WO2017221921A1 - 筐体及び筐体の製造方法 - Google Patents
筐体及び筐体の製造方法 Download PDFInfo
- Publication number
- WO2017221921A1 WO2017221921A1 PCT/JP2017/022644 JP2017022644W WO2017221921A1 WO 2017221921 A1 WO2017221921 A1 WO 2017221921A1 JP 2017022644 W JP2017022644 W JP 2017022644W WO 2017221921 A1 WO2017221921 A1 WO 2017221921A1
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- WIPO (PCT)
- Prior art keywords
- cover
- electronic device
- housing
- casing
- preform
- Prior art date
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- 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
- H05K5/02—Details
- H05K5/03—Covers
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- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0284—Details of three-dimensional rigid printed circuit boards
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- 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
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
-
- 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
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/185—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit
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- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0014—Shaping of the substrate, e.g. by moulding
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- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
-
- 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
- H05K5/02—Details
-
- 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
- H05K5/06—Hermetically-sealed casings
- H05K5/065—Hermetically-sealed casings sealed by encapsulation, e.g. waterproof resin forming an integral casing, injection moulding
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
- H05K7/06—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
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- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/0999—Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10037—Printed or non-printed battery
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10098—Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/06—Lamination
- H05K2203/063—Lamination of preperforated insulating layer
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
- H05K2203/1305—Moulding and encapsulation
Definitions
- the present invention relates to a housing for storing machines and electronic components.
- Patent Document 1 describes an invention of a circuit board in which a thin metal plate having a circuit pattern is integrated by insert molding with a synthetic resin.
- Patent Document 2 describes an invention of an electronic device casing that defines the arrangement position of a flexible substrate.
- a thin metal plate is covered with an insulating film or an insulating layer, and is integrally molded with a conductive resin. For this reason, although an effect may be expressed in the miniaturization and design optimization of an electronic component, it cannot be used as a large casing using a metal thin plate.
- a flexible printed circuit board is disposed as an electromagnetic wave shield structure on the inner surface side of the housing body. For this reason, even if the outside is damaged, the effect of maintaining the electromagnetic wave shield may be exhibited, but it is necessary to form bosses and ribs for arranging the flexible substrate, and satisfy the miniaturization and space saving. I can't.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a housing that has improved housing capacity while maintaining the rigidity required for the housing. is there.
- the present invention for solving the above-mentioned problems is as follows.
- a casing including a cover having an electronic device, wherein the electronic device is inserted into the cover.
- a method for manufacturing a casing which is constituted by a cover having an electronic device, and in which the electronic device is inserted into the cover, and at least one material selected from the group consisting of a prepreg, a film, and a nonwoven fabric, and A method for manufacturing a casing, comprising: a step of stacking an electronic device so that the electronic device is on the inside to obtain a preform; and a step of pressing and / or decompressing the preform to shape a shape.
- the housing according to the present invention can improve the storage capacity inside the housing while maintaining the rigidity required for the housing.
- FIG. 1 is a schematic cross-sectional view showing a housing of the present invention.
- FIG. 2 is a schematic cross-sectional view showing the housing of the present invention using a conductive material on the surface of the cover.
- FIG. 3 is a schematic cross-sectional view showing a housing of the present invention having a mechanism connectable to an electronic device.
- FIG. 4 is a schematic cross-sectional view showing a housing of the present invention in which a cover and other members are joined and integrated.
- FIG. 5 is a schematic cross-sectional view showing a preform used in Example 1 of the present invention.
- FIG. 6 is a schematic cross-sectional view showing a preform used in Example 2 of the present invention.
- FIG. 7 is a schematic diagram showing a state in which a circuit is directly printed on the prepreg used in Embodiment 3 of the present invention.
- the inventors of the present invention have inserted the electronic device into a cover that constitutes the housing, and compared with the case where the electronic device is not inserted into the cover. It has been found that the storage capacity inside the housing can be improved while maintaining the rigidity of the housing.
- the housing of the present invention conceived from the above knowledge will be described in detail with reference to the drawings.
