Lock cylinder

Abstract

The utility model discloses a lock cylinder, which belongs to the technical field of locks, solves the problem that a transmission rod cannot be well driven to rotate due to abrasion of a spring, and adopts the technical scheme that the lock cylinder mainly comprises an outer lock cylinder part, an inner lock cylinder part and a lock cylinder shifting wheel, the connecting rod transmission assembly is sleeved with the lock cylinder shifting wheel, the lock cylinder shifting wheel and the connecting rod transmission assembly are limited in the circumferential direction, a transmission piece is arranged on the outer lock cylinder part, an abutting groove is formed in the connecting rod transmission assembly, the transmission piece stretches into the abutting groove and is limited in the circumferential direction of the connecting rod transmission assembly, the transmission piece comprises a transmission rod, one end of the transmission rod is arranged on the outer lock cylinder part, and the other end of the transmission rod is inserted into the abutting groove. The peripheral side surface of the transmission rod is provided with a circumferential groove which enables the transmission rod to be disconnected and cannot perform transmission when violent unlocking occurs, and the position of the circumferential groove in the transmission rod is opposite to the matching surface of the connecting rod transmission assembly and the outer lock cylinder part. The utility model mainly avoids the possibility that the transmission rod is separated from the abutting groove to influence the outer lock cylinder part to drive the connecting rod transmission assembly to rotate so as to unlock.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a lock core. Background Art

[0002] There are many types of locks. The most common lock is usually a pin pin lock. The main structure of a pin pin lock consists of a lock case, a lock body, a lock cylinder, a lock tongue and a pin. The lock case covers the lock body, the lock body covers the lock cylinder, and the lock cylinder can rotate. Movable pins are installed in the corresponding spaces between the lock body and the lock cylinder. When the lock is in use, the pins of the lock body enter the pin holes of the lock cylinder, fixing the lock cylinder and preventing it from rotating, and the lock tongue cannot move. To unlock the lock, insert the key into the keyhole. The teeth on the key will push the pins of the lock cylinder, so that the contact surface between the pins of the lock body and the pins of the lock cylinder coincides with the contact surface between the lock body and the lock cylinder. Therefore, twisting the key can rotate the lock cylinder, and the lock cylinder drives the lock tongue to leave the fixed lock case, and the lock is opened.

[0003] Regarding the lock core part, the prior art CN219012223U discloses an intelligent lock core that is resistant to violent destruction, including a lock shell, an outer lock core part, an inner lock core part and an unlocking dial. The inner lock core part includes a ratchet rotation assembly and a connecting rod transmission assembly. The unlocking dial is sleeved at the end of the connecting rod transmission assembly for linkage cooperation. The connecting rod transmission assembly includes a coupling sleeve and a connecting shaft part. It can be seen from the accompanying drawings of the prior art that a transmission rod is provided between the outer lock core part and the connecting shaft part, and an abutment groove is provided on the outer peripheral wall of the transmission rod. A spring and a steel ball are provided between the outer lock core part and the transmission rod. The spring abuts the steel ball in the abutment groove. When the key is twisted to drive the outer lock core part to rotate, the spring and the steel ball drive the transmission rod to rotate through the abutment groove, thereby driving the connecting shaft part to rotate to drive the unlocking dial to rotate and then unlock.

[0004] However, as the door is constantly opened and closed, the outer lock core in the lock core constantly drives the transfer rod to rotate, and the spring is constantly worn between the transfer rod and the outer lock core, resulting in the torque value between the spring and the steel ball between the outer lock core and the transfer rod being difficult to control. As the spring wears, when the outer lock core rotates, the steel ball easily slips out of the abutment groove, resulting in the transfer rod not being able to be driven to rotate well when the outer lock core is rotated by twisting the key, thereby affecting the unlocking of the lock core. Utility Model Content

[0005] The purpose of the utility model is to provide a lock core to solve the problem that the spring is worn and cannot drive the transmission rod to rotate well, and to avoid the possibility that the transmission rod is separated from the abutment groove and affects the possibility that the outer lock core part drives the connecting rod transmission assembly to rotate to unlock.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lock core, including an outer lock core part, an inner lock core part and a lock core dial wheel, the inner lock core part includes a connecting rod transmission assembly, the lock core dial wheel is sleeved on the connecting rod transmission assembly and is circumferentially limited with the connecting rod transmission assembly, the outer lock core part is provided with a transmission member, the connecting rod transmission assembly is provided with an abutment groove, the transmission member extends into the abutment groove and is circumferentially limited with the connecting rod transmission assembly, the transmission member includes a transmission rod, one end of the transmission rod is provided on the outer lock core part, and the other end is inserted into the abutment groove, the outer peripheral side surface of the transmission rod is provided with a circumferential groove that causes the transmission rod to be disconnected and unable to transmit when encountering violent unlocking, and the circumferential groove is opposite to the matching surface of the connecting rod transmission assembly and the outer lock core part at the position of the transmission rod.

