Pivoting System Design for Reliable Switchgear Operation
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Summary
Problems
Existing pivoting systems for equipment supports in wall-mounted devices, such as power sockets and USB sockets, face issues with loosening of the adjustment screw over time, leading to a loss of power and noise during opening and closing cycles, due to the deterioration of torsional stress in the torsion spring.
Innovation solutions
A pivoting system that includes a rotational drive shaft, a shock absorber, a torsion spring under stress, and an adjustment mechanism with a toothed wheel and screw, where the screw's threading cooperates with the toothed wheel's notching to adjust the torsional stress, and a locking element to prevent screw loosening, ensuring stable operation over 30,000 cycles.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the adjustment screw is used to maintain torsional stress of the torsion spring, then the initial power and performance of the pivoting system is improved, but the screw loosens over time during opening/closing cycles, causing loss of power and noise
Why choose this principle:
A locking element is introduced as an intermediary component between the adjustment screw and the toothed wheel. This locking element engages with the notching of the toothed wheel to prevent relative movement, thereby preventing the adjustment screw from loosening while maintaining the ability to adjust torsional stress when needed.
Principle concept:
If the adjustment screw is used to maintain torsional stress of the torsion spring, then the initial power and performance of the pivoting system is improved, but the screw loosens over time during opening/closing cycles, causing loss of power and noise
Why choose this principle:
The locking element is designed to automatically engage with the toothed wheel notching after the adjustment screw is tightened. This preliminary locking action prevents the screw from loosening during subsequent opening/closing cycles, ensuring long-term stability without requiring additional adjustment.
Application Domain
Data Source
AI summary:
A pivoting system that includes a rotational drive shaft, a shock absorber, a torsion spring under stress, and an adjustment mechanism with a toothed wheel and screw, where the screw's threading cooperates with the toothed wheel's notching to adjust the torsional stress, and a locking element to prevent screw loosening, ensuring stable operation over 30,000 cycles.
Abstract
The invention relates to a pivoting system (100) for a device support, comprising a rotating drive shaft, a damper (140), a tensioned torsion spring (180) connected to the rotating drive shaft, and a device for adjusting the initial torsional tension of the torsion spring. This adjustment device includes a toothed wheel (150) connected to the torsion spring and an adjusting screw (170) whose threaded body engages with the teeth of the toothed wheel, such that tightening or loosening the adjusting screw causes the toothed wheel to rotate about its axis. According to the invention, a locking element (V2), separate from the adjusting screw, is provided. This locking element cooperates directly or indirectly with the toothed wheel to prevent its rotation about its axis.