Lock cylinder mechanism and lock

Abstract

The utility model discloses a lock cylinder mechanism, which belongs to the technical field of locks, solves the problem of lower installation performance of the lock cylinder mechanism under violent damage, and adopts the technical scheme that the lock cylinder mechanism mainly comprises an outer lock cylinder body, an inner lock cylinder body and a connecting rod, an unlocking dial wheel is arranged on the connecting rod, and an outer transmission part is arranged between the connecting rod and the outer lock cylinder body; an elastic part is arranged between the outer transmission piece and the unlocking shifting wheel, an unlocking groove is formed in the unlocking shifting wheel, an unlocking piece matched with the unlocking groove in an inserted connection mode is arranged at the inner end of the outer transmission piece, and complementary torque transmission faces are arranged between the unlocking piece and the unlocking groove. After the key is inserted into the outer lock cylinder body, the unlocking piece extends into the unlocking groove and drives the unlocking shifting wheel to rotate through the torque transmission face so as to unlock, and after the key retreats from the outer lock cylinder body, the elastic part abuts against the outer transmission piece outwards till the unlocking piece is disengaged from the unlocking groove. The unlocking difficulty of the anti-riot technology of the lock cylinder mechanism is improved, and then the safety performance of the lock cylinder mechanism is improved. The utility model further discloses a lock.

Description

Technical Field

[0001] This utility model relates to the technical field of locks, and in particular to a lock cylinder mechanism and a lock. Background Technology

[0002] Locks are a common tool in daily life, widely used on doors of homes and vehicles, providing security for people's daily lives and travel.

[0003] An existing lock cylinder includes an inner lock cylinder body, an outer lock cylinder body, and a connecting rod fixedly connected to both the inner and outer lock cylinder bodies. The connecting rod is equipped with a dial for unlocking and a connecting shaft connecting the outer lock cylinder body and the dial. One end of the connecting shaft is irregularly fitted with the outer lock cylinder body, so that the rotation of the outer lock cylinder body can drive the connecting shaft to rotate. The other end of the connecting shaft is irregularly fitted with the dial, so that the rotation of the connecting shaft can drive the dial to rotate and thus unlock. To ensure smooth unlocking, the connecting shaft and the dial are in an irregularly fitted plug-in configuration, ensuring that the rotation of the outer lock cylinder body or the connecting shaft can drive the dial to rotate through the connecting shaft.

[0004] In existing lock cylinders, because the connecting shaft and the dial wheel are in an irregular fit, when the outer lock cylinder is violently damaged and the outer lock cylinder is missing, the outer end of the connecting shaft is exposed. At this time, a person who forces a lock to open it can open the door by rotating the connecting shaft. The irregular fit between the connecting shaft and the dial wheel reduces the installation performance of the door lock. Utility Model Content

[0005] The purpose of this invention is to provide a lock cylinder mechanism and a lock that solves the problem of low installation performance of the lock cylinder mechanism under violent damage, improves the difficulty of unlocking the lock cylinder mechanism with anti-riot technology, and thus improves the security performance of the lock cylinder mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lock cylinder mechanism, comprising an outer lock cylinder body and an inner lock cylinder body, wherein the outer lock cylinder body and the inner lock cylinder body are connected by a connecting rod, the connecting rod is provided with an unlocking dial for unlocking, an external transmission component is provided between the connecting rod and the outer lock cylinder body, and an elastic part is provided between the external transmission component and the unlocking dial to give the external transmission component a tendency to slide outward, the unlocking dial is provided with an unlocking groove, the inner end of the external transmission component is provided with an unlocking component, the unlocking component has a first torque transmission surface, the inner wall of 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 component and the unlocking groove form a plug-in connection that restricts relative rotation and allows axial movement, after the key is inserted into the outer lock cylinder body, the unlocking component extends into the unlocking groove and drives the unlocking dial to rotate through the first torque transmission surface and the second torque transmission surface to unlock, after the key is removed from the outer lock cylinder body, the elastic part abuts against the external transmission component outward until the unlocking component disengages from the unlocking groove.

