Backboard assembly structure and mobile phone

Abstract

This application provides a back panel assembly structure and a mobile phone. The back panel assembly structure includes a back panel body and a mid-frame. A mounting bracket is provided on one side of the back panel body for mounting a camera. The outer peripheral wall of the mounting bracket forms a limiting surface. The mid-frame includes a mid-frame body and a locking part. The periphery of the mid-frame body is glued to the side of the back panel body near the mounting bracket. The locking part is connected to the mid-frame body and surrounds the mounting bracket. The two opposing inner walls of the locking part in a first direction are configured to abut against the limiting surface, and the two opposing inner walls of the locking part in a second direction are also configured to abut against the limiting surface. The first direction and the second direction are in the same plane and perpendicular to each other. The aforementioned back panel assembly structure can increase the screen-to-body ratio of the mobile phone and improve the connection stability between the back panel and the mid-frame.

Description

Technical Field

[0001] This utility model relates to the field of mobile electronic device technology, and in particular to a backplane assembly structure and a mobile phone. Background Technology

[0002] When assembling the back panel of a mobile phone, clips are often set around the perimeter of the back panel to secure it to the mid-frame. An adhesive layer is then applied between the perimeter of the back panel and the mid-frame to ensure a stable and waterproof connection. For example, the utility model patent application CN201721271766.9 describes a method where the back panel is embedded in a groove in the frame for positioning. Even though the back panel has protruding clips that engage with these grooves, these protruding clips are relatively prone to fatigue fracture, affecting the stability of the connection between the back panel and the mid-frame. Furthermore, the grooves on the mid-frame used to accommodate the clips and secure the back panel to the frame occupy width, impacting the screen-to-body ratio of the phone. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a back panel assembly structure and a mobile phone that can increase the screen ratio of the mobile phone and improve the connection stability between the back panel and the mid-frame.

[0004] The objective of this utility model is achieved through the following technical solution: A back panel assembly structure includes a back panel body and a middle frame. A mounting bracket is provided on one side of the back panel body. The mounting bracket is used to mount a camera. The outer peripheral wall of the mounting bracket forms a limiting surface. The middle frame includes a middle frame body and a locking part. The periphery of the middle frame body is glued to the side of the back plate body near the mounting bracket. The locking part is connected to the middle frame body and surrounds the mounting bracket. The two opposite inner walls of the locking part in the first direction are configured to abut against the limiting surface, and the two opposite inner walls of the locking part in the second direction are configured to abut against the limiting surface. The first direction and the second direction are located in the same plane and are perpendicular to each other.

[0005] In one embodiment, the mounting portion is glued to the side of the backplate body closest to the mounting bracket.

[0006] In one embodiment, the peripheral wall of the mounting bracket is provided with a plurality of clearance notches, and the plurality of clearance notches are distributed along the circumference of the mounting bracket.

[0007] In one embodiment, a chamfer structure is provided at the intersection of the inner wall of the latching part and the side of the latching part near the back plate body. The width of the chamfer structure is less than the thickness of the latching part, so that the two opposing inner walls of the latching part in the first direction at least partially abut against the limiting surface, and the two opposing inner walls of the latching part in the second direction at least partially abut against the limiting surface.

[0008] In one embodiment, the chamfer structure is a C-shaped chamfer structure or an R-shaped chamfer structure.

[0009] In one embodiment, the width of the chamfered structure is 1 / 3 to 2 / 3 of the thickness of the locking part.

[0010] In one embodiment, the back panel comprises, in the thickness direction, a transparent composite plate, a thermochromic ink layer, and a cover ink layer that are stacked and connected together, and the periphery of the middle frame body is glued to the cover ink layer.

[0011] In one embodiment, the transparent composite panel includes a laminated acrylic layer and a polycarbonate layer, the polycarbonate layer being connected to the thermochromic oil film layer.

[0012] In one embodiment, a hardened layer is stacked on the side of the acrylic layer away from the polycarbonate layer.

[0013] A mobile phone includes a camera and a back panel assembly structure as described in any of the above embodiments, wherein the camera is mounted in the mounting bracket and exposed on the back panel.

