Sealed Housing with Cam-Driven Snap-Fit Access and Ingress Protection
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Solution Overview
Problem
Existing housings for electronic devices lack efficient mechanisms for sealing and unsealing while maintaining ingress protection, which is crucial for preventing the entry of liquids and dust.
Innovation Solution
A housing apparatus with a cover and rotating elements that utilize snap-fit connectors, seals, and rotating elements with cams to convert rotational motion into linear motion, allowing for easy sealing and unsealing while maintaining an ingress protection rated enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed housing is used to maintain ingress protection, then protection against liquids and dust is improved, but access to internal objects becomes difficult
Solution Approach 1:
The housing is divided into separate components (housing body and cover) that can be independently removed and reattached. This segmentation allows the cover to be detached for access to internal objects while maintaining the sealed integrity of the housing when closed.
Solution Approach 2:
The housing transitions from a static sealed structure to a dynamic system where the cover can be moved between closed (sealed) and open (accessible) positions. This dynamic capability resolves the contradiction by allowing the housing to adapt its state based on operational needs.
2Reliability
If a complex sealing mechanism is used to maintain ingress protection, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The snap-fit connectors automatically engage and disengage without requiring additional tools or complex mechanisms. The sealing system serves itself by using the inherent elasticity and geometric design of the connectors to maintain sealing integrity, eliminating the need for complex fastening systems.
Solution Approach 2:
The sealing function is extracted from complex mechanical fastening systems and integrated into the basic geometry of the snap-fit connectors themselves. This extraction simplifies the overall mechanism while maintaining sealing reliability through the elastic properties of the connector materials.
3Strength
If traditional fastening mechanisms are used for the cover, then secure attachment is achieved, but ease of opening and closing deteriorates
Solution Approach 1:
The snap-fit connectors are designed to automatically engage and lock into place without requiring tools, providing secure attachment through self-service operation. The elastic deformation of the connectors during engagement ensures firm connection while allowing easy manual release.
Solution Approach 2:
The mechanical properties of the snap-fit connectors utilize elastic deformation parameters to achieve both secure attachment and easy operation. By controlling the elasticity and geometric parameters of the connectors, the system provides strong holding force when closed while requiring minimal force to open.
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 apparatus provides a seamless transition between closed and open configurations, ensuring effective sealing and unsealing while maintaining a high level of protection against environmental elements, such as dust and liquids, without the need for additional tools.
Implementation Method 1
a rotating element with a cam to convert rotational motion into linear motion, allowing for easy sealing and unsealing
Implementation Method 2
Housings may be used to protect objects inside the housing from elements that are outside the housing (e.g., liquids, dust, etc.)
Implementation Method 3
the sealing surface and the cover guides are configured to compress the seal and the seal retention structure
Implementation Method 4
at least one snap-fit connector; wherein the at least one snap-fit connector may include a first arm and a second arm
Data Source
AI summary
Disclosed is a housing and a cover, e.g., for a power device. The housing and cover may be coupled to each other to form an enclosure. The housing and cover may be coupled using snap-fit connectors, and form an ingress protection rated enclosure. The housing and cover may comprise a seal, a seal retainer, a retainer guide, and one or more snap-fit connectors. For each snap-fit connector, a rotating element may be incorporated into the housing and/or cover. Each rotating element may comprise a mechanical element for releasing the snap-fit connection, and/or a cam for converting a rotating motion of the rotating element to a linear motion that applies force to the cover from inside the enclosure. By rotating the rotating elements, the cover may be released from the housing and removed. Rotating the rotating elements may unseal a sealed connection, de-couple the housing and cover, and open the enclosure.