A lock cylinder working of an electronic lock which can be unlocked with a key

Abstract

A lock cylinder working assembly for an electronic lock that can be unlocked with a key. This invention aims to solve the problems of existing technologies, such as non-compact structures, numerous and large components, excessive space occupation within the housing, hindering optimal mechanism layout, cumbersome installation and adjustment, susceptibility to malfunctions, and high price and maintenance costs. Technical solution: Includes a rotating tongue, a rotating shaft, and a pin; the front of the rotating tongue is the rod head driving the lock head gear, the middle is a cylindrical section with a driven latch on the outer side, the driven latch engaging with the electronic lock head; the rear of the rotating tongue has an axial central hole, and the rear sidewall has two inclined grooves and two consecutive circumferential grooves, both extending from the outside of the sidewall to the axial central hole; the pin is tightly fitted onto the rotating shaft, with both ends protruding from both sides of the rotating shaft; the rear section of the rotating shaft connects to the mechanical lock head, the rotating shaft rotates and slides within the axial central hole, and the two ends of the pin slide with the two inclined grooves and the two circumferential grooves respectively.

Description

Technical Field

[0001] This invention relates to the working mechanism of a door lock cylinder, and more particularly to a lock cylinder working mechanism of an electronic lock that can be unlocked with a key. It is suitable for use as a roller shutter door lock cylinder. 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 cylinder mechanisms are complex and have many components, resulting in high prices and making them 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, this solution has drawbacks: the electronic lock head has a non-compact structure with many large components, which takes up too much space inside the roller shutter lock head housing, affecting the optimal arrangement of the working mechanism of the roller shutter lock head. It also makes installation and adjustment more troublesome and prone to operational failures, resulting in low quality, high price and maintenance costs for the roller shutter lock head, thus affecting 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 inside the roller shutter lock head housing, affecting the optimal arrangement of the roller shutter lock head'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 lock cylinder working mechanism for a key-operated electronic lock, which can overcome the shortcomings of existing technologies.

[0005] The technical solution adopted by this invention to solve its technical problem is: a lock cylinder working part of an electronic lock that can be unlocked with a key, characterized in that: it includes a rotating tongue for driving a lock head gear of a roller shutter door, a rotating shaft engaged with the rotating tongue, and a pin engaged with the rotating shaft; wherein the front part of the rotating tongue is a rod head for driving the lock head gear of the roller shutter door, the middle part of the rotating tongue is a cylindrical section, and two driven latches for receiving the drive of the electronic lock head are evenly distributed on the outer side of the middle part, the driven latches are axially slidingly engaged or disengaged with the driving end of the electronic lock head, and the rear part of the rotating tongue has an axially central hole extending inward from the rear end face, and two inclined sliding... The inclined sliding groove extends from the outside of the side wall to the axial center hole. Two circumferential sliding grooves, each connecting to the front end of one of the inclined sliding grooves, are distributed at the junction of the rear and middle sections. These circumferential sliding grooves also extend from the outside of the side wall to the axial center hole. A pin is tightly fitted onto the front radial shaft hole of the rotating shaft, with both ends protruding from both sides of the rotating shaft. The rear section of the rotating shaft is a connecting part for the mechanical lock head. The rotating shaft rotates and slides within the axial center hole of the rotating tongue. The connecting part of the rotating shaft is located outside the axial center hole, and the two ends of the pin slide into the two inclined sliding grooves and the two circumferential sliding grooves, respectively.

[0006] The two inclined grooves 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 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 inclination direction of the inclined grooves.

[0007] The above technical solution can be that when the two ends of the pin are respectively at the junction of the two inclined slides and the two circumferential slides, the lock head of the driving roller shutter is in a locked state.

[0008] The front part of the rotating tongue described in the above technical solution can be a flat cross-section rod segment, which is used to insert and fit into the central drive hole of the lock gear of the rolling shutter door and to slide into the central drive hole.

[0009] The rear part of the rotating tongue described in the above technical solution can be a cylindrical segment with a diameter smaller than the diameter of the middle part of the rotating tongue.

