Abstract: A totally enclosed type main drive motor for a vehicle includes a stator core arranged on an inner circumference of an outer casing frame, a bracket arranged on one end of the outer casing frame to have a bearing built-in, a housing arranged on the other end of the outer casing frame to have a bearing built-in, a rotor shaft having its both ends supported by the respective bearings, a rotor core arranged on the rotor shaft, a fan arranged on one end of the rotor shaft, openings formed in both axial ends of a peripheral wall of the outer casing frame, connective air ducts arranged outside the peripheral wall so as to communicate with the openings and a cooler for connecting these connective air ducts with each other and also releasing heat of air flowing in the connective air ducts to outside air. The outer casing frame is attached to the vehicle so that a central axis of the outer casing frame extends horizontally and intersects with a traveling direction of the vehicle at right angles.

Abstract: An inventive mold is adapted to adhere skin materials having a boundary portion and a resin to each other, and is provided with a resin blocking member which is so embedded as to extend substantially along the boundary portion of the skin materials placed in the mold, and a movable member for projecting the resin blocking member from a molding surface. If such a mold is used, a flow of the resin supplied into the mold can be controlled by projecting the resin blocking member to thereby control an arrival timing of the resin at the boundary portion. Thus, displacement of the boundary portion and wrinkling can be securely prevented from occurring.

Abstract: Disclosed is a method for producing a foamed article by injecting a molten polypropylene resin containing a foaming agent between cavity surfaces of a pair of a female and male molds having the cavity surfaces, wherein the molten polypropylene resin is injected between the cavity surfaces at an injection rate of from 200 cc/sec to 1200 cc/sec and a quotient of the longest flow distance of the molten resin between the cavity surfaces during a molding process divided by an injection time is 200 mm/sec or less.

Abstract: Disclosed is a multilayer molded article comprising a thermoplastic resin substrate and at least two kinds of skin materials laminated on a surface of the substrate, the at least two kinds of skin materials including a pair of skin materials adjacent to each other wherein the pair of skin materials are folded toward the substrate to have folded edges which separate the substrate at least partly to define two portions, wherein the separated portions of the substrate are combined together via a plurality of ribs of the thermoplastic resin molded integrally with the substrate, the ribs enclosing therein a part of the folded edges of the pair of skin materials.

Abstract: A stator frame (1) comprises: a housing (1m) whereof a modified tubular body mounted on the outer peripheral surface of a stator core (2) and that is virtually recessed at two locations in the direction of the rotary axis of a rotor; a cooling section (1n) that is integrally formed with one recess of this housing (1m) and wherein a passage (23) for the airflow generated by a circulating fan (11) is formed by forming a prescribed gap with respect to the outer peripheral surface of the stator core (2) and comprising heat-radiating fins (21); a foot (1o) that is integrally formed with another recess of this housing (1m) and wherein a passage (24) for the airflow generated by the circulating fan (11) is formed by forming a prescribed gap with respect to the outer peripheral surface of the stator core (2) and comprising heat-radiating fins (22); and a mounting section (1p).

Abstract: An inventive mold is adapted to adhere skin materials having a boundary portion and a resin to each other, and is provided with a resin blocking member which is so embedded as to extend substantially along the boundary portion of the skin materials placed in the mold, and a movable member for projecting the resin blocking member from a molding surface. If such a mold is used, a flow of the resin supplied into the mold can be controlled by projecting the resin blocking member to thereby control an arrival timing of the resin at the boundary portion. Thus, displacement of the boundary portion and wrinkling can be securely prevented from occurring.

Abstract: A coating composition containing a zirconium compound and a silicon compound is applied on a conductor 1 and baked to develop a ceramic insulating coating 2. A bonding agent made by dissolving a polyamide resin or a polyimide resin into an organic agent is then applied on the ceramic insulating coating 2 and baked to develop a fusible coating 3. This produces a self-fusible ceramic insulation coated wire which can retain the favorable properties of coil at high temperatures. Also, it can be used as windings such as high-power loudspeaker voice coils.

Abstract: Disclosed is a method for producing a thermoplastic resin molded article, the method comprising: providing a mold comprising paired female and male dies each having a cavity surface, the cavity surfaces being opposite each other, supplying a predetermined amount of thermoplastic resin in a molten state between the cavity surfaces, making the female and male dies approach relatively each other until a cavity having predetermined dimensions is formed by the cavity surfaces, wherein the relative approach of the female and male dies is started during or after the supply of the thermoplastic resin and is finished after the supply of the thermoplastic resin, and compressing the thermoplastic resin in the cavity via the female and male dies to fill a predetermined region of the cavity with the thermoplastic resin, wherein the mold closure speed is specially controlled.

Abstract: An inventive mold is adapted to adhere skin materials having a boundary portion and a resin to each other, and is provided with a resin blocking member which is so embedded as to extend substantially along the boundary portion of the skin materials placed in the mold, and a movable member for projecting the resin blocking member from a molding surface. If such a mold is used, a flow of the resin supplied into the mold can be controlled by projecting the resin blocking member to thereby control an arrival timing of the resin at the boundary portion. Thus, displacement of the boundary portion and wrinkling can be securely prevented from occurring.

