Detection device
By designing a testing device that includes a positioning fixture, a leak meter, a positive pressure output pipeline, and a negative pressure output pipeline, the problems of low testing efficiency and high cost in the existing technology are solved, and efficient airtightness testing of electronic equipment components is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHENG FUTAIHUA PRECISION ELECTRONICS CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-24
AI Technical Summary
In the existing technology, the airtightness testing of electronic equipment components requires two independent devices, resulting in low testing efficiency and high cost, and making it impossible to complete positive and negative pressure testing at one time.
Design a testing device comprising a positioning fixture, a leak meter, a positive pressure output pipeline, and a negative pressure output pipeline. The device enables positive and negative pressure testing of different parts of a product through a single clamping operation. The device seals both sides of the product using a sealing assembly and a cover pressure assembly, and combines the leak meter to test airtightness.
It improves testing efficiency, reduces costs, and enables the one-time completion of airtightness testing for different parts of electronic equipment components.
Smart Images
Figure CN224552638U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing equipment technology, specifically to a testing device. Background Technology
[0002] Currently, electronic devices such as mobile phones and tablets typically need to meet certain waterproof requirements, such as an IP68 rating. Therefore, it is necessary to conduct airtightness testing on the components of these electronic devices to ensure that they meet the corresponding waterproof requirements.
[0003] Currently, when performing airtightness testing on electronic device components, the structural limitations of these components necessitate either positive pressure testing or negative pressure testing for different parts. For example, communication modules require positive pressure blowing, while the mid-frame, due to its sealing structure, requires negative pressure suction with an internal cavity seal. Therefore, two independent testing devices are typically designed for each method, and the product is moved and clamped onto these devices separately when testing different parts. However, this method results in low efficiency due to the need for multiple movements and disassembly / reassembly of the product; furthermore, the requirement for two independent testing devices increases costs. Utility Model Content
[0004] In view of the above, it is necessary to propose a testing device to improve the efficiency of product testing and reduce costs.
[0005] This application provides a testing device, comprising: a positioning fixture including a support component, a cover component, and a sealing component; the cover component is detachably mounted on the support component, and the support component and the cover component are respectively used to seal a first side and a second side of a product that are positioned opposite each other; the sealing component includes a movable component and a sealing component; the movable component is located on one side of the support component and is movable relative to the support component; the movable component has a positive pressure channel; the sealing component is located on the movable component and communicates with the positive pressure channel; the sealing component is used to seal the part of the product that needs to be tested under positive pressure; a leak meter located on one side of the positioning fixture; a positive pressure output pipeline, one end of which is connected to the leak meter and the other end of which is connected to the positive pressure channel, for introducing positive pressure gas into the positive pressure channel so that the leak meter can detect the part of the product that needs to be tested under positive pressure; and a negative pressure output pipeline, one end of which is connected to the leak meter and the other end of which is connected to the support component or the cover component, for drawing negative pressure from inside the product so that the leak meter can detect the part of the product that needs to be tested under negative pressure.
[0006] In some embodiments, the sealing assembly further includes: a movable drive member disposed on one side of the support assembly and connected to the movable member, for driving the movable member to move closer to or away from the support assembly; and a first sealing member disposed on the movable member for sealing the first connection hole opened on the product.
[0007] In some embodiments, the support assembly includes: a support base; a plurality of limiting members spaced apart on one side of the support base facing the cover assembly, the plurality of limiting members enclosing a limiting space for receiving the product; and a first closing member disposed on the support base and located within the limiting space for closing the first side of the product.
[0008] In some embodiments, the cover assembly includes: a cover seat, which covers the support assembly; a second closure member, which is disposed on the side of the cover seat facing the support assembly, for closing the second side of the product; and a locking member, which is disposed on the cover seat, for locking the cover seat and the support assembly.
[0009] In some embodiments, one of the support component and the cover component is provided with a positioning hole, and the other of the support component and the cover component is provided with a positioning protrusion that engages with the positioning hole.
[0010] In some embodiments, the positioning fixture further includes a blocking component, the blocking component comprising: a motion drive; a motion member connected to the motion drive and located on the side of the support component opposite to the moving member; and a second blocking component connected to the motion member for blocking a second connection hole opened on the product.
