An electronic lock cylinder capable of mechanical unlocking and anti-unlocking protection

Abstract

The application discloses an electronic lock cylinder capable of being mechanically unlocked and realizing anti-unlocking protection, which comprises a lock cylinder shell, a rotating handle is arranged on the lock cylinder shell, a rotating shell is arranged in the lock cylinder shell at the front side of the rotating handle, a connecting part is arranged at the front end of the rotating shell, an outdoor rotary knob is connected to the connecting part, a clutch capable of engaging with the rotating handle is arranged on the side of the rotating shell facing the rotating handle, an electric drive assembly for driving the clutch to engage with or move away from the rotating handle is arranged in the rotating shell, a mechanical lock cylinder is arranged in the outdoor rotary knob, the connecting part is provided with a through hole, the front end of the through hole is communicated with the interior of the outdoor rotary knob, the rear end of the through hole is communicated with the rotating shell, a transmission pin is movably arranged in the through hole, the transmission pin is connected with the mechanical lock cylinder and can move forward and backward relative to the through hole under the driving of the mechanical lock cylinder, a mechanical drive assembly capable of moving forward and backward relative to the rotating shell is arranged in the rotating shell, a protection plate capable of moving up and down or left and right relative to the rotating shell is arranged in the rotating shell between the mechanical drive assembly and the through hole, a pin hole is arranged on the protection plate, the transmission pin passes through the pin hole and abuts against the front end of the mechanical drive assembly and can drive the mechanical drive assembly to move to the indoor side, a first elastic element is arranged in the rotating shell, and the first elastic element can drive the protection plate to move relative to the rotating shell when the transmission pin is separated from the pin hole, so that the pin hole and the through hole are dislocated with each other.

Description

Technical Field

[0001] This invention relates to an electronic lock cylinder that can be mechanically unlocked and also provides anti-unlock protection. Background Technology

[0002] Existing technology, such as Chinese utility model patent document, publication number CN217538235U, discloses a double-opening mortise lock cylinder, including a motor, a first clutch, an outer knob, a mechanical lock cylinder assembly, an electronic lock cylinder housing, and a fourth elastic element; the outer knob includes a knob portion and a clutch portion with a cavity; the mechanical lock cylinder assembly includes a mechanical lock cylinder housing, a lock cylinder disposed in a first cavity hole of the mechanical lock cylinder housing, and a cylindrical pin, one end of which is inserted through a first radial hole in the mechanical lock cylinder housing and fixed to the side of the lock cylinder; the motor and the first clutch are disposed in a second axial cavity hole of the electronic lock cylinder housing, the fourth elastic element is located between the bottom of the cavity of the clutch portion and the bottom of the electronic lock cylinder housing, and the free end of the first clutch extends out from the axial through hole of the electronic lock cylinder housing and the fourth elastic element; the mechanical lock cylinder assembly passes through a third radial hole of the knob portion and is disposed in a third axial cavity hole of the knob portion, and the free end of the cylindrical pin contacts the electronic lock cylinder housing.

[0003] Based on the above, in existing technology, an electronic lock cylinder housing is installed within the clutch portion of the outer knob. This electronic lock cylinder housing can move back and forth relative to the clutch portion. When the mechanical lock cylinder is unlocked, the cylindrical pin of the mechanical lock cylinder pushes the electronic lock cylinder housing, driving the entire electronic lock cylinder assembly to move. This engages the first and second clutch components, allowing unlocking by turning the outer knob. While existing technology addresses the problem of electronic malfunctions preventing unlocking by using a mechanical lock cylinder, the mechanical lock cylinder and electronic lock cylinder assembly do not provide effective anti-theft unlocking. When criminals damage the outer knob portion of the outer knob, the electronic lock cylinder assembly within the clutch portion is directly exposed. In this state, the criminals only need to push the electronic lock cylinder assembly, causing the first and second clutch components to rotate the clutch portion, thus unlocking the lock. It is evident that existing lock cylinders, which combine electronic and mechanical actuation, do not provide effective theft prevention. They can be easily unlocked once the outer knob is damaged. Lacking any anti-theft structure, they lack security and require further improvement. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an electronic lock cylinder equipped with a protective plate, in which the outdoor knob and its transmission pin are removed when the outdoor knob is damaged, and the protective plate can achieve self-locking protection under the action of a first elastic element.

