WO2015076479A1 - Bracket for mobile communication terminal and manufacturing method therefor - Google Patents

Bracket for mobile communication terminal and manufacturing method therefor Download PDF

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Publication number
WO2015076479A1
WO2015076479A1 PCT/KR2014/007386 KR2014007386W WO2015076479A1 WO 2015076479 A1 WO2015076479 A1 WO 2015076479A1 KR 2014007386 W KR2014007386 W KR 2014007386W WO 2015076479 A1 WO2015076479 A1 WO 2015076479A1
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Prior art keywords
inner plate
bracket
communication terminal
mobile communication
die casting
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PCT/KR2014/007386
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French (fr)
Korean (ko)
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제갈현섭
노청현
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천진엠앤씨전자유한공사
제갈현섭
노청현
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Publication of WO2015076479A1 publication Critical patent/WO2015076479A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3888—Arrangements for carrying or protecting transceivers

Definitions

  • the present invention relates to a bracket for a mobile communication terminal and a method of manufacturing the same, and more particularly, to light weight, to protect the internal parts of the mobile communication terminal, to enhance the appearance by using plating, deposition, painting, etc.
  • the present invention relates to a bracket for a mobile communication terminal and a method of manufacturing the same, which can not only easily release heat generated inside the mobile communication terminal to the outside, but also reduce manufacturing cost and manufacturing time.
  • the housing of a mobile communication terminal such as a mobile phone, a smart phone, etc. should be light in weight, not only to protect internal components, but also to be easy to dissipate heat generated from the inside.
  • the bracket for the mobile communication terminal metal
  • zinc alloy, aluminum alloy, magnesium alloy is used a lot, mainly made of the interior of the mobile communication terminal.
  • the housing of the mobile communication terminal should be able to protect the internal components from external shocks, it should be easy to dissipate the heat transferred from the interior material to the outside, the appearance should give a luxurious feel.
  • the exterior bracket of the mobile communication terminal is mainly used to create a metal-like appearance by inserting a plastic insert into the outer portion of the bracket for the interior of the mobile communication terminal through vacuum deposition.
  • the bracket for the exterior material of the mobile communication terminal is made of zinc alloy, aluminum alloy, magnesium alloy, etc., and may be inserted into the bracket for the interior material of the mobile communication terminal or combined using screws. Not only the cost required for the manufacture of the communication terminal bracket excessively increases, but also the manufacturing time is long, there is a problem that the production capacity is reduced.
  • Patent Document 1 Registered Patent Publication No. 10-0992520 (Registration Date: November 1, 2010)
  • the present invention has been made to solve the above problems, the weight is light, protects the internal parts of the mobile communication terminal, and can enhance the appearance by using plating, deposition, coating, etc., mobile communication terminal It is an object of the present invention to provide a bracket for a mobile communication terminal and a method of manufacturing the same, which can not only easily release heat generated from the inside to the outside, but also reduce manufacturing cost and manufacturing time.
  • the inner plate formed of a metal alloy material formed by a primary die casting (die casting) die; And an outer portion formed by inserting the inner plate into the secondary die casting mold, and then forming a secondary die cast of a metal alloy of a material different from that of the inner plate on the edge of the inner plate.
  • the above-described bracket for a mobile communication terminal has a plurality of holes (grooves) or grooves (groove) are formed at the edge of the interior plate, the outer portion is formed to surround the side of the interior plate surrounding the hole or groove formed in the interior plate do.
  • the upper and lower jaw is formed on the edge of the inner plate, the outer portion may be molded to surround the side of the inner plate surrounding the jaw formed in the inner plate.
  • the interior plate is made of aluminum alloy or magnesium alloy
  • the outer portion is made of zinc alloy.
  • the inner plate and the outer part are anodized after die casting, respectively, to prevent corrosion, and the outer part can be processed by buffing or CNC (Computer Numerical Control) after die casting and then finished by plating, painting or deposition process. have.
  • buffing or CNC Computer Numerical Control
  • Method of manufacturing a bracket for a mobile communication terminal for achieving the above object comprises the steps of: molding a built-in plate of a metal alloy material by a primary die casting mold; And inserting the inner plate into the secondary die-casting mold, and molding the outer portion of the inner plate by forming the outer portion formed of a metal alloy of a material different from that of the inner plate.
  • the above-described method of manufacturing a bracket for a mobile communication terminal may further include forming a plurality of holes or grooves at an edge of the embedded plate.
  • the outer portion is molded to surround the side of the inner plate surrounding the hole or groove formed in the inner plate.
  • the step of forming the interior plate to form the interior plate so that the upper and lower jaw is formed on the edge the step of forming the outer portion to be formed to surround the side of the interior plate surrounding the jaw formed in the interior plate Can be.
  • the interior plate is made of aluminum alloy or magnesium alloy, the outer portion may be made of zinc alloy.
  • the inner plate and the outer part may be anodized after die casting, respectively, to prevent corrosion, and the outer part may be processed by buffing or CNC work after die casting, and then finished by plating, painting or deposition process.
  • FIG. 1 is a view showing an example of a built-in plate molded by a die casting (Die Casting) method according to an embodiment of the present invention
  • FIG. 2 is a view showing an example of a hole formed in the inner plate shown in FIG. 1;
  • FIG. 3 is a view showing an example of a groove formed in the inner plate shown in FIG.
  • FIG. 4 is a view showing an example in which the outer portion is molded in the interior plate shown in FIG.
  • FIG. 5 is a view showing an example of the jaw formed in the interior plate shown in FIG.
  • FIG. 6 is a view showing an example in which the outer portion is formed to surround the jaw of the built-in plate shown in FIG.
  • FIG. 7 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to an embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to another embodiment of the present invention.
  • FIG. 1 is a view showing an example of the interior plate formed by the die casting (Die Casting) method according to an embodiment of the present invention.
  • the inner plate 100 is primary die casted by a die casting method using a die casting mold.
  • the die casting method is a casting method in which molten metal is injected into a mold and solidified at a high pressure of 10 to 200 MPa.
  • Die casting method is not suitable for small quantity production because of high mold cost, but in mass production, it has advantages such as high dimensional precision, beautiful casting surface and thin castings. It is widely used to parts, daily necessities, and the like.
