Front cover structure of electronic product

By setting up double-layer reinforcements inside the phone's front shell and embedding them in the narrowing area, the strength of the front shell was improved, solving the problems of insufficient continuity and strength of metal bending parts in the prior art. The front shell successfully passed the three-bar bending test.

CN224684243UActive Publication Date: 2026-08-25SHENZHEN HONGTIDE TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522189177.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-16
Publication Date
2026-08-25
Estimated Expiration
2035-10-16

AI Technical Summary

Technical Problem

In the prior art, the uneven design of the sidewall of the mobile phone cover and the opening of the coaxial groove reduce the continuity and strength of the metal bending parts, making it difficult to pass the three-bar bending test.

Method used

The design employs a double-layer reinforcement system. By placing reinforcements within the frame, these reinforcements are embedded in the narrowed area and connected through a smooth transition, avoiding cutting and improving the strength and continuity of the shell.

Benefits of technology

The continuity and strength of the reinforcement were improved, and the shell was able to pass the three-bar test smoothly, thus improving the overall bending resistance of the shell.

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Abstract

The utility model relates to electronic product technical field and disclose an electronic product's face shell structure, including frame body and support subassembly, wherein, frame body has at least two long side frame, at least partial long side frame is provided on the narrowing area that contracts along its width direction and contracts, support subassembly includes support plate, support plate with frame body is connected, the side of support plate with long side frame is connected with reinforcing part, reinforcing part can embed in long side frame, wherein, reinforcing part includes with first side plate that support plate is connected, second side plate is connected on first side plate, interval is arranged between first side plate with second side plate, the interval distance of first side plate and second side plate reduces to make reinforcing part embed in the narrowing area of long side frame after any one of first side plate and second side plate bending towards another one. The utility model can make reinforcing part be integral and thus improve the strength of whole face shell.
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Description

Technical Field

[0001] This utility model belongs to the field of electronic product technology, specifically relating to a shell structure for an electronic product. Background Technology

[0002] The three-bar bend test for a single mobile phone casing is a specialized bending mechanics test conducted on a single casing unit (the casing itself only, excluding cushioning foam, screen, clip connectors, etc.) without any other components attached. It specifically tests the bending resistance of the casing's own material strength and structural design, eliminating interference from other assembled components. It is a key reliability verification method in the early stages of mobile phone casing development.

[0003] To enhance the strength of the faceplate and ensure it passes the aforementioned tests, related technologies incorporate support plates made of metal or other materials within the faceplate and embed reinforcing metal bends within the sidewalls of the faceplate to strengthen the overall structure, especially the sidewalls. However, these technologies suffer from the following problems: 1. Due to uneven design on the faceplate sidewalls, such as recessed areas and areas of inconsistent thickness, the metal bends in these technologies need to be cut at the junctions of recessed areas or thickness variations, or when converting multi-layer bends to single-layer bends. This disrupts the continuity of the metal bends and reduces strength. 2. The related technologies involve creating coaxial grooves on the sidewall surface of the faceplate to accommodate coaxial lines. These grooves occupy the height space of the sidewalls, limiting the height of the metal bends to within 2mm, thus restricting strength enhancement. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a casing structure for an electronic product.

[0005] The electronic product casing structure according to this utility model embodiment includes: a frame and a support assembly; The frame has at least two long sidewalls, and at least a portion of the long sidewalls are provided with narrowing areas that taper along their width direction; the support assembly includes a support plate, which is connected to the frame, and a reinforcement is connected to one side of the support plate that is connected to the long sidewalls, and the reinforcement can be embedded in the long sidewalls; The reinforcement includes a first side plate connected to the support plate, a second side plate connected to the first side plate, and a gap between the first side plate and the second side plate. After either the first side plate or the second side plate is bent toward the other, the distance of the gap is reduced so that the reinforcement is embedded in the narrowed area of ​​the long frame.

[0006] The front shell structure of the electronic product in this embodiment enhances the strength of the frame by setting reinforcements inside the frame. The reinforcements are set as double layers, and the transition between the double layers is smooth, which can adapt to the narrowing area on the frame and maintain the continuity of the reinforcements. This avoids the stress defects caused by traditional split reinforcements, improves the strength of the entire front shell, and enables it to pass the three-bar test smoothly.

