Air tightness testing device

Abstract

The present invention discloses an airtightness testing device, which belongs to the technical field of airtightness testing. The airtightness testing device of the present invention includes a carrier, a first sealing mechanism, a pressure regulating mechanism and a detection mechanism. When performing an airtightness test, the housing of an electronic product is placed in a receiving groove of the carrier, the second sealing ring can abut against the screen mounting platform, and the first sealing ring can abut against the bottom surface of the sealing pressure plate, so that a first sealing cavity and a second sealing cavity can be formed between the carrier, the housing of the electronic product and the sealing pressure plate, and the two ends of the first mounting hole where the handset is installed are connected to the first sealing cavity and the second sealing cavity respectively, and then the pressure regulating mechanism is used to increase or decrease the air pressure in the first sealing cavity, and the detection mechanism is used to detect the air pressure change in the second sealing cavity to determine whether the airtightness of the handset installed in the first mounting hole meets the requirements. The airtightness testing device of the present invention is less affected by the appearance of the housing of the electronic product, can improve the sealing effect of the airtightness test, and has strong versatility.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness testing, and in particular to an air tightness testing device. Background Art

[0002] During the assembly process of a mobile phone, after the earpiece is assembled to the phone case, the air tightness of the earpiece needs to be tested. The commonly used method is the direct test method, that is, a sealing cover is directly installed on the outside of the earpiece, a sealed space is formed inside the seal, and air is blown into the sealed space to increase the air pressure in the sealed space. By detecting the change in air pressure in the sealed space, it is determined whether the cylinder is leaking.

[0003] As the screen size of mobile phones increases, the receiver is also integrated into the back shell of the phone. Since the joint surface between the back shell and the screen is irregular and narrow, the conventional direct test method is used to test the air tightness of the receiver. The following problems exist:

[0004] 1) The sealing effect is poor, affecting the accuracy of the airtightness test results.

[0005] 2) There are antennas at the four corners of the back shell of the mobile phone. The direct testing method needs to rely on the structural characteristics of the back shell of the mobile phone. Due to the existence of the antenna and the fact that the shell of each electronic product is different in size, the sealing effect is extremely unstable. Summary of the invention

[0006] The purpose of the present invention is to provide an airtightness testing device which can improve the sealing effect of airtightness testing and has strong versatility.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] An airtightness testing device is used to perform an airtightness test on a receiver disposed on an electronic product housing, wherein the electronic product housing is provided with a mounting groove, a screen mounting platform disposed around the mounting groove, and a first mounting hole connected to the mounting groove, the receiver is disposed in the first mounting hole and can seal the first mounting hole, and the airtightness testing device comprises:

[0009] A carrier, wherein a top surface of the carrier is provided with a receiving groove and a first sealing ring, the receiving groove is used to place the electronic product housing, and the first sealing ring is arranged around the circumference of the receiving groove;

[0010] A first sealing mechanism includes a sealing plate and a second sealing ring, wherein the sealing plate is configured to be buckled on the carrier so that the airtightness test device is in a sealed state in which the second sealing ring abuts against the screen mounting table and the first sealing ring abuts against the bottom surface of the sealing plate;

[0011] The airtightness testing device is configured such that when it is in the sealed state, a first sealed cavity and a second sealed cavity are formed between the carrier, the electronic product housing and the sealing platen, the first sealed cavity is located between the first sealing ring and the second sealing ring, the second sealed cavity is located inside the second sealing ring, the first end of the first mounting hole is in communication with the second sealed cavity, and the second end of the first mounting hole is in communication with the first sealed cavity;

[0012] A pressure regulating mechanism, used to increase or decrease the air pressure in the first sealed cavity;

[0013] The detection mechanism is used to detect the air pressure in the second sealed cavity.

[0014] As an optional solution of the airtightness testing device, the electronic product housing is provided with at least one second mounting hole connected to the mounting groove, and the airtightness testing device further comprises a second sealing mechanism arranged in a one-to-one correspondence with the second mounting hole;

[0015] The second sealing mechanism includes a blocking member and a blocking driving member, wherein the blocking driving member is used to drive the blocking member to move closer to or away from the corresponding second mounting hole to block or unblock the corresponding second mounting hole.

