Side-Mounted Auxiliary Contact Layout for Compact Switching Appliances
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Solution Overview
Problem
Existing switching appliances with auxiliary contacts installed on the top side are excessively high, making them difficult to install in switch cabinets with insufficient height.
Innovation Solution
A switching appliance design featuring a first housing with a main contact mechanism and a second housing with an auxiliary contact mechanism, where the second housing is installed on the side of the first housing, allowing the auxiliary contact mechanism to be positioned lower, thus reducing the overall height of the appliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the auxiliary contact is installed on the top side of the switching appliance, then the auxiliary contact can be in linkage with the main contact, but the switching appliance becomes excessively high, making it difficult to install in switch cabinets with insufficient height
Solution Approach 1:
The patent repositions the auxiliary contact mechanism from the vertical dimension (top side) to the horizontal dimension (side wall), allowing the linkage member to extend horizontally through the side wall rather than vertically through the top. This dimensional change maintains the functional linkage while significantly reducing the appliance height.
2Length of stationary object
If the auxiliary contact mechanism is repositioned to the side wall, then the height of the switching appliance is reduced, but the structural complexity increases due to additional components like mounting legs and connectors
Solution Approach 1:
The housing is segmented into a first housing for the main contact mechanism and a second housing for the auxiliary contact mechanism. The mounting leg with integrated connector further segments the mounting function, allowing each component to be optimized independently while assembling to form the complete appliance.
Solution Approach 2:
The mounting leg combines multiple functions: it provides structural support, creates mounting positions on the side wall, and integrates the connector for electrical connections. This merging of functions reduces the need for separate components, thereby simplifying the overall structure despite the repositioning.
3Reliability
If the mounting leg with connector is used to fix the second housing to the first housing, then the auxiliary contact mechanism is securely mounted, but the assembly process becomes more complex due to position-limiting cooperation requirements
Solution Approach 1:
The mounting leg is pre-formed with the connector and clamping grooves during manufacturing, so that the position-limiting features are already in place before assembly. This preliminary preparation ensures proper alignment and secure mounting during the assembly process, reducing the complexity of the assembly operation itself.
Solution Approach 2:
The connector acts as an intermediary element between the mounting leg and the first housing. It provides the position-limiting cooperation and secure fixation without requiring complex direct integration, simplifying the assembly process while ensuring reliable mounting.
Data Source
AI summary
A switching appliance that includes a first housing and a second housing on one side of the first housing to accommodate an auxiliary contact mechanism, the first housing having a lower housing, and an upper housing to accommodate a main contact mechanism; the auxiliary contact mechanism having a linkage member connected to the main contact mechanism; a mounting leg that extends to the side surface of the side wall of the lower housing is arranged at the bottom of the second housing; a first clamping groove in the side surface, facing the lower housing, of the mounting leg, and a second clamping groove opposite the first clamping groove formed in the side wall of the lower housing; the mounting leg is connected to the side wall of the lower housing through a connector, which fixes the second housing and the first housing.