CN114006965A

CN114006965A - Mobile terminal and shell assembly thereof

Info

Publication number: CN114006965A
Application number: CN202111259703.2A
Authority: CN
Inventors: 荣玉杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-02-01

Abstract

The present application relates to a mobile terminal and a case assembly thereof. The shell component comprises a rear cover and a decorative ring; the rear cover is provided with an appearance surface and an inner side surface which are oppositely arranged, a mounting hole is formed in a penetrating mode, and the inner wall surface and the inner side surface which enclose the mounting hole are connected through a first inclined surface; the decorative ring is externally arranged on the rear cover, and part of the decorative ring can extend into the mounting hole; the decorative ring is provided with a first joint surface which is glued with the appearance surface and a second joint surface which is glued with the first inclined surface; the second joint surface and the first inclined surface form a glue dispensing groove in a surrounding mode, and the glue dispensing groove gradually shrinks along the direction from the inner side surface to the appearance surface to form a V shape. In the shell assembly, the decorative ring is externally arranged on the rear cover, so that the inner side space of the rear cover can be fully utilized, the first joint surface is glued to the appearance surface, the second joint surface is glued to the first inclined surface, the second joint surface and the first inclined surface form a V-shaped glue dispensing groove, and glue injected into the glue dispensing groove and the first inclined surface form a reverse buckling structure, so that the connection reliability of the decorative ring and the rear cover is improved.

Description

Mobile terminal and shell assembly thereof

Technical Field

The present application relates to the field of electronic devices, and more particularly, to a mobile terminal and a housing assembly thereof.

Background

As shown in fig. 1, a mounting hole 111 is formed in a rear cover 110 of a conventional mobile phone, and a decorative ring 120 for fixing a camera and playing a decorative role is installed at the mounting hole 111. Typically, the skirt 121 of the bezel 120 is glued to the inner side of the rear cover 110 to achieve assembly with the rear cover 110. However, the skirt 121 and the adhesive 130 both occupy the space inside the rear cover 110, which makes the thickness of the whole mobile phone larger and is not favorable for thinning the mobile phone without changing other devices inside the mobile phone.

Disclosure of Invention

In view of the above, it is desirable to provide a case assembly that makes full use of the space inside the rear cover, and also to provide a mobile terminal.

In one aspect, the present invention provides a housing assembly comprising:

the rear cover is provided with an appearance surface and an inner side surface which are oppositely arranged along the thickness direction, a mounting hole is penetratingly formed, and the inner wall surface which surrounds the mounting hole is connected with the inner side surface through a first inclined surface; and

the decorative ring is externally arranged on the rear cover, and part of the decorative ring can extend into the mounting hole; the decorative ring is provided with a first joint surface which is glued with the appearance surface and a second joint surface which is glued with the first inclined surface; the second joint surface and the first inclined surface form a glue dispensing groove in a surrounding mode, and the glue dispensing groove gradually shrinks along the direction from the inner side surface to the appearance surface to form a V shape.

Among the above-mentioned shell subassembly, through adorning the circle external packing in the back lid to make through the mode of gluing and adorn the circle and be connected with the back lid, thereby can omit complicated mounting, in order to avoid its occupation to the inboard space of back lid, and then for the installation of the inboard functional device of back lid provides great space, make the inboard space of back lid obtain make full use of. In addition, decorate circle and back lid equipment back, first joint face is glued and is connect in the outward appearance face, thereby constitute the first way guarantee of being connected between decoration circle and the back lid, furthermore, through setting up the second composition surface, and make and enclose into the adhesive deposite groove between second composition surface and the first inclined plane, after injecting glue in the adhesive deposite groove, can make second composition surface and first inclined plane glue, thereby constitute the second way guarantee of being connected between decoration circle and the back lid, and then improve the joint strength who decorates circle and back lid, reach the purpose of reliable connection. In addition, glue in the glue dispensing groove can form a reverse buckling structure with the first inclined plane after solidification, so that the part of the decorative ring stretching into the mounting hole is blocked along the thickness direction of the rear cover and is separated from the mounting hole, the purpose of preventing the decorative ring from being loosened from the rear cover can be still achieved when the first guarantee fails, and the connection reliability of the decorative ring and the rear cover is improved.