[0011] In some embodiments, the positioning fixture further includes a sealing assembly, the sealing assembly comprising: a first linear drive member; an assembly member connected to the first linear drive member and located on adjacent sides of the carrier assembly respectively with the movable member; a first blocking member connected to the assembly member for blocking the third connection hole opened on the product from the outside; a second linear drive member disposed on the carrier assembly; a sliding member slidably disposed on the carrier assembly in a direction pointing from the carrier assembly to the assembly member and connected to the second linear drive member; and a second blocking member connected to the sliding member for blocking the third connection hole from the inside.
[0012] In some embodiments, the detection device further includes: a first tee connector connected to the leak meter; a positive pressure input line connected to the first tee connector; a negative pressure input line connected to the first tee connector; a first valve disposed on the positive pressure input line; and a second valve disposed on the negative pressure input line.
[0013] In some embodiments, the ends of the positive pressure input line and the negative pressure input line away from the first tee are connected to a gas source. The detection device further includes: a first pressure regulating valve disposed on the positive pressure input line and located between the first valve and the gas source; a second pressure regulating valve disposed on the negative pressure input line and located between the second valve and the gas source; and a vacuum generator disposed on the negative pressure input line and located between the second pressure regulating valve and the gas source.
[0014] In some embodiments, the detection device further includes: a second tee connector, the positive pressure output pipeline and the negative pressure output pipeline being connected to the second tee connector and connected to the leak meter through the second tee connector; a third valve, disposed in the positive pressure output pipeline; and a fourth valve, disposed in the negative pressure output pipeline.
[0015] The testing device in this embodiment of the application, by setting up a positioning fixture, a leak meter, a positive pressure output pipeline, and a negative pressure output pipeline, first places the product on a supporting component during product testing. Then, a covering component is placed on the supporting component, so that the supporting component and the covering component respectively seal the first and second sides of the product, and the sealing component seals the part of the product that needs to be tested under positive pressure. When testing the part of the product that needs to be tested under positive pressure, the positive pressure output pipeline introduces positive pressure gas into the sealing component through a positive pressure channel opened on the moving part. The leak meter detects the airtightness of the part of the product that needs to be tested under positive pressure by sensing the pressure change of the positive pressure gas introduced into the sealing component. When testing the part of the product that needs to be tested under negative pressure, the negative pressure output pipeline draws negative pressure from inside the product. The leak meter detects the airtightness of the part of the product that needs to be tested under negative pressure by sensing the pressure change of the negative pressure inside the product. Thus, the detection device of this application embodiment only needs to clamp the product once to perform positive pressure detection or negative pressure detection on different parts of the product, thereby improving the efficiency of product detection; in addition, since only one set of the detection device of this application embodiment is needed to perform positive pressure detection or negative pressure detection on different parts of the product, the cost is reduced. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the detection device provided in the embodiments of this application.
[0017] Figure 2 Is with Figure 1 A three-dimensional structural diagram of a product compatible with the detection device shown.
[0018] Figure 3 yes Figure 1 A three-dimensional structural diagram of the positioning fixture for removing the pressure cap assembly in the detection device shown.
[0019] Figure 4 yes Figure 3 A three-dimensional structural diagram of the sealing component.
[0020] Figure 5 yes Figure 1 A three-dimensional structural diagram of the cover pressure assembly of the positioning fixture in the detection device shown.
[0021] Key component symbols: Detection device 100, positioning fixture 10, bearing assembly 11, bearing seat 111, positioning hole 1111, limiting component 112, limiting space 1121, first sealing component 113, cover pressure assembly 12, cover pressure seat 121, positioning protrusion 1211, second sealing component 122, locking component 123, sealing assembly 13, moving component 131, positive pressure channel 1311, sealing component 132, moving drive component 133, first blocking component 134, blocking assembly 14, motion drive component 141, moving component 142, second blocking component 143, sealing assembly 15, first linear drive component 151, assembly 152, first blocking component 153. Sliding component 154, second linear drive component 155, second blocking component 156, transmission rod 157, leak meter 20, positive pressure input pipeline 31, positive pressure output pipeline 32, negative pressure input pipeline 41, negative pressure output pipeline 42, first tee connector 51, second tee connector 52, first valve 61, second valve 62, third valve 63, fourth valve 64, first pressure regulating valve 71, second pressure regulating valve 72, vacuum generator 80, air source 90, product 200, middle frame 210, first side 2101, second side 2102, first connecting hole 2103, second connecting hole 2104, third connecting hole 2105, opening 2106, communication module 220. Detailed Implementation
[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0023] In the description of this application, it should be understood that the terms indicating 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 application and simplifying the description, and do not 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 application. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0026] Please see Figure 1 and Figure 2 This application provides a testing device 100 for airtightness testing of components and other products 200 of electronic devices such as mobile phones and tablets. For ease of understanding, this application uses a mobile phone as an example, with product 200 including a mid-frame 210 and a communication module 220 disposed on the mid-frame 210. Obviously, this is not a limitation of this application.
