A device and method for rapidly detecting the water permeability of a backpack

Abstract

This invention discloses a rapid testing device and method for backpack water seepage performance, relating to the field of water seepage performance testing. The device includes a base, a spraying component slidably mounted on the upper end of the base, a protective plate snapped onto the upper end of the base, and a support column fixedly mounted on one side of the base. This rapid testing device and method for backpack water seepage performance uses a compression component to support the inside of the backpack, demonstrating the backpack's water seepage performance under different load conditions. It recreates various load conditions that a backpack might encounter in actual use, making the water seepage test results closer to real-world usage scenarios. It simulates the relationship between the backpack's shape changes and internal stress conditions before and after carrying items and its water seepage performance, thereby obtaining more realistic water seepage performance data.

Description

Technical Field

[0001] This invention relates to water permeability testing technology, specifically to a rapid testing device and method for the water permeability of backpacks. Background Technology

[0002] Backpacks are a general term for bags carried on the back when going out or on military marches. They come in a variety of materials, with genuine leather, plastic, polyester, canvas, nylon, cotton, and linen leading the fashion trend. With the increasing popularity of outdoor activities, travel, and daily commutes, backpacks have become an indispensable tool in people's daily lives and work. The waterproof performance of a backpack directly affects the safety of the contents and the user experience; therefore, scientific testing of backpack waterproof performance is of great significance.

[0003] Chinese invention patent CN119147434A discloses a rapid testing device for the water seepage performance of backpacks. This device, through a pressing mechanism, can initially fix a polyester backpack and hold the polyester area to be tested inside the placement ring. Then, with the assistance of an extrusion mechanism, sealant can be extruded and applied around the test area of ​​the polyester backpack, avoiding manual application and improving application efficiency. Furthermore, a smoothing mechanism can evenly apply the sealant around the test area, ensuring a consistent thickness and thus guaranteeing a sealing effect and improving the accuracy of water seepage performance testing. With the above structure, the testing of polyester backpacks can be completed quickly, improving testing efficiency.

[0004] Existing equipment mainly relies on static waterproof testing, which cannot fully reproduce the actual performance of a backpack in a dynamic environment. It is difficult to accurately assess the waterproof capability of a backpack in real use. At the same time, it cannot fully consider the shape changes and internal stress of the backpack after carrying items during actual use. The weight, volume and distribution of items inside the backpack will compress its structure, thus affecting the waterproof performance. Therefore, a rapid detection device and method for backpack water seepage performance has been developed. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid detection device and method for backpack water seepage performance, so as to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid detection device for backpack water seepage performance, comprising a base (1), wherein a spraying component (11) is slidably arranged on the upper end of the base (1), characterized in that a support column (13) is fixedly arranged on one side of the base (1). The compression assembly (2) is located inside the backpack and is assembled at the lower end of the support column (13). It includes at least one set of lateral extension blocks (27) that reciprocate along the radial direction of the support column (13). Guide rails (271) are fixedly provided on both sides of the extension blocks (27), and extension plates (272) are slidably provided on the guide rails (271) through elastic elements. The extension plates (272) are used to apply adjustable compression force to different parts of the backpack to simulate the shape of the backpack under different load conditions. The active component (3), which is assembled on the upper end of the base (1), includes a vibrating cylinder (38) and at least one set of clamps (39) for locking the backpack shoulder straps. The vibrating cylinder (38) is used to drive the clamps (39) to vibrate in the vertical direction to simulate the bumpy state of the backpack in a dynamic use environment. The clamps (39) are used to lock backpacks of different sizes.

[0007] As a further optimization of the present invention, the extrusion assembly includes a docking block that engages with the lower end of the support column. A fixing cylinder is fixedly provided at the end of the docking block. Multiple sets of fixing grooves are evenly opened on the outer surface of the fixing cylinder. A fixing rod is slidably provided on the inner wall of the fixing groove. Multiple sets of connecting blocks are evenly fixedly provided on the outer surface of the fixing cylinder.