[0007] After adopting the above technical scheme, the utility model has the following advantages: when the lock core is installed on the door panel, the inner lock core part is installed on the inner side of the door panel, and the outer lock core part is installed on the outer side of the door panel. When unlocking, the key is inserted into the outer lock core part, and the key is twisted to drive the outer lock core part to rotate. The transmission rod rotates with the rotation of the outer lock core, and the transmission rod drives the connecting rod transmission assembly to rotate through one end inserted in the abutment groove, thereby driving the lock core dial wheel sleeved on the connecting rod transmission assembly to rotate, thereby realizing unlocking. Compared with the prior art CN219012223U in which the steel ball is abutted in the abutment groove by a spring, the outer lock core part is When the core drives the connecting rod transmission assembly to rotate through the transmission rod, the transmission rod has less wear on the transmission rod when repeatedly unlocked compared to the steel ball and the spring, and the transmission rod with greater strength is less likely to slide out of the abutment groove, and the transmission rod is not easily damaged as the lock core is used for a longer time, so that the outer lock core can drive the lock core dial wheel to rotate to unlock during the long time the lock core is used, reducing the possibility that the outer lock core cannot drive the connecting rod transmission assembly and the lock core dial wheel to rotate due to spring wear and other reasons, and avoiding the possibility that the transmission rod exits the abutment groove and affects the unlocking, thereby improving the stability of the lock core unlocking. A circumferential groove is set on the transmission rod. When violent unlocking occurs, due to the weak shear resistance of the transmission rod at the circumferential groove, the transmission rod breaks from the circumferential groove under violence. When the key is turned to drive the outer lock core to rotate, due to the broken transmission rod, the outer lock core can no longer drive the connecting rod transmission assembly to rotate, thereby preventing the door lock from being violently opened.

[0008] Further, the circumferential groove is located on one side of the axis of the transmission rod; or, there are two circumferential grooves distributed relative to the axis of the transmission rod; or, the circumferential groove extends along the circumference of the transmission rod to form an annular groove.

[0009] By adopting the above-mentioned technical scheme, the circumferential groove is set on one side of the axis of the transmission rod. When the lock is violently unlocked, when the transmission rod is about to drive the connecting rod transmission assembly to rotate, the transmission rod breaks at the circumferential groove, effectively preventing the transmission rod from violently driving the connecting rod rotation assembly to rotate and unlock; or two circumferential grooves are distributed relative to the axis of the transmission rod, so that the shear resistance of the transmission rod at the circumferential groove is weaker than that of the rest of the parts, further avoiding the possibility of violent unlocking of the lock core; or the circumferential groove is extended into an annular groove in the circumference of the transmission rod to prevent the transmission rod from self-rotating between the outer lock core and the connecting rod transmission assembly, so that the circumferential groove deviates from the direction of the shear force applied to the transmission rod during violent unlocking, thereby ensuring the functional reliability of violent unlocking.

[0010] Furthermore, a round head portion is provided on one end of the transmission rod facing the connecting rod transmission assembly, and the round head portion is inserted into the abutment groove and abuts against the groove wall of the abutment groove; and / or, two abutment grooves and the transmission rod are symmetrically arranged along the axial direction of the connecting rod transmission assembly, the two transmission rods correspond to the two abutment grooves one by one, and the transmission rod is inserted into the abutment groove on the same side.

[0011] By adopting the above-mentioned technical scheme, after the transmission rod is extended into the abutment groove, the round head part on the transmission rod fits with the groove wall of the abutment groove, thereby increasing the contact area between the transmission rod and the abutment groove and reducing the possibility of the transmission rod detaching from the abutment groove, thereby improving the stability of the connection between the transmission rod and the abutment groove, and improving the stability of the rotation of the connecting rod transmission assembly driven by the outer lock core; two abutment grooves and the transmission rod are symmetrically arranged along the circumference of the connecting rod transmission assembly, so that when the outer lock core drives the connecting rod transmission assembly to rotate, the extrusion force on both sides of the connecting rod transmission assembly is balanced, thereby avoiding the possibility of damage to the connecting rod transmission assembly due to unbalanced force when the outer lock core drives the connecting rod transmission assembly to rotate.

[0012] Furthermore, the connecting rod transmission assembly includes a connecting sleeve, a connecting rod and a linkage rod, the abutment groove is located on the outer peripheral wall of the linkage rod, the connecting rod is coaxially arranged at one end of the linkage rod away from the outer lock core portion, the connecting sleeve is rotatably arranged on the outer peripheral wall of the connecting rod, a one-way limiting assembly is provided between the connecting sleeve and the connecting rod so that the connecting rod drives the connecting sleeve to rotate in one direction, and the lock core dial wheel is arranged on the outer peripheral wall of the connecting sleeve.

[0013] When the locking cam is in the unlocking direction, the locking cam and the lock core dial wheel are in a state of rotation, and the locking cam and the lock core dial wheel are in a state of rotation ...

