High-strength waterproof mobile phone middle frame

Abstract

The utility model relates to mobile phone accessory technical field discloses a waterproof type mobile phone middle frame of high strength, including middle frame body and install subassembly in the front, install subassembly contains screen installation cavity and battery compartment cavity. The middle frame body inside is integrated with reinforcing rib subassembly, sealing assembly and component mounting post. Reinforcing rib subassembly is composed of the transverse reinforcing rib fixed in the short side inboard wall, the longitudinal reinforcing rib fixed in the long side inboard wall and the corner reinforcing block located in the inboard corner. Sealing assembly contains the screen sealing groove along the screen installation cavity edge. The utility model through the reinforcing rib and corner reinforcing block of crisscross effectively disperses impact force, and the structure strength is significantly promoted, and simultaneously realizes independent closed loop protection to screen, battery and interface through multiple sealing structure, solves the problem that the existing middle frame is insufficient in strength and poor in waterproof tightness.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessories technology, and in particular to a high-strength waterproof mobile phone frame. Background Technology

[0002] With the rapid development of smartphone technology, users have placed dual demands on both thinness and durability in mobile phones. As the framework supporting core components such as the screen, motherboard, and battery, the mid-frame's structural strength directly affects the overall drop resistance of the device. However, in pursuit of extreme thinness and larger battery space, existing mobile phone mid-frames often reduce the size of the side walls and internal support structures. This makes the mid-frame highly susceptible to twisting, deformation, or even breakage when subjected to accidental drops or external pressure, thereby damaging the delicate internal electronic components.

[0003] Furthermore, waterproofing is also an important indicator of the quality of modern smartphones. Existing mid-frame structures have relatively simple waterproofing designs, typically relying solely on external adhesive sealing, lacking dedicated physical barriers for different internal cavities (such as the battery compartment) and openings (such as the charging port). When the external adhesive layer ages or loosens due to impact, moisture can easily seep in through screen gaps and port openings, leading to motherboard short circuits or battery damage.

[0004] Therefore, this utility model proposes a high-strength waterproof mobile phone frame to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-strength waterproof mobile phone frame, aiming to improve the problems in the existing technology where the mobile phone frame has insufficient structural rigidity, resulting in poor drop resistance, and lacks independent and effective physical sealing structures in key parts such as the screen, battery, and interface, resulting in low waterproof reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength waterproof mobile phone frame, comprising: a frame body, wherein an installation component is provided on the front side of the frame body; The mounting assembly includes a screen mounting cavity and a battery compartment cavity. The screen mounting cavity is located in the front area of ​​the mid-frame body, and the battery compartment cavity is located in the middle area of ​​the mid-frame body. The middle frame body also includes a reinforcing rib assembly, a sealing assembly, and component mounting posts; The reinforcing rib assembly includes transverse reinforcing ribs, longitudinal reinforcing ribs, and corner reinforcement blocks. The transverse reinforcing ribs are fixedly connected to the inner wall of the short side of the middle frame body, the longitudinal reinforcing ribs are fixedly connected to the inner wall of the long side of the middle frame body, and the corner reinforcement blocks are fixedly connected to the inner corner of the middle frame body.

[0007] Preferably, the sealing assembly includes a screen sealing groove, a battery compartment sealing protrusion, and an interface waterproof platform. The screen sealing groove is formed at the edge of the screen mounting cavity, the battery compartment sealing protrusion protrudes from the edge of the battery compartment cavity, and the interface waterproof platform is disposed at the interface opening on the side wall of the mid-frame body. The screen sealing groove is arranged in a closed loop around the circumference of the screen mounting cavity, and the opening of the screen sealing groove faces the outer front side of the mid-frame body.

[0008] Preferably, the battery compartment sealing protrusion is arranged in a closed loop along the opening contour of the battery compartment cavity, and the battery compartment sealing protrusion protrudes from the mounting plane of the battery compartment cavity to cooperate with the battery cover to form a compression seal.

