Vibration Motor Housing Structure for Lower Mounting Height
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Solution Overview
Problem
The thickness of current vibration motors poses a bottleneck in reducing the thickness of terminal devices, as thinner motors result in degraded vibration performance.
Innovation Solution
The vibration motor design includes a housing with protruding portions that accommodate internal components, and a middle frame with avoiding holes to reduce the motor's mounting height, allowing for increased volumes of structural components without increasing overall space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the vibration motor is made thinner to reduce terminal device thickness, then the terminal device thickness is reduced, but the vibration performance deteriorates
Solution Approach 1:
The patent applies nesting by placing the first accommodating compartment inside the housing structure, which in turn is mounted on the middle frame. The first protruding portion with the accommodating compartment is nested within the space defined by the middle frame's first avoiding hole, allowing efficient space utilization and maintaining compact dimensions while accommodating necessary components for vibration performance
Solution Approach 2:
The patent transitions from a conventional planar motor structure to a three-dimensional structure by adding the first protruding portion that extends from the first wall plate. This dimensional change creates the first accommodating compartment, allowing components to be arranged in multiple levels and directions, thereby increasing functional volume without proportionally increasing the motor's footprint or thickness
2Reliability
If the volumes of structures inside the vibration motor are increased to improve performance, then the vibration motor performance is improved, but the mounting height increases
Solution Approach 1:
The patent segments the housing into distinct functional regions: the main accommodating space and the first accommodating compartment within the first protruding portion. This segmentation allows different components to be placed in optimized positions, with critical components for vibration performance housed in the first accommodating compartment, enabling volume optimization without proportionally increasing overall mounting height
Solution Approach 2:
By creating the first protruding portion that extends from the first wall plate, the patent utilizes the third dimension (depth) more effectively. This allows components to be arranged in a distributed three-dimensional configuration rather than a flat two-dimensional layout, increasing functional volume while controlling the motor's overall height profile
Data Source
AI summary
A vibration motor is used for a terminal device. The terminal device is provided with a middle frame having a first avoiding hole. The vibration motor includes a housing. The housing is provided with an accommodating space inside. The housing includes a first wall plate. The first wall plate is provided with a first protruding portion that protrudes outwards. The first protruding portion is hollow inside so that a first accommodating compartment is formed. The first accommodating compartment communicates with the accommodating space. When the vibration motor is mounted on the middle frame, an outer surface of the first wall plate faces the middle frame and the first protruding portion is accommodated in the first avoiding hole.