In one aspect, the present invention provides a mobile terminal comprising the above-described housing assembly.

Among the above-mentioned mobile terminal, because decorate the circle external packing in the back lid, can avoid taking the inboard space of back lid, for the installation of the inboard functional device of back lid provides great space, make the inboard space of back lid obtain make full use of, so can make mobile terminal's complete machine thickness less, satisfy the requirement of slimming.

Drawings

FIG. 1 is a schematic view of a conventional rear cover assembled with a bezel;

FIG. 2 is a schematic cross-sectional view of a portion of a shell assembly according to an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the structure at A in the shell assembly of FIG. 2;

FIG. 4 is a graphical illustration of geometric parameters of the associated bevel in the configuration of FIG. 3;

FIG. 5 is a schematic view of the structure shown in FIG. 3 with the back cover omitted;

FIG. 6 is an enlarged schematic view of the structure at B in the shell assembly of FIG. 2;

FIG. 7 is a graphical illustration of geometric parameters of the associated bevel in the configuration of FIG. 6;

fig. 8 is a schematic view of a part of the structure of the case assembly shown in fig. 2.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in many ways different from those described herein, and similar modifications may be made by those skilled in the art without departing from the spirit of the present application, and the present application is therefore not limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above" or "over" a second feature may be directly or obliquely above the second feature, or simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "below," and "beneath" a second feature may be directly or obliquely under the first feature or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As used herein, a "communication terminal" (or simply "terminal") includes, but is not limited to, a device that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for 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 arranged to communicate over 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; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

The application protects a shell assembly and a mobile terminal comprising the shell assembly. The mobile terminal can be a smart phone, a tablet computer, a game machine, a learning machine and the like. The housing assembly is described in detail below with a smart phone as an example.

Specifically, the mobile terminal includes a case assembly and a functional device. As shown in fig. 2, the case assembly 10 includes a rear cover 100 and a bezel 200. The rear cover 100 has an inner surface 110 and an outer surface 120 facing each other in a thickness direction thereof, and has a mounting hole 130 formed therethrough. The functional device (not shown) includes a power supply and a camera, the power supply corresponds to the inner side surface 110 of the rear cover 100, the camera is electrically connected with the power supply and is arranged corresponding to the mounting hole 130, the decorative ring 200 is mounted on the rear cover 100 and covers the mounting hole 130 so as to fix the camera and protect the camera. In addition, the decorative ring 200 can also play a decorative role. In other embodiments, the functional device may be replaced by other electronic components having specific functions. In some embodiments, the mobile terminal includes a middle frame. The middle frame comprises a middle plate and a frame connected to the periphery of the middle plate. The rear cover 100 is connected to the bezel, and the functional device is mounted on the middle plate and is limited in a space surrounded by the middle plate and the inner side surface 110.

Referring to fig. 2 and 3, in particular, the bezel 200 is externally mounted to the rear cover 100, and a portion of the bezel 200 can protrude into the mounting hole 130. Rear cover 100 is connected to inner surface 110 via first inclined surface 140 at inner wall surface 131 enclosing mounting hole 130. The decorative ring 200 has a first bonding surface 210 bonded to the exterior surface 120 and a second bonding surface 220 bonded to the first inclined surface 140, the second bonding surface 220 and the first inclined surface 140 form a dispensing slot 230, and the dispensing slot 230 gradually shrinks in a direction from the inner side 110 to the exterior surface 120 to form a "V" shape.

The phrase "the bezel 200 is externally attached to the rear cover 100" means that the bezel 200 is attached to the rear cover 100 from the side of the outer surface 120. As shown in fig. 2, the direction defining the Z-axis is the thickness direction of the rear cover 100.

