WO2011001948A1 - 筐体用板状部材、筐体及びその製造方法 - Google Patents
筐体用板状部材、筐体及びその製造方法 Download PDFInfo
- Publication number
- WO2011001948A1 WO2011001948A1 PCT/JP2010/060997 JP2010060997W WO2011001948A1 WO 2011001948 A1 WO2011001948 A1 WO 2011001948A1 JP 2010060997 W JP2010060997 W JP 2010060997W WO 2011001948 A1 WO2011001948 A1 WO 2011001948A1
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- WIPO (PCT)
- Prior art keywords
- resin sheet
- wooden
- housing
- flame retardant
- resin
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- 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
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/05—5 or more layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1348—Cellular material derived from plant or animal source [e.g., wood, cotton, wool, leather, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249981—Plural void-containing components
Definitions
- the present invention relates to a case plate member, a case and an electronic apparatus having the case, and a method for manufacturing the case.
- a wooden member used as a surface exterior member is a member in which a defect (for example, a worm-eaten portion, a corroded portion, a crack, or other scratches) is exposed on the surface side during the exterior, for example, Many of the thinned wood is excluded. It is also necessary to avoid the occurrence of defects such as cracks or cracks in the wooden exterior during or after processing as a housing. If a defect occurs due to processing, even if it is a good quality wooden material at the beginning, it will lack commerciality as a housing.
- the case of the electronic device may be required to satisfy the fire resistance characteristic standard. Therefore, when applying a wooden material to such a casing, the casing itself is covered by an enclosure made of a flame retardant material such as a metal plate, or by applying or impregnating a flame retardant to the wooden material, for example. It may be necessary to flame retardant.
- FIGS. 1A to 1F are schematic cross-sectional views showing a method that can be used when forming a wooden processed material having a bent portion.
- the some wooden board (or wooden plywood) 11 is piled up via the adhesive agent 12, and is joined,
- the temporary stacked plywood 13 is formed.
- the temporary stacked plywood 13 is placed in a steam atmosphere 14 and is softened.
- thinned wood that often includes portions with different density and / or brittleness such as nodes.
- the temporary stacking plywood 13 that has been softened is inserted between dedicated press dies 15 (female mold 15-1 and male mold 15-2) as shown in FIG. 1B, and bent as shown in FIG. 1C. It is molded into a pressed product 16 having a portion.
- the press die 15 is released, and a press-work product 16 made of a wooden plywood as shown in FIG. 1D is taken out. Then, by chamfering the press-processed product 16, a chamfered product 18 as shown in FIG. 1E is obtained. Thereafter, as shown in FIG. 1F, the flame-treated wood processed material 19 having a bent portion is obtained by impregnating the chamfered processed product 18 with a flame retardant.
- An object of the disclosed technology is to provide a plate-like member having a wooden material, a casing, and an electronic apparatus having the same, which can improve the yield at the time of pressure molding.
- a plate-like member that can be used for a housing.
- a plurality of wooden plates and a plurality of porous resin sheets each having a plurality of holes are laminated.
- a housing having a laminated wooden board and a resin sheet is provided.
- the wooden plate has a bent portion
- the resin sheet has a plurality of hollow holes arranged at positions corresponding to the bent portion of the wooden plate.
- a method for manufacturing a housing includes a step of laminating a wooden plate and a resin sheet having a plurality of hollow holes, and a step of pressure-molding the laminated wooden plate and the resin sheet so as to form a bent portion.
- the plurality of hollow holes of the resin sheet are disposed at positions corresponding to at least the bent portion.
- the stress that can be concentrated on the bent portion of the wooden board during pressure molding is alleviated by the deformation of the hollow hole of the resin sheet, so that the manufacturing yield of the casing and the electronic device having the wooden material can be improved.
- the processed material 100 can be used, for example, as a casing of various electronic devices.
- the electronic device may be, for example, a calculator, a mobile phone, a PDA, or a PC.