[0005] An electronic lock cylinder designed for this purpose, capable of mechanical unlocking and providing anti-unlocking protection, includes a lock cylinder housing. A lever is rotatably mounted on the lock cylinder housing. A rotating housing is rotatably mounted inside the lock cylinder housing on the side in front of the lever. A connecting portion is provided at the front end of the rotating housing, and an outdoor knob is connected to the connecting portion. A clutch is provided on the side of the rotating housing facing the lever, capable of engaging and driving the lever. An electric drive assembly is provided inside the rotating housing to drive the clutch to engage or disengage from the lever. A mechanical lock cylinder is provided inside the outdoor knob. The connecting portion has a through hole, the front end of which communicates with the interior of the outdoor knob, and the rear end of which communicates with the rotating housing. A drive pin is movably mounted inside the through hole. The pin is connected to the mechanical lock cylinder and driven by the mechanical lock cylinder to move back and forth relative to the through hole. A mechanical drive assembly that can move back and forth relative to the rotating housing is provided inside the rotating housing. A protective plate that can move up and down or left and right relative to the rotating housing is provided inside the rotating housing between the mechanical drive assembly and the through hole. The protective plate is provided with a pin hole. The drive pin passes through the pin hole and abuts against the front end of the mechanical drive assembly, which can drive the mechanical drive assembly to move towards the indoor side. A first elastic element is provided inside the rotating housing. When the drive pin disengages from the pin hole, the first elastic element can drive the protective plate to move relative to the rotating housing, causing the pin hole and the through hole to be misaligned.

[0006] Preferably, the mechanical drive assembly includes a movable member disposed within the rotating housing, a drive rod disposed on the movable member, and the end of the drive rod away from the movable member contacts the clutch for transmission.

[0007] Preferably, the rotating housing is provided with a guide groove, the protective plate is movably disposed in the guide groove, the protective plate can be moved up and down or left and right relative to the guide groove, and the first elastic element is disposed in the guide groove.

[0008] Preferably, a control circuit board is provided inside the outdoor knob, and an encryption matching circuit board is provided inside the lock cylinder housing on the rear side of the protective plate. The control circuit board, the encryption matching circuit board, and the electric drive assembly are connected in sequence.

[0009] Preferably, a second elastic element is provided inside the rotating housing, and the second elastic element applies a force to the moving member to move it toward the outdoor side.

[0010] Preferably, the drive rod includes a first pushing part, an elastic telescopic part, and a second pushing part connected in sequence. The first pushing part is connected to the moving part, and the second pushing part is in contact with the clutch for transmission.

[0011] Preferably, the second propulsion section is also provided with a reinforcing sleeve.

[0012] Preferably, the rotating housing is provided with a main mounting cavity and a guide cavity, the moving part is movably disposed in the main mounting cavity, and the drive rod is movably disposed in the guide cavity.

[0013] Preferably, the power output end of the mechanical lock cylinder is connected to a transmission rod, which is fixedly connected to the transmission pin. When the mechanical lock cylinder is inserted and turned, it can drive the transmission rod and the transmission pin to move towards the indoor side.

[0014] Preferably, the outer wall of the rotating housing is provided with an annular groove, and the lock cylinder housing is provided with a limiting member that is inserted into the annular groove.

[0015] Compared with existing technologies, this invention features a pin hole connected to the through hole, located on the protective plate. When the outdoor knob is damaged and removed, the transmission pin is also taken away with it. Once the transmission pin is removed, the protective plate, no longer constrained by the transmission pin, moves relative to the rotating housing under the action of the first elastic element, causing the pin hole and the through hole to misalign. In this state, even if the outdoor knob is damaged, criminals cannot control the mechanical drive component located inside the rotating housing through the through hole, thus preventing them from controlling the clutch and lever engagement transmission. Criminals cannot operate the lock cylinder to unlock, providing anti-theft self-locking protection and enhanced security. Attached Figure Description

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0017] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is one of the cross-sectional structural schematic diagrams of the present invention;

[0019] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This is a second schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 7 This is the third cross-sectional structural schematic diagram of the present invention;

[0023] Figure 8 This is a three-dimensional structural diagram of the mechanical drive component in this invention;

[0024] Figure 9 This is a schematic diagram showing the structure where the pin hole and the through hole are misaligned.

[0025] Figure 10 This is a schematic diagram of the mechanical lock cylinder.

