Mobile phone screen sealing test fixture

Abstract

The utility model relates to the field of mobile phone waterproofing, and provides a mobile phone screen sealing test fixture. The mobile phone screen sealing test jig comprises a lower die with a concave part, a sealing rubber ring and a profiling block, the sealing rubber ring is arranged on the edge of an opening of the concave part in a sleeving mode, a rubber frame is connected with the concave part through the sealing rubber ring, the concave part, the sealing rubber ring, the rubber frame and a screen form a test cavity, and an air inlet channel is formed in the concave part. The shape of the profiling block is matched with the outline of the rubber frame, and the profiling block is used for abutting against the rubber frame so that the rubber frame and the sealing rubber ring can be tightly pressed. The external equipment inflates the test cavity through the air inlet channel, so that the screen does not extrude the rubber frame when the sealing performance of the bonded rubber frame and the screen is tested, the test cavity leaks air when the sealing performance of the screen and the rubber frame is poor, and the test equipment can test that the sealing performance of the screen and the rubber frame is poor. The mobile phone screen sealing test fixture is accurate in test, and prevents defective products of the bonded rubber frame and the screen from being mistakenly tested and entering the next assembly link of a mobile phone production line.

Description

Technical Field

[0001] This disclosure relates to the field of mobile phone waterproofing, and more particularly to a mobile phone screen sealing test fixture. Background Technology

[0002] When mobile phones and other electronic products are used in humid environments, substandard waterproofing will affect their normal function. Therefore, sealing tests are required for each component during the assembly process of a mobile phone.

[0003] The sealing of the mobile phone screen is mainly achieved through the bonding of the screen and the frame with sealant. However, during actual production and assembly, factors such as adhesive detachment during the dispensing process can cause sealing abnormalities, resulting in poorly sealed products. Therefore, a sealing test is necessary at the joint between the mobile phone screen and the frame after the dispensing process.

[0004] In related technologies, defective products, when subjected to pressure during testing, form a sealed cavity between the screen and the frame, resulting in products with poor adhesion between the screen and the frame being tested as good products under pressure. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this disclosure provides a mobile phone screen sealing test fixture.

[0006] This disclosure provides a mobile phone screen sealing test fixture, including a lower mold with a recess, wherein an air intake channel is formed in the recess;

[0007] A sealing ring is fitted onto the opening edge of the recess, and the frame is connected to the recess through the sealing ring. The recess, the sealing ring, the frame, and the screen form a test cavity.

[0008] A contour block, the shape of which matches the outline of the rubber frame, is used to abut against the rubber frame to press the rubber frame tightly against the sealing ring.

[0009] Optionally, the contour block includes multiple split structures, which are distributed at circumferential intervals along the recess;

[0010] And / or, the contour block is provided with ventilation holes.

[0011] Optionally, the mobile phone screen sealing test fixture further includes an upper mold, which is connected to the contour block.

[0012] Optionally, a positioning post is provided between the lower mold and the upper mold, and the positioning post extends along the thickness direction of the lower mold;

[0013] The positioning post is connected to the upper mold, and the lower mold is provided with a positioning hole for cooperating with the positioning post. The positioning post can extend into the positioning hole so that the contour block abuts against and is pressed against the rubber frame.

[0014] Optionally, the sealing ring has a plurality of protrusions extending radially, and the sidewalls of the recesses have a plurality of grooves formed by radial recesses, wherein the plurality of protrusions and the plurality of grooves are matched one-to-one.

[0015] Optionally, the sealing ring has a first end and a second end opposite each other along the length direction of the lower mold, and the number of protrusions at the first end is different from the number of protrusions at the second end.

[0016] Optionally, the sealing ring has a first surface and a second surface opposite to each other along the thickness direction of the lower mold, the first surface being connected to the recess and the second surface being used to abut against the rubber frame;

[0017] A portion of the second surface protrudes away from the first surface along the thickness direction of the lower mold, forming a raised ridge.

