JP2005317942A - Electrical/electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member or an enclosure, which is superior in weight reduction and wall thickness and increase in stiffness, of electrical/electronic equipment having at least one mechanism selected from among a display mechanism, a printing mechanism, an audio mechanism, and a photographic mechanism. <P>SOLUTION: Electrical/electronic equipment comprises at least one mechanism selected from among a display mechanism, a printing mechanism, an audio mechanism, and a photographic mechanism. At least a portion of a member or an enclosure, which secures components related to the mechanism, contains fiber-reinforced resin which is reinforced with continuously reinforced fiber. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric / electronic device including at least one mechanical component selected from the group consisting of a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism, and a member or a casing for fixing the component related to the mechanism The present invention relates to an electric / electronic device including a fiber reinforced resin reinforced with a continuous reinforcing fiber at least in part.

  In recent years, electrical and electronic devices continue to make rapid progress as society becomes more sophisticated. In the past, electrical and electronic equipment with advanced functions could only be used in limited environments such as large commercial and industrial facilities due to economics and complexity of handling. However, at present, due to the advancement of technology, easy handling and low price are realized, and the spread to general households is expanding.

  For molding materials used for members and casings of electrical and electronic equipment, moldability, productivity, and economy have traditionally been regarded as important, but with the spread to general households, in addition to these, lightweight In addition to satisfying the properties and high rigidity, characteristics such as exhibiting thin wall properties have been demanded. In order to meet these sophisticated demands, although the internal mechanism of electrical and electronic equipment, as well as the technology used retroactively to the materials used for members and casings of electrical and electronic equipment, Conventionally, metal materials and resin materials that have been mainly used in the field cannot achieve a balance between rigidity and light weight, and as a result, cannot satisfy the above-described sophisticated requirements.

  Under such circumstances, for example, regarding electric and electronic devices equipped with a display mechanism, in addition to conventional television displays, they are becoming increasingly popular as computer display devices, portable display devices, and the like. The market demand for larger and thinner John displays is increasing. Recently, the spread of plasma displays, liquid crystal displays, and the like has been promoted as displays that can be made large and thin, and space-saving displays and wall-mounting are being promoted. For this reason, for example, with respect to wall mounting, the weight increase due to the increase in the size of the television display cannot be balanced with the strength of the wall surface on which the device display is installed, and as a result, the display is installed on the wall surface. As a result, it is impossible to take advantage of the increase in size and thickness of the display obtained by technological advancement. In view of these circumstances, in an electric / electronic device equipped with a display mechanism, a member, a housing, and the like for fixing a component related to the mechanism are required to be reduced in weight, thickness, rigidity, and the like.

  Furthermore, with the widespread use of these displays, home theaters have become popular in ordinary households.Furthermore, coupled with the ripple effects of large and complex movie theaters in recent years, electrical and electronic devices equipped with an acoustic mechanism such as speakers, etc. Lightness and thinness are required as in the case of electrical / electronic devices having a display mechanism. As a result, in the electrical and electronic equipment equipped with an acoustic mechanism, it is marketed that members and casings for fixing the parts related to the mechanism have characteristics such as high rigidity in addition to light weight and thin wall characteristics. It is demanded from.

  In addition, with the development of the information society, with regard to electrical and electronic equipment equipped with a printing mechanism represented by a printer, the printing mechanism housed inside the equipment has become large due to the widespread use of stationary models that mainly have multiple functions. In order to fix and protect the internal device of the device, high rigidity is required for a member and a case for fixing a part related to the mechanism in an electric / electronic device including a printing mechanism, Light weight is also required for the purpose of reducing the work burden when transporting larger equipment. On the other hand, there is a growing trend to pursue miniaturization with portable models that pursue convenience, and as a result, electric and electronic devices equipped with a printing mechanism are required to be lightweight and thin. . Further, the member that fixes the printing mechanism is required to have an excellent vibration attenuation rate in order to print characters and images sharply. In view of these, lightness, high rigidity, thinning, and vibration damping factor are required for members and casings that fix components related to the mechanism in electrical and electronic equipment including a printing mechanism.

  Furthermore, in electrical and electronic equipment equipped with a photographing mechanism, the use environment of the equipment is affected by external impacts such as outdoors due to the spread of security cameras due to, for example, the portability of cameras and the improvement of security awareness in general households. Therefore, high strength and rigidity are required for electrical / electronic devices equipped with a photographing mechanism. Furthermore, since the security camera is installed on the wall surface or ceiling, lightness is required due to the balance with the strength of the installation location. Furthermore, since precision is required for the imaging mechanism parts of the electrical / electronic devices including the imaging mechanism, dimensional stability is required for the member or the case for fixing the mechanism parts to the imaging mechanism.

  As described above, in order to satisfactorily satisfy the market requirements for these multiple products, a member that fixes the mechanical component in the electric / electronic device including these display mechanism, printing mechanism, acoustic mechanism, and photographing mechanism component. Alternatively, the casing is required to exhibit various and advanced characteristics such as thinning, lightening, high rigidity, dimensional stability, and vibration damping rate.

In order to satisfy the above requirements, for example, Patent Document 1 uses an injection-molded product made of a short cut carbon fiber and a thermoplastic resin as a casing of an electric / electronic device equipped with a display mechanism. Attempts to increase the rigidity and rigidity have been disclosed. However, in the current market, demands for weight reduction, thinning, and high rigidity are increasing, and further weight reduction, thinning, and high rigidity are required.
JP-A-11-272198

  An object of the present invention is to provide a lightweight electric / electronic device having at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism. .

In order to achieve the above object, the present invention adopts the following configuration. That is,
(1) An electrical / electronic device comprising at least one mechanical component selected from the group consisting of a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism, and a member or a housing for fixing the component related to the mechanism An electric / electronic device containing a fiber reinforced resin reinforced with at least a part of continuous reinforcing fibers.
(2) A planar fiber reinforced resin in which a matrix fixing resin is reinforced with a continuous resin as a first member, or a fiber fixing resin, thermoplastic as a second member, or a member for fixing a component related to the mechanism The resin composition includes at least one member having a three-dimensional shape selected from the group consisting of metal materials, and the first member and the second member are at least part of the surface of the first member. The electric / electronic device according to the above (1), which is integrated with each other.
(3) The electrical / electronic device according to (2), wherein the first member includes a laminate in which a group of reinforcing fibers in which a large number of reinforcing fibers are aligned in at least one direction are arranged in a layered manner.
(4) The electrical / electronic device according to (3), wherein a layer including a reinforcing fiber fabric is laminated on at least one outermost layer of the first member.
(5) The electrical / electronic device according to any one of (1) to (4), wherein the reinforcing fiber is a carbon fiber.
(6) The electrical / electronic device according to any one of (2) to (5), wherein the matrix resin in the first member is a thermosetting resin.
(7) The electrical / electronic device according to (6), wherein the matrix resin in the first member is an epoxy resin.
(8) The electrical / electronic device according to any one of (2) to (7), wherein the first member and the second member are joined via an adhesive layer.
(9) The adhesive layer according to (8), wherein the adhesive layer is an adhesive layer formed from a thermoplastic resin, and has an uneven shape at the interface with the matrix resin. Electronics.
(10) The electricity according to (9), wherein among the continuous reinforcing fibers in the first member, a large number of reinforcing fibers on the adhesive layer side surface layer are included in the thermoplastic resin of the adhesive layer. ·Electronics.
(11) The electric / electronic device according to any one of (1) to (10), wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a display panel. machine.
(12) A planar fiber-reinforced resin member in which a matrix resin as a first member is reinforced with continuous reinforcing fibers is disposed on a frame body and / or a back cover around the display panel, 11) The electrical / electronic device according to 11).
(13) The display panel (11) or (12), wherein the display panel is any one selected from the group consisting of a liquid crystal display having a diagonal length of 17 inches or more, a plasma display, an organic EL display, and a surface electrolytic display The electrical / electronic device according to any one of the above.
(14) The electric / electronic device according to any one of (1) to (10), wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a print head. machine.
(15) The electrical / electronic device according to any one of (1) to (10), wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a speaker. .
(16) The device according to any one of (1) to (10), wherein at least one mechanism component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a lens and a photoelectric conversion element. Electrical / electronic equipment.
(17) The electrical / electronic device according to (16), wherein a fiber reinforced resin reinforced with continuous reinforcing fibers is disposed on the cover and / or the lens barrel of the lens.