- description will be given assuming that the workpiece 100 is a casing of some electronic device.
- the housing 100 includes a wood part 110 and a resin part 120 joined to one surface (a surface opposite to the exterior surface) of the wood part 110 as shown in the cross-sectional view of FIG.
- the wood part 110 and the resin part 120 can be joined via an adhesive 130 such as a starch-based thermosetting adhesive, for example.
- the wood part 110 includes one or a plurality of wooden plates 111
- the resin part 120 includes one or a plurality of resin sheets 121.
- the wood part 110 includes two wooden boards 101
- the resin part 120 includes three resin sheets 121.
- the plurality of wooden boards 111 can be joined to each other via an adhesive 112.
- the plurality of resin sheets 121 may be directly bonded as illustrated or may be bonded via an adhesive depending on the tackiness or the like.
- Each wooden board 111 has a thickness in the range of 100 to 700 ⁇ m from the viewpoint of workability by press molding, although it depends on the type of wood used and the thickness required for the casing 100.
- Each wooden board 111 can be made of cedar with a thickness of 200 ⁇ m or 500 ⁇ m, for example.
- Each resin sheet 121 can be, for example, an ABS resin (acrylic / butadiene / styrene copolymer synthetic resin) sheet, and the thickness thereof can be, for example, about 200 ⁇ m.
- ABS resin acrylic / butadiene / styrene copolymer synthetic resin
- a porous resin sheet using a material such as PP (polypropylene), PS (polystyrene), PE (polyethylene), PVC (polyvinyl chloride), or PMMA (polymethyl methacrylate) may be used.
- Each resin sheet 121 has a plurality of bubble-shaped hollow holes 121a formed therein (hereinafter, the resin sheet 121 is also referred to as a porous resin sheet).
- the hollow hole 121a of each resin sheet 121 may or may not penetrate through the resin sheet 121.
- each hollow hole 121a extends to one surface of the resin sheet 121 to allow coating of the inner wall of each hollow hole 121a, as shown in an enlarged view in FIG.
- An opening 121b is formed on the surface.
- the resin sheet which has an opening in the surface in this way is marketed as a honeycomb film from the Fuji film company, for example.
- Each hollow hole 121a can be formed to have, for example, a hole diameter of about 80 ⁇ m and a pitch of about 100 ⁇ m.
- the housing 100 has a bent portion 100A formed by press molding.
- stress tends to concentrate on the bent portion.
- the resin portion 120 including the porous resin sheet 121 is contracted or deformed in the bent portion 100A by the hollow hole 121a. Stress can be dispersed.
- the wooden board 111 includes a portion having a different material locally, such as a high-density brittle portion such as a node, such a portion is similarly formed by the resin portion 120 including the porous resin sheet 121. It is possible to suppress the occurrence of cracks and distortions.
- the stress dispersion effect due to the contraction or deformation of the hollow hole 121a can be maintained even after the housing 100 is assembled to an electronic device or the like.
- each resin sheet preferably has a flame retardant 122 and / or a release agent 123 on its inner wall.
- the flame retardant 122 and / or the release agent 123 can be formed, for example, by impregnation or application, as will be described later.
- the flame retardant 122 acts as a flame retardant film or a flame retardant layer, and provides fire resistance to the resin sheet 121 and thus the casing 100. Therefore, the resin sheet 121 formed integrally with the housing 100 functions as a heat countermeasure component of the heating element existing inside the electronic device using the housing 100 due to the fire resistance of the flame retardant 122, and the like. Separate components can be eliminated.
- the flame retardant 122 for example, a phosphorus-based flame retardant can be used. It should be noted that a flame retardant may be impregnated or coated on the wooden board 111 of the wood portion in accordance with fire resistance characteristic standards required for an electronic device or the like using the housing 100.
- the release agent 123 acts as an adhesion prevention film between inner walls or an adhesion prevention layer between inner walls, and prevents the resin sheet 121 from being locally depressed due to undesired adhesion between the inner walls of the crushed hollow holes 121a. Therefore, for example, even if excessive deformation occurs in the hollow hole 121a in the bent portion 100A temporarily, the resin sheet 121 can recover its shape and improve the flatness of the molded shape.
