A security door
By using an X-shaped connecting mechanism, a multi-slide rail system, and honeycomb aluminum composite panels, a stable load-bearing platform and visual obstruction are achieved for the security door, solving the privacy leakage and space occupation problems in existing technologies and improving both security and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘思伟
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-29
AI Technical Summary
Existing security doors have problems such as privacy leaks, large space occupation, and structural instability when passing items.
Employing a unique X-shaped connection mechanism and multi-rail system, combined with honeycomb aluminum composite panels, it is designed as an embedded folding structure to achieve a stable load-bearing platform and visual obstruction. With the help of hook locking mechanism and spring limiting mechanism, it ensures safety and aesthetics.
It effectively solves the problems of privacy leakage and space occupation, improves anti-theft security, extends service life, and reduces maintenance costs.
Smart Images
Figure CN224300730U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of security door technology, specifically to a security door. Background Technology
[0002] A security door is a door with certain security protection performance. It is equipped with a security lock and can resist abnormal opening under certain conditions for a certain period of time. It has certain security protection performance and meets the corresponding security level. The full name of a security door is "anti-theft security door". It combines the performance of theft prevention and security.
[0003] Existing technologies, such as the "Fireproof and Anti-theft Security Door" with application number "202222414885.2", allow users to retrieve items such as takeout food through a retrieval hole. When retrieving the goods, a drive component raises the baffle. The drive component can also keep the baffle fixed in the open and closed positions, making it convenient to use. The overall structure achieves the goal of a fireproof and anti-theft security door with good security, allowing users to retrieve takeout food and express deliveries without opening the door.
[0004] The "Security Anti-theft Door" with application number "201821949809.9" blocks both sides of the receiving box, which on the one hand improves the blocking effect of the blocking plate on the receiving box, and on the other hand, blocks both sides of the receiving box so that the blocking plate applies force evenly to both sides of the receiving box, reducing the possibility that the blocking plate or the locking block is easily damaged when only one side is locked.
[0005] The application number "201821145018.0" describes a type of anti-theft door where a storage box can be placed for takeout and express delivery items, which can then be retrieved through a retrieval opening. The operation is simple and relatively quick, without the need to open the anti-theft door.
[0006] The application number "201920070898.8" describes a security door that can prevent malicious intrusion. When picking up goods, the delivery person can directly pull up the loading platform and send the goods directly into the room through the loading opening. When the goods are takeout or other items that are inconvenient to pick up, the loading platform can be rotated to flatten it. The lower end of the support rod slides to the bottom to support the loading platform. Then, the sliding plate is slid to the outside, where the delivery person can place the goods directly on the sliding plate and then slide the sliding plate to send the goods into the room. This design offers high security and effectively prevents food and other items from tipping over.
[0007] Analysis of the above technical solutions reveals that existing technologies mainly employ fixed or sliding placement slots, or open small doors on security doors, or use support rails to open the door panel. However, these technologies have the following drawbacks during use:
[0008] 1. Using a small door to retrieve outdoor items lacks a platform and inevitably involves contact with people outside. Furthermore, opening the door makes it difficult to shield the outside world, thus exposing privacy, which is not very friendly to women living alone.
[0009] 2. When using fixed or sliding placement slots, the slots protrude from the door body, thus taking up extra space and not looking aesthetically pleasing.
[0010] 3. Traditional folding mechanisms are prone to wobbling or jamming due to the lack of a stable support structure, resulting in a short service life.
[0011] Therefore, a safe and burglarproof door is proposed. Summary of the Invention
[0012] To address the problems existing in the prior art, this utility model provides a secure anti-theft door.
[0013] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0014] A security door includes a door body and a through groove:
[0015] The security door body is provided with a drawer slot corresponding to the position of the through slot, including:
[0016] The first slide rail is installed on the door body, and there are two of them. The two first slide rails are located on both sides of the through groove, and two first sliders are slidably installed inside each first slide rail.