[0010] The driven latch on the middle part of the rotating tongue in the above technical solution can be a concave latch, and the diameter of the bottom of the two driven latches is greater than or equal to the rear outer diameter of the rotating tongue, so as to avoid the electronic lock head being obstructed when the driving end is axially slidingly engaged or disengaged from the driven latch.

[0011] The rear section of the rotating shaft described in the above technical solution can be a flat cross-section rod section, which is provided with a connection hole for connecting to a mechanical lock head.

[0012] 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 is inserted from the outside of an inclined groove of the rotating tongue and tightly fitted into the shaft hole of the pin. Then the two ends of the pin are respectively slidably fitted into the two inclined grooves of the rotating tongue.

[0013] The working principle of the lock cylinder mechanism in the above technical solution is as follows: When the fixed mechanical lock head is not in motion, the rotating shaft does not rotate. The driving end of the fixed electronic lock head can control the rotation of the rotating tongue through the driven latch in the middle of the rotating tongue, thereby driving the lock head gear of the roller shutter to rotate, so as to lock or unlock the lock head of the roller shutter. During this process, the two circumferential grooves of the rotating tongue slide along the ends of the two pins on the rotating shaft, without being interfered with by the stationary rotating shaft. When the electronic lock head malfunctions and the lock head of the roller shutter is in the locked state, the rotating tongue is jammed by the driving end of the electronic lock head and does not rotate. At this point, the key can be inserted to turn the mechanical lock head, first causing the rotating shaft to rotate, causing the ends of the two pins located at the junction of the two inclined slides and the two circumferential slides to slide within the two inclined slides, forcing the rotating tongue to move axially forward, thereby causing the driven end of the driven lock head to slide axially and separate, and the rotating tongue to disengage from the locking of the electronic lock head. At this time, the ends of the two pins are at the rear end of the two inclined slides. Then, the key continues to turn the mechanical lock head in the same direction, driving the rotating tongue to rotate through the ends of the two pins on the rotating shaft, controlling the lock head of the roller shutter to open.

[0014] The beneficial effects of this invention are: a simple yet ingenious lock cylinder working assembly can organically coordinate the non-interference combination of electronic and mechanical lock heads, making the key-operable electronic lock compact in structure, with fewer components and miniaturization, thus occupying less space in the lock head housing of the roller shutter door, achieving the optimal arrangement of the lock head mechanism of the roller shutter door, and also achieving convenient installation and adjustment, high operational reliability. This effectively reduces the price and maintenance cost of key-operable electronic locks, improves the quality of the lock head of the roller shutter door, and makes key-operable electronic locks suitable for widespread application.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective schematic diagram of an embodiment of the present invention, wherein the rotating tongue, rotating shaft and pin are in a separated state.

[0017] Figure 2 yes Figure 1 A three-dimensional diagram showing another angle of the rotating tongue.

[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the pin tightly fitted onto the rotating shaft.

[0019] Figure 4 yes Figure 1 A front view diagram showing the combination of the rotating tongue, rotating shaft, and pin.

[0020] Figure 5 yes Figure 4 A diagram showing the view from the right.

[0021] In the diagram: 1. Rotating tongue; 2. Rotating shaft; 3. Pin; 4. Front part; 5. Middle part; 6. Driven bayonet; 7. Rear part; 8. Axial center hole; 9. Inclined slide groove; 10. Circumferential slide groove; 11. Front radial shaft hole; 12. End; 13. Connecting part; 14. Rear end; 15. Continuation point; 16. Connecting hole. Detailed Implementation

