Sealing Mechanism for Push-Button Device
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Solution Overview
Problem
Conventional sealing pads in double-push-button devices have through-holes that prevent the formation of a sealing space, allowing foreign matter like water or dust to enter and damage the device.
Innovation Solution
A sealing mechanism with a sealing body and abutment parts that compresses between the front ring shell and lamp base shell, forming a complete sealing space without holes, using rib parts and elastic connecting elements to enhance sealing and mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through-hole is formed in the sealing pad to allow push-button operation, then the push-button device can be operated, but the sealing space cannot be formed and foreign matter can enter
Solution Approach 1:
The sealing pad is segmented into a sealing body and separate abutment parts. The abutment parts are positioned to contact the push-button cover and push-pin, while the sealing body maintains continuous contact with the lamp base shell and front ring shell to form an uninterrupted sealing surface, eliminating the need for through-holes in the sealing path.
Solution Approach 2:
The abutment parts act as intermediaries that transmit the pressing force from the push-button cover to the push-pin without requiring the sealing body itself to have through-holes. This mediator structure allows operational force transmission while preserving the integrity of the sealing surface.
2Reliability
If a sealing pad without through-holes is used to form a sealing space, then foreign matter is blocked, but the push-button mechanism cannot be actuated
Solution Approach 1:
The sealing pad is divided into functional segments: the sealing body for maintaining the sealing surface and abutment parts for force transmission. This segmentation allows the sealing body to remain intact without through-holes while the abutment parts provide the necessary mechanical interface for push-button operation.
Solution Approach 2:
The abutment parts serve as intermediary elements that bridge the gap between the push-button cover and the internal push-pin mechanism. They transmit actuation forces without compromising the sealing integrity of the main sealing body.
3Strength
If the sealing body thickness is increased to improve sealing, then mechanical strength is enhanced, but the device complexity increases
Solution Approach 1:
Rather than uniformly increasing the thickness of the entire sealing body, the invention segments the structure into a sealing body and thinner abutment parts. This allows localized thickness optimization where strength is needed while maintaining overall structural simplicity and reducing material usage.
Solution Approach 2:
The sealing body has varying thickness distribution: thicker regions where sealing pressure and mechanical strength are required, and thinner regions where only minimal structural support is needed. This local quality optimization enhances strength where necessary without unnecessarily increasing overall complexity or material consumption.
Data Source
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AI summary
A sealing mechanism which is suitable for a key device. The key device contains a key base (32), and the sealing mechanism (34) contains one front ring shell (44), one lamp base shell (46) and one sealing member (48). The front ring shell (44) is installed on the key base (32), and the lamp base shell (46) is installed on the front ring shell (44). The sealing member (48) contains a sealing body (50) and a sealing wall (52), wherein the sealing wall (52) is circularly arranged around the sealing body (50) so as to be fixed on the lamp base shell (46). When the lamp base shell (46) is installed on the front ring shell (44), the lamp base shell and the front ring shell (44) respectively push the periphery of the sealing body (50), so that the sealing body (50) and the front ring shell (44) jointly form one sealing space so as to seal one first open groove (321) on the key base (32). A key device which has the sealing mechanism. The sealing mechanism can effectively block foreign matter from entering the interior of the key device.