[0027] Please refer to the following: Figure 1 , Figure 3 and Figure 4 In this embodiment, the detection device 100 includes a positioning fixture 10, a leak meter 20, a positive pressure output pipeline 32, and a negative pressure output pipeline 42.
[0028] The positioning fixture 10 includes a support component 11, a cover component 12, and a sealing component 13. The cover component 12 is detachably mounted on the support component 11. The support component 11 and the cover component 12 are used to close the first side 2101 and the second side 2102 of the product 200, which are respectively positioned opposite each other. The sealing component 13 includes a movable member 131 and a sealing member 132. The movable member 131 is located on one side of the support component 11 and can move relative to the support component 11. The movable member 131 has a positive pressure channel 1311. The sealing member 132 is located on the movable member 131 and communicates with the positive pressure channel 1311. The sealing member 132 is used to seal the part of the product 200 that needs to be tested for positive pressure.
[0029] Leakage meter 20 is located on one side of positioning fixture 10. One end of positive pressure output line 32 is connected to leakage meter 20, and the other end of positive pressure output line 32 is connected to positive pressure channel 1311. Positive pressure output line 32 is used to introduce positive pressure gas into positive pressure channel 1311 so that leakage meter 20 can detect the part of product 200 that needs to be positive pressure tested.
[0030] One end of the negative pressure output pipeline 42 is connected to the leak meter 20, and the other end of the negative pressure output pipeline 42 is connected to the cover pressure assembly 12. The negative pressure output pipeline 42 is connected to the interior of the product 200. The negative pressure output pipeline 42 is used to draw negative pressure from the product 200 so that the leak meter 20 can detect the part of the product 200 that needs to be tested for negative pressure.
[0031] Among them, the sealing element 132 can be a sealing ring, the part of product 200 that needs to be tested for positive pressure is the communication module 220, which can be a 5G module, and the part of product 200 that needs to be tested for negative pressure is the middle frame 210. The first side 2101 and the second side 2102 of product 200 are the two sides of the opening 2106 in product 200, respectively.
[0032] During the testing of product 200, product 200 is first placed on the support assembly 11, and then the cover assembly 12 is placed on the support assembly 11, so that the support assembly 11 and the cover assembly 12 respectively seal the first side 2101 and the second side 2102 of product 200, and the sealing member 132 of the sealing assembly 13 seals the part of product 200 that needs to be tested under positive pressure. When testing the part of product 200 that needs to be tested under positive pressure, the positive pressure output pipeline 32 introduces positive pressure gas into the sealing member 132 through the positive pressure channel 1311 opened on the moving member 131. The leak detector 20 detects the airtightness of the part of product 200 that needs to be tested under positive pressure by sensing the pressure change of the positive pressure gas introduced into the sealing member 132. When testing the part of product 200 that needs to be tested under negative pressure, the negative pressure output pipeline 42 draws negative pressure from inside product 200, and the leak detector 20 detects the airtightness of the part of product 200 that needs to be tested under negative pressure by sensing the pressure change of the negative pressure inside product 200. Thus, the detection device 100 of this application embodiment only needs to clamp the product 200 once to perform positive pressure detection or negative pressure detection on different parts of the product 200, thereby improving the efficiency of detecting the product 200; in addition, since only one set of the detection device 100 of this application embodiment is needed to perform positive pressure detection or negative pressure detection on different parts of the product 200, the cost is reduced.
[0033] In some other embodiments, the other end of the negative pressure output pipeline 42 may also be connected to the carrier component 11, and the negative pressure output pipeline 42 may be connected to the interior of the product 200. In this case, the negative pressure output pipeline 42 may also draw negative pressure from the product 200, so that the leak detector 20 can detect the part of the product 200 that needs to be tested for negative pressure. This application embodiment does not specifically limit this.
