Camera Module Magnet Support via Base Protrusion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high manufacturing cost of camera modules due to the use of slide core molds for forming through holes in holder members, and the risk of foreign object introduction through gaps in the shield can, base, and holder member.
Innovation Solution
A camera module design that eliminates the need for a slide core mold by forming magnet reception portions as open openings on the holder member, with a base protrusion supporting the magnet and a shield can to minimize foreign object entry, using a metal material for the shield can and optimizing the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a through hole is formed in the holder member using a slide core mold, then the magnet can be securely held, but the manufacturing cost increases significantly and foreign objects may be introduced through gaps
Solution Approach 1:
The invention extracts the magnet holding function from the through-hole structure and relocates it to the base. The base is formed with a protrusion that directly supports the magnet, eliminating the need for a through hole in the holder member. This removes the requirement for a slide core mold while maintaining secure magnet holding through the protrusion-base-magnet contact interface.
Solution Approach 2:
The base acts as an intermediary element between the holder member and the magnet. Instead of directly forming a through hole in the holder member, the base with its protrusion serves as a mediating structure that supports the magnet. This intermediary approach eliminates the complex slide core mold requirement while ensuring stable magnet positioning.
2Reliability
If a through hole is formed in the holder member using a slide core mold, then the magnet can be securely held, but foreign objects are more likely to be introduced into the camera module
Solution Approach 1:
The invention removes the through hole structure from the holder member, thereby eliminating the gap path that facilitates foreign object introduction. The magnet is supported by the base protrusion instead, which does not create gaps between the shield can, base, and holder member, thus preventing foreign object contamination.
Solution Approach 2:
The base protrusion serves as a simple, inexpensive structural element that provides the necessary magnet support without creating gaps. This simple protrusion structure eliminates the need for complex through-hole formations that would create vulnerability points for foreign object entry.
3Reliability
If a slide core mold is used to form a through hole, then the magnet can be held, but the manufacturing cost increases 10 to 15 times compared to general injection molds
Solution Approach 1:
The invention extracts the magnet support function from the holder member's through-hole structure and transfers it to the base. This eliminates the need for a slide core mold in the holder member, allowing the use of standard, cost-effective injection molds for both the holder member and base, thereby reducing manufacturing costs by 10 to 15 times.
Solution Approach 2:
The base with its protrusion serves as an intermediary that provides the magnet support function previously requiring a complex slide core mold. This intermediary structure enables the use of simple injection molds for the holder member, dramatically reducing mold manufacturing costs while maintaining reliable magnet holding.
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
Reduces manufacturing costs by eliminating the need for a slide core mold and minimizes foreign object intake by extending the contact surface and increasing the moving distance of foreign objects, thus enhancing the reliability and efficiency of the camera module assembly.
Implementation Method 1
a base formed with a protrusion configured to support a bottom surface of the magnet by being protrusively formed at a position corresponding to an opening of the magnet reception portions
Implementation Method 2
The VCM can perform an auto-focusing function by being operated through electromagnetic interaction between a magnet secured on a holder member and a coil wound on a periphery of a bobbin
Data Source
AI summary
A camera module is disclosed, the camera module including a PCB (Printed Circuit Board), a base arranged at an upper surface of the PCB, a holder member arranged at an upper surface of the base and formed with a plurality of magnet reception portions, a surface of which facing the base is opened, and a plurality of magnets coupled to the magnet reception portions, wherein the base is formed with a protrusion configured to support a bottom surface of the magnet by being protrusively formed at a position corresponding to an opening of the magnet reception portions.