  As described below, the present invention can provide a lightweight electrical / electronic device including at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism.

  Hereinafter, the present invention will be described in detail with reference to the drawings according to one embodiment.

  FIG. 1 is a simplified view of an embodiment of a housing for fixing components related to a display mechanism in an electric / electronic device of the present invention using a planar laminate as a part of a back cover. A first member 1a made of a fiber reinforced resin reinforced with continuous reinforcing fibers and a second member 1b made of a thermoplastic resin composition as a standing wall portion are integrated to form, for example, a rear surface of a casing for a plasma display. An example of a cover 1c is shown.

  Further, FIG. 2 is a simplified view of an embodiment of the housing of the electric / electronic device according to the present invention in which the laminated body is used for the back cover and the frame, and the back cover, the front frame part, and the standing wall part are provided. The first members 2a and 2b made of a fiber reinforced resin reinforced with continuous reinforcing fibers and the second member 2c made of a thermoplastic resin composition as bosses and ribs are integrated to form, for example, a housing for a plasma display. An example of a body back cover 2d and a frame 2e is shown.

  Further, FIG. 3 is a simplified view of an embodiment of a housing for fixing components related to the printing mechanism in the electrical / electronic device of the present invention using the laminate as the back cover, and is continuously strengthened as the back cover. The first member 3a made of fiber reinforced resin reinforced with fibers and the second member 3b made of a thermoplastic resin composition as bosses and ribs are integrated to form, for example, a back cover 3c for a printer housing. An example is shown.

  Further, FIG. 4 is a simplified view of an embodiment of a housing for fixing components related to an acoustic mechanism in the electric / electronic device of the present invention using the laminate for the speaker box and the back plate. In addition, a first member 4a, 4b made of a fiber reinforced resin reinforced with continuous reinforcing fibers is used, and a second member made of a thermoplastic resin composition is integrated as a diaphragm, for example, a speaker housing An example of a speaker box and a frame is shown.

  Further, FIG. 5 is a simplified view of an embodiment of a housing for fixing components related to the photographing mechanism in the electrical / electronic apparatus of the present invention using the laminate as a still camera cover. An example is shown in which a first member 5a made of a fiber reinforced resin reinforced with a reinforced fiber and a second member 5b made of a thermoplastic resin composition are integrated to form a front cover housing 5c for a still camera, for example. Yes.

  The present invention is an electrical / electronic device comprising at least one mechanical component selected from the group consisting of a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism, and is a member or casing for fixing a component related to the mechanism. It is an electric / electronic device including a fiber reinforced resin reinforced with at least a part of continuous reinforcing fibers.

  Here, the continuation of continuous reinforcing fibers means that continuous fibers are arranged in at least one direction of the fiber reinforced resin, and is preferably a filament that is continuous over the entire molded product. However, it does not necessarily have to be continuous over the entire molded product, and there is no problem even if it is divided in the middle. It is preferable that the continuous reinforcing fiber has a length of 10 mm or more because it is excellent in handleability of the fiber reinforced resin reinforced with the continuous fiber, and high rigidity is obtained when the electric / electronic device of the present invention is obtained. Specific forms of reinforcing fibers include filaments, cloth, unidirectional (UD) cloth, unidirectional (UD), braided, multifilaments and spun yarns that are arranged in one direction with drum winds, etc. However, from the viewpoint of productivity in terms of the manufacturing process, cloth and UD can be preferably used. Moreover, these strengthening forms may be used independently or may use 2 or more types of strengthening forms together. Furthermore, it is good also as a sandwich form which laminated | stacked another base material between the lamination | stacking of the continuous reinforcing fiber group as needed. Further, in order to control strength and rigidity, a form in which the direction of the reinforcing fiber is changed and laminated is preferably used. In particular, it is preferable to use one direction (UD) in order to efficiently increase the rigidity and strength of the electrical / electronic device of the present invention. It is more preferable to arrange the angle of the outermost reinforcing fiber at about 45 degrees, with the longitudinal direction of the member fixing the part or the casing molded product as 0 degrees.

  Here, as the reinforcing fiber constituting the fiber reinforced resin included in the electric / electronic device of the present invention, for example, metal fiber such as aluminum fiber, brass fiber, stainless steel fiber, polyacrylonitrile-based, rayon-based, lignin-based, pitch-based In addition to fibers that exhibit electrical conductivity alone, such as carbon fibers and graphite fibers, insulating fibers such as glass fibers, aramid fibers, PBO fibers, polyphenylene sulfide fibers, polyester fibers, acrylic fibers, nylon fibers, polyethylene fibers, etc. Organic fibers, and inorganic fibers such as silicon carbide fibers and silicon nitride fibers, and fibers obtained by coating these fibers with a conductor. As a method for coating the conductor, for example, at least a metal such as nickel, ytterbium, gold, silver, copper, or aluminum is plated (electrolytic or electroless), CVD, PVD, ion plating, vapor deposition, or the like. A known method for coating one or more layers can be exemplified. These reinforcing fibers may be used alone or in combination of two or more.

  Furthermore, as the reinforcing fiber used in the present invention, a carbon fiber can be preferably used from the viewpoint of a balance of specific strength, specific rigidity, and lightness.

  When carbon fiber is described in detail, it means a fibrous material having a carbon content in the range of 85 to 100% by weight and at least partially having a graphite structure. Specific examples of the carbon fiber include polyacrylonitrile-based carbon fiber, rayon-based carbon fiber, lignin-based carbon fiber, pitch-based carbon fiber, vapor-grown carbon fiber, and carbon nanotube. Among these, when the electrical / electronic device of the present invention is used, polyacrylonitrile-based carbon fibers are preferable in that they exhibit good lightness, high rigidity, dimensional stability, excellent vibration damping rate, and can realize low cost. Used.

  The carbon fiber is preferably within the range of 15,000 to 500,000, more preferably 30,000 to 50,000, from the viewpoint of the economics of the thermoplastic fiber reinforced resin reinforced with carbon fibers and the handleability of the carbon fibers. It is bundled within the range of 250,000, particularly preferably 60,000 to 120,000.

  Further, as the matrix resin constituting the fiber reinforced resin contained in the electric / electronic device of the present invention, a thermosetting resin is preferably used from the viewpoint of excellent rigidity, strength, dimensional stability, and economy of the electric / electronic device. Can be used.

  Examples of thermosetting resins include unsaturated polyesters, vinyl esters, epoxies, phenols (resol type), urea melamines, polyimides, copolymers, modified products, and resins blended in two or more types. Can be used. Furthermore, an elastomer or a rubber component may be added to the thermosetting resin in order to improve impact resistance. Among these, as the thermosetting resin used in the present invention, an epoxy resin can be preferably used particularly from the viewpoint of the rigidity and strength of the molded product.