[0034] In this embodiment, the supporting component 11 includes a supporting base 111, a plurality of limiting members 112, and a first closing member 113. The supporting base 111 is used to support the product 200. The plurality of limiting members 112 are spaced apart on the side of the supporting base 111 facing the covering component 12, and the plurality of limiting members 112 enclose a limiting space 1121 for receiving the product 200. The first closing member 113 is disposed on the supporting base 111 and located within the limiting space 1121. The first closing member 113 may be made of a flexible material such as rubber, and the first closing member 113 is used to close the first side 2101 of the product 200.
[0035] By setting multiple limiting members 112, and the multiple limiting members 112 enclosing and forming a limiting space 1121 for storing the product 200, the accuracy of the bearing assembly 11 in positioning the product 200 is improved. By setting the first closing member 113, the sealing effect of the bearing assembly 11 in closing the first side 2101 of the product 200 is improved.
[0036] Please refer to the following: Figure 5 In this embodiment, the cover pressing assembly 12 includes a cover pressing seat 121, a second sealing member 122, and a locking member 123. The cover pressing seat 121 covers the support assembly 11. The second sealing member 122 is located on the side of the cover pressing seat 121 facing the support assembly 11. The second sealing member 122 can also be made of a flexible material such as rubber. The second sealing member 122 is used to close the second side 2102 of the product 200. The locking member 123 is located on the cover pressing seat 121. The locking member 123 can be a locking handle. The locking member 123 is used to lock the cover pressing seat 121 and the support assembly 11.
[0037] By providing the second sealing member 122, the sealing effect of the cover pressure assembly 12 on the second side 2102 of the product 200 is improved. By providing the locking member 123 to lock the cover pressure seat 121 and the support assembly 11, the sealing effect of the support assembly 11 and the cover pressure assembly 12 on the first side 2101 and the second side 2102 of the product 200, respectively, is further improved.
[0038] In this embodiment, the cover seat 121 has a negative pressure channel (not shown) that communicates with the second sealing member 122, and the negative pressure output pipe 42 is connected to the negative pressure channel, so that the negative pressure output pipe 42 can draw negative pressure from the product 200.
[0039] In this embodiment, the support component 11 has a positioning hole 1111, and the cover component 12 has a positioning protrusion 1211 that engages with the positioning hole 1111. By providing the positioning hole 1111 and the positioning protrusion 1211, the accuracy of the cover component 12 pressing onto the support component 11 is improved, thereby improving the sealing effect of the support component 11 and the cover component 12 sealing the first side 2101 and the second side 2102 of the product 200, respectively.
[0040] In this embodiment, the positioning hole 1111 is formed on the bearing seat 111, and the positioning protrusion 1211 is provided on the cover seat 121.
[0041] In some other embodiments, the positioning hole 1111 may also be formed on the cover pressure component 12, and correspondingly, the positioning protrusion 1211 is provided on the support component 11. This application embodiment does not specifically limit this.
[0042] Please refer to it again. Figure 2 , Figure 3 and Figure 4 In this embodiment, the sealing assembly 13 further includes a moving drive component 133 and a first sealing component 134. The moving drive component 133 is disposed on one side of the supporting assembly 11 and connected to the moving component 131, and is used to drive the moving component 131 to move closer to or away from the supporting assembly 11. The first sealing component 134 is disposed on the moving component 131, and is used to seal the first connecting hole 2103 opened on the product 200.
[0043] Specifically, the moving drive component 133 can be a slide cylinder or a linear motor. The moving drive component 133 is mounted on the support base 111. By setting the moving drive component 133, the convenience of sealing the part of the product 200 that needs to be tested for positive pressure is improved by the sealing component 132 being driven by the moving component 131. The first connecting hole 2103 is the first button hole opened on the middle frame 210. The first sealing component 134 can be a sealing block made of flexible material. By setting the first sealing component 134 to seal the first connecting hole 2103 opened on the product 200, the accuracy of the detection device 100 in testing the airtightness of the part of the product 200 that needs to be tested for negative pressure is improved.
