A low-energy consumption intelligent lock for a security door

Abstract

The utility model discloses a low energy consumption intelligent lock for security door, including lock body casing, electronic panel and vertical slidable slide cover. The lock body casing is provided with the push rod, the wedge locking structure and the electric contact structure in linkage with the slide cover. The slide cover is pushed to drive the push rod to move up, and the fixed block cooperates with the wedge-shaped clamp block to mechanically lock the push rod in the upper position. The push plate is connected with the electric contact to turn on the power supply of the electronic panel. The user can complete the password or fingerprint operation without continuously holding the slide cover. When the slide cover is continuously pushed and pulled, the sliding block opens the wedge-shaped clamp block under the action of the spring, releases the lock of the push rod, and makes the push rod automatically reset and cut off the power supply of the panel. This structure only relies on mechanical cooperation to realize the short-time power-on and automatic power-off of the panel, significantly reduces the standby power consumption, prolongs the battery life, and the action is reliable.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a low-energy intelligent lock for security doors. Background Technology

[0002] With the development of smart home and IoT technologies, electronic locks and smart locks that use electronic panels for password input, fingerprint recognition, and card verification are widely used in residences, apartments, hotels, and offices. These locks typically use batteries or external power sources to provide continuous standby power to the electronic panel, allowing users to operate them whenever needed.

[0003] However, in existing structures, to ensure the panel is always on or can be woken up at any time, the electronic panel and its control circuits are often in standby mode for extended periods. Even with low-power chips and sleep / wake-up strategies, continuous static current consumption is difficult to avoid. This is especially true in smart locks with multiple features such as wireless communication, fingerprint module standby, and keyboard backlighting, where the overall static power consumption is not low, leading to frequent battery replacements and high maintenance costs for users. To extend battery life, some solutions use capacitive touch wake-up buttons, button wake-up, or proximity sensors to illuminate the electronic panel only when a touch or person is detected. However, these sensors themselves still require continuous power for detection and are prone to false wake-ups in environments with strong light, humidity, or accidental touches, causing the panel to light up frequently and making it difficult to further reduce power consumption.

[0004] Therefore, without significantly increasing the number of components and costs, or complicating the control circuit, how to further reduce the standby power consumption of electronic locks and extend battery life has become an urgent technological problem to be solved. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing electronic locks have high standby power consumption and insufficient battery life without adding complex circuits and extra buttons.

[0006] The technical solution adopted by this utility model is as follows: A low-energy intelligent lock for security doors includes a lock body housing fixedly installed on the door body, an electronic panel disposed on the outside of the lock body housing, and a sliding cover covering the electronic panel and capable of sliding vertically. The lock body housing contains a push rod that is linked to the sliding cover. The up-and-down sliding of the sliding cover relative to the lock body housing drives the push rod to reciprocate vertically. The housing contains a locking structure that cooperates with the push rod to mechanically lock the push rod when the sliding cover is pushed up to a predetermined position, and to release the lock during subsequent operation of the sliding cover. The housing also contains an electrical contact structure linked to the push rod. The electrical contact structure includes a push plate disposed on the push rod and electrical contacts on a mounting plate that cooperate with electrical contacts on the push plate. The electrical contact structure is electrically connected to the circuitry of the electronic panel.

[0007] Preferably, a fixed block and a sliding block are sequentially provided on the push rod along the axial direction. The fixed block is fixedly connected to the push rod, and the sliding block is slidably engaged with the push rod. A first spring is sleeved on the outer periphery of the push rod below the sliding block. One end of the first spring abuts against the sliding block, and the other end abuts against the limiting piece fixed on the push rod, so as to elastically push the sliding block towards the fixed block when no external force is applied.

[0008] Preferably, the locking structure includes a pair of wedge-shaped clamping blocks symmetrically arranged on both sides of the push rod and a second spring member that applies an elastic preload to the wedge-shaped clamping blocks. The outer periphery of the fixed block and the sliding block are respectively formed with wedge-shaped locking surfaces for engaging with the inner inclined surfaces of the wedge-shaped clamping blocks. Under the action of the second spring member, the wedge-shaped clamping blocks are clamped in a pre-position towards the push rod, so that when the fixed block moves upward, it engages with its wedge-shaped locking surfaces to lock the push rod in the upper position, and when the sliding block moves up and down, it engages with its wedge-shaped locking surfaces to push open the wedge-shaped clamping blocks, thereby releasing the lock on the fixed block.