[0007] After adopting the above technical solution, this utility model has the following advantages: The lock cylinder mechanism is configured as an inner lock cylinder and an outer lock cylinder, facilitating unlocking from both the inside and outside. The outer lock cylinder and the inner lock cylinder are connected by a connecting rod, ensuring the overall stability of the lock cylinder mechanism. An unlocking dial is provided on the connecting rod, facilitating the transmission connection between the outer and inner lock cylinders and the unlocking dial, thus facilitating unlocking via the unlocking dial. An external transmission component is provided between the outer lock cylinder and the unlocking dial, ensuring that the outer lock cylinder can drive the unlocking dial to rotate for unlocking. Furthermore, an elastic part is provided between the external transmission component and the unlocking dial, giving the external transmission component a tendency to slide outwards. When the user's key is inserted into the outer lock cylinder, the inner end of the key abuts against the external transmission component, causing the external transmission component to move inwards. During the process, the unlocking component is inserted into the unlocking slot. At this time, turning the key drives the outer lock cylinder to rotate, which in turn drives the external transmission component to rotate. Through the first torque transmission surface and the second torque transmission surface, the unlocking component can drive the unlocking dial to rotate, ensuring that the user can unlock smoothly. After the key is removed from the outer lock cylinder, the external transmission component slides outward under the action of the elastic part, and drives the unlocking component to disengage from the unlocking slot. When the outer lock cylinder is violently damaged, resulting in the outer lock cylinder being missing, the unlocking component disengages from the unlocking slot. Forcibly unlocking personnel can no longer drive the unlocking dial to rotate by directly turning the external transmission component, thus playing a role in preventing violent unlocking. Compared with the existing coupling and dial component that maintain an irregular fit, when the key is not inserted, the external transmission component and the unlocking dial remain in a disengaged state, increasing the technical unlocking difficulty of the lock cylinder mechanism, thereby improving the security performance of the lock cylinder mechanism.

[0008] Furthermore, the inner end of the external transmission component is provided with a receiving groove for accommodating the unlocking component, and a first elastic element is provided in the receiving groove. The unlocking component extends out of the receiving groove and is inserted into the unlocking groove under the abutment of the first elastic element.

[0009] Using the aforementioned technical solution, both the first elastic element and the unlocking element are placed in the receiving groove. When the key is used to unlock the door and the shape of the unlocking element is not aligned with the irregular hole of the unlocking groove, the unlocking element can enter the receiving groove by abutting against the unlocking dial. After the outer transmission block rotates until the irregular shape of the unlocking element and the unlocking groove are aligned, the unlocking element extends out of the receiving groove and into the unlocking groove again under the action of the first elastic element. The setting of the receiving groove and the first elastic element ensures that the unlocking element can drive the unlocking dial to rotate when the user unlocks normally, ensuring the stability of the user's normal unlocking.

[0010] Furthermore, the outer end of the unlocking component is provided with a strip-shaped hole, and the inner end of the external transmission component is provided with a first limiting pin. The first limiting pin extends into the strip-shaped hole, and the unlocking component moves relative to the first limiting pin within the length range of the strip-shaped hole. When the first limiting pin abuts against the hole wall of the strip-shaped hole, it axially limits the unlocking component.

[0011] By adopting the aforementioned technical solution, the first limiting pin is inserted into the strip-shaped hole to limit the unlocking component in the axial direction of the unlocking dial, thereby preventing the unlocking component from disengaging from the receiving groove and affecting the transmission connection between the external transmission component and the unlocking dial. The strip shape allows the unlocking component to move relative to the first limiting pin within the length range of the strip-shaped hole, ensuring that the unlocking component can enter the receiving groove when it abuts the unlocking dial, and also ensuring that the unlocking component can extend into the receiving groove and be inserted into the unlocking groove when it is aligned with the unlocking groove.

[0012] Furthermore, the length of the receiving groove in the axial direction of the outer transmission member is greater than the length of the unlocking member in the axial direction of the outer transmission member.

[0013] By adopting the aforementioned technical solution, by setting the length of the receiving groove in the axial direction of the external transmission component to be greater than the length of the unlocking component in the axial direction of the external transmission component, it is ensured that when the unlocking component and the unlocking groove are not aligned, the unlocking component can enter the receiving groove so that the key can be inserted into the external lock cylinder, thereby improving the stability of the lock cylinder mechanism in unlocking.

[0014] Furthermore, the unlocking component and the external transmission component are coaxially arranged. The outer peripheral wall of the unlocking component is provided with a protrusion that allows the unlocking component and the unlocking groove to be inserted into each other at only one axially corresponding position. The unlocking groove and the unlocking dial are coaxially arranged. The unlocking component is provided with an auxiliary groove that communicates with the unlocking groove. After the unlocking component and the unlocking groove and the protrusion and the auxiliary groove are aligned, the unlocking component is inserted into the unlocking groove.

