LC Type Plug Shutter Spring Enclosure Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing LC type plug with a shutter has exposed spring components that are prone to breakage and corrosion over time, and requires additional components and assembly steps due to the need for a buckling prevention pin.
Innovation Solution
The LC type plug design incorporates storage spaces within the front and locking housings to house the entire spring, preventing exposure and eliminating the need for a buckling prevention pin, thereby reducing component count and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the spring is exposed to the outside for biasing the front housing forward, then the front housing can be easily biased, but the spring is prone to breakage and corrosion
Solution Approach 1:
The spring is nested within the front housing and locking housing structure. The front portion storage space in the front housing and rear portion storage space in the locking housing create a nested configuration that completely encloses the spring, protecting it from external damage while maintaining its biasing function.
2Reliability
If a buckling preventing pin is added to protect the spring, then the spring reliability improves, but the number of components and assembly steps increases
Solution Approach 1:
The buckling prevention function is merged into the housing structure itself. The storage spaces in the front housing and locking housing are designed to contain and guide the spring, eliminating the need for a separate buckling preventing pin while maintaining spring stability.
Solution Approach 2:
The buckling prevention function is extracted from a separate component (pin) and integrated into the housing structure through the storage space design, reducing component count while maintaining the protective function.
3Reliability
If the spring is completely enclosed in storage spaces, then protection from breakage and corrosion is achieved, but the housing structure becomes more complex
Solution Approach 1:
The housing structure is segmented into front housing and locking housing with distinct storage spaces. The front portion storage space and rear portion storage space are separately formed in each housing component, allowing the spring to be enclosed without requiring a completely redesigned monolithic structure.
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 ensures the spring is protected from breakage and corrosion, reduces the number of components and assembly steps, and lowers manufacturing and assembly costs by keeping the spring entirely within the housing.
Implementation Method 1
a spring provided between an upper part of the front housing and the locking housing configured to bias the front housing forward
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3E
AI summary
An LC type plug with a shutter includes: a plug frame (4); a square cylindrical front housing (2) arranged slidably on the plug frame and including a shutter (22); a locking housing (3) connected to the plug frame; and a spring (21) provided between an upper part of the front housing and the locking housing. The front housing (2) includes a front portion storage space (2c) for storing a front portion of the spring, the locking housing (3) is provided with a rear portion storage space (3a) for storing a rear portion of the spring (21), a rear end side of the front portion storage space (2c) and a front end side of the rear portion storage space (3a) are formed so as to overlap with each other, and the spring (21) is not exposed to an outside even in a non-connected state of the plug (1), and the entire part is stored in the both storage spaces (2c, 3a).