[0014] Furthermore, a cavity is provided on the connecting rod, and one end of the linkage rod away from the outer lock core portion extends into the cavity. A positioning hole is provided on the inner wall of the cavity, and a positioning piece is provided on the linkage rod. The positioning piece extends into the positioning hole, and the positioning piece drives the connecting rod to rotate with the linkage rod.

[0015] By adopting the above technical solution, when the linkage rod rotates, the locating piece inserted in the locating hole drives the connecting rod to rotate, thereby avoiding the possibility that the linkage rod rotates forward to unlock while the connecting rod does not rotate with the linkage rod, thus affecting the unlocking.

[0016] Furthermore, the inner lock core portion also includes a ratchet and a mounting seat, the mounting seat is arranged on the outer peripheral wall of the connecting sleeve, the mounting seat is provided with a receiving groove, the ratchet is arranged on the connecting rod and is located in the receiving groove, the one-way limit assembly is arranged on the mounting seat and extends into the receiving groove, when the ratchet rotates forward, the mounting seat is driven to rotate through the one-way limit assembly, and when the ratchet rotates reversely, the one-way limit assembly exits the receiving groove without driving the mounting seat to rotate.

[0017] When the above-mentioned technical solution is adopted, when the linkage rod drives the connecting rod to rotate, the connecting rod drives the ratchet to rotate, the ratchet drives the mounting seat to rotate in the accommodating groove, and the mounting seat then drives the connecting sleeve to rotate. When the ratchet rotates forward with the connecting rod, it drives the mounting seat and the connecting sleeve to rotate through the one-way limit assembly, and then drives the lock cylinder dial wheel to rotate to unlock the lock. When the connecting rod drives the ratchet to rotate in the opposite direction, the ratchet pushes the one-way limit component to exit the accommodating groove without driving the mounting seat to rotate, thereby reducing the rotation frequency of the mounting seat, the connecting sleeve and the lock cylinder dial wheel, thereby affecting the service life of the lock cylinder.

[0018] Furthermore, the one-way limit assembly includes a limit member and a telescopic member, a mounting blind hole is provided on the groove wall of the accommodating groove, the telescopic member is arranged in the mounting blind hole, the limit member is slidably arranged in the mounting blind hole and is connected to the telescopic member, when the ratchet rotates forward, it drives the mounting seat to rotate under the obstruction of the limit member, and when the ratchet rotates reversely, the ratchet pushes the limit member into the mounting blind hole without driving the mounting seat to rotate.

[0019] By adopting the above-mentioned technical solution, the telescopic part is arranged in the installation blind hole, and the limit part slides in the installation blind hole under the push of the telescopic part or the ratchet; when the ratchet rotates in the opposite direction, the ratchet pushes the limit part into the installation blind hole; when the ratchet rotates, it does not drive the mounting seat and the coupling sleeve to rotate, thereby not driving the lock cylinder dial wheel to rotate; when the ratchet rotates forward, the ratchet abuts against the limit part along the circumference of the coupling rod, thereby driving the mounting seat to rotate, and further driving the coupling sleeve and the lock cylinder dial wheel to rotate to unlock the lock; by pushing or abutting the limit part with the ratchet, the ratchet can only drive the mounting seat to rotate in one direction, thereby reducing the possibility that the mounting seat, the coupling sleeve and the lock cylinder dial wheel will be affected by more frequent rotation.

[0020] Furthermore, the mounting seat is provided with a first anti-rotation surface, and the outer peripheral wall of the coupling sleeve is provided with a second anti-rotation surface. When the mounting seat is arranged on the coupling sleeve, the first anti-rotation surface is in contact with the second anti-rotation surface.

[0021] By adopting the above-mentioned technical solution, when the mounting seat is connected to the coupling sleeve, the first anti-rotation surface and the second anti-rotation surface are in contact with each other, and the mounting seat can drive the coupling sleeve to rotate by anti-rotation of the first anti-rotation surface and the second anti-rotation surface.

[0022] Furthermore, a driving mechanism is provided on the inner lock core, and the driving mechanism includes a driving source and a transmission component provided on the inner lock core. One side of the transmission component is connected to the driving source, and the other side extends to the coupling sleeve and abuts the mounting seat. Driven by the driving source, the transmission component pushes the mounting seat to slide axially along the coupling sleeve so that the mounting seat cooperates with the ratchet for transmission.

[0023] By adopting the above-mentioned technical solution, when the user does not want to use the key to unlock the door, the driving source can be started to drive the transmission component to move, so that one side of the transmission component abuts against the mounting seat. After the mounting seat is abutted, it slides along the connecting sleeve and cooperates with the ratchet to put the mounting seat and the ratchet in an engaged state for transmission, so that the user can manually unlock the door by manually operating the mounting seat and the ratchet after the mounting seat and the ratchet are in an engaged state without using the key.

