Mobile terminal and shell assembly thereof

Abstract

The present application relates to a mobile terminal and its shell assembly, the shell assembly including a back cover having an appearance surface and a decorative member mounted on the back cover; the appearance surface includes a first plane surface and a second curved surface, the second surface being connected to an edge of the first surface; the decorative member has a joint surface for joining with the appearance surface, the joint surface including a first joint surface and a second joint surface, at least a portion of the first joint surface is joined to the first surface, and the second joint surface is joined to the second surface; the second joint surface is a curved surface. In the shell assembly, by making all or part of the first joint surface join to the first surface, and the second joint surface join to the second surface, the first joint surface and the second joint surface cooperate to achieve a stable connection of the decorative member to the appearance surface of the back cover, thereby omitting complex fixings and avoiding their occupation of the space inside the back cover, providing a larger space for the installation of functional components inside the back cover, and making full use of the space inside the back cover.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a mobile terminal and a shell assembly thereof. Background Art

[0002] For regular mobile phones, such as the attached Figure 1 As shown, the back cover 110 is provided with a mounting hole 111, into which a decorative piece 120 is mounted, which serves as a decorative element and is used to secure the camera. Typically, the peripheral edge of the decorative piece 120 extends into the mounting hole 111, and the decorative piece 120 is assembled to the back cover 110 via a complex fixing piece 130. However, the complex fixing piece 130 takes up space inside the back cover 110, hindering the full utilization of the internal space of the phone. Summary of the Invention

[0003] Based on this, it is necessary to provide a shell assembly that fully utilizes the space inside the back cover, and also provide a mobile terminal.

[0004] A shell assembly comprising:

[0005] a back cover having an appearance surface, the appearance surface including a planar first surface and a curved second surface, the second surface being connected to an edge of the first surface; and

[0006] A decorative part is installed on the back cover; the decorative part has a joint surface joined to the appearance surface, the joint surface includes a first joint surface and a second joint surface, at least part of the first joint surface is joined to the first surface, and the second joint surface is joined to the second surface; the second joint surface is a curved surface.

[0007] In one embodiment, a boss is provided on the second joint surface. The boss is flexible and can be deformed under pressure to fill the gap between the second joint surface and the second surface.

[0008] In one embodiment, along a direction perpendicular to the second joint surface, the height of the boss protruding from the second joint surface is 0.03 mm to 0.1 mm; along a bending direction of the second joint surface, the width of the boss is less than or equal to 0.07 mm.

[0009] In one embodiment, the second joining surface includes a first area, which is located on a side of the boss away from the first joining surface; a projection width of the first area on a projection plane is 0.1 mm, and the projection plane is parallel to the first surface.

[0010] In one embodiment, the second joint surface includes a second area, and the second area is located on a side of the boss close to the first joint surface; the projection widths of the first area and the second area on the projection plane are equal.

[0011] In one embodiment, the bonding surface includes a third bonding surface bonded to the first surface, and the third bonding surface is connected to the second bonding surface to form a ring surrounding the first bonding surface; the boss extends from the connection between the second bonding surface and the third bonding surface to the third bonding surface and the thickness gradually decreases.

[0012] In one embodiment, the bonding surface includes a fourth bonding surface, the fourth bonding surface is located between the first bonding surface and the second bonding surface, and at least a portion of the fourth bonding surface is bonded to the second surface.

[0013] In one embodiment, the second joint surface is higher than the fourth joint surface; the fourth joint surface and the first joint surface are separated by a stopper.

[0014] In one embodiment, the decorative piece is a plastic piece, and the boss is integrally formed with the decorative piece.

[0015] In one embodiment, the shell assembly includes a decorative cover, which is formed on a side of the decorative component facing away from the rear cover, and is a hardware component or a ceramic component.

[0016] In one embodiment, the decorative piece is a hardware piece or a ceramic piece; a groove is formed on the second joint surface, and part of the boss is accommodated in the groove and bonded to the decorative piece.

[0017] A mobile terminal includes the above-mentioned shell assembly.