[0007] In some embodiments, a recessed area is provided on the long frame along its thickness direction, a first connecting surface is provided at the connection between the first side plate and the second side plate, a recessed portion corresponding to the recessed area is provided on the first connecting surface, a second connecting surface is provided at the recessed portion, and the connection between the first connecting surface and the second connecting surface is a smooth transition.

[0008] In some embodiments, an intermediate plate is connected between the first side plate and the second side plate, and the first connecting surface is formed on the side of the intermediate plate facing the recessed area. The first connecting surface, the second connecting surface, a side surface of the first side plate that is connected to the first connecting surface, and a side surface of the second side plate that is connected to the first connecting surface form the outer covering surface of the reinforcement.

[0009] In some embodiments, any connection point between the first connecting surface, the second connecting surface, a side surface of the first side plate connected to the first connecting surface, and a side surface of the second side plate connected to the first connecting surface is a smooth transition.

[0010] In some embodiments, the width of the intermediate plate varies with the distance of the interval to make the outer covering surface a continuous, smooth surface.

[0011] In some embodiments, the reinforcement further includes a third side plate connected to the second side plate, wherein the included angle between the third side plate and the second side plate is 0-180 degrees.

[0012] In some embodiments, at least a portion of the third side plate is perpendicular to the second side plate; And / or, at least part of the third side plate is parallel to the second side plate.

[0013] In some embodiments, the support plate and the reinforcement are integrally formed, and at least a portion of the side of the support plate extends and is bent to form the first side plate, at least a portion of the side of the first side plate extends and is bent to form the second side plate, and at least a portion of the side of the second side plate extends and is bent to form the third side plate.

[0014] In some embodiments, the second side panel is disposed in the middle region of the long frame along the length direction of the long frame.

[0015] In some embodiments, the casing structure of the electronic product further includes a groove, which is disposed on the side wall surface of any one of the long frames facing the interior of the frame.

[0016] In some embodiments, the distance between the support components in the thickness direction is 2-3 mm; And / or, the distance of the second side plate along the length direction is 80-120 mm; And / or, the distance of the interval is 0-1 mm.

[0017] According to the electronic product casing structure of the above embodiment, on the one hand, by changing the position of the groove from the top to the side, the height of the reinforcing member embedded in the frame is increased, thereby improving the strength of the support assembly. On the other hand, by using continuous and smooth transitions at the deformation parts of the support assembly, such as the reduced gap between the two layers and the connection points of the recessed areas, the strength reduction caused by traditional slotted transitions or split designs is avoided, thus improving the strength of the support assembly and the overall casing. Furthermore, a third side plate or even more side plates can be designed for further enhancement as needed. Through the above structural design, the final casing can successfully pass the single-unit three-bar bend test. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the entire utility model.

[0019] Figure 2 This is an exploded view of the entire utility model.

[0020] Figure 3 This is a cross-sectional schematic diagram of the entire utility model.

[0021] Figure 4 This is a cross-sectional schematic diagram of the support component of this utility model.

[0022] Figure 5 This utility model Figure 2 A magnified view of a portion of the image.

[0023] Figure 6 This is an overall schematic diagram of the support component in some embodiments of this utility model.

[0024] Figure 7 This is a cross-sectional schematic diagram of the whole in some embodiments of this utility model.

[0025] Figure 8 This is a cross-sectional schematic diagram of the support component in some embodiments of this utility model.

[0026] Figure label: 1. Frame; 11. Long border; 111. Recessed area; 112. Narrowing area; 2. Support components; 21. Support plate; 22. Reinforcing member; 221. First side plate; 222. Second side plate; 223. Third side plate; 224. Intermediate plate; 2241. First connecting surface; 225. Spacing; 226. Recess; 2261. Second connecting surface; 3. Cable trays. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1 As shown, the casing structure of the electronic product according to an embodiment of the present invention includes a frame 1 and a support assembly 2. The frame 1 has at least two long sidewalls 11, and at least a portion of the long sidewalls 11 has a narrowing region 112 that tapers along its width direction. The support assembly 2 includes a support plate 21 connected to the frame 1. A reinforcement member 22 is connected to one side of the support plate 21 connected to the long sidewall 11, and the reinforcement member 22 can be embedded within the long sidewall 11. The reinforcement member 22 includes a first side plate 221 connected to the support plate 21, and a second side plate 222 connected to the first side plate 221. A gap 225 is provided between the first side plate 221 and the second side plate 222. After either the first side plate 221 or the second side plate 222 is bent towards the other, the distance of the gap 225 is reduced so that the reinforcement member 22 is embedded within the narrowing region 112 of the long sidewall 11.

