Interlocking mechanism for delivery window
By introducing an electronic interlock control unit and a double-door airtight structure into the pass-through window, the problem of accidental opening caused by lock failure was solved, and the fireproof and soundproof performance was improved, meeting the safety standards of infectious disease hospitals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2026-03-31
AI Technical Summary
The existing pass-through window locks lack electronic interlocking, which means that another door may be opened accidentally if the lock fails, and the fireproof and soundproof performance is also weak.
An interlocking mechanism for a pass-through window was designed, employing an electronic interlocking control unit, including a controller, electric bolt lock, buttons, and indicator lights, to ensure that one door cannot be opened simultaneously when another door is open, and to enhance fire resistance, sealing, and sound insulation performance through a double-door airtight structure and lever principle.
It prevents another door from opening in the event of a lock failure, meets the infection control requirements of the building design code for infectious disease hospitals, and improves the airtightness, fire resistance, and sound insulation performance of the pass-through window.
Smart Images

Figure CN224064219U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pass-through window technology, and in particular to an interlocking mechanism for pass-through windows. Background Technology
[0002] A pass-through window is a device used for transferring materials between clean and non-clean areas or between clean areas of different cleanliness levels. Its main functions include: effectively reducing the risk of cross-contamination between different areas, maintaining air cleanliness in clean areas, and providing a convenient way to transfer items. Existing pass-through windows generally have the following advantages: good airtightness to prevent outside air from entering the clean area, and ease of daily cleaning. They are commonly used in industries with high cleanliness requirements, such as pharmaceuticals, medical devices, electronics, and food. They typically adhere to specific industry standards and specifications to ensure their performance and safety. Depending on the cleanliness level, pass-through windows can be divided into multiple levels. The window body is usually made of corrosion-resistant and easy-to-clean materials and can be customized to meet the requirements of different scenarios. With technological advancements, some pass-through windows have intelligent functions, such as automatic recording and alarms.
[0003] Although existing pass-through windows have good performance, their structure has the following problems in actual use: the locks of existing pass-through windows do not have electronic interlocking function, so if the locks malfunction, the other door may be opened; secondly, the fireproof and soundproof performance of the existing pass-through window door is weak. Therefore, an interlocking mechanism for pass-through windows is needed to solve the above problems. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an interlocking mechanism for a pass-through window.
[0005] This utility model is achieved through the following technical solution:
[0006] An interlocking mechanism for a pass-through window includes a housing, a left door installed on one side of the housing, and a right door installed on the other side of the housing. The left and right doors have the same surface structure. A left lock body is bolted to one side of the front of the left door, and a right lock body is bolted to one side of the front of the right door. A left lock shell is installed outside the left lock body, and a right lock shell is installed outside the right lock body. Light covers are snapped into the front and back of the housing.
[0007] As can be seen, in the above technical solution, the inner shell of this device is a complete transfer channel. The left door and the right door are installed on both sides of the shell, and ultraviolet lamps are installed on the front and back of the shell for sterilization.
[0008] Optionally, in one possible implementation, rollers are installed at the top of the left and right lock bodies, and electric bolt locks are provided at the bottom of the left and right lock bodies. It can be seen that the structures of the left and right lock bodies are identical in the above technical solution.
[0009] Optionally, in one possible implementation, the outer end of the roller is connected to an outer main handle, and an outer fixed shaft is installed on one side of the front of both the left and right doors. An outer rotating shaft is movably connected to the front of the outer fixed shaft, and a main shaft core passes through the middle of the outer rotating shaft. It can be seen that in the above technical solution, the outer fixed shaft, the outer rotating shaft, and the main shaft core together constitute a rotation limiting assembly used to restrict the rotation of the outer main handle.
[0010] Optionally, in one possible implementation, the square area on the front of the left and right doors serves as a window, and each of the windows on the front of the left and right doors is equipped with a rotating flange. The rotating flange rotates clockwise to open. It can be seen that in the above technical solution, the back of the outer main handle is connected to the rotating flange. When the outer main handle rotates, it can drive the rotating flange to open. Clockwise rotation of the rotating flange opens the door, and counterclockwise rotation closes it.
[0011] Optionally, in one possible implementation, hinge bases are installed at the top and bottom of the opposite side of the left and right doors. An eccentric embedded rotor is connected to the top of each hinge base, and a set screw is installed at the top of the eccentric embedded rotor. A hinge rotor is connected to one side of the set screw, and a hinge pin passes through the top of the set screw. It can be seen that in the above technical solution, both sides of the window on the door panels are connected by a hinge assembly consisting of a hinge base, an eccentric embedded rotor, a set screw, a hinge rotor, and the topmost hinge pin.
[0012] Optionally, in one possible implementation, an adjustment switch is bolted to one side of the front of both the left and right doors. A switch button is embedded at the top of the front of the adjustment switch, and a UV lamp switch is embedded at the bottom of the front of the adjustment switch. It can be seen that in the above technical solution, the UV lamp switch can directly activate the internal UV lamp.
