Door with self-locking device

By employing a convenient locking and quick-locking mechanism, and utilizing threaded connections and rigid mechanical structures, the complex transmission and insufficient locking capabilities of traditional locks are solved, achieving a door lock design that offers both quick locking and high security.

CN224260060UActive Publication Date: 2026-05-19BEIJING HONGTECHLIN FURNITURE & BUILDING MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING HONGTECHLIN FURNITURE & BUILDING MATERIALS CO LTD
Filing Date
2025-06-05
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Traditional locks suffer from problems such as complex transmission, easy wear and tear, and inability to lock completely, resulting in insufficient security and convenience, especially in preventing intruders from being forcibly opened.

Method used

It adopts a convenient locking mechanism and a quick locking mechanism, and uses mechanical structures such as threaded connection, inclined plate block and locking ball to achieve rigid connection to ensure door locking. Through the cooperation of pressing block and locking rod, locking ball and inclined plate block form rigid limit, combined with driven rotating plate and drive solenoid groove to prevent locking rod from moving.

Benefits of technology

It enables quick locking and shut-off, improving door security, preventing others from easily opening it, and enhancing the door's protective capabilities.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of door locks, and discloses a door with a self-locking device, which comprises a door frame, a door plate, a spring hinge fixedly connected between the door plate and the door frame, and a door handle fixedly connected with one side of the door plate, a convenient locking mechanism is arranged between the door plate and the door frame, and a quick locking mechanism is arranged in the door plate. The convenient locking mechanism comprises a threaded lock sleeve, the threaded lock sleeve is in threaded connection with the interior of the door frame, a dismounting and mounting groove is formed in one side of the threaded lock sleeve, a slope clamping block is fixedly connected to the inner side of the threaded lock sleeve, a threaded connection cylinder is in threaded connection with the interior of the door plate, and a sleeve plate is fixedly connected to the inner wall of the threaded connection cylinder. One side of the sleeve plate is fixedly connected with an insertion sleeve, the convenient locking mechanism is used for rapidly locking a door, meanwhile, the mechanism adopts rigid connection, so that other people cannot open the door easily, the safety of the door lock is improved, and the rapid locking mechanism is used for locking the door, preventing other people from being limited by the door and improving the safety of the door.
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Description

Technical Field

[0001] This utility model relates to the field of door lock technology, specifically a door with a self-locking device. Background Technology

[0002] A lock is a security device used to protect and control access to objects, equipment, or spaces. Locks can be categorized into door locks, padlocks, and luggage locks, each with its specific application scenarios and functional requirements. Doors with self-locking mechanisms are a type of door product that integrates advanced self-locking technology, designed to provide a higher level of security and convenience. They are widely used in homes, offices, hotels, and other places, especially suitable for occasions requiring high security performance. Self-locking mechanisms typically use mechanical structures or electronic controls to achieve the locking function. Mechanical structures may include components such as springs and gears, while electronic controls may involve components such as sensors and motors.

[0003] In existing door products, various locks are usually equipped to improve security and convenience. However, traditional locks often have complex transmission problems, which increases the possibility of lock failure. They are prone to internal structural wear, which can cause them to become stuck and unable to open. Moreover, existing locks are not always able to lock completely, making it difficult to stop an intruder when someone forces the door open. In some specific situations, they cannot meet users' high security requirements. Utility Model Content

[0004] The purpose of this invention is to provide a door with a self-locking device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a door with a self-locking device, comprising a door frame and a door panel, a spring hinge fixedly connected between the door panel and the door frame, and a door handle fixedly connected to one side of the door panel, wherein a convenient locking mechanism is provided between the door panel and the door frame, and a quick locking mechanism is provided inside the door panel;

