Connector member

Abstract

A connector member according to this disclosure includes: a hollow pipe-shaped portion molded by injection molding of a synthetic resin; two ring-shaped seal grooves disposed at an outer peripheral surface of the pipe-shaped portion; and a ring-shaped gate mark formed at a region close to a pipe end with respect to the seal groove, the ring-shaped gate mark being formed at an inner peripheral surface side of the pipe-shaped portion.

What is claimed is: 
     
         1 . A connector member, comprising:
 a hollow pipe-shaped portion molded by injection molding of a synthetic resin;   two ring-shaped seal grooves disposed at an outer peripheral surface of the pipe-shaped portion; and   a ring-shaped gate mark formed at a region close to a pipe end with respect to the seal groove, the ring-shaped gate mark being formed at an inner peripheral surface side of the pipe-shaped portion.   
     
     
         2 . The connector member according to  claim 1 , wherein
 when a distance between the two seal grooves is denoted by L and an inner diameter of the pipe-shaped portion is denoted by D, L/D>3 is satisfied.   
     
     
         3 . The connector member according to  claim 1 , wherein
 the gate mark is formed at a pipe end of the pipe-shaped portion.   
     
     
         4 . The connector member according to  claim 1 , wherein
 the gate mark is formed at an inner peripheral surface of the pipe-shaped portion.   
     
     
         5 . The connector member according to  claim 1 , wherein
 the pipe-shaped portion includes a tapered distal end portion in a pipe axial direction.   
     
     
         6 . The connector member according to  claim 1 , wherein
 the pipe-shaped portion is formed by injection molding from an inner peripheral surface side of the pipe-shaped portion using a disk gate.   
     
     
         7 . The connector member according to  claim 1 , further comprising:
 a plurality of the pipe-shaped portions disposed approximately parallel; and   a plate-shaped coupling portion that couples between the plurality of pipe-shaped portions, wherein   the plurality of pipe-shaped portions and the coupling portion are integrally molded by injection molding of the synthetic resin.   
     
     
         8 . The connector member according to  claim 7 , wherein
 the coupling portion includes a weld generated during injection molding of the synthetic resin.