[0015] When the aforementioned technical solution is adopted, and the unlocking part and the unlocking groove are coaxially set with the external transmission part and the unlocking dial respectively, the unlocking part is inserted into the unlocking groove by the protrusion on the outside of the unlocking part and the auxiliary groove on the unlocking dial. The protrusion makes the cross-section of the unlocking part non-centrally symmetrical, so that the unlocking part can only be inserted into the unlocking groove and drive the unlocking dial to rotate and unlock when both the unlocking part and the protrusion and the auxiliary groove are aligned. This ensures that the unlocking dial is at the same angle every time the key is inserted and removed.

[0016] Furthermore, the elastic part includes a second elastic member, and the outer peripheral wall of the inner end of the external transmission member is provided with a rib. One end of the second elastic member abuts against the rib and the other end abuts against the unlocking dial. The second elastic member is in a compressed state.

[0017] Using the aforementioned technical solution, one end of the second elastic element abuts against the unlocking dial and the other end abuts against the protruding rib, ensuring that when the user unlocks the lock normally with the key, it can drive the external transmission component to press inward against the first elastic element until the unlocking component is inserted into the unlocking groove; when the outer end of the external transmission component lacks abutment, the second elastic element in the compressed state pushes the external transmission component outward, ensuring that after the key is removed, the unlocking component disengages from the unlocking groove, preventing the lock cylinder mechanism from being accidentally opened and improving the security performance of the lock cylinder.

[0018] Furthermore, the external transmission component includes a first transmission part connected to the external lock core and a second transmission part located inside the first transmission part. The cross-sectional shape of the outer end of the first transmission part is non-circular. The outer end of the first transmission part is inserted into the inner end of the external lock core, so that the external lock core can drive the first transmission part to rotate.

[0019] By adopting the aforementioned technical solution, the cross-section of the outer end of the first transmission part is set to be non-circular, so that after the first transmission part is inserted into the outer lock core, the outer lock core can drive the outer transmission component to rotate, thereby driving the unlocking dial to rotate and unlock, ensuring that the outer lock core can drive the outer transmission component to rotate.

[0020] Furthermore, a first limiting member is provided between the outer lock core and the outer end of the outer transmission member, and the first limiting member drives the outer transmission member to rotate when the outer lock core rotates.

[0021] By adopting the aforementioned technical solution, a first elastic element is provided between the outer lock core and the outer end of the outer transmission component to ensure that the outer lock core can drive the outer transmission component to rotate, thereby improving the stability of the transmission of the outer transmission component.

[0022] Furthermore, the outer peripheral wall of the inner end of the external transmission component is provided with a rib, and the connecting rod has a limiting surface facing the unlocking dial. The rib abuts against the limiting surface to prevent the external transmission component from disengaging from the connecting rod.

[0023] By adopting the aforementioned technical solution, when the rib abuts against the limiting surface, it prevents the external transmission component from moving outward and detaching from the connecting rod, thus avoiding the possibility that the external transmission component might slide outward and detach from the connecting rod when the external lock cylinder is in a state of being forcibly damaged and missing. This also avoids the possibility of the unlocking dial being exposed, increasing the difficulty of technical unlocking of the lock cylinder mechanism after being forcibly damaged.

[0024] This utility model also provides a lock, including a lock body and the aforementioned lock cylinder mechanism.

[0025] By adopting the aforementioned technical solution, the lock cylinder mechanism is set on the lock body. When the external transmission component is locked, the unlocking component is disengaged from the unlocking groove. The rotation of the external transmission component cannot drive the unlocking dial to rotate. This avoids the situation where the external lock cylinder is damaged by force and is missing. This prevents violent unlockers from directly driving the unlocking dial to rotate through the external transmission component to unlock the lock, thus increasing the difficulty of unlocking the lock by force. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of a lock cylinder mechanism according to the present invention;

[0028] Figure 2 This is an overall sectional view of the lock cylinder mechanism in this utility model;

[0029] Figure 3 This is an exploded view of the external transmission component and the unlocking dial of this utility model;

[0030] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle;

[0031] Figure 5 This utility model Figure 2 Enlarged view at point B in the middle;

[0032] Figure 6 This is a cross-sectional view of the limiting hole in this utility model;

[0033] Figure 7 This is a cross-sectional view of the third limiting pin in this utility model;

[0034] Figure 8 This is a schematic diagram of the third limiting pin extending out of the receiving hole in this utility model;

[0035] Figure 9 This is a schematic diagram of the limiting hole and the third limiting pin in this utility model;

