Light sound insulation bulletproof door
By installing inclined blocking plates and galvanized steel plates on the bottom plate of lightweight bulletproof doors, the bullet path is extended and its direction is changed, thus solving the problem of insufficient protection effect of lightweight bulletproof doors and improving bulletproof performance and safety without increasing the thickness of the steel plate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-27
AI Technical Summary
How to improve the protective effect of lightweight bulletproof doors while ensuring a certain thickness and weight of the door panel, especially without increasing the thickness of the steel plate, and enhance the bulletproof performance to meet the protection needs of civilian and commercial sites.
An inclined baffle is installed on the bottom plate of the bulletproof door to extend the bullet's penetration path and create a ricochet effect, thus changing the bullet's trajectory. At the same time, the baffle is tilted towards the hinge side so that the bullet deflects towards the wall. The use of galvanized steel plates and buffer plates further enhances the protective effect.
Without increasing the thickness and weight of the door panel, it significantly improves bulletproof performance, ensuring that bullets deflect towards the wall and protecting the safety of people inside, while enhancing convenience through sound insulation and aesthetic design.
Smart Images

Figure CN224049029U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bulletproof doors, and in particular to a light-weight soundproof bulletproof door. BACKGROUND
[0002] Light-weight soundproof bulletproof doors generally use lighter materials, such as high-strength steel or composite materials, to reduce weight, while ensuring a certain protective effect, and need to take into account aesthetics and convenience. They are mainly suitable for civilian and commercial places that do not have very high requirements for bulletproof performance, such as jewelry stores, banks, and other areas, especially for places such as bullet impact identification shooting laboratories and target ranges. Heavy bulletproof doors, on the other hand, use thicker and heavier materials, such as multi-layer composite armor, to provide higher levels of protection, with protection as the main consideration. They are usually used in military facilities, vaults, or other high-risk environments.
[0003] The protective effect of a light-weight soundproof bulletproof door mainly comes from the bulletproof panel installed inside. The commonly used bulletproof panel is a galvanized steel panel. Generally speaking, the thicker the galvanized steel panel, the better the protective effect. However, the thickness and weight of the panel will also increase accordingly, which will affect its aesthetics and convenience. Currently, some light-weight bulletproof doors replace the galvanized steel panel with a composite material panel that is lighter in weight and higher in strength, such as an ultra-high molecular weight polyethylene panel. However, this not only has a higher cost, but also loses some of the benefits of the galvanized steel panel, such as its good fire resistance and corrosion resistance. In addition, the processing technology of steel is relatively mature, while the processing technology of composite materials is relatively immature. Therefore, the mainstream light-weight bulletproof door still uses galvanized steel panels as the main protective material. How to improve the protective effect of a light-weight bulletproof door while keeping the thickness and weight of the panel constant is a problem that needs to be solved in this field. The inventors used a 7.62mm 51 type pistol to shoot a 4.5mm steel panel, which could not penetrate it. In this case, a 6mm standard design was used, which could reach the 4th level of the GA 165-2016 standard through shooting tests, meeting the actual needs of places such as shooting laboratories. CONTENT OF THE UTILITY MODEL
[0004] To solve or partially solve the problems in the related art, the present application provides a light-weight bulletproof door. By setting an inclined blocking plate on the bottom plate, the bullet penetration path can be extended, and a ricochet effect can also be produced, changing the bullet path, thereby improving the protective effect without increasing the thickness of the steel panel.
[0005] The application provides a light bulletproof door, which comprises a door frame, a door plate, a lock body, one side of the door plate is hingedly connected with the door frame through a door hinge, and the other side of the door plate is provided with the lock body corresponding to the door frame; the door plate comprises a frame, a keel frame and a bulletproof plate, the keel frame is fixedly installed in the frame, the frame is divided into a plurality of bulletproof areas through the keel frame, and the bulletproof plate is installed at each bulletproof area; the bulletproof plate comprises a bottom plate and a blocking plate, the bottom plate is fixedly installed at the bulletproof area, and a plurality of blocking plates are arranged on the bottom plate at an outdoor side at an equal interval and are inclined, one side of the blocking plate connected with the bottom plate is a connecting end, and the other side is a blocking end, and the projection of one blocking plate on the bottom plate covers the connecting end of the other blocking plate between adjacent blocking plates, so that the probability of the bullet directly hitting the bottom plate is reduced.