[0018] Optionally, a limiting portion is provided on the upper surface of the lower mold around the recess.

[0019] Optionally, the mobile phone screen sealing test fixture further includes a lower mold base, wherein the lower mold is connected to the lower mold base;

[0020] The lower mold base is provided with a sealing element, and the sealing element is slidably connected to the lower mold base;

[0021] The seal has a plug for sealing the hole in the rubber frame.

[0022] Optionally, the seal is slidably connected to the lower mold base via a slide rail slider assembly;

[0023] The slide rail and slider assembly includes a slide rail disposed along the length direction of the lower mold and a slider slidably connected to the slide rail. The slide rail is connected to the lower mold base, and the slider has a connecting surface that is connected to the seal.

[0024] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0025] The mobile terminal shooting cabinet provided in this embodiment features a recess, a sealing ring connected to the recess, and a contoured block whose shape matches the outline of the frame. The contoured block compresses the recess, sealing ring, frame, and screen to form a test chamber. An air intake channel is formed within the recess, allowing external equipment to inflate the test chamber. This prevents the screen from compressing the frame during sealing performance testing. If the seal between the screen and frame is poor, the test chamber will leak air, allowing the testing equipment to detect inadequate sealing. This mobile phone screen sealing test fixture provides accurate testing, preventing defective frames and screens from being mistakenly tested and entering the next assembly stage of the mobile phone production line. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a partial structural schematic diagram of the mobile phone screen sealing test fixture described in an embodiment of this disclosure;

[0029] Figure 2 This is a three-dimensional structural diagram of the mobile phone screen sealing test fixture described in the embodiments of this disclosure. Figure 1 ;

[0030] Figure 3 A three-dimensional structural diagram showing the connection between the lower mold and the sealing ring;

[0031] Figure 4 This is a three-dimensional structural diagram of the mobile phone screen sealing test fixture described in the embodiments of this disclosure. Figure 2 ;

[0032] Figure 5 This is a three-dimensional structural diagram of the mobile phone screen sealing test fixture described in the embodiments of this disclosure. Figure 3 .

[0033] Among them, 1. lower mold; 11. recess; 12. limiting part;

[0034] 13. First pore; 14. Second pore;

[0035] 2. Sealing ring; 21. Protrusion; 22. First end; 23. Second end; 24. Rib;

[0036] 3. Upper mold; 4. Profiling block; 5. Positioning pin; 6. Lower mold base;

[0037] 7. Seals; 81. Slide rails; 82. Slider; 9. Frame; 10. Screen. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0039] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0040] Communication electronic products have brought convenience to people's lives, and people are increasingly relying on them. Communication electronic products are required to have good sealing performance so that they can be used in humid environments where they need to have good waterproof performance.

[0041] The mobile phone includes a frame 9 and a screen 10 bonded to the frame 9. The frame 9 is the phone's bezel. During mobile phone assembly and production, the sealing performance of the bonded frame and screen needs to be tested. For ease of description, the bonded frame and screen will be referred to as the test product below. In related technologies, when using a mobile phone screen sealing test fixture to test the test product, the test product is located between the lower mold 1 and the upper mold 3. The upper mold 3 compresses the test product to form a sealed cavity with the lower mold 1. The inventors discovered that this method causes the screen 10 and the frame 9 to be compressed, resulting in defective products with poor adhesion between the screen 10 and the frame 9 being able to seal after being compressed. Consequently, the test results are mistakenly measured as good products with good sealing performance.

[0042] Therefore, this application provides a mobile phone screen sealing test fixture, which is suitable for testing the sealing performance of the product. The mobile phone includes a frame 9 and a screen 10 bonded to the frame 9.