[0009] Furthermore, the wedge-shaped clamp is connected to the corresponding slide via a plug-in post. One end of the plug-in post is fixedly connected to the wedge-shaped clamp, and the other end is inserted into the mounting hole on the slide. The second spring is sleeved on the plug-in post and located between the wedge-shaped clamp and the slide. The wedge-shaped clamp has a flange along its moving direction, and the slide has a corresponding groove for accommodating the flange, thereby guiding the moving direction of the wedge-shaped clamp and preventing the wedge-shaped clamp from wobbling in a direction perpendicular to the moving direction.

[0010] Preferably, a push plate is fixedly connected to the push rod and located below the mounting plate. The push plate is provided with electrical contacts, and the mounting plate is equipped with electrical contacts opposite to the electrical contacts via spring clips. The spring clips are used to spring the electrical contacts on the mounting plate away from the electrical contacts on the push plate when the push rod is in the lower position, and to press the push plate against the push rod when the push rod moves to the upper position, so that the electrical contacts on the mounting plate and the electrical contacts on the push plate make reliable contact, thereby closing the circuit for powering the electronic panel.

[0011] Furthermore, the edge of the sliding cover is slidably fitted into a vertically extending groove provided on the lock body housing, and a base is integrally formed at the lower end of the sliding cover, with the lower end of the push rod fixedly connected to the base; a fixed seat is provided inside the lock body housing, and the push rod passes through and slidably fits into the fixed seat to guide and support the vertical reciprocating movement of the push rod.

[0012] Beneficial Effects: This utility model organically combines the vertical linkage between the sliding cover and the push rod, the wedge-shaped self-locking and unlocking mechanism of the push rod and the electrical contact structure of the push plate and the electrical contacts. This allows the push rod to move upwards and be mechanically locked by the wedge-shaped clamping block with a single push of the sliding cover, thus powering the electronic panel. Users can complete fingerprint or password operations quickly without needing to continuously hold the sliding cover, making it convenient and easy. During further pushing and pulling of the sliding cover, the sliding block overcomes the elasticity of the first spring, opening the wedge-shaped clamping block and automatically releasing the lock on the fixed block and push rod. The push rod then resets under its own weight and elasticity, cutting off the power supply to the panel. This achieves low-energy control of the electronic panel, significantly reducing standby power consumption and extending battery life. Furthermore, the entire process relies on a mechanical structure for position holding and unlocking, eliminating the need for additional buttons and complex circuits. The structure is simple, the operation is reliable, and the lifespan is long. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance structure of a low-energy smart lock for security doors.

[0014] Figure 2 This is a schematic diagram of the internal structure of a low-energy smart lock for security doors.

[0015] Figure 3 for Figure 2 A magnified schematic diagram of the internal A-zone structure of a low-energy smart lock used in security doors.

[0016] Figure 4 for Figure 2 An enlarged schematic diagram of the B-section structure of a low-energy smart lock for security doors.

[0017] Attached icon numbers: 1. Lock body housing; 11. Electronic panel; 12. Sliding cover; 13. Slide groove; 2. Push rod; 21. Fixing block; 22. Sliding block; 23. First spring component; 24. Limiting piece; 3. Locking structure; 31. Wedge-shaped clamping block; 32. Second spring component; 33. Groove; 34. Insertion post; 35. Slide seat; 4. Push plate; 41. Electrical contact; 5. Mounting plate; 51. Spring piece; 6. Base; 7. Fixing seat. Detailed Implementation

[0018] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application.

[0019] With the development of smart home and IoT technologies, electronic locks using electronic panels for password input, fingerprint recognition, and card verification are widely used in residences, apartments, hotels, and offices. These locks typically use batteries or external power sources to provide standby power for the electronic panel, allowing users to operate it at any time. However, to ensure the panel can be woken up at any time, the electronic panel and control circuitry usually remain in standby or detection mode for extended periods. Even with low-power designs, there is still continuous static current consumption, leading to frequent battery replacements. Some solutions wake the panel via touch keys, buttons, or sensors, but these components themselves also require continuous power and are susceptible to accidental touches and environmental interference, making it difficult to achieve even lower power consumption.

