Abstract: A terminal crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for placing an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a press-deforming portion having a generally arch-shape formed of two arc-shaped surfaces which are opposed to the anvil. The anvil and the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire placed on the metal terminal. The shape of the crimper satisfies a formula, Index a=c·cos ?, where c represents a length of the arc-shaped surface of the crimper, and ? represents an angle formed by a tangential line to the arc-shaped surface at a central portion of the crimper and a vertical line.

Abstract: A crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for mounting an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a groove portion being opposed to a supporting portion of the anvil. An inner surface of the groove portion of the anvil and a terminal support face of the supporting portion of the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire mounted on the metal terminal. A width of the groove portion of the crimper is not more than 1.0 mm. The terminal support surface of the anvil is formed into a concavely curved surface in which a depth of the concavely curved surface is not smaller than 0.06 mm and is not larger than 0.17 mm in a cross-section of the anvil perpendicular to an axis direction of the electric wire.

Abstract: A metal terminal includes a base plate portion for placing an electric wire thereon and a pair of crimping piece portions which extend upwardly respectively from opposite side edges of the base plate portion for press-contacting the electric wire. Each of the crimping piece portions has a distal end portion and a body portion such that a thickness of the each of crimping piece portions is tapered toward a distal end surface of the distal end portion from the body portion. A thickness of a distal end of the distal end portion relative to a board thickness T of the body portion of the each of crimping piece portions is not smaller than ?T and is less than ½T. An exterior angle of an angle formed by the distal end surface of the distal end portion and a tapered surface of the distal end portion is 60° to 30°.

Abstract: An intermediate portion of an insulating sheath of a coaxial cable is removed, and a first insulating sheath portion is drawn toward a second insulating sheath portion, so that a braid is projected into an annular shape outwardly from an interval between opposed ends of the first and second insulating sheath portions to form an annular projecting braid portion, and this annular projecting braid portion is fixed so as to be connected to a portion (that is, a braid fixing portion) of a coaxial cable shielding terminal for connection to an end portion of the coaxial cable. This connecting and fixing operation is effected by press-contacting or press-clamping.

Abstract: A water cutoff structure of a covered wire comprising an upper side member and a lower side member for carrying out water cutoff to the covered wire by sandwiching a covered wire constituted by covering core lines by a pair of water cutoff members made of a resin respectively provided at the upper side member and the lower side member to be subjected to ultrasonic welding, in which the lower side member of the water cutoff structure is provided with a pair of locking portions and the pair of locking portions are respectively fitted to a pair of locking portions provided to correspond to the upper side member. Ultrasonic vibration energy is transmitted to concentrate on a welded portion.

Abstract: In a shield-processing structure of a shielded cable 1, the shielded cable 1 and an earth cable 2 are held between two resin members 3 and 3, and ultrasonic vibration is applied to the resin members 3 and 3 while exerting a compressive force between the resin members 3 and 3, thereby forming a shield-processed portion. A shielded cable-receiving groove 15 and an earth cable-receiving groove 16 are formed in a joint surface 3a of each of the resin members 3 and 3, and earth cable-holding projections 17 are formed on each of the joint surfaces 3a, and is disposed adjacent to the shielded cable-receiving groove 15, and projects into the earth cable-receiving groove 16. Opposite end portions 17a and 17a of a distal end surface of each of the earth cable-holding projections 17 are higher than a central portion 17b thereof.

Abstract: In a water cutoff structure of a covered wire, a water cutoff portion of an upper side member of a water cutoff member is formed in a recessed shape which is a shape of a curved face along an outer shape of the covered wire. Further, a water cutoff portion of a lower side member is formed in a projected shape in correspondence with the water cutoff portion in the recessed shape and the projected shape is a shape of a curved face in a projected shape in correspondence with the shape of the curved face of the water cutoff portion in the recessed shape.