[0036] Figure 10 This is a schematic diagram of the connecting rod and the outer lock core housing in this utility model. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0038] The terms "first," "second," etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0039] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0040] like Figure 1 As shown, this utility model provides a lock cylinder mechanism, including an outer lock cylinder body 1 and an inner lock cylinder body 2. The outer lock cylinder body 1 and the inner lock cylinder body 2 are connected by a connecting rod 3, and the connecting rod 3 is provided with an unlocking dial 4 for unlocking; specifically, as shown... Figure 1 and Figure 2 As shown, the connecting rod 3 includes an inner connecting part 32 and an outer connecting part 31. An avoidance opening 33 is formed between the inner connecting part 32 and the outer connecting part 31 to avoid the unlocking dial 4. The inner end of the outer connecting part 31 has an insertion groove 11, and the outer end of the unlocking dial 4 has an insertion protrusion 41. The inner end of the unlocking dial 4 passes through the inner connecting part 32, and the outer end is inserted into the insertion groove 11 through the insertion protrusion 41, thereby axially fixing the unlocking dial 4. A cavity 12 is formed between the outer connecting part 31, the unlocking dial 4, and the inner connecting part 32. An external transmission component 5 is provided between the connecting rod 3 and the outer lock core 1, located in the cavity 12. The external transmission component 5 drives the outer lock core 1 and the unlocking dial 4. When the user unlocks normally with a key, the outer lock core 1 drives the external transmission component 5 to drive the unlocking dial 4 to rotate and unlock.

[0041] In this embodiment, as Figure 3 and Figure 4As shown, an elastic part is provided between the external transmission component 5 and the unlocking dial 4, which gives the external transmission component 5 a tendency to slide outward. The unlocking dial 4 is provided with an unlocking groove 42. The inner end of the external transmission component 5 has an unlocking component 52 that is inserted into the unlocking groove 42. The unlocking component 52 has a first torque transmission surface, and the inner wall of the unlocking groove 42 has a second torque transmission surface. The first torque transmission surface and the second torque transmission surface are complementary to each other. The unlocking component 52 and the unlocking groove 42 form an insertion connection that restricts relative rotation and allows axial movement. In specific use, the external transmission component 5 has an unlocked state and a locked state. When the user unlocks normally with the key, after the key is inserted into the outer lock cylinder 1 and inserted into place, the external transmission component 5 is in the unlocked state. At this time, the unlocking component 52 extends into the unlocking groove 42 and drives the unlocking dial 4 to rotate through the mutual abutment of the first torque transmission surface and the second torque transmission surface. The key is used to unlock the lock. When the key is removed from the outer lock cylinder 1, the elastic part abuts against the outer transmission member 5 until the unlocking member 52 disengages from the unlocking groove 42. At this time, the outer transmission member 5 is in a locked state and can no longer drive the unlocking dial 4 to rotate to unlock. By setting the unlocking and locking states of the outer transmission member 5, when the user does not use the key to unlock, the outer transmission member 5 is in a locked state. Compared with the existing coupling and dial member maintaining an irregular fit, the unlocking dial 4 can only be driven to rotate by the outer transmission member 5 under specific circumstances when the key is used. This avoids the situation where the outer lock cylinder 1 is missing due to violent damage, and the dial member can be directly driven to rotate by the coupling. This increases the difficulty of unlocking the outer lock cylinder 1 after it has been violently damaged. When the outer lock cylinder 1 is missing due to violent damage, the unlocking dial 4 cannot be directly driven to rotate by the outer transmission member 5 to unlock, thus improving the safety performance of the lock cylinder mechanism.

[0042] In this embodiment, as Figure 3 and Figure 4 As shown, the unlocking component 52 is coaxially arranged with the external transmission component 5, and the unlocking groove 42 is coaxially arranged with the unlocking dial 4. In order to ensure that the unlocking component 52 can drive the unlocking dial 4 to rotate and unlock after it is inserted into the unlocking groove 42, a protrusion 58 is provided on the outer peripheral wall of the unlocking component 52, and an auxiliary groove 421 communicating with the unlocking groove 42 is provided on the unlocking dial 4. When the unlocking component 52 is inserted into the unlocking groove 42, the protrusion 58 is inserted into the auxiliary groove 421, and the side walls of the protrusion 58 and the auxiliary groove 421 abut against each other to form a torque transmission surface; thereby driving the unlocking dial 4 to rotate and improving the stability of the lock cylinder mechanism for normal unlocking.

