Magnetic roller shutter door assembly

Abstract

The invention provides a magnetic roller shutter door assembly, designed for application on a corresponding ground surface. The magnetic roller shutter door assembly comprises a door curtain, a first electromagnetic unit, and a first magnetic structure. The door curtain has a bottom portion, the first electromagnetic unit is disposed at the bottom portion of the door curtain, and the first magnetic structure is positioned on the ground surface corresponding to the bottom portion. The first electromagnetic unit is energized and configured to magnetically engage with the first magnetic structure. The invention not only enhances the airtightness of the magnetic roller shutter door assembly but also effectively extends its lifespan in fumigation environments, thereby achieving better economic benefits.

Description

[Technical Field]

[0001] This invention relates to a roller shutter assembly, and more particularly to a magnetic roller shutter assembly for cleanrooms used in the pharmaceutical industry. [Previous Technology]

[0002] The airtightness of magnetic roller shutters is crucial for maintaining the cleanliness of cleanrooms. Insufficient sealing allows external contaminants to seep in, weakening the stability of the indoor-outdoor pressure difference, reducing the efficiency of the air conditioning system, and thus increasing the risk of cross-contamination and energy consumption. Furthermore, the performance of magnetic roller shutters is also an important indicator of whether a factory meets standards such as ISO 14644, GMP, and FDA. Therefore, ensuring high airtightness effectively maintains the protective barrier function of the cleanroom, stabilizes cleanliness, and reduces operational risks and costs. In addition, magnetic roller shutters are commonly used in locations requiring fumigation treatment to improve the airtightness of the space and ensure the stability and efficiency of the fumigation effect.

[0003] Fumigation, as a key protective technology, aims to effectively kill pests and microorganisms using chemical gases or vapors, and is widely used in product storage and logistics across various industries. In the pharmaceutical field, fumigation plays a crucial role in the disinfection of medical packaging materials, environmental maintenance, and sterilization of medical devices. Furthermore, cell factories producing biological agents have a particularly urgent need for fumigation. Because these pharmaceutical products have extremely high requirements for a sterile environment, fumigation provides a highly efficient and gentle disinfection method that effectively prevents the growth and spread of harmful microorganisms to achieve a sterile production environment, avoids cross-contamination between different production lines and batches, and ensures the safety of pharmaceutical products throughout the entire production and distribution process, thereby protecting patients' health. However, fumigation is a high-risk operation, requiring not only professionally trained technicians but also ensuring a completely airtight working environment to effectively prevent the leakage of harmful gases, thus ensuring the safety of operators and thoroughly implementing the disinfection purpose to achieve the desired sterility.

[0004] Existing technology typically achieves complete airtightness during fumigation by manually applying adhesive strips to door seams. However, this method has significant drawbacks. First, it is inefficient and cumbersome, requiring considerable time and manpower to ensure the seal at each seam. Second, this method is highly dependent on the operator's skill and precision; improper operation may lead to insufficient airtightness, affecting the fumigation effect, or even causing gas leakage. Furthermore, this manual operation method lacks systematicity and traceability, making it difficult to ensure consistency and standardization for each fumigation operation. [Summary of the Invention]

[0005] In view of the above, the present invention provides a magnetic roller shutter door assembly applied to a cleanroom, the cleanroom having a floor and an interior space, the magnetic roller shutter door assembly comprising: a door curtain having a bottom; a first electromagnetic unit disposed at the bottom of the door curtain, the first electromagnetic unit being energized to generate magnetism, the first electromagnetic unit covering the bottom, the bottom having an L-shaped groove for accommodating the first electromagnetic unit, the L-shaped groove having a door stop portion connecting to one side surface of the door curtain and parallel to the first electromagnetic unit; and a first magnetic structure disposed on the floor relative to the bottom, the length of the first magnetic structure corresponding to the length of the first electromagnetic unit; wherein, when the first electromagnetic unit is energized, the first electromagnetic unit attracts the first magnetic structure to completely seal with the first magnetic structure, and when the first electromagnetic unit is energized to attract the first magnetic structure, the door stop portion is used to prevent the first electromagnetic unit from being exposed to the interior space of the cleanroom.

