CN212969729U

CN212969729U - Shell assembly and mobile terminal

Info

Publication number: CN212969729U
Application number: CN202022405264.9U
Authority: CN
Inventors: 徐跃东
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-04-13
Anticipated expiration: 2030-10-26

Abstract

The application discloses casing subassembly and mobile terminal, casing subassembly includes: the middle frame comprises a frame, and the frame is provided with a mounting surface; the cover plate comprises a buckling part, and the buckling part is connected to the mounting surface through an adhesive layer; a recess is formed in the position, corresponding to the end part of the cover plate, of the side frame, so that an avoiding gap is formed between the cover plate and the middle frame; the shell assembly further comprises an elastic filling body filling the avoiding gap. This application is through setting up the elasticity obturator in dodging the clearance between apron and center for this elasticity obturator can play the cushioning effect when casing subassembly falls, can bear the extrusion force, absorbs and compensate dynamic load, avoids the apron to break because of the atress that direct and center rigid coupling lead to, thereby reduces the cracked risk of apron, realizes the protection that falls to the apron.

Description

Shell assembly and mobile terminal

Technical Field

The present application relates generally to the field of mobile terminal technology, and more particularly, to a housing assembly and a mobile terminal.

Background

With the diversification development of mobile terminals, glass is more and more widely applied to the mobile terminals, and is particularly used as a battery cover. The physical properties of glass dictate that it has a high risk of breakage during use. The wrapping joint of a glass battery cover and a middle frame of the existing mobile terminal is in a gap state, and the risk of battery cover fragmentation in the falling process is reduced by adopting a gap avoiding mode, however, the mode only can play a role under the condition of relatively small impact energy, when the impact energy is large in the falling process and the gum is pressed to an extreme state, the battery cover and the middle frame are rigidly combined, and the risk of battery cover fragmentation is high at the moment; the impact resistance of the battery cover may be improved by increasing the gap, but the size of the gap affects the appearance and sealability of the mobile terminal.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a housing assembly and a mobile terminal, which are expected to effectively protect a battery cover from falling and reduce the risk of the battery cover breaking.

As a first aspect of the present application, a housing assembly is provided.

Preferably, the housing assembly comprises:

the middle frame comprises a frame, and the frame is provided with a mounting surface;

the cover plate comprises a buckling part, and the buckling part is connected to the mounting surface through an adhesive layer;

a recess is formed in the position, corresponding to the end part of the cover plate, of the side frame, so that an avoiding gap is formed between the cover plate and the middle frame; and

and an elastic filling body for filling the avoiding gap.

Preferably, the elastic filler is formed by filling an elastic filler in the relief gap and curing the elastic filler.

Preferably, the elastic filler is rubber and/or silicone.

Preferably, the middle frame further comprises a middle plate, and the side frame is arranged around the outer edge of the middle plate;

one side of medium plate is equipped with the battery storage tank, the apron lid is located the medium plate is equipped with the one side of battery storage tank.

Preferably, the recess is provided around a circumference of the middle plate.

Preferably, the cover plate further comprises a transparent body, and the buckling part is arranged around the outer edge of the transparent body; the vertical projection of the adhesive layer on the buckling part covers the buckling part, and the end part of the adhesive layer close to the recess is positioned in the recess.

Preferably, the decorative film layer is used for providing color or pattern rendering on the transparent body, and the decorative film layer is formed between the buckling part and the bonding layer; the vertical projection of the decorative film layer on the buckling part completely covers the buckling part and the transparent body, and the end part of the decorative film layer is positioned in the recess.

Preferably, the end of the cover plate, the end of the adhesive layer located in the recess, the end of the decorative film layer and the recess together enclose a receiving area forming the elastic filling body.

Preferably, the cover plate is made of glass.

As a second aspect of the present application, the present application provides a mobile terminal.

Preferably, the mobile terminal comprises the housing assembly of the first aspect.

