Optical Module Groove Concave Part Friction Reduction
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Solution Overview
Problem
The existing pluggable optical modules face difficulties in removal due to electromagnetic wave shielding terminals hindering the sliding of arm parts, which prevents the release of engagement between grooves and latch parts, leading to locked modules and hindered removal operations.
Innovation Solution
The optical module incorporates a module body with a concave part on the groove surface in contact with the arm part, reducing frictional forces by altering the contact surface area and shape, allowing smooth sliding and engagement release, while maintaining electromagnetic wave shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electromagnetic wave shielding terminals are provided at the cage entrance to prevent electromagnetic wave leakage, then electromagnetic wave shielding is improved, but the sliding of arm parts is hindered by frictional forces, making engagement release difficult
Solution Approach 1:
A lubricant layer is introduced as an intermediary substance between the electromagnetic wave shielding terminal and the arm part. This lubricant layer reduces the frictional force at the contact surface, allowing the arm part to slide smoothly even when pressed against the shielding terminal, thereby enabling successful engagement release while maintaining electromagnetic wave shielding functionality
Solution Approach 2:
The frictional force parameter at the contact surface between the electromagnetic wave shielding terminal and the arm part is changed by applying a lubricant. This parameter change reduces the resistance to sliding, allowing the arm part to move freely during the removal operation without compromising the electromagnetic wave shielding effect
2Object-affected harmful factors
If electromagnetic wave shielding terminals are pressed against arm parts to close gaps, then electromagnetic wave shielding is improved, but the locking release is prevented, hindering module removal
Solution Approach 1:
A lubricant layer is applied as an intermediary between the electromagnetic wave shielding terminal and the arm part. This lubricant reduces the frictional force generated when the shielding terminal presses against the arm part, enabling the arm part to slide and release the engagement between the groove and latch part, thus ensuring reliable engagement release while maintaining electromagnetic wave shielding
Solution Approach 2:
The frictional force that initially hinders arm part sliding is converted into a beneficial low-friction interface through lubricant application. The pressure that was causing harmful friction is transformed into effective contact that maintains shielding while allowing necessary movement for engagement release
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 the removal operation of the optical module by reducing frictional forces at the contact surfaces, ensuring stable engagement release and effective electromagnetic wave shielding.
Implementation Method 1
reducing frictional forces by altering the contact surface area and shape
Implementation Method 2
electromagnetic wave shielding terminals are generally provided at the entrance of the cage... to shield the electromagnetic waves passing through the gap between the cage and the module body
Data Source
AI summary
An optical module includes: a module body that is configured to be inserted into a cage, at an entrance of the cage an electromagnetic wave shielding terminal being provided, and has a groove formed on one surface thereof and configured to engage with a latch part formed on the cage; and an engagement release member including a body that is provided with a pull tab, the body being slidably attached to the module body and configured to slide in response to an external force, and an arm part that extends from the body along the groove, and slides with respect to the groove in conjunction with the sliding of the body and release the engagement in a state in which the electromagnetic wave shielding terminal is pressed. The module body has a concave part on a surface of the groove, the surface being in contact with the arm part.