[0006] Wherein, when the bottom of the door curtain has not yet touched the ground but has reached a predetermined distance, the first electromagnetic unit is energized to attract the first magnetic structure.

[0007] Whereinafter, the predetermined distance is the distance of the electromagnetic field range generated after the first electromagnetic unit is energized.

[0008] The magnetic roller shutter door assembly further includes a first door track, a starting component, and a first power control module. The first door track is used for the door curtain to roll up and down. The starting component is disposed on the first door track and is used to trigger a first power-on signal when the bottom of the door curtain contacts the starting component. The first power control module is communicatively connected to the starting component and electrically connected to the first electromagnetic unit to receive the first power-on signal and power the first electromagnetic unit.

[0009] The magnetic roller shutter door assembly further includes a first door track and a pressure sensor. The first door track is used for the door curtain to roll up and down. The pressure sensor is set on the ground relative to the first door track and is used to generate a second electrical signal when the door curtain contacts the pressure sensor.

[0010] The magnetic roller shutter door assembly further includes a first power control module, which is communicatively connected to the pressure sensor and electrically connected to the first electromagnetic unit to receive the second power-on signal to power on the first electromagnetic unit.

[0011] The magnetic roller shutter door assembly is applied to a clean room, which has an internal space. The bottom of the door curtain has an L-shaped groove for accommodating the first electromagnetic unit. The L-shaped groove has a door stop. When the first electromagnetic unit is energized to attract the first magnetic structure, the door stop is used to prevent the first electromagnetic unit from being exposed to the internal space of the clean room.

[0012] The first electromagnetic unit has a slide rail, and the L-shaped groove has a slide corresponding to the slide rail, so as to slidably mount the first electromagnetic unit in the L-shaped groove.

[0013] The magnetic roller shutter door assembly further includes a threshold, a first door track and a second door track. The threshold includes a first snap-fit ​​structure and a threshold airtight strip. The threshold is detachably disposed between the first door track and the second door track. The threshold has an upper surface. The first snap-fit ​​structure is disposed on the upper surface of the threshold to secure the threshold between the first door track and the second door track. The threshold airtight strip is disposed on the upper surface of the threshold and covers the first snap-fit ​​structure.

[0014] The present invention also provides a magnetic roller shutter door assembly applied to a cleanroom, the cleanroom having a floor and an interior space. The magnetic roller shutter door assembly includes: a curtain having a bottom; a first magnetic structure disposed on the bottom of the curtain, the first magnetic structure covering the bottom, the bottom having an L-shaped groove for accommodating the first magnetic structure, the L-shaped groove having a door stop portion located on one side surface of the curtain and parallel to the first magnetic structure; and a first electromagnetic unit disposed on the floor relative to the bottom, the first electromagnetic unit being energized to generate magnetism, the length of the first electromagnetic unit corresponding to the length of the first magnetic structure; wherein, when the first electromagnetic unit is energized, the first electromagnetic unit attracts the first magnetic structure to completely seal with the first magnetic structure, and when the first electromagnetic unit is energized to attract the first magnetic structure, the door stop portion is used to prevent the first electromagnetic unit from being exposed to the interior space of the cleanroom.

[0015] In summary, the present invention provides a magnetic roller shutter door assembly with a first electromagnetic unit and a first magnetic structure fixedly arranged at the bottom of the door curtain and the ground, so as to improve the overall airtightness of the magnetic roller shutter door assembly, enhance the positioning accuracy of the door curtain, and effectively reduce the airflow interference generated during the curtain pull-down process.

[0016] Furthermore, for cell preparation factories, frequent fumigation is necessary to ensure the quality and safety of the product manufacturing process. However, the disinfectants used in the fumigation process (such as formaldehyde, ethylene oxide, peracetic acid, hydrogen peroxide, formalin, and ozone) are corrosive chemicals. Long-term use of these disinfectants may corrode the materials of the electromagnet, thereby indirectly affecting the performance of the electromagnet, leading to a decrease in magnetic field strength and an increased risk of short circuits. Moreover, the disinfectants used in fumigation are toxic gases, and the deterioration of the electromagnet's performance may also affect the airtightness of the magnetic roller shutter door assembly, further affecting the safety of fumigation operations and the stability of the daily cleanroom environment. Therefore, the magnetic roller shutter door assembly provided by the present invention is designed with an L-shaped groove, and this L-shaped groove has a door stop. When the first electromagnetic unit is energized to attract the first magnetic structure, the door stop can effectively prevent the first electromagnetic unit from being exposed to the interior space of the cleanroom, thereby reducing the corrosive effect of fumigation gas on the first electromagnetic unit.

