Anti-theft door
By introducing a sliding lock plate structure and a magnetic attraction locking plate limit design into the security door, the problem of the lock tongue being easily deformed under external impact is solved, enhancing the impact resistance and security of the security door.
Patent Information
- Application Number
- CN202520240219.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-16
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-16
AI Technical Summary
Existing security doors are prone to deformation, aging, or even being forced open when subjected to external impacts, lacking effective protective measures.
The sliding lock plate structure is adopted. The sliding lock plate slides inside the door frame and engages with the door panel. The locking plate is attracted by a magnet to achieve the limit, which increases the force-bearing area and avoids the lock tongue being directly impacted.
It effectively protects the latch, enhances the impact resistance of the connection between the door panel and the door frame, prevents the latch from deforming and being knocked open, and improves the security of the security door.
Smart Images
Figure CN223621364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of home doors, specifically security doors. Background Technology
[0002] Security doors, also known as burglarproof doors, are primarily used in residences and other places requiring security. Their main function is theft prevention, so their structure is definitely more robust than ordinary doors. As a building security product that combines theft prevention and security features, security doors are mainly divided into hinged, grille, and composite types, and their materials include steel, steel-wood, aluminum alloy, stainless steel, and copper. With technological advancements, smart security doors integrate innovative functions such as gravity sensing, video surveillance, fingerprint unlocking, pressure sensors, and remote alarms, further enhancing their anti-theft performance. Meanwhile, modular design and customized services (such as special sizes and explosion-proof integration) have also driven product diversification. In terms of market structure, China is one of the world's major producers and consumers of security doors. In 2022, the market size reached 31.872 billion yuan, accounting for 42.6% of the global total, and it is projected that the global market size will increase to 116.415 billion yuan by 2028, with a compound annual growth rate of 7.84%. The industry's growth benefits from urbanization, increased real estate demand, and enhanced resident awareness of theft prevention, but it also faces challenges such as a mixed market and fierce regional competition (e.g., the significant industrial cluster in Yongkang, Zhejiang).
[0003] While there are various types of security doors available today, whether they open inwards or outwards, the opening and closing of their locks relies solely on the connection between the lock's bolt or latch and the door frame. This means that in the event of an impact, the weight is borne entirely by the lock's bolt or latch. Although modern door frames and panels are quite thick and heavy, the door panel itself, due to its material and thick metal plate, is naturally resistant to impacts. However, the bolt or latch connecting the heavy door panel to the frame is a small, thin metal strip. Therefore, the bolt and latch are prone to deformation, aging, or even breaking under impact. Currently, there is no good solution to this problem. Utility Model Content
[0004] The purpose of this utility model is to solve the problem that, in existing security doors or ordinary doors, although the door panels are hard and strong, the door panels and door frames are connected by a latch or bolt. When encountering external impact, the load-bearing weight is solely supported by the latch or bolt of the door lock, making the latch or bolt prone to deformation, aging, or even breaking open when encountering external impact.
[0005] To solve the above-mentioned technical problems, the present invention provides a security door, comprising:
[0006] Door frame;
[0007] A sliding lock plate is located on one side of the door frame and is slidably installed inside the door frame; a connecting shaft is installed inside the sliding lock plate, and the connecting shaft has a movably connected connecting sleeve; four first locking plates are fixedly connected around the connecting sleeve, and the four first locking plates are radially and evenly distributed around the connecting sleeve.
[0008] A door panel is movably mounted to the door frame via hinges; the door panel is arranged parallel to the sliding lock plate; the door panel has a door lock, which has at least a latch; the latch is adjacent to the connecting shaft and is at a higher horizontal level than the connecting shaft; the door panel has a lock block fixedly connected to it, and the lock block has a second locking plate fixedly connected to it.
[0009] As a preferred embodiment of the anti-theft door of this utility model, one side of the door frame has a sliding groove, and the sliding lock plate is slidably installed in the sliding groove.
[0010] In a preferred embodiment of the anti-theft door of this utility model, the sliding lock plate has a groove on the side near the door panel, and the width of the groove is greater than the thickness of the door panel.
