Abstract: A physical quantity detector, such as a pressure sensor and a load sensor, includes a cylindrical part of which one end is closed with a strain generating part and a sensor part formed on the strain generating part. The cylindrical part is produced by melting an alloying material having a composition capable of yielding an amorphous alloy, injecting the resultant molten alloy into a metal mold, and cooling the molten alloy in the metal mold to confer amorphousness on the alloy. The metal mold includes a split mold having at least two split parts for forming a cavity and an insert pin to be inserted into the cavity so as to define the inner configuration of the cylindrical part, or further an insert core to be inserted into the mold so as to form the surface of the cavity corresponding to the surface of the strain generating part.

Abstract: In the manufacture of a physical quantity detector, such as a pressure sensor and a load sensor, comprising a cylindrical part of which one end is closed with a strain generating part and a sensor part formed on the strain generating part, the cylindrical part mentioned above is produced by melting an alloying material having a composition capable of yielding an amorphous alloy, injecting the resultant molten alloy into a metal mold, and cooling the molten alloy in the metal mold to confer amorphousness on the alloy. The metal mold is composed of a split mold having at least two split parts for forming a cavity and an insert pin to be inserted into the cavity so as to define the inner configuration of the cylindrical part, or further an insert core to be inserted into the mold so as to form the surface of the cavity corresponding to the surface of the strain generating part.

Abstract: An optical connector comprises a mount having an accommodating portion and an optical connector ferrule. The mount and the outer surface of the optical connector ferrule to be brought into contact therewith are made of the same kind of material, thereby securing the good weldability therebetween. In one embodiment, both the mount and the ferrule are made of an amorphous alloy. In another embodiment, the mount is made of a metal, for example stainless steel, and the ferrule comprises a body made of an amorphous alloy and a surface part covering the outer surface of the body is made of the same kind of material as the mount, i.e. a metal such as stainless steel.

Abstract: An optical connector comprises a mount having an accommodating portion and an optical connector ferrule. The mount and the outer surface of the optical connector ferrule to be brought into contact therewith are made of the same kind of material, thereby securing the good weldability therebetween. In one embodiment, both the mount and the ferrule are made of an amorphous alloy. In another embodiment, the mount is made of a metal, for example stainless steel, and the ferrule comprises a body made of an amorphous alloy and a surface part covering the outer surface of the body is made of the same kind of material as the mount, i.e. a metal such as stainless steel.