Embedded Molding Tape Voice Coil Motor Base for Short-Circuit Isolation
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Solution Overview
Problem
Traditional voice coil motor bases have a high risk of short-circuiting due to exposed terminal connection pins during the manufacturing process, which can lead to electrical issues and structural instability in camera modules.
Innovation Solution
A voice coil motor base design featuring a molding tape embedded within the base body, with pins connected to the circuit inside the motor, and auxiliary tapes that prevent short-circuiting by being cut from the inside out, ensuring the pins remain inside the motor and avoiding contact with the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If terminal connection leading-out pins are disposed on two sides of the motor and tapes are cut to expose the pins for circuit connection, then the device is easy to assemble, but the risk of short-circuiting between the pin and housing becomes very high
Solution Approach 1:
The patent extracts the function of electrical connection from the traditional exposed pin structure and relocates it to an embedded molding tape structure. The molding tape is embedded within the base body, with pins formed at joints during processing, thereby separating the connection function from the exposed external pins that cause short-circuiting risks.
Solution Approach 2:
The molding tape is nested within the base body structure, with the pins embedded inside the voice coil motor rather than exposed externally. This nesting approach allows the connection pins to be protected within the motor structure while maintaining electrical connectivity, thus preventing short-circuiting with the housing.
2Ease of manufacture
If pins are exposed outside the motor for circuit connection, then the connection process is simple, but the structural integrity and safety of the device are compromised
Solution Approach 1:
The patent merges the molding tape with the base body structure, embedding the tape within the base body. The pins are formed at joints during processing, integrating the connection function into the structural components rather than having separate exposed pins, thereby maintaining both structural integrity and connection functionality.
3Ease of manufacture
If the base structure uses traditional exposed pin design, then the manufacturing process is conventional and simple, but the device complexity increases due to short-circuit prevention requirements
Solution Approach 1:
The pins are formed at joints of the molding tape and scrap tape during processing, before final assembly. This preliminary formation of pins during the molding process eliminates the need for subsequent pin exposure and protection measures, simplifying the overall manufacturing process while preventing short-circuiting issues.
Data Source
AI summary
Disclosed are a voice coil motor base, a voice coil motor provided with the voice coil motor base, and a camera module. The voice coil motor base includes a base body and two electrode terminals disposed on one side edge of the base body, and further includes a molding tape embedded in the base body. The molding tape is connected to the electrode terminals, the molding tape is provided with pins, and the pins connected to a circuit are disposed inside the voice coil motor.