[0020] like Figures 1 to 4 As shown, this embodiment provides a low-energy electronic lock, including a lock body housing 1 fixedly installed on the outside of the door. An electronic panel 11 is disposed on the outside of the lock body housing 1, and a sliding cover 12 that can slide back and forth in the vertical direction covers the outside of the electronic panel 11. When the sliding cover 12 is in the lower position, it covers and blocks the electronic panel 11; when it is in the upper position, it exposes the button area or recognition area for user operation. A pair of opposing sliding grooves 13 are formed on the lock body housing 1 along the movement direction of the sliding cover 12. The sliding grooves 13 extend in the vertical direction, and the edge of the sliding cover 12 slides within the sliding grooves 13, achieving smooth up and down sliding under their guidance. A base 6 is integrally formed at the lower end of the sliding cover 12, extending inward into the lock body housing 1, serving as a force-transmitting component for transmitting the movement of the sliding cover 12.

[0021] The lock body housing 1 contains a push rod 2 that is linked to the sliding cover 12. The push rod 2 is arranged vertically, and its lower end is fixedly connected to the base 6, so that the sliding cover 12 can move up and down in the sliding groove 13, which can drive the push rod 2 to move back and forth synchronously through the base 6. The lock body housing 1 contains a fixed seat 7, which is fixed to the housing 1. The push rod 2 passes through and slides in the hole of the fixed seat 7, and can only move up and down in the vertical direction under the guidance of the fixed seat 7, so as to avoid shaking and swaying.

[0022] like Figure 2As shown, a fixed block 21 and a sliding block 22 are sequentially arranged axially in the upper middle region of the push rod 2. The fixed block 21 is fixedly connected to the push rod 2 and moves up and down with the push rod 2; the sliding block 22 is slidably engaged with the push rod 2 and can move relative to it axially around the outer periphery of the push rod 2. A first spring member 23 is sleeved below the sliding block 22 on the outer periphery of the push rod 2. One end of the first spring member 23 abuts against the lower end face of the sliding block 22, and the other end abuts against the limiting piece 24 fixed on the push rod 2. The limiting piece 24 is used to limit the downward movement limit of the sliding block 22, and under the elastic force of the first spring member 23, it elastically pushes the sliding block 22 towards the fixed block 21, so that the sliding block 22 approaches or adheres to the fixed block 21 in a stationary state. The outer periphery of the fixed block 21 and the sliding block 22 is formed with a wedge-shaped locking surface for engaging with the inner inclined surface of the wedge-shaped clamping block 31 in the locking structure 3. The outer dimension of the sliding block 22 is slightly larger than that of the fixed block 21, so that the fixed block 21 or the sliding block 22 can engage with the wedge-shaped clamping block 31 respectively in different working stages.

[0023] like Figure 2 and Figure 3 As shown, a locking structure 3 is provided in the middle region of the push rod 2 inside the lock body housing 1. The locking structure 3 is used to mechanically lock the push rod 2 when it is pushed up to a predetermined position, and automatically release the lock through the cooperation of the sliding block 22 and the wedge-shaped clamping block 31 during the user's continued operation of the sliding cover 12. This achieves power-on locking with one push of the sliding cover 12 and automatic power-off unlocking with subsequent movement. The locking structure 3 includes a pair of wedge-shaped clamping blocks 31 symmetrically arranged on both sides of the push rod 2, and a second spring member 32 that applies an elastic preload to the wedge-shaped clamping blocks 31. The side of the wedge-shaped clamping block 31 closest to the push rod 2 is machined with an inner inclined surface facing the push rod 2, which cooperates with the wedge-shaped locking surface on the outer periphery of the fixed block 21 and the sliding block 22 to form a wedge-shaped locking structure. One end of the second spring member 32 abuts against the wedge-shaped clamping block 31, and the other end abuts against the supporting member, so that the wedge-shaped clamping block 31 always moves towards the push rod 2 under its elastic force, forming a clamping preload on the push rod 2.

