Electric Motor Brake Bushing Damping for Precise Angle Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake arrangements for electric motors face challenges in accurately detecting the angle of the rotor shaft due to noise and disruptive influences during operation, which affects the precision of angle detection.
Innovation Solution
A brake arrangement that incorporates a magnetic body, winding, bolts, a housing part with a braking surface, an armature disk, a brake pad carrier, and bushings with elastic materials to absorb impact shocks and provide damping, allowing for precise angle detection by reducing disruptive influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional brake arrangement is used, then the brake function is achieved, but noise and disruptive influences occur during operation affecting angle detection precision
Solution Approach 1:
The patent introduces a damping element as an intermediary component between the armature disk and the magnet body. This damping element absorbs impact shocks and reduces noise during brake operation, thereby eliminating the harmful factors that interfere with angle detection while maintaining the brake's functional performance
2Measurement precision
If damping elements are added to reduce noise, then angle detection precision improves, but device complexity increases
Solution Approach 1:
The damping element is designed to perform multiple functions simultaneously: it dampens impact shocks, reduces noise, and protects the magnetic body. By consolidating these functions into a single component, the patent avoids increasing device complexity while achieving improved angle detection precision
3Stability of the object's composition
If the armature disk is firmly connected to the magnet body, then structural stability improves, but impact shocks increase affecting noise and detection accuracy
Solution Approach 1:
The damping element is pre-installed between the armature disk and the magnet body to provide cushioning before impact occurs. This beforehand cushioning absorbs the impact shocks when the armature disk strikes the magnet body, maintaining structural stability while reducing harmful factors like noise and vibrations that affect angle detection
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 effectively dampens impact shocks and torque jerks, ensuring robust angle detection and extended service life by minimizing static friction and corrosion, while maintaining a compact design.
Implementation Method 1
The first bushing is made of a softer and/or more elastic material than the second bushing. This is advantageous in that the shock can be dampened
Implementation Method 2
the first bushing acts as an axial plain bearing for the bushing combination, i.e., the two press-fitted bushings, i.e., the first and second bushings
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a brake assembly for an electric motor, comprising: - a magnet body; - a winding; - at least one bolt; - a housing part having a braking surface; - an armature disk; - a brake pad carrier; - a shaft; - at least one spring part, more particularly a counter spring; - at least one first bush, wherein: - the housing part is connected to the magnet body by means of the bolt; - the first bush is held in a second bush; - the spring part, which is supported on the housing part, presses the first bush and/or the second bush toward the magnet body; - the radial distance range covered by the armature disk contains the radial distance range covered by the second bush; - the axial range covered by the armature disk contains the axial range covered by the second bush.