[0026] Figure 11 This is the fourth cross-sectional structural schematic diagram of the present invention;

[0027] Figure 12 This is the fifth cross-sectional structural schematic diagram of the present invention;

[0028] Figure 13 A schematic diagram showing the overlapping structure of the limiting part and the clearance groove;

[0029] Figure 14 This is a schematic diagram showing the structure in which the limiting part and the clearance groove are misaligned. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] See Figures 1-10An electronic lock cylinder capable of mechanical unlocking and providing anti-unlocking protection includes a lock cylinder housing 10. A lever 110 is rotatably mounted on the lock cylinder housing 10. A rotating housing 40 is rotatably mounted inside the lock cylinder housing 10 on the front side of the lever 110. A connecting portion 430 is provided at the front end of the rotating housing 40, and an outdoor knob 20 is connected to the connecting portion 430. A clutch 60, which can engage with the lever 110, is located on the side of the rotating housing 40 facing the lever 110. An electric drive assembly 50 is provided inside the rotating housing 40 to drive the clutch 60 to engage with or disengage from the lever 110. A mechanical lock cylinder 100 is located inside the outdoor knob 20. The connecting portion 430 has a through hole 431, the front end of which communicates with the interior of the outdoor knob 20, and the rear end of which communicates with the rotating housing 40. A transmission pin 102 is movably mounted inside the through hole 431. A mechanical drive assembly 70, which is connected to and driven by the mechanical lock cylinder 100, can move back and forth relative to the through hole 431. A mechanical drive assembly 70, which can move back and forth relative to the rotating housing 40, is provided inside the rotating housing 40 between the mechanical drive assembly 70 and the through hole 431. A protective plate 90, which can move up and down or left and right relative to the rotating housing 40, is provided on the protective plate 90. A drive pin 102 passes through the drive pin 102 and abuts against the front end of the mechanical drive assembly 70, which can drive the mechanical drive assembly 70 to move towards the indoor side. A first elastic element 930 is provided inside the rotating housing 40. When the drive pin 102 disengages from the drive pin 102, the first elastic element 930 can drive the protective plate 90 to move relative to the rotating housing 40, causing the drive pin 910 and the through hole 431 to be misaligned.

[0032] Based on the above embodiments, when the outdoor knob 20 is damaged and removed, the transmission pin 102 will be taken away along with it. After the transmission pin 102 is removed, the protective plate 90 is no longer constrained by the transmission pin 102. Under the action of the first elastic element 930, the protective plate 90 will move relative to the rotating housing 40, thereby causing the pin hole 910 and the through hole 431 to be misaligned. Figure 9 As shown, in this state, even if the outdoor knob 20 is damaged, criminals will still be unable to operate the mechanical drive component 70 located in the rotating housing 340 through the through hole 431, and thus will be unable to control the clutch 60 to engage with the pulley 110. Criminals will be unable to operate the lock cylinder to unlock, thus playing a role in anti-theft self-locking protection and providing better security.

[0033] Furthermore, the first elastic element 930 is a spring, which applies a downward force to the protective plate 90, and the protective plate 90 is arranged to move up and down relative to the rotating housing 40.

[0034] Furthermore, the protective plate 90 can be made of existing steel plates or other sheet materials that are resistant to impact drill bits.

[0035] See Figure 4 and Figure 8 The mechanical drive assembly 70 includes a movable part 710 disposed within the rotating housing 40, and a drive rod 720 disposed on the movable part 710. The end of the drive rod 720 away from the movable part 710 contacts the clutch 60 for transmission.

[0036] See Figure 4 and Figure 9 The rotating housing 40 is provided with a guide groove 440, and the protective plate 90 is movably disposed within the guide groove 440. The protective plate 90 can move up and down or left and right relative to the guide groove 440. The first elastic element 930 is disposed within the guide groove 440. The guide groove 440 further constrains the position of the protective plate 90, preventing it from moving back and forth relative to the rotating housing 40. This avoids the problem of the protective plate 90 moving after damage and triggering the mechanical drive assembly 70 to drive the clutch 60, effectively improving safety.

