Automatic opening and closing door for in-vitro diagnostic apparatus

Abstract

The utility model discloses a kind of automatic opening and closing door for in-vitro diagnostic equipment, it is related to in-vitro diagnostic technical field, including left vertical plate and right vertical plate, both top end are connected by connecting column, left vertical plate and right vertical plate opposite surface are equipped with first guide rail, first guide rail is slidably connected with moving assembly, moving assembly is fixed on synchronous belt assembly, moving assembly and lift door are fixedly connected;Left synchronous belt assembly top end and drive unit one end are connected, drive unit other end is connected with right synchronous belt assembly by transmission assembly, transmission assembly is equipped with cut-off brake and is penetrated in. The utility model does not fall after power off door, equipment door will not open at will, improve the stability and security of door opening and closing.

Description

Technical Field

[0001] This utility model relates to the field of in vitro diagnostics, specifically to a door opening device for a device casing. Background Technology

[0002] In the field of in vitro diagnostics, all equipment requires personnel to add consumables (tip heads, reaction cups, etc.), necessitating the design of a door for opening the equipment. Currently, most equipment doors are manual. While convenient and easily opened, indiscriminate opening during experiments can lead to dangerous situations and impact personnel safety. Furthermore, since most equipment is large, floor-standing, a manual door opening to the top might be too high and inconvenient for users.

[0003] Chinese Patent Publication No. CN206470636U, Publication Date: September 5, 2017, discloses a Chinese patent entitled "An In Vitro Diagnostic Reagent Preparation Device," which includes a housing, a door, and a control panel mounted on the housing. The door is made of a heat-insulating transparent material and includes a preparation chamber I door, a preparation chamber door, and a preparation chamber II door. The opening and closing of the doors requires manual operation of the door handles by the operator, resulting in low safety. Utility Model Content

[0004] This utility model discloses an automatic opening and closing door for in vitro diagnostic equipment. By setting up a drive unit and a power failure brake, the door will not fall after power failure, and the equipment door will not open arbitrarily, thereby improving the stability and safety of the door opening and closing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic opening and closing door for in vitro diagnostic equipment, comprising a left vertical plate and a right vertical plate, the top ends of which are connected by a connecting column. A first guide rail is provided on the opposite side of the left and right vertical plates. A moving component is slidably connected on the first guide rail. The moving component is fixed on a synchronous belt assembly and is fixedly connected to the lifting door. The top end of the synchronous belt assembly on the left side is connected to one end of a drive unit. The other end of the drive unit is connected to the synchronous belt assembly on the right side through a transmission assembly. A power-off brake is provided through the transmission assembly.

[0006] Preferably, the moving component includes a slider, one side of which is slidably connected to a first guide rail, and the other side is connected to a fixed block. The moving component is fixed to the bottom of the lifting door mounting surface. The slider is U-shaped, with its open end facing the first guide rail, and its other end fixedly connected to one side of the fixed block. The moving block is fixedly connected to the other side of the fixed block, and the top surface of the fixed block is fixedly connected to a synchronous belt. This improves sliding stability, reduces shaking and wear during sliding, extends the service life of the slider and guide rail, and ensures the smoothness of the lifting door during opening and closing.

[0007] Preferably, the timing belt of the fixing block and the timing belt assembly is fixedly connected, and the fixing block is T-shaped. Both the timing belt and the first guide rail are arranged along the length of the left and right pads. A frame is constructed to support the movement of the electric gate. The lower side of the frame is connected to two L-shaped side plates, one on the left and one on the right. Vertical plates are installed on each L-shaped side plate, with the left vertical plate on the left and the right vertical plate on the right. The T-shaped fixing block provides a more stable connection structure, better able to withstand the power transmitted by the timing belt, reduces the risk of loosening and detachment, and improves the reliability of the transmission.

[0008] Preferably, the fixed block and the movable block are fixedly connected on one side. The movable block is L-shaped and has several mounting holes on its outer surface. Bolts pass through the mounting holes to fix the lifting door to the movable block, ensuring a firm connection between the lifting door and the movable block and enhancing the stability of the entire door.