- Teflon registered trademark
- the casing 100 is configured as a composite material in which the wood part 110 and the resin part 120 are laminated.
- the wood part 110 can be made thin and flexible as compared with a case where the strength required for the housing 100 is realized only by a wooden material. Therefore, bending deformation is possible in a stress range that does not lead to shear stress, and further, stress distribution is performed by the resin portion 120, so that the bending portion 100A and the wood portion 110 are locally broken and / or broken. Generation of distortion is suppressed. Thus, the manufacturing yield of the housing 100 is improved.
- the flame resistance 122 formed on the inner wall of the hollow hole 121a included in the resin portion 120 can provide the casing 100 itself with the fire resistance required for the electronic device. Furthermore, the housing
- casing 100 has the outstanding lightweight property because each resin sheet 121 of a resin part has many hollow holes 121a.
- a wooden board 111 and a porous resin sheet 121 having a large number of hollow holes 121a as shown in the perspective view of FIG. 4A are prepared.
- the hollow hole 121a is in a semi-bubble state, that is, it is in an open state so as to form an opening 121b on the upper surface side of the resin sheet 121, and is closed on the lower surface side.
- a film of the flame retardant 122 and / or the release agent 123 is formed on the inner wall of the hollow hole 121a.
- Each of the flame retardant 122 and / or the release agent 123 can be formed by, for example, impregnation by dipping using a dipping device or application using a screen printing device.
- the flame retardant 122 and the peeling agent 123 are abbreviate
- the wooden plate laminated flat plate 110 ′ includes two wooden plates 111, and the resin sheet laminated flat plate 120 ′ includes three porous resin sheets 121.
- an adhesive 112 is inserted so as to be sandwiched between the wooden boards 111, and an adhesive 124 is inserted so as to be sandwiched between the resin sheets 121.
- the uppermost wooden board 111 corresponds to a decorative board on the exterior of the casing 100.
- the wooden board 111 may be impregnated or coated with a flame retardant prior to the lamination to the temporarily stacked laminated flat plate 100 ′ as necessary.
- a pair of press molds 150 (female mold 150-1 and male mold 150-2) manufactured so as to obtain a desired housing shape are temporarily placed.
- Stacked flat plate 100 ' is set.
- a step of softening the temporarily stacked flat plate 100 ′ is performed, for example, by steam treatment for 10 seconds in water vapor.
- the wooden plate laminated flat plate 110 ′ is arranged on the female die 150-1 side
- the resin sheet laminated flat plate 120 ′ is arranged on the male die 150-2 side. It can be appropriately changed depending on whether the exterior surface of the housing to be manufactured is convex or concave.
- the temporarily stacked laminated flat plate 100 ′ is press-molded by the molds 150-1 and 150-2.
- the pressing conditions can depend on the wood type and / or thickness of the wooden board 111.
- the mold temperature is set so that the wooden plate laminated flat plate 110 ′ side is 130 ° C. and the resin sheet laminated flat plate 120 ′ side is 90 ° C., and the molding pressure is 9 MPa, the pressing time is 1 second / the opening time is 3 seconds. Press conditions with a total pressurization time of 5 minutes may be used.
- the stress distribution by the resin portion 120 having the hollow hole 121a suppresses the generation of cracks and distortion even in the bent portion 100A where stress is likely to concentrate. Further, when the wood part 110 has a plurality of wooden boards 111, stress is caused by sliding movement between the plurality of wooden boards 111 in the bent part 100A as compared with the case where one relatively thick wooden board is used. The dispersion effect and the processing accuracy of the curvature can be increased.
- the casing 100 is completed through mold release and chamfering (see FIGS. 1D and 1E).
- the processed material 200 can be, for example, a housing such as an electronic device.