[0017] Secondly, the first electromagnetic unit of the magnetic roller shutter door assembly provided by the present invention is equipped with a slide rail, and the L-shaped groove is provided with a slide path corresponding to the slide rail. This structural design can increase the convenience of replacing and disassembling the first electromagnetic unit. In addition, the door curtain can be flat and attached to the ground, and the surface of the magnetic roller shutter door assembly is kept smooth, which not only effectively avoids the accumulation of dust and dirt, but also facilitates cleaning and daily maintenance.

[0018] Furthermore, this invention provides a magnetic roller shutter door assembly with a threshold for anticipated power outage scenarios. When power is interrupted, the magnetic attraction device may malfunction, potentially reducing the door's airtightness. This invention addresses this issue with an optimized design, achieving overall sealing and stability through a removable threshold, while also reducing obstacles during equipment handling. The magnetic roller shutter door assembly provided by this invention not only significantly improves overall airtightness but also effectively reduces the corrosive effects of gases on the electromagnet during fumigation, and fully considers power outage scenarios, providing a corresponding solution. This invention not only improves the safety and stability of the production environment but also effectively extends the service life of the door assembly, thereby enhancing its long-term reliability and economic benefits. [Simplified Explanation of the Diagram]

[0043] Figure 1 is a schematic diagram illustrating the closed state of the magnetic roller shutter door assembly of the present invention.

[0044] Figure 2 is a schematic diagram showing the open state of the magnetic roller shutter door assembly of the present invention.

[0045] Figure 3 is a side view of the magnetic roller shutter door assembly of the present invention.

[0046] Figure 4 is a schematic diagram showing the starting component of the first door rail horizontally cut AA' line in Figure 2 in a resting state.

[0047] Figure 5 is a schematic diagram showing the starting component in operation along the horizontal section AA' of the first gate rail in Figure 2.

[0048] Figure 6 is a schematic diagram showing the starting component of the first gate rail horizontally cut AA' line in Figure 2 in a resting state.

[0049] Figure 7 is a schematic diagram showing the starting component in operation along the horizontal section AA' of the first gate rail in Figure 2.

[0050] Figure 8 is a schematic cross-sectional view of the BB' line connecting the magnetic roller shutter door assembly in Figure 3.

[0051] Figure 9 is a schematic diagram of the slide rail and slide path of the present invention.

[0052] Figure 10 is an enlarged schematic diagram of the slide rail shown in Figure 9.

[0053] Figure 11 is a schematic diagram of the threshold of the magnetic roller shutter door assembly of the present invention.

Implementation Method

[0019] To make the advantages, spirit, and features of the present invention easier and clearer to understand, detailed descriptions and discussions will follow with reference to specific embodiments and the accompanying drawings. It should be noted that these specific embodiments are merely representative examples of the present invention, and the specific methods, apparatus, conditions, materials, etc., exemplified are not intended to limit the present invention or the corresponding specific embodiments. Furthermore, the elements in the figures are only used to express their relative positions and are not drawn to scale; the step numbers in the present invention are only for distinguishing different steps and do not represent the order of the steps, as will be stated previously.