The beneficial effect of this application:

this application is through setting up the elasticity obturator in dodging the clearance between apron and center for this elasticity obturator can play the cushioning effect when casing subassembly falls, can bear the extrusion force, absorbs and compensate dynamic load, avoids the apron to break because of the atress that direct and center rigid coupling lead to, thereby reduces the cracked risk of apron, realizes the protection that falls to the apron.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is an exploded view of a housing assembly according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view in the Y-axis direction of the assembled housing assembly shown in FIG. 1;

fig. 3 is an enlarged view of a portion a of the housing assembly shown in fig. 2.

Reference numerals: the decorative film comprises a middle frame 1, a frame 10, a middle plate 11, a mounting surface 101, a recess 102, an avoidance gap 103, a first step surface 104, a bottom surface 105, a cover plate 2, a buckling part 20, an end part 21, a transparent body 22, an elastic filling body 3, an adhesive layer 4, an end part 40, a decorative film layer 5 and an end part 50.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting.

It should be noted that in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

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

According to a first aspect of the present application, please refer to fig. 1 to 3, which illustrate a housing assembly of a preferred embodiment of the present application, comprising a middle frame 1, a cover plate 2 and an elastic filler 3, wherein the middle frame 1 comprises a frame 10, and the frame 10 has a mounting surface 101; the cover plate 2 comprises a buckling part 20, and the buckling part 20 is connected to the mounting surface 101 through an adhesive layer 4; a recess 102 is formed in a position of the side frame 10 corresponding to the end 21 of the cover plate 2, so that an avoiding gap 103 is formed between the cover plate 2 and the middle frame 1; the elastic filler 3 fills the escape gap 103.

In this embodiment, one side of the frame 10, which is provided with the mounting surface 101, is in a step structure, a protrusion is arranged on the mounting surface 101, one side of the protrusion, which faces the cover plate 2, is a first step surface 104, and the recess 102 is formed by arranging a groove on the frame 10, which is recessed from the first step surface 104 to a bottom surface 105 opposite to the first step surface 104, so that an avoidance gap 103 is reserved between the cover plate 2 (specifically, the end portion 21 of the buckling portion 20) and the middle frame 1 (specifically, the frame 10), and the avoidance gap 103 may be a value greater than 1mm, and has the following functions: when the cover plate 2 (especially the fastening portion 20) is deformed by an external force, it can be used to accommodate the deformation of the fastening portion 20, so as to ensure that the fastening portion 20 and the frame 10 are in a non-contact state, thereby avoiding rigid contact between the fastening portion 20 and the middle frame 1. Here, the mounting surface 101 is a surface of the bezel 10 to be connected to the inner surface of the engaging portion 20, and the end portion 21 of the cover 2 is a portion of the cover 2 near the edge of the bezel 10.

The adhesive layer 4 is used for firmly connecting the cover plate 2 to the middle frame 1, and for enabling the connection between the cover plate 2 and the middle frame 1 to be a hard-soft-hard connection for exerting a certain buffering effect.

The elastic filling body 3 is used for filling the avoiding gap 103, so that the hard-soft-hard connection between the cover plate 2 and the middle frame 1 is further enhanced, the elastic filling body 3 can play a stronger buffer role when the shell assembly falls, can bear extrusion force, avoids rigid contact between the cover plate 2 and the middle frame 1 when the bonding layer 4 is pressed to an extreme state due to larger impact energy, and plays a role of secondary elastic support; and this elasticity obturator 3 can absorb and compensate dynamic load, the effect of the even transmission atress of performance to can effectively avoid apron 2 and the well frame 1 collision each other and the apron 2 atress that leads to is broken, effectively reduce the cracked risk of apron 2.

In this embodiment, the adhesive layer 4 may be a glue layer or a back glue layer; the glue can be at least one of foam cotton glue, PET substrate glue and glass glue.

Further, in some preferred embodiments of the present application, the elastic filler 3 is formed by filling an elastic filler in the relief gap 103 and curing the elastic filler.

After the elastic filler is filled in the avoiding gap 103, the elastic filler can be cured by static curing or ultraviolet curing to form an elastic elastomer 3, and the elastic filler 3 formed after curing is adhered between the cover plate 2 and the middle frame 1 to play an elastic supporting role.