  In addition, as the matrix resin, in the electrical / electronic device of the present invention, the dimensional stability, designability, economy, productivity, appearance quality, heat resistance, and resistance of the member and the casing for fixing the parts related to the mechanism. From the viewpoint of chemical properties and rigidity, a thermoplastic resin can also be used. Examples of such thermoplastic resins include polycarbonate resins, styrene resins, polyamide resins, polyester resins, polyphenylene sulfide resins (PPS resins), modified polyphenylene ether resins (modified PPE resins), polyacetal resins (POM resins) and polyetherimide resins. It is preferably at least one selected from the group consisting of polyolefin resins such as (PEI resin), polypropylene resin (PP resin), and polyethylene resin (PE resin).

  As the thermoplastic resin, for example, when priority is given to dimensional stability, design, economy, productivity, and appearance quality, a polycarbonate resin, a styrene resin, a polyolefin resin, or the like is preferably selected, and mechanical characteristics, heat resistance, In the case where priority is given to chemical resistance, polyamide resin, polyester resin, polyphenylene sulfide resin, modified polyphenylene ether resin, polyacetal resin, polyetherimide resin are preferably selected, but are not limited thereto and may be used alone or as appropriate. Two or more types can be used. Furthermore, a thermoplastic resin may be previously melt-kneaded and used as a polymer alloy.

  Furthermore, the matrix resin constituting the fiber reinforced resin may contain other fillers and additives within a range not impairing the object of the present invention, depending on required characteristics. For example, inorganic fillers, flame retardants, conductivity imparting agents, crystal nucleating agents, ultraviolet absorbers, antioxidants, vibration damping agents, antibacterial agents, insect repellents, deodorants, anti-coloring agents, heat stabilizers, release agents , Antistatic agents, plasticizers, lubricants, colorants, pigments, dyes, foaming agents, antifoaming agents, coupling agents and the like. Examples of the conductivity-imparting agent include carbon black, amorphous carbon powder, natural graphite powder, artificial graphite powder, expanded graphite powder, pitch microbeads, vapor grown carbon fiber, and carbon nanotube.

  In the present invention, in the electrical / electronic device including at least one mechanism part selected from the display mechanism, the printing mechanism, the sound mechanism, and the photographing mechanism, the member or the case for fixing the part related to the mechanism is the first At least one tertiary selected from the group consisting of a planar fiber reinforced resin in which the matrix resin is reinforced with the continuous reinforcing fibers as a member and a fiber reinforced resin, a thermoplastic resin composition, and a metal material as a second member. It is preferable that a member having an original shape is included, and the first member and the second member are integrated through at least a part of the surface of the first member.

  Here, the planar shape of the planar fiber reinforced resin refers to a form having at least one substantially flat portion or a bent surface, and particularly when having a substantially flat surface, the maximum in the fiber reinforced resin. It is preferable that 30% or more of the surface having an area form a substantially flat surface because a high rigidity can be obtained when a member or a housing for fixing a component related to the mechanism is used. Here, examples of the substantially flat surface include a surface having the maximum projected area of the flat portion in the fiber reinforced resin.

  The second member is preferably selected from at least one member composed of a fiber reinforced resin reinforced with the continuous reinforcing fibers, a thermoplastic resin composition, and a metal material. Examples of the second member include a metal material obtained by subjecting aluminum, iron, magnesium, titanium, and an alloy thereof to a heat-adhesive surface treatment, polycarbonate resin, styrene resin, polyamide resin, polyester resin, polyphenylene sulfide. Polyolefin resins such as resin (PPS resin), modified polyphenylene ether resin (modified PPE resin), polyacetal resin (POM resin), polyetherimide resin (PEI resin), polypropylene resin (PP resin), polyethylene resin (PE resin), etc. Or the same fiber reinforced resin having the same requirements as the fiber reinforced resin may be pasted together. Furthermore, a metal material obtained by subjecting aluminum, iron, magnesium, titanium, or an alloy thereof to heat-adhesive surface treatment may be used. Among them, from the viewpoint of thinness, lightness, high rigidity, dimensional stability, and the like. A fiber reinforced resin reinforced with continuous reinforcing fibers is preferred. Furthermore, it is preferable that it has a heat-welding property from an adhesive viewpoint in the joining method joined via the contact bonding layer mentioned later.

  Furthermore, the thermoplastic resin composition constituting the second member may be fiber reinforced for that purpose, for example, metal fibers such as aluminum fibers, brass fibers and stainless fibers, polyacrylonitrile-based, rayon-based, lignin In addition to fibers that are electrically conductive, such as carbon fiber and pitch-based carbon fibers, graphite fibers, etc., insulating fibers such as glass fibers, aramid fibers, PBO fibers, polyphenylene sulfide fibers, polyester fibers, acrylic fibers, nylon fibers Organic fibers such as polyethylene fibers, and inorganic fibers such as silicon carbide fibers and silicon nitride fibers, and fibers obtained by coating these fibers with a conductor. As a method for coating the conductor, for example, at least a metal such as nickel, ytterbium, gold, silver, copper, or aluminum is plated (electrolytic or electroless), CVD, PVD, ion plating, vapor deposition, or the like. A known method for coating one or more layers can be exemplified.

  These reinforcing fibers may be used alone or in combination of two or more. Among them, carbon fiber, particularly polyacrylonitrile-based carbon fiber is preferably used from the viewpoint of the balance of specific strength, specific rigidity, and light weight, and in particular, at a low cost.

  Furthermore, it is preferable that the first member and the second member are integrated through at least a part of the surface of the first member, and as such an integration method, mechanical joining, thermal fusion, thermal welding are possible. Examples thereof include vibration welding, ultrasonic welding, laser welding, insert injection molding, and outsert injection molding.

  Furthermore, it is preferable that the fiber reinforced resin included in the electric / electronic device of the present invention includes a laminate in which a group of reinforcing fibers in which a large number of reinforcing fibers are aligned in at least one direction are arranged in a layered manner. A large number of the reinforcing fibers is preferable from the viewpoints of handleability, specific strength, and specific rigidity of the reinforcing fibers. From the viewpoint of handleability, specific strength, and specific rigidity of the reinforcing fibers, the multiple reinforcing fibers are preferably in the range of 15,000 to 500,000, more preferably in the range of 30,000 to 250,000. Particularly preferred are reinforcing fibers in which 60,000 to 120,000 fibers are assembled. Further, being aligned in one direction is preferable because high rigidity is obtained when the electrical / electronic device of the present invention is used, and that the laminated body is formed by arranging the reinforcing fiber groups in layers. It is preferable from the viewpoint of high rigidity and dimensional stability. Here, the laminate means a molded product having a form in which continuous reinforcing fiber groups are laminated in the thickness direction.

  Furthermore, it is preferable to use a reinforcing fiber woven fabric for the outermost layer in order to impart design properties to the first member. Specifically, a reinforcing fiber fabric having a woven form such as plain weave, satin weave, twill weave can be exemplified from the viewpoint of obtaining a beautiful cloth appearance, and further used for a fabric from the viewpoint of obtaining a beautiful cloth appearance. It is preferable to use a reinforcing fiber woven fabric in which the unit of the number of filaments in the reinforcing fiber group is in the range of 300 to 6000, and a carbon fiber woven fabric made of carbon fibers is preferable from the viewpoint of design and high rigidity.

