CN108886880A - A kind of metal shell and preparation method thereof, electronic equipment - Google Patents
A kind of metal shell and preparation method thereof, electronic equipment Download PDFInfo
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- CN108886880A CN108886880A CN201780018388.XA CN201780018388A CN108886880A CN 108886880 A CN108886880 A CN 108886880A CN 201780018388 A CN201780018388 A CN 201780018388A CN 108886880 A CN108886880 A CN 108886880A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Details Of Aerials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
A kind of metal shell and preparation method thereof, electronic equipment, are related to technical field of electronic equipment, the stability of aerial signal can be improved.The preparation method of the metal shell includes：Shielding layer (301) are formed in the inner surface of metal shell (10), shielding layer (301) exposed portion region (S10)；The metal layer being closely attached on metal shell (10) inner surface is formed in the region of metal shell (10) inner surface that shielding layer (301) is exposed using spraying process spraying abrasion-proof resistance to oxidation type metal material；Metal layer is a part (S11) of antenna structure；It removes shielding layer (S12).
Description
Technical field
This application involves technical field of electronic equipment more particularly to a kind of metal shell and preparation method thereof, electronic equipment.
Background technique
Increasingly developed and universal with wireless communication technique, electronic equipment is all made of built-in antenna to realize mostly at present
Wireless communication.The effect of antenna in the electronic device is that the emission of radio frequency signals for generating circuit board is gone out and will be received
Radiofrequency signal is transferred to circuit board, to realize the wireless two-way transmission of voice signal, vision signal, data-signal etc..
On this basis, in field of electronic device, especially mobile terminal device, metal shell is due to its excellent hand
Sense, texture and wear-resisting, impact property increasingly by the preference of consumer and are pursued.
And in the electronic equipment using metal shell, more and more electronic equipments are all using metal shell as the one of antenna
Part participates in signal radiation, but the stability of aerial signal is also current common problem.
Summary of the invention
The application provides a kind of metal shell and preparation method thereof, electronic equipment, and the stability of aerial signal can be improved.
In order to achieve the above objectives, embodiments herein adopts the following technical scheme that：
It further include being sprayed on metal shell inner surface in a first aspect, providing a kind of metal shell, including metal shell
Metal layer, metal layer are a part of antenna structure；Metal layer is closely attached on the inner surface of metal shell, and metal layer
Material is wear-resisting resistance to oxidation profile material.When the metal layer being closely attached on metal shell is located at the metal part of metal shell
When, one can be regarded as since both metal layer and its metal part of metal shell covered are electrically connected, and metal layer
Material is wear-resisting resistance to oxidation profile material, thus the characteristics such as wear-resistant, anti-oxidant in region locating for the metal layer can be improved, relatively not
Metal layer is set, there is oxidation, wear and the stability of aerial signal is caused to reduce in the metal part of corresponding region, this
The stability of aerial signal can be improved in application；When metal layer is located at the non-metal antenna exclusion region of metal shell, due to metal
The material of layer is wear-resisting resistance to oxidation profile material, thus the stability of aerial signal also can be improved.
With reference to first aspect, in the first possible implementation of the first aspect, metal shell includes feeding point area
Domain；Metal layer includes antenna bridge joint, and antenna bridge joint is located at feeding point region and covering feeding point region.Relatively not in feeding point area
Domain is arranged antenna and bridges, since in the long-term use, feeding point region and metal clips vibration rub on metal shell, meeting
Lead to feeding point zone oxidation on metal shell, wear and increase contact resistance, so as to cause antenna loop electrical connection properties
It reduces, the stability decline of aerial signal, thus, the application is bridged in feeding point region setting antenna, can improve this problem.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect
In, metal layer further includes antenna cabling.It is opposite to realize signal radiation using the setting cabling realization on PCB, or using FPC,
When metal layer includes antenna cabling, makes antenna cabling for signal radiation, sky occupied by corresponding PCB, FPC can be saved
Between, possibility is provided for production super-thin electronic equipment.
With reference to first aspect, in a third possible implementation of the first aspect, metal layer further includes antenna cabling.
It is opposite to be realized using cabling is arranged on PCB, or signal radiation is realized using FPC, when metal layer includes antenna cabling, make day
When line cabling is used for signal radiation, space occupied by corresponding PCB, FPC can be saved, is provided for production super-thin electronic equipment
It may.It is opposite to go out to be used for the structure of radiation signal in metal shell internal production using CNC technique, the setting side of antenna cabling
Formula can reduce the cost due to being made the structure of CNC technique.
With reference to first aspect and the above-mentioned any possible implementation of first aspect, at the 4th kind of first aspect
In possible implementation, the material of metal layer includes phosphor bronze.Since phosphor bronze has higher corrosion resistance, resistance to oxidation, resistance to
Abrasion, fatigue resistance, therefore, in the application can be used material of the phosphor bronze as metal layer.