[0024] Furthermore, the transmission assembly includes a transmission block and a transmission rod, the transmission block is arranged at the output end of the driving source and is driven to rotate by the driving source, the transmission rod is hinged to the inner lock core and one end of the transmission rod abuts against the transmission block and the other end abuts against the mounting seat, the transmission block drives the transmission rod to rotate to push the mounting seat to slide along the axial direction of the coupling sleeve and cooperate with the ratchet. In the process of using the driving source to drive the transmission assembly to make the mounting seat and the ratchet clutch, it is only necessary to start the driving source to drive the transmission assembly to push the mounting seat, and the sliding distance required for the mounting seat to engage with the ratchet is small, the driving source energy consumed is small, and the driving source with a smaller battery life can also be used for a longer time, thereby reducing the space occupied by the driving source and further reducing the overall volume of the inner lock core.

[0025] When adopting the above-mentioned technical solution, when the transmission component is needed to push the mounting seat to slide axially along the coupling sleeve, the driving source is started, the driving source drives the transmission block to rotate, the transmission block drives the transmission rod to rotate, and pushes the mounting seat, so that the mounting seat slides axially on the coupling sleeve, so that the mounting seat and the ratchet are in an engaged state after sliding in the circumferential direction of the coupling sleeve, which is convenient for the user to manually unlock the door without using a key. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1It is an overall schematic diagram of a lock core of the utility model;

[0028] Figure 2 It is an exploded schematic diagram of the transmission part in the utility model;

[0029] Figure 3-1 It is a cross-sectional view of the circumferential groove in the utility model located on one side of the axis of the transmission rod;

[0030] Figure 3-2 It is a cross-sectional view of the distribution of two axial grooves relative to the axis of the transmission rod in the utility model;

[0031] Figure 4 For this utility model Figure 2 A in the enlarged view;

[0032] Figure 5 It is a cross-sectional view of the connecting rod transmission assembly in the utility model;

[0033] Figure 6 For this utility model Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 This is a schematic diagram of the installation of the one-way limit assembly in the utility model;

[0035] Figure 8 It is a schematic diagram of the installation of the mounting seat and the coupling sleeve in the utility model;

[0036] Fig. 9 This is a schematic diagram of the installation of the driving mechanism in the utility model;

[0037] Fig.10 It is a schematic diagram of the installation of the circumferential limit assembly in the utility model. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0039] The terms "first", "second", etc. (if any) in the specification and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily mean that it has "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present utility model, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0040] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0041] like Figure 1 and Figure 2 As shown, the utility model provides a lock core, including an outer lock core part 1, an inner lock core part 2 and a lock core dial wheel 3. The inner lock core part 2 includes a connecting rod transmission assembly 21. The lock core dial wheel 3 is sleeved on the connecting rod transmission assembly 21 and is circumferentially limitedly connected with the connecting rod transmission assembly 21, so that when the connecting rod transmission assembly 21 rotates, the lock core dial wheel 3 is driven to rotate. The outer lock core part 1 and the connecting rod transmission assembly 21 are circumferentially limitedly connected through a transmission member 4. When a key is inserted into the outer lock core part 1 and the key is twisted to drive the outer lock core part 1 to rotate, the transmission member 4 drives the connecting rod transmission assembly 21 to rotate, so that the lock core dial wheel 3 is rotated to unlock the lock.

[0042] In this embodiment, if Figures 2 to 4 As shown, the transmission member 4 includes a transmission rod 41, and a contact groove 212 is provided on the connecting rod transmission assembly 21. Figure 5 and Figure 6As shown, one end of the transmission rod 41 is arranged on the outer lock core 1, and the other end is inserted into the abutment groove 212 to form a circumferential limit with the connecting rod transmission assembly 21. When unlocking is required, the key is inserted into the outer lock core 1, and the key is twisted to drive the outer lock core 1 to rotate. At this time, the transmission rod 41 drives the connecting rod transmission assembly 21 to rotate by inserting into the abutment groove 212, and then drives the lock core dial wheel 3 to rotate to unlock. Compared with the spring and steel ball in the prior art CN219012223U, the transmission rod 41 is not easy to withdraw from the abutment groove 212 due to wear during the use of the lock core, so that the outer lock core 1 cannot drive the connecting rod transmission assembly 21 to rotate well. The torsion value of the transmission rod 41 is easier to control than the spring and the steel ball, so as to prevent the transmission rod 41 from escaping from the abutment groove 212 during the process of driving the connecting rod transmission assembly 21 to rotate, thereby affecting the unlocking of the lock core.

[0043] In order to avoid the situation that the connecting rod transmission assembly 21 is subjected to unbalanced force during the rotation process, Figure 4 As shown, there are two abutment grooves 212 and transmission rods 41 symmetrically arranged along the axial direction of the connecting rod transmission assembly 21, the two abutment grooves 212 correspond to the two transmission rods 41 one by one, and the transmission rod 41 is inserted into the abutment groove 212 on the same side, when the outer lock core part 1 rotates, the transmission rods 41 on both sides abut on the groove wall of the abutment groove 212 at the same time to drive the connecting rod transmission assembly 21 to rotate, and the transmission rods 41 on both sides abut the connecting rod transmission assembly 21 to the axial position of the outer lock core part 1, thereby avoiding the connecting rod transmission assembly 21 from being damaged due to unbalanced force on the connecting rod transmission assembly 21 in the radial direction of the outer lock core part 1.

