CN209748932U

CN209748932U - Shell and electronic device

Info

Publication number: CN209748932U
Application number: CN201821970809.7U
Authority: CN
Inventors: 陈坤华; 邓伟; 伍克龙
Original assignee: Shenzhen Futaihong Precision Industry Co Ltd
Current assignee: Fulian Yuzhan Technology Shenzhen Co Ltd
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2019-12-06
Anticipated expiration: 2028-11-27
Also published as: TWM585027U

Abstract

The utility model relates to a shell, the casing includes metalwork and plastic part, plastic part integrated into one piece in on the metalwork, the metalwork includes an at least recess for accept the plastic part, the open position of recess is formed with and reduces open-ended dogtooth, the dogtooth is used for pinning the plastic part.

Description

Shell and electronic device

Technical Field

The utility model relates to a casing, in particular to reach by thin wall metalwork and plastic part integrated into one piece's casing and including the electron device of casing.

Background

Metal housings made of metals such as aluminum/aluminum alloy, magnesium/magnesium alloy, stainless steel, and the like have the advantages of light weight, elegant appearance, high mechanical strength, and the like, and are commonly used for manufacturing housings of electronic products such as tablet computers, mobile phones, and the like. The inner surface of the electronic product casing is generally provided as a complicated structure. The industry typically uses a numerically controlled (CNC) machine to mill the inner surface of the formed metal housing to form the structure, which takes a long time and is inefficient in machining the housing. The plastic and the metal are embedded to form the shell, the plastic is used for forming the complex structure of the shell, the processing efficiency of the shell can be improved, however, the material difference of the plastic and the metal is large, the binding force of the plastic and the metal is not strong, the plastic and the metal are easily stripped, and the performance of the shell is affected.

At present, the iron-plastic binding force is mainly improved through a strip-shaped glue drawing groove and a nano hole, the structure needs thicker material, the material needs to be removed by adopting a forging process, and the processing time is long. The applicability of the mobile phone with a comprehensive screen and a narrow frame, which is popular in the market at present, is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, a housing with a strong bonding force and formed by integrally molding a metal part and a plastic part and an electronic device including the housing are provided.

A shell comprises a metal piece and a plastic piece, wherein the plastic piece is integrally formed on the metal piece, the metal piece comprises at least one groove and is used for accommodating the plastic piece, a convex tooth for reducing the opening of the groove is formed at the opening of the groove, and the convex tooth is used for locking the plastic piece.

Preferably, the metal member includes a plurality of metal strips and a middle frame, the middle frame is a hollow rectangular sheet structure, the plurality of metal strips are disposed on two opposite sides of the middle frame, an end of each metal strip is disposed opposite to an end of the middle frame at an interval, a gap is formed between the end of each metal strip and the corresponding end of the middle frame, and the plastic member further fills the gap formed between the end of each metal strip and the corresponding end of the middle frame.

Preferably, the groove is disposed on the inner surface of the metal strip, the groove includes a lower end surface, an upper end surface opposite to the lower end surface, and a side surface connecting the upper end surface and the lower end surface, and the groove is recessed from both ends to the middle in the length direction so that the side surface is approximately in an inward concave arc shape.

Preferably, the depth of the side surface from the inner surface gradually deepens from the edge to the middle.

Preferably, the middle edge of the lower end surface and the middle edge of the upper end surface extend towards each other to form the convex teeth.

Preferably, the cross section of the groove along the thickness direction at the convex tooth is in a C-shaped structure.

Preferably, the thickness of the metal piece is less than or equal to 1.5 mm.

Preferably, the metal piece is made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy, copper or copper alloy.

Preferably, the plastic part is made of thermoplastic plastic or thermosetting plastic, the thermoplastic plastic is polybutylene terephthalate, polyphenylene sulfide, polyethylene terephthalate, polyether ether ketone, polycarbonate or polyvinyl chloride, and the thermosetting plastic is polyurethane resin, epoxy resin or polyurea resin.

An electronic device comprises a display screen and a shell, wherein the display screen is arranged in the shell.

Compared with the prior art, the utility model provides a casing reaches including the electron device of casing, the metalwork includes an at least recess, is used for acceping the plastic part, the opening of recess is formed with and reduces open-ended dogtooth, the dogtooth is used for pinning the plastic part has strengthened the cohesion between metalwork and plastic part, and can realize the slimming of casing.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention in which a housing is applied to an electronic device.

Fig. 2 is a schematic view of the housing of fig. 1.

Fig. 3 is an exploded view of the housing of fig. 2.

Fig. 4 is a schematic view of the metal parts of the housing of fig. 3.

Fig. 5 is a partial schematic view of a plastic part of the housing of fig. 3.