[0043] To facilitate the insertion of the unlocking component 52 into the unlocking slot 42, such as Figure 3 and Figure 4As shown, the inner end of the external transmission member 5 is provided with a receiving groove 51 for accommodating the unlocking member 52. Specifically, the receiving groove 51 penetrates the inner end face of the external transmission member 5. A first elastic member 53 is provided in the receiving groove 51. The unlocking member 52 is located between the first elastic member 53 and the unlocking dial 4. The first elastic member 53 abuts the unlocking member 52 toward the unlocking dial 4, so that the inner end of the unlocking member 52 tends to protrude from the inner end face of the external transmission member 5, ensuring that the unlocking member 52 can extend out of the receiving groove 51 and be inserted into the unlocking groove 42.

[0044] In this embodiment, to ensure that the unlocking component 52 can be fully accommodated in the receiving groove 51, and to ensure that the key is inserted into the outer lock cylinder 1 when the unlocking component 52 and the unlocking groove 42 are not aligned, the length of the receiving groove 51 in the axial direction of the outer transmission component 5 is greater than the length of the unlocking component 52 in the axial direction of the outer transmission component 5. Specifically, when there is an angular deviation between the unlocking component 52 and the unlocking groove 42, when the key is inserted into the outer lock cylinder 1 and abuts against the outer transmission component 5 inward, the unlocking component 52 abuts against the unlocking dial 4, so that as the key is inserted, the unlocking component 52 can be fully accommodated in the receiving groove 51. After the key is inserted, the outer lock cylinder 1 is rotated. When the unlocking component 52 and the unlocking groove 42 are aligned again, the unlocking component 52 extends into the unlocking groove 42 under the action of the first elastic member 53 and drives the unlocking dial 4 to rotate and unlock as the outer transmission component 5 rotates, ensuring the normal unlocking of the lock cylinder mechanism and avoiding the unlocking of the lock cylinder mechanism due to the angular deviation between the unlocking component 52 and the unlocking groove 42.

[0045] like Figure 4 As shown, the outer end of the unlocking component 52 is provided with a strip-shaped hole 521, and the inner end of the external transmission component 5 is provided with a first limiting pin 54. The first limiting pin 54 extends into the strip-shaped hole 521. The unlocking component 52 moves relative to the first limiting pin 54 within the length range of the strip-shaped hole 521. When the first limiting pin 54 abuts against the hole wall of the strip-shaped hole 521, it limits the unlocking component 52 in the axial direction of the unlocking dial 4. Specifically, the first limiting pin 54 limits the maximum length of the unlocking component 52 extending out of the inner end face of the external transmission component 5, ensuring that when the external transmission component 5 moves to its outermost end, the unlocking component 52 is disengaged from the unlocking groove 42, thereby ensuring the stability of the locked state of the external transmission component 5. The strip-shaped hole 521 facilitates the limiting of the unlocking component 52 by the first limiting pin 54, and the unlocking component 52 can slide in the length direction of the strip-shaped hole 521, giving the unlocking component 52 greater flexibility and ensuring the stability of the engagement between the unlocking component 52 and the unlocking groove 42.

[0046] In another embodiment, such as Figure 3As shown, the unlocking component 52 is coaxially arranged with the external transmission component 5. The outer peripheral wall of the unlocking component 52 is provided with a protrusion 58 that allows the unlocking component 52 and the unlocking groove 42 to be inserted into each other only in one axial corresponding position. The unlocking groove 42 is coaxially arranged with the unlocking dial 4. The unlocking component 52 is provided with an auxiliary groove 421 that communicates with the unlocking groove 42. The protrusion 58 makes the cross-section of the unlocking component 52 non-centrally symmetrical, so that the unlocking component 52 can only be inserted into the unlocking groove 42 and drive the unlocking dial 4 to rotate and unlock when the unlocking component 52 and the protrusion 58 and the auxiliary groove 421 are both aligned. This ensures that the unlocking dial 4 is at the same angle every time the key is removed. In another embodiment, the protrusion 58 can be disposed on the groove wall of the unlocking groove 42, and correspondingly, the auxiliary groove 421 is disposed on the unlocking member 52. The arrangement of the protrusion 58 and the auxiliary groove 421 ensures that the unlocking member 52 and the unlocking groove 42 can only be inserted at one corresponding position in the axial direction, ensuring that the unlocking dial 4 is at the same angle every time the key is inserted and removed. In addition to the arrangement of the protrusion 58 and the auxiliary groove 421, in other embodiments, the cross-section of the unlocking member 52 can also be set to a non-centrally symmetrical shape, such as a non-equilateral triangle or an irregular quadrilateral shape, etc. The shape of the cross-section of the unlocking groove 42 corresponds to the shape of the cross-section of the unlocking member 52, so that the unlocking member 52 and the unlocking groove 42 can be inserted at only one corresponding angle to realize torque transmission and drive the unlocking dial 4 to rotate.