[0018] In the above-mentioned shell assembly, by making all or part of the first joint surface join to the first surface, and the second joint surface join to the second surface, the first joint surface and the second joint surface cooperate to achieve a stable connection of the decorative part on the appearance surface of the back cover, so that complex fixing parts can be omitted to avoid their occupation of the space inside the back cover, thereby providing a larger space for the installation of functional components inside the back cover, so that the space inside the back cover is fully utilized. Furthermore, compared with the solution in which the decorative part is only installed on the first surface, by providing a second joint surface on the decorative part that joins with the second surface, the decorative part can be made larger, so as to have a stronger appearance expression and achieve a better visual effect. Furthermore, the second joint surface is a curved surface that can fit with the second surface, which can help to reduce the gap between the second joint surface and the second surface, so as to highlight the sophistication of the appearance design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly of a conventional rear cover and decorative parts;

[0020] Figure 2 A partial schematic diagram of a shell assembly according to an embodiment of the present application;

[0021] Figure 3 for Figure 2 An exploded schematic diagram of the shell assembly shown;

[0022] Figure 4 for Figure 2 A cross-sectional view of the shell assembly along the AA direction;

[0023] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 6 for Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 7 for Figure 2 A schematic diagram of the partial structure of the decorative component in the shell assembly from another perspective;

[0026] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at E in the middle. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0030] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0031] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] As used herein, a "communication terminal" (or simply "terminal") includes, but is not limited to, a device configured to receive / transmit communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., to a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," "wireless terminal," or "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that may combine a cellular radiotelephone with data processing, fax, and data communication capabilities; a PDA that may include a radiotelephone, a pager, Internet / Intranet access, a web browser, a notepad, a calendar, and / or a global positioning system (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

[0034] This application protects a shell assembly and a mobile terminal including the shell assembly. The mobile terminal may be a smartphone, tablet computer, game console, learning machine, etc. The shell assembly is described in detail below using a smartphone as an example.

[0035] Specifically, the mobile terminal includes a shell component and a functional device. Figure 2 and Figure 3 As shown, the housing assembly 200 includes a back cover 210 and a decorative member 220. The back cover 210 has an inner side surface 211 and an outer surface 212. A mounting hole 213 is formed in the back cover 210, extending from the inner side surface 211 to the outer surface 212. Functional components (not shown) include a power supply and a camera. The power supply corresponds to the inner side surface 211 of the back cover 210. The camera is electrically connected to the power supply and is positioned corresponding to the mounting hole 213. The decorative member 220 is mounted on the outer surface 212 of the back cover 210, covering the mounting hole 213 to secure and protect the camera. The decorative member 220 and the outer surface 212 together serve a decorative purpose. In other embodiments, the functional components can also be replaced with other electronic components with specific functions. In some embodiments, the mobile terminal includes a middle frame. The middle frame includes a middle plate and a frame connected to the periphery of the middle plate. The back cover 210 is connected to the frame, and the functional components are mounted on the middle plate and confined within the space enclosed by the middle frame and the inner side surface 211.

[0036] Combine Figure 3 、 Figure 4 、 Figure 5 and Figure 7As shown, specifically, for the back cover 210, its appearance surface 212 includes a flat first surface 214 and a curved second surface 215, and the second surface 215 is connected to the edge of the first surface 214. It should be noted that the curved surface design of the second surface 215 can make the appearance surface 212 present a better 3D effect. In addition, in the embodiment where the mobile terminal includes a middle frame, the periphery of the first surface 214 is connected to the second surface 215, that is, the second surface 215 is annularly surrounding the first surface 214, and the second surface 215 is a convex arc surface extending toward the frame and smoothly connected to the first surface 214.

[0037] Specifically, the decorative member 220 has a joining surface 221 that joins with the exterior surface 212. The joining surface 221 includes a first joining surface 222 and a second joining surface 223. At least a portion of the first joining surface 222 joins with the first surface 214, and the second joining surface 223 joins with the second surface 215. The second joining surface 223 is a curved surface. It is understood that the decorative member 220 is connected to the exterior surface 212, and the surface of the decorative member 220 that joins with the exterior surface 212 is the joining surface 221. In this embodiment, the entire first joining surface 222 joins with the first surface 214. In other embodiments, a portion of the first joining surface 222 joins with the first surface 214, while the remainder joins with the second surface 215. In some embodiments, the first joining surface 222 can be joined to the first surface 214 by gluing. The second joining surface 223 can also be joined to the first surface 214 by gluing.

[0038] In the above-described housing assembly 200, by fully or partially engaging the first joining surface 222 with the first surface 214 and the second joining surface 223 with the second surface 215, the first joining surface 222 and the second joining surface 223 cooperate to achieve a stable connection between the decorative member 220 and the exterior surface 212 of the rear cover 210. This eliminates the need for complex fasteners that would otherwise occupy the space inside the rear cover 210, thereby providing more space for the installation of functional components inside the rear cover 210 and fully utilizing the space inside the rear cover 210. Furthermore, compared to a solution in which the decorative member 220 is only mounted on the first surface 214, by providing the decorative member 220 with the second joining surface 215, the decorative member 220 can be made larger, resulting in a more expressive appearance and a better visual effect. Furthermore, the second joint surface 223 is a curved surface that can fit with the second surface 215 , which can help reduce the gap between the second joint surface 223 and the second surface 215 to highlight the refinement of the appearance design.

