Perpendicular Axis Blocking Mechanism for Handle Security

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Solution Overview

Problem

Conventional handle locking mechanisms, such as cylinder locks, are not sufficiently resilient to withstand prolonged pressure and are vulnerable to picking, often requiring fragile components that can break over time, while also increasing the size and cost of the handle arrangement due to complex mechanical movements.

Innovation Solution

A compact blocking mechanism featuring a catch member and a blocking member on perpendicular axes, allowing for rotational movement between blocking and unblocked positions, which reduces the required space and component count, and distributes force effectively to withstand greater torques and forces without the need for delicate components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional cylinder locks are used to provide blocking function, then the blocking mechanism can prevent unauthorized opening, but the mechanism becomes vulnerable to picking and breaking under prolonged pressure due to fragile components

Engineering Contradiction:

Improveresistance to picking and breakingVSAvoidresistance to prolonged pressure

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The blocking mechanism is divided into two independent blocking members (first and second blocking members) that can operate separately. Each blocking member engages with its own catch member, distributing the blocking function across multiple independent elements rather than relying on a single vulnerable mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces perpendicular axes of rotation for the two blocking members, creating a three-dimensional blocking configuration. The first blocking member rotates around a first axis while the second blocking member rotates around a second axis perpendicular to the first, adding spatial dimensionality to the blocking mechanism and making it more resistant to picking and breaking attempts.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Strength

If more components are added to increase toughness and durability of the blocking mechanism, then the mechanism can withstand greater forces and bending moments, but the required size of the handle housing increases due to additional cavities for mechanical movements

Engineering Contradiction:

Improvewithstand forces and bending momentsVSAvoidhandle housing size

Core Design Contradiction:

StrengthVSVolume of stationary object

Solution Approach 1:

The patent combines multiple blocking functions into a compact integrated mechanism. The two blocking members share a common drive arrangement and are housed within the same handle housing, merging what could have been separate mechanisms into a unified compact system that provides enhanced strength without proportionally increasing size.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The blocking members are designed to rotate around perpendicular axes, creating dynamic movement patterns that allow the mechanism to withstand forces from multiple directions. This dynamic configuration enables the mechanism to adapt to various attack vectors without requiring excessive structural reinforcement.

Inventive Principle:

Principle #15Dynamics

3Reliability

If complex mechanical movements with multiple components are used to achieve toughness and durability, then the blocking mechanism can meet security requirements, but the manufacturing cost and consumer price increase

Engineering Contradiction:

Improvesecurity requirement complianceVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The drive arrangement is designed to control both blocking members through a single operational interface, making the system multi-functional. One drive mechanism accomplishes the control of two independent blocking members, reducing the need for separate actuators and control systems, thereby lowering manufacturing complexity and cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If the handle arrangement dimensions are increased to accommodate a more secure blocking mechanism, then security is improved, but the handle arrangement may abut the door or window frame during opening attempt, preventing full opening

Engineering Contradiction:

Improvesecurity levelVSAvoidhandle arrangement dimensions

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

By arranging the blocking members on perpendicular axes, the patent creates a compact three-dimensional configuration that maximizes security within a minimal footprint. This spatial arrangement allows the mechanism to provide enhanced security without extending the handle arrangement's external dimensions, preventing interference with door or window frame clearance.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12012780B2Blocking mechanism for a handle arrangement

Publication Date: 2024.06.18 INDUSTRILAS AB

AI summary

A blocking mechanism for a handle arrangement comprising, at least one catch member arranged on a first shaft extending along a first axis, a blocking member arranged on a second shaft extending along a second axis, wherein the first axis and the second axis are substantially perpendicular to each other, wherein the blocking member is rotatable around the second axis between a blocking position, in which it is engageable with the catch member to prevent the catch member from rotation around the first axis, and an unblocked position in which rotation of the catch member is enabled.