[0014] Compared with the prior art, the present invention has at least the following advantages: The back panel assembly structure of this utility model allows the outer peripheral wall of the mounting bracket for mounting the camera on the back panel body to form a limiting surface. This is combined with a locking part connected within the middle frame body, which surrounds the mounting bracket. Adjustments are made to the engagement between the locking part and the mounting bracket so that the two opposing inner walls of the locking part in the first direction are both configured to abut against the limiting surface, and the two opposing inner walls of the locking part in the second direction are also configured to abut against the limiting surface. The first and second directions are located in the same plane and perpendicular to each other, meaning the locking part is fixed in the area enclosed by the limiting surface of the outer peripheral wall of the mounting bracket in the x-axis and y-axis directions. Furthermore, the periphery of the middle frame body is glued to the side of the back panel body closest to the mounting bracket, meaning the locking part is fixed in the upper limit of the z-axis direction on the back panel. This achieves a stable connection between the middle frame and the back panel. Because the mounting bracket and limiting part have good structural stability, the connection stability between the back panel and the middle frame is effectively improved. In addition, the absence of a groove in the middle frame is beneficial for increasing the screen-to-body ratio of the mobile phone. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the backplate assembly structure according to one embodiment of the present utility model; Figure 2 for Figure 1 A partial view of the backplate assembly structure shown; Figure 3 for Figure 1 Exploded view of the backplate assembly structure shown; Figure 4 This is a schematic diagram of the hierarchical structure of the back plate according to one embodiment of the present invention. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] This application provides a back panel assembly structure. The back panel assembly structure includes a back panel body and a middle frame. A mounting bracket is provided on one side of the back panel body for mounting a camera. The outer peripheral wall of the mounting bracket forms a limiting surface. The middle frame includes a middle frame body and a locking part. The periphery of the middle frame body is glued to the side of the back panel body near the mounting bracket. The locking part is connected to the middle frame body and surrounds the mounting bracket. The two opposing inner walls of the locking part in a first direction are configured to abut against the limiting surface, and the two opposing inner walls of the locking part in a second direction are also configured to abut against the limiting surface. The first direction and the second direction are in the same plane and perpendicular to each other.

[0021] The aforementioned back panel assembly structure allows the outer peripheral wall of the mounting bracket for mounting the camera on the back panel body to form a limiting surface. This, combined with the locking part connected within the middle frame body, surrounds the mounting bracket. Adjustments are made to the fit between the locking part and the mounting bracket so that both inner walls of the locking part in the first direction are configured to abut against the limiting surface, and both inner walls in the second direction are also configured to abut against the limiting surface. The first and second directions are in the same plane and perpendicular to each other, meaning the locking part is fixed in the area enclosed by the limiting surface of the outer peripheral wall of the mounting bracket in both the x-axis and y-axis directions. Furthermore, the periphery of the middle frame body is glued to the side of the back panel body closest to the mounting bracket, thus fixing the locking part in the back panel in the z-axis direction. This achieves a stable connection between the middle frame and the back panel. Because the mounting bracket and limiting component have good structural stability, the connection stability between the back panel and the middle frame is effectively improved. In addition, the absence of a groove in the middle frame is beneficial for increasing the screen-to-body ratio of the mobile phone.

[0022] To better understand the backplane assembly structure of this application, the following further explanation is provided: Please refer to the following: Figures 1 to 3 One embodiment of the back panel assembly structure 10 includes a back panel body 100 and a middle frame 200. A mounting bracket 300 is provided on one side of the back panel body 100 for mounting a camera. The outer peripheral wall of the mounting bracket 300 forms a limiting surface 301. The middle frame 200 includes a middle frame body 210 and a locking part 220. The periphery of the middle frame body 210 is glued to the side of the back panel body 100 near the mounting bracket 300. The locking part 220 is connected inside the middle frame body 210 and surrounds the mounting bracket 300. The two opposing inner walls of the locking part 220 in the first direction a are configured to abut against the limiting surface 301, and the two opposing inner walls of the locking part 220 in the second direction b are configured to abut against the limiting surface 301. The first direction a and the second direction b are located in the same plane and are perpendicular to each other.

