Anti-riot lock cylinder and anti-riot lock

Abstract

The invention discloses an anti-riot lock cylinder, belongs to the technical field of locks, solves the problem that an outer transmission block or an unlocking dial wheel is exposed due to loss of an outer lock cylinder body under violence, and adopts the technical scheme that the anti-riot lock cylinder mainly comprises the outer lock cylinder body, an inner lock cylinder body and a connecting rod, the unlocking dial wheel is arranged on the connecting rod, and an outer transmission piece is arranged in the connecting rod; the outer transmission part has the tendency of moving outwards to be separated from the unlocking shifting wheel, a connecting part is arranged between the outer lock cylinder body and the outer transmission part, the connecting part drives the outer transmission part to move outwards when the outer lock cylinder body is violently damaged to be separated from the connecting rod, a limiting hole is formed in the connecting rod, and the outer transmission part is provided with a limiting part which has the tendency of protruding out of the peripheral wall of the outer transmission part. When the outer transmission part moves outwards till the limiting part is aligned with the limiting hole, the limiting part is inserted into the limiting hole so as to prevent the outer transmission part from being separated from the connecting rod, and the outer transmission part is separated from the unlocking shifting wheel. The anti-riot safety performance of the anti-riot lock cylinder is mainly improved. The invention further discloses an anti-riot lock.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, in particular to an explosion-proof lock core and an explosion-proof lock. Background Art

[0002] In order to prevent the protection performance of the door lock from failing after the lock core body of the door lock is violently damaged, a locking member that can actively restrict the rotation of the unlocking dial to open after being violently damaged is usually provided in the lock core structure of the door lock.

[0003] An existing lock core includes an inner lock core body, an outer lock core body, and a connecting rod fixedly connected to both the inner lock core body and the outer lock core body. The inner lock core body is provided with an unlocking handle, the outer lock core body is provided with a lock core shaft, an unlocking dial is arranged between the unlocking handle and the lock core shaft, the unlocking handle is provided with an inner transmission block, the lock core shaft is provided with an outer transmission block, the unlocking dial is in transmission connection with the inner transmission block and in transmission connection with the outer transmission block, and the connecting rod is provided with a fixed block; in the existing lock core, in order to prevent the refrigerant from entering the space between the inner locking body and the outer lock core body and freezing the locking pin, which affects the explosion-proof function during violent unlocking, therefore, in the existing lock core, a protective cover and a sealing gasket are arranged at the inner end of the outer lock core body to prevent the refrigerant from entering between the inner transmission block and the unlocking dial and causing the locking pin to be frozen.

[0004] In the above existing situation, the refrigerant will accumulate in the outer lock core body. As the outer lock core body is frozen, the outer lock core body will gradually become brittle. In this case, when a violent unlocking person uses pliers to clamp the outer lock core body and pulls it forcefully, in the case of the brittle outer lock core body, the outer lock core body and the connecting rod will break directly, resulting in the outer end of the outer transmission block being exposed. Then, the violent unlocking person can drive the unlocking dial to rotate and unlock through the exposed outer transmission block, or can also remove the outer transmission block from the connecting rod and then rotate the unlocking dial to unlock, thereby affecting the installation performance of the lock core. Summary of the Invention

[0005] The object to be achieved by the present invention is to provide an explosion-proof lock core and an explosion-proof lock, which solve the problem that the outer lock core body is missing under violence, resulting in the exposure of the outer transmission block or the unlocking dial, and improve the explosion-proof safety performance of the explosion-proof lock core.

[0006] To achieve the above object, the present invention adopts the following technical solution: An anti-explosion lock core, comprising an outer lock core body, an inner lock core body, and a connecting rod fixedly connecting the outer lock core body and the inner lock core body. An unlocking dial is provided on the connecting rod, and an outer transmission member for drivingly connecting the outer lock core body and the unlocking dial is provided inside the connecting rod. The outer transmission member has a tendency to move outwardly away from the unlocking dial. A connecting member is provided between the inner end of the outer lock core body and the outer end of the outer transmission member. When the outer lock core body is violently damaged and separated from the connecting rod, the connecting member drives the outer transmission member to move outwardly. A limiting structure is provided on the connecting rod, and the outer transmission member is provided with a limiting member having a tendency to protrude from the outer peripheral wall of the outer transmission member. When the outer transmission member moves outwardly until the limiting member is aligned with the limiting structure, the limiting structure locks the limiting member to limit the axial displacement of the outer transmission member and the outer transmission member is separated from the unlocking dial.

[0007] After adopting the above technical solution, the present invention has the following advantages: The outer lock core body and the inner lock core body are fixedly connected by a connecting rod, improving the stability between the outer lock core body and the inner lock core body. An unlocking dial is provided on the connecting rod, and unlocking is facilitated by the rotation of the unlocking dial, thereby facilitating the user to unlock. The outer transmission member is arranged between the outer lock core body and the unlocking dial to ensure that the rotation of the outer lock core body can drive the unlocking dial to rotate; when the outer lock core body is violently damaged and separated from the connecting rod, the connecting member drives the outer transmission member to move outwardly during the movement. When the limiting member is aligned with the limiting structure, the limiting structure locks the limiting member, preventing the outer transmission member from completely separating from the connecting rod along with the fracture of the outer lock core body, avoiding the exposure of the unlocking dial, and further preventing violent unlocking personnel from unlocking through the exposed unlocking dial; after the limiting structure locks the limiting member, the position of the outer transmission member in the inner and outer directions is locked, preventing violent unlocking personnel from pushing the outer transmission block inwardly to cause the outer transmission member to drive the unlocking dial to rotate; the outer transmission member is separated from the unlocking dial, preventing violent unlocking personnel from technically driving the unlocking dial to rotate through the exposed outer transmission member to unlock; through the insertion of the limiting member and the limiting structure on the connecting rod, the separation of the outer transmission member from the connecting rod can be blocked, and the rotation of the outer transmission member can also be blocked, further improving the anti-explosion effect of the lock core and enhancing the safety performance of the lock core.

[0008] Further, the outer lock core body has an outer lock core housing, and the connecting rod has an outer connecting portion integrally connected to the outer lock core housing. The size of the outer end of the outer connecting portion is smaller than the size of the inner end of the outer connecting portion, so that a stress step is formed between the outer lock core housing and the outer end of the outer connecting portion.

[0009] By adopting the foregoing technical solution, a stress step is formed between the outer end with a smaller size of the outer connecting portion and the outer lock core housing. When the outer lock core body is violently damaged, the fracture occurs at the stress step. After ensuring that the outer lock core body is violently damaged and missing, the outer connecting portion still blocks the outside of the unlocking dial, preventing violent unlocking personnel from using tools to drive the unlocking dial to rotate to unlock.

[0010] Further, the connecting member includes a connecting pin. The outer end of the outer transmission member has a blocking structure. The projection of the blocking structure and the connecting pin overlap in the inner and outer directions, and the connecting pin is located inside the blocking structure.

[0011] With the foregoing technical solution, when the outer lock core is damaged, the outer lock core drives the connecting pin to move outwards. When the connecting pin abuts against the blocking structure, it drives the outer transmission member to move outwards, ensuring that the outer transmission member can move outwards with the outer lock core and disengage from the unlocking dial when the outer lock core is violently damaged. At the same time, it ensures that the limiting member can be aligned with the limiting structure and locked by the limiting structure, preventing the outer transmission member from completely disengaging from the connecting rod and exposing the unlocking dial.

