Linear Guide Rail Dustproof Cover Fixation Without Stress Concentration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing linear guide rail structures face issues with dust and dirt accumulation due to bolt hole caps, leading to poor coupling rigidity and instability of dustproof covers, which are prone to stress concentration and damage from fixing mechanisms.
Innovation Solution
A linear guide rail structure featuring a pressure-exerting plate and locking member at its end portion, applying a direct vertical force to fix a dustproof cover, using a fastener and pressure-exerting blocks to securely press against a pressure-exerting plate, ensuring stable fixation without stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If elastic clamping members are used to clamp both sides of the guide rail to fix the dustproof cover, then the coupling force perpendicular to the guide rail is strengthened, but the dustproof cover is prone to stress concentration and damage due to lateral forces
Solution Approach 1:
Instead of applying lateral clamping force from both sides (conventional method), the invention inverts the approach by applying axial pressing force from one end through the pressure-exerting plate. The locking member presses the dustproof cover axially against the guide rail end, converting lateral clamping action into axial pressing action, thereby avoiding stress concentration on the thin dustproof cover while maintaining strong coupling.
2Stability of the object's composition
If fixing mechanisms are used to lock the side bent portions of the dustproof cover, then the dustproof cover is prevented from sliding or loosening, but the thin dustproof cover (0.1-0.3mm) is prone to stress concentration and damage
Solution Approach 1:
The invention introduces a pressure-exerting plate as an intermediary component between the locking member and the dustproof cover. This plate distributes the pressing force from the locking member over a larger area, preventing stress concentration on the thin dustproof cover. The plate acts as a mediator that transfers the axial locking force without directly contacting and potentially damaging the dustproof cover's bent portions.
3Reliability
If the pressure-exerting plate width is made smaller than the accommodation width, then the pressure-exerting plate does not contact the fastener and stress concentration is avoided, but the fixation area is reduced
Solution Approach 1:
The invention applies local quality by making the pressure-exerting plate narrower than the accommodation space, creating a specific local configuration where the plate is positioned centrally within the accommodation space. This localized narrowing prevents contact with the fastener sides, avoiding stress concentration at the contact points, while the plate's width is still sufficient to provide adequate fixation area for the dustproof cover.
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 solution provides a robust and stable fixation of the dustproof cover in the height direction, preventing slipping and loosening, while maintaining a compact design suitable for micro guide rails, enhancing the overall durability and reliability of the linear guide rail system.
Implementation Method 1
The pressure-exerting block is locked into the fastener in the height direction to abut against the pressure-exerting plate in the height direction, so that the press surface of the pressure-exerting plate is pressed against the flat section
Data Source
AI summary
A linear guide rail structure includes a guide rail, a dustproof cover, a pressure-exerting plate, and a locking member. The guide rail extends along an axial direction. The guide rail has at least one locking hole extending from a top surface in a height direction perpendicular to the axial direction. The dustproof cover is disposed on the top surface of the guide rail to cover the locking hole. The pressure-exerting plate is disposed on an end portion of the guide rail to press against the dustproof cover. The locking member includes a fastener and at least one pressure-exerting block. The fastener is fixed to the end portion of the guide rail. The pressure-exerting block is locked into the fastener in the height direction to abut against the pressure-exerting plate in the height direction, so that the pressure-exerting plate is pressed against the dustproof cover.