Patent ID: 7735876

Claim:
A fastening device for fastening cables and wave hoses, comprising: a first casing, comprising a first through hole, a slope first and a first inner thread section; an inner holding part located inside the first casing for clamping a cable; a waterproof screw annulus being a hollow column, comprising a first thread section, a second thread section, a block and a first slanted portion, the block positioned between the first thread section and the second thread section, the first slanted portion positioned in the inner side of the first thread section, and the inner holding part located inside the waterproof screw annulus, the first casing engaging with the first thread section; a positioning nut comprising an inner thread portion and at least one positioning slot being an annular wedge-shaped slot, the inner thread section of the positioning nut engaging with the second thread section of the screw annulus; a connecting annulus being a hollow column, one end of the connecting annulus having a positioning annular flange having a taper-shaped section for engaging with the positioning slot such that the positioning slot mates with the positioning annular flange to form a sealed waterproof assembly, the other end of the connecting annulus having an outer thread section, a second inner thread section and a second slanted portion formed on an inner side of the connecting annulus, the inner thread section of the connecting annulus engaging with the second thread section of the screw annulus; an inner buckled nut being a hollow column, the inner buckled nut having an inner wall being resilient, one end of the inner wall extending out to form an outer wall which parallels the inner wall, a slot defined between the inner wall and the outer wall, at least one positioning tab formed at one side of the inner wall for resiliently retaining a wave hose, the inner buckled nut being located inside the connecting annulus; a second casing, comprising a second through hole, a second slope and a third inner thread section; and a resilient washer, having an inner wave surface and a third slanted portion, positioned inside the second casing, and sandwiched between the second casing and one end of the inner buckled nut for engaging with the wave hose.