Vehicle Door Stopper Assembly with Tactile Feedback
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Solution Overview
Problem
Existing adjustable stopper assemblies for vehicles lack precision and user feedback in adjusting for manufacturing and assembly tolerances between structural parts, leading to potential misalignment and damage.
Innovation Solution
An adjustable stopper assembly with a pin part featuring resiliently deformable projections that provide tactile and audible feedback during rotation, ensuring precise adjustment and preventing inadvertent disengagement, comprising a base part, intermediate part, and pin part with screw-threaded connections and recesses for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional adjustable stopper assemblies are used, then the basic function of maintaining spaced relationship between structural parts is achieved, but the adjustment precision and user feedback are insufficient
Solution Approach 1:
The patent incorporates resiliently deformable projections that provide tactile feedback and audible clicks during rotation, allowing users to sense precise angular positions and adjustment steps without visual aids or complex displays
Solution Approach 2:
The adjustment mechanism is divided into discrete angular positions through the interaction between the pin part's projections and the base part's recesses with inwardly-extending projections, creating stepwise adjustment rather than continuous movement
2Manufacturing precision
If the pin part is made adjustable to compensate for manufacturing and assembly tolerances, then alignment accuracy improves, but the risk of inadvertent disengagement increases
Solution Approach 1:
The resiliently deformable projections act as intermediaries between the pin part and the base part, providing a mechanical interlock that prevents inadvertent disengagement while allowing controlled adjustment through the screw-threaded connection
Solution Approach 2:
The resiliently deformable projections can dynamically deform during assembly to allow passage through the intermediate part's aperture, then spring back to their original shape to provide locking engagement, adapting to different assembly conditions
3Reliability
If resiliently deformable projections are added to prevent inadvertent disengagement and provide feedback, then reliability and precision improve, but device complexity increases
Solution Approach 1:
The resiliently deformable projections serve multiple functions simultaneously: they prevent inadvertent disengagement, provide tactile feedback, enable stepwise adjustment, and facilitate assembly by deforming to pass through the aperture, eliminating the need for separate components for each function
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 assembly allows for precise, stepwise adjustment of the pin part's longitudinal position, providing accurate alignment and user feedback, thereby improving the accuracy and reliability of the adjustment process.
Implementation Method 1
the at least one first, resiliently deformable outwardly-extending projection of the shank is received in the recess of the base part, the recess having one or more inwardly-extending projections which are engageable with the at least one first resiliently deformable projection as the pin part is rotated
Implementation Method 2
the shank of the pin part comprises a screw-threaded portion between the at least one first, resiliently deformable projection and the head portion of the pin part; the intermediate part comprises a screw-threaded through aperture which is screw-threadedly engaged with the screw-thread portion of the pin shank
Data Source
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AI summary
An adjustable stopper assembly for a vehicle door or hood, comprises: a base part comprising a body and attachment means for securing in an aperture in the body of the vehicle; a pin part comprising a head portion and a shank extending from the head portion; and an intermediate part located between the base part and the head portion of the pin part and being releasably securable to the base part: wherein: the shank of the pin part comprises at least one first, resiliently deformable outwardly-extending projection at a first longitudinal position of the shank, at least one second, resiliently deformable outwardly-extending projection at a second longitudinal position of the shank spaced from the first projection in the longitudinal direction of the shank and a screw-threaded portion between the at least one first, resiliently deformable projection and the head portion of the pin; the intermediate part comprises a screw-threaded through aperture which is screw-threadedly engaged with the screw-thread portion of the pin shank; and the base part comprises a recess in which the at least one second, resiliently deformable projection of the shank is received, the recess having one or more inwardly-extended projections which are engageable with the at least one second resiliently deformable projection as the pin part is rotated.