[0022] Reference Figures 1-5 The lock cylinder working assembly of this key-operated electronic lock is characterized by comprising: a rotating tongue 1 for driving a lock head gear of a roller shutter door, a rotating shaft 2 fitted on the rotating tongue 1, and a pin 3 fitted on the rotating shaft 2; wherein the front part 4 of the rotating tongue 1 is a rod head for driving the lock head gear of the roller shutter door, the middle part 5 of the rotating tongue 1 is a cylindrical section, and two driven latches 6 are evenly distributed on the outer side of the middle part 5, which are driven by the electronic lock head. The driven latches 6 are axially slidingly engaged or disengaged with the driving end of the electronic lock head. The rear part 7 of the rotating tongue 1 has an axially central hole 8 extending inward from the rear end face, and two inclined grooves 9 are evenly distributed on the side wall of the rear part 7, which penetrate from the outside of the side wall. To the axial center hole 8, two circumferential grooves 10 are evenly distributed on the rear part 7 where it connects with the middle part 5, each connecting to the front end of one of the two inclined grooves 9. The circumferential grooves 10 also extend from the outside of the side wall to the axial center hole 8. The pin 3 is tightly fitted on the front radial shaft hole 11 of the rotating shaft 2, and the two ends 12 of the pin 3 protrude from both sides of the rotating shaft 2. The rear section of the rotating shaft 2 is a connecting part 13 for connecting the mechanical lock head. The rotating shaft 2 rotates and slides on the axial center hole 8 of the rotating tongue 1. The connecting part 13 of the rotating shaft 2 is outside the axial center hole 8. The two ends 12 of the pin 3 slide with the two inclined grooves 9 and the two circumferential grooves 10, respectively.

[0023] In addition, the two inclined grooves 9 of the rotating tongue 1 are inclined in the same direction of rotation and at the same angle. The rear ends 14 of the two inclined grooves 9 are respectively located on the rear wall of the rotating tongue 1. The two circumferential grooves 10 are respectively connected to the front ends of the two inclined grooves 9 and are connected along the inclined direction of the inclined grooves 9.

[0024] When the two ends 12 of the pin 3 are respectively located at the junction 15 of the two inclined slide grooves 9 and the two circumferential slide grooves 10, the lock of the driving roller shutter is in the locked state.

[0025] The front part 4 of the rotating tongue 1 is a flat-section rod segment, which is used to insert and fit into the central drive hole of the lock gear of the rolling shutter door and to slide into the central drive hole.

[0026] The rear part 7 of the rotating tongue 1 is a cylindrical segment with a diameter smaller than that of the middle part 5 of the rotating tongue 1.

[0027] The driven latch 6 on the middle part 5 of the rotating tongue 1 is a concave latch, and the diameter of the bottom of the two driven latches 6 is greater than or equal to the outer diameter of the rear part 7 of the rotating tongue 1, so as to avoid the electronic lock head being obstructed when it slides or separates from the driven latch 6 in the axial direction.

[0028] The connecting part 13 of the rotating shaft 2 is a flat cross-section rod segment, which is provided with a connecting hole 15 for connecting to the mechanical lock head.

[0029] The rotating shaft 2 is fitted into the axial center hole 8 of the rotating tongue 1 before the pin 3 is tightly fitted. Then the pin 3 is inserted from the outside of an inclined groove 9 of the rotating tongue 1 and tightly fitted on the front radial shaft hole 11 of the rotating shaft 2. Then the two ends 12 of the pin 3 are slidably fitted on the two inclined grooves 9 of the rotating tongue 1.

[0030] When using it, Figure 4 In this state, the front part 4 of the rotating tongue 1 is inserted into the central drive hole of the lock gear of the roller shutter door; the middle part 5 of the rotating tongue 1 is slidably engaged with the drive hole of the fixed electronic lock head; the two protruding drive ends on the inner peripheral wall of the drive hole are respectively axially slidably engaged with the two driven latches 6 on the middle part 5 of the rotating tongue 1; the connecting part 13 of the rotating shaft 2 is connected to the drive end of the fixed mechanical lock head.

