Patent ID: 7641493

Claim:
A waterproof tightening structure for a signal connecter comprising, a bolt sleeve; a tightening connecter; a fixing outer sleeve; said bolt sleeve axially bored with a through insert hole in the center; said bolt sleeve having an inner circumference of one end annularly provided with a stop edge radially protruding toward its center with a first engage surface formed thereon; said tightening connecter being inserted in said insert hole of said bolt sleeve and stopped and restrictedly positioned by said stop edge to be loosely fitted with said bolt sleeve; said fixing outer sleeve having its front inner hole tightly fixed with said tightening connecter to let said fixing outer sleeve covering an outer circumference of said tightening connecter; said tightening connecter formed with a flange to resist against said stop edge of said bolt sleeve; said tightening connecter extended axially with a gradually dwindling diameter and formed thereon with a second engage surface, an annular projection and a rear-sectional ratchet member; said tightening connecter diametrically formed with an annular recess at a location abutting said annular projection and said second engage surface; an elastically tightening waterproof washer received in said annular recess; said waterproof washer resisting against both said stop edge of said bolt sleeve and a front end of said fixing outer sleeve; said stop edge of said bolt sleeve being formed with an annular holding groove; said annular holding groove resisting against said waterproof washer; said first engage surface formed into a conical surface wherein said first engage surface strictedly fixed with said second engage surface; said fixing outer sleeve having said inner hole at the rear end thereof being tightly fixed on an outer circumference of said annular projection of said tightening connector; and said tightening connector having waterproof and tightening functions.