[0023] The aforementioned backplate assembly structure 10 arranges the outer peripheral wall of the mounting bracket 300 for mounting the camera on the backplate body 100 to form a limiting surface 301. This, in conjunction with the locking part 220 connected within the middle frame body 210, and with the locking part 220 surrounding the mounting bracket 300, allows for adjustments to the fit between the locking part 220 and the mounting bracket 300. This ensures that both inner walls of the locking part 220 in the first direction a are configured to abut against the limiting surface 301, and both inner walls of the locking part 220 in the second direction b are also configured to abut against the limiting surface 301. The first direction a and the second direction b are located in the same plane and are perpendicular to each other. The locking part 220 is fixed in the upper limit of the x-axis and y-axis directions within the area enclosed by the limiting surface 301 of the outer peripheral wall of the mounting bracket 300. It is further bonded to the periphery of the middle frame body 210 on the side of the back plate body 100 near the mounting bracket 300, that is, the locking part 220 is fixed in the upper limit of the z-axis direction on the back plate. This achieves a better stable connection between the middle frame 200 and the back plate. Moreover, since the mounting bracket 300 and the limiting part have good structural stability, the connection stability between the back plate and the middle frame 200 is effectively improved. In addition, the setting of the groove at the middle frame 200 is avoided, which is conducive to improving the screen ratio of the mobile phone.

[0024] Please refer to the following: Figures 1 to 3 In one embodiment, the side of the mounting part 220 near the back plate body 100 is glued to the side of the back plate body 100 near the mounting bracket 300, which further improves the connection stability of the back plate to the middle frame 200 on the z-axis.

[0025] Please refer to the following: Figures 1 to 3 In one embodiment, the peripheral wall of the mounting bracket 300 is provided with a plurality of clearance notches 302. The plurality of clearance notches 302 are distributed along the circumference of the mounting bracket 300, so that the limiting surface 301 is a discontinuous surface. While ensuring the firmness of the limiting between the back plate and the middle frame 200 in the x-axis direction and the y-axis direction, it is beneficial to achieve the thinness of the mobile phone.

[0026] In one embodiment, a chamfer structure is provided at the intersection of the inner wall of the latching part and the side of the latching part near the back plate body. The width of the chamfer structure is less than the thickness of the latching part, so that the two opposing inner walls of the latching part in the first direction at least partially abut against the limiting surface, and the two opposing inner walls of the latching part in the second direction at least partially abut against the limiting surface. This facilitates the guide of the mounting bracket into the latching part and improves assembly efficiency.

[0027] In one embodiment, the chamfer structure is a C-shaped chamfer structure or an R-shaped chamfer structure. Further, the width of the chamfer structure is 1 / 3 to 2 / 3 of the thickness of the locking part, which can be understood as the chamfer structure having a specification of C45°×X, where X is 1 / 3 to 2 / 3 of the thickness of the locking part. Alternatively, it can be understood as the chamfer structure having a specification of RY, where Y is 1 / 3 to 2 / 3 of the thickness of the locking part. This improves assembly efficiency while ensuring the secure positioning of the back plate and the middle frame in the x-axis and y-axis directions.

[0028] Please see Figure 4 In one embodiment, the back panel, in its thickness direction, sequentially comprises a transparent composite panel, a thermochromic ink layer, and a cover ink layer, with the periphery of the middle frame body adhered to the cover ink layer. Further, the thermochromic ink layer is an acrylic UV film layer, enabling the back panel to change color with temperature variations. Further, the transparent composite panel comprises a laminated acrylic layer and a polycarbonate layer, with the polycarbonate layer connected to the thermochromic ink film layer. Further, a hardening layer is laminated on the side of the acrylic layer away from the polycarbonate layer, increasing the hardness of the back panel and thus reducing scratches. Further, the specific manufacturing process of the back panel is: composite panel → logo → thermochromic ink printing → cover ink → external texture imprinting → CNC processing. Further, the specific manufacturing process of the back panel is: composite panel → logo → transfer printing → electroplating → thermochromic ink printing → cover ink → external texture imprinting → CNC processing.

[0029] This application also provides a mobile phone. The mobile phone includes a camera and a back panel assembly structure according to any of the above embodiments, wherein the camera is mounted within a mounting bracket and exposed on the back panel. Further details are also available in the following documents. Figures 1 to 3 In this embodiment, the back panel assembly structure 10 includes a back panel body 100 and a middle frame 200. A mounting bracket 300 is provided on one side of the back panel body 100 for mounting a camera. The outer peripheral wall of the mounting bracket 300 forms a limiting surface 301. The middle frame 200 includes a middle frame body 210 and a locking part 220. The periphery of the middle frame body 210 is glued to the side of the back panel body 100 near the mounting bracket 300. The locking part 220 is connected inside the middle frame body 210 and surrounds the mounting bracket 300. The two opposing inner walls of the locking part 220 in the first direction a are configured to abut against the limiting surface 301, and the two opposing inner walls of the locking part 220 in the second direction b are configured to abut against the limiting surface 301. The first direction a and the second direction b are located in the same plane and are perpendicular to each other.