[0020] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram illustrating the closed state of the magnetic roller shutter door assembly 100 of the present invention. Figure 2 is a schematic diagram illustrating the open state of the magnetic roller shutter door assembly 100 of the present invention. The present invention provides a magnetic roller shutter door assembly 100, applied to a corresponding ground 2, which includes a curtain 1, a first electromagnetic unit 12, a first magnetic structure 13, a first door track 14, a second door track 15, a roller shutter storage box 16, and a main controller 17. In this specific embodiment, the curtain 1 has a bottom 18, and the first electromagnetic unit 12 is disposed at the bottom 18 of the curtain 1. The first electromagnetic unit 12 is used to generate magnetism by being energized, and the first electromagnetic unit 12 covers the bottom 18. The first magnetic structure 13 is disposed on the ground 2 relative to the bottom 18, and the length of the first magnetic structure 13 corresponds to the length of the first electromagnetic unit 12. When the first electromagnetic unit 12 is energized, the first electromagnetic unit 12 attracts the first magnetic structure 13 to completely seal with the first magnetic structure. The roller shutter storage box 16 and the main control unit 17 are embedded in the ceiling to reduce the possibility of dirt and grime accumulation. The first magnetic structure is made of iron and covered with PVC to meet the stringent requirements for cleanliness and disinfection resistance in cleanroom environments. However, in practice, the material of the first magnetic structure is not limited to this; it can include any material that can be attracted by magnetism.

[0021] As shown in Figure 2, when the bottom 18 of the curtain 1 has not yet touched the ground 2 but has reached a predetermined distance d, the first electromagnetic unit 12 is energized to attract the first magnetic structure 13. Wherein, the predetermined distance d is the distance of the electromagnetic field range generated after the first electromagnetic unit 12 is energized.

[0022] In other specific embodiments, the magnetic roller shutter door assembly provided by the present invention may further include a door curtain, a first magnetic structure, and a first electromagnetic unit. The door curtain has a bottom, the first magnetic structure is disposed at the bottom of the door curtain, the first magnetic structure covers the bottom, the bottom has an L-shaped groove for accommodating the first magnetic structure, the L-shaped groove has a door stop portion connecting to the side surface of the door curtain and is parallel to the first magnetic structure, and the first electromagnetic unit is disposed on the ground relative to the bottom. The first electromagnetic unit is used to generate magnetism by being energized, and the length of the first electromagnetic unit corresponds to the length of the first magnetic structure. The first electromagnetic unit is energized to attract the first magnetic structure.

[0023] In other specific embodiments, the door curtain of the present invention can be a multi-layered door curtain, in which each layer of the door curtain is detachably overlapped, and an antistatic coating is added to the surface of the door curtain to reduce the possibility of electrostatic adsorption of dust. A detachable heat insulation layer can be provided between the inner and outer layers of the door curtain of the present invention, providing options for flexibly responding to different temperature and humidity requirements. In addition, the multi-layered door curtain provided by the present invention has a cavity for filling with substances in at least one of the forms of solid, liquid and gas, improving the gas isolation effect and preventing the penetration of disinfecting gases. Furthermore, the present invention can also add an anti-corrosion coating to the metal and plastic parts of the magnetic roller shutter door assembly to extend its service life and reduce maintenance needs caused by chemical corrosion.

[0024] Please refer to Figure 3. Figure 3 is a side view of the magnetic roller shutter door assembly 100 of the present invention. As shown in Figures 2 and 3, the magnetic roller shutter door assembly 100 of the present invention includes a first door track 14, an activation component 32, and a first power control module 33. The first door track 14 is used for the curtain 1 to roll up and down. The activation component 32 is disposed on the first door track 14 and is used to generate a first power-on signal when the bottom 18 of the curtain 1 contacts the activation component 32. The first power control module 33 is communicatively connected to the activation component 32 and electrically connected to the first electromagnetic unit 12 to receive the first power-on signal to energize the first electromagnetic unit 12. The present invention may further include a pressure sensor 34. The first door track 14 is used for the curtain 1 to roll up and down, and the pressure sensor 34 is disposed on the ground relative to the first door track 14 to generate a second power-on signal when the curtain 1 contacts the pressure sensor 34. The first power control module 33 is communicatively connected to the pressure sensor 34 and electrically connected to the first electromagnetic unit 12 to receive a second power-on signal to energize the first electromagnetic unit 12. However, in practice, it is not limited to this; the main controller can also provide a third power-on signal, and the first power control module is electrically connected to the main controller and the first electromagnetic unit to receive the third power-on signal to energize the first electromagnetic unit. As shown in FIG3, the door curtain 1 of the present invention further includes a second electromagnetic unit 30 and a second magnetic structure 31. The second electromagnetic unit 30 is disposed on the side surface of the door curtain 1, and the second magnetic structure 31 is disposed on the first door track 14.