[0044] In order to improve the stability of the connection between the transmission rod 41 and the connecting rod transmission assembly 21, as shown in FIG. Figure 4 As shown, a round head portion 42 is provided on one end of the transmission rod 41 close to the connecting rod transmission assembly 21. After the transmission rod 41 and the connecting rod transmission assembly 21 are installed, the round head portion 42 is inserted into the abutment groove 212 and the round head portion 42 fits with the groove wall of the abutment groove 212. By fitting the round head portion 42 with the groove wall of the abutment groove 212, the contact area between the transmission rod 41 and the abutment groove 212 is increased, and the possibility of the round head portion 42 slipping out of the abutment groove 212 is reduced, thereby improving the stability of the connection between the transmission rod 41 and the connecting rod transmission assembly 21.

[0045] In this embodiment, in order to avoid violent unlocking, Figure 3-1 , Figure 3-2 and Figure 4 As shown, the outer peripheral side of the transmission rod 41 is provided with a circumferential groove 43 which makes the transmission rod 41 disconnected and unable to transmit when encountering violent unlocking. The circumferential groove 43 is located at the position of the transmission rod 41 and is opposite to the matching surface of the connecting rod transmission assembly 21 and the outer lock core part 1. Specifically, as shown in FIG. Figure 3-1 As shown, the circumferential groove 43 is located on one side of the axis of the transmission rod 41; or, as shown Figure 3-2As shown, there are two circumferential grooves 43 distributed relative to the axis of the transmission rod 41, so that when the transmission rod 41 is subjected to a large shear force due to violent unlocking, the circumferential grooves 43 are broken due to the small shear resistance, and the outer lock core part 1 cannot drive the connecting rod transmission assembly 21 through the transmission rod 41, thereby avoiding violent unlocking. In order to prevent the circumferential grooves 41 from deviating from the direction of the shear force when the transmission rod 41 rotates, the end of the transmission rod 41 away from the connecting rod transmission assembly 21 is set in a square shape, so that the outer lock core part 1 and the transmission rod 41 are circumferentially limited, and the transmission rod 41 is prevented from rotating between the connecting rod transmission assembly 21 and the outer lock core part 1, ensuring that the circumferential grooves 43 are subjected to the shear force and can be broken in time when facing violent unlocking. Since the circumferential grooves 43 are on one side of the axis of the transmission rod 41 or distributed on both sides of the axis of the transmission rod 41, when the transmission rod 41 is installed on the connecting rod transmission assembly 21 and the outer lock core part 1. The circumferential groove 43 extends along the axial direction of the transmission rod 41 to the round head 42. Since the strength of the circumferential groove 43 of the transmission rod 41 is lower than that of other places, when violent unlocking occurs, the transmission rod 41 breaks into two parts from the circumferential groove 43, one part remains in the abutment groove 212, and the other part rotates with the outer lock core part 1, so that the outer lock core part 1 cannot drive the connecting rod transmission assembly 21 to rotate, reducing the possibility of the lock core being unlocked under violent operation. Or, Figure 4 As shown, the circumferential groove 43 extends along the circumference of the transmission rod 41 to form an annular groove; with the circumferential groove 43 forming an annular groove, there is no need to worry about the transmission rod 1 rotating between the connecting rod transmission assembly 21 and the outer lock core 1, causing the circumferential groove 43 to deviate from the direction of the shear force exerted on the transmission rod 41 during the rotation of the connecting rod rotating assembly 21, thereby ensuring the functional reliability of anti-violent unlocking.

[0046] In this embodiment, if Figure 2 and Figure 6As shown, the connecting rod transmission assembly 21 includes a connecting sleeve 214, a connecting rod 213 and a linkage rod 215, the abutment groove 212 is located on one end of the linkage rod 215 extending into the outer lock core part 1, and the connecting rod 213 is coaxially arranged on the linkage rod 215; specifically, the connecting rod 213 is provided with a cavity 216 and a positioning hole 217, the positioning hole 217 is located on the inner wall of the cavity 216 and penetrates the inner wall of the cavity 216 and the outer peripheral wall of the connecting rod 213 in the radial direction of the connecting rod 213, and the linkage rod 215 is provided with a positioning member 24, and the positioning member 24 extends into the positioning hole 217, so that the linkage rod 215 and the connecting rod 213 are circumferentially upper-limited, so that the linkage rod 215 can drive the connecting rod 213 to rotate. The coupling sleeve 214 is sleeved on the outer peripheral wall of the linkage rod 215 and is rotatably connected to the inner lock core part 2. The lock core dial wheel 3 is arranged on the outer peripheral wall of the coupling sleeve 214. A one-way limit assembly 5 is provided between the coupling sleeve 214 and the coupling rod 213. Under the action of the one-way limit assembly 5, the coupling rod 213 only drives the coupling sleeve 214 to rotate forward to unlock. When the coupling rod 213 rotates reversely, the coupling sleeve 214 and the lock core dial wheel 3 do not rotate with the coupling rod 213.

