Bulletproof and prying-proof door for military barracks

CN122407056BActive Publication Date: 2026-09-29FUJIAN RUIYI CONSTR CO LTD
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Patent Information

Application Number
CN202610896739.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-06-22
Publication Date
2026-09-29
Estimated Expiration
2046-06-22

AI Technical Summary

Technical Problem

这种联动设计虽能实现高效闭锁,但也存在明显缺陷:两组插销与锁体之间通过刚性连接件(如连杆或齿轮)直接耦合,彼此缺乏独立的防护机制

Benefits of technology

[0020]本发明具有以下有益效果:本发明通过设置外防护门和内防护门形成双重防护结构,解决了单组门体防护等级低、易被快速击穿的问题,为内部人员争取了宝贵的应急反应时间,同时利用限位组件中的限位杆插入销杆侧面的卡槽,在锁体遭受暴力破坏后仍能锁定销杆位置,有效避免插销退回解锁,克服了传统刚性连接锁体一旦破坏即完全失效的缺陷,此外,通过传动组件联动挡板与限位板,实现内外门的二次互锁,显著提升了整体防弹防撬性能。

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Abstract

The application discloses a bulletproof and pryproof door for military barracks and relates to the technical field of protective doors. The bulletproof and pryproof door comprises a door frame and a door frame, the inside of the door frame is movably connected with an outer protective door, and the inside of the door frame is movably connected with an inner protective door; locking assemblies are arranged in the outer protective door and the inner protective door. The outer protective door and the inner protective door form a double protective structure, the problem of low protection level of a single door body and easy fast penetration is solved, the valuable emergency response time of internal personnel is ensured, the limiting rod in the limiting assembly is inserted into the clamping groove on the side of the pin rod, the position of the pin rod can be locked after the lock body is subjected to violent damage, the pin rod is effectively prevented from being withdrawn and unlocked, the defect that the traditional rigidly connected lock body is completely invalid once damaged is overcome, in addition, the transmission assembly is used to link the baffle and the limiting plate, the secondary interlocking of the inner door and the outer door is realized, and the bulletproof and pryproof performance of the whole door is obviously improved.
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Description

Technical Field

[0001] This invention belongs to the field of protective door technology, and in particular relates to a bulletproof and pry-resistant door for military barracks. Background Technology

[0002] Military barracks doors are typically made of steel or composite fire-resistant materials, possessing characteristics such as durability, fire resistance, theft prevention, sound insulation, and heat insulation. The door design emphasizes airtightness and security, and is often equipped with multi-point locking devices, anti-pry edges, and observation windows. Some special locations (such as ammunition depots and communication equipment rooms) also have electromagnetic shielding or explosion-proof functions.

[0003] A Chinese patent application (or patent) with publication number CN213234790U discloses a bulletproof door, including a door body, handles respectively disposed on opposite sides of the door body, and a door frame hinged to one side of the door body. The upper and lower ends of the door body are slidably connected with pins in the vertical direction and the free side in the horizontal direction. The door frame is provided with insertion holes for the pins to be inserted and engaged. The door body is provided with a linkage mechanism for driving the pins at the upper and lower ends of the door body and the free side to move and insert into the corresponding insertion holes simultaneously. The two handles are connected to the linkage mechanism to drive the linkage mechanism to move.

[0004] However, the above-mentioned device still has the following problems during implementation: After the door is fully closed, the transmission mechanism inside the lock body rotates, simultaneously causing two sets of bolts to extend laterally and precisely insert into the corresponding keyholes in the door frame, thus firmly locking the door to the frame. While this linkage design achieves efficient locking, it also has significant drawbacks: the two sets of bolts are directly coupled to the lock body via rigid connecting parts (such as linkages or gears), lacking independent protection mechanisms. If the lock body is subjected to violent damage (such as prying, cutting, or drilling), the connecting parts will break or shift, causing the two sets of bolts to instantly return to the unlocked position, completely losing their locking function.

[0005] A Chinese patent application (or patent) with publication number CN212079087U discloses a bulletproof door, including a door frame, a door body, an observation window, and an anti-theft lock. The door body is installed inside the door frame via concealed hinges. The anti-theft lock is installed in the middle of the left side of the door body, and the observation window is located near the upper part of the door body. This patent uses bulletproof steel plates and Kevlar bulletproof fiber mesh, providing double bulletproof protection plus a buffer layer for cushioning protection, effectively preventing bullet penetration. The observation window consists of a round tube and bulletproof glass.