[0011] As a preferred embodiment of the anti-theft door of this utility model, the slot has a magnet that is fixedly connected to the sliding lock plate.
[0012] In a preferred embodiment of the security door of this utility model, the first locking plate is made of iron or steel.
[0013] As a preferred embodiment of the anti-theft door of this utility model, the edge of the sliding lock plate has a push-pull plate that is fixedly connected.
[0014] As a preferred embodiment of the anti-theft door of this utility model, the bottom of the sliding lock plate has a movably connected roller.
[0015] Beneficial effects
[0016] This utility model solves the above-mentioned existing problems and other existing problems not mentioned above, and brings at least the following innovative advantages:
[0017] This utility model of a security door features a sliding lock plate that can slide within the door frame. The sliding lock plate has a groove; by sliding the plate when the door is closed, pushing it causes the edge of the door to be positioned within the groove, thus limiting the door's movement. This allows the door to be directly connected to the sliding lock plate, which provides both limiting and support. When subjected to external impact, the door lock's bolt is not affected; instead, the entire door and the sliding lock plate are impacted. The door's larger contact area allows it to withstand stronger impacts. Therefore, the bolt is protected, solving the problem that current door locks or latches connecting the door to the frame are prone to deformation, aging, or even being forced open under impact. Attached Figure Description
[0018] Figure 1 This is a schematic diagram showing the overall front view of this utility model;
[0019] Figure 2 This is a front view of the door frame of this utility model;
[0020] Figure 3 This is a top view of the door frame of this utility model;
[0021] Figure 4 This is a front view of the sliding lock plate of this utility model;
[0022] Figure 5 This is a top view of the sliding lock plate of this utility model;
[0023] Figure 6 This is a front view of the door panel 6 of this utility model;
[0024] Figure 7 for Figure 1 A magnified view of a portion of area "A" in the image.
[0025] In the diagram: 1. Door frame, 2. Slide lock plate, 3. Connecting shaft, 4. Connecting sleeve, 5. First locking plate, 6. Door panel, 7. Door lock, 8. Lock block, 9. Second locking plate, 10. Slide groove, 11. Card slot, 12. Magnet, 13. Sliding plate, 14. Roller, 15. Hinge, 16. Lock tongue. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.
[0027] In the accompanying drawings, the same reference numerals represent the same parts. It should be noted that the described embodiments are only some, not all, of the embodiments disclosed herein.
[0028] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.
[0029] This utility model security door includes: a door frame 1, wherein... Figure 2 and Figure 3 The specific structure of door frame 1 is shown; sliding lock plate 2, Figure 1 This demonstrates that the sliding lock plate 2 is located on one side of the door frame 1, and that the sliding lock plate 2 is slidably installed within the door frame 1; see also Figure 4 and Figure 5 A connecting shaft 3 is installed inside the sliding lock plate 2, and the connecting shaft 3 has a movably connected connecting sleeve 4; four first locking plates 5 are fixedly connected around the connecting sleeve 4. Figure 4 and Figure 7 Four first locking plates 5 are radially and evenly distributed around the connecting sleeve 4;
[0030] Door panel 6, Figure 1 The door panel 6 is shown to be movably installed on the door frame 1 via hinge 15; the door panel 6 is arranged parallel to the sliding lock plate 2; the door panel 6 has a door lock 7. Figure 5 This demonstrates that the door lock 7 has at least a bolt 16; Figure 7 This demonstrates that the latch 16 is adjacent to the connecting shaft 3 and is at a higher horizontal level than the connecting shaft 3; for example... Figure 5 As shown, the door panel 6 has a fixedly connected locking block 8, and the locking block 8 has a fixedly connected second locking plate 9. Figure 7 As shown, the second locking plate 9 and the locking block 8 are at an intersecting angle; the second locking plate 9 and the door panel 6 are at a parallel angle. Figure 7 This demonstrates that when the connecting sleeve 4 is positioned near the door lock 7, at least two of the first locking plates 5 are located between the latch 16 and the second locking plate 9.
