Vibrating Motor Integrally Formed Elastic Piece Mass Block
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Solution Overview
Problem
The existing vibrating motors in smart mobile devices face issues with inconsistent performance due to poor precision in the relative positions of elastic pieces and mass blocks, leading to high stress fluctuations, increased manufacturing costs, and reduced symmetry, which results in a high swing degree and reliability failures.
Innovation Solution
The vibrating motor integrates the elastic piece and mass block through stamping, ensuring precise positioning and consistency, with the elastic piece being manufactured using the same mold, enhancing the rotor system's symmetry and reducing material usage and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If two elastic pieces are separately manufactured and welded to the mass block, then the mass block can be suspended in the housing, but the precision of relative positions is poor leading to inconsistent performance and high stress fluctuation
Solution Approach 1:
The elastic piece and mass block are merged into a single integrally formed component through stamping. This eliminates the separate manufacturing and welding processes, ensuring precise relative positioning without assembly errors. The integral structure eliminates stress concentration at weld joints, reducing stress fluctuation and fracture risk during vibration.
Solution Approach 2:
The traditional mechanical assembly process (separate manufacturing followed by welding) is replaced with a stamping process that forms both the elastic piece and mass block as one integrated component. This substitution of manufacturing methodology achieves superior positioning precision and structural integrity.
2Stability of the object's composition
If two elastic pieces are manufactured separately, then they can be assembled to suspend the mass block, but they are hardly manufactured by the same mold at the same time reducing symmetry of the rotor system
Solution Approach 1:
By merging the two elastic pieces and mass block into a single integrally formed component, the patent ensures that both sides are manufactured simultaneously in the same stamping mold. This guarantees identical geometric parameters and perfect symmetry, eliminating the inconsistency that arises from separate manufacturing of multiple elastic pieces.
3Loss of substance
If traditional elastic pieces are used to suspend the mass block, then the mass block can be elastically suspended, but the elastic pieces take up a lot of space and cost a lot of materials increasing manufacturing cost
Solution Approach 1:
The elastic piece and mass block are combined into one integrally formed component, eliminating the need for separate elastic pieces. This integration significantly reduces material usage and occupies less space while maintaining the elastic suspension function through the flexible design of the integrated structure.
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
This approach improves the consistency and performance of the vibrating motor, reduces the likelihood of elastic piece fractures, and decreases manufacturing costs while maintaining a compact structure.
Implementation Method 1
an elastic piece elastically suspending the vibrating unit in the accommodating space
Implementation Method 2
The driving assembly is one of at least one driving coil and a magnetic steel assembly. The rotor is the other one of the at least one driving coil and the magnetic steel assembly
Data Source
AI summary
A vibrating motor includes a housing defining an accommodating space, a vibrating unit accommodated in the accommodating space, an elastic piece elastically suspending the vibrating unit, and a driving assembly accommodated in the housing. The driving assembly drives the vibrating unit to vibrate. The vibrating unit includes a mass block and a rotor fixed to the mass block. The elastic piece and the mass block are integrally formed through stamping. A position precision of the elastic piece is high, which improves a consistency of the vibrating motor, reduces a stress fluctuation of the elastic piece in a vibrating state, and reduces a possibility of fracture and reliability failure thereof. Moreover, two elastic portions disposed on two sides of the elastic piece are consistent, symmetry of a rotor system is improved, a swing degree of the vibrating motor is reduced, and a performance and a yield level thereof are improved.