  • the interior plate 100 may be made of an aluminum alloy or a magnesium alloy.
  • a die casting mold for die casting the inner plate 100 may use a known die casting mold, and a detailed description thereof will be omitted.
  • the interior plate 100 may have a plurality of holes 110 at its edge as shown in FIGS. 1 and 2, or may have a plurality of grooves 120 at its edge as shown in FIG. 3. have.
  • the hole 110 is formed to penetrate from the upper surface of the interior plate 100 to the lower surface.
  • the penetrating shape may be any shape.
  • the groove 120 may be formed at a position spaced a predetermined distance from the edge of the interior plate 100, the shape of the groove 120 may be made in any form.
  • each hole 110 or the groove 120 may be provided after the die casting of the inner plate 100 is completed, or may be formed in the die casting process by the die casting mold.
  • the drawing shows that the hole 110 or the groove 120 is formed at one side of the edge of the interior plate 100, the hole 110 or the groove 120 is formed around the edge of the interior plate 100 May be
  • the interval of each hole 110 or the groove 120 is shown as being formed uniformly, the interval between each hole 110 or the groove 120 may be variously modified.
  • each of the holes 110 and the grooves 120 may be mixed with each other and formed at the edge of the interior plate 100.
  • anodizing is a kind of aluminum or magnesium coating, refers to the product surface post-processing to form an oxide film on the surface of the product to prevent oxidation of the product and increase the durability of the product.
  • Anodizing can form anodizing films up to 200 microns, depending on the material, using a crossflow rectifier or a sulfuric acid method in which organic acids are mixed.
  • the outer portion 200 is primary die-casting molding and inserting the inner plate 100, the hole 110 or the groove 120 is formed at the edge of the secondary die casting mold, and then to the edge of the inner plate 100 It is made by molding a metal alloy of a material different from that of the interior plate 100 by a secondary die casting method.
  • the outer portion 200 is made of a zinc alloy, it is formed to surround the hole 110 or the groove 120 formed on the edge of the interior plate 100 to surround the side of the interior plate 100 desirable.
  • the outer portion 200 may prevent corrosion by performing anodizing similarly to the inner plate 100 after the secondary die casting is completed.
  • the outer portion 200 may be finished by plating, painting or deposition after processing by using buffing or CNC (Computer Numerical Control) after the second die casting.
  • buffing or CNC operation can follow a known technique, a detailed description thereof will be omitted.
  • the outer portion 200 formed as described above is luxurious in appearance and is prevented from being caught out of the hole 110 or the groove 120 formed at the edge of the inner plate 100 and separated from the outside, and the inner plate 100. Receives heat generated from the inside can be released to the outside, it is possible to protect the internal components of the mobile communication terminal.
  • FIG. 5 is a view showing an example of the jaw formed in the inner plate shown in FIG.
  • the inner plate 100 may include a jaw 130 in the upper and lower directions instead of forming a hole 110 or a groove 120 at an edge thereof.
  • the height of the jaw formed in the upper and lower directions in the drawing is shown to be the same, but each height may be formed differently.
  • the upper and lower jaws formed on the edge of the inner plate 100 is preferably made in the process of die casting the inner plate 100 in the primary die casting mold. In addition, it is preferable to prevent the corrosion by performing the anodizing, as described above, the interior plate 100 where primary die casting is completed.
  • the outer part 200 inserts the inner plate 100 into the secondary die casting mold, and then, as shown in FIG. 6, a metal alloy of a material different from that of the inner plate 100 is formed at the edge of the inner plate 100. It is molded by secondary die casting. At this time, the outer portion 200 is made of a zinc alloy as described above, and is preferably molded to surround the side surface of the inner plate 100 surrounding the jaw 130 formed on the edge of the inner plate 100. .
  • FIG. 7 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to an embodiment of the present invention.
  • the inner plate 100 is formed by using a die casting method in which a molten metal of an aluminum alloy or a magnesium alloy is injected into a first die casting mold and then solidified (S110).
  • the interior plate 100 has a hole 110 or a groove 120 formed at its edge (S120).
  • the hole 110 or the groove 120 may be formed by a die casting method by a primary die casting mold instead of being formed after die casting of the inner plate 100 is completed.
  • the inner die plate 100 of which primary die casting is completed is inserted into a secondary die casting mold, and the outer die 200 made of a metal alloy of a material different from that of the inner plate 100 is formed at the edge of the inner die plate 100. Molding (S130). At this time, the outer portion 200 is preferably formed to surround the side of the interior plate 100 to surround the hole 110 or groove 120 formed on the edge of the interior plate (100). In addition, the outer portion 200 is preferably molded by injecting the molten metal of the zinc alloy into the secondary die casting mold and then solidified.
  • the interior plate 100 and the outer portion 200 are preferably anodized after die casting, respectively, to prevent corrosion.
  • the outer portion 200 is preferably processed by a buffing or a CNC operation after the secondary die casting, and then finished by plating, painting or deposition process.
  • FIG. 8 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to another embodiment of the present invention.
  • the interior plate 100 is molded by injecting a molten metal of an aluminum alloy or magnesium alloy into the primary die casting mold and solidified (S210). At this time, the inner plate 100 is preferably formed in the upper and lower jaw 130 on the edge in the process of die casting through the primary die casting mold.
  • the inner die plate 100 having completed the primary die casting is inserted into the secondary die casting mold, and the outer portion 200 is secondary die-casted by injecting a molten metal of zinc alloy into the edge thereof (S220).
  • the outer portion 200 is preferably molded to surround the side surface of the inner plate 100 surrounding the jaw 130 formed on the inner plate (100).
  • the interior plate 100 and the outer portion 200 are each anodized after die casting to prevent corrosion, and the outer portion 200 is processed by buffing or CNC work after secondary die casting, plating, painting or It is desirable to finish through a deposition process.
  • the bracket for the interior material of the mobile communication terminal is made by a die casting method using aluminum alloy, magnesium alloy, etc., the weight is light and the internal parts of the mobile communication terminal can be protected. Will be.
  • the bracket for the exterior material of the mobile communication terminal is made of a double die casting method using a zinc alloy, the appearance can be enhanced by plating, deposition, painting, etc., and heat generated inside the mobile communication terminal can be improved. Not only can be easily released to the outside, it is possible to reduce the manufacturing cost and manufacturing time.