[0047] In order to improve the stability between the linkage rod 215 and the outer lock core part 1, a limit plate 218 is provided on one end of the linkage rod 215 extending into the outer lock core part 1. The limit plate 218 is clamped on the outer lock core part 1 along the axial direction of the linkage rod 215, thereby reducing the sliding of the linkage rod 215 along the direction of the outer lock core part 1 toward the inner lock core part 2, so that the transmission rod 41 is subjected to shear force, thereby causing the transmission rod 41 to be damaged; and it can also prevent the linkage rod 215 from detaching from the outer lock core part 1, thereby improving the stability between the linkage rod 215 and the outer lock core part 1.

[0048] like Figure 7 As shown, the inner lock core part 2 also includes a ratchet 23 and a mounting seat 22. The mounting seat 22 is arranged on the outer peripheral wall of the coupling sleeve 214. A receiving groove 223 is provided on the mounting seat 22. The ratchet 23 is arranged on the coupling rod 213 and is located in the receiving groove 223. The one-way limit assembly 5 is arranged on the mounting seat 22 and extends radially along the mounting seat 22 to the receiving groove 223. When the coupling rod 213 rotates forward to drive the coupling sleeve 214 and the lock core dial wheel 3 to rotate, the ratchet 23 abuts against the one-way limit assembly 5 to drive the mounting seat 22 to rotate.

[0049] Specifically, Figure 5 and Figure 7As shown, the one-way limit assembly 5 includes a limit member 51 and a telescopic member 52. A mounting blind hole 224 is provided on the groove wall of the accommodating groove 223. The telescopic member 52 is arranged in the mounting blind hole 224. The limit member 51 is slidably arranged in the mounting blind hole 224 and connected with the telescopic member 52. The limit member 51 extends into the accommodating groove 223. When the ratchet 23 rotates forward, the gear teeth of the ratchet 23 hook and abut the limit member 51, so that the ratchet 23 drives the mounting seat 22 to rotate, thereby driving the coupling sleeve 214 and the lock cylinder dial wheel 3 to rotate. The back side of the teeth of the ratchet 23 is an inclined surface 231. When the coupling rod 213 drives the ratchet 23 to rotate in the opposite direction, the teeth of the ratchet 23 push the limiting member 51 under the action of the inclined surface 231, so that the limiting member 51 compresses the telescopic member 52 and then slides into the mounting blind hole 224, so that the mounting seat 22 does not rotate with the ratchet 23. When the mounting seat 22 does not rotate, the coupling sleeve 214 and the lock cylinder dial wheel 3 do not rotate, thereby avoiding the possibility of accidental rotation of the lock cylinder dial wheel 3 and affecting the service life of the lock cylinder.

[0050] In order to improve the stability of the mounting seat 22 driving the shaft sleeve 214 to rotate, as Figure 8 As shown, a first anti-rotation surface 221 is provided on the mounting seat 22, and a second anti-rotation surface 222 is provided on the outer peripheral wall of the coupling sleeve 214. After the mounting seat 22 is sleeved on the coupling sleeve 214, the first anti-rotation surface 221 fits in contact with the second anti-rotation surface 222. When the mounting seat 22 rotates, the coupling sleeve 214 and the lock cylinder dial wheel 3 are driven to rotate through the fit between the first anti-rotation surface 221 and the second anti-rotation surface 222, thereby improving the stability of the mounting seat 22 driving the coupling sleeve 214 to rotate.

[0051] In order to facilitate users to unlock, Fig. 9 and Fig.10As shown, a driving mechanism 6 is provided on the inner lock core 2, and the driving mechanism 6 includes a driving source 61 and a transmission component 62. The driving source 61 is provided on the inner lock core 2, one side of the transmission component 62 is connected to the driving source 61, and the other side extends to the coupling sleeve 214 and abuts the mounting seat 22. Specifically, the transmission assembly 62 includes a transmission block 621 and a transmission rod 622. The transmission block 621 is arranged at the output end of the driving source 61 and is driven to rotate by the driving source 61. A notch 623 is arranged on the transmission block 621. The transmission rod 622 is located between the transmission block 621 and the coupling sleeve 214 and is hinged to the inner lock core 2. One end of the transmission rod 622 extends into the notch 623, and the other end extends to the coupling sleeve 214 and abuts against the mounting seat 22. A circumferential limit assembly 7 is arranged on the mounting seat 22. When the user does not use the key and needs to unlock the lock, the driving source 61 is started, and the driving source 61 drives the transmission block 621 to rotate, so that the transmission rod 622 contacts the groove wall of the notch 623 and rotates along with the transmission block 62. 1, the continuous rotation pushes the transfer rod 622, so that the end of the transfer rod 622 away from the transmission block 621 pushes the mounting seat 22, so that the mounting seat 22 slides along the axial direction of the coupling sleeve 214 and completely engages the ratchet 23. After the mounting seat 22 and the ratchet 23 are completely engaged, the circumferential limit assembly 7 is inserted between the gear teeth of the ratchet 23 so that the mounting seat 22 and the ratchet 23 cooperate and are in an engaged state. In this state, the user twists the outer lock core part 1, and the outer lock core part 1 drives the connecting rod and the ratchet 23 to rotate, drives the mounting seat 22 and the coupling sleeve 214 to rotate, and then drives the lock core dial wheel 3 to rotate. When unlocking is not required, the driving source 61 drives the transmission block 621 to rotate in the reverse direction, and drives the transfer rod 622 to reset.

