Multifunctional Sounding Device Thickening Member Bent Portion
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Solution Overview
Problem
Traditional multifunctional sounding devices suffer from short service life and poor stability due to stress concentration in bent weak portions of the elastic supporting assembly, which are prone to fatigue fracture under long-term vibration.
Innovation Solution
The design incorporates a thickening member on the bent portions of the elastic supporting member, increasing structural strength and support rigidity by enhancing the elastic supporting assembly, which includes a first supporting arm fixed to the vibrator assembly and second supporting arms fixed to the casing, with the thickening member's thickness summing to greater than the individual supporting arms and second supporting arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional elastic supporting assembly with bent weak portions is used, then the device structure is simple and easy to manufacture, but the bent portions are prone to stress concentration and fatigue fracture under long-term vibration, reducing service life and stability
Solution Approach 1:
The patent applies local quality by adding thickening members specifically at the bent portions of the elastic supporting member where stress concentration occurs. This localized reinforcement strengthens the weak portions without requiring a complete redesign of the entire supporting assembly, thus improving reliability while maintaining relatively simple overall structure
Solution Approach 2:
The patent uses composite construction by combining the elastic supporting member material with thickening members made of different materials (metal or plastic). This composite approach allows the thickening members to provide enhanced strength and stress distribution at critical bent portions, preventing fatigue fracture while maintaining the elastic properties of the original supporting assembly
2Strength
If the thickness of bent portions is increased to improve strength, then structural strength and support rigidity improve, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent segments the thickening function from the main elastic supporting member by using separate thickening members that are attached to the bent portions. This segmentation allows the thickening members to be manufactured independently using standard processes, then assembled to the supporting member, avoiding the need for complex integrated molding or machining of variable thickness sections
Solution Approach 2:
The thickening members act as intermediary elements between the elastic supporting member and the stress concentration points at bent portions. These intermediaries distribute the stress more evenly across the bent portions, effectively increasing structural strength and rigidity without requiring a fundamental redesign of the supporting assembly geometry or manufacturing process
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 configuration effectively improves the structural strength and support rigidity of the elastic supporting assembly, enhancing the low-order mode and stability of the multifunctional sounding device, thereby extending its service life and addressing the issues of poor stability.
Implementation Method 1
the traditional elastic supporting assembly usually has a bent weak portion, where the stresses are relatively concentrated
Implementation Method 2
an elastic supporting assembly for suspending the vibrator assembly in the accommodating space and providing an elastic restoring force for the vibrator assembly
Implementation Method 3
a magnetic circuit system for driving the vibration system to vibrate and sound
Data Source
AI summary
Provided is a multifunctional sounding device and an electronic device. The multifunctional sounding device includes a casing, a sounding body accommodated in the casing, a vibrator assembly and an elastic supporting member for suspending the vibrator assembly in the accommodating space and providing elastic restoring force. The sounding body includes a vibration system and a magnetic circuit system for driving the vibration system to sound. The elastic supporting member includes a first supporting arm fixed to the vibrator assembly, bent portions bent and extended from both ends of the first supporting arm, and second supporting arms extended away from the first supporting arm and both fixed to the casing. A thickening member is arranged on each bent portion, and a sum of a thicknesses of each bent portion and the thickening member is greater than a thicknesses of the first supporting arm and the second supporting arm.