Middle frame air tightness testing device of mobile equipment

Abstract

The invention discloses a middle frame air tightness testing device of mobile equipment, a middle frame is arranged in a frame body shape and is provided with an upper opening and a lower opening which are opposite to each other, at least one function hole is formed, and the air tightness testing device comprises a lower jig component, an upper jig component, a connecting rod, a plugging driving piece and a plugging component, the lower jig component is provided with a supporting face used for abutting against the lower side of the middle frame and sealing the lower opening, and is provided with a vent hole penetrating through the supporting face. The upper jig component is provided with a binding face used for abutting against the upper side of the middle frame and closing the upper opening. A first mounting groove is concavely formed in the binding surface, and a connecting hole communicated with the first mounting groove is formed in the side wall of the upper jig component; the connecting rod is arranged in the connecting hole in a penetrating manner; the plugging driving piece is arranged on the side wall of the upper jig component, and the output end is connected with one end of the connecting rod; one end of the plugging component is located in the first mounting groove and connected with the other end of the connecting rod, and the other end of the plugging component is exposed out of the first mounting groove and located in an internal space formed among the middle frame, the supporting face and the binding face.

Description

Technical Field

[0001] The present invention relates to the field of airtightness testing equipment for mobile devices, and particularly to an airtightness testing device for the middle frame of a mobile device. Background Art

[0002] The airtightness testing device for the middle frame of a mobile device is used to detect the sealing performance of the middle frame of devices such as mobile phones. The middle frame of a mobile device is usually a frame structure for connecting the screen and the rear cover, and is provided with openings such as a headphone jack and a charging hole. Its airtightness affects the waterproof and dustproof capabilities (such as the IP68 waterproof rating). The airtightness testing device for the middle frame of a mobile device detects whether there is leakage in the middle frame through air pressure testing to ensure the airtightness of the product.

[0003] In related technologies, the airtightness testing device for the middle frame of a mobile device mostly adopts the method of plugging air holes on the outside for testing, and its tightness is insufficient. External plugging is difficult to simulate the real pressure state, and it is easy to miss the leakage points of complex middle frames, resulting in inaccurate test results and affecting the protection performance of the device.

[0004] Therefore, there is an urgent need to design an airtightness testing device for the middle frame of a mobile device that can improve the test tightness and reliability and meet the high-standard waterproof and dustproof requirements. Summary of the Invention

[0005] To achieve the above object, the present invention provides an airtightness testing device for the middle frame of a mobile device, aiming to design an airtightness testing device for the middle frame of a mobile device that can improve the test tightness and reliability.

[0006] The main object of the present invention is to provide an airtightness testing device for the middle frame of a mobile device. The middle frame of the mobile device is arranged in a frame shape, and the middle frame has opposite upper and lower openings and is provided with at least one functional hole. The airtightness testing device includes:

[0007] A lower fixture member having a supporting surface for abutting against the lower side of the middle frame and closing the lower opening; the lower fixture member is provided with a ventilation hole penetrating through the supporting surface;

[0008] An upper fixture member arranged in a flat plate shape and having a fitting surface for abutting against the upper side of the middle frame and closing the upper opening; the fitting surface is recessed with a first installation groove, and the side wall of the upper fixture member is provided with a connection hole communicating with the first installation groove;

[0009] A connecting rod, the connecting rod is inserted into the connection hole;

[0010] A plugging driving member arranged on the side wall of the upper fixture member, and the output end of which is connected to one end of the connecting rod;

[0011] A plugging member, one end of which is located in the first installation groove and is connected to the other end of the connecting rod, and the other end of the plugging member is exposed outside the first installation groove and is located in the internal space formed between the middle frame, the support surface and the fitting surface;

[0012] Wherein, the plugging driving member is used to drive the plugging member to move so that one end of the plugging member exposed outside the first installation groove plugs or moves away from the functional hole, and the ventilation hole is used to introduce test gas into the middle frame to test the airtightness of the middle frame by detecting the change of gas pressure.

[0013] In some embodiments, the plugging member includes:

[0014] A connecting member, located in the first installation groove, one end of which is connected to the other end of the connecting rod;

[0015] A plug, connected to the other end of the connecting member, exposed outside the first installation groove, and located in the internal space formed between the middle frame, the support surface and the fitting surface.

[0016] In some embodiments, the plugging member further includes:

[0017] A first adapter, one end of which is connected to the connecting member;

[0018] A second adapter, one end of which is connected to the other end of the first adapter and the other end of which is connected to the plug;

[0019] Wherein, the second adapter is inclined relative to the support surface.

[0020] In some embodiments, the fitting surface is further recessed with a second installation groove located between the first installation groove and the connection hole, and the second installation groove communicates with the first installation groove and the connection hole; The middle frame airtightness testing device of the mobile device further includes:

[0021] A guiding member, disposed in the second installation groove, the guiding member is provided with a slideway for at least part of the second adapter to slidably pass through, and the slideway is inclined relative to the support surface.

