Facial mask applying property testing device

Abstract

The utility model relates to the technical field of facial mask performance detection, in particular to a facial mask adhesion testing device which comprises a detection box body provided with a detection cavity. The detection box body is provided with an overturning frame rotationally connected to the inner wall of the detection cavity, a detection platform which is arranged on the overturning frame and is used for placing a mask, a displacement detection mechanism which is arranged on the overturning frame and is used for carrying out displacement detection on the mask on the detection platform, and a detection driving part for driving the overturning frame to rotate; the overturning frame is provided with a center shaft rotationally connected to the inner wall of the detection cavity, and the detection platform is located on one side of the center shaft. The method has the effect of improving the accuracy and reliability of the mask application detection result.

Description

Technical Field

[0001] This application relates to the field of facial mask performance testing technology, and in particular to a facial mask fit testing device. Background Technology

[0002] As consumers increasingly demand higher quality skincare, the quality and user experience of face masks, as an important part of daily skincare, have received significant attention. Therefore, accurately assessing the fit of face masks has become a major challenge for the cosmetics industry. While some testing instruments for face mask performance exist on the market, they still have limitations in simulating real-world usage conditions. For example, they cannot reproduce the user's actual experience, particularly regarding the impact of dynamic environments on mask performance, making it difficult to accurately reflect the actual skin-fitting properties of the mask. Therefore, further improvements are needed. Utility Model Content

[0003] In order to test the mask application performance and improve the accuracy and reliability of the mask application test results, this application provides a mask application performance testing device.

[0004] The mask fit testing device provided in this application adopts the following technical solution:

[0005] A mask fit testing device includes a testing chamber with a testing cavity. The testing chamber is provided with a flip frame rotatably connected to the inner wall of the testing cavity, a testing platform disposed on the flip frame for placing the mask, a displacement detection mechanism disposed on the flip frame for detecting the displacement of the mask on the testing platform, and a detection drive for driving the flip frame to rotate. The flip frame is provided with a central shaft rotatably connected to the inner wall of the testing cavity, and the testing platform is located on one side of the central shaft.

[0006] By adopting the above technical solution, the mask to be tested is first laid flat on the testing platform. The testing drive component drives the flipping frame to slowly accelerate to a predetermined speed, thereby causing the testing platform to rotate around the central axis. Due to the centrifugal force, the mask will exhibit varying degrees of slippage. The slippage data of the mask is detected by the displacement detection mechanism, thereby indirectly reflecting the adhesion strength of the mask. This not only simulates the dynamic changes in the actual use environment, but also effectively reduces the influence of human factors on the test results, ensuring the standardization and automation of the testing process, and improving the reliability and accuracy of the test results.

[0007] Preferably, the flipping frame includes a pair of parallel and spaced rotating side plates, a first horizontal plate fixedly connected between one end of the two rotating side plates, and a second horizontal plate fixedly connected between the other end of the two rotating side plates. The central axis is fixedly connected to the middle of the rotating side plates. The detection platform is located inside the second horizontal plate. The displacement detection mechanism includes a visual inspection camera located inside the first horizontal plate to detect the displacement of the mask on the detection platform.

[0008] By adopting the above technical solution, the design of the flipping frame enables the testing platform to stably support the mask and maintain good stability during the testing process. The structural design of the rotating side plate and the first and second horizontal plates ensures the robustness and durability of the entire flipping frame, improving the overall rigidity of the device. The visual inspection camera can monitor the displacement of the mask in real time during its rotation, providing high-precision testing data and effectively improving the accuracy and reliability of the mask fit test.

[0009] Preferably, the displacement detection mechanism further includes a lamp holder fixedly connected to the outer wall of the visual inspection camera, and the lamp holder is equipped with an illumination lamp for illuminating the mask on the detection platform.

[0010] By adopting the above technical solutions, the addition of lamp holders and lighting lamps can effectively improve the lighting conditions of the testing environment, ensure that the visual inspection camera obtains clear images of the mask, improve the accuracy and precision of displacement detection, reduce misjudgments caused by insufficient light, and enhance the reliability and stability of the entire testing device.

[0011] Preferably, the visual inspection camera is slidably connected to the first horizontal plate in the direction of moving closer to or further away from the inspection platform, and the first horizontal plate is provided with an adjustment component for adjusting the sliding position of the visual inspection camera.

