Press Switch Rib Contact and T-Shaped Fixing
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Solution Overview
Problem
Conventional press switches experience stability and service life issues due to loose connections and increased friction over time, leading to reduced performance.
Innovation Solution
A press switch design featuring T-shaped fixing portions for secure engagement between the housing and base, along with line-to-surface contact between ribs and flat surfaces to minimize friction, and a conductive element with resilient members for reliable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the housing is connected to the base via engaging blocks and elongated fixing portions, then the assembly is simple to manufacture, but the connection becomes loose after long-term use
Solution Approach 1:
The fixing portion is divided into a T-shaped fixing portion on the housing and a corresponding engaging block on the base. This segmentation creates a more stable connection structure where the T-shaped portion interlocks with the engaging block, preventing lateral displacement and rotation while maintaining ease of assembly.
Solution Approach 2:
The T-shaped fixing portion introduces a geometric feature that resists lateral forces and rotational movement, transforming the connection from a simple linear engagement to a multi-directional interlock that enhances stability without complicating manufacturing.
2Device complexity
If the movable seat contacts the housing and base via flat surfaces, then the structure is simple, but friction builds up over time causing displacement
Solution Approach 1:
The contact surfaces of the movable seat are segmented into multiple small contact points formed by protrusions and corresponding recesses on the housing and base. This segmentation reduces the total contact area, minimizing friction buildup while maintaining structural simplicity and stability during motion.
3Ease of manufacture
If conventional fixing portions are used, then manufacturing is easier, but the housing gets loose or falls apart after long-term use
Solution Approach 1:
The fixing structure is segmented into T-shaped fixing portions and corresponding engaging blocks, creating a more durable connection that prevents the housing from loosening or separating during extended use while remaining straightforward to manufacture.
Solution Approach 2:
The T-shaped geometry provides enhanced mechanical interlocking that resists lateral and rotational forces over time, extending the service life of the housing-base connection without significantly increasing manufacturing complexity.
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
Enhances stability and smoothness of motion while ensuring secure connection and maintaining electrical reliability even with damaged resilient members.
Implementation Method 1
a conductive element is provided on one side of the movable seat and includes a plurality of resilient members that function as a plurality of contacts
Data Source
AI summary
A press switch is composed of a base, a light-emitting device, a housing, a movable seat, and a pressing element. Due to the flat surfaces of the base and the ribs of the movable seat, the area of contact between the base and the movable seat is reduced. In addition, due to the ribs of the movable seat and the flat surfaces of the housing, the area of contact between the movable seat and the housing is also reduced. These reduced areas of contact allow the pressing element to be pressed stably and smoothly.