Abstract

Disclosed are a bracket for a mobile communication terminal and a manufacturing method therefor. The bracket for a mobile communication terminal, according to the present invention, comprises an inner plate made of metal alloy which is molded by a primary die casting mold; an outer part which is molded at an edge of the inner plate by a secondary die casting of metal alloy made of a material different from that of the inner plate after the inner plate is inserted into a secondary die casting mold.

Description

이동통신단말기용 브라켓 및 그 제조방법Bracket for mobile communication terminal and manufacturing method
본 발명은 이동통신단말기용 브라켓 및 그 제조방법에 관한 것으로서, 보다 상세하게는 그 무게가 가벼우며, 이동통신단말기의 내부부품을 보호하고, 도금, 증착, 도장 등을 이용하여 외관을 고급스럽게 할 수 있고, 이동통신단말기의 내부에서 발생하는 열을 외부로 용이하게 방출할 수 있을 뿐만 아니라, 제조비용 및 제조시간을 단축시킬 수 있는 이동통신단말기용 브라켓 및 그 제조방법에 관한 것이다.The present invention relates to a bracket for a mobile communication terminal and a method of manufacturing the same, and more particularly, to light weight, to protect the internal parts of the mobile communication terminal, to enhance the appearance by using plating, deposition, painting, etc. The present invention relates to a bracket for a mobile communication terminal and a method of manufacturing the same, which can not only easily release heat generated inside the mobile communication terminal to the outside, but also reduce manufacturing cost and manufacturing time.
일반적으로 휴대폰, 스마트폰 등과 같은 이동통신단말기의 하우징은 그 무게가 가벼워야하며, 내부부품을 보호할 수 있어야할 뿐만 아니라, 내부에서 발생되는 열을 외부로 방출하기 용이하여야 한다. 이와 같은 이유로, 이동통신단말기용 브라켓(bracket)은 아연합금, 알루미늄 합금, 마그네슘 합금 등의 금속이 많이 이용되며, 주로 이동통신단말기의 내장재로 만들어진다.In general, the housing of a mobile communication terminal such as a mobile phone, a smart phone, etc. should be light in weight, not only to protect internal components, but also to be easy to dissipate heat generated from the inside. For this reason, the bracket for the mobile communication terminal (metal) such as zinc alloy, aluminum alloy, magnesium alloy is used a lot, mainly made of the interior of the mobile communication terminal.
한편, 이동통신단말기의 하우징은 외부의 충격으로부터 내부부품을 보호할 수 있어야 하며, 내장재로부터 전달받은 열을 외부로 방출하기 용이하여야 하고, 그 외관이 고급스러운 느낌을 주어야 한다. 이와 같은 이유로, 이동통신단말기의 외장재용 브라켓은 이동통신단말기의 내장재용 브라켓의 외곽에 플라스틱을 인서트 사출한 후 진공증착을 통해 금속 느낌의 외관을 만드는 방법이 주로 사용된다.On the other hand, the housing of the mobile communication terminal should be able to protect the internal components from external shocks, it should be easy to dissipate the heat transferred from the interior material to the outside, the appearance should give a luxurious feel. For this reason, the exterior bracket of the mobile communication terminal is mainly used to create a metal-like appearance by inserting a plastic insert into the outer portion of the bracket for the interior of the mobile communication terminal through vacuum deposition.
그러나 이와 같은 이동통신단말기의 외장재용 브라켓은 실제로는 플라스틱으로 이루어지기 때문에 내부부품의 보호와 내부 열의 방출이 금속 합금에 비하여 떨어지는 문제점이 있다.However, since the bracket for the exterior material of the mobile communication terminal is actually made of plastic, there is a problem that the protection of the internal parts and the emission of internal heat are inferior to those of the metal alloy.
이로 인해, 이동통신단말기의 외장재용 브라켓은 아연합금, 알루미늄 합금, 마그네슘 합금 등을 이용하여 그 형상을 만들고, 이동통신단말기의 내장재용 브라켓에 끼우거나 나사 등을 이용하여 결합하기도 하는데, 이 경우 이동통신단말기용 브라켓의 제조에 소요되는 비용이 과다하게 증가할 뿐만 아니라, 그 제조시간이 길어지게 되어 생산능력이 저하되는 문제점이 있다.For this reason, the bracket for the exterior material of the mobile communication terminal is made of zinc alloy, aluminum alloy, magnesium alloy, etc., and may be inserted into the bracket for the interior material of the mobile communication terminal or combined using screws. Not only the cost required for the manufacture of the communication terminal bracket excessively increases, but also the manufacturing time is long, there is a problem that the production capacity is reduced.
[선행기술문헌][Preceding technical literature]
(특허문헌 1) 등록특허공보 제10-0992520호 (등록일자: 2010. 11. 01)(Patent Document 1) Registered Patent Publication No. 10-0992520 (Registration Date: November 1, 2010)
본 발명은 전술한 문제점을 해결하기 위하여 창안된 것으로서, 그 무게가 가벼우며, 이동통신단말기의 내부부품을 보호하고, 도금, 증착, 도장 등을 이용하여 외관을 고급스럽게 할 수 있으며, 이동통신단말기의 내부에서 발생하는 열을 외부로 용이하게 방출할 수 있을 뿐만 아니라, 제조비용 및 제조시간을 단축시킬 수 있는 이동통신단말기용 브라켓 및 그 제조방법을 제공하는 것을 목적으로 한다.The present invention has been made to solve the above problems, the weight is light, protects the internal parts of the mobile communication terminal, and can enhance the appearance by using plating, deposition, coating, etc., mobile communication terminal It is an object of the present invention to provide a bracket for a mobile communication terminal and a method of manufacturing the same, which can not only easily release heat generated from the inside to the outside, but also reduce manufacturing cost and manufacturing time.
