A one-way safety door

Abstract

This application relates to the technical field of security doors, and discloses a one-way security door, comprising: a door body, rotatably mounted on a building; a baffle, fixedly mounted on the building, wherein the door body is in contact with the baffle when closed; a first torsion spring for driving the door body to always have a tendency to rotate towards the baffle; a first sensor for detecting whether the door body and the baffle are in contact; and a first alarm, electrically connected to the sensor, wherein when the door body leaves the baffle for a predetermined time, the first sensor triggers the first alarm. This application enables the security door to remain in a normally closed state, improving the protective effect of the security door.

Description

Technical Field

[0001] This application relates to the technical field of security doors, and in particular to a one-way security door. Background Technology

[0002] In actual production, the factory building has a multi-story structure, and stairs are needed to go up and down. The stairs between production line platforms are generally quite steep, so handrails and safety doors are installed for safety.

[0003] The existing safety gate has a hinged door that rotates and is mounted on the handrail. The handrail has a baffle that allows the safety gate to be pushed open from one side only. When going up the stairs, the safety gate can be pushed open directly, but when going down the stairs, the safety gate needs to be pulled open manually to prevent the risk of falling.

[0004] In actual use, there are situations where people use objects to block or ropes to keep the door open for easy passage, or sometimes due to negligence, the door is blocked by objects and remains open, which still poses a danger. Utility Model Content

[0005] To further improve the protective effect of security doors, this application provides a one-way security door.

[0006] This application provides a one-way safety door, which adopts the following technical solution: A one-way safety door, comprising: The door is mounted on the building in a rotating manner; A baffle is fixedly installed on the building, and the door fits against the baffle when closed. A first torsion spring is used to drive the door to always have a tendency to rotate in the direction of the baffle; The first sensor is used to detect whether the door and the baffle are in contact. The first alarm is electrically connected to the first sensor. When the door leaves the baffle for more than a specified time, the first sensor triggers the first alarm.

[0007] By adopting the above technical solution, the door is flush with the baffle when closed. If a person is walking up the stairs, they can simply push the door open to pass. If a person is walking down the stairs, they need to pull the door away from the baffle before pushing it. The baffle limits the door's position, keeping it stationary. After the door is opened, the preload of the first torsion spring provides a continuous and reliable closing torque, ensuring that the door automatically and quickly closes to a safe position flush with the baffle without human intervention after a person has passed through. The first sensor (such as a proximity sensor or magnetic switch) and the first alarm constitute a monitoring system that can determine in real time whether the door is in a "closed" (flushed) safe state. Once the system detects that the door has left the baffle (i.e., been pushed open) for more than a preset time (e.g., 3-5 seconds), it determines that the door is in an abnormal open state and immediately triggers an alarm in the form of sound and light.

[0008] Optionally, a magnetic attraction sheet is provided between the door body and the baffle to attract each other.

[0009] By adopting the above technical solution, when the door is about to close and the angle between the door and the baffle is very small, the magnetic plates begin to interact and generate attraction. The magnetic force can make the door have a "closing" action at the moment of closing, which helps the first sensor (if it is a magnetic switch) to detect the "closing" state more stably and accurately.

[0010] Optionally, a baffle strip is installed on the side of the door body near the baffle. An angle is formed between one side wall of the baffle strip along its length and the side wall of the door body, and the angle is obtuse. When the door body is opened, the baffle strip blocks the passage. The baffle strip is mounted on the door body by rotating up and down.

[0011] By adopting the above technical solution, an obtuse angle is formed between the stop strip and the door. When a person stands on the stairs going up and approaches the door, the stop strip is away from the person. When the person pushes the door, the stop strip is behind the person and moves with the door. Generally, when the door is open, only one person can pass through at a time, which does not easily lead to crowding at the safety door, allowing people to leave the stairs in an orderly and safe manner. When a person moves down the stairs, after pulling the door, the stop strip blocks the passage. It is necessary to rotate the stop strip up or down to move it away from the passage. It is necessary to pull the door and rotate the stop strip to pass smoothly. If the door is intentionally opened, the stop strip is in the state of blocking the passage, further improving the protection effect after the door is accidentally opened.

[0012] Optionally, the stop bar is connected to a second torsion spring to keep the stop bar in its initial state.

[0013] By adopting the above technical solution, the second torsion spring ensures that the stop bar can maintain a stable initial state under normal conditions, which makes the movement of the stop bar more controllable and reliable.

[0014] Optionally, the door body is detachably mounted with an mounting block, and the stop bar is mounted on the mounting block.

[0015] By adopting the above technical solution, the entire baffle mechanism is modularized, making the installation, replacement, and maintenance of the baffle extremely convenient.

[0016] Optionally, the mounting block is inserted into the door body.