[0039] Combine Figures 4 to 6As shown, in this embodiment, a boss 230 is provided on the second joining surface 223. The boss 230 is flexible and can deform under pressure to fill the gap between the second joining surface 223 and the second surface 215. By providing the flexible boss 230, the gap between the second joining surface 223 and the second surface 215 caused by machining errors can be filled after the boss 230 is deformed. This prevents a visible gap between the second joining surface 223 and the second surface 215, which would affect the appearance, and also prevents foreign matter from entering the gap between the two, making it difficult to clean. Furthermore, the boss 230 is provided on the second joining surface 223 to connect with the decorative member 220, allowing it to be installed on the back cover 210 along with the decorative member 220, simplifying and simplifying the installation process. In this embodiment, under pressure, the second joining surface 223 and the second surface 215 respectively abut against the deformed boss 230 on either side to achieve engagement. It is understood that if the second joining surface 223 and the second surface 215 are joined by gluing, the shape of the glue cannot be controlled. If the glue is applied unevenly, the gap between the second joining surface 223 and the second surface 215 cannot be evenly filled. In addition, the glue is likely to overflow outside the second joining surface 223, which will negatively affect the appearance. In this embodiment, the provision of the boss 230 can facilitate even filling of the gap between the second joining surface 223 and the second surface 215 and help control the deformation of the boss 230.

[0040] It should be noted that the pressure that initially deforms the boss 230 is the external force acting on the decorative member 220, pressing it against the rear cover 210. When the decorative member 220 is stably mounted on the rear cover 210, the pressure that maintains the boss 230 in its deformed state is the bonding force between the bonding surface 221 and the exterior surface 212. For example, the bonding force between the first bonding surface 222 and the first surface 214, which is bonded by adhesive, maintains the boss 230 in its deformed state.

[0041] Specifically, along a direction perpendicular to the second joint surface 223, the height of the boss 230 protruding from the second joint surface 223 is 0.03 mm to 0.1 mm; along the curvature of the second joint surface 223, the width of the boss 230 is less than or equal to 0.07 mm. By designing the height and width of the boss 230, the boss 230 can effectively fill the gap between the second joint surface 223 and the second surface 215 after deformation. It will be understood that the deformation of the boss 230 specifically refers to the deformation of the boss 230 toward the side closer to the first joint surface 222 and away from the first joint surface 222. If the cross-sectional area of ​​the boss 230 is too small, it will not be sufficient to fill the gap between the second joint surface 223 and the second surface 215. If the cross-sectional area of ​​the boss 230 is too large, the degree of deformation of the boss 230 will be affected, and there is a risk of deforming the second joint surface 223.

[0042] It should be noted that since the second joint surface 223 is a curved surface, the specific meaning of "the direction perpendicular to the second joint surface 223" is: the direction indicated by a predetermined perpendicular line passing through a predetermined point on the second joint surface 223 and perpendicular to the tangent plane of the predetermined point. Therefore, the specific meaning of the height of the boss 230 is: the maximum distance from the predetermined perpendicular line to the predetermined point on the boss 230. It can be understood that any point on the boss 230 has a corresponding predetermined perpendicular line and a predetermined point. Therefore, among the countless distance values ​​obtained between any point on the boss 230 and its corresponding predetermined point, the maximum distance value is the height of the boss 230. When the boss 230 is made of silicone, its height can be set to 0.03mm to 0.1mm. When the boss 230 is made of PC or PA, its height can be set to 0.03mm to 0.07mm. It can be understood that the height of the boss 230 can be set to values ​​such as 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, and 0.1mm.

[0043] It should be noted that the specific meaning of "cross section of the boss 230" is: the cross section obtained by cutting the boss 230 from the mounting hole 213 to the edge of the back cover 210 in a plane perpendicular to the first surface 214, that is, the cross section of the boss 230 at Figure 6 The "width of boss 230" specifically means the maximum arc length between any two points on the cross section of boss 230, drawn parallel to second joining surface 223. The width of boss 230 is less than or equal to 0.07 mm, and can be set to values ​​such as 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, or 0.07 mm.