To the case subassembly 10 of this application, through adorning circle 200 external dress in back lid 100, and make through the mode of gluing decorate circle 200 and be connected with back lid 100, thereby can omit complicated mounting, in order to avoid its occupation to the inboard space of back lid 100, and then for the installation of the inboard functional device of back lid 100 provides great space, make the inboard space of back lid 100 obtain make full use of, so can make the mobile terminal's that has this case subassembly 10 complete machine thickness less, satisfy the requirement of slimming. In addition, after the decoration ring 200 is assembled with the rear cover 100, the first joint surface 210 is glued to the appearance surface 120, so that a first guarantee of connection between the decoration ring 200 and the rear cover 100 is formed, further, by arranging the second joint surface 220 and forming the glue dispensing groove 230 between the second joint surface 220 and the first inclined surface 140 in a surrounding manner, after glue is injected into the glue dispensing groove 230, the second joint surface 220 and the first inclined surface 140 can be glued, so that a second guarantee of connection between the decoration ring 200 and the rear cover 100 is formed, so that the connection strength between the decoration ring 200 and the rear cover 100 is improved, and the purpose of reliable connection is achieved. In addition, after the glue in the glue dispensing groove 230 is solidified, the glue and the first inclined surface 140 can form an inverted buckle structure, so that the part of the decorative ring 200 extending into the mounting hole 130 is blocked from being separated from the mounting hole 130 along the thickness direction of the rear cover 100, the purpose of preventing the decorative ring 200 from being loosened from the rear cover 100 can be achieved when the first guarantee fails, and the connection reliability of the decorative ring 200 and the rear cover 100 is improved.

Further, it can be understood that when the bezel 200 is externally installed on the rear cover 100, if the bezel 200 and the rear cover 100 are connected by only the first joint surface 210 and the appearance surface 120 being glued, there are two problems:

first, to ensure the stable connection between the first joint surface 210 and the appearance surface 120, the area of the decorative ring 200 that is glued to the appearance surface 120 needs to be enlarged, that is, the area of the first joint surface 210 is enlarged, so that the decorative ring 200 has a wider black edge, which is not favorable for the decorative ring 200 to highlight the appearance expressive force. In this application, through set up two departments and glue between circle 200 and back lid 100 decorating, can also effectively guarantee to decorate circle 200 and the stable of back lid 100 and be connected under the narrower circumstances of first composition surface 210 setting, also help reducing the black border width of decorating circle 200 simultaneously, be favorable to decorating the protruding outward appearance expressive force of circle 200, promote the competitiveness of product.

Secondly, when the first bonding surface 210 is bonded to the appearance surface 120, the overflow of glue will affect the appearance of the product, so that the yield of the product is reduced. In this application, through set up two places between circle 200 and back lid 100 and glue, can set up less circumstances in first composition surface 210 department point volume of gluing, glue through second composition surface 220 and first inclined plane 140 and promote the reliability that circle 200 and back lid 100 are connected. Meanwhile, since the dispensing groove 230 corresponds to the inner side of the rear cover 100, a large dispensing amount can be set when injecting the glue, and there is no problem that the appearance of the product is affected by the overflow of the glue.

In order to avoid the problem of cracking of the inner wall surface 131 of the mounting hole 130 during the process of machining the rear cover 100, it is usually selected to provide chamfers at the junctions between the inner wall surface 131 of the mounting hole 130 and the inner side surface 110 of the rear cover 100, and between the inner wall surface 131 of the mounting hole 130 and the outer surface 120 of the rear cover 100. It is understood that the first slope 140 is a chamfer between the inner wall surface 131 of the mounting hole 130 and the inner side surface 110 of the rear cover 100.