Second aspect provides a kind of electronic equipment, any implementation including first aspect and first aspect
Metal shell.Metal shell therein has technical effect identical with first aspect, and details are not described herein.
The third aspect provides a kind of preparation method of metal shell, including：Masking is formed in the inner surface of metal shell
Layer, shielding layer exposed portion region；Using spraying process spraying abrasion-proof resistance to oxidation type metal material, in the gold that shielding layer is exposed
Belong to the region of shell inner surface, forms the metal layer being closely attached on metal shell inner surface；Metal layer is antenna structure
A part；Remove shielding layer.By being pre-formed shielding layer, so that shielding layer is exposed the region of metal layer to be formed, can use
During spraying process forms metal layer, other regions of metal shell will not be had an impact, and pass through control spraying
Technique, the metal shell that metal layer and shielded layer can be made to be exposed are in close contact, and avoid metal liftoff in use.
On this basis, when the metal layer being closely attached on metal shell is located at the metal part of metal shell, due to metal layer
And the electrical connection of both its metal parts of metal shell covered can regard one as, and the material of metal layer is wear-resisting oxytolerant
Change profile material, thus the characteristics such as wear-resistant, anti-oxidant in region locating for the metal layer can be improved, opposite to be not provided with metal layer, phase
The metal part in region is answered to there are problems that oxidation, wear and the stability of aerial signal is caused to reduce, day can be improved in the application
The stability of line signal；When metal layer is located at the non-metal antenna exclusion region of metal shell, since the material of metal layer is resistance to
Resistance to oxidation profile material is ground, thus the stability of aerial signal also can be improved.
In conjunction with the third aspect, in the first possible implementation of the third aspect, metal shell includes feeding point area
Domain；Metal layer includes antenna bridge joint, and antenna bridge joint is located at feeding point region and covering feeding point region.Relatively not in feeding point area
Domain forms antenna bridge joint, since in the long-term use, feeding point region and metal clips vibration rub on metal shell, meeting
Lead to feeding point zone oxidation on metal shell, wear and increase contact resistance, so as to cause antenna loop electrical connection properties
It reduces, the stability decline of aerial signal, thus, the application forms antenna bridge joint in feeding point region, can improve this problem.
In conjunction with the first possible implementation of the third aspect, in second of possible implementation of the third aspect
In, metal layer further includes antenna cabling.It is opposite to realize signal radiation using the setting cabling realization on PCB, or using FPC,
When metal layer includes antenna cabling 202, makes antenna cabling 202 for signal radiation, can save shared by corresponding PCB, FPC
According to space, for production super-thin electronic equipment provide possibility.
In conjunction with the third aspect, in the third possible implementation of the third aspect, metal layer includes antenna cabling.Phase
To realizing using cabling is arranged on PCB, or signal radiation is realized using FPC, when metal layer includes antenna cabling, makes antenna
When cabling is used for signal radiation, space occupied by corresponding PCB, FPC can be saved, is provided for production super-thin electronic equipment
It may.It is opposite to go out to be used for the structure of radiation signal in metal shell internal production using CNC technique, the setting side of antenna cabling
Formula can reduce the cost due to being made the structure of CNC technique.
In conjunction with the above-mentioned any possible implementation of the third aspect and the third aspect, at the 4th kind of the third aspect
In possible implementation, using spraying process spraying metal materials, in the area for the metal shell inner surface that shielding layer is exposed
Domain forms the metal layer being closely attached on metal shell inner surface, including：The fusing of phosphor bronze material is ejected into metal shell
On inner surface, in the region for the metal shell inner surface that shielding layer is exposed, formation is closely attached on metal shell inner surface
Metal layer.Since phosphor bronze has higher corrosion resistance, resistance to oxidation, wear-resistant, fatigue resistance, phosphor bronze can be used
Material as metal layer.
In conjunction with first to the 4th kind of any possible implementation of the third aspect and the third aspect, in the third aspect
The 5th kind of possible implementation in, metal shell inner surface formed shielding layer, including：It is covered using spraying process formation
The shielding film of lid metal shell inner surface；The shielding film of metal layer region to be formed is removed using laser carving technique, is formed and is hidden
Cover layer.Shielding layer can be formed by simple technique.
In conjunction with first to the 4th kind of any possible implementation of the third aspect and the third aspect, in the third aspect
The 6th kind of possible implementation in, metal shell inner surface formed shielding layer, including：It is covered using coating technique formation
The shielding film of lid metal shell inner surface；The shielding film of metal layer region to be formed is removed using laser carving technique, is formed and is hidden
Cover layer.Shielding layer can be formed by simple technique.