- examples of the use of the casing of the present invention include casings for electrical / electronic devices, office automation devices, home appliances, medical devices, carry cases for transportation, etc. Among them, users carry and use them. It is preferably used for clamshell personal computers, tablet personal computers, mobile phones, and medical cassettes.
- the present invention is a housing composed of a cover having an electronic device, wherein the electronic device is inserted into the cover.
- the casing of the present invention will be described in detail.
- the electronic device is an element that performs active work such as amplification by applying the function of electrons, and includes a transistor and an electron tube. Furthermore, as an electronic device, an element including a passive element such as a resistor such as an IC (integrated circuit), a capacitor, an inductor, and a transformer can be used, and a CPU (Central Treatment Device) or AI (Artificial Intelligence) function can be used. It is also possible to use an electronic circuit, an antenna, a sensor, a printed board, or the like. In addition, relays and connectors for connecting them are also included in the electronic device. In the present invention, these electronic devices may be used alone or in combination of two or more.
- the thickness of these electronic devices is not particularly limited, but is preferably 1 mm or less, more preferably 0.5 mm or less, and still more preferably 0.3 mm or less. This makes it possible to reduce the thickness of the cover that constitutes the housing, and to satisfy the reduction in thickness and weight of the entire housing.
- the electronic device is “inserted into the cover” means that the electronic device is covered and sealed with the material constituting the cover, as shown in FIG. This means that the electronic device is present in a gap formed inside the material constituting the cover. At this time, it is preferable that at least the upper and lower sides of the electronic device are in contact with the material constituting the cover as shown in FIG. 1 (b), and the entire electronic device (surface) constitutes the cover as shown in FIG. 1 (c). More preferably, it is in contact with the material.
- 1C does not need to be placed outside the cover and inside the housing 5, and the space inside the housing is expanded. And the housing capacity of the housing is improved. Further, since the electronic device is inserted into the cover, water can be prevented from entering the electronic device, and a highly waterproof housing can be provided. Furthermore, since it is difficult to remove the electronic device, high security is also provided.
- the electronic device according to the present invention is preferably inserted at least in the flat portion of the cover as shown in FIG. With such an arrangement, the degree of design freedom can be increased.
- the plane portion is a smooth surface excluding bent portions such as corners of the housing.
- the position where the electronic device is inserted is not particularly limited, but it is preferable that the electronic device is disposed at a position close to the center of the thickness of the cover because the influence of deformation or impact caused by external force is small. .
- a surface direction it is preferable from the viewpoint of protection of an electronic device to arrange
- the cover in the present invention is one of the components of the housing.
- An aspect in which the housing is configured by only the cover is preferable from the viewpoint of improving productivity such as reduction of the molding process. Further, the aspect in which the housing is configured by combining the cover and other members is preferable from the viewpoint of increasing the degree of freedom in design such as the shape.
- the purpose of this cover and / or cover and other members is to fix and protect the electronic device by interpolating at the same time while forming a casing as shown in FIGS. Therefore, as a material constituting the cover, a thermosetting resin, a thermoplastic resin, a fiber reinforced resin obtained by adding a reinforced fiber to these resins, a metal, or the like can be used depending on the design purpose.
- a resin having a low specific gravity From the viewpoint of the light weight of the housing, it is preferable to use a resin having a low specific gravity, and from the viewpoint of high rigidity, it is preferable to use a fiber reinforced resin or a metal. These materials constituting the cover may be used alone or in combination of two or more.
- the material used for inserting these electronic devices into the cover is preferably in the form of a film or a nonwoven fabric from the viewpoint of easy material handling and easy preparation of a preform. Further, among the films, a prepreg obtained by impregnating a reinforcing fiber with a resin in advance is more preferable from the viewpoint of improving the mechanical properties of the cover.
- the cover of the present invention is a conductive material.
- a conductive material for at least a part of the cover, it is possible to impart electromagnetic shielding properties to the cover.