전술한 목적을 달성하기 위한 본 발명의 실시예에 따른 이동통신단말기용 브라켓(bracket)은, 1차 다이캐스팅(die casting) 금형에 의해 성형되는 금속합금 재질의 내장판; 및 내장판을 2차 다이캐스팅 금형에 삽입한 후, 내장판의 가장자리에 내장판의 재질과 다른 재질의 금속합금을 2차 다이캐스팅하여 성형되는 외곽부;를 포함하는 것을 특징으로 한다.Bracket for a mobile communication terminal according to an embodiment of the present invention for achieving the above object, the inner plate formed of a metal alloy material formed by a primary die casting (die casting) die; And an outer portion formed by inserting the inner plate into the secondary die casting mold, and then forming a secondary die cast of a metal alloy of a material different from that of the inner plate on the edge of the inner plate.
전술한 이동통신단말기용 브라켓은, 내장판의 가장자리에 복수의 홀(hole) 또는 홈(groove)이 형성되며, 외곽부는 내장판에 형성되는 홀 또는 홈을 둘러싸며 내장판의 측면을 감싸도록 성형된다.The above-described bracket for a mobile communication terminal has a plurality of holes (grooves) or grooves (groove) are formed at the edge of the interior plate, the outer portion is formed to surround the side of the interior plate surrounding the hole or groove formed in the interior plate do.
전술한 이동통신단말기용 브라켓은, 내장판의 가장자리에 상측 및 하측 방향의 턱이 형성되며, 외곽부는 내장판에 형성되는 턱을 둘러싸며 내장판의 측면을 감싸도록 성형될 수도 있다.The above-described bracket for a mobile communication terminal, the upper and lower jaw is formed on the edge of the inner plate, the outer portion may be molded to surround the side of the inner plate surrounding the jaw formed in the inner plate.
여기서, 내장판은 알루미늄 합금 또는 마그네슘 합금으로 이루어지며, 외곽부는 아연 합금으로 이루어진다.Here, the interior plate is made of aluminum alloy or magnesium alloy, the outer portion is made of zinc alloy.
내장판 및 외곽부는 각각 다이캐스팅 후에 아노다이징(anodizing)을 수행하여 부식을 방지하며, 외곽부는 다이캐스팅 후에 버핑 또는 CNC(Computer Numerical Control) 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감될 수 있다.The inner plate and the outer part are anodized after die casting, respectively, to prevent corrosion, and the outer part can be processed by buffing or CNC (Computer Numerical Control) after die casting and then finished by plating, painting or deposition process. have.
전술한 목적을 달성하기 위한 본 발명의 실시예에 따른 이동통신단말기용 브라켓의 제조방법은, 1차 다이캐스팅 금형에 의해 금속합금 재질의 내장판을 성형하는 단계; 및 내장판을 2차 다이캐스팅 금형에 삽입한 후, 내장판의 가장자리에 내장판의 재질과 다른 재질의 금속합금으로 이루어진 외곽부를 2차 다이캐스팅하여 성형하는 단계;를 포함하는 것을 특징으로 한다.Method of manufacturing a bracket for a mobile communication terminal according to an embodiment of the present invention for achieving the above object comprises the steps of: molding a built-in plate of a metal alloy material by a primary die casting mold; And inserting the inner plate into the secondary die-casting mold, and molding the outer portion of the inner plate by forming the outer portion formed of a metal alloy of a material different from that of the inner plate.
전술한 이동통신단말기용 브라켓의 제조방법은, 내장판의 가장자리에 복수의 홀 또는 홈을 형성하는 단계;를 더 포함할 수 있다. 이 경우, 외곽부는 내장판에 형성되는 홀 또는 홈을 둘러싸며 내장판의 측면을 감싸도록 성형한다.The above-described method of manufacturing a bracket for a mobile communication terminal may further include forming a plurality of holes or grooves at an edge of the embedded plate. In this case, the outer portion is molded to surround the side of the inner plate surrounding the hole or groove formed in the inner plate.
여기서, 내장판을 성형하는 단계는 가장자리에 상측 및 하측 방향의 턱이 형성되도록 내장판을 형성하며, 외곽부를 성형하는 단계는 내장판에 형성되는 턱을 둘러싸며 내장판의 측면을 감싸도록 성형할 수 있다.Here, the step of forming the interior plate to form the interior plate so that the upper and lower jaw is formed on the edge, the step of forming the outer portion to be formed to surround the side of the interior plate surrounding the jaw formed in the interior plate Can be.
내장판은 알루미늄 합금 또는 마그네슘 합금으로 이루어지며, 외곽부는 아연 합금으로 이루어질 수 있다.The interior plate is made of aluminum alloy or magnesium alloy, the outer portion may be made of zinc alloy.
내장판 및 외곽부는 각각 다이캐스팅 후에 아노다이징을 수행하여 부식을 방지하며, 외곽부는 다이캐스팅 후에 버핑 또는 CNC 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감되는 것이 바람직하다.The inner plate and the outer part may be anodized after die casting, respectively, to prevent corrosion, and the outer part may be processed by buffing or CNC work after die casting, and then finished by plating, painting or deposition process.
도 1은 본 발명의 실시예에 따라 다이캐스팅(Die Casting) 방법에 의해 성형되는 내장판의 예를 나타낸 도면,1 is a view showing an example of a built-in plate molded by a die casting (Die Casting) method according to an embodiment of the present invention,
도 2는 도 1에 나타낸 내장판에 형성되는 홀(hole)의 예를 나타낸 도면,FIG. 2 is a view showing an example of a hole formed in the inner plate shown in FIG. 1;
도 3은 도 1에 나타낸 내장판에 형성되는 홈의 예를 나타낸 도면,3 is a view showing an example of a groove formed in the inner plate shown in FIG.
도 4는 도 1에 나타낸 내장판에 외곽부가 성형되는 예를 나타낸 도면,4 is a view showing an example in which the outer portion is molded in the interior plate shown in FIG.
도 5는 도 1에 나타낸 내장판에 형성되는 턱의 예를 나타낸 도면,5 is a view showing an example of the jaw formed in the interior plate shown in FIG.
도 6은 외곽부가 도 5에 나타낸 내장판의 턱을 감싸 형성되는 예를 나타낸 도면,6 is a view showing an example in which the outer portion is formed to surround the jaw of the built-in plate shown in FIG.
도 7은 본 발명의 일 실시예에 따른 이동통신단말기용 브라켓의 제조방법을 나타낸 흐름도이고,7 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to an embodiment of the present invention.