[0009] Preferably, the interface waterproof platform surrounds the inner side of the interface opening on the side wall of the middle frame body, and the interface waterproof platform is formed as a retaining wall structure extending into the middle frame to prevent liquid from seeping into the interface gap.

[0010] Preferably, the component mounting post is fixedly connected to the inner bottom surface of the middle frame body, and the component mounting post is provided with threaded holes for locking the motherboard.

[0011] Preferably, the high-strength waterproof mobile phone frame further includes a back cover mounting assembly, which is disposed on the back side of the frame body and includes a flat back cover mounting surface for tightly fitting with the mobile phone back cover.

[0012] Preferably, the two sides of the corner reinforcement block are integrally formed and connected to the sidewall where the adjacent transverse reinforcing rib or longitudinal reinforcing rib is located.

[0013] Preferably, the transverse reinforcing ribs and the longitudinal reinforcing ribs extend along the height direction of the inner sidewall of the middle frame body and protrude from the surface of the inner sidewall.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting a reinforcing rib assembly consisting of transverse reinforcing ribs, longitudinal reinforcing ribs and corner reinforcing blocks inside the middle frame body, and by using a crisscrossing distribution and corner reinforcement design, a three-dimensional mechanical support skeleton is constructed. This solves the problems of deformation, breakage and stress concentration that easily occur in the middle frame of mobile phones when subjected to drops or lateral pressure in the prior art. It achieves the effect of significantly improving the overall structural rigidity of the middle frame, effectively dispersing external impact force, and protecting the internal core components from extrusion damage.

[0015] 2. This utility model solves the problem in the prior art where the mobile phone frame lacks targeted barrier structures at screen gaps, battery area and side interface, which makes it easy for moisture to enter. It sets up a screen sealing groove around the screen mounting cavity, a battery compartment sealing protrusion protruding from the edge of the battery compartment cavity, and an interface waterproof platform around the interface opening through the sealing component. With the fit of the back cover mounting surface, it achieves the effect of independent and closed-loop waterproof sealing for different functional areas, improves the waterproof level of the whole device, and does not affect the internal space layout. Attached Figure Description

[0016] Figure 1 A perspective view of a high-strength waterproof mobile phone frame proposed in this utility model; Figure 2 This is a schematic diagram of a high-strength waterproof mobile phone frame sealing component proposed in this utility model. Figure 3 This is a schematic diagram of an installation component for a high-strength waterproof mobile phone frame proposed in this utility model. Figure 4 This is a schematic diagram of the back cover mounting surface of a high-strength waterproof mobile phone frame proposed in this utility model.

[0017] Legend: 1. Mid-frame body; 2. Mounting components; 201. Screen mounting cavity; 202. Battery compartment cavity; 3. Rear cover mounting components; 301. Rear cover mounting surface; 4. Reinforcing rib components; 401. Horizontal reinforcing rib; 402. Vertical reinforcing rib; 403. Corner reinforcement block; 5. Sealing components; 501. Screen sealing groove; 502. Battery compartment sealing protrusion; 503. Interface waterproof platform; 6. Component mounting post. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 This utility model provides a high-strength waterproof mobile phone frame, which aims to solve the structural defects in the prior art, such as the mobile phone frame structure being prone to deformation when subjected to external impact, resulting in damage to internal components, and the lack of targeted independent sealing structures in key parts such as the screen, battery and interface, leading to poor waterproof performance.

[0020] The high-strength waterproof mobile phone frame includes a frame body 1 and a mounting component 2 located on the front side of the frame body 1. The frame body 1 serves as the supporting skeleton and core load-bearing structure of the entire mobile phone. It is manufactured in one piece using high-strength metal or composite materials to support all electronic components inside the mobile phone and resist external impacts. The mounting component 2 divides the front of the frame body 1 into different functional areas through structural partitioning to adapt to the assembly requirements of different modules.

