Capacitor Mounting Assembly with Elastic Seat and Insulating Film
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Solution Overview
Problem
Existing mounting arrangements for capacitors on mounting plates lack a secure and efficient means to fasten the capacitor securely while ensuring electrical and thermal insulation, and rotational invariance.
Innovation Solution
A fastening element that partially surrounds the capacitor, with an elastic flange and radial projections, presses onto an elastic seat supported by a circumferential bead of the capacitor housing, providing secure clamping and rotational invariance, and an insulating film decouples electrical potentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastening element completely surrounds the capacitor, then the attachment is more secure and rotationally invariant, but the material consumption and weight increase
Solution Approach 1:
The fastening element is designed as a C-shaped clamp that engages with the capacitor body at specific locations rather than completely surrounding it. This segmented approach provides sufficient mechanical retention and rotational invariance through strategic engagement points while minimizing material consumption and weight.
2Device complexity
If the fastening element presses directly on the capacitor housing, then the attachment is simpler, but the capacitor winding is exposed to mechanical stress
Solution Approach 1:
An elastic seat is introduced as an intermediary between the fastening element and the capacitor bead. The fastening element presses on the elastic seat, which in turn presses on the bead, distributing the mechanical stress and protecting the capacitor winding from direct pressure while maintaining secure attachment.
3Device complexity
If the capacitor is directly mounted on the mounting plate, then the structure is simpler, but electrical potentials are not decoupled and heat dissipation is less efficient
Solution Approach 1:
An insulating film is introduced as an intermediary layer between the capacitor and the mounting plate. This film provides electrical insulation to decouple potentials while maintaining thermal contact for heat dissipation, achieving both electrical safety and thermal management without complex additional structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures secure, tilt-resistant attachment of the capacitor, reduces material and weight, and provides effective electrical and thermal insulation, ensuring reliable operation and efficient heat dissipation.
Implementation Method 1
the fastening element pressing on an elastic seat which is supported by a bead of the capacitor
Implementation Method 2
An insulating film is preferably arranged between the capacitor and the mounting plate. This can be designed to be both thermally conductive and electrically insulating.
Data Source
Figure 1~2
AI summary
The arrangement has a fixing unit (3) such as casing, which partially surrounds a capacitor (2). The capacitor is braced with a mounting plate (7). The fixing unit has a flange for fixing with the mounting plate, and the flange rotates in the circulating direction. The fixing unit is pressed on an elastic hub (4), which is supported by a corrugation (8) of the capacitor, where the hub has an elastic ring.