[0012] Further, the connecting member includes a first elastic member and a first limiting pin. The inner end of the outer lock core is provided with a mounting groove extending radially along the outer lock core. The first elastic member and the first limiting pin are located in the mounting groove, and the first limiting pin is located between the outer transmission member and the first elastic member. The outer end of the outer transmission member has a blocking structure. The projection of the first limiting pin and the blocking structure overlaps in the inner and outer directions, and the first limiting pin is located inside the blocking structure.

[0013] With the foregoing technical solution, the connecting member is set in the form of a first elastic member and a first limiting pin. Through the abutting action of the first elastic member on the first limiting pin, it is ensured that the projection of the first limiting pin and the blocking structure overlaps in the inner and outer directions of the lock core. Furthermore, when the outer lock core is disengaged from the connecting rod under violent damage, the first limiting pin can drive the outer transmission member to move outwards, ensuring the anti-explosion safety performance of the lock core.

[0014] Further, the inner wall of the mounting groove is provided with a supporting step. One end of the first limiting pin close to the first elastic member is provided with a supporting rib, and the supporting rib supports on the supporting step to stably position the first limiting pin in the mounting groove.

[0015] With the foregoing technical solution, the first limiting pin is supported in the mounting groove by the supporting rib and the supporting step, preventing the first limiting pin from disengaging from the mounting groove and affecting the anti-explosion safety performance of the lock core; improving the stability of the first limiting pin in the mounting groove.

[0016] Further, the connecting member includes two limiting pins, which are respectively arranged on both sides of the outer transmission member. The outer end of the outer transmission member has a blocking structure. Both of the two limiting pins are located inside the blocking structure, and the projections of the two limiting pins and the blocking structure overlap in the inner and outer directions.

[0017] With the foregoing technical solution, the connecting member is arranged in the form of two limit pins. Since the projections of the two limit pins and the blocking structure overlap in the inner and outer directions of the lock core, it is ensured that when the two limit pins are separated from the connecting rod along with the outer lock core body, they are both in contact with the blocking structure, ensuring that the two limit pins drive the outer transmission member to move outward until the outer transmission member disengages from the unlocking dial, thereby improving the safety performance of the lock core.

[0018] Further, there are two limit structures, and the two limit structures are located on both sides of the outer transmission member. There are also two limit members, and the two limit members correspond to the two limit structures one by one.

[0019] With the foregoing technical solution, two limit structures and two limit members are provided and correspond to each other one by one. When the outer transmission member moves outward until the limit members are aligned with the limit structures, the two limit members are respectively locked by the corresponding limit structures, improving the stability when the outer transmission member is locked. With the arrangement of the two limit members and the two limit structures, after one limit member is locked by the limit structure, it can also limit the axial displacement of the outer transmission member, ensuring that the limit member can be inserted into the limit structure, thereby improving the safety performance of the lock core.

[0020] Further, a second elastic member is provided between the two limit members so that both limit members have a tendency to protrude from the outer peripheral wall of the outer transmission member and lock with the limit structure.

[0021] With the foregoing technical solution, the two limit members are abutted outward by the second elastic member provided in the middle, ensuring that the limit members can protrude from the outer peripheral wall of the outer transmission member and lock in the limit structure when aligned with the limit structure, improving the explosion-proof safety performance of the lock core and the stability after the outer transmission member is locked.

[0022] Further, the outer end of the connecting rod has a limit surface facing the unlocking dial, and an annular rib is provided on the outer peripheral wall of the outer transmission member. When the outer transmission member moves outward until the annular rib abuts against the limit surface, the limit members are aligned with the limit structures and the limit structures lock the limit members to limit the axial displacement of the outer transmission member.

[0023] With the foregoing technical solution, the annular rib on the outer transmission member abuts against the limit surface, preventing the outer transmission member from moving outward and disengaging from the connecting rod; and when the annular rib abuts against the limit surface, it is ensured that the limit members are aligned with the limit structures, thereby ensuring that the outer transmission member can be locked on the connecting rod through the locking of the limit members and the limit structures, preventing the outer transmission member from disengaging from the connecting rod and exposing the unlocking dial, and at the same time improving the stability of the outer transmission member being locked after the outer lock core body is violently damaged.

[0024] Further, the inner end of the outer transmission member has an unlocking member, and an unlocking groove is provided on the unlocking dial. After the unlocking member is inserted into the unlocking groove, it drives the unlocking dial to rotate to unlock.

[0025] With the foregoing technical solution, the outer transmission member and the unlocking dial are driven by the insertion of the unlocking member into the unlocking groove, ensuring the stability of the transmission between the outer transmission member and the unlocking dial. At the same time, it is convenient for the outer transmission member to drive the unlocking member to disengage from the unlocking groove during the outward movement, improving the safety performance of the lock core.

[0026] Further, the unlocking member is coaxially arranged with the outer transmission member, and the unlocking groove is coaxially arranged with the unlocking dial. The unlocking member has a first torque transmission surface, and the unlocking groove has a second torque transmission surface. The first torque transmission surface and the second torque transmission surface are complementary to each other. The unlocking member and the unlocking groove form a plug-in connection that restricts relative rotation and allows axial movement.

[0027] With the foregoing technical solution, by coaxially arranging the unlocking member with the outer transmission member and the unlocking groove with the unlocking dial, the coaxial arrangement reduces the processing difficulty of the unlocking member and the unlocking groove, thereby reducing the assembly difficulty of the lock core. The complementary first torque transmission surface and second torque transmission surface of the unlocking member and the unlocking groove in the circumferential direction enable the unlocking member to drive the unlocking dial to rotate and unlock more stably, ensuring that the user can unlock the lock normally with the key.

[0028] Further, a third elastic member is provided between the outer transmission member and the unlocking dial to make the outer transmission member tend to move outward.

[0029] With the foregoing technical solution, by arranging a third elastic member between the outer transmission member and the unlocking dial, the outer transmission member moves outward after the key is withdrawn from the outer lock core body, ensuring that the unlocking member and the unlocking groove are disengaged when the key is not used to unlock, improving the anti-technical unlocking performance of the lock core and enhancing the safety performance of the lock core.

[0030] Further, the unlocking member is eccentrically arranged on the outer transmission member, and the unlocking groove is eccentrically arranged on the unlocking dial corresponding to the unlocking member. The unlocking member is inserted into the unlocking groove to drive the unlocking dial to rotate and unlock.

[0031] With the foregoing technical solution, by eccentrically arranging both the unlocking member and the unlocking groove, the difficulty of mutual insertion between the unlocking member and the unlocking groove when the key is not used is increased, thereby increasing the difficulty of technical unlocking and enhancing the safety performance of the lock core.

[0032] Further, a fourth elastic member and a pushing member located outside the fourth elastic member are provided inside the inner lock core body. The outer end of the fourth elastic member abuts against the pushing member. The pushing member is coaxially arranged with the unlocking dial and the outer end of the pushing member abuts against the inner end face of the outer transmission member.

