Abstract: The present invention provides a speaker mounting structure that takes up less space and affords easier mounting. A mounting component 6 of a speaker 2 is provided to the rear pillar 3 of an automobile 1. A quarter inner panel 7 is provided on the interior IN side of this speaker mounting component 6, and a side body outer panel 8 is provided on the exterior OUT side, leaving a specific gap 9 in between. An extension panel 10 is attached on the exterior side OUT of the quarter inner panel 7. A through-hole 14 is formed in the quarter inner panel 7 and the extension panel 10, and the rear end 12 of the speaker 2 is inserted into the through-hole 14. As a result, the speaker 2 is moved further to the exterior OUT of the cabin, so the trim piece 16 does not protrude as far into the interior IN and rearward visibility is improved.

Abstract: A shaft member 1 and an outer peripheral member 2 disposed on the outer periphery of the shaft member 1 are joined together by splines 3 through which the teeth 31 of the shaft member 1 and the teeth 32 of the outer peripheral member 2 are fitted together. At one axial end of each spline 3, a trough 31 in the tooth 31 of the shaft member 1 is diametrically increased to provide a diametrically increased region S1. In this diametrically increased region S1, there is defined a fit region F for the tooth 31 of the shaft member 1 and the tooth 32 of the outer peripheral member 2.

Abstract: The power transmission shaft 12 is made by applying induction hardening to carbon steel with hardening ratio in a range from 0.25 to 0.50. For the carbon steel, one containing 0.39 to 0.49% of C, 0.4 to 1.5% of Si, 0.4 to 1.0% of Mn, 0.025% or less S, 0.02% or less P and 0.01 to 0.1% of Al by weight as the basic components, with the rest comprising Fe and inevitable impurities is used. This makes it possible to achieve higher strength and lighter weight of the power transmission shaft.

Abstract: In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space 19, an inlet side porous permeable member 20 communicating in a refrigerant flow direction, an orifice 23, an outlet side foamed metal 25, and an outlet noise eliminating space 27, and a multi-directional valve, a gas/liquid two-phase refrigerant is caused to pass through the throttle section.

Abstract: A sensor material for measuring physical parameters capable of configuring a sensor capable of directly measuring a high value of physical parameters such as high stress or high pressure without employing a pressure resistance container. The sensor material for measuring static and dynamic physical parameters includes a matrix made of an electrically insulating ceramic material, and piezoresistance materials which are dispersed in the matrix so as to be electrically continuous to each other.

Abstract: A shaft member 1 and an outer peripheral member 2 disposed on the outer periphery of the shaft member 1 are joined together by splines 3 through which the teeth 31 of the shaft member 1 and the teeth 32 of the outer peripheral member 2 are fitted together. At one axial end of each spline 3, a trough 31 in the tooth 31 of the shaft member 1 is diametrically increased to provide a diametrically increased region S1. In this diametrically increased region S1, there is defined a fit region F for the tooth 31 of the shaft member 1 and the tooth 32 of the outer peripheral member 2.

Abstract: The present invention provides a speaker mounting structure that takes up less space and affords easier mounting. A mounting component 6 of a speaker 2 is provided to the rear pillar 3 of an automobile 1. A quarter inner panel 7 is provided on the interior IN side of this speaker mounting component 6, and a side body outer panel 8 is provided on the exterior OUT side, leaving a specific gap 9 in between. An extension panel 10 is attached on the exterior side OUT of the quarter inner panel 7. A through-hole 14 is formed in the quarter inner panel 7 and the extension panel 10, and the rear end 12 of the speaker 2 is inserted into the through-hole 14. As a result, the speaker 2 is moved further to the exterior OUT of the cabin, so the trim piece 16 does not protrude as far into the interior IN and rearward visibility is improved.

Abstract: A power transmission shaft using the constant velocity joint is manufactured by applying induction hardening to graphite steel thereby to harden the surface layer and form a 2-phase structure of ferrite and martensite in the core thereof. The graphite steel contains 0.35 to 0.70% of C, 0.4 to 2.0% of Si, 0.3 to 1.5% of Mn, 0.025% or less S, 0.02% or less P, 0.01 to 0.1% of Al, 0.001 to 0.004% of B and 0.002 to 0.008% of N by weight as the basic components, with the rest comprising Fe and inevitable impurities.