[0025] In other specific embodiments, a second geomagnetic unit can be provided on both sides of the door curtain, and the second magnetic structure can be provided in the first door track and the second door track. However, in practice, it is not limited to this. The second electromagnetic unit can also be provided on the first door track, and the second magnetic structure can also be provided on the side surface of the door curtain.

[0026] As shown in Figures 2 and 3, the magnetic roller shutter door assembly 100 of the present invention further includes a ground sensor 35 and a safety sensor (not shown). The ground sensor 35 is disposed in front of the roller shutter door assembly and embedded in the ground 2, used to sense the passage of automated guided vehicles (AGVs) and personnel and output a first signal to the main controller 17 to trigger subsequent operations. The safety sensor provides a safety signal to the main controller 17 to block the operation of the door curtain 1. The ground sensor 35 and the safety sensor include one of a gravity sensor, an infrared sensor, a PIR sensor, and an ultrasonic sensor. However, in practical applications, it is not limited to these, and the ground sensor 35 and the safety sensor can be selected according to the user's needs.

[0027] As shown in Figure 3, the magnetic roller shutter door assembly 100 of the present invention further includes a roller shutter storage box 16 and a main controller 17. The main controller 17 is communicatively or electrically connected to a ground sensor 35, a remote device (not shown), and a display panel 5, and receives a first signal and outputs a second signal to the door curtain 1 to control the opening of the door curtain 1. The first signal can be output by one of the ground sensor 35, the remote device, and the display panel 5. The second signal includes at least one of an upward pull signal and a downward pull signal. A time controller (not shown) is included between the upward pull signal and the downward pull signal. The time controller receives a time signal, and the time signal can be output by the remote device to precisely control the opening duration of the door curtain 1. The remote device can be at least one of a computer, tablet, or mobile phone. The display panel 5 is set on the first door track 14 to display various information, including product names, product specifications, product batch numbers, product status, operators, and shift information in the production area.

[0028] As shown in Figure 3, the display panel 5 of the present invention can be connected to a gas detection module (not shown), an alarm system (not shown), and a personnel identification module (not shown). The gas detection module can detect the concentration of various disinfection gases to monitor the concentration of fumigation gases in real time and ensure that the disinfection effect meets the standards. The alarm system can be automatically activated during fumigation to prevent personnel from accidentally entering the factory and to serve as an alarm. The personnel identification module can integrate a high-precision camera and multiple types of sensors. By using a high-resolution camera combined with multimodal recognition technology (such as fingerprint recognition, iris recognition, or voiceprint recognition), it can realize face recognition, identity verification, and behavior analysis functions, which not only meets the multi-level identity recognition needs but also significantly improves the security and accuracy of the system.

[0029] In other specific embodiments, the magnetic roller shutter door assembly of the present invention may include a manual chain mechanism to cope with special situations such as power outages or equipment failures. The curtain can be raised and lowered manually, ensuring that personnel can easily enter and exit or evacuate in an emergency. The manual chain is normally concealed within the ceiling and, through its built-in mechanism, automatically descends to the operating position when the system loses power. Furthermore, an anti-fall mechanism can be automatically triggered during manual operation to ensure that the curtain does not fall rapidly due to gravity, thereby effectively preventing potential dangers. In addition, the manual chain is independent of the main controller's electric system and has an automatic reset function to ensure a seamless switch back to normal operation mode after power is restored.

[0030] Please refer to Figures 2, 4, and 5. Figure 4 is a schematic diagram showing the actuation component 41 of the first door track 14 horizontally cut along line AA' in Figure 2 in a resting state. Figure 5 is a schematic diagram showing the actuation component 41 of the first door track 14 horizontally cut along line AA' in Figure 2 in an operating state. As shown in Figure 4, in this specific embodiment, the actuation component 41 is disposed within the first door track 14 and blocks the movement path of the curtain 1 when the actuation component 41 is in a resting state. As shown in Figure 5, when the curtain 1 touches the actuation component 41 disposed within the door track 14 during the pulling process, the actuation component 41 can be movably removed from the movement path of the curtain 1, thereby generating a first energizing signal and transmitting it to the first power control module. The first power control module then energizes the first electromagnetic unit and the second electromagnetic unit 30, which respectively attract the first magnetic structure and the second magnetic structure 31, thereby realizing the magnetic attraction and airtight function of the roller shutter door assembly.

