Linear Module Slit Seal for Dust-Protected Carriage Access
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Solution Overview
Problem
Existing linear modules face challenges in maintaining protection against dirt and dust, particularly when used in dirty or dusty environments, due to the need for openings that allow connection between the load and the carriage, which compromises the sealing of the housing.
Innovation Solution
A linear module design featuring a housing with a longitudinal slit in the side face, sealed by a flexible slit seal that moves with the carriage, reducing the entry of particles and maintaining sealing during movement, with adjustable tensioning devices for optimal sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an opening is provided in the housing to establish a connection between the load and the carriage, then the ease of operation is improved, but the protection against dirt and dust deteriorates
Solution Approach 1:
The patent employs a flexible membrane seal that covers the opening in the housing, allowing the carriage to pass through while maintaining the seal. This flexible film structure enables operational access while preventing dirt and dust from entering the housing, thus resolving the contradiction between ease of operation and protection against contaminants.
Solution Approach 2:
The flexible membrane seal is designed to dynamically adapt to the movement of the carriage. As the carriage moves through the opening, the membrane flexes and deforms accordingly, maintaining continuous sealing contact. This dynamic behavior allows the system to maintain protection against contaminants while enabling the necessary operational movements.
2Reliability
If a seal is provided to protect against dirt and dust, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent uses a simple yet effective flexible membrane seal instead of complex multi-component sealing systems. This single flexible element provides reliable protection against contaminants while maintaining relatively simple device architecture, thus improving reliability without excessively increasing device complexity.
3Ease of operation
If the carriage extends through the housing to allow external access, then the ease of operation is improved, but the protection against harmful factors deteriorates
Solution Approach 1:
The flexible membrane seal creates a barrier that allows the carriage to extend through the housing for external access while preventing particles from entering. The membrane flexes to accommodate the carriage position while maintaining the protective barrier, thus enabling external access without compromising protection against harmful factors.
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
Enhances protection against environmental contaminants by minimizing particle ingress through the slit, reduces the number of parts required, and ensures long-term reliable operation with minimal maintenance.
Implementation Method 1
at least one flexible slit seal sealing the longitudinal slit in a section where the carriage does not project through the longitudinal slit
Data Source
AI summary
A linear module has a housing, at least one guide rail on a bottom wall within the housing, and a carriage that is longitudinally translatable relative to the housing on the guide rail. The carriage extends from within the housing through at least one longitudinal slit in a side face of the housing perpendicular to the bottom wall to an outside of the housing. At least one flexible slit seal seals the longitudinal slit in a section of the slit where the carriage does not project through the slit.