Oscillating Linear Motor Structure to Reduce Swing Rod Deformation
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Solution Overview
Problem
Conventional oscillating linear motors for hair clippers face issues with high workload and deformation of the swing rod due to opposing forces from the rotor and elastic piece, leading to instability and reduced service life.
Innovation Solution
The oscillating linear motor design features a housing with a coil fixing base, symmetrically arranged rotors, movable bottom seats, connecting pieces that transfer force directly to the housing, a linkage piece for synchronized movement, inverted T-shaped swing rods with triangular reinforcement, and a reset spring for improved frequency and stability, reducing the workload on the swing rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the elastic piece is fixed to the swing rod to improve swing frequency, then the swing frequency is improved, but the swing rod bears great force and is prone to deforming and twisting
Solution Approach 1:
The patent introduces an elastic piece connecting seat as an intermediary component between the swing rod and the elastic piece. This mediator transfers the elastic force from the elastic piece to the movable bottom seat rather than directly to the swing rod, reducing the workload and deformation risk of the swing rod while maintaining the swing frequency improvement
Solution Approach 2:
The patent segments the force transmission path by separating the elastic piece connection from the swing rod. The elastic piece connects to the movable bottom seat through the elastic piece connecting seat, creating an independent force transmission channel that does not burden the swing rod structurally
2Speed
If the elastic piece connecting seat is fixed to the upper end of the swing rod, then the swing frequency is improved, but the swing rod bears opposing forces from rotor and elastic piece
Solution Approach 1:
The elastic piece connecting seat serves as a mediator that redirects the elastic force away from the swing rod. By connecting the elastic piece to the movable bottom seat instead of the swing rod, the opposing forces are isolated from the swing rod, preventing deformation while maintaining high-frequency oscillation capability
Solution Approach 2:
The patent inverts the conventional connection arrangement by fixing the elastic piece to the movable bottom seat rather than to the swing rod. This inversion changes the force transmission path, allowing the swing rod to focus on oscillation while the movable bottom seat absorbs the elastic forces
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 design minimizes the force borne by the swing rods, enhances structural strength, and increases the service life by allowing direct force transmission and quicker responses, while the miniaturized square structure facilitates product compactness.
Implementation Method 1
a coil emits a magnetic induction staggered force to drive a rotor
Implementation Method 2
an elastic piece connecting seat is fixed to a top of the swing rod, the elastic piece connecting seat is vertically connected to an elastic piece
Data Source
AI summary
The present disclosure discloses an oscillating linear motor, including a housing. A coil fixing base for winding a coil is mounted in the housing. A stator is fixed to an interior of the coil fixing base. Rotors float at a top of the stator. Two groups of rotors are arranged symmetrically. A movable bottom seat is arranged above each group of rotors. The movable bottom seats are driven to move by respective rotors. Both sides of the movable bottom seat are connected to connecting pieces. An upper end and a lower end of the connecting piece are respectively connected to the housing and the movable bottom seat. A swing rod is fixed to an upper part of each movable bottom seat.