An electronic lock that can be opened with a key

Abstract

An electronic lock that can be unlocked with a key. This invention addresses the problems of existing technologies, such as non-compact structure, numerous and large components, excessive space occupation, hindering optimal mechanism layout, cumbersome installation and adjustment, susceptibility to malfunction, and high price and maintenance costs. Technical solution: Includes a lock head gear, a rotating tongue, an electronic lock head drive assembly, an electronic lock head drive assembly mounting base, a rotating rod, a mechanical lock head, and a mechanical lock head mounting base; the lock head gear is fitted onto the roller shutter door lock housing, and has a drive through hole; the roller shutter door lock rod meshes with the lock head gear; the front part of the rotating tongue is inserted into the drive through hole; the rotating tongue is placed on the rotating hole of the electronic lock head drive assembly, and the rotating hole engages with the rotating tongue in a driving fit; the rotating rod has protruding pin end sections on both sides, which slide in fit with the inclined and circumferential sliding grooves of the rotating tongue; the mechanical lock head is connected to the rear end of the rotating rod; the power supply terminal of the electronic lock head drive assembly is electrically connected to the electronic lock head control circuit.

Description

Technical Field

[0001] This invention relates to door lock cylinders, and more particularly to an electronic lock that can be unlocked with a key. It is suitable for use in roller shutter door locks. Background Technology

[0002] Currently, most roller shutter door locks are mechanical locks that use keys for locking or unlocking, while some are electronic mechanical locks that use a remote control to deactivate the lock and then use a key for locking or unlocking. Electronic locks for roller shutter doors that use remote controls for locking or unlocking have also emerged. Because the lock can be operated without approaching the roller shutter door, they are more convenient and are expected to become the mainstream type of roller shutter door lock. However, electronic locks are prone to failure due to power outages or electrical component malfunctions. Although there are electronic locks in other fields that can be opened with a spare key if the electronic lock fails, their lock structures are complex and have many components, making them too expensive and unsuitable for roller shutter door locks.

[0003] The applicant's earlier Chinese patent application, CN119373371A, discloses a lock cylinder capable of both mechanical and electronic unlocking. This lock cylinder can be opened with a spare key when the electronic lock cylinder fails. Its structure includes a lock housing, a lock cylinder, a lock cylinder drive gear, a drive rod, and a locking bar. The lock cylinder is fixedly mounted on the lock housing, the lock cylinder drive gear is fixedly mounted on the rear rotating rod head of the lock cylinder, and the locking bar is slidably fitted onto the lock housing. The drive rod has a rack that meshes with the lock cylinder drive gear. The drive end of the drive rod is hinged to one end of the locking bar, and the other end of the locking bar directly serves as a bolt or engages with a latch. The lock cylinder further includes a motor driver and a sliding block, and the locking bar consists of a front section, a rear section, and a compression spring. The locking rod is configured such that its front and rear sections are slidably engaged with the lock housing, the rear end of the rear section is hinged to the drive end of the drive rod, the front of the rear section has an elongated groove, and a forward-extending spring sleeve is provided on the back of the rear section behind the elongated groove. The rear of the front section has a protruding locking rod slider and a push plate. The locking rod slider of the front section is slidably engaged in the elongated groove of the rear section. A compression spring is sleeved on the spring sleeve, and its front end abuts against the locking rod slider. The motor driver is fixedly mounted on the lock housing, and the sliding push block is slidably engaged on the lock housing. The drive screw on the motor driver is threaded into the screw hole of the sliding push block, and the drive end of the sliding push block is pushed by the push plate of the front section of the locking rod. However, the drawbacks of this solution are: the electronic lock head has a non-compact structure, with relatively large and numerous components, which occupy too much space inside the roller shutter lock housing, affecting the optimal arrangement of the roller shutter lock's working mechanism, and making installation and adjustment more troublesome, prone to operational malfunctions. As a result, the quality of the roller shutter lock head is not high, and the price and maintenance costs are high, which affects its widespread application. Summary of the Invention

[0004] To overcome the problems of existing technologies, such as non-compact structure, large and numerous components that occupy too much space in the roller shutter lock housing, affecting the optimal arrangement of the roller shutter lock's working mechanism, causing troublesome installation and adjustment, and being prone to operational failures, resulting in high prices and maintenance costs and hindering widespread application, the purpose of this invention is to provide an improved key-operable electronic lock that can overcome the shortcomings of existing technologies.

