Ring Nut With Rotatable Sleeve And Locking Member
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Solution Overview
Problem
Non-rotatable ring nuts pose safety risks due to misalignment and require additional tools for assembly and disassembly, while rotatable ones cannot be handled without tools, leading to inefficiencies and safety hazards.
Innovation Solution
A ring nut design featuring a sleeve with a non-rotationally symmetrical head profile and adjustable locking members that allow for tool-free rotation and locking, ensuring the sleeve is securely attached to a disc without protruding, enabling safe and efficient handling without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a non-rotatable ring nut is used, then alignment in load direction cannot be achieved and safety risk increases, but if a rotatable ring nut is used, then additional tools are required for assembly and disassembly
Solution Approach 1:
The ring nut transitions from a static non-rotatable design to a dynamic rotatable design with controllable locking. The sleeve can rotate freely when not locked, enabling alignment adjustments, and can be locked in position when proper alignment is achieved, eliminating the need for additional tools while maintaining safety.
Solution Approach 2:
The rotational state parameter of the sleeve is changed from fixed (non-rotatable) to variable (rotatable with locking). By introducing a locking mechanism that can engage or disengage, the system allows the sleeve to switch between rotatable and fixed states, resolving the contradiction between safety and ease of operation.
2Ease of operation
If a sleeve protrudes from the underside of the base part, then rotational adjustment is enabled, but load distribution is reduced and structural integrity is compromised
Solution Approach 1:
The sleeve is nested within the base part structure, with its lower end receiving on the bearing surface surrounding the penetration opening. This nesting arrangement allows the sleeve to rotate within the confined space without protruding from the underside, maintaining both rotational adjustability and structural integrity for proper load distribution.
Solution Approach 2:
The rotational adjustment function is achieved through rotation in the horizontal plane rather than through vertical protrusion. The sleeve rotates about its longitudinal axis while remaining contained within the base part, transferring the adjustment mechanism from a vertical dimension to a horizontal dimension.
Data Source
AI summary
A ring nut. A suspension ring includes a base having a sleeve with a threaded bore that is rotatably mounted in a penetration opening. The sleeve is supported by a circumferential annular collar at a bearing surface, surrounding the penetration opening, that is on an exterior at the end of the sleeve facing away from the underside of the base with a non-rotationally symmetrical head profile. The sleeve protrudes at the lower end into a central opening of a disc resting against the underside of the base and is connected thereto in a rotationally fixed manner but does not project at the underside from the disc. A locking member on the base can be brought into a locking position, cooperating with the head profile for locking in the rotational direction, and into a neutral position where the head profile is released in the direction of rotation.