[0009] Preferably, a driven shaft is fixed to the bottom end of the opposite surfaces of the left and right vertical plates, and a driven wheel is mounted on the driven shaft. The driven wheel and the driving wheel have the same diameter. This ensures uniform tension of the synchronous belt during transmission, reduces transmission errors and belt wear, improves transmission efficiency and accuracy, and ensures that the electric door can operate smoothly and accurately during opening and closing.

[0010] Preferably, the driven wheel is connected to the driving wheel located at the top of the opposite surfaces of the left and right vertical plates via a synchronous belt, and the driving wheel on the left side is connected to the drive shaft on the left side of the drive unit. This connection method achieves efficient power transmission. By connecting the driving wheel and the driven wheel via a synchronous belt, it can be ensured that the electric door opens and closes smoothly and accurately under the drive of the drive unit. At the same time, the synchronous belt drive has high transmission efficiency and low noise, improving the operating performance and service life of the equipment.

[0011] Preferably, the drive unit is fixed to a fixed bracket, which is fixed to the lower surface of the connecting rod. A coupling is installed on the right end shaft of the drive unit. The drive shaft is connected to the power-off brake via a set screw. The fixed bracket provides stable support for the drive unit, ensuring that the drive unit will not shift or vibrate during operation, thus improving the stability and reliability of the transmission. The installation of the coupling effectively connects the drive unit and the drive shaft, achieving smooth power transmission. At the same time, the set screw connection ensures a firm connection between the drive shaft and the power-off brake, enhancing the safety of the entire transmission system.

[0012] Preferably, the coupling is connected to one end of the drive shaft, and the other end of the drive shaft is connected to the drive wheel on the right side. The power-off brake is fixed to the support, which is fixed to the lower surface of the connecting rod. The connecting rod is preferably made of aluminum profile. The principle of the power-off brake is that an electromagnet and an iron block are connected. When there is no power, the electromagnet's strong magnetism attracts the iron block tightly, and the drive shaft connected to the electromagnet will also lock and not rotate, thus holding the electric door in place and preventing it from falling when the power is off. When power is applied, the electromagnet's magnetism disappears, the attraction between it and the iron block disappears, and the drive shaft can rotate together with the motor shaft. This effectively avoids safety hazards caused by power outages and improves the safety and reliability of the equipment.

[0013] Preferably, the lifting door has a second guide rail near both sides of the mounting surface, and guide rail fixing blocks are slidably mounted on the second guide rail. The guide rail fixing blocks are L-shaped. The lifting door has a hollow center with transparent acrylic installed, allowing researchers to easily observe the experimental conditions inside the equipment. The design of the second guide rail and guide rail fixing blocks provides additional guidance and support for the lifting door, further improving the stability and accuracy of the door during opening and closing, and reducing shaking and jamming.

[0014] Preferably, the guide rail fixing block is fixedly installed on the connecting column, and a zero-position plate is provided at the end of the second guide rail. A sensor switch is provided on the side of the guide rail fixing block facing the zero-position plate. The sensor switch, in conjunction with the zero-position plate, ensures the consistency of the starting position of the lifting door. This improves the automation level and operating accuracy of the equipment, while also facilitating equipment maintenance and debugging.

[0015] Beneficial effects: The drive unit of this utility model works in conjunction with the power-off brake. In the event of an accidental power failure, the power-off brake immediately locks, and the lifting door stops and does not slide down, completely eliminating the risk of "hands falling" or "samples falling". It improves the safety of maintenance and sample addition operations, and significantly enhances the stability of the whole machine operation and user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model without the lifting door.

[0017] Figure 2 This is a schematic diagram of the structure of the lifting door of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of this utility model.

[0019] Reference numerals in the attached diagram: 1: Lifting door; 2: Guide rail fixing block; 3: Second guide rail; 4: Transparent acrylic; 5: Zero position plate; 6: Induction switch; 7: Left vertical plate; 8: Right vertical plate; 9: L-shaped side plate; 10: Moving block; 11: Fixing block; 12: Sliding block; 13: First guide rail; 14: Synchronous belt; 15: Driven wheel; 16: Driving wheel; 17: Connecting rod; 18: Power-off brake; 19: Drive shaft; 20: Support; 21: Drive unit; 22: Coupling; 23: Fixed bracket. Detailed Implementation

[0020] The automatic opening and closing door for in vitro diagnostic equipment disclosed in this utility model is powered by a drive unit 21 and driven by a synchronous belt 14 assembly. It is also equipped with a power-off brake 18 to ensure that the door does not fall when power is off, which significantly improves the stability and safety of the door opening and closing and provides a reliable guarantee for the automated operation of in vitro diagnostic equipment.