[0037] See Figure 4 The outdoor knob 20 houses a control circuit board 800, and the lock cylinder housing 10 behind the protective plate 90 houses an encryption matching circuit board 810. The control circuit board 800, the encryption matching circuit board 810, and the electric drive assembly 50 are connected in sequence. Since this product is a dual-function lock cylinder with both mechanical and electronic unlocking capabilities, the control circuit board 800, required for electronic unlocking, is located inside the outdoor knob 20. To prevent criminals from using batteries to power the electric drive assembly 50 after the outdoor knob 20 is damaged, this solution includes an encryption matching circuit board 810. The encryption matching circuit board 810 only controls the electric drive assembly 50 to unlock after receiving a matching signal from the control circuit board 800. This effectively increases security. Furthermore, the encryption matching circuit board 810's location inside the lock cylinder housing 10 behind the protective plate 90 prevents criminals from accessing it.

[0038] See Figure 4The rotating housing 40 is provided with a second elastic element 820, which applies a force to the movable member 710 to move it towards the outside. The function of the second elastic element 820 is, under normal conditions, to assist the mechanical drive assembly 70 in resetting; when the mechanical lock cylinder 100 drives the mechanical drive assembly 70 to move towards the inside, the second elastic element 820 is compressed; when the rotary key drives the mechanical lock cylinder 100 to reset the mechanical drive assembly 70 towards the inside, the second elastic element 820 releases its stored force to reset the mechanical drive assembly 70.

[0039] Furthermore, the second elastic element 820 is selected as a spring.

[0040] Meanwhile, when the outdoor knob 20 is damaged, the second elastic element 820 can push the transmission pin 102 that abuts against the mechanical drive assembly 70 to the outdoor side, playing an auxiliary pushing role. Ultimately, the transmission pin 102 still needs to be taken out to the outside of the through hole 431 when the outdoor knob 20 is taken away.

[0041] See Figure 8 The drive lever 720 includes a first pushing part 721, an elastic telescopic part 722, and a second pushing part 723 connected in sequence. The first pushing part 721 is connected to the moving member 710, and the second pushing part 723 contacts and drives the clutch 60. The function of the elastic telescopic part 722 is that when the drive lever 720 pushes the clutch 60 to move towards the lever 110, the elastic telescopic part 722 can be compressed to avoid damage caused by hard contact.

[0042] See Figure 5 The second propulsion part 723 is also provided with a reinforcing sleeve 730. The reinforcing sleeve 730 can strengthen the second propulsion part 723 to enhance its stability.

[0043] Furthermore, the drive rod 720 is provided with two rods, which are respectively located on the upper and lower sides of the moving part 710.

[0044] Furthermore, an installation plate 80 is provided inside the rotating housing 40, and one end of the second elastic element 820 is connected to the installation plate 80, and the other end is connected to the moving part 710.

[0045] See Figure 4 The rotating housing 40 is provided with a main mounting cavity 401 and a guide cavity 400. The moving part 710 is movably disposed in the main mounting cavity 401, and the driving rod 720 is movably disposed in the guide cavity 400.

[0046] See Figure 6The mechanical lock cylinder 100 has a power output end connected to a transmission rod 101, which is fixedly connected to the transmission pin 102. When the mechanical lock cylinder 100 is inserted and rotated, it can drive the transmission rod 101 and the transmission pin 102 to move towards the indoor side.

[0047] See Figure 10 The mechanical lock cylinder 100 includes a lock cylinder housing 103 and a lock cylinder drive rod 104 rotatably disposed relative to the lock cylinder housing 103. The lock cylinder drive rod 104 is provided with a guide pin 106, and the lock cylinder housing 103 is provided with a guide spiral groove 105. The guide pin 106 is movably disposed on the guide spiral groove 105. When a matching key passes through the lock cylinder housing 103 and is inserted into the lock cylinder drive rod 104, driving the lock cylinder drive rod 104 to rotate, the lock cylinder drive rod 104 can rotate and move at the same time under the cooperation of the guide spiral groove 105 and the guide pin 106, so as to drive the transmission rod 101 together with the transmission pin 102 to move towards the indoor side.

[0048] Furthermore, the transmission rod 101 is connected to the lock cylinder drive rod 104 via a shaft. Since the lock cylinder drive rod 104 needs to rotate and move simultaneously, the transmission rod 101 is located at the connection point with the lock cylinder drive rod 104, and the transmission rod 101 can rotate relative to the lock cylinder drive rod 104.

[0049] Furthermore, the transmission rod 101 is riveted and fixed to the transmission pin 102.

[0050] See Figure 7 The outer wall of the rotating housing 40 is provided with an annular groove 403, and the lock cylinder housing 10 is provided with a limiting member 402 that is inserted into the annular groove 403. This structure can constrain the rotating housing 40, preventing it from moving back and forth, but it can rotate relative to the lock cylinder housing 10.