[0006] However, the above-mentioned device still has the following problems during implementation: After the door frame is installed, only a single door unit provides security. Once subjected to external force, the door unit can be damaged extremely quickly, often becoming ineffective within seconds. At this point, the time window for people inside to notice the abnormality and react is extremely short, making it difficult to take emergency evasive action, call for help, or organize resistance. This can easily lead to casualties or loss of control of critical facilities.

[0007] To address this issue, we have developed a bulletproof and tamper-proof door for military barracks. Summary of the Invention

[0008] The purpose of this invention is to provide a bulletproof and anti-pry door for military barracks. Through the structural cooperation of locking components, limiting components and transmission components, it solves the problem that existing bulletproof doors use a single door body, which has a low protective effect. Moreover, after the door body is closed, the rotation of the lock body drives two sets of bolts to insert into the door frame to lock the door body. However, the two sets of bolts are connected to the lock body, so once the lock body is damaged, the bolts will lose their function.

[0009] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0010] This invention relates to a bulletproof and pry-resistant door for military barracks, comprising a door frame and a door frame. An outer protective door is movably connected inside the door frame, and an inner protective door is movably connected inside the door frame. Both the outer and inner protective doors are equipped with locking components. Each locking component includes a lock body installed inside the outer and inner protective doors, a rotating rod mounted on the surface of the lock body, an adjusting rod movably connected to both ends of the rotating rod, and a pin movably connected to the other end of the adjusting rod. The locking components lock the inner and outer protective doors. A limit switch is provided on one side of the door frame. The limiting component includes a slot on one side of the pin, a limiting rod on one side of the slot, a rotating shaft movably connected inside the gantry, a baffle mounted on the surface of the rotating shaft, a snap-fit ​​plate mounted on one side of the inner protective door, and a connecting shaft movably connected inside the door frame. The limiting component limits the movement of the outer and inner protective doors. A transmission component is provided inside the door frame. The transmission component includes a first gear mounted on the surface of the rotating shaft and a first toothed plate meshing with one side of the first gear. The transmission component provides driving force for the movement of the limiting rod.

[0011] The invention is further configured such that the locking component includes a limiting hole formed inside the door frame and door frame, and the pin is adapted to the limiting hole.

[0012] The present invention is further configured such that the limiting component also includes a limiting plate mounted on the surface of the connecting shaft and a limiting groove formed on one side of the outer protective door.

[0013] The present invention is further configured such that the transmission assembly includes two sets of second toothed plates installed on the top and bottom of the first toothed plate, a second gear installed on the surface of the connecting shaft, a slide groove opened inside the door frame, a slider slidably connected inside the slide groove, a crossbar installed inside the slider, and a push plate installed at one end of the crossbar meshing with the second gear on one side of the second toothed plate.

[0014] The invention is further configured such that the other end of the crossbar is fixedly connected to the limiting rod, a spring is sleeved on the surface of the crossbar, one end of the spring is fixedly connected to the slider, and the push plate is slidably connected to the inner wall of the limiting groove.

[0015] The invention is further configured such that one side of the limiting plate is slidably connected to the push plate, and both the outer protective door and the inner protective door are made of bulletproof steel plate, with glass fiber and ceramic composite plate embedded inside the bulletproof steel plate, which can improve the bulletproof effect.

[0016] The invention is further configured such that an observation window is provided on one side of the outer protective door, and a protective grille is installed inside the observation window.

[0017] The present invention is further configured such that an observation shell is installed inside the inner protective door, and bulletproof glass is installed inside the observation shell.

[0018] The present invention is further configured such that a guide rail plate is installed on one side of the observation shell, and a sealing plate is slidably connected inside the guide rail plate.

[0019] The present invention is further configured such that a limiting shell is installed on one side of the gantry, and the bottom of the baffle is inserted into the limiting shell.

[0020] The present invention has the following beneficial effects: By setting up an outer protective door and an inner protective door to form a double protective structure, the present invention solves the problem of low protection level of a single door and easy to be quickly penetrated, thus buying valuable emergency response time for internal personnel. At the same time, by using the limit rod in the limit component to insert into the slot on the side of the pin, the pin position can still be locked after the lock body is violently damaged, effectively preventing the pin from returning to unlock, and overcoming the defect of traditional rigid connection lock body that is completely ineffective once damaged. In addition, by linking the baffle and the limit plate through the transmission component, the inner and outer doors are interlocked, which significantly improves the overall bulletproof and pry-proof performance.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional diagram of a bulletproof and tamper-proof door used in military barracks.