[0012] By adopting the above technical solution, the visual inspection camera can adjust its distance from the inspection platform according to actual testing needs, ensuring inspection accuracy. Specifically, when the material or thickness of the mask changes, the camera position can be flexibly adjusted by adjusting the components to ensure the camera always maintains the optimal shooting distance, thereby obtaining clearer and more accurate displacement data and improving the reliability and accuracy of test results.

[0013] Preferably, the visual inspection camera is fixedly connected to a camera mounting base located inside the first horizontal plate, and the camera mounting base is fixedly connected to an optical axis that slides through the first horizontal plate. The adjustment assembly includes an adjustment screw threaded through the first horizontal plate and a handle coaxially fixedly connected to one end of the adjustment screw. The other end of the adjustment screw is rotatably connected to the camera mounting base, and the handle is located on the outside of the first horizontal plate.

[0014] By adopting the above technical solution, the sliding connection design between the camera mount and the first horizontal plate allows the visual inspection camera to be flexibly adjusted in the direction of moving closer to or further away from the inspection platform. The adjustment components include an adjustment screw and a handle, which can precisely control the position of the visual inspection camera, ensuring that the distance between the camera and the inspection platform is adapted to different sizes of masks, thus improving inspection accuracy and adaptability. At the same time, this design facilitates manual adjustment by operators, simplifies the equipment debugging process, and improves work efficiency.

[0015] Preferably, the detection platform includes a detection base disposed on the flip frame and a simulated shelf detachably connected to the detection base. The simulated shelf is a medical silicone plate, and the end face of the detection base near the displacement detection mechanism has scale lines located on the outside of the simulated shelf.

[0016] By adopting the above technical solution, the simulated placement plate is made of medical-grade silicone material, which can more realistically simulate the skin surface and improve the accuracy of the test. By changing the simulated placement plate for different skin types (dry, oily, and combination), the fit of the mask on different skin types can be obtained. At the same time, the test base is equipped with scale lines to facilitate precise measurement of the sliding distance of the mask at different positions, ensuring the reliability and consistency of the test results.

[0017] Preferably, the end face of the detection base near the displacement detection mechanism is provided with a groove for placing the simulated display board. The detection base is provided with elastic buckles to fix the simulated display board. Multiple elastic buckles are provided and distributed around the periphery of the groove. Each elastic buckle includes a rotating rod located outside the groove and rotatably connected to the detection base, a pressure block that slides axially on the rotating rod, and a spring provided between the pressure block and the rotating rod that normally forces the pressure block to slide towards the detection base. The free end of the pressure block is normally pressed against the simulated display board, and the free end of the pressure block can rotate around the axis of the rotating rod to be located outside the simulated display board.

[0018] By adopting the above technical solution, the testing base is equipped with a groove for placing the simulated display board, ensuring the stability of the board during testing and preventing positional shifts that could affect the accuracy of test results. The elastic clamp design securely fixes the simulated display board within the groove, preventing loosening or detachment during high-speed rotation, thus improving testing safety and reliability. Simultaneously, the free end of the clamping block can rotate around the axis of the rotating rod, facilitating quick loading and unloading of the simulated display board, simplifying the operation process and improving testing efficiency. The spring design ensures the clamping block remains firmly pressed against the simulated display board under normal conditions, guaranteeing a secure hold.

[0019] Preferably, the bottom inner wall of the groove is fixedly connected with a positioning protrusion, the simulated placement plate is provided with a positioning hole for inserting the positioning protrusion, and the free end face of the pressure block is provided with an insertion hole for inserting the positioning protrusion.

[0020] By adopting the above technical solution, the cooperation between the positioning protrusion and the positioning hole ensures accurate positioning of the simulated display board on the testing base, avoiding testing errors caused by positional deviation and improving the accuracy of test results. Simultaneously, the insertion hole on the free end face of the pressure block, in cooperation with the positioning protrusion, further prevents the free end of the pressure block from rotating around the axis of the rotating rod without human intervention during the rotation of the testing platform, improving the stability of the simulated display board and preventing it from moving or falling off during testing.

[0021] Preferably, the detection base is equipped with a heating element for heating the simulated display board.

