Mobile terminal back cover removal device and method
By combining the fixing mechanism and the separation mechanism, the problems of unstable clamping and damage during the disassembly of the mobile terminal back cover are solved, and the back cover is separated from the middle frame stably and without damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2021-12-15
- Publication Date
- 2026-05-26
Smart Images
Figure CN116264594B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of mobile terminal back cover removal, specifically to a mobile terminal back cover removal device and a mobile terminal back cover removal method. Background Technology
[0002] When repairing mobile terminals, it is usually necessary to remove the back cover. In existing technology, clamping tools are typically used to hold the mid-frame of the mobile terminal to facilitate separation of the mid-frame and back cover. However, the mid-frame of a mobile terminal is relatively narrow, resulting in a small force-bearing area during fixation. This leads to unstable clamping, causing the mobile terminal to wobble and hindering the removal of the back cover. Furthermore, the mid-frame of a mobile terminal has relatively low structural strength, making it prone to damage during clamping. Summary of the Invention
[0003] The purpose of this disclosure is to provide a device and method for removing the back cover of a mobile terminal, so as to solve the technical problems existing in the related art.
[0004] To achieve the above objectives, this disclosure provides a mobile terminal back cover removal device, comprising:
[0005] The machine is equipped with a placement platform for placing mobile terminals;
[0006] A fixing mechanism is movably mounted on the machine platform in a direction close to or away from the placement platform. The fixing mechanism is used to abut against the back cover of the mobile terminal so that the fixing mechanism and the placement platform can clamp the mobile terminal from the back cover and the screen end of the mobile terminal.
[0007] A separation mechanism is installed on the machine base and is used to separate the back cover of the mobile terminal from the mid-frame of the mobile terminal.
[0008] Optionally, the placement platform is provided with a first suction cup, which is used to attach the mobile terminal.
[0009] Optionally, the elastic clamping structure forms a limiting groove on one side facing the placement platform, the sidewall of the limiting groove is used to abut against the side of the rear cover and the middle frame, and the bottom wall of the limiting groove is used to abut against the back plate of the rear cover.
[0010] Optionally, the elastic clamping structure includes a clamping block for pressing the mobile terminal against the placement platform, the clamping block being elastic; or,
[0011] The elastic clamping structure includes a clamping block and an elastic element. The clamping block is used to press the mobile terminal against the placement platform. The elastic element is located on the side of the clamping block away from the placement platform, and the elastic element is used to apply an elastic force to the clamping block, causing it to move towards the placement platform; or...
[0012] The elastic clamping structure includes a clamping block and an elastic element. The clamping block is used to press the mobile terminal onto the placement platform. The clamping block is elastic. The elastic element is located on the side of the clamping block away from the placement platform. The elastic element is used to apply an elastic force to the clamping block to move it toward the placement platform.
[0013] Optionally, the mobile terminal back cover removal device further includes a material picking mechanism, which includes a second suction cup and a material picking drive device. The second suction cup is used to pick up the back cover, and the output end of the material picking drive device is connected to the second suction cup and can drive the second suction cup to move closer to or away from the placement platform.
[0014] The fixing mechanism includes a clamping drive device, the output end of which is connected to the elastic clamping structure and can drive the elastic clamping structure to move closer to or away from the placement platform.
[0015] Optionally, the mobile terminal back cover removal device includes an installation structure, which includes a first installation plate, a second installation plate, and a third installation plate. The first installation plate, the second installation plate, and the third installation plate are arranged opposite to each other. The first installation plate is connected to the third installation plate, and the second installation plate is movably disposed between the first installation plate and the third installation plate.
[0016] The material handling drive device is mounted on the machine base, and the output end of the material handling drive device is connected to the first mounting plate. The second suction cup is mounted on the first mounting plate.
[0017] The clamping drive device is mounted on the third mounting plate, and the output end of the clamping drive device is connected to the second mounting plate. The elastic clamping structure is mounted on the second mounting plate.
[0018] Optionally, the elastic clamping structure is disposed close to the anti-reverse structure, and the second suction cup is located on the side of the elastic clamping structure opposite to the anti-reverse structure.
[0019] Optionally, the separation mechanism includes a first separation mechanism, which includes a first separation drive device and a push block. The push block is inclined and abuts against the end of the rear cover away from the stop structure. The output end of the first separation drive device is connected to the push block and drives the push block to move obliquely upward, so that the side of the rear cover away from the stop structure separates from the middle frame and forms a gap; or,
[0020] The separation mechanism includes a first separation mechanism, which includes a first separation drive device and a first separation plate. The output end of the first separation drive device is connected to the first separation plate and is used to drive the first separation plate to insert between the side of the back cover away from the anti-retraction structure and the middle frame, so that there is a gap between the back cover and the middle frame.
[0021] Optionally, the surface of the pusher that abuts against the rear cover is formed as an arc-shaped surface.
[0022] Optionally, the separation mechanism further includes a second separation mechanism, which includes a second separation drive device, a third separation drive device, and a second separation plate. The output end of the second separation drive device is connected to the second separation plate and is used to drive the second separation plate to insert into the gap. The output end of the third separation drive device is connected to the second separation drive device and is used to drive the second separation drive device and the second separation plate to move between the first separation mechanism and the anti-retraction structure, so that the side of the back cover separates from the middle frame.
[0023] Optionally, the second separation mechanism includes a mounting base, a guide rail, and a guide block. The second separation drive device is mounted on the mounting base, the drive end of the third separation drive device is connected to the mounting base, the guide rail is disposed on the machine base, and the guide block is mounted on the mounting base and slidably connected to the guide rail.
[0024] Optionally, the mobile terminal back cover removal device includes a position detection device mounted on the machine base, the position detection device being used to detect the relative position of the mobile terminal with respect to the push block or the first separation piece.
[0025] Optionally, the mobile terminal back cover removal device further includes a pressure sensor, which is disposed on the push block or the first separation piece, and is used to detect the pressure exerted on the push block or the first separation piece when it comes into contact with the mobile terminal.
[0026] This disclosure also provides a method for removing the back cover of a mobile terminal, including:
[0027] The mobile terminal is clamped between the back cover and the screen of the mobile terminal;
[0028] Separate the back cover of the mobile terminal from the mid-frame of the mobile terminal.