In conjunction with the 5th kind of possible implementation or the 6th kind of possible implementation of the third aspect, in the third aspect
In 7th kind of possible implementation, the interior table of metal shell passes through anodization；Based on this, removed using laser carving technique
The shielding film of metal layer region to be formed is formed after shielding layer, before forming metal layer using spraying process, the preparation side
Method further includes：Using the oxide layer for the metal shell inner surface that laser carving technique removal shielding layer is exposed.It can guarantee metal in this way
Layer is electrically connected with the metal part of its metal shell covered.
In conjunction with the 5th kind of possible implementation of the third aspect, in the 8th kind of possible implementation of the third aspect
In, shielding layer is removed, including：Shielding layer is removed using ultrasonic washing process.It is washed using ultrasound and removes shielding layer, it can will not be right
Metal shell impacts.
In conjunction with the 6th kind of possible implementation of the third aspect, in the 9th kind of possible implementation of the third aspect
In, shielding layer is removed, including：Remove shielding layer.Shielding layer is removed, metal shell will not can be impacted and simple process.
In conjunction with the third aspect, in the tenth kind of possible implementation of the third aspect, the material of shielding layer include paint,
At least one of ink.Due to paint, ink do not react with metal material, and it is at low cost, easily remove, therefore, hide
The material for covering film can be selected from least one of paint, ink.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram one of metal shell provided by the present application；
Fig. 2 is a kind of schematic diagram two of metal shell provided by the present application；
Fig. 3 is a kind of schematic diagram one of metal shell provided by the present application；
Fig. 4 is a kind of schematic diagram two of metal shell provided by the present application；
Fig. 5 is a kind of schematic diagram three of metal shell provided by the present application；
Fig. 6 is a kind of flow diagram one for preparing metal shell provided by the present application；
Fig. 7 is a kind of flow diagram two for preparing metal shell provided by the present application；
Fig. 8 is a kind of schematic diagram that shielding film is formed on metal shell provided by the present application；
Fig. 9 a is a kind of schematic diagram one that shielding layer is formed on metal shell provided by the present application；
Fig. 9 b is a kind of schematic diagram two that shielding layer is formed on metal shell provided by the present application；
Fig. 9 c is a kind of schematic diagram three that shielding layer is formed on metal shell provided by the present application；
Figure 10 a is the schematic diagram that antenna bridge joint is formed on the basis of Fig. 9 a；
Figure 10 b is the schematic diagram that antenna bridge joint and antenna cabling is formed on the basis of Fig. 9 b；
Figure 10 c is the schematic diagram that antenna cabling is formed on the basis of Fig. 9 c；
Figure 11 is a kind of flow diagram three for preparing metal shell provided by the present application；
Figure 12 is a kind of flow diagram four for preparing metal shell provided by the present application；
Figure 13 is a kind of flow diagram five for preparing metal shell provided by the present application.
Appended drawing reference：
10- metal shell；101- metal part；102- plastic strip；103- feeding point region；104- antenna cabling region；
201- antenna bridge joint；202- antenna cabling；30- shielding film；301- shielding layer.
Specific embodiment
The application provides a kind of metal shell, including metal shell, further includes the gold being sprayed on metal shell inner surface
Belong to layer, metal layer is a part of antenna structure；Metal layer is closely attached on the inner surface of metal shell, and the metal layer
Material is wear-resisting resistance to oxidation profile material.
Wherein, the thickness of metal layer can control within the scope of 0.05~0.2mm, such as can control in 0.1mm or so.
Herein, due to that need to consider aerial signal radiation factor when design metal shell, those skilled in the art should
Know, metal shell is entirely not metal, and need to be formed on the shell ontology of all-metal nonmetallic by related process
Antenna exclusion region, so that metal shell is also used as a part of antenna structure to participate in signal radiation.It is golden in the application based on this
Belong to shell to refer to：Processing is carried out to mental section and obtains the shell ontology with certain shapes and certain internal structure, and to shell
Ontology carries out the obtained metal shell including non-metal antenna exclusion region after series of process.
It is exemplary, as shown in Figure 1, metal shell 10 includes metal part 101, it is provided at the partition between metal part
Plastic strip 102.Metal part 101 and plastic strip 102 are only illustrated in Fig. 1, not to the specific structure inside metal shell 10
Illustrated.
It needs to illustrate to illustrate, first, it also may include back-cover and side plate that metal shell 10, which can only include back-cover,.
When metal shell 10 includes back-cover and side plate, back-cover and side plate can be integrated.
Wherein, metal layer may be provided on backboard, may also be arranged on side plate, or be arranged on backboard and side plate simultaneously.
