Rotating Shredder Body With Safety Interlock for Compact Storage

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Solution Overview

Problem

Existing shredding machines for large-sized waste are unsatisfactory in terms of shredding results, compactness, storage, transportation, handling of scraps, flexibility, and safety.

Innovation Solution

A shredding device with a shredding body, frame, and power supply, featuring a rotating shredding body, locking mechanism, compact design, and safety interfaces, along with a power supply chamber and heat dissipation mechanism, to enhance operation safety and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the shredding body is made rotatable to switch between working position and storage position, then the compactness and ease of storage are improved, but the device complexity increases due to addition of locking mechanism and rotation joint

Engineering Contradiction:
Improvestorage volumeVSAvoidstructural complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The shredding body is designed to be rotatable about a first axis, allowing it to dynamically switch between a working position (extending outward for operation) and a storage position (retracted for compact storage). This dynamic configuration enables the device to adapt its volume based on operational needs while maintaining structural integrity through the rotation joint and locking mechanism.

Inventive Principle:
Principle #15Dynamics

2Reliability

If safety interfaces and safety components are added to prevent unauthorized operation, then the safety is improved, but the device complexity increases

Engineering Contradiction:
Improveoperation safetyVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A safety interface is provided that requires a safety component to be properly engaged before the device can operate. This preliminary safety check prevents unauthorized or unsafe operation by blocking the control signal path unless the safety component is in the correct position, thereby ensuring operator protection without requiring complex continuous monitoring systems.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The safety component acts as an intermediary element between the operator and the shredding body. It mediates the control signal flow, allowing power transmission only when properly engaged, thus providing a simple yet effective safety mechanism that prevents accidental activation while maintaining system simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Duration of action of moving object

If the power supply device accommodates large battery packs for extended operation, then the duration of action is improved, but the weight and volume of the device increase

Engineering Contradiction:
Improveoperating durationVSAvoiddevice weight
Core Design Contradiction:
Duration of action of moving objectVSWeight of moving object

Solution Approach 1:

The power supply device is segmented into a modular battery pack that can be independently accommodated in the power supply chamber. This segmentation allows for flexible configuration where large battery packs can be used for extended operating duration when needed, while the modular design enables easy removal or replacement, effectively managing the weight-tradoff based on specific operational requirements.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4706374A2Shredder apparatus
Publication Date: 2026.03.11 TECHTRONIC CORDLESS GP
  • EP4706374A2 patent drawingFigure 1A
  • EP4706374A2 patent drawingFigure 1B~1C
  • EP4706374A2 patent drawingFigure 1D~2

AI summary

The present invention discloses a shredding device. The shredding device according to one or more embodiments of the present invention comprises: a shredding body for shredding materials; a frame for supporting the shredding body; and a power supply device that provides electric power to the shredding body. The shredding body comprises a housing, and the housing is provided with a power supply chamber for accommodating at least part of the power supply device. The shredding device according to the present invention features a compact structure, and is easy and safe to operate.