[0033] With the foregoing technical solution, when the unlocking member and the unlocking groove are eccentrically arranged, a fourth elastic member and a pushing member are arranged inside the inner lock core. The outer transmission member is pushed outwards by the fourth elastic member and the pushing member to ensure that the unlocking member can be disengaged from the unlocking groove when the key is withdrawn from the outer lock core, thereby increasing the difficulty of technical unlocking and improving the safety performance of the lock core.

[0034] Further, the inner end of the outer transmission member is eccentrically provided with an unlocking member, the inner lock core is provided with an inner transmission member, the unlocking dial is axially fixed to the connecting rod, the inner transmission member is in transmission connection with the unlocking dial, and the outer end of the inner transmission member is provided with an unlocking groove corresponding to the unlocking member. The unlocking member extends into the unlocking groove so that the outer transmission member drives the unlocking dial to rotate and unlock through the inner transmission member.

[0035] With the foregoing technical solution, by axially fixing the unlocking dial on the connecting rod, the stability of the unlocking dial on the connecting rod is improved, and then the inner transmission member drives the unlocking dial to rotate to ensure that the outer transmission member can drive the unlocking dial to rotate and unlock.

[0036] Further, the unlocking dial includes an unlocking portion located on the outer side and a mounting portion located on the inner side. The inner wall of the mounting portion is provided with a convex block, and the outer peripheral wall of the inner end of the inner transmission member is provided with a groove. The convex block is inserted into the groove so that the mounting portion is in transmission connection with the inner transmission member.

[0037] With the foregoing technical solution, the unlocking dial is set into two parts, namely an unlocking portion and a mounting portion. By axially fixing the mounting portion to the connecting rod, the stability of the unlocking dial is improved. The unlocking portion is used for unlocking or locking the door, improving the stability of the unlocking dial for unlocking. The mounting portion is inserted into the groove on the inner transmission portion through the convex block to ensure that the inner transmission member can drive the unlocking dial to rotate and unlock.

[0038] Further, the inside of the connecting rod has a connecting sleeve, the outer peripheral wall of the inner transmission member has a first limiting portion, the inner peripheral wall of the inner end of the connecting sleeve has a second limiting portion, and the outer side surface of the second limiting portion abuts against the inner side surface of the first limiting surface to limit the connecting rod in the inner and outer directions. The outer end of the connecting sleeve is tightly connected to the connecting rod, and the connecting sleeve shields the unlocking portion and the mounting portion in the radial direction.

[0039] With the foregoing technical solution, the stability of the connecting sleeve in the axial direction is improved by the abutment of the first limiting portion and the second limiting portion in the axial direction; then the outer end of the connecting sleeve is tightly connected to the connecting rod, so that the connecting sleeve shields the unlocking portion and the mounting portion in the radial direction, preventing the unlocking dial from being exposed after the outer lock core is violently damaged and affecting the safety performance of the lock core; the inner end of the connecting sleeve is axially limited with the inner transmission member and the outer end is tightly connected to the connecting rod, thereby improving the stability of the remaining part of the outer end of the connecting rod after the outer lock core is violently damaged, increasing the difficulty for the violent unlocking personnel to continuously damage the remaining part of the outer end of the connecting rod and cause the unlocking dial to be exposed, improving the stability of the unlocking dial, and improving the safety performance of the lock core.

[0040] Further, the outer end of the connecting rod has a mounting notch with an opening facing the inner lock core body and a connecting piece that shields the mounting notch on the outside of the mounting notch. The outer peripheral wall of the outer end of the connecting sleeve has a fixing step that is tightly connected to the connecting rod. The fixing step is provided at the mounting notch, and the outer peripheral wall of the fixing step is flush with the outer peripheral wall of the outer end of the unlocking dial to shield the outer end of the unlocking dial.

[0041] With the foregoing technical solution, after a violent unlocking person violently disassembles the outer lock core body, they will attempt to remove the outer end of the connecting rod, causing the unlocking part of the unlocking dial to be exposed, facilitating the violent unlocking person to use tools to rotate the unlocking part; by providing a mounting notch and a connecting piece that shields the mounting notch at the outer end of the connecting rod, and installing the fixing step on the connecting sleeve in the mounting notch, when the outer lock core body is violently disassembled, the connecting piece and the fixing step block the outside of the unlocking dial, and through the setting that the outer peripheral wall of the fixing step is flush with the outer peripheral wall of the outer end of the unlocking dial, it is avoided that the outer end face of the unlocking dial is exposed, and it is avoided that the violent unlocking person uses tools to drive the exposed unlocking dial to unlock; in addition, the outer end of the connecting sleeve is tightly connected to the connecting rod through the fixing step, and the inner end is axially fixed by the abutment of the second limiting part and the first limiting part, improving the stability of the connecting sleeve and further improving the safety performance of the lock core.

[0042] To achieve the above object, the present invention adopts the following technical solution: An anti-explosion lock includes a lock body and the anti-explosion lock core described above.

[0043] With the foregoing technical solution, when the anti-explosion lock core is installed on the anti-explosion lock, when the outer lock core body is violently damaged and the outer lock core body is missing, the connecting piece drives the outer transmission member to move outward with the outer lock core body, causing the outer transmission member to disengage from the unlocking dial, preventing the violent unlocking person from driving the unlocking dial to rotate and unlock through the outer transmission member; when the limiting member aligns with the limiting structure, the limiting structure locks the limiting member, thereby axially locking the outer transmission member and preventing the outer transmission member from continuously moving outward and disengaging from the connecting rod after disengaging from the unlocking dial, avoiding still being able to drive the unlocking dial to rotate and unlock through the outer transmission member; preventing the unlocking dial from being exposed and being picked by technical means; thereby improving the safety performance of the anti-explosion lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below with reference to the accompanying drawings:

[0045] Figure 1 It is a schematic diagram of an anti-explosion lock core of the present invention;

[0046] Figure 2 It is a structural diagram of the connecting rod and the outer lock core housing of the present invention;

[0047] Figure 3 It is an overall cross-sectional view of the anti-explosion lock core in the present invention;

[0048] Figure 4 Schematic diagram of the installation of the connecting pin in the present invention;

[0049] Figure 5 For the present invention Figure 3 Enlarged view at location A in the present invention;

[0050] Figure 6 Schematic diagram of the supporting rib and the supporting step in the present invention;

[0051] Figure 7 Schematic diagram of the limit pin in the present invention;

[0052] Figure 8 For the present invention Figure 7 Enlarged view at location B in the present invention;

[0053] Figure 9 Exploded view of the outer transmission part and the unlocking dial in the present invention;

[0054] Figure 10 For the present invention Figure 3 Enlarged view at location C in the present invention;

[0055] Figure 11 Schematic diagram of the eccentric setting of the unlocking part and the unlocking groove in the present invention;

[0056] Figure 12 Schematic diagram of the installation of the connecting sleeve in the present invention;

[0057] Figure 13 Exploded view of the connecting sleeve and the inner transmission part in the present invention;

[0058] Figure 14 Schematic diagram of the fixing step and the installation notch in the present invention. Detailed implementation manners

[0059] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0060] The terms "first", "second", etc. (if any) in the description and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used before a technical feature to make a distinction, it does not necessarily imply the existence of "first". It should be understood that in the present invention, "comprising" and "having" and any of their variations are intended to cover non-exclusive inclusion. It should be understood that in the present invention, "a plurality of" means two or more. "And / or" is merely a description of the relationship between associated objects, indicating that three relationships may exist. For example, X and / or Y may represent: X exists alone, X and Y exist simultaneously, and Y exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "Comprising X, Y, and Z", "comprising X, Y, Z" means that all of X, Y, and Z are included, "comprising X, Y, or Z" means that one of X, Y, and Z is included, and "comprising X, Y, and / or Z" means that any one or any two or all three of X, Y, and Z are included.