[0022] In some embodiments, a groove is formed on one side of the second adapter facing the guiding member, and the middle frame airtightness testing device of the mobile device further includes:

[0023] An abutting plate, disposed in the second installation groove and located on the side of the slideway away from the second adapter;

[0024] An elastic member, one end of which abuts against the bottom wall of the groove and the other end of which abuts against the abutting plate.

[0025] In some embodiments, the middle frame airtightness testing device of the mobile device further includes:

[0026] A profiling member, detachably connected to the fitting surface, for filling the internal space formed between the middle frame and the support surface and the fitting surface;

[0027] Wherein, the profiling member partially covers the first installation groove and the second installation groove, and is provided with an avoidance notch for the plug to move.

[0028] In some embodiments, the middle frame airtightness testing device of the mobile device further includes:

[0029] A plurality of limiting members, one end connected to the support surface, and the other end facing the fitting surface. Each of the limiting members and the support surface enclose a limiting space for placing the middle frame; the ventilation holes are located between the limiting members.

[0030] In some embodiments, the lower fixture member includes a flat plate portion and a plurality of protruding portions. The top surface of the flat plate portion is the support surface, and the plurality of protruding portions are arranged at intervals along the peripheral side of the flat plate portion. One end of the protruding portion is connected to the support surface, and the other end is used to abut against the fitting surface; the height of each of the limiting members is lower than the height of the protruding portions.

[0031] In some embodiments, one of the fitting surface and the protruding portion is recessed with a positioning groove, and the other of the fitting surface and the protruding portion is provided with a positioning rod adapted to the positioning groove, and the positioning rod can extend into the positioning groove.

[0032] In some embodiments, the middle frame airtightness testing device of the mobile device further includes:

[0033] A holding driving member, provided on the lower fixture member;

[0034] A holding member, provided at the output end of the holding driving member, located outside the middle frame, and facing the plugging member;

[0035] Wherein, the holding driving member is used to drive the holding member to move horizontally towards the middle frame to abut against the outside of the middle frame.

[0036] In this application, the support surface of the lower fixture component abuts against the lower side of the middle frame and closes the lower opening, and the fitting surface of the upper fixture component abuts against the upper side of the middle frame and closes the upper opening, so that the internal space formed between the middle frame and the support surface and the fitting surface forms a sealed test space. A blocking component is arranged in the internal space of the middle frame. The connecting rod is driven by a blocking driving component, so that the exposed end of the blocking component blocks the functional holes (such as earphone holes, charging holes, etc.) on the middle frame, preventing the test gas from leaking through the functional holes. The ventilation holes on the lower fixture component introduce the test gas into the middle frame, and the airtightness of the middle frame is judged by detecting the change of gas pressure. If the pressure is stable, the airtightness is good; if the pressure drops, it indicates that there is a leak. By internally blocking the functional holes and applying the test gas, the internal pressure state of the middle frame in actual use is simulated. Compared with the traditional external blocking method, the internal sealing performance of the middle frame can be detected more accurately. Brief Description of the Drawings

[0037] Figure 1 It is a schematic structural view of the middle frame in an embodiment of the middle frame airtightness test device of the mobile device of the present invention;

[0038] Figure 2 It is a schematic structural view of an embodiment of the middle frame airtightness test device of the mobile device of the present invention;

[0039] Figure 3 It is Figure 2 A schematic structural view of the middle frame airtightness test device of the mobile device of the present invention from a top-down perspective;

[0040] Figure 4 It is Figure 3 A sectional view taken along line A-A;

[0041] Figure 5 It is a schematic structural view of the blocking component and the guiding component in an embodiment of the middle frame airtightness test device of the mobile device of the present invention;

[0042] Figure 6 It is a schematic structural view of the upper fixture component and the profiling part in an embodiment of the middle frame airtightness test device of the mobile device of the present invention;

[0043] Figure 7 It is Figure 6 A schematic structural view of the upper fixture component from another angle;

[0044] Figure 8 It is a schematic structural view of a part of the structure in an embodiment of the middle frame airtightness test device of the mobile device of the present invention.

[0045] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0046] The following will clearly and completely describe the solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0048] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0049] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Referring to Figure 1 , Figure 1 is a schematic structural diagram of a middle frame. Referring to Figures 2 to 7 , the present application proposes an airtightness testing device for the middle frame of a mobile device. The middle frame 1 of the mobile device is arranged in a frame shape. The middle frame 1 has opposite upper and lower openings and is provided with at least one functional hole 100. The airtightness testing device includes:

[0051] A lower fixture member 2 having a support surface 200 for abutting against the lower side of the middle frame 1 to close the lower opening; the lower fixture member 2 is provided with a ventilation hole 201 penetrating through the support surface 200;

[0052] An upper fixture member 3 is arranged in a flat plate shape and has a fitting surface 300 for abutting against the upper side of the middle frame 1 to close the upper opening; the fitting surface 300 is recessed with a first installation groove 301, and the side wall of the upper fixture member 3 is provided with a connection hole 302 communicating with the first installation groove 301;

[0053] The connecting rod 4 is inserted into the connecting hole 302;

[0054] The plugging driving member 5 is disposed on the side wall of the upper jig member 3, and the output end is connected to one end of the connecting rod 4;

[0055] The plugging member 6 has one end located in the first installation groove 301, and is connected to the other end of the connecting rod 4. The other end of the plugging member 6 is exposed outside the first installation groove 301 and is located in the internal space formed between the middle frame 1, the supporting surface 200, and the fitting surface 300;

[0056] Wherein, the plugging driving member 5 is used to drive the plugging member 6 to move, so that one end of the plugging member 6 exposed outside the first installation groove 301 plugs or moves away from the functional hole 100. The vent hole 201 is used to introduce the test gas into the inside of the middle frame 1 to test the airtightness of the middle frame 1 by detecting the change of the gas pressure.

