| 摘要 |
A tubular plug-in type connection sleeve (1, 101) for forming a lead-through of a water pipe (4, 104) with a protective tube (5, 105) thereon through a hole (8) in a wall (9) of a manifold cabinet (10) comprises a flange portion (11, 111) made of an elastomer; and a radially outwards extending snapping protrusion (14, 114) on the outer surface (12, 112) of the connection sleeve defining, together with the annular sealing surface, a snapping gap (15, 115) for receiving, when in use, a cabinet wall edge (19) surrounding the hole in the cabinet wall. According to the invention, the connection sleeve comprises a gripping protrusion (22, 122) extending radially inwards from the inner surface (23, 123) of the connection sleeve for gripping the protective tube received, when in use, in the connection sleeve; and a stiffening member (28, 126) made of a plastic material, comprising a closed ring portion (27, 126) extending around the circumference of the connection sleeve, the closed ring portion being coupled to the gripping protrusion for constraining the radially outward retraction of the gripping protrusion. |