[0047] To ensure that the external transmission component 5 has a tendency to move outward, such as Figure 3 and Figure 4 As shown, the elastic part includes a second elastic member 43; specifically, the outer peripheral wall of the inner end of the outer transmission member 5 is provided with a rib 55, one end of the second elastic member 43 abuts against the unlocking dial 4 and the other end abuts against the inner ring surface of the rib 55, and the second elastic member 43 is in a compressed state. Through the action of the second elastic member 43, the outer transmission member 5 has a tendency to slide outward, ensuring that when the outer end of the outer transmission member 5 lacks abutment, the outer transmission member 5 drives the unlocking member 52 to slide outward, ensuring the stability of the locked state of the outer transmission member 5.

[0048] To ensure that the outer lock core 1 can drive the outer transmission component 5 to rotate, the outer transmission component 5 includes a first transmission part 501 connected to the outer lock core 1 and a second transmission part 502 located inside the first transmission part 501. The cross-sectional shape of the outer end of the first transmission part 501 is non-circular. The outer end of the first transmission part 501 is inserted into the inner end of the outer lock core 1, so that the outer lock core 1 can drive the first transmission part 501 to drive. Specifically, the cross-sectional shape of the outer end of the first transmission part 501 can be set to be non-circular, such as quadrilateral, semi-circle, etc., through the contact between the first transmission part 501 and the inner end of the outer lock core 1.

[0049] In another embodiment, such as Figure 2As shown, in order to ensure the stability of the transmission between the outer lock core 1 and the outer transmission component 5, a first limiting component 6 is provided between the outer lock core 1 and the outer transmission component 5. The first limiting component 6 drives the outer transmission component 5 to rotate when the outer lock core 1 rotates.

[0050] In addition to serving as the transmission link between the external transmission component 5 and the external lock core 1, the first limiting component 6, such as... Figure 2 and Figure 5 As shown, when the outer lock core 1 is missing due to violent damage, it can also drive the outer transmission component 5 to move outward so that the unlocking component 52 disengages from the unlocking groove 42. Specifically, the first limiting component 6 includes a spring 61 and a second limiting pin 62. The inner end of the outer lock core 1 is provided with a mounting groove 13 extending radially along the outer lock core 1. The spring 61 and the second limiting pin 62 are both provided in the mounting groove 13. In the radial direction of the outer lock core 1, the spring 61 is located outside the second limiting pin 62. The inner end of the outer transmission component 5 is provided with a strip groove 56. The spring 61 is in a compressed state and abuts against the second limiting pin 62, so that the end of the second limiting pin 62 is inserted into the strip groove 56, so that the outer lock core 1 and the outer transmission component 5 form a limit in the circumferential direction, ensuring that the outer lock core 1 can drive the outer transmission component 5 to rotate and unlock. In addition, the strip groove 56 allows the outer transmission member 5 and the second limiting pin 62 to slide in the length direction of the strip groove 56, ensuring that the outer transmission member 5 can slide outward to drive the unlocking member 52 out of the unlocking groove 42, and also ensuring that the outer transmission member 5 can slide inward to drive the unlocking member 52 into the unlocking groove 42 to unlock.

[0051] To ensure the stability of the second limit pin 62, such as Figure 5 As shown, the end of the second limiting pin 62 away from the strip groove 56 has a limiting rib 621, and the inner wall of the mounting groove 13 has a supporting step 131. The limiting rib 621 is supported on the supporting step 131 to stabilize the second limiting pin 62 in the mounting groove 13. Specifically, when the spring 61 pushes the second limiting pin 62 toward the supporting step 131, the position of the second limiting pin 62 is restricted by the contact between the supporting step 131 and the limiting rib 621, so as to prevent the second limiting pin 62 from disengaging from the mounting groove 13 and affecting the stability of the connection between the outer lock core 1 and the outer transmission component 5.

