Abstract: In order to improve the sound pressure level and the sound quality of a piezoelectric electroacoustic transducing device without impairing the size, the productivity, the cost, and the like of the device, the piezoelectric electroacoustic transducing device 1 has: a frame 20; a piezoelectric vibrator 10 in which piezoelectric elements 12, 13 are bonded to a metal plate 11; and a support member 30 which supports a peripheral portion of the piezoelectric vibrator 10 on the frame 20, and which is made of a resin film such as a ring-like PET resin, and a mesh or embossed concave and convex structure is formed on the surface of the support member 30. While maintaining the external shape of the support member 30, the support member 30 is provided with a flexibility at which a large displacement of the piezoelectric vibrator 10 is not impeded.

Abstract: A grip member with an electric heater, in which the surface of a core body when a heater is installed is flat. A metal conductive plate, such as a SUS plate with a thickness of about 30 ?m formed in a belt-like shape, is spirally embedded along a flat groove section provided in a core body, the surface of the core body is made flat, and the metal conductive plate is fixed at both ends to the core body. An electric current is passed through the metal conductive plate to cause it to generate heat.

Abstract: In a piezoelectric electroacoustic transducing device which is to be incorporated in an electronic apparatus such as a portable telephone, and which is used as a sound source, the sound pressure of the low-frequency range is improved, the productivity is improved, and acoustic characteristics are stabilized. A piezoelectric electroacoustic transducing device 10 has: a frame 15; a piezoelectric vibrator 11 in which piezoelectric elements 12A, 12B are bonded to a metal plate 13; and a plate- and ring-like support member 14 which supports a peripheral portion of the piezoelectric vibrator 11 on the frame 15. A step 14C corresponding to the thickness of the metal plate 13 is disposed in the support member 14, and the metal plate 13 is adhered to the inside of the step 14C in an embedded manner.

Abstract: In order to improve the sound pressure level and the sound quality of a piezoelectric electroacoustic transducing device without impairing the size, the productivity, the cost, and the like of the device, the piezoelectric electroacoustic transducing device 1 has: a frame 20; a piezoelectric vibrator 10 in which piezoelectric elements 12, 13 are bonded to a metal plate 11; and a support member 30 which supports a peripheral portion of the piezoelectric vibrator 10 on the frame 20, and which is made of a resin film such as a ring-like PET resin, and a mesh or embossed concave and convex structure is formed on the surface of the support member 30. While maintaining the external shape of the support member 30, the support member 30 is provided with a flexibility at which a large displacement of the piezoelectric vibrator 10 is not impeded.

Abstract: In order to simultaneously realize both improvements of the acoustic performance of a bimorph piezoelectric electroacoustic transducing device and the productivity, in a bimorph piezoelectric vibrator 10 in which a disk-like first piezoelectric element 12 is bonded to a first principal surface 11a of a metal plate 11, and a disk-like second piezoelectric element 13 is bonded to a second principal surface 11b of the metal plate 11, the diameter R1 of the first piezoelectric element 12 is different from the diameter R2 of the second piezoelectric element 13. Furthermore, the diameter R2 of the second piezoelectric element 13 is made smaller than the diameter R1 of the first disk-like piezoelectric element 12, and a lead-wire soldering portion 14 is ensured on the second principal surface 11b of the metal plate 11 which is in the periphery of the second piezoelectric element 13.

Abstract: A flat panel speaker has a construction in which an actuator 10 vibrates a panel to radiate sound, the panel being held at a peripheral portion thereof on a frame by gaskets, wherein the gasket provided at a position opposite from a position at which the actuator is placed has a higher hardness than that of the gasket provided at another position. The side on which the gasket having the higher hardness is placed is a substantially fixed end to facilitate vibration of the panel, thereby improving sound quality.

Abstract: A molding method for resin long body to make a thin long body of resin. Molten resin is supplied to a spaced portion of a mold through a thin film gate after a resin well of enlarged hollow ring is filled with the molten resin through plural pin runners in advance.

Abstract: The present invention relates to an electric acoustic converter used as a speaker or a receiver of a mobile communication device such as a portable telephone or the like. In the electric acoustic converter according to the present invention, the size reduction and thinning of the thickness of the electric acoustic converter can be promoted by providing surface-like rear surface terminals 81 and 82 on the exposed surface 33 which is a rear surface of the yoke 3.

Abstract: A cord clip for fastening a cord attached to e.g. an earphone to an object such as a clothes is disclosed. The cord clip includes a clipping portion for clamping the object and a cord holding portion for holding the cord. The clipping portion is formed by a first annular portion having a discontinuity at a part thereof. The clipping portion is capable of clamping the object at a clamping portion thereof provided by a narrow gap formed by the discontinuity of the first annular portion by means of an elastic resilient force of the first annular portion. The cord holding portion is formed by a second annular portion having a discontinuity at a part thereof. The cord holding portion is capable of holding the cord therein by means of an elastic resilient force of the second annular portion. This elastic resilient force of the second annular portion is independent of that of the first annular portion. The first annular portion and the second annular portion are formed integrally in a single member.

Abstract: A molding method for resin long body to make a thin long body of resin. Molten resin is supplied to a spaced portion of a mold through a thin film gate after a resin well of enlarged hollow ring is filled with the molten resin through plural pin runners in advance.

Abstract: A hand-free apparatus having improved portability is disclosed. The apparatus includes an apparatus body including a transmitter and a receiver, an input/output cable connected with the transmitter and the receiver and extending outside from the apparatus body, a cable case incorporating a cable spool capable of taking up the cable and a retaining member capable of detachably retaining the apparatus body on the cable case. The apparatus body when retained by the retaining member extends along a peripheral face of the cable spool.

Abstract: A cord clip for fastening a cord attached to e.g. an earphone to an object such as a clothes is disclosed. The cord clip includes a clipping portion for clamping the object and a cord holding portion for holding the cord. The clipping portion is formed by a first annular portion having a discontinuity at a part thereof. The clipping portion is capable of clamping the object at a clamping portion thereof provided by a narrow gap formed by the discontinuity of the first annular portion by means of an elastic resilient force of the first annular portion. The cord holding portion is formed by a second annular portion having a discontinuity at a part thereof. The cord holding portion is capable of holding the cord therein by means of an elastic resilient force of the second annular portion. This elastic resilient force of the second annular portion is independent of that of the first annular portion. The first annular portion and the second annular portion are formed integrally in a single member.