Filter Holder Pressing Disk Axial Locking Mechanism
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Solution Overview
Problem
Existing filter holder designs for sterilization containers are complex and prone to accidental release, with unfavorable handling and alignment requirements, particularly due to bayonet connections and radially extending grip parts.
Innovation Solution
A filter holder system featuring a mounting pin with a detachable positive-locking connection using a circular locking groove and radially adjustable holding balls, an adjusting sleeve with a through hole for axial adjustment, and a fixing pin for secure locking, allowing for simple and secure attachment and detachment of the pressing disk without separate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bayonet connections and radially extending grip parts are used for attaching the pressing disk, then the pressing disk can be securely fixed, but the handling becomes unfavorable and alignment requirements increase
Solution Approach 1:
The fixing mechanism is divided into separate functional elements: a grip part with gripping elements for easy manual handling, and a separate alignment feature using the pressing disk's own structure. This segmentation allows independent optimization of gripping ease and alignment precision without mutual interference.
Solution Approach 2:
The pressing disk serves dual functions: it is both the object to be gripped and the alignment reference. The gripping elements are designed to automatically align with the pressing disk's geometry during insertion, eliminating the need for separate alignment procedures or additional alignment features.
2Reliability
If multiple separate locking elements are used to secure the pressing disk, then the fixation becomes more reliable, but the device complexity increases
Solution Approach 1:
Multiple gripping elements are integrated into a single unified grip part structure that attaches to the pressing disk as one component. This merging reduces the number of separate parts while maintaining the distributed securing action of multiple contact points, simplifying both assembly and manufacturing.
3Reliability
If a complex locking mechanism with multiple components is used, then the pressing disk can be securely held, but the handling and assembly become more difficult
Solution Approach 1:
The gripping elements are pre-configured in the grip part with orientations and positions that automatically correspond to the pressing disk's geometry upon insertion. This preliminary arrangement ensures that no additional alignment actions or adjustments are needed during assembly, reducing manufacturing complexity while maintaining secure holding.
Data Source
AI summary
A filter holder, for a sterilization container (1), has a wall area (5) with ventilation openings (7), through which an exchange of air takes place between the interior space of the sterilization container and the surrounding area, covered by a filter sheet (10) to form a sterile barrier, sterilizing air entering the interior space. The filter sheet is held on the wall area (5, 6) by an air-permeable pressing disk. A holding pin (20), with a mounting hole (34), by which the pressing disk (12) can be pressed against the wall area in the axial direction (41), can be attached to a mounting pin (11), which is stationary relative to the wall area. The holding pin (20) is connected with the mounting pin in a pressed position via a detachable positive-locking connection (19, 51). The connection can be secured by an adjusting sleeve (21) mounted displaceably on the holding pin.