Cabinet Hinge Torque Control With Stable Angle Holding

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Solution Overview

Problem

Conventional opening and closing devices for cabinets protrude, hindering stored goods and lack a stable mechanism to maintain the opening and closing member at predetermined angles, with inadequate torque control and buffering.

Innovation Solution

An opening and closing device with a back plate and side plates attached to the cabinet, featuring a rotation torque controlling mechanism, torque peak adjusting mechanism, locking mechanism, and buffering mechanism using a fluid damper to manage rotation torque and maintain stable positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional opening and closing devices use arms or stays that are extended and retracted, then the opening and closing member can be supported, but the device protrudes from both sides of the cabinet and hinders stored goods

Engineering Contradiction:

Improvesupport functionVSAvoidhindrance to stored goods

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The arms are designed to be retractable into the cabinet body when not in use, similar to a nested doll structure. The arms can be extended when needed to support the opening and closing member, then retracted into the cabinet to avoid protruding and hindering stored goods.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The opening and closing device uses dynamically adjustable arms that can extend and retract based on the operational state. The arms are extended when the cabinet door needs support during opening/closing, and retracted when the door is in a stable position, providing dynamic adaptation to different states.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If conventional opening and closing devices are simplified, then the structure becomes less complex, but the device lacks adequate function to stably stop and hold the opening and closing member at a predetermined opening angle

Engineering Contradiction:

ImprovestructureVSAvoidstable stopping function

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The opening and closing device incorporates a self-locking mechanism that automatically engages at predetermined opening angles without requiring additional complex components. The arms are designed with built-in locking features that engage passively when the door reaches specific angles, providing stable stopping function through the device's own structure.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The device includes buffering mechanisms that are pre-positioned to absorb impact and provide stable stopping at predetermined angles. The arms are designed with cushioning elements that engage before the door reaches the fully closed position, preventing sudden impacts and ensuring stable stopping.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If conventional opening and closing devices include redundant components like additional elastic members, then buffering function is provided, but the device complexity increases

Engineering Contradiction:

Improvebuffering functionVSAvoidcomponents

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The buffering function is merged into the arm structure itself rather than being a separate component. The arms incorporate elastic elements or damping mechanisms as integral parts of their design, eliminating the need for additional redundant elastic members while maintaining the buffering function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The arms are designed to perform multiple functions: supporting the opening and closing member, providing buffering during closure, and enabling stable stopping at predetermined angles. This multi-functionality eliminates the need for separate dedicated buffering components, reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 device allows smooth operation without the feel of weight, prevents sudden closure, and adjusts torque peaks for enhanced usability and stability at various angles.

Implementation Method 1

buffering mechanism using a fluid damper

Methodology Applied

Scientific EffectFluid damping: Viscous Damping

Implementation Method 2

urging mechanism provided in the external bracket for pressurizing the cam slider toward the pressure receiving member

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11136806B2Opening and closing device for opening and closing body, and various opened and closed bodies having the same

Publication Date: 2021.10.05 KEM HONGKONG LTD

AI summary

To provide an opening and closing device for opening and closing body having a rotation torque controlling module and a torque peak adjusting module, solution was sought by an opened and closed body and the opening and closing body which comprises an attaching part, an opening and closing part rotatably attached to the attaching part via a hinge shaft, a rotation torque controlling module for controlling a rotation torque of the opening and closing part, a torque peak adjusting module for adjusting a torque peak of the opening and closing part at the time of its opening and closing movement.