Abstract: In a shielded structure of a flat shielding electric wire, the flat shielding electric wire includes a plurality of shielding cores, an inner insulating sheathe covering each of the plurality of shielding cores, a conductive covering member covering the inner insulating sheathes, and a first outer insulating sheathe covering the conductive covering member. A pair of resin members sandwiches the flat shielding electric wire therebetween. A coating electric wire is provided between the flat shielding electric wire and one of the pair of resin members. The coating electric wire includes a conductive wire and a second outer insulating sheathe covering the conductive wire. The first outer insulating sheathe and the second outer insulating sheathe are fused by ultrasonic excitation so that the conductive wire is electrically connected to a part of the conductive covering member.

Abstract: In a shielding structure of a shielding electric wire in which the shielding electric wire and a ground wire are interposed between two resin members, and a compressive force is caused to act on the resin members and an ultrasonic wave is simultaneously applied to fuse the resin portions, thereby forming a shielded portion, a protruded portion 20 is provided on one of junction faces of the two resin members and a hole 21 including a protrusion inserting portion 21a for inserting the protruded portion 20 and a resin inflow portion 21b provided in an inner position from the protrusion inserting portion 21a and having a smaller width than a width of the protrusion inserting portion 21a is provided on the other junction face, and step faces at both sides on a boundary between the protrusion inserting portion 21a and the resin inflow portion 21b in the hole 21 are formed to be a pair of inclined faces 21c and 21c.

Abstract: In a shield-processing structure of a shielded cable 1, the shielded cable 1 and an earth cable 2 are held between two resin members 3 and 3, and ultrasonic vibration is applied to the resin members 3 and 3 while exerting a compressive force between the resin members 3 and 3, thereby forming a shield-processed portion. A shielded cable-receiving groove 15 and an earth cable-receiving groove 16 are formed in a joint surface 3a of each of the resin members 3 and 3, and earth cable-holding projections 17 are formed on each of the joint surfaces 3a, and is disposed adjacent to the shielded cable-receiving groove 15, and projects into the earth cable-receiving groove 16. Opposite end portions 17a and 17a of a distal end surface of each of the earth cable-holding projections 17 are higher than a central portion 17b thereof.

Abstract: A connecting method of connecting covered wires with each other and recessed resinous tips used in the method are provided. In the method, it is executed at the first step to put a connecting part constituted by a shield wire and a ground wire between a first resin tip and a second resin tip. The first resin tips has, around the connecting part, first recessed parts for accommodating the molten cover of the shield wire and second recessed parts for accommodating the molten cover of the ground wire. The second resin tip has second recessed parts formed for accommodating the molten cover of the ground wire.

Abstract: In a shielding structure of a shielding electric wire in which the shielding electric wire and a ground wire are interposed between two resin members, and a compressive force is caused to act on the resin members and an ultrasonic wave is simultaneously applied to fuse the resin portions, thereby forming a shielded portion, a protruded portion 20 is provided on one of junction faces of the two resin members and a hole 21 including a protrusion inserting portion 21a for inserting the protruded portion 20 and a resin inflow portion 21b provided in an inner position from the protrusion inserting portion 21a and having a smaller width than a width of the protrusion inserting portion 21a is provided on the other junction face, and step faces at both sides on a boundary between the protrusion inserting portion 21a and the resin inflow portion 21b in the hole 21 are formed to be a pair of inclined faces 21c and 21c.

Abstract: The shield processing structure for a flat shielded cable includes: a flat shielded cable including two shielded cores, a drain wire, an aluminum foil shield member for covering the two shielded cores and the drain wire, and an insulating outer jacket for covering the aluminum foil shield member; and resin members for clamping the flat shielded cable with joining surfaces. The flat shielded cable is clamped between the pair of resin members, and a grounding wire is interposed between the flat shielded cable and the resin member. In this state, ultrasonic vibration are applied across the pair of resin members, whereby at least insulating outer jackets are melted and scattered, and a conductor of the grounding wire, on the one hand, and the grounding wire-use contact portion of aluminum foil shield member and the drain wire are brought into contact with each other.