[0021] exist Figure 1 and Figure 3 In the illustrated embodiment, the automatic opening and closing door uses a left vertical plate 7 and a right vertical plate 8 as its two supporting structures. The tops of the two plates are fixedly connected by connecting columns to form the overall frame of the door, ensuring structural stability. Two L-shaped side plates 9 are located on the lower side of the frame, on the left and right sides respectively. Vertical plates are installed on the L-shaped side plates 9; the left side is the left vertical plate 7, and the right side is the right vertical plate 8. This layout makes the entire frame both lightweight and able to bear the weight of the door. A first guide rail 13 is provided on the opposite surfaces of the left vertical plate 7 and the right vertical plate 8. The first guide rail 13 is set along the length of the vertical plate, providing a sliding track for the moving component. The moving component is slidably connected to the first guide rail 13 and fixedly connected to the synchronous belt 14 of the synchronous belt 14 assembly. When the synchronous belt 14 moves, it drives the moving component to slide up and down along the first guide rail 13, thereby driving the fixed lifting door 1 to open and close.

[0022] exist Figure 1 and Figure 3 In the illustrated embodiment, the drive unit 21, serving as a power source, is installed at the top of the left synchronous belt 14 assembly. One end of the drive unit 21 is connected to the left synchronous belt 14 assembly, and the other end is connected to the right synchronous belt 14 assembly via a transmission assembly, thereby enabling the linkage of the left and right synchronous belts 14. A power-off brake 18 is installed through the transmission assembly. This brake is in a released state when the equipment is powered on, and does not affect the operation of the transmission assembly. When the equipment suddenly loses power, the power-off brake 18 immediately activates and engages the transmission assembly, preventing it from rotating. This, in turn, locks the position of the moving assembly via the synchronous belt 14 assembly, preventing the lifting door 1 from falling due to gravity. This fundamentally avoids potential equipment damage or personal injury caused by the door falling during a power outage, making it a core component for ensuring safety.

[0023] exist Figure 1 and Figure 3In the preferred embodiment shown, the structural design of the moving component ensures the stability of the sliding of the lifting door 1. The moving component includes a slider 12, which is U-shaped with its open end facing the first guide rail 13. This shape allows the slider 12 to wrap around the first guide rail 13 from both the top and bottom, forming a stable sliding fit and reducing lateral swaying during sliding. The other end face of the slider 12 is fixedly connected to one side of a fixed block 11. The fixed block 11 is T-shaped, with its lateral portion fixedly connected to the synchronous belt 14 and its longitudinal portion connected to the slider 12 and the moving block 10. This increases the contact area with the synchronous belt 14 and provides a stable mounting base for the moving block 10, better bearing the power transmitted by the synchronous belt 14 and reducing the risk of loosening or falling off. The other side of the fixed block 11 is fixedly connected to the moving block 10, which is L-shaped with several mounting holes on its outer side. Bolts pass through these mounting holes to fix the lifting door 1 to the moving block 10, forming a rigid connection between the lifting door 1 and the moving component. This ensures that the door does not undergo relative displacement during sliding, further enhancing overall stability.