[0061] The technical solution of the present invention will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0062] As Figure 1 shown, the present invention provides an anti-explosion lock core, which includes an outer lock core body 1, an inner lock core body 2, and a connecting rod 3 fixedly connecting the outer lock core body 1 and the inner lock core body 2. An unlocking dial 4 is provided on the connecting rod 3, and the unlocking dial 4 is rotatably connected to the connecting rod 3. As Figure 3 shown, an outer transmission member 5 for drivingly connecting the outer lock core body 1 and the unlocking dial 4 is provided inside the connecting rod 3. The outer end of the outer transmission member 5 extends into the outer lock core body 1. When the user unlocks, the key is inserted into the keyhole of the outer lock core body 1. After the key is inserted in place, the key is turned to drive the outer lock core body 1 to rotate. The part of the outer end of the outer transmission member 5 extending into the outer lock core body 1 drives the outer transmission member 5 to rotate, and then drives the unlocking dial 4 to rotate to unlock.

[0063] In this embodiment, as Figure 3 and Figure 4As shown, the outer transmission member 5 has a tendency to move outward and disengage from the unlocking dial wheel 4. A connecting member 6 is provided between the inner end of the outer lock core body 1 and the outer end of the outer transmission member 5. When the connecting member 6 disengages from the connecting rod 3 under violent destruction of the outer lock core body 1, it drives the outer transmission member 5 to move outward; a limiting structure 31 is provided on the connecting rod 3, and a limiting member 51 is provided on the outer transmission member 5, which has a tendency to protrude from the outer peripheral wall of the outer transmission member 5. When the outer lock core body 1 disengages from the connecting rod 3 under violent destruction, the connecting member 6 drives the outer transmission member 5 to move outward with the outer lock core body 1. When the limiting member 51 is aligned with the limiting structure 31, the limiting member 51 protrudes from the outer peripheral wall of the outer transmission member 5 under the tendency of protruding from the outer peripheral wall of the outer transmission member 5 and is locked by the limiting structure 31, thereby forming a lock in the axial direction for the outer transmission member 5, preventing the outer transmission member 5 from moving outward and completely disengaging from the connecting rod 3 under violent destruction, and further preventing the unlocking dial wheel 4 from being exposed, improving the safety performance of the anti-violence lock core. When the outer transmission member 5 moves outward until the limiting member 51 extends into the limiting structure 31, the outer transmission member 5 disengages from the unlocking dial wheel 4, and the outer transmission member 5 can no longer drive the unlocking dial wheel 4 to rotate and unlock, further improving the safety performance of the anti-violence lock core. The insertion of the limiting member 51 and the limiting structure 31 also locks the position of the outer transmission member 5 in the axial direction, preventing the user from causing unlocking by pushing the outer transmission member 5 inward, and further preventing technical unlocking after the outer lock core body 1 is violently damaged. In this embodiment, the limiting structure 31 is a limiting hole. When the limiting structure 31 locks the limiting member 51, the limiting member 51 extends into the limiting hole, and the axial displacement of the outer transmission member 5 is restricted by the blocking of the two hole walls of the limiting hole in the axial direction. At this time, the inner end of the outer transmission member 51 disengages from the unlocking dial wheel 4, thereby achieving the effect of preventing violent unlocking of the lock core. In this embodiment, the limiting structure 31 can also be an annular limiting groove. When the limiting member 51 is inserted into the annular limiting groove at this time, the inner end of the outer transmission member 5 is completely disengaged from the unlocking dial wheel 4.

[0064] In this embodiment, the connecting rod 3 includes an inner connecting portion 37 and an outer connecting portion 36. An accommodation notch 371 for accommodating the unlocking dial 4 is formed between the inner connecting portion 37 and the outer connecting portion 36. The outer lock core body 1 has an outer lock core housing 12, and the outer lock core housing 12 is integrally formed with the outer end of the outer connecting portion 36. The size of the outer end of the outer connecting portion 36 is smaller than that of the inner end of the outer connecting portion 36, so that a stress step 121 is formed between the outer lock core housing 12 and the outer end of the outer connecting portion 36. Specifically, a stress groove is provided on the outer peripheral wall of the outer end of the outer connecting portion 36. One side wall of the stress groove is located on the inner end face of the outer lock core housing 12. The stress groove makes the size of the outer end of the outer connecting portion 36 smaller than that of the inner end of the outer connecting portion 36, so that one wall of the stress groove forms a stress step 121. When the outer lock core body 1 is violently disassembled and broken, the breaking position is at the stress step 121. Further, when the outer lock core body 1 is missing, the outer connecting portion 36 blocks the outside of the unlocking dial 4, preventing the violent unlocking person from using tools to turn the unlocking dial 4 to unlock. In another embodiment, an inclined surface 361 can also be provided at the outer end of the outer connecting portion 36. The inclined surface 361 makes the size of the outer end of the outer connecting portion 36 gradually increase from outside to inside. A stress step 121 is formed between the outermost end of the inclined surface 361 and the outer lock core housing 12. When the outer lock core is violently damaged, the breaking position is at the outer end of the outer connecting portion 36, preventing the middle of the connecting rod 3 from breaking and allowing the violent unlocking person to technically turn the unlocking dial 4 to unlock. In this embodiment, the setting of the inclined surface 361 ensures that when the violent unlocking person continues to hold the outer connecting portion 36 when the outer lock core body 1 is missing, it cannot be stably held, increasing the difficulty for the violent unlocking person to further violently disassemble the outer connecting portion 36, thereby improving the safety performance of the anti-violence lock core.

[0065] To ensure that the outer lock core body 1 can drive the outer transmission member 5 to move outward, such as Figure 3 and Figure 4As shown, the connecting member 6 includes a connecting pin 61, which is fixed to the inner end of the outer lock core body 1, and the connecting pin 61 is arranged along the radial direction of the outer lock core body 1, and the outer end of the outer transmission member 5 has a blocking structure 8; specifically, the blocking structure 8 is a blocking rib, and the blocking rib is located at the outermost end of the outer transmission member 5, one end of the connecting pin 61 is fixed to the outer lock core body 1, and the other end is close to the outer transmission member 5, and the blocking rib overlaps with the projection of the connecting pin 61 in the inner and outer directions of the outer lock core body 1, and the connecting pin 61 is located on the inner side of the blocking rib. When the outer lock core body 1 is violently damaged and connected to the connecting pin 61, When the connecting rod 3 is disengaged, the connecting pin 61 moves outward with the outer lock core body 1 and abuts against the blocking rib, thereby driving the outer transmission member 5 to move outward; wherein the blocking rib overlaps with the projection of the connecting pin 61 in the inner and outer directions of the outer lock core body 1, which can ensure that the connecting pin 61 can abut against the blocking rib in the inner and outer directions of the outer lock core body 1, and the connecting pin 61 is located on the inner side of the blocking rib, ensuring that the connecting pin 61 abuts against the blocking rib during the process of moving outward, thereby driving the outer transmission member 5 to move outward, and further ensuring that the limiting member 51 can be aligned with the limiting structure 31 and locked by the limiting structure 31. In another embodiment, a strip groove 52 is provided at the outer end of the external transmission member 5, and the length direction of the strip groove 52 is consistent with the length direction of the external transmission member 5. At this time, the blocking structure 8 is the groove wall at the outermost end of the strip groove 52, and the connecting pin 61 extends into the strip groove 52. The key is inserted into the lock hole of the external lock core body 1 and pushes the external transmission member 5 to move inward. After the key exits the external lock core body 1, the external transmission member 5 will slide in the inward and outward directions with the tendency to move outward. The setting of the strip groove 52 provides space for the sliding of the external transmission member 5 in the inward and outward directions, thereby avoiding the blocking structure 8 from affecting the movement of the external transmission member 5, and ensuring that the external transmission member 5 can be normally connected with the unlocking dial wheel 4 for transmission to unlock.

