Ice Tray Drive Assembly to Eliminate Dead Space and Weak Fixing
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Solution Overview
Problem
Conventional ice making devices face challenges in assembling efficiency due to the formation of unnecessary spaces when attaching the drive part to the frame body, which affects the device's structural strength and size.
Innovation Solution
The ice making device utilizes the space created by attaching the drive part perpendicular to the output shaft as an attaching space for the ice detecting member, ensuring that the drive part is securely fixed to the frame body without forming a dead space, and employs a pawl piece and pawl insertion part structure with different abutting faces to enhance holding force and prevent disengagement during twisting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drive part is attached to the frame body by inserting the output shaft into a through hole and supporting it with a fixing pawl piece, then the drive part can be assembled to the frame body, but the fixing pawl piece and pawl piece fixing part cannot secure sufficient strength to endure the deformation
Solution Approach 1:
The patent changes the attachment direction from the output shaft direction to a direction perpendicular to the output shaft. The drive part is attached to the frame body by fitting the drive side attaching part to the frame body side attaching part along a direction perpendicular to the output shaft, eliminating the need for through holes and fixing pawl pieces while maintaining structural strength.
2Ease of manufacture
If the turning drive part is slid in the direction of the output shaft to fit the output shaft to the turning shaft, then the drive part can be assembled, but a dead space is formed on the outer side of the turning drive part making the device size unnecessarily larger
Solution Approach 1:
The patent attaches the drive part in a direction perpendicular to the output shaft rather than sliding it along the output shaft direction. This eliminates the formation of dead spaces on the outer side of the turning drive part and prevents unnecessary increase in device size while maintaining ease of assembly.
3Ease of manufacture
If the wall part on the outer side in the direction of the output shaft is removed to allow the turning drive part to slide, then the drive part can be assembled, but the strength of the frame body is decreased
Solution Approach 1:
The patent attaches the drive part in a direction perpendicular to the output shaft, which eliminates the need to remove any wall parts from the frame body. This maintains the structural strength and integrity of the frame body while still allowing for easy assembly of the drive part.
Data Source
AI summary
An ice making device may include an ice tray; a drive part which is provided with an output shaft to which the ice tray is attached and in which the ice tray is turned by turning of the output shaft; and a frame body to which the drive part is attached. A twisting operation is applied to the ice tray during a turning operation for separating ice pieces from the ice tray. The drive part may include a drive side attaching part. The frame body may include a frame body side attaching part. The frame body side attaching part and the drive side attaching part are fitted to each other along a direction that is perpendicular to the output shaft, thereby attaching the drive part to the frame body.