[0031] like Figure 4 and Figure 5 As shown, the slot 11 contains a magnet 12 fixedly connected to the sliding lock plate 2. In production, the first locking plate 5 of this invention is made of iron or steel. This ensures that when at least one of the four first locking plates 9 is attracted by the magnet, all four locking plates 9 can be in a locked position. Figure 7 The effect shown.
[0032] like Figure 3 As shown, one side of the door frame 1 has a groove 10, and the sliding lock plate 2 is slidably installed in the groove 10. Figure 5As shown, the sliding lock plate 2 has a slot 11 on the side near the door panel 6, and the width of the slot 11 is greater than the thickness of the door panel 6; when the sliding lock plate 2 slides towards the door panel 6 with the sliding groove 10 as the guide rail, one side of the door panel 6 is in the slot 11.
[0033] like Figure 4 As shown, the edge of the sliding lock plate 2 has a push-pull plate 13 fixedly connected to it. Meanwhile... Figure 4 The bottom of the slide plate 2 is shown to have a movably connected roller 14.
[0034] This utility model of a security door includes a sliding lock plate 2 that can slide within the door frame 1. The sliding lock plate 2 has a groove 11. By sliding the sliding lock plate 2, when the door panel 6 is closed, pushing the sliding lock plate 2 causes the edge of the door panel 6 to be within the groove 11, thus limiting the door's position. This allows the door panel 6 to be directly connected to the sliding lock plate 2, which limits and supports the door panel. When encountering an external impact, the latch 16 of the door lock 7 of the door panel 6 will not be affected by the impact force; instead, the impact force will be felt by the entire door panel 6 and the sliding lock plate 2. The door panel 6 has a larger force-bearing area and can withstand stronger impacts. Therefore, the latch 16 is protected, solving the problem that the latch or bolt connecting the door panel and the door frame is prone to deformation, aging, or even being forced open under external impact. Furthermore, due to the action of the magnet 12, one of the first locking plates 5 closest to the magnet 12 will be attracted, thus keeping the four first locking plates 5 in a position similar to... Figure 7 The effect shown is as follows, at this time Figure 7 As shown, when the user locks the door lock 7, the latch 16 extends out. The extended latch 16 cooperates with the second locking plate 9 to lock at least two first locking plates 5 between the second locking plate 9 and the latch 16, thereby limiting the sliding plate 2 and preventing it from sliding.
[0035] The terms "first," "second," and similar words used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" mean that the elements or objects preceding "comprising" cover the elements or objects listed after "comprising" or "including" and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are only used to indicate relative positional relationships, and these relative positional relationships may also change accordingly when the absolute position of the described object changes.
Claims
1. A security door, characterized in that, include: Door frame; A sliding lock plate is located on one side of the door frame and is slidably installed inside the door frame; a connecting shaft is installed inside the sliding lock plate, and the connecting shaft has a movably connected connecting sleeve; four first locking plates are fixedly connected around the connecting sleeve, and the four first locking plates are radially and evenly distributed around the connecting sleeve. A door panel is movably mounted to the door frame via hinges; the door panel is arranged parallel to the sliding lock plate; the door panel has a door lock, which has at least a latch; the latch is adjacent to the connecting shaft and is at a higher horizontal level than the connecting shaft; the door panel has a lock block fixedly connected to it, and the lock block has a second locking plate fixedly connected to it.
2. The security door according to claim 1, characterized in that, The door frame has a groove on one side, and the sliding lock plate is slidably installed in the groove.
3. The security door according to claim 1 or 2, characterized in that, The sliding lock plate has a slot on the side near the door panel, and the width of the slot is greater than the thickness of the door panel.
4. The security door according to claim 3, characterized in that, The slot contains a magnet that is fixedly connected to the sliding lock plate.
5. The security door according to claim 4, characterized in that, The first locking plate is made of iron or steel.
6. The security door according to claim 3, characterized in that, The edge of the sliding plate has a fixedly connected push-pull plate.
7. The security door according to claim 3, characterized in that, The bottom of the slide plate has movably connected rollers.