Frameless Sliding Shower Door Assembly Without Header Rails
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Solution Overview
Problem
Conventional sliding shower doors with frames are undesirable due to high manufacturing costs and aesthetic issues caused by oxidation, and existing frameless designs still require horizontal members that limit improvement.
Innovation Solution
A fully frameless sliding shower door assembly that uses self-supporting panels, a unique upper guide assembly, and a roller assembly with inverted U-shaped profiles to eliminate the need for vertical and horizontal framing members, along with finger guards and a track leveling feature for improved safety and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional fully framed shower door panels are used, then structural support and stability are provided, but material costs and manufacturing complexity increase due to metal frames
Solution Approach 1:
The patent removes the metal framing members from the shower door assembly, extracting the problematic component that causes oxidation and high manufacturing costs. The door panels are designed to be self-supporting without frames, eliminating the need for separate frame fabrication and installation processes.
Solution Approach 2:
The patent uses thick, rigid door panels made of translucent material that are sufficiently strong to support themselves without metal frames. These panels act as their own structural support, replacing the traditional frame-and-panel construction with a simpler panel-only design.
2Stability of the object's composition
If conventional fully framed shower door panels are used, then structural stability is provided, but aesthetic quality deteriorates due to oxidation on framing members
Solution Approach 1:
The patent removes the metal framing members that are susceptible to oxidation, eliminating the source of the aesthetic problem. By extracting the metal frames entirely and using frameless door panels, the oxidation issue is completely eliminated while maintaining structural stability through the self-supporting panel design.
3Object-affected harmful factors
If vertical framing members are eliminated to improve aesthetics, then oxidation issues are reduced, but horizontal header and rail members remain causing continued manufacturing complexity
Solution Approach 1:
The patent takes out all framing members including both vertical and horizontal components (headers and rails). The complete elimination of the frame structure achieves the aesthetic goals while further simplifying manufacturing by removing all metal fabrication and assembly operations.
Solution Approach 2:
The door panels are designed as complete structural units without any attached frames. The panels themselves provide all necessary structural support, eliminating the need for separate header and rail components that would add manufacturing complexity.
4Productivity
If door panels are made self-supporting to eliminate frames, then manufacturing efficiency improves, but panel strength requirements increase
Solution Approach 1:
The patent changes the physical parameters of the door panels by increasing their thickness to sufficient levels to provide self-support. This parameter change enables the panels to bear their own weight and provide structural stability without frames, while still allowing for efficient manufacturing through simpler fabrication processes.
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 solution reduces material costs, enhances aesthetics, and improves manufacturing efficiency by eliminating frames, while ensuring safe operation and easy installation with self-centering rollers and finger guards preventing accidents.
Implementation Method 1
The roller assembly features an inverted generally U-shaped profile on the roller which engages with a matching, non-inverted generally U-shaped profile on the track. The mating inverted and non-inverted U-shaped profiles on the roller and track, respectively, make the roller self-centering upon the track
Implementation Method 2
The need for an upper horizontal header member is eliminated by using a unique upper guide assembly where the guide is fixed to a movable shower door panel and configured to slide about a top edge of a stationary or fixed shower door panel
Implementation Method 3
The rollers of the roller assemblies are the primary vertical load carrying members of the sliding shower door assembly, i.e. the rollers support the weight of the movable door panel
Implementation Method 4
a first or Inboard finger guard with an L-shaped cross-section having a vertical flange and a horizontal flange, the inboard finger guard being attached to an inboard side of the roller assembly
Data Source
AI summary
A fully frameless sliding shower door assembly includes a sliding panel of sufficient strength to be fully self-supporting and includes a stationary panel. The need for an upper horizontal header member is eliminated by using an upper guide assembly having a guide which is fixed to the sliding panel and configured to slide about a top edge of the stationary panel. A self-centering roller assembly is attachable to the sliding panel without the need for a rail member. The roller assembly and a track therefore feature matching inverted and non-inverted generally U-shaped profiles. The shower door assembly further features inboard and outboard roller finger guards, as well as a track leveling feature which improves ease of installation.