Linear Guide Dustproof Strip Assembly With Symmetrical Sealing
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Solution Overview
Problem
Existing linear transmission modules face challenges in assembly precision due to asymmetric cross-sectional shapes of dustproof strips, leading to inconsistent processing and high mold repair difficulties, and require specific orientation during assembly.
Innovation Solution
A linear transmission module design featuring symmetrical dustproof members with contact portions that allow for flexible assembly direction, integrating assembly and dustproof functions, and includes grooves and retainers for stable fixation and support, facilitating easy installation and reducing wear-related replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an asymmetric cross-sectional shape dustproof strip is used, then the dustproof strip can be tightly attached to the slide rail, but the assembly direction must be confirmed and assembly cannot be performed arbitrarily
Solution Approach 1:
The patent applies asymmetry in reverse by using a symmetric cross-sectional shape for the dustproof strip. This allows the dustproof strip to be assembled in any direction without needing to confirm assembly orientation, while still achieving reliable dustproofing through the symmetric sealing structure that contacts the slide rail uniformly from any direction.
Solution Approach 2:
The symmetric cross-sectional shape gives the dustproof strip universal assembly capability, allowing it to be installed from any end cap without directional constraints. The same symmetric structure also maintains effective dustproofing performance, making the component universally applicable regardless of assembly orientation.
2Ease of manufacture
If an asymmetric cross-sectional shape dustproof strip is used, then the dustproof strip can be assembled, but processing precision is difficult to control due to inconsistent cooling and contraction
Solution Approach 1:
The patent uses symmetric cross-sectional shape to eliminate the processing precision issues caused by asymmetric cooling and contraction. The symmetric geometry ensures uniform stress distribution and consistent dimensional control during injection molding or pressing operations, making manufacturing precision easily controllable while maintaining assembly capability.
3Ease of manufacture
If an asymmetric cross-sectional shape dustproof strip is used, then the dustproof strip can be assembled, but mold opening needs to be respectively performed for different cross-sectional shapes and mold repair difficulty is high
Solution Approach 1:
The symmetric cross-sectional shape provides universal mold compatibility. A single mold design can produce dustproof strips that work in any assembly orientation, eliminating the need for different molds for different cross-sectional shapes. This significantly reduces mold repair complexity and costs while maintaining full assembly capability.
4Ease of operation
If a symmetric cross-sectional shape dustproof member is used, then assembly can be performed without confirming assembly direction, but the structure must still achieve effective dustproofing
Solution Approach 1:
The patent resolves this by using symmetric geometry that inherently provides both assembly convenience and dustproofing reliability. The symmetric cross-section ensures uniform contact with the slide rail regardless of assembly direction, while the symmetric structure itself allows assembly from any orientation without directional confirmation.
Data Source
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AI summary
A linear transmission module (100) is provided, including a slider body (110), two end caps (130), and two dustproof members (150A, 150B). The two end caps are respectively arranged at two opposite ends of the slider body. Each of the end caps includes two assembly grooves (131A, 131B) extending through the end cap in a direction. The two dustproof members extend in a direction. One end of each of the dustproof members is assembled in an assembly groove of one of the end caps, and the other end of each of the dustproof members is assembled in an assembly groove of the other end cap. Each of the dustproof members includes a dustproof member body, a first contact portion, and a second contact portion. The first contact portion and the second contact portion are respectively located on two opposite sides of the dustproof member body, protrude from the dustproof member body, and are in a symmetrical shape.