[0013] Optionally, in one possible implementation, sealing strips are installed between the housing and both the left and right doors; adjustable hinges are installed at the connections between the sides of the housing and the top of the door panels; a gap is provided between the housing and the door panels; and a fireproof sealing strip is installed within the gap between the housing and the door panels. It can be seen that in the above technical solution, the sealing strip and fireproof sealing strip structure can enhance the sound insulation effect of the structure while improving its fire resistance.
[0014] The beneficial effects of this utility model are:
[0015] This equipment meets the relevant infection control requirements stipulated in the architectural design code for infectious disease hospitals, as well as fire prevention and sound insulation requirements. The pass-through window uses mechanical clamping and electronic interlocking. In the event of a malfunction, the other door is not allowed to open. The electronic interlocking control unit of the pass-through window consists of a controller, electric bolt lock, buttons, indicator lights, etc. Under normal circumstances, the electric bolt locks of both doors are in the retracted state. When one door is opened, the electric bolt lock of the other door pops out to prevent simultaneous opening, thus ensuring the interlocking of the pass-through window. When the door is open or closed, the indicator light will display different colors according to the feedback signal from the electric bolt lock, solving the problem that existing pass-through window locks do not have electronic interlocking function, and if the lock malfunctions, the other door may open.
[0016] This equipment adopts a double-door sealed design and utilizes the lever principle to apply pressure to the doors, causing the fireproof sealing strips on the door panels to deform, ensuring the airtightness and fireproof integrity of the pass-through window, and solving the problem of weak fireproof and soundproof performance of existing pass-through window door panels. Attached Figure Description
[0017] Figure 1 A front view according to the present invention is shown;
[0018] Figure 2 A side view according to the present invention is shown;
[0019] Figure 3 An axonometric view according to the present invention is shown;
[0020] Figure 4 An internal sectional view of the housing according to the present invention is shown;
[0021] Figure 5 A structural diagram of the right lock body according to the present invention is shown;
[0022] Figure 6 A diagram showing the sealing configuration of the pass-through window door according to this utility model is provided.
[0023] Figure 7 The circuit control diagram of the double-door interlock controller according to the present invention is shown.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Housing; 2. Left door; 3. Right door; 4. Left lock body; 5. Right lock body; 6. Lamp cover; 7. Hinge pin; 8. Left lock housing; 9. Right lock housing; 10. Eccentric embedded rotor; 11. Sealing strip; 12. Switch button; 13. Adjustment switch; 14. Set screw; 15. Hinge base; 16. UV lamp switch; 17. Hinge rotor; 18. Outer rotating shaft; 19. Main shaft core; 20. Outer fixed shaft; 21. Outer main handle; 22. Roller; 23. Electric bolt lock; 24. Fireproof sealing strip; 25. Adjustable hinge; 26. Rotating flange. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0027] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0028] Example 1: As Figure 1-7 As shown, this embodiment provides an interlocking mechanism for a pass-through window, including a housing 1. A left door 2 is installed on one side of the housing 1, and a right door 3 is installed on the other side of the housing 1. The left door 2 and the right door 3 have the same surface structure. A left lock body 4 is bolted to one side of the front of the left door 2, and a right lock body 5 is bolted to one side of the front of the right door 3. A left lock shell 8 is installed on the outside of the left lock body 4, and a right lock shell 9 is installed on the outside of the right lock body 5. A lamp cover 6 is snapped into both the front and back of the housing 1. A roller 22 is installed at the top of the left lock body 4 and the right lock body 5. An electric bolt lock 23 is provided at the bottom of the left lock body 4 and the right lock body 5. An external main handle 21 is connected to the outer end of the roller 22. An external fixed shaft 20 is installed on one side of the front of the left door 2 and the right door 3. An external rotating shaft 18 is movably connected to the front of the external fixed shaft 20. A main shaft core 19 passes through the middle of the external rotating shaft 18.
[0029] Usage process:
[0030] The inner housing 1 of this device is a complete transmission channel. The left door 2 and the right door 3 are installed on the two sides of the housing 1 respectively. Ultraviolet lamps are installed on the front and back of the housing 1 for sterilization. The structures inside the left lock body 4 and the right lock body 5 are the same. The outer fixed shaft 20, the outer rotating shaft 18 and the main shaft core 19 together constitute a rotation limit assembly for limiting the rotation of the outer main handle 21.
[0031] In this device, the electronic interlock control unit for the pass-through window consists of a controller, an electric bolt lock 23, a switch button 12, and indicator lights. Under normal circumstances, the electric bolt locks 23 on both doors are in the retracted state. When one door is opened, the electric bolt lock 23 on the other door pops out to prevent simultaneous opening, thus ensuring the interlocking of the pass-through window. When the door is open or closed, the indicator lights will display different colors according to the feedback signal from the electric bolt lock. It should be noted that the control terminal of the electric bolt lock 23 and the controller are wirelessly connected. After the electric bolt lock 23 pops out, the internal control chip will operate and feed this signal back to the control terminal, which will then transmit it to the controller. After receiving the signal, the controller will control the indicator lights.