- the “conductive material” here means a material having a volume resistivity value of less than 1.0 ⁇ 10 ⁇ 2 ⁇ ⁇ cm. Examples of such conductive materials include fiber reinforced resins to which carbon fibers and metal fibers are added, metals, and the like.
- the position of the conductive material is not particularly limited. Therefore, for example, a conductive material may be selectively disposed at a position where it is desired to shield electromagnetic waves in the cover.
- a sandwich structure in which a conductive material is disposed on the surface of the cover as shown in FIG. To preferred.
- the conductive material is generally a material having high thermal conductivity, it is preferably disposed near an electronic device that requires heat dissipation or near a cooling fan.
- the cover of the present invention is a non-conductive material.
- a non-conductive material for at least a part of the cover, radio wave transmission can be imparted to the housing formed of the cover.
- the term “non-conductive material” as used herein means a material having a volume resistivity value of 1.0 ⁇ 10 ⁇ 2 ⁇ ⁇ cm or more. Examples of such non-conductive materials include fiber reinforced resins, resins, and ceramics to which glass fibers and aramid fibers are added.
- the position where the non-conductive material is disposed is not particularly limited. Therefore, for example, it is preferable to arrange the cover around the position where the antenna of the cover is inserted.
- the cover in the present invention preferably has a mechanism that can be connected to an electronic device as shown in FIG.
- the mechanism connectable to the electronic device may be provided on the side where the electronic components of the cover and the housing are arranged or on the opposite side.
- an electronic device such as a battery
- an external device such as an electronic device on the outside of the housing
- a means for obtaining a cover in which the electronic device is inserted is not particularly limited, but a method for press-molding or autoclave-molding a preform in which the electronic device is inserted, or an insert injection by placing the electronic device in a mold.
- a method of molding a method of curing a resin by applying resin to the electronic device and irradiating light of a specific wavelength, embedding the electronic device in a cover in which a groove for inserting the electronic device is formed, For example, a method of forming with a lid.
- the cover according to the present invention preferably has the standing wall portion of the cover and the flat portion of the cover made of the same material.
- “consisting of the same kind of material” as used herein means that the components occupying 50% by mass or more are the same among the components constituting the material used for each part.
- whether or not it is made of the same kind of material is determined by the identity of the structure characterizing the thermoplastic resin in the thermoplastic resin.
- a polyamide resin whether or not the resin having a repeating unit containing an amide bond accounts for 50% by mass or more of the component of the material used for each part of the cover standing wall part and the cover flat part. It is.
- a resin having a repeating unit containing an ester bond if a polyester resin, a resin having a repeating unit containing a carbonate bond if a polycarbonate resin, and a resin having a propylene repeating unit if a polypropylene resin are used. Judgment is made from the viewpoint of whether or not the standing wall portion and the flat portion of the cover occupy 50% by mass or more in the components constituting the material used for each portion.
- polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610, and polyamide 612 all correspond to the same kind of material as a resin having a repeating unit containing an amide bond, that is, a polyamide resin. Therefore, among the components constituting the standing wall portion of the cover, the component occupying 50% by mass or more is polyamide 6, and among the components constituting the flat portion of the cover, the component occupying 50% by mass or more is polyamide 66. In this aspect, it can be determined that the standing wall portion of the cover and the flat portion of the cover are made of the same material.
- both the standing wall portion of the cover and the flat surface portion of the cover have a structure in which the standing wall portion of the cover and the flat surface portion of the cover are determined depending on whether or not aluminum is contained in an amount of 50% by mass or more of the entire members. Judge whether or not they are made of the same kind of material. For example, A2017, A4043, A5052, A6063, A7075, and the like correspond to the same type of material (aluminum alloy).
- FIGS. 4 (a) and 4 (b) a housing in which a cover (planar portion) and another member (standing wall portion) are joined and integrated may be used, as shown in FIG. 4 (c).
- a housing in which a part of the flat portion and the standing wall portion is formed by a cover and is joined and integrated with other members may be used.
- FIG. 4 (c) A housing in which a part of the flat portion and the standing wall portion is formed by a cover and is joined and integrated with other members may be used.
