Adjustable Door Hinge Cover Fixation for Gap-Free Alignment
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Solution Overview
Problem
Existing door hinges with adjustable covers suffer from manufacturing complexity, potential slippage during adjustment, and visible gaps or contamination risks due to inadequate fixation of covers to fastening sections.
Innovation Solution
The cover is fixed to the fastening means, such as a screw, ensuring precise positioning through a projection engaging the screw's drive recess, with optional additional guide formations for enhanced stability, allowing simple adjustment and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the cover is fixed to the fastening section, then the cover remains in a fixed position, but the fastening section cannot be adjusted relative to the door or door frame
Solution Approach 1:
The system is segmented into three independent components: the fastening means (screw) fixed to the door/frame, the fastening section that can adjust relative to the fastening means, and the cover that follows the fastening section's position. This segmentation allows the cover to be decoupled from direct fixation to the fastening section while maintaining proper positioning through the fastening means.
Solution Approach 2:
The fastening means (screw) acts as an intermediary element between the door/frame and the fastening section. By fixing the cover to the fastening means rather than directly to the fastening section, the system allows the fastening section to adjust while the cover maintains its position through the intermediary fastening means.
2Ease of operation
If the cover is fixed to the fastening section, then the cover position is determined by the fastening section, but adjustment of the fastening section causes lateral gaps or misalignment between the cover and the door/frame
Solution Approach 1:
The fastening means serves as a precise intermediary that determines the cover's position independently of the fastening section's adjustments. This ensures the cover maintains accurate alignment with the door or door frame structure regardless of how the fastening section is positioned.
Solution Approach 2:
The cover and fastening means are merged into a single positional reference system. By fixing the cover to the fastening means, the cover's position is directly tied to the precise mounting location on the door or frame, ensuring consistent alignment while allowing the fastening section to adjust independently.
3Ease of manufacture
If adhesive or magnetic fixation is used for the cover, then the cover can be easily installed, but slippage or inaccurate positioning occurs during adjustment
Solution Approach 1:
The patent replaces weak adhesive or magnetic mechanical fixation with a robust mechanical fastening system. The cover is fixed to the fastening means using a projection that engages with a drive recess, providing reliable mechanical connection that prevents slippage while maintaining ease of installation through the integrated design.
Solution Approach 2:
The projection on the cover is designed with specific geometric features (cylindrical or conical shape) that enable easy insertion into the drive recess of the fastening means while ensuring secure engagement. The curved or tapered geometry facilitates simple installation without requiring complex fastening operations.
Data Source
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AI summary
The invention relates to a door hinge (3) with at least one articulated arm (6), with at least one adjustable hinge part (4), wherein the hinge part (4) has a holding section (10) for the at least one articulated arm (6) and at least one adjoining fastening section (9), as well as at least one receptacle for a fastening means on the fastening section (9) and is adjustable relative to the fastening means, and with a cover (8) arranged on the fastening section (9). According to the invention, the cover (8) is fixed to the at least one fastening means.