Side-Key Waterproof Structure With Stable Bracket Positioning
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Solution Overview
Problem
The manufacturing of side key brackets with molds often results in inclined surfaces, which require additional CNC machining to correct, increasing production time and cost, and can compromise the waterproof performance of electronic devices by reducing adhesion between waterproof members and housings, leading to potential movement issues.
Innovation Solution
An electronic device design featuring a housing with an outer and inner wall forming a groove, a waterproof member with protrusions that uniformly contact the outer wall, and a bracket system to prevent movement, including a first bracket supporting a switch module and a second bracket inserted between the button assembly and inner wall to enhance waterproofing and tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional CNC machining is performed on the inclined surface manufactured by the mold, then the manufacturing precision of the housing surface is improved, but the productivity and manufacturing cost deteriorate
Solution Approach 1:
The mold is designed with a predetermined inclination angle that matches the required sealing surface angle. This preliminary design of the mold allows the housing surface to be formed with the correct inclination directly during molding, eliminating the need for subsequent CNC machining operations to correct the surface angle.
2Reliability
If additional CNC machining is performed on the inclined surface, then the adhesion between waterproof member and housing is improved, but the manufacturing cost and time increase
Solution Approach 1:
The mold incorporates the correct inclination angle in its design, so that the housing surface is formed with the proper angle for waterproof member adhesion directly during the molding process. This preliminary action ensures reliable waterproof performance without requiring additional machining steps.
3Productivity
If the inclined surface is not corrected by CNC machining, then the manufacturing time and cost are reduced, but the bracket stability deteriorates due to repulsive force
Solution Approach 1:
The mold is designed with the predetermined inclination angle that corresponds to the repulsive force direction. This preliminary design ensures that the housing surface naturally accommodates the bracket with the correct angle, preventing bracket movement caused by repulsive force without requiring additional machining operations.
Data Source
AI summary
An electronic device includes a housing having an outer wall forming a side surface of the electronic device and having at least one opening and an inner wall arranged to be spaced apart from the outer wall to form a groove. The electronic device further includes an input button inserted into the opening; a waterproof member arranged between the outer wall and the inner wall and including a protrusion coming in contact with one surface of the outer wall; a switch module including a switch; and a bracket arranged between the switch module and the inner wall. The protrusion forms a structure in which the height of a first region is greater than the height of a second region on the basis of one surface of the waterproof member corresponding to the position in which the input button is arranged.