inner clutch piece is internally provided with transverse pin holes distributed along the key insertion direction and a first longitudinal hole vertically communicated with the transverse pin holes, the outer clutch piece is internally provided with a second longitudinal hole communicated with the first longitudinal hole, the first longitudinal hole and the second longitudinal hole are internally provided with a first limiting bead capable of enabling the inner clutch piece and the outer clutch piece to be linked, the outer lock liner is fixedly provided with a pin piece, and the pin piece is provided with a pin part capable of being inserted into the transverse pin holes and enabling one part of the first limiting bead to be kept in the first longitudinal hole and the other part of the first limiting bead to be kept in the second longitudinal hole; the outer clutch piece and the inner clutch piece are linked through a first limiting ball in a non-breaking and self-locking state; when the outer lock cylinder and the pin piece are taken out after the lock shell is broken off, the first limiting balls completely enter the first longitudinal hole, so that the inner clutch piece can idle relative to the outer clutch piece and enter a breaking-preventing self-locking state.

As a preferred embodiment, further defined is: and a locking assembly which can lock the outer clutch piece and the lock shell in a breaking-proof self-locking state is also arranged in the lock shell.

As a preferred embodiment, further defined is: a third longitudinal hole which is coaxial with the second longitudinal hole is formed in the lock shell, the locking assembly comprises a steel ball and a limiting flat ball which are sequentially arranged in the third longitudinal hole from bottom to top, the lower end of the steel ball abuts against the upper end face of the first limiting ball, and the lower end face of the limiting flat ball abuts against the upper end of the steel ball; when the inner clutch piece drives the outer clutch piece to rotate, the steel balls rotate in the third longitudinal holes and are in contact with the side end face of the outer clutch piece; when the clutch enters the anti-breaking self-locking state, the first limiting ball completely enters the first longitudinal hole, meanwhile, the steel ball enters the second longitudinal hole and abuts against the upper end face of the first limiting ball, and the lower end of the limiting flat ball enters the second longitudinal hole to lock the outer clutch piece and the lock shell; when the inner clutch piece idles relative to the outer clutch piece, the steel balls rotate in the second longitudinal holes and contact with the side end face of the inner clutch piece.

As a preferred embodiment, further defined is: an arc-shaped sliding groove located on the outer side of the first longitudinal hole is formed in the side end face of the inner clutch piece in a concave mode, and when the inner clutch piece enters the anti-breaking self-locking state, the lower end of the steel ball penetrates through the second longitudinal hole, enters the arc-shaped sliding groove and abuts against the upper end face of the first limiting ball.

As a preferred embodiment, further defined is: a fourth longitudinal hole which is positioned at the lower end of the inner clutch piece and has the same axis with the second longitudinal hole is also arranged in the outer clutch piece, a second limiting bead is arranged in the fourth longitudinal hole, and the upper end of the second limiting bead extends into the arc-shaped sliding groove and abuts against the side end face of the inner clutch piece.

As a preferred embodiment, further defined is: the lock shell is internally provided with at least one stopping cavity positioned outside the third longitudinal hole, and the locking assembly further comprises a stopping pin and a stopping spring which are arranged in the stopping cavity; the bottom of the stopping cavity is provided with a stopping hole communicated with the third longitudinal hole, and one end of the stopping pin protrudes outwards to form an insertion part which can penetrate through the stopping hole and be inserted into the third longitudinal hole under the action of a stopping spring; when the anti-breaking self-locking state is not entered, the front end of the insertion part penetrates through the upper stopping hole and abuts against the side end face of the limiting flat bead; when the anti-breaking self-locking state is entered, the limit flat bead falls down, and the insertion part penetrates through the upper stopping hole to be inserted into the third longitudinal hole and is positioned at the upper end of the limit flat bead.

As a preferred embodiment, further defined is: the lock shell is also provided with a sealing sheet which is covered on the outer side of the upper stopping cavity.

As a preferred embodiment, further defined is: the locking assembly further comprises a self-locking spring which is arranged in the third longitudinal hole and can push the limiting flat bead to move downwards.