  In the electrical / electronic device of the present invention, the first member made of the fiber reinforced resin and the second member described above are bonded via an adhesive layer, so that the adhesive strength at the time of integration is From the viewpoint of easy adhesion, the adhesive layer is preferably an adhesive layer formed from a thermoplastic fiber reinforced resin, and has an uneven shape at the interface with the matrix resin. It is preferable to be integrated because the adhesion strength and the ease of adhesion are further increased.

  The adhesive layer disposed on the first member made of the fiber reinforced resin is preferably a thermoplastic resin, and a layer is formed on the surface of the fiber reinforced resin reinforced with the continuous reinforcing fiber. It is preferable that In particular, the adhesive layer is preferably formed by attaching a thermoplastic resin in a film form from the viewpoint of adhesiveness. Examples of the thermoplastic resin for adhesion include resin compositions such as polyamide resin, polyester resin, EVA resin, polyurethane resin, polyolefin resin, polystyrene resin, copolymers thereof, modified products, and blended resins of two or more types. Of these, polyamide resins are preferred from the viewpoint of versatility. The thermoplastic resin as the adhesive layer is a hot melt resin having a melting point or a softening point. The average thickness of the thermoplastic resin film is preferably 0.1 to 1000 μm, more preferably 1 to 200 μm, and more preferably 10 to 50 μm from the viewpoint of adhesiveness.

  Furthermore, in the integration, the bonding state between the members includes a layer made of a matrix resin in the fiber reinforced resin reinforced with the continuous reinforcing fibers and the thermoplastic resin layer at the interface between these layers. A structure in which a group of filaments of continuous reinforcing fibers contained in the fiber reinforced resin are integrated with an uneven shape and are in contact with at least the matrix resin, and the remaining groups of filaments in the group of reinforcing fibers are in contact with at least the thermoplastic resin It is preferable to take

  The above structure is effective for an excellent integration method with another adherend (second member), and the resin of the matrix resin layer and the resin of the thermoplastic resin layer have an uneven shape at the interface. By having it, it is possible to obtain excellent adhesive strength after joining, and furthermore, since the filaments of the reinforcing fibers are in contact with the resin of the thermoplastic resin layer, good adhesive strength can be obtained after joining. Furthermore, since the thermoplastic resin layer is located on the surface of the first member, it is preferable because easy integration such as thermal welding can be applied. Here, a method for verifying these structures will be described, and one of the methods for implementation will be shown.

  First, as a first method, cross-sectional observation of a surface layer portion of a laminate (first member) made of a fiber reinforced resin reinforced with the continuous reinforcing fibers can be mentioned. A surface layer portion cut out from the laminate is cut into thin sections to obtain test pieces. At this time, the reinforcing fiber may fall off. A test piece is dye | stained as needed, and it observes using SEM, TEM, etc. Reinforcing fibers can be confirmed as a circular cross section or a drop mark thereof, and a portion excluding the reinforcing fibers can be confirmed as two regions having different contrasts between the matrix resin layer and the thermoplastic resin layer. In the laminate used in the present invention, the resin of the thermoplastic resin layer is impregnated into the reinforcing fiber group, and the interface with the matrix resin layer has an uneven shape.

  Further, as a second method, cross-sectional observation after solvent extraction of the laminate (first member) can be mentioned. The laminate is cut to a length of about 10 mm and a width of about 10 mm to obtain a test piece. After thoroughly washing the test piece with a good solvent for the resin constituting the thermoplastic resin layer to remove the thermoplastic resin, the cross section of the test piece is observed using an SEM. The laminated body used for this invention can confirm the area | region which has a space | gap between the matrix resin layer with which the reinforcing fiber group was filled with resin, and the filament of a reinforcing fiber group. It can be seen that this region corresponds to the thermoplastic resin layer, and the interface with the matrix resin layer is uneven.

  Furthermore, as a third method, observation after forced peeling from an integrated molded product can be mentioned. A peel test is forcibly performed at room temperature so that the integrated molded product composed of the laminate (first member) and the adherend (second member) is destroyed between the members. Residue from the laminate may adhere to the decomposed adherend, and the residue is observed with a microscope. In the laminate used in the present invention, a plurality of filaments dropped from the reinforcing fiber group on the adherend can be confirmed.

  When the laminate used in the present invention can be verified by the at least one method, at the interface between the matrix resin layer and the thermoplastic resin layer, the resin of the thermosetting resin layer and the resin of the thermoplastic resin layer Can be confirmed to have a structure of a molded body formed by being in contact with at least the resin of the thermoplastic resin layer. . In addition, it is desirable that the structure can be verified preferably by two or more methods. Furthermore, in order to verify the structure of the laminate used in the present invention, any method can be used as long as it can be confirmed that the reinforcing fiber group is impregnated with the resin of the thermoplastic resin layer. Can be used.

  Further, in the electrical / electronic device of the present invention, in the laminate used for the member or casing for fixing the component according to the mechanism, the continuous reinforcing fiber is used for the purpose of increasing the adhesive strength with other adherends. Among these, it is preferable that a large number of reinforcing fiber groups are included in the thermoplastic resin layer as an adhesive layer. Specifically, the maximum thickness of the region where the continuous reinforcing fibers are arranged is preferably 10 μm or more, more preferably 20 μm or more, and particularly preferably 40 μm or more. In the method for verifying the structure, it can be easily measured from observation photographs of the first method and the second method. Furthermore, if these maximum thicknesses are used within a range of 1000 μm or less, a sufficient adhesive effect can be obtained.

  In addition, from the viewpoint of maintaining the form of the electric / electronic device of the present invention after integration, it is preferable to have an adhesive layer on at least a part of the joint surface between the first member and the second member, It is more preferable to have an adhesive layer on 20% or more of the joint surface area, more preferably to have an adhesive layer on 50% or more of the joint surface area, and to have an adhesive layer on the entire surface of the joint surface. It is particularly preferred that

  In the electric / electronic device of the present invention, it is preferable that the mechanical component is at least one selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism from the viewpoint of sufficiently manifesting the effects of the present invention. The mechanical component is preferably a display panel. Furthermore, in the display panel, from the viewpoint that the lightness, thinness, and high rigidity, which are the effects of the present invention, can be fully utilized, continuous reinforcing fibers are provided on the frame body and / or the back cover around the display panel. It is preferable that a planar fiber-reinforced resin member reinforced with the above is disposed. It is preferable to use it for the frame body and / or the back cover around the display panel because an effect such as electromagnetic wave shielding can be exhibited in addition to the effects described above. Further, the display panel has a diagonal length of 17 inches or more, and is any one selected from a liquid crystal display, a plasma display, an organic EL (electroluminescence) display, and a surface electrolytic display. The light weight, high rigidity, thinning, and electromagnetic shielding properties can be effectively utilized, and more preferably 21 inches or more. Examples of the electric / electronic device provided with such a display panel as a display mechanism include a television monitor, a personal computer, and a mobile phone.

  Furthermore, in the electrical / electronic device of the present invention, the mechanical component is a print head, in addition to being able to fully utilize the light weight, thinning, and high rigidity effects of the present invention, and also having excellent vibration damping properties. It is preferable because it can be obtained. Specific examples of such print heads include ink jet, laser, impact, thermal, and thermal transfer print heads, and electric and electronic devices equipped with the print head as a printing mechanism include printers and word processors. Examples thereof include a typewriter, a plotter, and a copying machine. Among these, among the members and casings for fixing the mechanism in an electrical / electronic device using a printer as a printing mechanism, the side surface of the electrical / electronic device provided as the printing mechanism from the viewpoint of lightness, high rigidity, and vibration damping. It is preferable that a fiber reinforced resin reinforced with continuous reinforcing fibers is disposed on the back cover.

