Shield Connector Vibration Suppression via Elastic Clamping
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Solution Overview
Problem
Existing shield connectors for in-vehicle devices fail to effectively suppress vibrations, leading to contact failures between terminal fittings, and require additional steps for fixation.
Innovation Solution
A shield connector design featuring an inner housing with a protrusion that compresses against the casing when a fastening member is inserted, securely sandwiching the inner housing between the casing and a clamping part, thereby reducing vibration and maintaining contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shield connector uses a simple fitting structure without additional fixing members, then the ease of operation is improved, but the reliability deteriorates due to vibration-induced contact failures
Solution Approach 1:
The connector housing includes an elastic clamping part that automatically clamps the inner housing when the fastening member is inserted, without requiring separate fixing operations. The elastic deformation of the clamping part provides self-adjusting clamping force to secure the inner housing against vibration
Solution Approach 2:
The clamping force is dynamically adjusted through the elastic deformation of the clamping part. When the fastening member is inserted, the clamping part deforms elastically to increase clamping force on the inner housing, providing vibration resistance without adding operational steps
2Reliability
If additional fixing members are added to firmly secure the terminal fittings, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The fixing function is merged into the existing connector housing structure by incorporating the elastic clamping part as an integrated component. The clamping part is formed as part of the housing, eliminating the need for separate fixing members while providing reliable vibration resistance
Solution Approach 2:
The connector housing serves multiple functions: it provides structural support, electromagnetic shielding, and vibration resistance through the integrated elastic clamping part. The single housing structure performs both connection and fixation functions
3Stability of the object's composition
If the shield connector uses a rigid fixed structure, then the stability is improved, but the ease of manufacture deteriorates due to additional fastening steps
Solution Approach 1:
The housing is segmented into components including the elastic clamping part that can be independently formed and then assembled. This allows the clamping part to be manufactured separately with optimized elastic properties and then integrated into the housing, simplifying the overall manufacturing process while maintaining structural stability
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 effectively suppresses vibration-induced contact failures between terminal fittings without adding new steps, ensuring reliable electrical connections in vibrating environments.
Implementation Method 1
fastening the fastening member allows the protrusion to be compressively deformed. As a result, the deformed protrusion presses the outer surface or the clamping part, the inner housing hardly vibrates within the shield case
Data Source
AI summary
A shield connector can easily suppress contact failure between terminal metal fittings due to vibration, and a connector connection structure can include the shield connector. In a large-diameter part in the natural state, a direction dimension passing through a tip of a protrusion is larger than a fastening direction dimension from an abutting part to a first clamping part in the shield case, a fastening member inserted into a fixed part is fastened, and the inner housing is thus hard to vibrate in the shield case. Therefore it is possible to suppress poor contact between a terminal fitting held by the inner housing and a mating terminal fitting. At this time, it is unnecessary to add a new process in order to suppress vibration of the inner housing, easily suppressing a contact failure between the terminal fittings.