Spring Mounting Cone With Anchoring Hole For Torsion Spring Legs
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Solution Overview
Problem
Existing spring receiving cones for torsion springs with outwardly bent torque transmission legs are complex to assemble and manufacture, requiring significant force and material, and are inefficient in design, especially for larger wire gauges and higher rigidity springs.
Innovation Solution
A spring receiving cone with a stop anchoring hole in a radially outward projection, allowing for simplified assembly and storage, featuring a through hole with an internal thread for a socket head screw to support the torque transmission leg, and axial elevations to prevent coil slippage, enabling easy adaptation for both inwardly and outwardly bent torque transmission legs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring receiving cone is designed with flanks on the peripheral surface to engage between spring coils, then the assembly requires significant force and complex procedure, but the spring end can be securely fixed
Solution Approach 1:
The patent applies preliminary action by pre-forming the torque transmission leg during spring manufacture with an outward bend, eliminating the need to force the leg into a recess during assembly. The leg is prepared in advance to naturally engage with the peripheral surface features during simple axial insertion, reducing assembly complexity and force requirements while maintaining secure fixation.
2Adaptability or versatility
If a securing element with a recess is used to support the torque transmission leg, then the design can accommodate outwardly bent legs, but the assembly becomes complex and difficult to manufacture
Solution Approach 1:
The patent applies universality by designing a simplified peripheral surface configuration that serves multiple functions: it supports both inwardly and outwardly bent torque transmission legs, provides axial engagement features, and eliminates the need for complex recesses. The same peripheral surface structure accommodates different leg configurations without requiring additional manufacturing steps or specialized features.
Solution Approach 2:
The patent extracts the complex securing element with recess from the design and replaces it with a simplified peripheral surface configuration. By removing the unnecessary recess feature and retaining only the essential engagement surfaces, the design achieves outwardly bent leg support with significantly reduced manufacturing complexity.
3Reliability
If multiple holding elements with fastening screws are used to fix the spring end, then the spring can be securely supported, but the device becomes complex and requires multiple parts for storage
Solution Approach 1:
The patent merges multiple separate holding elements and fastening screws into a single integrated spring receiving cone structure. The peripheral surface features, including flanks and the torque transmission leg support area, are combined into one monolithic component that provides all necessary support functions, eliminating the need for multiple separate parts and simplifying both the device structure and storage requirements.
4Ease of operation
If the peripheral surface is pressed axially into the spring end without flanks, then the assembly is simple, but additional holding elements are required to prevent coil slippage
Solution Approach 1:
The patent applies local quality by adding localized flank features at specific positions on the peripheral surface where they are most effective for coil engagement. Rather than making the entire peripheral surface complex, flanks are strategically placed in areas where they provide maximum resistance to coil slippage while maintaining overall assembly simplicity. The local addition of flanks provides the necessary mechanical interlocking without compromising the simple axial press-in assembly process.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a spring mounting cone (1) for a spring end (25) of a spiral torsion spring (24), having a bent torque-transmitting leg (26) and comprising a circumferential surface (8) for radially supporting the torsion spring at the internal circumference of the torsion spring, at least one flank (9, 10) protruding from the circumferential surface (8) and extended in the circumferential direction for engaging between spring windings (27) of the torsion spring (24), an opening (11) in the circumferential surface (8), bounded by a torque-transmitting edge (12), for accommodating and supporting a torque-transmitting leg (26) of the torsion spring (24) bent inward, and a projection (16) that points radially outward and that is axially adjacent to the circumferential surface (8). The projection (16) has a hole (15) at a radial distance from the adjacent circumferential surface (8), which hole is designed to anchor a stop (19) in the circumferential direction for a torque-transmitting leg (26) of the torsion spring (24) bent outward.