[0024] exist Figure 1 and Figure 3 In the preferred embodiment shown, the transmission design of the synchronous belt 14 assembly ensures smooth and precise opening and closing of the door. A driven shaft is fixed to the bottom of the opposite surfaces of the left vertical plate 7 and the right vertical plate 8, and a driven wheel 15 is mounted on the driven shaft. A driving wheel 16 is provided at the top. The driving wheel 16 on the left side is connected to the drive shaft on the left side of the drive unit 21. The driven wheel 15 is connected to the driving wheel 16 via the synchronous belt 14, forming a closed transmission circuit. The driven wheel 15 and the driving wheel 16 have the same diameter. This design ensures that the synchronous belt 14 has uniform tension during transmission, avoiding uneven tension due to differences in wheel diameter, thus reducing transmission errors and wear on the synchronous belt 14. When the drive unit 21 is started, the left drive shaft drives the left drive wheel 16 to rotate, which in turn drives the left driven wheel 15 to rotate via the synchronous belt 14. Simultaneously, the drive unit 21 drives the right drive wheel 16 to rotate synchronously via the transmission assembly, causing the synchronous belts 14 on both sides to move at the same speed. This, in turn, drives the moving components on both sides to rise and fall synchronously, ensuring that the lifting door 1 remains horizontal during opening and closing, preventing tilting and improving operational stability and accuracy. The synchronous belt 14 transmission is not only highly efficient but also has low noise, meeting the quiet operating environment requirements of in vitro diagnostic equipment. Furthermore, the fixed connection between the synchronous belt 14 and the fixed block 11, compared to chain or gear drives, reduces lubrication requirements and maintenance costs, extending the equipment's service life. The sliding fit between the first guide rail 13 and the slider 12 reduces frictional resistance, allowing the drive unit 21 to move the door without requiring excessive power, thus saving energy.

[0025] In actual operation, the automatic door opening and closing process is efficient and safe. When the device needs to open the door, the control system activates the drive unit 21. The drive unit 21 drives the left drive wheel 16 to rotate via the left drive shaft, and simultaneously drives the right drive wheel 16 to rotate synchronously via the transmission assembly. The synchronous belt 14 circulates under the drive of the drive wheel 16 and the driven wheel 15, causing the T-shaped fixed block 11 fixed thereto to move up and down. The fixed block 11 slides along the first guide rail 13 via the slider 12, thereby driving the L-shaped moving block 10 and the lifting door 1 to rise, realizing the door opening action. In this process, the tight cooperation between the U-shaped slider 12 and the first guide rail 13 reduces swaying, the rigid connection between the T-shaped fixed block 11 and the L-shaped moving block 10 ensures lossless power transmission, and the synchronous transmission design on both sides makes the door rise smoothly.

[0026] When the door needs to be closed, the drive unit 21 reverses its rotation, and the synchronous belt 14 drives the moving component downwards, causing the lifting door 1 to descend and close. If a power outage occurs during operation, the power failure brake 18 immediately activates, locking the transmission component and preventing the drive wheel 16 and synchronous belt 14 from rotating. The moving component is locked in its current position, preventing the lifting door 1 from falling due to gravity. This ensures that the reagents, samples, and precision components inside the equipment are not damaged, while also avoiding potential dangers to the operators.

[0027] This invention utilizes a frame constructed from a left vertical plate 7 and a right vertical plate 8, with a drive unit 21 and a synchronous belt 14 assembly achieving precise transmission. A moving component ensures stable sliding of the door, and a power-off brake 18 guarantees safety in the event of a power outage, forming a highly efficient, stable, and safe automatic door opening and closing system. This system not only enables the automated opening and closing of the lifting door 1 but also maintains stable operation under various working conditions, effectively improving the automation level and safety of in vitro diagnostic equipment and providing crucial assurance for its reliable operation.

[0028] exist Figure 1In the preferred embodiment shown, the drive unit 21 is fixed to the fixed bracket 23, which is firmly fixed to the lower surface of the connecting rod 17, forming a stable power support structure. This fixing method ensures that the drive unit 21 will not shift or vibrate during high-speed operation or long-term use, avoiding transmission errors caused by power source shaking, and ensuring the coordinated operation of the synchronous belt 14 assemblies on both sides. A coupling 22 is installed on the right end shaft of the drive unit 21. As a key component connecting the drive unit 21 and the transmission shaft 19, the coupling 22 can effectively buffer minor impacts during power transmission, making torque transmission smoother and reducing component wear caused by rigid connection. The transmission shaft 19 is connected to the power-off brake 18 through a set screw. After the set screw is tightened, it is firmly embedded in the connection gap between the transmission shaft 19 and the brake, ensuring that there is no relative rotation between the two. This connection method not only ensures the reliability of transmission, but also facilitates disassembly and installation during later maintenance, laying the foundation for the stable operation of the entire transmission system.