As a preferred embodiment, further defined is: one end of the outer clutch piece is provided with a rotating cavity with an opening facing to the outer lock cylinder and used for containing the inner clutch piece, the other end of the outer clutch piece is connected with the rotating key assembly, and the inner clutch piece idles in the rotating cavity when the outer clutch piece enters a breaking-proof self-locking state; a first slot is formed in one side, facing the inner clutch piece, of the outer lock core, and a first inserting key matched with the first slot is arranged on one side, facing the outer lock core, of the inner clutch piece; one side of the outer lock container facing the inner clutch piece is further provided with a pin piece cavity used for containing the pin piece and a second slot located on two sides of the pin piece cavity and communicated with the pin piece cavity, and the pin piece is provided with a second inserting key inserted into the second slot.

As a preferred embodiment, further defined is: the outer side of the outer lock container is provided with a first meson bayonet located between the first slot and the second slot and communicated with the first slot and the second slot respectively, the second inserting key is provided with a second meson bayonet corresponding to the first meson bayonet, the first meson bayonet and the second meson bayonet form an arc meson groove, and an meson axially fixing the outer lock container and the pin piece is arranged in the meson groove.

As a preferred embodiment, further defined is: the rotary key assembly mainly comprises an outer rotary key and an inner rotary key hinged with the outer rotary key, one side of the outer clutch piece facing the poke and pull is provided with an outer rotary key cavity for containing the outer rotary key and a third slot which is positioned at two sides of the outer rotary key cavity and communicated with the outer rotary key cavity, and the outer rotary key is provided with a third inserting key matched with the third slot; the poking and pulling device is provided with a linkage hole matched with the rotating key assembly, when the outer clutch piece is linked with the poking and pulling device, one end of the outer rotating key is positioned in the outer clutch piece, and the other end of the outer rotating key is positioned in the linkage hole; the inner lock liner is linked with the pull-drag through an inner rotary key, the inner lock liner is provided with an inner rotary key cavity for containing the inner rotary key and fourth slots which are positioned at two sides of the inner rotary key cavity and communicated with the inner rotary key cavity, and the inner rotary key is provided with fourth inserting keys matched with the fourth slots; the rotary key assembly further comprises a rotary key spring, one end of the outer rotary key, facing the inner clutch piece, is provided with a spring cavity for containing the rotary key spring, one end of the rotary key spring abuts against the side end of the inner clutch piece, and the other end of the rotary key spring abuts against the cavity bottom of the spring cavity; when the inner lock liner is inserted into a key, the front end of the key pushes the outer rotating key and the inner rotating key to move towards the inner clutch piece to compress the rotating key spring, the outer rotating key exits from the linkage hole, and one end of the inner rotating key is inserted into the linkage hole to enable the inner lock liner to be linked with the pulling and pulling; when the key is pulled out of the inner lock container, the rotating key spring drives the outer rotating key and the inner rotating key to reset.

The beneficial effects of the invention are as follows:

1. the invention creates that an outer clutch part and an inner clutch part for realizing the linkage of a pulling device and an outer lock liner are arranged in a lock shell; a transverse pin hole and a first longitudinal hole are formed in the inner clutch piece, a second longitudinal hole is formed in the outer clutch piece, a pin piece is fixedly arranged on the outer lock liner, and the pin piece is provided with a plug pin part which can be inserted into the transverse pin hole, so that the outer clutch piece and the inner clutch piece are linked through a first limiting ball; when the lock shell is broken, the outer lock liner and the pin piece are taken out, the first limiting balls are completely arranged in the first longitudinal hole, so that the inner clutch piece can enter a breaking-proof self-locking state relative to the outer clutch piece in an idling mode, meanwhile, the outer clutch piece and the lock shell are locked by the locking assembly, the inner clutch piece can idle at the moment, the outer clutch piece cannot bear force, drilling and breaking of the outer clutch piece can be effectively prevented, the design is ingenious, lawless persons cannot drive to pull and drag the outer clutch piece to rotate through tools when opening the door violently, the door is effectively prevented from being opened violently by lawless persons, and the safety is high.