[0057] In this embodiment, the mobile device referred to in the present application may be a mobile phone, a tablet computer or other portable terminals. The middle frame 1 of the mobile device usually adopts a frame structure design and is used as a key support and protection component of the device to connect the front cover and the back cover. Its structure is a hollow frame with opposite upper and lower openings. The inside of the frame is used to accommodate internal electronic components and connect external interfaces. The middle frame 1 is usually made of materials such as metal or high-strength plastic, and is provided with at least one functional hole 100 (such as a headphone jack, a charging port or a microphone hole) on the surface to meet the functional requirements of the device. Since the middle frame 1 needs to withstand the internal pressure and protect the internal components, its airtightness directly affects the waterproof and dustproof performance of the device, so strict airtightness testing is required. The device realizes the airtightness test of the middle frame 1 through the following core design:

[0058] The working principle of the airtightness device of the middle frame 1 of the present application to realize the airtightness test of the middle frame 1 is as follows:

[0059] Closing the upper and lower openings of the middle frame 1: The supporting surface 200 of the lower jig member 2 abuts against the lower side of the middle frame 1 to close the lower opening, and the fitting surface 300 of the upper jig member 3 abuts against the upper side of the middle frame 1 to close the upper opening, so that the internal space formed between the middle frame 1, the supporting surface 200, and the fitting surface 300 forms a sealed test space.

[0060] Plugging the functional hole 100 inside: The plugging member 6 is located in the internal space of the middle frame 1. By driving the connecting rod 4 through the plugging driving member 5, the exposed end of the plugging member 6 plugs the functional hole 100 (such as a headphone jack, a charging hole, etc.) on the middle frame 1 to prevent the test gas from leaking from the functional hole 100.

[0061] Internal application of test gas: The vent hole 201 on the lower fixture member 2 allows the test gas to enter the interior of the middle frame 1. By detecting the change in gas pressure, the airtightness of the middle frame 1 can be determined. If the pressure is stable, the airtightness is good; if the pressure drops, it indicates a leak. By internally blocking the functional hole 100 and applying the test gas, the internal pressure state of the middle frame 1 during actual use is simulated. Compared with the traditional external blocking method, the internal sealing performance of the middle frame 1 can be detected more accurately.

[0062] The testing process of using the airtightness testing device for the middle frame 1 of this application can be divided into the following five steps:

[0063] Placing the middle frame 1: Place the middle frame 1 to be tested on the support surface 200 of the lower fixture member 2. The support surface 200 abuts against the lower side of the middle frame 1 and closes the lower opening.

[0064] Closing the upper opening: The fitting surface 300 of the upper fixture member 3 abuts against the upper side of the middle frame 1 to close the upper opening. At this time, both the upper and lower openings of the middle frame 1 are closed, forming a sealed space. This step can be driven by the upper fixture member 3 manually or automatically in different ways such as manually or by a cylinder, motor, etc., which is not limited here.

[0065] Blocking the functional hole 100: The blocking driving member 5 (such as a cylinder or a motor) starts, driving the connecting rod 4 to move. The connecting rod 4 passes through the connecting hole 302 on the side wall of the upper fixture member 3. One end of it is connected to the output end of the blocking driving member 5, and the other end is connected to the blocking member 6 located in the first installation groove 301. One end of the blocking member 6 exposed outside the first installation groove 301 (hereinafter referred to as the exposed end) moves accordingly under the drive of the connecting rod 4 to block the functional hole 100 of the middle frame 1 to ensure that the test gas does not leak from the functional hole 100.

[0066] Introducing the test gas: Introduce the test gas (such as air or inert gas) into the interior of the middle frame 1 through the vent hole 201 on the lower fixture member 2.

[0067] Detecting the airtightness: Monitor the change in gas pressure inside the middle frame 1. If the pressure remains stable within the set time, it indicates that the airtightness of the middle frame 1 is good; if the pressure drops, it indicates a leak and the airtightness is unqualified.

[0068] This application has achieved the following beneficial effects by setting up the airtightness testing device for the middle frame of the mobile device with the above structure:

[0069] The lower jig component 2 and the upper jig component 3 respectively seal the upper and lower openings of the middle frame 1 to form a completely airtight test space, ensuring that the test gas only circulates inside the middle frame 1 and avoiding external interference. Achieving quantitative detection: Then, by plugging the functional hole 100 from the inside, the real state of the middle frame 1 during use is simulated, avoiding the air leakage problem caused by loose contact during external plugging, thereby improving the test accuracy. By introducing the test gas through the vent hole 201 and combining with pressure detection, the airtightness of the middle frame 1 can be quantitatively evaluated, providing scientific test data.

