A steel entry door resistant to violent opening
By combining a limit mechanism and a pressure sensor with an electric telescopic rod and a plug rod, the safety problem of traditional locks when forcibly opened is solved, resulting in a steel entrance door that is resistant to forced entry and improves home security.
Patent Information
- Application Number
- CN202521855702.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-29
AI Technical Summary
Traditional mechanical locks have significant shortcomings in resisting forced entry. Once the lock is damaged, the entrance door cannot provide protection, and personal safety cannot be guaranteed.
It employs a limit mechanism and pressure sensor, and through the cooperation of electric telescopic rod and insertion rod, achieves a tight connection between the door frame and the door body. It is also equipped with sound sensor and vibration sensor to detect forced opening, thereby enhancing security.
When forced open, the insertion rod quickly inserts into the limiting mechanism, providing stable support, improving door security, preventing door deformation, and meeting usage needs under various conditions.
Smart Images
Figure CN224679393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of entrance door technology, and in particular to a steel entrance door resistant to forced entry. Background Technology
[0002] In recent years, the security performance of front doors, as the first line of defense for families, has received increasing attention. Traditional mechanical locks have significant shortcomings in resisting forced entry. According to statistics from the Ministry of Public Security, in 2024, 80% of burglaries involving technical lock picking were committed through ordinary security doors.
[0003] Furthermore, some forced entry methods involve damaging the door lock through a device. This damage is quiet and not easily detected. Since the door and door frame are only connected by the lock, once the lock is damaged, the entrance door can no longer provide protection, and personal safety cannot be guaranteed. Utility Model Content
[0004] This utility model discloses a steel entrance door resistant to forced entry, aiming to solve the technical problem that the entrance door cannot provide protection when the door and door frame are only connected by a door lock, and personal safety cannot be guaranteed when the door lock is damaged.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A steel entrance door resistant to forced entry includes a door body, and further includes: two sets of limiting mechanisms, symmetrically fixedly installed on the inner wall of the door body, with an inspection port opened on one side of the limiting mechanism on the door body; a side support mechanism, fixedly embedded in the door frame; a door lock, fixedly installed on the inner wall of the door body, and a pressure sensor fixedly installed on the door lock; and multiple through holes, which are arranged through one side of the door body.
[0007] The limiting mechanism includes: an electric telescopic rod, fixedly connected to the inner wall of the door; a T-shaped support plate, fixedly connected to the output end of the electric telescopic rod, and having multiple circular through holes through the T-shaped support plate; multiple insert rods, movably inserted into the multiple through holes, and each insert rod has a circular support plate fixedly connected to its outer periphery, the diameter of the multiple circular support plates being smaller than the diameter of the multiple circular through holes; and multiple springs, wound around the outside of each insert rod, and fixedly connected between the circular support plate and the inner wall of the door.
[0008] The limiting mechanism further includes: a first groove, in which an electric telescopic rod is fixedly connected, and multiple springs are simultaneously located within the first groove, with one end of each spring fixedly connected to the inner wall of the first groove; and a second groove, which is located on the inner wall of the door and on one side of the first groove.
[0009] The door lock includes: a lock head, on one side of which a square rod is fixedly connected to the outer wall; a transmission plate, which is movably engaged with the square rod; a limit rod, one end of which is fixedly linked to an external torque handle, and the limit rod passes through the transmission plate, and a pressure sensor is fixedly connected to the limit rod.
[0010] By incorporating a limit mechanism and a pressure sensor, when the pressure sensor detects a forced opening from the door lock position, multiple rods are quickly inserted into the limit mechanism. Stable support is provided by the upper and lower sides of the door lock, achieving a tighter connection between the door frame and the door body, thereby achieving the purpose of resisting forced opening and greatly improving home security.
[0011] In a preferred embodiment, the side support mechanism includes: an inlay frame, which is fixedly inlaid in the inner wall of the door frame, and its installation position corresponds exactly to the installation position of the limiting mechanism; and an iron frame, which is fixedly inlaid in the inner wall of the inlay frame.
[0012] The side support mechanism further includes: an alloy honeycomb plate, which is fixedly connected to the inner wall of the inlay frame and its depth is less than the depth of the inlay frame; multiple limiting holes are set in the alloy honeycomb plate and multiple insert rods are movably inserted into the limiting holes;
[0013] The side support mechanism further includes: a magnetic frame, which is magnetically adsorbed onto the inner wall of the iron frame; and a membrane cloth, which is fixedly connected to the inner wall of the magnetic frame and covers the outer side of the alloy honeycomb plate.
