Robot Joint Brake With Magnetic Repulsion for Low-Impact Engagement
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Solution Overview
Problem
Existing brake apparatuses in robots often experience undesirable deformation and reduced service life due to high impact forces during braking, especially when the robot encounters sudden power outages, leading to increased maintenance costs and safety risks.
Innovation Solution
A brake apparatus featuring a locking component with a first magnet and a brake component with multiple second magnets, where the magnets have the same polarity and are positioned to generate a repulsive force, preventing the locking end from hitting the brake component and ensuring smooth engagement and braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking component releases the engaging portion to engage with the brake component during sudden power outage, then the robot can be stopped, but the engaging portion applies large impact force on the brake component causing deformation and wear
Solution Approach 1:
The patent introduces a cushioning component (elastic element) between the locking component and brake component that is pre-configured to absorb impact energy. When the engaging portion engages with the brake component during sudden power outage, the elastic element compresses to cushion the impact, preventing deformation of the brake component while maintaining reliable braking function.
Solution Approach 2:
The patent introduces an intermediary elastic element that mediates the direct contact between the locking component and brake component. This elastic intermediary absorbs the shock during engagement by deforming elastically, thereby protecting the brake component from impact damage while still allowing the braking function to occur.
2Speed
If the engaging portion engages with the brake component at high speed during power outage, then the robot stops quickly, but the impact force causes deformation and accelerates wear
Solution Approach 1:
The elastic element is pre-installed in the locking component to provide cushioning before impact occurs. When high-speed engagement happens during power outage, the elastic element immediately compresses to absorb the impact energy, reducing the harmful impact force on the brake component while maintaining the quick braking response.
Solution Approach 2:
The patent converts the harmful impact force into beneficial elastic deformation energy. The elastic element absorbs the impact energy that would otherwise damage the brake component by deforming elastically, then releases this energy smoothly, transforming the harmful high-speed impact into a controlled energy absorption and release process.
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 repulsive force between the magnets allows for smooth engagement and reduced impact force, thereby preventing deformation and extending the service life of the brake components while ensuring safe braking operations.
Implementation Method 1
A side of the first magnet facing the brake component is configured to have same polarity as sides of the second magnets facing the locking component
Data Source
AI summary
The present application provides a brake apparatus for a rotating component, a robot joint and a robot including the same. The brake apparatus includes: a locking component including a locking end provided with a first magnet; and a brake component including a mounting portion connected to the rotating component and a plurality of brake ends provided on the mounting portion along a circumferential direction of the mounting portion. Each of the plurality of brake ends is provided with a second magnet. A side of the first magnet facing the brake component is configured to have same polarity as sides of the second magnets facing the locking component. A distance from the first magnet to a rotary axis of the rotating component is substantially the same as distances from the second magnets to the rotary axis of the rotating component.