[0021] Mounting component 2 includes a screen mounting cavity 201 located on the front of the mid-frame body 1 and a battery compartment cavity 202 located in the middle of the mid-frame body 1. The screen mounting cavity 201 is formed as a rectangular or irregularly shaped space recessed into the mid-frame body 1. The size of this space is precisely matched with the outline of the mobile phone display module to accommodate and fix the display component, ensuring that the screen is flush with the edge of the mid-frame or maintains a preset assembly gap after being embedded. The battery compartment cavity 202 is formed as a relatively independent deep groove structure, located on one side or below the screen mounting cavity 201, to securely place the mobile phone battery. The power module is separated from other heat-sensitive components by physical isolation, thereby building a basic hardware assembly platform on the mid-frame body 1.

[0022] It also includes a reinforcing rib assembly 4, a sealing assembly 5, and multiple component mounting posts 6.

[0023] The reinforcing rib assembly 4 includes a transverse reinforcing rib 401, a longitudinal reinforcing rib 402, and a corner reinforcement block 403. The transverse reinforcing rib 401 is fixedly connected to the inner side wall of the short side of the middle frame body 1 and extends along the length of the short side. The longitudinal reinforcing rib 402 is fixedly connected to the inner side wall of the long side of the middle frame body 1 and extends along the length of the long side. By increasing the material thickness or forming a raised ridge structure on the inner side of the originally weak side wall of the middle frame body 1, the transverse reinforcing rib 401 and the longitudinal reinforcing rib 402 significantly improve the bending section modulus of the side wall and prevent the middle frame from collapsing inward when subjected to lateral compression.

[0024] The corner reinforcement block 403 is fixedly connected to the inner corner of the middle frame body 1, filling the angle area between the adjacent transverse reinforcement ribs 401 and longitudinal reinforcement ribs 402 to form a triangular support or arc-shaped thickened structure, which is used to absorb the impact energy mainly concentrated at the four corners when falling, and quickly disperse the point force to the reinforcement ribs on both sides to avoid corner breakage.

[0025] The sealing assembly 5 includes a screen sealing groove 501, a battery compartment sealing protrusion 502, and an interface waterproof platform 503. The screen sealing groove 501 is formed at the edge of the screen mounting cavity 201, forming a continuous groove structure. This groove is used to fill waterproof glue or embed a waterproof sealing ring, so that a tight surface seal can be formed when the screen cover is combined with the middle frame body 1. The battery compartment sealing protrusion 502 protrudes from the edge of the battery compartment cavity 202, forming a water barrier wall that is higher than the surrounding plane. This structure cooperates with the battery compartment cover or battery encapsulation film to achieve a line seal by using the local high pressure generated by the protrusion structure to prevent liquid from seeping into the battery area.

[0026] The interface waterproof platform 503 is set at the interface opening on the side wall of the middle frame body 1, such as the inside of the Type-C interface or button hole, forming a three-dimensional step or dam structure surrounding the opening area, which is used to prevent trace amounts of liquid that seep in from the interface gap from spreading to the motherboard area, and achieves independent waterproofing at the interface with the dispensing process.

[0027] The component mounting posts 6 are fixedly connected to the inner bottom surface of the middle frame body 1 and are distributed in specific geometric positions in the motherboard mounting area. The component mounting posts 6 are cylindrical or prismatic metal bosses used to provide floating support for the motherboard and achieve screw tightening, avoiding direct contact between the motherboard and the bottom of the middle frame, while enhancing the rigid connection of the overall structure.

[0028] As a preferred embodiment, in order to improve the waterproof reliability and adhesive overflow control of screen bonding, the screen sealing groove 501 is arranged in a closed loop around the screen mounting cavity 201, and the groove opening of the screen sealing groove 501 faces the outer side of the front of the middle frame body 1, that is, the groove opening direction is perpendicular to the screen plane. This design allows the sealant to be evenly filled in the groove and distributed circumferentially when the screen is pressed, and the groove wall restricts the overflow of the sealant, thereby forming a complete and unbroken waterproof ring under the screen glass cover, effectively preventing external moisture from entering through the gaps at the screen edge.

