Tattooing Device Cam Link Mechanism for Vibration Reduction

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Solution Overview

Problem

Conventional tattooing apparatuses experience severe vibrations and noise due to the separate rotation bar mechanism, leading to reduced driving output and difficulty in precisely representing tattoos, and they lack adjustable needle length, requiring multiple apparatus models for different skin conditions.

Innovation Solution

The apparatus incorporates a cam link to offset rotational inertia and minimize friction, using bearing members for rolling contact between the cam member and connecting rod, and includes a needle adjusting mechanism to change the exposed needle length, with an anti-vibration tube to prevent vibration transmission and a hook connection for easy assembly/disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a separate rotation bar mechanism is used to reciprocate the straight moving bar, then the tattoo needle can be driven to move back and forth, but severe vibrations and noise are generated

Engineering Contradiction:

Improveneedle reciprocating movementVSAvoidvibrations and noise

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent merges the rotation bar and straight moving bar into a single integrated cam link mechanism. The cam link is directly coupled to the cam member, eliminating the separate rotation bar component. This integration allows the reciprocating motion to be generated without the severe vibrations and noise that occurred with the separate rotation bar mechanism, while maintaining the needle's back-and-forth movement capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a cam link as an intermediary component between the cam member and the straight moving bar. The cam link serves as a mediator that transforms the rotational motion of the cam member into linear reciprocating motion of the straight moving bar, while the bearing members reduce friction and vibration at the contact points between these components.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the rotation bar synchronizes with the straight moving bar, then the needle reciprocates, but the driving motor output is reduced due to vibration load

Engineering Contradiction:

Improveneedle reciprocating actionVSAvoiddriving motor output

Core Design Contradiction:

ProductivityVSPower

Solution Approach 1:

By merging the rotation bar and straight moving bar into a single cam link component, the patent eliminates the synchronization conflict that caused severe vibrations. The integrated design allows the cam link to smoothly transfer motion from the cam member to the straight moving bar without creating resonant vibrations that would load the driving motor, thereby maintaining motor output while preserving needle reciprocating action.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If a fixed needle length is used, then the apparatus structure is simple, but multiple apparatus models are required for different skin conditions

Engineering Contradiction:

Improveapparatus structureVSAvoidneedle length adjustment

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic needle length adjustment mechanism that allows the exposed needle length to be changed during operation. The needle cartridge can be adjusted relative to the housing, enabling the same apparatus to accommodate different skin conditions and tattoo requirements. This dynamic adjustment capability provides versatility without requiring multiple separate apparatus models.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent creates a universal apparatus that can perform multiple tattooing functions by allowing needle length adjustment. A single apparatus model can handle various skin conditions and tattoo types by modifying the exposed needle length, eliminating the need for multiple specialized apparatus models and reducing overall device complexity.

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

This design reduces vibrations and noise, maintains a sturdy connection between components, allows for adjustable needle length, and enhances usability by minimizing power consumption and allowing a single apparatus to accommodate various skin conditions.

Implementation Method 1

using bearing members for rolling contact between the cam member and connecting rod

Methodology Applied

Scientific EffectRolling contact: Ball Bearing

Implementation Method 2

minimize friction, using bearing members for rolling contact

Methodology Applied

Scientific EffectFriction reduction: Friction

Implementation Method 3

a cam link for offsetting a rotational inertia generated between a cam member and a connecting rod

Methodology Applied

Scientific EffectRotational inertia: Moment of Inertia

Implementation Method 4

an anti-vibration tube to prevent vibration transmission

Methodology Applied

Scientific EffectVibration absorption: Damping

Data Source

PatentEP2457461B1Tattooing device

Publication Date: 2018.10.10 BOMTECH ELECTRONICS

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AI summary

A tattooing apparatus includes a tattoo needle; and upward and downward moving means to transmit a rotating force of a driving motor to the tattoo needle. The upward and downward moving means consists of a cam structure to convert a rotary movement by the rotating force of a driving motor into a linear movement, and includes a bearing member for rolling contact to reduce vibrations and noises.