[0017] The first panel is hinged to the security door body via hinges;
[0018] The second plate is parallel to the door body of the security door, and two first slide rails are provided on one side of it. Two first sliders are slidably arranged inside each first slide rail.
[0019] The second slide rail is set on the second plate, and a second slider is slidably arranged inside it.
[0020] The X-type connecting mechanism includes two sets of cross-hinged connecting rods, the two ends of which are respectively hinged to the first slider and the second slider;
[0021] The third slide rail is set on the second plate, and a third slider is slidably arranged inside it. The first plate is hinged to the third slider through a connecting plate.
[0022] The hook locking mechanism includes a hook disposed at the top of the second slide rail;
[0023] The spring limiting mechanism includes a spring disposed inside the first slide rail, one end of which is connected to the interior of the second slider.
[0024] Furthermore, the hook is an L-shaped metal part, with its horizontal section fixedly connected to the second slide rail, and its vertical section extending downward and engaging with the top of the first slide rail. The top of the first slide rail has a groove, and when closed, the vertical section of the hook engages with the inside of the groove to form a mechanical interlock.
[0025] Furthermore, the contact surface between the hook and the first slide rail is provided with a rubber pad, which can reduce noise when closed.
[0026] Furthermore, when the first plate is closed, it is coplanar with the door body of the security door, completely covering the through groove. When unfolded, it forms a horizontal support platform and is perpendicular to the second plate, thus blocking the line of sight.
[0027] Furthermore, the bearing surface of the first plate is provided with anti-slip texture or a detachable tray.
[0028] Furthermore, rollers are provided on the sides of the first, second, and third sliders to reduce frictional resistance during sliding.
[0029] Furthermore, both the first and second plates are made of honeycomb aluminum composite panels.
[0030] The beneficial effects of this utility model are as follows:
[0031] 1. This utility model, through the collaborative work of a unique X-shaped connecting mechanism and a multi-slide rail system, forms a stable support platform and a visual obstruction barrier when unfolded, effectively solving the privacy leakage problem of traditional delivery methods. Compared with the simple retrieval hole or exposed placement slot design in the prior art, the second plate of this solution can completely block external views, making it particularly suitable for usage scenarios with high privacy requirements. At the same time, the hook locking mechanism adopts a mechanical interlock design, combined with a spring limiting mechanism, to ensure that it cannot be easily opened from the outside when closed, greatly improving anti-theft security. This dual protection mechanism overcomes the defects of existing technologies that either focus on anti-theft while neglecting privacy or prioritize convenience while sacrificing security.
[0032] 2. This utility model adopts an innovative embedded folding structure. Through a precise first, second, and third slide rail system, the first panel can be completely flush with the door body when closed, which completely solves the problem of traditional external delivery devices protruding from the door body and affecting aesthetics. The application of honeycomb aluminum composite panel material ensures structural strength and achieves lightweight design. Compared with the fixed placement slot or protruding sliding plate in the prior art, this solution saves space to the maximum extent while maintaining the complete delivery function, making the overall appearance of the security door more concise and beautiful.
[0033] 3. This utility model ensures smooth and stable sliding through the cooperation of the T-shaped guide groove and the roller slider. The reinforcing ribs and bearing design of the X-shaped connecting mechanism effectively enhance the structural strength. The spring limiting mechanism provides precise positioning and reset functions. These designs together solve the common problems of jamming, shaking and easy damage in traditional folding mechanisms. Compared with the prior art, this solution is not only easier and smoother to operate with lower noise, but also significantly extends the service life and reduces maintenance costs. Attached Figure Description
[0034] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;
[0035] Figure 2 This is the second three-dimensional structural schematic diagram of this utility model;
[0036] Figure 3 This is an exploded structural view of the present invention;
[0037] Figure 4 This is one of the three-dimensional structural diagrams of the drawer slot of this utility model;
[0038] Figure 5 This is the second schematic diagram of the three-dimensional structure of the drawer slot of this utility model;
[0039] Figure 6 This is the third schematic diagram of the three-dimensional structure of the drawer slot of this utility model;
[0040] Figure 7 This is a schematic diagram of the second slide rail structure of this utility model;
[0041] Figure 8 This is an enlarged view of part A of this utility model;
[0042] Figure 9 This is a schematic diagram of the second slider structure of this utility model.
