High-strength door lock capable of automatically closing door

Abstract

The invention relates to the field of door locks, in particular to a high-strength door lock capable of automatically closing a door. According to the high-strength door lock capable of automatically closing the door, after a user leaves a swing door, the main lock tongue and the reinforcing lock tongue impact the diamagnetic lining under inertia force along with the door, and at the moment, the electromagnet component used by the first magnet generates strong magnetic attraction force with the movable iron block and the second magnet in sequence; the main lock tongue and the reinforcing lock tongue are pulled to be locked into the diamagnetic lining to complete automatic door closing action, when a control switch on the battery module is rotated, an electromagnetic pole generated by the first magnet is changed, it can be guaranteed that the door lock cannot be easily locked into the diamagnetic lining under the action of external force, and a door is kept in an open state; in addition, a user can open and close the door without frequently using a key, meanwhile, the function of automatically closing the door is reserved, and the technical problems that when an automatic door closer is used for automatically closing the door, the door cannot be normally closed, and potential safety hazards of hurting surrounding people are caused are solved.

Description

Technical Field

[0001] This invention relates to the field of door locks, and more particularly to a high-strength door lock that automatically closes. Background Technology

[0002] When people rush out the door, they often rely on slamming the door shut. This action involves using the momentum of the arm to quickly swing the door towards the frame, causing the latch to spring back into its inner position under the impact. However, if the slamming force is weak, the latch may not return properly, resulting in the door not locking properly. This often leads to doors not closing completely when people are in a hurry. Current technology adds automatic door closers to achieve automatic closing, but these rely on the spring's rebound force to close the door. When the door is not open at a large angle, the spring's rebound force is also small, resulting in the door not closing properly. Conversely, when the door is open at a large angle, the spring's rebound force is large. If the door is not held firmly, the spring may cause the door to spring back, potentially injuring or trapping people standing around the door frame, thus posing a significant safety hazard. Summary of the Invention

[0003] In order to overcome the shortcomings of using automatic door closers, such as the inability to close the door properly and the safety hazards of injuring people around them, this invention provides a high-strength door lock with automatic closing mechanism.

[0004] Technical Solution: A high-strength door lock with automatic closing mechanism, comprising a housing, a cover plate, an antimagnetic liner, a lock shell, a lock body, a handle, a push rod, a movable rod, an outer pressure spring, a main bolt, a push plate, an antimagnetic metal block, a first magnet, and a second magnet; a cover plate is fixedly attached to the housing; a lock shell is installed inside the housing; a lock body is installed inside the lock shell; a handle is fixedly attached to the front and rear sides of the lock body; a push rod is fixedly attached to the middle of the lock body; a movable rod is slidably connected inside the housing; the movable rod and the housing are jointly fixedly connected. It has an external compression spring; a main locking tongue is fixedly connected to the movable rod; the main locking tongue is slidably connected to the housing; a push plate is fixedly connected to the movable rod; a push rod is in close contact with the push plate; an antimagnetic metal block is fixedly connected to the housing, and the antimagnetic metal block is located below the main locking tongue; a first magnet is installed on the antimagnetic metal block; an antimagnetic liner is provided on one side of the housing; a locking groove structure is opened on the antimagnetic liner; a notch structure is opened on the antimagnetic liner to allow the antimagnetic metal block to enter and exit; a second magnet corresponding to the first magnet is installed on the front side of the antimagnetic liner.

[0005] Furthermore, a reinforcing block is slidably connected inside the housing; a reinforcing latch is fixedly connected to the reinforcing block; the reinforcing latch is slidably connected to the housing; and the reinforcing latch is fixedly connected to the main latch.

[0006] Furthermore, both the main bolt and the reinforcing bolt are made of anti-theft reinforced steel alloy material.

[0007] Furthermore, the first magnet uses an electromagnet component; a battery module that supplies power to the first magnet is installed inside the housing.

[0008] Furthermore, a control switch for controlling the direction of the magnetic poles of the first magnet is installed on the battery module, and the control switch protrudes forward from the cover plate.

[0009] Furthermore, a distance sensor is installed on the antimagnetic metal block.

[0010] Furthermore, a spring damper is installed on the antimagnetic metal block.

[0011] Furthermore, a buffer pad is fixed to the antimagnetic metal block.

