Open oil seal with seal interference

Abstract

The invention relates to an open oil seal with seal interference. The open oil seal comprises an open annular bottom ring, an open annular skeleton with a rectangular section is arranged in the bottom ring, a tenon and a groove which are matched are arranged at two ends of the skeleton, an open annular waist part is connected with an open annular edge ring at the inner circumference of the bottom ring, an open annular seal lip is arranged at the inner circumference of the edge ring, an open annular two-way spiral spring skeleton is arranged in the edge ring and has two sections which have equal length and opposite spiral directions, the circumference length of the inner circumference of the edge ring is less than that of a matched rotating shaft, a two-way spiral joint matched with a spiral hole in the two-way spiral spring skeleton is connected between the spiral springs, with opposite spiral directions, at two sides of an opening of the edge ring, the two-way spiral joint has two sections which have equal length and opposite spiral directions, and the two-way spiral joint is internally connected with a short cylinder core on which a radial hole is arranged. When the open oil seal is in use, not only does the seal specific pressure produced by the deformation of the edge ring exist, but also the seal specific pressure produced by the seal interference exists, and the sealing property is good.

Description

technical field [0001] The invention relates to an open oil seal, in particular to a coil spring of the open oil seal. Background technique [0002] In mechanical equipment, the rotating shaft of some equipment protrudes from the transmission box or working box, and the protruding rotating shaft is connected with other equipment to drive the rotating parts of other equipment to rotate. In order to prevent the leakage of lubricating oil or working fluid in the transmission box or the working box, and to prevent the outside sand, dust, moisture, etc. oil seal. [0003] The oil seal is a ring-shaped rubber product. The oil seal has a ring-shaped bottom ring with a ring-shaped skeleton. The inner circumference of the bottom ring is connected with a ring-shaped edge ring with a ring-shaped waist. The annular sealing lip has an annular spring groove on the outside of the edge ring, and the spring groove is embedded with an annular helical spring ring formed by connecting two end...

AI Technical Summary

Problems solved by technology

[0013] The inner diameter of the annular spiral spring ring formed by connecting the two ends of the linear spiral spring can be smaller than the bottom diameter of the annular spring groove, and the spiral spring ring can cause the radial contraction deformation of the cutting edge ring to produce a sealing ratio pressure, but the edge ring of the open oil seal cannot be stretched after forming a ring on the rotating shaft to produce a seal "interference". The above-mentioned open oil seal can only use the deformation of the edge ring to generate the sealing specific pressure, and the sealing performance is not very reliable.

[0014] In the prior art, there is no open oil seal that can produce a sealing "interference" after forming a ring around the rotating shaft

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