초록 ▼

A waterproof connector configured such that parts constituting the connector can be assembled together in a work site and can be assembled easily. The waterproof connector is provided with a terminal (40) joined by crimping to a conductor (121) of a cable (12), a retaining sleeve (60) mounted so as

A waterproof connector configured such that parts constituting the connector can be assembled together in a work site and can be assembled easily. The waterproof connector is provided with a terminal (40) joined by crimping to a conductor (121) of a cable (12), a retaining sleeve (60) mounted so as to extend from the vicinity of the rearward end of the terminal (40) and across an outer casing (122) of the cable (12), a body housing (70) having formed therein a tubular bore (71) for containing the retaining sleeve (60), and a fastening nut (90) mounted on the rearward end side of the body housing (70). When a substantially half of the forward end side of the retaining sleeve (60) is inserted into the tubular bore (71) in the body housing (70) and the fastening nut (90) is engaged with a male thread portion (76) formed on the exterior of the tubular bore (71), an end of the retaining sleeve (60) is reduced in diameter by being pressed by constricting tapered portions (75, 92), and as a result, the terminal (40) and the outer casing (122) of the cable (12) are held watertight.

대표청구항 ▼

1. A water-proof connector comprising: a terminal,a retaining sleeve,a main body housing, anda fastening nut, whereinthe terminal has an elongate rod-like or tubular shape and its rearward end is compression bonded to a conductor of a cable, and the terminal has, on an outer periphery in a vicinity

1. A water-proof connector comprising: a terminal,a retaining sleeve,a main body housing, anda fastening nut, whereinthe terminal has an elongate rod-like or tubular shape and its rearward end is compression bonded to a conductor of a cable, and the terminal has, on an outer periphery in a vicinity of the rearward end, a plurality of projection portions;the retaining sleeve is mounted in the vicinity of the rearward end of the terminal and across the outer casing of the cable, on the outside thereof;the main body housing has a tubular bore receiving the retaining sleeve and substantially half of the forward end of the retaining sleeve is inserted into the tubular bore;a male threaded portion is formed on the exterior of the tubular bore in the main body housing;the fastening nut has a female threaded portion formed on the inside thereof and is mounted onto the main body housing while threadably engaging the female threaded portion with the male threaded portion;the retaining sleeve includes, in the forward end and the rearward end thereof, respective axial score lines, and includes on a tubular forward end portion thereof, hook-shaped portions protruding towards an axial center, the hook-shaped portions being engaged with the projection portions of the terminal;constricting tapered portions clamping the score lines in the rearward end of the retaining sleeve are provided in an inner periphery of the fastening nut; andthe rearward end of the retaining sleeve is subjected to deformation in a diameter-reducing direction so as to be gripped by the fastening nut. 2. A water-proof mono-axial connector provided at the end of a cable, either as a plug having a male terminal or as a receptacle having a female terminal, comprising: a terminal of an elongate rod-like or tubular shape having its rearward end compression bonded to a conductor of the cable;a retaining sleeve mounted in the vicinity of the rearward end of the terminal and across the outer casing of the cable, on the outside thereof;a main body housing having formed therein a tubular bore that receives the retaining sleeve;a fastening nut mounted at the rearward end of the main body housing,whereinsubstantially half of the forward end of the retaining sleeve is inserted into the tubular bore formed in the main body housing;the fastening nut is threadably engaged with the male threaded portion formed on the exterior of the tubular bore; anda plurality of projection portions is provided on an outer periphery of the terminal in a vicinity of the rearward end thereof;the retaining sleeve includes, in the forward end and the rearward end thereof, respective axial score lines, and includes, on a tubular forward end portion thereof, hook-shaped portions protruding towards an axial center, the hook-shaped portions being engage with the projection portions of the terminal;constricting tapered portions clamping the score lines in the rearward end of the retaining sleeve are provided in an inner periphery of the fastening nut; andthe rearward end of the retaining sleeve grips the terminal and the outer casing of the cable in a watertight manner. 3. The water-proof connector according to claims 1 or 2, wherein the retaining sleeve comprises the tubular forward end portion surrounding the vicinity of the rearward end of the terminal, a tubular rearward end portion surrounding the outer casing of the cable, and a tubular intermediate portion linking the above, and the tubular forward end portion and the tubular rearward end portion are rendered deformable in a diameter-reducing direction by the respective axial score lines, which are formed in multiple locations therein, and the constricting tapered portions clamping the retaining sleeve are formed at respective locations of the fastening nut and the tubular bore of the main body housing that come in contact with the retaining sleeve. 4. The water-proof connector according to claim 3, wherein the retaining sleeve is formed such that the hook-shaped portions protruding towards the axial center are formed in the tubular forward end portion of the retaining sleeve and the terminal bonded to the cable is inserted, with its forward end first, into the rearward end of the retaining sleeve; and detent projection portions which, during insertion into the retaining sleeve, spread the hook-shaped portions apart and engage with the forward end face of the hook-shaped portions, thereby resisting removal from inside the retaining sleeve, and positioning projection portions, which come in contact with the rearward end face of the hook-shaped portions, are formed in the vicinity of the rearward end of the terminal. 5. The water-proof connector according to claim 4, wherein the terminal is formed by rolling up electrically conductive sheet metal material into a cylindrical shape and at least either the detent projection portions or the positioning projection portions are formed b punching the sheet material in a squared C-shape (squared U-shape) and bending the punched portions up by a small slant angle. 6. The water-proof connector according to claim 3, wherein the score lines fanned at least either in the tubular forward end portion or in the tubular rearward end portion of the retaining sleeve are formed such that the retaining sleeve is partitioned at an angle to the radial direction passing through the axial center of the retaining sleeve. 7. The water-proof connector according to claim 3, wherein a tubular sleeve gasket made up of an elastic polymeric material is interposed between the tubular rearward end portion of the retaining sleeve and the outer casing of the cable. 8. The water-proof connector according to claim 3, wherein an annular O-ring made up of an elastic polymeric material is mounted around the outer periphery of the tubular intermediate portion of the retaining sleeve and this O-ring is press fitted into the tubular bore of the main body housing by inserting the retaining sleeve into the tubular bore. 9. The water-proof connector according to claim 8, wherein a convergent tapered portion that provisionally retains the O-ring mounted on the retaining sleeve in a state free from compressive deformation is formed at the edge or in the vicinity of the aperture at the rearward end of the tubular bore provided in the main body housing. 10. The water-proof connector according to claim 1 or 2, wherein a hexahedral portion of equilateral hexagonal cross-sectional shape normal to the axial direction is formed in the main body housing and the fastening nut. 11. The water-proof connector according to claim 1 or 2, wherein a tubular engagement portion that opens at the forward end of the main body housing and passes through the main body housing in the axial direction is provided in the forward end portion of the main body housing, anda pair of guard ribs rising to a height of 3 mm or more in a direction normal to the direction of passage of the engagement portion are formed at the edge of the rearward end of the engagement portion and at a location retracted 4-9 mm from the edge portion at the rearward end in the axial direction of the main body housing.