[0029] Through the above technical solution, the fixing mechanism and the placement platform can clamp the mobile terminal from the back cover and screen end, preventing the mobile terminal from shaking or detaching from the placement platform, limiting the displacement of the mobile terminal in different directions, and ensuring that the fixing mechanism can stably fix the mobile terminal on the placement platform. This ensures that during the separation mechanism's separation of the back cover from the mid-frame, the mobile terminal remains stably positioned on the placement platform, preventing overall shaking or movement that could damage the mobile terminal, thus achieving the separation of the back cover from the mid-frame. Furthermore, because the back cover of the mobile terminal is relatively large, the contact area between the fixing mechanism and the back cover is large, and the pressure on the back cover is relatively low. Even if the back cover is made of a low-strength material (such as ceramic), it is not easily damaged by excessive force.
[0030] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description
[0031] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:
[0032] Figure 1 This is a perspective view of a mobile terminal back cover removal device provided in an exemplary embodiment of the present disclosure;
[0033] Figure 2 This is a perspective view of a mobile terminal back cover removal device provided in an exemplary embodiment of the present disclosure, wherein the device housing is partially hidden.
[0034] Figure 3 This is a side view of a mobile terminal back cover removal device provided in an exemplary embodiment of the present disclosure, wherein the device housing is partially hidden.
[0035] Figure 4 This is a perspective view of the placement platform, anti-reverse structure, and first separation mechanism of a mobile terminal back cover removal device provided in an exemplary embodiment of this disclosure;
[0036] Figure 5 This is a side view of the placement platform, anti-reverse structure, and first separation mechanism of a mobile terminal back cover removal device provided in an exemplary embodiment of the present disclosure, wherein the mobile terminal is located on the placement platform;
[0037] Figure 6 yes Figure 5An enlarged view of section "A" in the image;
[0038] Figure 7 This is a perspective view of the placement platform, anti-reverse structure, and first separation mechanism of a mobile terminal back cover removal device provided in another exemplary embodiment of the present disclosure, wherein the mobile terminal is located on the placement platform;
[0039] Figure 8 This is a perspective view of the machine base, elastic clamping structure, and material handling mechanism of a mobile terminal back cover disassembly device provided in an exemplary embodiment of this disclosure;
[0040] Figure 9 This is a front view of the machine base, elastic clamping structure, and material handling mechanism of a mobile terminal back cover removal device provided in an exemplary embodiment of this disclosure;
[0041] Figure 10 This is a top view of the machine base and separation mechanism of a mobile terminal back cover removal device provided in an exemplary embodiment of the present disclosure, wherein the mobile terminal is located on a placement platform;
[0042] Figure 11 yes Figure 10 An enlarged view of section "B" in the middle;
[0043] Figure 12 This is a perspective view of a mobile terminal provided in an exemplary embodiment of this disclosure.
[0044] Explanation of reference numerals in the attached figures
[0045] 10-Machine base; 101-Device housing; 102-Control knob; 103-Display screen; 1-Placement platform; 11-First suction cup; 12-Placement groove; 20-Fixing mechanism; 21-Anti-reverse structure; 22-Elastic clamping structure; 23-Limiting groove; 231-Side wall; 232-Bottom wall; 24-Clamping block; 25-Elastic element; 26-Clamping drive device; 30-Separation mechanism; 31-First separation mechanism; 311-First separation drive device; 32-Push block; 321-Arc-shaped surface; 3 3-First separating plate; 34-Second separating mechanism; 341-Second separating drive device; 342-Third separating drive device; 35-Second separating plate; 36-Mounting base; 37-Guide rail; 38-Guide block; 40-Material handling mechanism; 41-Second suction cup; 42-Material handling drive device; 43-Mounting structure; 44-First mounting plate; 45-Second mounting plate; 46-Third mounting plate; 5-Mobile terminal; 51-Rear cover; 511-Side; 512-Back plate; 52-End face; 53-Middle frame. Detailed Implementation
[0046] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0047] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" refer to the upper and lower positions of the mobile terminal back cover removal device in use. See reference [link / reference needed] for details. Figure 1 As shown, "inner" and "outer" refer to the inner and outer contours of the relevant components. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description referring to the accompanying drawings, the same reference numerals in different drawings denote the same element.
[0048] The back cover of a mobile terminal typically includes a back panel and sides extending from the back panel towards the mid-frame of the mobile terminal, with the sides of the back cover connecting to the mid-frame. In existing technology, when removing the back cover of a mobile terminal, the mid-frame is usually clamped to restrict the movement of the mobile terminal. Because the width of the mid-frame of a mobile terminal is relatively small, especially for mobile terminals with unibody back covers, where the sides are wider and the mid-frame width is very small, there is a problem of unstable clamping when removing the back cover of such mobile terminals due to the small force-bearing area of the mid-frame. Particularly for unibody ceramic back covers, because ceramic has low strength and cannot withstand large clamping forces, it is also impossible to clamp the mobile terminal from the sides of the ceramic back cover.
[0049] In view of this, such as Figures 1 to 12 As shown, this disclosure provides a mobile terminal back cover removal device, including a machine base 10, a fixing mechanism 20 and a separation mechanism 30. The machine base 10 is provided with a placement platform 1 for placing a mobile terminal 5. The fixing mechanism 20 is movably installed on the machine base 10 in a direction close to or away from the placement platform 1. The fixing mechanism 20 is used to abut against the back cover 51 of the mobile terminal 5 so that the fixing mechanism 20 and the placement platform 1 can clamp the mobile terminal 5 from the back cover 51 and the screen end of the mobile terminal 5. The separation mechanism 30 is installed on the machine base 10 and is used to separate the back cover 51 of the mobile terminal 5 from the middle frame 53 of the mobile terminal 5.