[0022] By adopting the above technical solution, the testing base is equipped with a heating element that heats the simulated placement plate, which can simulate the temperature environment of human skin during the test, so that the adhesion performance of the mask under near-real-world usage conditions can be more accurately evaluated, thus improving the reliability and accuracy of the test results.

[0023] Preferably, one side of the detection chamber has a detection opening communicating with the detection cavity, the detection chamber is provided with a detection door panel for controlling the opening and closing of the detection opening, the detection door panel has a transparent observation window, and the detection chamber is provided with a humidifier for adjusting the humidity inside the detection cavity.

[0024] By adopting the above technical solution, a testing opening is provided on one side of the testing chamber, and its opening and closing are controlled by a testing door panel. This allows operators to easily insert or remove the mask to be tested. Closing the testing door panel creates a closed testing chamber, while a transparent observation window facilitates real-time observation of changes in the mask. The humidifier simulates different climatic conditions, enabling comprehensive testing of the mask's application performance under varying humidity levels.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. First, the mask to be tested is laid flat on the testing platform. The testing drive unit drives the flipping frame to slowly accelerate to the predetermined speed, thereby causing the testing platform to rotate around the central axis. Due to the centrifugal force, the mask will slide to varying degrees. The sliding data of the mask is detected by the displacement detection mechanism, which indirectly reflects the adhesion strength of the mask. This method can not only simulate the dynamic changes in the actual use environment, but also effectively reduce the influence of human factors on the test results, ensure the standardization and automation of the testing process, and improve the reliability and accuracy of the test results.

[0027] 2. Adding lamp holders and lighting lamps can effectively improve the lighting conditions of the testing environment, ensure that the visual inspection camera obtains clear images of the film, improve the accuracy and precision of displacement detection, reduce misjudgments caused by insufficient light, and enhance the reliability and stability of the entire testing device;

[0028] 3. The simulated skin tray is made of medical-grade silicone, which more realistically simulates the skin surface and improves the accuracy of the test. By changing the simulated skin tray to match different skin types (dry, oily, combination), the fit of the mask on different skin types can be obtained. Meanwhile, the test base is equipped with graduations to facilitate precise measurement of the mask's sliding distance at different positions, ensuring the reliability and consistency of the test results. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a mask fit testing device in Example 1.

[0030] Figure 2 This is a schematic diagram of the internal structure of the detection box in Example 1.

[0031] Figure 3 This is a schematic diagram of the flipping frame and displacement detection mechanism in Example 1.

[0032] Figure 4 This is a schematic diagram of the adjustment component in Example 1.

[0033] Figure 5 This is a schematic diagram of the detection platform in Example 1.

[0034] Figure 6 This is a schematic diagram of the detection base in Example 1.

[0035] Figure 7 This is a schematic diagram of the elastic buckle in Example 1.

[0036] Figure 8 This is a schematic diagram of the internal structure of the detection box in Example 2.

[0037] Figure 9 This is a schematic diagram of the detection base in Example 3.

[0038] Figure 10 This is a schematic diagram of the detection platform in Example 4.

[0039] Figure 11 This is a structural schematic diagram of the water tank and simulated shelf in Example 4.

[0040] Figure 12 This is a schematic diagram of the connection structure between the detection base and the simulated shelf in Example 5.

[0041] Figure 13 This is a schematic diagram of the pressure block in Example 5.

[0042] Explanation of reference numerals in the attached drawings: 1. Detection chamber; 11. Detection cavity; 12. Power distribution cavity; 13. Sliding cavity; 14. Detection door panel; 141. Transparent observation window; 15. Power distribution door panel; 16. Touch screen; 17. Humidifier; 2. Flip frame; 21. Rotating side panel; 22. First horizontal plate; 23. Second horizontal plate; 24. Central shaft; 3. Detection platform; 31. Detection base; 32. Simulated shelf; 321. Connecting pipe; 322. Positioning hole; 33. Groove; 331. Heating tank; 332. Positioning protrusion; 34. Heating element; 35. Water inlet. 36. Outlet pipe; 37. Water tank; 371. Water supply pump; 38. Control valve; 4. Displacement detection mechanism; 41. Visual inspection camera; 42. Lamp holder; 43. LED light; 44. Camera mounting base; 45. Optical axis; 46. Adjustment assembly; 461. Adjustment screw; 462. Handle; 5. Rotary motor; 51. Hollow reducer; 52. Origin sensor; 6. Water collection drawer; 7. Elastic buckle; 71. Rotating rod; 711. Anti-detachment plate; 72. Pressure block; 721. Through hole; 722. Mounting ring; 723. Insertion hole; 73. Spring. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0044] Example 1:

