Electromagnetic Contactor Snap-Fit Frame for Tool-Free Release
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Solution Overview
Problem
The snap-fit mechanism in existing electromagnetic contactors requires significant time and effort to release, risks damaging the flexible protruding plate portion due to the lack of a stopper, and necessitates the use of tools for multiple connections, complicating workability.
Innovation Solution
An electric device with a snap-fit mechanism that allows relative displacement between the first and second frames in an orthogonal direction, eliminating the need for tools and incorporating a relative displacement suppression mechanism to facilitate component replacement and improve workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the snap-fit mechanism is configured to release fitting by bending the flexible protruding plate portion outward using a tool, then the fitting can be released, but it takes time and effort to bend the plate portion with the tool
Solution Approach 1:
The release mechanism allows the flexible protruding plate portion to be released automatically by the relative displacement of the first and second frames without requiring manual bending with a tool. The plate portion elastically deforms and releases from the fitting projection portion through the displacement mechanism, making the system self-releasing.
Solution Approach 2:
The invention introduces a displacement mechanism as an intermediary that converts the relative displacement of frames into the release action of the snap-fit connection. This intermediary mechanism automates the release process that would otherwise require direct manual manipulation.
2Device complexity
If no stopper is provided to regulate the amount of bending of the flexible protruding plate portion, then the structure remains simple, but there is a concern that the plate portion may be broken depending on the amount of force applied
Solution Approach 1:
The invention provides a stopper that regulates the amount of bending of the flexible protruding plate portion before excessive force can be applied. This stopper acts as a protective measure in advance, preventing the plate portion from being bent beyond its elastic limit and avoiding breakage.
3Stability of the object's composition
If multiple snap-fit mechanisms are provided at different locations, then the connection is more secure, but it is necessary to simultaneously release the plurality of snap-fit mechanisms with a tool, which is problematic in terms of workability
Solution Approach 1:
The invention merges the release function of multiple snap-fit mechanisms into a single unified action. By providing a common displacement mechanism that simultaneously displaces all frames, all snap-fit connections are released at the same time through one operation, eliminating the need to manually release each mechanism separately.
4Strength
If the snap-fit mechanism requires use of a tool for release, then the connection strength is maintained, but the workability and ease of replacement is reduced
Solution Approach 1:
The displacement mechanism enables the snap-fit connections to be released automatically through the relative displacement of frames without requiring external tools. This self-releasing capability maintains connection strength during operation while greatly simplifying the replacement process.
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
Facilitates easy and simultaneous release of multiple snap-fit connections without damaging components, enhancing workability and reducing the risk of damage during replacement processes.
Implementation Method 1
a flexible protruding plate portion protruding from an open end side
Data Source
Figure 1
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AI summary
Provided is an electric device that can facilitate replacement of components in a main body frame. An electromagnetic contactor (1) includes a main body frame (30) housing a contact unit (10) and an electromagnet unit (20) in a housing section (30a). The main body frame includes a first frame (31) including a flexible plate portion (51), a second frame (41) facing the first frame in a first direction to form the housing section, and a snap-fit mechanism (50) connecting the first frame to the second frame. The snap-fit mechanism includes a fitted portion provided on the flexible protruding plate portion (51) and a fitting projection portion (55) provided on a side wall of the second frame and fitting with the fitted portion. The fitting projection portion and the fitted portion are fitted by bringing the first and second frames into relative proximity in the first direction, and the fitting is released by relatively displacing the first and second frames in a second direction orthogonal to the first direction.