Removable Hinge Cover with Snap-On Deflecting Ramps
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Solution Overview
Problem
Vertical roll-up doors, such as garage doors, often cause damage to objects and persons when closing due to the protruding hinges, which existing sensors may not detect, leading to unintended contact and damage.
Innovation Solution
A removably attachable hinge cover with a snap-on feature and deflecting mechanism, designed to be coupled to the hinges without adhesives or fasteners, featuring a c-shaped cross-section and ramped surfaces to deflect objects and protect from contact, allowing for rotation around the hinge while preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hinge cover is permanently attached to the hinge using adhesives or fasteners, then the protective function is improved, but the ease of installation and removal deteriorates
Solution Approach 1:
The hinge cover transitions from a static permanently attached state to a dynamic removably attached state. The snap-on feature allows the cover to be easily installed and removed by users without tools, while still providing reliable protection when attached. This dynamic attachment mechanism resolves the contradiction between permanent attachment reliability and ease of installation.
Solution Approach 2:
The hinge cover's snap-on feature enables users to install and remove the cover themselves without requiring adhesives, screws, or specialized tools. The self-service installation mechanism improves ease of operation while maintaining adequate protective function through the snap-fit connection.
2Ease of manufacture
If the hinge cover is made with a narrow deflecting feature width, then the ease of manufacture is improved, but the protective coverage deteriorates
Solution Approach 1:
The patent specifies a width range for the deflecting feature (greater than 5 cm) that balances manufacturing simplicity with adequate protective coverage. This parameter optimization allows the cover to be easily manufactured while providing sufficient protection area to prevent damage to objects and persons near the hinge.
3Strength
If the hinge cover thickness is increased, then the protective strength is improved, but the device complexity increases
Solution Approach 1:
The patent specifies a minimum thickness of 9 mm for the hinge cover, which provides adequate protective strength to deflect objects and persons from the hinge while maintaining a simple single-piece construction. This parameter optimization achieves the desired protection level without unnecessarily increasing device complexity.
Data Source
AI summary
A hinge cover can be removably attachable to a hinge and include a snap on feature comprising a cylindrically shaped inner surface with a c-shaped cross-section, the c-shaped cross-section comprising an opening and a top portion opposite the opening configured to be releasably coupled to a hinge without adhesive, screws, or nails. The hinge cover can further include a deflecting feature, the deflecting feature further including a width extending in a direction of an axis of the cylindrically shaped inner surface of the snap on feature. The hinge cover can include a first ramp portion sloping away from the top of the snap on feature in a first direction. The hinge cover can include a second ramp portion sloping away from the top of the snap on feature in a second direction opposite the first direction.