[0006] Optionally, in some embodiments, the included angle between the blocking plate and the bottom plate ranges from 45 to 60 degrees.
[0007] Optionally, in some embodiments, the inclined direction of the blocking plate is towards the door hinge side, so that the bullet hitting the blocking plate is easy to deviate towards the door hinge side.
[0008] Optionally, in some embodiments, the gap at the bulletproof area is filled with sound insulation material.
[0009] Optionally, in some embodiments, the frame is fixedly provided with a lock rack corresponding to the lock body, and the lock rack is fixedly provided with a guard plate covering the lock body at an outdoor side.
[0010] Optionally, in some embodiments, the frame is fixedly provided with a buffer plate at an indoor side.
[0011] Optionally, in some embodiments, the frame is wrapped by a wooden decorative plate at two sides.
[0012] Optionally, in some embodiments, the door frame is provided with a pry-resistant convex, and the pry-resistant convex is provided with a mute strip corresponding to the door plate.
[0013] The technical scheme provided by the application can have the following beneficial effects:
[0014] The bottom plate and the blocking plate of the application are both made of galvanized steel plate, the inclined blocking plate arranged on the bottom plate can prolong the penetration path of the bullet, and can also produce a ricochet effect to change the bullet path, so that the protection effect is improved without thickening the steel plate, and further, the inclined direction of the blocking plate is set to be towards the door hinge side, so that the bullet hitting the blocking plate is easy to deviate towards the door hinge side, and the door hinge side is usually close to the wall, so that even if the bottom plate is damaged, the bullet passing through the bottom plate under the action of the blocking plate is also easy to deviate towards the wall, thereby ensuring the safety of the indoor personnel.
[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout and in which:
[0017] Figure 1 is a schematic diagram of the overall structure of the present application;
[0018] Figure 2 is a side view of the overall structure of the present application;
[0019] Figure 3 is an exploded schematic diagram of the partial structure of the present application;
[0020] Figure 4 is a schematic diagram of the structure of the ballistic plate of the present application;
[0021] Figure 5 is a top view of the ballistic plate of the present application;
[0022] Figure 6 is a top view of the door frame of the present application.
[0023] Reference Signs:
[0024] 1 - door frame, 11 - pick-resistant protrusion, 12 - first mounting groove, 2 - door panel, 21 - frame, 211 - second mounting groove, 22 - keel, 23 - lock holder, 24 - ballistic plate, 241 - bottom plate, 242 - blocking plate, 243 - blocking end, 244 - connecting end, 25 - guard plate, 26 - buffer plate, 27 - wood trim, 3 - handle, 4 - lock body, 41 - lock catch plate, 5 - sound deadening strip. DETAILED DESCRIPTION
[0025] Embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown. This application may, however, be carried out in various ways and should not be construed to be limited to the embodiments set forth herein below by referring to the drawings. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numerals refer to like elements throughout.
[0026] It should be understood that, although the terms "first", "second", "third", etc. can be used in this application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.
[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0028] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] Referring to Figures 1-6 A light bulletproof door, comprising a door frame 1, a door panel 2, a lock body 4, a second mounting groove 211 is arranged on one side of the door panel 2, a first mounting groove 12 corresponding to the second mounting groove 211 is opened on the door frame 1, one end of the door hinge is fixedly connected in the first mounting groove 12, and the other end is fixedly connected in the second mounting groove 211, so that the door panel 2 is hingedly connected with the door frame 1, the lock body 4 is installed on the other side of the door panel 2, the lock catch plate 41 corresponding to the lock body 4 is arranged on the door frame 1, so as to facilitate the opening and closing of the door panel 2, and the handle 3 corresponding to the lock body 4 is also installed on both sides of the door panel 2.
