Electric Tool Head Section Rotation with Mechanical Fragment Ejection

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Solution Overview

Problem

Conventional electric tools for locking and twisting off shear bolts require significant electric energy for the fragment ejecting mechanism, limiting their functionality and efficiency, especially when the head section needs to change direction.

Innovation Solution

The electric tool incorporates a motor section, head section, handle section, coupling section, and a fragment ejecting mechanism with a pushing portion and driving portion, allowing the head section to change direction radially and eject the fragment portion mechanically, reducing energy consumption by eliminating the need for continuous battery-powered operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an electromagnetic fragment ejecting mechanism is used, then the head section can rotate to improve accessibility, but electric energy consumption increases

Engineering Contradiction:
Improvehead section rotatabilityVSAvoidelectric energy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent replaces the electromagnetic fragment ejecting mechanism with a purely mechanical ejection system. The mechanical fragment ejecting mechanism uses a spring-loaded piston that is activated by the rotation of the head section itself, eliminating the need for additional electromagnetic actuators and reducing overall energy consumption while maintaining the rotational capability for improved accessibility.

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

Solution Approach 2:

The head section's rotation serves dual purposes: it provides improved accessibility for fastening operations and simultaneously activates the fragment ejection mechanism. The mechanical connection between the rotating head section and the ejection piston means that the operator's own rotational input both repositions the tool and ejects the fragment, making the system self-sufficient without requiring separate power sources.

Inventive Principle:
Principle #25Self-service

2Use of energy by moving object

If a mechanical fragment ejecting mechanism is used, then electric energy consumption is reduced, but the head section cannot rotate

Engineering Contradiction:
Improveelectric energy consumptionVSAvoidhead section rotatability
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The head section is designed to perform multiple functions simultaneously: it transmits rotational force to the fastener, provides rotational positioning for accessibility, and activates the fragment ejection mechanism through its own rotation. This multi-functionality eliminates the need for separate electromagnetic actuators, reducing energy consumption while maintaining operational flexibility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The fragment ejection mechanism is designed to be dynamically activated during the normal rotation of the head section. The mechanical linkage between the rotating head and the ejection piston ensures that the ejection action occurs naturally during the operator's rotational input, allowing the system to adapt to different operational positions without requiring additional power sources.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the head section is made detachably coupled, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improvehead section detachabilityVSAvoidcoupling mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool is divided into distinct modular components: the handle section, the coupling section, and the head section. This segmentation allows the head section to be easily detached and replaced while maintaining a simple, standardized coupling interface. The coupling section serves as a universal connector that simplifies the overall assembly design despite enabling modularity.

Inventive Principle:
Principle #1Segmentation

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

Enables efficient twisting off and ejection of shear bolt fragments with reduced electric energy usage, allowing the tool to operate effectively even when the head section is rotated, enhancing usability and battery life.

Implementation Method 1

an electric motor for generating a rotating force, the electric motor has a motor shaft

Methodology Applied
Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

the pushing portion is disposed in the head section and is configured to push the fragment portion out of the inner socket

Methodology Applied
Scientific EffectMechanical force: Mechanical Force

Data Source

PatentUS11267109B2Electric tool
Publication Date: 2022.03.08 TECHWAY INDAL
  • US11267109B2 patent drawing
  • US11267109B2 patent drawing
  • US11267109B2 patent drawing

AI summary

An electric tool includes a motor section, a head section, a handle section, a coupling section, a battery, and a fragment ejecting mechanism. The head section is configured to twist off the fragment portion of a shear bolt. The coupling section detachably couples the head section to the motor section and allows the pointing direction of the front end of the head section to be changed along the radial direction of the motor shaft in the motor section. The fragment ejecting mechanism has a pushing portion and a driving portion. The pushing portion is provided in the head section and is configured to push out the twist-off fragment portion. The driving portion is provided at the coupling section and is configured to drive the pushing portion. The electric tool can twist off and then eject the fragment portion of a shear bolt even after the head section has changed direction.