[0051] See Figure 3 An indoor knob 30 is provided on the rear side of the lock cylinder housing 10. The indoor knob 30 is connected to a drive shaft 310, which extends into the lock cylinder housing 10 and is connected to the lever 110 for transmission.

[0052] See Figure 1 and Figure 2 The outdoor knob 20 is equipped with a protective cover 200 to cover the mechanical lock cylinder 100.

[0053] See Figure 3 The outdoor knob 20 contains a battery 201 for power supply.

[0054] See Figure 5The clutch 60 is provided with a clutch pin 610, and the lever 110 is provided with a clutch hole 111. When the clutch 60 is driven by the electric drive assembly 50 or the mechanical drive assembly 70, the clutch 60 moves toward the lever 110. When the clutch pin 610 is inserted into the clutch hole 111, engagement is completed. In the engaged state, rotating the outdoor knob 20 can drive the rotating housing 40 to rotate through the connecting part 430, thereby driving the clutch 60 located in the rotating housing 40 to rotate, and thus driving the lever 110 to rotate.

[0055] Furthermore, the electric drive assembly 50 adopts a conventional structure, which consists of a motor part 510 and a return spring 520. The motor part 510 is used to drive the clutch 60 to move toward the pulley 110, while the return spring 520 is used to drive the clutch 60 to reset and separate from the pulley 110.

[0056] See Figure 4 The outdoor knob 20 is fixed to the connecting part 430 by bolts and threads. Alternatively, it can be assembled using existing conventional installation structures.

[0057] See Figures 11 to 14 The protective plate 90 is arranged to move up and down relative to the rotating housing 40. A linkage rod 450 is provided on the protective plate 90. A limiting part 460 is provided at one end of the linkage rod 450 near the clutch 60. The limiting part 460 is located between the lever 110 and the clutch 60. An anti-air groove 620 is provided on the clutch 60 at the position corresponding to the limiting part 460.

[0058] When the pin hole 910 and the through hole 431 overlap, the clearance groove 620 and the limiting part 460 overlap, and the clutch 60 can move toward the lever 110 so that the limiting part 460 passes through the clearance groove 620.

[0059] When the pin hole 910 and the through hole 431 are misaligned, the clearance groove 620 and the limiting part 460 are misaligned, and the limiting part 460 abuts against the end face of the clutch 60 facing the drag 110, preventing the clutch 60 from moving towards the drag 110.

[0060] Furthermore, the rotating housing 40 is provided with a guide space, and the linkage rod 450 is arranged to move up and down in the guide space. The guide space is open at both ends, so that the front end of the linkage rod 450 can be connected to the limiting part 460 and the lever 60 and the drag 110, while the rear end is fixedly connected to the protective plate 90.

[0061] When the outdoor knob 20 is broken and removed, the transmission pin 102 will be taken away with it. After the transmission pin 102 is removed, the protective plate 90 is no longer constrained by it. Under the action of the first elastic element 930, the protective plate 90 will move downwards relative to the rotating housing 40. During this downward movement, the protective plate 90 will simultaneously drive the linkage rod 450 downwards, causing the clearance groove 620 and the limiting part 460 to misalign. In this misaligned state, as... Figure 14 As shown. In this state, even if the protective plate 90 is drilled through by an impact drill, and criminals insert tools through the drill hole to push the clutch 60, the clutch 60 will be blocked by the limiting part 460 and cannot move toward the pulley 110. That is, the clutch 60 and the limiting part 460 cannot engage and transmit power, and the lock cannot be unlocked. This further provides security protection against theft and unlocking, and can improve security.