[0050] The aforementioned mobile terminal back cover removal device can be used to remove the back cover 51 of mobile terminals 5 such as mobile phones, tablets, and wearable devices. Figures 2 to 5 As shown, when using the aforementioned mobile terminal back cover removal device to remove the back cover 51 of the mobile terminal 5, the mobile terminal 5 can be placed on the placement platform 1, and the fixing mechanism 20 can be moved in a direction close to the placement platform 1, such as... Figure 3 and Figure 8As shown, the fixing mechanism 20 can press the mobile terminal 5 firmly onto the placement platform 1. That is, the fixing mechanism 20 can abut against the back cover 51 of the mobile terminal 5, and the contact point between the placement platform 1 and the mobile terminal 5 is on the screen or front cover of the mobile terminal 5. The fixing mechanism 20 and the placement platform 1 can clamp the mobile terminal 5 from the back cover 51 and the screen or front cover of the mobile terminal 5, thereby limiting the mobile terminal 5 from shaking or detaching from the placement platform 1. After the mobile terminal 5 is fixed onto the placement platform 1 by the fixing mechanism 20, the back cover 51 of the mobile terminal 5 can be separated from the middle frame 53 by the separation mechanism 30, thereby realizing the disassembly of the back cover 51 of the mobile terminal 5.
[0051] Through the above technical solution, the fixing mechanism 20 and the placement platform 1 can clamp the mobile terminal 5 from the back cover 51 and the screen end of the mobile terminal 5, preventing the mobile terminal 5 from shaking or detaching from the placement platform 1, limiting the displacement of the mobile terminal 5 in different directions, and ensuring that the fixing mechanism 20 can stably fix the mobile terminal 5 on the placement platform 1. This ensures that during the separation process of the separation mechanism 30 separating the back cover 51 of the mobile terminal 5 from the middle frame 53, the mobile terminal 5 can remain stably located on the placement platform 1, preventing the mobile terminal 5 from shaking or moving and causing damage to the mobile terminal 5, thereby achieving the separation of the back cover 51 of the mobile terminal 5 from the middle frame 53. Furthermore, because the back cover 51 of the mobile terminal 5 is relatively large, the contact area between the fixing mechanism 20 and the back cover 51 is large, and the pressure on the back cover 51 is relatively small. Even if the back cover 51 is made of a low-strength material (such as ceramic), it is not easily damaged due to excessive force.
[0052] It should be noted that in embodiments where the back cover 51 and the middle frame 53 of the mobile terminal 5 are connected by adhesive, before separating the back cover 51 and the middle frame 53 of the mobile terminal 5 using the aforementioned mobile terminal back cover removal device, the mobile terminal 5 can be subjected to a melt adhesive treatment. This involves locally heating the adhesive portion between the back cover 51 and the middle frame 53 to reduce its adhesiveness, thus facilitating separation. After the mobile terminal 5 has undergone melt adhesive treatment, it is placed in the aforementioned mobile terminal back cover removal device. The separation mechanism 30 can remove the adhesive between the back cover 51 and the middle frame 53, thereby separating the back cover 51 and the middle frame 53. In embodiments where the back cover 51 and the mid-frame 53 of the mobile terminal 5 are connected by a snap-fit mechanism, for example, a snap-fit edge is formed on the edge of the back cover that contacts the mid-frame, and a snap-fit groove is formed on the mid-frame that mates with the snap-fit edge. The separation mechanism 30 can apply a disassembly force to the back cover or the mid-frame to release the snap-fit relationship between the back cover and the mid-frame, allowing the back cover and the mid-frame to separate. This disclosure does not impose specific limitations on the fixing method between the back cover 51 and the mid-frame 53 of the mobile terminal 5, nor does it impose limitations on whether the mobile terminal 5 undergoes a hot-melt adhesive treatment or the specific method of hot-melt adhesive treatment.
[0053] As an example application scenario, in a mobile phone including a unibody ceramic back cover, the back cover and the middle frame are fixed by a snap-fit connection, and adhesive is also filled between the back cover and the middle frame. The separation mechanism 30 can apply a disassembly force to the back cover or the middle frame to disengage the snap-fit structure between the back cover and the middle frame, and remove the adhesive between the back cover and the middle frame so that the back cover and the middle frame can be separated smoothly.
[0054] To facilitate the separation of the back cover 51 and the mid-frame 53 of the mobile terminal 5, optionally, as follows: Figure 4 As shown, a first suction cup 11 can also be provided on the placement platform 1. The first suction cup 11 is used to adsorb the mobile terminal 5 to limit the displacement of the mobile terminal 5 in the direction away from the placement platform 1. Here, the first suction cup 11 can be adsorbed on the screen of the mobile terminal 5, or it can be adsorbed on the front cover of the mobile terminal 5 which is opposite to the back cover 51. This disclosure does not limit the specific adsorption position of the first suction cup 11. During the process of the separation mechanism 30 separating the back cover 51 and the middle frame 53 of the mobile terminal 5, the separation mechanism 30 will apply a separation force to the back cover 51 to move it away from the middle frame 53. The first suction cup 11 is adsorbed on the screen end of the mobile terminal 5 away from the back cover 51, which can apply an adsorption force to the mobile terminal 5 towards the placement platform 1, thereby limiting the displacement of the mobile terminal 5 in the direction away from the placement platform 1, so that the mobile terminal 5 can always be located on the placement platform 1 and will not move with the back cover 51, ensuring that the back cover 51 can be successfully separated from the middle frame 53.
[0055] In the above embodiments, to ensure the adsorption effect of the first suction cup 11 on the mobile terminal 5, multiple first suction cups 11 can be provided, with multiple first suction cups 11 adsorbing onto the mobile terminal 5 at different positions, thereby ensuring that the mobile terminal 5 can be stably fixed on the placement platform 1. To facilitate the installation of the first suction cup 11, a placement groove 12 can optionally be formed on the placement platform 1. The shape of the placement groove 12 is adapted to the shape of the mobile terminal 5. The first suction cup 11 can be installed at the bottom of the placement groove 12 so as to adsorb onto the mobile terminal 5 placed in the placement groove 12, restricting the movement of the mobile terminal 5 away from the placement platform 1. The groove wall of the placement groove 12 can stop the end of the mobile terminal 5, restricting the displacement of the mobile terminal 5 in the direction parallel to the placement platform 1.
[0056] Optionally, the fixing mechanism 20 may include an elastic pressing structure 22, which is used to press against the back cover 51 of the mobile terminal 5. The mobile terminal back cover removal device may also include a backstop structure 21, which is installed on the placement platform 1 or the machine base 10 and is used to press against the end face 52 of the mobile terminal 5.
