Rotation Unit With Axial Holding and Replaceable Conveying Member
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Solution Overview
Problem
Existing rotation units face issues with phase shifts and difficulty in attaching and replacing conveying force applying units due to the use of materials with varying degrees of flexibility, leading to potential misalignment and reduced versatility.
Innovation Solution
A rotation unit design featuring a holding unit with a shaft hole that fixes to the rotation shaft by sliding in the axis direction, allowing for attachment and detachment of the conveying force applying unit in a direction crossing the axis, using a base portion with a fitting hole and contact part that deforms for easy installation and replacement, and incorporating a fixing unit to secure the unit to the shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the impeller boss is made elastic to widen the opening portion for attaching the tongue piece portion, then the ease of manufacture is improved, but the reliability deteriorates due to phase shift of the impeller boss with respect to the shaft
Solution Approach 1:
The invention divides the impeller structure into three separate components: the shaft, the impeller boss (made of rigid material), and the tongue piece portion (made of elastic material). This segmentation allows each component to be optimized independently - the boss can be rigid for phase stability while the tongue piece can be elastic for ease of attachment, resolving the contradiction between manufacturing ease and phase stability.
Solution Approach 2:
The invention applies different material properties to different parts of the system. The impeller boss is made of rigid material (metal or hard resin) to maintain phase stability, while only the tongue piece portion is made of elastic material to provide ease of attachment. This local differentiation of material quality resolves the contradiction by applying elasticity only where needed for attachment while maintaining rigidity where phase stability is critical.
2Ease of operation
If the tongue piece portion is made of soft elastic material, then the ease of operation is improved for attachment, but the manufacturing precision deteriorates due to difficulty in controlling phase position
Solution Approach 1:
By segmenting the structure into a rigid boss and a soft tongue piece, the invention allows the boss to provide precise phase positioning while the tongue piece provides easy attachment. The rigid boss maintains manufacturing precision for phase control, while the elastic tongue piece enhances ease of operation during attachment.
Solution Approach 2:
The invention applies soft elastic material only to the tongue piece portion where ease of attachment is needed, while the boss remains rigid for precise phase positioning. This local application of different material qualities resolves the contradiction between ease of operation and manufacturing precision.
3Adaptability or versatility
If the opening portion of the impeller boss is widened to attach the tongue piece portion, then the adaptability is improved, but the manufacturing precision deteriorates due to deformation of the elastic boss
Solution Approach 1:
The invention separates the attachment function (tongue piece portion) from the structural support function (impeller boss). The boss maintains its dimensional accuracy and does not need to be widened, while the tongue piece portion provides the adaptability for attachment. This segmentation resolves the contradiction between adaptability and manufacturing precision.
Solution Approach 2:
The invention makes only the tongue piece portion elastic to provide adaptability for attachment, while the boss remains rigid to maintain manufacturing precision. The elastic material is applied locally where adaptability is needed without compromising the dimensional accuracy of the rigid boss structure.
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
This design suppresses phase shifts, enhances versatility by allowing common use across different apparatus specifications, and simplifies the replacement process while maintaining reliable conveying force application.
Implementation Method 1
a holding unit provided between the rotation shaft and the conveying force applying unit, and configured to hold the conveying force applying unit... the holding unit includes a shaft hole through which the rotation shaft passes, and is fixed in a state of being attached to the rotation shaft by sliding in an axis direction of the rotation shaft
Implementation Method 2
the base portion provided with a fitting hole that fits an outer circumference of the holding unit and an opening portion in communication with the fitting hole... the base portion is configured to deform
Data Source
AI summary
A holding unit of a rotation unit includes a shaft hole through which a rotation shaft passes, and is fixed in a state of being attached to the rotation shaft by sliding in an axis direction of the rotation shaft. A conveying force applying unit includes a base portion provided with a fitting hole that fits an outer circumference of the holding unit and an opening portion in communication with the fitting hole, and a contact part provided to the base portion. The base portion is configured to deform, and the conveying force applying unit is configured to be attached to and detached from the holding unit via the opening portion in a direction crossing the axis direction of the rotation shaft.