- the casing in the present invention preferably has a space for arranging electronic components.
- it can be suitably used as a housing for electric / electronic devices, home appliances, medical devices, and the like on which electronic parts such as a display, a battery, and a cooling fan are mounted.
- it is preferably used for clamshell computers, tablet computers, mobile phones, and medical cassettes.
- the method of obtaining the housing is not particularly limited, and a method of inserting or outsert injection molding a cover in which an electronic device is inserted in a mold, a cover in which the electronic device is inserted, and Examples thereof include a method of press molding a preform made of another member.
- the housing of the present invention comprising a cover having an electronic device, wherein the electronic device is inserted into the cover, at least one material selected from the group consisting of a prepreg, a film, and a nonwoven fabric, and an electronic device, It can be manufactured by a manufacturing method having a manufacturing process including a step of obtaining a preform by laminating so that the electronic device is on the inside, and a step of shaping the shape by pressurizing and / or depressurizing the preform. it can. In this manner, the casing can be easily manufactured by previously stacking the electronic device inside the material used for the casing to obtain the preform.
- the position of the electronic device can be prevented from shifting when the preform is transported.
- casing obtained can be suppressed by pressurizing and / or decompressing a preform and shaping a shape.
- a conductive material is disposed on at least a part of the cover of the obtained casing, or a non-conductive material is disposed. be able to.
- a material 2 was obtained by impregnating the carbon fiber cloth with an epoxy resin in the same manner as in the material 1 except that a carbon fiber cloth having a basis weight of 198 g / m 2 made of carbon fiber was used.
- Example 1 As shown in FIG. 5, a preform 1 was obtained by laminating a material 1 and an electronic device having a thickness of 0.7 mm and a resistor having a thickness of 0.5 mm as an electronic device. The obtained preform 1 was placed in a mold whose temperature was adjusted to 50 ° C., and pressurization / heat press molding was performed. After 2 hours, the mold was opened, and the housing 1 was obtained.
- Example 2 As shown in FIG. 6, Preform 2 was obtained by laminating Material 1 and Material 2 and an IC chip having a thickness of 0.7 mm and a resistor having a thickness of 0.5 mm as an electronic device. A housing 2 was obtained in the same manner as in Example 1 except that the obtained preform 2 was used.
- Example 3 As shown in FIG. 7 (a), a prepreg having a circuit printed directly on the surface was prepared using a conductive paste and laminated as shown in FIG. 7 (b) to obtain a preform 3. Except this, the housing 3 was obtained in the same manner as in Example 1.
- Example 4 Using the preform 1 described in Example 1, a flat cover 4 as shown in FIG. Other members that become the standing wall are made of fiber reinforced pellets (Toray Industries, Ltd. “Treka” pellets TLP1060) and an injection molding machine with a matrix resin made of Ny6 resin and a carbon fiber content (Wf) of 30%. Using this, another member 4 was formed. The case 4 was obtained by joining the obtained cover 4 and the other member 4 using the adhesive.
- fiber reinforced pellets Toray Industries, Ltd. “Treka” pellets TLP1060
- Wf carbon fiber content
- the housing obtained in the embodiment does not need to form bosses or ribs for placing the electronic device which is a conventional technique, and it is not necessary to place the electronic device inside the housing.
- the entire space can be used for arranging electronic components and the like, and the housing has a high storage capacity.
- the cover and the casing are formed only from the glass fiber reinforced resin which is a nonconductive material, the radio wave transmission is excellent.
- the carbon fiber reinforced resin, which is a conductive material is disposed on the surface of the cover and the casing, a high shielding property was expressed against electromagnetic waves emitted from an electronic device inserted in the cover. It was a housing.
- the casing obtained in Example 3 was a casing that suppressed an increase in weight because a substrate necessary for manufacturing an electronic device was not used.
- the casing obtained in Example 4 is an injection in which other members having a complicated shape such as a standing wall are excellent in moldability by using only a flat portion having a simple shape as a cover in which an electronic device is inserted. By forming with a molding material, the casing has a high degree of design freedom.