[0016] As an optional solution of the airtightness test device, the blocking member includes:

[0017] a blocking portion, the blocking portion being capable of docking with the corresponding second mounting hole to block the second mounting hole;

[0018] A connecting part, one end of which is detachably connected to the blocking part, and the other end of which is connected to the blocking driving member.

[0019] As an optional solution of the airtightness testing device, at least one of the second sealing mechanisms further includes an elastic member, and the elastic member is configured to make the blocking member always have a movement tendency to approach the electronic product housing.

[0020] As an optional solution of the air tightness testing device, the carrier is further provided with sliding holes arranged in a one-to-one correspondence with the blocking members, and the blocking members can be slidably disposed in the sliding holes and can seal the sliding holes.

[0021] As an optional solution of the air tightness testing device, the first sealing mechanism further includes an adapter plate, the second sealing ring is detachably mounted on the adapter plate, and the adapter plate is fixed to the bottom surface of the sealing pressure plate.

[0022] As an optional solution for the air tightness testing device, the carrier is further provided with a carrier plate, the carrier plate is fixedly mounted on a carrier plate mounting groove on the top surface of the carrier, and the receiving groove is opened on the top surface of the carrier plate.

[0023] As an optional solution of the air tightness test device, the air tightness test device further includes a frame, and the frame includes:

[0024] A bottom plate, the carrier is slidably arranged on the bottom plate in a horizontal direction, and the carrier can be locked or unlocked with the bottom plate by a carrier locking member;

[0025] A top plate is fixedly arranged above the bottom plate; a plurality of connecting members are arranged between the sealing pressure plate and the top plate, the top ends of the connecting members are slidably arranged on the top plate along the vertical direction, and the bottom ends of the connecting members are fixedly connected to the sealing pressure plate.

[0026] As an optional solution of the air tightness test device, the pressure regulating mechanism includes:

[0027] A pressure regulating pipeline, one end of which is in communication with the first sealed cavity, and the other end of which is used to be connected to a pressure regulating device;

[0028] A pressure regulating valve, arranged on the pressure regulating pipeline;

[0029] The first air pressure detection component is arranged in the pressure regulating pipeline and is located between the pressure regulating valve and the first sealing cavity.

[0030] As an optional solution of the air tightness testing device, the detection mechanism includes a detection pipeline and a second air pressure detection component, one end of the detection pipeline is connected to the second sealed cavity, and the other end is connected to the second air pressure detection component.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The airtightness testing device of the present invention, when performing an airtightness test, places the electronic product housing in the receiving groove of the carrier, the second sealing ring can abut against the screen mounting platform, and the first sealing ring can abut against the bottom surface of the sealing pressure plate, so that a first sealed cavity and a second sealed cavity can be formed between the carrier, the electronic product housing and the sealing pressure plate, and the two ends of the first mounting hole on which the earpiece is installed are connected to the first sealed cavity and the second sealed cavity respectively, and then the pressure regulating mechanism is used to increase or decrease the air pressure in the first sealed cavity, and the detection mechanism is used to detect the air pressure change in the second sealed cavity to determine whether the airtightness of the earpiece installed in the first mounting hole meets the requirements. Compared with the prior art, the airtightness testing device of the present invention is less affected by the appearance of the electronic product housing, can improve the sealing effect of the airtightness test, and has strong versatility, and can perform airtightness tests on electronic product housings of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of an electronic product housing in an embodiment of the present invention;

[0034] Figure 2 Schematic diagram of the connection relationship of the air tightness testing device in an embodiment of the present invention;

[0035] Figure 3 The structure of the airtightness test device in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 4 The structure of the airtightness test device in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 5 Schematic diagram of the structure of the top plate and the first sealing mechanism in an embodiment of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure after the carrier is installed into the housing of the electronic product in an embodiment of the present invention;

[0039] Figure 7 A schematic diagram of the structure of a carrier in an embodiment of the present invention;

[0040] Figure 8 is a cross-sectional view of a carrier in an embodiment of the present invention;

[0041] Fig. 9 A cross-sectional view of the sealing pressing plate and the carrier in abutment with each other in an embodiment of the present invention;

[0042] Fig.10 It is a partial cross-sectional view of the sealing pressing plate abutting against the carrier in the embodiment of the present invention.