2. The poking mop is in switching linkage with the outer lock liner and the inner lock liner through the rotary key assembly, so that the rear half part of the lock cylinder can still work normally after the front half part of the lock cylinder is broken by a lawbreaker, and the safety is high.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of the invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view of the inventive transverse structure;

FIG. 4 is a cross-sectional view of the transverse structure in the anti-break self-locking state;

FIG. 5 is a longitudinal sectional view of the structure in a self-locking state;

FIG. 6 is an exploded view of the present invention;

FIG. 7 is a schematic diagram of a structure of a pull-drag;

FIG. 8 is a schematic structural view of the outer lock cylinder;

FIG. 9 is a schematic structural view of the inner lock cylinder;

FIG. 10 is a schematic structural view of the rotary key assembly;

FIG. 11 is an exploded schematic view of the rotary key assembly;

FIG. 12 is one of the structural schematics of the outer clutch member;

FIG. 13 is a second schematic structural view of the outer clutch member;

FIG. 14 is a schematic structural view of the inner clutch member;

fig. 15 is a schematic view of the pin member.

[ detailed description ] embodiments

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

as shown in the attached drawings 1 to 6, the anti-break self-locking lock cylinder comprises a lock shell 1, a pulling lug 2 arranged in an open slot at the middle part of the lock shell 1, an outer lock liner 3 and an inner lock liner 4 which are respectively arranged in the lock shell 1 and positioned at two sides of the pulling lug 2, wherein an outer clutch member 6 which is positioned between the pulling lug 2 and the outer lock liner 3 and is linked with the pulling lug 2 through a rotating key assembly 5, and an inner clutch member 7 which can be linked with the outer clutch member 6 or idle relative to the outer clutch member 6 are also arranged in the lock shell 1, and the outer lock liner 3 is linked with the inner clutch member 7; transverse pin holes 71 distributed along the key insertion direction and a first longitudinal hole 72 vertically penetrating through the transverse pin holes 71 are formed in the inner clutch member 7, a second longitudinal hole 61 penetrating through the first longitudinal hole 72 is formed in the outer clutch member 6, a first limiting bead 8 capable of enabling the inner clutch member 7 and the outer clutch member 6 to be linked is arranged in the first longitudinal hole 72 and the second longitudinal hole 61, a pin member 9 is fixedly arranged on the outer lock container 3, and the pin member 9 is provided with a bolt part 91 capable of being inserted into the transverse pin holes 71, enabling one part of the first limiting bead 8 to be kept in the first longitudinal hole 72 and the other part of the first limiting bead 8 to be kept in the second longitudinal hole 61; the outer clutch 6 and the inner clutch 7 are linked through a first limiting ball 8 in a non-breaking self-locking state; as shown in fig. 4 and 5, when the outer lock core 3 and the pin member 9 are taken out after the lock case 1 is broken, the first limiting bead 8 completely enters the first longitudinal hole 72, so that the inner clutch member 7 can idle relative to the outer clutch member 6 to enter the anti-breaking self-locking state. In addition, still be provided with in the lock shell 1 and can make when preventing disconnected auto-lock state the locking subassembly 10 of outer clutch 6 and lock shell 1 kayser, the inner clutch spare can idle running this moment, and outer clutch spare can't atress, can effectively prevent boring and prevent being twisted off, design benefit for lawless persons can't drive through the instrument when violently opening the door and dial and drag the rotation, and the security is high.

More specifically, a third longitudinal hole 11 coaxial with the second longitudinal hole 61 is formed in the lock case 1, the locking assembly 10 includes a steel ball 101 and a limiting flat ball 102 which are sequentially arranged in the third longitudinal hole 11 from bottom to top, a lower end of the steel ball 101 abuts against an upper end surface of the first limiting ball 8, and a lower end surface of the limiting flat ball 102 abuts against an upper end of the steel ball 101; when the inner clutch part 7 drives the outer clutch part 6 to rotate, the steel balls 101 rotate in the third longitudinal hole 11 and are in contact with the side end face of the outer clutch part 6; as shown in fig. 4 and 5, when the clutch member enters the anti-breaking self-locking state, the first limiting bead 8 completely enters the first longitudinal hole 72, the steel ball 101 enters the second longitudinal hole 61 and abuts against the upper end surface of the first limiting bead 8, and the lower end of the limiting flat bead 102 enters the second longitudinal hole 61, so that the outer clutch member 6 is locked with the lock housing 1; when the inner clutch 7 idles against the outer clutch 6, the steel balls 101 rotate in the second longitudinal holes 61 and come into contact with the side end surface of the inner clutch 7.

