Single Output Shaft Clutch Drive for High- and Low-Speed Juicing

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Solution Overview

Problem

Existing drive devices that combine a mixer and a juicer face challenges in efficiently rotating a single output shaft at both high and low speeds without causing noise and waterproofing issues associated with dual shaft configurations.

Innovation Solution

A drive device that utilizes a single motor to rotate a single output shaft at high or low speed through a clutch mechanism, reduction gears, and elastic support, allowing for seamless transition between high-speed mixer operation and low-speed juicer operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a dual shaft configuration is used to rotate at high and low speeds, then both mixer and juicer functions can be achieved, but noise and waterproofing problems occur due to interference between the two shafts

Engineering Contradiction:
Improvedual function capabilityVSAvoidnoise
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent merges the high-speed and low-speed shafts into a single integrated output shaft structure. The clutch mechanism selectively engages different portions of this unified shaft to achieve high-speed mixing or low-speed juicing, eliminating the interference and noise problems caused by separate dual shaft configurations while maintaining both appliance functions.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single output shaft is designed with multi-functional capability, serving both high-speed rotation for mixing and low-speed rotation for juicing through the clutch mechanism. This universal shaft design eliminates the need for separate shafts, reducing structural complexity and avoiding the harmful effects of dual shaft interference.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a dual shaft configuration is used to rotate at high and low speeds, then both mixer and juicer functions can be achieved, but waterproofing problems occur due to interference between the two shafts

Engineering Contradiction:
Improvedual function capabilityVSAvoidwaterproofing
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the high-speed and low-speed shafts into a single integrated output shaft structure. The clutch mechanism selectively engages different portions of this unified shaft to achieve high-speed mixing or low-speed juicing, eliminating the interference and noise problems caused by separate dual shaft configurations while maintaining both appliance functions.

Inventive Principle:
Principle #5Merging (Combining)

3Object-generated harmful factors

If a single output shaft is used to rotate at high or low speed, then noise and waterproofing issues are resolved, but a mechanism is needed to switch between high and low speed rotation

Engineering Contradiction:
Improvenoise reductionVSAvoidclutch mechanism complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The clutch mechanism acts as an intermediary device that selectively engages different transmission paths within the single output shaft. By using this mediator component, the system can switch between high-speed and low-speed rotation modes without requiring complex dual shaft configurations, thereby reducing noise while maintaining functional versatility.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Volume of moving object

If a single output shaft is used to rotate at high or low speed, then the device structure becomes more compact, but a clutch mechanism is required to enable speed switching

Engineering Contradiction:
Improvedevice compactnessVSAvoidclutch mechanism complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent merges the high-speed and low-speed shafts into a single integrated output shaft structure. The clutch mechanism selectively engages different portions of this unified shaft to achieve high-speed mixing or low-speed juicing, eliminating the interference and noise problems caused by separate dual shaft configurations while maintaining both appliance functions.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The clutch mechanism and speed switching components are nested within the single output shaft structure, allowing the speed switching functionality to be integrated compactly without requiring additional external mechanisms. This nesting approach maintains device compactness while enabling high-speed and low-speed rotation modes.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 solution enables efficient operation of both high-speed mixing and low-speed juicing using a single output shaft, thereby resolving noise and waterproofing issues inherent in dual shaft designs, and allowing for a compact and versatile kitchen appliance.

Implementation Method 1

a clutch that moves up-down, and when moving downward, engages with a rotor shaft top gear formed on a motor shaft of the drive motor

Methodology Applied
Scientific EffectMechanical engagement: Mechanical Fastener

Implementation Method 2

a reduction gear that is gear-engaged between the rotor shaft gear and the output shaft gear, to reduce a rotational speed of the output shaft gear compared to a rotational speed of the motor shaft

Methodology Applied
Scientific EffectGear reduction: Gear

Implementation Method 3

a rotor shaft gear that is inserted into the motor shaft to rotate together with the motor shaft, and is elastically supported so that when the clutch moves downward, contacts with the clutch, to move downward

Methodology Applied
Scientific EffectElastic support: Elasticity

Data Source

PatentEP4544970A1Driving device that rotates single output shaft at high or low speed, and juicer that can be used as blender and that uses same driving device
Publication Date: 2025.04.30 HUROM CO LTD
  • EP4544970A1 patent drawingFigure 1~2
  • EP4544970A1 patent drawingFigure 3
  • EP4544970A1 patent drawingFigure 4

AI summary

The present disclosure relates to a drive device that rotates a single output shaft at high or low speed and juicer combined with mixer using said drive device, and the drive device that rotates a single output shaft at high or low speed according to the present disclosure is characterized to include a drive motor, a clutch that moves up-down, and when moving downward, is engaged to a rotor shaft top gear formed on a motor shaft of the drive motor, to rotate together with the motor shaft; an output shaft whose lower end part is engaged to an upper end part of the clutch to rotate together with the clutch; an output shaft gear that is inserted into the output shaft to rotate, and when the clutch moves upward, is engaged with the clutch to rotate together with the clutch; a rotor shaft gear that is inserted into the motor shaft to rotate together with the motor shaft, and is elastically supported so that when the clutch moves downward, contacts with the clutch, to move downward; and a reduction gear that is gear-engaged between the rotor shaft gear and the output shaft gear, to decelerate a rotational speed of the output shaft gear compared to a rotational speed of the motor shaft.