- the present invention can be suitably used in a wide range of fields such as electric / electronic devices, office automation devices, home appliances, medical devices, carrying cases, and carrying cases.
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Abstract
Description
本発明における電子デバイスは、電子の働きを応用して、増幅などの能動的な仕事をする素子であり、トランジスタや電子管などがある。またさらに電子デバイスとしては、IC(集積回路)のような抵抗器やコンデンサ、インダクタおよびトランスなど受動素子を含んだ素子を用いることもでき、CPU(中央処置装置)やAI(人工知能)機能を有する電子回路、アンテナ、センサ、プリント基板などを用いることもできる。またこれらを接続するためのリレーやコネクタも電子デバイスに含まれる。本発明においては、これらの電子デバイスを単独または2種以上を併用しても良い。これらの電子デバイスの厚みについては、特に限定されないが、1mm以下の厚みであることが好ましく、0.5mm以下であることがより好ましく、さらに好ましくは0.3mm以下である。これにより、筐体を構成するカバーの厚みを薄くすることが可能となり、筐体全体の薄肉化および軽量化も満足することが可能となる。
本発明におけるカバーは、筐体の構成要素の1つである。カバーのみで筐体が構成される態様は、成形工程の削減などの生産性を向上させる観点から好ましい。また、カバーと他の部材を組み合わせて筐体が構成される様態は、形状などの設計自由度を高める観点から好ましい。このカバーおよび/またはカバーと他の部材を用いて、図1~4に示すような筐体を形作りながら、同時に電子デバイスを内挿することで固定し、保護することが目的である。そのため、カバーを構成する材料としては、設計目的に応じて熱硬化性樹脂や熱可塑性樹脂、これらの樹脂に強化繊維を添加した繊維強化樹脂、金属など用いることができる。筐体の軽量性の観点からは、比重の低い樹脂を用いることが好ましく、高剛性の観点からは繊維強化樹脂や金属などが用いられることが好ましい。カバーを構成するこれらの材料は、単独または2種以上を併用しても良い。
本発明における筐体は、電子部品を配置するための空間を有することが好ましい。このような形状とすることで、ディスプレイやバッテリー、冷却ファンなどの電子部品を搭載した電気・電子機器や家電機器、医療用機器などの筐体として好適に用いることができる。特に、クラムシェル型パソコンやタブレット型パソコン、携帯電話、医療用カセッテに好ましく用いられる。
本発明の、電子デバイスを有するカバーで構成され、前記電子デバイスがカバーに内挿された筐体は、プリプレグ、フィルム、及び不織布からなる群より選ばれる少なくとも1つの材料、並びに、電子デバイスを、電子デバイスが内側となるように積層してプリフォームを得る工程、及び、前記プリフォームを加圧および/または減圧して形状を賦型する工程を有する製造工程を有する製造方法により製造することができる。このように、あらかじめ電子デバイスを、筐体に用いる材料の内側に積層してプリフォームを得ることで、筐体を容易に製造することができる。好ましくは、形状を賦型する工程で用いる型を用いてプリフォームを作製することで、プリフォームを運搬した際に電子デバイスの位置がずれることを抑制することができる。またプリフォームを加圧および/または減圧して形状を賦型することで、得られる筐体に生じるボイド(微細な空隙)を抑制することができる。
[材料1]
ガラス繊維からなる目付け200g/m2のガラスクロス、および主剤と硬化剤とからなる2液型エポキシ樹脂を準備し、ガラス繊維の含有量が質量割合(Wf)で50%となるように、ガラスクロスにエポキシ樹脂を含浸させ材料1を得た。
炭素繊維からなる目付け198g/m2の炭素繊維クロスを用いること以外は材料1と同様にして、炭素繊維クロスにエポキシ樹脂を含浸させ材料2を得た。
図5に示すように材料1および電子デバイスとして厚み0.7mmのICチップと厚み0.5mmの抵抗器を積層してプリフォーム1を得た。得られたプリフォーム1を50℃に温度調整された金型内に配置し、加圧・加熱プレス成形した。2時間後、金型を開き、筐体1を得た。