[0005] The technical solution adopted by this invention to solve its technical problem is: an electronic lock that can be unlocked with a key, characterized in that: it includes a lock head gear for driving a roller shutter door locking rod, a rotating tongue for driving the lock head gear, an electronic lock head drive assembly for driving the rotating tongue, an electronic lock head drive assembly mounting seat for mounting the electronic lock head drive assembly on the roller shutter door lock housing, a rotating rod rotatably engaged with the rotating tongue, a mechanical lock head connected to the rear end of the rotating rod, and a mechanical lock head mounting seat for mounting the mechanical lock head on the roller shutter door lock housing; wherein the lock head gear is rotatably engaged with the roller shutter door lock housing by one side of its shaft, and the center of the shaft of the lock head gear is provided with a drive through hole, and the roller shutter door locking rod... The rack on the lock head meshes with the lock head gear; the front part of the rotating tongue is inserted into the drive through hole and drives and slides with the drive through hole; the rotating tongue passes through the rotating hole of the electronic lock head drive assembly, and the drive end on the rotating hole drives the middle part of the rotating tongue; the front end of the rotating rod has a pin end section protruding radially on both sides, and the rotating rod slides with the inclined slide groove and circumferential slide groove on the rear part of the rotating tongue by the pin end section; the mechanical lock head is fixedly connected to the rear end of the rotating rod by its rotation control end; the power supply end of the electronic lock head drive assembly is electrically connected to the electronic lock head control circuit installed and fixed on the rolling shutter door lock shell.

[0006] The front part of the rotating tongue described in the above technical solution can be a flat-section rod segment for driving the lock gear of the rolling shutter door to rotate. The middle part of the rotating tongue can be a cylindrical segment. Two driven latches are evenly distributed on the outer side of the middle part, which are driven by the drive end of the electronic lock head drive assembly. The driven latches are axially slidingly engaged or disengaged from the drive end of the electronic lock head drive assembly. The rear part of the rotating tongue has an axial central hole extending inward from its rear end face. Two inclined sliding grooves are evenly distributed on the side wall of the rear part. The inclined sliding grooves penetrate from the outside of the side wall to the axial central hole. Two circumferential sliding grooves are evenly distributed at the junction of the rear part and the middle part, which are respectively connected to the front ends of the two inclined sliding grooves. The circumferential sliding grooves also penetrate from the outside of the side wall to the axial central hole.

[0007] The two inclined slides of the rotating tongue described in the above technical solution can be inclined in the same direction of rotation and with the same inclination angle. The rear ends of the two inclined slides are respectively located on the rear wall of the rotating tongue. The two circumferential slides are respectively connected to the front ends of the two inclined slides and are connected along the inclination direction of the inclined slides.

[0008] The rotating rod described in the above technical solution can be in the locked position when its pin end is at the junction of the two inclined sliding grooves and the two circumferential sliding grooves.

[0009] The rotating shaft described in the above technical solution can be fitted into the axial center hole of the rotating tongue before the pin is tightly fitted. Then the pin passes through the outside of one of the inclined grooves of the rotating tongue and is tightly fitted into the shaft hole of the rotating rod, forming the pin end sections that protrude radially on both sides of the rotating rod. Then the two pin end sections are respectively slidably fitted into the two inclined grooves of the rotating tongue.

[0010] The electronic lock head drive assembly described in the above technical solution can be composed of a housing, a motor mounted and fixed on the housing, a drive gear mounted and fixed on the shaft of the motor, a drive wheel rotatably engaged in the housing, and a transmission gear. The drive gear meshes with the drive wheel through the transmission gear. The drive wheel is provided with the rotation orifice. Two drive ends are evenly distributed on the inner sidewall of the rotation orifice, which respectively engage with the two driven latches of the rotating tongue. The upper and lower sides of the rotation orifice are exposed outside the housing through through holes on the housing.

