Folding Lock Bracket Snap-Fit Assembly

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Solution Overview

Problem

Existing joint locks face challenges in cost-effective production and simple assembly, particularly in ensuring precise and secure positioning of the locking mechanism within the lock body, due to the need for large openings for manual adjustment of combination locking mechanisms, which complicates assembly and increases the risk of improper alignment.

Innovation Solution

A holder for the locking mechanism is introduced, which is fixed within the lock body using a latching connection, allowing the locking mechanism to be inserted and positioned externally before being secured within the housing, providing tolerance compensation and facilitating assembly through elastic materials and a cage-like design that accommodates manufacturing deviations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the lock body has large openings to allow manual adjustment of code rings, then the combination locking mechanism can be adjusted, but the manufacturing cost increases and assembly becomes more complex

Engineering Contradiction:
Improvemanual adjustment of code ringsVSAvoidassembly complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The lock body is divided into a housing and a separate bracket component. The bracket is inserted into the housing through a snap-fit connection, allowing the locking mechanism to be assembled separately and then integrated into the final product. This segmentation simplifies manufacturing and assembly while maintaining the functionality of code ring adjustment through access openings.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bracket is extracted as a separate component from the housing, allowing it to be manufactured independently and then assembled into the lock body. This extraction enables simpler manufacturing processes for each component and facilitates easier assembly and disassembly of the locking mechanism.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of manufacture

If the locking mechanism is inserted into the housing, then the lock body can be assembled, but precise positioning is difficult to ensure

Engineering Contradiction:
Improveassembly of lock bodyVSAvoidpositioning of locking mechanism
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The bracket serves as an intermediary component between the locking mechanism and the housing. It provides a standardized interface with positioning elements that ensure accurate placement of the locking mechanism within the housing. The snap-fit connection between the bracket and housing maintains this precise positioning while allowing for easy assembly.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Volume of moving object

If the lock body is made compact, then the overall size is reduced, but the installation of the locking mechanism becomes more difficult

Engineering Contradiction:
Improvesize of lock bodyVSAvoidinstallation of locking mechanism
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The bracket is nested within the housing, with the locking mechanism integrated into the bracket structure. This nested arrangement allows the components to be space-efficiently organized, maintaining a compact overall size while providing adequate space within the bracket for the locking mechanism components and their assembly.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

This solution enables cost-effective production and simplified assembly by allowing the locking mechanism to be precisely positioned without manual handling, ensuring secure operation and enhanced durability against mechanical stress, while maintaining the compactness and robustness required for securing two-wheelers.

Implementation Method 1

A bracket for the locking mechanism is located inside the housing, secured within the housing by a snap-fit connection

Methodology Applied
Scientific EffectSnap-fit connection: Mechanical Fastener

Implementation Method 2

the bracket can simply consist of a frame structure and/or be made of an elastic material

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3741937B1Folding lock
Publication Date: 2024.04.24 ABUS AUGUST BREMICKER SOEHNE KG
  • EP3741937B1 patent drawingFigure 1
  • EP3741937B1 patent drawingFigure 2
  • EP3741937B1 patent drawingFigure 3

AI summary

A hinged lock comprises a lock body, which has a housing containing a locking mechanism, and a hinged bar with several pivotally connected hinged bars and a locking bar, wherein the locking bar can be selectively locked to the lock body by means of the locking mechanism. The locking mechanism is at least partially held in a bracket, which is fixed in the housing by means of a snap-fit ​​connection.