[0014] With the side support mechanism and the stability of the honeycomb structure, stability can be guaranteed even under strong and violent opening conditions. The membrane cloth prevents dust from entering and clogging the membrane. At the same time, the magnetic attachment of the magnetic frame and the iron frame makes it easy to replace the membrane cloth when it is damaged, and the operation is simple.
[0015] In a preferred embodiment, the limiting mechanism further includes: a partition plate, fixedly connected between groove one and groove two, with multiple insert rods simultaneously moving through the partition plate; a sound sensor and a vibration sensor are respectively fixedly installed in groove two of each limiting mechanism.
[0016] By incorporating sound and vibration sensors, the door can be opened not only by damage to the lock itself but also by forceful actions such as hammering or smashing. The sound and vibration sensors detect the sound and vibration of these violent actions, providing a rapid response and enabling the anti-violence structure to meet various usage conditions.
[0017] As described above, a steel entrance door resistant to forced entry includes a door body and: two sets of limiting mechanisms symmetrically fixedly installed on the inner wall of the door body, with an inspection port on one side of the limiting mechanisms on the door body; a side support mechanism fixedly embedded in the door frame; a door lock fixedly installed on the inner wall of the door body, with a pressure sensor fixedly installed on the door lock; and multiple through holes extending through one side of the door body. The limiting mechanisms include: an electric telescopic rod fixedly connected to the inner wall of the door body; a T-shaped support plate fixedly connected to the output end of the electric telescopic rod, with multiple circular through holes extending through the T-shaped support plate; multiple insert rods movably inserted into the multiple through holes, with a circular support plate fixedly connected to the outer periphery of each insert rod, the diameter of the multiple circular support plates being smaller than the diameter of the multiple circular through holes; and multiple springs wound around each insert rod and fixedly connected between the circular support plate and the inner wall of the door body. The steel entrance door resistant to forced entry provided by this utility model achieves the purpose of resisting forced entry, greatly improving home security. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a steel entrance door resistant to forced entry proposed in this utility model.
[0019] Figure 2 This is a schematic diagram of the internal structure of a steel entrance door resistant to forced entry, as proposed in this utility model.
[0020] Figure 3 This is a schematic diagram showing the disassembled side support mechanism of a steel entrance door designed to resist violent opening, as proposed in this utility model.
[0021] Figure 4 This is a schematic diagram showing the disassembled limiting mechanism of a steel entrance door designed to resist violent opening, as proposed in this utility model.
[0022] Figure 5 This is a schematic diagram of the locking structure of a steel entrance door that is resistant to violent opening, as proposed in this utility model.
[0023] In the attached diagram: 1. Door body; 2. Side support mechanism; 3. Lock head; 4. Perforation; 5. Limiting mechanism; 6. Vibration sensor; 7. Sound sensor; 8. Square rod; 9. Transmission plate; 10. Pressure sensor; 11. Limiting rod; 201. Inlay frame; 202. Iron frame; 203. Alloy honeycomb panel; 204. Magnetic frame; 205. Membrane cloth; 501. Electric telescopic rod; 502. T-shaped support plate; 503. Insert rod; 504. Circular support plate; 505. Spring; 506. Groove one; 507. Partition plate; 508. Circular perforation; 509. Groove two. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] The steel entrance door disclosed in this utility model is mainly used in scenarios where entrance doors are designed to resist forced entry.
[0026] Reference Figures 1-5 A steel entrance door resistant to forced entry, comprising a door body 1, and further comprising:
[0027] Two sets of limiting mechanisms 5 are symmetrically fixedly installed on the inner wall of the door body 1, and an inspection port is opened on one side of the door body 1 located at the limiting mechanism 5.
[0028] Side support mechanism 2 is fixedly embedded in the door frame;
[0029] A door lock is fixedly installed on the inner wall of the door body 1, and a pressure sensor 10 is fixedly installed on the door lock;
[0030] Multiple perforations 4 are provided through one side of the door body 1;
[0031] Limiting mechanism 5 includes:
[0032] The electric telescopic rod 501 is fixedly connected to the inner wall of the door body 1;
[0033] T-shaped support plate 502 is fixedly connected to the output end of electric telescopic rod 501, and multiple circular through holes 508 are provided through the T-shaped support plate 502.