[0045] This application discloses a mask fit testing device, referring to... Figure 1 , Figure 2 The test chamber 1 includes a test chamber 11, a power distribution chamber 12 located on one side of the test chamber 11, and a sliding chamber 13 located below the test chamber 11. The bottom inner wall of the test chamber 11 is provided with a drainage hole that communicates with the sliding chamber 13.

[0046] The side wall of the detection housing 1 has a detection opening communicating with the detection chamber 11 and a power distribution opening communicating with the power distribution chamber 12. The detection housing 1 is provided with a detection door panel 14 for controlling the opening and closing of the detection opening and a power distribution door panel 15 for controlling the opening and closing of the power distribution opening. In this embodiment, the detection door panel 14 is a double-opening door panel, one side of which is hinged to the detection housing 1, and the free end of which is magnetically fixed to the detection housing 1. The detection door panel 14 has a transparent observation window 141. The power distribution door panel 15 is a single-opening door panel, one side of which is hinged to the detection housing 1, and the free end of which is fixed to the detection housing 1 by a power distribution box lock. A touch screen 16 for controlling the operation of the device is fixedly connected to the side wall of the detection housing 1.

[0047] Reference Figure 2 , Figure 3 The detection chamber 1 is equipped with a flipping frame 2 rotatably connected to the inner wall of the detection chamber 11, a detection platform 3 set on the flipping frame 2 for placing the face mask, a displacement detection mechanism 4 set on the flipping frame 2 for displacement detection of the face mask on the detection platform 3, a detection drive component for driving the flipping frame 2 to rotate, and a water collection drawer 6 slidably connected to the sliding chamber 13 and having an open top. The water collection drawer 6 collects the water discharged from the detection chamber 11.

[0048] The flipping frame 2 includes a pair of parallel and spaced-apart rotating side plates 21, a first horizontal plate 22 fixedly connected between one end of the two rotating side plates 21, and a second horizontal plate 23 fixedly connected between the other ends of the two rotating side plates 21. The first horizontal plate 22 and the second horizontal plate 23 are parallel, and the first horizontal plate 22 is perpendicular to the rotating side plates 21. A level instrument located on one side of the detection platform 3 is fixedly connected to the end face of the first horizontal plate 22 near the second horizontal plate 23. A central shaft 24 is fixedly inserted through the middle sidewall of each of the two rotating side plates 21. The central shaft 24 is horizontally oriented and rotatably connected to the inner wall of the detection cavity 11. The end of the central shaft 24 near the power distribution cavity 12 extends into the power distribution cavity 12 and is coaxially opened with a wire hole communicating with the power distribution cavity 12. The detection drive is a rotary motor 5 fixedly connected to the inner wall of the power distribution cavity 12. The rotary motor 5 is a servo motor. The output shaft of the rotary motor 5 and the central shaft 24 are driven by a hollow reducer 51. The hollow reducer 51 is built into the detection cavity 11. The outer wall of the housing of the hollow reducer 51 is fixedly connected to the origin sensor 52. When the rotating side plate 21 is rotated to the vertical state, the origin sensor 52 is directly opposite the rotating side plate 21.

[0049] Reference Figure 3 , Figure 4The displacement detection mechanism 4 includes a visual inspection camera 41 disposed on the inner side of the first horizontal plate 22 to detect the displacement of the mask on the detection platform 3, and a lamp holder 42 fixedly connected to the outer wall of the visual inspection camera 41. An LED light 43 is disposed on the lower end face of the lamp holder 42, and multiple LED lights 43 are arranged and distributed around the shooting port of the visual inspection camera 41. In this embodiment, the visual inspection camera 41 is slidably connected to the first horizontal plate 22 in a direction closer to or further away from the detection platform 3. Specifically, the visual inspection camera 41 is fixedly connected to a camera mounting base 44 located on the inner side of the first horizontal plate 22. The camera mounting base 44 is fixedly connected to an optical axis 45 that slides through the first horizontal plate 22. Two optical axes 45 are provided and distributed along the length direction of the first horizontal plate 22, and the axis of the optical axis 45 is perpendicular to the surface of the first horizontal plate 22. The first horizontal plate 22 is fixedly fitted with a flange nut. The first horizontal plate 22 is provided with an adjustment assembly 46 for adjusting the sliding position of the vision inspection camera 41. The adjustment assembly 46 includes an adjustment screw 461 and a handle 462. The adjustment screw 461 is threaded through the flange nut. The handle 462 is coaxially fixedly connected to one end of the adjustment screw 461. The other end of the adjustment screw 461 is rotatably connected to the camera mounting base 44. The handle 462 is located on the outside of the first horizontal plate 22.

