Double-leaf embedded type metal anti-theft door
By using a double-leaf interlocking metal security door design, the combination of a transmission plate and a positioning plate enhances the stability of the connection between the door panel and the door frame, overcoming the limitations of existing metal security doors in their locking structure and achieving more efficient anti-theft performance.
Patent Information
- Application Number
- CN202422890147.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing metal security doors have limitations in their locking structure design, relying on traditional lock cylinders, which makes it difficult to effectively prevent illegal intrusion, especially intrusions that occur by damaging the connection between the door panel and the door frame.
It adopts a double-leaf interlocking design. By adjusting the cooperation between the door panel and the support door panel, and using the combination structure of the transmission plate, positioning plate and lock cylinder, the connection stability between the door panel and the door frame is enhanced. The transmission plate is locked by the limiting mechanism, which improves the anti-theft performance.
It improves the anti-theft effect of the security door, enhances the connection stability between the door panel and the door frame, prevents violent damage, and achieves more efficient anti-theft performance.
Smart Images

Figure CN223767394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of security door technology, specifically to a double-leaf interlocking metal security door. Background Technology
[0002] In modern society, with people's increasing awareness of property security, metal security doors, as an important component for property security, are widely used in residences, commercial premises, and various areas requiring secure isolation. The main function of these metal security doors is to prevent unauthorized personnel from opening and entering the room through means other than keys (such as prying locks or forced entry), thereby effectively protecting the user's property and personal safety.
[0003] However, despite continuous optimization in materials and structure to enhance the resistance to damage, existing metal security doors still have limitations in their locking mechanisms. Most security doors still rely on traditional lock cylinders on the door handles for locking. While this method can resist simple prying to some extent, its overall security is insufficient. Current security door locking structures often focus only on the robustness and complexity of the lock itself, neglecting the impact of the tightness of the fit between the door panel and frame on security performance. In some cases, even if the lock itself is difficult to pry open, criminals may still illegally enter by forcibly damaging the connection between the door frame and the door panel. Therefore, further improvements in the security performance of metal security doors are needed to reduce security risks.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a shockproof high-voltage distribution cabinet to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A double-leaf interlocking metal security door includes a security door frame. An adjustable door panel is rotatably mounted on one side of the inner side of the security door frame, and a support door panel is rotatably mounted on the other side. Security door locks are fixedly mounted on both sides of the surface of the support door panel. A metal lock cylinder is slidably mounted on one side of each security door lock. A transmission groove is formed inside the adjustable door panel, and positioning plates are slidably mounted on both sides of the transmission groove. Reinforcing grooves are formed on both sides of the inner wall of the security door frame. One end of each positioning plate engages with a reinforcing groove. A telescopic spring is fixedly connected to both sides of the surface of the positioning plate, and one end of each telescopic spring is fixedly mounted inside the transmission groove. A pressure-bearing inclined surface is formed on one side of the positioning plate, and an adjusting groove is formed on one side of the transmission groove. A transmission plate is slidably mounted inside the adjusting groove, and one end of the transmission plate engages with the angle of the pressure-bearing inclined surface. Limiting grooves are formed on the upper and lower sides of the adjusting groove, and limiting mechanisms are provided inside the limiting grooves.
[0008] Furthermore, in order to limit the adjustment of the transmission plate, the limiting mechanism includes a second telescopic spring fixedly installed in the limiting groove, a transmission block fixedly connected to the end of the second telescopic spring, a sliding groove opened on one side of the limiting groove, a third telescopic spring fixedly connected to both sides of the sliding groove, and a positioning rod fixedly connected to one end of the third telescopic spring.
[0009] Furthermore, in order to enable the movement of the transmission block to push the positioning rod, a second pressure-bearing inclined surface is opened on one side of the positioning rod, and one side surface of the transmission block is matched with the second pressure-bearing inclined surface. A first fitting groove is opened on both sides of the surface of the transmission plate, and the end of the positioning rod is matched with the first fitting groove.