도 8은 본 발명의 다른 실시예에 따른 이동통신단말기용 브라켓의 제조방법을 나타낸 흐름도이다.8 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to another embodiment of the present invention.
이하, 첨부도면을 참조하여 본 발명의 실시예에 따른 이동통신단말기용 브라켓 및 그 제조방법을 상세하게 설명한다.Hereinafter, a bracket for a mobile communication terminal and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 실시예에 따라 다이캐스팅(Die Casting) 방법에 의해 성형되는 내장판의 예를 나타낸 도면이다.1 is a view showing an example of the interior plate formed by the die casting (Die Casting) method according to an embodiment of the present invention.
도 1을 참조하면, 내장판(100)은 다이캐스팅 금형을 이용하여 다이캐스팅 방법으로 1차 다이캐스팅 성형된다. 여기서, 다이캐스팅 방법은 10 내지 200 MPa의 고압으로 금형에 용융금속을 주입하여 응고시키는 주조법이다. 다이캐스팅 방법은 금형비용이 높기 때문에 소량생산에는 적합하지 않지만 대량생산의 경우에는 높은 치수정밀도, 미려한 주조표면, 두께가 얇은 주물품을 얻을 수 있는 등의 이점이 있기 때문에 많은 종류의 자동차부품에서부터 전자기기의 부품, 일용품 등에 이르기까지 광범위하게 이용되고 있다. 이때, 내장판(100)은 알루미늄 합금 또는 마그네슘 합금으로 이루어질 수 있다. 또한, 내장판(100)을 다이캐스팅하는 다이캐스팅 금형은 공지된 다이캐스팅 금형을 사용할 수 있으며, 여기서는 그 상세한 설명을 생략한다.Referring to FIG. 1, the inner plate 100 is primary die casted by a die casting method using a die casting mold. Here, the die casting method is a casting method in which molten metal is injected into a mold and solidified at a high pressure of 10 to 200 MPa. Die casting method is not suitable for small quantity production because of high mold cost, but in mass production, it has advantages such as high dimensional precision, beautiful casting surface and thin castings. It is widely used to parts, daily necessities, and the like. At this time, the interior plate 100 may be made of an aluminum alloy or a magnesium alloy. In addition, a die casting mold for die casting the inner plate 100 may use a known die casting mold, and a detailed description thereof will be omitted.
내장판(100)은 도 1 및 도 2에 나타낸 바와 같이 그 가장자리에 복수의 홀(hole)(110)을 구비하거나, 도 3에 나타낸 바와 같이 그 가장자리에 복수의 홈(120)을 구비할 수도 있다. 여기서, 홀(110)은 내장판(100)의 상면으로부터 하면으로 관통하는 형태로 형성된다. 이때, 관통되는 모양은 어떠한 모양이더라도 무방하다. 또한, 홈(120)는 내장판(100)의 가장자리로부터 소정 거리 이격된 위치에 형성될 수 있으며, 홈(120)의 형상은 어떠한 형태로 이루어지더라도 무방하다.The interior plate 100 may have a plurality of holes 110 at its edge as shown in FIGS. 1 and 2, or may have a plurality of grooves 120 at its edge as shown in FIG. 3. have. Here, the hole 110 is formed to penetrate from the upper surface of the interior plate 100 to the lower surface. At this time, the penetrating shape may be any shape. In addition, the groove 120 may be formed at a position spaced a predetermined distance from the edge of the interior plate 100, the shape of the groove 120 may be made in any form.
이 경우, 각각의 홀(110) 또는 홈(120)은 내장판(100)의 다이캐스팅이 완료된 후에 마련되거나, 다이캐스팅 금형에 의한 다이캐스팅 과정에서 형성될 수 있다. 도면에는 내장판(100)의 가장자리의 일 측에 홀(110) 또는 홈(120)이 형성된 것으로 도시하였지만, 이와 같은 홀(110) 또는 홈(120)은 내장판(100)의 가장자리를 둘러서 형성될 수도 있다. 또한, 각각의 홀(110) 또는 홈(120)의 간격은 일정하게 형성된 것으로 도시하였지만, 각각의 홀(110) 또는 홈(120) 사이의 간격은 다양하게 변형될 수도 있다. 또한, 각각의 홀(110) 및 홈(120)은 서로 혼합하여 내장판(100)의 가장자리에 형성될 수도 있다.In this case, each hole 110 or the groove 120 may be provided after the die casting of the inner plate 100 is completed, or may be formed in the die casting process by the die casting mold. Although the drawing shows that the hole 110 or the groove 120 is formed at one side of the edge of the interior plate 100, the hole 110 or the groove 120 is formed around the edge of the interior plate 100 May be In addition, although the interval of each hole 110 or the groove 120 is shown as being formed uniformly, the interval between each hole 110 or the groove 120 may be variously modified. In addition, each of the holes 110 and the grooves 120 may be mixed with each other and formed at the edge of the interior plate 100.
한편, 다이캐스팅 방법에 의해 성형된 내장판(100)은 아노다이징(anodizing)을 수행하여 부식을 방지할 수 있다. 여기서, 아노다이징은 알루미늄 또는 마그네슘 도장의 일종으로서, 제품의 산화를 막고 제품의 내구성을 높이기 위해 제품의 표면에 산화피막을 형성하는 제품표면 후처리가공을 말한다. 아노다이징은 직교류 중첩방식의 정류기 또는 유기산을 혼합한 황산법을 이용하여 재료에 따라 최대 200 미크론까지 아노다이징 피막을 형성할 수 있다. On the other hand, the interior plate 100 formed by the die casting method may be subjected to anodizing (anodizing) to prevent corrosion. Here, anodizing is a kind of aluminum or magnesium coating, refers to the product surface post-processing to form an oxide film on the surface of the product to prevent oxidation of the product and increase the durability of the product. Anodizing can form anodizing films up to 200 microns, depending on the material, using a crossflow rectifier or a sulfuric acid method in which organic acids are mixed.
