Tire Sensor Housing Inner Wall Structure for Secure Retention
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Solution Overview
Problem
Existing housing bodies for functional components in tires face issues with inadequate holding force, leading to component detachment or excessive movement, and durability degradation due to improper friction forces during impact or deformation.
Innovation Solution
A housing body with a side wall portion featuring an uneven inner surface composed of protruding and recessed portions, optimized to adjust friction force and prevent excessive deformation, ensuring secure attachment and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing body is made smooth to facilitate housing work, then the ease of operation is improved, but the holding force of the functional component deteriorates
Solution Approach 1:
The inner wall surface of the housing body is designed with localized uneven regions (protrusions and recesses) at specific positions, while other areas remain smooth. This local modification provides enhanced holding force through increased friction at contact points without compromising the overall ease of housing work, as the uneven regions are strategically placed to engage with the functional component after insertion.
2Reliability
If the friction force is increased to improve holding force, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
Instead of making the entire inner wall surface rough to increase friction, the patent applies uneven regions only at specific localized areas where contact with the functional component occurs. This selective approach increases holding force through targeted friction enhancement while maintaining smooth surfaces in other areas to facilitate easy insertion and housing work.
3Strength
If the housing body is made rigid to prevent deformation, then the strength is improved, but the durability deteriorates due to excessive load
Solution Approach 1:
The housing body material and structure are designed to exhibit controlled elastic deformation characteristics. Rather than being completely rigid, the housing body can deform elastically within a certain range to absorb impact energy, then recover its original shape. This parameter optimization prevents excessive load transmission while maintaining sufficient structural strength, thereby improving durability under impact conditions.
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 solution provides enhanced holding force, prevents component detachment, facilitates easy installation, and maintains housing body durability by adjusting friction and deformation, thereby improving overall performance.
Implementation Method 1
a contact area between the surface of the functional component and the inner wall surface of the side wall portion of the housing body is reduced as compared with the case where the uneven region is not provided, thus the friction force on the contact surface between the surface of the functional component and the side wall portion of the housing body is reduced
Implementation Method 2
the housing body is elastically deformed and presses a wall surface of a housing of the functional component to generate friction force, and the functional component is held in the housing body
Data Source
AI summary
Provided is a housing body with a functional component and a tire. A functional component is configured to acquire tire information and a housing body is provided to house the functional component. The housing body includes a bottom portion fixed to a tire inner surface, a side wall portion protruding from the bottom portion, a housing portion formed by the bottom portion and the side wall portion, and an opening portion communicating with the housing portion. At least part of an inner wall surface of the side wall portion has an uneven region composed of a plurality of protruding portions and/or recessed portions.