[0024] To ensure smooth and reliable movement of the wedge-shaped clamping blocks 31, each wedge-shaped clamping block 31 is connected to a corresponding slide block 35 via a plug-in pin 34. One end of the plug-in pin 34 is fixed to the wedge-shaped clamping block 31, and the other end is inserted into a mounting hole on the slide block 35. A second spring 32 is sleeved on the plug-in pin 34 and located between the wedge-shaped clamping block 31 and the slide block 35, thereby applying an elastic preload to the wedge-shaped clamping block 31 in a vertical plane. A flange is provided on the wedge-shaped clamping block 31 along its moving direction, and a corresponding groove 33 is provided on the slide block 35 to accommodate the flange. The flange slides within the groove 33, guiding the moving direction of the wedge-shaped clamping block 31 and preventing it from wobbling perpendicular to the moving direction, thus improving the stability of the locking structure 3. The slide block 35 is fixed inside the lock body housing 1 and can be connected to the housing 1 by screws, snaps, or integral molding, thus fixing the locking structure 3 in its position inside the lock body.

[0025] Above the fixed block 21, a push plate 4 is fixedly connected to the push rod 2. The push plate 4 extends horizontally, and a portion of it is fixedly connected to the push rod 2 for synchronous movement with the lifting and lowering motion of the push rod 2. An electrical contact 41 is provided on the push plate 4. An mounting plate 5 is fixedly installed above the push plate 4 inside the lock body housing 1. An electrical contact opposite to the electrical contact 41 is installed on the mounting plate 5 via a spring piece 51. The electrical contact is connected in series with the power supply circuit of the electronic panel 11. One end of the spring piece 51 is fixed to the mounting plate 5 or an insulating bracket inside the housing, and the other end is connected to the electrical contact and extends toward the push plate 4. When no external force is applied, the spring piece 51 pushes the electrical contact on the mounting plate 5 away from the electrical contact 41, thus disconnecting the power supply circuit of the electronic panel 11. When push rod 2 moves upward and push plate 4 presses against spring 51, the electrical contacts on mounting plate 5 are pushed toward electrical contact 41 and make reliable contact with them, and electronic panel 11 receives power. After push rod 2 moves downward, push plate 4 leaves spring 51, spring 51 causes electrical contacts on mounting plate 5 to spring back and separate from electrical contact 41, and electronic panel 11 automatically cuts off power.

[0026] In this embodiment, the lower end of the push rod 2 is fixedly connected to the base 6 of the sliding cover 12. When the sliding cover 12 slides up and down in the slide groove 13, the base 6 directly transmits the movement of the sliding cover 12 to the push rod 2, causing the push rod 2 to reciprocate in the vertical direction under the guidance of the fixed seat 7. The lock body housing 1, the sliding cover 12, the slide groove 13, and the fixed seat 7 together constitute a guide support system, which makes the sliding cover 12, the push rod 2, and other components such as the fixed block 21, the sliding block 22, and the push plate 4 move smoothly during operation, reducing jamming and wear.

[0027] The working process of this embodiment is as follows: When the electronic lock is in standby mode, the sliding cover 12 is located at the lower end of the slide groove 13 under its own weight or the action of the return spring. The base 6 and the push rod 2 are in the lower position. The fixed block 21 and the sliding block 22 are both located below the clamping area of ​​the wedge-shaped clamping block 31. Under the action of the second spring 32, the wedge-shaped clamping blocks 31 move towards each other towards the push rod 2, but have not yet contacted the fixed block 21 or the sliding block 22. The push plate 4 is located below the mounting plate 5. There is a gap between the electrical contact 41 and the electrical contact on the mounting plate 5. The electronic panel 11 is in the power-off state. At this time, the power consumption of the entire lock is extremely low, and only a small number of basic circuits are in standby mode.

[0028] When the user needs to operate the electronic panel 11 to unlock it, they push the sliding cover 12 vertically upwards by hand. Guided by the slide groove 13, the sliding cover 12 moves upwards, causing the push rod 2 to move upwards synchronously via the base 6. When the wedge-shaped locking surface of the fixing block 21 enters the clamping area between the two wedge-shaped clamping blocks 31, under the elastic force of the second spring 32, the inner inclined surface of the wedge-shaped clamping block 31 and the wedge-shaped locking surface of the fixing block 21 press against each other, generating a radial clamping force on the fixing block 21 and locking the push rod 2 in the upper position. At this time, even if the user releases their hand, the push rod 2 will not fall under its own weight; the sliding cover 12 remains in the upper position with the push rod 2. The user does not need to continuously lift the sliding cover 12 to keep the electronic panel 11 exposed, making the operation easier and more convenient.