[0066] In another embodiment, if Figure 3 and Figure 5As shown, the connecting member 6 includes a first elastic member 62 and a first limit pin 63. The inner end of the outer lock core body 1 is provided with an installation groove 11 extending radially. The first elastic member 62 and the first limit pin 63 are located in the installation groove 11, and the first limit pin 63 is located between the outer transmission member 5 and the first elastic member 62. The outer end of the outer transmission member 5 has a blocking structure 8, and the projections of the first limit pin 63 and the blocking structure 8 overlap in the inner and outer directions. The first limit pin 63 is located inside the blocking structure 8. Specifically, the blocking structure 8 is a blocking rib, and the blocking rib is located at the outermost end of the outer transmission member 5. When the outer lock core body 1 is violently damaged and pushed away from the connecting rod 3, during the process of the first limit pin 63 moving outwards with the outer lock core body 1, it abuts against the inner side wall of the blocking rib, thereby driving the outer transmission member 5 to move outwards. When the limiting member 51 moves outwards with the outer transmission member 5 to align with the limiting structure 31, the limiting member 51 is locked by the limiting structure 31, thereby locking the outer transmission member 5, preventing the outer transmission member 5 from detaching from the connecting rod 3 and causing the unlocking dial 4 to be exposed, and improving the anti-violence safety performance of the lock core. In another embodiment, when a strip-shaped groove 52 is provided at the outer end of the outer transmission member 5, the end of the first limit pin 63 away from the first elastic member 62 extends into the strip-shaped groove 52. The groove wall located on the outermost side of the strip-shaped groove 52 is the blocking structure 8. When the outer lock core body 1 is damaged and detached from the connecting rod 3, the outer lock core body 1 abuts against the blocking structure 8 through the first limit pin 63, thereby driving the outer transmission member 5 to move outwards. When the limiting member 51 aligns with the limiting structure 31, the limiting member 51 is locked by the limiting structure 31, thereby locking the outer transmission member 5 on the connecting rod 3, preventing the outer transmission member 5 from detaching from the connecting rod 3 and causing the unlocking dial 4 to be exposed. The locked outer transmission member 5 cannot move towards the inner lock core body 2 either, preventing technical unlocking after violent damage due to the inner end of the outer transmission member 5 being in transmission connection with the unlocking dial 4, thereby achieving the effects of anti-violence and anti-technical unlocking. The outer transmission member 5 is locked on the connecting rod 3, preventing the unlocking dial 4 from being exposed and being technically unlocked.

[0067] To improve the stability of the first limit pin 63 in the installation groove 11, as Figure 5 and Figure 6 shown, the inner wall of the installation groove 11 is provided with a support step 111. The support step 111 is located on one side of the installation groove 11 close to the outer end of the outer transmission member 5. A support rib 631 is provided on the end of the first limit pin 63 close to the first elastic member 62. Under the abutting action of the first elastic member 62, the support rib 631 supports on the support step 111, ensuring the stability of the first limit pin 63 in the installation groove 11 and preventing the first limit pin 63 from detaching from the installation groove 11.

[0068] In another embodiment, as Figure 7 and Figure 8As shown, the connecting member 6 includes two limit pins 64. The two limit pins 64 are respectively arranged on both sides of the outer transmission member 5. The outer end of the outer transmission member 5 has a blocking structure 8. Both limit pins 64 are located inside the blocking structure 8. The projections of the two limit pins 64 and the blocking structure 8 in the inner and outer directions overlap. Specifically, the blocking structure 8 in this embodiment is a blocking rib. When the outer lock core body 1 drives the two limit pins 64 to move outwards, the two limit pins 64 abut against the inner side wall of the blocking rib, thereby driving the outer transmission member 5 to slide outwards. When the limiting member 51 is aligned with the limiting structure 31, the limiting member 51 is locked by the limiting structure 31, so as to lock the outer transmission member 5 on the connecting rod 3. At this time, the outer transmission member 5 is disengaged from the unlocking dial 4 and can no longer transmit power, preventing violent unlocking personnel from unlocking through the exposed outer transmission member 5 or unlocking by pushing the outer transmission member 5 inwards technically, and improving the anti-violence safety performance of the lock core.

[0069] In order to improve the accuracy of the limiting structure 31 in locking the limiting member 51 to limit the axial displacement of the outer transmission member 5, as Figure 8 shown, there are two limiting structures 31. The two limiting structures 31 are located on both sides of the outer transmission member 5. There are also two limiting members 51. The two limiting members 51 correspond to the two limiting structures 31 one by one. Specifically, the axes of the two limiting structures 31 are on the same straight line, and the axes of the two limiting members 51 are also on the same straight line. A second elastic member 511 is arranged between the two limiting members 51, so that both limiting members 51 have a tendency to protrude from the outer peripheral wall of the outer transmission member 5 and lock with the limiting structure 31. When the limiting structure 31 is aligned with the limiting member 51, the limiting member 51 is locked by the limiting structure 31 under the action of the second elastic member 511. The arrangement of the two limiting members 51 and the two limiting structures 31 ensures that the limiting member 51 can be locked in the limiting structure 31, improving the accuracy of the outer transmission member 5 being locked. Further, as Figure 5 and Figure 8 shown, when the limiting structure 31 is a limiting hole, the limiting hole extends appropriately in the circumferential direction of the outer transmission member 5 to prevent the outer transmission member 5 from rotating during the process of moving outwards with the outer lock core body 1. The appropriate circumferential extension of the limiting hole ensures that the limiting member 51 can be inserted into the limiting hole to lock the outer transmission member 5.

[0070] In another embodiment, as Figure 8 and Figure 9As shown in the figure, in order to ensure that the limiting member 51 can be aligned with the limiting structure 31, the outer end of the connecting rod 3 has a limiting surface 33, the limiting surface 33 faces the inner lock core body 2, and there is an annular rib 54 on the outer peripheral wall of the outer transmission member 5. When the outer transmission member 5 moves outward until the annular rib 54 abuts against the limiting surface 33, the limiting member 51 is aligned with the limiting structure 31 and the limiting structure 31 locks the limiting member 51 to limit the axial displacement of the outer transmission member 5; through the abutment of the annular rib 54 and the limiting surface 33, it is ensured that the limiting structure 31 and the limiting member 51 can be aligned in the radial direction of the outer transmission member 5, avoiding the misalignment of the limiting structure 31 and the limiting member 51 in the axial direction and thus unable to lock the outer transmission member 5 well.