As shown in fig. 2 to 5, specifically, an included angle between the first inclined surface 140 and the thickness direction is γ, γ equals to 45 °, a height of the first inclined surface 140 projected in the thickness direction is H, and H satisfies 0.15mm ≦ H ≦ 0.2 mm. Specifically, H may be set to a value of 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, or the like. It can be understood that the thickness of the rear cover 100 is generally 0.5 mm-0.7 mm, and the height of the first inclined plane 140 in the thickness direction is set to be 0.15 mm-0.2 mm, so that the first inclined plane 140 and the second joint surface 220 can be ensured to have a proper bonding height, stable bonding with the second joint surface 220 due to too small height is avoided, or the height is too large, so that the inner wall surface 131 of the mounting hole 130 is greatly damaged, and the flowing of glue in the dispensing groove 230 along the thickness direction is not facilitated.

In addition, in other embodiments, the angle γ between the first inclined surface 140 and the thickness direction may be other angular values as long as 0 ° < γ < 90 ° is ensured. However, it should be noted that if γ is too large, the first inclined surface 140 cannot provide a proper bonding height for the second bonding surface 220, and if γ is too small, the glue in the glue dispensing groove 230 cannot form a good reverse buckle with the first inclined surface 140 after being solidified, which is not favorable for the reliable connection between the bezel 200 and the rear cover 100.

Note that, in the case where the first inclined surface 140 is inclined in a certain direction, the included angle with the thickness direction is an acute angle formed between the first inclined surface 140 and the Z axis. The included angles mentioned below are all acute angles and are not described in detail.

In some embodiments, the second engaging surface 220 is a slope with an opposite slope to the first slope 140, so that the glue dispensing groove 230 is opened to a larger extent to facilitate the injection of the glue water into the glue dispensing groove 230 and to form a strong second guarantee. Further, the included angle alpha between the second joint face 220 and the thickness direction satisfies that alpha is more than or equal to 45 degrees and less than 90 degrees. Specifically, α may be set to 45 °, 55 °, 65 °, 75 °, 85 °, and the like. It should be noted that, in other embodiments, the second engaging surface 220 may be parallel to the thickness direction, and the first inclined surface 140 is inclined to make the dispensing slot 230 form a "V" shape.

In the embodiment where the second bonding surface 220 is an inclined surface having an inclination direction opposite to that of the first inclined surface 140, the projection of the first inclined surface 140 in the thickness direction falls within the projection range of the second bonding surface 220 in the thickness direction. It is understood that the height H' of the second engagement surface 220 is greater than the height H of the first inclined surface 140 in the thickness direction, and all of the first inclined surface 140 can be glued to the second engagement surface 220.

Referring to fig. 2 to 5, in some embodiments, the bezel 200 has a connection surface 240 connected between the first connection surface 210 and the second connection surface 220, and the connection surface 240 is spaced from the inner wall surface 131 of the mounting hole 130 to form an overflow slot 250 communicated with the dispensing slot 230. In order to ensure sufficient bonding between the first inclined surface 140 and the second bonding surface 220, a larger dispensing amount needs to be set for the dispensing slot 230, and by setting the glue overflow slot 250, excess glue in the dispensing slot 230 can enter the glue overflow slot 250, so that excessive glue in the dispensing slot 230 is avoided, the glue entering the glue overflow slot 250 can bond the bonding surface 240 and the inner wall surface 131 of the mounting hole 130, and the reliability of the connection between the decorative ring 200 and the rear cover 100 is further improved.

Further, a projection of the connection surface 240 to the second joint surface 220 in the thickness direction falls within a projection range of the inner wall surface 131 of the mounting hole 130 in the thickness direction. It can be understood that the joint of the connecting surface 240 and the second bonding surface 220 is set to be P, and compared with the scheme that the projection of P in the thickness direction falls into the projection range of the first inclined surface 140 in the thickness direction, the scheme that the projection of P in the thickness direction falls into the projection range of the inner wall surface 131 in the thickness direction will make the second bonding surface 220 closer to the appearance surface 120 in the thickness direction, so that the overlapping degree of the second bonding surface 220 and the first inclined surface 140 in the thickness direction can be increased, the depth of the glue dispensing groove 230 is increased, and the purpose of realizing sufficient glue bonding between the second bonding surface 220 and the first inclined surface 140 in the thickness direction is achieved. Further, the gap between P and the inner wall surface 131 of the mounting hole 130 constitutes the narrowest portion of the glue dispensing groove 230, through which the glue in the glue dispensing groove 230 can flow into the glue overflow groove 250. In addition, the distance between P and the inner wall surface 131 needs to be less than 0.5mm, so that the glue can stay in the glue dispensing groove 230, and the glue is prevented from flowing into the glue overflow groove 250 due to the overlarge distance.