For the inner surface of metal shell 10 is the appearance of opposing metallic shell 10, appearance is to work as metal shell
When applied to electronic equipment, the face that can be seen, touch.
Second, antenna structure, which plays, goes out the emission of radio frequency signals that circuit board in electronic equipment generates, by what is received
Radiofrequency signal is transferred to the effect of circuit board, and the application is not defined antenna structure, as long as can make to be sprayed at metal shell
The a part of the metal layer of inner surface as antenna structure, and antenna structure is made to play above-mentioned function.
Third can form spraying process when metal layer, by controlling to make metal layer be closely attached to metal shell
On inner surface.
The application provides a kind of metal shell, when the metal layer being closely attached on metal shell 10 is located at metal shell 10
Metal part when, by both metal parts of metal layer and its metal shell covered 10 electrical connection can regard one as
Body, and the material of metal layer is wear-resisting resistance to oxidation profile material, thus the wear-resistant, anti-oxidant of region locating for the metal layer can be improved
Etc. characteristics, it is opposite to be not provided with metal layer, the metal part of corresponding region exist oxidation, abrasion and lead to the stability of aerial signal
The stability of aerial signal can be improved in the problem of reduction, the application；When metal layer be located at the non-metal antenna of metal shell 10 every
When disconnected area, since the material of metal layer is wear-resisting resistance to oxidation profile material, thus the stability of aerial signal also can be improved.
Optionally, as shown in Fig. 2, metal shell 10 includes feeding point region 103；As shown in figure 3, metal layer includes antenna
Bridge joint 201, antenna bridge joint 201 are located at feeding point region 103 and covering feeding point region 103.
Wherein, by the metal part in feeding point region 103 on antenna bridge joint 201 and its metal shell 10 covered
Electrical connection, therefore, the two collectively forms feeding point.
A part due to metal shell 10 as antenna structure participates in signal radiation, it is therefore desirable to pass through feeding point and electricity
Connecting component on the plate of road realizes electrical connection, with formed communication, WLAN (Wireless Fidelity, abbreviation WiFi),
The antenna loops such as global positioning system (Global Positioning System, abbreviation GPS).Wherein, the connection on circuit board
Component can be metal clips (for example, gold-plated elastic slice), directly be contacted by elastic slice with feeding point, realize connecting component and feedback
The conducting of electricity point.
It should be noted that make metal shell 10 participate in signal radiation as a part of antenna structure, it need to be in metal
10 internal production of shell goes out to be used for the structure of radiation signal, wherein numerical control processing (Computer Numerical can be used
Control, abbreviation CNC) technique goes out to be used for the structure of radiation signal in 10 internal production of metal shell.
Antenna is not set in feeding point region 103 relatively and bridges 201, due in the long-term use, metal shell 10
Upper feeding point region 103 rubs with metal clips vibration, will lead to the oxidation of feeding point region 103 on metal shell 10, abrasion and
Increase contact resistance, so as to cause the reduction of antenna loop electrical connection properties, the stability of aerial signal declines, thus, this Shen
Antenna please is set in feeding point region 103 and bridges 201, this problem can be improved.
Further, on the basis of metal layer includes antenna bridge joint 201, metal layer can also include antenna cabling 202
(as shown in Figure 4).
Wherein, the non-metal antenna exclusion region of metal shell 10 is arranged in antenna cabling 202, i.e., on plastic strip 102.
Herein, antenna cabling 202 is directly electrically connected with the connecting component realization on circuit board, to form antenna loop.Electricity
Connecting component on the plate of road can be metal clips (for example, gold-plated elastic slice), directly be contacted by elastic slice with antenna cabling 202,
The conducting of connecting component and antenna cabling is realized, so as to make antenna cabling for signal radiation.
That is, carrying out signal radiation using metal shell 10 in some antennas circuit, some antennas is walked in circuit using antenna
Line 202 carries out signal radiation.
Cabling realization is arranged in opposite use on printed circuit board (Printed Circuit Board, abbreviation PCB), or
Person realizes signal radiation using flexible circuit board (Flexible Printed Circuit, abbreviation FPC), when metal layer includes day
Line cabling 202 can save space occupied by corresponding PCB, FPC when making antenna cabling 202 for signal radiation, for system
Make super-thin electronic equipment and provides possibility.
Optionally, as shown in figure 5, metal layer includes antenna cabling 202.
It is opposite to realize signal radiation using the setting cabling realization on PCB, or using FPC, when metal layer includes antenna
Cabling 202 can save space occupied by corresponding PCB, FPC when making antenna cabling 202 for signal radiation, for production
Super-thin electronic equipment provides possibility.It is opposite to go out to be used for the knot of radiation signal in 10 internal production of metal shell using CNC technique
Structure, the set-up mode of antenna cabling 202 can reduce the cost due to being made the structure of CNC technique.