[0052] To improve the anti-theft performance of the lock cylinder mechanism, such as Figure 2 , Figure 6 and Figure 7 As shown, the connecting rod 3 is provided with a limiting hole 34, and the outer transmission component 5 is provided with a third limiting pin 57. The third limiting pin 57 tends to protrude from the outer peripheral wall of the outer transmission component 5. When the outer transmission component 5 moves outward until the third limiting pin 57 is aligned with the limiting hole 34, as shown... Figure 8As shown, the third limiting pin 57 protrudes from the outer peripheral wall of the outer transmission member 5 and extends into the limiting hole 34 to lock the outer transmission member 5. Specifically, the limiting hole 34 is located at the outer end of the connecting rod 3, and there are two limiting holes 34, which are respectively located on both sides of the outer transmission member 5, and the axes of the two limiting holes 34 are on the same straight line. The outer transmission member 5 is provided with a receiving hole 572, and there are also two third limiting pins 57, and the two third limiting pins 57 correspond one-to-one with the two limiting holes 34. A third elastic element 571 is also provided in the receiving hole 572, and the third elastic element 571 is located between the two third limiting pins 57. Furthermore, being in a compressed state, the third limiting pin 57 tends to move away from the external transmission member 5. When the external lock core 1 is damaged and breaks, the external lock core 1 will disengage under the action of the first limiting member 6, causing the external transmission member 5 to slide outward. When the third limiting pin 57 is aligned with the limiting hole 34, under the action of the third elastic member 571, the third limiting pin 57 extends into the limiting hole 34, thereby locking the external transmission member 5 on the connecting rod 3. This prevents the external transmission member 5 from disengaging from the connecting rod 3, causing the unlocking dial 4 to be exposed, and thus prevents violent unlocking personnel from using tools to rotate the unlocking dial 4 to unlock the lock.

[0053] In this embodiment, as Figure 8 and Figure 9 As shown, the outer peripheral wall of the inner end of the external transmission component 5 is provided with a protruding rib 55, and the connecting rod 3 has a limiting surface 311 facing the unlocking dial 4. Specifically, the limiting surface 311 is the inner end face of the outer connecting part 31. During the outward movement of the external transmission component 5, when the protruding rib 55 abuts against the limiting surface 311, the abutment between the limiting surface 311 and the protruding rib 55 prevents the external transmission component 5 from disengaging from the connecting rod 3. When the limiting surface 311 abuts against the protruding rib 55, the third limiting pin 57 is aligned with the limiting hole 34, ensuring that the third limiting pin 57 can extend into the limiting hole 34, thus doubly ensuring the stability of the external transmission component 5 in the connecting rod 3. When the third limiting pin 57 extends into the limiting hole 34, it not only prevents the external transmission component 5 from disengaging from the connecting rod 3, but also restricts the rotation of the external transmission component 5, improving the stability of the external transmission component 5 when the outer lock core 1 is damaged.

[0054] Furthermore, when setting the limiting hole 34 and the third limiting pin 57 to improve the anti-riot safety performance of the lock cylinder mechanism, the breakage position of the connecting rod 3 can also be limited when the external lock cylinder body 1 is subjected to violent damage; specifically, such as Figure 10As shown, the outer lock cylinder 1 has an outer lock cylinder housing 14 integrally formed with the outer connecting part 31. The outer end of the outer connecting part 31 is smaller than the inner end of the outer connecting part 31, so that a stress step 141 is formed between the outer lock cylinder housing 14 and the outer connecting part 31. Specifically, the outer end of the outer connecting part 31 is provided with a stress groove. One side of the groove wall is flush with the inner end face of the outer lock cylinder housing 14 to form a stress step 141. When the outer lock cylinder 1 is violently damaged, the fracture position of the outer lock cylinder housing 14 and the outer connecting part 31 is limited to the stress step 141. This ensures that even when the outer lock cylinder 1 is missing, the outer connecting part 31 still covers the outside of the unlocking wheel, preventing violent unlocking personnel from using technical unlocking tools to rotate the unlocking wheel 4 to unlock after the outer connecting part 31 is missing, thus improving the safety performance of the lock cylinder mechanism. In another embodiment, the outer end of the outer connecting part 31 is provided with an inclined surface. 312. The inclined surface 312 causes the outer end of the outer connecting part 31 to gradually increase in size from the outside to the inside. The inner end face of the outer lock cylinder housing 14 is integrally formed with the outermost end of the outer connecting part 31. Furthermore, a stress step 141 is formed between the outermost end of the inclined surface 312 and the outer lock cylinder housing 14. When the outer lock cylinder 1 is subjected to violent damage, the breakage of the outer lock cylinder housing 14 and the connecting rod 3 occurs at the stress step 141. This ensures that when the outer lock cylinder 1 is missing, the outer connecting part 31 still covers the outside of the unlocking dial 4, preventing violent unlocking personnel from using technical unlocking tools to rotate the unlocking dial 4 and unlock the lock. In addition, the inclined surface 312 makes the outer end of the outer transmission member 5 have a tapered structure, which makes it difficult for the clamping tool to clamp the outer end of the outer connecting part 31 again. This increases the difficulty for violent unlocking personnel to clamp the outer end of the outer connecting part 31 and carry out violent damage again, thereby improving the safety performance of the lock cylinder mechanism.

