Integrated Double-Opening Lid Hinge for Low-Backlash Vehicle Storage
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Solution Overview
Problem
On-vehicle double opening storage devices require a large number of components, leading to significant dimensional errors and potential backlash during vehicle operation, and fail to adequately address noise reduction in electric and hybrid vehicles.
Innovation Solution
The device integrates a hinge member with a tubular first and second shaft, and a hinge arm, all made of resin, to reduce component count and suppress backlash, while incorporating a switching element and vibration suppression parts for improved quietness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mechanisms are used to enable bidirectional lid opening, then the lid member can open and close from both sides, but the number of components increases significantly
Solution Approach 1:
The patent merges the first mechanism (for opening from one end side) and the second mechanism (for opening from the other end side) into a single integrated mechanism. The lid member is configured to rotate around a single axis that extends in the width direction of the case member, allowing bidirectional opening while reducing the number of separate mechanisms and components.
2Adaptability or versatility
If the number of components is large, then bidirectional opening functionality is achieved, but dimensional errors accumulate and backlash occurs
Solution Approach 1:
By integrating multiple functions into fewer components, the patent reduces the accumulation of dimensional errors that occur when many separate parts are assembled. The single axis mechanism and integrated lid structure minimize the number of interfaces and connections, thereby reducing backlash and improving manufacturing precision.
3Adaptability or versatility
If multiple mechanisms and switching mechanisms are added, then lid opening direction can be switched, but the device becomes more complex and noisy
Solution Approach 1:
The patent integrates the switching functionality directly into the lid member and case member structures. The lid member can be operated from either end side without requiring a separate switching mechanism, as the single axis rotation naturally accommodates bidirectional opening. This integration reduces mechanism complexity and potential noise sources.
Data Source
AI summary
An on-vehicle double opening 20 storage device 1 includes:a case member 2;a lid member 3;a hinge member 4 interposed between the case member 2 and the lid member 3, the hinge member 4 including a first shaft 41, a second shaft 42, and a hinge arm 44; anda switching element 5 that changes a connection state between the lid member 3, the hinge member 4, and the case member 2 to switch an opening/closing mode of the lid member 3 between a closing mode, a first opening mode, and a second opening mode, whereinthe first shaft 41, the second shaft 42, and the hinge arm 44 are integrally resin-molded.