Surface-Mount Clip Resilient Contact Inversion

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Solution Overview

Problem

Conventional surface mount clips face issues with permanent deformation of resilient contact parts when securing conductive members like shielding cases, and existing solutions increase manufacturing costs and complexity, especially when applied to conductive members like electric wires.

Innovation Solution

A surface mount clip formed by bending a metallic thin plate, where the resilient contact parts are inclined towards the solder joint, allowing easy insertion of conductive members between support parts, inhibiting permanent deformation and eliminating the need for tongue pieces or projections on the conductive members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the resilient contact parts are extended from opposed sides of the solder joint part and bent toward the upper surface to clip the end edge of the shielding case, then the surface mount clip can secure the conductive member, but the resilient contact parts are permanently deformed due to lateral hitting by the end edge

Engineering Contradiction:
Improvesecuring capabilityVSAvoidpermanent deformation
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The resilient contact parts are configured to press the conductive member from a direction substantially perpendicular to the longitudinal direction of the support parts, rather than clipping from the sides. This dimensional change in the pressing direction prevents lateral hitting and permanent deformation while maintaining securing capability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Instead of having the resilient contact parts clip the end edge laterally (conventional approach), the invention inverts the approach by having the resilient contact parts press the conductive member from above in a perpendicular direction, thereby avoiding the lateral hitting problem.

Inventive Principle:
Principle #13The other way round (Inversion)

2Stability of the object's composition

If most part of the surface mount clip is buried into the printed circuit board with tongue pieces inserted between buried resilient contact parts, then permanent deformation is avoided, but tongue pieces need to be provided to the shielding case and manufacturing cost increases

Engineering Contradiction:
Improvepermanent deformation preventionVSAvoidtongue pieces requirement
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The surface mount clip is designed to work with various conductive members (shielding cases, electric wires, etc.) without requiring them to have specific features like tongue pieces or projections. The resilient contact parts press from above, making the clip universally applicable to different conductive member types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention extracts the requirement for tongue pieces or projections from the conductive member by changing the clipping mechanism. Instead of requiring the conductive member to have insertion features, the resilient contact parts directly press the conductive member from above, eliminating the need for additional features on the conductive member.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If the resilient contact parts are configured to clip the end edge of the shielding case, then the shielding case can be secured, but the work of inserting tongue pieces between buried resilient contact parts is difficult and work cost increases

Engineering Contradiction:
Improvesecuring capabilityVSAvoidinsertion work difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The resilient contact parts are pre-configured to press from above in a perpendicular direction, eliminating the need for subsequent insertion operations. The conductive member can be directly placed without requiring insertion of tongue pieces, making the operation simpler and reducing work cost.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The surface mount clip automatically secures the conductive member through the pressing action of the resilient contact parts from above, without requiring manual insertion operations or complex assembly steps. The design enables self-securing functionality that reduces operational complexity.

Inventive Principle:
Principle #25Self-service

4Reliability

If projections are provided to the end edge of the shielding case and inserted into openings of connectors, then the shielding case can be secured, but the manufacturing cost and complexity increase

Engineering Contradiction:
Improvesecuring capabilityVSAvoidprojections and openings requirement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The surface mount clip with resilient contact parts pressing from above can secure various types of conductive members without requiring them to have projections or the clip to have openings. This universal design eliminates the need for matching projection-opening features, reducing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention removes the requirement for projections on the conductive member and corresponding openings in the connector by using a pressing mechanism from above. This extraction of the projection-opening requirement simplifies the overall system design and reduces manufacturing complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

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 enables easy and secure attachment of conductive members to printed circuit boards without permanent deformation, reducing manufacturing costs and complexity, while ensuring reliable electrical conduction and preventing high-frequency wave leakage.

Implementation Method 1

The resilient contact part is resiliently deformed and pressed by the conductive member, when the conductive member is inserted between the pair of support parts, and secures the conductive member between the pair of support parts.

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

When the lower surface of the solder joint part is soldered and connected to the conductor pattern of the printed circuit board

Methodology Applied
Scientific EffectSoldering: Soldering

Data Source

PatentEP2590494B1Surface-mounting clip
Publication Date: 2019.08.07 KITAGAWA INDS
  • EP2590494B1 patent drawingFigure 1A~1J
  • EP2590494B1 patent drawingFigure 2A~2E
  • EP2590494B1 patent drawingFigure 3A~3J

AI summary

A surface mount clip including: a solder joint part in which a lower surface thereof is to be a solder joint surface to be soldered and connected to a conductor pattern on a printed circuit board; a pair of support parts connected to the solder joint part, and, when the solder joint part is soldered and connected to the printed circuit board, supported in a position above the printed circuit board at an interval between the pair of support parts, the interval allowing a conductive member other than the printed circuit board to be inserted therein; and a resilient contact part that is connected at least to one of the pair of support parts, is resiliently deformed and pressed by the conductive member, when the conductive member is inserted between the pair of support parts, and electrically connects the conductor pattern and the conductive member.