[0043] Reference numerals:

[0044] 100, electronic product housing; 101, receiver; 102, mounting slot; 103, screen mounting platform; 104, side mounting hole; 105, bottom mounting hole; 106, antenna;

[0045] 1. Frame; 11. Bottom plate; 12. Top plate; 13. Support member; 14. Vertical plate; 141. Inlet and outlet;

[0046] 2. carrier; 21. receiving groove; 22. first sealing ring; 23. second positioning member; 24. carrier plate; 241. sliding hole;

[0047] 3. First sealing mechanism; 31. Sealing pressure plate; 311. Connecting member; 312. Second sealing ring; 313. First positioning member; 32. Pressure plate driving member; 33. Adapter plate;

[0048] 41. a first sealed cavity; 42. a second sealed cavity;

[0049] 5. pressure regulating mechanism; 51. pressure regulating pipeline; 52. pressure regulating valve; 53. first air pressure detection component;

[0050] 6. Detection mechanism; 61. Detection pipeline; 62. Second air pressure detection component;

[0051] 7. Second sealing mechanism; 71. Sealing member; 711. Sealing portion; 712. Connecting portion; 72. Sealing driving member; 73. Elastic member; 74. Connecting rod. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the housing of the electronic product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0059] like Figure 1-10 As shown, this embodiment provides an airtightness test device for testing the airtightness of a receiver 101 disposed on an electronic product housing 100. The electronic product housing 100 is provided with a mounting groove 102, a screen mounting platform 103 disposed around the mounting groove 102, and a first mounting hole connected to the mounting groove 102. The receiver 101 is disposed in the first mounting hole and can close the first mounting hole. In this embodiment, the electronic product housing 100 is a mobile phone back shell. In addition, the electronic product housing 100 can also be a housing of other electronic products such as a tablet computer.

[0060] It should be noted that, in this embodiment, the first mounting hole has a first end and a second end that are relatively arranged, the first mounting hole is arranged on the screen mounting platform 103, and the first end of the first mounting hole is located in the mounting groove 102, the handset 101 is fixedly mounted on the second end of the first mounting hole, and the handset 101 is connected to the mobile phone motherboard through a wiring harness, one end of the wiring harness is connected to the handset 101, and the other end passes through the first end of the first mounting hole and is connected to the mobile phone motherboard. Under normal circumstances, the handset 101 can close the first mounting hole, that is, the air tightness of the handset 101 meets the requirements. The air tightness test device of this embodiment is used to detect the air tightness of the handset 101.

[0061] like Figure 1 As shown, the receiver 101 is integrated into the back shell of the mobile phone. Since the joint surface between the back shell of the mobile phone and the screen is irregular and narrow, when the receiver 101 is tested for air tightness using the existing air tightness testing device, it is easy to have a poor sealing effect, which affects the accuracy of the air tightness test result. In addition, the antenna 106 set on the back shell of the mobile phone will also affect the sealing effect of the air tightness test.

[0062] In order to solve the above problems, the airtightness test device of this embodiment includes a frame 1, a carrier 2, a first sealing mechanism 3, a pressure regulating mechanism 5 and a detection mechanism 6. Among them, the frame 1 includes a bottom plate 11 and a top plate 12, and the top plate 12 is fixed above the bottom plate 11. For example, a plurality of support members 13 are provided between the top plate 12 and the bottom plate 11, and the two ends of the support members 13 are fixedly connected to the top plate 12 and the bottom plate 11 respectively.

[0063] The top surface of the carrier 2 is provided with a receiving groove 21 and a first sealing ring 22, and the first sealing ring 22 is arranged around the circumference of the receiving groove 21. The receiving groove 21 is used to place the electronic product housing 100.