[0070] In summary, the airtightness test device for the middle frame 1 of the mobile device in this embodiment effectively realizes the airtightness test of the middle frame 1 of the mobile device through the design of closing the opening of the middle frame 1 by the upper and lower jig components 2, plugging the inner side of the functional hole 100 by the plugging component 6, and applying the test gas through the vent hole 201. Its working principle is based on internal pressure simulation, with a simple and efficient process and remarkable effects. It not only improves the accuracy and reliability of the test but also meets the detection requirements for the sealing performance of the middle frame 1 of the mobile device.

[0071] Refer to Figures 4 to 6 , in some embodiments, the plugging component 6 proposed in the embodiments of the present application includes:

[0072] A connecting piece 61, located in the first installation groove 301, and one end thereof is connected to the other end of the connecting rod 4;

[0073] A plug 62, connected to the other end of the connecting piece 61, exposed outside the first installation groove 301, and located in the internal space formed between the middle frame 1, the support surface 200, and the fitting surface 300.

[0074] In this embodiment, the plugging component 6 is composed of two parts: a connecting piece 61 and a plug 62. The connecting piece 61 is located in the first installation groove 301 of the upper jig component 3, and one end thereof is connected to the other end of the connecting rod 4, receiving the driving force of the plugging driving member 5. The plug 62 is connected to the other end of the connecting piece 61, exposed outside the first installation groove 301 and extending into the internal space formed between the middle frame 1, the support surface 200, and the fitting surface 300.

[0075] The plugging driving member 5 drives the connecting piece 61 to move through the connecting rod 4. The connecting piece 61, as an intermediate transmission component, transmits the driving force to the plug 62. The plug 62 moves along a specific path driven by the connecting piece 61, and finally realizes the plugging or separation from the functional hole 100 of the middle frame 1.

[0076] The plug 62 is located in the internal space of the middle frame 1 and directly acts on the inner side of the functional hole 100. By fitting or inserting into the functional hole 100, the plug 62 forms a sealing interface with the inner wall of the functional hole 100, preventing the test gas from leaking from the functional hole 100 and providing an airtight condition for the airtightness test.

[0077] After the plug 62 seals the functional hole 100, it acts together with the test gas introduced through the vent hole 201 on the lower fixture member 2. By detecting the change in the internal pressure of the middle frame 1, the airtightness of the middle frame 1 is judged. This inner sealing design simulates the internal pressure state of the middle frame 1 during actual use.

[0078] Please continue to refer to Figure 5 , in some embodiments, the plugging member 6 proposed in the embodiments of the present application further includes:

[0079] A first adapter 63, one end of which is connected to the connecting member 61;

[0080] A second adapter 64, one end of which is connected to the other end of the first adapter 63, and the other end of which is connected to the plug 62;

[0081] Wherein, the second adapter 64 is inclined relative to the support surface 200.

[0082] In this embodiment, on the basis of the original connecting member 61 and plug 62, the plugging member 6 is further provided with a first adapter 63 and a second adapter 64, and the second adapter 64 is inclined relative to the support surface 200.

[0083] The plugging member 6 is composed of a connecting member 61, a first adapter 63, a second adapter 64 and a plug 62 connected in sequence. The connecting member 61 is located in the first installation groove 301, and the connecting rod 4 connected to the output of the plugging driving member 5 receives the transmission of the driving force. One end of the first adapter 63 is connected to the connecting member 61, and the other end is connected to the second adapter 64, playing a role of transitional connection. One end of the second adapter 64 is connected to the first adapter 63, and the other end is connected to the plug 62. The plugging driving member 5 drives the connecting member 61 to move horizontally through the connecting rod 4, the connecting member 61 drives the first adapter 63 and thus drives the second adapter 64, and finally the plug 62 moves horizontally to seal or move away from the functional hole 100.

[0084] The second adapter 64 is inclined relative to the support surface 200 (usually a horizontal reference plane). The purpose of the inclined setting is to save the internal occupied space of the plugging member 6. The plug 62 is connected to the end of the second adapter 64 and is located in the internal space formed between the middle frame 1, the support surface 200 and the fitting surface 300. Driven by the plugging driving member 5, the plug 62 moves horizontally driven by the second adapter 64, and finally aligns with and seals the functional hole 100 (such as a headphone hole, a charging hole, etc.) on the middle frame 1. The plug 62 forms a sealing interface with the inner wall of the functional hole 100 to prevent the test gas from leaking from the functional hole 100 and provide a sealed condition for the airtightness test.