[0031] In addition to the specific embodiments described above, the starting component of the horizontally cut AA' line of the door track may also include other states in the rest state and the operating state. Please refer to Figures 2, 6 and 7. Figure 6 is a schematic diagram showing the starting component 61 of the horizontally cut AA' line of the first door track 14 in Figure 2 in the rest state. Figure 7 is a schematic diagram showing the starting component 61 of the horizontally cut AA' line of the first door track 14 in Figure 2 in the operating state. As shown in Figures 6 and 7, in this specific embodiment, the starting component 61 is disposed in the first door track 14 and emits infrared rays 62, which are located in the moving path of the curtain 1. When the curtain 1 is pulled down, it blocks the reception of infrared rays 62 to trigger the generation of a second power signal and transmit the second power signal to the first power control module. The first power control module energizes the first electromagnetic unit and the second electromagnetic unit 30 to attract the first magnetic structure and the second magnetic structure 31 respectively, thereby realizing the magnetic attraction and airtight function of the roller shutter door assembly.

[0032] Please refer to Figures 3 and 8. Figure 8 is a schematic cross-sectional view of the BB' line connecting the magnetic roller shutter door assembly 100 in Figure 3. The magnetic roller shutter door assembly 100 in this specific embodiment can be applied to a clean room. The clean room has an internal space. The bottom 18 of the door curtain 1 has an L-shaped groove 81 to accommodate the first electromagnetic unit 12. The L-shaped groove 81 has a door stop 82 that connects to the side surface of the door curtain 1 and is parallel to the first electromagnetic unit 12. That is, the door stop 82 is located on the side extending into the internal space of the clean room in the direction X. When the first electromagnetic unit 12 is energized to attract the first magnetic structure 13 embedded in the ground 2, the door stop 82 is used to prevent the first electromagnetic unit 12 from being exposed to the internal space of the clean room, effectively resisting the damage of fumigation gases, further slowing down the weakening of the performance of the first electromagnetic unit 12, thereby extending the service life of the first electromagnetic unit.

[0033] Please refer to Figure 9. Figure 9 is a schematic diagram illustrating the slide rail 91 and slide track 92 of the present invention. As shown in Figure 9, the first electromagnetic unit 12 in this embodiment has a slide rail 91, and the L-shaped groove 81 located at the bottom 18 of the curtain 1 has a slide track 92 corresponding to the slide rail 91, for slidably mounting the first electromagnetic unit 12 in the L-shaped groove 81. Through this embodiment, the replaceability and maintenance efficiency of the first electromagnetic unit can be effectively improved, and the downtime required for maintenance or troubleshooting can be reduced. In addition, the corresponding design of the slide rail and slide track provides a precise alignment function, ensuring the stability of the first electromagnetic unit after assembly and avoiding a reduction in airtightness due to installation deviation.

[0034] In other specific embodiments, the magnetic roller shutter door assembly of the present invention may further include an adhesive layer for adhering the first electromagnetic unit to the bottom of the door curtain. However, in practical applications, it is not limited to this. The first electromagnetic unit can be fixed to the bottom of the door curtain in any form according to the user's needs.

[0035] Please refer to Figures 9 and 10. Figure 10 is an enlarged schematic diagram of the slide rail 91 shown in Figure 9. As shown in Figure 10, the first electromagnetic unit 12 in this specific embodiment has a slide rail 91. The distance F from the top end of the slide rail 91 can be greater than the distance E from the bottom end of the slide rail 91 to provide stable support, thereby securing the first electromagnetic unit in the corresponding slide position. However, in practical applications, the way the first electromagnetic unit is secured in the L-shaped groove is not limited to this. The slide rail and the slide channel can also be arranged in the opposite way in the L-shaped groove and the first electromagnetic unit.