[0055] This utility model provides a lock, a lock body, and a lock cylinder mechanism as described in the above embodiments. By applying the lock cylinder mechanism as described in the above embodiments to the lock body, the external transmission member 5 is in a locked state, and the unlocking member 52 is disengaged from the unlocking groove 42. This prevents the lock from being forcibly opened by a violent person when the outer lock cylinder 1 is damaged and missing. In this case, the lock can be opened by the external transmission member 5 and the unlocking dial 4, which is not conducive to the lock's resistance to violent opening. When the outer lock cylinder 1 is broken by violence under the action of the second limit pin 62 and the third limit pin 57, the external transmission member 5 blocks the outer end of the connecting rod 3, which can prevent the unlocking dial 4 from being exposed, and further prevent the lock body from being forcibly opened.

[0056] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A lock cylinder mechanism comprising an outer lock cylinder body and an inner lock cylinder body, the outer lock cylinder body and the inner lock cylinder body being connected by a connecting rod, the connecting rod being provided with a lock opening dial for opening the lock, and the connecting rod and the outer lock cylinder body being provided with an outer transmission member, characterized in that, An elastic part is provided between the external transmission component and the unlocking dial, which tends to make the external transmission component slide outward. The unlocking dial is provided with an unlocking groove. The inner end of the external transmission component has an unlocking component. The unlocking component has a first torque transmission surface, and the inner wall of 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 component and the unlocking groove form a plug-in connection that restricts relative rotation and allows axial movement. After the key is inserted into the outer lock core, the unlocking component extends into the unlocking groove and drives the unlocking dial to rotate through the first torque transmission surface and the second torque transmission surface to unlock. After the key is removed from the outer lock core, the elastic part abuts against the external transmission component outward until the unlocking component disengages from the unlocking groove.

2. The lock cylinder mechanism of claim 1, wherein, The inner end of the external transmission component is provided with a receiving groove for accommodating the unlocking component. A first elastic element is provided in the receiving groove. The unlocking component extends out of the receiving groove and is inserted into the unlocking groove under the abutment of the first elastic element.

3. The lock cylinder mechanism of claim 1 or 2, wherein, The outer end of the unlocking component has a strip-shaped hole, and the inner end of the external transmission component has a first limiting pin. The first limiting pin extends into the strip-shaped hole, and the unlocking component moves relative to the first limiting pin within the length range of the strip-shaped hole. When the first limiting pin abuts against the hole wall of the strip-shaped hole, it axially limits the unlocking component.

4. The lock cylinder mechanism of claim 2, wherein, The length of the receiving groove in the axial direction of the external transmission component is greater than the length of the unlocking component in the axial direction of the external transmission component.

5. The lock cylinder mechanism of claim 1, wherein, The unlocking component and the external transmission component are coaxially arranged. The outer peripheral wall of the unlocking component is provided with a protrusion that allows the unlocking component and the unlocking groove to be inserted into each other only in one axial corresponding position. The unlocking groove and the unlocking dial are coaxially arranged. The unlocking component is provided with an auxiliary groove that communicates with the unlocking groove. After the unlocking component and the unlocking groove and the protrusion and the auxiliary groove are aligned, the unlocking component is inserted into the unlocking groove.

6. The lock cylinder mechanism of claim 1, wherein, The elastic part includes a second elastic element. The outer peripheral wall of the inner end of the external transmission element is provided with a rib. One end of the second elastic element abuts against the rib and the other end abuts against the unlocking dial. The second elastic element is in a compressed state.

7. The lock cylinder mechanism of claim 1, wherein, The external transmission component includes a first transmission part connected to the external lock core and a second transmission part located inside the first transmission part. The cross-sectional shape of the outer end of the first transmission part is non-circular. The outer end of the first transmission part is inserted into the inner end of the external lock core, so that the external lock core can drive the first transmission part to rotate.

8. The lock cylinder mechanism of claim 1, wherein, A first limiting member is provided between the outer lock core and the outer end of the outer transmission component. The first limiting member drives the outer transmission component to rotate when the outer lock core rotates.

9. The lock cylinder mechanism of claim 1, wherein, The outer peripheral wall of the inner end of the external transmission component is provided with a rib, and the connecting rod has a limiting surface facing the unlocking dial. The rib abuts against the limiting surface to prevent the external transmission component from disengaging from the connecting rod.

10. A lock characterised in that, It includes a lock body and a lock cylinder mechanism as described in any one of claims 1 to 9.

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