[0029] As another preferred embodiment, the battery compartment sealing protrusion 502 is arranged in a closed loop along the opening contour of the battery compartment cavity 202, and the battery compartment sealing protrusion 502 protrudes from the mounting plane of the battery compartment cavity 202. The height of the protrusion structure is precisely calculated so that after the battery cover is locked or pasted, the battery compartment sealing protrusion 502 can be embedded in the flexible sealing layer of the cover or squeeze the sealant to form an interference fit, ensuring that even if the middle frame body 1 undergoes a slight elastic deformation, the sealing performance of the battery compartment area remains unaffected.

[0030] As a preferred embodiment, in order to solve the problem of the side interface being difficult to waterproof, the interface waterproof platform 503 surrounds the inside of the interface opening on the side wall of the middle frame body 1, and the interface waterproof platform 503 is formed as a barrier structure extending into the middle frame. This barrier structure physically encloses the interface component (such as a USB socket), so that the gap between the interface component and the middle frame body 1 is blocked by the interface waterproof platform 503. Any infiltrated liquid will be confined to the area enclosed by the waterproof platform and cannot flow to the sensitive circuits on the motherboard.

[0031] As a preferred embodiment, in order to ensure the stability of the motherboard locking and the electrical grounding performance, the component mounting post 6 is fixedly connected to the inner bottom surface of the middle frame body 1, and the component mounting post 6 is provided with a threaded hole for locking the motherboard. The threaded hole is machined by CNC tapping. With the help of metal screws, the motherboard is firmly pressed onto the top surface of the component mounting post 6. The multi-point fixing method improves the vibration resistance of the motherboard. At the same time, the component mounting post 6 itself can serve as a grounding point, connecting the ground wire of the motherboard to the metal middle frame body 1, thereby playing an electromagnetic shielding role.

[0032] As a preferred embodiment, in order to achieve a flat and waterproof back cover, a back cover mounting assembly 3 is provided on the back side of the mid-frame body 1. The back cover mounting assembly 3 includes a back cover mounting surface 301, which is a flat bonding surface. This surface is finely milled to form a continuous adhesive area around the back edge of the mid-frame body 1, which is used to support the back cover adhesive and ensure that there are no gaps or air bubbles when the back cover of the phone is bonded to the mid-frame body 1, thus forming the first waterproof and dustproof barrier on the back of the phone.

[0033] In a preferred embodiment, the two sides of the corner reinforcement block 403 are integrally formed and connected to the sidewalls where the adjacent transverse reinforcing ribs 401 or longitudinal reinforcing ribs 402 are located. That is, the middle frame body 1, the transverse reinforcing ribs 401, the longitudinal reinforcing ribs 402 and the corner reinforcement block 403 are made from the same piece of aluminum alloy by forging or CNC cutting, and there are no physical splicing gaps. This not only eliminates the hidden danger of stress concentration at the connection point, but also allows the impact force to be smoothly transmitted and dissipated between the various reinforcing structures.

[0034] As a preferred embodiment, in order to provide maximum bending stiffness within a limited body thickness, the transverse reinforcing ribs 401 and the longitudinal reinforcing ribs 402 extend along the height direction of the inner sidewall of the middle frame body 1 and protrude from the surface of the inner sidewall. The thickness of the reinforcing ribs gradually changes from the root of the sidewall to the top or remains constant, forming a mechanical cross section similar to an "I" beam or a "T" beam. Without occupying the battery and motherboard installation space, the ability of the middle frame body 1 to resist torsional deformation is significantly improved.