Further, in some preferred embodiments of the present application, the elastic filler is rubber and/or silicone.

The rubber and the silica gel have high elasticity and obvious strain rate effect, can elastically deform under the action of dynamic load, and can absorb energy through elastic deformation to play the roles of elastically supporting and compensating the dynamic load. It will be appreciated that other materials having high elasticity, ductility and toughness may be used.

Further, in some preferred embodiments of the present application, the middle frame 1 further includes a middle plate 11, and the side frame 10 surrounds an outer edge of the middle plate 11;

one side of the middle plate 11 is provided with a battery accommodating groove, and the cover plate 2 covers the side of the middle plate 11 provided with the battery accommodating groove.

In the present embodiment, the frame 10 is disposed along the periphery of the middle plate 11, and the frame 11 may include a top edge and a bottom edge disposed oppositely, and a left edge and a right edge disposed oppositely between the top edge and the bottom edge, so as to enclose the middle plate 11 therein. The middle plate 11 may be a metal middle plate, and the frame 10 may be a metal frame, a glass frame, a plastic frame, or a ceramic frame. The connection between the frame 10 and the middle plate 11 includes, but is not limited to, welding, clamping, and integral injection molding.

In the present embodiment, the middle plate 11 is used as a mounting surface for mounting electronic components such as a battery for fixing the electronic components such as the battery in the case assembly, wherein when the battery is disposed on the middle plate 11, for example, a battery accommodating groove may be disposed on a surface of the cover plate 2 facing the middle plate 11, the battery is mounted in the battery accommodating groove, and the battery can be packaged in the case assembly by covering the cover plate 2 on a side of the middle plate 11 where the battery accommodating groove is disposed, thereby performing a protection and sealing function.

Further, in some preferred embodiments of the present application, the recess 102 is disposed around the middle plate 11.

In this embodiment, the recess 102 is disposed around the outer edge of the middle plate 11, so that the top edge, the bottom edge, the left edge and the right edge of the frame 10 all have the avoidance gap 103, and the elastic filling body 3 filled in the avoidance gap 103 can play a role of protection and buffering in all directions.

Further, in some preferred embodiments of the present application, the cover plate 2 further includes a transparent body 22, and the fastening portion 20 is enclosed at an outer edge of the transparent body 22; wherein, the perpendicular projection of the adhesive layer 4 on the fastening part 20 covers the fastening part 20, and the end 40 of the adhesive layer 4 close to the recess 102 is located in the recess 102.

In this embodiment, the fastening portion 20 extends along the edge of the transparent body 22, and the extending direction may be perpendicular to the transparent body 22 or form a certain angle, which is not limited herein. The cover plate 2 comprises an outer surface and an inner surface which are arranged oppositely, the inner surface is located on one side, facing the middle plate 11, of the cover plate 2 in the state that the cover plate 2 is assembled to the middle frame 1, the outer surface is located on one side, facing away from the middle plate 11, of the cover plate 2, the buckling part 20 is connected to the frame 10 (specifically, the mounting surface 101) through the bonding layer 4, and the transparent body 22 is covered on the battery accommodating groove. The end 40 of the adhesive layer 4 close to the recess 102 refers to a position where the adhesive layer 4 is close to the edge of the frame 10.

The adhesive layer 4 can completely cover the buckling part 20, specifically, the inner surface of the buckling part 20, which is used for being connected with the mounting surface 101, is completely covered with the adhesive layer 4, so that the connection area between the cover plate 2 and the middle frame 1 is increased, and the connection force between the cover plate 2 and the middle frame 1 is improved.

Further, in some preferred embodiments of the present application, the adhesive sheet further includes a decorative film layer 5 for providing a color or pattern to the transparent body 22, wherein the decorative film layer 5 is formed between the fastening portion 20 and the adhesive layer 4; wherein the perpendicular projection of the decorative film layer 5 on the fastening portion 20 completely covers the fastening portion 20 and the transparent body 22, and the end 50 of the decorative film layer 5 is located in the recess 102. The end part 50 of the decorative film layer 5 refers to a part of the decorative film layer 5 close to the edge of the frame 10.