[0057] In the aforementioned mobile terminal back cover removal device, the elastic pressing structure 22 presses the mobile terminal 5 onto the placement platform 1, applying an elastic pressing force to the mobile terminal 5. The anti-retraction structure 21 abuts against the end face 52 of the mobile terminal 5, restricting the movement of the mobile terminal 5 on the placement platform 1. The elastic pressing structure 22 and the anti-retraction structure 21 can contact the mobile terminal 5 from different positions, thereby restricting the displacement of the mobile terminal 5 in different directions. Simultaneously, because the elastic pressing structure 22 is elastic, when the separation mechanism 30 separates the back cover 51 and the middle frame 53 of the mobile terminal 5, the back cover 51 moves away from the middle frame 53, and the elastic pressing structure 22 can undergo elastic deformation in the direction away from the placement platform 1, allowing the back cover 51 to displace away from the middle frame 53 and separate from it.
[0058] To better restrict the movement of the mobile terminal 5 on the placement platform 1, optionally, as Figure 4 As shown, the elastic pressing structure 22 can form a limiting groove 23 on the side facing the placement platform 1. The side wall 231 of the limiting groove 23 is used to abut against the side 511 of the rear cover 51 and the middle frame 53, and the bottom wall 232 of the limiting groove 23 is used to abut against the back plate 512 of the rear cover 51 to restrict the mobile terminal 5 from leaving the placement platform. The side wall 231 of the elastic pressing structure 22 can abut against the side of the mobile terminal 5, thereby restricting the movement of the mobile terminal 5 on the side.
[0059] Since different mobile terminals 5 may have different structures on their back covers 51, the specific shape of the limiting groove 23 can be adapted to the specific shape of the back cover 51 to avoid the structures on the back cover 51. As an exemplary embodiment, when the back cover 51 of the mobile terminal 5 has a structure protruding from the back plate 512 of the back cover 51, such as a camera module or fingerprint recognition module of a mobile phone, an avoidance groove for avoiding the structure can be formed on the bottom wall 232 of the limiting groove 23.
[0060] To provide elastic clamping force to the mobile terminal 5, the aforementioned elastic clamping structure 22 can have various structures. As an exemplary embodiment, the elastic clamping structure 22 may include a clamping block 24, which is used to press the mobile terminal 5 onto the placement platform 1. The clamping block 24 is elastic, thereby applying clamping force to the mobile terminal 5 to ensure that the mobile terminal 5 can be stably fixed on the placement platform 1. When the separation mechanism 30 separates the back cover 51 and the middle frame 53 of the mobile terminal 5, the mobile terminal 5 moves away from the middle frame 53, and the clamping block 24 can undergo elastic deformation to allow the back cover 51 to displace, thereby preventing damage to the back cover 51. The clamping block 24 can be made of an elastic material, such as rubber or latex.
[0061] As another exemplary embodiment, the elastic clamping structure 22 may include a clamping block 24 and an elastic element 25. The clamping block 24 is used to press the mobile terminal 5 onto the placement platform 1. The elastic element 25 is located on the side of the clamping block 24 away from the placement platform 1. The elastic element 25 is used to apply an elastic force to the clamping block 24 and the mobile terminal 5, thereby ensuring that the mobile terminal 5 can be stably pressed onto the placement platform 1. When the back cover 51 separates from the middle frame 53, the elastic element 25 can undergo elastic deformation in a direction away from the placement platform 1, so that the clamping block 24 and the back cover 51 can be displaced in a direction away from the placement platform 1, thereby preventing damage to the back cover 51.
[0062] The elastic element 25 here can be a spring, a sheet, or an elastic block, etc. To ensure that the elastic element 25 applies sufficient elastic force to the clamping block 24, multiple elastic elements 25 can be provided, and the multiple elastic elements 25 apply a uniform elastic force to the clamping block 24. This disclosure does not limit the specific structure and number of the elastic elements 25.
[0063] As another exemplary embodiment, the elastic clamping structure 22 includes a clamping block 24 and an elastic element 25. The clamping block 24 is used to clamp the mobile terminal 5 onto the placement platform 1. The clamping block 24 is elastic, and the elastic element 25 is located on the side of the clamping block 24 away from the placement platform 1. The elastic element 25 is used to apply an elastic force to the clamping block 24 to move it toward the placement platform 1. When the separation mechanism 30 separates the back cover 51 and the middle frame 53 of the mobile terminal 5, the mobile terminal 5 moves toward the direction away from the middle frame 53. Both the elastic element 25 and the clamping block 24 can undergo elastic deformation in the direction away from the placement platform 1, so that the back cover 51 can move and avoid damage to the back cover 51.
[0064] Optionally, such as Figure 8 As shown, the mobile terminal back cover removal device may also include a material picking mechanism 40. The material picking mechanism 40 includes a second suction cup 41 and a material picking drive device 42. The second suction cup 41 is used to adsorb the back cover 51. The output end of the material picking drive device 42 is connected to the second suction cup 41 and can drive the second suction cup 41 to move closer to or away from the placement platform 1. The fixing mechanism 20 includes a pressing drive device 26. The output end of the pressing drive device 26 is connected to the elastic pressing structure 22 and can drive the elastic pressing structure 22 to move closer to or away from the placement platform 1.
[0065] The second suction cup 41 can adhere to the back cover 51 of the mobile terminal 5. After the back cover 51 and the middle frame 53 are separated, the second suction cup 41 can fix the back cover 51, thereby preventing the back cover 51 from shaking or falling off after separation from the middle frame 53. Furthermore, the material handling drive device 42 can drive the second suction cup 41 closer to or further away from the placement platform 1, thereby enabling the second suction cup 41 to drive the back cover 51 away from the middle frame 53, adjusting the size of the gap between the back cover 51 and the middle frame 53 to facilitate subsequent operations by the operator.
[0066] As an example application scenario, after the unibody back cover 51 of the mobile phone is disassembled, the material picking drive device 42 can drive the second suction cup 41 to move the back cover 51 away from the middle frame 53, thereby adjusting the gap size between the back cover 51 and the middle frame 53. After the distance between the back cover 51 and the middle frame 53 reaches a preset distance, the material picking drive device 42 stops operating, and the second suction cup 41 can fix the back cover 51 above the middle frame 53, thereby facilitating the operator to disassemble the wiring connecting the back cover 51 and the interior of the mobile terminal 5. The aforementioned pressing drive device 26 and material picking drive device 42 can be cylinders, hydraulic cylinders, linear motors, or lead screw and nut drive structures, etc., and this disclosure does not impose specific limitations on them.
