An air tightness detection device

Abstract

The utility model discloses an air tightness detection device relates to air tightness detection technical field, and this air tightness detection device includes clamping block subassembly, sliding assembly and guiding elastic component, the clamping block subassembly includes the upper clamping block and lower clamping block of opposite setting, the guiding elastic component passes through sliding assembly, and both ends are connected with upper clamping block and lower clamping block respectively, sliding assembly moves in the length range of guiding elastic component relative to clamping block subassembly, sliding assembly is equipped with air passage, and the first opening of air passage is equipped with sealing assembly, and the first opening is located in the bottom of sliding assembly. Through the collaborative design of clamping block subassembly, sliding assembly, guiding elastic component, built -in air passage and sealing assembly, replace traditional immersion test, realize the effect of efficient detection infrastructure.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness testing device. Background Technology

[0002] In the production and testing of vehicle-mounted domain controllers for outdoor engineering vehicles, the traditional waterproof performance test often adopts the immersion test method, which involves placing the device under test in 1 meter of water for more than 2 hours and then checking whether water has entered the interior.

[0003] However, this method has significant drawbacks:

[0004] 1) Extremely low testing efficiency: A single test takes more than 2 hours, which cannot meet the needs of full-scale testing in mass production. Only sampling tests can be performed, which poses a quality risk.

[0005] 2) High testing costs: It requires the construction of a professional underwater testing environment, including waterproof containers, water level control devices, etc., and the testing process consumes a lot of energy.

[0006] 3) High risk of equipment damage: If the waterproof performance of the tested equipment is not up to standard, valuable internal electronic components may be directly damaged by water ingress, increasing production costs.

[0007] To solve the above problems, there is an urgent need for an efficient, low-cost, and low-risk waterproof performance testing solution. Utility Model Content

[0008] The technical problem to be solved by this utility model embodiment is that the traditional waterproof performance test adopts the immersion test method, which takes a long time for a single test and has a high risk of equipment damage.

[0009] To address the aforementioned problems, this utility model discloses an airtightness testing device. Through the coordinated design of a clamping block assembly, a sliding assembly, a guiding elastic assembly, a built-in air passage, and a sealing assembly, it replaces the traditional immersion test, achieving efficient testing of the infrastructure.

[0010] This utility model provides an airtightness testing device, which includes a clamping block assembly, a sliding assembly, and a guiding elastic assembly. The clamping block assembly includes an upper clamping block and a lower clamping block arranged opposite to each other. The guiding elastic assembly passes through the sliding assembly and its two ends are respectively connected to the upper clamping block and the lower clamping block. The sliding assembly moves relative to the clamping block assembly within the length range of the guiding elastic assembly. The sliding assembly is provided with an air passage, and a sealing assembly is provided at the first opening of the air passage. The first opening is located at the bottom of the sliding assembly.

[0011] A further technical solution is that the guide elastic component includes a rod and a spring, the spring is sleeved on the rod, the rod is connected to the sliding component, the upper clamping block and the lower clamping block respectively, and the spring is connected to the upper clamping block and the sliding component respectively.

[0012] A further technical solution is that the sliding assembly includes a slider and a bearing, the air passage is disposed on the slider, and the bearing is connected to the guide elastic assembly and the slider respectively.

[0013] A further technical solution includes a limiting component, which comprises at least two limiting members, all of which are detachably connected to the lower clamping block.

[0014] A further technical solution is that the limiting components are a first limiting baffle and a second limiting baffle, and the first limiting baffle and the second limiting baffle are respectively fixedly connected to the lower clamping block by bolts.

[0015] A further technical solution is that the lower clamping block has a first elongated hole extending in a first direction at the position corresponding to the first limiting baffle, and the bolt for fixing the first limiting baffle passes through the first elongated hole and is threadedly connected to the lower clamping block; the lower clamping block has a second elongated hole extending in a second direction at the position corresponding to the second limiting baffle, and the bolt for fixing the second limiting baffle passes through the second elongated hole and is threadedly connected to the lower clamping block; the first direction is perpendicular to the second direction.

[0016] A further technical solution is that the sealing component is an elastic airtight ring, which surrounds the first opening.

[0017] A further technical solution includes a pneumatic control component, which is connected to the second opening of the airway via an air pipe, and the air pipe is equipped with an air valve.

[0018] A further technical solution is that the air pressure control component includes an air pressure monitor and a blower motor, and the air pressure monitor and the blower motor are respectively connected to the second opening through the air pipe.

[0019] A further technical solution is that the bottom surface of the slider has a notch.