[0006] The convenient locking mechanism includes a threaded lock sleeve, which is threadedly connected to the inside of the door frame. A disassembly groove is provided on one side of the threaded lock sleeve. A beveled locking block is fixedly connected to the inner side of the threaded lock sleeve. A threaded connecting cylinder is threadedly connected to the inside of the door panel. A sleeve plate is fixedly connected to the inner wall of the threaded connecting cylinder. A plug sleeve is fixedly connected to one side of the sleeve plate. A top cylinder is slidably connected to the inner wall of the threaded connecting cylinder. A slider is fixedly connected to the outer side of the top cylinder. A spreading spring is fixedly connected between the top cylinder and the sleeve plate. A locking ball is movably disposed inside the plug sleeve. A locking rod is rotatably connected to the inside of the door panel. The locking rod extends through the top cylinder and the sleeve plate into the plug sleeve. The locking rod is rotatably connected to the sleeve plate and the top cylinder. A limiting lock groove is provided at one end of the locking rod. An elastic connecting member is fixedly connected between the limiting lock groove and the locking ball. A pressing block is fixedly connected to one side of the locking rod. Lock holes are provided inside the locking rod and the pressing block.

[0007] Preferably, the threaded connecting cylinder has a sliding groove inside.

[0008] Preferably, one end of the socket has multiple spherical openings inside.

[0009] Preferably, the locking ball and the elastic connector are provided in multiple quantities and are evenly distributed inside the socket.

[0010] Preferably, the quick locking mechanism includes a sealing slot, a straight slot, and a driving helical slot. The sealing slot is located inside the threaded connecting cylinder, the straight slot is located on the inner wall of one side of the top cylinder, a driven rotating plate is rotatably connected inside the top cylinder, the driven rotating plate is fixedly connected to the locking rod, the driving helical slot is located on one side of the driven rotating plate, a sliding rod is slidably connected between the inner wall of the driving helical slot and the inner wall of the straight slot, and a locking block is fixedly connected to one side of the sliding rod.

[0011] Preferably, the locking block is the same size as the locking slot.

[0012] Preferably, the locking block has a columnar structure at one end inside the drive helical groove, and a long slot-shaped structure at the other end inside the straight groove.

[0013] Compared with the prior art, this utility model provides a door with a self-locking device, which has the following advantages:

[0014] 1. The convenient locking mechanism is used to quickly lock the door. At the same time, the mechanism adopts a rigid connection, making it impossible for others to easily open the door, thus improving the security of the door lock. Specifically, the user closes the door by pressing the pressing block. At this time, the insert enters the inside of the threaded lock sleeve, which opens the spring and drives the lock rod to move. At the same time, the lock rod's limiting groove abuts against the locking ball and pushes the locking ball out of the insert. After the locking ball abuts against the inclined block, the limiting groove restricts the slider from entering the insert, thus locking the door. In conjunction with the quick locking mechanism, the door can be locked.

[0015] 2. The quick-locking mechanism is used to lock the door, preventing others from passing through and improving the door's security. Specifically, the locking rod rotates, driving the driven rotating plate to rotate. The driven rotating plate uses a drive helical groove to drive the locking block to move. The locking block engages with the locking groove, preventing the locking rod from moving. This prevents the locking ball from disengaging from the inclined locking block, thus locking the door. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a cross-sectional view of the door lock in this utility model;

[0020] Figure 4 This is a schematic diagram of the threaded locking sleeve in this utility model;

[0021] Figure 5 This is a schematic diagram of the locking block in this utility model.

[0022] In the diagram: 1. Door frame; 2. Door panel; 3. Spring hinge; 4. Door handle; 5. Convenient locking mechanism; 501. Threaded lock sleeve; 502. Removal groove; 503. Angled locking block; 504. Threaded connecting sleeve; 505. Sleeve plate; 506. Insert sleeve; 507. Top cylinder; 508. Slider; 509. Spreading spring; 510. Locking ball; 511. Locking rod; 512. Limiting lock groove; 513. Elastic connector; 514. Pressing block; 515. Lock hole; 6. Quick locking mechanism; 601. Sealing groove; 602. Straight groove; 603. Driven rotating plate; 604. Drive helical groove; 605. Sliding bar; 606. Locking block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-5 This utility model provides a technical solution: a door with a self-locking device, including a door frame 1 and a door panel 2, a spring hinge 3 fixedly connected between the door panel 2 and the door frame 1 and a door handle 4 fixedly connected to one side of the door panel 2, a convenient locking mechanism 5 between the door panel 2 and the door frame 1, and a quick locking mechanism 6 inside the door panel 2.

