Sliding component

The sliding part design addresses the issue of seal ring fall in mechanical seals by incorporating a holding means to maintain the axial contraction of the biasing means, ensuring secure assembly and operation.

WO2025057908A1 Publication Date: 2025-03-20EAGLE INDS
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Patent Information

Application Number
PCT/JP2024/032250
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-11
Filing Date
2024-09-09
Publication Date
2025-03-20

AI Technical Summary

Technical Problem

In mechanical seals, the axial biasing force applied to the seal ring by a spring can cause the spring to extend during transportation or assembly, leading to the seal ring falling out of its support.

Method used

A sliding part design that includes a sleeve with an axially extending support portion and a radially extending receiver portion, an elastic member between the support portion and the sliding ring, a biasing means between the sliding ring and the receiver portion, and a holding means that fixes the biasing means in an axially contracted state, preventing excessive extension and ring fall.

Benefits of technology

The design effectively prevents the sliding ring from falling out by maintaining the axial movement of the biasing means within the sliding part, ensuring secure assembly and operation of the mechanical seal.

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Abstract

Provided is a sliding component capable of preventing a sliding ring from falling.　A sliding component U arranged at a relative rotation position between a housing 4 and a shaft 1 inserted into the housing 4 includes a sliding ring 10, a sleeve 11 having a support piece 11a that radially supports the sliding ring 10, a biasing means 13 that biases the sliding ring 10 to one side in the axial direction, and a holding means 15 that is fixed to the sleeve 11 and that holds the biasing means 13 in a state of being contracted in the axial direction.
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