[0010] Furthermore, in order to limit the movement of the transmission plate by the metal lock cylinder, the metal lock cylinder cooperates with the limiting groove.
[0011] Furthermore, in order to achieve the effect of the adjusting door panel blocking the supporting door panel after the two door panels are closed, a mating plate is fixedly connected to one end of the adjusting door panel, and a second mating groove is opened on one side of the supporting door panel, with the mating plate and the second mating groove cooperating.
[0012] Furthermore, in order to reduce the friction when the positioning plate slides in the lifting groove, lifting grooves are opened on both sides of the transmission groove, and rollers are rotatably installed on both sides of the positioning plate, with the rollers rolling in the lifting groove.
[0013] Furthermore, to facilitate pushing the transmission plate and the two door panels, a push rod is fixedly connected to one side of the transmission plate, and a push-pull handle is fixedly installed on the side supporting the door panels.
[0014] The beneficial effects of this utility model are as follows: the anti-theft door is sealed and closed by adjusting the cooperation between the door panel and the supporting door panel. After the two door panels are closed, the transmission plate in the adjustment groove is pushed, causing the inclined surface at one end of the transmission plate to press against the pressure inclined surface at the end of the two positioning plates. This causes the two positioning plates to move towards the upper and lower ends of the adjustment door panel and enter the reinforcing groove in the inner wall of the anti-theft door frame, thus strengthening the connection between the anti-theft door frame and the two door panels and improving the anti-theft effect of the anti-theft door. After the transmission plate moves, the metal lock core on the supporting door panel can move into the limiting groove, pushing the transmission block and the positioning rod to move downward into the fitting groove on the surface of the transmission plate. This achieves locking between the two door panels and limiting the adjustment of the transmission plate, which provides the anti-theft effect. The anti-theft operation is convenient and quick. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.
[0016] Figure 1 This is a schematic diagram of the surface structure of a double-leaf inlaid metal security door according to an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the opening structure of a double-leaf interlocking metal security door according to an embodiment of the present utility model;
[0018] Figure 3 This is a rear view of a double-leaf interlocking metal security door according to an embodiment of the present utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the anti-theft door frame in a double-leaf inlaid metal anti-theft door according to an embodiment of the present utility model;
[0020] Figure 5 This is an internal cross-sectional view of the adjustable door panel in a double-leaf inset metal security door according to an embodiment of the present utility model;
[0021] Figure 6 yes Figure 5 Enlarged view of point A in the middle;
[0022] Figure 7 This is a schematic diagram of the surface structure of the transmission plate in a double-leaf interlocking metal security door according to an embodiment of the present utility model.
[0023] In the picture:
[0024] 1. Security door frame; 2. Adjustable door panel; 3. Support door panel; 4. Security door lock; 5. Metal lock cylinder; 6. Transmission groove; 7. Positioning plate; 8. Reinforcing groove; 9. Telescopic spring one; 10. Pressure inclined surface one; 11. Adjustment groove; 12. Transmission plate; 13. Limiting groove; 14. Limiting mechanism; 1401. Telescopic spring two; 1402. Transmission block; 1403. Sliding groove; 1404. Telescopic spring three; 1405. Positioning rod; 1406. Pressure inclined surface two; 1407. Fitting groove one; 15. Fitting plate; 16. Fitting groove two; 17. Lifting groove; 18. Roller; 19. Push rod; 20. Push-pull handle. Detailed Implementation
[0025] 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.
[0026] According to an embodiment of the present invention, a double-leaf interlocking metal security door is provided.