[0050] Reference Figure 5 , Figure 6 The testing platform 3 includes a testing base 31 fixedly connected to the end face of the second horizontal plate 23 near the first horizontal plate 22, and a simulated placement plate 32 detachably connected to the testing base 31. In this embodiment, the simulated placement plate 32 is a medical silicone plate. The end face of the testing base 31 near the first horizontal plate 22 has a groove 33 for placing the simulated placement plate 32.

[0051] Reference Figure 5 , Figure 7The detection base 31 is provided with elastic buckles 7 for fixing the simulated placement plate 32. Multiple elastic buckles 7 are provided and distributed around the periphery of the groove 33. The elastic buckles 7 include a rotating rod 71 located outside the groove 33 and rotatably connected to the detection base 31, a pressure block 72 that slides axially on the rotating rod 71, and a spring 73 that is provided between the pressure block 72 and the rotating rod 71 and forces the pressure block 72 to slide toward the detection base 31 under normal conditions. The pressure block 72 has a through hole 721 for the rotating rod 71 to insert into. The rotating rod 71 and the pressure block 72 are circumferentially linked through a sliding groove and a sliding convex fit. An anti-detachment plate 711 is fixedly connected to the upper end of the rotating rod 71. An installation ring 722 located below the spring 73 is fixedly connected to the inner wall of the through hole 721. The spring 73 is sleeved on the rotating rod 71. One end of the spring 73 is fixedly connected to the lower end face of the anti-detachment plate 711, and the other end of the spring 73 is fixedly connected to the upper end face of the installation ring 722. The free end of the pressure block 72 is normally pressed against the simulated placement plate 32. The free end of the pressure block 72 can rotate around the axis of the rotating rod 71 to the outside of the simulated placement plate 32. The end face of the detection base 31 near the displacement detection mechanism 4 has scale lines located on the outside of the simulated placement plate 32.

[0052] The testing steps of a mask fit testing device according to an embodiment of this application are as follows: In the initial state, the rotating side plate 21 is in a vertical state, and the first horizontal plate 22 is located above the second horizontal plate 23;

[0053] Step S1: Check that the device is in the off state to ensure safety;

[0054] Step S2: Open the detection door panel 14 and install the simulation display board 32 on the detection base 31. First, place the simulation display board 32 in the groove 33 and apply force to the pressure block 72 so that the pressure block 72 slides upward relative to the rotating rod 71. At this time, the spring 73 undergoes elastic deformation and has elastic potential energy. Then, rotate the pressure block 72 to drive the rotating rod 71 to rotate together, so that the free end of the pressure block 72 is above the edge of the simulation display board 32. Then, remove the force applied to the pressure block 72. The pressure block 72 slides downward under the action of the spring 73 and presses against the simulation display board 32 to fix the simulation display board 32 and the detection base 31.

[0055] Step S3: Lay the mask to be tested flat on the simulation placement plate 32, and the visual inspection camera 41 records the initial position data of the mask;

[0056] Step S4: Close the detection door panel 14 and set an appropriate rotation speed and time;

[0057] Step S5: Start the rotary motor 5 and begin the test program. The rotary motor 5 rotates, causing the central shaft 24 to rotate, which in turn causes the flipping frame 2 to slowly accelerate to the predetermined speed, thereby causing the detection platform 3 to rotate around the axis of the central shaft 24. Due to the centrifugal force, the mask on the detection platform 3 will exhibit different degrees of slippage. The sliding of the mask is observed through the visual inspection camera 41, and the final position data of the mask is recorded.

[0058] Step S6: After the test is completed, power off to stop the operation, and remove the sample for the next step of analysis.