[0064] The first sealing mechanism 3 includes a sealing platen 31 and a second sealing ring 312. The sealing platen 31 is configured to be buckled onto the carrier 2 so that the airtightness testing device is in a sealed state in which the second sealing ring 312 can abut against the screen mounting platform 103 and the first sealing ring 22 can abut against the bottom surface of the sealing platen 31. When the airtightness testing device is configured to be in a sealed state, a first sealing cavity 41 and a second sealing cavity 42 are formed between the carrier 2, the electronic product housing 100 and the sealing platen 31. The first sealing cavity 41 is located between the first sealing ring 22 and the second sealing ring 312, the second sealing cavity 42 is located on the inner side of the second sealing ring 312, the first end of the first mounting hole is located on the inner side of the second sealing ring 312, and the second end of the first mounting hole is located between the second sealing ring 312 and the first sealing ring 22.

[0065] The pressure regulating mechanism 5 is used to increase the air pressure in the first sealed cavity 41 . The detecting mechanism 6 is used to detect the air pressure in the second sealed cavity 42 .

[0066] When performing an airtightness test, the electronic product housing 100 is placed in the receiving groove 21 of the carrier 2, and a first sealed cavity 41 and a second sealed cavity 42 are formed between the carrier 2, the electronic product housing 100 and the sealing pressure plate 31 through the first sealing ring 22 and the second sealing ring 312, and the two ends of the first mounting hole on which the earpiece 101 is installed are connected to the first sealed cavity 41 and the second sealed cavity 42 respectively, and then the pressure regulating mechanism 5 is used to increase the air pressure in the first sealed cavity 41, and the detection mechanism 6 is used to detect the air pressure change in the second sealed cavity 42 to determine whether the airtightness of the earpiece 101 installed in the first mounting hole meets the requirements. Compared with the prior art, the airtightness testing device of this embodiment is less affected by the shape of the electronic product housing 100, can improve the sealing effect of the airtightness test, and has strong versatility.

[0067] Optionally, the carrier 2 is slidably arranged on the bottom plate 11 in the horizontal direction, so as to facilitate the placement of the electronic product housing 100. In the present embodiment, the airtightness testing device further comprises a carrier driving assembly, and the carrier driving assembly comprises a carrier driving member and two slide rails, the two slide rails are mounted on the bottom plate 11, and the carrier 2 is slidably connected to the bottom plate 11 via the two slide rails, and the carrier driving member can drive the carrier 2 to slide along the slide rails. A vertical plate 14 is also provided on one side of the frame 1, and the upper and lower ends of the vertical plate 14 are respectively fixedly connected to the top plate 12 and the bottom plate 11, and an inlet and outlet 141 is provided on the vertical plate 14, and the carrier 2 slides along the slide rails and can pass through the inlet and outlet 141. The provision of the vertical plate 14 can make the appearance of the airtightness testing device neater and has a protective effect.

[0068] Optionally, the carrier 2 can be locked or unlocked with the base plate 11 by a carrier locking member to ensure that the carrier 2 does not shift during the air tightness test to avoid affecting the test. Exemplarily, the carrier locking member is a bolt, and the carrier 2 is locked with the base plate 11 by bolts, which is easy to operate and low in cost.

[0069] Optionally, the sealing platen 31 is located above the carrier 2, and the sealing platen 31 is mounted on the top plate 12. A plurality of connectors 311 are provided between the sealing platen 31 and the top plate 12. The top ends of the connectors 311 are slidably provided on the top plate 12 along the vertical direction, and the bottom ends of the connectors 311 are fixedly connected to the sealing platen 31, thereby improving the movement stability of the sealing platen 31. The second sealing ring 312 is provided on the bottom surface of the sealing platen 31, and the second sealing ring 312 matches the shape and size of the screen mounting platform 103 to ensure sealing.

[0070] Optionally, the first sealing mechanism 3 further includes a pressure plate driving member 32, which can drive the sealing pressure plate 31 to move along the first direction to approach the carrier 2, so that the sealing pressure plate 31 is buckled on the carrier 2, so that the second sealing ring 312 can abut against the screen mounting platform 103, and the first sealing ring 22 can abut against the bottom surface of the sealing pressure plate 31. Exemplarily, the pressure plate driving member 32 is a cylinder with low cost.