[0043] like Figures 1 to 5 As shown, this application provides a mobile phone screen sealing test fixture, including a lower mold 1 with a recess 11, a sealing ring 2, and a contour block 4. The sealing ring 2 is fitted onto the opening edge of the recess 11, and the frame 9 is connected to the recess 11 through the sealing ring 2. The recess 11, the sealing ring 2, the frame 9, and the screen 10 form a test cavity.

[0044] The shape of the contour block 4 matches the contour of the rubber frame 9, and the contour block 4 is used to abut against the rubber frame 9 to press the rubber frame 9 tightly against the sealing ring 2. In specific implementation, as follows... Figure 5 As shown, a stepped portion is formed on the contour block 4. The protruding surface of the stepped portion is used to abut against the frame 9, and there is a gap between the concave surface of the stepped portion and the screen, which is 0.3mm-0.5mm.

[0045] An air intake channel is formed within the recess 11, such as Figure 3 and Figure 4 As shown, the first air hole 13 of the air inlet channel is located on the outer wall of the lower mold, and the second air hole 14 of the air inlet channel is located on the inner wall of the recess. The first air hole 13 is used to connect to the air source of the testing equipment. The air source of the testing equipment inflates through the first air hole 13, and the gas enters the testing chamber through the second air hole 14 via the air inlet channel. The external equipment inflates the testing chamber through the air inlet channel. After inflation, the testing equipment tests the air pressure inside the testing chamber. The testing of the air pressure inside the testing chamber is a technique well known to those skilled in the art and will not be described in detail here.

[0046] The mobile phone screen sealing test fixture provided in this application, during use, involves an upper mold moving towards a lower mold under external force. The upper mold then moves a contour block towards the lower mold. The contour block is equipped with a pressure sensor; when the contour block presses down on the rubber frame until it is tightly compressed, the pressure value is the target pressure value. The pressure sensor transmits the collected pressure data between the contour block and the rubber frame to a controller. Specifically, a telescopic cylinder drives the upper mold towards the lower mold. The telescopic cylinder is electrically connected to the controller, which controls the movement of the telescopic cylinder based on the data collected by the pressure sensor.

[0047] During the test, the test product is placed on the sealing ring, and the controller sends a control command to the telescopic cylinder. The telescopic cylinder drives the upper mold to move towards the lower mold. When the controller receives data from the pressure sensor that the target pressure value has been reached, the controller controls the telescopic cylinder to stop driving. The air source of the test equipment is inflated into the test chamber through the air intake channel.

[0048] The mobile phone screen sealing test fixture provided in this application, by setting a recess 11, a sealing ring 2 connected to the recess 11, and a contour block 4 whose shape matches the contour of the frame 9, allows the recess 11, sealing ring 2, frame 9, and screen 10 to form a test cavity after the contour block 4 compresses the frame 9. An air intake channel is formed within the recess 11, through which external equipment inflates the test cavity. This ensures that the screen 10 does not compress the frame 9 during the sealing performance test. When the sealing performance between the screen 10 and the frame 9 is poor, the test cavity will leak air, and the testing equipment can detect poor sealing performance between the screen 10 and the frame 9. The mobile phone screen sealing test fixture provides accurate testing, preventing defective products from being mistakenly tested and entering the next assembly stage of the mobile phone production line.

[0049] For example, the sealing ring 2 can be a silicone ring or a bakelite plastic ring, and the hardness of the sealing ring 2 is between 30 and 50 degrees. The sealing ring 2 and the recess 11 are interference-fitted, and the interference amount of the interference fit is 0.05mm-0.1mm.

[0050] Considering that if the sealing performance between the frame 9 and the screen 10 is poor, after the test chamber is continuously inflated, the gas will flow through the gap between the frame 9 and the screen 10 to the space between the contour block 4 and the screen 10, causing a sealed cavity to form between the contour block 4 and the screen 10, thus pressing the screen 10 downwards and making the screen 10 and the frame 9 tightly pressed together. Therefore, if... Figure 2 and Figure 5 As shown, in some embodiments, the contour block 4 includes multiple split structures that are spaced apart circumferentially along the recess 11. This arrangement allows airflow between the contour block 4 and the screen 10 to be discharged through the gap between two adjacent split structures.

