Mobile Device Strap Attachment Reinforced by Metal Coupling Member
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Solution Overview
Problem
Conventional mobile devices face challenges in maintaining structural strength at narrow strap attachment locations, particularly due to the miniaturization of these devices and the use of synthetic resin materials which can compromise the strength of the attachment site.
Innovation Solution
A mobile device design featuring a pair of cabinet half-bodies connected by a metal coupling member and a synthetic resin cover body with strategically placed pass holes and a reinforced strap receiving piece, where the strap passes under the metal coupling member to distribute tension loads effectively, enhancing the structural integrity of the strap attachment area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the mobile device is miniaturized and uses synthetic resin materials, then the device size is reduced and manufacturing is simplified, but the strength at the strap attachment location deteriorates
Solution Approach 1:
The patent combines synthetic resin (cover body) with metal (coupling member) to create a composite structure. The metal coupling member is embedded in the resin cover body specifically at the strap attachment location, providing localized reinforcement where strength is needed while maintaining the overall lightweight and miniaturized design of the mobile device.
Solution Approach 2:
Instead of making the entire cover body thick or using metal throughout, the patent applies reinforcement locally only at the strap attachment area. The metal coupling member is positioned specifically where the strap attaches, providing targeted strength enhancement without compromising the overall miniaturization and keeping other areas of the device thin and lightweight.
2Area of stationary object
If the strap attachment location is made narrow to accommodate miniaturization, then the device is more compact, but the structural strength at that location is compromised
Solution Approach 1:
The patent uses a composite structure where a metal coupling member is embedded in the resin cover body at the narrow strap attachment location. This allows the attachment area to remain small and compact while the metal component provides the necessary structural strength to support the strap despite the reduced area.
Solution Approach 2:
The patent applies local reinforcement at the narrow attachment location by embedding the metal coupling member only where the strap attaches. This localized approach maintains the compact size of the attachment area while providing concentrated strength enhancement exactly where needed, without increasing the overall area.
3Volume of moving object
If the strap receiving piece is made thin to enable miniaturization, then the device is more compact, but the receiving piece becomes prone to damage and deformation
Solution Approach 1:
The patent creates a composite structure where the thin resin cover body is reinforced by the embedded metal coupling member. This allows the cover body to remain thin for compactness while the metal component provides the necessary rigidity and damage resistance at the critical strap attachment area.
Solution Approach 2:
The patent provides localized reinforcement at the strap receiving piece by embedding the metal coupling member at that specific location. This allows the overall device to remain compact with thin walls while the critical area where the strap attaches maintains high strength and resistance to deformation through the metal reinforcement.
Data Source
AI summary
A mobile device includes a pair of cabinet half-bodies 10, 6 configuring a cabinet 1; a metal coupling member 2 for coupling the cabinet half-bodies 10, 6; and a synthetic resin cover body 3 opened with at least two pass holes 30, 30 through which a strap 4 is passed, and arranged with a strap receiving piece 31 between the pass holes 30, 30. The strap receiving piece 31 has a lower surface reinforced by contacting at least one part of the coupling member 2, and a space through which the strap 4 from one pass hole to the other pass hole passes is formed below the coupling member 2.