[0071] Optionally, the sealing platen 31 is provided with a plurality of first positioning members 313, and the carrier 2 is provided with a second positioning member 23 arranged in a one-to-one correspondence with the plurality of first positioning members 313. The first positioning member 313 can be plugged into the corresponding second positioning member 23 to ensure that the relative positions of the sealing platen 31 and the carrier 2 remain unchanged when the sealing platen 31 abuts against the carrier 2, which is beneficial to improving the sealing effect of the airtightness testing device. Exemplarily, one of the first positioning member 313 and the second positioning member 23 is a latch, and the other is a slot, and the latch can be inserted into the slot to limit the relative movement of the sealing platen 31 and the carrier 2 in the horizontal direction. In this embodiment, the first positioning member 313 is a latch, and the second positioning member 23 is a slot.

[0072] Optionally, the first sealing mechanism 3 further includes an adapter plate 33, the second sealing ring 312 is detachably mounted on the adapter plate 33, and the adapter plate 33 is fixed to the bottom surface of the sealing plate 31. When it is necessary to perform airtightness tests on electronic product housings 100 of different models, only the adapter plate 33 and the second sealing ring 312 need to be replaced, without replacing the sealing plate 31, which is beneficial to reducing costs and helping to improve the versatility of the airtightness testing device.

[0073] Exemplarily, the adapter plate 33 is fixed to the bottom surface of the sealing pressure plate 31 by fasteners such as screws. The bottom surface of the adapter plate 33 is provided with a sealing groove matching the structure of the second sealing ring 312. The second sealing ring 312 is snapped into the sealing groove to facilitate replacement of the second sealing ring 312 and the adapter plate 33.

[0074] Optionally, the carrier 2 is further provided with a carrier plate 24, which is fixedly mounted in a carrier plate mounting groove on the top surface of the carrier 2 by means of fasteners such as screws, and the top surface of the carrier plate 24 is lower than the top surface of the carrier 2, and the receiving groove 21 is opened on the top surface of the carrier plate 24. When it is necessary to perform airtightness tests on mobile phone back shells of different sizes, only the carrier plate 24 needs to be replaced without replacing the carrier 2, which is conducive to reducing costs and helping to improve the versatility of the airtightness testing device.

[0075] The electronic product housing 100 is provided with a plurality of second mounting holes connected to the mounting slot 102. Specifically, the plurality of second mounting holes include side mounting holes 104 (such as button mounting holes, charging sockets, etc.) provided on the peripheral side of the electronic product housing 100 and bottom mounting holes 105 (such as camera mounting holes, etc.) provided on the bottom of the electronic product housing 100. Figure 1 As shown, the back shell of the mobile phone in this embodiment is provided with an earpiece 101, three groups of side mounting holes 104 and a bottom mounting hole 105, each group includes one or more side mounting holes 104, wherein the earpiece 101 is arranged on the top side of the back shell of the mobile phone, the first group of side mounting holes 104 is arranged on the left side of the back shell of the mobile phone, the second group of side mounting holes 104 is arranged on the right side of the back shell of the mobile phone, and the third group of side mounting holes 104 is arranged on the bottom side of the back shell of the mobile phone.

[0076] When performing an air tightness test on the handset 101, it is necessary to completely seal the above-mentioned second mounting holes, and the air tightness testing device also includes a second sealing mechanism 7 that is arranged one-to-one with the plurality of second mounting holes; the second sealing mechanism 7 includes a blocking member 71 and a blocking driving member 72, and the blocking driving member 72 is used to drive the blocking member 71 to move closer to or away from the corresponding second mounting hole to block or unblock the corresponding second mounting hole. It should be noted that the plurality of blocking members 71 are respectively matched with the hole type and size of the corresponding side mounting hole 104 or bottom mounting hole 105 to ensure that each side mounting hole 104 and bottom mounting hole 105 can be blocked by the corresponding blocking member 71 to ensure sealing. Exemplarily, the blocking driving member 72 is a cylinder, which is low in cost.

[0077] Since the sealing member 71 used to seal the bottom mounting hole 105 is easily moved downward under the action of gravity, resulting in a loose sealing of the bottom mounting hole 105, in order to solve this problem, at least one second sealing mechanism 7 also includes an elastic member 73, that is, the second sealing mechanism 7 corresponding to the above-mentioned bottom mounting hole 105 includes an elastic member 73, and the elastic member 73 is configured to make the sealing member 71 always have a movement tendency close to the electronic product housing 100, thereby ensuring that under the elastic force of the elastic member 73, the sealing member 71 can always be tightly pressed against the electronic product housing 100 to ensure sealing.

