T-shaped security door

Abstract

The utility model relates to the technical field of anti-theft doors, in particular to a T-shaped anti-theft door which comprises a door leaf, a ventilation opening is formed in the door leaf, a ventilation window is connected to the inner wall of the ventilation opening in a sliding mode, a plurality of V-shaped blades are connected to the inner wall of the ventilation window in a rotating mode, gears are fixedly connected to the tops of the V-shaped blades, and racks are meshed with the tooth roots of the gears. One electric telescopic rod is started to drive the electric telescopic rod to extend to abut against the rack to move horizontally, drive the gear to rotate, drive the V-shaped blades to rotate uniformly and reduce the ventilation area between the adjacent blades, and the other electric telescopic rod is started to drive the electric telescopic rod to extend to abut against the rack to move horizontally in the reverse direction, drive the gear to rotate in the reverse direction and drive the V-shaped blades to rotate in the reverse direction. The ventilation area between the adjacent blades can be increased, the ventilation quantity within a certain time is controlled by adjusting and controlling the ventilation area of the ventilation opening, meanwhile, the adjacent V-shaped blades can always shield the straight line sight line, and privacy is guaranteed while the requirement of a user for accurately adjusting the ventilation quantity is met.

Description

Technical Field

[0001] This utility model relates to the field of security door technology, specifically a T-shaped security door. Background Technology

[0002] A security door is a door equipped with a security lock that can resist unauthorized opening under certain conditions for a certain period of time and has a protective function. A T-type security door is a type of security door with a T-shaped cross-section.

[0003] A search revealed a Chinese utility model patent, CN220539532U, which discloses a T-shaped security door. The door includes a door frame and a door panel rotatably connected within the frame. A ventilation opening is provided on the door panel, and two grid plates are fixedly connected within the opening. Both grid plates are angled, and the mesh openings on the two grid plates are staggered, forming a gap between them. Several closed plates are rotatably connected within this gap. When two adjacent closed plates abut against each other, the ventilation opening is closed. When ventilation is achieved through the opening, the closed plates are opened, allowing air to exchange between the inside and outside through the ventilation opening and the grid plates within it. Because the mesh openings on the two grid plates are staggered, they effectively prevent the viewer from observing the interior through the mesh openings, thus blocking the view. Furthermore, the angled arrangement of the grid plates causes the mesh openings to also be tilted, further preventing the viewer from observing the interior through the mesh openings and improving the security performance of the security door.

[0004] However, the device lacks a precise function for adjusting the ventilation volume. In use, the ventilation opening is opened or closed by pulling a rope to control the rotation of the closing plate. Although manually pulling the rope can control the opening or closing of the ventilation opening, it is difficult to accurately adjust the ventilation volume, which affects the user experience. In addition, the rope is positioned high, making it inconvenient for elderly and children to use. Furthermore, the device lacks a detachable ventilation structure. The ventilation opening is prone to dirt due to long-term ventilation, and since it is fixed to the security door, it is difficult to clean and affects the ventilation quality. Utility Model Content

[0005] The purpose of this utility model is to provide a T-shaped security door to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A T-shaped security door includes a door leaf with a ventilation opening. A ventilation window is slidably connected to the inner wall of the ventilation opening. Several V-shaped blades are rotatably connected to the inner wall of the ventilation window. A gear is fixedly connected to the top of the V-shaped blades, and a rack meshes with the root of the gear teeth.

[0008] Preferably, a groove is provided on the door leaf near the end of the rack, and an electric telescopic rod is fixedly connected to the inner wall of the groove, with one of the two electric telescopic rods abutting against the rack.

[0009] Preferably, a protective railing is fixedly connected to the inner wall of the vent near the ventilation window, a Velcro fastener is fixedly connected to the inner wall of the vent away from the protective railing, and an insect repellent is fixedly connected to the side of the Velcro fastener away from the inner wall of the vent.

[0010] Preferably, a fixing strip is abutted against the outer surface of the ventilation window near the insect repellent, a two-way screw is inserted into the end of the fixing strip, a motor output shaft is fixedly connected to the bottom end of one of the two two-way screws, a transmission belt is sleeved on the bottom of both two two-way screws, and a receiving groove is opened on the door leaf near the end of the two-way screw.

[0011] Preferably, several of the V-shaped blades are arranged in the same direction on the inner wall of the ventilation window.

[0012] Preferably, the two fixing strips are arranged symmetrically about the ventilation window.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This T-shaped security door, with its ventilation window, V-shaped blades, and rack and pinion mechanism, allows for flexible operation. Activating one electric telescopic rod extends it to press against the rack and move it horizontally, causing the gears to rotate and the V-shaped blades to rotate uniformly, reducing the ventilable area between adjacent blades. Activating another electric telescopic rod extends it to press against the rack and move it horizontally in the opposite direction, causing the gears to rotate in the opposite direction and the V-shaped blades to rotate in the opposite direction, increasing the ventilable area between adjacent blades. By adjusting the ventilation area of ​​the vent, the ventilation volume can be controlled within a certain timeframe. Simultaneously, the adjacent V-shaped blades always block direct line of sight, satisfying the user's need for precise ventilation adjustment while ensuring privacy.