- the housing 200 includes elements common to the housing 100 according to the first embodiment, and here, common elements are denoted by similar reference numerals and will not be described in detail.
- the housing 200 includes a wood part 210 and a resin part 220 bonded to one surface (a surface opposite to the exterior surface) of the wood part 210 via an adhesive 230.
- the wood part 210 includes one or a plurality of wooden plates 211
- the resin part 220 includes one or a plurality of resin sheets 221.
- the plurality of wooden plates 211 can be joined to each other via an adhesive 212.
- the plurality of resin sheets 221 may be directly joined as illustrated, or may be joined via an adhesive.
- the housing 200 has a bent part 200A and a flat part 200B formed by press molding.
- the resin part 220 includes a part 220A corresponding to the bent part 200A of the casing and a part 220B corresponding to the flat part 200B of the casing.
- Each resin sheet 221 has a plurality of bubble-shaped hollow holes 221a formed therein (hereinafter, the resin sheet 221 is also referred to as a porous resin sheet).
- Each hollow hole 221a may be formed to have a hole diameter of about 80 ⁇ m and a pitch of about 100 ⁇ m, for example.
- two hollow holes 221a located at the boundary between the bent portion 220A and the flat portion 220B of the resin portion are shown in an enlarged manner.
- the hollow hole 221 a of each resin sheet 221 extends to at least one surface of the resin sheet 221, and forms an opening 221 b on at least one surface of the resin sheet 221.
- Each hollow hole 221a may have a flame retardant 222 and / or a release agent 223 on the inner wall, similarly to the hollow hole 121a of the first embodiment.
- the hollow hole 221a of the flat part 220B is filled with a flame retardant filler 225.
- the hollow hole 221a of the bent portion 220A is not filled and is left hollow.
- the filler 225 preferably contains a lightweight filler 225a such as glass or an inorganic material so as to have light weight in addition to flame retardancy.
- a resin containing a hollow glass filler 225a in a resin 225b can be used as the filler 225.
- the hollow glass filler is excellent in terms of lightness, heat insulation, thermal dimensional stability and the like, and is widely used as an additive in various resin coatings.
- a resin 225 containing a hollow glass filler is a resin 225b (PVA resin 5 wt%, IPA 85 wt%) added with a spherical hollow glass filler 225 a (3M Glass Bubbles S60HS, particle size 27 ⁇ m, 10 Wt%). It is.
- the hollow glass filler-containing resin 225 is fired after filling.
- an inorganic material such as a porous carbon material or a porous ceramic (alumina, silica, mullite), a porous resin in which bubbles are contained in advance, or the like may be used.
- the following further effects can be obtained by making the structure of the resin part 220 different between the bent part 200A and the flat part 200B.
- the hole 221a of the resin portion 220A remains hollow, so that it freely deforms according to the degree of bending and releases the stress.
- the bent portion 200A has excellent characteristics in flexible deformation and stress reduction due to the deformation. Therefore, as in the first embodiment, the occurrence of cracks at the bent portion and the occurrence of deformation and warping after press molding can be suppressed.
- a filler 225 such as a resin containing a hollow glass filler in the hole 221a of the resin part 220B acts as a strength reinforcing material, and a certain shape retention effect is obtained. That is, the flat portion 200B has excellent characteristics in rigidity and deformation resistance based thereon. Therefore, the flatness of the flat part 200 ⁇ / b> B is ensured for a long period after press molding, and a casing having a wood grain decorative plate that is more excellent in aesthetics can be obtained. In addition or alternatively, it may be possible to reduce the thickness of the resin part 220 and thus the casing 200 while ensuring a desired strength.
- the flame retardant filler 225 provides the casing 200 itself with the fire resistance required for the electronic device by the filler 225 and the flame retardant impregnated in the flame retardant film 222 and / or the wood part 210. You can have it.
- all the holes 221a in the bent portion 220A are left hollow, and all the holes 221a in the flat portion 220B are drawn as if they were filled with the filler 225.
- the form is not limited to the illustrated form.
