Gravity Glass Door Hinge With Self-Closing Alignment

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Solution Overview

Problem

Existing shower door hinges are bulky and unsightly, unsuitable for frameless glass doors, and require strike plates and latches, which disrupt the aesthetic appeal of modern high-end shower enclosures.

Innovation Solution

A compact, self-centering or self-closing hinge system for glass doors, featuring a gravity-style lower hinge with angular and translational alignment features, and upper and lower hinges with water seals, allowing for easy installation and integration with glass panels without visible frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional piano style hinges are used to support glass shower doors, then the door can be securely attached to the enclosure, but the hinges are bulky and unsightly, disrupting the aesthetic appeal of frameless glass doors

Engineering Contradiction:
Improvedoor support capabilityVSAvoidaesthetic appearance
Core Design Contradiction:
StrengthVSShape

Solution Approach 1:

The hinge system employs nested components where the glass door is clamped between upper and lower brackets that contain pivot mechanisms. The pivot pin is nested within the lower bracket, and the entire hinge assembly is concealed behind the glass panel edges, creating a compact nested structure that provides structural support while maintaining aesthetic appearance.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The hinge system uses thin profile brackets and clamp plates that attach to the edges of the glass door. These thin components provide necessary structural support while minimizing visual intrusion, allowing the glass door to maintain its frameless aesthetic appearance.

Inventive Principle:
Principle #30Flexible shells and thin films

2Reliability

If traditional piano style hinges with strike plates and latches are used, then the door can be kept closed, but the additional components are bulky and unsightly

Engineering Contradiction:
Improvedoor closing functionVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The hinge system merges the door closing function into the hinge mechanism itself. The gravity-based self-closing feature is integrated into the pivot bracket assembly, eliminating the need for separate strike plates and latches. The upper and lower hinges work together as an integrated system to provide both support and automatic closing functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The hinge system provides self-closing functionality through gravity action. When the door is released, the weight of the glass door automatically causes it to swing closed and latch into position without requiring manual operation of separate closing mechanisms. The system serves itself by using the door's own weight to perform the closing function.

Inventive Principle:
Principle #25Self-service

3Strength

If multiple bolts are used to attach hinges to the doorjamb, then the hinge can adequately support the door weight, but the installation requires significant labor

Engineering Contradiction:
Improvedoor support capabilityVSAvoidinstallation time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The hinge brackets are designed with universal mounting capabilities that can accommodate various doorjamb configurations. The brackets include pre-drilled holes and mounting features that allow installation with fewer fasteners while maintaining structural integrity. The same bracket design can be used for both glass doors and traditional doors, reducing installation complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Shape

If the hinge system is made compact for aesthetic purposes, then the glass wall appearance is maintained, but the hinge may not adequately support the door weight

Engineering Contradiction:
Improveaesthetic appearanceVSAvoiddoor support capability
Core Design Contradiction:
ShapeVSStrength

Solution Approach 1:

The hinge system distributes structural support across multiple dimensions. The upper and lower brackets are positioned vertically to create a distributed support system that spans the height of the door. The pivot pin and clamp plates provide support in horizontal dimensions, while the mounting brackets transfer loads to the doorjamb in the depth dimension, creating a three-dimensional support structure that is both compact and strong.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 provides a seamless, unbroken glass wall appearance, eliminates the need for strike plates and latches, and simplifies installation, enhancing the aesthetic and functional appeal of frameless glass doors.

Implementation Method 1

The lower hinge is a gravity style hinge that provides for self-centering or self-closing action of the door

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS20250389146A1Gravity Hinge System for Use with Glass Doors
Publication Date: 2025.12.25 C R LAURENCE COMPANY INC
  • US20250389146A1 patent drawing
  • US20250389146A1 patent drawing
  • US20250389146A1 patent drawing

AI summary

A hinge system for use with frameless glass shower doors is presented. The hinge system is self-closing or self-centering and includes angular adjustability in two planes to aid in door alignment. The door hinge system further includes drop-in pivot pins which aid in shower door installation and also includes adapter plates that allow for installation to glass walls and further includes adapter plates that allow door panels equipped with the hinge system to be installed as fixed panels at various angles.