Side-Mounted Auxiliary Contact Assembly 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 for a linkage member to connect the two mechanisms and a connector to fix the housings in place, optimizing space and assembly convenience.
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 relocates the auxiliary contact from the vertical dimension (top side) to the horizontal dimension (side wall), allowing the auxiliary contact mechanism to be installed on the side wall of the housing rather than stacked vertically above the main contact. This dimensional shift reduces the overall height of the switching appliance while maintaining the functional linkage between main and auxiliary contacts through the actuating member.
2Volume of stationary object
If the auxiliary contact mechanism is integrated into the housing structure, then the overall structure becomes more compact, but the assembly and disassembly process becomes more complex
Solution Approach 1:
The patent divides the auxiliary contact mechanism into a separable module that can be independently installed and removed from the housing. The auxiliary contact mechanism includes components such as the auxiliary contact, actuating member, and positioning structure, which can be assembled as a unit and then mounted to the housing through the side wall opening. This modular segmentation maintains compact overall dimensions while simplifying assembly and maintenance operations.
Data Source
Figure 1
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AI summary
A switching appliance comprises a first housing and a second housing installed on one side of the first housing and used to accommodate an auxiliary contact mechanism, wherein the first housing comprises a lower housing, and an upper housing used to accommodate a main contact mechanism; the auxiliary contact mechanism comprises 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 is formed in the side surface, facing the lower housing, of the mounting leg, and a second clamping groove which is opposite to the first clamping groove is 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; and the connector is simultaneously inserted into the first clamping groove and the second clamping groove in a direction perpendicular to the linkage member to fix the second housing and the first housing. According to the switching appliance, the assembling directions of the linkage member and the connector are set to perpendicular to each other, without any interference during assembly. Therefore, the switching appliance has the characteristics of convenience in assembly and simple structure.