[0015] This T-shaped security door features a two-way screw rod and fixing strips. When in use, the insect repellent is removed, the motor is started to drive the two-way screw rod to rotate, causing the two fixing strips to retract into the receiving groove. The ventilation window is then removed for cleaning, and subsequently replaced. The motor is then started again to drive the two-way screw rod to rotate in the opposite direction, causing the two fixing strips to press firmly against the ventilation window, achieving a secure fixation while facilitating cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a schematic diagram showing the disassembled ventilation window and guardrail of this utility model;

[0018] Figure 3This is a cross-sectional view of the ventilation window of this utility model and a schematic diagram of the installation of the V-shaped blades;

[0019] Figure 4 This is a schematic diagram showing the disassembled ventilation window and V-shaped blades of this utility model;

[0020] Figure 5 This is a cross-sectional view of the door leaf of this utility model.

[0021] In the diagram: 1. Door leaf; 2. Ventilation opening; 3. Ventilation window; 4. V-shaped blade; 5. Gear; 6. Rack; 7. Groove; 8. Electric telescopic rod; 9. Guardrail; 10. Velcro; 11. Insect repellent; 12. Fixing strip; 13. Two-way lead screw; 14. Motor; 15. Transmission belt; 16. Receiving groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 As shown, this utility model provides a technical solution:

[0024] A T-shaped security door includes a door leaf 1 with a ventilation opening 2. A ventilation window 3 is slidably connected to the inner wall of the ventilation opening 2. Several V-shaped blades 4 are rotatably connected to the inner wall of the ventilation window 3. A gear 5 is fixedly connected to the top of the V-shaped blades 4, and a rack 6 meshes with the root of the gear 5. In use, driving the rack 6 to move horizontally causes the gear 5 to rotate, which in turn causes the V-shaped blades 4 to rotate uniformly, reducing the ventilable area between adjacent blades. Driving the rack 6 to move horizontally in the opposite direction causes the gear 5 to rotate in the opposite direction, which in turn causes the V-shaped blades 4 to rotate in the opposite direction, increasing the ventilable area between adjacent blades. By adjusting the ventilation area of ​​the ventilation opening 2, the ventilation volume can be controlled within a certain period of time. At the same time, the adjacent V-shaped blades 4 can always block the straight line of sight, meeting the user's need for precise adjustment of ventilation volume while ensuring privacy. The V-shaped blades 4 are arranged in sequence, so the line of sight is blocked no matter which direction the user looks into the room. In addition, the top of the rack 6 is provided with a slider embedded in the inner top wall of the ventilation window 3. When the rack 6 moves horizontally, the slider slides inside the groove in the inner top wall of the ventilation window 3, supporting the rack 6.

[0025] In this embodiment, preferably, a groove 7 is provided at the end of the door leaf 1 near the rack 6. An electric telescopic rod 8 is fixedly connected to the inner wall of the groove 7. One of the two electric telescopic rods 8 abuts against the rack 6. In use, one electric telescopic rod 8 is activated to extend and move against the rack 6, driving the gear 5 to rotate and causing the V-shaped blades 4 to rotate uniformly, reducing the ventilable area between adjacent blades. The other electric telescopic rod 8 is activated to extend and move against the rack 6 in the opposite direction, driving the gear 5 to rotate in the opposite direction, driving the V-shaped blades 4 to rotate in the opposite direction, which can increase the ventilable area between adjacent blades. By adjusting the ventilation area of ​​the ventilation opening 2, the ventilation volume can be controlled within a certain period of time. At the same time, the adjacent V-shaped blades 4 can always block the straight line of sight, meeting the user's need for precise adjustment of ventilation volume while ensuring privacy. The ventilation volume of the ventilation window 3 is adjusted by controlling the opening and closing of the electric telescopic rod 8, which does not require manual operation and is convenient for elderly or child users.

[0026] In this embodiment, preferably, a protective railing 9 is fixedly connected to the inner wall of the vent 2 near the ventilation window 3, and a Velcro 10 is fixedly connected to the inner wall of the vent 2 away from the protective railing 9. An insect repellent 11 is fixedly connected to the side of the Velcro 10 away from the inner wall of the vent 2. In use, the protective railing 9 is the first line of defense, ensuring safety while ventilating. The insect repellent 11 is attached to the inner wall of the ventilation window 3 on the side facing the room via the Velcro 10, making it convenient for users to remove or install according to their needs. The insect repellent 11 functions as an ultrasonic insect repellent, physically repelling mosquitoes and preventing them from entering the room through the ventilation window 3 while ventilating.