[0027] The convenient locking mechanism 5 includes a threaded locking sleeve 501, which is threadedly connected to the inside of the door frame 1. A disassembly groove 502 is provided on one side of the threaded locking sleeve 501. A beveled locking block 503 is fixedly connected to the inner side of the threaded locking sleeve 501. A threaded connecting sleeve 504 is threadedly connected to the inside of the door panel 2. A sleeve plate 505 is fixedly connected to the inner wall of the threaded connecting sleeve 504. A plug sleeve 506 is fixedly connected to one side of the sleeve plate 505. A top cylinder 507 is slidably connected to the inner wall of the threaded connecting sleeve 504. A slider 508 is fixedly connected to the outside of the top cylinder 507. A spreading spring 509 is fixedly connected between the top cylinder 507 and the sleeve plate 505. A locking ball 510 is movably installed inside the insert sleeve 506. A locking rod 511 is rotatably connected inside the door panel 2. The locking rod 511 passes through the top cylinder 507 and the sleeve plate 505 and extends into the insert sleeve 506. The locking rod 511 is rotatably connected to the sleeve plate 505 and the top cylinder 507. A limit lock groove 512 is opened at one end of the locking rod 511. The limit lock groove 512 is connected to... An elastic connector 513 is fixedly connected between the locking balls 510. A pressing block 514 is fixedly connected to one side of the locking rod 511. A locking hole 515 is opened inside the locking rod 511 and the pressing block 514. There is a gap between the insert 506 and the inclined locking block 503 to facilitate the insertion of the insert 506. Multiple spherical slots are opened on the outside of the insert 506. When the user closes the door, the pressing block 514 is pushed to store the force of the opening spring 509. At this time, the ball is located between the inside of the spherical slot and the sealing slot 601. The user then closes the door, releasing the spring force of the spring 509 to move the locking lever 511. The end of the locking lever 511 pushes the locking ball 510 out of the slot on the sleeve 506. The locking ball 510 abuts against the inclined surface of the locking slot 601. At this time, the locking ball 510 is stuck between the outer side of the spherical slot and the inclined surface block 503. The supporting force of the sleeve 506 prevents the locking ball 510 from moving. The door cannot be opened at this time. The user needs to push the pressing block 514 to open the door.

[0028] Furthermore, the threaded connecting sleeve 504 has a sliding groove inside.

[0029] Furthermore, the insert 506 has multiple spherical openings inside one end.

[0030] Furthermore, multiple locking balls 510 and resilient connectors 513 are provided and evenly distributed inside the socket 506.

[0031] Example 2:

[0032] Please see Figure 1-5Furthermore, in conjunction with Embodiment 1, the quick-locking mechanism 6 includes a sealing slot 601, a straight slot 602, and a driving helical slot 604. The sealing slot 601 is located inside the threaded connecting cylinder 504, the straight slot 602 is located on one side of the inner wall of the top cylinder 507, a driven rotating plate 603 is rotatably connected inside the top cylinder 507, the driven rotating plate 603 is fixedly connected to the locking rod 511, the driving helical slot 604 is located on one side of the driven rotating plate 603, and a sliding rod 6 is slidably connected between the inner wall of the driving helical slot 604 and the inner wall of the straight slot 602. 05. A locking block 606 is fixedly connected to one side of the slide bar 605. The driven rotating plate 603 is fixedly connected to the locking rod 511. The locking block 606 is fixed by plugging in the locking slot 601, so that the plug bar cannot rotate. When the plug bar is restricted from moving, the locking ball 510 will not be able to move, thus ensuring that the door cannot be opened. The bearing capacity of this device depends on the thickness of the plug sleeve 506 and the rigidity of the locking ball 510. At the same time, through direct hard contact, it has better support force compared with the existing door lock that uses elastic sliding and is fixed to the door frame 1.

[0033] Furthermore, the locking block 606 is the same size as the locking slot 601.

[0034] Furthermore, the locking block 606 is configured with a columnar structure at one end inside the drive helical groove 604, and a long slot-shaped structure at the other end inside the straight groove 602.

