Portable Speaker Input Panel Concealing Screw Fasteners
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Solution Overview
Problem
Conventional portable speaker devices are difficult to assemble due to exposed screw fasteners, which compromise the outer appearance.
Innovation Solution
The design incorporates a cabinet shell body with mounting walls and a positioning groove, allowing the amplifier circuit board to be fitted air-tightly within the cabinet, with screw fasteners concealed by positioning lugs and fastened frame segments, ensuring easy assembly and a clean exterior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If screw fasteners are used to fasten the amplifier circuit board and input panel, then the assembly is secure and reliable, but the screws exposed on the outside adversely affect the outer appearance
Solution Approach 1:
The screw fasteners are extracted from the visible exterior and relocated to the interior of the cabinet shell body. The input panel is designed with an inner peripheral region that defines a fitting opening, allowing the amplifier circuit board to be fastened inside the cabinet without exposing screws on the outside, thus resolving the contradiction between appearance and fastening reliability
Solution Approach 2:
The amplifier circuit board is nested within the cabinet shell body, with the input panel covering the fitting opening. The screw fasteners are nested inside the cabinet interior, concealed by the input panel's inner peripheral region, creating a nested structure that hides fastening components while maintaining secure assembly
2Ease of manufacture
If conventional assembly methods with exposed screws are used, then the fastening is simple and direct, but the assembly process is troublesome and time-consuming
Solution Approach 1:
The input panel is pre-designed with an inner peripheral region that defines a fitting opening, and the amplifier circuit board is pre-configured with a shape complementary to this opening. This preliminary design of the fitting interface enables straightforward assembly by simply fitting the board into the opening and securing with screws from the interior, reducing assembly complexity and time
Data Source
AI summary
An input-panel-equipped portable speaker device includes a cabinet shell body configured to enclose an accommodation chamber in a longitudinal direction, and having left and right mounting walls opposite to each other in a transverse direction. The left mounting wall has an inner peripheral region defining a fitting opening. The right mounting wall has a positioning groove. An input panel is connected with an amplifier circuit board, and is disposed to cover the fitting opening. When a right board edge of the circuit board is brought to be fitted in the positioning groove, an outer peripheral region of the panel is brought to abut against the inner peripheral region so as to enable an air-tight engagement therebetween.