[0071] In order to ensure the stability of the transmission between the outer transmission member 5 and the unlocking dial 4, as Figure 9 and Figure 10 shown, the inner end of the outer transmission member 5 has an unlocking member 7, and there is an unlocking groove 41 on the unlocking dial 4. When the key unlocks, the outer transmission member 5 moves inward, and the unlocking member 7 is inserted into the unlocking groove 41. When the outer lock core body 1 is rotated, the outer transmission member 5 can drive the unlocking dial 4 to rotate to unlock through the unlocking member 7; specifically, a receiving groove 71 is provided at the inner end of the outer transmission member 5, the length of the receiving groove 71 in the axial direction of the outer transmission member 5 is greater than the length of the unlocking member 7, a spring 72 is arranged in the receiving groove 71, the unlocking member 7 is located between the spring 72 and the unlocking groove 41, and the unlocking member 7 protrudes from the inner end face of the outer transmission member 5 under the action of the spring 72; when the user unlocks with the key, the key pushes the outer transmission member 5 to move inward, the unlocking member 7 is inserted into the unlocking groove 41, and the key is twisted to drive the unlocking dial 4 to rotate and unlock through the outer transmission member 5 and the unlocking member 7; when the unlocking member 7 is not aligned with the unlocking groove 41, resulting in the unlocking member 7 not being accurately inserted into the unlocking groove 41 during the inward movement of the outer transmission member 5, the unlocking member 7 abuts against the unlocking dial 4 and presses against the spring 72, so that the unlocking member 7 completely enters the receiving groove 71 to facilitate the key to be inserted in place. After the key is inserted in place, the key is rotated to drive the outer transmission member 5 and the unlocking member 7 to rotate. When the unlocking member 7 rotates to be directly opposite to the unlocking groove 41, the unlocking member 7 protrudes from the receiving groove 71 under the action of the spring 72 and is inserted into the unlocking groove 41, so that the unlocking member 7 can drive the unlocking dial 4 to rotate and unlock.

[0072] In order to ensure that the unlocking member 7 and the unlocking groove 41 can remain disengaged after the key is withdrawn from the outer lock core body 1, as Figure 9 and Figure 10As shown, a third elastic member 53 is provided between the outer transmission member 5 and the unlocking dial 4 to make the outer transmission member 5 tend to move outwards. Specifically, an annular rib 54 is provided on the outer peripheral wall of the inner end of the outer transmission member 5. One end of the third elastic member 53 abuts against the unlocking dial 4, and the other end abuts against the annular rib 54. The third elastic member 53 is in a compressed state. When the key is withdrawn from the outer lock cylinder 1, the third elastic member 53 pushes the outer transmission member 5 outwards, causing the unlocking member 7 to move outwards with the outer transmission member 5 and disengage from the unlocking groove 41, preventing unlocking by driving the unlocking dial 4 to rotate through the rotation of the outer transmission member 5 during technical unlocking, thereby improving the security performance of the lock cylinder.

[0073] In this embodiment, as Figure 9 and Figure 10 shown, the unlocking member 7 and the outer transmission member 5 are coaxially arranged, and the unlocking groove 41 and the unlocking dial 4 are coaxially arranged. To ensure that the unlocking member 7 can drive the unlocking dial 4 to rotate when inserted into the unlocking groove 41, the unlocking member 7 has a first torque transmission surface, and the unlocking groove 41 has a second torque transmission surface. The first torque transmission surface and the second torque transmission surface are complementary to each other. The unlocking member 7 and the unlocking groove 41 form a plug-in connection that restricts relative rotation and allows axial movement, ensuring that the unlocking member 7 can drive the unlocking dial 4 to rotate and unlock.

[0074] To ensure that the unlocking dial 4 is at the same angle when the key is pulled out, as Figure 9 shown, a convex strip 73 is protrudingly provided on the outer peripheral wall of the unlocking member 7 to make the unlocking member 7 and the unlocking groove 41 be plugged in only at one axial corresponding position. An auxiliary groove 411 communicating with the unlocking groove 41 is provided on the unlocking dial 4. After the unlocking member 7 and the unlocking groove 41 and the convex strip 73 and the auxiliary groove 411 are aligned, the unlocking member 7 is inserted into the unlocking groove 41. The setting of the convex strip 73 and the auxiliary groove 4114 makes the unlocking member 7 and the unlocking groove 41 have only one corresponding position in the axial direction for plugging, ensuring that the unlocking dial 4 is at the same angle every time the key is inserted and pulled out; in other embodiments, the cross-section of the unlocking member 7 can also be set to a non-centrally symmetric shape, such as a non-equilateral triangle, an irregular quadrilateral shape, etc. The shape of the cross-section of the unlocking groove 41 corresponds to the shape of the cross-section of the unlocking member 7, so that the unlocking member 7 and the unlocking groove 41 can be plugged in only at one corresponding angle to achieve torque transmission and drive the unlocking dial 4 to rotate.

[0075] In another embodiment, as Figure 11As shown, the unlocking member 7 is eccentrically arranged on the outer transmission member 5, and the unlocking groove 41 is correspondingly and eccentrically arranged on the unlocking dial 4 with respect to the unlocking member 7. The eccentric arrangement of the unlocking member 7 and the unlocking groove 41 can itself form torque transmission relative to the outer transmission member 5 and the unlocking dial 4. Therefore, when the unlocking member 7 and the unlocking groove 41 are eccentrically arranged, the cross-sections of the unlocking member 7 and the unlocking groove 41 can be circular, reducing the processing difficulty of the unlocking member 7 and the unlocking groove 41; the cross-sections of the unlocking member 7 and the unlocking groove 41 can also be set into the required shapes according to other requirements.

[0076] In this embodiment, as Figure 11 shown, due to the eccentric arrangement of the unlocking member 7, the presence of the third spring 72 may affect the insertion of the unlocking member 7 into the unlocking groove 41. To ensure the normal operation of the outer transmission member 5 and the unlocking member 7, the inner lock core body 2 is provided with a fourth elastic member 21 and a pushing member 22 located outside the fourth elastic member 21. The pushing member 22 passes through the unlocking dial 4 and can rotate relative to the unlocking dial 4. The outer end of the fourth elastic member 21 abuts against the inner end face of the pushing member 22, and the outer end of the pushing member 22 abuts against the axial center position of the inner end face of the outer transmission member 5. The fourth elastic member 21 keeps pushing the pushing member 22 outwards, so that the outer transmission member 5 has a tendency to move outwards, thereby ensuring that the unlocking member 7 and the unlocking groove 41 are kept disengaged when the lock is not opened, and increasing the difficulty of picking the lock technically.