In this embodiment, in order to further improve the smoothness of the movement between the members, the mechanical jam is prevented. An arc-shaped sliding groove 73 positioned outside the first longitudinal hole 72 is formed in the side end surface of the inner clutch member 7 in a concave mode, and when the inner clutch member enters the anti-breaking self-locking state, the lower end of the steel ball 101 penetrates through the second longitudinal hole 61 to enter the arc-shaped sliding groove 73 and abut against the upper end surface of the first limiting ball 8. The steel balls 101 have larger rotating space in the arc-shaped sliding groove 73, so that the outer clutch part 6 and the inner clutch part 7 can be effectively prevented from being locked by the steel balls, and the smoothness of relative rotation between the outer clutch part 6 and the inner clutch part 7 is ensured.

In this embodiment, a fourth longitudinal hole 65 is further disposed in the outer clutch 6, the fourth longitudinal hole 65 is located at the lower end of the inner clutch 7 and is coaxial with the second longitudinal hole 61, a second limit bead 66 is disposed in the fourth longitudinal hole 65, and the upper end of the second limit bead 66 extends into the arc chute 73 and abuts against the side end face of the inner clutch 7; the second limiting beads 66 play a limiting role in the axial direction of the inner clutch piece 7, the coaxiality of the first longitudinal hole 72, the second longitudinal hole 61 and the third longitudinal hole 11 is ensured, the smoothness of actions among all the parts is improved, and the mechanical clamping is prevented.

In this embodiment, in order to prevent a lawless person from prying the first limiting bead 8, the steel ball 101 and the limiting flat bead 102 from moving upward, at least one upper stopping chamber 12 located outside the third longitudinal hole 11 is provided in the lock housing 1, as shown in fig. 2, two upper stopping chambers 12 are provided, and are symmetrically distributed on two sides of the third longitudinal hole 11; the locking assembly 10 further comprises a stop pin 103 and a stop spring 104 which are arranged in the stop cavity 12, and the two stop pins 103 and the two stop springs 104 are also arranged; the bottom of the stop cavity 12 is provided with a stop hole 13 communicated with the third longitudinal hole 11, and one end of the stop pin 103 is convexly provided with an insertion part 1031 which can pass through the stop hole 13 and be inserted into the third longitudinal hole 11 under the action of a stop spring 104; when the anti-breaking self-locking state is not entered, the front end of the insertion part 1031 passes through the upper stop hole 13 and abuts against the side end face of the limit flat bead 102; when the anti-breaking self-locking state is entered, after the limiting flat bead 102 falls down, the insertion part 1031 penetrates through the upper stopping hole 13 to be inserted into the third longitudinal hole 11 and is positioned at the upper end of the limiting flat bead 102, so that the limiting flat bead 102 can be prevented from moving upwards, a lawbreaker cannot pry the limiting flat bead, and the safety is high. In order to ensure that the first limiting ball 8, the steel ball 101 and the limiting flat ball 102 can smoothly move downwards when entering the anti-breaking self-locking state, the locking assembly 10 further comprises a self-locking spring 106 which is arranged in the third longitudinal hole 11 and can push the limiting flat ball 102 to move downwards, and in the non-anti-breaking self-locking state, the bolt part 91 is inserted into the transverse pin hole 71, so that one part of the first limiting ball 8 is kept in the first longitudinal hole 72 and the other part is kept in the second longitudinal hole 61, and meanwhile, the steel ball 101 and the limiting flat ball 102 are supported and the self-locking spring 106 is compressed.

In this embodiment, the lock case 1 is further provided with a sealing piece 105 covering the outer side of the stop cavity 12. More specifically, the lock case 1 is provided with a cover piece groove 107, the cover piece 105 is inserted into the cover piece groove 107 from the side end, and the cover piece groove 107 has a necking structure with a narrow outside and a wide inside in order to prevent the cover piece 105 from falling off.

In this embodiment, as shown in fig. 12 to 14, one end of the outer clutch 6 has a rotating cavity 62 opening toward the outer lock cylinder 3 and used for accommodating the inner clutch 7, and the other end is connected with the rotating key assembly 5, when the anti-breaking self-locking state is entered, the inner clutch 7 idles in the rotating cavity 62; as shown in fig. 8, a first slot 31 is provided on a side of the outer lock core 3 facing the inner clutch 7, and a first key 74 engaged with the first slot 31 is provided on a side of the inner clutch 7 facing the outer lock core 3; one side of outer lock courage 3 towards interior clutch 7 still is provided with and is used for holding round pin spare chamber 33 of round pin spare 9 and be located round pin spare chamber 33 both sides and with the second slot 32 that round pin spare chamber 33 link up, as shown in figure 15, round pin spare 9 has and inserts second latch 92 in the second slot 32, realizes the linkage of round pin spare 9 and outer lock courage 3 through the cooperation of second slot 32 and second latch 92, simple structure, design benefit.

