Filter Housing Bracket Self-Locking Mechanism
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Solution Overview
Problem
Existing filters require additional components for securing the filter cartridge, which complicates the locking mechanism and increases the risk of accidental release.
Innovation Solution
A pivotally secured bracket on the carrier housing that moves between a locking and release position, using a self-locking clamping mechanism between steps on the filter and carrier housings to securely lock the filter element without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional clamping components are provided on the filter housing to secure the filter cartridge, then the locking reliability is improved, but the device complexity increases
Solution Approach 1:
The bracket is designed to combine two functions: it serves as both a support for inserting and removing the filter cartridge, and as a clamping device for securing the filter cartridge in the filter housing. This merging of functions eliminates the need for separate clamping components, thereby maintaining locking reliability while reducing device complexity
Solution Approach 2:
The bracket is designed as a multi-functional component that performs multiple tasks: supporting the filter cartridge during insertion/removal, clamping the filter cartridge in the locked position, and providing a leverage arm for manual operation. This universal design allows a single component to replace what would traditionally require multiple separate parts
2Reliability
If a self-locking clamping mechanism is used to secure the bracket, then the reliability against accidental release is improved, but the ease of operation may worsen
Solution Approach 1:
The bracket utilizes the self-locking effect of the clamping section between the two steps to automatically maintain its locking position without requiring additional locking mechanisms or active control systems. The geometry of the clamping section and steps creates a natural self-locking condition that prevents accidental release while keeping the mechanism simple and easy to operate
3Device complexity
If the bracket is designed to perform both support and clamping functions, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The clamping section of the bracket and the corresponding steps on the filter housing and carrier housing are designed with specific local geometric features that create the self-locking effect. By concentrating the precision requirements in these localized clamping interfaces rather than throughout the entire bracket structure, the overall manufacturing precision requirements are managed while maintaining the multi-functional capability
Data Source
AI summary
A filter device has a filter housing having a receiving space and a carrier housing. A filter element is arranged in the carrier housing, wherein the carrier housing is inserted into the receiving space of the filter housing and locked in the receiving space. A bracket with a clamping section is arranged on the carrier housing and is secured pivotally on the carrier housing by a hinge so as be pivotable between a locking position and a release position. In the locking position, the damping section of the bracket is clamped between a step on the filter housing and a step on the carrier housing and is secured in a self-locking position.