도 4는 도 1에 나타낸 내장판에 외곽부가 성형되는 예를 나타낸 도면이다. 이때, 외곽부(200)는 1차 다이캐스팅 성형되며 그 가장자리에 홀(110) 또는 홈(120)이 형성된 내장판(100)을 2차 다이캐스팅 금형에 삽입한 후, 내장판(100)의 가장자리에 내장판(100)의 재질과 다른 재질의 금속합금을 2차 다이캐스팅 방법으로 성형하여 이루어진다. 이 경우, 외곽부(200)는 아연 합금으로 이루어지며, 내장판(100)의 가장자리에 형성되는 홀(110) 또는 홈(120)을 둘러싸며 내장판(100)의 측면을 감싸도록 성형되는 것이 바람직하다. 또한, 외곽부(200)는 2차 다이캐스팅이 완료된 후에 내장판(100)과 마찬가지로 아노다이징을 수행하여 부식을 방지할 수 있다. 또한, 외곽부(200)는 2차 다이캐스팅 후에 버핑 또는 CNC(Computer Numerical Control) 작업을 이용하여 가공한 후에 도금, 도장 또는 증착 공정을 통해 마감될 수 있다. 여기서, 버핑 또는 CNC 작업은 공지된 기술을 따를 수 있으며, 이에 대한 상세한 설명은 생략한다.4 is a view showing an example in which the outer portion is molded in the interior plate shown in FIG. At this time, the outer portion 200 is primary die-casting molding and inserting the inner plate 100, the hole 110 or the groove 120 is formed at the edge of the secondary die casting mold, and then to the edge of the inner plate 100 It is made by molding a metal alloy of a material different from that of the interior plate 100 by a secondary die casting method. In this case, the outer portion 200 is made of a zinc alloy, it is formed to surround the hole 110 or the groove 120 formed on the edge of the interior plate 100 to surround the side of the interior plate 100 desirable. In addition, the outer portion 200 may prevent corrosion by performing anodizing similarly to the inner plate 100 after the secondary die casting is completed. In addition, the outer portion 200 may be finished by plating, painting or deposition after processing by using buffing or CNC (Computer Numerical Control) after the second die casting. Here, the buffing or CNC operation can follow a known technique, a detailed description thereof will be omitted.
이와 같이 성형된 외곽부(200)는 그 외관이 고급스러우며, 내장판(100)의 가장자리에 형성된 홀(110) 또는 홈(120)에 걸려 외측으로 분리될 염려가 방지되고, 내장판(100)으로부터 내부에 발생된 열을 전달받아 외부로 방출할 수 있으며, 이동통신단말기의 내부부품을 보호할 수 있게 된다.The outer portion 200 formed as described above is luxurious in appearance and is prevented from being caught out of the hole 110 or the groove 120 formed at the edge of the inner plate 100 and separated from the outside, and the inner plate 100. Receives heat generated from the inside can be released to the outside, it is possible to protect the internal components of the mobile communication terminal.
도 5는 도 1에 나타낸 내장판에 형성되는 턱의 예를 나타낸 도면이다. 5 is a view showing an example of the jaw formed in the inner plate shown in FIG.
도 5를 참조하면, 내장판(100)은 그 가장자리에 홀(110) 또는 홈(120)을 형성하는 대신에 상측 및 하측 방향의 턱(130)을 구비할 수 있다. 이때, 도면에는 상측 및 하측 방향에 형성되는 턱의 높이가 서로 동일한 것으로 도시하였지만, 각각의 높이는 서로 다르게 형성되어도 무방하다. 이와 같은 내장판(100)의 가장자리에 형성되는 상측 및 하측 방향의 턱은 내장판(100)을 1차 다이캐스팅 금형에서 다이캐스팅하는 과정에서 이루어지는 것이 바람직하다. 또한, 1차 다이캐스팅이 완료된 내장판(100)은 전술한 바와 같이 아노다이징을 수행하여 부식을 방지하는 것이 바람직하다.Referring to FIG. 5, the inner plate 100 may include a jaw 130 in the upper and lower directions instead of forming a hole 110 or a groove 120 at an edge thereof. At this time, the height of the jaw formed in the upper and lower directions in the drawing is shown to be the same, but each height may be formed differently. The upper and lower jaws formed on the edge of the inner plate 100 is preferably made in the process of die casting the inner plate 100 in the primary die casting mold. In addition, it is preferable to prevent the corrosion by performing the anodizing, as described above, the interior plate 100 where primary die casting is completed.
외곽부(200)는 내장판(100)을 2차 다이캐스팅 금형에 삽입한 후, 도 6에 도시한 바와 같이 내장판(100)의 가장자리에 내장판(100)의 재질과 다른 재질의 금속합금을 2차 다이캐스팅하여 성형된다. 이때, 외곽부(200)는 전술한 바와 같이 아연 합금으로 이루어지며, 내장판(100)의 가장자리에 형성되는 턱(130)을 둘러싸며 내장판(100)의 측면을 감싸도록 성형되는 것이 바람직하다.The outer part 200 inserts the inner plate 100 into the secondary die casting mold, and then, as shown in FIG. 6, a metal alloy of a material different from that of the inner plate 100 is formed at the edge of the inner plate 100. It is molded by secondary die casting. At this time, the outer portion 200 is made of a zinc alloy as described above, and is preferably molded to surround the side surface of the inner plate 100 surrounding the jaw 130 formed on the edge of the inner plate 100. .
도 7은 본 발명의 일 실시예에 따른 이동통신단말기용 브라켓의 제조방법을 나타낸 흐름도이다.7 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to an embodiment of the present invention.
도 1 내지 도 4, 및 도 7을 참조하면, 1차 다이캐스팅 금형에 알루미늄 합금 또는 마그네슘 합금의 용융금속을 주입한 후 응고시키는 다이캐스팅 방법을 이용하여 내장판(100)을 성형한다(S110). 1 to 4 and 7, the inner plate 100 is formed by using a die casting method in which a molten metal of an aluminum alloy or a magnesium alloy is injected into a first die casting mold and then solidified (S110).
이후, 내장판(100)은 그 가장자리에 홀(110) 또는 홈(120)이 형성된다(S120). 그러나, 홀(110) 또는 홈(120)은 내장판(100)의 다이캐스팅이 완료된 후에 형성되는 대신에 1차 다이캐스팅 금형에 의해 다이캐스팅 방법으로 형성될 수도 있다.Thereafter, the interior plate 100 has a hole 110 or a groove 120 formed at its edge (S120). However, the hole 110 or the groove 120 may be formed by a die casting method by a primary die casting mold instead of being formed after die casting of the inner plate 100 is completed.
