Robot Joint Brake Mechanism for Adjustable Friction Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake mechanisms in robots face issues with friction force being either too large, causing damage, or too small, leading to increased brake distance and safety concerns.
Innovation Solution
A brake mechanism with a friction member fixed to a motor rotor, a brake member, a pushing member providing adjustable force, and a locking mechanism to prevent rotation, allowing for dynamic adjustment of friction force within an appropriate range using elastic members or electromagnets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If friction force of the brake mechanism is increased to shorten brake distance and improve safety, then braking performance is improved, but impact and damage to the brake mechanism and other components increases
Solution Approach 1:
The patent applies the dynamics principle by making the friction force adjustable rather than fixed. The pushing member can dynamically adjust the pressing force between the brake member and friction member based on operational conditions, allowing the system to optimize between braking performance and component protection in different states
Solution Approach 2:
The patent implements parameter changes by allowing the friction force parameter to be adjusted within a range. By changing the pressing force parameter through the pushing member's displacement, the system can adapt friction force to different operational requirements, preventing both excessive impact and insufficient braking
2Object-affected harmful factors
If friction force of the brake mechanism is decreased to reduce impact on components, then component durability is improved, but brake distance increases and safety is compromised
Solution Approach 1:
The system uses the pushing member to dynamically adjust the brake member's position and the resulting friction force. This dynamic adjustment capability allows the system to increase friction force when safety is critical and decrease it when component protection is prioritized
Solution Approach 2:
By changing the pressing force parameter through adjustable pushing member displacement, the system can optimize friction force to balance component durability and braking safety, preventing both excessive impact and insufficient braking performance
3Device complexity
If fixed friction force is used in the brake mechanism, then结构简单性 is maintained, but the system cannot adapt to wear and varying operational conditions
Solution Approach 1:
The patent transforms the static brake mechanism into a dynamic one by introducing the adjustable pushing member. This allows the brake mechanism to adapt its friction force to varying operational conditions and component wear while maintaining relatively simple structural implementation
Solution Approach 2:
The system enables self-adjustment of friction force based on operational needs and wear conditions. The pushing member can be adjusted to compensate for friction member wear, allowing the system to maintain optimal performance without complex external control mechanisms
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
Maintains friction force within an optimal range, reducing impact on components and ensuring safe and precise control of robot movements by adjusting friction force based on wear and operational conditions.
Implementation Method 1
a pushing member abutting against the other side of the friction member and configured to provide an adjustable pushing force to the brake member
Implementation Method 2
a friction member configured to be fixed to a rotor of the motor; a brake member abutting against one side of the friction member
Data Source
AI summary
The present disclosure relates to a brake mechanism, a joint actuator and a robot. The brake mechanism includes a friction member configured to be fixed to a rotor of the motor, a brake member abutting against one side of the friction member, a pushing member abutting against the other side of the friction member and configured to provide an adjustable pushing force to the brake member, a locking mechanism configured to prevent the brake member from rotating according to a brake command.