Shower door hinge assembly
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Solution Overview
Problem
Conventional shower door hinges lack effective control over rotational position and movement, often causing collisions with objects in constrained spaces, leading to potential damage.
Innovation Solution
A hinge assembly with a mount, upper and lower members, a body with planetary gears, and a stop member that allows for selective adjustment of rotational endpoint and tactile response, preventing collisions and assisting users with door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional shower door hinges are used, then the door can pivot freely, but the door may collide with objects in constrained spaces causing damage
Solution Approach 1:
The hinge assembly incorporates a damper that dynamically adjusts the door's rotational movement, providing resistance during pivoting to prevent collisions while maintaining operational freedom. The damper creates a controlled damping effect that limits the door's movement speed and range, preventing harmful collisions with surrounding objects.
Solution Approach 2:
The stop member acts as an intermediary element between the door and the hinge body, providing a mechanical limit to the door's rotational range. This stop member physically blocks the door from rotating beyond a safe angle, preventing collisions with objects in constrained spaces while allowing free pivoting within the permitted range.
2Manufacturing precision
If the hinge assembly includes adjustable stop member and damper, then rotational position control is improved, but device complexity increases
Solution Approach 1:
The hinge assembly is segmented into distinct functional components: a mount, upper and lower members, a body with planetary gears, a stop member, and a damper. This segmentation allows each component to perform its specific function independently, making the complex system easier to manufacture, assemble, and maintain while achieving precise rotational position control.
Solution Approach 2:
The hinge assembly integrates multiple functions into a single unified structure. The planetary gears provide both support and controlled movement, the damper simultaneously controls movement speed and provides cushioning, and the stop member both limits rotation and provides tactile feedback. This multi-functionality reduces the need for separate components, managing complexity while achieving precise control.
3Manufacturing precision
If planetary gears are used in the hinge assembly, then rotational movement control is improved, but manufacturing complexity increases
Solution Approach 1:
The planetary gear system is divided into separate, pre-fabricated components including the sun gear, planetary gears, and ring gear with splines. These segmented components can be manufactured independently using standard gear manufacturing processes, then assembled into the hinge body, reducing overall manufacturing complexity while maintaining precise rotational control.
Solution Approach 2:
The planetary gears are configured to automatically engage and disengage based on the door's movement. The gear teeth and splines self-align and self-lock during rotation, providing controlled movement without requiring additional actuators or complex control mechanisms, simplifying the manufacturing process.
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 assembly effectively controls the rotational position of the shower door, preventing collisions with objects and providing assistance for users, enhancing usability and safety in constrained spaces.
Implementation Method 1
The damper is configured to elastically deform in response to contacting at least one of the plurality of gears during rotation of a pivotable shower door so as to provide a particular tactile response to a user
Data Source
AI summary
A shower door hinge assembly includes a mount, an upper member, a lower member, a body, a plurality of gears, and a stop member. The mount is configured to be coupled to a fixed structure. The upper member is coupled to an upper portion of the mount, and the lower member is coupled to a lower portion of the mount. The body is rotatably coupled to the mount and is configured to be coupled to a pivotable shower door, wherein the body includes an inner wall having a plurality of splines defining a ring gear. The plurality of gears are disposed in the body and are configured to permit relative rotational movement between the body and the upper and lower members. The stop member is removably coupled between the inner wall of the body and one or more gears of the plurality of gears, and is configured to be selectively removed from, and repositioned within, the body to set a rotational endpoint for a pivotable shower door.