[0008] As a further optimization of the present invention, a pressing plate is slidably provided on the inner wall of the fixed cylinder, a pressing rod is fixedly provided at the lower end of the pressing plate, and a protective block is snapped onto the outer surface of the pressing rod, and the outer surface of the protective block is slidably connected to the inner wall of the fixed cylinder.

[0009] As a further optimization of the present invention, a positioning plate is fixedly provided at the lower end of the fixing rod, and multiple sets of positioning grooves are evenly provided at the end of the positioning plate. A drive plate is rotatably mounted at the middle position of the end of the positioning plate. A drive rod corresponding to the positioning groove is rotatably mounted at the end of the drive plate. A moving block is rotatably mounted at the end of the drive rod. The outer surface of the moving block is slidably connected to the inner wall of the positioning groove. At the same time, a moving rod is rotatably mounted at the end of the moving block. The end of the moving rod is rotatably connected to the end of the connecting block.

[0010] As a further optimization of the present invention, one side of the moving block is fixedly connected to the end of the extending block, and the moving block drives the extending block to reciprocate. The extension plate has a telescopic rod rotatably mounted at one end, and a support plate is rotatably mounted at the other end of the telescopic rod. A support rod is slidably mounted on one side of the support plate, and the end of the support rod is engaged with the outer surface of the fixed cylinder.

[0011] As a further optimization of the present invention, an airbag is slidably provided at the lower end of the positioning plate, and a connecting tube is fixedly provided at the upper end of the airbag, with the upper end of the connecting tube communicating with the end of the pressing rod.

[0012] As a further optimization of the present invention, the active component includes a snap-fit ​​block that snaps into the base, a power component is fixedly provided at the end of the snap-fit ​​block, a limiting plate is fixedly provided at the end of the power component, a limiting groove is provided at the end of the limiting plate, and a power block is slidably provided on the inner wall of the limiting groove.

[0013] As a further optimization of the present invention, the output end of the power component extends through and to the other end of the limiting plate, the output end of the power component is fixedly provided with a power rod, the outer surface of the power rod is snapped with a rotating cylinder, and the outer surface of the rotating cylinder is provided with a wave groove.

[0014] As a further optimization of the present invention, an annular groove is formed on the outer surface of the vibrating cylinder, and a protective ring is slidably disposed on the inner wall of the annular groove. The outer surface of the protective ring is fitted and slidably connected with the outer surface of the snap-fit ​​block. The vibrating cylinder has an arc-shaped groove inside that corresponds to the power block. The outer surface of one end of the power block is slidably connected to the inner wall of the arc-shaped groove, and the outer surface of the other end is slidably connected to the outer surface of the wave groove.

[0015] A rapid method for testing the water permeability of a backpack, employing the testing device described in any of the above-mentioned methods, the method comprising the following steps: S1. When the pressing rod moves, it drives the drive plate that is engaged with it to move. Since the drive plate and the positioning plate are interlocked and rotated in the middle, the entire positioning plate moves. Since the end of the moving rod is rotated and connected to the end of the connecting block, the moving rod drives the moving block to move along the inner wall of the positioning groove to adjust the expansion range of the extension block and achieve adaptive support for backpacks of different sizes. S2. When the drive plate rotates, it drives the airbag to rotate synchronously, so that the bottom of the airbag fits tightly against the bottom of the inner wall of the backpack, achieving uniform support for the bottom of the backpack. At the same time, the airbag can be filled with different volumes of water according to the testing requirements to simulate the bottom stress state when the backpack carries different weights of items. S3. During the rotation of the drum, the wave groove on its outer surface cooperates with the roller that fits into the end of the power block, so that the power block reciprocates linearly along the limited groove under the guidance of the wave groove, simulating various bumpy road conditions from flat road surface to rugged mountain road.

[0016] Compared with the prior art, the rapid detection device and method for backpack water seepage performance provided by the present invention have the following beneficial effects: By using compression components to support the inside of the backpack, the test demonstrates the backpack's water permeability under different load conditions, recreating various load conditions that the backpack may encounter in actual use. This makes the water permeability test results closer to real-world usage scenarios, simulating the relationship between the backpack's shape changes before and after carrying items and its internal stress and water permeability, thus obtaining more realistic water permeability data.