In this embodiment, a first meson bayonet 34 located between the first slot 31 and the second slot 32 and respectively communicated with the first slot 31 and the second slot 32 is disposed on the outer side of the outer lock core 3, a second meson bayonet 93 corresponding to the first meson bayonet 34 is disposed on the second key 92, the first meson bayonet 34 and the second meson bayonet 93 form an arc meson groove, and an meson axially fixing the outer lock core 3 and the pin 9 is disposed in the meson groove. The outer lock cylinder 3 and the pin piece 9 are axially fixed through the meson, when a lawless person breaks the front half part of the lock shell 1, the pin piece 9 can be taken out at the same time, and therefore the outer lock cylinder 3 can enter a breaking-proof self-locking state.

As shown in fig. 10 and 11, the rotating key assembly 5 mainly comprises an outer rotating key 51 and an inner rotating key 52 hinged to the outer rotating key 51, one side of the outer clutch member 6 facing the dial 2 is provided with an outer rotating key cavity 64 for accommodating the outer rotating key 51 and a third slot 63 located at two sides of the outer rotating key cavity 64 and penetrating through the outer rotating key cavity 64, and the outer rotating key 51 is provided with a third inserting key 53 matching with the third slot 63; as shown in fig. 7, the dial puller 2 is provided with a linkage hole 21 matched with the rotating key assembly 5, when the outer clutch member 6 is linked with the dial puller 2, one end of the outer rotating key 51 is positioned in the outer clutch member 6, and the other end is positioned in the linkage hole 21; the inner lock core 4 is linked with the dial 2 through an inner rotary key 52, as shown in fig. 9, the inner lock core 4 is provided with an inner rotary key cavity 42 for accommodating the inner rotary key 52 and fourth slots 41 which are located at two sides of the inner rotary key cavity 42 and are communicated with the inner rotary key cavity 42, and the inner rotary key 52 is provided with fourth inserting keys 54 matched with the fourth slots 41; the turnkey assembly 5 further comprises a turnkey spring 55, one end of the outer turnkey 51, which faces the inner clutch piece 7, is provided with a spring cavity 56 for accommodating the turnkey spring 55, one end of the turnkey spring 55 abuts against the side end of the inner clutch piece 7, and the other end abuts against the cavity bottom of the spring cavity 56; when the inner lock core 4 is inserted into the key, the front end of the key pushes the outer rotating key 51 and the inner rotating key 52 to move towards the inner clutch part 7 to compress the rotating key spring 55, meanwhile, the outer rotating key 51 exits from the linkage hole 21, and one end of the inner rotating key 52 is inserted into the linkage hole 21 to enable the inner lock core 4 to be linked with the pull handle 2; when the key is pulled out of the inner lock core 4, the rotating key spring 55 drives the outer rotating key 51 and the inner rotating key 52 to reset. The toggle mop 2 is in switching linkage with the outer lock container 3 and the toggle mop 2 is in switching linkage with the inner lock container 4 through the rotary key assembly 5, so that the rear half part of the lock cylinder can still work normally after the front half part of the lock cylinder is broken by a lawless person, and the safety is high.