Fig. 6 is a schematic processing diagram of a method of manufacturing the housing.

Fig. 7 is a sectional view of the housing taken along the direction VII-VII.

Description of the main elements

Shell body	100
		Electronic device	200
Display screen	201
		Metal part	10
Gap	101
		groove	11
Special cutter	12
		Metal strip	13
Middle frame	14
		Shaft	121
Machining end	122
		Plastic part	20
Raised part	21
		Lower end face	111
Upper end face	113
		Side surface	115
Convex tooth	117
		Inner surface	15

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "up," "down," and the like are used herein for illustrative purposes only.

Furthermore, the terms first, second and the like in the description and in the claims, and the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced in sequences other than those illustrated.

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

As shown in fig. 1 and 2, an embodiment of the invention provides a housing 100 applied to an electronic device 200. The electronic device 200 may be a mobile phone, a tablet computer, a digital camera, or the like. The electronic device 200 includes, but is not limited to, the housing 100 and a display screen 201, and the display screen 201 is installed in the housing 100. Obviously, the electronic device 200 may further include, but is not limited to, other mechanical structures, electronic components, modules, and software for implementing the preset functions thereof.

The display screen 201 is used for providing an interactive interface to enable the user to interact with the electronic device 200.

Referring to fig. 3, the housing 100 includes a metal member 10 and a plastic member 20. In this embodiment, the housing 100 is a frame of the electronic device 200. It is understood that the housing 100 may further include, but is not limited to, other mechanical structures, electronic components, modules, and circuits for performing the predetermined functions thereof. In this embodiment, the metal member 10 may be made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy, copper, or copper alloy. It is understood that in other embodiments, the metal piece 10 may be made of other metals or alloys. The metal member 10 and the plastic member 20 are integrally formed and together form the housing 100. The metal member 10 may be manufactured by using a common technique such as casting, stamping, or Computer Numerical Control (CNC) technique, and preferably, by using a stamping or CNC technique.

It can be understood that the plastic part 20 is made of a material having better compatibility with the metal part 10. The plastic part 20 may be made of thermoplastic plastics or thermosetting plastics.

The thermoplastic plastic may be polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polyethylene terephthalate (PET), Polyetheretherketone (PEEK), Polycarbonate (PC), polyvinyl chloride (PVC), or the like.

The thermosetting plastic can be epoxy resin, polyurea resin or UV glue. The UV glue can be acrylic resin or polyurethane.

Referring to fig. 4, the metal member 10 is a substantially rectangular frame. Preferably, the metal member 10 includes a plurality of spaced apart metal strips 13 and a central frame 14. The middle frame 14 is substantially a hollow rectangular sheet structure. The plurality of metal strips 13 are disposed on opposite sides of the middle frame 14. The end of each metal strip 13 is spaced opposite to an end of the middle frame 14, so that a gap 101 is formed between the end of each metal strip 13 and the corresponding end of the middle frame 14. In the present embodiment, two spaced metal strips 13 are disposed on opposite sides of the middle frame 14. The metal piece 10 may further include a middle plate part (not shown), which may be integrally formed with the metal piece 10. It is understood that the middle plate part may also be provided separately from the metal piece 10.

The plastic part 20 is formed on the inner surface 15 of the metal part 10. The plastic member 20 may be at least filled in each of the gaps 101. In this way, the plastic part 20 is configured to be received in each gap 101, such that the two metal strips 13 and the middle frame 14 are connected to each other through the plastic part 20 to form the housing 100.

Referring to fig. 5 and 6, the metal strip 13 includes an inner surface 15 and at least one groove 11 formed on the inner surface 15. The plastic part 20 is partially embedded in the at least one groove 11. The groove 11 is formed by CNC machining using a special tool and a special path. The front view of the recess 11 is generally a dog bone structure, which includes a lower end surface 111, an upper end surface 113 opposite to the lower end surface 111, and a side surface 115 connecting the upper end surface 113 and the lower end surface 111. The groove 11 is gradually recessed from both ends to the middle of the groove 11 in the length direction, and the depth of the side surface 115 from the inner surface 15 is gradually deepened from the edge to the middle. Convex teeth for reducing the opening of the groove 11 are formed at the opening position of the groove 11.

Specifically, in the present embodiment, the middle of the edge of the lower end surface 111 and the middle of the edge of the upper end surface 113 extend in the direction of approaching each other to form the convex teeth 117. Referring to fig. 7, the cross section of the groove 11 along the thickness direction at the convex tooth 117 is a "C" shape. The groove 11 can lock the plastic part 20 from four directions, i.e., up, down, left, and right, by using the protruding teeth 117 and the recessed side surfaces 115 formed at the opening positions thereof, which is beneficial to providing stronger bonding force between the plastic part 20 and the thin-walled metal part 10, and preventing the plastic part 20 from being separated from the metal part 10.

