Lock Core Structure with Brake Bolt Plate for Anti-Theft

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Solution Overview

Problem

Conventional disk tumbler locks allow incorrect key insertion or forceful manipulation, leading to potential key deformation or breakage and compromised anti-theft efficacy due to unsmooth rotation mechanisms.

Innovation Solution

A lock core structure featuring a push plate and brake bolt plate mechanism that prevents rotation unless the key is fully inserted, utilizing a compression spring to ensure proper alignment and prevent arbitrary rotation of lock plates and washers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the lock core structure allows free rotation of lock plates when key is not fully inserted, then the operation is easier and faster, but the key can be deformed or broken and anti-theft effect is compromised

Engineering Contradiction:

Improveease of operationVSAvoidanti-theft effect

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The brake bolt plate is preliminarily positioned to block the lock plates from rotating, preventing incorrect key manipulation before it can cause damage. The compression spring maintains constant pressure to ensure the brake bolt plate remains in the blocking position, ready to prevent any attempted rotation of lock plates when the key is not fully inserted.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The brake bolt plate is preliminarily positioned in the blocking position before key insertion, ready to prevent rotation. When the key is fully inserted, the push plate moves the brake bolt plate to the non-blocking position, allowing rotation. This preliminary positioning ensures that only fully inserted keys can rotate the lock plates.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the brake bolt plate blocks the lock plates from rotating, then the anti-theft efficacy is improved, but the device complexity increases due to additional components

Engineering Contradiction:

Improveanti-theft efficacyVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The brake bolt plate serves multiple functions: it blocks incorrect key rotation, guides the push plate during operation, and works with the compression spring to maintain proper force. The push plate also serves dual purposes by both unlocking the brake bolt plate and ensuring complete key insertion. This multi-functionality reduces the need for separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The brake bolt plate and push plate are nested within the lock core structure, with the push plate interacting with the brake bolt plate in a compact arrangement. The compression spring is nested within the same space, creating a compact multi-component assembly that minimizes overall structural complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If the key must be fully inserted to prevent rotation, then the manufacturing precision requirement increases to ensure proper alignment, but the anti-theft effect is enhanced

Engineering Contradiction:

Improveanti-theft effectVSAvoidmanufacturing precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The guide groove on the key and the corresponding groove on the push plate are designed with asymmetric shapes that only match when the key is fully inserted. This asymmetric design ensures proper alignment and prevents rotation unless the key is completely inserted, enhancing security while maintaining reasonable manufacturing tolerances.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The guide groove and corresponding groove features are localized at specific positions on the key and push plate, concentrating the precision requirements to critical areas rather than requiring high precision throughout the entire component. This allows manufacturing precision to be focused where it is most needed for security functionality.

Inventive Principle:

Principle #3Local quality

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

Ensures the key must be fully inserted to rotate the lock core, enhancing the lock's service life and anti-theft efficacy by preventing deformation and ensuring smooth operation.

Implementation Method 1

an elastic element, that is, a compression spring 271 is provided in the groove 204

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12037812B2Lock core structure

Publication Date: 2024.07.16 LIN YU PIN

AI summary

A lock core structure composed of a lock core seat, a lock core shell, a push plate, lock plates, washers, a positioning plate, a latch lever, a brake bolt plate pushed by a compression spring, a positioning baffle, and a retaining ring. An accommodating chamber of the seat is provided with an accommodating groove, a ring groove, a shaft hole and a groove, an inner bottom surface of the shell is provided with a slide groove for disposing the push plate, the brake bolt plate is provided in the accommodating groove, and provided with a pivot shaft disposed in the shaft hole, the positioning baffle is provided in the chamber and provided with a first baffle corresponding to an embedding groove of the seat, and a second baffle corresponding to the accommodating groove and the groove, and the retaining ring is embedded in the ring groove.