Adjustable Impact Transmission Flank for Parquet Hammer Assembly

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Solution Overview

Problem

Existing hammer arrangements for laying parquet, laminate, or panel boards face issues with adjustable impact transmission flanks that can lead to breakage when dealing with boards of varying material thicknesses, as the impact transmission flank may either not engage effectively or risk attacking the spring.

Innovation Solution

The support flank is made position-adjustable, allowing the height of the impact transmission flank to be adjusted to match the material thickness of the boards, ensuring it engages at a maximum distance from the support flank and preventing contact with the spring, while forming a wedge-shaped gap for protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the impact transmission flank is made adjustable to adapt to different board thicknesses, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improveadaptability to different board thicknessesVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The impact transmission flank is made dynamically adjustable through a support body that can be positioned at different heights relative to the impact transmission element. This allows the tool to adapt to various board thicknesses while maintaining a relatively simple overall structure, resolving the contradiction between adaptability and device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The position of the support body is changed as a parameter to adapt the impact transmission flank height to different material thicknesses. By adjusting this single parameter, the tool achieves versatility without requiring complete structural redesign, thus balancing adaptability with simplicity.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If the impact transmission flank is positioned closer to the spring for thinner boards, then the manufacturing precision is improved, but the reliability deteriorates due to risk of spring breakage

Engineering Contradiction:
Improveprecision of impact transmissionVSAvoidreliability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The support body position is dynamically adjusted based on board thickness, allowing the impact transmission flank to be positioned optimally for each material thickness. This dynamic adjustment ensures precise impact transmission while maintaining safe distance from the spring, simultaneously achieving manufacturing precision and reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The support body is pre-positioned at appropriate distances from the impact transmission element before use, ensuring that the impact transmission flank will not contact the spring even when working with thinner boards. This preliminary positioning prevents potential damage while maintaining effective impact transmission.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the impact transmission flank is positioned farther from the support flank for thicker boards, then the reliability is improved by avoiding spring contact, but the manufacturing precision worsens due to reduced engagement effectiveness

Engineering Contradiction:
Improveprotection against spring breakageVSAvoidengagement precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The support body position is adjusted dynamically according to board thickness, allowing the impact transmission flank to achieve optimal engagement distance for each material thickness. This ensures reliable operation with thicker boards while maintaining sufficient engagement precision, resolving the contradiction between reliability and manufacturing precision.

Inventive Principle:
Principle #15Dynamics

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

This adjustment allows the hammer arrangement to be adapted to different board thicknesses, ensuring safe and effective engagement without risking the spring, thereby protecting the workpiece and ensuring proper impact transmission.

Implementation Method 1

a striking mass (2) that can be displaced along a guide (1) in a striking direction (S) on an anvil (3)

Methodology Applied
Scientific EffectImpact force: Impact Force

Data Source

PatentEP3130725B1Hammer assembly for parquet or panel laying
Publication Date: 2018.06.13 WOLFCRAFT GMBH
  • EP3130725B1 patent drawingFigure 1
  • EP3130725B1 patent drawingFigure 2
  • EP3130725B1 patent drawingFigure 3

AI summary

The invention relates to a hammer assembly with a striking mass (2) that is displaceable along a guide (1) in a striking direction (S) on an anvil (3) and a striking transmission element (4), which has a striking transmission flank (5) extending in the striking direction (S) and having an edge edge (5') for bearing against a striking side (32) of a workpiece (30) and a bearing flank (7) for bearing on a support side (33) of the workpiece (30). Crucially, the distance (H1, H2, H3) of the edge edge (5') of the striking transmission flank (5) from the bearing flank (7) is adjustable, wherein the bearing flank (7) is formed by a support body (6) which is connected to the striking transmission element (4) in a positionally adjustable manner in an adjustment direction (V).