[0024] Figure 2 This is a rear view of a bulletproof and tamper-proof door used in military barracks.

[0025] Figure 3 This is a side view of the outer and inner protective doors of a bulletproof and tamper-proof door used in military barracks.

[0026] Figure 4 This is a partial sectional view of the door frame and door structure of a bulletproof and tamper-proof door used in military barracks.

[0027] Figure 5 This is a schematic diagram of the locking component in a bulletproof and tamper-proof door used in military barracks.

[0028] Figure 6 This is a schematic diagram of the transmission component in a bulletproof and tamper-proof door used in military barracks.

[0029] Figure 7 This is a schematic diagram of the internal structure of a sliding groove in a bulletproof and tamper-proof door used in military barracks.

[0030] Figure 8 This is a schematic diagram showing the connection between the slot and the limit rod in a bulletproof and tamper-proof door used in military barracks.

[0031] Figure 9 This is a schematic diagram of the internal structure of the door frame in a bulletproof and tamper-proof door used in military barracks.

[0032] Figure 10 This is a schematic diagram showing the connection between the observation shell and the bulletproof glass in a bulletproof and tamper-proof door used in military barracks.

[0033] In the attached diagram: 1. Door frame; 2. Door frame; 3. Outer protective door; 4. Inner protective door; 5. Locking assembly; 51. Lock body; 52. Rotating rod; 53. Adjusting rod; 54. Pin; 6. Limiting assembly; 61. Slot; 62. Limiting rod; 63. Rotating shaft; 64. Baffle; 65. Connecting plate; 66. Connecting shaft; 67. Limiting plate; 68. Limiting groove; 7. Transmission assembly; 71. First gear; 72. First toothed plate; 73. Second toothed plate; 74. Second gear; 75. Slide groove; 76. Slider; 77. Crossbar; 78. Push plate; 55. Limiting hole; 8. Spring; 9. Observation window; 10. Protective grille; 11. Observation shell; 12. Bulletproof glass; 13. Guide rail plate; 14. Sealing plate; 15. Limiting shell. Detailed Implementation

[0034] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1

[0035] Please see Figures 1-10 This invention relates to a bulletproof and pry-resistant door for military barracks, comprising a door frame 1 and a door frame 2. An outer protective door 3 is movably connected inside the door frame 1, and an inner protective door 4 is movably connected inside the door frame 2. Both the outer and inner protective doors 3 and 4 are equipped with locking components 5. Each locking component 5 includes a lock body 51 installed inside the outer and inner protective doors 3 and 4, a rotating rod 52 installed on the surface of the lock body 51, an adjusting rod 53 movably connected to both ends of the rotating rod 52, and a pin 54 movably connected to the other end of the adjusting rod 53. The locking components 5 lock the inner and outer protective doors 4 and 3. A limit component 6 is provided on one side of the door frame 2 for limiting movement. Component 6 includes a slot 61 on one side of the pin 54, a limiting rod 62 on one side of the slot 61, a rotating shaft 63 movably connected inside the gantry 2, a baffle 64 mounted on the surface of the rotating shaft 63, a snap-fit ​​plate 65 mounted on one side of the inner protective door 4, and a connecting shaft 66 movably connected inside the door frame 1. The limiting component 6 limits the movement of the outer protective door 3 and the inner protective door 4. A transmission component 7 is provided inside the door frame 1. The transmission component 7 includes a first gear 71 mounted on the surface of the rotating shaft 63 and a first toothed plate 72 meshing with one side of the first gear 71. The transmission component 7 provides driving force for the movement of the limiting rod 62.

[0036] Specifically: Door frame 1 is fixedly installed in the wall opening; door frame 2 serves as the mounting carrier for inner protective door 4, forming a double protective structure in conjunction with door frame 1. It is pre-embedded inside the building during use. Outer protective door 3 serves as the first line of defense, opening outwards to resist external violent impacts and ballistic attacks. When damaged, it can dissipate attack energy and buy valuable reaction time for those inside. Inner protective door 4 serves as the second line of defense after outer protective door 3 is penetrated or destroyed, continuing to provide protection and forming a double safety barrier. It opens inwards during use. Rotating rod 52 is installed on the surface of lock body 51 and rotates with lock body 51, with symmetrical connections at both ends. The adjusting rod 53 converts the rotational motion of the lock body 51 into a bidirectional linear thrust, enabling the two sets of pins 54 to move synchronously in opposite directions, achieving rapid locking or unlocking. One end of the adjusting rod 53 is movably connected to the rotating rod 52, and the other end is movably connected to the pin 54. As a power transmission component, it can accurately convert the rotation angle of the rotating rod 52 into the displacement stroke of the pin 54. The slot 61 is opened on one side of the pin 54 and is in the shape of a groove. When the limiting rod 62 is inserted into the slot 61, it can restrict the axial movement of the pin 54. Even if the lock body 51 is damaged and the adjusting rod 53 fails, the pin 54 cannot return to the unlocked position, thus maintaining the locking function. Example 2

