Airtightness detection device for lower box body

Abstract

The utility model discloses an air tightness detection device for a lower box body. The air tightness detection device comprises a detection platform, a silica gel pad, a limiting device, a sealing device and a telescopic device, the telescopic device is arranged beside the detection platform and comprises a first telescopic rod and a second telescopic rod which are horizontally arranged, and the second telescopic rod is vertically connected with the first telescopic rod; the sealing device is fixed at the tail end of the second telescopic rod; and the limiting device is detachably mounted on the detection platform and is used for fixing the lower box body on the detection platform. Through the multi-direction telescopic structure, the linear bearing structure, the limiting column structure, the silica gel foam structure, the multi-group design structure and the like, the detection adaptability, precision, stability and safety of the detection device are remarkably improved, meanwhile, the operation process is simplified, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to an airtightness testing device for a lower housing. Background Technology

[0002] In industrial production, the airtightness testing of the lower casing is a critical quality control step. Airtightness not only relates to the product's safety performance but also directly affects its service life and reliability.

[0003] Existing lower chamber airtightness testing technology primarily relies on the combined use of a hydraulic mechanism and silicone foam. The hydraulic mechanism applies downward pressure to ensure tight contact between the lower chamber and the silicone foam, creating a sealed testing environment. Vent holes on the silicone foam connect to the air supply system's vent pipes, allowing gas to smoothly enter the lower chamber for airtightness testing. Furthermore, to ensure testing accuracy, the holes on the sides of the lower chamber need to be sealed with transparent tape to prevent gas leakage.

[0004] While existing airtightness testing methods can meet testing requirements to some extent, they still have some shortcomings. The hydraulic mechanism, while applying pressure to the bottom of the lower housing, also causes an outward expansion force on the sides of the lower housing, which may affect the flatness of the mounting surfaces of the lower housing's mounting points and the housing cover. Deformation of the lower housing may create gaps between it and the testing platform, leading to air leakage during testing and consequently affecting the accuracy of the test results. Utility Model Content

[0005] This invention proposes an airtightness testing device for the lower casing, which solves the problem that existing airtightness testing devices may cause inaccurate test results due to casing deformation.

[0006] To solve the above-mentioned technical problems, this utility model provides an airtightness testing device for the lower housing, including: a testing platform, a silicone pad, a limiting device, a sealing device, and a telescopic device;

[0007] The telescopic device is located on the side of the detection platform and includes a first telescopic rod and a second telescopic rod arranged horizontally, with the second telescopic rod being perpendicularly connected to the first telescopic rod.

[0008] The sealing device is fixed to the end of the second telescopic rod;

[0009] The limiting device is detachably installed on the detection platform and is used to fix the lower box body on the detection platform.

[0010] Preferably, at least two telescopic devices are provided, and the first telescopic rods of the two telescopic devices are arranged vertically.

[0011] Preferably, the second telescopic rod and the sealing device are detachably connected.

[0012] Preferably, the telescopic device further includes a connecting rod, which is arranged vertically, with one end detachably connected to the first telescopic rod perpendicularly and the other end detachably connected to the second telescopic rod perpendicularly.

[0013] Preferably, the connecting rod is a telescopic rod.

[0014] Preferably, a linear bearing is provided between the first telescopic rod and the connecting rod, and between the second telescopic rod and the connecting rod.

[0015] Preferably, multiple limiting devices are provided, and the multiple limiting devices are arranged at intervals.

[0016] Preferably, the limiting device is a limiting post that mates with the mounting hole of the lower housing mounting point bracket.

[0017] Preferably, the sealing device is plate-shaped, and silicone foam is provided on the side of the sealing device away from the second telescopic rod.

[0018] Preferably, the silicone pad and the detection platform are detachably connected.