[0027] In this embodiment, preferably, a fixing strip 12 is abutted against the outer surface of the ventilation window 3 near the insect repellent 11. A two-way lead screw 13 is inserted into the end of the fixing strip 12. The bottom end of one of the two two-way lead screws 13 is fixedly connected to the output shaft of a motor 14. A transmission belt 15 is sleeved on the bottom of each of the two two-way lead screws 13. A receiving groove 16 is provided at the end of the door leaf 1 near the two-way lead screw 13. In use, the insect repellent 11 is removed, the motor 14 is started to drive the two-way lead screw 13 to rotate, which drives the two fixing strips 12 away and retracts into the receiving groove 16. The ventilation window 3 is removed, cleaned, and then put back. When the ventilation window 3 is activated, the motor 14 drives the bidirectional lead screw 13 to rotate in the opposite direction. The two fixing bars 12 press against the ventilation window 3, achieving the effect of firmly fixing the ventilation window 3 while facilitating cleaning. The rack 6 always moves inside the ventilation window 3, without exceeding the range of the ventilation window 3 or contacting the door leaf 1. The translation of the rack 6 is achieved by the electric telescopic rod 8 extending from inside the door leaf 1 into the ventilation window 3 and pushing the rack 6. Therefore, when the ventilation window 3 needs to be disassembled, it is only necessary to adjust the electric telescopic rod 8 to the shortened state and then retract the fixing bars 12 into the receiving groove 16, so that it can be removed without any obstacles.

[0028] In this embodiment, preferably, several V-shaped blades 4 are arranged in the same direction on the inner wall of the ventilation window 3. When in use, adjacent V-shaped blades 4 can always block the straight line of sight, satisfying the user's need for precise adjustment of ventilation volume while ensuring privacy. Specifically, if the V-shaped blades 4 are rotated to the point where adjacent blades are in close contact, the ventilation window 3 is closed. If the V-shaped blades 4 are rotated to the point where their openings are all facing the central axis of the door leaf 1, the ventilation volume is maximized.

[0029] In this embodiment, preferably, the two fixing strips 12 are symmetrically arranged about the ventilation window 3. When in use, the insect repellent 11 is removed, the motor 14 is started to drive the bidirectional lead screw 13 to rotate, causing the two fixing strips 12 to move away and retract into the receiving groove 16. The ventilation window 3 is then removed and cleaned. After that, the ventilation window 3 is put back in, the motor 14 is started to drive the bidirectional lead screw 13 to rotate in the opposite direction, and the two fixing strips 12 press against the ventilation window 3, achieving the effect of firmly fixing the ventilation window 3 while facilitating the cleaning of the ventilation window 3. The length of the two fixing strips 12 is greater than that of the ventilation window 3, and they are symmetrically arranged, one above the other pressing against the ventilation window 3, ensuring that the ventilation window 3 is firmly fixed and difficult to push open or damage from the outside, thus enhancing the security of the anti-theft door.

[0030] Working principle: In this embodiment of the T-shaped security door, when in use, one electric telescopic rod 8 is activated to extend and press against the rack 6 to move horizontally, driving the gear 5 to rotate, which in turn drives the V-shaped blades 4 to rotate uniformly, reducing the ventilable area between adjacent blades. The other electric telescopic rod 8 is activated to extend and press against the rack 6 in the opposite direction, driving the gear 5 to rotate in the opposite direction, which in turn drives the V-shaped blades 4 to rotate in the opposite direction, increasing the ventilable area between adjacent blades. By adjusting the ventilation area of ​​the ventilation opening 2, the ventilation volume can be controlled within a certain period of time. At the same time, the adjacent V-shaped blades 4 can always block the line of sight.

[0031] 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 preferred examples and are not intended to limit the 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 T-shaped security door, characterized in that: Includes a door leaf (1), on which a ventilation opening (2) is provided, and a ventilation window (3) is slidably connected to the inner wall of the ventilation opening (2). Several V-shaped blades (4) are rotatably connected to the inner wall of the ventilation window (3). A gear (5) is fixedly connected to the top of the V-shaped blade (4), and a rack (6) meshes at the root of the gear (5).

2. A T-shaped security door according to claim 1, characterized in that: The door leaf (1) has a groove (7) near the end of the rack (6), and an electric telescopic rod (8) is fixedly connected to the inner wall of the groove (7). One of the two electric telescopic rods (8) abuts against the rack (6).

3. A T-shaped security door according to claim 1, characterized in that: A protective railing (9) is fixedly connected to the inner wall of the vent (2) near the ventilation window (3), and a Velcro (10) is fixedly connected to the inner wall of the vent (2) away from the protective railing (9). An insect repellent (11) is fixedly connected to the side of the Velcro (10) away from the inner wall of the vent (2).

4. A T-shaped security door according to claim 3, characterized in that: The ventilation window (3) has a fixing strip (12) abutting against the outer surface of the insect repellent (11). A two-way screw (13) is inserted into the end of the fixing strip (12). The bottom end of one of the two two-way screws (13) is fixedly connected to the output shaft of a motor (14). A transmission belt (15) is sleeved on the bottom of both two two-way screws (13). A receiving groove (16) is opened on the door leaf (1) near the end of the two-way screw (13).

5. A T-shaped security door according to claim 1, characterized in that: Several of the V-shaped blades (4) are arranged in the same direction on the inner wall of the ventilation window (3).

6. A T-shaped security door according to claim 4, characterized in that: The two fixing strips (12) are symmetrically arranged about the ventilation window (3).

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