Claims

1. A breakage-proof self-locking lock core comprises a lock shell (1), a pulling mop (2) arranged in an open slot in the middle of the lock shell (1), an outer lock liner (3) and an inner lock liner (4) which are respectively arranged in the lock shell (1) and positioned at two sides of the pulling mop (2), and the breakage-proof self-locking lock core is characterized in that an outer clutch member (6) which is positioned between the pulling mop (2) and the outer lock liner (3) and is linked with the pulling mop (2) through a rotating key assembly (5) and an inner clutch member (7) which can be linked with the outer clutch member (6) or idle relative to the outer clutch member are also arranged in the lock shell (1), and the outer lock liner (3) is linked with the inner clutch member (7); the inner clutch piece (7) is internally provided with transverse pin holes (71) distributed along the key insertion direction and a first longitudinal hole (72) vertically communicated with the transverse pin holes (71), the outer clutch piece (6) is internally provided with a second longitudinal hole (61) communicated with the first longitudinal hole (72), the first longitudinal hole (72) and the second longitudinal hole (61) are internally provided with a first limiting bead (8) capable of enabling the inner clutch piece (7) and the outer clutch piece (6) to be linked, the outer lock liner (3) is fixedly provided with a pin piece (9), and the pin piece (9) is provided with a pin portion (91) capable of being inserted into the transverse pin holes (71) and enabling one part of the first limiting bead (8) to be kept in the first longitudinal hole (72) and the other part of the first limiting bead to be kept in the second longitudinal hole (61); when the clutch is in a non-breaking-prevention self-locking state, the outer clutch (6) and the inner clutch (7) are linked through a first limiting bead (8); when the outer lock cylinder (3) and the pin member (9) are taken out after the lock shell (1) is broken, the first limiting balls (8) completely enter the first longitudinal hole (72), so that the inner clutch member (7) can idle relative to the outer clutch member (6) to enter an anti-breaking self-locking state.

2. The anti-break self-locking lock cylinder according to claim 1, characterized in that a locking assembly (10) is further arranged in the lock shell (1) for locking the outer clutch member (6) with the lock shell (1) in the anti-break self-locking state.

3. The anti-break self-locking lock cylinder according to claim 2, characterized in that a third longitudinal hole (11) coaxial with the second longitudinal hole (61) is arranged on the lock housing (1), the locking assembly (10) comprises a steel ball (101) and a limiting flat ball (102) which are sequentially arranged in the third longitudinal hole (11) from bottom to top, the lower end of the steel ball (101) abuts against the upper end face of the first limiting ball (8), and the lower end face of the limiting flat ball (102) abuts against the upper end of the steel ball (101); when the inner clutch piece (7) drives the outer clutch piece (6) to rotate, the steel balls (101) rotate in the third longitudinal hole (11) and are in contact with the side end face of the outer clutch piece (6); when the clutch lock enters an anti-breaking self-locking state, the first limiting bead (8) completely enters the first longitudinal hole (72), meanwhile, the steel ball (101) enters the second longitudinal hole (61) and abuts against the upper end face of the first limiting bead (8), and the lower end of the limiting flat bead (102) enters the second longitudinal hole (61) so that the outer clutch piece (6) is locked with the lock shell (1); when the inner clutch piece (7) idles relative to the outer clutch piece (6), the steel balls (101) rotate in the second longitudinal hole (61) and contact with the side end face of the inner clutch piece (7).

4. The anti-break self-locking lock cylinder according to claim 3, characterized in that an arc-shaped sliding groove (73) positioned outside the first longitudinal hole (72) is concavely formed in the side end surface of the inner clutch member (7), and when the anti-break self-locking state is entered, the lower end of the steel ball (101) passes through the second longitudinal hole (61) to enter the arc-shaped sliding groove (73) and abuts against the upper end surface of the first limiting ball (8).

5. The breakage-proof self-locking lock cylinder according to claim 4, characterized in that a fourth longitudinal hole (65) is further arranged in the outer clutch member (6), the fourth longitudinal hole (65) is located at the lower end of the inner clutch member (7) and is coaxial with the second longitudinal hole (61), a second limiting bead (66) is arranged in the fourth longitudinal hole (65), and the upper end of the second limiting bead (66) extends into the arc-shaped sliding groove (73) and abuts against the side end face of the inner clutch member (7).

6. The anti-break self-locking lock cylinder according to claim 3, characterized in that at least one stopping cavity (12) is provided in the lock housing (1) outside the third longitudinal bore (11), and the locking assembly (10) further comprises a stopping pin (103) and a stopping spring (104) provided in the stopping cavity (12); the bottom of the stopping cavity (12) is provided with a stopping hole (13) communicated with the third longitudinal hole (11), and one end of the stopping pin (103) is convexly provided with an inserting part (1031) which can pass through the stopping hole (13) and be inserted into the third longitudinal hole (11) under the action of a stopping spring (104); when the anti-breaking self-locking state is not entered, the front end of the insertion part (1031) passes through the stop hole (13) and abuts against the side end surface of the limit flat bead (102); when the anti-breaking self-locking state is entered, after the limiting flat bead (102) falls down, the inserting part (1031) penetrates through the upper stopping hole (13) to be inserted into the third longitudinal hole (11) and is positioned at the upper end of the limiting flat bead (102).

