Sliding Shower Door Support Without Massive Upper Guides

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Solution Overview

Problem

Existing shower cabin sliding door systems require massive guide devices that are aesthetically and functionally disruptive, making assembly and maintenance difficult due to their structural and aesthetic impact.

Innovation Solution

A sliding door shower cabin design that eliminates the need for upper guide elements by using a sliding support system with wheels and axial locking disks, integrated into the door and fixed portion, allowing for smooth operation without additional metal profiles, thus minimizing material usage and simplifying assembly and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If massive guide devices are used for sliding door support, then the door can slide smoothly, but the aesthetic quality and structural simplicity are degraded

Engineering Contradiction:
Improvesliding door operationVSAvoidaesthetic quality
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The patent extracts and eliminates the massive upper guide devices from the shower cabin structure. Instead of using traditional overhead guides, the invention supports the sliding door exclusively through lower guide elements integrated into the base structure, removing the aesthetic burden of large metal profiles while maintaining smooth sliding operation.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transitions the guidance system from a two-dimensional overhead structure to a one-dimensional lower track system. By moving the guide elements to the base level and integrating them into the shower tray or floor structure, the design achieves simpler aesthetics while preserving functional performance.

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

2Ease of operation

If massive guide devices are used for sliding door support, then the door can slide smoothly, but the device complexity and maintenance difficulty increase

Engineering Contradiction:
Improvesliding door operationVSAvoidguide system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent removes the complex upper guide mechanism entirely, retaining only the essential lower guide elements. This extraction of unnecessary components simplifies the overall device complexity while maintaining the core sliding function.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The guide elements are merged with the base structure or shower tray, creating an integrated system rather than separate components. This merging reduces the number of parts and simplifies maintenance while ensuring smooth door operation.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If additional metal profiles are added for guidance, then the sliding function is enabled, but the material usage and structural impact increase

Engineering Contradiction:
Improvesliding door functionVSAvoidmetal material usage
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent extracts and eliminates the need for additional metal profiles by integrating guidance functionality into the existing base structure. This approach maintains the sliding door function while minimizing material usage.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The base structure or shower tray is designed to serve multiple functions: supporting the door weight and providing guidance simultaneously. This multi-functionality eliminates the need for separate metal profiles, reducing material consumption while maintaining adaptability.

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

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 provides a more aesthetically pleasing and functionally advantageous shower cabin with reduced material usage, simpler assembly, and easier maintenance by eliminating the need for large metal profiles, while maintaining the elegance and practicality of sliding door systems.

Implementation Method 1

wheels (41, 51) with a circumferential race (41a, 51a), supported cantilever on the outer face of the door, and adapted to rotate via bearings (42, 52) on shafts (43, 53)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2305085B1Shower cabin with sliding door
Publication Date: 2016.08.17 ANTONIO LUPI DESIGN
  • EP2305085B1 patent drawingFigure 1
  • EP2305085B1 patent drawingFigure 2
  • EP2305085B1 patent drawingFigure 3~6

AI summary

Shower cabin comprising a front wall (1) with a fixed part (11) having a top edge, and a door (12) displaced with respect to the fixed part so as to be movable in parallel fashion to itself and to the fixed part (11), between an opening position, in which it overlaps at least partially the fixed part (11), freeing a passage for permitting a user to enter the shower area, and a closed position in which said passage is blocked, the cabin also comprising guide means for the sliding of the door (12) comprising lower guide means (4,6) arranged at the base of the door and top guide means (5,8) operating in the top area of the door, the top guide means (5,8) comprising sliding means (5) projecting from a face of said door (12) and slidably engaged in a slot (8) formed on the fixed part (11) parallel to the top edge.