Power Tool Hook With Shock Absorber

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Solution Overview

Problem

Existing power tool tethering systems are prone to damage from shock loads when the tool is suspended, as the housing and attachment portions can break under the impact.

Innovation Solution

A hook system with a compressible shock absorber, comprising an elastic member and a compression spring, is integrated between the hook body and support to absorb shock loads, preventing damage to the hook support and power tool housing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a strap with cord is used to tether the power tool body to a hook portion, then the power tool body can be suspended and prevented from falling, but the housing and attachment portion may break under shock load

Engineering Contradiction:

Improvesuspension reliabilityVSAvoidhousing strength

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

A shock absorber is introduced as an intermediary component between the hook body and hook support. This mediator absorbs the shock load generated when the power tool is suspended, preventing the force from being transmitted to and breaking the housing and attachment portion, while still maintaining the suspension function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shock absorber provides beforehand cushioning by being pre-installed between the hook body and hook support. When suspension occurs, the shock absorber is already in place to cushion the impact, preventing damage before it can occur to the housing and attachment portion.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If the hook body is rigidly connected to the hook support, then structural strength is maximized, but shock load causes damage to the housing and attachment portion

Engineering Contradiction:

Improvehook structural strengthVSAvoidshock load impact

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The shock absorber serves as a mediator between the rigid hook body and hook support. It allows the hook structure to maintain its strength while intercepting and absorbing the harmful shock load, preventing it from reaching the power tool housing and attachment portion.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shock absorber converts the harmful shock load into beneficial compression force. By absorbing the impact energy through compression, the harmful effect is transformed into a controlled mechanical response that protects the system rather than damages it.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 shock absorber effectively absorbs shock loads when the power tool is suspended, preventing damage to the hook support and power tool housing, ensuring the tool remains functional and secure.

Implementation Method 1

a shock absorber being compressible and located between the hook body and the hook support to absorb shock on the hook body

Methodology Applied

Scientific EffectShock absorption: Damping

Implementation Method 2

a shock absorber being compressible and located between the hook body and the hook support to absorb shock on the hook body

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS11772254B2Power tool and hook

Publication Date: 2023.10.03 MAKITA CORP

AI summary

A power tool and a hook can withstand a shock load applied when being suspended. The hook includes a hook body, a hook support supporting the hook body, and a shock absorber that is compressible and located between the hook body and the hook support to absorb shock on the hook body.