[0037] Please see Figures 1-10Based on embodiment 1, the locking component 5 further includes a limiting hole 55 opened inside the door frame 1 and the door frame 2, and the pin 54 is adapted to the limiting hole 55. The limiting component 6 further includes a limiting plate 67 installed on the surface of the connecting shaft 66 and a limiting groove 68 opened on one side of the outer protective door 3. The transmission component 7 further includes two sets of second tooth plates 73 installed on the top and bottom of the first tooth plate 72, a second gear 74 installed on the surface of the connecting shaft 66, a sliding groove 75 opened inside the door frame 1, a slider 76 slidably connected inside the sliding groove 75, a crossbar 77 installed inside the slider 76, and a push plate 78 installed at one end of the crossbar 77 with one side of the second tooth plate 73 meshing with the second gear 74.

[0038] Specifically: A baffle 64 is installed on the surface of the rotating shaft 63 and located inside the inner protective door 4. During use, the baffle 64 is manually rotated downwards to insert into the locking plate 65 and the limiting shell 15, thus physically blocking the inner protective door 4 from the inside. The locking plate 65 is installed on one side of the inner protective door 4 and cooperates with the baffle 64 to form a locking structure. The connecting shaft 66 is movably connected to the inside of the door frame 1, and a limiting plate 67 and a second gear 74 are installed on its surface to transmit the power of the transmission assembly 7 to the limiting plate 67, causing it to rotate into the limiting groove 68. The slot 68 is located on one side of the outer protective door 3 and is in the shape of a groove. It cooperates with the limiting plate 67 to form a plug-in lock. The first gear 71 is mounted on the surface of the rotating shaft 63 and rotates with the rotating shaft 63. It meshes with the first toothed plate 72 and can accurately transmit the rotational motion to the first toothed plate 72 to complete the power conversion. The first toothed plate 72 meshes with one side of the first gear 71 and can convert the rotation of the first gear 71 into its own linear movement. Two sets of second toothed plates 73 are mounted on the top and bottom of the first toothed plate 72 and mesh with the corresponding second gears 74 respectively. The movement of the first toothed plate 72 is reliably transmitted to the second gear 74, realizing the lateral transmission of power. The second gear 74 is mounted on the surface of the connecting shaft 66 and meshes with the second toothed plate 73. It can convert the linear motion of the second toothed plate 73 into its own rotation, thereby driving the connecting shaft 66 and the limiting plate 67 to rotate, completing the locking action of the external protective door 3. The push plate 78 is mounted on one end of the crossbar 77 and slides in contact with the inner wall of the limiting groove 68 and the limiting plate 67. When the limiting plate 67 rotates, it pushes the push plate 78, thereby driving the crossbar 77 to move, realizing the locking action of the limiting plate 77. The spring 8, which drives the lever 62, is sleeved on the surface of the crossbar 77. One end of the spring 8 is fixedly connected to the slider 76, and the other end abuts against the end face of the slide groove 75. When the slider 76 moves, the spring 8 is compressed to provide a restoring force. When the limit plate 67 releases the push plate 78, the spring 8 pushes the slider 76 and the crossbar 77 back to the initial position, so that the limit lever 62 automatically exits the slot 61, ensuring the smooth completion of the unlocking action. The observation window 9 is opened on one side of the outer protective door 3 to observe the external situation without opening the door, so that the people inside can judge the external environment and improve safety. Example 3

[0039] Please see Figures 1-10 Based on Embodiments 1 and 2, the other end of the crossbar 77 is fixedly connected to the limiting rod 62. A spring 8 is sleeved on the surface of the crossbar 77. One end of the spring 8 is fixedly connected to the slider 76. The push plate 78 is slidably connected to the inner wall of the limiting groove 68. One side of the limiting plate 67 is slidably connected to the push plate 78. Both the outer protective door 3 and the inner protective door 4 are made of bulletproof steel plate. The bulletproof steel plate is embedded with glass fiber and ceramic composite plate, which can improve the bulletproof effect. An observation window 9 is opened on one side of the outer protective door 3. A protective grille 10 is installed inside the observation window 9. An observation shell 11 is installed inside the inner protective door 4. Bulletproof glass 12 is installed inside the observation shell 11. A guide rail plate 13 is installed on one side of the observation shell 11. A sealing plate 14 is slidably connected inside the guide rail plate 13. A limiting shell 15 is installed on one side of the gantry 2. The bottom of the baffle 64 is inserted into the limiting shell 15.

