Handheld Processing Tool Suspension Mechanism with Nested Handle Contour

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Solution Overview

Problem

Existing suspension means for handheld processing tools are heavily influenced by accessories, leading to increased outer contour and geometry, compromising safety and convenience.

Innovation Solution

The suspension means is arranged around the handle's contour with an axial displacement region and a transverse suspension region, allowing for multiple locking positions without significantly enlarging the tool's dimensions, featuring a hook-shaped end for secure attachment and a compression spring for easy operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional suspension means are used, then suspension function is provided, but outer contour and corner dimension are significantly increased

Engineering Contradiction:

Improvesuspension safetyVSAvoidouter contour

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The suspension means is integrated into the handle contour of the processing tool, with the suspension element arranged within the handle's outer contour. The suspension element can be inserted into the housing and locked in position, allowing the suspension function to be nested within the existing tool geometry without significantly increasing the outer contour or corner dimension.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The suspension means utilizes the axial displacement region within the handle contour, moving the suspension element along the axial direction of the handle. This allows the suspension function to be achieved in the axial dimension rather than increasing the radial outer contour, thereby maintaining a compact tool geometry.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If accessories are mounted on the processing tool, then functionality is enhanced, but suspension stability is heavily influenced and outer contour increases

Engineering Contradiction:

Improveaccessory mountingVSAvoidsuspension stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The suspension means is designed to be independent of accessory mounting, providing a universal suspension function that works regardless of which accessories are attached to the processing tool. The suspension element is integrated into the handle contour and provides stable suspension without being influenced by the weight or position of accessories.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If suspension means protrude from the tool, then suspension is enabled, but safety risk from injury increases

Engineering Contradiction:

Improvesuspension capabilityVSAvoidinjury risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The suspension means is nested within the handle contour, with the suspension element arranged to not protrude beyond the outer contour of the processing tool when in the retracted position. This eliminates the safety risk of injury from protruding parts while maintaining suspension capability when needed.

Inventive Principle:

Principle #7Nested doll (Nesting)

4Reliability

If suspension means are added to the processing tool, then suspension function is provided, but device complexity increases

Engineering Contradiction:

Improvesuspension functionVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The suspension means is merged with the handle contour of the processing tool, combining the suspension function with the existing tool structure. The suspension element utilizes the handle's outer contour and internal axial displacement region, integrating multiple functions into a unified structure rather than adding separate components.

Inventive Principle:

Principle #5Merging (Combining)

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

Enhances safety by minimizing protrusions, reduces damage risk, and maintains convenience by allowing flexible handling and suspension adjustment based on tool weight distribution.

Implementation Method 1

The resilient guidance is performed by a compression spring

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12358119B2Handheld processing tool having a suspension means

Publication Date: 2025.07.15 ROBERT BOSCH GMBH

AI summary

A handheld processing tool includes (i) a housing, (ii) at least one handle connected to the housing for guiding the processing tool, and (iii) a suspension mechanism configured to suspend the processing tool. The suspension mechanism is arranged, with an axial displacement region and a suspension region extending substantially transversely thereto, around at least part of a contour of the handle such that the suspension mechanism, in a first locking position, is inserted into the housing in a largely surface-neutral manner and, in at least one second locking position, is ejected out of the housing. The suspension region, in the at least one second locking position, can be rotated by at least one opening angle of at least 90° with respect to the first locking position in a tangentially locking manner.