1차 다이캐스팅가 완료된 내장판(100)은 2차 다이캐스팅 금형에 삽입되며, 내장판(100)의 가장자리에 내장판(100)의 재질과 다른 재질의 금속합금으로 이루어진 외곽부(200)를 2차 다이캐스팅하여 성형한다(S130). 이때, 외곽부(200)는 내장판(100)의 가장자리에 형성된 홀(110) 또는 홈(120)을 둘러싸며 내장판(100)의 측면을 감싸도록 성형되는 것이 바람직하다. 또한, 외곽부(200)는 2차 다이캐스팅 금형에 아연 합금의 용융금속을 주입한 후 응고시켜 성형되는 것이 바람직하다.The inner die plate 100 of which primary die casting is completed is inserted into a secondary die casting mold, and the outer die 200 made of a metal alloy of a material different from that of the inner plate 100 is formed at the edge of the inner die plate 100. Molding (S130). At this time, the outer portion 200 is preferably formed to surround the side of the interior plate 100 to surround the hole 110 or groove 120 formed on the edge of the interior plate (100). In addition, the outer portion 200 is preferably molded by injecting the molten metal of the zinc alloy into the secondary die casting mold and then solidified.
이와 같은 과정에서 내장판(100) 및 외곽부(200)는 각각 다이캐스팅 후에 아노다이징을 수행하여 부식을 방지하는 것이 바람직하다. 또한, 외곽부(200)는 2차 다이캐스팅 후에 버핑 또는 CNC 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감 처리되는 것이 바람직하다.In such a process, the interior plate 100 and the outer portion 200 are preferably anodized after die casting, respectively, to prevent corrosion. In addition, the outer portion 200 is preferably processed by a buffing or a CNC operation after the secondary die casting, and then finished by plating, painting or deposition process.
도 8은 본 발명의 다른 실시예에 따른 이동통신단말기용 브라켓의 제조방법을 나타낸 흐름도이다.8 is a flowchart illustrating a method of manufacturing a bracket for a mobile communication terminal according to another embodiment of the present invention.
도 5, 도 6 및 도 8을 참조하면, 내장판(100)은 1차 다이캐스팅 금형에 알루미늄 합금 또는 마그네슘 합금의 용융금속을 주입한 후 응고시켜 성형된다(S210). 이때, 내장판(100)는 1차 다이캐스팅 금형을 통해 그 다이캐스팅하는 과정에서 가장자리에 상측 및 하측 방향의 턱(130)이 형성되는 것이 바람직하다.5, 6 and 8, the interior plate 100 is molded by injecting a molten metal of an aluminum alloy or magnesium alloy into the primary die casting mold and solidified (S210). At this time, the inner plate 100 is preferably formed in the upper and lower jaw 130 on the edge in the process of die casting through the primary die casting mold.
1차 다이캐스팅이 완료된 내장판(100)은 2차 다이캐스팅 금형에 삽입되며, 그 가장자리에 아연 합금의 용융금속을 주입한 훙 응고시켜 외곽부(200)를 2차 다이캐스팅 성형한다(S220). 이때, 외곽부(200)는 내장판(100)에 형성된 턱(130)을 둘러싸며 내장판(100)의 측면을 감싸도록 성형되는 것이 바람직하다. The inner die plate 100 having completed the primary die casting is inserted into the secondary die casting mold, and the outer portion 200 is secondary die-casted by injecting a molten metal of zinc alloy into the edge thereof (S220). At this time, the outer portion 200 is preferably molded to surround the side surface of the inner plate 100 surrounding the jaw 130 formed on the inner plate (100).
또한, 내장판(100) 및 외곽부(200)는 각각 다이캐스팅 후에 아노다이징을 수행하여 부식을 방지하며, 외곽부(200)는 2차 다이캐스팅 후에 버핑 또는 CNC 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감 처리되는 것이 바람직하다.In addition, the interior plate 100 and the outer portion 200 are each anodized after die casting to prevent corrosion, and the outer portion 200 is processed by buffing or CNC work after secondary die casting, plating, painting or It is desirable to finish through a deposition process.
본 발명에 따르면, 이동통신단말기의 내장재용 브라켓이 알루미늄 합금, 마그네슘 합금 등을 이용하여 다이캐스팅(Die Casting) 방법에 의해 만들어지기 때문에, 그 무게가 가벼우며, 이동통신단말기의 내부부품을 보호할 수 있게 된다.According to the present invention, since the bracket for the interior material of the mobile communication terminal is made by a die casting method using aluminum alloy, magnesium alloy, etc., the weight is light and the internal parts of the mobile communication terminal can be protected. Will be.
또한, 이동통신단말기의 외장재용 브라켓이 아연 합금을 이용하여 이중 다이캐스팅 방법에 의해 만들어지기 때문에 도금, 증착, 도장 등을 이용하여 외관을 고급스럽게 할 수 있으며, 이동통신단말기의 내부에서 발생하는 열을 외부로 용이하게 방출할 수 있을 뿐만 아니라, 제조비용 및 제조시간을 단축시킬 수 있게 된다.In addition, since the bracket for the exterior material of the mobile communication terminal is made of a double die casting method using a zinc alloy, the appearance can be enhanced by plating, deposition, painting, etc., and heat generated inside the mobile communication terminal can be improved. Not only can be easily released to the outside, it is possible to reduce the manufacturing cost and manufacturing time.

Claims (10)

  1. 이동통신단말기용 브라켓(bracket)에 있어서,In the bracket for a mobile communication terminal,
    1차 다이캐스팅(die casting) 금형에 의해 성형되는 금속합금 재질의 내장판; 및A built-in plate made of a metal alloy material formed by a primary die casting mold; And
    상기 내장판을 2차 다이캐스팅 금형에 삽입한 후, 상기 내장판의 가장자리에 상기 내장판의 재질과 다른 재질의 금속합금을 2차 다이캐스팅하여 성형되는 외곽부;An outer portion formed by inserting the inner plate into the secondary die casting mold and then forming a secondary die cast metal alloy of a material different from that of the inner plate on the edge of the inner plate;
    를 포함하는 것을 특징으로 하는 이동통신단말기용 브라켓.Bracket for a mobile communication terminal comprising a.