[0040] Specifically: A protective grille 10, made of metal strips, is installed inside the observation window 9 to prevent external objects from entering the room through the window. An observation shell 11, installed inside the inner protective door 4, is used to fix and protect the bulletproof glass 12, providing a stable mounting support for the observation components. The bulletproof glass 12, installed inside the observation shell 11, consists of multiple layers of glass and a transparent adhesive layer, effectively resisting bullet impact while maintaining transparent observation functionality, ensuring safe observation for personnel inside. A guide rail 13 is installed on one side of the observation shell 11, with a sealing plate 14 slidably connected inside, providing sliding guidance for the sealing plate 14 to allow for smooth movement. The slide plate 14 is slidably connected inside the guide rail plate 13. During use, it can slide up and down inside the guide rail plate 13. Normally, it can be slid open to expose the bulletproof glass 12 for observation. In the event of an attack, the sealing plate 14 can be quickly slid closed to provide additional protection for the bulletproof glass 12, preventing fragments from flying after the glass is pierced. At the same time, it can also block the external view and improve the safety and concealment of the personnel inside. The limiting shell 15 is installed on one side of the gantry 2. The bottom of the baffle 64 is inserted into the limiting shell 15 to provide bottom support and limit the baffle 64, preventing the baffle 64 from accidentally falling out when subjected to vibration or impact. This ensures that the baffle 64 effectively blocks the inside and further enhances the anti-pry capability of the inner protective door 4.

[0041] The working principle of this invention is as follows: First, the door frame 1 and the door frame 2 are installed inside the room. Then, the outer protective door 3 is installed inside the door frame 1, and the door opens outward. The inner protective door 4 is installed inside the door frame 2, and the door opens inward. Both the outer protective door 3 and the inner protective door 4 are made of bulletproof steel plate. At the same time, the bulletproof steel plate is embedded with glass fiber and ceramic composite plate, which can improve the bulletproof effect. When the outer protective door 3 is damaged, the inner protective door 4 plays a secondary protection role, thereby improving the protection function.

[0042] After the outer protective door 3 is closed, the key is inserted into the lock body 51 and rotated. The rotation of the lock body 51 drives the rotating rod 52 to rotate. The rotating rod 52 pushes two sets of adjusting rods 53. The adjusting rods 53 push two sets of pins 54 to move in opposite directions. As the pins 54 move, they are inserted into the limiting holes 55 inside the door frame 1, thus achieving initial locking.

[0043] Then close the inner protective door 4, insert the key that matches the inner protective door 4 again, insert the lock body 51 and rotate it. After the lock body 51 rotates, it drives the rotating rod 52 to rotate. The rotating rod 52 pushes the two sets of adjusting rods 53. The adjusting rods 53 push the two sets of pins 54 to move in opposite directions. While the pins 54 are moving, they are inserted into the limiting hole 55 inside the door frame 2 to achieve initial locking.

[0044] After the inner protective door 4 is locked, manually rotate the baffle 64 downwards so that the baffle 64 is inserted into the snap-fit ​​plate 65 and the limiting shell 15, as shown. Figure 1 As shown, the baffle 64 blocks the inner side of the inner protective door 4, providing secondary protection. When the baffle 64 rotates, it drives the rotating shaft 63 to rotate. The rotating shaft 63, in conjunction with the first gear 71, drives the first toothed plate 72 to move. The first toothed plate 72, in conjunction with the second toothed plate 73, drives the second gear 74 to rotate. The second gear 74, in conjunction with the connecting shaft 66, drives the limiting plate 67 to insert into the limiting groove 68 on one side of the outer protective door 3, thus locking the outer protective door 3 a second time.