[0011] The electronic lock head drive assembly mounting base described in the above technical solution can be installed and fixed on the pad on the inner bottom surface of the roller shutter door lock shell. The electronic lock head drive assembly is fitted into the mounting rod on the electronic lock head drive assembly mounting base through the mounting hole, and the mounting rod is locked from the top side of the mounting hole by screws to achieve installation and fixation.

[0012] The mechanical lock head mounting base described in the above technical solution can be secured by a screw passing through a nail hole one on the rolling shutter door lock housing and then locking it with a screw hole one on the mechanical lock head mounting base, thereby fixing the mechanical lock head mounting base to the inner side of the rolling shutter door lock housing. The mechanical lock head is fixed to the mechanical lock head mounting base by a screw. The rotation control end of the mechanical lock head is provided with a groove. The rear end of the rotating rod is a flat section rod head. The rear end of the rotating rod is inserted into the groove of the rotation control end. A screw threadedly passes through a screw hole two on the rotation control end and then through a nail hole two at the rear end of the rotating rod to achieve a fixed connection between the rotation control end and the rear end of the rotating rod. The mechanical lock head mounting base is provided with an operating hole for operating the screw threadedly passing through the screw hole two on the rotation control end.

[0013] The mechanical lock head described in the above technical solution can adopt a general structure, which is a common existing technology. Specifically, it can include a lock body, a rotating shaft that is rotatably fitted in the lock body, and several elastic top balls of different lengths disposed in the lock body. The front end of the rotating shaft is a keyhole, the middle is a key groove, and the rear end is a rotation control end. The elastic top balls are radially locked between the lock body and the key groove, so that the rotating shaft cannot rotate to achieve locking. When the key is inserted from the keyhole into the key groove, if all the elastic top balls can be pushed out of the key groove, the key can control the rotating shaft to rotate to achieve unlocking.

[0014] The working principle of the above technical solution is as follows: When the fixed mechanical lock head is not activated, the rotating shaft does not rotate. The fixed electronic lock head drive assembly is controlled by its electronic lock head control circuit through its motor, transmission gear, and drive wheel to rotate its drive end, driving the driven latch of the rotating tongue to control the rotation of the rotating tongue. This, in turn, drives the lock head gear of the roller shutter door lock to rotate, controlling the movement of the roller shutter door lock rod to achieve locking or unlocking of the roller shutter door lock. During this process, the two circumferential sliding grooves of the rotating tongue slide along the two pin ends on the rotating shaft, without interference from the stationary rotating shaft. When the electronic lock head drive assembly or electronic lock head control circuit malfunctions and the roller shutter door lock is in the locked state, the rotating tongue is controlled by the electronic lock head drive assembly. When the drive end of the lock cylinder drive assembly is locked and does not rotate, a key can be inserted to turn the rotation control end of the mechanical lock cylinder. This first causes the rotating shaft to rotate, thereby causing the two pin ends located at the junction of the two inclined slides and the two circumferential slides to slide within the two inclined slides. This forces the rotating tongue to move axially forward, causing the driven latch to slide axially away from the drive end of the electronic lock cylinder drive assembly. The rotating tongue then disengages from the locking of the electronic lock cylinder drive assembly. At this point, the two pin ends are at the rear end of the two inclined slides. Then, the key is operated to continue turning the rotation control end of the mechanical lock cylinder in the same direction. The two pin ends on the rotating shaft drive the rotating tongue to rotate, thus controlling the roller shutter lock to unlock.

[0015] The beneficial effects of this invention are as follows: First, the improved key-operated electronic lock has a compact structure with fewer and smaller components, thus occupying less space inside the roller shutter door lock housing. This allows for optimal arrangement of the lock head mechanism within the roller shutter door, facilitating installation and adjustment, and ensuring high operational reliability. Consequently, maintenance costs are effectively reduced, and the quality of the roller shutter door lock is improved. Second, a cleverly designed working pair of a rotating tongue and a rotating rod can organically coordinate the non-interference relationship between the electronic lock head and the mechanical lock head, greatly simplifying the structure of the key-operated electronic lock. This not only simplifies the structure and reduces the price of the key-operated electronic lock but also makes installation and adjustment convenient, effectively improving the quality of the roller shutter door lock.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 A scaled-down diagram showing the separation of components.