[0017] By adopting the above technical solution, the retaining strip can be removed simply by pulling out the mounting block.

[0018] Optionally, a second sensor is installed on the door body. The second sensor is electrically connected to a second alarm. The second sensor is used to sense the rotation state of the barrier bar. When the barrier bar rotates for a specified time, the second sensor triggers the second alarm.

[0019] By adopting the above technical solution, the second sensor can detect that "the barrier bar is in an abnormal position (horizontally raised) for more than a specified time," thereby triggering an alarm. This effectively prevents malicious damage to the one-way safety function. The second monitoring system and the first system (monitoring the door status) are independent of each other but complementary, forming a double insurance and greatly improving the reliability of the entire security door.

[0020] Optionally, the door body has a plate-like structure.

[0021] By adopting the above technical solution, the plate structure makes it impossible for the door to be tied with ropes.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. The first torsion spring provides a constant closing torque, ensuring that the door can automatically reset; while the cooperation of the first sensor and the first alarm gives the door the ability to "sense" and "alarm". It can not only determine in real time whether the door is in a safe closed state, but also distinguish between "normal passage" (short-term opening) and "abnormal constant opening" (excessive opening) and immediately issue an alarm. This changes the role of the safety door from passive physical isolation to active risk warning, which greatly improves the safety of the overall environment and effectively prevents the occurrence of fall accidents. 2. The stop bar and the second torsion spring work together to form a self-locking mechanism. It can also issue an alarm in time when the stop bar is abnormal, through the cooperation of the second sensor and the second alarm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the door in the closed state according to Embodiment 1 of this application; Figure 2It is a schematic diagram of the partial explosion structure of Embodiment 1 of the present application; Figure 3 It is a schematic diagram of the overall structure of Embodiment 2 of the present application; Figure 4 It is a schematic diagram showing the door body in the open state of Embodiment 2 of the present application.

[0024] Explanation of reference numerals: 10, door body; 11, rotating shaft; 12, protective sleeve; 20, baffle; 30, first torsion spring; 40, first sensor; 50, bar; 51, hinge shaft; 60, mounting block; 70, second torsion spring; 80, second sensor. Detailed implementation manners

[0025] The following will Figure 1 - with reference to the attached Figure 4 make a further detailed description of the present application.

[0026] Embodiment 1 of the present application discloses a one-way security door.

[0027] Embodiment 1: <{0000076}>Refer to Figure 1 , a one-way security door includes a plate-shaped door body 10 and a baffle 20. The door body 10 is rotatably installed on the building door frame or guardrail at the stairway entrance through a hinge or a rotating shaft 11. The rotating shaft 11 is fixedly installed on the handrail, and the door body 10 is rotatably installed on the rotating shaft 11. The baffle 20 is fixedly installed on the guardrail by bolts or welding. The position of the baffle 20 is precisely adjusted so that when the door body 10 rotates around the rotating shaft 11 to the closed position, the edge of the door body 10 can be completely fitted with the vertical plate surface of the baffle 20 to form an effective physical isolation.

[0028] Refer to Figure 2 , a first torsion spring 30 is installed on the rotating shaft 11. The first torsion spring 30 is sleeved on the rotating shaft 1​​To monitor the door's status in real time, a one-way safety door also includes a first sensor 40 and a first alarm. The first sensor 40 and the first alarm (such as an audible and visual buzzer) are electrically connected via wires or wirelessly, and are also electrically connected to a control switch. The first sensor 40 is mounted on the baffle 20. When the door 10 is in contact with the baffle 20, the first sensor 40 outputs a "closed" signal; when the door is pushed open, the sensor outputs a "open" signal. The first sensor 40 contains a timing module. Once the duration of the "open" signal exceeds a preset safety threshold (e.g., 5 seconds), it is determined that the door is in an abnormally open state. The first sensor 40 immediately triggers a second alarm via the control switch to sound an alarm until the door is closed again. In this application, the first sensor 40 and the first alarm are integrated together, which is prior art. The first alarm is not specifically shown.

[0030] To enhance the door's closing force and improve sensing performance, magnetic locating plates composed of permanent magnets and magnetic conductive sheets are embedded on the surfaces where the door body 10 and the baffle 20 meet. When the door closes to a certain angle, the magnetic locating plates generate a strong attraction, assisting the first torsion spring 30 in firmly holding the door to the baffle 20. This not only makes the closing action crisper but also reduces gaps caused by vibration. The first sensor 40 is a magnetic sensor; the combination of permanent magnets and magnetic conductive sheets provides a more stable and stronger trigger signal for the magnetic sensor.