[0078] In this embodiment, Figure 7 and Figure 8 As shown, in the second sealing mechanism 7 corresponding to the bottom mounting hole 105, the blocking member 71 is connected to the blocking driving member 72 through a connecting rod 74, the bottom end of the connecting rod 74 is fixedly connected to the blocking driving member 72, and the top end of the connecting rod 74 is slidably connected to the blocking member 71, so that the blocking member 71 can slide up and down along the axial direction of the connecting rod 74, and the elastic member 73 is a compression spring, which is sleeved on the outside of the connecting rod 74, and the bottom end of the compression spring is fixedly connected to the connecting rod 74, and the top end of the compression spring abuts against the blocking member 71, and then the resetting elastic force of the compression spring can be used to make the blocking member 71 always abut against the electronic product housing 100. Optionally, one of the connecting rod 74 and the blocking member 71 is provided with a slide groove, and the other is provided with a slider, and the slider is slidably connected in the slide groove, so that the two form a sliding connection. In this embodiment, the slide groove is provided on the bottom surface of the blocking member 71, and the slider is provided on the top end of the connecting rod 74. The slider is inserted into the slide groove and can slide in the slide groove along the vertical direction.

[0079] Optionally, the blocking member 71 includes a blocking portion 711 and a connecting portion 712, and the blocking portion 711 can be docked with the corresponding second mounting hole to block the second mounting hole; illustratively, the blocking portion 711 can be inserted into the corresponding second mounting hole or sleeved on the outer side of the corresponding second mounting hole end. One end of the connecting portion 712 is detachably connected to the blocking portion 711, and the other end is connected to the blocking drive member 72. The blocking portion 711 is connected to the connecting portion 712 in a detachable manner, which is convenient for replacing different blocking portions 711 according to different models of the electronic product housing 100, and is conducive to expanding the versatility of the airtightness testing device. Exemplarily, the blocking portion 711 is plugged or snapped with the connecting portion 712, and the connecting portion 712 is connected to the blocking drive member 72. When the blocking portion 711 needs to be replaced, it is only necessary to unplug the original blocking portion 711 and then plug in or snap on the new blocking portion 711, which is simple to operate.

[0080] Optionally, the sealing portion 711 is made of elastic materials such as rubber, which is beneficial to improving the sealing performance.

[0081] In this embodiment, the size of the receiving groove 21 matches the size of the electronic product housing 100, and the carrier plate 24 is provided with sliding holes 241 corresponding to the plurality of blocking members 71, and the blocking members 71 are slidably disposed in the sliding holes 241 and can seal the sliding holes 241. Exemplarily, a sealing member such as a sealing ring is sleeved on the outer side of the portion of the blocking member 71 located in the sliding hole 241 to seal the sliding hole 241.

[0082] It should be noted that the blocking member 71 and the first sealing ring 22 are integrated on the carrier 2, which has a compact structure, good sealing performance, and greatly reduces the occupied space. The blocking drive member 72 and the carrier drive member are integrated on the frame 1, which can also further reduce the occupied space.

[0083] Alternatively, if Figure 1 , Fig. 9 and Fig.10 As shown, the pressure regulating mechanism 5 includes a pressure regulating pipeline 51, a pressure regulating valve 52 and a first air pressure detection component 53. One end of the pressure regulating pipeline 51 is used to connect with a pressure regulating device, such as an air compressor, and the other end is connected with the first sealed cavity 41 to pass the air compressed by the air compressor into the first sealed cavity 41 to increase the air pressure in the first sealed cavity 41. The pressure regulating valve 52 is arranged on the pressure regulating pipeline 51, which is convenient for accurately controlling the pressure of the gas passing into the first sealed cavity 41. The first air pressure detection component 53 is arranged on the pressure regulating pipeline 51 and is located between the pressure regulating valve 52 and the first sealed cavity 41, which is convenient for real-time monitoring of whether the air pressure in the first sealed cavity 41 is maintained at a preset air pressure (such as 0.2 bar), which is conducive to improving the accuracy of the air tightness test results.