[0043] Reference numerals in the attached drawings: 1. Security door body; 2. Through groove; 3. Drawer groove; 4. First panel; 5. Second panel; 6. X-shaped connecting mechanism; 7. First slide rail; 701. First slider; 8. Second slide rail; 801. Second slider; 9. Third slide rail; 901. Third slider; 10. Hinge; 11. Hook locking mechanism; 12. Spring. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0046] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0047] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0048] like Figure 1-8As shown, a security door includes a door body 1 and a through groove 2. The door body 1 has a drawer groove 3 corresponding to the position of the through groove 2, including: two first slide rails 7, each located on one side of the through groove 2, and each first slide rail 7 having two sliding blocks 701 slidably disposed inside; a first plate 4, hinged to the door body 1 via a hinge 10; a second plate 5, parallel to the door body 1, with two first slide rails 7 on one side, each first slide rail 7 having two sliding blocks 701 slidably disposed inside; a second slide rail 8, mounted on the second plate 5, with a second sliding block 801 slidably disposed inside; and an X-shaped connecting mechanism 6, including... The system includes two sets of cross-hinged connecting rods, with both ends of the connecting rods hinged to the first slider 701 and the second slider 801, respectively; a third slide rail 9, mounted on the second plate 5, with the third slider 901 slidably mounted inside it, and the first plate 4 hinged to the third slider 901 via a connecting plate; a hook locking mechanism 11, including a hook mounted at the top of the second slide rail 8; and a spring limiting mechanism, including a spring 12 mounted inside the first slide rail 7, with one end of the spring 12 connected to the interior of the second slider 801; specifically, high-precision guide grooves are provided on the inner surfaces of the first slide rail 7, the second slide rail 8, and the third slide rail 9, and the outer surfaces of the sliders (first slider 701, second slider 801, and third slider 901) are machined to fit tightly against the guide grooves. The shape ensures smooth and wobbly sliding of the slider within the slide rail. For example, a T-shaped guide groove is used in conjunction with a T-shaped slider to effectively prevent the slider from derailing during sliding. Mounting holes are provided on the first slide rail 7, second slide rail 8, and third slide rail 9, allowing them to be fixed in their respective positions using bolts. Reinforcing ribs are provided at the intersection points of the two sets of cross-hinged connecting rods to enhance the structural strength and stability of the X-type connection mechanism. These reinforcing ribs can be made of the same material as the connecting rods (such as high-strength aluminum alloy) and fixed by welding or bolting. High-precision bearings are installed at the hinge points of the connecting rods to reduce frictional resistance and improve the movement flexibility and service life of the X-type connection mechanism. The outer ring of the bearing is connected to the hinge hole of the connecting rod. The inner ring is fixed to the connecting rod with screws for a tight fit. Spring seats are set at both ends of the spring 12. The spring seats are fixed to the inner wall of the first slide rail 7 and the inside of the second slider 801 with screws to ensure that the spring 12 will not shift or deform during operation, thereby improving the stability and reliability of the spring limiting mechanism. At the same time, it is convenient to disassemble and assemble the spring 12. It is necessary to check regularly whether the spring 12 of the spring limiting mechanism is aging or lacks elasticity. If so, it should be replaced in time. All structural components in the drawer slot 3 are installed inside, so there will be no exposed parts, which will prevent malicious damage. The drawer slot 3 is located at the lower part of the security door body 1, at a certain distance from the door lock, so it will not be maliciously unlocked from the inside when it is opened.