[0029] While the fixing block 21 is locked, the upward movement of the push rod 2 also drives the push plate 4 to move upward. When the push plate 4 presses against the spring piece 51 below the mounting plate 5, the electrical contacts on the mounting plate 5 are pushed towards the electrical contacts 41 and make reliable contact with them. The electronic panel 11 receives power, and the button area, display screen or fingerprint recognition module is activated. The user can directly complete the password input or fingerprint recognition on the panel.

[0030] After the push rod 2 is locked in the upper position by the engagement of the fixing block 21 and the wedge-shaped clamping block 31, if the user continues to push the sliding cover 12 upward, since the push rod 2 is already locked, it will no longer move upward. The upward force applied by the sliding cover 12 and the base 6 is transmitted to the sliding block 22 through the push rod 2, causing the sliding block 22 to continue sliding upward along the push rod 2 while overcoming the elastic force of the first spring 23. After the sliding block 22 moves upward, its wedge-shaped locking surface gradually enters the clamping area of ​​the wedge-shaped clamping block 31. With the outer contour of the sliding block 22 slightly larger than that of the fixing block 21, the wedge-shaped clamping block 31 and the sliding block 22 form a new wedge-shaped engagement. The sliding block 22 is in the ready-to-unlock position, while the fixing block 21 is still in the clamped state, thereby ensuring that the position of the push rod 2 is stable during the power-on of the electronic panel 11.

[0031] After the user completes the password or fingerprint operation on the electronic panel 11, the sliding cover 12 can be pulled down to restore the shielded and power-off state. At this time, the sliding cover 12 and the base 6 drive the push rod 2 to move downwards. However, since the fixed block 21 is still locked by the wedge-shaped clamp 31, the push rod 2 cannot immediately descend. The downward force on the sliding cover 12 is transmitted to the sliding block 22 through the structure, causing the sliding block 22 to move downwards relative to the push rod 2. The wedge-shaped locking surface of the sliding block 22 slides in contact with the inner inclined surface of the wedge-shaped clamp 31. Under the guidance of the wedge-shaped surface, on the one hand, the wedge-shaped clamp 31 is pushed to overcome the elastic force of the second spring 32 and move away from the push rod 2. The second spring 32 is compressed, and the two wedge-shaped clamps 31 gradually open, releasing the clamping of the fixed block 21. On the other hand, under the restoring force of the first spring 23, the sliding block 22 is pushed towards the limiting piece 24 and gradually exits the clamping area of ​​the wedge-shaped clamp 31.

[0032] When the wedge-shaped clamping block 31 is pushed open by the sliding block 22 to release the fixing block 21, the fixing block 21 loses its locking constraint and moves downward as a whole with the push rod 2 under the combined action of its own weight and the downward operating force of the sliding cover 12, disengaging from the clamping area of ​​the wedge-shaped clamping block 31. The locking structure 3 thus automatically unlocks, the push rod 2 returns from the upper position to the lower position, the push plate 4 moves down accordingly, and the electrical contacts on the mounting plate 5 rebound under the elastic force of the spring piece 51 and leave the electrical contacts 41, the power supply circuit of the electronic panel 11 is disconnected, and the electronic panel 11 exits the working state. After the push rod 2 returns to the lower end, the sliding cover 12 slides down naturally along the slide groove 13 to the lower position under its own weight or the action of the additional return spring, covering the electronic panel 11 again, and the electronic lock returns to the initial low-power standby state.

[0033] This embodiment utilizes the simple push-pull action of the sliding cover 12 to achieve two-stage position control of the push rod 2 and power-on and power-off of the electronic panel 11: When pushed up for the first time, the fixing block 21 and the wedge-shaped clamping block 31 achieve a wedge-shaped self-locking engagement, reliably locking the push rod 2 in the upper position. At the same time, the push plate 4 presses the electrical contacts to power on the electronic panel 11, and the user can complete the unlocking operation without continuously lifting the sliding cover 12; During the continued push-pull process, through the cooperation of the sliding block 22, the first spring 23 and the wedge-shaped clamping block 31, the wedge-shaped clamping block 31 is pushed open and the locking of the fixing block 21 is released. The push rod 2 automatically moves down and disconnects the power supply. The entire process does not rely on an additional wake-up button or sensor, achieving low-energy control of the electronic panel 11.