[0051] Of course, ventilation holes can also be provided on the contour block 4 to facilitate processing and simplify assembly.

[0052] refer to Figure 1 and Figure 4 The mobile phone screen sealing test fixture provided in this application also includes an upper mold 3, which is connected to a contour block 4. In specific implementation, the upper mold 3 and the contour block 4 can be connected by fasteners.

[0053] In some embodiments, a positioning post 5 is provided between the lower mold 1 and the upper mold 3, extending along the thickness direction of the lower mold 1. The positioning post 5 is connected to the upper mold 3, and the lower mold 1 is provided with a positioning hole for engaging with the positioning post 5. The positioning hole has a certain depth, allowing the positioning post 5 to extend into the positioning hole so that the contour block 4 moves vertically downward until it abuts against the rubber frame 9 and is then pressed tightly. A copper sleeve may be provided in the positioning hole, with the positioning post 5 and the copper sleeve in a clearance fit. The clearance between the positioning post 5 and the copper sleeve is 0.03mm-0.05mm to avoid wear between the positioning post and the positioning hole. The copper sleeve has high wear resistance, which improves the lifespan of the mobile phone screen sealing test fixture.

[0054] In some embodiments, such as Figure 3 As shown, the sealing ring 2 has multiple protrusions 21 extending radially, and the sidewall of the recess 11 has multiple grooves formed radially recessed, with the multiple protrusions 21 and the multiple grooves corresponding to each other. This makes the connection between the sealing ring 2 and the recess 11 more stable, and prevents the sealing ring 2 from arching and detaching from the recess 11 after the rubber frame 9 detaches from the sealing ring 2.

[0055] In some embodiments, the sealing ring 2 has a first end 22 and a second end 23 opposite each other along the length direction of the lower mold 1, and the number of protrusions 21 on the first end 22 is different from the number of protrusions 21 on the second end 23. This prevents operators from installing the sealing ring 2 with the recess 11 in the wrong orientation.

[0056] In some embodiments, the sealing ring 2 has a first surface and a second surface opposite to each other along the thickness direction of the lower mold 1. The first surface is connected to the recess 11, and the second surface is used to abut against the frame 9. A portion of the second surface protrudes away from the first surface along the thickness direction of the lower mold 1 to form a ridge 24. When the frame 9 and the ridge 24 are pressed together, the ridge 24 is more likely to deform, resulting in good sealing performance between the frame 9 and the ridge 24. Furthermore, the surface area of ​​the ridge 24 is smaller than the surface area of ​​the second surface, and the compression area between the frame 9 and the ridge 24 is small and uneven, resulting in good sealing performance and less air leakage.

[0057] like Figure 1 As shown, in some embodiments, a limiting portion 12 is provided on the upper surface of the lower mold 1 around the recess 11. Figure 1 There are four limiting parts 12. When the frame 9 is located in the recess 11, the four limiting parts 12 are located at the four corners of the frame 9. The limiting parts 12 limit the frame 9. When the contour block 4 presses the frame 9 downward, the frame 9 is not easy to shift, thus preventing the contour block 4 from pressing on the screen 10 after the frame 9 shifts.

[0058] like Figure 2 and Figure 4 As shown, in some embodiments, the mobile phone screen sealing test fixture also includes a lower mold base 6, to which the lower mold 1 is connected. Considering that mobile phones may have interfaces for connecting headphones or charging cables, the frame 9 may have some holes. The lower mold base 6 is provided with a sealing element 7, which is slidably connected to the lower mold base 6. The sealing element 7 has a plug, which is used to seal the holes on the frame 9. When the frame 9 is located in the recess 11, the sealing element 7 drives the plug to slide along the lower mold base 6 until the plug seals the holes on the frame 9.