  Furthermore, in the electric / electronic device of the present invention, it is preferable that the mechanical component is a speaker, since the effects of lightness, thinning, and high rigidity of the present invention can be fully utilized. In particular, from the viewpoint of light weight, among the members and casings for fixing the mechanism in the electric / electronic device using the speaker as an acoustic mechanism, a fiber reinforced resin reinforced with continuous reinforcing fibers is arranged in the speaker box. It is preferable that Examples of the electric / electronic device having such a speaker as an acoustic mechanism include a speaker system, a car stereo, an MD player, and a CD player.

  Further, in the electrical / electronic device of the present invention, the mechanical parts are lenses and photoelectric conversion elements, in addition to being able to fully utilize the effects of light weight, thinning, and high rigidity of the present invention, and to improve dimensional stability. Is also preferable. Examples of the electric / electronic device having such a lens and a photoelectric conversion element as a photographing mechanism include a film still camera, a film video camera, a digital still camera, a digital video camera, and a security video camera. In particular, from the viewpoint of dimensional stability, it is preferable that a fiber reinforced resin reinforced with continuous reinforcing fibers is disposed in a cover and / or a lens barrel of an electric / electronic device using the lens as a photographing mechanism.

  Furthermore, the electrical / electronic device comprising at least one mechanism selected from the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is from the viewpoint of fully utilizing the light weight and high rigidity that are the effects of the present invention. It is preferably used by being fixed or installed on a wall surface or ceiling, which is also preferable from the viewpoint of space saving, which is also a market requirement.

  As described above, the member or case for fixing the mechanism of the electrical / electronic device including at least one mechanism selected from the display mechanism, the printing mechanism, the sound mechanism, and the photographing mechanism of the present invention is the continuous reinforcement. It is possible to integrate a fiber reinforced resin reinforced with fibers and a member that becomes a standing wall part, but it has at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism. There are no particular limitations on the shape of the member and casing for fixing the mechanism of the electrical / electronic device to be used. Further, the member for fixing the mechanism and the housing may be subjected to surface decoration treatment by plating, painting, vapor deposition, insert, stamping, laser irradiation, or the like.

  In addition, the fiber reinforced resin reinforced with the continuous reinforcing fiber is a device for fixing the mechanism of an electric / electronic device having at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism. In the member or casing, from the viewpoint of thinness and lightness, the average thickness of the fiber reinforced resin reinforced with continuous reinforcing fibers is preferably 0.1 to 5 mm, and preferably 0.3 to 3 mm. More preferably, it is 0.5-1.6 mm. Here, the average thickness of the fiber reinforced resin reinforced with the continuous reinforcing fibers is an average value of measured values of at least five points evenly distributed in the substantially flat portion. In the measurement of the average thickness, parts that are intentionally given a shape such as a rib part, a hinge part, and a convex concave part are excluded.

  Reinforced by continuous reinforcing fibers constituting an electric / electronic device having at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism of the present invention, a device member or a housing for fixing the mechanism. The fiber reinforced resin can be produced by the following method.

  Reinforced by a continuous reinforcing fiber constituting a member or casing for fixing the mechanism of an electric / electronic device having at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism of the present invention. For example, when a thermosetting resin is used as a matrix resin, a fiber reinforced resin is produced by using a thermoplastic resin used as an adhesive layer on at least a part of the surface of a prepreg laminate including the thermosetting resin as a matrix resin. It consists of a laminating step of arranging, and then a thermoforming step of melting the thermoplastic resin and forming a film in parallel with the curing reaction of the thermosetting resin. That is, the thermoplastic resin is disposed in a film shape on the surface layer of the thermosetting resin before curing, and then cured at a temperature equal to or higher than the melting point of the thermoplastic resin, and thus the thermosetting resin and the thermoplastic resin are well bonded. A laminated body in a state can be obtained.

  Further, when using a thermoplastic resin as a matrix resin, at least a laminating step of disposing a thermoplastic resin used as an adhesive layer on a part of the surface of the prepreg laminate including the thermoplastic resin as a matrix resin; Concurrently with the melting of the thermoplastic resin as the matrix resin, it comprises a thermoforming process in which the thermoplastic resin used as the adhesive layer is melted to form a film. As a result, it is possible to obtain a laminate in which the thermoplastic resin as the matrix resin and the thermoplastic resin used as the adhesive layer are well bonded.

  Here, the specific production method of the resin reinforced with the continuous reinforcing fibers is not particularly limited, and is a hand lay-up molding method, a spray-up molding method, a vacuum back molding method, a pressure molding method. And a method using a thermosetting resin such as an autoclave molding method, a press molding method and a transfer molding method, and a method using a thermoplastic resin such as a press molding and a stamping molding method. In particular, vacuum back molding, press molding, transfer molding, and the like are preferably used from the viewpoint of processability and mechanical properties.

  Further, the first member obtained from the above is mechanically joined to the second member, at least one of thermal fusion, thermal welding, vibration welding, ultrasonic welding, laser welding, insert injection molding, and outsert injection molding. Although it completes by integrating using a method, these integration methods may use 2 or more types together.

  Regarding the integration, the first member and the second member are integrated, and the mechanism of the electric / electronic device including at least one mechanism selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism is fixed. As a method for obtaining a member and a casing to be manufactured, the first member is formed in advance, the method (i) in which both are integrated simultaneously with the formation of the second member, and the second member is formed in advance. , Using a method (ii) that integrates the first member at the same time as the molding of the first member, a method (iii) that molds the first member and the second member separately in advance, and integrates the two. Can do.

Further, as a specific form of integration, mechanical joining such as fitting, fitting, screw, rivet joining, etc. may be used, or it can be used in combination with an integration method using an adhesive layer. As a specific example, the laminate is manufactured in advance by press molding, processed into a predetermined size, post-processed to form a first member, inserted into an injection mold, and the second member is injection molded. The method of integrating by doing can be illustrated.

  As a specific example of the construction method (ii), a second member previously produced by injection molding and post-treated is inserted into a press die, and then a continuous reinforcing fiber base is used as the first member. An example is a method in which a material (prepreg) is used, laid up, and integrated by vacuum back molding at a temperature equal to or higher than the melting point of the thermoplastic resin.

  Furthermore, as a specific example of the construction method (iii), a first member that has been manufactured in advance by press molding, processed to a predetermined size, and post-processed, and a second member that has been manufactured and post-processed in advance by injection molding are used. The method of integrating like (ii) can be illustrated.

  A member or housing for fixing a mechanical component of an electric / electronic device including at least one mechanical component selected from the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism of the present invention integrated by such a construction method, Lightness that cannot be realized by integration with a metal material can be obtained. Furthermore, it exhibits excellent adhesive force, and solves the problem of peeling between materials that becomes a problem when integrated with a thermosetting resin. In addition, the member or the case for fixing the mechanical component of the electric / electronic device including at least one mechanism selected from the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism of the present invention is the exemplified construction method. However, it is not limited by specific examples.