[0029] The working principle of the power-off brake 18 is the core of ensuring safety. The power-off brake 18 is fixed to the support 20, which is fixed to the lower surface of the connecting rod 17. The connecting rod 17 is preferably made of aluminum profile, which is both lightweight and has sufficient structural strength. The power-off brake 18 contains an electromagnet and an iron block. When the equipment is powered on, the electromagnet generates magnetism, but the magnetism is designed to be in a "released" state at this time. A gap is maintained between the electromagnet and the iron block, which does not affect the rotation of the drive shaft 19, ensuring that the drive unit 21 can drive the right-side synchronous belt 14 assembly to operate normally through the drive shaft 19. When the equipment suddenly loses power, the electromagnet immediately loses power and its magnetism disappears. At this time, the internal spring pushes the iron block to tightly engage with the electromagnet (or grip the drive shaft 19), forming a mechanical lock. The drive shaft 19 is firmly fixed and cannot rotate. Because the drive shaft 19 is linked to the synchronous belt 14 assemblies on both sides, after the drive shaft 19 is locked, the synchronous belt 14 cannot move, and the positions of the moving components and the lifting door 1 are locked, preventing them from falling due to gravity. This design fundamentally eliminates the risk of "smashing hands" and "sampling" during power outages, protecting the safety of reagents, samples, and operators inside the equipment.

[0030] exist Figure 2In the preferred embodiment shown, the dual-rail guiding design of the lifting door 1 further enhances operational stability. The lifting door 1 has second guide rails 3 near both sides of the mounting surface. These second guide rails 3 are positioned along the height of the door body, forming a parallel dual-guide system with the first guide rails 13 on the left vertical plate 7 and right vertical plate 8. Guide rail fixing blocks 2 are slidably mounted on the second guide rails 3. The guide rail fixing blocks 2 are L-shaped, with one end slidably connected to the second guide rail 3 and the other end fixedly mounted on the connecting column. When the lifting door 1 moves up and down, the first guide rail 13 guides the moving components, while the second guide rail 3 provides auxiliary guidance to both sides of the door body through the guide rail fixing blocks 2. This dual guidance effectively limits the left-right swaying and forward-backward tilting of the door body, ensuring that the door body remains vertically raised and lowered during opening and closing, reducing friction with the equipment frame and lowering the risk of jamming. The lifting door 1 features a hollow design in the middle, with an embedded transparent acrylic plate 4. This design reduces the weight of the door body and allows experimental personnel to easily observe the experimental situation inside the equipment at any time, monitoring the reaction progress without opening the door, thus reducing environmental interference caused by frequent door opening.

[0031] exist Figure 2 In the preferred embodiment shown, the zero-position sensing system ensures the consistency of the starting position of the lifting door 1. A zero-position plate 5 is provided at the end of the second guide rail 3, and a sensor switch 6 is provided on the side of the guide rail fixing block 2 facing the zero-position plate 5. When the lifting door 1 moves to the fully closed or fully open position, the zero-position plate 5 triggers the sensor switch 6 to send a signal. This signal is transmitted to the equipment control system and recorded as the reference position of the door. Each time the door is started, the control system calibrates the running trajectory based on this reference position. This design improves the automation level and operating accuracy of the equipment, ensuring consistent opening and closing positions each time, avoiding poor sealing or operational errors caused by door position deviations, and also providing a clear reference point for equipment maintenance and debugging, reducing operational difficulty.

[0032] In actual operation, the synergistic effect of each system demonstrates high efficiency, safety, and precision. When the device issues an opening command, the drive unit 21 starts, driving the transmission shaft 19 to rotate via the coupling 22. The power-off brake 18 is released, and the transmission shaft 19 drives the right drive wheel 16 to rotate. Simultaneously, the left drive wheel 16 rotates synchronously under the direct drive of the drive unit 21. The left and right synchronous belts 14 drive the moving components to rise along the first guide rail 13, and the lifting door 1 opens accordingly. During this process, the second guide rail 3 and the guide rail fixing block 2 provide auxiliary guidance for the door, and the door rises smoothly until the zero-position plate 5 triggers the induction switch 6, and the door stops in the fully open position. When closing, the drive unit 21 rotates in the opposite direction, and the door descends along the double guide rails. If a power failure occurs during operation, the power-off brake 18 immediately locks the transmission shaft 19, and the door is suspended in its current position to prevent it from falling. The transparent acrylic panel 4 provides a real-time internal view for convenient monitoring.