[0049] like Figure 1-4As shown, the hook is an L-shaped metal part. Its horizontal section is fixedly connected to the second slide rail 8, and its vertical section extends downward and is engaged with the top of the first slide rail 7. The top of the first slide rail 7 has a groove. When closed, the vertical section of the hook is engaged with the inside of the groove to form a mechanical interlock. Specifically, an adjustable fastening nut is provided at the connection between the horizontal section of the hook and the second slide rail 8. By rotating the fastening nut, the tightness of the connection between the hook and the second slide rail 8 can be adjusted to ensure that the hook will not loosen during use and improve the reliability of the locking mechanism.
[0050] like Figure 1-7 As shown, a rubber pad is provided on the contact surface between the hook and the first slide rail 7 to reduce noise when closed. Specifically, the shape of the rubber pad should perfectly fit the contact surface between the hook and the first slide rail 7. For example, if the vertical section of the hook is rectangular, the rubber pad should also be designed to be rectangular, and the size should be precisely matched to ensure that the rubber pad can be evenly stressed when the hook is inserted into the groove. The rubber pad can be fixed to the contact surface of the hook or the first slide rail 7 by means of adhesive, snap-fit, or screws. If it is installed on the hook, the rubber pad will move with the hook, making installation and replacement relatively convenient. If it is installed inside the groove of the first slide rail 7, the rubber pad is fixed to the first slide rail 7, which can reduce the wear of the rubber pad during the movement of the hook.
[0051] like Figure 1-6 As shown, the first panel 4 is coplanar with the door body 1 when closed, completely covering the through groove 2. When unfolded, it forms a horizontal support platform and is perpendicular to the second panel 5 to form a visual barrier. Specifically, the first panel 4 and the second panel 5 should be perpendicular when unfolded to form an effective visual barrier. This design can prevent outsiders from peeping into the room through the through groove 2 and improve privacy.
[0052] like Figure 1-6 As shown, the bearing surface of the first plate 4 is provided with anti-slip texture or a detachable tray; specifically, the anti-slip texture can adopt a triangular or diamond pattern, which can effectively increase friction and prevent items from sliding; the tray can be made of high-strength plastic or stainless steel, which has good load-bearing capacity and corrosion resistance. The tray can be fixed to the bearing surface of the first plate 4 by means of buckles or bolts, which is convenient for users to disassemble and clean at any time as needed. The size of the tray should be adapted to the bearing surface of the first plate 4 to ensure its stability.
[0053] like Figure 8As shown, rollers are provided on the sides of the first slider 701, the second slider 801, and the third slider 901 to reduce frictional resistance during sliding. Specifically, the rollers can be fixed to the sliders (first slider 701, second slider 801, and third slider 901) by bolts to ensure close contact between the rollers and the slide rails (first slide rail 7, second slide rail 8, and third slide rail 9). By adjusting the position and angle of the rollers, the sliders can run smoothly on the guide rails and reduce shaking.
[0054] like Figure 1-6 As shown, the first plate 4 and the second plate 5 are made of honeycomb aluminum composite panel material; specifically, honeycomb aluminum composite panel material has the characteristics of light weight, high strength, heat insulation, sound insulation, fire resistance and water resistance, which can meet the requirements of load-bearing platform and sight shielding. The surface of honeycomb aluminum composite panel can be painted or film-coated to improve its aesthetics and corrosion resistance.