[0059] The sliding data of the face mask is detected by a visual inspection camera 41, thereby indirectly reflecting the mask's adhesion strength. This not only simulates dynamic changes in the actual use environment but also effectively reduces the influence of human factors on the test results, ensuring the standardization and automation of the testing process and improving the reliability and accuracy of the test results. By changing the simulated placement plate 32 for different skin types (dry, oily, combination), the adhesion degree of the face mask on different skin types can be obtained.

[0060] Example 2:

[0061] The difference from Example 1 is that, referring to Figure 8 The testing chamber 1 is equipped with a humidifier 17 to regulate the humidity inside the testing chamber 11. Specifically, the humidifier 17 is an ultrasonic humidifier. The humidifier 17 can simulate the usage environment under different climatic conditions, facilitating comprehensive testing of the mask application performance under different humidity conditions.

[0062] Example 3:

[0063] The difference from Example 1 is that, referring to Figure 9 The detection base 31 is provided with a heating element 34 for heating the simulated display board 32. In this embodiment, a heating groove 331 is provided on the bottom inner wall of the groove 33, and the heating element 34 is a heating plate that is fixedly connected to the heating groove 331 and abuts against the lower end face of the simulated display board 32.

[0064] Example 4:

[0065] The difference from Example 3 is that, referring to Figure 10 , Figure 11The detection base 31 is fixedly connected to an inlet pipe 35 and an outlet pipe 36, which are arranged diagonally. The ports of both the inlet pipe 35 and the outlet pipe 36 extend to the bottom inner wall of the groove 33. The second horizontal plate 23 is fixedly connected to a water tank 37. The inlet pipe 35 and the outlet pipe 36 are connected to the water tank 37. The heating element 34 is a heating rod built into the water tank 37, which heats the water in the water tank 37. Both the inlet pipe 35 and the outlet pipe 36 are equipped with control valves 38 to control their opening and closing. The simulated shelf 32 has an inner cavity. The lower end face of the simulated shelf 32 is protruding and fixedly connected to a connector 321 that communicates with the inner cavity. There are two connectors 321. One connector 321 is sealed and inserted into the inlet pipe 35, and the other connector 321 is sealed and inserted into the outlet pipe 36. The water tank 37 is equipped with a water supply pump 371 that pumps the water in the water tank 37 into the inner cavity of the simulated shelf 32.

[0066] The heating rod heats the water in the water tank 37, allowing the water to enter the inner cavity of the simulated shelf 32 through the inlet pipe 35 and flow back to the water tank 37 through the outlet pipe 36, forming a circulation system. This simulates the application performance of the mask under different temperature environments, thus providing a more comprehensive evaluation of the mask's performance in actual use. Alternatively, the control valve 38 on the heating rod and outlet pipe 36 can be closed, and the water supply pump 371 pumps water from the water tank 37 into the inner cavity of the simulated shelf 32, causing the simulated shelf 32 to expand. This changes the surface roughness of the simulated shelf 32, further enhancing the evaluation of the mask's performance in actual use. After the simulated shelf 32 expands, the control valve 38 on the water supply pump 371 and the inlet pipe 35 is closed.

[0067] Example 5:

[0068] The difference from Example 1 is that, referring to Figure 12 , Figure 13 The bottom inner wall of the groove 33 is fixedly connected with a positioning protrusion 332. The simulated placement plate 32 has a positioning hole 322 for the positioning protrusion 332 to be inserted, and the free end face of the pressure block 72 has an insertion hole 723 for the positioning protrusion 332 to be inserted. The cooperation between the positioning protrusion 332 and the positioning hole 322 ensures that the simulated placement plate 32 is accurately positioned on the detection base 31, avoiding detection errors caused by positional deviation and improving the accuracy of the test results. At the same time, the insertion hole 723 on the free end face of the pressure block 72 cooperates with the positioning protrusion 332 to further prevent the free end of the pressure block 72 from rotating around the axis of the rotating rod 71 without human intervention during the rotation of the detection platform 3, thereby improving the fixing stability of the simulated placement plate 32 and preventing the simulated placement plate 32 from moving or falling off during the test.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mask fit testing device, characterized in that: The device includes a detection housing (1), which has a detection cavity (11). The detection housing (1) is provided with a flip frame (2) rotatably connected to the inner wall of the detection cavity (11), a detection platform (3) set on the flip frame (2) for placing the mask, a displacement detection mechanism (4) set on the flip frame (2) for displacement detection of the mask on the detection platform (3), and a detection drive for driving the flip frame (2) to rotate. The flip frame (2) is provided with a central shaft (24) rotatably connected to the inner wall of the detection cavity (11), and the detection platform (3) is located on one side of the central shaft (24).