[0036] Please refer to Figure 11. Figure 11 is a schematic diagram of the threshold 111 of the magnetic roller shutter door assembly 100 of the present invention. As shown in Figure 11, the magnetic roller shutter door assembly 100 in this specific embodiment may further include a threshold 111, a first door track 14 and a second door track (not shown). The threshold 111 includes a first snap-fit ​​structure 113 and a threshold airtight strip 112. The threshold 111 is detachably disposed between the first door track 14 and the second door track. The threshold 111 has an upper surface 114. The first snap-fit ​​structure 113 is disposed on the upper surface 114 of the threshold 111, and the first snap-fit ​​structure 113 is coplanar with the upper surface 114 of the threshold 111 to secure the threshold 111 between the first door track 14 and the second door track. The threshold airtight strip 112 is disposed on the upper surface 114 of the threshold 111 and covers the first snap-fit ​​structure 113. The first door track 14 is provided with a door track airtight strip 115, which has airtight strip holes 116 for accommodating the threshold airtight strip 112 to improve the airtightness between the airtight strips. In this embodiment, the diameter of the airtight strip hole 116 can be greater than or equal to that of the threshold airtight strip 112. The detachable threshold structure in this embodiment can cope with the situation of anticipated power failure, not only achieving the airtight performance of the door, but also providing convenience during equipment handling, meeting the environmental requirements of cleanrooms. In other embodiments, the first door track and the second door track can also be provided with multiple adjustable airtight strips respectively.

[0037] In summary, the present invention provides a magnetic roller shutter door assembly with a first electromagnetic unit and a first magnetic structure fixedly arranged at the bottom of the door curtain and the ground, so as to improve the overall airtightness of the magnetic roller shutter door assembly, enhance the positioning accuracy of the door curtain, and effectively reduce the airflow interference generated during the curtain pull-down process.

[0038] Furthermore, for cell preparation factories, frequent fumigation is necessary to ensure the quality and safety of the product manufacturing process. However, the disinfectants used in the fumigation process (such as formaldehyde, ethylene oxide, peracetic acid, hydrogen peroxide, formalin, and ozone) are corrosive chemicals. Long-term use of these disinfectants may corrode the materials of the electromagnet, thereby indirectly affecting the performance of the electromagnet, leading to a decrease in magnetic field strength and an increased risk of short circuits. Moreover, the disinfectants used in fumigation are toxic gases, and the deterioration of the electromagnet's performance may also affect the airtightness of the magnetic roller shutter door assembly, further affecting the safety of fumigation operations and the stability of the daily cleanroom environment. Therefore, the magnetic roller shutter door assembly provided by the present invention is designed with an L-shaped groove, and this L-shaped groove has a door stop. When the first electromagnetic unit is energized to attract the first magnetic structure, the door stop can effectively prevent the first electromagnetic unit from being exposed to the interior space of the cleanroom, thereby reducing the corrosive effect of fumigation gas on the first electromagnetic unit.

[0039] Secondly, the first electromagnetic unit of the magnetic roller shutter door assembly provided by the present invention is equipped with a slide rail, and the L-shaped groove is provided with a slide path corresponding to the slide rail. This structural design can increase the convenience of replacing and disassembling the first electromagnetic unit. In addition, the door curtain can be flat and attached to the ground, and the surface of the magnetic roller shutter door assembly is kept smooth, which not only effectively avoids the accumulation of dust and dirt, but also facilitates cleaning and daily maintenance.

[0040] Furthermore, this invention provides a magnetic roller shutter door assembly with a threshold for anticipated power outage scenarios. When power is interrupted, the magnetic attraction device may malfunction, potentially reducing the door's airtightness. This invention addresses this issue with an optimized design, achieving overall sealing and stability through a removable threshold, while also reducing obstacles during equipment handling. The magnetic roller shutter door assembly provided by this invention not only significantly improves overall airtightness but also effectively reduces the corrosive effects of gases on the electromagnet during fumigation, and fully considers power outage scenarios, providing a corresponding solution. This invention not only improves the safety and stability of the production environment but also effectively extends the service life of the door assembly, thereby enhancing its long-term reliability and economic benefits.

[0041] It should be noted that relational terms in this document, such as “first” and “second”, are used only to distinguish an entity or operation from another entity or operation, without requiring or implying any actual relationship or order between these entities or operations. Furthermore, the words “including,” “having,” and “containing,” as well as other similar forms, are intended to be equivalent in meaning and are open-ended; one or more items following any of these words do not imply an exhaustive list of such one or more items, or that the list is limited to one or more items.