[0077] In another embodiment, as Figure 12 shown, the unlocking member 7 is eccentrically arranged at the inner end of the outer transmission member 5. The inner lock core body 2 is provided with an inner transmission member 9. The unlocking dial 4 is axially fixed to the connecting rod 3. The inner transmission member 9 is in transmission connection with the unlocking dial 4. The outer end of the inner transmission member 9 is provided with an unlocking groove 41 corresponding to the unlocking member 7. The unlocking member 7 extends into the unlocking groove 41 so that the outer transmission member 5 drives the unlocking dial 4 to rotate and unlock through the inner transmission member 9; the unlocking dial 4 is axially fixed on the connecting rod 3, improving the stability of the unlocking dial 4 and preventing the unlocking dial 4 from moving axially and affecting the stability of the lock core. The inner transmission member 9 is driven to rotate by the unlocking member 7 and the unlocking groove 41, and then the unlocking dial 4 is driven to rotate, improving the stability of the unlocking dial 4 when rotating to unlock.

[0078] In this embodiment, as Figure 12 and Figure 13As shown, in order to ensure the stability of the inner transmission member 9 driving the unlocking dial 4 to rotate, the unlocking dial 4 includes an unlocking portion 43 located on the outer side and a mounting portion 42 located on the inner side. Both the mounting portion 42 and the unlocking portion 43 are provided with through holes 421, and the aperture of the through hole 421 of the mounting portion 42 is smaller than the aperture of the through hole 421 of the unlocking portion 43. The inner hole wall of the through hole 421 of the mounting portion 42 is provided with a convex block 422, and the outer peripheral wall of the inner end of the inner transmission member 9 is provided with a groove 91. The groove 91 extends along the axial direction of the inner transmission member 9. The convex block 422 is inserted into the groove 91, so that when the inner transmission member 9 rotates, it can drive the mounting portion 42 to rotate, and then drive the unlocking portion 43 to rotate to unlock.

[0079] In order to prevent the outer lock core body 1 from being violently damaged, such as Figure 12 and Figure 13 As shown, when a violent unlocking person uses a tool to damage the outer end of the connecting rod 3, it may cause the unlocking portion 43 to be exposed and disassembled or rotated. The inside of the connecting rod 3 has a connecting sleeve 32, and the inner end of the connecting sleeve 32 is located in the through hole 421 of the unlocking portion 43. The outer peripheral wall of the inner transmission member 9 has a first limiting portion 92, and the inner peripheral wall of the inner end of the connecting sleeve 32 has a second limiting portion 322. The connecting sleeve 32 is sleeved on the inner transmission member 9, and the outer side surface of the second limiting portion 322 abuts against the inner side surface of the first limiting portion 92, so as to axially fix the connecting sleeve 32, and the outer end of the connecting sleeve 32 is firmly connected to the connecting rod 3; specifically, the outer end of the connecting sleeve 32 is firmly connected to the outer end of the connecting rod 3 through a fastener 321. When the outer lock core body 1 is damaged and broken, the outermost end of the connecting rod 3 breaks accordingly, resulting in the remaining part of the outer end of the connecting rod 3 being exposed. Through the axial limit between the inner end of the connecting sleeve 32 and the inner transmission member 9 and the firm connection between the outer end of the connecting sleeve 32 and the outer end of the connecting rod 3 through the fastener 321, the stability of the remaining part of the outer end of the connecting rod 3 is improved; and the connecting sleeve 32 shields the unlocking portion 43 in the radial direction, and the connecting sleeve 32 and the inner transmission member 9 also shield the mounting portion 42 in the radial direction, preventing the unlocking portion 43 and the mounting portion 42 from being exposed and being picked by technical means after violent damage.

[0080] It can be understood that, as Figure 13 shown, after the connecting sleeve 32 is arranged inside the connecting rod 3, the limiting structure 31 is located at the outer end of the connecting sleeve 32, ensuring that the limiting structure 31 can be aligned with the limiting member 51 and lock the limiting member 51, improving the anti-violence safety performance of the lock core.

[0081] In another embodiment, after a violent unlocking person violently disassembles the outer lock core body 1, they will try to remove the outer end of the connecting rod 3, so that the unlocking portion 43 of the unlocking dial 4 is exposed, facilitating the violent unlocking person to use a tool to rotate the unlocking portion 43; to further improve the safety performance of the lock core, as Figure 14As shown in the figure, the outer end of the connecting rod 3 has a mounting notch 34 with an opening facing the inner lock core body 2 and a connecting piece 35 that shields the mounting notch 34 on the outside of the mounting notch 34. The outer peripheral wall of the outer end of the connecting sleeve 32 has a fixing step 323 that is tightly connected to the connecting rod 3. The fixing step 323 is provided at the mounting notch 34, and the outer peripheral wall of the fixing step 323 is flush with the outer peripheral wall of the outer end of the unlocking dial 4 to shield the outer end of the unlocking dial 4. By providing the mounting notch 34 and the connecting piece 35 that shields the mounting notch 34 at the outer end of the connecting rod 3 and installing the fixing step 323 on the connecting sleeve 32 in the mounting notch 34, when the outer lock core body 1 is violently disassembled and the connecting rod 3 is further disassembled, at this time, only the connecting piece 35 can be disassembled by a clamping tool, while the outer end of the connecting sleeve 32 is tightly connected to the connecting rod 3 through the fixing step 323, and the inner end is axially fixed by the abutment of the second limiting portion 322 and the first limiting portion 92, increasing the connection strength between the front end of the connecting rod 3 and the connecting sleeve 32, improving the stability of the connecting sleeve 32, and further improving the safety performance of the lock core. Moreover, by setting the outer peripheral wall of the fixing step 323 to be flush with the outer peripheral wall of the outer end of the unlocking dial 4, the outer end face of the unlocking dial 4 is prevented from being exposed, avoiding the possibility that a violent unlocking person uses a tool to drive the exposed unlocking dial 4 to unlock.

[0082] In another embodiment, the limiting structure 31 is a limiting hole. When the limiting member 51 is inserted into the limiting hole, the outer transmission member 5 abuts against the hole walls on two circumferences of the limiting hole to limit the rotation of the outer transmission member 5. At this time, the outer transmission member 5 cannot rotate relative to the outer connecting rod 3. Even if the inner end of the outer transmission member 5 remains inserted into the unlocking dial 4, the unlocking dial 4 cannot be driven to rotate when the outer transmission member 5 cannot rotate. When the limiting structure 31 is a limiting hole and the rotation of the outer transmission member 5 is restricted, the inner end of the outer transmission member 5 can remain inserted into the unlocking dial 4. At this time, it can also play an anti-violence safety performance after the outer lock core body 1 is violently damaged.

[0083] In another embodiment, the present invention also discloses an anti-violence lock, including a lock body and the anti-violence lock core of the above embodiment. When the anti-violence lock core is installed on the anti-violence lock, when the outer lock core body 1 is violently damaged and the outer lock core body 1 is missing, the connecting member 6 drives the outer transmission member 5 to move outward with the outer lock core body 1, so that the outer transmission member 5 is disengaged from the unlocking dial 4, preventing a violent unlocking person from driving the unlocking dial 4 to rotate and unlock through the outer transmission member 5. When the limiting member 51 is aligned with the limiting structure 31, the limiting structure 31 locks the limiting member 51, thereby axially locking the outer transmission member 5 and preventing the outer transmission member 5 from continuously moving outward and disengaging from the connecting rod 3 after being disengaged from the unlocking dial 4, avoiding the unlocking dial 4 being exposed and being picked by technical means to unlock; thereby improving the safety performance of the anti-violence lock.

[0084] In addition to the above preferred embodiments, the present invention has other implementation manners. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection claimed by the present invention.