[0067] Both the material handling mechanism 40 and the elastic clamping structure 22 are in contact with the rear cover 51. To facilitate the arrangement and installation of the material handling mechanism 40 and the elastic clamping structure 22, optionally, as follows: Figure 8 and Figure 9 As shown, the mobile terminal back cover removal device may further include a mounting structure 43, which may include a first mounting plate 44, a second mounting plate 45, and a third mounting plate 46. The first mounting plate 44, the second mounting plate 45, and the third mounting plate 46 are arranged opposite to each other. The first mounting plate 44 is connected to the third mounting plate 46, and the second mounting plate 45 is movably disposed between the first mounting plate 44 and the third mounting plate 46. A material picking drive device 42 is mounted on the machine base 10, and the output end of the material picking drive device 42 is connected to the first mounting plate 44. A second suction cup 41 is disposed on the first mounting plate 44. A pressing drive device 26 is mounted on the third mounting plate 46, and the output end of the pressing drive device 26 is connected to the second mounting plate 45. An elastic pressing structure 22 is mounted on the second mounting plate 45.
[0068] In the above embodiment, the output end of the material picking drive device 42 is connected to the first mounting plate 44, and the second suction cup 41 and the third mounting plate 46 are both connected to the first mounting plate 44. When the material picking drive device 42 drives the first mounting plate 44 to move closer to or away from the placement platform 1, the second suction cup 41, the pressing drive device 26 connected to the first mounting plate 44, the second mounting plate 45, and the elastic pressing structure 22 all move closer to or away from the placement platform 1. The material picking drive device 42 can adjust the distance between the second suction cup 41 and the placement platform 1, thereby ensuring that the second suction cup 41 can stably adhere to the back cover 51 of the mobile terminal 5. The pressing drive device 26 can drive the elastic pressing structure 22 to move closer to or away from the placement platform 1, thereby controlling the elastic pressing structure 22 to stably press the mobile terminal 5 onto the placement platform 1.
[0069] Since the material picking drive device 42 can simultaneously drive the second suction cup 41 and the elastic pressing structure 22, as an exemplary application scenario, when pressing the mobile terminal 5, the material picking drive device 42 can drive the first mounting plate 44 to approach the placement platform 1. The second suction cup 41, the pressing drive device 26 connected to the first mounting plate, the second mounting plate 45, and the elastic pressing structure 22 all approach the placement platform 1. When the second suction cup 41 is attached to the mobile terminal 5, the material picking drive device 42 stops running, and the pressing drive device 26 drives the elastic pressing structure 22 to continue to approach the placement platform 1, thereby pressing the mobile terminal 5 onto the placement platform 1 and ensuring the stability of the mobile terminal 5. After the separation mechanism 30 separates the back cover 51 and the middle frame 53, the clamping drive device 26 can drive the elastic clamping structure 22 away from the mobile terminal 5, thereby avoiding the elastic clamping structure 22 from obstructing and blocking the back cover 51, so as to facilitate the operator to perform subsequent operations on the mobile terminal 5. For example, after the one-piece molded back cover 51 of the mobile phone is disassembled, the clamping drive device 26 can drive the elastic clamping structure 22 away from the mobile terminal 5, and the second suction cup 41 fixes the back cover 51 above the middle frame 53, so as to facilitate the operator to disassemble the edge of the back cover 51 and the middle frame 53, or to facilitate the operator to disassemble the wiring connecting the back cover 51 and the inside of the mobile terminal 5.
[0070] When fixing the mobile terminal 5, in order to facilitate the operation of the separation mechanism 30 on the mobile terminal 5, optionally, as follows: Figure 3 , Figure 5 and Figure 8 As shown, the elastic clamping structure 22 can be positioned close to the stop structure 21, and the second suction cup 41 can be located on the side of the elastic clamping structure 22 away from the stop structure 21. The elastic clamping structure 22 is positioned close to the stop structure 21, and both the elastic clamping structure 22 and the stop structure 21 are close to the positions where they contact the mobile terminal 5. The distribution positions of the stopping force applied to the mobile terminal 5 are close to each other, preventing the stopping force applied by the fixing mechanism 20 to the mobile terminal 5 and the separation force applied by the separation mechanism 30 to the back cover 51 from canceling each other out and causing separation difficulties. As an exemplary embodiment, such as... Figure 3 As shown, the elastic clamping structure 22 and the anti-retraction structure 21 can respectively contact the position of the mobile terminal 5 near the first end, while the separation structure separates the mobile terminal 5 from the second end away from the first end. The separation force applied by the separation structure is far away from the elastic clamping structure 22 and the anti-retraction structure 21, and the torque generated when the separation force is transmitted to the elastic clamping structure 22 through the back cover is also greater, thereby causing the elastic clamping structure 22 to displace away from the placement platform 1, which facilitates the separation of the back cover and the middle frame 53. The second suction cup 41 is located on the side of the elastic clamping structure 22 away from the anti-retraction structure 21, thereby avoiding the elastic clamping structure 22 and avoiding positional interference.
[0071] As an exemplary implementation, such as Figure 7 As shown, the separation mechanism 30 may include a first separation mechanism 31, which includes a first separation drive device 311 and a first separation plate 33. The output end of the first separation drive device 311 is connected to the first separation plate 33 and is used to drive the first separation plate 33 to insert between the side of the rear cover 51 away from the stop structure 21 and the middle frame 53, so that there is a gap between the rear cover 51 and the middle frame 53. To improve the separation efficiency, there may be multiple first separation plates 33. As an exemplary embodiment, there may be two first separation plates 33. The two first separation plates 33 may be respectively used to insert between the end face 52 of the rear cover 51 away from the stop structure 21 and the middle frame 53, so that the rear cover 51 and the middle frame 53 can be separated from multiple positions at the same time, thereby improving the separation efficiency.