[0084] Optionally, the pressure regulating valve 52 is electrically connected to the first air pressure detection member 53, so that the pressure regulating valve 52 can adjust the opening according to the detection result of the first air pressure detection member 53. When the air pressure measured by the first air pressure detection member 53 is less than the preset air pressure, the pressure regulating valve 52 can be controlled to increase the opening so that the air pressure in the first sealed cavity 41 rises to the preset air pressure; when the air pressure measured by the first air pressure detection member 53 is greater than the preset air pressure, the pressure regulating valve 52 can be controlled to decrease the opening so that the air pressure in the first sealed cavity 41 drops to the preset air pressure.

[0085] Exemplarily, the first air pressure detection member 53 is an air tightness detector, which can accurately measure the air pressure change in the first sealed cavity 41. In other embodiments, the second air pressure detection member 62 can also be a pressure gauge, a pressure sensor, etc., which has a simple structure and low cost.

[0086] Optionally, the detection mechanism 6 includes a detection pipeline 61 and a second air pressure detection member 62, one end of the detection pipeline 61 is connected to the second sealed cavity 42, and the other end is connected to the second air pressure detection member 62. Exemplarily, the second air pressure detection member 62 is an air tightness detector, which can accurately measure the air pressure change in the second sealed cavity 42. If the measured air pressure increases, it means that the air tightness of the earpiece 101 is unqualified; if the measured air pressure does not change, it means that the air tightness of the earpiece 101 is qualified. In other embodiments, the second air pressure detection member 62 can also be a pressure gauge, a pressure sensor, etc., which has a simple structure and low cost.

[0087] Optionally, the detection pipeline 61 and the pressure regulating pipeline 51 both include a first pipeline section and a second pipeline section connected to the first pipeline section, wherein the first pipeline section is a channel opened inside the sealing platen 31, and the second pipeline section is a solid tube body such as a hose, so as to extend the length of the detection pipeline 61 for connection with the second air pressure detection component 62; extend the length of the pressure regulating pipeline 51 for connection with the pressure regulating device. Of course, the detection pipeline 61 and the pressure regulating pipeline 51 can also be all set as solid tube bodies, or all set as channels opened inside the sealing platen 31, which is not limited here.

[0088] In other embodiments, the first sealed cavity 41 may be evacuated by the pressure regulating mechanism 5 to reduce the air pressure in the first sealed cavity 41, and the detection mechanism 6 may be used to detect the change in the air pressure in the second sealed cavity 42 to determine whether the airtightness of the earpiece 101 meets the requirements. Exemplarily, the pressure regulating mechanism 5 is a vacuum pump, and one end of the pressure regulating pipeline 51 is connected to the vacuum pump, and the other end is connected to the first sealed cavity 41, so as to evacuate the first sealed cavity 41.

