Switchgear Fastening Lug Spring Mounting Mechanism
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Solution Overview
Problem
Existing switching devices with movable locking slides are complex and costly, requiring assembly during production and not allowing for subsequent changes or retrofits, leading to unnecessary components and increased manufacturing costs.
Innovation Solution
A switching device with a simple structure featuring a fastening device that includes a fixed first fastening lug and a second fastening lug with a prestressed spring, allowing for subsequent assembly and retrofitting of the spring into a fully assembled device, reducing production costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If movable locking slides are used in switching devices, then the switching device can be securely mounted on DIN rails, but the device complexity and manufacturing cost increase significantly
Solution Approach 1:
The locking mechanism is divided into two separate parts: a fixed fastening lug and a separate spring component. This segmentation eliminates the need for complex movable locking slides while maintaining mounting security, as the spring can be independently attached to the fixed lug to provide the necessary locking force.
Solution Approach 2:
The spring is extracted as a separate, removable component from the housing assembly. This allows the spring to be attached or removed independently without disassembling the entire switching device, simplifying manufacturing and enabling subsequent modifications while maintaining reliable mounting.
2Ease of manufacture
If movable locking slides are integrated into the housing, then the switching device can be assembled during manufacturing, but subsequent installation or removal is not possible without impairing functionality
Solution Approach 1:
The spring is designed as a dynamic, removable component rather than a fixed integral part of the housing. This allows the spring to be attached or removed at any stage, providing adaptability for subsequent modifications while maintaining the simplicity of initial manufacturing assembly.
Solution Approach 2:
The fixed fastening lug is prepared in advance during housing manufacturing, but the spring attachment is left as a subsequent action. This preliminary preparation enables both initial manufacturing assembly and future modifications without requiring complex integrated locking mechanisms.
3Reliability
If multiple movable locking slides are used in multi-phase switching devices, then all phases can be securely mounted, but the number of components and manufacturing cost increase unnecessarily
Solution Approach 1:
The fixed fastening lug design is universal and can be used for all phases of multi-phase switching devices. A single spring component can be attached to each fixed lug, eliminating the need for multiple complex movable locking slides while maintaining secure mounting for all phases, thereby reducing the total number of components.
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 enables a cost-effective and easily producible switching device with a simple structure, allowing for subsequent assembly of the spring, reducing unnecessary components and enabling easy retrofitting, thus addressing the complexity and cost issues of existing devices.
Implementation Method 1
a spring (7) is arranged in the area of the second fastening lug (6) and is pre-tensioned in the direction of the first fastening lug (5)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to switchgear (1). On a housing (2) of said switchgear (1) a fastening device (3) for mounting the switchgear (1) on a supporting rail (4) is arranged, the fastening device (3) comprising a stationary first fastening lug (5) and a second fastening lug (6) arranged opposite the first fastening lug (5). According to the invention, the second fastening lug (6) is stationary, a spring (7) is arranged in the region of the second fastening lug (6) and is biased in the direction of the first fastening lug (5), and the spring (7) projects partly into a groove (8) which is delimited by the second fastening lug (6) .