[0019] The advantages of this utility model include at least the following:

[0020] The telescopic device can automatically adjust according to the size of the lower chamber, making it suitable for lower chambers of different sizes and improving the versatility and flexibility of the device. By integrating the telescopic device, the device can automatically adjust the distance between the testing platform and the lower chamber, ensuring the sealing between the lower chamber and the testing platform, thereby improving the accuracy of airtightness testing. Attached Figure Description

[0021] Figure 1 This is a top view of the device according to an embodiment of the present utility model.

[0022] In the diagram: 1-Detection platform; 2-Silicone pad; 3-Limiting device; 4-Sealing device; 5-Telescopic device; 51-First telescopic rod; 52-Second telescopic rod; 53-Connecting rod; 6-Lower box; 7-Silicone foam. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1 As shown, this utility model embodiment provides an airtightness testing device for a lower housing, including: a testing platform 1, a silicone pad 2, a limiting device 3, a sealing device 4, and a telescopic device 5. The telescopic device 5 is disposed beside the testing platform 1 and includes a first telescopic rod 51 and a second telescopic rod 52 arranged horizontally, with the second telescopic rod 52 perpendicularly connected to the first telescopic rod 51. The sealing device 4 is fixed to the end of the second telescopic rod 52. The limiting device 3 is detachably installed on the testing platform 1 and is used to fix the lower housing 6 to the testing platform 1.

[0025] Specifically, when the airtightness testing device is in operation, the lower housing 6 is first placed upside down on the silicone pad 2 on the testing platform 1. The limiting device 3 is then connected to the side of the lower housing 6. The limiting device 3 applies appropriate clamping or supporting force to the side of the lower housing 6 to prevent lateral deformation of the lower housing 6 due to the pressure of the hydraulic mechanism during the testing process. The limiting device 3 also fixes the position of the lower housing 6 to ensure that it will not shift or shake during the testing process.

[0026] Move the first telescopic rod 51 horizontally to move the second telescopic rod 52 and the sealing device 4 to a suitable position. The second telescopic rod 52 is vertically connected to the first telescopic rod 51. Further adjust the height or angle of the sealing device 4 so that it can tightly fit the electrical components and the holes of the explosion-proof valve on the side of the lower housing 6.

[0027] After the sealing device 4 seals the side holes of the lower housing 6, the hydraulic mechanism starts working, pressing down on the bottom of the lower housing 6 and applying a certain force downwards. This force ensures that the mounting surface of the housing cover on the lower housing 6 fits tightly against the silicone pad 2, guaranteeing the airtightness of the testing area. During this process, the limiting device 3 counteracts the outward expansion force of the lower housing 6 caused by the hydraulic pressure, ensuring that the side deformation of the lower housing 6 is controlled within the allowable range. The silicone pad 2 has vent holes, and the air supply system's duct on the side of the testing platform 1 is connected to these vent holes. The air supply system inflates the lower housing 6 through the vent holes until the set inflation pressure is reached.

[0028] After inflation is complete, stop the air supply and monitor the air pressure change inside the lower chamber 6. If the error between the air pressure inside the lower chamber 6 and the inflation pressure is within the set leakage range, the lower chamber 6 is considered to have good airtightness. If the air pressure change exceeds the set leakage range, it indicates that there is a leakage problem in the lower chamber 6, which requires further inspection and repair.

[0029] After the inspection is completed, the hydraulic mechanism releases the pressure on the bottom of the lower housing 6. The telescopic device 5 retracts, and the sealing device 4 disengages from the hole on the side of the lower housing 6. The limiting device 3 releases its fixation on the lower housing 6, and the lower housing 6 is removed.

[0030] By integrating the telescopic device 5, this airtightness testing device can automatically adjust the position of the sealing device according to the size of the lower housing 6 and the position of the holes for installing electrical components and explosion-proof valves on the side of the lower housing 6, thereby improving the versatility and flexibility of the testing device.

[0031] In one feasible embodiment, the detection platform 1 of the airtightness detection device has a rectangular mounting plane. By arranging the first telescopic rod 51 and the second telescopic rod 52 along the width and length directions of the mounting plane, the detection device can adapt to lower boxes 6 of different sizes and shapes.