[0045] While the limiting plate 67 rotates, it can push the push plate 78 to move. The push plate 78, together with the crossbar 77, drives the slider 76 to move and compresses the spring 8. While the crossbar 77 moves, it drives the limiting rod 62 to move. When the limiting rod 62 moves, it inserts into the slot 61 to fix the position of the pin 54. When the lock body 51 of the outer protective door 3 is damaged from the outside, the pin 54 can be fixed by the limiting rod 62, so that the lock of the outer protective door 3 will not be released, further improving the anti-pry effect.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bulletproof and pry-resistant door for military barracks, comprising a door frame (1) and a door frame (2), characterized in that: The door frame (1) is movably connected to an outer protective door (3), and the door frame (2) is movably connected to an inner protective door (4). Both the outer protective door (3) and the inner protective door (4) are equipped with locking components (5). The locking components (5) include a lock body (51) installed inside the outer protective door (3) and the inner protective door (4), a rotating rod (52) installed on the surface of the lock body (51), an adjusting rod (53) movably connected to both ends of the rotating rod (52), and a pin (54) movably connected to the other end of the adjusting rod (53). The inner protective door (4) and the outer protective door (3) are locked by the locking components (5). A limiting component (6) is provided on one side of the gantry (2). The limiting component (6) includes a slot (61) opened on one side of the pin (54), a limiting rod (62) provided on one side of the slot (61), a rotating shaft (63) movably connected to the inside of the gantry (2), a baffle (64) installed on the surface of the rotating shaft (63), a snap plate (65) installed on one side of the inner protective door (4), and a connecting shaft (66) movably connected to the inside of the door frame (1). The limiting component (6) limits the outer protective door (3) and the inner protective door (4). The door frame (1) is provided with a transmission assembly (7), which includes a first gear (71) mounted on the surface of the rotating shaft (63) and a first toothed plate (72) meshing with one side of the first gear (71). The transmission assembly (7) provides driving force for the movement of the limiting rod (62).

2. The bulletproof and pry-resistant door for military barracks according to claim 1, characterized in that: The locking assembly (5) also includes a limiting hole (55) opened inside the door frame (1) and the door frame (2), and the pin (54) is adapted to the limiting hole (55).

3. A bulletproof and tamper-proof door for military barracks according to claim 1, characterized in that: The limiting component (6) also includes a limiting plate (67) installed on the surface of the connecting shaft (66) and a limiting groove (68) opened on one side of the outer protective door (3).

4. A bulletproof and pry-resistant door for military barracks according to claim 3, characterized in that: The transmission assembly (7) further includes two sets of second gear plates (73) installed on the top and bottom of the first gear plate (72), a second gear (74) installed on the surface of the connecting shaft (66), a groove (75) opened inside the door frame (1), a slider (76) slidably connected inside the groove (75), a crossbar (77) installed inside the slider (76), and a push plate (78) installed at one end of the crossbar (77). One side of the second gear plate (73) meshes with the second gear (74).

5. A bulletproof and pry-resistant door for military barracks according to claim 4, characterized in that: The other end of the crossbar (77) is fixedly connected to the limiting rod (62), and a spring (8) is sleeved on the surface of the crossbar (77). One end of the spring (8) is fixedly connected to the slider (76), and the push plate (78) is slidably connected to the inner wall of the limiting groove (68).

6. A bulletproof and pry-resistant door for military barracks according to claim 4, characterized in that: The limiting plate (67) is slidably connected to the push plate (78) on one side. The outer protective door (3) and the inner protective door (4) are both made of bulletproof steel plate. The bulletproof steel plate is embedded with glass fiber and ceramic composite plate, which can improve the bulletproof effect.

7. A bulletproof and pry-resistant door for military barracks according to claim 1, characterized in that: An observation window (9) is provided on one side of the outer protective door (3), and a protective grille (10) is installed inside the observation window (9).

8. A bulletproof and pry-resistant door for military barracks according to claim 1, characterized in that: The inner protective door (4) is equipped with an observation shell (11), and the observation shell (11) is equipped with bulletproof glass (12).

9. A bulletproof and pry-resistant door for military barracks according to claim 8, characterized in that: A guide rail plate (13) is installed on one side of the observation shell (11), and a sealing plate (14) is slidably connected inside the guide rail plate (13).

10. A bulletproof and pry-resistant door for military barracks according to claim 1, characterized in that: A limiting shell (15) is installed on one side of the gantry (2), and the bottom of the baffle (64) is inserted into the limiting shell (15).

Citation Information

Patent Citations

  • Bulletproof door

    CN212079087U

  • Bulletproof door

    CN213234790U

  • Electric control steel structure double-leaf protective air-tight door

    CN117449732A

  • Steel fireproof door with lock pin mechanism

    CN213775125U