[0059] In practice, the seal 7 and the lower mold base 6 are slidably connected via a slide rail and slider assembly. The slide rail and slider assembly includes a slide rail 81 arranged along the length of the lower mold 1 and a slider 82 slidably connected to the slide rail 81. The slide rail 81 is connected to the lower mold base 6, and the slider 82 has a connecting surface that is connected to the seal 7, so that the seal 7 and the slider 82 slide together on the slide rail 81.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile phone screen sealing test fixture, the mobile phone screen comprising a rubber frame (9) and a screen (10) bonded with the rubber frame (9), characterized in that, The mobile phone screen sealing test fixture comprises: a lower mold (1) having a recess (11) with an air inlet channel formed therein; a sealing rubber ring (2) sleeved on the opening edge of the recess (11), the rubber frame (9) being connected with the recess (11) through the sealing rubber ring (2), the recess (11), the sealing rubber ring (2), the rubber frame (9) and the screen (10) forming a test cavity; a profiling block (4) having a shape matched with the profile of the rubber frame (9), the profiling block (4) being used for abutting against the rubber frame (9) to press the rubber frame (9) and the sealing rubber ring (2) tightly.

2. The cell phone screen seal test fixture of claim 1, wherein, The profiling block (4) comprises a plurality of split structures which are distributed along the circumference of the recess (11); And / or, the profiling block (4) is provided with air permeable holes.

3. The cell phone screen seal test fixture of claim 2, wherein, The mobile phone screen sealing test fixture further comprises an upper mold (3) connected with the profiling block (4).

4. The mobile phone screen sealing test fixture according to claim 3, wherein the lower mold (1) and the upper mold (3) are provided with a positioning column (5) extending along the thickness direction of the lower mold (1); the positioning column (5) is connected with the upper mold (3), the lower mold (1) is provided with a positioning hole used for cooperating with the positioning column (5), and the positioning column (5) can be inserted into the positioning hole so that the profiling block (4) abuts against and presses the rubber frame (9).

5. The mobile phone screen sealing test fixture according to claim 1, wherein the sealing rubber ring (2) has a plurality of protrusions (21) extending along the radial direction, the side wall of the recess (11) has a plurality of grooves formed by being recessed along the radial direction, and the plurality of protrusions (21) correspond to the plurality of grooves one by one.

6. The mobile phone screen sealing test fixture according to claim 5, wherein the sealing rubber ring (2) has opposite first and second ends (22) and (23) along the length direction of the lower mold (1), the number of the protrusions (21) of the first end (22) is different from the number of the protrusions (21) of the second end (23).

7. The mobile phone screen sealing test fixture according to claim 5, wherein the sealing rubber ring (2) has opposite first and second surfaces along the thickness direction of the lower mold (1), the first surface is connected with the recess (11), and the second surface is used for abutting against the rubber frame (9); part of the second surface is locally raised away from the first surface along the thickness direction of the lower mold (1) to form a convex rib (24).

8. The mobile phone screen sealing test fixture according to claim 1, wherein a limiting portion (12) is arranged on the upper surface of the lower mold (1) at the periphery of the recess (11).

9. The cell phone screen seal test fixture of claim 1, wherein, The mobile phone screen sealing test fixture further comprises a lower mold seat (6), and the lower mold (1) is connected with the lower mold seat (6); the lower mold seat (6) is provided with a sealing member (7) which is slidingly connected with the lower mold seat (6). The sealing member (7) has a plug for plugging a hole on the rubber frame (9).

10. The cell phone screen seal test fixture of claim 9, wherein, The sealing member (7) is slidably connected with the lower mold base (6) through a slide rail and slide block assembly. The slide rail and slide block assembly comprises a slide rail (81) arranged along the length direction of the lower mold (1) and a slide block (82) slidably connected with the slide rail (81), the slide rail (81) is connected with the lower mold base (6), and the slide block (82) has a connecting surface connected with the sealing member (7).

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