Airtightness inspection device and method for performing airtightness inspection using same

Abstract

The invention relates to an airtightness inspection device and a method for performing airtightness inspection by using the airtightness inspection device, and the airtightness inspection device comprises a plate body which is installed on a housing and is provided with an exhaust hole. The exhaust hole is connected with the first opening of the exhaust pipe, and an exhaust channel is formed in the exhaust pipe and communicated with the exhaust hole. The fixing piece covers a second opening in the other end, opposite to the first opening, of the exhaust pipe. The floating block is arranged in the exhaust channel, and the elastic piece is arranged between the fixing piece and the floating block. When the air tightness is detected, the shell provided with the air tightness detection device is placed in the pressure chamber, and whether the device has the air tightness or not is judged by observing the movement of the floating block.

Description

Technical Field

[0001] The present invention relates to a technology for airtight inspection, and more particularly to an airtight inspection device and a method for performing airtight inspection using the same. Background Art

[0002] With the development of technology, the electronic parts of electronic products are becoming more and more sophisticated. In order to prevent moisture from the air from invading, causing the internal electronic parts of electronic products to get damp and causing electronic product failure, the waterproof specifications of electronic products are gradually improved.

[0003] However, currently, there are no tools to directly observe whether the electronic products themselves have good airtightness. At present, when checking the airtightness of electronic products, complex airtightness testers are required for testing. This undoubtedly increases the complexity and production cost of production testing, and also makes after-sales inspection or after-sales maintenance difficult.

[0004] In view of this, if an airtight inspection device and a method for performing airtight inspection using the same can be designed to make the airtight inspection operation simpler and more efficient, the above-mentioned problems can be effectively improved. Summary of the invention

[0005] The main purpose of the present invention is to provide an airtight inspection device and a method for performing airtight inspection using the same, which has a simple structure and low production cost, and can make the operation of airtight inspection simpler and more efficient.

[0006] To achieve the above-mentioned purpose, the present invention provides an airtight inspection device, which is provided and installed on a shell and includes: a plate body installed on the shell, an exhaust hole is provided on the plate body; an exhaust pipe is arranged on the plate body, an exhaust channel is provided in the exhaust pipe, and the two ends of the exhaust channel respectively have a first opening and a second opening, the first opening is connected to the exhaust hole, so that the exhaust channel is connected to the exhaust hole; a fixing plate covers the second opening; a floating block is arranged in the exhaust channel; an elastic member is arranged in the exhaust channel and is located between the fixing plate and the floating block.

[0007] The invention is characterized in that fixing seats are respectively arranged on the plate body and on both sides of the exhaust pipe, so that the two locking components are respectively passed through fixing sheets and fixed on the two fixing seats, so that the fixing sheets are fixed to cover the second opening.

[0008] The invention is characterized in that the fixing seat and the plate body are formed integrally.

[0009] The invention is characterized in that the exhaust pipe is formed integrally with the plate body.

[0010] The invention is characterized in that the elastic member is a spring.

[0011] The characteristic of the invention is that at least one airtight ring is arranged on the floating block.

[0012] The airtight inspection device further comprises a sealing patch covering the exhaust hole.

[0013] The invention is characterized in that the exhaust channel and the fixing seat are located in the shell.

[0014] The feature of the invention is that at least one vent hole is provided on the exhaust pipe and close to the second opening.

[0015] In addition, the present invention also provides a method for performing an airtight inspection using an airtight inspection device, which is characterized in that it includes the steps of providing a pressure chamber; placing a shell equipped with the airtight inspection device in the pressure chamber; operating the pressure chamber to pressurize, and determining whether the floating block moves, if so, determining that the shell is airtight; if not, determining that the shell is not airtight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a device according to an embodiment of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of a device according to an embodiment of the present invention.

[0018] Figure 3 The present invention is a flowchart of the steps of performing airtight inspection using a device according to an embodiment of the present invention.

[0019] Figure 4 It is a three-dimensional schematic diagram of a housing in a sealed state according to an embodiment of the present invention.

