Backlash-Compensating Connector with Movable Plate

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Solution Overview

Problem

Existing connectors for electronic equipment face challenges in connecting devices when one or both connectors are offset from their nominal positions, leading to difficulties in assembly and mechanical stress due to the inability to compensate for position deviations in both translation and rotation planes.

Innovation Solution

A backlash connector with a mobile connection plate and return mechanism that allows movement perpendicular to the connector plane, using guide rods and springs to align and secure the plate in the initial position, facilitating connection despite position deviations and ensuring reliable contact between connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional connectors are used without play compensation, then the connector structure remains simple, but connection becomes impossible or causes mechanical stress when connectors are offset from nominal position

Engineering Contradiction:
Improveconnection reliabilityVSAvoidconnector structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connection plate is made movable relative to the first wall through a guide rod mechanism, allowing dynamic adjustment to compensate for positional deviations. The plate can slide along the connection direction and return to its initial position under spring action, transforming a static rigid connector into a dynamic adaptable one that maintains reliable connection despite misalignment.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The connector introduces variable parameters through the movable plate's position, sliding distance, and return force. By changing the plate's position along the connection direction and allowing it to move within a range determined by the guide rod and spring, the connector adapts to different alignment conditions, resolving the contradiction between connection reliability and structural simplicity.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If connectors are designed to compensate for positional deviations, then connection ease improves, but the connector structure becomes more complex

Engineering Contradiction:
Improveassembly easeVSAvoidconnector structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connector is segmented into distinct functional components: a fixed first wall, a movable connection plate, a guide rod for constrained movement, and a return mechanism with spring. This segmentation allows each component to perform its specific function independently, simplifying the overall design while achieving positional compensation and easy assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide rod acts as an intermediary element that mediates between the fixed wall and the movable plate, constraining the plate's movement to the desired connection direction while allowing necessary sliding. This intermediary component enables easy assembly by guiding the connection process without requiring complex adjustment mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the connector allows movement compensation, then connection reliability improves, but the connector's structural stability may be compromised

Engineering Contradiction:
Improveconnection reliabilityVSAvoidconnector structural stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The connector achieves both reliability and stability through controlled dynamics. The plate is movable during the connection process to compensate for positional deviations, ensuring reliable connection. Once connected, the return spring maintains the plate in a stable position against the first wall, providing structural stability. The guide rod constrains movement to prevent instability while allowing necessary adjustment.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The return spring provides beforehand cushioning by pre-loading the movable plate against the first wall. This spring force compensates for potential gaps or misalignments before connection, ensuring reliable contact. The spring also cushions against sudden impacts or excessive forces during connection, maintaining structural stability while enabling movement compensation.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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

Enables secure and stress-free connection of electronic equipment by compensating for position deviations in both translation and rotation, ensuring reliable contact and easy assembly by allowing the plate to return to its initial position, thus addressing the limitations of existing connectors.

Implementation Method 1

a return mechanism capable of maintaining the plate in an initial position relative to the first wall, when no force is applied to the plate

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The rod(s) and corresponding passage(s) are arranged to guide the plate during said movement

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3796481B1Connector with play compensation, connection device, and assembly comprising such a device
Publication Date: 2023.05.03 AXON CABLE SA
  • EP3796481B1 patent drawingFigure 1
  • EP3796481B1 patent drawingFigure 2
  • EP3796481B1 patent drawingFigure 3

AI summary

A backlash-compensating connector (100) comprising a wall (1001) and a movable connection plate (110) having a connection terminal (120). The first wall and the plate are configured to allow the plate to move from its initial position to a final position by sliding along a connection direction (X) perpendicular to the plane of the wall. The backlash-compensating connector includes return means (164) that allow the plate to slide under the effect of a force applied to the plate along the connection direction, but tend to return the plate to its initial position against the wall in a direction opposite to the connection direction if the plate (110) is displaced from its initial position. A connection device comprising this connector and the other connector, and an assembly comprising such a device.