Claims

1. A riot-proof lock core, comprising an outer lock core body, an inner lock core body and a connecting rod fixedly connecting the outer lock core body and the inner lock core body, the connecting rod being provided with an unlocking dial wheel, the connecting rod being provided with an external transmission member for transmission connection between the outer lock core body and the unlocking dial wheel, the external transmission member having a tendency to move outward and disengage from the lock dial wheel, characterized in that: A connecting piece is provided between the inner end of the outer lock core body and the outer end of the outer transmission member. When the outer lock core body is violently destroyed and disengaged from the connecting rod, the connecting piece drives the outer transmission member to move outward. A limiting structure is provided on the connecting rod. The outer transmission member is provided with a limiting piece with a tendency to protrude from the outer peripheral wall of the outer transmission member. When the outer transmission member moves outward until the limiting piece is aligned with the limiting structure, the limiting structure locks the limiting piece to limit the axial displacement of the outer transmission member and the outer transmission member disengages from the lock dial wheel.

2. The anti-riot lock cylinder according to claim 1, characterized in that: The outer lock core body has an outer lock core shell, and the connecting rod has an outer connecting part integrally connected to the outer lock core shell. The size of the outer end of the outer connecting part is smaller than the size of the inner end of the outer connecting part so that a stress step is formed between the outer lock core shell and the outer end of the outer connecting part.

3. The anti-riot lock cylinder according to claim 1, characterized in that: The connecting member includes a connecting pin, and the outer end of the external transmission member has a blocking structure, the blocking structure overlaps with the projection of the connecting pin in the inner and outer directions, and the connecting pin is located on the inner side of the blocking structure.

4. The anti-riot lock cylinder according to claim 1, characterized in that: The connecting member includes a first elastic member and a first limit pin. The inner end of the outer lock core body is provided with a mounting groove extending radially along the outer lock core body. The first elastic member and the first limit pin are located in the mounting groove, and the first limit pin is located between the outer transmission member and the first elastic member. The outer end of the outer transmission member has a blocking structure. The first limit pin overlaps with the projection of the blocking structure in the inner and outer directions, and the first limit pin is located on the inner side of the blocking structure.

5. The anti-riot lock cylinder according to claim 4, characterized in that: The inner wall of the installation groove is provided with a supporting step, and one end of the first limiting pin close to the first elastic member is provided with a supporting rib, and the supporting rib is supported on the supporting step to stabilize the first limiting pin in the installation groove.

6. The anti-riot lock cylinder according to claim 1, characterized in that: The connecting member includes two limit pins, which are respectively arranged on both sides of the external transmission member. The outer end of the external transmission member has a blocking structure. The two limit pins are both located on the inner side of the blocking structure, and the projections of the two limit pins and the blocking structure in the inner and outer directions overlap.

7. The anti-riot lock cylinder according to claim 1, characterized in that: There are two limit structures, which are located on both sides of the external transmission member. There are also two limit members, and the two limit members correspond to the two limit structures in a one-to-one manner.

8. The anti-riot lock cylinder according to claim 7, characterized in that: A second elastic member is arranged between the two limiting members so that the two limiting members both have a tendency to protrude from the outer peripheral wall of the external transmission member and lock with the limiting structure.

9. The anti-riot lock cylinder according to claim 1, characterized in that: The outer end of the connecting rod has a limiting surface facing the unlocking dial wheel, and the outer peripheral wall of the external transmission member has an annular convex rib. When the external transmission member moves outward until the annular convex rib abuts against the limiting surface, the limiting member is aligned with the limiting structure and the limiting structure locks the limiting member to limit the axial displacement of the external transmission member.

10. The anti-riot lock cylinder according to claim 1, characterized in that: The inner end of the outer transmission member is provided with an unlocking member, and the unlocking dial wheel is provided with an unlocking groove. After the unlocking member is inserted into the unlocking groove, the unlocking dial wheel is driven to rotate to unlock the lock.

11. The anti-riot lock cylinder according to claim 10, characterized in that: The unlocking member is coaxially arranged with the external transmission member, the unlocking groove is coaxially arranged with the unlocking dial wheel, the unlocking member has a first torque transmission surface, the unlocking groove has a second torque transmission surface, the first torque transmission surface and the second torque transmission surface complement each other, and the unlocking member and the unlocking groove form a plug-in connection that limits relative rotation and allows axial movement.

12. The anti-riot lock cylinder according to claim 11, characterized in that: A third elastic member is provided between the external transmission member and the unlocking dial wheel to make the external transmission member have a tendency to move outward.

13. The anti-riot lock cylinder according to claim 10, characterized in that: The unlocking piece is eccentrically arranged on the external transmission piece, and the unlocking groove is eccentrically arranged on the unlocking dial wheel corresponding to the unlocking piece. The unlocking piece is inserted into the unlocking groove to drive the unlocking dial wheel to rotate to unlock.

14. The anti-riot lock cylinder according to claim 13, characterized in that: The inner lock core is provided with a fourth elastic member and a pushing member located outside the fourth elastic member, the outer end of the fourth elastic member abuts against the pushing member, the pushing member is coaxially arranged with the unlocking dial wheel, and the outer end of the pushing member abuts against the inner end surface of the external transmission member.

15. The anti-riot lock cylinder according to claim 1, characterized in that: An unlocking piece is eccentrically arranged at the inner end of the outer transmission part, the inner lock core body is provided with an inner transmission part, the unlocking dial wheel is axially fixed to the connecting rod, the inner transmission part is transmission connected with the unlocking dial wheel, an unlocking groove corresponding to the unlocking piece is arranged at the outer end of the inner transmission part, the unlocking piece extends into the unlocking groove so that the outer transmission part drives the unlocking dial wheel to rotate and unlock through the inner transmission part.

16. The anti-riot lock cylinder according to claim 15, characterized in that: The unlocking dial wheel includes an unlocking part located on the outside and a mounting part located on the inside. The inner wall of the mounting part is provided with a protrusion, and the outer peripheral wall of the inner end of the inner transmission part is provided with a groove. The protrusion is inserted into the groove to connect the mounting part with the inner transmission part in transmission.

17. The anti-riot lock cylinder according to claim 16, characterized in that: The interior of the connecting rod is provided with a connecting sleeve, the outer peripheral wall of the inner transmission part is provided with a first limiting portion, the inner peripheral wall of the inner end of the connecting sleeve is provided with a second limiting portion, the outer side surface of the second limiting portion abuts against the inner side surface of the first limiting surface to limit the connecting rod in the inner and outer directions, the outer end of the connecting sleeve is fastened to the connecting rod, and the connecting sleeve radially blocks the unlocking portion and the mounting portion.

18. The anti-riot lock cylinder according to claim 17, characterized in that: The outer end of the connecting rod has an installation notch opening toward the inner lock core body and a connecting piece on the outside of the installation notch to cover the installation notch. The outer peripheral wall of the outer end of the connecting sleeve has a fixed step fastened to the connecting rod. The fixed step is arranged at the installation notch. The outer peripheral wall of the fixed step is flush with the outer peripheral wall of the outer end of the unlocking dial wheel to cover the outer end of the unlocking dial wheel.

19. A riot-proof lock, characterized in that: It comprises a lock body and a riot-proof lock core as claimed in any one of claims 1 to 18.

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