Vibration Motor Weight Structure With Position-Limiting Gap
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Solution Overview
Problem
Existing vibration motors face reliability issues due to complex structures and direct contact with the housing, leading to inefficient vibration and stability problems.
Innovation Solution
A vibration motor design featuring a housing with a protruding weight and magnetic circuit system, along with an elastic support system, which includes symmetrical elastic support arms and position limiting gaps to enhance stability and prevent direct contact with the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic support is used to suspend the vibration member, then the vibration member can move freely, but the elastic support directly hits the inner wall of the housing when position is limited, resulting in low reliability
Solution Approach 1:
The patent introduces a position limiting mechanism consisting of a limiting baffle and a protruding part as an intermediary element between the elastic support and the housing. When the vibration member reaches its position limit, the protruding part contacts the limiting baffle first, preventing the elastic support from directly hitting the housing inner wall, thus resolving the contradiction between free movement and reliability
2Reliability
If limiting baffles are added to prevent direct contact, then reliability improves, but the structure becomes more complicated
Solution Approach 1:
The patent merges the position limiting function into the existing housing structure by designing the limiting baffle as an integrated component of the housing rather than a separate detachable part. The protruding part on the vibration member works in conjunction with this integrated limiting baffle, creating a compact position limiting mechanism that prevents direct contact without significantly increasing overall structural complexity
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 design simplifies the motor structure, improves vibration reliability, and enhances tactile feedback by stabilizing the vibration member and preventing collisions with the housing, resulting in improved performance and shock feeling.
Implementation Method 1
an elastic support suspending and supporting the vibration member in the accommodation space for providing elastic restoring force to the vibration member
Implementation Method 2
a magnetic circuit system accommodated in the accommodation cavity... a first voice coil wound around the first iron core and a second voice coil wound around the second iron core
Data Source
AI summary
The present disclosure provides a vibration motor having a housing with an accommodation space; a vibration member and a stator in the accommodation space. The vibration member includes a weight having a main body with an accommodation cavity and a protruding part formed by extending from diagonal corners of the main body along a vibration direction of the vibration member, and a magnetic circuit system accommodated in the accommodation cavity. A position limiting gap is formed between the protruding part and the housing along the vibration direction of the vibration member. One of the objects of the present disclosure is to provide a vibration motor with improved stability of the whole system.