[0029] In the electronic product casing structure of this embodiment, the casing can be applied to various electronic products such as mobile phones, tablets, and computers, and is generally embodied in the form of a mid-frame. The casing mainly consists of a frame 1 and a support component 2. The support component 2 is made of metal materials, such as aluminum alloy, titanium alloy, or steel, to achieve both lightweighting and increased casing strength. The attached figure of this embodiment shows the casing structure of a mobile phone. The frame 1 in the casing consists of two long sidewalls 11 and two short sidewalls. The support component 2 is placed inside the frame 1 so that the internal components of the mobile phone are fixed to the frame 1 and the support component 2. Generally, the support component 2 can be placed in the middle of the thickness direction of the frame 1 so that the screen is installed on one side of the support component 2 and the battery and other components are installed on the other side.

[0030] In this embodiment, the support component 2, with one end connected to the long frame 11 and the other to the short frame, can be embedded into the frame 1. Specifically, reinforcing members 22 are provided on both sides connected to the long frame 11. These reinforcing members 22 are embedded within the long frame 11 to enhance the strength of the faceplate along its entire length, thereby improving its overall strength and enabling it to pass the three-bar test. In this embodiment, the reinforcing member 22 consists of two layers: a first side plate 221 directly connected to the support plate 21, and a second side plate 222 connected to the first side plate 221, achieving a strong bond between the first and second side plates 221. (See also...) Figure 3 and Figure 4 A gap 225 is provided between the first side plate 221 and the second side plate 222. Since the long frame 11 has a certain width in the width direction and has a partially narrowed area 112, the gap 225 can be varied to accommodate changes in the width of the long frame 11. The gap distance is 0-1mm. In this example, when the gap 225 changes from wide to narrow, it is achieved by bending either the first side plate 221 or the second side plate 222 towards the other, or by bending both towards each other simultaneously, thereby ensuring the continuity of the first side plate 221 and the second side plate 222. In the industry, the area with the gap 225 is generally called the double-layer area, while the area without the gap 225 or with a small gap 225 corresponding to the narrowed area 112 is generally called the double-layer flattened area. In traditional processes, the double-layer area is directly cut to achieve the double-layer flattened area, which destroys the continuity and strength of the entire reinforcement 22. In this embodiment, the strength of the entire reinforcement 22 is ensured through continuous design.

[0031] In some embodiments, a recessed area 111 is provided on the long frame 11 along its thickness direction, and a first connecting surface 2241 is provided at the connection between the first side plate 221 and the second side plate 222. A recessed portion 226 corresponding to the recessed area 111 is provided on the first connecting surface 2241, and a second connecting surface 2261 is provided at the recessed portion 226. The connection between the first connecting surface 2241 and the second connecting surface 2261 is a smooth transition.

[0032] In the electronic product casing structure of this embodiment, a recessed portion 226 is provided on the reinforcing member 22 to accommodate the recessed area 111 on the long frame 11, thereby maximizing the distance of the long frame 11 in the thickness direction in other areas. By providing the recessed portion 226 only in the recessed area 111, the distance of the reinforcing member 22 in the thickness direction is reduced, thereby maximizing the amount of material used in the reinforcing member 22 within the limited long frame 11 to maximize the strength of the casing. In addition, in this embodiment, the connection of the recessed portion 226 is a smooth transition. Specifically, the first connecting surface 2241 is located at the connection between the first side plate 221 and the second side plate 222 in the direction facing the recessed area 111, while the connection between the second connecting surface 2261 and the first connecting surface 2241 on the recessed portion 226 is an arc transition, so that the entire recessed portion 226 and the reinforcing member 22 are in a continuous state rather than being achieved by traditional direct grooving. This embodiment can further improve the strength of the casing at the long frame 11.

[0033] In some specific embodiments, the reinforcement 22 may have a raised area to accommodate the protrusion of the frame, and the connection between the raised area and the reinforcement 22 is also a smooth transition. This improves the material usage and strength of the reinforcement 22.