[0031] The implementation principle of a one-way safety door in Embodiment 1 of this application is as follows: The door is automatically and reliably closed by the first torsion spring 30 and the magnetic closure sheet; the door's opening status is monitored by the first sensor 40 in conjunction with the first alarm.

[0032] Example 2: Reference Figure 3 The difference between Embodiment 2 and Embodiment 1 is that a long strip of baffle 50 is installed on the side of the door 10 facing the downward direction of the stairs (i.e., the side near the baffle 20) via a mounting block 60. The baffle 50 is rotatably connected to the mounting block 60 via a hinge shaft 51, and the hinge shaft 51 also rotates when the baffle 50 rotates up and down.

[0033] A second torsion spring 70 is sleeved on the hinge shaft 51. One end of the second torsion spring 70 is fixed on the hinge shaft 51, and the other end of the second torsion spring 70 is fixed on the mounting block 60. This allows the stop bar 50 to be pulled upwards and, after losing the force of human intervention, to rotate downwards to reset and return to its horizontal position.

[0034] The stop bar 50 is horizontal in its natural state, and the side wall of the stop bar 50 along its length forms an obtuse angle with the side wall of the door 10. When the door is closed, the end of the stop bar 50 away from the door 10 is close to the railing. When the door is pushed open from the direction of going upstairs, the stop bar 50 moves with the door 10 and is located behind a person, so it does not obstruct passage.

[0035] Reference Figure 4 However, if someone pulls the door 10 from the direction of going downstairs, the barrier 50 moves with the door 10 and partially or completely blocks the passage. The barrier 50 needs to be rotated upwards to allow people to pass through smoothly.

[0036] Reference Figure 3 The mounting block 60 is detachably installed on the door body 10 via a plug-in connection. Specifically, a slot is provided on the door body 10, and after the mounting block 60 is inserted from top to bottom, the stop strip 50 is installed on the door body 10. This modular design allows the entire stop strip 50 to be quickly disassembled or maintained as a single component, greatly improving convenience. Alternatively, a bolt can be threaded onto the door body 10, with one end of the bolt pressing against the mounting block 60, ensuring that the mounting block 60 is securely installed on the door body 10 and cannot be easily pulled out.

[0037] Finally, to prevent malicious attempts to jam the barrier 50 and disrupt its one-way function, a second sensor 80 and a second alarm are added. The second sensor 80 is electrically connected to the second alarm. The second sensor 80 is an angle sensor connected to the hinge shaft 51, monitoring the rotation angle of the barrier 50 by rotating the hinge shaft 51. The system is configured so that brief rotation of the barrier 50 during normal passage will not trigger the alarm. However, if the barrier 50 is continuously raised (i.e., held at an angle exceeding a certain angle with the horizontal plane) for more than a short set value (e.g., 3-5 seconds), the second sensor 80 will immediately trigger the second alarm, thus providing double protection against functional damage. The second sensor 80 and the second alarm are also integrated; the second alarm is not shown in detail.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-way safety door, characterized in that: include: The door (10) is rotatably installed on the building; A baffle (20) is fixedly installed on the building, and the door (10) is in contact with the baffle (20) when closed; A first torsion spring (30) is used to drive the door body (10) to always have a tendency to rotate in the direction of the baffle (20); The first sensor (40) is used to detect whether the door (10) and the baffle (20) are in contact; The first alarm is electrically connected to the first sensor (40). When the door (10) leaves the baffle (20) for more than a specified time, the first sensor (40) triggers the first alarm.

2. A one-way safety door according to claim 1, characterized in that: A magnetic attraction plate is provided between the door (10) and the baffle (20) to attract each other.

3. A one-way safety door according to claim 1, characterized in that: A baffle (50) is installed on the side of the door (10) near the baffle (20). An angle is formed between one side wall of the baffle (50) in the length direction and the side wall of the door (10), and the angle is obtuse. When the door (10) is opened, the baffle (50) blocks the passage. The baffle (50) is mounted on the door (10) by rotating up and down.

4. A one-way safety door according to claim 3, characterized in that: The stop bar (50) is connected to a second torsion spring (70), which drives the stop bar (50) to maintain its initial state.

5. A one-way safety door according to claim 3, characterized in that: The door body (10) is detachably mounted with an mounting block (60), and the stop bar (50) is mounted on the mounting block (60).

6. A one-way safety door according to claim 5, characterized in that: The mounting block (60) is inserted into the door body (10).

7. A one-way safety door according to claim 3 or 4, characterized in that: The second sensor (80) is installed on the door body (10). The second sensor (80) is electrically connected to the second alarm. The second sensor (80) is used to sense the rotation state of the stop bar (50). When the stop bar (50) rotates for a specified time, the second sensor (80) triggers the second alarm.

8. A one-way safety door according to claim 1, characterized in that: The door (10) has a plate-like structure.

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