[0027] Example 1:
[0028] like Figures 1-7As shown, a double-leaf inset metal security door according to an embodiment of this utility model includes a rectangular metal security door frame 1. An adjustable door panel 2 is rotatably mounted on one side of the interior of the security door frame 1, and a support door panel 3 is rotatably mounted on the other side. Two security door locks 4 are fixedly mounted on both sides of the surface of the support door panel 3. A metal lock cylinder 5 is slidably mounted on one side of each security door lock 4, allowing the metal lock cylinder 5 to slide out from one side of the support door panel 3 by turning a key. A transmission groove 6 is opened inside the adjustable door panel 2. A pair of positioning plates 7 are slidably mounted on the upper and lower sides of the transmission groove 6. Reinforcing grooves 8 are opened on both sides of the inner wall of the security door frame 1. One end of the positioning plate 7 cooperates with the reinforcing groove 8. By sliding the positioning plate 7 within the reinforcing groove 8, the stability of the connection between the adjustable door panel 2 and the security door frame 1 is increased, thereby improving the security performance. A pair of telescopic springs are fixedly connected to both sides of the surface of the positioning plate 7. Each spring-9 has one end fixedly installed in the transmission groove 6. After the positioning plate 7 slides due to the elastic force of the spring-9, it can automatically reset. One side of the positioning plate 7 has a pressure-receiving inclined surface-10, and the middle of one side of the transmission groove 6 has an adjustment groove 11. The transmission plate 12 is slidably installed inside the adjustment groove 11. One end of the transmission plate 12 is angled with the pressure-receiving inclined surface-10. By pushing the transmission plate 12, the end of the transmission plate 12 presses against the pressure-receiving inclined surface-10 at one end of the positioning plate 7, so that the positioning plate 7 in the transmission groove 6 can move towards both ends of the adjustment door plate 2, and then one end of the positioning plate 7 enters the reinforcing groove 8. Limiting grooves 13 are opened on the upper and lower sides of the adjustment groove 11. The limiting grooves 13 are equipped with limiting mechanisms 14 inside, which are used to limit the transmission plate 12 after sliding adjustment to prevent it from continuing to slide in the adjustment groove 11.
[0029] like Figures 1-7As shown, the limiting mechanism 14 includes a second telescopic spring 1401 fixedly installed in the limiting groove 13. A transmission block 1402 is fixedly connected to the end of the second telescopic spring 1401. The transmission block 1402 is slidably installed in the limiting groove 13. A sliding groove 1403 is opened on one side of the limiting groove 13. A pair of third telescopic springs 1404 are fixedly connected to both sides of the sliding groove 1403. A positioning rod 1405 is fixedly connected to one end of the third telescopic spring 1404. A second pressure-bearing inclined surface 1406 is opened on one side of the positioning rod 1405. One side surface of the transmission block 1402 mates with the second pressure inclined surface 1406. The transmission plate 12 has two mating grooves 1407 on its surface. The end of the positioning rod 1405 mates with the first mating groove 1407. The metal lock core 5 mates with the limiting groove 13. The metal lock core 5 is slidably installed in the limiting groove 13, causing it to push the transmission block 1402 to slide within the limiting groove 13. This causes the inclined surface on one side of the transmission block 1402 to press against the second pressure inclined surface 1406, and pushes the positioning rod 1405 downwards. The end of the positioning rod 1405 is fitted into the fitting groove 1407 on the surface of the transmission plate 12 to limit the movement of the transmission plate 12. When the metal lock cylinder 5 retracts, the spring force of the second telescopic spring 1401 and the third telescopic spring 1404 allows the transmission block 1402 and the positioning rod 1405 to move and reset. One end of the adjusting door panel 2 is fixedly connected to the fitting plate 15, and the side of the supporting door panel 3 has a fitting groove 16. The fitting plate 15 and the fitting groove 16 cooperate to close the two door panels. After closing, the adjusting door panel 2 limits the support door panel 3; the transmission groove 6 has lifting grooves 17 on both sides, and the positioning plate 7 has rollers 18 rotatably installed on both sides. The rollers 18 are rolled in the lifting grooves 17 to reduce the friction when the positioning plate 7 slides in the transmission groove 6; a push rod 19 is fixedly connected to one side of the transmission plate 12 to facilitate pushing and pulling the transmission plate 12; a push handle 20 is fixedly installed on one side of the support door panel 3 to facilitate pushing, pulling and rotating the support door panel 3.
[0030] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.