[0017] By subjecting the backpack to high-frequency, small-amplitude vibrations through active components, the dynamic bumps in a real-world usage environment are simulated, effectively compensating for the shortcomings of static testing in reflecting waterproof performance under actual sports scenarios. At the same time, the clamps lock backpacks of different sizes, ensuring the stability and safety of the testing process and avoiding testing errors caused by backpack displacement or shaking, further improving the repeatability and comparability of the tests.

[0018] By combining the compression and moving components, the effects of vibration and movement in actual use can be replicated, the waterproof performance of the backpack in a dynamic environment can be tested, and potential water leakage hazards that cannot be detected in static testing can be discovered. This can overcome the shortcomings of static testing and single-size fitting in existing technologies, providing a more comprehensive, accurate, and reliable test for backpack water leakage performance. At the same time, it can eliminate the bias that may be caused by a single test method, thereby improving the reliability of water leakage performance assessment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the extrusion assembly structure provided in an embodiment of the present invention; Figure 3 This is a first cross-sectional view of the internal structure of the extrusion assembly provided in an embodiment of the present invention; Figure 4 This is a second cross-sectional view of the internal structure of the extrusion assembly provided in an embodiment of the present invention; Figure 5 This is a first exploded view of the extrusion assembly structure provided in an embodiment of the present invention; Figure 6 This is a second exploded view of the extrusion assembly structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the active component structure provided in an embodiment of the present invention; Figure 8Cross-sectional view of the internal structure of an active component provided in an embodiment of the present invention. Figure 9 This is a first exploded view of the active component structure provided in an embodiment of the present invention; Figure 10 This is a second exploded view of the active component structure provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Base; 2. Extrusion assembly; 3. Movable assembly; 11. Spraying component; 12. Protective plate; 13. Support column; 21. Connecting block; 22. Fixing cylinder; 221. Fixing groove; 222. Fixing rod; 223. Connecting block; 23. Pressing plate; 231. Pressing rod; 232. Protective block; 24. Positioning plate; 241. Positioning groove; 25. Drive plate; 251. Drive rod; 26. Moving block; 261. Moving rod; 27. 271. Extension block; 272. Guide rail; 28. Extension plate; 29. ​​Telescopic rod; 201. Support plate; 202. Support rod; 21. Airbag; 22. Connecting pipe; 33. Clip block; 34. Power component; 35. Limiting plate; 36. Limiting groove; 37. Power rod; 38. Rotary drum; 39. Wave groove; 30. Protective ring; 31. Vibrating drum; 32. Annular groove; 33. Arc groove; 34. Clamping block. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example 1: Please refer to Figure 1 - Figure 10 A rapid backpack water seepage performance testing device includes a base 1, a spraying component 11 slidably disposed on the upper end of the base 1, a protective plate 12 snapped onto the upper end of the base 1, and a support column 13 fixedly disposed on one side of the base 1.

[0024] In this solution, the spraying component 11 is a common spraying device in the prior art, which can adjust the water flow rate, spray angle and duration according to the detection requirements to simulate rainfall environments of different intensities.

[0025] The protective panel 12 is made of transparent acrylic material, which makes it easy to observe the water seepage of the backpack during the testing process, while preventing the sprayed water from splashing outside the testing area.

[0026] The support column 13 is a hollow steel structure with reserved wiring channels inside for arranging the control lines of the extrusion assembly 2.

[0027] Furthermore, the extrusion assembly 2, which is assembled at the lower end of the support column 13, includes at least one set of lateral extension blocks 27 that reciprocate along the radial direction of the support column (13). Guide rails 271 are fixedly provided on both sides of the extension blocks 27, and extension plates 272 are slidably fitted into the inner wall of the guide rails 271. The extension plates 272 are used to apply adjustable extrusion force to different parts of the backpack to simulate the shape of the backpack under different load conditions.