Since phosphor bronze has higher corrosion resistance, resistance to oxidation, wear-resistant, fatigue resistance, it can be used in the application
Material of the phosphor bronze as metal layer.
The application provides a kind of electronic equipment, including above-mentioned metal shell.
Illustratively, which can be mobile phone, tablet computer, digital camera or net book.
Wherein, connecting component need to be arranged in the circuit board in electronic equipment, which can be gold-plated elastic slice etc., be used for
Conducting is directly contacted with antenna bridge joint 201, antenna cabling 202.
The application also provides a kind of preparation method of metal shell, as shown in fig. 6, including：
S10, the inner surface formation shielding layer in metal shell 10, shielding layer exposed portion region.
Herein, due to that need to consider aerial signal radiation factor when design metal shell 10, those skilled in the art answer
This knows that metal shell 10 is entirely not metal, and need to be formed on the shell ontology of all-metal non-by related process
Metal antenna exclusion region, so that metal shell 10 also participates in signal radiation as a part of antenna structure.Based on this, this Shen
Please in metal shell 10 refer to：The shell ontology with certain shapes and certain internal structure is obtained by metal material processing,
And to the obtained metal shell 10 including non-metal antenna exclusion region after shell ontology progress series of process.
Exemplary, metal shell 10 can make to be formed at least through following process：It is obtained firstly, carrying out processing to mental section
Such as aluminium alloy, magnalium conjunction can be used in the shell ontology with certain shapes and certain internal structure obtained, the material of shell ontology
The metal materials such as gold, stainless steel, titanium alloy, copper alloy；Due to aluminium alloy specific gravity is low, after, anodic oxidation higher than yield strength it is outer
Seeing can be decorative excellent, therefore material of the aluminium alloy as shell ontology can be used.Later, shell ontology is handled, is engraved
Hollow structure, engraved structure may include antenna partition grooves, earpiece holes, universal serial bus (Universal Serial Bus, abbreviation
USB) hole and speaker hole etc..Later, a nanometer Shooting Technique can be used, engraved structure is molded；Wherein, for antenna every
Fault trough, plastic cement can fill up the antenna partition grooves, form partition plastic strip 102 as shown in Figure 1, the metal part 101 that will be separated
It is linked together；It, can be first by plastic cement when for functions apertures such as camera hole, earpiece holes, the hole USB, speaker hole (not shown in figure 1)s
Full camera hole, earpiece holes, the hole USB, speaker hole etc. are filled, part plastic cement is then removed using milling process, being formed has modeling
Camera hole, earpiece holes, the hole USB, speaker hole of glue inner surface etc..It on this basis, can also be at least to obtained metal shell
10 appearance is surface-treated such as sandblasting, anodization.
In order to which the metal shell to shielding layer institute overlay area is protected, the material of the shielding layer should not be with metal shell
10 metal material reacts, and in removal, the metal layer for not influencing metal shell 10 and being formed.
S11, using spraying process spraying abrasion-proof resistance to oxidation type metal material, in the metal shell 10 that shielding layer is exposed
The region on surface forms the metal layer being closely attached on 10 inner surface of metal shell；Metal layer is a part of antenna structure.
The principle of metal spraying is：The metal material of solid is heated to molten state using heat source, by flame stream or outside
Thrust is added molten drop to be atomized or pushed molten grain at the grain beam of injection, with certain 10 surface of speed impacts metal shell, after cooling
The surface of metal shell 10 is adhered to, metal layer is formed.
Metal wire rod can specifically be melted by spray gun and be atomized into particle, be ejected into the surface of metal shell 10, formed
Metal layer.In spraying process, metal layer can be made to be closely attached on the inner surface of metal shell 10 by controlling technique.
Wherein, metal spraying is small with influencing on metal shell 10, will not influence the metallographic structure and mechanical performance of metal,
It can also make formed metal layer that there are the performances such as wear-resisting, corrosion resistant, resistance to oxidation, high temperature resistant, conduction.
S12, removal shielding layer.
The application provides a kind of preparation method of metal shell, by being pre-formed shielding layer, exposes shielding layer to shape
It, can be during forming metal layer using spraying process at the region of metal layer, it will not be to other regions of metal shell 10
It has an impact, and by control spraying process, the metal shell 10 that metal layer and shielded layer can be made to be exposed is in close contact,
Avoid metal liftoff in use.On this basis, when the metal layer being closely attached on metal shell 10 is located at gold
When belonging to the metal part of shell 10, since the electrical connection of both metal parts of metal layer and its metal shell covered 10 can
Regard one as, and the material of metal layer is wear-resisting resistance to oxidation profile material, thus can be improved region locating for the metal layer it is wear-resistant,
The characteristics such as anti-oxidant, opposite to be not provided with metal layer, there is oxidation, wear and lead to aerial signal in the metal part of corresponding region
The problem of stability reduces, the stability of aerial signal can be improved in the application；When metal layer is located at the nonmetallic of metal shell 10
When antenna exclusion region, since the material of metal layer is wear-resisting resistance to oxidation profile material, thus the stability of aerial signal also can be improved.
