Adjustable Wheel Nut Rotation Indicator with Removable Strips
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Solution Overview
Problem
Existing rotation indicators for wheel nuts face issues with varying wheel trim heights, where the pointer may be either too proud or insufficiently long to reach the nut, leading to improper positioning and security.
Innovation Solution
A rotation indicator with a body that has removable top section strips, allowing adjustment in height by removing strips to match the wheel trim, and a cap with catch means such as barbs or an inturned lip for secure attachment, ensuring the pointer is positioned correctly above the trim without being excessively proud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the body is made with a fixed height to reach wheel nuts, then it can securely fit over the nut, but it cannot adapt to varying wheel trim heights causing the pointer to be either too proud or insufficiently long
Solution Approach 1:
The body is divided into a permanent base portion and removable top section strips. The base portion has a fixed height that ensures secure fitting over the wheel nut, while the removable top section strips can be selectively removed to adjust the overall height of the body, allowing the pointer to be positioned at the correct height above various wheel trim levels.
2Adaptability or versatility
If the pointer is made longer to reach lower trims, then it can contact lower trims, but it becomes excessively proud on higher trims
Solution Approach 1:
The removable top section strips provide a segmented height adjustment mechanism. By removing different numbers of strips, the pointer height can be precisely controlled to match specific wheel trim levels, eliminating the need for a single oversized pointer that would be excessively proud on higher trims.
3Adaptability or versatility
If the body height is increased to reach all wheel trims, then it can potentially reach all positions, but it cannot securely fit over wheel nuts with proper pointer positioning
Solution Approach 1:
The body structure separates the secure fitting function (base portion with fixed height) from the height adjustment function (removable top section strips). This ensures reliable engagement with the wheel nut while allowing flexible adjustment of the pointer height above the trim.
Solution Approach 2:
The removable top section strips are pre-configured on the body at the factory. The user simply needs to remove the appropriate number of strips to match the wheel trim height, rather than assembling multiple components or performing complex adjustments.
Data Source
AI summary
A rotation device for a wheel nut comprising a body having a bore formed with equi-spaced grooves enabling the device to be releasably but non-rotatably secured to the wheel nut in one position of a plurality of positions, and a cap which fits removably into or onto one end of the body to close off the bore. The cap comprises a means to indicate the rotational position of the device relative to a reference. So that the height of the body may be chosen to allow it to extend through a raised wheel trim, but not project too far above, the body is formed at its end to which the cap fits with at least one removable top section strip, which may be delimited by respective continuous notches around the periphery of the body at the interior and/or exterior thereof.