[0085] Please continue to refer to Figures 5 to 7, in some embodiments, the fitting surface 300 proposed in the embodiments of the present application is further recessed with a second installation groove 303 located between the first installation groove 301 and the connection hole 302. The second installation groove 303 communicates with the first installation groove 301 and the connection hole 302. The airtightness testing device for the middle frame of the mobile device further includes:

[0086] A guiding member 7 is disposed in the second installation groove 303. The guiding member 7 is provided with a sliding track 701 for at least part of the second adapter 64 to slidably pass through. The sliding track 701 is inclined relative to the supporting surface 200.

[0087] In this embodiment, the guiding member 7 is disposed in the fitting surface 300 of the upper fixture member 3, specifically in the second installation groove 303 between the first installation groove 301 and the connection hole 302. The second installation groove 303 communicates with the first installation groove 301 and the connection hole 302, providing an installation space for the guiding member 7 and ensuring its connection with the movement path of the plugging member 6 (including the connecting member 61, the first adapter 63, the second adapter 64, and the plug 62). The guiding member 7 is provided with a sliding track 701, and the design of the sliding track 701 allows at least part of the second adapter 64 to slidably pass through it.

[0088] The sliding track 701 is inclined relative to the supporting surface 200 (usually a horizontal reference plane). This inclined design makes the sliding track 701 form an inclined movement track. When the plugging driving member 5 drives the connecting member 61 to move horizontally through the connecting rod 4, the connecting member 61 drives the first adapter 63 and the second adapter 64 horizontally. Part of the second adapter 64 slides in the sliding track 701. Constrained by the inclined direction of the sliding track 701, its movement trajectory is manifested as sliding along the inclined path.

[0089] The inclined movement of the second adapter 64 is guided by the sliding track 701, and finally the plug 62 moves obliquely towards the functional hole 100. The purpose of the inclined setting of the sliding track 701 is to make the plug 62 have both horizontal movement and oblique movement in the direction inclined towards the functional hole 100 when being driven, and finally enable the plug 62 to move along the direction of the functional hole 100.

[0090] Moreover, the sliding track 701 of the guiding member 7 provides a fixed movement track for the second adapter 64, restricting its deviation in the unexpected direction and ensuring the accuracy of the movement path. At the same time, the inclined setting of the sliding track 701 can optimize the movement path, enabling the plug 62 to approach the functional hole 100 at a more appropriate angle in the narrow internal space of the middle frame 1, avoiding plugging failure caused by space limitation or angle mismatch.

[0091] Refer to Figures 5 to 7, in some embodiments, a groove is formed on one side of the second adapter 64 facing the guiding member 7. The airtightness testing device for the middle frame of the mobile device further includes:

[0092] Abutting plate 8, which is arranged in the second installation groove 303 and is located on the side of the slideway 701 away from the second adapter 64;

[0093] Elastic member 9, one end of which abuts against the bottom wall of the groove and the other end abuts against the abutting plate 8.

[0094] In this embodiment, a groove is formed on one side of the second adapter 64 facing the guiding member 7 for accommodating the elastic member 9. The elastic member 9 can be a spring or other elastic substances that can be compressed / restore their shapes. The abutting plate 8 is arranged in the second installation groove 303 and is located on the side of the slideway 701 away from the second adapter 64, serving as a fixed support point for the elastic member 9. One end of the elastic member 9 (such as a spring) abuts against the bottom wall of the groove and the other end abuts against the abutting plate 8, forming an elastic support system.

[0095] The elastic member 9 forms an elastic connection between the second adapter 64 and the abutting plate 8. When the plugging driving member 5 drives the connecting member 61 to move through the connecting rod 4, and then drives the first adapter 63 and the second adapter 64, the second adapter 64 slides in the slideway 701. The elastic member 9 is compressed during this process, generating an elastic force to provide buffering and support for the movement of the second adapter 64.

[0096] When the second adapter 64 slides along the slideway 701 towards the direction close to the functional hole 100, the elastic member 9 may be compressed, applying a reverse elastic force to the second adapter 64 to slow down its movement speed and avoid hard collision between the plug 62 and the inner wall of the functional hole 100.

[0097] When the plug 62 slides away from the functional hole 100, the elastic member 9 recovers, providing a certain restoring force to help the second adapter 64 reset.

[0098] Refer to Figure 6 , in some embodiments, the airtightness testing device for the middle frame of the mobile device proposed in the embodiments of the present application further includes:

[0099] Copying member 10, which is detachably connected to the fitting surface 300 for filling the internal space formed between the middle frame 1, the supporting surface 200 and the fitting surface 300;

[0100] Wherein, the copying member 10 partially covers the first installation groove 301 and the second installation groove 303, and is provided with an avoidance notch 1001 for the plug 62 to move.

[0101] In this embodiment, the profiling part 10 is detachably connected to the fitting surface 300 of the upper fixture member 3 and is used to fill the internal space formed between the middle frame 1, the support surface 200, and the fitting surface 300. The designed shape of the profiling part 10 matches the geometric structure of the internal space of the middle frame 1. Part of it covers the first installation groove 301 and the second installation groove 303, and at the same time, an avoidance notch 1001 is provided to allow the plug 62 to move without hindrance.