Two embodiments are provided below to illustrate the preparation method of metal shell.
Embodiment one provides a kind of preparation method of metal shell, as shown in fig. 7, comprises：
S20, as shown in figure 8, using spraying process formed covering 10 inner surface of metal shell shielding film 30.
Due to paint, ink do not react with metal material, and it is at low cost, easily remove, therefore, shielding film 30
Material can be selected from least one of paint, ink.
S21, as shown in Fig. 9 a, Fig. 9 b and Fig. 9 c, the shielding film of metal layer region to be formed is removed using laser carving technique
30, form shielding layer 301.
Specifically, metal layer may include antenna bridge joint 201 when metal shell 10 includes feeding point region 103, it is based on
This, as illustrated in fig. 9, shielding layer 301 need to expose feeding point region 103.
Further, metal layer may also include antenna cabling 202, be based on this, and as shown in figure 9b, shielding layer 301 is except exposing
Outside feeding point region 103, also expose antenna cabling region 104.
Alternatively, metal layer can only include antenna cabling 202, it is based on this, as is shown in fig. 9 c, shielding layer 301 exposes antenna and walks
Line region 104.
Wherein, carbon dioxide (CO can be used2) laser laser engraving machine removes the shielding film 30 of metal layer region to be formed, shape
At shielding layer 301.
S22, using spraying process spraying abrasion-proof resistance to oxidation type metal material, in the metal shell that shielding layer 301 is exposed
The region of 10 inner surfaces forms the metal layer being closely attached on 10 inner surface of metal shell.
Specifically, as illustrated in fig. 9, it, can shape by spraying process when shielding layer 301 only exposes feeding point region 103
At antenna bridge joint 201 as shown in Figure 10 a, that is, in the case, metal layer only includes antenna bridge joint 201, antenna bridge joint 201
Positioned at feeding point region 103 and covering feeding point region 103.
Wherein, by the metal part in feeding point region 103 on antenna bridge joint 201 and its metal shell 10 covered
Electrical connection, therefore, the two collectively forms feeding point.
A part due to metal shell 10 as antenna structure participates in signal radiation, it is therefore desirable to pass through feeding point and electricity
Connecting component on the plate of road realizes electrical connection, to form the antenna loops such as communication, WiFi, GPS.Wherein, the connection on circuit board
Component can be metal clips (for example, gold-plated elastic slice), directly be contacted by elastic slice with feeding point, realize connecting component and feedback
The conducting of electricity point.
It should be noted that make metal shell 10 participate in signal radiation as a part of antenna structure, it need to be in metal
10 internal production of shell goes out to be used for the structure of radiation signal, wherein CNC technique can be used and go out to use in 10 internal production of metal shell
In the structure of radiation signal.
Relatively antenna bridge joint 201, due in the long-term use, metal shell 10 are not formed in feeding point region 103
Upper feeding point region 103 rubs with metal clips vibration, will lead to the oxidation of feeding point region 103 on metal shell 10, abrasion and
Increase contact resistance, so as to cause the reduction of antenna loop electrical connection properties, the stability of aerial signal declines, thus, this Shen
Antenna bridge joint 201 please is formed in feeding point region 103, this problem can be improved.
As shown in figure 9b, when shielding layer 301 is in addition to exposing feeding point region 103, also exposes antenna cabling region 104,
By spraying process, antenna bridge joint 201 and antenna cabling 202 as shown in fig. lob can be formed, that is, in the case, metal layer
Including antenna bridge joint 201 and antenna cabling 202.
That is, carrying out signal radiation using metal shell 10 in some antennas circuit, some antennas is walked in circuit using antenna
Line 202 carries out signal radiation.
Wherein, antenna cabling 202 is formed in the non-metal antenna exclusion region of metal shell 10, i.e., on plastic strip 102.
It is opposite to realize signal radiation using the setting cabling realization on PCB, or using FPC, when metal layer includes antenna
Cabling 202 can save space occupied by corresponding PCB, FPC when making antenna cabling 202 for signal radiation, for production
Super-thin electronic equipment provides possibility.
As is shown in fig. 9 c, it when shielding layer 301 only exposes antenna cabling region 104, by spraying process, can be formed such as figure
Antenna cabling 202 shown in 10c, that is, in the case, metal layer only includes antenna cabling 202.