[0034] In some embodiments, an intermediate plate 224 connects the first side plate 221 and the second side plate 222. A first connecting surface 2241 is formed on the side of the intermediate plate 224 facing the recessed area 111. The first connecting surface 2241, the second connecting surface 2261, a side wall of the first side plate 221 connected to the first connecting surface 2241, and a side wall of the second side plate 222 connected to the first connecting surface 2241 form the outer covering surface of the reinforcement 22. Any connection point between the first connecting surface 2241, the second connecting surface 2261, the side wall of the first side plate 221 connected to the first connecting surface 2241, and the side wall of the second side plate 222 connected to the first connecting surface 2241 is a smooth transition. The width of the intermediate plate 224 varies with the distance of the interval 225 to ensure a continuous and smooth outer covering surface.

[0035] In the casing structure of the electronic product of this embodiment, the first side plate 221 and the second side plate 222 are connected by an intermediate plate 224. The intermediate plate 224 is disposed on the side of the first side plate 221 and the second side plate 222 facing the recessed area 111, thereby forming a connecting structure between the first side plate 221 and the second side plate 222. This further makes the first side plate 221, the second side plate 222, and the intermediate plate 224 constitute a whole, improving the bending resistance of the entire casing. In addition, the connection points of the first side plate 221, the second side plate 222, and the intermediate plate 224 are all rounded, so that the entire first side plate 221, the second side plate 222, and the intermediate plate 224 form a continuous and smooth integral part. Especially when the distance 225 changes, the spacing of the intermediate plates 224 must also change accordingly to ensure that the entire outer covering surface is a continuous and smooth surface, and that there are no seams, protrusions, or depressions at the connection points, thereby improving the strength of the entire reinforcing member 22.

[0036] In some embodiments, the reinforcement 22 further includes a third side plate 223, which is connected to the second side plate 222, and the included angle between the third side plate 223 and the second side plate 222 is 0-180 degrees.

[0037] See appendix Figure 5 and attached Figure 8 Depending on the thickness of the long frame 11, if more side panels can be arranged, a third side panel 223, or even a fourth side panel, etc., can be added to maximize the number of side panels. Specifically, the orientation and length of the third side panel 223 can be adjusted appropriately based on the thickness of the long frame 11 to increase the material usage of the third side panel 223 and enhance the overall strength of the reinforcing member 22. The bending resistance is optimal when the orientation of the first side panel 221, second side panel 222, and third side panel 223 is in the thickness direction.

[0038] Specifically, in some embodiments, at least a portion of the third side plate 223 is perpendicular to the second side plate 222; And / or, at least part of the third side plate 223 is parallel to the second side plate 222. See Appendix Figure 3 The third side panel 223 is not provided within the front long frame 11, but is provided within the rear long frame 11, and is perpendicular to the second side panel 222. See Appendix. Figure 8 A third side plate 223, parallel to the second side plate 222, is disposed within the front long frame 11, and a third side plate 223, perpendicular to the second side plate 222, is disposed within the rear long frame 11. This arrangement fully utilizes the width of the long frame 11, increasing the material used for the reinforcing member 22 within the limited space of the long frame 11 and enhancing the overall strength of the shell.

[0039] In some embodiments, the support plate 21 and the reinforcement 22 are integrally formed, and at least a portion of the side of the support plate 21 is extended and bent to form a first side plate 221, at least a portion of the side of the first side plate 221 is extended and bent to form a second side plate 222, and at least a portion of the side of the second side plate 222 is extended and bent to form a third side plate 223.

[0040] In this embodiment, the entire support assembly 2 is integrally formed, which can be achieved by single stamping or multiple stamping. In other words, the first side plate 221, the second side plate 222, the third side plate 223, the middle plate 224, etc., are also integrally formed, achieved by single or multi-layer bending of the side of the support plate 21. This method improves processing efficiency, and the integral nature of the entire support assembly 2 can better improve the strength of the entire support assembly 2, further enhancing the overall strength of the shell. In some embodiments, the second side plate 222 is disposed in the middle region of the long frame 11 along the length direction of the long frame 11.