[0044] In this embodiment, the positioning fixture 10 further includes a sealing component 14, which includes a motion drive 141, a moving component 142, and a second sealing component 143. The motion drive 141 can be a slide cylinder or a linear motor, and is mounted on the support 111. The moving component 142 is connected to the motion drive 141 and is located on the side of the support 11 away from the moving component 131. The second sealing component 143 is connected to the moving component 142 and is used to seal the second connection hole 2104 opened on the product 200.
[0045] Specifically, the second connecting hole 2104 is a second button hole opened on the middle frame 210, and the second sealing member 143 can also be a sealing block made of flexible material. By setting the motion drive member 141 to drive the motion member 142 to seal the second connecting hole 2104 opened on the product 200, the accuracy of the detection device 100 in performing airtightness testing on the part of the product 200 that needs to be tested for negative pressure is improved.
[0046] In this embodiment, the positioning fixture 10 further includes a sealing component 15, which includes a first linear drive 151, an assembly 152, a first blocking component 153, a sliding component 154, a second linear drive 155, and a second blocking component 156. The first linear drive 151 is mounted on the support 111; the assembly 152 is connected to the first linear drive 151 and is located on adjacent sides of the support component 11, respectively, along with the moving component 131; the first blocking component 153 is connected to the assembly 152 and is used to block the third connecting hole 2105 opened on the product 200 from the outside; the second linear drive 155 is disposed on the support 111 of the support component 11; the sliding component 154 is slidably disposed on the support component 11 along the direction from the support component 11 to the assembly 152 and is connected to the second linear drive 155; the second blocking component 156 is connected to the sliding component 154 and is used to block the third connecting hole 2105 from the inside.
[0047] Specifically, the third connection hole 2105 is a power socket or communication socket opened on the middle frame 210. The first linear drive 151 and the second linear drive 155 can both be a slide cylinder or a linear motor. The first blocking member 153 and the second blocking member 156 can both be sealing blocks made of flexible material. By setting the first linear drive 151 to drive the first blocking member 153 to block the third connection hole 2105 opened on the product 200 from the outside, and setting the second linear drive 155 to drive the second blocking member 156 to block the third connection hole 2105 from the inside, the accuracy of the detection device 100 in performing airtightness testing on the parts of the product 200 that require negative pressure testing is improved.
[0048] In this embodiment, the sealing assembly 15 further includes a transmission rod 157 and a sealing ring (not shown). The transmission rod 157 is inserted into the support seat 111 along the sliding direction of the slider 154. One end of the transmission rod 157 is connected to the second linear drive member 155, and the other end of the transmission rod 157 is connected to the slider 154. The second linear drive member 155 drives the slider 154 to slide through the transmission rod 157. The sealing ring is sleeved on the transmission rod 157 and located inside the support seat 111. The sealing ring seals the gap between the transmission rod 157 and the support seat 111 (not shown), thereby preventing gas from passing through the gap between the transmission rod 157 and the support seat 111 when air tightness testing is performed on the part of the product 200 that requires negative pressure testing. This improves the accuracy of the testing device 100 in performing air tightness testing on the part of the product 200 that requires negative pressure testing.
[0049] Please refer to it again. Figure 1 In this embodiment, the detection device 100 further includes a first tee connector 51, a positive pressure input pipeline 31, a negative pressure input pipeline 41, a first valve 61, and a second valve 62. The first tee connector 51 is connected to the leak meter 20, the positive pressure input pipeline 31 is connected to the first tee connector 51, and the negative pressure input pipeline 41 is connected to the first tee connector 51. The positive pressure input pipeline 31 and the negative pressure input pipeline 41 are connected to the leak meter 20 through the first tee connector 51. The first valve 61 is located in the positive pressure input pipeline 31; the second valve 62 is located in the negative pressure input pipeline 41. Both the first valve 61 and the second valve 62 can be solenoid valves.
[0050] When performing an airtightness test on a portion of product 200 requiring positive pressure testing, the first valve 61 is opened and the second valve 62 is closed. Positive pressure gas is introduced into the positive pressure output pipeline 32 via the leak meter 20 through the positive pressure input pipeline 31. The leak meter 20 then tests the airtightness of the portion of product 200 requiring positive pressure testing. When performing an airtightness test on a portion of product 200 requiring negative pressure testing, the first valve 61 is closed and the second valve 62 is opened. Negative pressure is drawn from the negative pressure output pipeline 42 via the leak meter 20 through the negative pressure input pipeline 41. Negative pressure is drawn from the product 200 through the negative pressure output pipeline 42. The leak meter 20 then tests the airtightness of the portion of product 200 requiring negative pressure testing. By setting the first tee connector 51, it is convenient to connect the positive pressure input pipeline 31 and the negative pressure input pipeline 41 to the leak meter 20; by setting the first valve 61 and the second valve 62, it is prevented that the gas in the positive pressure input pipeline 31 will continuously enter the negative pressure input pipeline 41 and cause abnormal detection, thereby improving the accuracy of the detection device 100 in detecting the airtightness of different parts of the product 200.