[0020] Figure 5 It is a three-dimensional schematic diagram of a shell in a non-sealed state according to an embodiment of the present invention.

[0021] Figure 6 It is a cross-sectional schematic diagram of a housing in a sealed state according to an embodiment of the present invention.

[0022] Figure 7 It is a cross-sectional schematic diagram of a shell in a non-sealed state according to an embodiment of the present invention.

[0023] Main component symbol description Airtightness inspection device 1

[0024] Board 10

[0025] Exhaust hole 102

[0026] Gear lever 104

[0027] Exhaust pipe 12

[0028] Exhaust channel 120

[0029] First opening 122

[0030] Second opening 124

[0031] Ventilation holes 126

[0032] Fixed plate 14

[0033] Floating block 16

[0034] Airtight ring 160

[0035] Elastic member 18

[0036] Fixed seat 20

[0037] Locking assembly 22

[0038] Shell 2

[0039] First direction D1

[0040] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0041] In order to facilitate ordinary technicians in the field to understand and implement the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0042] Please refer to Figure 1 and Figure 2 The present invention provides an airtightness inspection device 1, which is provided to be installed on a housing 2. In this embodiment, the housing 2 is a shell of an electronic device, which may be an electronic product such as a smart phone or a wireless communication device, and the housing 2 is provided with a circuit board and a processor (omitted and not shown). The airtightness inspection device 1 is installed in the housing 2 to detect the airtightness of the housing 2. If the housing 2 is found to be leaking, it means that the circuit board and the processor in the housing 2 may be immersed in water.

[0043] In this embodiment, the housing 2 is a rectangle formed by a combination of hexahedrons, and one side of the housing 2 is hollowed out to provide a space for installing the airtight inspection device 1. Of course, the way in which the airtight inspection device 1 is installed in the housing 2 is not limited to the above embodiment, and the housing 2 can also maintain six surfaces with side walls, and only one side wall is dug out with a through hole corresponding to the shape of the airtight inspection device 1, and the airtight inspection device 1 is installed in the through hole.

[0044] Next, the structure of the airtight inspection device 1 is described. Please refer to Figure 2The airtight inspection device 1 includes a plate body 10, an exhaust pipe 12, a fixing plate 14, a floating block 16, an elastic member 18 and two fixing seats 20. The exhaust pipe 12 and the fixing seat 20 are both disposed on the plate body 10 and are integrally formed with the plate body 10. The plate body 10, the exhaust pipe 12 and the two fixing seats 20 can be made of the same material, such as plastic or metal.

[0045] In this embodiment, the plate 10 is provided to be mounted on the housing 2, and the plate 10 can be fitted and snapped onto one side of the housing 2, and the plate 10 is extended perpendicular to the first direction D1. The plate 10 is provided with an exhaust hole 102. Figure 4 and Figure 5 In this embodiment, a blocking rod 104 is provided in the exhaust hole 102 so that the exhaust hole 102 can be composed of two semicircular openings to prevent the floating block 16 from being separated from the exhaust hole 102 .

[0046] Please refer to Figure 2 , the exhaust pipe 12 is connected to the exhaust hole 102 and is disposed on the plate body 10, and the exhaust pipe 12 is integrally formed with the plate body 10. Specifically, the exhaust pipe 12 is disposed on the plate body 10 along the first direction D1, and the exhaust pipe 12 is disposed in the housing 2 perpendicular to the plate body 10. The exhaust pipe 12 has an exhaust channel 120, and the two ends of the exhaust channel 120 have a first opening 122 and a second opening 124, respectively. The first opening 122 is connected to the exhaust hole 102, so that the exhaust channel 120 is connected to the exhaust hole 102.