図6に示すように材料1および材料2、電子デバイスとして厚み0.7mmのICチップと厚み0.5mmの抵抗器を積層してプリフォーム2を得た。得られたプリフォーム2を用いること以外は実施例1と同様にして筐体2を得た。
図7(a)に示すように導電ペーストを用い、表面に回路を直接プリントしたプリプレグを用意し、図7(b)のように積層してプリフォーム3を得た。これ以外は実施例1と同様にして筐体3を得た。
実施例1に記載のプリフォーム1を用い、図4(a)に示すような平面部のカバー4を成形した。立ち壁部となる他の部材は、マトリックス樹脂がNy6樹脂からなり、炭素繊維含有率(Wf)が30%の繊維強化ペレット(東レ(株)社製“トレカ”ペレットTLP1060)および射出成形機を用いて他の部材4を成形した。得られたカバー4および他の部材4を接着剤を用いて接合することで筐体4を得た。
2 カバー
3 電子デバイス
4 空隙部
5 筐体の内部
6 導電性材料
7 非導電性材料
8 電子デバイスと接続可能な機構
9 バッテリー
10 他の部材
11 材料1(ガラス繊維強化樹脂)
12 プリフォーム
13 材料2(炭素繊維強化樹脂)
14 サーキット(回路)
15 サーキット(回路)をプリントしたプリプレグ
Claims (8)
- 電子デバイスを有するカバーで構成される筐体であって、
前記電子デバイスは、カバーに内挿されていることを特徴とする筐体。 - 前記カバーは、少なくとも平面部を有し、
前記電子デバイスは、少なくともカバーの平面部に内挿されていることを特徴とする、請求項1に記載の筐体。 - 電子部品を配置するための空間を有することを特徴とする、請求項1又は2に記載の筐体。
- 前記カバーの少なくとも一部が、導電性材料であることを特徴とする、請求項1~3のいずれかに記載の筐体。
- 前記カバーの少なくとも一部が、非導電性材料であることを特徴とする、請求項1~3のいずれかに記載の筐体。
- 前記カバーが、電子デバイスと接続可能な機構を有することを特徴とする、請求項1~5のいずれかに記載の筐体。
- 前記カバーの立ち壁部が、前記カバーの平面部と同種の材料からなることを特徴とする請求項1~6のいずれかに記載の筐体。
- 電子デバイスを有するカバーで構成され、前記電子デバイスがカバーに内挿された筐体の製造方法であって、
プリプレグ、フィルム、及び不織布からなる群より選ばれる少なくとも1つの材料、並びに、電子デバイスを、電子デバイスが内側となるように積層してプリフォームを得る工程、及び、前記プリフォームを加圧および/または減圧して形状を賦型する工程を有する、筐体の製造方法。
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JP2017548306A JP7325930B2 (ja) | 2016-06-23 | 2017-06-20 | 筐体及び筐体の製造方法 |
CN201780035762.7A CN109315074B (zh) | 2016-06-23 | 2017-06-20 | 筐体及筐体的制造方法 |
KR1020187028673A KR20190019901A (ko) | 2016-06-23 | 2017-06-20 | 케이스 및 케이스의 제조 방법 |
EP17815389.6A EP3478040A4 (en) | 2016-06-23 | 2017-06-20 | HOUSING AND METHOD FOR PRODUCING A HOUSING |
US16/309,345 US11589472B2 (en) | 2016-06-23 | 2017-06-20 | Case having inner space within cover for electronic device |
SG11201810789WA SG11201810789WA (en) | 2016-06-23 | 2017-06-20 | Case and method for producing case |
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EP (1) | EP3478040A4 (ja) |
JP (1) | JP7325930B2 (ja) |
KR (1) | KR20190019901A (ja) |
CN (1) | CN109315074B (ja) |
SG (1) | SG11201810789WA (ja) |
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