[0028] In this embodiment, two sets of extension blocks 27 are provided and evenly distributed around the fixed cylinder 22. The extension blocks 27 can move in opposite directions at the same time to achieve synchronous compression of the inner wall of the backpack. The extension plate 272 is made of high-strength aluminum alloy and is covered with a rubber buffer layer to avoid wear when in direct contact with the backpack.

[0029] A telescopic component is provided between the extension plate 272 and the guide rail 271 to cushion the extension plate 272 when it fits against the inside of the backpack, so as to avoid excessive compression and damage to the backpack. At the same time, the extension plate 272 can be telescopically adjusted along the guide rail 271 to adapt to the internal space size of backpacks of different sizes.

[0030] Furthermore, the extrusion assembly 2 includes a docking block 21 that engages with the lower end of the support column 13. A fixing cylinder 22 is fixedly provided at the end of the docking block 21. Multiple sets of fixing grooves 221 are evenly provided on the outer surface of the fixing cylinder 22. Fixing rods 222 are slidably provided on the inner wall of the fixing grooves 221. Multiple sets of connecting blocks 223 are evenly fixedly provided on the outer surface of the fixing cylinder 22.

[0031] Specifically, the end of the docking block 21 is equipped with a telescopic component such as an electric telescopic rod, which is used to adjust the position of the compression component 2 so that it can be accurately inserted into the backpack. The docking block 21 and the support column 13 adopt a snap-fit ​​connection structure, which facilitates quick disassembly and replacement of compression components 2 of different specifications to meet the testing needs of backpacks of different sizes.

[0032] The fixing grooves 221 are evenly distributed along the axial direction of the fixing cylinder 22, providing a stable sliding guide for the fixing rod 222, ensuring the stability of the positioning plate 24 during the lifting process, and preventing deviation or shaking during movement. The connecting block 223 is an integrally formed structure with the fixing cylinder 22, used to provide a stable rotation fulcrum for the moving rod 261, ensuring the reliability of the moving rod 261.

[0033] Furthermore, a pressing plate 23 is slidably provided on the inner wall of the fixed cylinder 22, a pressing rod 231 is fixedly provided at the lower end of the pressing plate 23, and a protective block 232 is snapped onto the outer surface of the pressing rod 231, and the outer surface of the protective block 232 is slidably connected to the inner wall of the fixed cylinder 22.

[0034] Specifically, the end of the pressing plate 23 is equipped with a telescopic component such as an electric telescopic rod, which is used to drive the pressing plate 23 to move up and down. The movement stroke of the pressing plate 23 can be preset according to the testing requirements to control the inflation of the airbag 29, thereby adjusting the support force on the bottom of the backpack.

[0035] The pressing rod 231 is a hollow tubular structure with an internal flow channel. Its upper end is connected to a water source device, and its lower end is connected to an airbag 29 via a connecting pipe 291 to achieve rapid water delivery. At the same time, a water pumping pipe is installed inside the airbag 29, which extends along the inside of the pressing rod 231 to the outside and is connected to a water pumping device to counterweight the inside of the backpack and simulate water seepage performance under different weights.

[0036] Furthermore, a positioning plate 24 is fixedly installed at the lower end of the fixing rod 222, and multiple positioning grooves 241 are evenly opened at the end of the positioning plate 24; a driving plate 25 is rotatably installed at the middle position of the end of the positioning plate 24, and a driving rod 251 corresponding to the positioning groove 241 is rotatably installed at the end of the driving plate 25. A moving block 26 is rotatably installed at the end of the driving rod 251, and the outer surface of the moving block 26 is slidably connected to the inner wall of the positioning groove 241. At the same time, a moving rod 261 is rotatably installed at the end of the moving block 26, and the end of the moving rod 261 is rotatably connected to the end of the connecting block 223.

[0037] Specifically, when the pressing rod 231 moves, it drives the drive plate 25, which is engaged with it, to move. Since the drive plate 25 and the positioning plate 24 are interlocked and rotated at the middle position, the entire positioning plate 24 moves. Since the end of the moving rod 261 is rotated and connected to the end of the connecting block 223, the moving rod 261 drives the moving block 26 to move along the inner wall of the positioning groove 241 to adjust the expansion range of the extension block 27 and achieve adaptive support for backpacks of different sizes.