[0055] In summary: When taking out food, drawer 3 needs to be opened. At this time, gently lifting the second panel 5 will stretch the spring 12, causing the vertical section of the hook to disengage from the groove on the first slide rail 7. Then, pull the second panel 5 outwards. During this unfolding process, the first panel 4 will rotate around the hinge 10, simultaneously causing the connecting plate and the third slider 901 to slide within the third slide rail 9. The two sets of cross-hinged connecting rods of the X-shaped connecting mechanism 6 move accordingly, pushing the first slider 701 and the second slider 801 to slide within the first slide rail 7 and the second slide rail 8 respectively, until the first panel 4 is horizontal, forming a support platform. The second panel 5, under the action of the X-shaped connecting mechanism 6, remains parallel to the security door 1 and forms a visual obstruction. Items located outdoors can be passed indoors through the through slot 2. After placing takeout or other items on the support platform formed by the first panel 4, people indoors can retrieve the items without opening the security door 1. To close, gently lift the bottom side upwards, simultaneously pushing the second plate 5 towards the door body 1, causing the X-shaped connecting mechanism 6 to retract. This ultimately makes the first plate 4 coplanar with the door body 1, completely covering the through slot 2. The L-shaped hook of the hook locking mechanism 11 engages with the groove at the top of the first slide rail 7, forming a mechanical interlock, thus closing the drawer slot 3. At this point, the drawer slot 3 is compressed into a flat surface, taking up almost no space when folded. Simultaneously, the first plate 4 seals the through slot 2, preventing outsiders from canceling the locking function of the hook locking mechanism 11 by lifting the second plate 5, ensuring locking security. In the unfolded state, it conceals the through slot 2, preventing external intrusion and privacy exposure. It also serves as a support for objects, preventing physical contact with outsiders. In the folded state, it seals the through slot 2, preventing outsiders from maliciously unlocking it with tools. After folding, it fits snugly against the door body 1, not occupying much space and being more aesthetically pleasing.
[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A security door, comprising a door body (1) and a through groove (2), characterized in that: The security door body (1) is provided with a drawer slot (3) corresponding to the position of the through slot (2), including: The first slide rail (7) is set on the door body (1) of the security door. There are two of them. The two first slide rails (7) are located on both sides of the through groove (2). Each first slide rail (7) has two first sliders (701) slidably installed inside. The first plate (4) is hinged to the door body (1) of the security door via a hinge (10); The second plate (5) is parallel to the door body (1) of the security door, and two first slide rails (7) are provided on one side of it. Two first sliders (701) are slidably provided inside each first slide rail (7). The second slide rail (8) is set on the second plate (5), and a second slider (801) is slidably set inside it. The X-type connecting mechanism (6) includes two sets of cross-hinged connecting rods, the two ends of which are respectively hinged to the first slider (701) and the second slider (801); The third slide rail (9) is set on the second plate (5), and a third slider (901) is slidably set inside it. The first plate (4) is hinged to the third slider (901) through a connecting plate. The hook locking mechanism (11) includes a hook disposed at the top of the second slide rail (8); The spring limiting mechanism includes a spring (12) disposed inside the first slide rail (7), one end of which is connected to the interior of the second slider (801).
2. A security door according to claim 1, characterized in that, The hook is an L-shaped metal part. Its horizontal section is fixedly connected to the second slide rail (8), and its vertical section extends downward and is engaged with the top of the first slide rail (7). The top of the first slide rail (7) has a groove. When closed, the vertical section of the hook is engaged with the inside of the groove to form a mechanical interlock.
3. A security door according to claim 1, characterized in that, The contact surface between the hook and the first slide rail (7) is provided with a rubber pad, which can reduce noise when closed.
4. A security door according to claim 1, characterized in that, When the first plate (4) is closed, it is coplanar with the door body (1) of the security door and completely covers the through groove (2). When it is unfolded, it is horizontal and forms a bearing platform, and is perpendicular to the second plate (5) to form a visual obstruction.
5. A security door according to claim 1, characterized in that, The bearing surface of the first plate (4) is provided with anti-slip texture or a detachable tray.
6. A security door according to claim 1, characterized in that, The first slider (701), the second slider (801) and the third slider (901) are provided with rollers on their sides to reduce the frictional resistance during sliding.
7. A security door according to claim 1, characterized in that, The first plate (4) and the second plate (5) are made of honeycomb aluminum composite material.