Angled Handle Strapping Device Servomotor Tensioner Ergonomics

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Solution Overview

Problem

Conventional strapping devices require significant manual force to lift and move the tensioner, leading to strain on the user's hand due to the need for a long trigger or handle, which can be ergonomically undesirable and uncomfortable.

Innovation Solution

A strapping device with an angled handle oriented between 15 degrees and 45 degrees relative to the strap axis, coupled with a drive assembly that includes a servomotor and cam system to move the tensioner away from the base, reducing the need for large manual forces and distributing the weight more ergonomically.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a long trigger or handle is used to lift and move the tensioner, then the manual force required is reduced, but the ergonomic comfort deteriorates due to hand strain

Engineering Contradiction:

Improvemanual force requiredVSAvoidergonomic comfort

Core Design Contradiction:

ForceVSEase of operation

Solution Approach 1:

The patent replaces the purely mechanical manual lifting system with an automated drive assembly that includes a servomotor and cam mechanism. The servomotor automatically moves the tensioner away from the base during operation, eliminating the need for users to apply large manual forces to lift the tensioner via a long trigger or handle.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the orientation parameter of the handle, positioning it at an angle between 15 and 45 degrees relative to the strap axis. This angular parameter change optimizes the distribution of the device's weight and reduces the mechanical advantage required from the user's hand, thereby improving ergonomic comfort while maintaining operational effectiveness.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If a long trigger is used to move the tensioner, then the operational capability is improved, but the device complexity increases

Engineering Contradiction:

Improveoperational capabilityVSAvoidtrigger length

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent substitutes the long mechanical trigger system with an automated drive assembly comprising a servomotor and cam mechanism. This automation eliminates the need for a long trigger, reducing structural complexity while preserving and even enhancing operational capability through automated tensioner movement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The drive assembly performs the function of moving the tensioner automatically without requiring direct manual intervention through a long trigger. The servomotor and cam system self-actuate to position the tensioner, making the system self-serving and reducing the need for complex manual manipulation mechanisms.

Inventive Principle:

Principle #25Self-service

3Power

If manual forces are applied to lift the tensioner, then the tensioning function is achieved, but user strain increases

Engineering Contradiction:

Improvetensioning functionVSAvoiduser strain

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the manual force application system with an automated drive assembly that uses a servomotor to move the tensioner. This substitution eliminates the direct transmission of user strain to the hand and arm muscles while maintaining the required tensioning power through automated mechanical actuation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The drive assembly acts as an intermediary between the user's operational input and the tensioner movement. The servomotor and cam mechanism mediate the force transmission, converting minimal user input into effective tensioner movement, thereby reducing direct user strain while achieving the necessary tensioning power.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 angled handle design and automated tensioner movement reduce user strain and improve ergonomic comfort, allowing for safer and more efficient strapping operations without requiring excessive manual force.

Implementation Method 1

a drive assembly that includes a servomotor and cam system to move the tensioner away from the base

Methodology Applied

Scientific EffectServomotor: Linear Motor

Implementation Method 2

a drive assembly that includes a servomotor and cam system to move the tensioner away from the base

Methodology Applied

Scientific EffectCam: Cam

Data Source

PatentEP3696100B1Strapping device and handle which can be coupled to the body of a strapping device

Publication Date: 2022.04.27 SAMUEL SON & CO USA INC

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AI summary

A strapping device includes a body (112), a tensioner, and a handle (104). The body can have a first body end (216), a second body end (220), and a base (116) extending between the first body end (216) and the second body end (220). The tensioner can be coupled with the body (112) and adjacent to the base (116), the body defining a strap axis (212) between tensioner and the base (116), the tensioner applies a force to a strap received by the body along the strap axis (212). The handle (104) can extend between a first handle end coupled with the first body end (216) and a second handle end coupled with the second body end (220). The handle (104) can be oriented at an angle relative to a plane parallel to the strap axis (212), the angle greater than or equal to 15 degrees and less than or equal to 45 degrees.