[0030] Referring to Figure 3 The door panel 2 comprises a frame 21, a keel frame 22 and a bulletproof plate 24, the keel frame 22 is in a H-shaped structure, and the keel frame 22 is fixed in the frame 21 by welding, the frame 21 is divided into a plurality of bulletproof areas by the keel frame 22, and the bulletproof plate 24 is installed at each bulletproof area; the frame 21 and the keel frame 22 are made of bulletproof steel, so that they have bulletproof ability;
[0031] Further, the bulletproof plate 24 comprises a bottom plate 241 and a blocking plate 242, in this embodiment, the bottom plate 241 and the blocking plate 242 are both made of 1.5mm thick galvanized steel plate, which can resist close-range shooting of pistols and submachine guns, and the thickness of the galvanized steel plate can be increased or decreased according to the protection requirements; the bottom plate 241 is fixedly installed at the bulletproof area, for the convenience of maintenance and replacement, generally bolt and nut fixed connection is selected, when the bulletproof plate 24 needs to be replaced, single piece replacement can be carried out, without replacing all the bulletproof plates 24, thereby saving cost, and welding can also be selected according to requirements, thereby improving the protection effect;
[0032] Referring to Figures 4-5 On the side of the bottom plate 241 facing the outdoor, a plurality of blocking plates 242 are obliquely arranged at equal intervals, one side of the blocking plate 242 connected to the bottom plate is a connecting end 244, and the other side is a blocking end 243, the projection of one of the blocking plates 242 on the bottom plate 241 covers the connecting end 244 of the other blocking plate 242, when the bullet shoots directly from the outdoor to the door plate 2, the bullet can only collide with the obliquely arranged blocking plate 242, avoiding the bullet directly acting on the bottom plate 241, in this way, not only the penetration path of the bullet can be prolonged, but also the bullet path can be changed, the bullet kinetic energy can be reduced, and the bullet can be prevented from penetrating the bulletproof plate 24 directly, thereby improving the protection effect without thickening the steel plate. Further, the included angle between the blocking plate 242 and the bottom plate 241 ranges from 45 to 60 degrees, an included angle that is too small will shorten the penetration path of the bullet and reduce the generation of the bullet jump effect, thereby reducing the protection effect, and an included angle that is too large will increase the number of blocking plates 242, which not only increases the production cost, but also increases the weight of the door plate 2;
[0033] Further, in the indoor scene, when the door plate is installed, the door hinge is usually located near the wall, so that the door plate 2 can be close to the wall when it is opened, thereby reducing the occupation of indoor space; therefore, in this application, the oblique direction of the blocking plate 242 is towards the door hinge side, so that the bullet is easy to deviate towards the door hinge side when it hits the blocking plate 242, and the door hinge side is usually close to the wall, so that even if the bottom plate 241 is damaged, the bullet will be more likely to deviate towards the wall under the action of the blocking plate 242 even if it penetrates the bottom plate 241, thereby ensuring the safety of the indoor personnel; even if the small probability event of the bullet shooting trajectory being parallel to the blocking plate 242 occurs, the bullet directly hits the bottom plate 241, at this time, even if the bullet penetrates the bottom plate 241, it will also shoot into the wall in the indoor, thereby ensuring the safety of the indoor personnel.
[0034] Referring to Figure 3In order to improve the protection of the lock body 4, a lock frame 23 corresponding to the lock body 4 is fixedly installed on the frame 21, the lock frame 23 and the frame 21 form an area matching the size of the lock body 4, and a protective plate 25 covering the lock body 4 is fixedly installed on the side of the lock frame 23 facing the outdoor, the protective plate 25 is made of bulletproof steel, and a through hole is formed on the protective plate 25 for the lock cylinder to pass through.
[0035] In some embodiments, referring to Figure 3 In order to improve the bulletproof effect, a buffer plate 26 is fixedly installed on the side of the frame 21 facing the indoor, the buffer plate 26 can be made of ultra-high molecular weight polyethylene, and if a bullet penetrates the bulletproof plate 24, it will be blocked by the buffer plate 26, and the buffer plate 26 is mainly used to block the bullet fragments penetrating the bulletproof plate 24.
[0036] In some embodiments, in order to improve the sound insulation effect of the door plate 2, after the bulletproof plate 24 is installed, the gap in the bulletproof area is filled with sound insulation material, and referring to Figure 6 A pick-resistant protrusion 11 is arranged on the side of the door frame 1 facing the outdoor, the pick-resistant protrusion 11 is fixedly installed on the contact surface of the door plate 2 and abuts against the mute strip 5 when the door plate 2 is closed, thereby blocking the sound and ensuring the sound insulation effect.
