Optical Transceiver Module Internal Latch Design for EMI Reduction
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Solution Overview
Problem
Traditional optical transceiver modules suffer from electromagnetic interference issues due to exposed latches and gaps that allow radiation to spread, leading to loose connections and ineffective grounding when connected to system connectors.
Innovation Solution
The optical transceiver module design extends the engagement portion between the first and second sidewalls to prevent disengagement, reduces gaps through a cover structure, and ensures complete contact with system connector spring plates for grounding, thereby minimizing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If openings or recesses are formed on the housing for latch and handle connections, then the assembly is easier to connect, but the assembly is easier to come off and shake, and electromagnetic interferences spread more easily
Solution Approach 1:
The latch structure is extracted from the traditional exposed configuration and repositioned inside the housing cavity. The engagement component with latch protrusion is located within the housing interior, isolated from external exposure. This extraction eliminates the vulnerability of exposed latches while preserving the connection function through internal engagement mechanisms.
Solution Approach 2:
The housing structure serves as an intermediary barrier between the latch engagement component and the external environment. By positioning the engagement component inside the housing and using the housing walls as mediators, the design protects the latch mechanism from direct exposure while maintaining its functional integrity for secure connection.
2Ease of operation
If openings or recesses are formed on the housing for latch and handle connections, then the assembly is easier to connect, but electromagnetic interferences spread more easily
Solution Approach 1:
The latch structure is extracted from the traditional exposed configuration and repositioned inside the housing cavity. The engagement component with latch protrusion is located within the housing interior, isolated from external exposure. This extraction eliminates the vulnerability of exposed latches while preserving the connection function through internal engagement mechanisms.
Solution Approach 2:
The housing structure serves as an intermediary barrier between the latch engagement component and the external environment. By positioning the engagement component inside the housing and using the housing walls as mediators, the design protects the latch mechanism from direct exposure while maintaining its functional integrity for secure connection.
3Ease of operation
If a larger space is necessary for latch and handle connections, then the connections can be made, but the radiation of electromagnetic interferences is easier to spread
Solution Approach 1:
The engagement component with latch protrusion is nested within the housing cavity, creating a nested structure where the latch mechanism is contained inside the housing. This nesting arrangement allows the connection functionality to be preserved while the housing walls contain and restrict the propagation of electromagnetic radiation from the engagement component.
4Ease of operation
If the optical transceiver module is connected to a system connector, then the module can be installed, but the module cannot be effectively and tightly contacted with the system connector due to the thickness and structure of the latch itself
Solution Approach 1:
The latch structure is extracted from the traditional exposed configuration and repositioned inside the housing cavity. The engagement component with latch protrusion is located within the housing interior, isolated from external exposure. This extraction eliminates the vulnerability of exposed latches while preserving the connection function through internal engagement mechanisms.
Solution Approach 2:
Instead of having the latch protrude outward from the housing to engage with the connector, the design inverts the arrangement by having the engagement component positioned inside the housing with the latch protrusion engaging from the internal side. This inversion allows the housing walls to provide the primary external contact surface for precise connector engagement.
Data Source
AI summary
An optical transceiver module includes a first housing, a second housing, an engagement component, a conductive body, and a circuit board. The first housing has a first sidewall and a first groove. The first groove is closer to a central line of a major axis of the first housing than the first sidewall. The second housing is assembled with the first housing. The second housing has a second sidewall. The second sidewall is extended into the first groove. The engagement component has a first engagement portion. The first engagement portion is extended between the first sidewall and the second sidewall. The conductive body is disposed between the first groove and the second sidewall. The circuit board is disposed between the first housing and the second housing to perform photoelectric conversion. Therefore, the stroke of the engagement component can be fixed, and the electromagnetic interference can be reduced.