[0019] Figure 3 yes Figure 1 A top view of the roller shutter door lock housing, lock head gear, and roller shutter door lock rod.

[0020] Figure 4 yes Figure 1 A magnified 3D diagram of the rotating tongue.

[0021] Figure 5 yes Figure 4 A three-dimensional diagram of the rotating tongue at another angle.

[0022] Figure 6 yes Figure 1 A three-dimensional enlarged schematic diagram of the rotating rod.

[0023] Figure 7 yes Figure 1 A three-dimensional enlarged schematic diagram of the mounting base for the electronic lock cylinder drive assembly.

[0024] Figure 8 yes Figure 1 A three-dimensional enlarged schematic diagram of the electronic lock cylinder drive assembly.

[0025] Figure 9 yes Figure 1 A three-dimensional enlarged schematic diagram of the mechanical lock head mounting base.

[0026] Figure 10 yes Figure 1 A three-dimensional magnified schematic diagram of a mechanical lock head.

[0027] In the diagram: 1. Roller shutter door locking rod; 2. Lock head gear; 3. Rotating tongue; 4. Electronic lock head drive assembly; 5. Roller shutter door lock housing; 6. Electronic lock head drive assembly mounting base; 7. Rotating rod; 8. Rear end; 9. Mechanical lock head; 10. Mechanical lock head mounting base; 11. One side shaft end; 12. Drive through hole; 13. Front; 14. Rotating hole; 15. Drive end; 16. Middle; 17. Pin end section; 18. Rear 19. Inclined slide; 20. Circumferential slide; 21. Rotation control end; 22. Driven bayonet; 23. Axial center hole; 24. Rear end; 25. Connection point; 26. Housing; 27. Motor; 28. Through hole; 29. ​​Foot; 30. Mounting hole; 31. Mounting rod; 32. Nail hole one; 33. Screw hole one; 34. Groove; 35. Screw hole two; 36. Nail hole two; 37. Operating hole; 38. Drive wheel. Detailed Implementation

[0028] Reference Figures 1-10This electronic lock, which can be unlocked with a key, is characterized by comprising: a lock head gear 2 that drives a roller shutter door locking rod 1; a rotating tongue 3 that drives the lock head gear 2; an electronic lock head drive assembly 4 that drives the rotating tongue 3; an electronic lock head drive assembly mounting base 6 for mounting the electronic lock head drive assembly 4 on a roller shutter door lock housing 5; a rotating rod 7 that rotatably engages with the rotating tongue 3; a mechanical lock head 9 connected to the rear end 8 of the rotating rod 7; and a mechanical lock head mounting base 10 for mounting the mechanical lock head 9 on the roller shutter door lock housing 5; wherein the lock head gear 2 is rotatably engaged with the roller shutter door lock housing 5 by a shaft end 11 on one side; the shaft center of the lock head gear 2 is provided with a drive through hole 12; and the rack on the roller shutter door locking rod 1 meshes with the lock head gear 2; the rotating... The front part 13 of the tongue 3 is inserted into the drive through hole 12 and is driven and slidably engaged with the drive through hole 12; the rotating tongue 3 passes through the rotating hole 14 of the electronic lock head drive assembly 4, and the drive end 15 on the rotating hole 14 is drivenly engaged with the middle part 16 of the rotating tongue 3; the front end of the rotating rod 7 has a pin end section 17 protruding radially on both sides, and the rotating rod 7 is slidably engaged with the inclined slide groove 19 and the circumferential slide groove 20 on the rear part 18 of the rotating tongue 3 by its pin end section 17; the mechanical lock head 9 is fixedly connected to the rear end 8 of the rotating rod 7 by its rotation control end 21; the power supply end of the electronic lock head drive assembly 4 is electrically connected to the electronic lock head control circuit (not shown) installed and fixed on the rolling shutter door lock housing 5.