Further, the joint face 240 is recessed toward the inside of the bezel 200 such that the joint of the joint face 240 and the second engagement face 220 is protruded. Thus, the space of the glue overflow groove 250 can be expanded to accommodate more glue. Specifically, the connection surface 240 includes a guiding surface 241 connected to the second engagement surface 220, and the guiding surface 241 is an inclined surface. Because the connecting surface 240 is sunken towards the inside of the decorative ring 200, the flow guide surface 241 is arranged to be an inclined surface, so that the pattern drawing of the decorative ring 200 can be facilitated, a better flow guide effect can be achieved on glue, and the glue can smoothly enter the glue overflow groove 250 from the glue dispensing groove 230. Further, an included angle beta between the flow guide surface 241 and the thickness direction is more than or equal to 45 degrees and less than or equal to 60 degrees. Specifically, β may be set to 45 °, 50 °, 55 °, 60 °, or the like. It is understood that if β is set to be less than or equal to 60 °, the pattern drawing of the bezel 200 is not facilitated. If β is smaller than 45 °, the joint between the second joint surface 220 and the guiding surface 241 corresponds to the first inclined surface 140, so that the overlapping degree of the second joint surface 220 and the first inclined surface 140 in the thickness direction is reduced, and the bonding reliability of the two is further reduced. It should be noted that, as shown in fig. 6 and 7, in other embodiments, the connection surface 240 may be substantially parallel to the thickness direction, and in this case, a gap exists between the connection surface 240 and the inner wall surface 131 of the mounting hole 130, and the gap communicates with the dispensing groove 230 to form the glue overflow groove 250. In the foregoing embodiment, the flow guiding surface 241 is also parallel to the thickness direction, and at this time, a glue with poor fluidity needs to be selected.

Referring again to fig. 2 to 5, in some embodiments, the connection surface 240 includes a support surface 242 spaced apart from the flow guiding surface 241, the first engagement surface 210 is connected to the support surface 242 through a concave arc surface 260, the concave arc surface 260 smoothly transitions with the first engagement surface 210, and the support surface 242 is higher than at least a portion of the first engagement surface 210. The support surface 242 may be understood as the bottom surface of the flash tank 250. There is a gap between the first bonding surface 210 and the appearance surface 120, and the gap is communicated with the flash groove 250. The gap between the first engaging surface 210 and the outer surface 120 is used for accommodating glue when the two are glued, and when the two are glued, if the glue is excessive, the excessive glue can enter the glue overflow groove 250, so as to avoid the appearance being affected by the overflow to the periphery of the decorative ring 200. Because the first engaging surface 210 is connected to the supporting surface 242 through the concave arc surface 260, the concave arc surface 260 can provide a better guiding function for the excess glue between the first engaging surface 210 and the appearance surface 120. Since the supporting surface 242 is higher than the concave arc surface 260 and a portion of the first engaging surface 210, the supporting surface 242 and the first engaging surface 210 form a structure similar to a step, so that the concave arc surface 260 can also block the glue between the first engaging surface 210 and the appearance surface 120, and it is ensured that there is more glue between the first engaging surface 210 and the appearance surface 120 to achieve stable bonding.