[0012] Furthermore, a movable iron block is slidably connected inside the second magnet; an internal pressure spring is fixedly connected between the movable iron block and the antimagnetic liner.

[0013] Furthermore, a C-shaped slide rail structure is provided on the cover plate; a rotating locking block for locking the push plate is slidably connected to the C-shaped slide rail of the cover plate; a knob is fixedly connected to the rotating locking block.

[0014] Beneficial Effects: This invention provides a high-strength door lock with automatic closing. After the user leaves, the main bolt and reinforced bolt follow the door and impact the antimagnetic liner under inertial force. At this time, the electromagnet component of the first magnet generates a strong magnetic attraction with the movable iron block and the second magnet, pulling the main bolt and reinforced bolt into the antimagnetic liner to complete the automatic closing action. When the control switch on the battery module is rotated, the electromagnetic poles generated by the first magnet are changed, ensuring that the door lock will not easily lock into the antimagnetic liner under external force, keeping the door in the open state. After the lock body is unlocked, rotating the knob causes the rotating block to lock the push plate. At this time, the user can open and close the door without frequently using the key, while retaining the automatic closing function. This overcomes the technical problems of automatic door closers failing to close properly and causing safety hazards such as injury to surrounding people. The door lock alone can achieve automatic closing during manual closing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the cover plate structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the housing of the present invention; Figure 4 This is a three-dimensional structural diagram of the movable rod of the present invention; Figure 5 This is a three-dimensional structural diagram of the antimagnetic metal block of the present invention; Figure 6 This is a three-dimensional structural diagram of the antimagnetic liner of the present invention; Figure 7 This is an exploded view of the three-dimensional structure of the second magnet, the movable iron block, and the internal compression spring of the present invention. Figure 8 This is a three-dimensional structural diagram of the cover plate of the present invention.

[0016] Reference numerals: 11-Housing, 12-Cover plate, 1201-C-shaped slide rail, 13-Antimagnetic liner, 1301-Lock groove, 1302-Notch, 21-Lock case, 22-Lock body, 23-Handle, 24-Push rod, 31-Moving rod, 32-Outer pressure spring, 33-Main bolt, 34-Push plate, 35-Reinforcing block, 36-Reinforcing bolt, 41-Antimagnetic metal block, 42-First magnet, 43-Battery module, 431-Control switch, 44-Distance sensor, 45-Spring damper, 46-Buffer pad, 51-Second magnet, 52-Moving iron block, 53-Inner pressure spring, 61-Rotating block, 62-Knob. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] Example 1: A high-strength door lock that automatically closes, such as Figures 1-8As shown, the lock includes a housing 11, a cover plate 12, an antimagnetic liner 13, a lock shell 21, a lock body 22, a handle 23, a push rod 24, a movable rod 31, an external pressure spring 32, a main bolt 33, a push plate 34, an antimagnetic metal block 41, a first magnet 42, and a second magnet 51. The housing 11 is mounted on the door. The cover plate 12 is fixedly attached to the housing 11. The lock shell 21 is installed inside the housing 11. The lock body 22 is installed inside the lock shell 21, and the lock cylinder of the lock body 22 is rotated by a key. The lock body 22 can be unlocked by the lock housing 21; a handle 23 is fixed to the front and rear sides of the lock body 22; two push rods 24 are fixed to the middle of the lock body 22; a movable rod 31 is slidably connected inside the housing 11; an external pressure spring 32 is fixedly connected between the movable rod 31 and the housing 11; a main bolt 33 is fixedly connected to the movable rod 31; the main bolt 33 is slidably connected to the housing 11; a push plate 34 is fixedly connected to the movable rod 31; both push rods 24 are close to the left side of the push plate 34. A magnetic antimagnetic metal block 41 is fixed to the left side of the housing 11, and the magnetic antimagnetic metal block 41 is located below the main lock tongue 33; a first magnet 42 is installed on the front side of the magnetic antimagnetic metal block 41; a magnetic antimagnetic liner 13 is provided on one side of the housing 11; the magnetic antimagnetic liner 13 is installed inside the door frame; a lock groove 1301 structure is opened on the magnetic antimagnetic liner 13; a notch 1302 structure corresponding to the magnetic antimagnetic metal block 41 is opened on the rear side of the magnetic antimagnetic liner 13, and a groove structure corresponding to the notch 1302 is also opened on the rear side of the door frame where the magnetic antimagnetic liner 13 is installed; a second magnet 51 corresponding to the first magnet 42 is installed on the front side inside the magnetic antimagnetic liner 13; the first magnet 42 uses an electromagnet component, the electromagnet component used by the first magnet 42 is initially in a closed state, and a weak magnetic attraction is generated between the second magnet 51 and the copper core material in the electromagnet component used by the first magnet 42; a battery module 43 that supplies power to the first magnet 42 is installed inside the housing 11.