[0042] The detailed description of the preferred embodiments above is intended to more clearly describe the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, the aim is to cover various changes and equivalent arrangements within the scope of the patent claims of the present invention. Therefore, the scope of the patent claims of the present invention should be interpreted in the broadest possible sense based on the foregoing description, so as to cover all possible changes and equivalent arrangements.

Claims

1. A magnetic roller shutter assembly for use in a cleanroom, the cleanroom having a floor and an interior space, the magnetic roller shutter assembly comprising: a curtain having a bottom; a first electromagnetic unit disposed on the bottom of the curtain, the first electromagnetic unit being energized to generate magnetism, the first electromagnetic unit covering the bottom, the bottom having an L-shaped groove for accommodating the first electromagnetic unit, the L-shaped groove having a door stop portion connecting to one side surface of the curtain and parallel to the first electromagnetic unit; and a first magnetic structure disposed on the floor relative to the bottom, the length of the first magnetic structure corresponding to the length of the first electromagnetic unit; wherein... When the first electromagnetic unit is energized, it attracts the first magnetic structure to completely seal with it. When the first electromagnetic unit is energized to attract the first magnetic structure, the door stop is used to prevent the first electromagnetic unit from being exposed to the interior space of the clean room.

2. The magnetic roller shutter door assembly as described in claim 1, wherein when the bottom of the door curtain has not yet touched the ground but has reached a predetermined distance, the first electromagnetic unit is energized to attract the first magnetic structure.

3. The magnetic roller shutter door assembly as described in claim 2, wherein the predetermined distance is the distance of the electromagnetic field range generated after the first electromagnetic unit is energized.

4. The magnetic roller shutter door assembly as described in claim 3 further includes a first door track, a starting component, and a first power control module. The first door track is used for the door curtain to roll up and down. The starting component is disposed on the first door track and is used to trigger a first power-on signal when the bottom of the door curtain contacts the starting component. The first power control module is communicatively connected to the starting component and electrically connected to the first electromagnetic unit to receive the first power-on signal and energize the first electromagnetic unit.

5. The magnetic roller shutter door assembly as described in claim 1 further includes a first door track and a pressure sensor. The first door track is used for the door curtain to roll up and down, and the pressure sensor is disposed on the ground relative to the first door track to generate a second electrical signal when the door curtain contacts the pressure sensor.

6. The magnetic roller shutter door assembly as described in claim 5 further includes a first power control module, which is communicatively connected to the pressure sensor and electrically connected to the first electromagnetic unit to receive the second power-on signal to power on the first electromagnetic unit.

7. The magnetic roller shutter door assembly as described in claim 1, wherein the first electromagnetic unit has a slide rail, and the L-shaped groove has a track corresponding to the slide rail for slidably mounting the first electromagnetic unit in the L-shaped groove.

8. The magnetic roller shutter door assembly as described in claim 1 further includes a threshold, a first door track, and a second door track. The threshold includes a first snap-fit ​​structure and a threshold airtight strip. The threshold is detachably disposed between the first door track and the second door track. The threshold has an upper surface. The first snap-fit ​​structure is disposed on the upper surface of the threshold for securing the threshold between the first door track and the second door track. The threshold airtight strip is disposed on the upper surface of the threshold and covers the first snap-fit ​​structure.

9. A magnetic roller shutter assembly for use in a cleanroom, the cleanroom having a floor and an interior space, the magnetic roller shutter assembly comprising: a curtain having a bottom; a first magnetic structure disposed on the bottom of the curtain, the first magnetic structure covering the bottom, the bottom having an L-shaped groove for accommodating the first magnetic structure, the L-shaped groove having a door stop portion connecting to one side surface of the curtain and parallel to the first magnetic structure; and a first electromagnetic unit disposed on the floor opposite the bottom, the first electromagnetic unit being energized to generate magnetism, the length of the first electromagnetic unit corresponding to the length of the first magnetic structure; wherein... When the first electromagnetic unit is energized, it attracts the first magnetic structure to completely seal with it. When the first electromagnetic unit is energized to attract the first magnetic structure, the door stop is used to prevent the first electromagnetic unit from being exposed to the interior space of the clean room.

Images