In other embodiments, a pair of convex teeth may be formed at the opening position of the groove 11 and at two opposite sides of the side surface 115 to approach each other, so as to reinforce and lock the plastic member 20.

In this embodiment, the recess 11 is provided on the inner surface 15 of the metal strip 13 of the metal piece 10. In other embodiments, the groove 11 may also be provided on the middle frame 14 of the metal piece 10. A plurality of the grooves 11 are arranged at intervals. The groove 11 is used for accommodating the plastic part 20, so that the thickness (the thickness between the inner surface and the outer surface) of the metal part 10 is less than or equal to 1.5mm, the forging difficulty of the metal part 10 and the CNC processing time can be reduced, and the thinning of the shell of the electronic device 200 can be realized.

In this embodiment, the plastic part 20 is partially disposed in the metal part 10 and is used for connecting the metal strip 13 and the middle frame 14 of the metal part 10, so as to form the housing 100, and the other parts of the plastic part 20 are formed in the groove 11 of the metal part 10, so as to form a protrusion 21 matched with the groove 11 in the groove 11, where the protrusion 21 is an arc protrusion structure, so as to increase the bonding force between the metal part 10 and the plastic part 20.

The method for manufacturing the housing 100 of one embodiment includes the following steps:

Step one, a metal piece 10 is provided, and the metal piece 10 has a shape of a local area of an electronic device 200. It is understood that the metal member 10 can be manufactured by a common method such as casting, stamping or numerical Control (CNC), and is preferably manufactured by stamping or numerical Control.

The metal member 10 is a substantially rectangular frame. Preferably, the metal piece 10 comprises a plurality of metal strips 13 and a middle frame 14. The middle frame 14 is substantially a hollow rectangular sheet structure. The plurality of metal strips 13 are disposed at opposite sides of the middle frame 14, and the plurality of metal strips 13 at each side of the middle frame 14 are formed in a U-shape. In the present embodiment, each side of the middle frame 14 includes 2 spaced metal strips 13, and an end of each metal strip 13 is spaced opposite to an end of the middle frame 14, so that a gap 101 is formed between the end of each metal strip 13 and the corresponding end of the middle frame 14.

And step two, forming at least one groove 11 on the metal piece 10 in a CNC machining mode. In the present embodiment, a groove 11 is formed in at least one metal strip 13 of the plurality of metal strips 13 on each side of the middle frame 14.

In the present embodiment, as shown in fig. 6, the metal member 10 is machined by CNC machining. In an embodiment, the metal piece 10 may be formed by one-time milling with a special tool 12, so that the groove 11 is formed on the metal piece. The special tool 12 includes a shaft 121 and a machining end 122 provided at one end of the shaft 121. The machining end 122 is a cylindrical structure, one end of the machining end 122 close to the shaft 121 is recessed inwards to form a substantially annular groove, and one end of the machining end 122 far from the shaft 121 is also recessed inwards to form a substantially annular groove. Firstly, the inner surface 15 of the metal strip 13 is milled by the processing end 122 of the special tool 12 to form the upper end surface 113 and the lower end surface 111 of the groove 11, and then the processing end 122 is moved up and down to mill the inner surface 15 to form the side surface 115 of the groove 11, the groove 11 is recessed from two ends to the middle in the length direction, and the middle of the edge of the lower end surface 111 and the middle of the edge of the upper end surface 113 are respectively convexly provided with convex teeth 117 extending towards the direction close to each other, namely the groove 11 is formed. The side surface 115 is a generally concave arc shape, and the depth of the side surface 115 from the inner surface 15 gradually increases from the edge to the middle. The cross section of the groove 11 along the thickness direction at the convex tooth 117 is a C-shaped structure, and the front view is approximately the shape of a tooth dog bone structure.

It is understood that in other embodiments, a milling tool may be used to mill the approximate contour of the grooves 11, and then the grooves 11 are machined by end milling, so that each of the grooves 11 is approximately in a dog bone structure, so as to increase the bonding force between the metal member 10 and the plastic member 20.

In the present embodiment, before the groove 11 is machined, the metal part 10 may be preheated by electric heating, plasma arc heating or laser heating, so that the cutting portion is heated and softened, and the hardness and shear strength of the metal part are properly reduced by plastic deformation, thereby improving the cutting performance, reducing the cutting force and power consumption, reducing the vibration generated during the cutting process, ensuring that the groove 11 meets the requirements of the set size, shape and position tolerance, and improving the cutting accuracy. Meanwhile, the cutting speed can be improved on the basis of ensuring the surface roughness, the cutter cannot lose efficacy due to the improvement of the cutting speed, and the service life of the cutter is prolonged.

