Shower Hinge With Over-Close Catch and Soft-Close Damper
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Solution Overview
Problem
Conventional hinges for shower doors, especially frameless glass doors, lack mechanisms for efficient and adjustable closure, leading to issues with sealing and water leakage, and do not provide adequate control over the closing speed or height adjustment.
Innovation Solution
A hinge system incorporating an over-close mechanism, self-close mechanism, and soft-close mechanism, along with an adjustable height adjustment mechanism using eccentric washers, to ensure proper sealing, controlled closing, and adjustable panel height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hinges are used for shower doors, then the structure is simple, but the sealing performance deteriorates due to lack of assisted closing mechanisms
Solution Approach 1:
The patent combines multiple closure mechanisms (over-close, self-close, and soft-close) into a single integrated hinge assembly. The over-close mechanism includes a catch member with spring biasing, the self-close mechanism uses a pressure member with cam portion, and the soft-close mechanism incorporates a damper member, all merged into one hinge unit to achieve reliable sealing while maintaining structural coherence
Solution Approach 2:
The hinge employs dynamic elements including a spring-biased catch member that activates at different stages of door closure, a cam portion with varying cam faces that provides different mechanical advantages, and a damper that provides velocity-dependent resistance. These dynamic components enable the hinge to adapt its behavior throughout the closing motion to ensure proper sealing
2Adaptability or versatility
If no height adjustment mechanism is provided, then the hinge structure is simpler, but the adaptability deteriorates
Solution Approach 1:
The height adjustment mechanism uses an eccentric washer that can be rotated to change the effective mounting height. This dynamic adjustment feature allows the hinge to adapt to different panel heights and installation requirements without requiring multiple fixed-position hinges, providing versatility through a simple rotational adjustment
3Ease of operation
If multiple closure mechanisms are integrated, then the closing control improves, but the manufacturing complexity increases
Solution Approach 1:
The complex closure functionality is segmented into distinct functional modules: the over-close mechanism with catch member, the self-close mechanism with pressure member and cam, and the soft-close mechanism with damper. Each module is designed as a separate assembly that can be manufactured independently and then integrated into the final hinge product, facilitating modular manufacturing
4Adaptability or versatility
If the biasing force is made adjustable, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The spring biasing force is made adjustable through a mechanism that allows modification of the spring pre-load or engagement point. This dynamic adjustability enables the hinge to adapt to different door weights and sealing requirements without requiring multiple springs of different strengths, providing versatility through a single adjustable mechanism
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hinge system ensures a watertight seal, controlled closing speed, and adjustable height, enhancing the functionality and usability of shower doors by providing mechanisms for assisted closing, adjustable biasing forces, and height adjustment.
Implementation Method 1
The catch member may be biased by a spring
Implementation Method 2
The pressure member may be biased by a spring
Implementation Method 3
The damper may comprise a damping fluid responsive to displacement of the damper member by the hinge pin to apply a damping force to brake closing movement of the first hinge part
Implementation Method 4
The height adjustment mechanism may comprise at least one eccentric washer that is rotatable to adjust the height of a movable panel mounted by the hinge
Data Source
AI summary
A hinge having a first hinge part and a second hinge part. The second hinge part has a hinge pin to which the first hinge part is connected for movement relative to the second hinge part about a hinge axis between a closed position. An over-close mechanism is provided comprising a catch member on the second hinge part arranged to co-operate with the first hinge part to urge the first hinge part towards the closed position during closing movement of the first hinge part and to retain the first hinge part arrange to co-operate with the hinge pin to urge the first hinge part towards the closed position during closing movement. A soft-close mechanism is provided comprising a damper member on the first hinge part arranged to co-operate with the hinge pin to provide a braking force in the direction of closing.