[0051] In this embodiment, the ends of the positive pressure input pipeline 31 and the negative pressure input pipeline 41 furthest from the first tee connector 51 are connected to the air source 90. The detection device 100 also includes a first pressure regulating valve 71, a second pressure regulating valve 72, and a vacuum generator 80. The first pressure regulating valve 71 is located in the positive pressure input pipeline 31 and between the first valve 61 and the air source 90. The second pressure regulating valve 72 is located in the negative pressure input pipeline 41 and between the second valve 62 and the air source 90; the vacuum generator 80 is located in the negative pressure input pipeline 41 and between the second pressure regulating valve 72 and the air source 90. By providing the vacuum generator 80, it is convenient to use the positive pressure gas input from the air source 90 to draw negative pressure from the negative pressure input pipeline 41, thereby facilitating the detection device 100 to perform airtightness testing on different parts of the product 200 using the same air source 90. By setting the first pressure regulating valve 71 and the second pressure regulating valve 72, the accuracy of outputting positive pressure gas in the positive pressure input pipeline 31 and the accuracy of drawing negative pressure in the negative pressure input pipeline 41 are improved, thereby further improving the accuracy of the detection device 100 in detecting the airtightness of different parts of the product 200.
[0052] In this embodiment, the detection device 100 further includes a second three-way connector 52, a third valve 63, and a fourth valve 64. The positive pressure output line 32 and the negative pressure output line 42 are connected to the second three-way connector 52 and, through the second three-way connector 52, to the leak meter 20; the third valve 63 is located in the positive pressure output line 32; and the fourth valve 64 is located in the negative pressure output line 42. Both the third valve 63 and the fourth valve 64 can be solenoid valves.
[0053] When a positive pressure test is performed on the part of product 200 requiring airtightness, the third valve 63 is opened and the fourth valve 64 is closed. Positive pressure gas is introduced into the positive pressure output pipeline 32 via the leak meter 20 through the positive pressure input pipeline 31. The leak meter 20 then tests the airtightness of the part of product 200 requiring positive pressure testing. When a negative pressure test is performed on the part of product 200 requiring airtightness, the third valve 63 is closed and the fourth valve 64 is opened. Negative pressure is drawn from the negative pressure output pipeline 42 via the leak meter 20 through the negative pressure input pipeline 41. Negative pressure is drawn from the product 200 through the negative pressure output pipeline 42. The leak meter 20 then tests the airtightness of the part of product 200 requiring negative pressure testing. By setting a second tee connector 52, it is convenient to connect the positive pressure output pipeline 32 and the negative pressure output pipeline 42 to the leak meter 20; by setting a third valve 63 and a fourth valve 64, it is prevented that gas in the positive pressure output pipeline 32 will continuously enter the negative pressure output pipeline 42 and cause abnormal detection, thereby improving the accuracy of the detection device 100 in detecting the airtightness of different parts of the product 200.
[0054] In other embodiments, when the leak meter 20 is provided with multiple input interfaces (not shown) and multiple output interfaces (not shown), the positive pressure input line 31 and the negative pressure input line 41 can also be directly connected to the two input interfaces respectively, and the positive pressure output line 32 and the negative pressure output line 42 can also be directly connected to the two output interfaces respectively. This application embodiment does not specifically limit this.
[0055] In this embodiment, the detection device 100 also includes a two-position three-way solenoid valve (not shown in the figure), and the positive pressure input line 31 and the negative pressure input line 41 are connected to the air source 90 through the two-position three-way solenoid valve.
[0056] In summary, the detection device 100 of this application embodiment, by setting up the positioning fixture 10, the leak meter 20, the positive pressure output pipeline 32 and the negative pressure output pipeline 42, only requires clamping the product 200 once to perform positive or negative pressure detection on different parts of the product 200, thereby improving the efficiency of product detection; in addition, since only one set of the detection device 100 of this application embodiment is needed to perform positive or negative pressure detection on different parts of the product 200, the cost is reduced.