[0072] As another exemplary implementation, such as Figures 4 to 6 As shown, the separation mechanism 30 may include a first separation mechanism 31, which includes a first separation drive device 311 and a push block 32. The push block 32 is inclined and abuts against the end of the rear cover 51 away from the stop structure 21. The output end of the first separation drive device 311 is connected to the push block 32 and is used to drive the push block 32 to move obliquely upward, so that the side of the rear cover 51 away from the stop structure 21 is separated from the middle frame 53 and has a gap. The first separation drive device 311 drives the push block 32 to move obliquely upward, and the push block 32 applies a pushing force to the rear cover 51, which can rotate around the stop structure 21 away from the placement platform 1, thereby separating from the middle frame 53. In the embodiment where the back cover 51 and the middle frame 53 of the mobile terminal 5 are fixed by a snap-fit connection, the first separation drive device 311 drives the push block 32 to move obliquely upward, which can apply a disassembly force to the back cover 51, so that the snap-fit edge on the back cover 51 that snaps with the middle frame 53 disengages from the snap-fit groove on the middle frame 53, thereby releasing the snap-fit relationship between the back cover 51 and the middle frame 53.
[0073] The first separation drive device 311 here can be a linear motor, a cylinder, a hydraulic cylinder, or a lead screw and nut drive structure, etc., and this disclosure does not limit it. In order to increase the pushing force applied by the push block 32 to the rear cover 51, there can be multiple push blocks 32. Multiple push blocks 32 are in contact with the side of the rear cover 51 away from the anti-reverse mechanism and are used to apply a pushing force to the rear cover 51 to move it away from the middle frame 53.
[0074] To ensure that the push block 32 and the rear cover 51 can be stably abutted, such as Figure 6As shown, optionally, the surface of the push block 32 that abuts against the rear cover 51 is formed as an arc-shaped surface 321, thereby increasing the contact area between the push block 32 and the rear cover 51. When the first separation drive device 311 pushes the push block 32 to move obliquely upward, the lower half of the arc-shaped surface 321 can stop below the rear cover 51 and transmit the oblique upward pushing force to the rear cover 51, preventing the push block 32 and the rear cover 51 from separating, and ensuring that the rear cover 51 can separate from the middle frame 53.
[0075] Optionally, an anti-slip layer may be provided on the surface where the push block 32 abuts against the back cover 51. For example, a layer of anti-slip material with high friction, such as rubber or plastic, may be adhered to the surface where the push block 32 abuts against the back cover 51. In addition, the surface where the push block 32 abuts against the back cover 51 may also be formed as an anti-slip surface, for example, the surface where the push block 32 abuts against the back cover 51 may be provided with anti-slip textures, thereby increasing the frictional contact area between the push block 32 and the back cover 51.
[0076] After separating the side of the rear cover 51 away from the anti-retraction structure 21 from the middle frame 53 using the first separation mechanism 31 described above, in order to ensure that other parts of the rear cover 51 can also be separated from the middle frame 53, optionally, as follows: Figure 10 and Figure 11 As shown, the separation mechanism 30 also includes a second separation mechanism 34, which includes a second separation drive device 341, a third separation drive device 342, and a second separation plate 35. The output end of the second separation drive device 341 is connected to the second separation plate 35 and is used to drive the second separation plate 35 to insert into the gap. The output end of the third separation drive device 342 is connected to the second separation drive device 341 and is used to drive the second separation drive device 341 and the second separation plate 35 to move between the first separation mechanism 31 and the anti-retraction structure 21, so that the side 511 of the rear cover 51 is separated from the middle frame 53.
[0077] The second separation drive device 341 and the third separation drive device 342 mentioned above can be cylinders, hydraulic cylinders, linear motors, or lead screw and nut drive mechanisms, etc., and this disclosure does not impose specific limitations on them. The second separation piece 35 can move between the first separation mechanism 31 and the anti-retraction structure 21, applying disassembly force to different positions of the rear cover 51 and the middle frame 53, so as to increase the gap between the rear cover 51 and the middle frame 53. In the embodiment where the rear cover 51 and the middle frame 53 of the mobile terminal 5 are fixed by adhesive, the second separation piece 35 can also scrape off the adhesive between the rear cover 51 and the middle frame 53 during the movement, ensuring that the rear cover 51 can be smoothly separated from the middle frame 53.
[0078] Optionally, the second separation mechanism 34 may further include a mounting base 36, a guide rail 37, and a guide block 38. The second separation drive device 341 is mounted on the mounting base 36, the drive end of the third separation drive device 342 is connected to the mounting base 36, the guide rail 37 is set on the machine base 10, and the guide block 38 is mounted on the mounting base 36 and slidably connected to the guide rail 37, so that the mounting base 36 and the second separation piece 35 can move in a specified direction, avoiding the second separation piece 35 from colliding with other structures of the mobile terminal 5 during the movement.
[0079] In addition, to facilitate operator control of the mobile terminal back cover removal device, such as Figure 1 As shown, optionally, the mobile terminal back cover removal device may also include a device housing 101. The machine base 10, the fixing mechanism 20 and the separation mechanism 30 may all be housed inside the device housing 101. The device housing 101 may be provided with a control knob 102 for controlling the removal process and a display screen 103 for detecting the removal process. There may be multiple control knobs 102, which are electrically connected to the pressing drive device 26, the first separation drive device 311, the second separation drive device 341, the third separation drive device 342 and the material picking drive device 42, respectively, so as to control the removal process.
[0080] When the separation mechanism 30 separates the back cover 51 and the middle frame 53 of the mobile terminal 5, in order to ensure that the separation mechanism 30 and the mobile terminal 5 contact the designated position, as an exemplary embodiment, the mobile terminal back cover removal device may also include a position detection device installed on the machine base 10. The position detection device can be used to detect the relative position of the mobile terminal 5 with the push block 32 or the first separation piece 33. As the push block 32 or the first separation piece 33 approaches the mobile terminal 5, the position detection device can detect the relative position of the mobile terminal 5 with the push block 32 or the first separation piece 33. This relative position information can be used to determine whether the push block 32 contacts the end of the back cover 51 of the mobile terminal 5, or it can be used to determine whether the first separation piece 33 is inserted between the side of the back cover 51 away from the stop structure 21 and the middle frame 53, thereby avoiding the push block 32 or the first separation piece 33 from contacting other positions of the mobile terminal 5 and causing damage to the mobile terminal 5.