Abstract: The power transmission shaft 12 is made by applying induction hardening to carbon steel with hardening ratio in a range from 0.25 to 0.50. For the carbon steel, one containing 0.39 to 0.49% of C, 0.4 to 1.5% of Si, 0.4 to 1.0% of Mn, 0.025% or less S, 0.02% or less P and 0.01 to 0.1% of Al by weight as the basic components, with the rest comprising Fe and inevitable impurities is used. This makes it possible to achieve higher strength and lighter weight of the power transmission shaft.

Abstract: The power transmission shaft 12 is made by applying induction hardening to carbon steel with hardening ratio in a range from 0.25 to 0.50. For the carbon steel, one containing 0.39 to 0.49% of C, 0.4 to 1.5% of Si, 0.4 to 1.0% of Mn, 0.025% or less S, 0.02% or less P and 0.01 to 0.1% of Al by weight as the basic components, with the rest comprising Fe and inevitable impurities is used. This makes it possible to achieve higher strength and lighter weight of the power transmission shaft.

Abstract: The present invention provides a sensor material for measuring physical parameters capable of configuring a sensor capable of directly measuring a high value of physical parameters such as high stress or high pressure without employing a pressure resistance container.

Abstract: A piezoelectric ceramic composition, having a tetragonal perovskite structure and represented by a general formula PbaSrb(ZrcTidSbeMnf)O3 wherein Pb and Sr are assumed to occupy A site, Zr, Ti, Sb and Mn are assumed to occupy B site, and a molar ratio of A site/B site atoms of (a+b)/(c+d+e+f) is more than 1.00 to 1.03, preferably 0.01 to 0.03.

Abstract: A refrigerating cycle apparatus including an inverter driven compressor with controllable speed of rotation, a four-way valve, an indoor heat exchanger, a pressure reducing device, outdoor heat exchanger, a defrosting condition detector for detecting a frosting state of the outdoor heat exchanger in a heating operation, a defrosting operation controller for carrying out a defrosting operation based on a detection signal from the defrosting condition detector and having a minimum operable frequency controller for controlling a minimum operable frequency for the compressor on restarting after completion of the defrosting operation and/or a starting speed controller for controlling a starting speed for the compressor based on a detection signal from the defrosting condition detector on restarting after completion of the defrosting operation in order to provide proper lubrication after a defrost operation.

Abstract: In a refrigerant circulating apparatus, a liquid accumulating container for allowing oil droplets to flow out in suspended form is connected between a condenser and a pressure reducing device. Thus, refrigerating machine oil which flowed out from a compressor can be reliably returned to the compressor, and proper lubricating and sealing functions can be maintained for the compressing elements.

Abstract: A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.

Abstract: This invention provides a piezoelectric ceramic composition having large field-induced strain under high compressive stress, small temperature dependence of strain, and high energy conversion efficiency even at high temperatures. The composition is represented by;(Pb.sub.1-(3X/2)-(U/2) La.sub.X)((Zr.sub.Y Ti.sub.1-Y).sub.1-Z-U (Mg.sub.1/3 Nb.sub.2/3).sub.Z Nb.sub.U)O.sub.3where 0<X<2/3; 0<U<1; 0.53-(Z/3).ltoreq.Y.ltoreq.0.56-(Z/3); and 0.02.ltoreq.Z.ltoreq.0.10. In this composition, a part of the crystals of PZT has been substituted by La and Nb and further by a suitable amount of PMN. These substituents play complementary roles to each other to impart aforementioned excellent properties to the ceramic composition.

Abstract: A joined assembly of a ceramic member and a metallic member having a hollow cylindrical portion which is open at one end thereof, and closed at the other end, or bottom thereof. The ceramic member has a portion fitted in the cylindrical portion in such a way that any stress acting axially upon the surface of the ceramic member may be reduced at least in the vicinity of the open end of the cylindrical portion. The two members are joined together by shrinkage fitting with at least one brazing material filling the clearance between the two members, or by chemical bonding.

Abstract: A chain drive system is provided having a metallic chain and a metallic sprocket, both meshing with each other. The sprocket is constituted by a double ply or pair of members of the same radius, each having a number of teeth formed at the same pitch on the outer peripheries thereof. An elastic member is held between at least the tooth portions in the chain-mating portions of these ply members. A part of the elastic member projects radially outwardly from at least the bases of the root portions of the split-member defined sprocket to function as elastomeric buffers.The sprocket may include roller portions capable of making meshing contact with the sprocket teeth. A shaft portion supports each roller portion. Elastic rings member may be formed round the shaft portions so as to project radially outwards beyond the outer periphery of the roller portions.Portions of the elastic member may project transversely through sprocket wall openings and merge with buffer rims.