Joint Filling Device with Excess Compound Collection Channel

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Solution Overview

Problem

Existing devices for applying and smoothing plastic filling compounds in joints, especially in internal corners, often result in uneven filling and excess material contaminating adjacent walls, requiring additional cleaning and correction.

Innovation Solution

A device with a collecting space for excess filling compound, connected by channels to the top section, prevents excess material from spilling over and contaminating adjacent walls by directing it into the collection space, ensuring even filling and smooth surfaces without the need for additional correction tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a hand lever press is used to spray out joints with filling compound, then the joint can be filled, but the filling compound forms uneven thickness and contaminates adjacent walls

Engineering Contradiction:

Improvejoint filling uniformityVSAvoidwall contamination

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The device divides the filling process into controlled segments: the spout delivers filling compound through a channel to a smoothing surface, which then distributes it uniformly along the joint. This segmentation allows precise control over where the filling compound goes, preventing wall contamination while ensuring uniform joint filling.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The smoothing surface acts as an intermediary between the spout and the joint. It receives the filling compound from the spout and mediates its distribution along the joint, ensuring even thickness and preventing direct contact with adjacent walls that would cause contamination.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If excess filling compound is allowed to swell behind the attachment piece, then the joint can be fully filled, but the excess material contaminates adjacent walls

Engineering Contradiction:

Improvejoint filling completenessVSAvoidwall contamination

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The channel behind the smoothing surface captures the harmful excess filling compound that would otherwise contaminate walls and converts it into a beneficial feature by directing it into a collection reservoir. This transforms the problem of excess material into a controlled collection system.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The device extracts excess filling compound from the main flow path behind the smoothing surface and separates it into a dedicated collection channel and reservoir. This extraction prevents the excess material from reaching and contaminating adjacent walls while maintaining complete joint filling.

Inventive Principle:

Principle #2Taking out (Extraction)

3Manufacturing precision

If the spout is pulled along the joint to fill it evenly, then the joint can be uniformly filled, but inexperienced users cannot maintain consistent pressure and dosage

Engineering Contradiction:

Improvejoint filling uniformityVSAvoiduser skill requirement

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The smoothing surface is designed to be self-regulating in its interaction with the joint. As the device moves along the joint, the smoothing surface automatically maintains contact and distributes the filling compound evenly without requiring the user to precisely control pressure or speed, making the process accessible to inexperienced users.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The device changes the pressure parameters automatically through its mechanical design. The smoothing surface maintains consistent contact pressure with the joint throughout the process, and the channel system regulates the flow of filling compound, eliminating the need for users to manually adjust pressure and dosage parameters.

Inventive Principle:

Principle #35Parameter changes

4Object-affected harmful factors

If scraper blades or additional devices are used to remove excess filling compound, then wall contamination can be reduced, but the device complexity increases and additional cleaning is still required

Engineering Contradiction:

Improvewall contaminationVSAvoiddevice structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The collection channel and reservoir are merged into the main body of the attachment piece, combining the functions of excess material collection and storage in a single integrated structure. This merging eliminates the need for separate scraper blades or additional devices while maintaining effectiveness in preventing wall contamination.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2740861B1Device for applying, confining and smoothing joints that are manually filled with a plastic filling compound

Publication Date: 2018.06.20 KLEMKE RICHARD

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AI summary

The device has a putting retainer (28) which is extended from the sleeve and lead into a caper surface diagonally with the channel (36) in which a prism-shaped article piece (12) is arranged, whose contact surfaces are bent against each other on both sides of caper surface. A catching space (38) is formed in rear end (48) of article piece for filling excess filling material, so that rear end of article piece and catching space are connected with caper surface through specific channel (44) which is extended and is opened into the extension portion of caper surface.