[0034] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A low-energy smart lock for a security door, comprising a lock body housing (1) fixedly mounted on the door body, an electronic panel (11) disposed on the outside of the lock body housing (1), and a sliding cover (12) covering the electronic panel (11) and slidable in a vertical direction, characterized in that: The lock body housing (1) is provided with a push rod (2) that is linked to the sliding cover (12). The sliding cover (12) can drive the push rod (2) to move back and forth in the vertical direction by sliding up and down relative to the lock body housing (1). The lock body housing (1) is provided with a locking structure (3), which cooperates with the push rod (2) to mechanically lock the push rod (2) when the sliding cover (12) is pushed up to a predetermined position, and release the lock on the push rod (2) during the subsequent operation of the sliding cover (12); The lock body housing (1) is also provided with an electrical contact structure that is linked to the push rod (2). The electrical contact structure includes a push plate (4) disposed on the push rod (2) and an electrical contact on the mounting plate (5) that cooperates with the electrical contacts on the push plate (4). The electrical contact structure is electrically connected to the circuit of the electronic panel (11).

2. The low-energy smart lock for security doors according to claim 1, characterized in that, The push rod (2) is provided with a fixed block (21) and a sliding block (22) in sequence along the axial direction. The fixed block (21) is fixedly connected to the push rod (2), and the sliding block (22) is slidably engaged with the push rod (2). The push rod (2) has a first spring (23) sleeved on its outer periphery below the sliding block (22). One end of the first spring (23) abuts against the sliding block (22), and the other end abuts against the limiting piece (24) fixed on the push rod (2), so that the sliding block (22) is elastically pushed against the fixed block (21) when there is no external force.

3. The low-energy smart lock for security doors according to claim 2, characterized in that, The locking structure (3) includes a pair of wedge-shaped clamps (31) symmetrically arranged on both sides of the push rod (2) and a second spring (32) that applies an elastic preload to the wedge-shaped clamps (31). The outer periphery of the fixed block (21) and the sliding block (22) are respectively formed with wedge-shaped locking surfaces for engaging with the inner inclined surface of the wedge-shaped clamps (31). The wedge-shaped clamps (31) are clamped in the direction of the push rod (2) under the action of the second spring (32) so that when the fixed block (21) moves upward, it engages with its wedge-shaped locking surface to lock the push rod (2) in the upper position, and when the sliding block (22) moves up and down, it engages with its wedge-shaped locking surface to push open the wedge-shaped clamps (31) and release the locking of the fixed block (21).

4. The low-energy intelligent lock for security doors according to claim 3, characterized in that, The wedge-shaped clamp (31) is connected to the corresponding slide (35) via a plug (34). One end of the plug (34) is fixedly connected to the wedge-shaped clamp (31), and the other end is inserted into the mounting hole on the slide (35). The second spring (32) is sleeved on the plug (34) and located between the wedge-shaped clamp (31) and the slide (35). The wedge-shaped clamp (31) has a flange along its moving direction, and the slide (35) has a corresponding groove (33) for accommodating the flange.

5. The low-energy smart lock for security doors according to claim 1, characterized in that, The push plate (4) is fixedly connected to the push rod (2) and located below the mounting plate (5). The push plate (4) is provided with an electrical contact (41). The mounting plate (5) is provided with an electrical contact that is opposite to the electrical contact (41) by means of a spring piece (51). The spring piece (51) is used to spring the electrical contact on the mounting plate (5) away from the electrical contact (41) when the push rod (2) is in the lower position. When the push rod (2) moves to the upper position, it is pressed by the push plate (4) so ​​that the electrical contact on the mounting plate (5) makes reliable contact with the electrical contact (41).

6. The low-energy smart lock for security doors according to claim 1, characterized in that, The edge of the sliding cover (12) is slidably fitted into a vertically extending groove (13) provided on the lock body housing (1). The lower end of the sliding cover (12) is integrally formed with a base (6), and the lower end of the push rod (2) is fixedly connected to the base (6). A fixed seat (7) is provided inside the lock body housing (1), and the push rod (2) passes through and is slidably fitted into the fixed seat (7) to guide and support the vertical reciprocating motion of the push rod (2).

Images