[0052] In another embodiment, the transfer rod 622 is hinged to the inner lock core 2, one end of the transfer rod 622 abuts against the transmission block 621, and the other end abuts against the mounting seat 22. A torsion spring is provided between the transfer rod 622 and the inner lock core 2 to assist in resetting the transfer rod 622. After the transmission block 621 rotates driven by the driving source 61, it pushes the mounting seat 22, so that the mounting seat 22 and the ratchet 23 are in a engaged state, which is convenient for the user to unlock the door without using a key. After unlocking, the driving source 61 drives the transmission block 621 to reset, and the transfer rod 622 is reset driven by the torsion spring.

[0053] like Fig. 9 As shown, in order to avoid the possibility of the transfer rod 622 being separated from the mounting seat 22, a fork 624 is provided at one end of the transfer rod 622 abutting against the mounting seat 22. The fork 624 is U-shaped. The fork 624 is half wrapped around the coupling sleeve 214 but does not contact the outer peripheral surface of the coupling sleeve 214. The end of the transfer rod 622 abutting against the mounting seat 22 is set to be a U-shaped fork 624, which increases the contact area between the transfer rod 622 and the mounting seat 22 and avoids the transfer rod 622 from being separated from the mounting seat 22, thereby improving the functional reliability of the transfer rod 622 pushing the mounting seat 22 to slide.

[0054] like Fig. 9 As shown, a control panel 63 is also provided on the inner lock core 2. The control panel 63 is electrically connected to the drive source 61. The control panel 63 has a Bluetooth connection function or other communication functions. The user communicates with the control panel 63 through a mobile phone or other electronic device to transmit a control signal. When the user needs to unlock the door without using a key, the user can operate on the mobile phone or other electronic device connected to the control panel 63 to start the drive source 61 so that the mounting seat 22 and the ratchet 23 are in an engaged state. The user then twists the outer lock core 1 to unlock the door.

[0055] In this embodiment, if Fig.10 As shown, the circumferential limit assembly 7 includes a limit rod 71 and an elastic member 72. The mounting seat 22 is provided with a placement groove 73 extending axially along the connecting sleeve 214. The elastic member 72 is arranged on the mounting seat 22 and is located in the placement groove 73. The limit rod 71 is slidably arranged in the placement groove 73 and is connected to the elastic member 72. When the mounting seat 22 does not slide, the limit rod 71 is not plugged into the ratchet 23. After the transmission rod 622 pushes the mounting seat 22 to slide, the limit rod 71 extends between the gear teeth of the ratchet 23 so that the ratchet 23 and the mounting seat 22 are circumferentially limited, so that the mounting seat 22 and the ratchet 23 can rotate synchronously in both forward and reverse directions, thereby realizing the clutch of the mounting seat 22 and the ratchet 23, which is convenient for the user to manually unlock the door without using a key in the future.

[0056] like Fig. 9 and Fig.10 As shown, an elastic reset member 8 is provided on the inner lock core 2, one end of the elastic reset member 8 is provided on the inner lock core 2, and the other end is provided on the mounting seat 22. When the driving source 61 drives the transmission block 621 to rotate in the opposite direction to make the transfer rod 622 disengage from the mounting seat 22, the elastic reset member 8 abuts against the mounting seat 22, so that the mounting seat 22 is reset, thereby preventing the mounting seat 22 from being continuously in a combined state with the ratchet 23, which may reduce the safety of the door lock.

[0057] In this embodiment, the driving source 61 drives the transmission block 621 to rotate, so that the transmission block 621 pushes the transfer rod 622, so that in the process of the transfer rod 622 pushing the mounting seat 22 to slide and engage with the ratchet 23, the required force is smaller and the sliding distance of the mounting seat 22 is smaller, so the energy consumed by the driving source 61 in the driving process is also smaller. Therefore, when setting the driving source 61, a driving source 61 with smaller energy storage can be used, so that the volume of the driving source 61 used is smaller, and the smaller volume of the driving source 61 occupies less space in the inner lock core 2, further reducing the volume of the inner lock core 2.