[0047] The fixing plate 14 covers the second opening 124. In the present embodiment, two fixing seats 20 are further provided on the plate body 10, and the two fixing seats 20 are respectively located on both sides of the exhaust pipe 12. The fixing seats 20 are formed integrally with the plate body 10. The fixing seats 20 are arranged on the plate body 10 along the first direction D1, and the two fixing seats 20 can be arranged perpendicular to the plate body 10 and extended parallel to the exhaust pipe 12. After the two locking components 22 are respectively passed through the fixing plates 14, they are respectively fixed on the two fixing seats 20, so that the fixing plates 14 are fixedly covered with the second opening 124. Among them, the locking components 22 can be screws, which are locked in the fixing seats 20. At least one vent hole 126 is further provided on the side wall of the exhaust pipe 12 and near the second opening 124. The vent hole 126 is connected to the space in the shell 2, so that the air pressure starting from the position where the floating block 16 is set in the exhaust pipe 12 is consistent with that in the shell 2.

[0048] The floating block 16 is disposed in the exhaust passage 120. In the present embodiment, the floating block 16 may be made of polyformaldehyde (POM). At least one airtight ring 160 is disposed around the floating block 16. The airtight ring 160 abuts against the side wall of the exhaust passage 120 to prevent the gas outside the housing 2 from entering the housing 2 through the gap between the floating block 16 and the exhaust pipe 12, thereby affecting the airtightness inspection using air pressure. The airtight ring 160 may be made of nitrile rubber (NitrileButadiene Rubber, NBR).

[0049] The elastic member 18 is disposed in the exhaust passage 120 and between the fixing plate 14 and the floating block 16. The elastic member 18 can provide elastic force to move the floating block 16 to the exhaust passage 120. Figure 2 In this embodiment, the elastic member 18 is a spring. In this embodiment, the elastic deformation of the elastic member 18 can be 7000kg / mm ​​(sus304). However, for the sake of aesthetics and to reduce the risk of air leakage, a sealing patch can be covered on the exhaust hole 102.

[0050] After explaining the structure of the airtight inspection device 1, the method of using the airtight inspection device 1 to perform airtight inspection is described below. Figure 2 and Figure 3 The method for performing an airtight inspection using the airtight inspection device 1 comprises the following steps. First, proceed to step S10 to provide a pressure chamber. In this embodiment, the pressure chamber may be composed of a closed box connected to a pressure pump, and the pressure pump may be used to pressurize the interior of the closed box. In another embodiment, the pressure pump may be an air pump.

[0051] Then, the process proceeds to step S12, where the housing 2 with the airtightness inspection device 1 installed is placed in the pressure chamber. Then, the process proceeds to step S14, where the pressure chamber is operated to increase the pressure inside the pressure chamber, thereby providing an environment in the pressure chamber with a pressure greater than the standard pressure. Then, the process proceeds to step S16, where it is determined whether the floating block has moved. If Figure 4 and Figure 5 As shown, the inspector can observe the position of the floating block 16 through the exhaust hole 102. Figure 4 and Figure 6 As shown, it is observed that the floating block 16 moves away from the lever 104, and the process goes to step S18 to determine whether the housing 2 is airtight. Figure 5 and Figure 7 As shown, it is observed that the floating block 16 does not move at all, and the Figure 2 At the same initial position, if the floating block 16 does not move away from the lever 104 or approach the lever 104, the process goes to step S20 to determine that the housing 2 is not airtight.

[0052] In this embodiment, the sealed box can be a transparent box, or a transparent window can be reserved, so that the observer can directly see the movement of the floating block 16. Alternatively, a camera can be installed to shoot at the exhaust hole 102, and projected on a screen for the inspector to observe the movement of the floating block 16, so as to determine whether the housing 2 is airtight.