[0032] Example 2: As Figure 1-7 As shown, this embodiment provides an interlocking mechanism for a pass-through window. The square areas on the front of the left door 2 and the right door 3 are windows. Each window on the front of the left door 2 and the right door 3 is equipped with a rotating flange 26. Rotating the rotating flange 26 clockwise opens the window. Hinge bases 15 are installed at the top and bottom of the other side of the front of the left door 2 and the right door 3. An eccentric embedded rotor 10 is connected to the top of the hinge base 15. A set screw 14 is installed at the top of the eccentric embedded rotor 10. A hinge rotor 17 is connected to one side of the set screw 14. A hinge pin 7 passes through the top of the set screw 14. An adjustment switch 13 is bolted to one side of the front of the left door 2 and the right door 3. A switch button 12 is embedded in the top of the front of the adjustment switch 13. An ultraviolet lamp switch 16 is embedded in the bottom of the front of the adjustment switch 13. A sealing strip 11 is installed between the housing 1 and the left door 2 and the right door 3. Adjustable hinges 25 are installed at the connection between the two sides of the housing 1 and the top of the door panel. A gap is provided between the housing 1 and the door panel. A fireproof sealing strip 24 is installed in the gap between the housing 1 and the door panel.
[0033] Usage process:
[0034] The outer main handle 21 is connected to the rotating flange 26 on the back. When the outer main handle 21 is rotated, it can drive the rotating flange 26 to open. The rotating flange 26 is opened when rotated clockwise and closed when rotated counterclockwise. Both sides of the window on the door panels are connected by a hinge assembly consisting of a hinge base 15, an eccentric embedded rotor 10, a set screw 14, a hinge rotor 17, and the top hinge pin 7. The ultraviolet lamp switch 16 can directly start the internal ultraviolet lamp. The structure of the sealing strip 11 and the fireproof sealing strip 24 here can enhance the sound insulation effect of the structure and improve the fire resistance.
[0035] This equipment adopts a double-door sealed design, utilizing the lever principle to apply pressure to the doors, causing deformation of the fireproof sealant strips in the door panels, ensuring the airtightness and fireproof integrity of the pass-through window. The main body is made of 1.5mm thick 316L brushed stainless steel, which has a melting point of approximately 1450℃ and excellent fire resistance. Both the shell and door panels have a double-layer structure, internally filled with high-temperature resistant ceramic fiber cotton. The main material is aluminum silicate, and the ceramic fiber filler can withstand temperatures up to 1260℃ with a thermal conductivity as low as 0.040W / mk, ensuring effective heat insulation. The filler also provides excellent sound insulation, achieving noise reduction of over 30dB. Furthermore, ceramic fiber cotton is filled between the shell and the inner liner, as well as between the inner and outer door panels.
[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. An interlock mechanism for a pass-through window, characterized by comprising: Including the shell, one side of the shell is installed with left door, the other side of the shell is installed with right door, the surface structure of left door and right door is same, the front side of left door is bolted with left lock body, the front side of right door is bolted with right lock body, the outside of left lock body is installed with left lock shell, the outside of right lock body is installed with right lock shell, the front and back of the shell are clamped with lamp cover.
2. The interlock mechanism for a transfer window according to claim 1, wherein The top of left lock body and right lock body is installed with roller, the bottom of left lock body and right lock body is provided with electric plug lock.
3. The interlock mechanism for a transfer window according to claim 2, wherein The outer end of roller is connected with outer main handle, the front side of left door and right door is installed with outer fixed shaft, the front of outer fixed shaft is movably connected with outer rotating shaft, the middle part of outer rotating shaft is penetrated with main shaft core.
4. The interlock mechanism for a transfer window according to claim 3, wherein The square area of front side of left door and right door is window, the rotating flange is arranged on the window of front side of left door and right door, the rotating flange is opened by clockwise rotation.
5. The interlock mechanism for a transfer window according to claim 4, wherein The top and bottom of the other side of front side of left door and right door is installed with hinge base, the top end of hinge base is connected with eccentric embedded rotor, the top end of eccentric embedded rotor is installed with top wire, one side of top wire is connected with hinge rotor, the top end of top wire is penetrated with hinge pin.
6. The interlock mechanism for a transfer window according to claim 5, wherein The front side of left door and right door is bolted with adjusting switch, the top of front side of adjusting switch is embedded with switch button, the bottom of front side of adjusting switch is embedded with ultraviolet lamp switch.
7. The interlock mechanism for a transfer window according to claim 6, wherein The seal strip is installed between the shell and left door and right door, the adjustable hinge is installed at the connection of both sides of shell and top of door plate, the gap is arranged between the shell and door plate, the fireproof seal strip is installed in the gap between the shell and door plate.