- a part of the holes 221a in the bent portion 220A may be filled with a filler.
- a part of the holes 221a in the flat portion 220B may be left hollow.
- holes having a filler and hollow holes may be dispersed in the same resin sheet 221 in the bent portion 220A.
- holes are filled with a filler in the inner layer side resin sheet near the heating element of the electronic device, and holes are left hollow in the outer layer side resin sheet near the wood part 210. Can be.
- a wooden board 211 and a porous resin sheet 221 ′ having a number of hollow holes 221a as shown in the perspective view of FIG. 6A are prepared.
- the hollow hole 221a of the porous resin sheet only needs to be in an open state on at least one side of the sheet, and may be in a closed state (semi-bubble state) or an open state on the other side.
- the hollow hole 221a is in a semi-bubble state, that is, an open state is formed so as to form an opening 221b on the upper surface side of the resin sheet 221 ′, and a closed state is formed on the lower surface side.
- the inner wall of the hollow hole 221a may be impregnated or coated with a flame retardant and / or a release agent.
- a filler paste 225 containing a hollow glass filler 225a as shown in FIG. 6B is prepared.
- a screen mask 240 having a predetermined pattern is set on the porous resin sheet 221 ′, and the filler paste 225 is screen-printed using the squeegee 241. .
- the hollow hole 221a located under the mask portion 240a of the screen mask 240 is not filled with the filler paste 225 and remains in a hollow state.
- the hollow paste 221a located under the opening (mesh portion) 240b of the screen mask 240 is selectively filled with the filler paste 225 through the opening 221b of the resin sheet 221 ′.
- the pattern of the screen mask 240 is designed such that the mask portion 240a corresponds to the resin sheet portion 221A that will later constitute the bent portion 220A, and the mesh portion 240b later corresponds to the resin sheet portion 221B that constitutes the flat portion 220B.
- the wooden plate laminated flat plate 210 ′ includes two wooden plates 211
- the resin sheet laminated flat plate 220 ′ includes three filler introduced porous resin sheets 221.
- an adhesive 212 is inserted so as to be sandwiched between the wooden boards 211.
- An adhesive may be inserted so as to be sandwiched between the filler-introduced resin sheets 221.
- the filler-introduced temporarily stacked laminated plate 200 ′ is formed.
- the uppermost wooden board 211 corresponds to the decorative board on the exterior of the housing 200.
- the wooden board 211 may be impregnated or coated with a flame retardant prior to the lamination to the temporarily stacked laminated flat plate 200 ′ as necessary.
- FIG. 6G shows an enlarged cross-sectional view of region C of the filler-introduced temporarily stacked laminated plate 200 ′ shown in FIG. 6F.
- three filler-introduced porous resin sheets 221 are filled with a filler 225 containing a hollow glass filler in the same pattern.
- the filler non-introducing portions 221A of the respective filler-introduced porous resin sheets are aligned and laminated to constitute a filler non-introducing portion 220A ′ (corresponding to the bent portion 220A of the resin portion 220) of the resin sheet laminated flat plate 220 ′.
- filler introduction portions 221B of each filler-introduced porous resin sheet are aligned and laminated to constitute a filler introduction portion 220B ′ (corresponding to the flat portion 220B of the resin portion 220) of the resin sheet laminated flat plate 220 ′.
- a pair of press molds 250 (female mold 250-1 and male mold 250-2) manufactured so as to obtain a desired housing shape is filled with filler.
- Introduced temporary stacked laminated flat plate 200 ' is set.
- the filler-introduced temporary stacked flat plate 200 ′ is aligned so that the filler non-introducing portion 220A ′ and the filler introducing portion 220B ′ are opposed to the bent portion molding region and the flat portion molding region of the mold 250, respectively. Arranged.
- a softening step of the filler-introduced temporarily stacked flat plate 200 ′ is performed by, for example, steaming for 10 seconds in water vapor.
