Patent ID: 7393019
Filing Date: 2008-07-01
Classification: F16L,H01R

Abstract:
1. A tube connection assembly comprising a male member including a flow path connected to a tube, a female member joined with the male member and including a flow path connected to another tube, and a mating member interposed between the male member and the female member, wherein the male member includes (i) a cylindrical male body and (ii) a retaining part that is formed on an outer peripheral part of the male body, the retaining part including a rotational locking part for preventing rotation of the mating member, the mating member is formed from an elastic material in a C-shape and held on the retaining part, the mating member including a mating part that mates with a portion of the female member, and the female member includes (i) a cylindrical female body, (ii) a receiving part that is formed on an opening end part of the female body and fits with a part of the male member, and (iii) a mating hole that is formed through the receiving part for mating with the mating part of the mating member in a radial direction, wherein the mating member is configured such that in a state where the rotation of the mating member is locked by the rotational locking part, the diameter of the mating member increases, and then the mating part protrudes into the mating hole, wherein the mating member includes (i) a foundation part formed in essentially a center part of the C-shape, and (ii) hooks that apply a force that reduces and increases the diameter of the mating member, and are formed at an opening of the C-shape respectively, and wherein the rotational locking part includes (i) a base part that conforms to the foundation part and supports the foundation part and is formed in a non-circular cross-section on an outer part of the male member, and (ii) a mating surface that prevents the rotation of the mating member through supporting the hooks respectively.