[0032] At least two telescopic devices 5 are provided, and the first telescopic rod 51 of the two telescopic devices 5 is arranged vertically.

[0033] Specifically, multiple sets of telescopic devices can better adapt to lower housings 6 of different sizes and shapes, providing a wider range of applications. The vertically arranged telescopic devices 5 can fully adapt to lower housings 6 of different sizes, ensuring the versatility and flexibility of the device.

[0034] The second telescopic rod 52 and the sealing device 4 are detachably connected.

[0035] Specifically, different testing conditions may require different sealing methods or materials. The detachable connection makes the sealing device 4 easy to disassemble, allowing for quick replacement of different types of sealing devices 4 according to different testing needs. At the same time, the size of the holes for mounting electrical components and explosion-proof valves on the side of the lower housing 6 can be easily replaced with sealing devices 4 of different sizes, improving the flexibility and adaptability of the device and making it easier to maintain, replace or upgrade, reducing maintenance time and costs.

[0036] The telescopic device 5 also includes a connecting rod 53, which is arranged vertically, with one end detachably connected to the first telescopic rod 51 and the other end detachably connected to the second telescopic rod 52.

[0037] Specifically, based on the relative positions of the sealing device 4 and the holes on the side of the lower housing 6 where electrical components and explosion-proof valves are installed, the connecting rod 53 can be positioned above or below the second telescopic rod 52. By adjusting the length and position of the connecting rod 53, the vertical positions of the second telescopic rod 52 and the sealing device 4 can be changed. In this way, the height of the sealing device 4 can be precisely controlled to adapt to the positions of the holes on the side of the lower housing 6 where electrical components and explosion-proof valves are installed, or to lower housings 6 of different heights. The addition of the connecting rod 53 allows the telescopic device 5 to be adjusted not only horizontally but also vertically. By replacing the connecting rod 53 with different lengths, the vertical adjustment range of the telescopic device 5 can be quickly adjusted, improving the versatility and adaptability of the device. At the same time, the fine-tuning function of the connecting rod 53 allows the position of the sealing device 4 to be adjusted more precisely, ensuring a tight fit between the sealing device 4 and the holes on the side of the lower housing 6, thus improving the sealing effect.

[0038] Link 53 is a telescopic rod.

[0039] Specifically, the lengths of the first telescopic rod 51 and the second telescopic rod 52 can be adjusted according to the position of the holes for installing electrical components and explosion-proof valves on the side of the lower housing 6, thereby precisely controlling the position of the sealing device 4 and further enhancing the adaptability of the device.

[0040] Linear bearings are provided between the first telescopic rod 51 and the connecting rod 53, and between the second telescopic rod 52 and the connecting rod 53.

[0041] Specifically, linear bearings can significantly reduce friction between the telescopic rod and the connecting rod, making the telescopic action smoother and helping to improve the accuracy of the telescopic rod's movement, thereby ensuring the correct positioning of the sealing device 4.

[0042] Multiple limit devices 3 are provided, and the multiple limit devices 3 are arranged at intervals.

[0043] Specifically, multiple limiting devices 3 are arranged at intervals, which can apply limiting force evenly from multiple directions to ensure that the lower housing 6 will not shift or deform during the testing process. This uniform support force helps maintain the flatness of the lower housing 6 and prevents air leakage caused by deformation.

[0044] In one feasible embodiment, for the rectangular lower housing 6, two sets of limiting devices 3 are symmetrically arranged along the length of the rectangular lower housing 6, and one set is symmetrically arranged along the width, ensuring that limiting force is applied evenly from both sides of the lower housing 6. By applying limiting force evenly to both sides of the lower housing 6 through multiple limiting devices 3, it is ensured that the lower housing 6 will not shift or deform during the testing process. The symmetrically arranged limiting devices 3 can provide uniform support on opposite sides of the lower housing 6, avoiding housing deformation caused by uneven force.

[0045] The limiting device 3 is a limiting post that mates with the mounting hole of the bracket at the mounting point of the lower housing 6.