- the temporarily stacked laminated flat plates 200 ′ are press-molded by the molds 250-1 and 250-2.
- the bent part 200A and the flat part 200B are molded.
- the pressing conditions can be the same as in the first embodiment.
- the mold temperature is set so that the wooden plate laminated flat plate 210 ′ side is 130 ° C. and the resin sheet laminated flat plate 220 ′ side is 90 ° C.
- the molding pressure is 9 MPa
- the pressing time is 1 second / the opening time is 3 seconds. Press conditions with a total pressurization time of 5 minutes may be used.
- the resin portion 220A of the bent portion 200A has the hollow hole 221a, the occurrence of cracking and distortion is suppressed even in the bent portion 200A where stress is easily concentrated due to the stress dispersion effect. Moreover, the shape stability of the flat portion can be ensured by filling the hole 221a of the resin portion 220B of the flat portion 200B with the filler paste 225.
- the casing 200 is completed through mold release and chamfering (see FIGS. 1D and 1E).
- the processed material 300 can be, for example, a housing such as an electronic device.
- the casing 300 includes elements common to the casings 100 and 200 according to the first and second embodiments. Here, the common elements are denoted by the same reference numerals and will not be described in detail. To do.
- the housing 300 includes a wood part 310 and a resin part 320 joined to one surface (a surface opposite to the exterior surface) of the wood part 310 via an adhesive 330.
- the wood part 310 includes one or a plurality of wooden plates 311
- the resin part 320 includes one or a plurality of resin sheets 321.
- the plurality of wooden boards 311 can be joined to each other via an adhesive 312.
- the plurality of resin sheets 321 may be directly joined as illustrated or may be joined via an adhesive.
- the housing 300 has a bent portion 300A and a flat portion 300B formed by press molding.
- the resin part 320 includes a part 320A corresponding to the bent part 300A of the casing and a part 320B corresponding to the flat part 300B of the casing.
- each resin sheet 321 has a plurality of bubble-shaped hollow holes 321a formed therein.
- Each hollow hole 321a can have the same shape as each hollow hole 121a of the housing 100, and can be formed to have, for example, a hole diameter of about 80 ⁇ m and a pitch of about 100 ⁇ m.
- each hollow hole 321a may have a flame retardant and / or a release agent on the inner wall, similarly to the hollow hole 121a.
- the hollow portion 321a is not formed in each resin sheet 321 in the flat portion 320B.
- the following further effects can be obtained by making the structure of the resin part 320 different between the bent part 300A and the flat part 300B.
- the hollow hole 321a of the resin portion 320A is freely deformed according to the degree of bending to release the stress. Therefore, as in the first and second embodiments, the occurrence of cracks at the bent portion and the occurrence of deformation and warping after press molding can be suppressed.
- the shape stability is enhanced by the resin part 320B that does not have the hollow hole 321a.
- the flatness of the flat part 300B is ensured during the press molding and for a long period thereafter, and a casing having a wood grain decorative plate that is more excellent in aesthetics can be obtained.
- the flat part 320B of the resin part does not have the hollow hole 321a
- this embodiment is not limited to the illustrated form.
- the flat part 320B may have a hollow hole with a smaller diameter than the hollow hole 321a in the bent part 320A and / or a hollow hole with a low density.
- hollow holes may be formed only in some of the resin sheets 321.
- the fire resistance of the flat part 300B of the housing can be provided or enhanced.
- a water repellent sheet 360 is prepared.
- exposure and hydrophilic treatment are performed using a mask 361.
- the mask 361 has a mask portion 361 a formed in a pattern corresponding to the bent portion of the housing 300.
- the water repellent sheet region 360A masked by the mask portion 361a still has water repellency, while the water repellent sheet region 360B not covered by the mask portion 361a is changed to hydrophilic.