[0044] like Figure 6As shown, specifically in this embodiment, the boss 230 is a strip-shaped structure with a quadrilateral cross-section, which is surrounded by a bottom surface 231, a top surface 232, a first side surface 233, and a second side surface 234. Furthermore, the bottom surface 231 coincides with a portion of the second joint surface 223, the top surface 232 is opposite the bottom surface 231, and the first side surface 233 and the second side surface 234 are connected between the bottom surface 231 and the top surface 232, wherein the first side surface 233 is close to the first joint surface 222, and the second side surface 234 is away from the first joint surface 222. Furthermore, the top surface 232 is an arcuate surface parallel to the bottom surface 231. Thus, the distance D1 between the top surface 232 and the bottom surface 231 is the height of the boss 230. The first side surface 233 is perpendicular to the bottom surface 231, and the second side surface 234 is inclined relative to the first side surface 233, so that the boss 230 forms a tapered shape that gradually tapers from the bottom surface 231 to the top surface 232, thereby facilitating deformation of the boss 230. Thus, the arc length D2 between the intersection of the bottom surface 231 and the first side surface 233 and the intersection of the bottom surface 231 and the second side surface 234 in the cross section of the boss 230 is the width of the boss 230. This configuration allows the boss 230 to be easily formed while also being able to compensate for the gap between the second joint surface 223 and the second surface 215 after deformation. It should be noted that in other embodiments, the cross-sectional shape of the boss 230 may also be triangular or inverted trapezoidal.

[0045] See again Figures 4 to 6Furthermore, the second joining surface 223 includes a first region 223a, which is located on the side of the boss 230 away from the first joining surface 222. It is understood that when the boss 230 is undeformed, it does not completely cover the second joining surface 223, and the first region 223a is formed at the edge of the second joining surface 223 away from the first joining surface 222. The projected width D3 of the first region 223a on the projection plane parallel to the first surface 214 is 0.1 mm. Setting the projected width of the first region 223a to 0.1 mm ensures that the boss 230 does not overflow outside the decorative member 220 after deformation under pressure, and prevents the gap between the first region 223a and the second surface 215 from being fully filled. It is understood that if the projected width is set too large, the boss 230 will not be able to fully fill the gap between the first region 223a and the second surface 215 after deformation. If the projection width is set too small, the boss 230 will overflow outside the first area 223a after deformation, which will have a negative impact on the appearance. Therefore, while ensuring that the boss 230 remains between the second joint surface 223 and the second surface 215 after deformation, it is necessary to minimize the projection width so that the deformed boss 230 exactly corresponds to the edge of the first area 223a, so that the structural fineness is better presented, thereby improving the quality of the product and ensuring that the mobile terminal meets the quality demands of high-end consumers.

[0046] Furthermore, the second joint surface 223 includes a second region 223b, which is located on the side of the boss 230 near the first joint surface 222. It is understood that the second region 223b and the first region 223a are located on either side of the boss 230. The second region 223b is close to the first joint surface 222, while the first region 223a is far away from the first joint surface 222. The projected width of the first region 223a on the projection plane is D4. The projected widths of the first region 223a and the second region 223b on the projection plane are equal, so D4 = D3 = 0.01 mm. This configuration ensures that the boss 230 will not overflow beyond the second joint surface 223 after deformation under pressure, and the gap between the second region 223b and the second surface 215 will not be fully filled. It is understood that if the projected width is set too large, the boss 230 will not be able to fully fill the gap between the second region 223b and the second surface 215 after deformation. If the projected width is set too small, the boss 230 will overflow outside the second area 223b after deformation, which may affect the connection stability between the decorative member 220 and the back cover 210. Therefore, while ensuring that the boss 230 remains between the second joint surface 223 and the second surface 215 after deformation, the projected width needs to be minimized so that the deformed boss 230 exactly corresponds to the edge of the second area 223b.