2. The mask fit testing device according to claim 1, characterized in that: The flipping frame (2) includes a pair of parallel rotating side plates (21) spaced apart, a first horizontal plate (22) fixedly connected between one end of the two rotating side plates (21), and a second horizontal plate (23) fixedly connected between the other end of the two rotating side plates (21). A central shaft (24) is fixedly connected to the middle of the rotating side plates (21). The detection platform (3) is located inside the second horizontal plate (23). The displacement detection mechanism (4) includes a visual inspection camera (41) located inside the first horizontal plate (22) to perform displacement detection on the mask on the detection platform (3).

3. The mask fit testing device according to claim 2, characterized in that: The displacement detection mechanism (4) also includes a lamp holder (42) fixedly connected to the outer wall of the visual inspection camera (41), and the lamp holder (42) is equipped with a lighting lamp to illuminate the mask on the detection platform (3).

4. The mask fit testing device according to claim 2, characterized in that: The visual inspection camera (41) is slidably connected to the first horizontal plate (22) in the direction of approaching or moving away from the inspection platform (3). The first horizontal plate (22) is provided with an adjustment component (46) for adjusting the sliding position of the visual inspection camera (41).

5. The mask fit testing device according to claim 4, characterized in that: The visual inspection camera (41) is fixedly connected to a camera mounting base (44) located inside the first horizontal plate (22). The camera mounting base (44) is fixedly connected to an optical axis (45) that slides through the first horizontal plate (22). The adjustment assembly (46) includes an adjustment screw (461) threaded through the first horizontal plate (22) and a handle (462) coaxially fixedly connected to one end of the adjustment screw (461). The other end of the adjustment screw (461) is rotatably connected to the camera mounting base (44), and the handle (462) is located outside the first horizontal plate (22).

6. The mask fit testing device according to claim 1, characterized in that: The detection platform (3) includes a detection base (31) set on the flip frame (2) and a simulated shelf (32) detachably connected to the detection base (31). The simulated shelf (32) is a medical silicone plate. The end face of the detection base (31) near the displacement detection mechanism (4) has scale lines located outside the simulated shelf (32).

7. The mask fit testing device according to claim 6, characterized in that: The detection base (31) has a groove (33) for placing the simulation placement plate (32) on the end face near the displacement detection mechanism (4). The detection base (31) is provided with an elastic buckle (7) for fixing the simulation placement plate (32). There are multiple elastic buckles (7) distributed around the groove (33). The elastic buckle (7) includes a rotating rod (71) located outside the groove (33) and rotatably connected to the detection base (31), a pressure block (72) slidably sleeved on the rotating rod (71) along the axial direction, and a spring (73) located between the pressure block (72) and the rotating rod (71) and normally forces the pressure block (72) to slide towards the detection base (31). The free end of the pressure block (72) is normally pressed against the simulation placement plate (32). The free end of the pressure block (72) can rotate around the axis of the rotating rod (71) to the outside of the simulation placement plate (32).

8. The mask fit testing device according to claim 7, characterized in that: The bottom inner wall of the groove (33) is fixedly connected with a positioning protrusion (332), the simulated placement plate (32) is provided with a positioning hole (322) for the positioning protrusion (332) to be inserted, and the free end face of the pressure block (72) is provided with an insertion hole (723) for the positioning protrusion (332) to be inserted.

9. A mask fit testing device according to claim 6, characterized in that: The detection base (31) is equipped with a heating element (34) for heating the simulation display board (32).

10. The mask fit testing device according to claim 1, characterized in that: The detection chamber (1) has a detection opening connected to the detection cavity (11) on one side. The detection chamber (1) is provided with a detection door panel (14) for controlling the opening and closing of the detection opening. The detection door panel (14) has a transparent observation window (141). The detection chamber (1) is provided with a humidifier (17) for adjusting the humidity inside the detection cavity (11).

Images