[0046] Specifically, the limiting posts are configured in pairs, directly engaging with the mounting holes of the lower housing 6 to achieve precise positioning and ensure the correct position of the lower housing 6 on the testing platform 1. The engagement of the limiting posts with the mounting holes provides stable support, preventing displacement or rotation of the lower housing 6 during the testing process.

[0047] The sealing device 4 is plate-shaped, and a silicone foam 7 is provided on the side of the sealing device 4 away from the second telescopic rod 52.

[0048] Specifically, the silicone foam 7 has good elasticity and flexibility, which can provide a tighter seal. The good sealing performance helps to improve the accuracy of airtightness testing and ensure the reliability of test results.

[0049] The silicone pad 2 and the detection platform 1 are detachably connected.

[0050] Specifically, lower housings 6 of different sizes may require silicone gaskets 2 of different thicknesses or shapes to ensure good sealing. By replacing silicone gaskets 2 of different sizes or shapes, various sizes and shapes of lower housings 6 can be accommodated, ensuring a good seal between the lower housing 6 and the testing platform, thereby improving testing accuracy. The detachable design allows the device to be quickly adjusted to meet different testing requirements. When silicone gaskets 2 wear or are damaged due to long-term use, new silicone gaskets 2 can be quickly replaced without replacing the entire testing platform, reducing maintenance costs.

[0051] This utility model provides an airtightness testing device for the lower housing. Through multi-directional telescopic, linear bearing, limiting column, silicone foam and multiple design structures, it significantly improves the adaptability, accuracy, stability and safety of the test, while simplifying the operation process and improving production efficiency and product quality.

[0052] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. Only preferred embodiments of the present invention are shown, and the descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. As long as the combination of these technical features does not contradict each other, it should be considered as within the scope of this specification.

[0053] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An airtightness detection device for a lower housing, characterized in that, include: The testing platform (1), silicone pad (2), limiting device (3), sealing device (4), and telescopic device (5) are included. The telescopic device (5) is located on the side of the detection platform (1) and includes a first telescopic rod (51) and a second telescopic rod (52) arranged horizontally, with the second telescopic rod (52) being vertically connected to the first telescopic rod (51). The sealing device (4) is fixed to the end of the second telescopic rod (52); The limiting device (3) is detachably installed on the detection platform (1) and is used to fix the lower box (6) on the detection platform (1).

2. The airtightness detection device for a lower housing according to claim 1, characterized in that: The telescopic device (5) is provided in at least two, and the first telescopic rod (51) of the two telescopic devices (5) is arranged vertically.

3. The airtightness detection device for a lower housing according to claim 2, characterized in that: The second telescopic rod (52) and the sealing device (4) are detachably connected.

4. The airtightness detection device for a lower housing according to claim 1, characterized in that: The telescopic device (5) further includes a connecting rod (53), which is arranged in a vertical direction. One end is detachably connected to the first telescopic rod (51) vertically, and the other end is detachably connected to the second telescopic rod (52) vertically.

5. The airtightness detection device for a lower housing according to claim 4, characterized in that: The connecting rod (53) is a telescopic rod.

6. The airtightness detection device for a lower housing according to claim 4, characterized in that: Linear bearings are provided between the first telescopic rod (51) and the connecting rod (53), and between the second telescopic rod (52) and the connecting rod (53).

7. The airtightness detection device for a lower housing according to claim 1, characterized in that: Multiple limiting devices (3) are provided, and the multiple limiting devices (3) are arranged at intervals.

8. The airtightness detection device for a lower housing according to claim 1, characterized in that: The limiting device (3) is a limiting post that cooperates with the mounting hole of the mounting point bracket of the lower box (6).

9. The airtightness detection device for a lower housing according to claim 1, characterized in that: The sealing device (4) is plate-shaped, and silicone foam (7) is provided on the side of the sealing device (4) away from the second telescopic rod (52).

10. The airtightness detection device for a lower housing according to claim 1, characterized in that: The silicone pad (2) and the detection platform (1) are detachably connected.

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