In the embodiment, the plastic part 20 can be locked due to the special shape of the groove, so that the metal shell can be thinned, that is, the thickness of the metal part 10 can be controlled within 1.5mm, and thus, the forging difficulty of the metal part 10 and the CNC processing time can be reduced, and the shell of the electronic device 200 can be thinned.

And step three, forming the plastic part 20 on the metal part 10 in an injection molding mode. Specifically, the metal piece 10 forming the groove 11 is placed in an injection molding mold cavity, molten plastic is injected, a plastic piece 20 connected with the metal piece 10 is formed, and the plastic piece 20 and the metal piece 10 jointly form the casing 100.

In this embodiment, the metal piece 10 forming the groove 11 is placed in an injection molding mold cavity, molten plastic is injected, the flowing direction of the rubber material is consistent during injection molding, the air trapping risk can be reduced, a plastic piece 20 connected with the metal piece 10 is formed, and the bonding strength between the plastic piece 20 and the metal piece 10 is enhanced.

It is understood that the plastic member 20 may further cover other areas of the metal member 10 to increase the bonding force between the metal member 10 and the plastic member 20.

Specifically, the injection molding process may be: the metal material 10 is inserted into a molding die (not shown), and the injection temperature and the injection pressure are adjusted. And injecting molten plastic into the forming mold, wherein the plastic is filled in the groove 11 of the metal piece 10 to form the plastic piece 20. After the plastic is cooled, the plastic part 20 is combined with the metal part 10.

It is understood that the plastic member 20 may be formed by general injection molding, and the plastic member 20 may also be formed by performing nmt (nano Mold technology) processing on the metal member 10.

To sum up, the utility model provides a casing reaches including the electronic device of casing, metalwork 10 includes at least one and roughly is the recess 11 that the dog bites "dog bone" type structure for accept plastic part 20, specifically, the protruding dogtooth 117 that is close to the extension each other that is equipped with of opening of recess 11, dogtooth 117 reaches the side of indent is used for pinning four directions from top to bottom about four directions plastic part 20 has strengthened the cohesion between metalwork 10 and plastic part 20, from this, metalwork 10 material thickness is steerable within 1.5mm, has realized the thin-walled of metalwork, and then has realized electronic device's frivolousization.

To those skilled in the art, other changes or adjustments can be made according to the practical requirements of the present invention in combination with the practical requirements of the present invention, and these changes and adjustments should fall within the scope of the present invention.

Claims

1. A shell comprises a metal piece and a plastic piece and is characterized in that the plastic piece is integrally formed on the metal piece, the metal piece comprises at least one groove and is used for accommodating the plastic piece, convex teeth for reducing the opening of the groove are formed at the opening position of the groove, and the convex teeth are used for locking the plastic piece.

2. The housing of claim 1, wherein the metal member includes a plurality of metal strips and a middle frame, the middle frame is a hollow rectangular sheet structure, the plurality of metal strips are disposed on two opposite sides of the middle frame, an end of each metal strip is spaced from an end of the middle frame, a gap is formed between the end of each metal strip and the corresponding end of the middle frame, and the plastic member further fills the gap formed between the end of each metal strip and the corresponding end of the middle frame.

3. The housing according to claim 2, wherein the groove is provided on an inner surface of the metal strip, the groove includes a lower end surface, an upper end surface opposite to the lower end surface, and a side surface connecting the upper end surface and the lower end surface, and the groove is recessed from both ends toward the middle in a length direction such that the side surface is substantially concavely curved.

4. A housing as claimed in claim 3, wherein the depth of the side faces from the inner surface of the metal strip increases from edge to centre.

5. The housing of claim 3 wherein said teeth are formed by extending a central portion of said lower end surface and a central portion of said upper end surface toward each other.

6. The housing of claim 5, wherein the groove has a "C" shaped cross-section in the thickness direction at the lobe.

7. The housing of claim 1, wherein the metal piece has a thickness of less than or equal to 1.5 mm.

8. The housing of claim 1, wherein the metal member is made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy, copper or copper alloy.

9. The housing of claim 1, wherein the plastic member is a thermoplastic plastic or a thermosetting plastic, the thermoplastic plastic is polybutylene terephthalate, polyphenylene sulfide, polyethylene terephthalate, polyether ether ketone, polycarbonate or polyvinyl chloride, and the thermosetting plastic is polyurethane resin, epoxy resin or polyurea resin.

10. An electronic device, characterized in that the electronic device comprises a display screen and a housing according to any one of claims 1-9, the display screen being mounted in the housing.