[0020] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0021] The material and size matching of the upper and lower clamping blocks ensure the stability of the overall structure; the aluminum alloy slider is lightweight yet strong enough to meet the requirements, making it easy to move; the spring steel guide rail has good elasticity and guiding properties, allowing the slider to move smoothly within its stroke range; the built-in air passage and sealing components work together to provide a basic gas channel and sealing guarantee for airtightness testing, enabling preliminary testing of the equipment's airtightness.

[0022] The clamping block assembly (upper and lower clamping blocks) provides a stable support frame. The cooperation between the guide elastic component and the sliding component allows the sliding component to move flexibly within its stroke range. Compared with the fixed static mode of traditional immersion testing, this provides a structural foundation for quickly clamping and releasing the device under test, significantly shortening the test preparation time for a single device.

[0023] The elastic design of the guide elastic component ensures sufficient pressure to clamp the device under test during testing, facilitating the replacement of the device under test and improving testing efficiency.

[0024] The built-in air passage of the sliding component provides a dedicated path for gas flow. Together with the sealing component at the opening, it forms a closed gas loop from the gas source to the device under test, avoiding interference from gas leakage on the test results. It solves the problem of lag in traditional testing, which requires "observing water ingress after immersion in water", and can reflect the sealing status of the device in real time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an airtightness testing device provided in an embodiment of this utility model;

[0027] Figure 2 A schematic diagram of another airtightness testing device provided in this embodiment of the present invention;

[0028] Figure 3 An exploded view of the structure of an airtightness testing device provided in an embodiment of this utility model;

[0029] Figure 4 Exploded view of another airtightness testing device provided in this embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a slider structure provided for an embodiment of this utility model;

[0031] Figure 6This is a schematic diagram of another slider structure provided in an embodiment of the present utility model;

[0032] Figure 7 A schematic diagram of a lower clamping block structure provided for an embodiment of this utility model;

[0033] Figure 8 A reference diagram showing the usage status of an airtightness testing device provided for an embodiment of this utility model;

[0034] Figure 9 Another airtightness testing device is shown in a reference diagram in use, which is provided for an embodiment of this utility model.

[0035] Figure 10 This is a structural block diagram of an airtightness testing device provided in an embodiment of the present utility model.

[0036] Figure Labels

[0037] 1. Clamping block assembly; 2. Sliding assembly; 3. Guide elastic assembly; 11. Upper clamping block; 12. Lower clamping block; 21. Air passage; 22. First opening; 23. Second opening; 6. Sealing assembly;

[0038] 31. Rod; 32. Spring; 24. Slider; 25. Bearing; 4. Limiting assembly; 41. First limiting baffle; 42. Second limiting baffle; 121. First elongated hole; 122. Second elongated hole; 5. Air pressure control assembly; 51. Air pressure monitor; 52. Blower motor; 241. Notch; 53. Air pipe; 54. Air valve. Detailed Implementation

[0039] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all 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.

[0040] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0041] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0042] See Figures 1-10 This utility model provides an airtightness testing device. The airtightness testing device includes a clamping block assembly 1, a sliding assembly 2, and a guiding elastic assembly 3. The clamping block assembly 1 includes an upper clamping block 11 and a lower clamping block 12 disposed opposite to each other. The guiding elastic assembly 3 passes through the sliding assembly 2, and its two ends are respectively connected to the upper clamping block 11 and the lower clamping block 12. The sliding assembly 2 moves relative to the clamping block assembly 1 within the length range of the guiding elastic assembly 3. The sliding assembly 2 is provided with an air passage 21, and a sealing assembly 6 is provided at the first opening 22 of the air passage 21, the first opening 22 being located at the bottom of the sliding assembly 2. Specific descriptions of each component are as follows:

[0043] In this embodiment, both the upper clamping block 11 and the lower clamping block 12 are made of steel. The upper clamping block 11 is rectangular. The sliding component 2 is made of aluminum alloy. The guide elastic component 3 is a cylindrical spring 32 steel guide rail. The air passage 21 penetrates from the side of the sliding component 2 to the bottom surface of the sliding component 2. The opening at the bottom of the sliding component 2 is called the first opening 22.

[0044] The technical effects achievable by this airtightness testing device are as follows:

[0045] The material and size matching of the upper clamping block 11 and the lower clamping block 12 ensure the stability of the overall structure; the aluminum alloy slider 24 is lightweight and has sufficient strength to meet the requirements, making it easy to move; the spring 32 steel guide rail has good elasticity and guiding properties, allowing the slider 24 to move smoothly within its stroke range; the built-in air passage 21, in conjunction with the sealing component 6, provides a basic gas channel and sealing guarantee for airtightness testing, enabling preliminary testing of the equipment's airtightness.