[0102] The inside of the middle frame 1 is usually a cavity structure, with voids that are not filled by the test components. During the airtightness test, these voids may cause uneven distribution of the test gas inside, affecting the test accuracy. By filling the internal space formed between the middle frame 1, the support surface 200, and the fitting surface 300, the profiling part 10 reduces the volume of the voids, simulates the state of the middle frame 1 after being filled with internal components during actual use, and makes the test environment closer to the real use scenario.

[0103] When the profiling part 10 covers the first installation groove 301 and the second installation groove 303, an avoidance notch 1001 is designed to reserve space specifically for the movement path of the plug 62. When the plugging driving part 5 drives the connecting member 61, the first adapter 63, and the second adapter 64 to move, the plug 62 moves through the avoidance notch 1001 to achieve the plugging of the functional hole 100. The setting of the avoidance notch 1001 ensures that the profiling part 10 does not restrict the movement of the plug 62 while maintaining the filling effect of the internal space.

[0104] The profiling part 10 is detachably connected to the fitting surface 300, allowing different profiling parts 10 to be replaced according to different models or shapes of the middle frame 1. This design enables the device to adapt to various middle frame 1 structures, enhancing the versatility and applicability of the test device.

[0105] Refer to Figure 8 , in some embodiments, the middle frame airtightness test device for a mobile device proposed in the embodiments of the present application further includes:

[0106] A plurality of limiting members 11, one end of which is connected to the support surface 200, and the other end is arranged towards the fitting surface 300. Each limiting member 11 and the support surface 200 enclose a limiting space for placing the middle frame 1; the ventilation holes 201 are located between the limiting members 11.

[0107] In this embodiment, one end of the limiting member 11 is connected to the support surface 200 of the lower fixture member 2, and the other end is arranged towards the fitting surface 300 of the upper fixture member 3. A plurality of limiting members 11 enclose a limiting space, and the shape and size of this space match the outer shape of the middle frame 1 for placing and fixing the middle frame 1. The limiting members 11 are usually columnar or plate-shaped and are distributed along the circumferential side of the support surface 200 to ensure that the middle frame 1 can be firmly restricted within a specific area.

[0108] Before the test starts, place the middle frame 1 within the limiting space formed by enclosing the limiting member 11. The enclosing structure of the limiting member 11 restricts the movement of the middle frame 1 in the horizontal direction (i.e., the direction parallel to the support surface 200), preventing it from shifting due to external forces during the test (such as the pressure of the test gas, the touch of the operator, or the contact when the plug 62 is driven to close the functional hole 100). This positioning and fixing function ensures the stable position of the middle frame 1 during the test, providing a reliable basis for subsequent plugging and testing steps.

[0109] In summary, in the embodiment of the present application, the position of the middle frame 1 is restricted by setting the limiting member 11. The fitting surface 300 of the upper fixture member 3 closes the upper opening of the middle frame 1. The plugging member 6 plugs the functional hole 100, and the vent hole 201 introduces the test gas into the interior of the middle frame 1. The airtightness of the middle frame 1 is judged by detecting the change in gas pressure. The fixing function of the limiting member 11 ensures that the middle frame 1 will not shift due to pressure changes during the test, thereby maintaining the airtightness of the test environment and improving the accuracy of the test results.

[0110] Refer to Figure 8 , in some embodiments, the lower fixture member 2 proposed in the embodiment of the present application includes a flat plate portion 202 and a plurality of protruding portions 203. The top surface of the flat plate portion 202 is the support surface 200. The plurality of protruding portions 203 are arranged at intervals along the peripheral side of the flat plate portion 202. One end of the protruding portion 203 is connected to the support surface 200, and the other end is used to abut against the fitting surface 300; the height of each limiting member 11 is lower than the height of the protruding portion 203.

[0111] In this embodiment, the lower fixture member 2 includes a flat plate portion 202, whose top surface serves as the support surface 200, for abutting against the lower side of the middle frame 1 and closing the lower opening of the middle frame 1. A plurality of protruding portions 203 are arranged at intervals along the peripheral side of the flat plate portion 202. One end of the protruding portion 203 is connected to the support surface 200, and the other end faces the fitting surface 300 of the upper fixture member 3, for abutting against the fitting surface 300. One end of the limiting member 11 is connected to the support surface 200, enclosing a limiting space for placing the middle frame 1, and its height is lower than the height of the protruding portion 203.

[0112] The height of the protruding portion 203 is higher than that of the limiting member 11, so that it first contacts the fitting surface 300 of the upper fixture member 3 when the upper and lower fixture members 2 are closed, playing a supporting role, restricting the distance between the upper fixture member 3 and the lower fixture member 2, and forming a force-bearing interface between the fitting surface 300 and the support surface 200. When the upper fixture member 3 is pressed down, the middle frame 1 is firmly clamped just when the protruding portion 203 contacts the fitting surface 300.

[0113] The height of the limiting member 11 is lower than that of the protruding portion 203, ensuring that the limiting member 11 does not directly contact the fitting surface 300 when the upper and lower fixture members 2 are closed, but remains in the state of surrounding the side surface of the middle frame 1. The limiting member 11 forms a limiting space through surrounding, restricting the movement of the middle frame 1 in the horizontal direction and preventing the middle frame 1 from shifting due to external forces (such as the pressure of the test gas). This design enables the limiting member 11 to focus on the positioning of the middle frame 1 without undertaking the main vertical support or sealing function.