[0029] Additionally, the front part 13 of the rotating tongue 3 is a flat-section rod segment for driving the lock gear 2 to rotate, the middle part 16 of the rotating tongue 3 is a cylindrical segment, and two driven bayonets 22 are evenly distributed on the outer side of the middle part 16, which are driven by the drive end 15 of the electronic lock drive assembly 4. The driven bayonets 22 are axially slidingly engaged or disengaged from the drive end 15 of the electronic lock drive assembly 4. The rear part 18 of the rotating tongue 3 has an axial center hole 23 extending inward from its rear end face. Two inclined slide grooves 19 are evenly distributed on the side wall of the rear part 18, and the inclined slide grooves 19 penetrate from the outside of the side wall to the axial center hole 23. Two circumferential slide grooves 20 are evenly distributed at the junction of the rear part 18 and the middle part 16, which are respectively connected to the front ends of the two inclined slide grooves 19. The circumferential slide grooves 20 also penetrate from the outside of the side wall to the axial center hole 23.

[0030] The two inclined slides 19 of the rotating tongue 3 are inclined in the same direction of rotation and at the same angle. The rear ends 24 of the two inclined slides 19 are respectively located on the rear wall 18 of the rotating tongue 3. The two circumferential slides 20 are respectively connected to the front ends of the two inclined slides 19 and are connected along the inclined direction of the inclined slides 19.

[0031] When the two pin ends 17 of the rotating rod 7 are respectively at the junction 25 of the two inclined slide grooves 19 and the two circumferential slide grooves 20, the rolling shutter door locking rod 1 is in the locked position.

[0032] The rotating shaft 7 is fitted into the axial center hole 23 of the rotating tongue 3 before the pin is tightly fitted. Then the pin passes through the outside of one of the inclined grooves 19 of the rotating tongue 3 and is tightly fitted into the shaft hole of the rotating rod 7, forming the pin end sections 17 that protrude radially on both sides of the rotating rod 7. Then the two pin end sections 17 are respectively slidably fitted into the two inclined grooves 19 of the rotating tongue 3.

[0033] The electronic lock head drive assembly 4 consists of a housing 26, a motor 27 mounted and fixed on the housing 26, a drive gear fixed on the shaft of the motor, a drive wheel 38 rotatably engaged within the housing 26, and a transmission gear. The drive gear meshes with the drive wheel 38 through the transmission gear. The drive wheel 38 is provided with a rotating opening 14. Two drive ends 15 are evenly distributed on the inner side wall of the rotating opening 14, which respectively engage with the two driven latches 22 of the rotating tongue 3. The upper and lower sides of the rotating opening 14 are exposed outside the housing 26 through through holes 28 on the housing 26.

[0034] The electronic lock head drive assembly mounting base 6 is mounted and fixed on the pad 29 on the inner bottom surface of the roller shutter door lock housing 5. The electronic lock head drive assembly 4 is fitted into the mounting rod 31 on the electronic lock head drive assembly mounting base 6 through the mounting hole 30 thereon, and then the mounting rod 31 is locked from the top side of the mounting hole 30 by screws to achieve installation and fixation.

[0035] The mechanical lock head mounting base 10 is secured by screws passing through nail holes 32 on the roller shutter door lock housing 5 and then locking the screw holes 33 on the mechanical lock head mounting base 10, thereby fixing the mechanical lock head mounting base 10 to the inner side of the roller shutter door lock housing 5. The mechanical lock head 9 is fixed to the mechanical lock head mounting base 10 by screws. The rotation control end 21 of the mechanical lock head 9 is provided with a groove 34. The rear end 8 of the rotating rod 7 is a flat section rod head. The rear end 8 of the rotating rod 7 is inserted into the groove 34 of the rotation control end 21. The screw threadedly passes through the screw hole 35 of the rotation control end 21 and then through the nail hole 36 of the rear end 8 of the rotating rod 7 to achieve a fixed connection between the rotation control end 21 and the rear end 8 of the rotating rod 7. The mechanical lock head mounting base 10 is provided with an operating hole 37 for operating the screw threadedly passing through the screw hole 35 of the rotation control end 21.

