Sealing Member With Differential Lip Rigidity For Rolling Devices
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Solution Overview
Problem
Conventional rolling devices are limited in their ability to seal gaps between inner and outer members, allowing foreign matter and lubricant leakage, which restricts their use in hostile environments like those with dust or coolant, reducing their applicability in industrial settings.
Innovation Solution
A sealing member with an inner lip part that presses the inner member and an outer lip part that presses the outer member, where the outer lip part has lower rigidity and a specific cross-sectional shape, such as V-shaped, W-shaped, or semi-circular, to effectively seal the gap between the inner and outer members, preventing foreign matter and lubricant leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional sealing member is fitted into the outer member with a retaining ring, then the sealing member can be easily attached, but foreign matter can enter the gap between the inner member and outer member, and lubricant can leak
Solution Approach 1:
The sealing member is divided into two distinct functional parts: an inner lip part for sealing the interface with the inner member and an outer lip part for sealing the interface with the outer member. This segmentation allows each lip part to be optimized for its specific sealing function, preventing foreign matter entry and lubricant leakage while maintaining ease of attachment to the outer member
Solution Approach 2:
Different parts of the sealing member are given different properties: the inner lip part has higher rigidity to effectively seal against the inner member, while the outer lip part has lower rigidity to effectively seal against the outer member. This local differentiation of material properties enables the sealing member to address multiple sealing challenges simultaneously
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The sealing member ensures a secure seal between the inner and outer members, enabling the rolling device to operate effectively in hostile environments filled with dust or coolant, enhancing its applicability and reliability.
Implementation Method 1
a sealing member comprising an inner lip part pressing the inner member and an outer lip part pressing the outer member
Implementation Method 2
the outer lip part has a lower rigidity than the inner lip part
Data Source
AI summary
A sealing member for a rolling device is applied to a rolling device with inner and outer members and a plurality of rolling members between so the rolling members can roll to allow relative rotational or linear movement of the outer member with respect to the inner member. The sealing member includes an inner and outer lip parts that press the inner and outer members, respectively. The outer lip part is less rigid than the inner lip part. The sealing member may have a substantially circular shape and surround the inner member. Alternatively, the sealing member may have a substantially plate-like shape and extend in a direction of relative movement of the outer member with respect to the inner member. The sealing member for a rolling device configured as described above and a rolling device provided with the sealing member can be adequately used even in a hostile environment.