- a water droplet film 362 is formed by water vapor spraying. Since formation of water droplets is suppressed on the hydrophilic region 360B, a water droplet film 362 having a plurality of regularly arranged water droplets is selectively formed on the water repellent region 360A. Then, as shown in FIG. 8D, a resin is applied on the water-repellent sheet 360 on which the water droplet film 362 is formed to form a resin sheet 321. In the resin sheet 321, a hollow hole 321 a having a regular pattern according to the water droplet pattern of the water droplet film 362 is formed.
- the resin sheet 321 partially having the hollow hole 321a may be manufactured using other methods.
- a flame-retardant resin sheet in which the generation of bubbles is locally controlled by irradiating a resin sheet (for example, Softlon manufactured by Sekisui Chemical Co., Ltd.) impregnated with a flame retardant and foaming agent in a desired pattern. can be obtained.
- the housing 300 can be manufactured using the method shown in FIGS. 4A to 4E in relation to the housing 100 according to the first embodiment.
- the resin sheet 321 instead of the resin sheet 121
- the region where the hollow hole 321a of the resin sheet 321 is formed is opposed to the bent portion molding region of the mold 150. Aligned.
- casing 100 for convenience of description.
- FIG. 9 shows an example in which the casing 100 is applied to the notebook PC 400, and has a wood grain decorative board in the upper lid casing portion including the top board.
- the notebook PC 400 may have a wood grain decorative plate made of the housing 100 in another portion such as a lower lid housing.
- FIG. 10 is an example in which the case 100 is applied to the mobile phone 500, and almost all parts of the outer shape excluding the display display and the operation buttons can be constituted by the case 100.
- the operation buttons may also be configured as a wooden part having the housing 100.
- FIG. 11 is an example in which the housing 100 is applied to a display device 600 such as a monitor or a television receiver, and almost all parts of the outer shape excluding the display screen 601 can be configured by the housing 100.
- a display device 600 such as a monitor or a television receiver
Abstract
Description
100'、200' 仮積み積層平板
100A、200A、300A 筐体の屈曲部
200B、300B 筐体の平坦部
110、210、310 木材部
110'、210' 木製板積層平板
111、211、311 木製板
112、212、312 接着剤
120、220、320 樹脂部
120'、220' 樹脂シート積層平板
220A、320A 樹脂部の屈曲部
220B、320B 樹脂部の平坦部
121、221、321 樹脂シート
121a、221a、321a 孔(中空孔)
122、222 難燃剤(難燃性膜)
123、223 剥離剤(内壁間密着防止膜)
130、230、330 接着剤
150、250 プレス金型