Further, the shortest distance L between the flow guide surface 241 and the supporting surface 242 satisfies 0.2mm ≤ L ≤ 0.3 mm. Specifically, L may be set to a value of 0.2mm, 0.25mm, 0.3mm, or the like. It can be understood that, since the guiding surface 241 is an inclined surface, a perpendicular line is drawn from a position on the guiding surface 241 closest to the supporting surface 242, so that a shortest distance L between the guiding surface 241 and the supporting surface 242 is obtained, and at this time, distances from any other positions on the guiding surface 241 to the supporting surface 242 are greater than the shortest distance L. By making L less than or equal to 0.2mm and less than or equal to 0.3mm, the L can cooperate with other factors such as the inclination angle of the flow guide surface 241 to form a constraint on the approximate space of the glue overflow groove 250. Specifically, the attachment surface 240 includes a guide surface 243 connected between the flow guide surface 241 and the support surface 242, and the guide surface 243 is parallel to the thickness direction and perpendicular to the support surface 242. As described above, the shortest distance L between the guide surface 241 and the support surface 242 is the height of the guide surface 243 in the thickness direction.

Referring to fig. 2, 3, 6 and 8, in some embodiments, the outer surface 120 includes a first surface 121 having a flat surface and a second surface 122 having a curved surface, and the second surface 122 is connected to an edge of the first surface 121. It should be noted that the curved design of the second surface 122 can make the appearance surface 120 exhibit better 3D effect. In addition, in the embodiment that the mobile terminal includes the middle frame, the second surface 122 is connected to the periphery of the first surface 121, that is, the second surface 122 surrounds the first surface 121 in an annular shape, and the second surface 122 is a convex arc surface extending to the frame and smoothly connected to the first surface 121.

Specifically, for the decoration ring 200, the first joint surface 210 includes a first area 211 and a second area 212, the first area 211 is a plane adhered to the first surface 121 and parallel to the first surface 121, and the second area 212 is a curved surface adhered to the second surface 122 and parallel to the second surface 122, so as to ensure that a back glue layer with a uniform thickness can be formed between the first area 211 and the first surface 121, and between the second area 212 and the second surface 122. Further, the first engagement surface 210 extends in a closed loop shape, so that the bezel 200 forms a stable connection with the rear cover 100 around the mounting hole 130.

In other embodiments, for the decoration ring 200, the first engaging surface 210 may be a plane glued to the first surface 121, and the first engaging surface 210 is parallel to the first surface 121, so as to ensure that a back glue layer with a uniform thickness can be formed therebetween. In other embodiments, for the decoration ring 200, the first engaging surface 210 may also be a curved surface glued to the second surface 122, and the first engaging surface 210 is parallel to the second surface 122, so as to ensure that a back glue layer with a uniform thickness can be formed therebetween. Further, the first engagement surface 210 may be all or part of the circumference of the bezel 200. In this way, the first engagement surface 210 can be provided for the mounting of the bezel 200 to the rear cover 100.

As shown in fig. 3 and fig. 5, further, the bezel 200 includes an attaching surface 280, and the attaching surface 280 is a curved surface attached to the second surface 122. The first engaging surface 210 is connected to the engaging surface 280 through a convex arc surface 270, and the convex arc surface 270 and the engaging surface 280 are smoothly transited. It will be appreciated that in order to enhance the appearance of the bezel 200, it is generally selected to move the bezel 200 toward the edge of the rear cover 100, and a portion of the bezel 200 needs to be mounted on the second surface 122. By arranging the abutting surface 280, after the first engaging surface 210 is glued to the appearance surface 120, the abutting surface 280 is just abutted to the second surface 122, so that a large gap between the decorative ring 200 and the second surface 122 is prevented from affecting the appearance. In addition, the adhesive surface 280 can also prevent the glue between the first bonding surface 210 and the exterior surface 120 from overflowing when the first bonding surface and the exterior surface are bonded, thereby improving the appearance quality. In addition, by providing a smooth transition between the convex arc surface 270 and the abutting surface 280, the convex arc surface 270 can prevent the glue from overflowing, and at the same time, part of the glue can be guided into a gradually decreasing gap between the convex arc surface 270 and the appearance surface 120, so that the glue in the gap provides a pulling force for the abutting surface 280 to abut against the second surface 122.