[0036] The mechanical lock cylinder 9 adopts a general structure, which is a common existing technology. Specifically, it can include a lock body, a rotating shaft that is rotatably fitted in the lock body, and several elastic top balls of different lengths disposed in the lock body. The front end of the rotating shaft is a keyhole, the middle is a key groove, and the rear end is a rotation control end. The elastic top balls are radially locked between the lock body and the key groove, so that the rotating shaft cannot rotate to achieve locking. When the key is inserted from the keyhole into the key groove, if all the elastic top balls can be pushed out of the key groove, the key can control the rotating shaft to rotate to achieve unlocking.

[0037] In use, when the fixed mechanical lock head 9 is not activated, the rotating shaft 7 does not rotate. The fixed electronic lock head drive assembly 4 is controlled by its electronic lock head control circuit through its motor 27, speed gear, and drive wheel 38 to rotate its drive end 15, which drives the driven latch 22 of the rotating tongue 3, thereby controlling the rotation of the rotating tongue 3. This, in turn, drives the lock head gear 2 of the roller shutter door to rotate, thereby driving the locking rod 1 of the roller shutter door to lock or unlock the lock head. During this process, the two circumferential directions of the rotating tongue 3... The slide 20 slides along the two pin ends 17 on the rotating shaft 7, unaffected by the stationary rotating shaft 7. When the electronic lock head drive assembly 4 or its electronic lock head control circuit malfunctions and the roller shutter lock is in the locked state, the rotating tongue 3 is jammed by the drive end 15 of the electronic lock head drive assembly 4 and does not rotate. At this time, a key can be inserted to turn the rotation control end 21 of the mechanical lock head 9, first causing the rotating shaft 7 to rotate, thereby causing the two inclined slides 19 and the two circumferential slides 20 to slide together. The two pin ends 17 at the junction 25 of 0 slide within the two inclined slide grooves 19, forcing the rotating tongue 3 to move axially forward, thereby causing the driven latch 22 to slide axially away from the drive end 15 of the electronic lock head drive assembly 4. The rotating tongue 3 then disengages from the electronic lock head drive assembly 4. At this time, the two pin ends 17 are at the rear end 24 of the two inclined slide grooves 19. Then, the key is operated to continue rotating the rotation control end 21 of the mechanical lock head 9 in the same direction, through the two on the rotating shaft 7. The pin end section 17 drives the rotating tongue 3 to rotate, controlling the roller shutter door lock to unlock. After the roller shutter door lock is opened, the faulty electronic lock head drive assembly 4 or its electronic lock head control circuit can be inspected and repaired. After the fault is cleared, the rotation control end 21 of the mechanical lock head 9 is turned by the key, so that the two pin end sections 17 on the rotating shaft 7 return to the junction 25 of the two inclined slide grooves 19 and the two circumferential slide grooves 20, so that the restored electronic lock head drive assembly 4 can control the locking or unlocking of the roller shutter door lock.

Claims

1. An electronic lock that can be unlocked with a key, characterized in that: The device includes a lock head gear for driving the roller shutter door locking rod, a rotating tongue for driving the lock head gear, an electronic lock head drive assembly for driving the rotating tongue, an electronic lock head drive assembly mounting base for mounting the electronic lock head drive assembly on the roller shutter door lock housing, a rotating rod rotatably engaged with the rotating tongue, a mechanical lock head connected to the rear end of the rotating rod, and a mechanical lock head mounting base for mounting the mechanical lock head on the roller shutter door lock housing; wherein the lock head gear is rotatably engaged with the roller shutter door lock housing by one of its shaft ends, the shaft center of the lock head gear has a drive through hole, and the rack on the roller shutter door locking rod meshes with the lock head gear; the rotating tongue... The front part of the mechanical lock head is inserted into the drive through hole and engages with the drive through hole for both driving and sliding; the rotating tongue passes through the rotating hole of the electronic lock head drive assembly, and the driving end of the rotating hole engages with the middle part of the rotating tongue for driving; the front end of the rotating rod has radially protruding pin end sections on both sides, and the rotating rod engages with the inclined sliding groove and circumferential sliding groove on the rear part of the rotating tongue via the pin end sections; the mechanical lock head is fixedly connected to the rear end of the rotating rod via its rotation control end; the power supply end of the electronic lock head drive assembly is electrically connected to the electronic lock head control circuit installed and fixed on the rolling shutter door lock housing.

