Abstract: A corrugated tube with a longitudinal slit is loaded with electrical wires and the slit is locked. This process is effected using one device and in a single step. The corrugated tube is provided on its outer surface with circular peaks and troughs alternating along the axial direction. The portions facing one another across the slit are provided with convex and concave shapes along the circumference of the tube forming female and male locking portions. The male locking portion is inserted under the female locking portion, so as to lock the slit. An automatic locking device has a tubular guiding unit having a slanted tube part, and a tubular locking unit. The wires pass through the slanted tube part and the tubular locking unit. The tubular guiding unit is inserted into the slit, and the corrugated tube inside the tubular locking unit.

Abstract: A protective construction for a splice porion of several wires includes a transparent or semi-transparent cap made of resin with a mouth and a bottom end. The cap is filled with a transparent or semi-transparent hot melt. Exposed conductors in the spliced portion of the wires are welded and inserted into the hot melt such that the hot melt reaches the mouth of the cap. The transparent or semi-transparent nature of the cap and hot melt permits visual inspection of the wires in the cap.

Abstract: A corrugated tube with a longitudinal slit is loaded with electrical wires and the slit is locked. This process is effected using one device and in a single step. The corrugated tube is provided on its outer surface with circular peaks and troughs alternating along the axial direction. The portions facing one another across the slit are provided with convex and concave shapes along the circumference of the tube forming female and male locking portions. The male locking portion is inserted under the female locking portion, so as to lock the slit. An automatic locking device has a tubular guiding unit having a slanted tube part, and a tubular locking unit. The wires pass through the slanted tube part and the tubular locking unit. The tubular guiding unit is inserted into the slit, and the corrugated tube inside the tubular locking unit.

Abstract: A watertight construction is provided at ends of wires where a core convergent splice portion is formed. The construction includes a plurality of wires w which are tightened by taping or by a band at locations on the insulation coatings of the wires and near exposed cores 1 where a core convergent splice portion 1A is formed. An adhesive is caused to penetrate into and solidify in clearances between the cores 1 and the wires w in a portion between the core convergent splice portion 1A and the tightened portion where the clearances are narrowed, thereby adhering the cores 1 to each other and the wires w to each other. A heat-shrinkable tube 6 having a hot-melt layer 6a formed on its inner surface is mounted on the ends of the wires w, and clearances S3 between the insulation coatings 2 of the wires w and the tube 6 are filled by the melted and solidified hot-melt layer 6a.

Abstract: A corrugated tube has alternating ridge and trough shapes, viewed in longitudinal cross-section. The tube also has a slit along its longitudinal direction, thereby forming first and second portions flanking the slit. The first and second zones comprise a first and a second end portion of the ridge shapes, respectively. The first end portion forms a convex portion, while the second end portion forms a sequential convex and concave portion. Each portion extends from the slit side around the opposing circumferential directions, thereby forming female and male locking portions, respectively. When the male locking portions are inserted under the female locking portions, the convex portion of the first zone and the sequential convex and concave portion of the second zone are stacked and the slit is firmly locked.

Abstract: A corrugated tube with a longitudinal slit is loaded with electrical wires and the slit is locked. This process is effected using one device and in a single step. The corrugated tube is provided on its outer surface with circular peaks and troughs alternating along the axial direction. The portions facing one another across the slit are provided with convex and concave shapes along the circumference of the tube forming female and male locking portions. The male locking portion is inserted under the female locking portion, so as to lock the slit. An automatic locking device has a tubular guiding unit having a slanted tube part, and a tubular locking unit. The wires pass through the slanted tube part and the tubular locking unit. The tubular guiding unit is inserted into the slit, and the corrugated tube inside the tubular locking unit.

Abstract: A protective construction for a splice portion of a plurality of wires, comprising: the splice portion in which conductors exposed at end portions of the wires, respectively are welded to each other; a cylindrical cap which is made of resin and has a mouth and a bottom formed at its opposite ends, respectively; and hot melt which is poured into the cap so as to be filled to vicinity of the mouth of the cap when the splice portion has been inserted into the cap.

Abstract: The invention is designed to improve a radiation effect of a junction box so as to eliminate a limit in a current to be applied to busbars. A filler 15 of epoxy resin is injected into the interior of coupled lower and upper casings 1 and 3 through injection holes formed in suitable positions of the casings 1 and 3 so as to fill the interior with the filler 15. Since air layers within the coupled casings 1 and 3 can be eliminated by the filler 15, heat generated due to application of a current to busbars 11 can be efficiently radiated via the filler 15 and the casings 1 and 3, thereby improving a radiation effect within the junction box. Therefore, it is not necessary to limit a current applied to the busbars, and a relatively large current can be applied to the busbars.

Abstract: There is disclosed a ferrule including a sheath holding portion (11) and a core wire holding portion (12) which have inner diameters slightly greater than the outer diameters of a sheath portion (a) and a core wire portion (b) of a plastic fiber (A), respectively. The sheath holding portion (11) is provided with a flange portion (11a) which contacts a coiled spring when mounted in a connector housing, and the core wire holding portion (12) includes a large-diameter portion (13) at a front end thereof for receiving a front end portion of the core wire portion (b) of the plastic fiber (A) softened by hot plate treatment. The large-diameter potion (13) has a tapered inner surface such that an inner diameter thereof increases toward the front end, and the angle of flare thereof is 30 degrees.

Abstract: A cable side connector for connecting an optical fiber cable, which is partially usable as of both full lock type and friction type and does not cause a variation in optical coupling in either case, includes a housing 10 and a fixing member 20 which is securely accommodated in the housing 10. The fixing member 20 is formed with locking arms 25 which engage engaging projections of a module side connector when the cable side connector is coupled with the module side connector or the housing is formed with a friction lock projection. This connector can be used as of full lock type and of friction type only by replacing the fixing member. Further, since the housing 10 is used commonly for the both types, displacement of the ferrule which is required to have accuracy can be prevented.

Abstract: There is disclosed an optical fiber connector wherein, when housings (11, 13) arc connected to each other, slidable contact of pushing pieces (18) causes elastic elements (31) to be deformed to push down locking elements (32) and abutment of an opening effector (16) causes guide pins (33) to move upwardly to rotate a hood body (28) in an exposing direction, and when the housings (11, 13) are separated from each other, abutment of a closing effector (17) causes the guide pins (33) to move downwardly to rotate the hood body (28) in a covering direction, whereby an end surface of an optical fiber (14) is covered and exposed by the rotation of the hood body (28). The end surface of the optical fiber (14) is completely covered and protected while the elastic elements (31) are prevented from being subjected to plastic deformation, and the reliability of the end surface protection of the optical fiber (14) is increased. (FIG. 1).