Abstract: A speaker device and associated method for producing a speaker device that includes a voice coil and a radiant layer made of a radiant energy emissive material provided on a surface of the voice coil for suppressing the heat generated at the voice coil while simultaneously improving the input durability of the speaker device.

Abstract: A molded foam resin, surface of which can be designed easily at low cost, a process for forming a molded foam resin, and a speaker diaphragm made of molded foam resin are provided, in which a molded foam resin is formed by injection molding of foaming agent-containing resin and has a foamed zone having a three layer-structure consisting of a foamed layer inside and a non-foamed layer outside and a non-foamed zone having a single layer-structure consisting of a non-foamed layer.

Abstract: A coating composition containing a zirconium compound and a silicon compound is applied on a conductor 1 and baked to develop a ceramic insulating coating 2. A bonding agent made by dissolving a polyamide resin or a polyimide resin into an organic agent is then applied on the ceramic insulating coating 2 and baked to develop a fusible coating 3. This produces a self-fusible ceramic insulation coated wire which can retain the favorable properties of coil at high temperatures. Also, it can be used as windings such as high-power loudspeaker voice coils.

Abstract: A propylene polymer composition of high melt tension, which is especially favorable for foam moldings of uniform thickness, and foam moldings thereof having a uniform thickness, are obtained by melt-kneading a polymer mixture of a specific ethylene polymer (A) and a specific olefin multi-stage polymer (B) to satisfy the following formula: Log(MS)>0.91−0.

Abstract: The present invention provides a method for producing a multilayer molded article comprising a step of supplying a skin material having at least a foam layer between a pair of a male mold half and a female mold half, supplying a molten thermoplastic resin between the skin material and the molding surface of one of the male mold half and the female mold half, a step of laminating the skin material onto at least a part of the surface of a substrate made from the thermoplastic resin and a step of forming a recess in the skin material laminating region, wherein the thickness, t (mm), of the foam layer in the skin material before molding is 0.6 R or less wherein R represents the minimum radius (mm) of the recess on the skin material laminating side of the substrate in the skin material laminating region of the multilayer molded article.

Abstract: The present process includes a mold for producing a thermoplastic resin molded article, comprising paired sliding female and male mold members, which mutually slide at the time of mold closing. A product-forming portion and a non-product-forming portion are provided in the cavity of the mold, the mold further including a resin-supplying opening. A gate portion located at a boundary between the product-forming portion and non-product-forming portion interconnects the two portions. At closing of the mold, the width of the gate at the product-forming side is less than the thickness of the formed product, and stepwise or continuously widens toward the non-product-forming side. Using this mold, a thermoplastic resin molded article, with or without a laminated skin material, can be molded in good efficiency and low cost, further having a non-product-forming portion, which can be readily trimmed from the product-forming portion.

Abstract: The present invention provides a process for producing a multilayer molded article having a skin material laminated with at least a part of the surface of a substrate formed of a thermoplastic resin. The process has steps of supplying a skin material to between a pair of mold halves and supplying a molten thermoplastic resin to between the skin material and the molding surface of one of the mold halves. The process uses, as the skin material, a skin material which has at least a foamed urethane layer and a nonfoamed backing layer wherein the product of the density, &rgr; (g/cm3), of the foamed urethane layer and the weight, W (g/m2), of the backing layer is not less than 2. This process prevents crush of the foamed urethane layer and can produce a multilayer molded article with good appearance.

Abstract: Disclosed is a multilayer molded article comprising a thermoplastic resin substrate and at least two kinds of skin materials laminated on a surface of the substrate, the at least two kinds of skin materials including a pair of skin materials adjacent to each other wherein the pair of skin materials are folded toward the substrate to have folded edges which separate the substrate at least partly to define two portions, wherein the separated portions of the substrate are combined together via a plurality of ribs of the thermoplastic resin molded integrally with the substrate, the ribs enclosing therein a part of the folded edges of the pair of skin materials.

Abstract: A propylene polymer composition of high melt tension, which is especially favorable for foam moldings of uniform thickness, and its foam moldings of uniform thickness are obtained by melt-kneading a polymer mixture of a specific ethylene polymer (A) and a specific olefin multi-stage polymer (B) to satisfy the following formula:

Abstract: An inventive mold is adapted to adhere skin materials having a boundary portion and a resin to each other, and is provided with a resin blocking member which is so embedded as to extend substantially along the boundary portion of the skin materials placed in the mold, and a movable member for projecting the resin blocking member from a molding surface. If such a mold is used, a flow of the resin supplied into the mold can be controlled by projecting the resin blocking member to thereby control an arrival timing of the resin at the boundary portion. Thus, displacement of the boundary portion and wrinkling can be securely prevented from occurring.

Abstract: A process for producing a multilayer molded article in which a surface of a thermoplastic resin substrate is partly or entirely laminated with a skin material.