[0047] Combine Figure 4 、 Figure 7 and Figure 8 As shown, specifically, the bonding surface 221 includes a third bonding surface 224 that bonds to the first surface 214. The third bonding surface 224 and the second bonding surface 223 are connected to form a ring surrounding the first bonding surface 222. The boss 230 extends from the connection between the second bonding surface 223 and the third bonding surface 224 toward the third bonding surface 224, with a thickness gradually decreasing. It can be understood that because the area of ​​the first surface 214 on the back cover 210 is larger than the area of ​​the second surface 215, and the area of ​​the second surface 215 is insufficient to mount the decorative member 220, the decorative member 220 is partially mounted on the first surface 214 and the other portion is mounted on the second surface 215. Regarding the side of the decorative member 220 facing the back cover 210, the annular area at the periphery is enclosed by the second bonding surface 223 and the third bonding surface 224. The second bonding surface 223 is the area of ​​this annular area that bonds with the curved second surface 215, and the third bonding surface 224 is the area of ​​this annular area that bonds with the first surface 214. Furthermore, it can be understood that the third joint surface 224 and the second joint surface 223 have two connection locations, forming a ring. The main portion 235 of the boss 230 extends in a strip shape between the two connection locations. The end portion 236 of the boss 230 gradually extends from the main portion 235 toward the third joint surface 224, and its thickness gradually decreases. If the connection between the third joint surface 224 and the first surface 214 is referred to as the first set of connections, and the connection between the second joint surface 223 and the second surface 215 is referred to as the second set of connections, the cooperation between the end portion 236 of the boss 230 and the main portion 235 can achieve a transition from the first set of connections to the second set of connections, fully filling the slight gap between the two sets of connections.

[0048] In this embodiment, the third joining surface 224 is joined to the first surface 214 by gluing. Specifically, the first joining surface 222 is annular, and the area on the first surface 214 that joins with the first joining surface 222 is arranged around the mounting hole 213. In this way, the first joining surface 222 and the first surface 214 are stably joined around the mounting hole 213 and within the annular area enclosed by the third joining surface 224 and the second joining surface 223, thereby improving the connection stability of the decorative member 220 to the rear cover 210.

[0049] Combine Figure 4 、 Figure 7 and Figure 8As shown, specifically, the joint surface 221 includes a fourth joint surface 225, which is located between the first joint surface 222 and the second joint surface 223. At least a portion of the fourth joint surface 225 is joined to the second surface 215. This arrangement allows the fourth joint surface 225 to serve as a transition between the first joint surface 222 and the second joint surface 223, providing a greater pressure to maintain the deformation of the boss 230 and achieve stable compression of the boss 230 by the second joint surface 223. In this embodiment, the entire fourth joint surface 225 is joined to the second surface 215. In other embodiments, only a portion of the fourth joint surface 225 may be joined to the second surface 215.

[0050] Furthermore, the second joining surface 223 is higher than the fourth joining surface 225, and the fourth joining surface 225 is separated from the first joining surface 222 by a stopper 226. It can be understood that the fourth joining surface 225 is the bottom wall of the groove structure formed on the side of the decorative member 220 facing the rear cover 210. When the fourth joining surface 225 is bonded to the second surface 215 by gluing, the groove can accommodate the glue and limit the flow of the glue, thereby achieving a stable connection between the fourth joining surface 225 and the second joining surface 223. By dividing the first joining surface 222, the fourth joining surface 225, and the second joining surface 223 into multiple spaced-apart areas, they can achieve a better bonding effect without interference after being bonded to the exterior surface 212, ensuring a stable connection between the decorative member 220 and the rear cover 210. Furthermore, the fourth joint surface 225 is an arc surface parallel to the second surface 215, so that the distance from each point on the fourth joint surface 225 to the second surface 215 can be kept equal, so that when glue is applied between the fourth joint surface 225 and the second surface 215, the thickness of the glue is maintained uniform, further improving the connection stability between the fourth joint surface 225 and the second surface 215.

[0051] Specifically, the joint surface 221 includes a fifth joint surface 229 that engages with the first surface 214. The fifth joint surface 229 and the fourth joint surface 225 together form a ring surrounding the first joint surface 222. It is understood that within the annular region enclosed by the fifth joint surface 229 and the fourth joint surface 225, the fifth joint surface 229 is the region that engages with the first surface 214, while the fourth joint surface 225 is the region that engages with the second surface 215. The stopper 226 extends in an annular shape to separate the annular region enclosed by the fifth joint surface 229 and the fourth joint surface 225 from the first joint surface 222. The fifth joint surface 229 is bonded to the first surface 214 by adhesive.

[0052] In this embodiment, the decorative member 220 is a plastic member, and the boss 230 is integrally formed with the decorative member 220. It will be appreciated that the back cover 210 is commonly made of plastic, such as PC (polycarbonate) or PA (polyamide). Using a plastic material for the decorative member 220 facilitates a stable connection between the decorative member 220 and the back cover 210. Because the boss 230 is flexible, if the decorative member 220 is a plastic member, the boss 230 can be integrally formed with the second joining surface 223, thereby improving the stability of the connection between the two and eliminating the need for assembly, thereby increasing production efficiency.