7. The anti-break self-locking lock core according to claim 6, characterized in that the lock shell (1) is further provided with a sealing piece (105) which covers the outer side of the anti-upper cavity (12).

8. The anti-break self-locking cylinder according to claim 6, characterized in that the locking assembly (10) further comprises a self-locking spring (106) disposed in the third longitudinal hole (11) and capable of pushing the position-limiting flat bead (102) to move downwards.

9. The anti-break self-locking lock cylinder according to any one of claims 1 to 8, characterized in that one end of the outer clutch (6) has a rotating cavity (62) with an opening facing the outer lock cylinder (3) and used for accommodating the inner clutch (7), and the other end is connected with the rotating key assembly (5), when the anti-break self-locking state is entered, the inner clutch (7) idles in the rotating cavity (62); a first slot (31) is formed in one side, facing the inner clutch piece (7), of the outer lock core (3), and a first inserting key (74) matched with the first slot (31) is arranged on one side, facing the outer lock core (3), of the inner clutch piece (7); one side of outer lock courage (3) orientation internal clutch spare (7) still is provided with and is used for holding round pin spare chamber (33) of round pin spare (9) and be located round pin spare chamber (33) both sides and with second slot (32) that round pin spare chamber (33) link up, round pin spare (9) have insert second inserted key (92) in second slot (32).

10. The anti-break self-locking lock cylinder according to claim 9, wherein a first meson bayonet (34) is disposed on an outer side of the outer lock cylinder (3) and is located between the first slot (31) and the second slot (32) and is respectively communicated with the first slot (31) and the second slot (32), a second meson bayonet (93) corresponding to the first meson bayonet (34) is disposed on the second plug-in key (92), the first meson bayonet (34) and the second meson bayonet (93) form an arc meson groove, and an meson axially fixing the outer lock cylinder (3) and the pin (9) is disposed in the meson groove.

11. The anti-break self-locking lock cylinder according to claim 9, characterized in that the turn key assembly (5) mainly comprises an outer turn key (51) and an inner turn key (52) hinged to the outer turn key (51), one side of the outer clutch piece (6) facing the dial puller (2) is provided with an outer turn key cavity (64) for accommodating the outer turn key (51) and a third slot (63) located on both sides of the outer turn key cavity (64) and penetrating through the outer turn key cavity (64), and the outer turn key (51) is provided with a third inserting key (53) matching with the third slot (63); the pulling mop (2) is provided with a linkage hole (21) matched with the rotating key assembly (5), when the outer clutch piece (6) is linked with the pulling mop (2), one end of the outer rotating key (51) is positioned in the outer clutch piece (6), and the other end of the outer rotating key is positioned in the linkage hole (21); the inner lock core (4) is linked with the pulling mop (2) through an inner rotary key (52), the inner lock core (4) is provided with an inner rotary key cavity (42) for containing the inner rotary key (52) and fourth slots (41) which are positioned at two sides of the inner rotary key cavity (42) and are communicated with the inner rotary key cavity (42), and the inner rotary key (52) is provided with fourth inserting keys (54) matched with the fourth slots (41); the turnkey assembly (5) further comprises a turnkey spring (55), one end, facing the inner clutch piece (7), of the outer turnkey (51) is provided with a spring cavity (56) used for containing the turnkey spring (55), one end of the turnkey spring (55) abuts against the side end of the inner clutch piece (7), and the other end of the turnkey spring (55) abuts against the cavity bottom of the spring cavity (56); when the inner lock liner (4) is inserted into a key, the front end of the key pushes the outer rotating key (51) and the inner rotating key (52) to move towards the inner clutch part (7) to compress the rotating key spring (55), meanwhile, the outer rotating key (51) exits from the linkage hole (21), and one end of the inner rotating key (52) is inserted into the linkage hole (21) to enable the inner lock liner (4) to be linked with the pulling mop (2); when the key is pulled out of the inner lock cylinder (4), the rotating key spring (55) drives the outer rotating key (51) and the inner rotating key (52) to reset.