[0114] Referring Figure 6 and Figure 8 , in some embodiments, one of the fitting surface 300 and the protruding portion 203 proposed in the embodiments of the present application is recessed with an alignment groove 12, and the other of the fitting surface 300 and the protruding portion 203 is provided with an alignment rod 13 adapted to the alignment groove 12, and the alignment rod 13 can extend into the alignment groove 12.

[0115] In this embodiment, the alignment groove 12 and the alignment rod 13 are respectively provided on one of the fitting surface 300 and the protruding portion 203 (for example, if the fitting surface 300 is recessed with the alignment groove 12, then the protruding portion 203 is provided with the alignment rod 13, or vice versa). The alignment groove 12 is a concave structure, and the alignment rod 13 is a convex structure matching it, with adapted dimensions and shapes. The alignment rod 13 can extend into the alignment groove 12 to form a mechanical alignment relationship.

[0116] During the testing process, the upper fixture member 3 and the lower fixture member 2 need to be precisely closed to ensure tight contact between the fitting surface 300 and the support surface 200 and seal the upper and lower openings of the middle frame 1. When the alignment rod 13 extends into the alignment groove 12, it restricts the relative movement of the upper and lower fixture members 2 in the horizontal direction (parallel to the support surface 200), preventing the two from shifting or misaligning. This alignment function ensures the accurate alignment of the protruding portion 203 and the fitting surface 300 and maintains the airtightness of the testing space.

[0117] The cooperation between the alignment rod 13 and the alignment groove 12 provides additional mechanical constraints, enhancing the stability of the upper and lower fixture members 2 in the closed state. When the plugging driving member 5 drives the plugging member 6 to move, or when the test gas is introduced through the vent hole 201 to generate pressure, the alignment structure prevents the upper and lower fixture members 2 from separating or moving due to external forces, thus maintaining the fixed position of the middle frame 1.

[0118] Referring Figure 4 and Figure 8 , in some embodiments, the middle frame airtightness testing device of the mobile device proposed in the embodiments of the present application further includes:

[0119] A supporting driving member 14, provided on the lower fixture member 2;

[0120] A supporting member 15, provided at the output end of the supporting driving member 14, located outside the middle frame 1 and facing the plugging member 6;

[0121] Among them, the abutting driving member 14 is used to drive the abutting member 15 to move horizontally towards the middle frame 1 so as to abut against the outer side of the middle frame 1.

[0122] In this embodiment, the abutting driving member 14 (such as a cylinder or a motor) is arranged on the lower fixture member 2, and the abutting member 15 is connected to the output end of the abutting driving member 14, located outside the middle frame 1 and facing the blocking member 6. The abutting driving member 14 drives the abutting member 15 through its output end, so that the abutting member 15 can move towards the middle frame 1 along the horizontal direction (usually parallel to the support surface 200) until it abuts against the outer side of the middle frame 1.

[0123] The abutting driving member 14 drives the abutting member 15 to move horizontally, so that the abutting member 15 abuts against the outer wall of the middle frame 1 from the outside, the blocking member 6 blocks the functional hole 100 of the middle frame 1 from the inside, and the abutting member 15 abuts against the middle frame 1 from the outside, forming an internal and external collaborative fixing and supporting mechanism. When the plug 62 blocks the functional hole 100, the external abutting force provided by the abutting member 15 can balance the pressure of the plug 62 on the inner wall of the middle frame 1, preventing the middle frame 1 from shifting due to unidirectional force, thereby enhancing the stability of the blockage.

[0124] After the abutting member 15 fixes the middle frame 1, the upper and lower fixture members 2 close the upper and lower openings of the middle frame 1, the blocking member 6 blocks the functional hole 100, and the ventilation hole 201 introduces the test gas into the middle frame 1. The airtightness of the middle frame 1 is judged by detecting the change of the gas pressure. The abutting member 15 ensures the stable position of the middle frame 1 during the test through external clamping, maintaining the airtightness of the test environment.

[0125] The embodiments of the present application achieve the following beneficial effects by setting the above structure:

[0126] The abutting member 15 abuts against the middle frame 1 from the outside, providing an additional clamping force, restricting the movement of the middle frame 1 in the horizontal direction, preventing deviation caused by air pressure change or external force during the test, and ensuring the stability of the test result.

[0127] The abutting member 15 and the blocking member 6 form an internal and external collaborative fixing mechanism, balancing the pressure of the plug 62 on the inner wall of the middle frame 1 during blocking, reducing the risk of the middle frame 1 shifting due to unidirectional force, and improving the fitting degree and sealing effect of the blockage.

[0128] In summary, the abutting driving member 14 drives the abutting member 15 to move horizontally, abuts against the middle frame 1 from the outside, and forms a synergistic effect with the inner blocking of the plug 62. It can improve the stability of the middle frame 1 and enhance the reliability of the blockage. This design optimizes the fixing method of the middle frame 1 during the test, providing more reliable conditions for the airtightness test of the middle frame 1.