In some embodiments, the first inclined surface 140 and the second engagement surface 220 are both annular in shape extending along the circumference of the mounting hole 130. For the part of the bezel 200 extending into the mounting hole 130, along the circumferential direction of the mounting hole 130, the whole part of the bezel needs to be glued to the first inclined plane 140 through the second joint plane 220 to enhance the joint strength between the bezel 200 and the rear cover 100, thereby improving the joint reliability between the bezel and the rear cover. In other embodiments, the part of the decorative ring 200 extending into the mounting hole 130 may be partially adhered to the first inclined surface 140 by the second joint surface 220 along the circumference of the mounting hole 130 to realize a second guarantee of the connection between the decorative ring 200 and the rear cover 100.

It should be noted that the above-mentioned connection method of the bezel 200 and the rear cover 100 can also be applied to the adhesion of other partially detached pieces and the bezel 200.

In the present embodiment, the decoration ring 200 is a plastic member. It is understood that the material of the back cover 100 is plastic or glass. Set up to the plastic material with decorating circle 200, will be favorable to decorating circle 200 and back lid 100 to realize stable being connected.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A shell assembly, comprising:

2. The shell assembly of claim 1, wherein the second engagement surface is a sloped surface having an opposite slope direction from the first sloped surface.

3. The shell assembly of claim 2, wherein the angle α between the second engagement surface and the thickness direction satisfies 45 ° ≦ α < 90 °.

4. The shell assembly of claim 1, wherein the first inclined surface forms an angle of 45 ° with the thickness direction, and a height H of the first inclined surface projected in the thickness direction satisfies 0.15mm ≦ H ≦ 0.2 mm.

5. The housing assembly of claim 1, wherein the bezel has a connection surface connected between the first connection surface and the second connection surface, the connection surface being spaced apart from an inner wall surface of the mounting hole to define an adhesive overflow slot in communication with the dispensing slot.

6. The housing assembly according to claim 5, wherein a projection of the connection surface to the second engagement surface in the thickness direction falls within a projection range of an inner wall surface of the mounting hole in the thickness direction.

7. The housing assembly of claim 6, wherein the connection face is recessed inwardly of the bezel such that a junction of the connection face and the second engagement face is raised.

8. The shell assembly of claim 6, wherein the attachment surface includes a flow-directing surface attached to the second engagement surface, the flow-directing surface being a beveled surface; the included angle beta between the flow guide surface and the thickness direction is more than or equal to 45 degrees and less than or equal to 60 degrees.

9. The shell assembly of claim 8, wherein the attachment surface includes a support surface spaced from the flow-directing surface; the first joint surface is connected with the supporting surface through a concave arc surface, and the concave arc surface is smoothly connected with the first joint surface; the supporting surface is higher than the concave cambered surface and part of the first joint surface.

10. The shell assembly of claim 9, wherein a shortest distance L between the flow guide surface and the support surface satisfies 0.2mm ≦ L ≦ 0.3 mm.

11. The shell assembly of claim 9, wherein the attachment face includes a guide face connected between the flow-directing face and the support face, the guide face being parallel to the thickness direction and perpendicular to the support face.

12. The housing assembly of claim 1, wherein the appearance surface comprises a first surface that is planar and a second surface that is curved, the second surface being attached to an edge of the first surface;

the first joint surface is a plane which is glued to the first surface and is parallel to the first surface; or,

the first joint surface is a curved surface which is glued to the second surface and is parallel to the second surface; or,

the first joint surface comprises a first area and a second area, the first area is a plane which is glued to the first surface and is parallel to the first surface, and the second area is a curved surface which is glued to the second surface and is parallel to the second surface.

13. The shell assembly of claim 12, wherein the decorative ring includes an abutting face, the abutting face being a curved face that abuts the second surface; the first joint face is connected with the binding face through a convex cambered surface, and the convex cambered surface is smoothly connected with the binding face.

14. The shell assembly of any one of claims 1-13, wherein the first angled surface and the second engagement surface each extend annularly along a circumference of the mounting hole.

15. A mobile terminal, characterized in that it comprises a housing assembly according to any one of claims 1 to 14.