Door Handle Connector Displacement Mechanism

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Solution Overview

Problem

Existing door handle systems with integrated electric components face stress issues due to the frame-side connector's inability to smoothly displace with the handle-side connector when the door handle is turned, leading to potential interference with the door glass and spatial accommodation problems with the wire group.

Innovation Solution

A connector system where the frame-side connector is designed to be displaceable with the handle-side connector, featuring a clamp with a wire retaining portion and a handle attaching portion to maintain the wire's relative position to the door handle, and an inclined wire portion to avoid interference with the door glass, along with a bundling mechanism to manage wire configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the frame-side connector is fixed to the handle frame, then the connector structure is simple and easy to manufacture, but the connector cannot smoothly displace when the door handle is turned, causing stress on the connecting surfaces

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The frame-side connector is designed to be displaceable relative to the handle frame through a guide groove and guide projection mechanism. This allows the connector to move dynamically when the door handle is turned, preventing stress concentration and ensuring smooth operation while maintaining structural simplicity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The connector system is divided into separate components: the handle-side connector, the frame-side connector, and the clamp assembly. This segmentation allows each component to perform its specific function independently, with the frame-side connector able to displace smoothly while the clamp retains wire position relative to the door handle

Inventive Principle:

Principle #1Segmentation

2Device complexity

If the wire group is drawn out through the end surface of the frame-side connector, then the wire routing is simple, but the wire group interferes with the door glass during door operation

Engineering Contradiction:

Improvedevice complexityVSAvoidinterference with door glass

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The wire group is routed through the end surface of the frame-side connector rather than along the side, utilizing a different spatial dimension. This three-dimensional routing approach allows the wire to clear the door glass path during operation while maintaining simple connection to the connector

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The clamp assembly acts as an intermediary component that secures the wire group at a specific position. By attaching the clamp to the door handle, the wire position is controlled relative to the door glass, preventing interference during door operation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If the wire retaining portion is attached directly to the frame-side connector, then the wire position is stable, but the wire retaining portion cannot maintain fixed position relative to the door handle during displacement

Engineering Contradiction:

Improvewire position stabilityVSAvoidadaptability to door handle displacement

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The clamp serves as an intermediary component with two attachment functions: it secures the wire group to maintain stable positioning, and simultaneously attaches to the door handle to follow the handle's displacement. This dual-attachment mechanism resolves the contradiction between wire stability and adaptability to motion

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces a direct rigid mechanical connection between the wire retaining portion and the door handle with a more flexible arrangement using the clamp as a movable anchor point. This allows the wire to remain stable while the clamp moves with the door handle during operation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS7575269B2Connector connecting construction, a clamping member and a method of mounting a connector connecting construction

Publication Date: 2009.08.18 SUMITOMO WIRING SYSTEMS LTD

AI summary

A door handle device (S) has a handle-side connector (30) fixed to a door handle (10) that is hinged to a handle frame (20). Thus, the door handle device (S) is displaceable as the door handle (10) is turned. A frame-side connector (40) is located in the handle frame (20) and is connectable with the handle-side connector (30) for displacement with the handle-side connector (30) as the door handle (10) is turned. A clamp (60) has a wire retaining portion (61) for retaining a wire group (80) drawn out through an end surface of the frame-side connector (40) and a handle attaching portion (62) continuous with the wire retaining portion (61) for attachment to the door handle (10). Thus, a relative position of the wire retaining portion (61) to the door handle (10) is invariable.