Abstract: A water cutoff structure of a covered wire according to the invention is characterized in a water cutoff structure of a covered wire comprising an upper side member and a lower side member for carrying out water cutoff to the covered wire by sandwiching a covered wire constituted by covering core lines by a pair of water cutoff members made of a resin respectively provided at the upper side member and the lower side member to be subjected to ultrasonic welding, in which the lower side member of the water cutoff structure is provided with a pair of locking portions and the pair of locking portions are respectively fitted to a pair of locking portions provided to correspond to the upper side member. According to the structure, ultrasonic vibration energy is transmitted to concentrate on a welded portion. Therefore, ultrasonic wave energy is efficiently transmitted and time period dissipated in welding is shortened.

Abstract: In a water-stop structure of a sheathed wire of the invention, a water-stop member includes an upper member and a lower member, and the upper member has a recess disposed above water-stop portions so that ultrasonic vibrations of an ultrasonic horn can be transmitted to the water-stop portions from a region closer to the water-stop portions. The ultrasonic horn has a protrusion which is formed on a lower surface thereof, and can be fitted to the recess in the upper member. In this sheathed wire water-stop structure, vibrations of the ultrasonic horn can be transmitted to the water-stop portions from the region closer to the water-stop portions, and therefore the ultrasonic vibrations can be efficiently transmitted, so that the welding time can be reduced, and besides the production cost can be reduced.

Abstract: In a water cutoff structure of a covered wire according to the invention, a water cutoff portion of an upper side member of a water cutoff member is formed in a recessed shape which is a shape of a curved face along an outer shape of the covered wire. Further, a water cutoff portion of a lower side member is formed in a projected shape in correspondence with the water cutoff portion in the recessed shape and the projected shape is a shape of a curved face in a projected shape in correspondence with the shape of the curved face of the water cutoff portion in the recessed shape.

Abstract: A plurality of shielded core wires has a first diameter. A conductive cover member covers the shielded core wires. A first insulating sheath covers the conductive cover member. A pair of resin members, each formed with a groove having a semi-ellipsoidal shape are thermally integrated with each other for forming an ellipsoidal through hole while accommodating the first insulating sheath therein. A major axis length of a cross section of the ellipsoidal through hole is substantially identical with a length obtained by adding each first diameter, twice a thickness of the conductive cover member and twice a thickness of the first insulating sheath. A minor axis length of a cross section of the ellipsoidal through hole is substantially identical with by adding the first diameter, twice the thickness of the conductive cover member and twice the thickness of the first insulating sheath.

Abstract: In at least one shielded core wire, a first conductive core wire is covered with a first insulating sheath. A conductive foil covers the at least one shielded core wire. A second insulating sheath covers the conductive foil. In a branch wire, a second conductive core wire is covered with a third insulating sheath. A part of the second insulating sheath and a part of the third insulating sheath are thermally fused so that the conductive foil and the second conductive core wire are electrically connected.

Abstract: The shield processing structure for a flat shielded cable includes: a flat shielded cable including two shielded cores, a drain wire, an aluminum foil shield member for covering the two shielded cores and the drain wire, and an insulating outer jacket for covering the aluminum foil shield member; and resin members for clamping the flat shielded cable with joining surfaces. The flat shielded cable is clamped between the pair of resin members, and a grounding wire is interposed between the flat shielded cable and the resin member. In this state, ultrasonic vibration are applied across the pair of resin members, whereby at least insulating outer jackets are melted and scattered, and a conductor of the grounding wire, on the one hand, and the grounding wire-use contact portion of aluminum foil shield member and the drain wire are brought into contact with each other.

Abstract: A connecting method of connecting covered wires with each other and recessed resinous tips used in the method are provided. In the method, it is executed at the first step to put a connecting part constituted by a shield wire and a ground wire between a first resin tip and a second resin tip. The first resin tip has, around the connecting part, first recessed parts for accommodating the molten cover of the shield wire and second recessed parts for accommodating the molten cover of the ground wire. The second resin tip has second recessed parts formed for accommodating the molten cover of the ground wire.