EXAMPLES The present invention will be described more specifically with reference to the following examples. However, the following examples are not intended to limit the present invention, and all modifications can be made without departing from the gist of the preceding and following descriptions. It is included in the technical scope.
(Adhesive layer)
A pellet of ternary copolymerized polyamide resin CM4000 (nylon 6/66/610) manufactured by Toray Industries, Inc. was processed into a non-woven fabric to form an adhesive layer. The basis weight of this thermoplastic resin for heat bonding was 50 g / m ² .
Example 1
(Laminate 1)
As a prepreg constituting the laminate 1, carbon fiber made by Toray Industries, Inc. ("Treka (registered trademark)" M46J (tensile strength 4200 MPa, tensile elastic modulus 436 GPa, number of filaments 6000, fiber basis weight 0.2 g / m) )), 130 ° C. type epoxy resin as matrix resin, prepreg carbon fiber basis weight is 116 g / m ² , resin content (Wr) is 30% unidirectional (UD) prepreg (Toray Industries, Inc. (Registered trademark) “prepreg P6053-12) was used. This was cut into four pieces having a size of 1000 mm horizontally with the fiber longitudinal direction and 700 mm perpendicular to the fiber longitudinal direction, and further cut into four pieces having a size of 700 mm horizontally with the fiber longitudinal direction and 1000 mm perpendicular to the fiber longitudinal direction. .

  Next, eight prepregs are laminated on the female die so that the longitudinal direction of the fiber is 0 ° and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, and 0 ° from the top. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

  Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, the laminate was cooled at room temperature, demolded, and the molded laminate was taken out to produce a planar laminate. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.

A 10 mm square test piece was cut out from the layered laminate of the thermoplastic resin for thermal bonding obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin. As a result of SEM observation, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the minimum portion is 30 μm and the maximum portion is 50 μm.
(Electric / electronic equipment members and casings equipped with display mechanisms)
The laminated body 1 is used as a first member (back cover), inserted into an injection mold, and as a second member, a long fiber pellet TLP1146S manufactured by Toray Industries, Inc. (carbon fiber content 20%, in the pellet) A carbon fiber length of 7 mm and a matrix resin polyamide 6) are used to form and integrate a frame body portion, a boss, and a hinge portion by injection molding, and fix the mechanism of an electric / electronic device having a display mechanism. Let it be a member and a housing. At this time, components / members formed by injection molding are in contact with the portion of the laminated body where the adhesive layers are laminated. The injection molding machine used was J350EIII manufactured by Nippon Steel, Ltd., and was performed at a screw speed of 60 rpm, a cylinder temperature of 280 ° C., an injection speed of 90 mm / sec, an injection pressure of 200 MPa, a back pressure of 0.5 MPa, and a mold temperature of 55 ° C. .

In the member and casing used for the electric / electronic device having the created display mechanism, the thickness of the substantially planar portion was 1.0 mm. Moreover, the average length of the carbon fiber in the resin used for the member and housing | casing in the present Example 1 was 800 mm. Here, the average length of the carbon fiber in the member and the casing in this example was determined as follows. First, a member for an electric / electronic device and a housing having a display mechanism are decomposed under conditions of 550 ° C. and 4 hours in an oxygen atmosphere, and a group of carbon fibers in the fiber reinforced resin is collected. Ten carbon fibers were arbitrarily taken out from, and their lengths were measured. By calculating the average of the measurement results, the average length of the carbon fiber was obtained.
(Example 2)
(Laminate 2)
As a prepreg constituting the laminate 2, a carbon fiber prepreg ("Thermo-Lite" manufactured by Phoenix TPC, which is a UD prepreg made of carbon fiber and polyamide 6 resin (carbon fiber basis weight on the prepreg is 150 g / m ² , Wr40%). (Registered Trademark) “1160N) is used, and the same size and number of sheets as in Example 1 are cut and laminated to produce a laminated body as the first member.

  Next, the laminated body is arranged in a male mold, and one piece of the thermoadhesive thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminated body is laminated. . Next, a female die is set and press molding is performed. After preheating at 160 ° C. for 5 minutes in a press molding machine to melt the adhesive, the matrix resin thermoplastic resin is melted by heating at 300 ° C. for 5 minutes while applying pressure to a surface pressure of 4 MPa. Was applied. After the pressing, the flat laminate formed by cooling at room temperature and demolding was taken out. The average thickness of the molded laminate was 1.0 mm.

A 10 mm square test piece was cut out from the layered laminate of the thermoplastic resin for thermal bonding obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin. SEM observation is performed. As a result, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the minimum portion is 28 μm and the maximum portion is 52 μm.
(Electric / electronic equipment members and casings equipped with display mechanisms)
Using a method similar to that in Example 1, a member for an electric / electronic device and a housing having a display mechanism were produced. Further, the same second member as in Example 1 was used.

The member for electric / electronic equipment and the casing provided with the created display mechanism had a substantially flat portion thickness of 1.0 mm. Moreover, as a result of calculating | requiring the average length of the carbon fiber in the fiber reinforced resin used for the housing | casing in the present Example 2 by the method similar to Example 1, it was 800 mm.
Example 3
(Laminate 3)
As the prepreg constituting the laminate 3, the same carbon fiber prepreg as in Example 1 was used, and four sheets were cut into a size of 1300 mm horizontally with the fiber longitudinal direction and 900 mm perpendicular to the fiber longitudinal direction, and further with the fiber longitudinal direction Are cut into a size of 900 mm horizontally and 1300 mm perpendicular to the longitudinal direction of the fiber, and a laminate used for a member for an electric / electronic device and a casing (back cover) having a display mechanism as a first member is manufactured. .

  First, 8 pieces of female molds are set so that the longitudinal direction of the rectangular bottom is 0 °, the longitudinal direction of the fiber is 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, 0 °. Laminated prepregs. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After the curing was completed, the laminate was cooled at room temperature and removed from the mold to remove the molded laminate. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.
(Laminate 4)
As a prepreg constituting the laminate 4, carbon fiber ("Treka (registered trademark)" T300B-3K (tensile strength 3500 MPa, tensile elastic modulus 230 GPa, number of filaments 3000, fiber basis weight 0.2 g) as reinforcing fibers / M)) as warp and weft, carbon fiber woven with a plain weave so that the warp and weft are 5 / cm, and a carbon fiber basis weight using a 130 ° C. curing type epoxy resin as a matrix resin. / ^{m 2,} was used a resin content of (Wr) is 40% of the cross prepreg (Toray Industries Co., Ltd. "Torayca (registered trademark)" prepreg F6343B-05). This is cut into four pieces of 1500 mm horizontally with the fiber longitudinal direction and 900 mm perpendicular to the fiber longitudinal direction, and further cut to 900 mm horizontally with the fiber longitudinal direction and 1500 mm perpendicular to the fiber longitudinal direction, The laminated body used for the member for electrical / electronic devices and the housing | casing (frame body) which comprise the display mechanism used as a 1st member is manufactured.

  First, the longitudinal direction of the rectangular bottom surface of the female mold is set to 0 °, the fiber longitudinal direction is set to 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, and 0 ° from the top. Eight prepregs are stacked. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

  Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, it was cooled at room temperature, demolded, and the molded laminate was taken out. Next, a rectangle having a central portion of 1100 mm × 730 mm was removed by punching. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.

A 10 mm square test piece was cut out from the portion of the laminates 3 and 4 obtained by laminating the thermoplastic resins for thermal bonding obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin. Thereafter, SEM observation is performed. As a result, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where the continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the laminate 3 has a minimum portion of 30 μm and a maximum portion of 50 μm. The laminate 4 has a minimum portion of 27 μm and a maximum portion of 44 μm.
(Electric / electronic equipment members and casings equipped with display mechanisms)
The laminate 3 is used as a first member (back cover), inserted into an injection molding die, and a boss and a hinge portion are injected using a long fiber pellet TLP1146S manufactured by Toray Industries, Inc. as a second member. It is formed and integrated by molding, and is used as a member for an electric / electronic device having a display mechanism and a back cover of the casing. At this time, parts / members formed by injection molding are in contact with the portion of the laminated body where the adhesive layers are laminated. The injection molding machine and molding conditions were the same as in Example 1.