[0038] The positioning grooves 241 are evenly distributed along the radial direction of the positioning plate 24, providing a stable sliding guide for the moving block 26 and ensuring the straightness and stability of the moving block 26 during the movement process.

[0039] The two ends of the drive rod 251 are hinged to the drive plate 25 and the moving block 26 respectively, forming a crank-slider mechanism, which converts the linear reciprocating motion of the moving block 26 into the rotational motion of the drive plate 25.

[0040] The two ends of the moving rod 261 are hinged to the moving block 26 and the connecting block 223 respectively, forming a linkage transmission mechanism, which converts the horizontal movement of the moving block 26 into the radial extension and retraction movement of the extension block 27, thereby realizing the transmission of force and the conversion of direction.

[0041] Furthermore, one side of the movable block 26 is fixedly connected to the end of the extension block 27, and the movable block 26 drives the extension block 27 to reciprocate; the end of the extension plate 272 is rotatably provided with a telescopic rod 28, the end of the telescopic rod 28 is rotatably provided with a support plate 281, and one side of the support plate 281 is slidably provided with a support rod 282, the end of the support rod 282 is engaged with the outer surface of the fixed cylinder 22.

[0042] Specifically, the telescopic rod 28 is a telescopic rod structure used to adjust the position of the extension plate 272 so that it fits the curved shape of the inner wall of the backpack. The outer surface of the support rod 282 is provided with elastic components such as springs to support the support plate 281 so that it fits tightly against the inner wall of the backpack.

[0043] Furthermore, an airbag 29 is slidably provided at the lower end of the positioning plate 24, and a connecting tube 291 is fixedly provided at the upper end of the airbag 29. The upper end of the connecting tube 291 is connected to the end of the pressing rod 231.

[0044] Specifically, the airbag 29 is connected to the pressing rod 231 via a connecting tube 291, and the outer surface of the connecting tube 291 is engaged with the inside of the drive plate 25. This allows the airbag 29 to rotate synchronously when the drive plate 25 rotates, thus ensuring that the bottom of the airbag 29 fits tightly against the bottom of the backpack's inner wall, providing uniform support to the bottom of the backpack. The airbag 29 can also be inflated with different volumes of water according to testing needs to simulate the stress on the bottom of the backpack when carrying items of varying weights. The airbag 29 is made of highly elastic rubber, possessing excellent deformation recovery capabilities. After inflating with water, it can tightly conform to the irregular curved surface of the backpack's bottom, ensuring a uniform distribution of support force.

[0045] Furthermore, the active component 3, which is mounted on the upper end of the base 1, includes a vibration cylinder 38 and at least one set of clamps 39 for locking the backpack shoulder straps. The vibration cylinder 38 is used to drive the clamps 39 to vibrate in the vertical direction to simulate the bumpy state of the backpack in a dynamic use environment. The clamps 39 are used to lock backpacks of different sizes.

[0046] Specifically, the vibration cylinder 38 is a cylindrical hollow structure that moves back and forth in conjunction with the rotating cylinder 36 to simulate the degree of bumpiness under different road conditions; two sets of clamping blocks 39 are provided, symmetrically distributed at the upper end of the vibration cylinder 38, to lock the backpack shoulder straps. The clamping surface of the clamping blocks 39 is provided with anti-slip rubber pads to increase the friction between the clamping blocks and the backpack shoulder straps, prevent the backpack from slipping or falling off during the testing process, and avoid damage to the shoulder straps.

[0047] Furthermore, the active component 3 includes a snap-fit ​​block 31 that snaps into the base 1. A power component 32 is fixedly provided at the end of the snap-fit ​​block 31. A limiting plate 33 is fixedly provided at the end of the power component 32. A limiting groove 331 is provided at the end of the limiting plate 33. A power block 34 is slidably provided on the inner wall of the limiting groove 331.

