Steering Knuckle Expansion Tool with Rotating Connector
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Solution Overview
Problem
Conventional expansion tools for steering knuckles are complex and costly, often causing damage to the knuckles due to tilted expanding segments during removal.
Innovation Solution
An expansion tool structure featuring a rotatable connector with a non-circular joining portion guiding an actuation projection to rotate and expand the removal zone of the steering knuckle, avoiding abrasion and facilitating easy assembly and quick removal of the knob mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional expansion tools with tilted expanding segments are used, then the steering knuckle can be expanded for removal, but the knuckle is damaged due to abrasion from tilted segments
Solution Approach 1:
The actuation projection features non-circular short faces that engage with the retainer in an asymmetric manner, creating a rotational expansion motion rather than linear tilted expansion. This asymmetric geometry ensures the expansion force is applied perpendicular to the knuckle surface, preventing abrasion while enabling effective removal
Solution Approach 2:
Instead of using tilted segments that push outward at an angle, the invention inverts the approach by using a rotatable connector with non-circular joining portions that guide the actuation projection to rotate. This rotation causes the short faces to force the inner walls of the removal zone outward perpendicularly, eliminating the harmful tilted expansion effect
2Stability of the object's composition
If conventional removal tools with multiple guide columns and slidable blocks are used, then the steering knuckles can be supported stably, but the tool structure becomes complicated and fabrication cost increases
Solution Approach 1:
The invention merges the support and expansion functions into a single integrated body structure. The body includes integrated features such as the receiving orifice, rotation portions, retainers, and positioning mechanisms all combined into one piece, eliminating the need for separate guide columns, slidable blocks, and defining posts while maintaining stability
Solution Approach 2:
The body structure serves multiple functions simultaneously: it provides support stability through the receiving orifice and rotation portions, enables expansion through the actuation projection and retainer, and ensures proper positioning through the multiple-section positioning set. This multi-functionality reduces the overall number of components needed
Data Source
AI summary
An expansion tool structure for a steering knuckle of a vehicle contains: a body, a multiple-section positioning set, and a rotatable connector. The body includes a receiving orifice, a first rotation portion, a recess, a second rotation portion, a stopped face, two retainers, a holding protrusion, a notch, a hollow accommodation section, and a threaded orifice. The multiple-section positioning set includes a locating ball, a resilient element, and a threaded post. The rotatable connector includes a holder, four slots, a first rotatable coupling section, a second rotatable coupling section, a stepped edge, an extension, a C-shaped ring, and a non-circular joining portion. The rotatable connector further includes an actuation projection, and the actuation projection has two opposite elongated faces and two opposite short faces. Preferably, a width of a respective one short face is equal to or is less than a width of a respective one retainer.