Loudspeaker Connection Terminal Crimping Design
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Solution Overview
Problem
Existing techniques for connecting flexible wires to terminals in loudspeakers, such as crimping or spring force, can be improved for better durability and reliability.
Innovation Solution
A loudspeaker design that includes a connection terminal with a base, first and second protrusions, and a deformed portion, where the connection wire is inserted between the protrusions and pressure-bonded by crimping the terminal, causing the protrusions to approach each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soldering is used to connect the terminal and flexible wire, then electrical connection is established, but the connection lacks mechanical strength and durability
Solution Approach 1:
The patent merges electrical connection and mechanical connection into a single integrated structure. The connection terminal includes both a conductive portion for electrical connection and a clamping portion for mechanical connection, eliminating the need for separate soldering and mechanical fastening operations. This unified structure simultaneously provides reliable electrical conductivity and strong mechanical bonding between the flexible wire and terminal.
Solution Approach 2:
The connection terminal is formed as a composite structure integrating two functional portions: a conductive portion for electrical connection and a clamping portion for mechanical connection. This composite design allows the single component to fulfill both electrical and mechanical connection requirements, improving overall connection reliability and durability.
2Strength
If crimping is used to connect the terminal and flexible wire, then mechanical strength is improved, but electrical connection reliability deteriorates
Solution Approach 1:
The connection terminal is segmented into two distinct functional portions: a conductive portion specifically designed for electrical connection and a clamping portion specifically designed for mechanical connection. This segmentation allows each portion to be optimized for its specific function - the conductive portion maintains excellent electrical contact while the clamping portion provides strong mechanical bonding, resolving the contradiction between mechanical strength and electrical reliability.
3Ease of operation
If spring force is used to push the flexible wire into the terminal slit, then connection is established, but the structure becomes complex and durability is reduced
Solution Approach 1:
The patent extracts and eliminates the spring component from the connection structure. Instead of using a separate spring mechanism to apply force, the clamping portion is designed with inherent elastic properties that provide the necessary clamping force. This extraction simplifies the overall structure by removing unnecessary components while maintaining the ease of operation and connection reliability.
4Strength
If the terminal wraps around the flexible wire, then mechanical connection is achieved, but the flexible wire experiences excessive stress
Solution Approach 1:
The clamping portion is designed with locally optimized features including a clamping groove that conforms to the shape of the flexible wire and clamping teeth that provide distributed contact points. This local quality optimization ensures that the clamping force is evenly distributed across the flexible wire surface, achieving strong mechanical connection while minimizing stress concentration and potential damage to the wire.
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
This solution enhances the durability and reliability of the connection between the flexible wire and the terminal, providing a stable electrical connection while minimizing stress on the voice coil.
Implementation Method 1
a deformed portion is included in at least one of a boundary portion between the base and the first protrusion or a boundary portion between the base and the second protrusion, the deformed portion being a portion that is plastically deformed in a direction in which the first protrusion and the second protrusion approach each other
Data Source
AI summary
A loudspeaker includes: a connection wire that connects a voice coil and a connection terminal, wherein the connection terminal includes: a base; and a first protrusion and a second protrusion that integrally protrude from the base, and a deformed portion is included in at least one of a boundary portion between the base and the first protrusion or a boundary portion between the base and the second protrusion, the deformed portion being a portion that is plastically deformed in a direction in which the first protrusion and the second protrusion approach each other.