It is opposite to realize signal radiation using the setting cabling realization on PCB, or using FPC, when metal layer includes antenna
Cabling 202 can save space occupied by corresponding PCB, FPC when making antenna cabling 202 for signal radiation, for production
Super-thin electronic equipment provides possibility.It is opposite to go out to be used for the knot of radiation signal in 10 internal production of metal shell using CNC technique
Structure, the set-up mode of antenna cabling 202 can reduce the cost due to being made the structure of CNC technique.
On the basis of the above, since phosphor bronze has higher corrosion resistance, resistance to oxidation, wear-resistant, fatigue resistance,
Material of the phosphor bronze as metal layer can be used.
S23, shielding layer 301 is removed using ultrasonic washing process.
Ultrasonic wave water washing is that ultrasonic vibration is added in aqueous solution, and liquid is made to generate " cavitation effect ".When ultrasonic wave is sparse
Shi Shengcheng bubble, when extruding, crush bubble, mechanical impact force are generated around, to remove shielding layer.
It is washed using ultrasound and removes shielding layer, metal shell 10 will not can impacted.
On this basis, since the appearance of metal shell 10 generally all needs to carry out anodic oxidation, with protective effect,
And can also carry out dyeing and obtain decorative effect, and when carrying out anodic oxidation to 10 appearance of metal shell, it is also possible to while it is right
The metal part of 10 inner surface of metal shell carries out anodic oxidation, therefore, as shown in figure 11, after S21, before S22, the system
Preparation Method further includes：The oxide layer of S24,10 inner surface of metal shell exposed using laser carving technique removal shielding layer 301.With
Guarantee that metal layer is electrically connected with the metal part of its metal shell 10 covered.
Specifically, the oxide layer for 10 inner surface of metal shell that optical fiber laser engraving machine removal shielding layer 301 is exposed can be used.
Embodiment two provides a kind of preparation method of metal shell, as shown in figure 12, including：
S30, the shielding film 30 that covering metal shell inner surface is formed using coating technique.
That is, shielding film 30 is attached at 10 inner surface of metal shell.
S31, the shielding film 30 that metal layer region to be formed is removed using laser carving technique form shielding layer 301.
Specifically, the region that shielding layer 301 is exposed can refer to Fig. 9 a~Fig. 9 c.
Wherein, CO can be used2Laser laser engraving machine removes the shielding film 30 of metal layer region to be formed, forms shielding layer
301。
S32, using spraying process spraying abrasion-proof resistance to oxidation type metal material, in the metal shell that shielding layer 301 is exposed
The region of 10 inner surfaces forms the metal layer being closely attached on 10 inner surface of metal shell.
Specifically, metal layer can refer to Figure 10 a~Figure 10 c and associated description.
Since phosphor bronze has higher corrosion resistance, resistance to oxidation, wear-resistant, fatigue resistance, phosphor bronze work can be used
For the material of metal layer.
S33, shielding layer 301 is removed.
Since the appearance of metal shell 10 generally all needs to carry out anodic oxidation, can be carried out with protective effect, and also
Dyeing obtains decorative effect, and when carrying out anodic oxidation to 10 appearance of metal shell, it is also possible to while to metal shell 10
The metal part of inner surface carries out anodic oxidation, and therefore, as shown in figure 13, after S31, before S32, which is also wrapped
It includes：The oxide layer of S34,10 inner surface of metal shell exposed using laser carving technique removal shielding layer 301.To guarantee metal layer
It is electrically connected with the metal part of its metal shell 10 covered.
Specifically, the oxide layer for 10 inner surface of metal shell that optical fiber laser engraving machine removal shielding layer 301 is exposed can be used.
Claims (15)
1. a kind of metal shell, which is characterized in that further include being sprayed on the metal shell inner surface including metal shell
Metal layer, the metal layer are a part of antenna structure；
The metal layer is closely attached on the inner surface of the metal shell, and the material of the metal layer is wear-resisting resistance to oxidation
Profile material.
2. metal shell according to claim 1, which is characterized in that the metal shell includes feeding point region；
The metal layer includes antenna bridge joint, and the antenna bridge joint is located at the feeding point region and the covering feeding point area
Domain.
3. metal shell according to claim 1 or 2, which is characterized in that the metal layer includes antenna cabling.
4. metal shell according to claim 1-3, which is characterized in that the material of the metal layer includes phosphorus blueness
Copper.
5. a kind of electronic equipment, which is characterized in that including the described in any item metal shells of claim 1-4.