225 フィラー入り充填材
225a 中空ガラスフィラー
225b 樹脂
240 スクリーンマスク
241 スキージ
360 発泡シート
362 水滴膜
400、500、600 電子機器
図3を参照して、第1実施形態に係る板状部材及びそれをプレス成型した加工材100を説明する。加工材100は、例えば、種々の電子機器の筐体として使用することができる。電子機器は、例えば電卓、携帯電話、PDA又はPCなどとし得る。以下、加工材100は何らかの電子機器の筐体であるとして説明する。
図5を参照して、第2実施形態に係る板状部材及びそれをプレス成型した加工材200を説明する。加工材200は、例えば、電子機器などの筐体とし得る。筐体200は第1実施形態に係る筐体100と共通の要素を含んでおり、ここでは、共通の要素については類似の参照符号を付し、詳細に説明しないこととする。
図7を参照して、第3実施形態に係る板状部材及びそれをプレス成型した加工材300を説明する。加工材300は、例えば、電子機器などの筐体とし得る。筐体300は第1及び第2の実施形態に係る筐体100及び200と共通の要素を含んでおり、ここでは、共通の要素については類似の参照符号を付し、詳細に説明しないこととする。
Claims (20)
- 複数枚の木製板と、複数の孔を夫々有する複数の多孔樹脂シートとが積層されたことを特徴とする電子機器筐体用板状部材。
- 前記多孔樹脂シートは、筐体屈曲部形成領域と筐体平坦部形成領域とを有することを特徴とする請求項1に記載の電子機器筐体用板状部材。
- 少なくとも前記筐体平坦部形成領域における前記複数の孔は、軽量かつ難燃性の充填材料が充填されていることを特徴とする請求項1又は2に記載の電子機器筐体用板状部材。
- 前記複数の孔の内壁に、難燃性膜ないし難燃化層が形成されていることを特徴とする請求項1乃至3の何れか一項に記載の電子機器筐体用板状部材。
- 前記複数の孔の内壁に、内壁間密着防止膜ないし内壁間密着防止層が形成されていることを特徴とする請求項1乃至4の何れか一項に記載の電子機器筐体用板状部材。
- 請求項1記載の電子機器筐体用板状部材を用いたことを特徴とする電子機器筐体。
- 請求項1記載の電子機器筐体用板状部材を用いたことを特徴とする電子機器。
- 屈曲部を有する木製板と、
前記木製板に積層され、前記屈曲部に対応する位置に複数の中空孔が配置された樹脂シートと、
を有することを特徴とする筐体。 - 前記複数の中空孔の内壁に難燃性膜が形成されていることを特徴とする請求項8に記載の筐体。
- 前記複数の中空孔の内壁に内壁間密着防止膜が形成されていることを特徴とする請求項8又は9に記載の筐体。
- 前記木製板は更に平坦部を有し、
前記樹脂シートは更に、前記平坦部に対応する位置に配置された複数の中空孔を有する、
ことを特徴とする請求項8に記載の筐体。 - 前記木製板は更に平坦部を有し、
前記樹脂シートは更に、前記平坦部に対応する位置に配置され且つ難燃性フィラーを導入された複数の孔を有する、
ことを特徴とする請求項8に記載の筐体。 - 前記木製板は更に平坦部を有し、
前記樹脂シートは更に、前記平坦部に対応する位置に配置された、前記屈曲部に対応する位置の前記複数の中空孔より孔径の小さい複数の中空孔を有する、
ことを特徴とする請求項8に記載の筐体。 - 外装の少なくとも一部に請求項8に記載の筐体を有する電子機器。
- 木製板と、複数の中空孔を有する樹脂シートとを積層する工程と、
積層された前記木製板及び前記樹脂シートを、屈曲部を形成するように加圧成型する工程と、
を有し、前記樹脂シートの前記複数の中空孔は、少なくとも前記屈曲部に対応する位置に配置される、
ことを特徴とする筐体の製造方法。 - 前記積層する工程に先立って、前記樹脂シートの前記複数の中空孔の内壁に難燃性膜を形成する工程、を更に有することを特徴とする請求項15に記載の筐体の製造方法。
- 前記積層する工程に先立って、前記樹脂シートの前記複数の中空孔の内壁に内壁間密着防止膜を形成する工程、を更に有することを特徴とする請求項16に記載の筐体の製造方法。
- 前記加圧成型する工程は前記屈曲部とともに平坦部を形成し、
当該製造方法は更に、前記積層する工程に先立って、前記平坦部に対応する位置に配置された前記複数の中空孔に難燃性フィラーを導入する工程を有する、
ことを特徴とする請求項15に記載の筐体の製造方法。 - 前記積層する工程は複数枚の木製板を互いに隣接させて積層することを含む、ことを特徴とする請求項15に記載の筐体の製造方法。
- 前記積層する工程に先立って、前記木製板に難燃剤を含浸あるいは塗布する工程、を更に有することを特徴とする請求項15に記載の筐体の製造方法。
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JP2011520916A JP5062367B2 (ja) | 2009-07-02 | 2010-06-28 | 筐体用板状部材、筐体及びその製造方法 |
US13/335,050 US9095050B2 (en) | 2009-07-02 | 2011-12-22 | Plate member for housing, housing, and method of fabricating the same |
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US9095050B2 (en) | 2015-07-28 |
US20120118629A1 (en) | 2012-05-17 |
CN102474994A (zh) | 2012-05-23 |
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JPWO2011001948A1 (ja) | 2012-12-13 |
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