Camera Module Motor Stop Structure for Impact Protection
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Solution Overview
Problem
Existing camera module motors in electronic devices face challenges in preventing optical components from colliding with the device housing, which hinders miniaturization and effective impact protection.
Innovation Solution
A module motor design that includes a housing with an accommodation cavity and a stop structure formed by injection molding through a through hole, providing impact protection and enabling miniaturization by occupying a small space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional stop structure is used to prevent optical component collision, then impact protection is provided, but the device size increases and miniaturization is hindered
Solution Approach 1:
The stop structure is nested within the housing cavity, utilizing the existing housing space. The stop structure is formed by injection molding through a through hole in the housing, allowing it to be integrated within the housing boundaries rather than adding external protrusions, thus providing impact protection without increasing overall device volume.
Solution Approach 2:
The patent changes the material parameter of the stop structure by using a material with Shore hardness >= 20, which is harder than traditional soft stoppers. This allows the stop structure to be more compact while maintaining effective impact protection, as the harder material requires less volume to achieve the same protective effect.
2Object-affected harmful factors
If the stop structure is made of soft material for comfort, then impact absorption is improved, but structural stability and impact resistance decrease
Solution Approach 1:
The patent specifies that the stop structure material has a Shore hardness of >= 20, which is harder than traditional soft stoppers. This parameter change allows the material to maintain structural stability and resist deformation under impact while still providing effective impact protection. The harder material distributes impact forces more effectively without requiring excessive softness.
Solution Approach 2:
The stop structure is formed by injection molding, which can create composite structures with the housing. The connection part is embedded in the through hole of the housing, creating a composite assembly that combines the housing structure with the stop structure material, achieving both stability and impact absorption.
3Ease of manufacture
If the stop structure is made as a separate component for ease of installation, then assembly flexibility is improved, but device complexity and space occupation increase
Solution Approach 1:
The stop structure and housing are merged into an integrated structure where the stop structure is formed by injection molding through a through hole in the housing. The connection part is embedded in the through hole, creating a unified structure that reduces the number of separate components while maintaining ease of installation through the injection molding process.
Solution Approach 2:
The housing serves multiple functions: it provides the structural enclosure and simultaneously serves as the mounting structure for the stop structure through the through hole. The stop structure itself provides both the stopping function and structural reinforcement, reducing the need for separate components.
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 protects the camera module from impacts by dispersing stress through a stable stop structure, while allowing for device miniaturization by reducing the occupied space.
Implementation Method 1
The first stop part can be used to bear an impact of the holder... the first stop part can maintain a stable structural form against great deformation, achieving a good impact-resistant effect
Implementation Method 2
The stop structure may be formed by injection molding via the through hole
Data Source
AI summary
A module motor is provided, including a base, a holder, a driver assembly, and a housing. The housing is formed with an accommodation cavity having an opening. The holder and the driver assembly are disposed in the accommodation cavity, the driver assembly is connected between the holder and the base, and the driver assembly is configured to drive the holder to move relative to the base in a direction perpendicular to the base. The housing is provided with a stop structure, the stop structure includes a connection part and a first stop part, the connection part and the first stop part are of an injection-molding integrated structure, the connection part is embedded in a through hole, and the first stop part extends into the accommodation cavity. A hardness of the stop structure is greater than or equal to a shore hardness of 20.