Rotary Striking Member for Dot-Shaped Surface Preparation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional surface preparation methods using grinding tools or rotary tools with brushes often result in reduced paint adhesiveness due to scratch patterns, while blast methods generate excessive waste and are inefficient for large-scale preparations.

Innovation Solution

A surface treatment system featuring a surface treatment member with a rotatable base, an annular striking member with protruding portions, and a shaft member, which imparts an impact to the surface treatment object and retracts swiftly after contact, forming dot-shaped concaves and convexes without scratch patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a grinding tool or rotary tool with brush is used for surface preparation, then the surface can be treated easily, but scratch patterns are formed that reduce paint adhesiveness

Engineering Contradiction:

Improveease of surface preparationVSAvoidpaint adhesiveness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The striking member is divided into multiple protruding portions (e.g., 3-10 protrusions) distributed around the annular body. Each protrusion independently impacts the surface to create dot-shaped concaves and convexes, avoiding continuous scratch patterns while maintaining ease of operation through the rotary mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The striking member rotates periodically to repeatedly impact the surface with its protruding portions. This periodic rotation creates a pattern of dot-shaped凹凸 through multiple discrete impact points rather than continuous scratching, improving paint adhesiveness while keeping the operation simple.

Inventive Principle:

Principle #19Periodic action

2Reliability

If a blast method is used for surface preparation, then paint adhesiveness is improved, but large amounts of waste are generated and large-sized preparation is needed in advance

Engineering Contradiction:

Improvepaint adhesivenessVSAvoidwaste generation

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent replaces the blast method (which uses particle flow and compression) with a direct mechanical impact system. The striking member with protruding portions mechanically impacts the surface to create anchoring凹凸, achieving similar paint adhesiveness improvement without generating large amounts of waste material.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Instead of requiring large-sized preparation areas as in blast methods, the striking member concentrates its impact on localized points through its protruding portions. This creates dot-shaped concaves and convexes at specific locations, achieving effective surface preparation with minimal material removal and waste generation.

Inventive Principle:

Principle #3Local quality

3Area of stationary object

If a striking member is designed to be fully exposed during rotation, then surface treatment coverage is improved, but the striking member cannot retract quickly after impact

Engineering Contradiction:

Improvesurface treatment coverageVSAvoidretraction speed

Core Design Contradiction:

Area of stationary objectVSSpeed

Solution Approach 1:

The striking member is designed with dynamic characteristics that allow it to be partially exposed during rotation (for adequate surface coverage) while maintaining the ability to retract quickly after impact. The protruding portions are positioned and dimensioned to provide sufficient exposure for effective surface treatment while allowing rapid retraction to prevent scratch pattern formation.

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

The system enhances paint adhesiveness by creating a dot-shaped pattern on the surface treatment object, while allowing for efficient and easy surface preparation similar to conventional rotary tools, with reduced waste generation.

Implementation Method 1

a portion of the striking member is configured to be exposed outside an outer periphery of the base by a centrifugal force when the surface treatment member is rotated

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP4549089A1Surface treatment member and surface treatment system

Publication Date: 2025.05.07 JAPAN PROD & SALES CO LLC

Figure 1A~1D
Figure 2~3B
Figure 4A~4B

AI summary

Provided is a surface treatment member 1 used by being mounted on a rotary member in a surface treatment system including the rotary member. The surface treatment member 1 includes: a base 10; a striking member 40 having an annular body portion and a protruding portion that protrudes from the body portion; and a shaft member 50 disposed in a region on an inner side of the body portion. When the surface treatment member 1 is viewed along an imaginary axis A about which the base 10 is to be rotated, a portion of the striking member 40 is exposed outside an outer periphery of the base 10 by a centrifugal force when the surface treatment member 1 is rotated, and an entirety of the striking member 40 is retractable toward inside an imaginary circle that passes over an outermost periphery of the base 10 about the imaginary axis A after the striking member 40 impinges on a surface treatment object. According to the surface treatment member 1 of the present invention, by using the surface treatment member 1 in the surface treatment system that includes the rotary member, it is possible to increase the adhesiveness of a paint when the surface preparation is performed, and the surface preparation can be performed easily.