Lifting Column Brake Mechanism With Unidirectional Self-Locking Friction
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Solution Overview
Problem
Existing lifting columns face issues such as unstable elevation, wobbling, jamming, and excessive motor efficiency loss due to complex and difficult-to-install braking mechanisms, which also experience bidirectional friction resistance that varies with load.
Innovation Solution
A braking mechanism comprising a connecting component, a mounting seat, and a first friction component, where the connecting component includes a spline portion and a self-locking spring for improved self-locking performance, and the mounting seat features a limiting groove and snap-fits for easy installation and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a friction self-locking mechanism is used in lifting columns, then self-locking performance is improved, but bidirectional friction resistance increases and reduces motor efficiency
Solution Approach 1:
The patent inverts the traditional bidirectional friction mechanism into a unidirectional friction mechanism. Instead of applying friction resistance in both lifting and lowering directions, the friction component only applies resistance in the lowering direction. This inversion maintains self-locking capability while eliminating the energy loss that occurs during lifting operations, thereby resolving the contradiction between reliability and energy efficiency.
Solution Approach 2:
The patent applies friction resistance locally and selectively rather than uniformly in both directions. The friction component is designed to engage only during the lowering operation when self-locking is needed, while allowing frictionless operation during lifting. This localized application of friction quality optimizes both self-locking performance and motor efficiency by applying resistance only where necessary.
2Reliability
If traditional braking mechanisms are used, then self-locking is achieved, but the structure becomes complex and difficult to install
Solution Approach 1:
The patent merges the friction component, mounting seat, and connecting components into an integrated brake mechanism assembly. This combination consolidates multiple previously separate elements into a unified structure that maintains self-locking capability while significantly reducing installation complexity. The integrated design allows the entire braking system to be installed as a single unit, eliminating the need for complex assembly procedures.
Solution Approach 2:
The patent segments the brake mechanism into modular components (friction component, mounting seat, connecting components) that can be easily assembled and disassembled. This segmentation allows for simplified installation and maintenance while maintaining the overall self-locking function. Each module can be independently handled, reducing the complexity of the installation process compared to traditional monolithic braking mechanisms.
3Reliability
If friction components are added to lifting columns, then self-locking is improved, but the installation process becomes more difficult
Solution Approach 1:
The patent employs a nested structure where the friction component is positioned within the drive box assembly, and the connecting components are integrated into the existing lifting column structure. This nesting approach allows the friction components to be installed within the confines of the existing mechanism without requiring additional external space or complex mounting procedures, thereby improving installation ease while maintaining self-locking performance.
Solution Approach 2:
The mounting seat is designed with self-aligning features and intuitive connection interfaces that allow the friction component to be easily installed without requiring precise alignment or specialized tools. The connecting components incorporate self-explanatory mounting features that guide the installer through the assembly process, making the installation of self-locking friction components as easy as possible while ensuring reliable operation.
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 proposed braking mechanism ensures consistent lifting resistance, prevents wobbling or shaking, and improves self-locking performance by maintaining unidirectional friction, thus enhancing the stability and efficiency of lifting columns.
Implementation Method 1
a self-locking spring configured to improve self-locking performance of the braking mechanism
Implementation Method 2
maintaining unidirectional friction, thus enhancing the stability and efficiency of lifting columns
Data Source
AI summary
This application is directed to a braking mechanism that is used in a lifting column. The braking mechanism comprises a connecting component, a mounting seat, and a self-locking spring. The connecting component includes a first spline portion, a stepped portion, an intermediate connection portion, and a second spline portion, arranged sequentially along an axis. The second spline portion and the intermediate connection portion pass through the mounting seat. The stepped portion contacts an end face of the mounting seat. The self-locking spring is mounted on the intermediate connection portion. An end of the self-locking spring is fixed to the mounting seat.