[0034] Multiple insert rods 503 are movably inserted into multiple through holes 4, and each insert rod 503 is fixedly connected to a circular support plate 504 on its outer periphery. The diameter of the multiple circular support plates 504 is smaller than the diameter of the multiple circular through holes 508.
[0035] Multiple springs 505 are wound around each insertion rod 503 and fixedly connected between the circular support plate 504 and the inner wall of the door body 1. When the pressure sensor 10 senses that the door is forcibly opened from the lock position, it controls the electric telescopic rod 501 to quickly drive the T-shaped support plate 502 to move longitudinally. Under the rapid rebound of the springs 505, the circular support plate 504 on the multiple insertion rods 503 can smoothly pass through the circular through hole 508. At this time, the multiple insertion rods 503 are quickly inserted into the limiting mechanism 5, and the upper and lower sides of the door lock provide stable support, realizing a further tight connection between the door frame and the door body 1, thereby achieving the purpose of resisting forced opening and greatly improving home security.
[0036] Reference Figure 4 In a preferred embodiment, the limiting mechanism 5 further includes:
[0037] The electric telescopic rod 501 is fixedly connected in the groove 506, and multiple springs 505 are located in the groove 506 at the same time. One end of the spring 505 is fixedly connected to the inner wall of the groove 506.
[0038] Groove 2 509 is provided on the inner wall of door body 1 and is located on one side of groove 1 506.
[0039] Reference Figure 2 and Figure 4 In a preferred embodiment, the limiting mechanism 5 further includes:
[0040] The partition 507 is fixedly connected between the first groove 506 and the second groove 509, and multiple insert rods 503 are simultaneously inserted into the partition 507.
[0041] A sound sensor 7 and a vibration sensor 6 are fixedly installed in the groove 509 of each set of limiting mechanisms 5. In addition to damage caused by the door lock position, there may also be violent opening actions such as hammering or smashing. At this time, the sensing result of the pressure sensor 10 cannot respond to the violent opening in time. The sound sensor 7 and the vibration sensor 6 sense the sound and vibration of the violent action respectively. When the sound and vibration are monitored at the same time, it can be determined that it is a violent opening. Similarly, the limiting mechanism 5 is activated to prevent the door body 1 from deforming. Later, the limiting mechanism 5 cannot match the position of the side support mechanism 2, so that the anti-violent structure can meet the use under various conditions.
[0042] Reference Figure 5 In a preferred embodiment, the door lock includes:
[0043] The lock cylinder 3 has a square rod 8 fixedly connected to one of its outer walls;
[0044] Transmission plate 9 is movably engaged with square rod 8;
[0045] The limit rod 11 has an external torque handle fixedly linked to one end, and the limit rod 11 passes through the transmission plate 9. The pressure sensor 10 is fixedly connected to the limit rod 11.
[0046] Reference Figure 3 In a preferred embodiment, the side support mechanism 2 includes:
[0047] The inlay frame 201 is fixedly inlaid on the inner wall of the door frame, and its installation position corresponds exactly to the installation position of the limiting mechanism 5.
[0048] The iron frame 202 is fixedly embedded in the inner wall of the inlay frame 201.
[0049] Reference Figure 3 In a preferred embodiment, the side support mechanism 2 further includes:
[0050] Alloy honeycomb panel 203 is fixedly connected to the inner wall of inlay frame 201, and its depth is less than the depth of inlay frame 201;
[0051] Multiple limiting holes are set inside the alloy honeycomb plate 203, and multiple insert rods 503 are movably inserted into the limiting holes.
[0052] Reference Figure 3 In a preferred embodiment, the side support mechanism 2 further includes:
[0053] The magnetic frame 204 is magnetically attached to the inner wall of the iron frame 202;
[0054] The membrane cloth 205 is fixedly connected to the inner wall of the magnetic frame 204 and covers the outer side of the alloy honeycomb plate 203. The alloy honeycomb plate 203 allows multiple insert rods 503 to be inserted into it. Based on the stability of the honeycomb structure, it can ensure stability under strong force opening environment. The membrane cloth 204 can cover the outside of the alloy honeycomb plate 203 during daily use to prevent dust from entering and clogging. When the insert rod 503 is inserted, the membrane cloth 204 can be easily broken without causing obstruction. At the same time, the magnetic attraction between the magnetic frame 204 and the iron frame 202 also makes it easy to replace the membrane cloth 204 when it is damaged. The operation is simple.