[0031] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, the anti-theft door is sealed and closed by adjusting the cooperation between the door panel 2 and the supporting door panel 3. After the two door panels are closed, the transmission plate 12 in the adjustment groove 11 is pushed by the push rod 19, so that the inclined surface at one end of the transmission plate 12 presses the pressure inclined surface 10 at the end of the two positioning plates 7, thereby causing the two positioning plates 7 to move to the upper and lower ends of the adjusting door panel 2 respectively, and enter the reinforcing groove 8 in the inner wall of the anti-theft door frame 1, so as to strengthen the connection between the anti-theft door frame 1 and the two door panels, thereby improving the anti-theft effect of the anti-theft door. After the transmission plate 12 moves, the metal lock core 5 on the supporting door panel 3 can move into the limiting groove 13, and push the transmission block 1402 and the positioning rod 1405 to move, so that the positioning rod 1405 moves downward into the fitting groove 1407 on the surface of the transmission plate 12, thereby realizing the limiting adjustment of the transmission plate 12, which plays an anti-theft role, by locking between the two door panels.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A double-leaf chimeric metal security door, characterized in that, The application relates to a security door frame (1), which is internally provided with an adjusting door plate (2) rotatably arranged on one side and a supporting door plate (3) rotatably arranged on the other side, the surface of the supporting door plate (3) is fixedly provided with security door locks (4) on both sides, the security door locks (4) are slidably provided with metal lock cores (5) on one side, the adjusting door plate (2) is internally provided with a transmission groove (6), the transmission groove (6) is slidably provided with positioning plates (7) on both sides, the inner wall of the security door frame (1) is provided with reinforcing grooves (8) on both sides, one end of the positioning plate (7) is matched with the reinforcing grooves (8), the positioning plate (7) is fixedly connected with retractable springs I (9) on both sides of the surface, one end of the retractable springs I (9) is fixedly arranged in the transmission groove (6), one side of the positioning plate (7) is provided with a pressure receiving inclined surface I (10), one side of the transmission groove (6) is provided with an adjusting groove (11), the adjusting groove (11) is slidably provided with a transmission plate (12), the angle of the surface of one end of the transmission plate (12) is matched with that of the pressure receiving inclined surface I (10), the adjusting groove (11) is provided with limiting grooves (13) on the upper and lower sides, and the limiting grooves (13) are provided with limiting mechanisms (14) in the inside.
2. The double-leaf inset metal security door according to claim 1, wherein, The limiting mechanism (14) comprises retractable springs II (1401) fixedly arranged in the limiting grooves (13), the retractable springs II (1401) are fixedly connected with transmission blocks (1402) at the tail ends, one side of the limiting grooves (13) is provided with sliding grooves (1403), the sliding grooves (1403) are fixedly connected with retractable springs III (1404) on both sides, one end of the retractable springs III (1404) is fixedly connected with positioning rods (1405).
3. The double-leaf inset metal security door according to claim 2, wherein, One side of the positioning rod (1405) is provided with a pressure receiving inclined surface II (1406), the surface of one side of the transmission block (1402) is matched with the pressure receiving inclined surface II (1406), the surface of the transmission plate (12) is provided with embedded grooves I (1407) on both sides, and the tail end of the positioning rod (1405) is matched with the embedded grooves I (1407).
4. The double-leaf inset metal security door according to claim 1, wherein, The metal lock core (5) is matched with the limiting grooves (13).
5. The double-leaf inset metal security door according to claim 1, wherein, One end of the adjusting door plate (2) is fixedly connected with an embedded plate (15), one side of the supporting door plate (3) is provided with embedded grooves II (16), and the embedded plate (15) is matched with the embedded grooves II (16).
6. The double-leaf inset metal security door according to claim 1, wherein, Both sides of the transmission groove (6) are provided with lifting grooves (17), and the positioning plates (7) are rotatably provided with rollers (18) on both sides, the rollers (18) are rollingly arranged in the lifting grooves (17).
7. The double-leaf inset metal security door according to claim 1, wherein, One side of the transmission plate (12) is fixedly connected with a pushing rod (19), and one side of the supporting door plate (3) is fixedly provided with a push-pull handle (20).