[0129] The above are only partial or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the overall concept of the present invention, or any direct / indirect application in other related technical fields is included in the scope of protection of the present invention.

Claims

1. An airtightness testing device for the middle frame of a mobile device, wherein the middle frame of the mobile device is arranged in a frame shape, the middle frame has opposite upper and lower openings, and is provided with at least one functional hole, and is characterized in that, The airtightness testing device includes: A lower fixture member having a support surface for abutting against the lower side of the middle frame and closing the lower opening; the lower fixture member is provided with a ventilation hole penetrating the support surface. An upper fixture member arranged in a flat plate shape and having a fitting surface for abutting against the upper side of the middle frame and closing the upper opening; a first installation groove is recessed in the fitting surface, and a connection hole communicating with the first installation groove is provided in the side wall of the upper fixture member. A connecting rod which is inserted into the connection hole. A plugging driving member arranged on the side wall of the upper fixture member, and the output end is connected to one end of the connecting rod. A plugging member, one end of which is located in the first installation groove and connected to the other end of the connecting rod, and the other end of the plugging member is exposed outside the first installation groove and located in the internal space formed between the middle frame and the support surface and the fitting surface. Wherein, the plugging driving member is used to drive the plugging member to move, so that one end of the plugging member exposed outside the first installation groove plugs or moves away from the functional hole, and the ventilation hole is used to introduce test gas into the interior of the middle frame to test the airtightness of the middle frame by detecting the change of gas pressure.

2. The airtightness testing device for the middle frame of the mobile device according to claim 1, characterized in that, The plugging member includes: A connecting member located in the first installation groove, and one end thereof is connected to the other end of the connecting rod. A plug head connected to the other end of the connecting member, exposed outside the first installation groove, and located in the internal space formed between the middle frame and the support surface and the fitting surface.

3. The airtightness testing device for the middle frame of the mobile device according to claim 2, wherein The plugging member further includes: A first adapter, one end of which is connected to the connecting member. A second adapter, one end of which is connected to the other end of the first adapter, and the other end is connected to the plug head. Wherein, the second adapter is inclined relative to the support surface.

4. The airtightness testing device for the middle frame of the mobile device according to claim 3, characterized in that, The fitting surface is further recessed with a second installation groove located between the first installation groove and the connection hole, and the second installation groove communicates with the first installation groove and the connection hole; the airtightness testing device for the middle frame of the mobile device further includes: A guiding member arranged in the second installation groove, and the guiding member is provided with a sliding track for at least part of the second adapter to slidably pass through, and the sliding track is inclined relative to the support surface.

5. The airtightness testing device for the middle frame of the mobile device according to claim 4, characterized in that A groove is formed on one side of the second adapter facing the guiding member, and the airtightness testing device for the middle frame of the mobile device further includes: An abutting plate arranged in the second installation groove and located on the side of the sliding track away from the second adapter. An elastic member, one end of which abuts against the bottom wall of the groove, and the other end abuts against the abutting plate.

6. The airtightness testing device for the middle frame of a mobile device according to any one of claims 2 to 5, characterized in that, The airtightness testing device for the middle frame of the mobile device further includes: A profiling member detachably connected to the fitting surface for filling the internal space formed between the middle frame and the support surface and the fitting surface. Wherein, the profiling member partially covers the first installation groove and the second installation groove, and is provided with an avoidance notch for the plug head to move.

7. The airtightness testing device for the middle frame of the mobile device according to claim 1, characterized in that, The airtightness testing device for the middle frame of the mobile device further includes: A plurality of limiting members, one end of which is connected to the support surface and the other end is arranged towards the fitting surface. Each of the limiting members and the support surface enclose a limiting space for placing the middle frame; the ventilation holes are located between the limiting members.

8. The airtightness testing device for the middle frame of a mobile device according to claim 7, wherein The lower fixture member includes a flat plate portion and a plurality of protruding portions. The top surface of the flat plate portion is the support surface, and the plurality of protruding portions are arranged at intervals along the peripheral side of the flat plate portion. One end of the protruding portion is connected to the support surface and the other end is used to abut against the fitting surface; the height of each of the limiting members is lower than the height of the protruding portion.

9. The airtightness testing device for the middle frame of the mobile device according to claim 8, characterized in that One of the fitting surface and the protruding portion is recessed with a positioning groove, and the other of the fitting surface and the protruding portion is provided with a positioning rod adapted to the positioning groove, and the positioning rod can extend into the positioning groove.

10. The airtightness testing device for the middle frame of the mobile device according to claim 1, characterized in that The middle frame airtightness testing device of the mobile device further includes: A holding driving member, which is arranged on the lower fixture member; A holding member, which is arranged at the output end of the holding driving member, is located outside the middle frame and is arranged towards the blocking member; Wherein, the holding driving member is used to drive the holding member to move horizontally towards the middle frame to abut against the outside of the middle frame.

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