[0081] The aforementioned position detection device can be a detection camera, which captures the relative position of the mobile terminal 5 with the push block 32 or the first separation piece 33. Alternatively, the position detection device can be a photoelectric sensor, which locates the positions of the mobile terminal 5, the push block 32, or the first separation piece 33 and obtains the relative position of the mobile terminal 5 with respect to the push block 32 or the first separation piece 33. This disclosure does not limit the specific structure of the position detection device.
[0082] As another exemplary embodiment, the mobile terminal back cover removal device may further include a pressure sensor. The pressure sensor is disposed on the push block 32 or the first separation piece 33, and is used to detect the pressure exerted on the push block 32 or the first separation piece 33 when it contacts the mobile terminal 5. When the pressure exerted on the push block 32 or the first separation piece 33 when it contacts the mobile terminal 5 is too high, there is a possibility that the push block 32 or the first separation piece 33 may damage the mobile terminal 5. For example, the contact position between the push block 32 or the first separation piece 33 and the mobile terminal 5 may be incorrect, or the back cover 51 of the mobile terminal 5 may be stuck. By detecting the pressure exerted on the push block 32 or the first separation piece 33 when it contacts the mobile terminal 5, the force state of the separation mechanism 30 and the mobile terminal 5 can be detected, thereby avoiding excessive force between the separation mechanism 30 and the mobile terminal 5 that could damage the mobile terminal 5.
[0083] Based on the aforementioned mobile terminal back cover removal device, as an exemplary removal process, the operator can place the mobile terminal 5 on the placement platform 1, so that the end of the mobile terminal 5 and the anti-retraction structure 21 abut against each other, and the first suction cup 11 is attached to the bottom of the mobile terminal 5. After the mobile terminal 5 is placed on the placement platform 1, the material picking drive device 42 can drive the elastic pressing structure 22 and the second suction cup 41 to approach the placement platform 1, so that the second suction cup 41 is attached to the back cover 51 of the mobile phone, and the elastic pressing structure 22 is close to the back cover 51. The pressing drive device 26 drives the elastic pressing structure 22 to press the mobile terminal 5 firmly onto the placement platform 1. The first separation drive device 311 can drive the push block 32 to move obliquely upward, thereby separating the end of the back cover 51 away from the anti-retraction structure 21 from the middle frame 53. The pressing drive device 26 drives the elastic pressing structure 22 away from the back cover 51. The second separation drive device 341 can drive the second separation piece 35 to insert into the gap between the rear cover 51 and the middle frame 53. The third separation drive device 342 drives the second separation piece 35 to move to the anti-retraction structure 21, thereby separating the side 511 of the rear cover 51 from the middle frame 53, thus completing the separation of the rear cover 51 and the middle frame 53.
[0084] This disclosure also provides a method for removing the back cover of a mobile terminal, including:
[0085] The mobile terminal 5 is clamped between the back cover 51 and the screen of the mobile terminal 5.
[0086] Separate the back cover 51 of the mobile terminal 5 from the middle frame 53 of the mobile terminal 5.
[0087] By using the aforementioned method for removing the back cover of the mobile terminal, the mobile terminal 5 is clamped between the back cover 51 and the screen end of the mobile terminal 5, preventing the mobile terminal 5 from shaking or detaching, and limiting the displacement of the mobile terminal 5 in different directions. During the separation process of the back cover 51 and the mid-frame 53, the mobile terminal 5 remains stably positioned on the placement platform 1, preventing the mobile terminal 5 from shaking or moving and causing damage. This achieves the separation of the back cover 51 and the mid-frame 53. Furthermore, because the back cover 51 of the mobile terminal 5 is relatively large, the pressure on the back cover 51 is relatively low when clamped between the back cover 51 and the screen end. Even if the back cover 51 is made of a low-strength material (such as ceramic), it is not easily damaged by excessive force.
[0088] The aforementioned method for removing the back cover of a mobile terminal can be applied to removing the unibody ceramic back cover of a mobile phone. Because the width of the mid-frame of a phone including a unibody ceramic back cover is small, and the strength of the unibody ceramic back cover is also relatively low, clamping the edge or mid-frame of the unibody ceramic back cover can easily damage the phone due to excessive pressure. However, in the aforementioned method for removing the back cover of a mobile terminal, by clamping the phone between the unibody ceramic back cover and the screen, the clamping area between the unibody ceramic back cover and the screen is larger, the pressure it withstands is lower, and the phone is less likely to be damaged.
[0089] The above-described method for removing the back cover of a mobile terminal can be applied to the above-described device for removing the back cover of a mobile terminal. As an exemplary embodiment, the mobile terminal 5 can be clamped from the back cover 51 and the screen end of the mobile terminal 5 by the fixing mechanism 20 and the placement platform 1, and the back cover 51 of the mobile terminal 5 can be separated from the middle frame 53 of the mobile terminal 5 by the separation mechanism 30.
[0090] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.
[0091] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.
[0092] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.
Claims
1. A device for removing the back cover of a mobile terminal, characterized in that, include: The machine (10) is provided with a placement platform (1) for placing the mobile terminal (5). A fixing mechanism (20) is movably mounted on the machine base (10) in a direction close to or away from the placement platform (1). The fixing mechanism (20) is used to abut against the back cover (51) of the mobile terminal (5) so that the fixing mechanism (20) and the placement platform (1) can clamp the mobile terminal (5) from the back cover (51) and the screen end of the mobile terminal (5). An elastic clamping structure (22) is used to abut against the back cover (51) of the mobile terminal (5). Separation mechanism (30), installed on the machine base (10) and used to separate the back cover (51) of the mobile terminal (5) from the middle frame (53) of the mobile terminal (5); When the separation mechanism (30) separates the back cover (51) and the middle frame (53), the elastic pressing structure (22) can undergo elastic deformation in a direction away from the placement platform (1), so that the back cover (51) can be displaced in a direction away from the middle frame (53) and separated from the middle frame (53).
2. The mobile terminal back cover removal device according to claim 1, characterized in that, The placement platform (1) is provided with a first suction cup (11), which is used to adsorb the mobile terminal (5).
