Abstract: An object of the present invention is to manufacture a lightweight and strong composite of a magnesium alloy and a CFRP, by strongly bonding the magnesium alloy and the CFRP using an epoxy adhesive. The magnesium alloy having specific ultra-fine irregularities is compatible with an epoxy resin adhesive and exhibits thus strong adhesion. A magnesium alloy composite plate material 23, in which magnesium alloy plates 25 and a CFRP 24 are integrated by exploiting this technique, can be used in ordinary assembly structures with other metal members 28 and bolts 27. The magnesium alloy plates 25 can withstand strong local forces, and hence the CFRP 24 is not damaged. As a result, the composite is effective for applications in, for instance, casings, bodies and parts in mobile equipment such as automobiles or in mobile devices, where lightweightness, toughness and ease of assembly are required.

Abstract: The object of the present invention is to strongly join an aluminum alloy part with an FRP prepreg. An object obtained by subjecting an aluminum alloy to a suitable liquid treatment so as to form a surface having large, micron-order irregularities and also fine irregularities with a period of several tens of nanometers, eliminating the presence of sodium ions from the surface and additionally forming a surface film of aluminum oxide, which is thicker than a natural oxide layer, has been found to have a powerful adhesive strength with epoxy-based adhesives. By simultaneously curing an FRP prepreg which uses the same epoxy-based adhesive in the matrix, an integral composite or structure in which FRP and aluminum alloy have been united at a joining strength of unprecedented magnitude is produced.

Abstract: An optical sheet retaining tool for a liquid crystal display device is provided, the tool being of a simple structure and low in cost, and operations for assembling and disassembling the display device can be performed easily.

Abstract: It is an object to manufacture a composite of a metal part and a resin composition part, which is improved so as to securely join and integrate stainless steel and a resin. A stainless steel part whose surface has been suitably roughened by chemical etching or the like can be used. An integrated product is obtained by inserting a stainless steel piece 1 with its surface treated into a cavity formed by a movable-side mold plate 2 and a fixed-side mold plate 3 of a metallic mold for injection molding 10 and injecting a specific resin. PBT, PPS or an aromatic polyamide resin can be used as the main resin component of a resin composition 4 that is used. High injection joining strength is obtained if the resin composition contains, as an auxiliary component, PET and/or a polyolefin resin in the case of PBT, a polyolefin resin in the case of PPS and an aliphatic polyamide resin in the case of an aromatic polyamide resin.

Abstract: A composite of a magnesium part or a magnesium alloy part and a resin composition, improved to have high corrosion resistance, is manufactured by: a step of shaping a magnesium alloy part 1 from a casting or an intermediate material; a step of immersing and chemically etching the shaped part in an acidic aqueous solution; a step of immersing the chemically etched shaped part in an aqueous solution containing potassium permanganate and forming on the surface thereof a thin layer having manganese oxide as a component; a step of inserting the part, on which the thin layer has been formed, into a metallic mold for injection molding and injecting into the mold a resin composition selected out of a resin composition whose main component is polyphenylene sulfide, a resin composition whose main component is a polybutylene terephthalate resin and a resin composition whose main component is an aromatic polyamide resin and then integrally affixing the magnesium alloy part 1 and the resin composition 4; and a step of sub

Abstract: The present invention is useful for achieving a reduction in weight and for attaining increased strength in not only electronic devices and domestic electric devices but also various parts and structures. As a pretreatment, a rib (3) is dipped in an aqueous solution of ammonia, hydrazine, a hydrazine derivative, or a water-soluble amine compound. A metal frame (2) is inserted into an injection mold for forming ribs (3) by injection molding. A thermoplastic resin composition is injected to the surface of the metal frame (2) by injection molding to form ribs (3). In the housing of a casing cover (1) thus formed, the metal frame (2) and the ribs (3) made of the thermoplastic resin composition are integrally bonded together. Thus, the housing improves strength and external appearance. Moreover, a complicated configuration and structure can be formed in the housing.