[0046] The clamping block assembly 1 (upper clamping block 11 and lower clamping block 12) provides a stable support frame. The cooperation between the guide elastic component 3 and the sliding component 2 allows the sliding component 2 to move flexibly within its stroke range. Compared with the fixed static mode of traditional immersion testing, this lays a structural foundation for quickly clamping and releasing the device under test, and significantly shortens the test preparation time for a single device.

[0047] The elastic design of the guide elastic component 3 ensures sufficient pressure to press the device under test during testing, facilitating the replacement of the device under test and improving testing efficiency.

[0048] The built-in air passage 21 of the sliding component 2 provides a dedicated path for gas flow. Together with the sealing component 6 at the opening, it forms a closed gas circuit from the gas source to the device under test, avoiding interference from gas leakage on the test results. It solves the problem of lag in traditional testing by "observing water ingress after immersion in water" and can reflect the sealing status of the device in real time.

[0049] There is no need to construct an underwater environment; the waterproof performance can be determined simply by changes in gas pressure, avoiding the risk of damage to the equipment due to water ingress. At the same time, the device has a simple structure, and the core components (clamps, sliders 24, guide rails, etc.) are all conventional mechanical parts, making the manufacturing cost far lower than that of professional underwater testing equipment.

[0050] See also Figures 1-10 In this embodiment, the guide elastic component 3 includes a rod 31 and a spring 32. The spring 32 is sleeved on the rod 31. The rod 31 is connected to the sliding component 2, the upper clamping block 11 and the lower clamping block 12 respectively. The spring 32 is connected to the upper clamping block 11 and the sliding component 2 respectively.

[0051] Specifically, the spring 32 is a cylindrical helical spring 32. One end of the spring 32 abuts against the upper surface of the sliding component 2, and the other end abuts against the lower surface of the upper clamping block 11. The spring 32 has good elasticity and high strength, and can provide stable elastic force. Its abutting force on the sliding component 2 allows the sliding component 2 to fit tightly against the device under test, ensuring the clamping effect. At the same time, when changing the device under test, the elastic force of the spring 32 facilitates the reset of the slider 24, improving the convenience of operation.

[0052] Furthermore, the sliding assembly 2 includes a slider 24 and a bearing 25, the air passage 21 is disposed on the slider 24, and the bearing 25 is connected to the guide elastic assembly 3 and the slider 24 respectively.

[0053] Specifically, the slider 24 is slidably connected to the guide elastic component 3 via the bearing 25, so that the slider 24 can move up and down within the length range of the guide elastic component 3.

[0054] Furthermore, it also includes a limiting component 4, which includes at least two limiting members, all of which are detachably connected to the lower clamping block 12.

[0055] Furthermore, the limiting components are a first limiting baffle 41 and a second limiting baffle 42, which are respectively fixedly connected to the lower clamping block 12 by bolts.

[0056] Furthermore, the lower clamping block 12 is provided with a first elongated hole 121 extending in a first direction at the position corresponding to the first limiting baffle 41, and the bolt for fixing the first limiting baffle 41 passes through the first elongated hole 121 and is threadedly connected to the lower clamping block 12; the lower clamping block 12 is provided with a second elongated hole 122 extending in a second direction at the position corresponding to the second limiting baffle 42, and the bolt for fixing the second limiting baffle 42 passes through the second elongated hole 122 and is threadedly connected to the lower clamping block 12; the first direction is perpendicular to the second direction.

[0057] Specifically, the first elongated hole 121 extends along a first direction (lateral), and the second elongated hole 122 extends along a second direction (longitudinal). The bolts fixing the limiting baffle are M10 bolts with washers. The elongated hole design provides space for adjusting the position of the limiting baffle. By loosening the bolts, the first limiting baffle 41 can be moved within the range of the first elongated hole 121, and the second limiting baffle 42 can be moved within the range of the second elongated hole 122, meeting the positioning requirements of devices under test of different sizes. The bolts with washers enhance the stability of the connection and prevent the limiting baffle from shaking after adjustment.

[0058] The first limiting baffle 41 and the second limiting baffle 42 ensure that the device under test is placed in the correct position. In this embodiment,

[0059] Furthermore, the sealing component 6 is an elastic airtight ring, which surrounds the first opening 22.

[0060] Specifically, the elastic airtight ring is made of fluororubber, is ring-shaped, and is fixed to the first opening 22 of the gas passage 21 by adhesive. Fluororubber has excellent resistance to high and low temperatures and corrosion resistance, adapting to changes in the testing environment; its elastic properties ensure tight contact with the tested equipment, effectively preventing gas leakage from the contact gap and improving the sealing performance and accuracy of the airtightness test.

[0061] Furthermore, it also includes a pneumatic control component 5, which is connected to the second opening 23 of the airway 21 via an air pipe 53, and the air pipe 53 is provided with an air valve 54.

