Clamp Unit With Inclined Pressing Body for Multi-Shaft Fit

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Solution Overview

Problem

Existing clamping devices require multiple components tailored to different shaft sizes, increasing production costs due to the need for customized parts.

Innovation Solution

A clamping device with a modular design featuring a clamping unit and bracket system, where the clamping unit includes a case with a movable operation member, a pressing body, and biasing springs, allowing for adjustable protrusion and reduced component variability across different shaft diameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If components are customized for different shaft sizes, then clamping precision is improved, but manufacturing cost increases and component variety increases

Engineering Contradiction:
Improveclamping precisionVSAvoidcomponent variety
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The clamping unit is designed as a universal component that can accommodate multiple shaft sizes through adjustable mechanisms. The pressing body can be positioned at different locations along the axial direction, and the inclined surface angle can be adjusted, allowing the same clamping unit to adapt to different shaft diameters without requiring multiple specialized components for each size.

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

Solution Approach 2:

The clamping unit incorporates dynamic adjustment capabilities where the pressing body position and inclined surface angle can be modified based on the shaft size being clamped. This dynamic adaptability allows a single component design to serve multiple functions across different applications, reducing the need for multiple fixed-size components.

Inventive Principle:
Principle #15Dynamics

2Reliability

If components are customized for different shaft sizes, then clamping performance is improved, but production cost increases

Engineering Contradiction:
Improveclamping performanceVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

By designing the clamping unit as a universal component with adjustment mechanisms, the patent eliminates the need to manufacture multiple specialized components for different shaft sizes. This single-component-multiple-uses approach significantly reduces production costs while maintaining reliable clamping performance through proper adjustment for each application.

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

Solution Approach 2:

The patent utilizes parameter changes (adjustable pressing body position, variable inclined surface angle) to adapt the clamping unit to different shaft sizes. This allows the same physical component to achieve optimal clamping performance for various dimensions without requiring different component designs, thereby reducing manufacturing costs.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If multiple component sizes are prepared, then adaptability to different shafts is improved, but inventory complexity increases

Engineering Contradiction:
Improveadaptability to different shaftsVSAvoidinventory complexity
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The clamping unit is designed as a universal component that can serve multiple shaft sizes through adjustment mechanisms. Instead of maintaining inventory of multiple specialized components for different shaft diameters, the patent uses a single adjustable clamping unit design, significantly simplifying inventory management while maintaining full adaptability.

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

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 a common clamping unit to be used across various shaft diameters, reducing the number of components needed and lowering production costs while maintaining effective clamping and ease of use.

Implementation Method 1

a first biasing member that biases the operation member in the pressing promotion direction

Methodology Applied
Scientific EffectElastic force: Elasticity

Implementation Method 2

The inclined surface is configured to increase the protruding amount of the pressing body from the case when the movable body changes in position as the operation member moves in the pressing promotion direction

Methodology Applied
Scientific EffectMechanical advantage: Mechanical Advantage

Data Source

PatentEP3896294B1Clamp unit and clamp device
Publication Date: 2024.04.24 NABEYA BI TECH KK
  • EP3896294B1 patent drawingFigure 1~2
  • EP3896294B1 patent drawingFigure 3
  • EP3896294B1 patent drawingFigure 4

AI summary

A clamping unit includes a case with a contact surface, an operation member arranged movable in a pressing cancellation direction and a pressing promotion direction relative to the case, a pressing body arranged in a movable manner in the case to oppose the contact surface, and a movable body between the pressing body and contact surface. At least one of the contact surface, movable body, and pressing body includes an inclined surface. The inclined surface increases a protruding amount of the pressing body from the case when the movable body changes in position as the operation member moves in the pressing promotion direction and eases pressing of the movable body against the pressing body when the movable body changes in position as the operation member moves in the pressing cancellation direction to permit a decrease in the protruding amount of the pressing body from the case.