Segmented Side Seal for Linear Guide
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Solution Overview
Problem
Existing side seals for linear guides are difficult to attach and adjust, leading to inadequate sealing performance due to the inability to handle as one part and independently adjust the positions of seal members.
Innovation Solution
A side seal configuration with multiple seal members, each having a lip portion, that are coupled to be relatively movable in directions perpendicular and parallel to the linear motion, allowing for easy attachment and independent adjustment, enhancing sealing performance by ensuring proper contact with the guide rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple seal members are used to improve sealing performance, then sealing performance is improved, but attachment complexity increases and positions cannot be independently adjusted
Solution Approach 1:
The side seal is divided into multiple independent seal members (first seal member and second seal member), each with its own lip portion that can be independently adjusted. This segmentation allows each seal member to be positioned separately to optimize sealing contact with the guide rail, while still functioning as a coordinated assembly.
Solution Approach 2:
The seal members are designed with adjustable positioning capabilities, allowing their positions to be dynamically adjusted during installation or maintenance. This dynamic adjustment enables optimal sealing performance to be achieved by independently positioning each lip portion against the guide rail surface.
2Ease of operation
If seal members are fixed in position to simplify attachment, then attachment is simplified, but sealing performance deteriorates due to inability to independently adjust positions
Solution Approach 1:
By segmenting the side seal into multiple independently adjustable seal members, the design achieves both ease of attachment (through standardized mounting structures) and optimal sealing performance (through independent position adjustment of each lip portion).
Solution Approach 2:
The position parameters of each seal member can be independently adjusted to optimize sealing contact. This parameter adjustment capability allows the seal members to adapt to variations in guide rail surface position while maintaining standardized attachment procedures.
3Adaptability or versatility
If seal members are made independent to allow position adjustment, then position adjustability is improved, but structural complexity increases
Solution Approach 1:
The seal members incorporate adjustable mounting mechanisms that allow position changes while maintaining structural integrity. The dynamic adjustment capability is achieved through standardized fastening structures that enable repositioning without requiring complex redesign of the overall assembly.
4Reliability
If multiple seal members with lip portions are used to contact guide rail, then sealing performance is improved, but attachment difficulty increases
Solution Approach 1:
The side seal is segmented into multiple seal members with lip portions that contact the guide rail at different locations. This segmentation improves sealing performance by ensuring comprehensive contact coverage, while standardized attachment structures maintain ease of installation.
Data Source
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AI summary
A side seal for a linear guide is fixed to both ends in a direction of linear motion of a slider with respect to a guide rail. The linear guide includes the guide rail, the slider, and a plurality of rolling elements. A portion between the slider and a top surface and both side surfaces of the guide rail is sealed by a lip portion. The side seal (1) of the invention has a plurality of seal members (2, 3) independently having the lip portions (21, 31), and the plurality of seal members (2, 3) are joined together so as to be relatively movable in a direction perpendicular to the direction of linear motion.