[0048] In this embodiment, the end of the snap-fit ​​block 31 is provided with a bolt or other fixing component to lock the snap-fit ​​block 31 onto the base 1. The lower end of the snap-fit ​​block 31 is rotatably provided with a movable block, and the end of the movable block is rotatably connected to the base 1. At the same time, the movable block is provided with a pin or other fixing component to adjust the overall angle of the movable component 3 so that it can simulate the operating scenarios under different stress states and improve the detection of water seepage performance.

[0049] The power block 34 is constrained by the limiting groove 331 opened on the limiting plate 33, so that when the power block 34 is moved by force, it moves as a whole along the inner wall of the limiting groove 331.

[0050] The power component 32 is a device with power output, such as a motor, and is connected to an external control device. The power rod 35, which is fixedly installed at its output end, is driven to rotate by the power component 32.

[0051] Furthermore, the output end of the power component 32 extends through and to the other end of the limiting plate 33. A power rod 35 is fixedly provided at the output end of the power component 32. A rotating cylinder 36 is snapped onto the outer surface of the power rod 35. A wave groove 361 is provided on the outer surface of the rotating cylinder 36.

[0052] Specifically, the power rod 35 is driven to rotate by the power component 32. Since the outer surface of the power rod 35 is engaged with the rotating cylinder 36, the rotating cylinder 36 is driven to rotate synchronously. During the rotation, the wave groove 361 on the outer surface of the rotating cylinder 36 cooperates with the rollers fitted at the end of the power block 34, so that the power block 34 reciprocates linearly along the limiting groove 331 under the guidance of the wave groove 361. The distance between the crests and troughs of the wave groove 361 can be designed according to the detection requirements to adjust the vibration frequency and amplitude of the clamping block 39, simulating various bumpy road conditions from smooth roads to rugged mountain roads.

[0053] Furthermore, an annular groove 381 is formed on the outer surface of the vibrating cylinder 38, and a protective ring 37 is slidably provided on the inner wall of the annular groove 381. The outer surface of the protective ring 37 is fitted and slidably connected with the outer surface of the snap-fit ​​block 31. An arc-shaped groove 382 corresponding to the power block 34 is formed inside the vibrating cylinder 38. The outer surface of one end of the power block 34 is slidably connected with the inner wall of the arc-shaped groove 382, ​​and the outer surface of the other end is slidably connected with the outer surface of the wave groove 361.

[0054] Specifically, the protective ring 37 is a ring-shaped metal structure, which is embedded in the annular groove 381 and slides with it to limit the axial displacement of the vibrating cylinder 38. The outer edge of the protective ring 37 and the guide groove on the inner side of the snap-fit ​​block 31 form a sliding fit, providing stable lateral support for the entire vibrating cylinder 38 and preventing swaying or jamming during high-frequency vibration.

[0055] The arc-shaped groove 382 extends circumferentially along the inner wall of the vibrating cylinder 38, forming an inclined spiral guide structure. Its inclination angle matches the wave rise angle of the wave groove 361. When the power block 34 moves horizontally back and forth along the limiting groove 331 under the drive of the wave groove 361, the end of the power block 34 slides synchronously along the arc-shaped groove 382, ​​converting the horizontal linear motion into the vertical lifting motion of the vibrating cylinder 38. The groove width of the arc-shaped groove 382 is slightly larger than the end diameter of the power block 34, which ensures smooth sliding and leaves an appropriate fit clearance to accommodate the lubricating medium and reduce wear during long-term operation.

[0056] The end of the clamp 39 is equipped with a telescopic component such as an electric push rod to adjust the distance between the two sets of clamps 39 to accommodate the clamping needs of backpack shoulder straps of different widths. The clamping surface of the clamp 39 adopts an arc-shaped concave design to match the curved shape of the shoulder strap, ensuring a uniform distribution of clamping force and avoiding local stress concentration that could lead to shoulder strap deformation or damage.

[0057] The end of the clamping block 39 is also equipped with a pressure sensor to monitor the magnitude of the clamping force in real time and feed the data back to the external control device. When the clamping force exceeds the preset threshold, the protection mechanism is automatically triggered to prevent excessive compression of the backpack. At the same time, the clamping block 39 is embedded with a heating element, which can locally heat the shoulder strap area during the test to simulate the temperature environment generated when the human body carries the backpack, and further verify the water permeability performance of the backpack material under the coupled effect of temperature and humidity.

