Ventilation Apparatus Ring Attachment Guide Wall
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Solution Overview
Problem
Existing ventilation apparatuses removably attachable to garments require complex procedures for attachment and removal, involving precise positioning and significant rotational adjustments, which complicates the operability and ease of use.
Innovation Solution
A ventilation apparatus design featuring a motor, fan, and a ring configuration with projections and guide walls that allow for simplified attachment by guiding the ring rearward and rotating it circumferentially to engage with engagement surfaces, eliminating the need for precise circumferential positioning and reducing the risk of disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ring is attached to the housing using a conventional retention mechanism, then the ring can be securely held, but the attachment procedure requires considerable rotational angle and precise positioning, reducing ease of operation
Solution Approach 1:
The guide wall is pre-formed with an inclined surface that automatically guides the projection into the engagement groove during attachment. This preliminary geometric arrangement eliminates the need for precise manual positioning and reduces the rotational angle required, as the projection is progressively led into its final position by the inclined guide wall surface.
Solution Approach 2:
The guide wall acts as an intermediary element between the projection and the engagement groove. It provides a transitional path that facilitates the engagement process, allowing the projection to move from a preliminary position to the final engaged position through a guided motion, thereby simplifying the attachment operation while ensuring reliable retention.
2Ease of operation
If the ring is made removable for easy detachment, then ease of operation is improved, but the risk of the ring coming off the housing increases
Solution Approach 1:
The engagement mechanism is designed to be dynamically controllable. During normal use, the projection engages with the engagement groove to secure the ring. For detachment, the user applies a specific rotational force that overcomes the engagement, allowing the projection to disengage from the groove. This dynamic design enables easy detachment when needed while maintaining reliable retention during normal operation.
Solution Approach 2:
The engagement groove is strategically positioned and dimensioned to allow the projection to be easily extracted when detachment is required. The groove's geometry provides a clear escape path for the projection, enabling simple removal of the ring from the housing without complex disassembly procedures, thus balancing retention reliability with detachment ease.
3Reliability
If precise circumferential positioning is required for attachment, then the retention reliability is improved, but the attachment procedure becomes more complex and time-consuming
Solution Approach 1:
The guide wall's inclined surface is pre-configured to automatically align the projection with the engagement groove during the attachment process. This preliminary geometric arrangement eliminates the need for manual circumferential positioning adjustments, as the projection is progressively guided into the correct position by the inclined guide wall, significantly reducing attachment time while ensuring precise engagement.
Solution Approach 2:
The guide wall provides self-aligning functionality, where the projection automatically finds its correct position in the engagement groove through the guidance of the inclined surface. This self-service mechanism eliminates the need for user intervention in the positioning process, allowing the components to self-align and engage correctly without requiring precise manual circumferential positioning.
Data Source
AI summary
A ventilation apparatus includes a motor, a fan, a housing, and a ring. A projection protrudes from one of an outer peripheral surface of a peripheral wall part of the housing and an inner peripheral surface of the ring, whereas an engagement wall and a guide wall are provided on the other of the outer peripheral surface of the peripheral wall part of the housing and the inner peripheral surface of the ring. The guide wall has a guide surface configured to guide the ring rearward relative to the housing and to guide the projection to an engagement position at which the projection is abuttable on an engagement surface of the engagement wall. In a direction in which the projection moves away from the guide surface in a front-rear direction, an open space extends from the guide surface to an area that corresponds to an end of the second surface.