  The member for an electric / electronic device and the housing provided with the created display mechanism had a substantially flat portion thickness of 1.0 mm. Moreover, the average length of the carbon fiber in the resin used for the housing | casing for display apparatuses was 800 mm.

  Next, the laminated body 4 is used as a first member (frame body), inserted into an injection mold, and a second member is used as a second member using a long fiber pellet TLP1146S manufactured by Toray Industries, Inc. It is formed by injection molding, and is used as a member for an electric / electronic device having a display mechanism and a casing frame. At this time, parts / members formed by injection molding are in contact with the portion of the laminated body where the adhesive layers are laminated. The injection molding machine and molding conditions were the same as in Example 1.

The laminated body 3 and the laminated body 4 are integrated by fitting to produce a member for an electric / electronic device and a housing having a display mechanism. The produced member and the housing have a substantially flat portion having a thickness of 1 0.0 mm. Moreover, the average length of the carbon fibers in the resin used for the housing in Example 3 was 850 mm.
Example 4
(Laminate 5)
As the prepreg constituting the laminate 5, the same carbon fiber prepreg as in Example 1 was used, and four sheets were cut into a size of 1200 mm horizontally with the fiber longitudinal direction and 200 mm perpendicular to the fiber longitudinal direction, and further in the fiber longitudinal direction. Then, it is cut into a size of 200 mm horizontally and 1200 mm perpendicular to the longitudinal direction of the fiber, and a laminate for use in a member for equipment and a housing having a printing mechanism as a first member is manufactured.

  First, 8 pieces of female molds are set so that the longitudinal direction of the rectangular bottom is 0 °, the longitudinal direction of the fiber is 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, 0 °. Laminated prepregs. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

  Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, it was cooled at room temperature, demolded, and the molded laminate was taken out. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.

A 10 mm square test piece was cut out from the laminated body of the thermoplastic resin for thermal bonding of the laminate obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin, SEM observation is performed. As a result, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the minimum portion is 30 μm and the maximum portion is 50 μm.
(Members and casings for equipment with printing mechanism)
The laminate 5 is used as a first member (back cover), inserted into an injection mold, and the second member is injected with bosses and hinges using TLP 1146S manufactured by Toray Industries, Inc. It is formed and integrated by molding, and is used as a device cover and a back cover of a housing having a printing mechanism. At this time, parts / members formed by injection molding are in contact with the portion of the laminated body where the adhesive layers are laminated. The injection molding machine and molding conditions were the same as in Example 1.

The device member and casing provided with the created printing mechanism had a substantially flat portion thickness of 1.0 mm. The average length of the carbon fibers in the resin used for the member and the casing was 500 mm.
(Example 5)
(Laminated body 6)
As the prepreg constituting the laminate 6, the same carbon fiber prepreg as in Example 1 was used, and four sheets were cut into a size of 900 mm horizontally with the fiber longitudinal direction and 600 mm perpendicular to the fiber longitudinal direction. Then, the laminate is cut into a size of 600 mm horizontally and 900 mm perpendicular to the longitudinal direction of the fiber, and a laminated body used for a device member and a housing having an acoustic mechanism as a first member is manufactured.

  First, 8 pieces of female molds are set so that the longitudinal direction of the rectangular bottom is 0 °, the longitudinal direction of the fiber is 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, 0 °. Laminated prepregs. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes in a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, it was cooled at room temperature, demolded, and the molded laminate was taken out. Next, the speaker installation part 1 was removed by punching into a circle with a diameter of 120 mm and the speaker installation part 2 with a diameter of 200 mm. Further, the diaphragm connecting portion was removed by punching into a circle having a diameter of 75 mm. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.
(Laminate 7)
As the prepreg constituting the laminate 7, the same carbon fiber prepreg as in Example 1 was used, and four sheets were cut into a size of 320 mm horizontally with the fiber longitudinal direction and 600 mm perpendicular to the fiber longitudinal direction. Then, the laminate is cut into a size of 600 mm horizontally and 320 mm perpendicular to the longitudinal direction of the fiber, and a laminated body used for a device member and a housing having an acoustic mechanism as a first member is manufactured.

  First, 8 pieces of female molds are set so that the longitudinal direction of the rectangular bottom is 0 °, the longitudinal direction of the fiber is 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, 0 °. Laminated prepregs. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

  Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, it was cooled at room temperature, demolded, and the molded laminate was taken out. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.

A 10 mm square test piece was cut out from the laminated body of the thermoplastic resin for thermal bonding of the laminate obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin, SEM observation is performed. As a result, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the minimum portion is 30 μm and the maximum portion is 50 μm.
(Equipment members and casings equipped with acoustic mechanisms)
The laminated body 6 was used as a first member, and a circular diaphragm was attached to the diaphragm attachment portion by heat welding. Thereafter, the laminated member 7 is used as the second member (back cover), and is integrated by thermal welding under conditions of 150 ° C. and 5 minutes to form a device member and a housing having an acoustic mechanism. At the time of this integration, the portion that becomes the joining portion is in contact with the portion where the adhesive layer of the laminate is laminated.

The device member and casing provided with the prepared acoustic mechanism had a substantially flat portion thickness of 1.0 mm. Moreover, the average length of the carbon fiber in the fiber reinforced resin used for the member and the casing was 400 mm.
(Example 6)
(Laminated plate 8)
As the prepreg constituting the laminate 8, the same carbon fiber prepreg as that of Example 1 was used, and four sheets were cut into a size of 220 mm horizontally with the fiber longitudinal direction and 50 mm perpendicular to the fiber longitudinal direction. And 50 mm horizontally and 220 mm perpendicular to the longitudinal direction of the fiber, and a laminated body used for a device member and a housing having an imaging mechanism as a first member is manufactured.

  First, 8 pieces of female molds are set so that the longitudinal direction of the rectangular bottom is 0 °, the longitudinal direction of the fiber is 0 °, and 0 °, 90 °, 90 °, 0 °, 90 °, 90 °, 0 °. Laminated prepregs. From the top of the last laminated prepreg, one sheet of the heat-bonding thermoplastic resin, which is the third adhesive layer produced by the above-described method, is cut into the same size as the laminate.

  Next, the laminate is placed in a male mold, the female mold is set, and hot press molding is performed. After preheating at 160 ° C. for 5 minutes with a press molding machine to melt the adhesive layer, the thermosetting resin of the laminate was cured by heating at 150 ° C. for 30 minutes while applying pressure to a surface pressure of 4 MPa. . After completion of curing, it was cooled at room temperature, demolded, and the molded laminate was taken out. Next, the lens barrel installation part was removed by punching into a circle with a diameter of 40 mm. When the average thickness of the molded laminate was measured, it was a 1.0 mm laminate.