[0041] In this embodiment, the second side plate 222 is continuously arranged in the middle area of ​​the shell that is prone to bending. For example, the distance of the second side plate along the length direction is 80-120mm, which is reasonably designed according to the length of the frame. This area is also the three-bar test area, which can improve the bending strength of the shell while saving the material of the reinforcing member 22. In some embodiments, the casing structure of the electronic product in this embodiment further includes a wire groove 3, which is disposed on the side wall surface facing the interior of the frame 1 in any one of the long frame 11.

[0042] In the casing structure of the electronic product in this embodiment, by setting the wire groove 3 on the inner side of the long frame 11, the coaxial line can be arranged within the wire groove 3. Compared to the traditional method where the wire groove 3 is located on the upper side of the long frame 11, this embodiment avoids the wire groove 3 encroaching on the thickness of the long frame 11 when designed on the upper side. This allows for an increase in the distance in the thickness direction when the reinforcing member 22 is installed. The traditional reinforcing member 22 can only be 2mm in thickness direction, while this embodiment can be 3mm, thereby improving the strength of the casing.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An electronic product face cover structure, characterized in that, include: The frame (1) has at least two long sidewalls (11), and at least a portion of the long sidewalls (11) are provided with narrowing areas (112) that narrow along their width direction. Support component (2), the support component (2) includes a support plate (21), the support plate (21) is connected to the frame (1), and a reinforcement (22) is connected to one side of the support plate (21) that is connected to the long frame (11), the reinforcement (22) being embedded in the long frame (11); The reinforcement (22) includes a first side plate (221) connected to the support plate (21), and a second side plate (222) connected to the first side plate (221). A gap (225) can be provided between the first side plate (221) and the second side plate (222). After either the first side plate (221) or the second side plate (222) is bent toward the other, the distance of the gap (225) is reduced so that the reinforcement (22) is embedded in the narrowing area (112) of the long frame (11).

2. The face cover structure of the electronic product according to claim 1, wherein, At least a portion of the long frame (11) is provided with a recessed area (111) that is recessed along its thickness direction. The connection between the first side plate (221) and the second side plate (222) has a first connecting surface (2241). The first connecting surface (2241) is provided with a recessed portion (226) corresponding to the recessed area (111). The recessed portion (226) has a second connecting surface (2261) at its lower part. The connection between the first connecting surface (2241) and the second connecting surface (2261) is a smooth transition.

3. The face cover structure of the electronic product according to claim 2, wherein, An intermediate plate (224) is connected between the first side plate (221) and the second side plate (222). The intermediate plate (224) forms the first connecting surface (2241) on the side facing the recessed area (111). The first connecting surface (2241), the second connecting surface (2261), a side of the side wall of the first side plate (221) connected to the first connecting surface (2241), and a side of the side wall of the second side plate (222) connected to the first connecting surface (2241) form the outer covering surface of the reinforcement (22).

4. The face cover structure of the electronic product according to claim 3, wherein, The connection points of the first connecting surface (2241), the second connecting surface (2261), the side wall of the first side plate (221) connected to the first connecting surface (2241), and the side wall of the second side plate (222) connected to the first connecting surface (2241) are all smoothly connected.

5. The face cover structure of the electronic product according to claim 4, wherein, The width of the intermediate plate (224) varies with the distance of the interval (225) so that the outer covering surface is a continuous smooth surface.

6. The face cover structure of the electronic product according to claim 1, wherein, The reinforcement (22) also includes a third side plate (223), which is connected to the second side plate (222), and the included angle between the third side plate (223) and the second side plate (222) is 0-180 degrees.

7. The face cover structure of the electronic product according to claim 6, wherein, At least part of the third side plate (223) is perpendicular to the second side plate (222); And / or, at least part of the third side plate (223) is parallel to the second side plate (222).

8. The face cover structure of an electronic product according to claim 1, wherein, The support plate (21) and the reinforcement (22) are integrally formed. At least a portion of the side of the support plate (21) is extended and bent to form the first side plate (221). At least a portion of the side of the first side plate (221) is extended and bent to form the second side plate (222). At least a portion of the side of the second side plate (222) is extended and bent to form the third side plate (223).

9. The face cover structure of an electronic product according to claim 8, wherein, The second side plate (222) is disposed on the middle area of ​​the long frame (11) along the length direction of the long frame (11).

10. The face cover structure of an electronic product according to any one of claims 1-9, wherein, It also includes a wire groove (3), which is provided on the side wall surface facing the interior of the frame (1) in any of the long frame (11).