Loudspeaker Module Cable Positioning via Hot Melt Encapsulation
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Solution Overview
Problem
Loudspeaker modules in portable electronic devices face challenges in cable positioning due to increasing thinness and smallness, leading to air stream hindrance and undesirable acoustic performance and uniformity.
Innovation Solution
A loudspeaker module design featuring a positioning slot with hot melt lines that encapsulates cables, ensuring secure and efficient cable positioning within the module, reducing air stream interference and enhancing acoustic performance and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are used for electrical connection, then reliability and ease of assembly are improved, but cable diameter hinders air stream circulation and acoustic performance deteriorates
Solution Approach 1:
The cable fixing method is segmented into multiple components: positioning slots for spatial arrangement, hot melt lines for encapsulation, and glue for additional securing. This segmentation allows each component to address specific aspects of cable management, collectively reducing air stream hindrance while maintaining connection reliability
Solution Approach 2:
The solution moves cable positioning from a two-dimensional surface attachment to a three-dimensional encapsulation structure. The hot melt lines form a protective casing around the cable, creating a multi-dimensional fix that reduces the cable's protrusion into the air stream path while maintaining secure attachment
2Ease of manufacture
If cables are fixed by applying glue, then assembly is simplified, but fixing effect is undesirable and internal structure uniformity is compromised
Solution Approach 1:
The fixing system is divided into distinct functional elements: positioning slots that provide geometric constraints, hot melt lines that offer encapsulation and initial adhesion, and glue that provides final securing. This segmentation replaces the single-step glue application with a multi-stage process, improving both fixing effectiveness and structural uniformity
Solution Approach 2:
The positioning slots and hot melt lines are pre-configured on the housing before cable installation. This preliminary preparation ensures that when the cable is installed, it is automatically positioned correctly and encapsulated, eliminating the variability associated with manual glue application and ensuring consistent internal structure uniformity
3Volume of moving object
If module size is reduced for portability, then device slimness is improved, but cable positioning becomes increasingly difficult
Solution Approach 1:
The solution utilizes the third dimension by creating a positioning slot that extends into the housing depth and using hot melt lines that encapsulate the cable vertically. This three-dimensional positioning approach maximizes space utilization in compact modules, enabling effective cable management even in reduced-size devices
Solution Approach 2:
The positioning slot acts as an intermediary structure between the housing and the cable. It provides a dedicated pathway and containment structure that guides cable placement, making the positioning process straightforward even in compact modules where direct attachment would be difficult
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 solution effectively positions cables in limited spaces, minimizing air stream interference and improving acoustic performance and product uniformity.
Implementation Method 1
a hot melt line is disposed on each of end faces of sidewalls on both sides of the positioning slot, and the hot melt lines, after being hot molten, encapsulate the cable in the positioning slot
Data Source
AI summary
The present disclosure provides a loudspeaker module and relates to the technical field of electroacoustic products. The loudspeaker module composes a housing, a loudspeaker unit being received in the housing, the loudspeaker unit is electrically connected with a module external circuit via a cable, an end of the cable located in the interior of the module is electrically connected with the loudspeaker unit, an end of the cable located external to the module is electrically connected with the module external circuit, a positioning slot is disposed at a position on the housing corresponding to the cable in the interior of the module, the cable is restricted in the positioning slot, a hot melt line is disposed on each of end faces of sidewalls on both sides of the positioning slot, and the hot melt lines, after being hot molten, encapsulate the cable in the positioning slot.