[0035] In actual operation, when this device is used, the user presses the pressing block 514 to store the force of the opening spring 509. Then, the user pushes the door to close it. At this time, the locking rod 511, under the force of the opening spring 509, abuts against the locking ball 510. Due to the inclined surface of the limiting lock groove 512, the elastic force of the opening spring 509 and the limiting lock groove 512 of the locking rod 511 work together to push the locking ball 510 out of the insert 506. At this time, the locking ball 510 is on the outside of the insert 506, and the locking ball 510 abuts against the inclined block 503. At this time, the locking ball 510 is abutted by the locking rod 511 and simultaneously against the insert 506. Friction restricts the movement of the locking ball 510. Since the locking bar 511 has been reset, the user can use the existing key in conjunction with the keyhole 515 to rotate the locking bar 511. When the locking bar 511 rotates, it drives the driven rotating plate 603 to rotate. The driven rotating plate 603 uses the drive screw groove 604 to push the locking block 606 into the sealing groove 601. At this time, the locking bar 511 is fixed, making the door unable to be opened. The user can unlock the door by rotating the locking bar 511. Because the opening depth of the limiting lock groove 512 is different, pressing the locking bar 511 will cause the locking ball to be hidden inside the insert 506, which can open the door and increase the security of the door lock.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A door with a self-locking device, comprising a door frame (1), a door panel (2), a spring hinge (3) fixedly connected between the door panel (2) and the door frame (1), and a door handle (4) fixedly connected to one side of the door panel (2), characterized in that: A convenient locking mechanism (5) is provided between the door panel (2) and the door frame (1), and a quick locking mechanism (6) is provided inside the door panel (2). The convenient locking mechanism (5) includes a threaded locking sleeve (501), which is threadedly connected to the inside of the door frame (1). A disassembly groove (502) is provided on one side of the threaded locking sleeve (501). An inclined locking block (503) is fixedly connected to the inside of the threaded locking sleeve (501). A threaded connecting cylinder (504) is threadedly connected to the inside of the door panel (2). A sleeve plate (505) is fixedly connected to the inner wall of the threaded connecting cylinder (504). A plug sleeve (506) is fixedly connected to one side of the sleeve plate (505). A top cylinder (507) is slidably connected to the inner wall of the threaded connecting cylinder (504). A slider (508) is fixedly connected to the outer side of the top cylinder (507). The top cylinder (507) and the sleeve plate (505) are fixedly connected. A spring (509) is fixedly connected to the door panel (2). A locking ball (510) is movably disposed inside the sleeve (506). A locking rod (511) is rotatably connected inside the door panel (2). The locking rod (511) extends through the top cylinder (507) and the sleeve plate (505) into the sleeve (506). The locking rod (511) is rotatably connected to the sleeve plate (505) and the top cylinder (507). A limiting lock groove (512) is opened at one end of the locking rod (511). An elastic connector (513) is fixedly connected between the limiting lock groove (512) and the locking ball (510). A pressing block (514) is fixedly connected to one side of the locking rod (511). A lock hole (515) is opened inside the locking rod (511) and the pressing block (514).

2. A door with a self-locking device according to claim 1, characterized in that: The threaded connecting sleeve (504) has a sliding groove inside.

3. A door with a self-locking device according to claim 1, characterized in that: The sleeve (506) has multiple spherical openings inside one end.

4. A door with a self-locking device according to claim 1, characterized in that: The locking ball (510) and the elastic connector (513) are provided in multiple and evenly distributed inside the sleeve (506).

5. A door with a self-locking device according to claim 1, characterized in that: The quick locking mechanism (6) includes a sealing slot (601), a straight slot (602), and a driving helical slot (604). The sealing slot (601) is located inside the threaded connecting cylinder (504). The straight slot (602) is located on the inner wall of one side of the top cylinder (507). A driven rotating plate (603) is rotatably connected inside the top cylinder (507). The driven rotating plate (603) is fixedly connected to the locking rod (511). The driving helical slot (604) is located on one side of the driven rotating plate (603). A sliding rod (605) is slidably connected between the inner wall of the driving helical slot (604) and the inner wall of the straight slot (602). A locking block (606) is fixedly connected to one side of the sliding rod (605).

6. A door with a self-locking device according to claim 5, characterized in that: The locking block (606) is the same size as the locking slot (601).

7. A door with a self-locking device according to claim 5, characterized in that: The locking block (606) is configured with a columnar structure at one end inside the drive helical groove (604), and the locking block (606) is configured with a long groove-shaped cross-section at one end inside the straight groove (602).