Pressure Airbag Sensor Holder With Anti-Separation Sealing
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Solution Overview
Problem
Existing pressure-type airbag sensors face complications in installation due to complex assembly structures requiring rotational direction fixing and loosening prevention, which can lead to separation and vibration issues.
Innovation Solution
A fixing device with a holder and cover design that includes protrusion parts, locking parts, and a prevention plate to ensure secure fastening and sealing, preventing separation and external interference during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rotational direction fixing part and loosening prevention part are added to prevent separation, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the rotational direction fixing function and loosening prevention function into a single integrated holder structure. The holder includes protrusion parts that engage with recesses in the cover to simultaneously prevent rotational misalignment and separation, eliminating the need for separate fixing parts and simplifying the overall assembly structure while maintaining reliability.
2Ease of operation
If connector housing is exposed during installation, then ease of operation is improved, but reliability deteriorates due to external interference
Solution Approach 1:
The prevention plate is pre-positioned on the holder to cover the connector housing during the installation process. This preliminary protective action prevents external interference and accidental fastening before the cover is fully attached. Once installation is complete, the cover encloses the prevention plate, maintaining protection while allowing easy access during the installation phase.
3Manufacturing precision
If seal is in rigid contact with cover, then manufacturing precision is improved, but reliability worsens due to vibration and separation risk
Solution Approach 1:
The seal's contact characteristics are changed from rigid to elastic through material selection and design. The elastic seal can deform to accommodate minor dimensional variations while maintaining sealing effectiveness, and simultaneously provides vibration resistance by conforming to the cover surface under dynamic conditions, thus improving reliability without sacrificing sealing precision.
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
Facilitates smooth sealing and secure fastening of the pressure-type airbag sensor, enhancing installation convenience and durability by reducing the risk of separation and external damage.
Implementation Method 1
the seal (130) is in elastic contact with the cover (400), and thus smooth sealing can be achieved
Data Source
AI summary
The present invention provides a fixing device for installing a pressure-type air bag sensor, the fixing device comprising: a disc-shaped holder; a cover coupled to the holder and having a sensor part disposed on the top thereof; and a connector housing disposed on the bottom of the cover, wherein the holder has a holder body formed in a disc shape, an outer wall having a predetermined height is formed along the outer circumference of the holder body, a ring-shaped seal is formed through insert-injection molding to have a predetermined radius inside the holder body, and protrusion parts having a predetermined curvature are formed at the upper surface part and the lower surface part of the holder body.