[0033] The design of this automatic door fully considers the special needs of in vitro diagnostic equipment: the safety protection of the power-off brake 18, the smooth operation of the dual guide rails, the precise positioning of the zero-position sensor, and the convenience of the transparent observation window, together forming a solution that balances safety, efficiency, and practicality. Compared with traditional manual doors or single-rail automatic doors, this invention significantly improves safety, stability, and automation, effectively reducing operational risks and experimental errors, and providing strong support for the smooth conduct of in vitro diagnostic experiments.

[0034] This invention constructs a high-performance automatic door opening and closing system through the stable support of the drive unit 21, the safety locking of the power-off brake 18, the smooth guidance of the double guide rails, the precise positioning of the zero-position sensor, and the convenient design of the transparent observation window. This system completely eliminates safety hazards during power outages, improves the stability and accuracy of door operation, facilitates experimental observation and operation, significantly enhances the overall performance and user experience of in vitro diagnostic equipment, and provides reliable support for efficient and safe experiments in the field of in vitro diagnostics.

Claims

1. An automatic opening and closing door for an in vitro diagnostic device, comprising a left vertical plate and a right vertical plate, the top ends of which are connected by a connecting post, characterized in that, A first guide rail is provided on the opposite side of the left and right vertical plates. A moving component is slidably connected to the first guide rail. The moving component is fixed on the synchronous belt assembly. The moving component is fixedly connected to the lifting door. The top of the left synchronous belt assembly is connected to one end of the drive unit, and the other end of the drive unit is connected to the right synchronous belt assembly through the transmission assembly. A power-off brake is installed through the transmission assembly.

2. The automatic opening and closing door for an in vitro diagnostic device according to claim 1, characterized in that, The moving component includes a slider, one side of which is slidably connected to a first guide rail, and the other side is connected to a fixed block.

3. An automatic opening and closing door for an in vitro diagnostic device according to claim 2, characterized in that, The timing belt of the fixing block and the timing belt assembly is fixedly connected, and the fixing block is T-shaped.

4. An automatic opening and closing door for an in vitro diagnostic device according to claim 1 or 3, characterized in that, The fixed block is fixedly connected to the movable block on one side. The movable block is L-shaped and has several mounting holes on its outer surface.

5. An automatic opening and closing door for an in vitro diagnostic device according to claim 1, characterized in that, A driven shaft is fixed at the bottom of the opposite surfaces of the left and right vertical plates, and a driven wheel is mounted on the driven shaft.

6. An automatic opening and closing door for an in vitro diagnostic device according to claim 5, characterized in that, The driven wheel is connected to the driving wheel located at the top of the opposite surfaces of the left and right vertical plates via a synchronous belt. The driving wheel on the left side is connected to the drive shaft on the left side of the drive unit.

7. An automatic opening and closing door for an in vitro diagnostic device according to claim 1 or 6, characterized in that, The drive unit is fixed on a fixed bracket, which is fixed to the lower surface of the connecting rod. A coupling is installed on the right end shaft of the drive unit.

8. An automatic opening and closing door for an in vitro diagnostic device according to claim 7, characterized in that, The coupling is connected to one end of the drive shaft, and the other end of the drive shaft is connected to the drive wheel on the right side.

9. An automatic opening and closing door for an in vitro diagnostic device according to claim 1, characterized in that, The lifting door has a second guide rail near both sides of the mounting surface, and a guide rail fixing block is slidably installed on the second guide rail.

10. An automatic opening and closing door for an in vitro diagnostic device according to claim 9, characterized in that, The guide rail fixing block is fixedly installed on the connecting column. The end of the second guide rail is provided with a zero position plate, and the side of the guide rail fixing block facing the zero position plate is provided with an induction switch.

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