[0062] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An electronic lock cylinder capable of mechanical unlocking and anti-unlocking protection, comprising a lock cylinder housing (10), a lever (110) rotatably disposed on the lock cylinder housing (10), a rotating housing (40) rotatably disposed inside the lock cylinder housing (10) on the front side of the lever (110), a connecting part (430) disposed at the front end of the rotating housing (40), an outdoor knob (20) connected to the connecting part (430), a clutch (60) on the side of the rotating housing (40) facing the lever (110) that can engage and drive the lever (110), an electric drive assembly (50) for driving the clutch (60) to engage or disengage from the lever (110) is disposed inside the rotating housing (40), and a mechanical lock cylinder (100) is disposed inside the outdoor knob (20), characterized in that: The connecting part (430) is provided with a through hole (431). The front end of the through hole (431) is connected to the interior of the outdoor knob (20), and the rear end is connected to the rotating housing (40). A transmission pin (102) is movably disposed in the through hole (431). The transmission pin (102) is connected to the mechanical lock cylinder (100) and is driven by the mechanical lock cylinder (100) to move back and forth relative to the through hole (431). A mechanical drive assembly (70) that can move back and forth relative to the rotating housing (40) is provided in the rotating housing (40). A device that can move up and down or left and right relative to the rotating housing (40) is provided in the rotating housing (40) between the mechanical drive assembly (70) and the through hole (431). A movable protective plate (90) is provided with a pin hole (910). The transmission pin (102) passes through the pin hole (910) and abuts against the front end of the mechanical drive assembly (70), which can drive the mechanical drive assembly (70) to move towards the indoor side. A first elastic element (930) is provided inside the rotating housing (40). When the transmission pin (102) disengages from the pin hole (910), the first elastic element (930) can drive the protective plate (90) to move relative to the rotating housing (40), causing the pin hole (910) and the through hole (431) to be misaligned. A protective cover (200) for covering the mechanical lock cylinder (100) is provided on the outdoor knob (20).

2. The electronic lock cylinder that can be mechanically unlocked and provides anti-unlock protection according to claim 1, characterized in that: The mechanical drive assembly (70) includes a movable part (710) disposed within the rotating housing (40), and a drive rod (720) is disposed on the movable part (710). The end of the drive rod (720) away from the movable part (710) contacts the clutch (60) for transmission.

3. The electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to claim 1, characterized in that: The rotating housing (40) is provided with a guide groove (440), the protective plate (90) is movably disposed in the guide groove (440), the protective plate (90) can be moved up and down or left and right relative to the guide groove (440), and the first elastic element (930) is disposed in the guide groove (440).

4. The electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to claim 1, characterized in that: The outdoor knob (20) is equipped with a control circuit board (800), and the lock cylinder housing (10) behind the protective plate (90) is equipped with an encryption matching circuit board (810). The control circuit board (800), the encryption matching circuit board (810) and the electric drive assembly (50) are connected in sequence.

5. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlock protection according to claim 2, characterized in that: The rotating housing (40) is provided with a second elastic element (820), which applies a force to the moving part (710) to move it toward the outside.

6. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to claim 2 or 5, characterized in that: The drive rod (720) includes a first push part (721), an elastic telescopic part (722), and a second push part (723) connected in sequence. The first push part (721) is connected to the moving part (710), and the second push part (723) is in contact with the clutch (60) for transmission.

7. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to claim 6, characterized in that: The second propulsion unit (723) is also provided with a reinforcing sleeve (730).

8. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to claim 2 or 5, characterized in that: The rotating housing (40) is provided with a main mounting cavity (401) and a guide cavity (400). The moving part (710) is movably disposed in the main mounting cavity (401), and the driving rod (720) is movably disposed in the guide cavity (400).

9. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to any one of claims 1 to 5, characterized in that: The power output end of the mechanical lock cylinder (100) is connected to a transmission rod (101), which is fixedly connected to the transmission pin (102). When the mechanical lock cylinder (100) is inserted and rotated, it can drive the transmission rod (101) and the transmission pin (102) to move towards the indoor side.

10. An electronic lock cylinder that can be mechanically unlocked and provides anti-unlocking protection according to any one of claims 1 to 5, characterized in that: The protective plate (90) is arranged to move up and down relative to the rotating housing (40). A linkage rod (450) is provided on the protective plate (90). A limiting part (460) is provided at one end of the linkage rod (450) near the clutch (60). The limiting part (460) is located between the lever (110) and the clutch (60). A clearance groove (620) is provided on the clutch (60) at the position corresponding to the limiting part (460). When the pin hole (910) and the through hole (431) coincide, the clearance groove (620) and the limiting part (460) coincide, and the clutch (60) can move toward the lever (110) so that the limiting part (460) passes through the clearance groove (620). When the pin hole (910) and the through hole (431) are misaligned, the clearance groove (620) and the limiting part (460) are misaligned, and the limiting part (460) abuts against the end face of the clutch (60) facing the drag (110), preventing the clutch (60) from moving toward the drag (110).

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