2. The electronic lock that can be unlocked with a key according to claim 1, characterized in that: The front part of the rotating tongue is a flat-section rod segment for driving the lock gear of the rolling shutter door. The middle part of the rotating tongue is a cylindrical segment. Two driven latches are evenly distributed on the outer side of the middle part, which are driven by the drive end of the electronic lock head drive assembly. The driven latches are axially slidingly engaged or disengaged from the drive end of the electronic lock head drive assembly. The rear part of the rotating tongue has an axial central hole extending inward from its rear end face. Two inclined sliding grooves are evenly distributed on the side wall of the rear part. The inclined sliding grooves pass through the outside of the side wall to the axial central hole. At the junction of the rear part and the middle part, two circumferential sliding grooves are evenly distributed, which are respectively connected to the front ends of the two inclined sliding grooves. The circumferential sliding grooves also pass through the outside of the side wall to the axial central hole.

3. The electronic lock that can be unlocked with a key according to claim 2, characterized in that: The two inclined grooves of the rotating tongue are inclined in the same direction of rotation and at the same angle. The rear ends of the two inclined grooves are respectively located on the rear wall of the rotating tongue. The two circumferential grooves are respectively connected to the front ends of the two inclined grooves and are connected along the inclined direction of the inclined grooves.

4. The electronic lock that can be unlocked with a key according to claim 2 or 3, characterized in that: When the pivot end of the rotating rod is located at the junction of the two inclined sliding grooves and the two circumferential sliding grooves, the rolling shutter door locking rod is in the locked position.

5. The electronic lock that can be unlocked with a key according to claim 2 or 3, characterized in that: The rotating shaft is fitted into the axial center hole of the rotating tongue before the pin is tightly fitted. Then the pin passes through the outside of one of the inclined grooves of the rotating tongue and is tightly fitted into the shaft hole of the rotating rod, forming the pin end sections that protrude radially on both sides of the rotating rod. Then the two pin end sections are respectively slidably fitted into the two inclined grooves of the rotating tongue.

6. The key-operable electronic lock according to claim 1, 2 or 3, characterized in that: The electronic lock head drive assembly consists of a housing, a motor mounted on the housing, a drive gear mounted on the shaft of the motor, a drive wheel rotatably fitted inside the housing, and a transmission gear. The drive gear meshes with the drive wheel through the transmission gear. The drive wheel is provided with a rotating orifice. Two drive ends are evenly distributed on the inner sidewall of the rotating orifice, which respectively engage with the two driven latches of the rotating tongue. The upper and lower sides of the rotating orifice are exposed outside the housing through through holes on the housing.

7. The electronic lock that can be unlocked with a key according to claim 1, 2 or 3, characterized in that: The electronic lock head drive assembly mounting base is installed and fixed on the pad on the inner bottom surface of the roller shutter door lock shell. The electronic lock head drive assembly is fitted into the mounting rod on the electronic lock head drive assembly mounting base through the mounting hole, and the mounting rod is locked from the top side of the mounting hole by screws to achieve installation and fixation.

8. The electronic lock that can be unlocked with a key according to claim 1, 2 or 3, characterized in that: The mechanical lock head mounting base is secured by a screw passing through a nail hole one on the roller shutter door lock housing and then locking it with a screw hole one on the mechanical lock head mounting base, thereby fixing the mechanical lock head mounting base to the inner side of the roller shutter door lock housing. The mechanical lock head is fixed to the mechanical lock head mounting base by a screw. The rotation control end of the mechanical lock head is provided with a groove. The rear end of the rotating rod is a flat section rod head. The rear end of the rotating rod is inserted into the groove of the rotation control end. The screw threadedly passes through a screw hole two on the rotation control end and then through a nail hole two at the rear end of the rotating rod to achieve a fixed connection between the rotation control end and the rear end of the rotating rod. The mechanical lock head mounting base is provided with an operating hole for operating the screw threadedly passing through the screw hole two on the rotation control end.

Images