A 10 mm square test piece was cut out from the laminated body of the thermoplastic resin for thermal bonding of the laminate obtained above, and ultrasonically washed with methyl alcohol for 30 minutes to remove the adhesive thermoplastic resin, SEM observation is performed. As a result, fiber bundles are barely observed on the surface. Further, in the cross section, a two-layer structure of a fiber group layer having voids in the surface direction of the molded body and a fiber group layer having no voids in the inner direction of the molded body is observed. The interface of these layers has an uneven shape. The layer of the fiber group having voids is a region where continuous filaments of the thermoplastic resin layer are arranged. When the thickness is measured, the minimum portion is 30 μm and the maximum portion is 50 μm.
(Equipment members and casings equipped with photographing mechanisms)
The laminate 8 is used as a first member, inserted into an injection mold, and a boss and hinge are formed by injection molding using a long fiber pellet TLP1146S manufactured by Toray Industries, Inc. , And an apparatus member and a housing (back cover) which are integrated and have a photographing mechanism. At this time, parts / members formed by injection molding are in contact with the portion of the laminated body where the adhesive layers are laminated. The injection molding machine and molding conditions were the same as in Example 1.

  The device casing provided with the created imaging mechanism had a substantially flat portion thickness of 1.0 mm. The average length of the carbon fibers in the fiber reinforced resin used for the still camera casing was 120 mm.

  The member for electric / electronic devices and the case having the display mechanism of Examples 1 to 3 manufactured by the above method could not be formed with the member and the case for electric / electronic device having the conventional display mechanism, In addition to excellent lightness, high rigidity, and thinness, electromagnetic shielding properties have been achieved, resulting in electrical and electronic equipment that can fully satisfy market demands. The electric / electronic device of the present invention can be suitably used for, for example, a plasma display characterized by a thin shape.

  The member for electric / electronic devices and the casing provided with the printing mechanism of Example 4 manufactured by the above-described method could not be achieved with the member and the casing for electric / electronic devices including the conventional printing mechanism. In addition to lightness, thinness, and high rigidity, vibration / damping properties have been achieved, and electrical and electronic equipment with a printing mechanism that can fully satisfy market demands has been obtained. The electrical / electronic device of the present invention can be suitably used for, for example, a stationary printer or a portable printer.

  The member and casing for electrical / electronic equipment having the acoustic mechanism of Example 5 manufactured by the above method have excellent light weight and high performance that cannot be achieved by a casing for equipment having a conventional acoustic mechanism. An equipment housing having an acoustic mechanism that achieves rigidity and can sufficiently satisfy market demands has been obtained. The electric / electronic device including the acoustic mechanism of the present invention can be suitably used for speaker applications such as a wall-mounted type and a home theater.

  The device member and casing provided with the imaging mechanism of Example 6 produced by the above method have excellent lightness, high rigidity, and dimensions that could not be achieved with the appliance casing provided with the conventional imaging mechanism. An equipment housing provided with a photographing mechanism that achieves stability and can sufficiently satisfy market demands has been obtained. The electric / electronic device including the photographing mechanism of the present invention can be suitably used for, for example, a portable still camera, a video camera, and the like.

  The present invention is not limited to a member or a housing for fixing a component related to the mechanism of an electric / electronic device including at least one mechanism component selected from a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism. Although it can be applied to a member or a casing of a terminal device, a video, a DVD (Digital Versatile Disk / Digital Video Disk) device or the like, the application range is not limited thereto.

It is a simplified view of an embodiment of a housing in an electric / electronic device according to the present invention in which a planar laminate is used as a part of a back cover. It is a simplified diagram of an example of a case in an electric / electronic device of the present invention which uses a layered product for a back cover and a frame. It is a simplified diagram of an example of a case in an electric / electronic device of the present invention using a laminate as a back cover. It is a simplified diagram of an example of a case in an electric / electronic device of the present invention in which a laminate is used for a speaker box and a back plate. It is a simplified diagram of an example of a case in an electric / electronic device of the present invention using a laminated body for a still camera cover.

Explanation of symbols

1a: a first member constituting a back cover of an electric / electronic device having a display mechanism 1b: a second member 1c constituting a back cover of the electric / electronic device having a display mechanism: electricity having a display mechanism Electronic device back cover 2a: first member 2b constituting a frame of an electric / electronic device having a display mechanism: second member 2c constituting a frame of an electric / electronic device having a display mechanism: The first member 2d constituting the back cover of the electric / electronic device including the display mechanism: the frame 2e of the electric / electronic device including the display mechanism: the back cover 3a of the electric / electronic device including the display mechanism: the printing mechanism The first member 3b constituting the back cover of the electric / electronic device comprising: the second member 3c constituting the back cover of the electric / electronic device comprising the printing mechanism: of the electric / electronic device comprising the printing mechanism Rear panel -4a: a first member 4b constituting a speaker box of an electric / electronic device having an acoustic mechanism 4b: a first member 4c constituting a back plate of the electric / electronic device having an acoustic mechanism: an acoustic mechanism. Speaker box and back plate 5a of electric / electronic device: first member 5b constituting still camera cover of electric / electronic device having photographing mechanism: still camera cover of electric / electronic device having photographing mechanism Second member 5c: Still camera cover of an electric / electronic device having a photographing mechanism

Claims (17)

An electric / electronic device comprising at least one mechanical part selected from the group consisting of a display mechanism, a printing mechanism, an acoustic mechanism, and a photographing mechanism, and at least a part of a member or a casing for fixing the part related to the mechanism Electrical and electronic equipment containing fiber reinforced resin reinforced with continuous reinforcing fibers. A member for fixing the parts related to the mechanism or the casing is a planar fiber reinforced resin in which a matrix resin is reinforced with continuous reinforcing fibers as a first member, and a fiber reinforced resin and a thermoplastic resin composition as a second member. And a member having at least one three-dimensional shape selected from the group consisting of metal materials, and the first member and the second member are integrated via at least a part of the surface of the first member. The electric / electronic device according to claim 1. The electrical / electronic device according to claim 2, wherein the first member includes a laminated body in which a group of reinforcing fibers in which a large number of reinforcing fibers are aligned in at least one direction are arranged in a layer form. The electric / electronic device according to claim 3, wherein a layer including a reinforcing fiber fabric is laminated on at least one outermost layer of the first member. The electric / electronic device according to claim 1, wherein the reinforcing fiber is a carbon fiber. The electric / electronic device according to claim 2, wherein the matrix resin in the first member is a thermosetting resin. The electrical / electronic device according to claim 6, wherein the matrix resin in the first member is an epoxy resin. The electric / electronic device according to claim 2, wherein the first member and the second member are joined via an adhesive layer. The electric / electronic device according to claim 8, wherein the adhesive layer is an adhesive layer formed of a thermoplastic resin, and is bonded with an uneven shape at an interface with the matrix resin. The electrical / electronic device according to claim 9, wherein among the continuous reinforcing fibers in the first member, a large number of reinforcing fibers on the surface layer of the adhesive layer are included in the thermoplastic resin of the adhesive layer. The electrical / electronic device according to claim 1, wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a display panel. The planar fiber reinforced resin member which reinforced the matrix resin which is the 1st member with the continuous reinforcement fiber is arrange | positioned at the frame around the said display panel, and / or the cover of a back surface. Electrical and electronic equipment. 13. The display panel according to claim 11, wherein the display panel is one selected from the group consisting of a liquid crystal display having a diagonal length of 17 inches or more, a plasma display, an organic EL display, and a surface electrolytic display. Electrical / electronic equipment. The electrical / electronic device according to claim 1, wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a print head. The electrical / electronic device according to claim 1, wherein at least one mechanism component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a speaker. The electrical / electronic device according to claim 1, wherein at least one mechanical component selected from the group consisting of the display mechanism, the printing mechanism, the acoustic mechanism, and the photographing mechanism is a lens and a photoelectric conversion element. 17. The electric / electronic device according to claim 16, wherein a fiber reinforced resin reinforced with continuous reinforcing fibers is disposed on the lens cover and / or the lens barrel.

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