[0053] Furthermore, the shell assembly 200 includes a decorative cover 240, which is formed on the side of the decorative member 220 facing away from the back cover 210. The decorative cover 240 is a metal part or a ceramic part. Compared with plastic materials, components made of metal and ceramic materials have greater hardness and can present a better appearance, achieving a cool decorative effect. Therefore, by providing the decorative cover 240 on the side of the decorative member 220 facing away from the back cover 210, the decorative cover 240 can provide a better decorative effect. Specifically, when the decorative cover 240 is a metal part or a ceramic part, its material is relatively hard and can be adhered to the decorative member 220 by gluing. In order to improve the stability of the connection, a groove 227 can also be provided on the decorative member 220 to adhere the decorative cover 240 into the groove 227.

[0054] In other embodiments, the decorative member 220 is a hardware or ceramic member. Since the decorative member 220 is made of a relatively hard material, a large gap will inevitably exist between the processed second joint surface 223 and the second surface 215. In this case, a groove can be formed on the second joint surface 223, so that part of the boss 230 is accommodated in the groove and adhered to the decorative member 220, thereby providing the flexible boss 230 on the second joint surface 223. In other embodiments, the flexible boss 230 can also be formed in the groove of the second joint surface 223 by double-shot injection molding.

[0055] Combine Figure 3 and Figure 7 As shown, in this embodiment, the decorative member 220 is further provided with a plurality of spaced positioning blocks 228a. The plurality of positioning blocks 228a can cooperate to abut against the inner wall of the mounting hole 213, thereby quickly positioning the decorative member 220 when it is installed on the rear cover 210, facilitating assembly. Furthermore, the decorative member 220 is further provided with a pressing block 228b, which is received in the mounting hole 213 to press against the camera, thereby securing the camera.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A shell assembly, characterized in that: include: A back cover having an appearance surface, the appearance surface including a planar first surface and a curved second surface, the second surface being connected to an edge of the first surface; and A decorative part installed on the exterior surface of the rear cover; The decorative component has a joint surface joined to the exterior surface, the joint surface includes a first joint surface and a second joint surface, the first joint surface is annular, at least part of the first joint surface is joined to the first surface, the second joint surface is joined to the second surface; the second joint surface is a curved surface.

2. The shell assembly according to claim 1, wherein A boss is provided on the second joint surface. The boss is flexible and can be deformed under pressure to fill the gap between the second joint surface and the second surface.

3. The shell assembly according to claim 2, wherein: Along a direction perpendicular to the second joint surface, the height of the boss protruding from the second joint surface is 0.03 mm to 0.1 mm; along a bending direction of the second joint surface, the width of the boss is less than or equal to 0.07 mm.

4. The shell assembly according to claim 3, wherein: The second joint surface includes a first area, which is located on a side of the boss away from the first joint surface; a projection width of the first area on a projection plane is 0.1 mm, and the projection plane is parallel to the first surface.

5. The shell assembly according to claim 4, wherein: The second joint surface includes a second area, and the second area is located on a side of the boss close to the first joint surface; the projection widths of the first area and the second area on the projection plane are equal.

6. The shell assembly according to claim 2, wherein: The bonding surface includes a third bonding surface bonded to the first surface, the third bonding surface is connected to the second bonding surface to form a ring surrounding the first bonding surface; the boss extends from the connection between the second bonding surface and the third bonding surface to the third bonding surface and the thickness gradually decreases.

7. The shell assembly according to claim 2, wherein: The bonding surface includes a fourth bonding surface, the fourth bonding surface is located between the first bonding surface and the second bonding surface, and at least a portion of the fourth bonding surface is bonded to the second surface.

8. The shell assembly according to claim 7, wherein: The second joint surface is higher than the fourth joint surface; the fourth joint surface and the first joint surface are separated by a stopper.

9. The shell assembly according to any one of claims 2 to 8, characterized in that The decorative piece is a plastic piece, and the boss is integrally formed with the decorative piece.

10. The shell assembly according to claim 9, wherein: The shell assembly includes a decorative cover, which is formed on a side of the decorative component facing away from the rear cover, and is a hardware component or a ceramic component.

11. The shell assembly according to any one of claims 2 to 8, characterized in that The decorative piece is a hardware piece or a ceramic piece; a groove is provided on the second joint surface, and part of the boss is accommodated in the groove and bonded to the decorative piece.

12. A mobile terminal, characterized in that: The invention comprises the shell assembly according to any one of claims 1 to 11.

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