Detachable Handle Elements for Compact Construction Mixer Storage

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Solution Overview

Problem

Conventional hand-operated construction mixing machines are bulky and difficult to transport and store efficiently, especially in large containers, due to their expansive handle designs.

Innovation Solution

A hand-operated construction mixing machine with a handle device featuring detachable U-shaped handle elements, allowing for a reduction in the longitudinal extent of the handle, which can be easily removed for space-saving transport and storage, while maintaining reliable two-hand operation and protection of the housing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If wide handles are used for two-handed operation, then ease of operation is improved, but volume of moving object increases

Engineering Contradiction:

Improvetwo-handed operationVSAvoidvolume of handle device

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The handle device is divided into separate components: a central housing and detachable handle elements. The handle elements can be removed independently, allowing the device to be segmented into a compact core for transport and full functionality when assembled for operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The handle device transitions from a static wide-handle configuration to a dynamic, reconfigurable structure. Handle elements can be attached or detached based on operational needs, allowing the device to adapt its configuration between transport and operation modes.

Inventive Principle:

Principle #15Dynamics

2Volume of moving object

If detachable handle elements are removed, then volume of moving object is reduced, but device complexity increases

Engineering Contradiction:

Improvevolume of handle deviceVSAvoidcomplexity of handle device

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The central housing serves multiple functions: it houses the drive motor, provides structural support, and serves as the connection point for handle elements. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4375019A1Manually operated construction mixing machine, in particular manually operated stirring machine for stirring and/or mixing building materials

Publication Date: 2024.05.29 COLLOMIX RUHR UND MISCHGERATE

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AI summary

The invention relates to a manually operated construction mixer, in particular a manually operated mixer for stirring and/or mixing building materials, comprising a handle (2) and a housing (3) in which a drive motor is at least partially enclosed, the drive motor having at least one drive shaft (4) which can be directly or indirectly connected to a mixing and/or stirring tool. The handle (2) has two U-shaped handle elements (5, 6) located on opposite sides of the housing (3) in the longitudinal direction (4) of the handle (2), preferably each with at least one handle (7, 8) spaced apart from the housing (3).According to the invention, at least one of the U-shaped handle elements (5, 6) is detachably and/or removablely held on the handle assembly (2) by means of a connecting device (11) to reduce the longitudinal extent of the handle assembly (2).