[0031] Its working principle is as follows: When the fixed mechanical lock head is not in motion, the rotating shaft 2 does not rotate. The driving end of the fixed electronic lock head controls the rotation of the rotating tongue 1 through the driven latch 6 in the middle part 5 of the rotating tongue 1, which in turn drives the lock head gear of the roller shutter to rotate, thereby realizing the locking or unlocking of the lock head of the roller shutter. During this process, the two circumferential sliding grooves 10 of the rotating tongue 1 slide along the ends 12 of the two pins 3 on the rotating shaft 2, without being interfered with by the stationary rotating shaft 2. When the electronic lock head malfunctions and the lock head of the roller shutter is in the locked state, the rotating tongue 1 is jammed by the driving end of the electronic lock head and does not rotate. At this time, a key can be inserted to turn the mechanical lock head, causing the rotating shaft 2 to rotate. The ends 12 of the two pins 3 at the junction 15 of the two inclined sliding grooves 9 and the two circumferential sliding grooves 10 are locked along the rotating shaft 2. The sliding within the two inclined slide grooves 9 forces the rotating tongue 1 to move axially forward, thereby causing the driven end of the driven latch 6 to slide axially away from the electronic lock head. The rotating tongue 1 then disengages from the electronic lock head. At this time, the ends 12 of the two pins 3 are at the rear end 14 of the two inclined slide grooves 9. Then, the key continues to rotate the mechanical lock head in the same direction, driving the rotating tongue 1 to rotate through the ends 12 of the two pins 3 on the rotating shaft 2, controlling the lock head of the roller shutter to open. After the lock head of the roller shutter is opened, the faulty electronic lock head, its battery, and circuit can be inspected and repaired. At the same time, by rotating the mechanical lock head with the key, the ends 12 of the two pins 3 on the rotating shaft 2 return to the junction 15 of the two inclined slide grooves 9 and the two circumferential slide grooves 10, so that the repaired electronic lock head can resume controlling the locking or unlocking of the roller shutter.

Claims

1. A lock cylinder working part of an electronic lock that can be unlocked with a key, characterized in that: The device includes a rotating tongue for driving a lock gear of a roller shutter door, a rotating shaft fitted on the rotating tongue, and a pin fitted on the rotating shaft. The front part of the rotating tongue is a rod head for driving the lock gear of the roller shutter door. The middle part of the rotating tongue is a cylindrical section with two evenly distributed driven latches on the outer side of the middle section, which are axially slidingly engaged or disengaged from the driving end of the electronic lock head. The rear part of the rotating tongue has an axially extending central hole extending inward from the rear end face. Two inclined sliding grooves are evenly distributed on the sidewall of the rear part, extending from the outside of the sidewall to the axially extending central hole. The central hole has two circumferential grooves distributed at the junction of the rear and middle parts, which are respectively connected to the front ends of the two inclined grooves. The circumferential grooves also extend from the outside of the side wall to the axial central hole. The pin is tightly fitted on the front radial shaft hole of the rotating shaft, and the two ends of the pin protrude from both sides of the rotating shaft. The rear section of the rotating shaft is a connecting part for connecting the mechanical lock head. The rotating shaft rotates and slides on the axial central hole of the rotating tongue. The connecting part of the rotating shaft is outside the axial central hole. The two ends of the pin slide in contact with the two inclined grooves and the two circumferential grooves, respectively.

2. The lock cylinder working part of the keyable electronic lock according to claim 1, 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.

3. The lock cylinder working part of the keyable electronic lock according to claim 1 or 2, characterized in that: When the two ends of the pin are respectively at the junction of the two inclined slides and the two circumferential slides, the lock of the drive roller shutter is in the locked state.

4. The lock cylinder working part of the keyable electronic lock according to claim 1 or 2, characterized in that: The front part of the rotating tongue is a flat-section rod segment, which is used to insert and fit into the central drive hole of the lock gear of the rolling shutter door and slide into the central drive hole.

5. The lock cylinder working part of the keyable electronic lock according to claim 1 or 2, characterized in that: The rear part of the rotating tongue is a cylindrical segment with a diameter smaller than that of the middle part of the rotating tongue.

6. The lock cylinder working part of the keyable electronic lock according to claim 5, characterized in that: The driven latch on the middle part of the rotating tongue is a concave latch, and the diameter of the bottom of the two driven latches is greater than or equal to the rear outer diameter of the rotating tongue.

7. The lock cylinder working part of the keyable electronic lock according to claim 1 or 2, characterized in that: The rear section of the rotating shaft is a flat-section rod segment with a connection hole for connecting to a mechanical lock head.

8. The lock cylinder working part of the keyable electronic lock according to claim 1 or 2, characterized in that: The rotating shaft is fitted into the axial center hole of the rotating tongue when the pin is not tightly fitted. Then the pin is inserted from the outside of an inclined groove of the rotating tongue and tightly fitted into the shaft hole of the pin. Then the two ends of the pin are respectively slidably fitted into the two inclined grooves of the rotating tongue.

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