6. a kind of preparation method of metal shell, which is characterized in that including：
Shielding layer, shielding layer exposed portion region are formed in the inner surface of metal shell；
Using spraying process spraying abrasion-proof resistance to oxidation type metal material, the table in the metal shell that the shielding layer is exposed
The region in face forms the metal layer being closely attached on the metal shell inner surface；The metal layer is the one of antenna structure
Part；
Remove the shielding layer.
7. preparation method according to claim 6, which is characterized in that the metal shell includes feeding point region；
The metal layer includes antenna bridge joint, and the antenna bridge joint is located at the feeding point region and the covering feeding point area
Domain.
8. preparation method according to claim 6 or 7, which is characterized in that the metal layer includes antenna cabling.
9. according to the described in any item preparation methods of claim 6-8, which is characterized in that use spraying process spray metal material
Material, in the region for the metal shell inner surface that the shielding layer is exposed, formation is closely attached in the metal shell
Metal layer on surface, including：
The fusing of phosphor bronze material is ejected on the metal shell inner surface, in the metal-back that the shielding layer is exposed
The region on internal surface, forms the metal layer being closely attached on the metal shell inner surface.
10. according to the described in any item preparation methods of claim 6-9, which is characterized in that formed in the inner surface of metal shell
Shielding layer, including：
The shielding film for covering the metal shell inner surface is formed using spraying process；
The shielding film that the metal layer region to be formed is removed using laser carving technique, forms the shielding layer.
11. according to the described in any item preparation methods of claim 6-9, which is characterized in that formed in the inner surface of metal shell
Shielding layer, including：
The shielding film for covering the metal shell inner surface is formed using coating technique；
The shielding film that the metal layer region to be formed is removed using laser carving technique, forms the shielding layer.
12. preparation method described in 0 or 11 according to claim 1, which is characterized in that the interior table of the metal shell passes through anode
Change processing；
In the shielding film for removing the metal layer region to be formed using laser carving technique, formed after the shielding layer,
Before forming the metal layer using spraying process, the method also includes：
The oxide layer for the metal shell inner surface that the shielding layer is exposed is removed using laser carving technique.
13. preparation method according to claim 10, which is characterized in that the shielding layer is removed, including：
The shielding layer is removed using ultrasonic washing process.
14. preparation method according to claim 11, which is characterized in that the shielding layer is removed, including：
Remove the shielding layer.
15. preparation method according to claim 6, which is characterized in that the material of the shielding layer includes painting, in ink
At least one.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/084207 WO2018205281A1 (en) | 2017-05-12 | 2017-05-12 | Metal casing and manufacturing method therefor, and electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108886880A true CN108886880A (en) | 2018-11-23 |
| CN108886880B CN108886880B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780018388.XA Active CN108886880B (en) | 2017-05-12 | 2017-05-12 | Metal shell, preparation method thereof and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN108886880B (en) |
| WO (1) | WO2018205281A1 (en) |
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| CN109465169A (en) * | 2018-12-28 | 2019-03-15 | 深圳市金中瑞通讯技术有限公司 | A kind of spraying method of anti-static coating |
| CN109628873A (en) * | 2018-12-28 | 2019-04-16 | 深圳市金中瑞通讯技术有限公司 | A kind of spraying method of feeding point |
| CN110581344A (en) * | 2019-08-16 | 2019-12-17 | 华为技术有限公司 | mobile terminal shell, mobile terminal and preparation method of shell |
| CN111786076A (en) * | 2020-07-07 | 2020-10-16 | 深圳市杰瑞表面技术有限公司 | Antenna cover plate and communication equipment |
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| CN101257140A (en) * | 2007-03-02 | 2008-09-03 | 耀登科技股份有限公司 | Method for manufacturing aerial module group through laser engraving |
| US20090278757A1 (en) * | 2008-05-06 | 2009-11-12 | Samsung Electronics Co. Ltd. | Mobile terminal having metal case and antenna structure |
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| CN109465169A (en) * | 2018-12-28 | 2019-03-15 | 深圳市金中瑞通讯技术有限公司 | A kind of spraying method of anti-static coating |
| CN109628873A (en) * | 2018-12-28 | 2019-04-16 | 深圳市金中瑞通讯技术有限公司 | A kind of spraying method of feeding point |
| CN110581344A (en) * | 2019-08-16 | 2019-12-17 | 华为技术有限公司 | mobile terminal shell, mobile terminal and preparation method of shell |
| CN110581344B (en) * | 2019-08-16 | 2021-06-29 | 华为技术有限公司 | Mobile terminal shell, mobile terminal and preparation method of shell |
| CN111786076A (en) * | 2020-07-07 | 2020-10-16 | 深圳市杰瑞表面技术有限公司 | Antenna cover plate and communication equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108886880B (en) | 2020-07-07 |
| WO2018205281A1 (en) | 2018-11-15 |
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