Abstract: [Problem] A composite of a metal part and a resin composition part that is improved so that the metal and resin are integrally joined to have strong bonding properties, and a method for manufacturing the composite. [Solution] A magnesium alloy part is inserted into a mold, a resin composition is injected and joined to the part, and a composite is obtained. A part having, formed thereon, a surface layer of a metal oxide, a metal carbonate, or a metal phosphate in use of a usual conversion treatment or a modification method thereof can be used for the magnesium alloy plate 1. The surface that has a larger amount of crystal-like objects of a nanolevel on the surface layer composed of the metal oxide, metal carbonate, or metal phosphate has a higher level of hardness, microscopic roughness, and good injection joining force, and these parameters can be controlled by a conversion treatment method. A resin composition 4, containing PBT or PPS as the main component, is used as the resin composition part.

Abstract: Combining good metal chassis and good synthetic resin structures, achieving mass production with high productivity, and enabling free design of shapes and structures, are all important considerations in electronic devices, household electric appliances and the like. Moreover, the need for components that are useful in reducing the weight and increasing the strength of various parts and structures is not restricted to electronic devices and household electric appliances. The surface of an aluminum alloy shaped product is covered with ultrafine recesses by being dipped in an eroding aqueous solution, or has formed thereon a metal oxide layer covered with the openings of ultrafine pores by anodizing. On the resin side, there is prepared a polyamide resin compounded with an impact resistance modifier, a mixture of an aliphatic polyamide and an aromatic polyamide, or a mixture of aromatic polyamides.

Abstract: The present invention provides electrical equipment for junction improved in sealing performance and reduced in size and weight, and also provides a method of manufacturing the same. A face cover 6 and a back cover 7 are press-formed from an aluminum alloy. An electrical component 2 including a board 3, electronic parts 4 and terminals 5 is tightly held between the face cover 6 and the back cover 7. The peripheral edge A of the face cover 6 and the back cover 7 is hermetically sealed with a resin mold 10 formed by injection molding. The resin mold 10 has connector portions 10b in which the terminals 5 project out nakedly to allow connection with external electrical equipment.

Abstract: A composite of a metal and a resin, in which a shaped metal and a shaped thermoplastic resin are integrally joined by injection molding, and in which the perpendicular precision of the thermoplastic shaped body with respect to the shaped metal is improved, as well as a method for manufacturing the composite. A composite 40 of a metal and a resin is composed of a shaped metal 20 and a shaped thermoplastic resin that is integrally joined to this shaped metal 20 by injection molding. The shaped thermoplastic resin comprises a seat 42 and a boss 41 that protrudes from the seat 42. A runner 43 is provided which communicates with the seat 42 via two sprues and through which a molten thermoplastic resin that has been injected through an injection gate 45 flows into the boss 41 and the thermoplastic resin injected through the injection gate 45 flows through the sprues 47 to opposite locations of the boss 41 substantially uniformly, thereby filling the locations.

Abstract: The present invention is useful for achieving a reduction in weight and for attaining increased strength in not only electronic devices and domestic electric devices but also various parts and structures. As a pretreatment, a rib (3) is dipped in an aqueous solution of ammonia, hydrazine, a hydrazine derivative, or a water-soluble amine compound. A metal frame (2) is inserted into an injection mold for forming ribs (3) by injection molding. A thermoplastic resin composition is injected to the surface of the metal frame (2) by injection molding to form ribs (3). In the housing of a casing cover (1) thus formed, the metal frame (2) and the ribs (3) made of the thermoplastic resin composition are integrally bonded together. Thus, the housing improves strength and external appearance. Moreover, a complicated configuration and structure can be formed in the housing.

Abstract: The present invention provides electrical equipment for junction improved in sealing performance and reduced in size and weight, and also provides a method of manufacturing the same. A face cover 6 and a back cover 7 are press-formed from an aluminum alloy. An electrical component 2 including a board 3, electronic parts 4 and terminals 5 is tightly held between the face cover 6 and the back cover 7. The peripheral edge A of the face cover 6 and the back cover 7 is hermetically sealed with a resin mold 10 formed by injection molding. The resin mold 10 has connector portions 10b in which the terminals 5 project out nakedly to allow connection with external electrical equipment.

Abstract: A composite characterized by comprising an aluminum alloy shaped item having a surface roughness of 5 to 50 ?m or more, the surface provided with 1 ?m or less fine depressions or protrusions, and a thermoplastic resin composition composed mainly of a polyphenylene sulfide or polybutylene terephthalate resin whose average of lengthwise and crosswise linear expansion coefficients is in the range of 2 to 4×10?5° C.?1, the thermoplastic resin composition penetrating and anchored in the depressions or protrusions. The thermoplastic resin composition is not easily detached from the aluminum alloy shaped item. Thus, in, for example, electronic equipments and household electrical appliances, the advantage of metallic cage body can be reconciled with the advantage of synthetic resin structure. This composite can ensure high production efficiency and is suitable for mass production. Further, morphology and structure designing thereof can be accomplished freely.

