Clutch Driving Module for Independent Lock Operation

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Solution Overview

Problem

Existing lock systems require the interior handle assembly's control button to be pressed or turned before the exterior handle assembly can lock or unlock the door, causing inconvenience as the exterior handle assembly cannot independently lock the door when the control button is not engaged.

Innovation Solution

A clutch driving module comprising a first driving tube, a driving member, a second driving tube, a sleeve, a sliding member, and a driving rod, allowing the lock to be selectively locked or unlocked by either the interior or exterior handle assembly, with the driving rod's configuration enabling independent operation of both handle assemblies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the control button of the interior handle assembly is required to be pressed or turned before the exterior handle assembly can lock or unlock the door, then the lock control system maintains security through centralized control, but the exterior handle assembly cannot independently lock the door causing user inconvenience

Engineering Contradiction:

Improveindependent operation of exterior handle assemblyVSAvoidcontrol button engagement requirement

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The driving rod is segmented into multiple sections that can move independently relative to each other. The first section is driven by the interior handle assembly while the second section is driven by the exterior handle assembly. This segmentation allows each handle assembly to independently control the locking mechanism without requiring the other to be engaged, resolving the contradiction between centralized security control and independent operation capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The clutch mechanism acts as an intermediary between the two handle assemblies and the locking mechanism. It selectively engages or disengages the connection between the driving rod sections based on which handle assembly is being operated, enabling independent control while maintaining the overall lock control system's security function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the control button must be engaged for the exterior handle to lock the door, then the lock system maintains a unified control mechanism, but this creates inconvenience when the interior handle is not in use

Engineering Contradiction:

Improveflexibility of handle assembly operationVSAvoiduser convenience in locking door

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The clutch mechanism dynamically adjusts its engagement state based on which handle assembly is being operated. When the interior handle is used, the clutch engages the first section of the driving rod. When the exterior handle is used, the clutch engages the second section. This dynamic adaptability allows the system to flexibly respond to different operational scenarios, providing versatility while maintaining ease of operation for both handle assemblies independently.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9945152B2Clutch driving module of a lock

Publication Date: 2018.04.17 TAIWAN FU HSING INDUSTRIAL CO LTD

AI summary

A clutch driving module is disposed in a lock which is able to drive the clutch driving module selectively to control an exterior handle assembly whether be able to drive a latch assembly in lock or unlock or not. And the clutch driving module is able to respectively make an interior handle assembly and the exterior handle assembly controlling the lock in lock or unlock independently.