[0019] like Figure 3 , Figure 6 and Figure 7 As shown, a reinforcing block 35 is slidably connected inside the housing 11; a reinforcing latch 36 is fixedly connected to the reinforcing block 35; the reinforcing latch 36 is slidably connected to the housing 11; the reinforcing latch 36 is fixedly connected to the main latch 33, and both the reinforcing block 35 and the main latch 33 are initially inserted into the lock groove 1301; both the main latch 33 and the reinforcing latch 36 are made of anti-theft reinforced steel alloy material; a movable iron block 52 is slidably connected inside the second magnet 51; an internal compression spring 53 is fixedly connected between the movable iron block 52 and the antimagnetic liner 13, and the first magnet 42 is initially in close contact with the movable iron block 52, so that the internal compression spring 53 is initially in a compressed state.

[0020] like Figure 3As shown, a control switch 431 is installed on the battery module 43, and the control switch 431 protrudes forward from the cover plate 12. Rotating the control switch 431 on the battery module 43 can change the electromagnetic poles generated by the first magnet 42. A distance sensor 44 is installed on the front side of the antimagnetic metal block 41, and the battery module 43 supplies power to the distance sensor 44.

[0021] The steps for using a high-strength door lock that automatically closes are as follows.

[0022] In the initial state, both the main bolt 33 and the reinforced bolt 36 are within the lock groove 1301 of the antimagnetic liner 13. A weak magnetic attraction is generated between the copper core material in the electromagnet component used by the second magnet 51 and the first magnet 42, and the door and door frame are in a closed state. After the user unlocks the lock cylinder component of the lock body 22 with the key, pressing the handle 23 causes the lock body 22 and the push rod 24 to rotate. The push rod 24 pushes the push plate 34, causing the movable rod 31 and its connected main bolt 33 and reinforced bolt 36 to move to the right through the antimagnetic liner 13, allowing the main bolt 33 and reinforced bolt 36 to be retracted into the housing 11. At the same time, the movable rod 31 drives the outer pressure spring 32 to compress. At this time, the main locking tongue 33 and the reinforced locking tongue 36 are not blocked by the antimagnetic liner 13. The user only needs to push the door lightly to overcome the weak magnetic attraction between the second magnet 51 and the first magnet 42 and open the door backward. At the same time, the housing 11 drives the antimagnetic metal block 41 to leave the antimagnetic liner 13 through the notch 1302. At this time, the distance sensor 44 detects that the antimagnetic metal block 41 is in the state of leaving the antimagnetic liner 13. At the same time, the movable iron block 52 is no longer blocked by the first magnet 42. The inner pressure spring 53 pushes the movable iron block 52 to pop out backward along the second magnet 51.

[0023] After the user releases the handle 23, the compressed external pressure spring 32 pushes the movable rod 31 to drive the push plate 34, the main lock tongue 33 and the reinforced lock tongue 36 to move in the opposite direction and reset. At the same time, the push plate 34 pushes the push rod 24 to drive the lock body 22 and the handle 23 to rotate in the opposite direction and reset. The lock body 22 returns to the locked state between itself and the lock shell 21. At this time, the user can pull the key out of the lock cylinder component of the lock body 22.