In this embodiment, the decorative film layer 5 is used for providing colors or patterns to render on the cover plate (specifically, the transparent body 22), so that the cover plate 2 can be set to different colors or have different patterns and textures according to the use requirements of users, the aesthetic property of the housing assembly is improved, and the housing assembly has better visual experience. Wherein, decorate membrane layer 5 accessible sticky mode and be fixed in the internal surface of apron 2, through cover completely buckling part 20 with transparent body 22 makes mobile terminal's whole aesthetic property can improve, and can shelter from mobile terminal's inner structure.

Wherein, the decorative film layer 5 can be customized with different patterns or colors to meet different user requirements.

Further, in some preferred embodiments of the present application, the end 21 of the cover plate 2, the end 40 of the adhesive layer 4 and the end 50 of the decorative film layer 5 located in the recess 102, and the recess 102 together enclose a receiving area for the elastic filling body 3.

In this embodiment, the edges or partial edges of the fastening portion 20, the adhesive layer 4, and the decorative film layer 5 close to the mounting surface 101 of the frame 10 are respectively located in the recess 102, the portion located in the recess 102 and the recess 102 together form a receiving area of the elastic filling body 3, and the elastic filling body 3 is limited therein, that is, the elastic filling body 3 is located at the connection position of the fastening portion 20, the adhesive layer 4, and the decorative film layer 5 and the recess 102, which facilitates the formation of the elastic filling body 3 and can ensure that the elastic filling body 3 can fully exert elastic supporting and buffering effects.

Further, in some preferred embodiments of the present application, the cover plate 2 is made of glass.

According to a second aspect of the present application, there is provided a mobile terminal of a preferred embodiment, the mobile terminal comprising the housing assembly described above.

The mobile terminal can further comprise a display screen assembly, the display screen assembly and the cover plate 2 are respectively fixed on two sides of the middle frame 1, for example, the display screen assembly can be connected to the bottom surface 105 of the frame 10 in a gluing mode and the like, and the display screen assembly, the middle frame 1 and the cover plate 2 form an external structure of the mobile terminal together. The mobile terminal may further include electronic components such as a battery and a circuit board, which are located inside the mobile terminal, wherein the circuit board and the battery may be disposed on the middle plate 11.

The mobile terminal may include, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm top computer, a personal digital assistant, a portable media player, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A housing assembly, comprising:

and an elastic filling body for filling the avoiding gap.

2. The housing assembly of claim 1, wherein the elastomeric filler is formed by filling an elastomeric filler in the relief gap and curing the elastomeric filler.

3. The housing assembly of claim 2, wherein the resilient filler is rubber and/or silicone.

4. The housing assembly of claim 1 wherein said middle frame further comprises a middle plate, said bezel being disposed around an outer edge of said middle plate;

5. The housing assembly of claim 4 wherein said recess is disposed about a circumference of said middle plate.

6. The housing assembly of claim 1, wherein the cover plate further comprises a transparent body, the snap fit portion being enclosed at an outer edge of the transparent body; the vertical projection of the adhesive layer on the buckling part covers the buckling part, and the end part of the adhesive layer close to the recess is positioned in the recess.

7. The housing assembly of claim 6, further comprising a decorative film layer for providing a color or pattern to the transparent body, the decorative film layer being formed between the fastening portion and the adhesive layer; the vertical projection of the decorative film layer on the buckling part completely covers the buckling part and the transparent body, and the end part of the decorative film layer is positioned in the recess.

8. The housing assembly of claim 7 wherein the ends of the cover sheet, the adhesive layer within the recess, the decorative film layer, and the recess collectively define a receiving area forming the elastomeric filling.

9. The housing assembly of any one of claims 1 to 8, wherein the cover plate is made of glass.

10. A mobile terminal characterized by comprising the housing assembly of any one of claims 1 to 9.