Propeller Coupler Axial Load Distribution Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional propeller attaching devices face reliability issues when subjected to strong winds, as the load on the resilient body can compromise the attachment of the propeller to the output shaft of a motor.
Innovation Solution
A propeller attaching device comprising a coupler with a base and a first receiving portion, a movable body with a second receiving portion, and a resilient body that presses the movable body. This configuration allows for the attachment and detachment of the propeller by rotating it in the circumferential direction, while the resilient body ensures the propeller is securely attached and restricted from axial and circumferential movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a resilient body is used to attach the propeller to the output shaft, then the propeller can be easily attached and detached, but the attachment reliability is reduced when strong wind loads act on the propeller
Solution Approach 1:
The attachment device is divided into multiple functional components: a resilient body for easy attachment/detachment, a movable body with a second receiving portion for load bearing, and a coupler with a first receiving portion for positioning. This segmentation allows each component to specialize in one function, maintaining ease of operation while improving reliability through the movable body that prevents resilient body deformation under strong wind loads.
2Device complexity
If the resilient body directly supports the propeller attachment, then the structure is simple, but the resilient body deforms under strong wind loads reducing attachment reliability
Solution Approach 1:
The movable body acts as an intermediary between the resilient body and the propeller attachment portion. It transfers the attachment function to the resilient body while bearing the load through its second receiving portion, preventing the resilient body from deforming under strong wind loads. This intermediary structure maintains relative simplicity while significantly improving reliability.
3Reliability
If the propeller is securely restricted in axial and circumferential directions, then attachment reliability is improved, but the device complexity increases
Solution Approach 1:
The first receiving portion of the coupler and the second receiving portion of the movable body are merged to form a unified attachment system. The first receiving portion restricts axial movement while the second receiving portion restricts circumferential rotation, achieving comprehensive secure attachment through the coordinated action of integrated components rather than separate complex mechanisms.
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 proposed solution enhances the attachment reliability of the propeller by distributing the axial load effectively and preventing deformation of the resilient body, thus maintaining secure attachment even under strong wind conditions.
Implementation Method 1
a resilient body that presses the movable body in the first direction and rotates integrally with the coupler
Data Source
AI summary
A propeller attaching device includes a coupler that rotates integrally with an output shaft of a motor, a movable body, and a resilient body. The coupler allows attachment/detachment of an attachment portion of the motor by rotation of the propeller in the circumferential direction and restricts the movement of the propeller in an axial direction. The movable body includes a second receiving portion, and is supported by the coupler so as to be movable in the axial direction. The attachment/detachment position is a position where attachment/detachment of the attachment portion to/from the first receiving portion is allowed. The restriction position is positioned in a first direction relative to the attachment/detachment position, the first direction extending from the other end to one end of the output shaft in the axial direction of the output shaft, and restricts the rotation of the propeller in the circumferential direction relative to the base.