[0024] After the user slams the door shut, the first magnet 42, under the strong electromagnetic attraction between itself, the movable iron block 52, and the second magnet 51, pulls the housing 11, causing the door to rotate towards the door frame. The housing 11 then moves the main latch 33 and the reinforcing latch 36 towards the lock groove 1301 of the antimagnetic liner 13. The stationary antimagnetic liner 13, through the wedge-shaped inclined structure of the main latch 33 and the reinforcing latch 36, pushes the main latch 33 and the reinforcing latch 36 into the housing 11. At the same time, the movable rod 31 compresses the external pressure spring 32. The first magnet 42 continues to pull the housing 11 under the strong electromagnetic attraction, causing the door and door frame to be in a completely closed state. At this time, the main latch 33 and the reinforcing latch 36 are aligned with the lock groove 1301 of the antimagnetic liner 13. The compressed external pressure spring 32 pushes the movable rod 31 to push the main latch 33 and the reinforcing latch 36 out and insert them into the lock groove 1301 of the antimagnetic liner 13, thus automatically completing the locking action.

[0025] When the user is only temporarily leaving the house, after unlocking the lock cylinder of the lock body 22 with the key, the user opens the door backward through the above steps. After releasing the handle 23 and removing the key, the user can manually turn the control switch 431 on the battery module 43 to change the electromagnetic poles generated by the first magnet 42. After the user leaves the door open, when the outside wind blows the door towards the door frame, the main bolt 33 and the reinforced bolt 36 follow the door and impact the antimagnetic liner 13 under inertial force. At this time, the distance sensor 44 detects that the antimagnetic metal block 41 is approaching again. In the state of the antimagnetic liner 13, the ranging sensor 44 sends an opening signal to the first magnet 42 through the circuit system. The electromagnet component used by the first magnet 42 generates a strong electromagnetic force on the movable iron block 52 and the second magnet 51. Since the electromagnetic poles of the first magnet 42 have changed, the strong electromagnetic force between the first magnet 42 and the second magnet 51 is a strong electromagnetic repulsion force. This strong electromagnetic repulsion force will cause the first magnet 42, the housing 11, and the entire door to bounce away from the antimagnetic liner 13, keeping the door in a closed state with the door frame and not easily affected by external forces, so that users can open the door without using a key when they return from a temporary trip.

[0026] In addition, the lock body 22 inside the lock case 21 can be a one-way lock that opens from the outside and is free from the inside. That is, the door can be opened by pressing the handle 23 directly without unlocking the lock body 22 from the front of the door, while the door can be opened by pressing the handle 23 after unlocking the lock body 22 from the back of the door.

[0027] Example 2, as Figures 1-8As shown, based on the above embodiment 1, two spring dampers 45 are installed on the front side of the antimagnetic metal block 41 in this embodiment; a buffer pad 46 is fixedly connected to the front side of the antimagnetic metal block 41; during the automatic closing process of the first magnet 42 generating strong magnetic attraction force on the movable iron block 52 and the second magnet 51 according to the above steps, the strong magnetic attraction force will pull the antimagnetic metal block 41 to hit the antimagnetic inner liner 13. At this time, the two spring dampers 45 contact the antimagnetic inner liner 13 before the antimagnetic metal block 41, and the spring dampers 45 and the buffer pad 46 work together to absorb most of the impact force generated when the antimagnetic metal block 41 hits the antimagnetic inner liner 13, providing a collision damping effect. At the same time, the buffer pad 46 can also reduce the collision noise generated during the process of the antimagnetic metal block 41 hitting the antimagnetic inner liner 13, realizing silent automatic door closing.

[0028] Example 3, as Figures 1-8 As shown, based on the above embodiment 1, the cover plate 12 of this embodiment is provided with a C-shaped slide rail 1201 structure; a rotating block 61 is slidably connected to the C-shaped slide rail 1201 of the cover plate 12, and the rotating block 61 is initially aligned with the upper right side of the push plate 34; a knob 62 is fixedly connected to the rotating block 61; when the door needs to be opened and closed frequently in a short period of time, after the user unlocks the lock body 22, he first presses the handle 23 to control the push rod 24 to push the push plate 34 and drive the movable rod 31, the main... The locking tongue 33 and the reinforced locking tongue 36 are retracted into the housing 11. The movable rod 31 drives the external pressure spring 32 to compress, causing the push plate 34 to move to the lower right side of the rotating block 61. Then, the knob 62 is turned to drive the rotating block 61 to rotate downward along the C-shaped slide rail 1201, so that the rotating block 61 blocks the left side of the push plate 34. At this time, the user releases the handle 23. The compressed external pressure spring 32 can no longer push the movable rod 31 to drive the push plate 34 to the left past the rotating block 61, thus allowing the main locking tongue 33 and the reinforced locking tongue 36 to retract. The latch 36 remains in the unlocked state and is retracted into the housing 11. At this time, the weak magnetic attraction generated by the second magnet 51 on the copper core material of the first magnet 42 serves as the fixing force to keep the main latch 33 and the reinforcing latch 36 closed on the antimagnetic liner 13, keeping the door and the door frame in a closed state. The user only needs to push the door to overcome the weak magnetic attraction and open the door. Then, following the above steps, the strong magnetic attraction generated by the first magnet 42 on the movable iron block 52 and the second magnet 51 will automatically close the door, keeping the door and the door frame closed again. This allows the user to open and close the door without frequently using a key, and the door will remain closed to the door frame after closing. In addition, when the user holds the handle 23, they can easily feel that the handle 23 is in a downward rotating tilted state, thus remembering that the lock body 22 is in an unlocked state, reminding the user that the handle 23 needs to be restored to its original state to allow the lock body 22 to return to the locked state with the lock housing 21.

