Pre-Assembled Fastening Module for Secure Reusable Plate Joining

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Solution Overview

Problem

Existing connecting means require manual screwing of a screw into a nut, which can lead to nut displacement or damage, and lack a secure and reliable connection for plate-shaped components.

Innovation Solution

A pre-assembled fastening module with a housing device, nut device, and screw device, where the screw is pre-connected to the housing, allowing for secure and reliable connection of plate-shaped components without manual axial force application, featuring a sliding bearing and differing thread slopes for controlled movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual screwing of a screw into a nut is performed, then connection of two components is achieved, but the nut may be pushed out of the housing or damaged due to excessive pressure

Engineering Contradiction:
Improvemanual assembly operationVSAvoidnut retention in housing
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The screw device is pre-assembled and connected to the housing device in a factory setting before delivery to the customer. This preliminary assembly ensures that the screw is already in place and does not need to be manually screwed into the nut during field installation, thereby preventing excessive pressure from being applied to the nut that could push it out of the housing or cause damage.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent combines the housing device, nut device, and screw device into a single pre-assembled fastening module. By merging these components into one integrated unit, the system eliminates the need for separate manual assembly operations at the installation site, preventing the harmful effect of excessive pressure on the nut while maintaining reliable connection functionality.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If a pre-assembled fastening module is used, then the risk of nut loss or damage is reduced, but the device complexity increases due to pre-assembly requirements

Engineering Contradiction:
Improvefastening module reliabilityVSAvoidpre-assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent integrates the housing device, nut device, and screw device into a single pre-assembled fastening module. This merging of components into one compact unit achieves two goals: it ensures reliable operation by preventing nut loss or damage during installation, and it manages complexity by consolidating multiple parts into a unified module that can be handled and installed as a single unit.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The pre-assembled fastening module serves multiple functions simultaneously: it provides structural support through the housing device, enables fastening through the nut and screw devices, and ensures reliable installation by having all components pre-configured. This multi-functionality justifies the increased complexity by delivering comprehensive performance in a single integrated solution.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Strength

If non-detachable connecting means such as rivets are used, then secure connection of plate-shaped components is achieved, but the connection cannot be disassembled for reuse

Engineering Contradiction:
Improveconnection strengthVSAvoiddisassembly capability
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The patent employs a dynamic fastening system with a screw device that can be rotated and adjusted, allowing the connection to be both strong during operation and easily disassembled when needed. Unlike static rivets, the screw mechanism provides controlled fastening force while maintaining reversibility, enabling the fastening module to transition between locked and unlocked states as required by the application.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The pre-assembled fastening module with screw and nut devices allows for recovery and reuse of components after disassembly. Unlike disposable rivets, the threaded connection enables the nut and screw to be separated, inspected, and reused in subsequent applications, thereby improving ease of repair and reducing material waste while maintaining connection strength during service.

Inventive Principle:
Principle #34Discarding and recovering

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 secure, reliable, and time-efficient connection of components with reduced risk of nut loss or damage, enabling easy disassembly and reuse.

Implementation Method 1

an external thread of the screw device is engaged with an internal thread of the nut device

Methodology Applied
Scientific EffectThread engagement: Screw

Implementation Method 2

applying a torque to the screw device in order to connect the two components to each other

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 3

The connection between the screw device and the housing device can be configured as a sliding bearing, wherein a screw head of the screw device is rotatably mounted

Methodology Applied
Scientific EffectSliding bearing: Lubrication

Data Source

PatentUS12398746B2Fastening module, method for producing a fastening module, and method for connecting two components to a fastening module
Publication Date: 2025.08.26 ILLINOIS TOOL WORKS INC
  • US12398746B2 patent drawing
  • US12398746B2 patent drawing
  • US12398746B2 patent drawing

AI summary

A fastening module, in particular for connecting two components, is provided. The module includes a housing device that defines a receiving space, a nut device that is arranged so as to be displaceable in the receiving space, and a screw device that is connected to the housing device in such a way that the fastening module is a pre-assembled module.