[0058] The control device can choose a microcontroller as the control terminal. In this embodiment, the microcontroller is a typical embedded microcontroller unit, consisting of an arithmetic logic unit (ALU), a controller, memory, input / output devices, etc., essentially a miniature computer. Compared to general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its biggest advantage is its small size, allowing it to be placed inside the instrument, but it has limited storage capacity, simple input / output interfaces, and low power consumption.

[0059] Example 2: A rapid method for testing the water permeability of a backpack, using any of the testing devices described above, the method includes the following steps: S1. When the pressing rod 231 moves, it drives the drive plate 25 that is engaged with it to move. Since the drive plate 25 and the positioning plate 24 are interlocked and rotated, the entire positioning plate 24 moves. Since the end of the moving rod 261 is rotated and connected to the end of the connecting block 223, the moving rod 261 drives the moving block 26 to move along the inner wall of the positioning groove 241 to adjust the expansion range of the extension block 27 and achieve adaptive support for backpacks of different sizes. S2. When the drive plate 25 rotates, it synchronously drives the airbag 29 to rotate, so that the bottom of the airbag 29 is tightly attached to the bottom of the inner wall of the backpack, achieving uniform support for the bottom of the backpack. At the same time, the airbag 29 can be filled with different volumes of water according to the testing requirements to simulate the bottom force state when the backpack carries different weights of items. During the rotation of S3 and the rotating drum 36, the wave groove 361 on its outer surface cooperates with the roller that is fitted into the end of the power block 34, so that the power block 34 reciprocates linearly along the limiting groove 331 under the guidance of the wave groove 361, simulating various bumpy road conditions from flat road surface to rugged mountain road.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid detection device for the water seepage performance of a backpack, comprising a base (1), wherein a spraying element (11) is slidably disposed in an annular manner on the upper end of the base (1), characterized in that, A support column (13) is fixedly installed on one side of the base (1). The compression assembly (2) is located inside the backpack and is assembled at the lower end of the support column (13). It includes at least one set of lateral extension blocks (27) that reciprocate along the radial direction of the support column (13). Guide rails (271) are fixedly provided on both sides of the extension blocks (27), and extension plates (272) are slidably provided on the guide rails (271) through elastic elements. The extension plates (272) are used to apply adjustable compression force to different parts of the backpack to simulate the shape of the backpack under different load conditions. The active component (3), which is assembled on the upper end of the base (1), includes a vibrating cylinder (38) and at least one set of clamps (39) for locking the backpack shoulder straps. The vibrating cylinder (38) is used to drive the clamps (39) to vibrate in the vertical direction to simulate the bumpy state of the backpack in a dynamic use environment. The clamps (39) are used to lock backpacks of different sizes.

2. The rapid detection device for backpack water seepage performance according to claim 1, characterized in that, The extrusion assembly (2) includes a docking block (21) that engages with the lower end of the support column (13). A fixing cylinder (22) is fixedly provided at the end of the docking block (21). Multiple sets of fixing grooves (221) are evenly provided on the outer surface of the fixing cylinder (22). A fixing rod (222) is slidably provided on the inner wall of the fixing groove (221). Multiple sets of connecting blocks (223) are evenly fixedly provided on the outer surface of the fixing cylinder (22).

3. The rapid detection device for backpack water seepage performance according to claim 2, characterized in that, A pressing plate (23) is slidably provided on the inner wall of the fixed cylinder (22). A pressing rod (231) is fixedly provided at the lower end of the pressing plate (23), and a protective block (232) is snapped onto the outer surface of the pressing rod (231). The outer surface of the protective block (232) is slidably connected to the inner wall of the fixed cylinder (22).