[0029] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. A high-strength door lock that automatically closes, comprising a housing (11); characterized in that: It also includes a cover plate (12); a cover plate (12) is fixedly attached to the housing (11); a lock shell (21) is installed inside the housing (11); a lock body (22) is installed inside the lock shell (21); a handle (23) is fixedly attached to the front and rear sides of the lock body (22); a push rod (24) is fixedly attached to the middle of the lock body (22); a movable rod (31) is slidably connected inside the housing (11); an external pressure spring (32) is fixedly connected between the movable rod (31) and the housing (11); a main lock tongue (33) is fixedly attached to the movable rod (31); the main lock tongue (33) is slidably connected to the housing (11); a handle (23) is fixedly attached to the movable rod (31). There is a push plate (34); a push rod (24) is close to the push plate (34); an antimagnetic metal block (41) is fixed on the housing (11), and the antimagnetic metal block (41) is located below the main lock tongue (33); a first magnet (42) is installed on the antimagnetic metal block (41); an antimagnetic liner (13) is provided on one side of the housing (11); a lock groove (1301) structure is provided on the antimagnetic liner (13); a notch (1302) structure is provided in the antimagnetic liner (13) to allow the antimagnetic metal block (41) to enter and exit; a second magnet (51) corresponding to the first magnet (42) is installed on the front side of the antimagnetic liner (13).

2. A high-strength door lock with automatic closing as described in claim 1, characterized in that: The housing (11) is slidably connected to the reinforcing block (35); a reinforcing latch (36) is fixedly connected to the reinforcing block (35); the reinforcing latch (36) is slidably connected to the housing (11); the reinforcing latch (36) is fixedly connected to the main latch (33).

3. A high-strength door lock with automatic closing as described in claim 2, characterized in that: Both the main latch (33) and the reinforced latch (36) are made of anti-theft reinforced steel alloy material.

4. A high-strength door lock with automatic closing as described in claim 1, characterized in that: The first magnet (42) uses an electromagnet component; a battery module (43) that supplies power to the first magnet (42) is installed inside the housing (11).

5. A high-strength door lock with automatic closing as described in claim 4, characterized in that: The battery module (43) is equipped with a control switch (431) that controls the direction of the magnetic pole of the first magnet (42), and the control switch (431) protrudes forward from the cover plate (12).

6. A high-strength door lock with automatic closing as described in claim 4, characterized in that: A distance sensor (44) is installed on the antimagnetic metal block (41).

7. A high-strength door lock with automatic closing as described in claim 1, characterized in that: A spring damper (45) is installed on the antimagnetic metal block (41).

8. A high-strength door lock with automatic closing as described in claim 1, characterized in that: A buffer pad (46) is fixed on the antimagnetic metal block (41).

9. A high-strength door lock with automatic closing as described in claim 4, characterized in that: The second magnet (51) has a movable iron block (52) slidably connected inside; the movable iron block (52) and the antimagnetic liner (13) are both fixedly connected by an inner compression spring (53).

10. A high-strength door lock with automatic closing according to any one of claims 1-9, characterized in that: The cover plate (12) is provided with a C-shaped slide rail (1201) structure; a rotating block (61) for locking the push plate (34) is slidably connected on the C-shaped slide rail (1201) of the cover plate (12); a knob (62) is fixedly connected on the rotating block (61).

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