Shower Door Frame Snap-Fit Locking for Fast Secure Assembly

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Solution Overview

Problem

Current methods for assembling shower door frames are time-consuming and labor-intensive due to the risk of screws slipping or fracturing, making the installation process difficult and inefficient.

Innovation Solution

A shower door frame design featuring a positioning projection, plug, and locking assembly with a tensioning member that snap-fits into a groove, eliminating the need for screws to connect the side frames and tracks, allowing for quick and easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If screws are used to connect the track and side frame, then the connection is secure, but the assembly process becomes time-consuming and labor-intensive

Engineering Contradiction:
Improveconnection securityVSAvoidassembly speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent replaces the traditional screw-based mechanical connection system with a snap-fit locking mechanism. The locking portion on the tensioning member engages with the groove on the fixture through elastic deformation, eliminating the need for screws and significantly reducing assembly time while maintaining secure connection.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The tensioning member automatically locks into place through its own elastic deformation when installed. The locking portion deforms elastically to engage with the groove, creating a self-securing connection that does not require additional fastening operations or tools.

Inventive Principle:
Principle #25Self-service

2Reliability

If multiple holes and threaded holes are provided for screw assembly, then the track and side frame can be fixedly connected, but the installation process becomes complex and error-prone

Engineering Contradiction:
Improveconnection stabilityVSAvoidinstallation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent extracts and eliminates the screw fastening system entirely, removing the need for multiple holes and threaded holes. The connection is achieved through the snap-fit locking mechanism alone, simplifying the installation process while maintaining stable connection through the elastic locking portion.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The elastic locking portion acts as an intermediary between the tensioning member and the fixture groove. It mediates the connection by deforming to engage with the groove and then maintaining a secure fit, providing both simplicity and stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If screws are used for assembly, then the connection is secure, but screw heads may slip or fracture causing installation difficulties

Engineering Contradiction:
Improveconnection strengthVSAvoidinstallation reliability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent uses a single-use snap-fit locking mechanism that is designed to be installed and then permanently secure the connection. The elastic locking portion is designed for one-time engagement, eliminating the risk of screw slippage or fracture while maintaining connection strength.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the physical state of the locking portion from rigid (like a screw) to elastic. This parameter change allows the locking portion to deform during installation and then maintain a secure, slip-resistant connection, eliminating the problems associated with screw fastening.

Inventive Principle:
Principle #35Parameter changes

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 design significantly reduces installation time and labor by simplifying the assembly process, ensuring secure fixation without screws and maintaining a clean appearance by hiding the screw head within a step portion.

Implementation Method 1

a locking assembly is provided to the side frame (30), the locking assembly comprising a fixing base (40) fixed on the side frame (30) and a tensioning member (50) connected to the fixing base (40) via a connecting rod (60), the tensioning member comprising a locking portion snap-fitted in the groove (25)

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3061899B1Shower door frame and shower door
Publication Date: 2018.08.22 IDEAL SANITARY WARE CO LTD
  • EP3061899B1 patent drawingFigure 1
  • EP3061899B1 patent drawingFigure 2
  • EP3061899B1 patent drawingFigure 3

AI summary

The present invention relates to the field of sanitary and bathing equipment, and particularly to a shower door frame and a shower door used in a shower room. The shower door frame comprises a track extending in a horizontal direction and a side frame vertically arranged relative to the track, wherein a fixture is fixed at an end of the track, and a plug passing through the side frame is provided at an outer side of the fixture and is provided with an exit stopper; and a locking assembly is provided to the side frame, the locking assembly comprising a fixing base fixed on the side frame and a tensioning member connected to the fixing base via a connecting rod, the tensioning member comprising a locking portion snap-fitted to the exit stopper. The shower door comprises the above shower door frame and a glass panel positioned within the shower door frame.