[0037] Based on the above embodiments, referring to Figure 2 The two sides of the frame 21 are wrapped with wood veneers 27 to ensure the appearance of the door plate 2, so that the structure of the door plate 2 from the outdoor to the indoor is: wood veneer 27, frame 21, bulletproof plate 24, buffer plate 26, and wood veneer 27.
[0038] Specific working process:
[0039] When a bullet is fired from the outdoor to the door plate 2, the bullet first contacts the inclined blocking plate 242, and under the action of the blocking plate 242, the bullet is easy to jump, which not only greatly reduces the kinetic energy of the bullet, but also changes the trajectory of the bullet to prevent the bullet from directly penetrating the bulletproof plate 24, and the buffer plate 26 is further arranged on the rear side of the bulletproof plate 24 to further improve the protection effect; even if the bullet penetrates the door plate 2, under the action of the blocking plate 242, the bullet is easy to deviate to the door hinge side, so that the bullet is more likely to hit the wall after being shot into the indoor, thereby ensuring the safety of the indoor personnel.
[0040] Finally, it should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Ranges can be expressed herein with "from" and "to" statements of the form "from about a to about b", and include the end points of the ranges. Moreover, the terms including, including but not limited to or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0041] The foregoing description of various embodiments of the present application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It was described above, and then described in the description prior to the claims, that the term "comprising", including its variants, such as "comprise", "comprises" or "comprised of", is intended to cover a non-exclusive inclusion. Thus, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "consisting of" is intended to cover only those elements listed. The term "consisting essentially of" is intended to cover only those elements as modified by "essentially", in that additional elements will not change the basic and novel characteristics of the described embodiments. The foregoing description, for the purposes of explanation, has been presented consistent with the attachment of forms to embodiments that are possible. There can be many alternate arrangements and methodologies employed in carrying out various embodiments.
Claims
1. A lightweight soundproof ballistic door, characterized by: Including door frame (1), door panel (2), lock body (4), one side of the door panel (2) is hinged to the door frame (1) through the door hinge, and the other side of the door panel (2) is provided with the lock body (4) corresponding to the door frame (1); The door panel (2) comprises a frame (21), a keel frame (22) and a bulletproof plate (24), the keel frame (22) is fixedly installed in the frame (21), the frame (21) is divided into a plurality of bulletproof areas by the keel frame (22), and the bulletproof plate (24) is installed at each bulletproof area; The bulletproof plate (24) comprises a bottom plate (241) and a blocking plate (242), the bottom plate (241) is fixedly installed at the bulletproof area, and a plurality of blocking plates (242) are arranged on the bottom plate (241) at an outdoor side at equal intervals, one side of the blocking plate (242) connected with the bottom plate (241) is a connecting end (244), the other side is a blocking end (243), and the projection of one of the blocking plates (242) on the bottom plate (241) covers the connecting end (244) of the other blocking plate (242), so that the probability of the bullet directly hitting the bottom plate (241) is reduced.
2. The lightweight soundproof ballistic door of claim 1, wherein: The included angle between the blocking plate (242) and the bottom plate (241) ranges from 45 to 60 degrees.
3. The lightweight soundproof ballistic door of claim 2, wherein: The inclination direction of the blocking plate (242) is toward the door hinge side, so that the bullet hitting the blocking plate (242) is easy to deflect toward the door hinge side.
4. The lightweight soundproof ballistic door of claim 1, wherein: The gap at the bulletproof area is filled with sound insulation material.
5. The lightweight soundproof ballistic door of claim 1, wherein: The frame (21) is fixedly provided with a lock holder (23) corresponding to the lock body (4), and the lock holder (23) is fixedly provided with a cover plate (25) covering the lock body (4) at an outdoor side.
6. The lightweight soundproof ballistic door of claim 1, wherein: The frame (21) is fixedly provided with a buffer plate (26) at an indoor side.
7. The lightweight soundproof ballistic door of claim 5, wherein: Both sides of the frame (21) are wrapped by wood veneer (27).
8. The lightweight soundproof ballistic door of claim 1, wherein: The door frame (1) is provided with a pry-resistant convex (11), and the pry-resistant convex (11) is provided with a mute strip (5) corresponding to the door panel (2).