[0053] Please refer to Figure 6 , to explain in detail the situation in which the floating block 16 is located in the moving position in the above step S18. When the shell 2 is in an airtight state, the shell 2 will not be affected by the pressure of the external pressure chamber. However, at this time, the floating block 16 will be affected by the environment of the pressure chamber outside the shell 2 and move under the force of air pressure. Therefore, it can be judged that the shell 2 is airtight. For example, the elastic member 18 has a tension F. When the elastic member 18 is set in the exhaust channel 120, the elastic member 18 can be compressed due to the weight of the floating block 16, wherein the compression amount of the elastic member 18 makes the tension of the elastic member 18 F=0.36kg. At this time, if the pressure chamber is pressurized, a pressure difference is generated between the pressure in the pressure chamber and the pressure in the shell 2. In this embodiment, the pressure difference is set to 5 standard atmospheres, and the floating block area πR2 is 0.00001965. According to the formula FA=pressure difference X*floating block area πR2, FA=5*104*0.00001965=0.9825kg, it can be known that after the pressure chamber is pressurized, a force of 0.9825kg will be applied to the floating block 16, which makes the elastic force F=0.36kg of the elastic member 18 unable to support, causing the floating block 16 to move to reach a force balance position. At this time, it is determined that the shell 2 is airtight.

[0054] Detailed description of the situation when the housing 2 is not airtight in the above step S20. Figure 7 , at this time, the shell 2 is placed in the sealed box, and the sealed box is pressurized, and the floating block 16 is located at the initial position. When the sealed box is pressurized, air enters the shell 2 through the gap of the shell 2 or the gap between the shell 2 and the plate 10, and enters the exhaust channel 120 through the vent 126. The pressure in the shell 2 will be affected by the pressurization of the pressure chamber, so that the air pressure in the shell 2 is equal to the air pressure of the external pressure chamber, and cross-flow occurs to balance the internal and external air pressures. At this time, the elastic force of the elastic member 18 maintains the initial position of the floating block 16, resulting in the floating block 16 not moving. At this time, it is determined that the shell 2 is not airtight.

[0055] As described above, the airtightness inspection device and the method for airtightness inspection using the same of the present invention have a simple structure and low production cost, and can make the operation of airtightness inspection simpler and more efficient.

[0056] In summary, the present invention meets the requirements of invention patents, and a patent application is filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by people familiar with the art of this case according to the spirit of the present invention should be included in the scope of the following patent application.

Claims

1. An airtightness inspection device, provided to be mounted on a housing, characterized in that: include: A plate body is mounted on the shell, and an exhaust hole is provided on the plate body; an exhaust pipe, disposed on the plate body, wherein the exhaust pipe has an exhaust channel, wherein both ends of the exhaust channel have a first opening and a second opening respectively, wherein the first opening is connected to the exhaust hole, so that the exhaust channel is connected to the exhaust hole; a fixing sheet, covering the second opening; a floating block, disposed in the exhaust passage; as well as An elastic member is arranged in the exhaust passage and located between the fixing plate and the floating block.

2. The airtightness inspection device according to claim 1, characterized in that: The plate body is provided with fixing seats at both sides of the exhaust pipe, so that two locking components are respectively passed through the fixing sheets and fixed on the two fixing seats, so that the fixing sheets are fixed to cover the second opening.

3. The airtightness inspection device according to claim 2, characterized in that: The fixing seat is integrally formed with the plate body.

4. The airtightness inspection device according to claim 1, characterized in that: The exhaust pipe is formed integrally with the plate body.

5. The airtightness inspection device according to claim 1, characterized in that: The elastic member is a spring.

6. The airtightness inspection device according to claim 1, characterized in that: At least one airtight ring is arranged on the floating block.

7. The airtightness inspection device according to claim 1, characterized in that: It also includes a sealing patch covering the exhaust hole.

8. The airtightness inspection device according to claim 1, characterized in that: The exhaust passage and the fixing seat are located in the shell.

9. The airtightness inspection device according to claim 1, characterized in that: At least one vent hole is disposed on the exhaust pipe and close to the second opening.

10. A method for performing airtight inspection using the airtight inspection device according to claim 1, characterized in that: Contains steps: Providing a pressure chamber; placing the housing on which the airtightness inspection device is mounted in the pressure chamber; and operating the pressure chamber to pressurize; and Determine whether the floating block moves: If yes, the housing is judged to be airtight; and If not, it is determined that the housing is not airtight.

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