| 摘要 |
A pipe connector comprises a tubular pin member (1) having a frustoconical outer surface (3) and a tubular box member (2) having a frustoconical inner surface (4) corresponding to the outer surface (3) of the pin member (1) and which overlies the frustoconical surface (3) of the pin member (1) when the members (1, 2) are fully engaged. The members (1, 2) are provided with inter-engageable annular projections (5) and grooves (6) on the said peripheral surfaces (3, 4) for axially locking the members together when they are fully engaged together. The projections (5) and grooves (6) are spaced apart along the surfaces (3, 4). The inner tubular surface (21) of the pin member (1) and an outer tubular surface (28) of the box member (2) each include at least one of a recess (22, 23, 32, 33) and/or a protrusion/radially enlarged section (34, 35) which reduces and/or increases the thickness of the tubular wall along the length of the associated member (1, 2) so as to balance the displacement of the members (1, 2) at different points along the length thereof under injection pressure.
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