[0058] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A lock core, comprising an outer lock core part, an inner lock core part and a lock core dial wheel, wherein the inner lock core part comprises a connecting rod transmission assembly, the lock core dial wheel is sleeved on the connecting rod transmission assembly and is circumferentially limited with the connecting rod transmission assembly, the outer lock core part is provided with a transmission member, the connecting rod transmission assembly is provided with an abutment groove, the transmission member extends into the abutment groove and is circumferentially limited with the connecting rod transmission assembly, characterized in that: The transmission member includes a transmission rod, one end of which is arranged on the outer lock core part, and the other end is inserted into the abutment groove. The outer peripheral side surface of the transmission rod is provided with a circumferential groove which causes the transmission rod to be disconnected and unable to transmit when encountering violent unlocking. The position of the circumferential groove on the transmission rod is opposite to the mating surface of the connecting rod transmission assembly and the outer lock core part.

2. The lock core according to claim 1, characterized in that: The circumferential groove is located on one side of the axis of the transmission rod; or, there are two circumferential grooves distributed relative to the axis of the transmission rod; or, the circumferential groove extends along the circumference of the transmission rod to form an annular groove.

3. The lock core according to claim 1, characterized in that: A round head is provided on one end of the transmission rod facing the connecting rod transmission assembly, and the round head is inserted into the abutment groove and abuts against the groove wall of the abutment groove; and / or, two abutment grooves and the transmission rod are symmetrically arranged along the axial direction of the connecting rod transmission assembly, the two transmission rods correspond to the two abutment grooves one by one, and the transmission rod is inserted into the abutment groove on the same side.

4. The lock core according to claim 1, characterized in that: The connecting rod transmission assembly includes a connecting sleeve, a connecting rod and a linkage rod, the abutment groove is located on the outer peripheral wall of the linkage rod, the connecting rod is coaxially arranged at one end of the linkage rod away from the outer lock core part, the connecting sleeve is rotatably arranged on the outer peripheral wall of the connecting rod, a one-way limiting assembly is arranged between the connecting sleeve and the connecting rod so that the connecting rod drives the connecting sleeve to rotate in one direction, and the lock core dial wheel is arranged on the outer peripheral wall of the connecting sleeve.

5. The lock core according to claim 4, characterized in that: The connecting rod is provided with a cavity, and one end of the linkage rod away from the outer lock core part extends into the cavity. A positioning hole is provided on the inner wall of the cavity, and a positioning piece is provided on the linkage rod. The positioning piece extends into the positioning hole, and the positioning piece drives the connecting rod to rotate with the linkage rod.

6. The lock core according to claim 4, characterized in that: The inner lock core also includes a ratchet and a mounting seat, the mounting seat is arranged on the outer peripheral wall of the coupling sleeve, the mounting seat is provided with a receiving groove, the ratchet is arranged on the coupling rod and is located in the receiving groove, the one-way limit assembly is arranged on the mounting seat and extends into the receiving groove, when the ratchet rotates forward, the mounting seat is driven to rotate through the one-way limit assembly, and when the ratchet rotates reversely, the one-way limit assembly withdraws from the receiving groove without driving the mounting seat to rotate.

7. The lock core according to claim 6, characterized in that: The one-way limit assembly includes a limit piece and a telescopic piece. A mounting blind hole is provided on the groove wall of the accommodating groove. The telescopic piece is arranged in the mounting blind hole. The limit piece is slidably arranged in the mounting blind hole and is connected to the telescopic piece. When the ratchet rotates forward, the mounting seat is driven to rotate under the obstruction of the limit piece. When the ratchet rotates reversely, the ratchet pushes the limit piece into the mounting blind hole without driving the mounting seat to rotate.

8. The lock core according to claim 6, characterized in that: The mounting seat is provided with a first anti-rotation surface, and the outer peripheral wall of the coupling sleeve is provided with a second anti-rotation surface. When the mounting seat is arranged on the coupling sleeve, the first anti-rotation surface is in contact with the second anti-rotation surface.

9. The lock core according to claim 1, characterized in that: A driving mechanism is provided on the inner lock core, and the driving mechanism includes a driving source and a transmission component provided on the inner lock core. One side of the transmission component is connected to the driving source, and the other side extends to the coupling sleeve and abuts the mounting seat. Driven by the driving source, the transmission component pushes the mounting seat to slide axially along the coupling sleeve so that the mounting seat cooperates with the ratchet for transmission.

10. The lock core according to claim 9, characterized in that: The transmission assembly includes a transmission block and a transmission rod. The transmission block is arranged at the output end of the driving source and is driven to rotate by the driving source. The transmission rod is hinged to the inner lock core and one end of the transmission rod abuts against the transmission block and the other end abuts against the mounting seat. The transmission block drives the transmission rod to rotate to push the mounting seat to slide axially along the coupling sleeve and cooperate with the ratchet.

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