[0089] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An airtightness testing device, used for performing an airtightness test on a receiver (101) arranged on an electronic product housing (100), wherein the electronic product housing (100) is provided with a mounting groove (102), a screen mounting platform (103) arranged around the mounting groove (102), and a first mounting hole connected to the mounting groove (102), wherein the receiver (101) is arranged in the first mounting hole and can seal the first mounting hole. It is characterized in that The airtightness testing device comprises: A carrier (2), wherein a top surface of the carrier (2) is provided with a receiving groove (21) and a first sealing ring (22), the receiving groove (21) being used to place the electronic product housing (100), and the first sealing ring (22) being arranged around the circumference of the receiving groove (21); A first sealing mechanism (3), comprising a sealing plate (31) and a second sealing ring (312), wherein the sealing plate (31) is configured to be buckled onto the carrier (2) so that the airtightness testing device is in a sealed state in which the second sealing ring (312) abuts against the screen mounting platform (103) and the first sealing ring (22) abuts against the bottom surface of the sealing plate (31); The airtightness testing device is configured such that when it is in the sealed state, a first sealed cavity (41) and a second sealed cavity (42) are formed between the carrier (2), the electronic product housing (100) and the sealing plate (31), the first sealed cavity (41) is located between the first sealing ring (22) and the second sealing ring (312), the second sealed cavity (42) is located inside the second sealing ring (312), the first end of the first mounting hole is in communication with the second sealed cavity (42), and the second end of the first mounting hole is in communication with the first sealed cavity (41); A pressure regulating mechanism (5) for increasing or decreasing the air pressure in the first sealed cavity (41); A detection mechanism (6) for detecting the air pressure in the second sealed cavity (42); the detection mechanism (6) is used to detect the change in the air pressure in the second sealed cavity (42) to determine whether the air tightness of the earpiece (101) installed in the first installation hole meets the requirements; The first sealing mechanism (3) further comprises an adapter plate (33), the second sealing ring (312) is detachably mounted on the adapter plate (33), and the adapter plate (33) is fixedly mounted on the bottom surface of the sealing pressure plate (31); The carrier (2) is further provided with a carrier plate (24), the carrier plate (24) being fixedly mounted on a carrier plate mounting groove on the top surface of the carrier (2), and the receiving groove (21) being opened on the top surface of the carrier plate (24); When it is necessary to perform airtightness tests on electronic product housings (100) of different models, it is only necessary to replace the adapter plate (33), the second sealing ring (312) and the carrier plate (24).

2. The airtightness testing device according to claim 1, wherein the electronic product housing (100) is provided with at least one second mounting hole connected to the mounting groove (102), It is characterized in that The air tightness testing device further comprises a second sealing mechanism (7) arranged in one-to-one correspondence with the second mounting holes; The second sealing mechanism (7) comprises a blocking member (71) and a blocking driving member (72), wherein the blocking driving member (72) is used to drive the blocking member (71) to move closer to or farther away from the corresponding second mounting hole, so as to block or unblock the corresponding second mounting hole.

3. The airtightness testing device according to claim 2, It is characterized in that The blocking member (71) comprises: A blocking portion (711), the blocking portion (711) being capable of docking with the corresponding second mounting hole to block the second mounting hole; A connecting part (712), one end of which is detachably connected to the blocking part (711), and the other end of which is connected to the blocking driving member (72).

4. The airtightness testing device according to claim 2, It is characterized in that At least one of the second sealing mechanisms (7) further comprises an elastic member (73), wherein the elastic member (73) is configured to ensure that the blocking member (71) always has a movement tendency to approach the electronic product housing (100).

5. The airtightness testing device according to claim 2, It is characterized in that The carrier (2) is also provided with sliding holes (241) arranged in one-to-one correspondence with the blocking member (71); the blocking member (71) can be slidably arranged in the sliding hole (241) and can seal the sliding hole (241).

6. The airtightness testing device according to claim 1, It is characterized in that The air tightness testing device further comprises a frame (1), wherein the frame (1) comprises: A base plate (11), the carrier (2) being slidably arranged on the base plate (11) in a horizontal direction, and the carrier (2) being able to be locked or unlocked with the base plate (11) via a carrier locking member; A top plate (12) is fixedly arranged above the bottom plate (11); a plurality of connecting members (311) are arranged between the sealing pressure plate (31) and the top plate (12); the top ends of the connecting members (311) are slidably arranged on the top plate (12) along a vertical direction, and the bottom ends of the connecting members (311) are fixedly connected to the sealing pressure plate (31).

7. The airtightness testing device according to claim 1, It is characterized in that The pressure regulating mechanism (5) comprises: A pressure regulating pipeline (51), one end of the pressure regulating pipeline (51) being in communication with the first sealed cavity (41), and the other end of the pressure regulating pipeline (51) being used for connecting with a pressure regulating device; A pressure regulating valve (52), arranged on the pressure regulating pipeline (51); A first air pressure detection component (53) is provided in the pressure regulating pipeline (51) and is located between the pressure regulating valve (52) and the first sealed cavity (41).

8. The airtightness testing device according to claim 1, It is characterized in that The detection mechanism (6) comprises a detection pipeline (61) and a second air pressure detection component (62); one end of the detection pipeline (61) is in communication with the second sealed cavity (42), and the other end is connected to the second air pressure detection component (62).

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