[0035] Working principle: The mid-frame body 1 is a load-bearing structure. The screen mounting cavity 201 and battery compartment cavity 202 of the mounting component 2 provide assembly space for the mobile phone screen and battery, respectively. The component mounting column 6 is used to fix core components such as the motherboard and improve the overall assembly stability. The horizontal reinforcing ribs 401 and vertical reinforcing ribs 402 of the reinforcing rib component 4 are distributed intersectingly inside the mid-frame to form a three-dimensional support structure. Together with the corner reinforcement blocks 403 at the four corners of the mid-frame body 1, it effectively disperses external impact and pressure, avoids local stress concentration that may lead to deformation or breakage, and significantly improves the overall structural strength of the mid-frame. The sealing component 5 and the back cover mounting component 2 work together to achieve waterproof protection. The screen sealing groove 501 surrounds the edge of the screen mounting cavity 201 and can be fitted with the sealing component to fit tightly with the edge of the screen, preventing water vapor from seeping in from the screen gaps. The battery compartment sealing protrusion 502 is arranged along the edge of the opening of the battery compartment cavity 202 and forms a sealing fit with the battery compartment cover to prevent water vapor from entering the battery area. The interface waterproof platform 503 is set around the interface opening of the middle frame body 1 to form a waterproof barrier structure to prevent water vapor from entering from the interface gaps. The back cover mounting surface 301 of the back cover mounting component 2 fits precisely with the back cover of the mobile phone, and together with the various sealing structures, forms a closed-loop protection to ensure that the middle frame has reliable waterproof performance, while not affecting the performance of high strength characteristics.

Claims

1. A high-strength waterproof mobile phone frame, comprising: The middle frame body (1) has a mounting component (2) on its front side. The mounting assembly (2) includes a screen mounting cavity (201) and a battery compartment cavity (202). The screen mounting cavity (201) is located in the front area of ​​the mid-frame body (1), and the battery compartment cavity (202) is located in the middle area of ​​the mid-frame body (1). The mid-frame body (1) is characterized in that it further includes a reinforcing rib assembly (4), a sealing assembly (5), and a component mounting post (6). The reinforcing rib assembly (4) includes a transverse reinforcing rib (401), a longitudinal reinforcing rib (402), and a corner reinforcement block (403). The transverse reinforcing rib (401) is fixedly connected to the inner wall of the short side of the middle frame body (1), the longitudinal reinforcing rib (402) is fixedly connected to the inner wall of the long side of the middle frame body (1), and the corner reinforcement block (403) is fixedly connected to the inner corner of the middle frame body (1).

2. The high-strength waterproof mobile phone frame according to claim 1, characterized in that, The sealing assembly (5) includes a screen sealing groove (501), a battery compartment sealing protrusion (502), and an interface waterproof platform (503). The screen sealing groove (501) is opened at the edge of the screen mounting cavity (201), the battery compartment sealing protrusion (502) protrudes from the edge of the battery compartment cavity (202), and the interface waterproof platform (503) is located at the side wall interface opening of the middle frame body (1). The screen sealing groove (501) is arranged in a closed loop around the screen mounting cavity (201), and the opening of the screen sealing groove (501) faces the outer front side of the middle frame body (1).

3. A high-strength waterproof mobile phone frame according to claim 2, characterized in that, The battery compartment sealing protrusion (502) is arranged in a closed loop along the opening contour of the battery compartment cavity (202), and the battery compartment sealing protrusion (502) protrudes out of the mounting plane of the battery compartment cavity (202).

4. A high-strength waterproof mobile phone frame according to claim 2, characterized in that, The interface waterproof platform (503) surrounds the inner side of the interface opening on the side wall of the middle frame body (1), and the interface waterproof platform (503) is formed as a retaining wall structure extending into the middle frame.

5. A high-strength waterproof mobile phone frame according to claim 1, characterized in that, The component mounting post (6) is fixedly connected to the inner bottom surface of the middle frame body (1), and the component mounting post (6) is provided with a threaded hole for locking the motherboard.

6. A high-strength waterproof mobile phone frame according to claim 1, characterized in that, The back side of the middle frame body (1) is provided with a rear cover mounting assembly (3), the rear cover mounting assembly (3) includes a rear cover mounting surface (301), the rear cover mounting surface (301) is a flat fitting plane.

7. A high-strength waterproof mobile phone frame according to claim 1, characterized in that, The corner reinforcement block (403) is integrally formed and connected to the side wall where the adjacent transverse reinforcing rib (401) or longitudinal reinforcing rib (402) is located.

8. A high-strength waterproof mobile phone frame according to claim 1, characterized in that, The transverse reinforcing rib (401) and the longitudinal reinforcing rib (402) extend along the height direction of the inner sidewall of the middle frame body (1) and protrude from the surface of the inner sidewall.

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