[0057] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A detection device, characterized in that, include: A positioning fixture includes a support component, a cover component, and a sealing component. The cover component is detachably mounted on the support component. The support component and the cover component are used to close a first side and a second side of the product that are positioned opposite each other. The sealing component includes a movable component and a sealing component. The movable component is located on one side of the support component and can move relative to the support component. The movable component has a positive pressure channel. The sealing component is located on the movable component and communicates with the positive pressure channel. The sealing component is used to seal the part of the product that needs to be tested for positive pressure. A leak meter is located on one side of the positioning fixture; A positive pressure output pipeline, one end connected to the leak detector and the other end connected to the positive pressure channel, is used to introduce positive pressure gas into the positive pressure channel so that the leak detector can detect the part of the product that requires positive pressure testing; and A negative pressure output pipeline is connected at one end to the leak meter and at the other end to the bearing component or the cover pressure component. It is used to draw negative pressure from the product so that the leak meter can detect the part of the product that needs to be tested for negative pressure.
2. The detection device as described in claim 1, characterized in that, The sealing assembly further includes: A movable drive component is disposed on one side of the support assembly and connected to the movable component, for driving the movable component to move closer to or away from the support assembly; A first sealing element is disposed on the movable element and is used to seal the first connection hole opened on the product.
3. The detection device as described in claim 1, characterized in that, The carrier component includes: Support; Multiple limiting members are spaced apart on the side of the support facing the cover assembly, and the multiple limiting members enclose a limiting space for receiving the product; and A first closure element is disposed on the support and located within the limiting space, for closing the first side of the product.
4. The detection device as described in claim 1, characterized in that, The cover pressure assembly includes: A cover seat is placed over the bearing component; A second closure member is disposed on the side of the cover pressure seat facing the support assembly, for closing the second side of the product; and A locking element is provided on the cover pressure seat for locking the cover pressure seat and the bearing assembly.
5. The detection device as described in claim 1, characterized in that, One of the bearing component and the cover component is provided with a positioning hole, and the other of the bearing component and the cover component is provided with a positioning protrusion that is inserted into the positioning hole.
6. The detection device as described in claim 1, characterized in that, The positioning fixture further includes a sealing component, which comprises: Motion drive components; A moving component, connected to the motion drive component and located on the side of the support assembly opposite to the moving component; and The second sealing element is connected to the moving part and is used to seal the second connection hole opened on the product.
7. The detection device as described in claim 1, characterized in that, The positioning fixture further includes a sealing component, which comprises: First linear drive component; The assembly is connected to the first linear drive component and is located on adjacent sides of the carrier component, respectively, with the moving component. The first plugging component is connected to the assembly and is used to block the third connection hole opened on the product from the outside; A second linear drive element is disposed on the load-bearing component; A sliding member is slidably disposed on the support assembly along the direction from the support assembly to the mounting part and connected to the second linear drive member; and The second plugging component, connected to the sliding component, is used to block the third connecting hole from the inside.
8. The detection device as described in claim 1, characterized in that, The detection device further includes: The first tee connector is connected to the leak meter; A positive pressure input pipeline is connected to the first tee connector; The negative pressure input pipeline is connected to the first tee connector; A first valve is provided in the positive pressure input pipeline; and The second valve is located in the negative pressure input pipeline.
9. The detection device as described in claim 8, characterized in that, The positive pressure input pipeline and the negative pressure input pipeline, at the ends furthest from the first tee joint, are connected to a gas source. The detection device further includes: A first pressure regulating valve is provided in the positive pressure input pipeline and located between the first valve and the gas source; A second pressure regulating valve is provided in the negative pressure input pipeline and located between the second valve and the gas source; and A vacuum generator is installed in the negative pressure input pipeline and located between the second pressure regulating valve and the gas source.
10. The detection device as described in claim 1, characterized in that, The detection device further includes: The second three-way connector connects the positive pressure output pipeline and the negative pressure output pipeline to the second three-way connector, and connects to the leak meter through the second three-way connector; A third valve is provided in the positive pressure output pipeline; and The fourth valve is located in the negative pressure output pipeline.