3. The mobile terminal back cover removal device according to claim 1, characterized in that, The mobile terminal back cover removal device also includes a backstop structure (21), which is installed on the placement platform (1) or the machine base (10) and is used to abut against the end face (52) of the mobile terminal (5).
4. The mobile terminal back cover removal device according to claim 3, characterized in that, The elastic clamping structure (22) forms a limiting groove (23) on one side facing the placement platform (1). The side wall (231) of the limiting groove (23) is used to abut against the side (511) of the rear cover (51) and the middle frame (53). The bottom wall (232) of the limiting groove (23) is used to abut against the back plate (512) of the rear cover (51).
5. The mobile terminal back cover removal device according to claim 3, characterized in that, The elastic clamping structure (22) includes a clamping block (24) for pressing the mobile terminal (5) onto the placement platform (1), and the clamping block (24) is elastic; or, The elastic clamping structure (22) includes a clamping block (24) and an elastic element (25). The clamping block (24) is used to clamp the mobile terminal (5) onto the placement platform (1). The elastic element (25) is located on the side of the clamping block (24) away from the placement platform (1). The elastic element (25) is used to apply an elastic force to the clamping block (24) to move it toward the placement platform (1); or, The elastic clamping structure (22) includes a clamping block (24) and an elastic element (25). The clamping block (24) is used to clamp the mobile terminal (5) onto the placement platform (1). The clamping block (24) is elastic. The elastic element (25) is located on the side of the clamping block (24) away from the placement platform (1). The elastic element (25) is used to apply an elastic force to the clamping block (24) to move it toward the placement platform (1).
6. The mobile terminal back cover removal device according to claim 3, characterized in that, The mobile terminal back cover removal device also includes a material picking mechanism (40), which includes a second suction cup (41) and a material picking drive device (42). The second suction cup (41) is used to adsorb the back cover (51). The output end of the material picking drive device (42) is connected to the second suction cup (41) and can drive the second suction cup (41) to move closer to or away from the placement platform (1). The fixing mechanism (20) includes a clamping drive device (26), the output end of which is connected to the elastic clamping structure (22) and can drive the elastic clamping structure (22) to move closer to or away from the placement platform (1).
7. The mobile terminal back cover removal device according to claim 6, characterized in that, The mobile terminal back cover removal device includes an installation structure (43), which includes a first installation plate (44), a second installation plate (45), and a third installation plate (46). The first installation plate (44), the second installation plate (45), and the third installation plate (46) are arranged opposite to each other. The first installation plate (44) is connected to the third installation plate (46), and the second installation plate (45) is movably disposed between the first installation plate (44) and the third installation plate (46). The material handling drive device (42) is installed on the machine base (10), and the output end of the material handling drive device (42) is connected to the first mounting plate (44). The second suction cup (41) is set on the first mounting plate (44). The clamping drive device (26) is mounted on the third mounting plate (46), and the output end of the clamping drive device (26) is connected to the second mounting plate (45). The elastic clamping structure (22) is mounted on the second mounting plate (45).
8. The mobile terminal back cover removal device according to claim 6, characterized in that, The elastic clamping structure (22) is located close to the anti-retraction structure (21), and the second suction cup (41) is located on the side of the elastic clamping structure (22) away from the anti-retraction structure (21).
9. The mobile terminal back cover removal device according to any one of claims 3-8, characterized in that, The separation mechanism (30) includes a first separation mechanism (31), which includes a first separation drive device (311) and a push block (32). The push block (32) is inclined and abuts against the end of the rear cover (51) away from the stop structure (21). The output end of the first separation drive device (311) is connected to the push block (32) and is used to drive the push block (32) to move obliquely upward so that the side of the rear cover (51) away from the stop structure (21) separates from the middle frame (53) and has a gap; or, The separation mechanism (30) includes a first separation mechanism (31), which includes a first separation drive device (311) and a first separation plate (33). The output end of the first separation drive device (311) is connected to the first separation plate (33) and is used to drive the first separation plate (33) to insert between the back cover (51) away from the anti-retraction structure (21) and the middle frame (53) so that there is a gap between the back cover (51) and the middle frame (53).
10. The mobile terminal back cover removal device according to claim 9, characterized in that, The surface of the pusher (32) that abuts against the rear cover (51) is formed as an arc-shaped surface (321).
11. The mobile terminal back cover removal device according to claim 9, characterized in that, The separation mechanism (30) further includes a second separation mechanism (34), which includes a second separation drive device (341), a third separation drive device (342), and a second separation piece (35). The output end of the second separation drive device (341) is connected to the second separation piece (35) and is used to drive the second separation piece (35) to insert into the gap. The output end of the third separation drive device (342) is connected to the second separation drive device (341) and is used to drive the second separation drive device (341) and the second separation piece (35) to move between the first separation mechanism (31) and the anti-retraction structure (21) so that the side (511) of the back cover (51) is separated from the middle frame (53).
12. The mobile terminal back cover removal device according to claim 11, characterized in that, The second separation mechanism (34) includes a mounting base (36), a guide rail (37) and a guide block (38). The second separation drive device (341) is mounted on the mounting base (36). The drive end of the third separation drive device (342) is connected to the mounting base (36). The guide rail (37) is set on the machine base (10). The guide block (38) is mounted on the mounting base (36) and slidably connected to the guide rail (37).
13. The mobile terminal back cover removal device according to claim 9, characterized in that, The mobile terminal back cover removal device includes a position detection device installed on the machine base (10), which is used to detect the relative position of the mobile terminal (5) with the push block (32) or the first separation piece (33).
14. The mobile terminal back cover removal device according to claim 9, characterized in that, The mobile terminal back cover removal device also includes a pressure sensor, which is disposed on the push block (32) or the first separation piece (33). The pressure sensor is used to detect the pressure received by the push block (32) or the first separation piece (33) when it comes into contact with the mobile terminal (5).
15. A method for disassembling the back cover of a mobile terminal, characterized in that, The mobile terminal back cover removal device according to any one of claims 1-14 comprises: The mobile terminal (5) is clamped between the back cover (51) and the screen of the mobile terminal (5). Separate the back cover (51) of the mobile terminal (5) from the middle frame (53) of the mobile terminal (5).