4. The rapid detection device for backpack water seepage performance according to claim 3, characterized in that, The lower end of the fixed rod (222) is fixedly provided with a positioning plate (24), and the end of the positioning plate (24) is evenly provided with multiple sets of positioning grooves (241). A drive plate (25) is rotatably disposed at the middle position of the end of the positioning plate (24). A drive rod (251) corresponding to the positioning groove (241) is rotatably disposed at the end of the drive plate (25). A moving block (26) is rotatably disposed at the end of the drive rod (251). The outer surface of the moving block (26) is slidably connected to the inner wall of the positioning groove (241). At the same time, a moving rod (261) is rotatably disposed at the end of the moving block (26). The end of the moving rod (261) is rotatably connected to the end of the connecting block (223).

5. The rapid detection device for backpack water seepage performance according to claim 4, characterized in that, One side of the movable block (26) is fixedly connected to the end of the extension block (27), and the movable block (26) drives the extension block (27) to reciprocate. The extension plate (272) is rotatably provided with a telescopic rod (28) at one end, and a support plate (281) is rotatably provided at the other end of the telescopic rod (28). A support rod (282) is slidably provided on one side of the support plate (281), and the end of the support rod (282) is engaged with the outer surface of the fixed cylinder (22).

6. The rapid detection device for backpack water seepage performance according to claim 5, characterized in that, An airbag (29) is slidably provided at the lower end of the positioning plate (24), and a connecting tube (291) is fixedly provided at the upper end of the airbag (29). The upper end of the connecting tube (291) is connected to the end of the pressing rod (231).

7. The rapid detection device for backpack water seepage performance according to claim 1, characterized in that, The active component (3) includes a snap-fit ​​block (31) that snaps into the base (1). A power component (32) is fixedly provided at the end of the snap-fit ​​block (31). A limiting plate (33) is fixedly provided at the end of the power component (32). A limiting groove (331) is provided at the end of the limiting plate (33). A power block (34) is slidably provided on the inner wall of the limiting groove (331).

8. The rapid detection device for backpack water seepage performance according to claim 7, characterized in that, The output end of the power component (32) extends through and to the other end of the limiting plate (33). A power rod (35) is fixedly provided at the output end of the power component (32). A rotating cylinder (36) is snapped onto the outer surface of the power rod (35). A wave groove (361) is provided on the outer surface of the rotating cylinder (36).

9. The rapid detection device for backpack water seepage performance according to claim 8, characterized in that, The outer surface of the vibrating cylinder (38) is provided with an annular groove (381), and a protective ring (37) is slidably provided on the inner wall of the annular groove (381). The outer surface of the protective ring (37) is fitted and slidably connected with the outer surface of the snap-fit ​​block (31). The vibrating cylinder (38) has an arc-shaped groove (382) inside that corresponds to the power block (34). The outer surface of one end of the power block (34) is slidably connected to the inner wall of the arc-shaped groove (382), and the outer surface of the other end is slidably connected to the outer surface of the wave groove (361).

10. A rapid method for testing the water permeability of a backpack, characterized in that, Using the detection device as described in any one of claims 1-9, the detection method includes the following steps: S1. When the pressing rod (231) moves, it drives the drive plate (25) that is engaged with it to move. Since the drive plate (25) and the positioning plate (24) are interlocked and rotated, the entire positioning plate (24) moves. Since the end of the moving rod (261) is rotated and connected to the end of the connecting block (223), the moving rod (261) drives the moving block (26) to move along the inner wall of the positioning groove (241) to adjust the expansion range of the extension block (27) and achieve adaptive support for backpacks of different specifications. S2. When the drive plate (25) rotates, the airbag (29) rotates synchronously, so that the bottom of the airbag (29) is tightly attached to the bottom of the inner wall of the backpack, so as to achieve uniform support for the bottom of the backpack. At the same time, the airbag (29) can be filled with different volumes of water according to the testing requirements to simulate the bottom force state when the backpack carries different weights of items. S3. During the rotation of the rotating drum (36), the wave groove (361) on its outer surface cooperates with the roller that is fitted at the end of the power block (34), so that the power block (34) moves back and forth along the limiting groove (331) under the guidance of the wave groove (361), simulating various bumpy road conditions from flat road surface to rugged mountain road.

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