  2. 제1항에 있어서,The method of claim 1,
    상기 내장판의 가장자리에 복수의 홀(hole) 또는 홈(groove)이 형성되며, A plurality of holes or grooves are formed at the edges of the interior plate,
    상기 외곽부는 상기 내장판에 형성되는 홀 또는 홈을 둘러싸며 상기 내장판의 측면을 감싸도록 성형되는 것을 특징으로 하는 이동통신단말기용 브라켓.The outer portion surrounds a hole or a groove formed in the inner plate and is molded to surround the side of the inner plate bracket for a mobile communication terminal.
  3. 제1항에 있어서,The method of claim 1,
    상기 내장판의 가장자리에 상측 및 하측 방향의 턱이 형성되며,The upper and lower jaws are formed at the edge of the inner plate,
    상기 외곽부는 상기 내장판에 형성되는 턱을 둘러싸며 상기 내장판의 측면을 감싸도록 성형되는 것을 특징으로 하는 이동통신단말기용 브라켓.The outer portion surrounds the jaw formed in the inner plate and is molded to surround the side of the inner plate bracket for a mobile communication terminal.
  4. 제1항에 있어서,The method of claim 1,
    상기 내장판은 알루미늄 합금 또는 마그네슘 합금으로 이루어지며, The interior plate is made of an aluminum alloy or magnesium alloy,
    상기 외곽부는 아연 합금으로 이루어지는 것을 특징으로 하는 이동통신단말기용 브라켓.The outer portion of the bracket for a mobile communication terminal, characterized in that made of zinc alloy.
  5. 제1항에 있어서,The method of claim 1,
    상기 내장판 및 상기 외곽부는 각각 다이캐스팅 후에 아노다이징(anodizing)을 수행하여 부식을 방지하며, 상기 외곽부는 다이캐스팅 후에 버핑 또는 CNC(Computer Numerical Control) 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감되는 것을 특징으로 하는 이동통신단말기용 브라켓.Each of the inner plate and the outer portion prevents corrosion by performing anodizing after die casting, and the outer portion is processed by buffing or CNC (Computer Numerical Control) after die casting, and then plated, coated, or deposited. Bracket for mobile communication terminal, characterized in that the finish.
  6. 이동통신단말기용 브라켓의 제조방법에 있어서,In the manufacturing method of the bracket for a mobile communication terminal,
    1차 다이캐스팅 금형에 의해 금속합금 재질의 내장판을 성형하는 단계; 및Molding a metal alloy embedded plate by a primary die casting mold; And
    상기 내장판을 2차 다이캐스팅 금형에 삽입한 후, 상기 내장판의 가장자리에 상기 내장판의 재질과 다른 재질의 금속합금으로 이루어진 외곽부를 2차 다이캐스팅하여 성형하는 단계;Inserting the inner plate into the secondary die casting mold, and then forming an outer edge of the inner plate by using a second die casting portion formed of a metal alloy of a material different from that of the inner plate;
    를 포함하는 것을 특징으로 하는 이동통신단말기용 브라켓의 제조방법.Method of manufacturing a bracket for a mobile communication terminal comprising a.
  7. 제6항에 있어서,The method of claim 6,
    상기 내장판의 가장자리에 복수의 홀 또는 홈을 형성하는 단계;Forming a plurality of holes or grooves at edges of the interior plate;
    를 더 포함하며,More,
    상기 외곽부는 상기 내장판에 형성되는 홀 또는 홈을 둘러싸며 상기 내장판의 측면을 감싸도록 성형하는 것을 특징으로 하는 이동통신단말기용 브라켓의 제조방법.The outer portion surrounds a hole or a groove formed in the inner plate and is molded to surround the side of the inner plate is a manufacturing method of a bracket for a mobile communication terminal.
  8. 제6항에 있어서,The method of claim 6,
    상기 내장판을 성형하는 단계는 가장자리에 상측 및 하측 방향의 턱이 형성되도록 상기 내장판을 형성하며,Forming the interior plate to form the interior plate so that the upper and lower jaw is formed on the edge,
    상기 외곽부를 성형하는 단계는 상기 내장판에 형성되는 턱을 둘러싸며 상기 내장판의 측면을 감싸도록 성형하는 것을 특징으로 하는 이동통신단말기용 브라켓의 제조방법.Forming the outer portion is a manufacturing method of the bracket for a mobile communication terminal, characterized in that the molding surrounding the side of the inner plate surrounding the jaw formed in the inner plate.
  9. 제6항에 있어서,The method of claim 6,
    상기 내장판은 알루미늄 합금 또는 마그네슘 합금으로 이루어지며, The interior plate is made of an aluminum alloy or magnesium alloy,
    상기 외곽부는 아연 합금으로 이루어지는 것을 특징으로 하는 이동통신단말기용 브라켓의 제조방법.The outer portion is a manufacturing method of a bracket for a mobile communication terminal, characterized in that made of zinc alloy.
  10. 제6항에 있어서,The method of claim 6,
    상기 내장판 및 상기 외곽부는 각각 다이캐스팅 후에 아노다이징을 수행하여 부식을 방지하며, 상기 외곽부는 다이캐스팅 후에 버핑 또는 CNC 작업을 이용하여 가공한 후 도금, 도장 또는 증착 공정을 통해 마감되는 것을 특징으로 하는 이동통신단말기용 브라켓의 제조방법.The inner plate and the outer portion are each anodized after die casting to prevent corrosion, and the outer portion is processed by buffing or CNC work after die casting and then finished by plating, painting or deposition process Method of manufacturing a terminal bracket.
PCT/KR2014/007386 2013-11-21 2014-08-08 Bracket for mobile communication terminal and manufacturing method therefor WO2015076479A1 (en)

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CN107498267A (en) * 2017-09-14 2017-12-22 东莞市琏柏五金制品有限公司 A kind of mobile phone center and its preparation technology
CN108856671A (en) * 2018-06-20 2018-11-23 Oppo广东移动通信有限公司 Center and its manufacturing method, mobile phone

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