[0030] The aforementioned mobile phone adopts a back panel assembly structure, which is beneficial for increasing the screen-to-body ratio and improving the assembly stability of the phone.

[0031] Compared with the prior art, the present invention has at least the following advantages: The backplate assembly structure 10 of this utility model arranges the outer peripheral wall of the mounting bracket 300 for mounting the camera on the backplate body 100 to form a limiting surface 301, which cooperates with the locking part 220 connected inside the middle frame body 210. The locking part 220 is arranged around the mounting bracket 300. The fit between the locking part 220 and the mounting bracket 300 is adjusted so that the two opposing inner walls of the locking part 220 in the first direction a are both configured to abut against the limiting surface 301, and the two opposing inner walls of the locking part 220 in the second direction b are both configured to abut against the limiting surface 301. The first direction a and the second direction b are located in the same plane and are perpendicular to each other. The locking part 220 is fixed in the upper limit of the x-axis and y-axis directions within the area enclosed by the limiting surface 301 of the outer peripheral wall of the mounting bracket 300. It is further bonded to the periphery of the middle frame body 210 on the side of the back plate body 100 near the mounting bracket 300, that is, the locking part 220 is fixed in the upper limit of the z-axis direction on the back plate. This achieves a better stable connection between the middle frame 200 and the back plate. Moreover, since the mounting bracket 300 and the limiting part have good structural stability, the connection stability between the back plate and the middle frame 200 is effectively improved. In addition, the setting of the groove at the middle frame 200 is avoided, which is conducive to improving the screen ratio of the mobile phone.

[0032] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A backplate assembly structure comprising a backplate main body and a middle frame, characterized in that, A mounting bracket is provided on one side of the back panel body. The mounting bracket is used to mount a camera, and the outer peripheral wall of the mounting bracket forms a limiting surface. The middle frame includes a middle frame body and a locking part. The periphery of the middle frame body is glued to the side of the back plate body near the mounting bracket. The locking part is connected to the middle frame body and surrounds the mounting bracket. The two opposite inner walls of the locking part in the first direction are configured to abut against the limiting surface, and the two opposite inner walls of the locking part in the second direction are configured to abut against the limiting surface. The first direction and the second direction are located in the same plane and are perpendicular to each other.

2. The backsheet assembly structure according to claim 1, wherein The mounting part is glued to the side of the back plate body near the mounting bracket.

3. The backsheet assembly structure according to claim 1, wherein The mounting bracket has multiple clearance notches on its peripheral wall, and the multiple clearance notches are distributed along the circumference of the mounting bracket.

4. The backsheet assembly structure according to claim 1, wherein The inner wall of the latching part and the side of the latching part near the back plate body are provided with a chamfer structure. The width of the chamfer structure is less than the thickness of the latching part, so that the two opposing inner walls of the latching part in the first direction at least partially abut against the limiting surface, and the two opposing inner walls of the latching part in the second direction at least partially abut against the limiting surface.

5. The backplate assembly structure according to claim 4, characterized in that, The chamfer structure is either a C-type chamfer structure or an R-type chamfer structure.

6. The backplate assembly structure according to claim 4, characterized in that, The width of the chamfered structure is 1 / 3 to 2 / 3 of the thickness of the locking part.

7. The backsheet assembly structure according to claim 1, wherein The back panel comprises, in the thickness direction, a transparent composite plate, a thermochromic ink layer, and a bottom cover ink layer, which are stacked and connected in sequence. The periphery of the middle frame body is glued to the bottom cover ink layer.

8. The backsheet assembly structure according to claim 7, wherein The transparent composite panel includes an acrylic layer and a polycarbonate layer that are stacked together, and the polycarbonate layer is connected to the thermochromic ink layer.

9. The backsheet assembly structure according to claim 8, wherein A hardening layer is stacked on the side of the acrylic layer away from the polycarbonate layer.

10. A handset, comprising: The device includes a camera and a back panel assembly structure as described in any one of claims 1 to 9, wherein the camera is mounted within the mounting bracket and exposed on the back panel.

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