Abstract: The present invention allows both the advantages of a metallic housing and those of a synthetic resin structure to be exhibited in electronic devices, home electrical devices, etc., and achieves high productivity and mass productivity and further enables a desired configuration and structure to be designed freely. As a pretreatment, a shaped aluminum alloy material is dipped in an aqueous solution of at least one selected from the group consisting of ammonia, hydrazine, and a water-soluble amine compound. A thermoplastic resin composition containing polyphenylene sulfide as a component is integrally bonded to the surface of the treated shaped aluminum alloy material by injection molding or other method. The molded article is a product made of the shaped aluminum alloy material and the thermoplastic resin composition containing PPS. Thus, the characteristic features of metal can be utilized in terms of mechanical strength and external appearance design.

Abstract: An outer casing of a non-aqueous electrolyte battery is capable of being mass-produced as well as thin and resistant to damage. The outer casing 4 comprises a casing body 4a and a cover 4b. After being internally packaged, a non-aqueous electrolyte battery 2, e.g. a lithium-ion polymer secondary battery, is sandwiched between the casing body 4a and the cover 4b, which are then joined together integrally. The cover 4b is formed from a film-shaped sheet material 4c of a synthetic resin to make the outer casing 4 thin. The casing body 4a and the cover 4b have a casing body outer peripheral frame 9 and a cover outer peripheral frame 10, respectively, formed by injection molding. Joint portions of the casing body 4a and the cover 4b have stepped portions 9a and 10a, respectively. The stepped portions ensure the mechanical strength against shock and impact. With this structure, the outer casing 4 is resistant to damage.

Abstract: A stamp, comprising a stamping case; a rail provided inside said stamping case, having a locus of making a U-turn on a stamping surface of a stamp; and a strip belt for sliding along said rail by being engaged with the rail, attached a plurality of stamping surfaces at predetermined intervals and provided with a tab protruding outside of said stamping case.

Abstract: A key-board type input mechanism suitable for inputting large quantity of data is provided to a portable information technology device having a pen-input type display device. A keyboard (33 or 35) of the present invention comprises a key top panel portion (12 or 17) on which a plurality of input key portions (12a or 18) that are pressed down when carrying out a key input are integrally formed, a coordinate position information generating portion (13) and contact portions (16 or 19) for changing loads generated by pressing each input key portion of the key top panel portion down into a vertical load, a load distribution portion (14 or 20) for distributing unnecessary loads other than the vertical load changed by the coordinate position information generating portion and the contact portions, by deformation under a pressure. The key top panel portion, coordinate position information generating portion, contact portion, and load distribution portion are layered.

Abstract: The present invention allows both the merits of a metallic housing and those of a synthetic resin structure to be exhibited in electronic devices, domestic electric devices, etc., and achieves high productivity and mass production capability as well as enables a desired configuration and structure to be designed freely. The present invention is useful for achieving a reduction in weight and for attaining increased strength in not only electronic devices and domestic electric devices but also various parts and structures.

Abstract: A pierceable stopper enhanced in elasticity so that the liquid in a container will not leak even after a hollow needle inserted into the container through the pierceable stopper has been removed therefrom and a method of producing the pierceable stopper are provided. A pierceable part (11) through which a hollow needle is inserted into a container (2) is molded from a thermoplastic synthetic resin elastic material. The pierceable part is heat-treated with heated air at a temperature of from 80 to 120° C. to remove the internal stress. The heat-treated pierceable part (11) is inserted into an injection mold (20, 21). A molten thermoplastic synthetic resin is injected into a cavity (26) corresponding to a stopper body (10), which is defined by the injection mold (20, 21) and the pierceable part (11), to form a pierceable stopper (5).

Abstract: A stamp, comprising a stamping case; a rail provided inside said stamping case, having a locus of making a U-turn on a stamping surface of a stamp; and a strip belt for sliding along said rail by being engaged with the rail, attached a plurality of stamping surfaces at predetermined intervals and provided with a tab protruding outside of said stamping case.