[0062] Specifically, the air tube 53 is made of PU material. PU air tube 53 has good flexibility, is resistant to aging, and is easy to arrange and connect. The air valve 54 is a solenoid valve. The solenoid valve has a fast response speed and can quickly control the opening and closing of the air tube 53, realizing convenient control of the gas in the airway 21, providing a basis for automated detection and improving the efficiency of detection.

[0063] Furthermore, the air pressure control component 5 includes an air pressure monitor 51 and a blower motor 52, wherein the air pressure monitor 51 and the blower motor 52 are respectively connected to the second opening 23 through the air pipe 53.

[0064] Specifically, the air pressure monitor 51 is a digital pressure gauge with a measurement range of 0-50Pa and an accuracy of ±0.1Pa. It is connected to the airway 21 through the air pipe 53. The blower motor 52 is a small centrifugal fan with a power of 50W. Its air outlet is connected to the airway 21 through the air pipe 53. The air valve 54 on the air pipe 53 is a manual ball valve.

[0065] In this embodiment, the test port of the device under test is aligned with the first opening 22, the air valve 54 is opened, and the air pressure monitor 51 automatically shuts off the blower motor 52 when the air pressure reaches 12Pa. If the air pressure can be maintained above 10Pa for 5 seconds, the test is considered passed.

[0066] The mobility of the sliding component 2 and the simplicity of its overall structure make the equipment easy to load and unload. Combined with the automated control components, it can achieve rapid testing throughout the entire process, meet the efficiency requirements of full-volume testing in mass production, and fill the quality monitoring blind spot of traditional sampling tests.

[0067] Furthermore, the bottom surface of the slider 24 is provided with a notch 241.

[0068] Specifically, when the slider 24 moves to the bottom end of the guide elastic component 3, the bottom surface of the slider 24 forms a space for fingers to insert through the notch 241, preventing injury to the operator's fingers when the slider 24 moves to the bottom end and improving safety. In one embodiment, the bottom surface of the slider 24 forms a two-stage stepped structure through the notch 241. The stepped structure facilitates finger insertion, and lifting the slider 24 towards the upper clamping block 11 facilitates the pinching operation, shortens the time for changing the device under test, and improves testing efficiency.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0076] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An airtightness testing device, characterized in that, It includes a clamping block assembly, a sliding assembly, and a guiding elastic assembly; the clamping block assembly includes an upper clamping block and a lower clamping block disposed opposite to each other; the guiding elastic assembly passes through the sliding assembly and its two ends are respectively connected to the upper clamping block and the lower clamping block; The sliding component moves relative to the clamping block component within the length range of the guide elastic component; The sliding assembly is provided with an air passage, and a sealing assembly is provided at the first opening of the air passage. The first opening is located at the bottom of the sliding assembly.

2. The airtightness testing device according to claim 1, characterized in that, The guide elastic component includes a rod and a spring. The spring is sleeved on the rod. The rod is connected to the sliding component, the upper clamping block, and the lower clamping block, respectively. The spring is connected to the upper clamping block and the sliding component, respectively.

3. The airtightness testing device according to claim 1, characterized in that, The sliding assembly includes a slider and a bearing. The air passage is disposed on the slider, and the bearing is connected to the guide elastic assembly and the slider respectively.

4. The airtightness testing device according to claim 1, characterized in that, It also includes a limiting component, which includes at least two limiting members, all of which are detachably connected to the lower clamping block.

5. The airtightness testing device according to claim 4, characterized in that, The limiting components are a first limiting baffle and a second limiting baffle, which are respectively fixedly connected to the lower clamping block by bolts.

6. The airtightness testing device according to claim 5, characterized in that, The lower clamping block has a first elongated hole extending in a first direction at the position corresponding to the first limiting baffle. The bolt for fixing the first limiting baffle passes through the first elongated hole and is threadedly connected to the lower clamping block. The lower clamping block has a second elongated hole extending in a second direction at the position corresponding to the second limiting baffle. The bolt for fixing the second limiting baffle passes through the second elongated hole and is threadedly connected to the lower clamping block. The first direction is perpendicular to the second direction.

7. The airtightness testing device according to claim 1, characterized in that, The sealing component is an elastic airtight ring, which surrounds the first opening.

8. The airtightness testing device according to claim 1, characterized in that, It also includes a pneumatic control component, which is connected to the second opening of the airway via an air pipe, and the air pipe is equipped with an air valve.

9. The airtightness testing device according to claim 8, characterized in that, The air pressure control component includes an air pressure monitor and a blower motor, and the air pressure monitor and the blower motor are respectively connected to the second opening through the air pipe.

10. The airtightness testing device according to claim 3, characterized in that, The bottom surface of the slider has a notch.

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