Elastic Speaker Support With Curved Cushioning for Solder Joint Fatigue
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Solution Overview
Problem
Existing speakers suffer from failure and low reliability due to easy breakage and detachment of solder joints between the damper and the voice coil or bracket during vibration, caused by the rotary force applied to the damper structure.
Innovation Solution
An elastic support with a polyline structure comprising two installation parts and an elastic part, featuring cushioning parts bent in the direction of vibration, is used to connect the voice coil and bracket, ensuring smooth transition connections and reducing stress concentrations to prevent fracture and detachment of solder joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the damper is assembled with straight portion contacting pads and fixed by laser soldering, then the assembly process is simple and efficient, but the solder joints are prone to breakage and detachment due to rotary force during vibration
Solution Approach 1:
The invention introduces a curved buffer portion in the damper structure that bends in the vibration direction. This curved geometry absorbs rotary forces generated during voice coil vibration, preventing these forces from being transmitted to the solder joints. The buffer portion acts as a mechanical cushion that dissipates vibrational energy through its curved shape, thereby protecting the solder connections while maintaining assembly simplicity.
2Strength
If the damper structure is rigidly connected to voice coil and bracket, then the structural strength is high, but the rotary force during vibration causes easy breakage of solder joints
Solution Approach 1:
The invention applies local quality by creating a differentiated structure where the buffer portion has curved geometry specifically designed to absorb rotary forces, while other portions of the damper maintain rigid connections for structural strength. The buffer portion's curved shape is localized at the connection point with the voice coil, allowing it to selectively absorb vibrational energy without compromising the overall structural integrity of the assembly.
3Ease of manufacture
If the damper uses straight portion contact with pads, then the manufacturing process is simple, but the structure is prone to failure under vibrational stress
Solution Approach 1:
The invention introduces a curved buffer portion in the damper structure that bends in the vibration direction. This curved geometry absorbs rotary forces generated during voice coil vibration, preventing these forces from being transmitted to the solder joints. The buffer portion acts as a mechanical cushion that dissipates vibrational energy through its curved shape, thereby protecting the solder connections while maintaining assembly simplicity.
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 elastic support provides a reliable and efficient assembly by minimizing the impact of rotary forces on the solder joints, enhancing fatigue resistance and maintaining a stable connection between the voice coil and bracket, thus improving the assembly's reliability and reducing the risk of failure.
Implementation Method 1
an elastic part (13) connected between the two installation parts (10'), wherein the elastic part (13) is in a polyline structure consisting of straight lines and/or curves
Implementation Method 2
at least one of the installation parts is provided with a first cushioning part (14), at least partial structure of which first cushioning part (14) is bent from the end of the installation part (10') away from the elastic part (13) toward the first direction
Data Source
AI summary
Disclosed subject matter includes an elastic support, an electronic device, and a terminal. The elastic support comprises two installation parts and an elastic part connected between the two installation parts, the elastic part is in a polyline structure consisting of straight lines and/or curves, and one end of each installation part away from the elastic part is connected with a stationary component or a component that reciprocatively vibrates in a first direction; at least one of the installation parts is provided with a first cushioning part, at least partial structure of which is bent from the end of the installation part away from the elastic part toward the first direction.