[0055] Working principle: When the pressure sensor 10 detects a forced opening from the door lock position, it controls the electric telescopic rod 501 to quickly drive the T-shaped support plate 502 to move longitudinally. Under the rapid rebound of the spring 505, the circular support plates 504 on the multiple insertion rods 503 can smoothly pass through the circular through holes 508. At this time, the multiple insertion rods 503 are quickly inserted into the limiting mechanism 5, and the upper and lower sides of the door lock provide stable support, realizing a further tight connection between the door frame and the door body 1, thereby achieving the purpose of resisting forced opening and greatly improving home security.
[0056] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A steel entrance door resistant to forced entry, comprising a door body (1), characterized in that, Also includes: Two sets of limiting mechanisms (5) are symmetrically fixedly installed on the inner wall of the door body (1), and an inspection port is opened on one side of the door body (1) located at the limiting mechanism (5); Side support mechanism (2) is fixedly embedded in the door frame; A door lock is fixedly installed on the inner wall of the door body (1), and a pressure sensor (10) is fixedly installed on the door lock; Multiple perforations (4) are provided through one side of the door body (1); The limiting mechanism (5) includes: An electric telescopic rod (501) is fixedly connected to the inner wall of the door (1); The T-shaped support plate (502) is fixedly connected to the output end of the electric telescopic rod (501), and multiple circular through holes (508) are provided through the T-shaped support plate (502); Multiple insert rods (503) are movably inserted into multiple through holes (4), and each insert rod (503) is fixedly connected to a circular support plate (504) on its outer periphery. The diameter of the multiple circular support plates (504) is smaller than the diameter of the multiple circular through holes (508). Multiple springs (505) are wound around each insert (503) and fixedly connected between the circular support plate (504) and the inner wall of the door (1).
2. A steel entrance door resistant to forced entry according to claim 1, characterized in that, The limiting mechanism (5) also includes: The first groove (506) is fixedly connected to the electric telescopic rod (501), and multiple springs (505) are located in the first groove (506) at the same time. One end of the spring (505) is fixedly connected to the inner wall of the first groove (506). The second groove (509) is provided on the inner wall of the door body (1) and is located on one side of the first groove (506).
3. A steel entrance door resistant to forced entry according to claim 2, characterized in that, The limiting mechanism (5) also includes: The partition (507) is fixedly connected between the first groove (506) and the second groove (509), and multiple insert rods (503) are simultaneously inserted into the partition (507); A sound sensor (7) and a vibration sensor (6) are respectively fixedly installed in the groove 2 (509) of each group of limiting mechanisms (5).
4. A steel entrance door resistant to forced entry according to claim 1, characterized in that, The door lock includes: The lock head (3) has a square rod (8) fixedly connected to one side of its outer wall; The transmission plate (9) is movably engaged with the square rod (8); The limiting rod (11) has an external torque handle fixedly linked to one end, and the limiting rod (11) passes through the transmission plate (9). The pressure sensor (10) is fixedly connected to the limiting rod (11).
5. A steel entrance door resistant to forced entry according to claim 1, characterized in that, The side support mechanism (2) includes: The inlay frame (201) is fixedly inlaid on the inner wall of the door frame, and its installation position corresponds exactly to the installation position of the limiting mechanism (5). The iron frame (202) is fixedly inlaid on the inner wall of the inlay frame (201).
6. A steel entrance door resistant to forced entry according to claim 5, characterized in that, The side support mechanism (2) also includes: Alloy honeycomb panel (203) is fixedly connected to the inner wall of the inlay frame (201), and its depth is less than the depth of the inlay frame (201); Multiple limiting holes are set inside the alloy honeycomb plate (203), and multiple insert rods (503) are movably inserted into the limiting holes.
7. A steel entrance door resistant to forced entry according to claim 6, characterized in that, The side support mechanism (2) also includes: The magnetic frame (204) is magnetically attached to the inner wall of the iron frame (202); The membrane (205) is fixedly connected to the inner wall of the magnetic frame (204) and covers the outer side of the alloy honeycomb panel (203).